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-rw-r--r--libXaw/src/Text.c8316
1 files changed, 4158 insertions, 4158 deletions
diff --git a/libXaw/src/Text.c b/libXaw/src/Text.c
index 060057d1f..b95231c56 100644
--- a/libXaw/src/Text.c
+++ b/libXaw/src/Text.c
@@ -1,4158 +1,4158 @@
-/***********************************************************
-
-Copyright 1987, 1988, 1994, 1998 The Open Group
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
-
-
-Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.
-
- All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and its
-documentation for any purpose and without fee is hereby granted,
-provided that the above copyright notice appear in all copies and that
-both that copyright notice and this permission notice appear in
-supporting documentation, and that the name of Digital not be
-used in advertising or publicity pertaining to distribution of the
-software without specific, written prior permission.
-
-DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
-DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
-ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
-WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
-ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
-SOFTWARE.
-
-******************************************************************/
-
-/*
- * Copyright (c) 1998 by The XFree86 Project, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of the XFree86 Project shall
- * not be used in advertising or otherwise to promote the sale, use or other
- * dealings in this Software without prior written authorization from the
- * XFree86 Project.
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <stdio.h>
-#include <X11/IntrinsicP.h>
-#include <X11/StringDefs.h>
-#include <X11/Shell.h>
-#include <X11/Xatom.h>
-#include <X11/Xfuncs.h>
-#include <X11/Xutil.h>
-#include <X11/Xmu/Misc.h>
-#include <X11/Xmu/SysUtil.h>
-#include <X11/Xmu/Xmu.h>
-#include <X11/Xaw/Cardinals.h>
-#include <X11/Xaw/MultiSinkP.h>
-#include <X11/Xaw/TextP.h>
-#include <X11/Xaw/TextSrcP.h>
-#include <X11/Xaw/TextSinkP.h>
-#include <X11/Xaw/Scrollbar.h>
-#include <X11/Xaw/XawImP.h>
-#include <X11/Xaw/XawInit.h>
-#include "Private.h"
-#include "XawI18n.h"
-
-#ifndef MAX_LEN_CT
-#define MAX_LEN_CT 6 /* for sequence: ESC $ ( A \xx \xx */
-#endif
-
-unsigned long FMT8BIT = 0L;
-unsigned long XawFmt8Bit = 0L;
-unsigned long XawFmtWide = 0L;
-
-#define SinkClearToBG _XawTextSinkClearToBackground
-
-#define SrcScan XawTextSourceScan
-#define SrcRead XawTextSourceRead
-#define SrcReplace XawTextSourceReplace
-#define SrcSearch XawTextSourceSearch
-#define SrcCvtSel XawTextSourceConvertSelection
-#define SrcSetSelection XawTextSourceSetSelection
-
-#define MULTI_CLICK_TIME 500L
-
-#define SRC_CHANGE_NONE 0
-#define SRC_CHANGE_AFTER 1
-#define SRC_CHANGE_BEFORE 2
-#define SRC_CHANGE_OVERLAP 3
-
-#define Superclass (&simpleClassRec)
-
-/*
- * Compute a the maximum length of a cut buffer that we can pass at any
- * time. The 64 allows for the overhead of the Change Property request.
- */
-#define MAX_CUT_LEN(dpy) (XMaxRequestSize(dpy) - 64)
-
-#define ClearWindow(ctx) \
- _XawTextNeedsUpdating((ctx), \
- (ctx)->text.lt.top, \
- (ctx)->text.lt.info[ctx->text.lt.lines].position)
-
-/*
- * Class Methods
- */
-static void XawTextClassInitialize(void);
-static void XawTextInitialize(Widget, Widget, ArgList, Cardinal*);
-static void XawTextRealize(Widget, XtValueMask*, XSetWindowAttributes*);
-static void XawTextDestroy(Widget);
-static void XawTextResize(Widget);
-static void XawTextExpose(Widget, XEvent*, Region);
-static Boolean XawTextSetValues(Widget, Widget, Widget, ArgList, Cardinal*);
-static void XawTextGetValuesHook(Widget, ArgList, Cardinal*);
-static Bool XawTextChangeSensitive(Widget);
-
-/*
- * Prototypes
- */
-static XawTextPosition _BuildLineTable(TextWidget, XawTextPosition, int);
-static void _CreateCutBuffers(Display*);
-static Boolean TextConvertSelection(Widget, Atom*, Atom*, Atom*, XtPointer*,
- unsigned long*, int*);
-static int CountLines(TextWidget, XawTextPosition, XawTextPosition);
-static void CreateHScrollBar(TextWidget);
-static void CreateVScrollBar(TextWidget);
-static void CvtStringToScrollMode(XrmValuePtr, Cardinal*,
- XrmValuePtr, XrmValuePtr);
-static Boolean CvtScrollModeToString(Display*, XrmValue*, Cardinal*,
- XrmValue*, XrmValue*, XtPointer*);
-static void CvtStringToWrapMode(XrmValuePtr, Cardinal*,
- XrmValuePtr, XrmValuePtr);
-static Boolean CvtWrapModeToString(Display*, XrmValue*, Cardinal*,
- XrmValue*, XrmValue*, XtPointer*);
-static Boolean CvtStringToJustifyMode(Display*, XrmValue*, Cardinal*,
- XrmValue*, XrmValue*, XtPointer*);
-static Boolean CvtJustifyModeToString(Display*, XrmValue*, Cardinal*,
- XrmValue*, XrmValue*, XtPointer*);
-static void DestroyHScrollBar(TextWidget);
-static void DestroyVScrollBar(TextWidget);
-#ifndef OLDXAW
-static void DisplayText(Widget, XawTextPosition, XawTextPosition);
-#endif
-static void OldDisplayText(Widget, XawTextPosition, XawTextPosition);
-static void DisplayTextWindow(Widget);
-static void DoCopyArea(TextWidget, int, int, unsigned int, unsigned int,
- int, int);
-static void DoSelection(TextWidget, XawTextPosition, Time, Bool);
-static void ExtendSelection(TextWidget, XawTextPosition, Bool);
-static XawTextPosition FindGoodPosition(TextWidget, XawTextPosition);
-static void FlushUpdate(TextWidget);
-static int GetCutBufferNumber(Atom);
-static int GetMaxTextWidth(TextWidget);
-static unsigned int GetWidestLine(TextWidget);
-static void HScroll(Widget, XtPointer, XtPointer);
-static void HJump(Widget, XtPointer, XtPointer);
-static void InsertCursor(Widget, XawTextInsertState);
-static Bool LineAndXYForPosition(TextWidget, XawTextPosition, int*,
- int*, int*);
-static int LineForPosition(TextWidget, XawTextPosition);
-static void TextLoseSelection(Widget, Atom*);
-static Bool MatchSelection(Atom, XawTextSelection*);
-static void ModifySelection(TextWidget, XawTextPosition, XawTextPosition);
-static XawTextPosition PositionForXY(TextWidget, int, int);
-static void PositionHScrollBar(TextWidget);
-static void PositionVScrollBar(TextWidget);
-#ifndef OLDXAW
-static int ResolveColumnNumber(TextWidget);
-static int ResolveLineNumber(TextWidget);
-#endif
-static void _SetSelection(TextWidget, XawTextPosition, XawTextPosition,
- Atom*, Cardinal);
-static void TextSinkResize(Widget);
-static void UpdateTextInRectangle(TextWidget, XRectangle*);
-static void UpdateTextInLine(TextWidget, int, int, int);
-static void VScroll(Widget, XtPointer, XtPointer);
-static void VJump(Widget, XtPointer, XtPointer);
-
-/*
- * External
- */
-void _XawTextAlterSelection(TextWidget,
- XawTextSelectionMode, XawTextSelectionAction,
- String*, Cardinal*);
-void _XawTextCheckResize(TextWidget);
-void _XawTextClearAndCenterDisplay(TextWidget);
-void _XawTextExecuteUpdate(TextWidget);
-char *_XawTextGetText(TextWidget, XawTextPosition, XawTextPosition);
-void _XawTextPrepareToUpdate(TextWidget);
-int _XawTextReplace(TextWidget, XawTextPosition, XawTextPosition,
- XawTextBlock*);
-Atom *_XawTextSelectionList(TextWidget, String*, Cardinal);
-void _XawTextSetScrollBars(TextWidget);
-void _XawTextSetSelection(TextWidget, XawTextPosition, XawTextPosition,
- String*, Cardinal);
-void _XawTextVScroll(TextWidget, int);
-void XawTextScroll(TextWidget, int, int);
-void _XawTextSetSource(Widget, Widget, XawTextPosition, XawTextPosition);
-#ifndef OLDXAW
-void _XawTextSetLineAndColumnNumber(TextWidget, Bool);
-#endif
-void _XawTextSourceChanged(Widget, XawTextPosition, XawTextPosition,
- XawTextBlock*, int);
-
-/* Not used by other modules, but were extern on previous versions
- * of the library
- */
-void _XawTextShowPosition(TextWidget);
-
-/*
- * From TextAction.c
- */
-extern void _XawTextZapSelection(TextWidget, XEvent*, Bool);
-
-/*
- * From TextSrc.c
- */
-void _XawSourceAddText(Widget, Widget);
-void _XawSourceRemoveText(Widget, Widget, Bool);
-Bool _XawTextSourceNewLineAtEOF(Widget);
-
-/*
- * From TextSink.c
- */
-void _XawTextSinkClearToBackground(Widget, int, int, unsigned, unsigned);
-void _XawTextSinkDisplayText(Widget, int, int, XawTextPosition, XawTextPosition,
- Bool);
-
-/****************************************************************
- *
- * Full class record constant
- *
- ****************************************************************/
-/*
- * From TextTr.c
- */
-static XawTextSelectType defaultSelectTypes[] = {
- XawselectPosition, XawselectAlphaNumeric, XawselectWord, XawselectLine,
- XawselectParagraph, XawselectAll, XawselectNull,
-};
-
-static XPointer defaultSelectTypesPtr = (XPointer)defaultSelectTypes;
-static Dimension defWidth = 100;
-static Dimension defHeight = DEFAULT_TEXT_HEIGHT;
-
-#define offset(field) XtOffsetOf(TextRec, field)
-static XtResource resources[] = {
- {
- XtNwidth,
- XtCWidth,
- XtRDimension,
- sizeof(Dimension),
- offset(core.width),
- XtRDimension,
- (XtPointer)&defWidth
- },
- {
- XtNcursor,
- XtCCursor,
- XtRCursor,
- sizeof(Cursor),
- offset(simple.cursor),
- XtRString,
- "xterm"
- },
- {
- XtNheight,
- XtCHeight,
- XtRDimension,
- sizeof(Dimension),
- offset(core.height),
- XtRDimension,
- (XtPointer)&defHeight
- },
- {
- XtNdisplayPosition,
- XtCTextPosition,
- XtRInt,
- sizeof(XawTextPosition),
- offset(text.lt.top),
- XtRImmediate,
- (XtPointer)0
- },
- {
- XtNinsertPosition,
- XtCTextPosition,
- XtRInt,
- sizeof(XawTextPosition),
- offset(text.insertPos),
- XtRImmediate,
- (XtPointer)0
- },
- {
- XtNleftMargin,
- XtCMargin,
- XtRPosition,
- sizeof(Position),
- offset(text.r_margin.left),
- XtRImmediate,
- (XtPointer)2
- },
- {
- XtNrightMargin,
- XtCMargin,
- XtRPosition,
- sizeof(Position),
- offset(text.r_margin.right),
- XtRImmediate,
- (XtPointer)4
- },
- {
- XtNtopMargin,
- XtCMargin,
- XtRPosition,
- sizeof(Position),
- offset(text.r_margin.top),
- XtRImmediate,
- (XtPointer)2
- },
- {
- XtNbottomMargin,
- XtCMargin,
- XtRPosition,
- sizeof(Position),
- offset(text.r_margin.bottom),
- XtRImmediate,
- (XtPointer)2
- },
- {
- XtNselectTypes,
- XtCSelectTypes,
- XtRPointer,
- sizeof(XawTextSelectType*),
- offset(text.sarray),
- XtRPointer,
- (XtPointer)&defaultSelectTypesPtr
- },
- {
- XtNtextSource,
- XtCTextSource,
- XtRWidget,
- sizeof(Widget),
- offset(text.source),
- XtRImmediate,
- NULL
- },
- {
- XtNtextSink,
- XtCTextSink,
- XtRWidget,
- sizeof(Widget),
- offset(text.sink),
- XtRImmediate,
- NULL
- },
- {
- XtNdisplayCaret,
- XtCOutput,
- XtRBoolean,
- sizeof(Boolean),
- offset(text.display_caret),
- XtRImmediate,
- (XtPointer)True
- },
- {
- XtNscrollVertical,
- XtCScroll,
- XtRScrollMode,
- sizeof(XawTextScrollMode),
- offset(text.scroll_vert),
- XtRImmediate,
- (XtPointer)False
- },
- {
- XtNscrollHorizontal,
- XtCScroll,
- XtRScrollMode,
- sizeof(XawTextScrollMode),
- offset(text.scroll_horiz),
- XtRImmediate,
- (XtPointer)False
- },
- {
- XtNwrap,
- XtCWrap,
- XtRWrapMode,
- sizeof(XawTextWrapMode),
- offset(text.wrap),
- XtRImmediate,
- (XtPointer)XawtextWrapNever
- },
- {
- XtNautoFill,
- XtCAutoFill,
- XtRBoolean,
- sizeof(Boolean),
- offset(text.auto_fill),
- XtRImmediate,
- (XtPointer)False
- },
-#ifndef OLDXAW
- {
- XtNpositionCallback,
- XtCCallback,
- XtRCallback,
- sizeof(XtPointer),
- offset(text.position_callbacks),
- XtRCallback,
- NULL
- },
- {
- XtNleftColumn,
- XtCColumn,
- XtRShort,
- sizeof(short),
- offset(text.left_column),
- XtRImmediate,
- (XtPointer)0
- },
- {
- XtNrightColumn,
- XtCColumn,
- XtRShort,
- sizeof(short),
- offset(text.right_column),
- XtRImmediate,
- (XtPointer)0
- },
- {
- XtNjustifyMode,
- XtCJustifyMode,
- XtRJustifyMode,
- sizeof(XawTextJustifyMode),
- offset(text.justify),
- XtRImmediate,
- (XtPointer)XawjustifyLeft
- },
-#endif /* OLDXAW */
-};
-#undef offset
-
-#define done(address, type) \
- { toVal->size = sizeof(type); toVal->addr = (XPointer)address; }
-
-static XrmQuark QWrapNever, QWrapLine, QWrapWord;
-#ifndef notdef
-static XrmQuark QScrollNever, QScrollWhenNeeded, QScrollAlways;
-#endif
-static XrmQuark QJustifyLeft, QJustifyRight, QJustifyCenter, QJustifyFull;
-
-/*ARGSUSED*/
-static void
-CvtStringToScrollMode(XrmValuePtr args, Cardinal *num_args,
- XrmValuePtr fromVal, XrmValuePtr toVal)
-{
- static XawTextScrollMode scrollMode = XawtextScrollNever;
- XrmQuark q;
- char name[32];
-
- XmuNCopyISOLatin1Lowered(name, (char *)fromVal->addr, sizeof(name));
- q = XrmStringToQuark(name);
-
- if (q == QScrollNever || q == QScrollWhenNeeded)
- scrollMode = XawtextScrollNever;
- else if (q == QScrollAlways)
- scrollMode = XawtextScrollAlways;
- else if (strcmp(name, "true") == 0 || strcmp(name, "1") == 0)
- scrollMode = XawtextScrollAlways;
- else if (strcmp(name, "false") == 0 || strcmp(name, "0") == 0)
- scrollMode = XawtextScrollNever;
- else
- XtStringConversionWarning((char *)fromVal->addr, XtRScrollMode);
-
- done(&scrollMode, XawTextScrollMode);
-}
-
-/*ARGSUSED*/
-static Boolean
-CvtScrollModeToString(Display *dpy, XrmValue *args, Cardinal *num_args,
- XrmValue *fromVal, XrmValue *toVal, XtPointer *data)
-{
- static char *buffer;
- Cardinal size;
-
- switch (*(XawTextScrollMode *)fromVal->addr) {
- case XawtextScrollNever:
- case XawtextScrollWhenNeeded:
- buffer = XtEtextScrollNever;
- break;
- case XawtextScrollAlways:
- buffer = XtEtextScrollAlways;
- break;
- default:
- XawTypeToStringWarning(dpy, XtRScrollMode);
- toVal->addr = NULL;
- toVal->size = 0;
- return (False);
- }
- size = strlen(buffer) + 1;
- if (toVal->addr != NULL) {
- if (toVal->size < size) {
- toVal->size = size;
- return (False);
- }
- strcpy((char *)toVal->addr, buffer);
- }
- else
- toVal->addr = (XPointer)buffer;
- toVal->size = sizeof(String);
-
- return (True);
-}
-
-/*ARGSUSED*/
-static void
-CvtStringToWrapMode(XrmValuePtr args, Cardinal *num_args,
- XrmValuePtr fromVal, XrmValuePtr toVal)
-{
- static XawTextWrapMode wrapMode = XawtextWrapNever;
- XrmQuark q;
- char lowerName[6];
-
- XmuNCopyISOLatin1Lowered(lowerName, (char *)fromVal->addr,
- sizeof(lowerName));
- q = XrmStringToQuark(lowerName);
-
- if (q == QWrapNever)
- wrapMode = XawtextWrapNever;
- else if (q == QWrapLine)
- wrapMode = XawtextWrapLine;
- else if (q == QWrapWord)
- wrapMode = XawtextWrapWord;
- else
- XtStringConversionWarning((char *)fromVal->addr, XtRWrapMode);
-
- done(&wrapMode, XawTextWrapMode);
-}
-
-/*ARGSUSED*/
-static Boolean
-CvtWrapModeToString(Display *dpy, XrmValue *args, Cardinal *num_args,
- XrmValue *fromVal, XrmValue *toVal, XtPointer *data)
-{
- static char *buffer;
- Cardinal size;
-
- switch (*(XawTextWrapMode *)fromVal->addr) {
- case XawtextWrapNever:
- buffer = XtEtextWrapNever;
- break;
- case XawtextWrapLine:
- buffer = XtEtextWrapLine;
- break;
- case XawtextWrapWord:
- buffer = XtEtextWrapWord;
- break;
- default:
- XawTypeToStringWarning(dpy, XtRWrapMode);
- toVal->addr = NULL;
- toVal->size = 0;
- return (False);
- }
- size = strlen(buffer) + 1;
- if (toVal->addr != NULL) {
- if (toVal->size < size) {
- toVal->size = size;
- return (False);
- }
- strcpy((char *)toVal->addr, buffer);
- }
- else
- toVal->addr = (XPointer)buffer;
- toVal->size = sizeof(String);
-
- return (True);
-}
-
-/*ARGSUSED*/
-static Boolean
-CvtStringToJustifyMode(Display *dpy, XrmValue *args, Cardinal *num_args,
- XrmValue *fromVal, XrmValue *toVal, XtPointer *data)
-{
- XawTextJustifyMode justify;
- XrmQuark q;
- char lowerName[8];
-
- XmuNCopyISOLatin1Lowered(lowerName, (char *)fromVal->addr,
- sizeof(lowerName));
- q = XrmStringToQuark(lowerName);
-
- if (q == QJustifyLeft)
- justify = XawjustifyLeft;
- else if (q == QJustifyRight)
- justify = XawjustifyRight;
- else if (q == QJustifyCenter)
- justify = XawjustifyCenter;
- else if(q == QJustifyFull)
- justify = XawjustifyFull;
- else {
- XtStringConversionWarning((char *)fromVal->addr, XtRJustifyMode);
- return (False);
- }
-
- toVal->size = sizeof(XawTextJustifyMode);
- *(XawTextJustifyMode *)(toVal->addr) = justify;
-
- return (True);
-}
-
-
-/*ARGSUSED*/
-static Boolean
-CvtJustifyModeToString(Display *dpy, XrmValue *args, Cardinal *num_args,
- XrmValue *fromVal, XrmValue *toVal, XtPointer *data)
-{
- static char *buffer;
- Cardinal size;
-
- switch (*(XawTextJustifyMode *)fromVal->addr) {
- case XawjustifyLeft:
- buffer = XtEtextJustifyLeft;
- break;
- case XawjustifyRight:
- buffer = XtEtextJustifyRight;
- break;
- case XawjustifyCenter:
- buffer = XtEtextJustifyCenter;
- break;
- case XawjustifyFull:
- buffer = XtEtextJustifyFull;
- break;
- default:
- XawTypeToStringWarning(dpy, XtRJustifyMode);
- toVal->addr = NULL;
- toVal->size = 0;
- return (False);
- }
- size = strlen(buffer) + 1;
- if (toVal->addr != NULL) {
- if (toVal->size < size) {
- toVal->size = size;
- return (False);
- }
- strcpy((char *)toVal->addr, buffer);
- }
- else
- toVal->addr = (XPointer)buffer;
- toVal->size = sizeof(String);
-
- return (True);
-}
-
-#undef done
-
-static void
-XawTextClassInitialize(void)
-{
- if (!XawFmt8Bit)
- FMT8BIT = XawFmt8Bit = XrmPermStringToQuark("FMT8BIT");
- if (!XawFmtWide)
- XawFmtWide = XrmPermStringToQuark("FMTWIDE");
-
- XawInitializeWidgetSet();
-
- textClassRec.core_class.num_actions = _XawTextActionsTableCount;
-
- QWrapNever = XrmPermStringToQuark(XtEtextWrapNever);
- QWrapLine = XrmPermStringToQuark(XtEtextWrapLine);
- QWrapWord = XrmPermStringToQuark(XtEtextWrapWord);
- XtAddConverter(XtRString, XtRWrapMode, CvtStringToWrapMode, NULL, 0);
- XtSetTypeConverter(XtRWrapMode, XtRString, CvtWrapModeToString,
- NULL, 0, XtCacheNone, NULL);
- QScrollNever = XrmPermStringToQuark(XtEtextScrollNever);
- QScrollWhenNeeded = XrmPermStringToQuark(XtEtextScrollWhenNeeded);
- QScrollAlways = XrmPermStringToQuark(XtEtextScrollAlways);
- XtAddConverter(XtRString, XtRScrollMode, CvtStringToScrollMode,
- NULL, 0);
- XtSetTypeConverter(XtRScrollMode, XtRString, CvtScrollModeToString,
- NULL, 0, XtCacheNone, NULL);
- QJustifyLeft = XrmPermStringToQuark(XtEtextJustifyLeft);
- QJustifyRight = XrmPermStringToQuark(XtEtextJustifyRight);
- QJustifyCenter = XrmPermStringToQuark(XtEtextJustifyCenter);
- QJustifyFull = XrmPermStringToQuark(XtEtextJustifyFull);
- XtSetTypeConverter(XtRString, XtRJustifyMode, CvtStringToJustifyMode,
- NULL, 0, XtCacheNone, NULL);
- XtSetTypeConverter(XtRJustifyMode, XtRString, CvtJustifyModeToString,
- NULL, 0, XtCacheNone, NULL);
-}
-
-/*
- * Function:
- * PositionHScrollBar
- *
- * Parameters:
- * ctx - text widget
- *
- * Description:
- * Positions the Horizontal scrollbar.
- */
-static void
-PositionHScrollBar(TextWidget ctx)
-{
- Widget hbar = ctx->text.hbar, vbar = ctx->text.vbar;
- Position x, y;
- Dimension width, height;
-
- if (ctx->text.hbar == NULL)
- return;
-
- if (vbar != NULL)
- x = XtWidth(vbar);
- else
- x = -XtBorderWidth(hbar);
- y = XtHeight(ctx) - XtHeight(hbar) - XtBorderWidth(hbar);
- if (vbar != NULL) {
- width = XtWidth(ctx) - XtWidth(vbar) - XtBorderWidth(vbar);
- if (width > XtWidth(ctx))
- width = XtWidth(ctx);
- }
- else
- width = XtWidth(ctx);
- height = XtHeight(hbar);
-
- XtConfigureWidget(hbar, x, y, width, height, XtBorderWidth(hbar));
-}
-
-/*
- * Function:
- * PositionVScrollBar
- *
- * Parameters:
- * ctx - text widget
- *
- * Description:
- * Positions the Vertical scrollbar.
- */
-static void
-PositionVScrollBar(TextWidget ctx)
-{
- Widget vbar = ctx->text.vbar;
- Position x, y;
- Dimension width, height;
-
- if (vbar == NULL)
- return;
-
- x = y = -XtBorderWidth(vbar);
- height = XtHeight(ctx);
- width = XtWidth(vbar);
-
- XtConfigureWidget(vbar, x, y, width, height, XtBorderWidth(vbar));
-}
-
-static void
-CreateVScrollBar(TextWidget ctx)
-{
- Widget vbar;
-
- if (ctx->text.vbar != NULL)
- return;
-
- ctx->text.vbar = vbar =
- XtCreateWidget("vScrollbar", scrollbarWidgetClass, (Widget)ctx, NULL, 0);
- XtAddCallback(vbar, XtNscrollProc, VScroll, (XtPointer)ctx);
- XtAddCallback(vbar, XtNjumpProc, VJump, (XtPointer)ctx);
-
- ctx->text.r_margin.left += XtWidth(vbar) + XtBorderWidth(vbar);
- ctx->text.left_margin = ctx->text.margin.left = ctx->text.r_margin.left;
-
- PositionVScrollBar(ctx);
- PositionHScrollBar(ctx);
- TextSinkResize(ctx->text.sink);
-
- if (XtIsRealized((Widget)ctx)) {
- XtRealizeWidget(vbar);
- XtMapWidget(vbar);
- }
- XtSetKeyboardFocus(vbar, (Widget)ctx);
-}
-
-/*
- * Function:
- * DestroyVScrollBar
- *
- * Parameters:
- * ctx - parent text widget
- *
- * Description:
- * Removes vertical ScrollBar.
- */
-static void
-DestroyVScrollBar(TextWidget ctx)
-{
- Widget vbar = ctx->text.vbar;
-
- if (vbar == NULL)
- return;
-
- ctx->text.r_margin.left -= XtWidth(vbar) + XtBorderWidth(vbar);
- ctx->text.left_margin = ctx->text.margin.left = ctx->text.r_margin.left;
-
- XtDestroyWidget(vbar);
- ctx->text.vbar = NULL;
- if (!ctx->core.being_destroyed) {
- PositionHScrollBar(ctx);
- TextSinkResize(ctx->text.sink);
- }
-}
-
-static void
-CreateHScrollBar(TextWidget ctx)
-{
- Arg args[1];
- Widget hbar;
- int bottom;
-
- if (ctx->text.hbar != NULL)
- return;
-
- XtSetArg(args[0], XtNorientation, XtorientHorizontal);
- ctx->text.hbar = hbar =
- XtCreateWidget("hScrollbar", scrollbarWidgetClass, (Widget)ctx, args, 1);
- XtAddCallback(hbar, XtNscrollProc, HScroll, (XtPointer)ctx);
- XtAddCallback(hbar, XtNjumpProc, HJump, (XtPointer)ctx);
-
- bottom = ctx->text.r_margin.bottom + XtHeight(hbar) + XtBorderWidth(hbar);
-
- ctx->text.margin.bottom = ctx->text.r_margin.bottom = bottom;
-
- PositionHScrollBar(ctx);
- TextSinkResize(ctx->text.sink);
-
- if (XtIsRealized((Widget)ctx)) {
- XtRealizeWidget(hbar);
- XtMapWidget(hbar);
- }
- XtSetKeyboardFocus(hbar, (Widget)ctx);
-}
-
-/*
- * Function:
- * DestroyHScrollBar
- *
- * Parameters:
- * ctx - parent text widget
- *
- * Description:
- * Removes horizontal ScrollBar.
- */
-static void
-DestroyHScrollBar(TextWidget ctx)
-{
- Widget hbar = ctx->text.hbar;
-
- if (hbar == NULL)
- return;
-
- ctx->text.r_margin.bottom -= XtHeight(hbar) + XtBorderWidth(hbar);
- ctx->text.margin.bottom = ctx->text.r_margin.bottom;
-
- XtDestroyWidget(hbar);
- ctx->text.hbar = NULL;
- if (!ctx->core.being_destroyed)
- TextSinkResize(ctx->text.sink);
-}
-
-/*ARGSUSED*/
-static void
-XawTextInitialize(Widget request, Widget cnew,
- ArgList args, Cardinal *num_args)
-{
- TextWidget ctx = (TextWidget)cnew;
-
- ctx->text.lt.lines = 0;
- ctx->text.lt.info = (XawTextLineTableEntry *)
- XtCalloc(1, sizeof(XawTextLineTableEntry));
-#ifndef OLDXAW
- ctx->text.lt.base_line = 1;
-#endif
- (void)bzero(&ctx->text.origSel, sizeof(XawTextSelection));
- (void)bzero(&ctx->text.s, sizeof(XawTextSelection));
- ctx->text.s.type = XawselectPosition;
- ctx->text.salt = NULL;
- ctx->text.hbar = ctx->text.vbar = NULL;
- ctx->text.lasttime = 0;
- ctx->text.time = 0;
- ctx->text.showposition = True;
- ctx->text.lastPos = ctx->text.source != NULL ?
- XawTextGetLastPosition(ctx) : 0;
- ctx->text.file_insert = NULL;
- ctx->text.search = NULL;
- ctx->text.update = XmuNewScanline(0, 0, 0);
- ctx->text.gc = XtGetGC(cnew, 0, 0);
- ctx->text.hasfocus = False;
- ctx->text.margin = ctx->text.r_margin; /* Strucure copy */
- ctx->text.left_margin = ctx->text.r_margin.left;
- ctx->text.update_disabled = False;
- ctx->text.clear_to_eol = True;
- ctx->text.old_insert = -1;
- ctx->text.mult = 1;
- ctx->text.salt2 = NULL;
- ctx->text.from_left = -1;
-
-#ifndef OLDXAW
- ctx->text.numeric = False;
- ctx->text.selection_state = False;
- ctx->text.kill_ring = 0;
-
- ctx->text.line_number = -1;
- ctx->text.column_number = -1;
- ctx->text.source_changed = SRC_CHANGE_NONE;
-
- ctx->text.kill_ring_ptr = NULL;
- ctx->text.overwrite = False;
-#endif
-
- if (XtHeight(ctx) == DEFAULT_TEXT_HEIGHT) {
- XtHeight(ctx) = VMargins(ctx);
- if (ctx->text.sink != NULL)
- XtHeight(ctx) += XawTextSinkMaxHeight(ctx->text.sink, 1);
- }
-
- if (ctx->text.scroll_vert == XawtextScrollAlways)
- CreateVScrollBar(ctx);
- if (ctx->text.scroll_horiz == XawtextScrollAlways)
- CreateHScrollBar(ctx);
-
-#ifndef OLDXAW
- if (ctx->text.left_column < 0)
- ctx->text.left_column = 0;
- if (ctx->text.right_column < 0)
- ctx->text.right_column = 0;
-#endif
-}
-
-static void
-XawTextRealize(Widget w, XtValueMask *mask, XSetWindowAttributes *attr)
-{
- TextWidget ctx = (TextWidget)w;
-
- (*textClassRec.core_class.superclass->core_class.realize)(w, mask, attr);
-
- if (ctx->text.hbar != NULL) {
- XtRealizeWidget(ctx->text.hbar);
- XtMapWidget(ctx->text.hbar);
- }
-
- if (ctx->text.vbar != NULL) {
- XtRealizeWidget(ctx->text.vbar);
- XtMapWidget(ctx->text.vbar);
- }
-
- _XawTextBuildLineTable(ctx, ctx->text.lt.top, True);
-
-#ifndef OLDXAW
- _XawTextSetLineAndColumnNumber(ctx, True);
-#endif
-}
-
-/* Utility routines for support of Text */
-static void
-_CreateCutBuffers(Display *d)
-{
- static struct _DisplayRec {
- struct _DisplayRec *next;
- Display *dpy;
- } *dpy_list = NULL;
- struct _DisplayRec *dpy_ptr;
-
- for (dpy_ptr = dpy_list; dpy_ptr != NULL; dpy_ptr = dpy_ptr->next)
- if (dpy_ptr->dpy == d)
- return;
-
- dpy_ptr = XtNew(struct _DisplayRec);
- dpy_ptr->next = dpy_list;
- dpy_ptr->dpy = d;
- dpy_list = dpy_ptr;
-
-#define Create(buffer) \
- XChangeProperty(d, RootWindow(d, 0), buffer, XA_STRING, 8, \
- PropModeAppend, NULL, 0);
-
- Create(XA_CUT_BUFFER0);
- Create(XA_CUT_BUFFER1);
- Create(XA_CUT_BUFFER2);
- Create(XA_CUT_BUFFER3);
- Create(XA_CUT_BUFFER4);
- Create(XA_CUT_BUFFER5);
- Create(XA_CUT_BUFFER6);
- Create(XA_CUT_BUFFER7);
-
-#undef Create
-}
-
-/*
- * Procedure to manage insert cursor visibility for editable text. It uses
- * the value of ctx->insertPos and an implicit argument. In the event that
- * position is immediately preceded by an eol graphic, then the insert cursor
- * is displayed at the beginning of the next line.
- */
-static void
-InsertCursor(Widget w, XawTextInsertState state)
-{
- TextWidget ctx = (TextWidget)w;
- int x, y;
- int line;
-
- if (ctx->text.lt.lines < 1)
- return;
-
- if (ctx->text.display_caret &&
- LineAndXYForPosition(ctx, ctx->text.insertPos, &line, &x, &y)) {
- if (line < ctx->text.lt.lines)
- y += (ctx->text.lt.info[line + 1].y - ctx->text.lt.info[line].y) + 1;
- else
- y += (ctx->text.lt.info[line].y - ctx->text.lt.info[line - 1].y) + 1;
-
- XawTextSinkInsertCursor(ctx->text.sink, x, y, state);
- }
-
- /* Keep Input Method up to speed */
- if (ctx->simple.international) {
- Arg list[1];
-
- XtSetArg(list[0], XtNinsertPosition, ctx->text.insertPos);
- _XawImSetValues(w, list, 1);
- }
-}
-
-/*
- * Procedure to register a span of text that is no longer valid on the display
- * It is used to avoid a number of small, and potentially overlapping, screen
- * updates.
-*/
-void
-_XawTextNeedsUpdating(TextWidget ctx,
- XawTextPosition left, XawTextPosition right)
-{
- XmuSegment segment;
-
- if (left >= right)
- return;
-
- segment.x1 = (int)left;
- segment.x2 = (int)right;
- (void)XmuScanlineOrSegment(ctx->text.update, &segment);
-}
-
-/*
- * Procedure to read a span of text in Ascii form. This is purely a hack and
- * we probably need to add a function to sources to provide this functionality.
- * [note: this is really a private procedure but is used in multiple modules].
- */
-char *
-_XawTextGetText(TextWidget ctx, XawTextPosition left, XawTextPosition right)
-{
- char *result, *tempResult;
- XawTextBlock text;
- int bytes;
-
- if (XawTextFormat(ctx, XawFmt8Bit))
- bytes = sizeof(unsigned char);
- else if (XawTextFormat(ctx, XawFmtWide))
- bytes = sizeof(wchar_t);
- else /* if there is another fomat, add here */
- bytes = 1;
-
- /* leave space for ZERO */
- tempResult = result = XtMalloc((unsigned)(right - left + ONE) * bytes);
-
- while (left < right) {
- left = SrcRead(ctx->text.source, left, &text, (int)(right - left));
- if (!text.length)
- break;
- memmove(tempResult, text.ptr, (unsigned)(text.length * bytes));
- tempResult += text.length * bytes;
- }
-
- if (bytes == sizeof(wchar_t))
- *((wchar_t*)tempResult) = (wchar_t)0;
- else
- *tempResult = '\0';
-
- return (result);
-}
-
-/* Like _XawTextGetText, but enforces ICCCM STRING type encoding. This
- * routine is currently used to put just the ASCII chars in the selection
- * into a cut buffer.
- */
-char *
-_XawTextGetSTRING(TextWidget ctx, XawTextPosition left, XawTextPosition right)
-{
- unsigned char *s;
- unsigned char c;
- long i, j, n;
- wchar_t *ws, wc;
-
- /* allow ESC in accordance with ICCCM */
- if (XawTextFormat(ctx, XawFmtWide)) {
- MultiSinkObject sink = (MultiSinkObject)ctx->text.sink;
- ws = (wchar_t *)_XawTextGetText(ctx, left, right);
- n = wcslen(ws);
- for (j = 0, i = 0; j < n; j++) {
- wc = ws[j];
- if (XwcTextEscapement (sink->multi_sink.fontset, &wc, 1)
- || (wc == _Xaw_atowc(XawTAB)) || (wc == _Xaw_atowc(XawLF))
- || (wc == _Xaw_atowc(XawESC)))
- ws[i++] = wc;
- }
- ws[i] = (wchar_t)0;
- return ((char *)ws);
- }
- else {
- s = (unsigned char *)_XawTextGetText(ctx, left, right);
- /* only HT and NL control chars are allowed, strip out others */
- n = strlen((char *)s);
- i = 0;
- for (j = 0; j < n; j++) {
- c = s[j];
- if (((c >= 0x20) && c <= 0x7f)
- ||(c >= 0xa0) || (c == XawTAB) || (c == XawLF)
- || (c == XawESC)) {
- s[i] = c;
- i++;
- }
- }
- s[i] = 0;
-
- return ((char *)s);
- }
-}
-
-/*
- * This routine maps an x and y position in a window that is displaying text
- * into the corresponding position in the source.
- */
-static XawTextPosition
-PositionForXY(TextWidget ctx, int x, int y)
-{
- int fromx, line, width, height;
- XawTextPosition position;
-
- if (ctx->text.lt.lines == 0)
- return (0);
-
- for (line = 0; line < ctx->text.lt.lines - 1; line++) {
- if (y <= ctx->text.lt.info[line + 1].y)
- break;
- }
- position = ctx->text.lt.info[line].position;
- if (position >= ctx->text.lastPos)
- return (ctx->text.lastPos);
- fromx = ctx->text.left_margin;
- XawTextSinkFindPosition(ctx->text.sink, position, fromx, x - fromx,
- False, &position, &width, &height);
-
- if (position > ctx->text.lastPos)
- return (ctx->text.lastPos);
-
- if (position >= ctx->text.lt.info[line + 1].position)
- position = SrcScan(ctx->text.source, ctx->text.lt.info[line + 1].position,
- XawstPositions, XawsdLeft, 1, True);
-
- return (position);
-}
-
-/*
- * This routine maps a source position in to the corresponding line number
- * of the text that is displayed in the window.
- */
-static int
-LineForPosition(TextWidget ctx, XawTextPosition position)
-{
- int line;
-
- for (line = 0; line < ctx->text.lt.lines; line++)
- if (position < ctx->text.lt.info[line + 1].position)
- break;
-
- return (line);
-}
-
-/*
- * This routine maps a source position into the corresponding line number
- * and the x, y coordinates of the text that is displayed in the window.
- */
-static Bool
-LineAndXYForPosition(TextWidget ctx, XawTextPosition pos,
- int *line, int *x, int *y)
-{
- XawTextPosition linePos, endPos;
- Boolean visible;
- int realW, realH;
-
- *line = 0;
- *x = ctx->text.left_margin;
- *y = ctx->text.margin.top + 1;
- if ((visible = IsPositionVisible(ctx, pos)) != False) {
- *line = LineForPosition(ctx, pos);
- *y = ctx->text.lt.info[*line].y;
- linePos = ctx->text.lt.info[*line].position;
- XawTextSinkFindDistance(ctx->text.sink, linePos,
- *x, pos, &realW, &endPos, &realH);
- *x += realW;
- }
-
- return (visible);
-}
-
-/*
- * This routine builds a line table. It does this by starting at the
- * specified position and measuring text to determine the staring position
- * of each line to be displayed. It also determines and saves in the
- * linetable all the required metrics for displaying a given line (e.g.
- * x offset, y offset, line length, etc.).
- */
-void
-_XawTextBuildLineTable(TextWidget ctx, XawTextPosition position,
- _XtBoolean force_rebuild)
-{
- Dimension height = 0;
- int lines = 0;
- Cardinal size;
-
- if ((int)XtHeight(ctx) > VMargins(ctx)) {
- height = XtHeight(ctx) - VMargins(ctx);
- lines = XawTextSinkMaxLines(ctx->text.sink, height);
- }
- size = sizeof(XawTextLineTableEntry) * (lines + 1);
-
- if (lines != ctx->text.lt.lines || ctx->text.lt.info == NULL) {
- ctx->text.lt.info = (XawTextLineTableEntry *)
- XtRealloc((char *)ctx->text.lt.info, size);
- ctx->text.lt.lines = lines;
- force_rebuild = True;
- }
-
- if (force_rebuild) {
- (void)bzero((char *)ctx->text.lt.info, size);
- /* force a text update in the first text line if it is visible */
- ctx->text.lt.info[0].position = (XawTextPosition)-1;
- }
- if (position != ctx->text.lt.info[0].position) {
- (void)_BuildLineTable(ctx, position, 0);
- ctx->text.clear_to_eol = True;
- }
-}
-
-/*
- * We may need to resize the line table here, since there maybe lines with
- * different fonts (that can be shorter or taller than the default one)
- */
-static XawTextPosition
-_BuildLineTable(TextWidget ctx, XawTextPosition position, int line)
-{
- XawTextLineTableEntry *lt = ctx->text.lt.info + line;
- XawTextPosition end, update_from = -1;
- Position y;
- int wwidth, width, height;
-#ifndef OLDXAW
- Widget src = ctx->text.source;
-#endif
- int max_y = (int)XtHeight(ctx) - (int)ctx->text.margin.bottom;
-
- if (ctx->text.wrap == XawtextWrapNever)
- wwidth = 0x7fffffff;
- else
- wwidth = GetMaxTextWidth(ctx);
-
- /* XXX y may change, due to font size changes. See later */
- y = line == 0 ? ctx->text.margin.top : lt->y;
-
-#ifndef OLDXAW
- if (ctx->text.lt.base_line < 0) {
- if (line == 0)
- ctx->text.lt.top = position;
- }
- else if (line == 0) {
- XawTextPosition pos = ctx->text.lt.top;
- int base_line = ctx->text.lt.base_line;
-
- if (position == 0)
- base_line = 1;
- else if (ctx->text.lt.base_line == 0 ||
- ctx->text.source_changed == SRC_CHANGE_OVERLAP) {
- pos = 0;
- base_line = 1;
-
- while (pos < position) {
- pos = SrcScan(src, pos, XawstEOL, XawsdRight, 1, True);
- if (pos <= position) {
- ++base_line;
- if (pos == ctx->text.lastPos) {
- base_line -= !_XawTextSourceNewLineAtEOF(src);
- break;
- }
- }
- }
- }
- else if (ctx->text.wrap == XawtextWrapNever
- && IsPositionVisible(ctx, position))
- base_line += LineForPosition(ctx, position);
- else if (pos < position) {
- while (pos < position) {
- pos = SrcScan(src, pos, XawstEOL, XawsdRight, 1, True);
- if (pos <= position) {
- ++base_line;
- if (pos == ctx->text.lastPos) {
- base_line -= !_XawTextSourceNewLineAtEOF(src);
- break;
- }
- }
- }
- }
- else if (pos > position) {
- while (pos > position) {
- pos = SrcScan(src, pos, XawstEOL, XawsdLeft, 1, False);
- if (--pos >= position)
- --base_line;
- }
- }
-
- ctx->text.lt.top = position;
- ctx->text.lt.base_line = base_line;
- }
-#else
- if (line == 0)
- ctx->text.lt.top = position;
-#endif
-
- /* CONSTCOND */
- while (True) {
- XawTextSinkFindPosition(ctx->text.sink, position, ctx->text.left_margin,
- wwidth, ctx->text.wrap == XawtextWrapWord,
- &end, &width, &height);
-
- if (lt->position != position) {
- _XawTextNeedsUpdating(ctx, position,
- end <= position ? position + 1 : end);
- ctx->text.clear_to_eol = True;
- lt->position = position;
- }
- if (lt->y != y) {
- if (update_from < 0)
- update_from = line == 0 ?
- ctx->text.lt.info[0].position :
- ctx->text.lt.info[line - 1].position;
- lt->y = y;
- ctx->text.clear_to_eol = True;
- }
- if (lt->textWidth != width) {
- if (lt->textWidth > width)
- ctx->text.clear_to_eol = True;
- lt->textWidth = width;
- }
- y += height;
-
- if (end > ctx->text.lastPos) {
- position = end;
- ctx->text.clear_to_eol = True;
- _XawTextNeedsUpdating(ctx, end, end + ctx->text.lt.lines - line);
- while (line++ < ctx->text.lt.lines) {
- if (line > 1 && y > max_y) {
- ctx->text.lt.lines = line - 1;
- break;
- }
- ++lt;
- if (lt->y != y) {
- if (update_from < 0)
- update_from = line < 2 ?
- ctx->text.lt.info[0].position :
- ctx->text.lt.info[line - 2].position;
- lt->y = y;
- }
- lt->position = ++position;
- lt->textWidth = 0;
- y += height;
- }
- if (update_from >= 0)
- _XawTextNeedsUpdating(ctx, update_from,
- ctx->text.lt.info[ctx->text.lt.lines].position);
- _XawTextSetScrollBars(ctx);
-
- return (ctx->text.lastPos);
- }
-
- if (line && y > max_y)
- /* will return in the next loop */
- ctx->text.lt.lines = line;
-
- if (++line > ctx->text.lt.lines && y < max_y) {
- /* grow the line table */
- ctx->text.lt.info = (XawTextLineTableEntry *)
- XtRealloc((char *)ctx->text.lt.info,
- sizeof(XawTextLineTableEntry) * (line + 1));
- lt = ctx->text.lt.info + line;
- bzero(lt, sizeof(XawTextLineTableEntry));
- ++ctx->text.lt.lines;
- }
- else
- ++lt;
- if (position == end)
- ++position;
- else
- position = end;
-
- if (line > ctx->text.lt.lines) {
- if (update_from >= 0)
- _XawTextNeedsUpdating(ctx, update_from,
- ctx->text.lt.info[ctx->text.lt.lines].position);
- _XawTextSetScrollBars(ctx);
-
- return (position);
- }
- }
- /*NOTREACHED*/
-}
-
-/*
- * Function:
- * GetWidestLine
- *
- * Parameters:
- * ctx - text widget
- *
- * Description:
- * Returns the width (in pixels) of the widest line that
- * is currently visable.
- *
- * Returns:
- * The width of the widest line
- */
-static unsigned int
-GetWidestLine(TextWidget ctx)
-{
- int i;
- unsigned int widest;
- XawTextLineTablePtr lt = &(ctx->text.lt);
-
- for (i = 0, widest = 0; i < lt->lines; i++)
- if (widest < lt->info[i].textWidth)
- widest = lt->info[i].textWidth;
-
- return (widest);
-}
-
-/*
- * This routine is used by Text to notify an associated scrollbar of the
- * correct metrics (position and shown fraction) for the text being currently
- * displayed in the window.
- */
-void
-_XawTextSetScrollBars(TextWidget ctx)
-{
- float first, last, denom, widest;
-
- if (ctx->text.scroll_vert == XawtextScrollAlways) {
- if (ctx->text.lastPos == 0)
- first = 0.0;
- else
- first = ctx->text.lt.top / (float)ctx->text.lastPos;
-
- if (ctx->text.lt.info[ctx->text.lt.lines].position < ctx->text.lastPos)
- last = ctx->text.lt.info[ctx->text.lt.lines].position /
- (float)ctx->text.lastPos;
- else
- last = 1.0;
-
- XawScrollbarSetThumb(ctx->text.vbar, first, last - first);
- }
-
- if (ctx->text.scroll_horiz == XawtextScrollAlways) {
- denom = GetWidestLine(ctx);
- if (denom <= 0)
- denom = (int)XtWidth(ctx) - RHMargins(ctx);
- if (denom <= 0)
- denom = 1;
- widest = ((int)XtWidth(ctx) - RHMargins(ctx)) / denom;
- first = ctx->text.r_margin.left - ctx->text.left_margin;
- first /= denom;
-
- XawScrollbarSetThumb(ctx->text.hbar, first, widest);
- }
-}
-
-static void
-DoCopyArea(TextWidget ctx, int src_x, int src_y,
- unsigned int width, unsigned int height, int dst_x, int dst_y)
-{
- int x1, y1, x2, y2;
-
- x1 = ctx->text.r_margin.left;
- y1 = ctx->text.r_margin.top;
- x2 = XtWidth(ctx) - ctx->text.r_margin.right;
- y2 = XtHeight(ctx) - ctx->text.r_margin.bottom;
-
- if (x1 >= x2 || y1 >= y2)
- return;
-
- src_x = XawMax(x1, XawMin(src_x, x2));
- src_y = XawMax(y1, XawMin(src_y, y2));
- dst_x = XawMax(x1, XawMin(dst_x, x2));
- dst_y = XawMax(y1, XawMin(dst_y, y2));
- width = XawMax(0, XawMin(x2 - dst_x, (int)width));
- height = XawMax(0, XawMin(y2 - dst_y, (int)height));
-
- XCopyArea(XtDisplay(ctx), XtWindow(ctx), XtWindow(ctx), ctx->text.gc,
- src_x, src_y, width, height, dst_x, dst_y);
-}
-
-/*
- * Function:
- * XawTextScroll
- *
- * Parameters:
- * ctx - text widget
- * vlines - number of lines to scroll vertically
- * hpixels - number of pixels to scroll horizontally
- *
- * Description:
- * Generic function for scrolling the text window.
- * Allows vertical and horizontal scroll at the same time.
- */
-void
-XawTextScroll(TextWidget ctx, int vlines, int hpixels)
-{
- XawTextPosition top, tmp, update_from, update_to;
- XawTextLineTable *lt;
- Arg arglist[1];
- int y0, y1, y2, count, dim, wwidth, lines = ctx->text.lt.lines;
- int vwidth, vheight; /* visible width and height */
- Bool scroll;
-
- vwidth = (int)XtWidth(ctx) - RHMargins(ctx);
- vheight = (int)XtHeight(ctx) - RVMargins(ctx);
- lt = &ctx->text.lt;
-
- if (!lt || vwidth <= 0 || vheight <= 0)
- return;
-
- if ((scroll = ctx->core.background_pixmap == XtUnspecifiedPixmap) == True) {
- dim = lt->info[1].y - lt->info[0].y;
- for (count = 1; count < lt->lines - 1; count++)
- if (lt->info[count + 1].y - lt->info[count].y != dim) {
- scroll = False;
- break;
- }
- }
-
- wwidth = GetMaxTextWidth(ctx);
-
- /*
- * Do the horizontall scrolling
- */
- if (hpixels < 0 && ctx->text.left_margin - hpixels > ctx->text.r_margin.left)
- hpixels = ctx->text.left_margin - ctx->text.r_margin.left;
- ctx->text.left_margin -= hpixels;
-
- update_from = lt->top; /* remember the old value */
- /*
- * Checks the requested number of lines and calculates the top
- * of the line table
- */
- if (vlines < 0) { /* VScroll Up */
- if (IsPositionVisible(ctx, 0))
- vlines = 0;
- else if (ctx->text.wrap != XawtextWrapNever) {
- XawTextPosition end;
- int n_lines = 0;
-
- count = -vlines;
- end = lt->top;
- while (n_lines < count) {
- top = SrcScan(ctx->text.source, end, XawstEOL,
- XawsdLeft, 2, False);
- n_lines += CountLines(ctx, top, end);
- end = top;
- }
-
- while (count++ < n_lines) {
- tmp = top;
- XawTextSinkFindPosition(ctx->text.sink, top,
- ctx->text.left_margin,
- wwidth,ctx->text.wrap == XawtextWrapWord,
- &top, &dim, &dim);
- if (tmp == top)
- ++top;
- }
- }
- else
- top = SrcScan(ctx->text.source, lt->top, XawstEOL,
- XawsdLeft, -vlines + 1, False);
- if (-vlines >= ctx->text.lt.lines)
- scroll = False;
- }
- else if (vlines > 0) { /* VScroll Down */
- if (LineForPosition(ctx, ctx->text.lastPos) == 0)
- vlines = 0;
- if (vlines < lt->lines)
- top = XawMin(lt->info[vlines].position, ctx->text.lastPos);
- else if (ctx->text.wrap == XawtextWrapNever)
- top = SrcScan(ctx->text.source,
- SrcScan(ctx->text.source, lt->top,
- XawstEOL, XawsdRight, vlines,
- True),
- XawstEOL, XawsdLeft, 1, False);
- else {
- top = lt->top;
- count = 0;
- while (count++ < vlines) {
- tmp = top;
- XawTextSinkFindPosition(ctx->text.sink, top,
- ctx->text.left_margin,
- wwidth, ctx->text.wrap == XawtextWrapWord,
- &top, &dim, &dim);
- if (tmp == top)
- ++top;
- }
- }
- if (vlines >= ctx->text.lt.lines
- || lt->info[vlines].position >= ctx->text.lastPos)
- scroll = False;
- }
-
- if (!vlines) {
- if (hpixels) {
- ClearWindow(ctx);
- ctx->text.clear_to_eol = True;
- }
- _XawTextSetScrollBars(ctx);
- return;
- }
-
- /* Flushes any pending updates. Normally, there may be a call to
- * XawTextUnsetSelection not yet updated.
- */
- if (!hpixels && scroll) {
- ctx->text.clear_to_eol = True;
- FlushUpdate(ctx);
- }
-
- /*
- * Rebuild the line table, doing the vertical scroll
- */
- (void)_BuildLineTable(ctx, top, 0);
- lt = &ctx->text.lt;
- if (scroll) {
- for (count = 0; count < lt->lines - 1; count++)
- if (lt->info[count + 1].y - lt->info[count].y != dim) {
- scroll = False;
- break;
- }
- }
-
- XtSetArg(arglist[0], XtNinsertPosition, lt->top + lt->lines);
- _XawImSetValues((Widget)ctx, arglist, 1);
-
- if (hpixels || !scroll || lines != lt->lines)
- return;
-
- /* _BuildLineTable updates everything if the top position changes.
- * It is not required here.
- */
- (void)XmuScanlineXor(ctx->text.update, ctx->text.update);
- if (vlines < 0 && IsPositionVisible(ctx, 0))
- vlines = -LineForPosition(ctx, update_from);
-
- y0 = ctx->text.r_margin.top;
- if (vlines < 0) {
- update_from = lt->top;
- update_to = lt->info[-vlines + 1].position - 1;
- y1 = lt->info[lt->lines + vlines].y;
- y2 = lt->info[-vlines].y;
- DoCopyArea(ctx, ctx->text.r_margin.left, y0, vwidth,
- y1 - y0,
- ctx->text.r_margin.left, y2);
- }
- else {
- update_from = lt->info[lt->lines - vlines].position;
- update_to = lt->info[lt->lines].position;
- y1 = lt->info[lt->lines - vlines].y;
- y2 = lt->info[vlines].y;
- DoCopyArea(ctx, ctx->text.r_margin.left, y2,
- vwidth, lt->info[lt->lines].y - y2,
- ctx->text.r_margin.left, y0);
- }
- _XawTextNeedsUpdating(ctx, update_from, update_to);
- ctx->text.clear_to_eol = True;
-}
-
-/*
- * The routine will scroll the displayed text by lines. If the arg is
- * positive, move up; otherwise, move down. [note: this is really a private
- * procedure but is used in multiple modules].
- */
-void
-_XawTextVScroll(TextWidget ctx, int n)
-{
- XawTextScroll(ctx, n, 0);
-}
-
-/*ARGSUSED*/
-static void
-HScroll(Widget w, XtPointer closure, XtPointer callData)
-{
- TextWidget ctx = (TextWidget)closure;
- long pixels = (long)callData;
-
- if (pixels > 0) {
- long max;
-
- max = (int)GetWidestLine(ctx) + ctx->text.left_margin -
- ctx->text.r_margin.left;
- max = XawMax(0, max);
- pixels = XawMin(pixels, max);
- }
-
- if (pixels) {
- _XawTextPrepareToUpdate(ctx);
- XawTextScroll(ctx, 0, pixels);
- _XawTextExecuteUpdate(ctx);
- }
-}
-
-/*ARGSUSED*/
-static void
-HJump(Widget w, XtPointer closure, XtPointer callData)
-{
- TextWidget ctx = (TextWidget)closure;
- float percent = *(float *)callData;
- long pixels;
-
- pixels = ctx->text.left_margin -
- (ctx->text.r_margin.left - (int)(percent * GetWidestLine(ctx)));
-
- HScroll(w, (XtPointer)ctx, (XtPointer)pixels);
-}
-
-/*
- * Function:
- * UpdateTextInLine
- *
- * Parameters:
- * ctx - text widget
- * line - line to update
- * x1 - left pixel
- * x2 - right pixel
- *
- * Description:
- * Updates the text in the given line and pixel interval
- */
-static void
-UpdateTextInLine(TextWidget ctx, int line, int x1, int x2)
-{
- XawTextLineTableEntry *lt = ctx->text.lt.info + line;
- XawTextPosition left, right;
- int from_x, width, height;
-
- if (lt->position >= ctx->text.lastPos
- || ctx->text.left_margin > x2
- || (int)lt->textWidth + ctx->text.left_margin < x1) {
- /* Mark line to be cleared */
- if (ctx->text.clear_to_eol)
- _XawTextNeedsUpdating(ctx, lt->position, lt->position + 1);
- return;
- }
-
- from_x = ctx->text.left_margin;
- XawTextSinkFindPosition(ctx->text.sink, lt->position,
- from_x, x1 - from_x,
- False, &left, &width, &height);
- if (line == ctx->text.lt.lines)
- right = -1;
- else if (x2 >= lt->textWidth - from_x)
- right = lt[1].position - 1;
- else {
- from_x += width;
- XawTextSinkFindPosition(ctx->text.sink, left,
- from_x, x2 - from_x,
- False, &right, &width, &height);
- }
-
- if ((right < 0) || (right + 1 <= lt[1].position))
- ++right;
-
- /* Mark text interval to be repainted */
- _XawTextNeedsUpdating(ctx, left, right);
-}
-
-/*
- * The routine will scroll the displayed text by pixels. If the calldata is
- * positive, move up; otherwise, move down.
- */
-/*ARGSUSED*/
-static void
-VScroll(Widget w, XtPointer closure, XtPointer callData)
-{
- TextWidget ctx = (TextWidget)closure;
- long height, lines = (long)callData;
-
- height = XtHeight(ctx) - VMargins(ctx);
- if (height < 1)
- height = 1;
- lines = (lines * ctx->text.lt.lines) / height;
- _XawTextPrepareToUpdate(ctx);
- XawTextScroll(ctx, lines, 0);
- _XawTextExecuteUpdate(ctx);
-}
-
-/*ARGSUSED*/
-static void
-VJump(Widget w, XtPointer closure, XtPointer callData)
-{
- float percent = *(float *)callData;
- TextWidget ctx = (TextWidget)closure;
- XawTextPosition top, last, position, tmp;
- XawTextLineTable *lt = &(ctx->text.lt);
- int dim, vlines = 0, wwidth = GetMaxTextWidth(ctx);
- Bool scroll = True;
-
- position = percent * ctx->text.lastPos;
- top = lt->top;
-
- if (!lt->lines || (position >= lt->top && position < lt->info[1].position)) {
- _XawTextSetScrollBars(ctx);
- return;
- }
-
-#ifndef OLDXAW
- ctx->text.lt.base_line = -1;
-#endif
-
- if (position > lt->top) { /* VScroll Up */
- if (position > lt->top && position < lt->info[lt->lines].position)
- vlines = LineForPosition(ctx, position);
- else {
- scroll = False;
- top = SrcScan(ctx->text.source, position, XawstEOL,
- XawsdLeft, 1, False);
- if (ctx->text.wrap != XawtextWrapNever) {
- last = top;
- while (last < position) {
- tmp = last;
- XawTextSinkFindPosition(ctx->text.sink, last,
- ctx->text.left_margin, wwidth,
- ctx->text.wrap == XawtextWrapWord,
- &last, &dim, &dim);
- if (last == tmp)
- ++last;
- if (last < position)
- top = last;
- }
- }
- }
- }
- else { /* VScroll Down */
- /*
- * Calculates the number of lines
- */
- while (top > position) {
- last = top;
- top = SrcScan(ctx->text.source, top, XawstEOL,
- XawsdLeft, 2, False);
- vlines -= CountLines(ctx, top, last);
- if (-vlines >= ctx->text.lt.lines) {
- scroll = False;
- top = SrcScan(ctx->text.source, position, XawstEOL,
- XawsdLeft, 1, False);
- break;
- }
- }
- /*
- * Normalize
- */
- if (ctx->text.wrap != XawtextWrapNever) {
- last = top;
- while (last < position) {
- tmp = last;
- XawTextSinkFindPosition(ctx->text.sink, last,
- ctx->text.left_margin,
- wwidth,
- ctx->text.wrap == XawtextWrapWord,
- &last, &dim, &dim);
- if (last == tmp)
- ++last;
- if (last < position)
- top = last;
- ++vlines;
- }
- }
- }
-
- if (vlines || !scroll) {
- _XawTextPrepareToUpdate(ctx);
- if (scroll)
- XawTextScroll(ctx, vlines, 0);
- else
- _BuildLineTable(ctx, top, 0);
- _XawTextExecuteUpdate(ctx);
- }
-}
-
-static Bool
-MatchSelection(Atom selection, XawTextSelection *s)
-{
- Atom *match;
- int count;
-
- for (count = 0, match = s->selections; count < s->atom_count;
- match++, count++)
- if (*match == selection)
- return (True);
-
- return (False);
-}
-
-static Boolean
-TextConvertSelection(Widget w, Atom *selection, Atom *target, Atom *type,
- XtPointer *value, unsigned long *length, int *format)
-{
- Display *d = XtDisplay(w);
- TextWidget ctx = (TextWidget)w;
- Widget src = ctx->text.source;
- XawTextEditType edit_mode;
- Arg args[1];
- XawTextSelectionSalt *salt = NULL;
- XawTextSelection *s;
-
- if (*target == XA_TARGETS(d)) {
- Atom *targetP, *std_targets;
- unsigned long std_length;
-
- if (SrcCvtSel(src, selection, target, type, value, length, format))
- return (True);
-
- XtSetArg(args[0], XtNeditType, &edit_mode);
- XtGetValues(src, args, ONE);
-
- XmuConvertStandardSelection(w, ctx->text.time, selection,
- target, type, (XPointer*)&std_targets,
- &std_length, format);
-
- *length = 7 + (edit_mode == XawtextEdit) + std_length;
- *value = XtMalloc((unsigned)sizeof(Atom)*(*length));
- targetP = *(Atom**)value;
- *targetP++ = XA_STRING;
- *targetP++ = XA_TEXT(d);
- *targetP++ = XA_UTF8_STRING(d);
- *targetP++ = XA_COMPOUND_TEXT(d);
- *targetP++ = XA_LENGTH(d);
- *targetP++ = XA_LIST_LENGTH(d);
- *targetP++ = XA_CHARACTER_POSITION(d);
- if (edit_mode == XawtextEdit) {
- *targetP++ = XA_DELETE(d);
- }
- (void)memmove((char*)targetP, (char*)std_targets,
- sizeof(Atom) * std_length);
- XtFree((char*)std_targets);
- *type = XA_ATOM;
- *format = 32;
- return (True);
- }
-
- if (SrcCvtSel(src, selection, target, type, value, length, format))
- return (True);
-
- if (MatchSelection(*selection, &ctx->text.s))
- s = &ctx->text.s;
- else {
- for (salt = ctx->text.salt; salt; salt = salt->next)
- if (MatchSelection(*selection, &salt->s))
- break;
- if (!salt)
- return (False);
- s = &salt->s;
- }
- if (*target == XA_STRING
- || *target == XA_TEXT(d)
- || *target == XA_UTF8_STRING(d)
- || *target == XA_COMPOUND_TEXT(d)) {
- if (*target == XA_TEXT(d)) {
- if (XawTextFormat(ctx, XawFmtWide))
- *type = XA_COMPOUND_TEXT(d);
- else
- *type = XA_STRING;
- }
- else
- *type = *target;
- /*
- * If salt is True, the salt->contents stores CT string,
- * its length is measured in bytes.
- * Refer to _XawTextSaltAwaySelection().
- *
- * by Li Yuhong, Mar. 20, 1991.
- */
- if (!salt) {
- *value = _XawTextGetSTRING(ctx, s->left, s->right);
- if (XawTextFormat(ctx, XawFmtWide)) {
- XTextProperty textprop;
- if (XwcTextListToTextProperty(d, (wchar_t **)value, 1,
- XCompoundTextStyle, &textprop)
- < Success) {
- XtFree((char *)*value);
- return (False);
- }
- XtFree((char *)*value);
- *value = (XtPointer)textprop.value;
- *length = textprop.nitems;
- }
- else
- *length = strlen((char *)*value);
- }
- else {
- *value = XtMalloc((salt->length + 1) * sizeof(unsigned char));
- strcpy ((char *)*value, salt->contents);
- *length = salt->length;
- }
- /* Got *value,*length, now in COMPOUND_TEXT format. */
- if (XawTextFormat(ctx, XawFmtWide) && *type == XA_STRING) {
- XTextProperty textprop;
- wchar_t **wlist;
- int count;
-
- textprop.encoding = XA_COMPOUND_TEXT(d);
- textprop.value = (unsigned char *)*value;
- textprop.nitems = strlen(*value);
- textprop.format = 8;
- if (XwcTextPropertyToTextList(d, &textprop, &wlist, &count)
- < Success
- || count < 1) {
- XtFree((char *)*value);
- return (False);
- }
- XtFree((char *)*value);
- if (XwcTextListToTextProperty(d, wlist, 1, XStringStyle, &textprop)
- < Success) {
- XwcFreeStringList((wchar_t**) wlist);
- return (False);
- }
- *value = (XtPointer)textprop.value;
- *length = textprop.nitems;
- XwcFreeStringList(wlist);
- } else if (*type == XA_UTF8_STRING(d)) {
- XTextProperty textprop;
- char **list;
- int count;
-
- textprop.encoding = XA_COMPOUND_TEXT(d);
- textprop.value = (unsigned char *)*value;
- textprop.nitems = strlen(*value);
- textprop.format = 8;
- if (Xutf8TextPropertyToTextList(d, &textprop, &list, &count)
- < Success
- || count < 1) {
- XtFree((char *)*value);
- return (False);
- }
- XtFree((char *)*value);
- *value = *list;
- *length = strlen(*list);
- XFree(list);
- }
- *format = 8;
- return (True);
- }
-
- if ((*target == XA_LIST_LENGTH(d)) || (*target == XA_LENGTH(d))) {
- long * temp;
-
- temp = (long *)XtMalloc((unsigned)sizeof(long));
- if (*target == XA_LIST_LENGTH(d))
- *temp = 1L;
- else /* *target == XA_LENGTH(d) */
- *temp = (long) (s->right - s->left);
-
- *value = (XPointer)temp;
- *type = XA_INTEGER;
- *length = 1L;
- *format = 32;
- return (True);
- }
-
- if (*target == XA_CHARACTER_POSITION(d)) {
- long * temp;
-
- temp = (long *)XtMalloc((unsigned)(2 * sizeof(long)));
- temp[0] = (long)(s->left + 1);
- temp[1] = s->right;
- *value = (XPointer)temp;
- *type = XA_SPAN(d);
- *length = 2L;
- *format = 32;
- return (True);
- }
-
- if (*target == XA_DELETE(d)) {
- if (!salt)
- _XawTextZapSelection(ctx, NULL, True);
- *value = NULL;
- *type = XA_NULL(d);
- *length = 0;
- *format = 32;
- return (True);
- }
-
- if (XmuConvertStandardSelection(w, ctx->text.time, selection, target, type,
- (XPointer *)value, length, format))
- return (True);
-
- /* else */
- return (False);
-}
-
-/*
- * Function:
- * GetCutBuffferNumber
- *
- * Parameters:
- * atom - atom to check
- *
- * Description:
- * Returns the number of the cut buffer.
- *
- * Returns:
- * The number of the cut buffer representing this atom or NOT_A_CUT_BUFFER
- */
-#define NOT_A_CUT_BUFFER -1
-static int
-GetCutBufferNumber(Atom atom)
-{
- if (atom == XA_CUT_BUFFER0) return (0);
- if (atom == XA_CUT_BUFFER1) return (1);
- if (atom == XA_CUT_BUFFER2) return (2);
- if (atom == XA_CUT_BUFFER3) return (3);
- if (atom == XA_CUT_BUFFER4) return (4);
- if (atom == XA_CUT_BUFFER5) return (5);
- if (atom == XA_CUT_BUFFER6) return (6);
- if (atom == XA_CUT_BUFFER7) return (7);
- return (NOT_A_CUT_BUFFER);
-}
-
-static void
-TextLoseSelection(Widget w, Atom *selection)
-{
- TextWidget ctx = (TextWidget)w;
- Atom *atomP;
- int i;
- XawTextSelectionSalt*salt, *prevSalt, *nextSalt;
-
- atomP = ctx->text.s.selections;
- for (i = 0 ; i < ctx->text.s.atom_count; i++, atomP++)
- if ((*selection == *atomP)
- || (GetCutBufferNumber(*atomP) != NOT_A_CUT_BUFFER))
- *atomP = (Atom)0;
-
- while (ctx->text.s.atom_count
- && ctx->text.s.selections[ctx->text.s.atom_count - 1] == 0)
- ctx->text.s.atom_count--;
-
- /*
- * Must walk the selection list in opposite order from UnsetSelection
- */
- atomP = ctx->text.s.selections;
- for (i = 0 ; i < ctx->text.s.atom_count; i++, atomP++)
- if (*atomP == (Atom)0) {
- *atomP = ctx->text.s.selections[--ctx->text.s.atom_count];
- while (ctx->text.s.atom_count
- && ctx->text.s.selections[ctx->text.s.atom_count-1] == 0)
- ctx->text.s.atom_count--;
- }
-
- if (ctx->text.s.atom_count == 0)
- ModifySelection(ctx, ctx->text.insertPos, ctx->text.insertPos);
-
- prevSalt = 0;
- for (salt = ctx->text.salt; salt; salt = nextSalt) {
- atomP = salt->s.selections;
- nextSalt = salt->next;
- for (i = 0 ; i < salt->s.atom_count; i++, atomP++)
- if (*selection == *atomP)
- *atomP = (Atom)0;
-
- while (salt->s.atom_count
- && salt->s.selections[salt->s.atom_count-1] == 0)
- salt->s.atom_count--;
-
- /*
- * Must walk the selection list in opposite order from UnsetSelection
- */
- atomP = salt->s.selections;
- for (i = 0 ; i < salt->s.atom_count; i++, atomP++)
- if (*atomP == (Atom)0) {
- *atomP = salt->s.selections[--salt->s.atom_count];
- while (salt->s.atom_count
- && salt->s.selections[salt->s.atom_count-1] == 0)
- salt->s.atom_count--;
- }
-
- if (salt->s.atom_count == 0) {
- XtFree ((char *) salt->s.selections);
- XtFree (salt->contents);
- if (prevSalt)
- prevSalt->next = nextSalt;
- else
- ctx->text.salt = nextSalt;
- XtFree((char *)salt);
- }
- else
- prevSalt = salt;
- }
-}
-
-void
-_XawTextSaltAwaySelection(TextWidget ctx, Atom *selections, int num_atoms)
-{
- XawTextSelectionSalt *salt;
- int i, j;
-
- for (i = 0; i < num_atoms; i++)
- TextLoseSelection((Widget)ctx, selections + i);
- if (num_atoms == 0)
- return;
- salt = (XawTextSelectionSalt *)
- XtMalloc((unsigned)sizeof(XawTextSelectionSalt));
- if (!salt)
- return;
- salt->s.selections = (Atom *)XtMalloc((unsigned)(num_atoms * sizeof(Atom)));
- if (!salt->s.selections) {
- XtFree((char *)salt);
- return;
- }
- salt->s.left = ctx->text.s.left;
- salt->s.right = ctx->text.s.right;
- salt->s.type = ctx->text.s.type;
- salt->contents = _XawTextGetSTRING(ctx, ctx->text.s.left, ctx->text.s.right);
- if (XawTextFormat(ctx, XawFmtWide)) {
- XTextProperty textprop;
- if (XwcTextListToTextProperty(XtDisplay((Widget)ctx),
- (wchar_t**)(&(salt->contents)), 1,
- XCompoundTextStyle,
- &textprop) < Success) {
- XtFree(salt->contents);
- salt->length = 0;
- return;
- }
- XtFree(salt->contents);
- salt->contents = (char *)textprop.value;
- salt->length = textprop.nitems;
- }
- else
- salt->length = strlen (salt->contents);
- salt->next = ctx->text.salt;
- ctx->text.salt = salt;
- j = 0;
- for (i = 0; i < num_atoms; i++) {
- if (GetCutBufferNumber (selections[i]) == NOT_A_CUT_BUFFER) {
- salt->s.selections[j++] = selections[i];
- XtOwnSelection((Widget)ctx, selections[i], ctx->text.time,
- TextConvertSelection, TextLoseSelection, NULL);
- }
- }
- salt->s.atom_count = j;
-}
-
-static void
-_SetSelection(TextWidget ctx, XawTextPosition left, XawTextPosition right,
- Atom *selections, Cardinal count)
-{
-#ifndef OLDXAW
- Cardinal i;
- XawTextPosition pos;
- TextSrcObject src = (TextSrcObject)ctx->text.source;
-
- for (i = 0; i < src->textSrc.num_text; i++) {
- TextWidget tw = (TextWidget)src->textSrc.text[i];
- Bool needs_updating = tw->text.old_insert < 0;
- Bool showposition = tw->text.showposition;
-
- if (needs_updating) {
- tw->text.showposition = False;
- _XawTextPrepareToUpdate(tw);
- }
-#else
- TextWidget tw = ctx;
- XawTextPosition pos;
-#endif /* OLDXAW */
-
- if (left < tw->text.s.left) {
- pos = Min(right, tw->text.s.left);
- _XawTextNeedsUpdating(tw, left, pos);
- }
- if (left > tw->text.s.left) {
- pos = Min(left, tw->text.s.right);
- _XawTextNeedsUpdating(tw, tw->text.s.left, pos);
- }
- if (right < tw->text.s.right) {
- pos = Max(right, tw->text.s.left);
- _XawTextNeedsUpdating(tw, pos, tw->text.s.right);
- }
- if (right > tw->text.s.right) {
- pos = Max(left, tw->text.s.right);
- _XawTextNeedsUpdating(tw, pos, right);
- }
-
- tw->text.s.left = left;
- tw->text.s.right = right;
-
-#ifndef OLDXAW
- if (needs_updating) {
- _XawTextExecuteUpdate(tw);
- tw->text.showposition = showposition;
- }
- }
-#endif /* OLDXAW */
-
- SrcSetSelection(ctx->text.source, left, right,
- (count == 0) ? None : selections[0]);
-
- if (left < right) {
- Widget w = (Widget)ctx;
- int buffer;
-
- while (count) {
- Atom selection = selections[--count];
-
- /*
- * If this is a cut buffer
- */
- if ((buffer = GetCutBufferNumber(selection)) != NOT_A_CUT_BUFFER) {
- unsigned char *ptr, *tptr;
- unsigned int amount, max_len = MAX_CUT_LEN(XtDisplay(w));
- unsigned long len;
-
- tptr= ptr= (unsigned char *)_XawTextGetSTRING(ctx,
- ctx->text.s.left,
- ctx->text.s.right);
- if (XawTextFormat(ctx, XawFmtWide)) {
- /*
- * Only XA_STRING(Latin 1) is allowed in CUT_BUFFER,
- * so we get it from wchar string, then free the wchar string
- */
- XTextProperty textprop;
-
- if (XwcTextListToTextProperty(XtDisplay(w), (wchar_t**)&ptr,
- 1, XStringStyle, &textprop)
- < Success){
- XtFree((char *)ptr);
- return;
- }
- XtFree((char *)ptr);
- tptr = ptr = textprop.value;
- }
- if (buffer == 0) {
- _CreateCutBuffers(XtDisplay(w));
- XRotateBuffers(XtDisplay(w), 1);
- }
- amount = Min ((len = strlen((char *)ptr)), max_len);
- XChangeProperty(XtDisplay(w), RootWindow(XtDisplay(w), 0),
- selection, XA_STRING, 8, PropModeReplace,
- ptr, amount);
-
- while (len > max_len) {
- len -= max_len;
- tptr += max_len;
- amount = Min (len, max_len);
- XChangeProperty(XtDisplay(w), RootWindow(XtDisplay(w), 0),
- selection, XA_STRING, 8, PropModeAppend,
- tptr, amount);
- }
- XtFree ((char *)ptr);
- }
- else /* This is a real selection */
- XtOwnSelection(w, selection, ctx->text.time, TextConvertSelection,
- TextLoseSelection, NULL);
- }
- }
- else
- XawTextUnsetSelection((Widget)ctx);
-}
-
-#ifndef OLDXAW
-void
-_XawTextSetLineAndColumnNumber(TextWidget ctx, Bool force)
-{
- int line_number, column_number;
-
- if (ctx->text.old_insert != ctx->text.insertPos &&
- ctx->text.lt.base_line < 0) {
- ctx->text.lt.base_line = 0;
- (void)_BuildLineTable(ctx, ctx->text.lt.top, 0);
- }
-
- line_number = ResolveLineNumber(ctx);
- column_number = ResolveColumnNumber(ctx);
-
- if (force || (ctx->text.column_number != column_number
- || ctx->text.line_number != line_number)) {
- XawTextPositionInfo info;
-
- ctx->text.line_number = info.line_number = line_number;
- ctx->text.column_number = info.column_number = column_number;
- info.insert_position = ctx->text.insertPos;
- info.last_position = ctx->text.lastPos;
- info.overwrite_mode = ctx->text.overwrite;
-
- XtCallCallbacks((Widget)ctx, XtNpositionCallback, (XtPointer)&info);
- }
-}
-
-static int
-ResolveColumnNumber(TextWidget ctx)
-{
- Widget src = ctx->text.source;
- short column_number = 0;
- XawTextPosition position;
- XawTextBlock block;
- unsigned long format = _XawTextFormat(ctx);
- TextSinkObject sink = (TextSinkObject)ctx->text.sink;
- short *char_tabs = sink->text_sink.char_tabs;
- int tab_count = sink->text_sink.tab_count;
- int tab_index = 0, tab_column = 0, tab_base = 0;
-
- if (ctx->text.lt.base_line < 1)
- return (ctx->text.column_number);
-
- position = SrcScan(src, ctx->text.insertPos, XawstEOL, XawsdLeft, 1, False);
- XawTextSourceRead(src, position, &block, ctx->text.insertPos - position);
-
- for (; position < ctx->text.insertPos; position++) {
- if (position - block.firstPos >= block.length)
- XawTextSourceRead(src, position, &block, ctx->text.insertPos - position);
- if ((format == XawFmt8Bit && block.ptr[position - block.firstPos] == '\t') ||
- (format == XawFmtWide && ((wchar_t*)block.ptr)[position - block.firstPos] == _Xaw_atowc(XawTAB))) {
- while (tab_base + tab_column <= column_number) {
- if (tab_count) {
- for (; tab_index < tab_count; ++tab_index)
- if (tab_base + char_tabs[tab_index] > column_number) {
- tab_column = char_tabs[tab_index];
- break;
- }
- if (tab_index >= tab_count) {
- tab_base += char_tabs[tab_count - 1];
- tab_column = tab_index = 0;
- }
- }
- else
- tab_column += DEFAULT_TAB_SIZE;
- }
- column_number = tab_base + tab_column;
- }
- else
- ++column_number;
- if (column_number >= 16384) {
- column_number = 16383;
- break;
- }
- }
-
- return (column_number);
-}
-#endif /* OLDXAW */
-
-void
-_XawTextSourceChanged(Widget w, XawTextPosition left, XawTextPosition right,
- XawTextBlock *block, int lines)
-{
- TextWidget ctx = (TextWidget)w;
- Widget src = ctx->text.source;
- XawTextPosition update_from, update_to, top;
- Boolean update_disabled;
- int delta, line, line_from;
-
- if (left < ctx->text.old_insert) {
- XawTextPosition old_insert = ctx->text.old_insert;
-
- if (right < ctx->text.old_insert)
- old_insert -= right - left;
- else
- old_insert = left;
-
- ctx->text.insertPos = old_insert + block->length;
- }
-#ifndef OLDXAW
- if (left <= ctx->text.lt.top) {
- if (left + block->length - (right - left) < ctx->text.lt.top) {
- ctx->text.source_changed = SRC_CHANGE_BEFORE;
- ctx->text.lt.base_line += lines;
- }
- else
- ctx->text.source_changed = SRC_CHANGE_OVERLAP;
- }
- else
- ctx->text.source_changed = SRC_CHANGE_AFTER;
-#endif
-
- update_from = left;
- update_to = left + block->length;
- update_to = SrcScan(src, update_to, XawstEOL, XawsdRight, 1, False);
- delta = block->length - (right - left);
- if (delta < 0)
- ctx->text.clear_to_eol = True;
- if (update_to == update_from)
- ++update_to;
- update_disabled = ctx->text.update_disabled;
- ctx->text.update_disabled = True;
- ctx->text.lastPos = XawTextGetLastPosition(ctx);
- top = ctx->text.lt.info[0].position;
-
- XawTextUnsetSelection((Widget)ctx);
-
- if (delta) {
- int i;
- XmuSegment *seg;
-
- for (seg = ctx->text.update->segment; seg; seg = seg->next) {
- if (seg->x1 > (int)left)
- break;
- else if (seg->x2 > (int)left) {
- seg->x2 += delta;
- seg = seg->next;
- break;
- }
- }
- for (; seg; seg = seg->next) {
- seg->x1 += delta;
- seg->x2 += delta;
- }
- XmuOptimizeScanline(ctx->text.update);
-
- for (i = 0; i <= ctx->text.lt.lines; i++)
- if (ctx->text.lt.info[i].position > left)
- break;
- for (; i <= ctx->text.lt.lines; i++)
- ctx->text.lt.info[i].position += delta;
- }
-
- if (top != ctx->text.lt.info[0].position) {
- line_from = line = 0;
- ctx->text.lt.top = top = SrcScan(src, ctx->text.lt.info[0].position,
- XawstEOL, XawsdLeft, 1, False);
- update_from = top;
- }
- else {
- line_from = line = LineForPosition(ctx, update_from + delta);
- top = ctx->text.lt.info[line].position;
- }
-
- if (line > 0 && ctx->text.wrap == XawtextWrapWord) {
- --line;
- top = ctx->text.lt.info[line].position;
- }
-
- (void)_BuildLineTable(ctx, top, line);
-
- if (ctx->text.wrap == XawtextWrapWord) {
- if (line_from != LineForPosition(ctx, update_from)
- || line_from != LineForPosition(ctx, update_to)) {
- ctx->text.clear_to_eol = True;
- update_from = SrcScan(src, update_from,
- XawstWhiteSpace, XawsdLeft, 1, True);
- if (update_to >= ctx->text.lastPos)
- /* this is not an error, it just tells _BuildLineTable to
- * clear to the bottom of the window. The value of update_to
- * should not be > ctx->text.lastPos.
- */
- ++update_to;
- }
- }
- else if (!ctx->text.clear_to_eol) {
- if (LineForPosition(ctx, update_from)
- != LineForPosition(ctx, update_to))
- ctx->text.clear_to_eol = True;
- }
-
- _XawTextNeedsUpdating(ctx, update_from, update_to);
- ctx->text.update_disabled = update_disabled;
-}
-
-/*
- * Function:
- * _XawTextReplace
- *
- * Parameters:
- * ctx - text widget
- * left - left offset
- * right - right offset
- * block - text block
- *
- * Description:
- * Replaces the text between left and right by the text in block.
- * Does all the required calculations of offsets, and rebuild the
- * the line table, from the insertion point (or previous line, if
- * wrap mode is 'word').
- *
- * Returns:
- * XawEditDone - success
- * any other value - error code
- */
-int
-_XawTextReplace(TextWidget ctx, XawTextPosition left, XawTextPosition right,
- XawTextBlock *block)
-{
- Arg args[1];
- Widget src;
- XawTextEditType edit_mode;
-
- if (left == right && block->length == 0)
- return (XawEditDone);
-
- src = ctx->text.source;
- XtSetArg(args[0], XtNeditType, &edit_mode);
- XtGetValues(src, args, 1);
-
- if (edit_mode == XawtextAppend) {
- if (block->length == 0)
- return (XawEditError);
- ctx->text.insertPos = ctx->text.lastPos;
- }
-
-#ifndef OLDXAW
- return (SrcReplace(src, left, right, block));
-#else
- if (SrcReplace(src, left, right, block) == XawEditDone) {
- _XawTextSourceChanged((Widget)ctx, left, right, block, 0);
-
- return (XawEditDone);
- }
-
- return (XawEditError);
-#endif
-}
-
-/*
- * This routine will display text between two arbitrary source positions.
- * In the event that this span contains highlighted text for the selection,
- * only that portion will be displayed highlighted.
- */
-static void
-OldDisplayText(Widget w, XawTextPosition left, XawTextPosition right)
-{
- static XmuSegment segment;
- static XmuScanline next;
- static XmuScanline scanline = {0, &segment, &next};
- static XmuArea area = {&scanline};
-
- TextWidget ctx = (TextWidget)w;
- int x, y, line;
- XawTextPosition start, end, last, final;
- XmuScanline *scan;
- XmuSegment *seg;
- XmuArea *clip = NULL;
- Bool cleol = ctx->text.clear_to_eol;
- Bool has_selection = ctx->text.s.right > ctx->text.s.left;
-
- left = left < ctx->text.lt.top ? ctx->text.lt.top : left;
-
- if (left > right || !LineAndXYForPosition(ctx, left, &line, &x, &y))
- return;
-
- last = XawTextGetLastPosition(ctx);
- segment.x2 = (int)XtWidth(ctx) - ctx->text.r_margin.right;
-
- if (cleol)
- clip = XmuCreateArea();
-
- for (start = left; start < right && line < ctx->text.lt.lines; line++) {
- if ((end = ctx->text.lt.info[line + 1].position) > right)
- end = right;
-
- final = end;
- if (end > last)
- end = last;
-
- if (end > start) {
- if (!has_selection
- || (start >= ctx->text.s.right || end <= ctx->text.s.left))
- _XawTextSinkDisplayText(ctx->text.sink, x, y, start, end, False);
- else if (start >= ctx->text.s.left && end <= ctx->text.s.right)
- _XawTextSinkDisplayText(ctx->text.sink, x, y, start, end, True);
- else {
- OldDisplayText(w, start, ctx->text.s.left);
- OldDisplayText(w, Max(start, ctx->text.s.left),
- Min(end, ctx->text.s.right));
- OldDisplayText(w, ctx->text.s.right, end);
- }
- }
-
- x = ctx->text.left_margin;
- if (cleol) {
- segment.x1 = ctx->text.lt.info[line].textWidth + x;
- if (XmuValidSegment(&segment)) {
- scanline.y = y;
- next.y = ctx->text.lt.info[line + 1].y;
- XmuAreaOr(clip, &area);
- }
- }
-
- start = final;
- y = ctx->text.lt.info[line + 1].y;
- }
-
- if (cleol) {
- for (scan = clip->scanline; scan && scan->next; scan = scan->next)
- for (seg = scan->segment; seg; seg = seg->next)
- SinkClearToBG(ctx->text.sink,
- seg->x1, scan->y,
- seg->x2 - seg->x1, scan->next->y - scan->y);
- XmuDestroyArea(clip);
- }
-}
-
-#ifndef OLDXAW
-/*ARGSUSED*/
-static void
-DisplayText(Widget w, XawTextPosition left, XawTextPosition right)
-{
- static XmuSegment segment;
- static XmuScanline next;
- static XmuScanline scanline = {0, &segment, &next};
- static XmuArea area = {&scanline};
-
- TextWidget ctx = (TextWidget)w;
- int y, line;
- XawTextPosition from, to, lastPos;
- Bool cleol = ctx->text.clear_to_eol;
- Bool has_selection = ctx->text.s.right > ctx->text.s.left;
- XawTextPaintList *paint_list;
-
- left = left < ctx->text.lt.top ? ctx->text.lt.top : left;
-
- if (left > right || !IsPositionVisible(ctx, left))
- return;
-
- line = LineForPosition(ctx, left);
- y = ctx->text.lt.info[line].y;
- segment.x2 = (int)XtWidth(ctx) - ctx->text.r_margin.right;
- lastPos = XawTextGetLastPosition(ctx);
-
- paint_list = ((TextSinkObject)ctx->text.sink)->text_sink.paint;
-
- for (from = left; from < right && line < ctx->text.lt.lines; line++) {
- if ((to = ctx->text.lt.info[line + 1].position) > right)
- to = right;
-
- if (to > lastPos)
- to = lastPos;
-
- if (from < to) {
- if (!has_selection
- || (from >= ctx->text.s.right || to <= ctx->text.s.left))
- XawTextSinkPreparePaint(ctx->text.sink, y, line, from, to, False);
- else if (from >= ctx->text.s.left && to <= ctx->text.s.right)
- XawTextSinkPreparePaint(ctx->text.sink, y, line, from, to, True);
- else {
- XawTextSinkPreparePaint(ctx->text.sink, y, line, from,
- ctx->text.s.left, False);
- XawTextSinkPreparePaint(ctx->text.sink, y, line,
- XawMax(from, ctx->text.s.left),
- XawMin(to, ctx->text.s.right), True);
- XawTextSinkPreparePaint(ctx->text.sink, y, line,
- ctx->text.s.right, to, False);
- }
- }
-
- if (cleol) {
- segment.x1 = ctx->text.lt.info[line].textWidth + ctx->text.left_margin;
- if (XmuValidSegment(&segment)) {
- scanline.y = y;
- next.y = ctx->text.lt.info[line + 1].y;
- XmuAreaOr(paint_list->clip, &area);
- }
- }
- y = ctx->text.lt.info[line + 1].y;
- from = to;
- }
-
- /* clear to the bottom of the window */
- if (cleol && line >= ctx->text.lt.lines) {
- segment.x1 = ctx->text.left_margin;
- if (XmuValidSegment(&segment)) {
- scanline.y = y;
- next.y = (int)XtHeight(ctx) - (int)ctx->text.margin.bottom;
- XmuAreaOr(paint_list->clip, &area);
- }
- }
-}
-#endif
-
-/*
- * This routine implements multi-click selection in a hardwired manner.
- * It supports multi-click entity cycling (char, word, line, file) and mouse
- * motion adjustment of the selected entitie (i.e. select a word then, with
- * button still down, adjust wich word you really meant by moving the mouse).
- * [NOTE: This routine is to be replaced by a set of procedures that
- * will allows clients to implements a wide class of draw through and
- * multi-click selection user interfaces.]
- */
-static void
-DoSelection(TextWidget ctx, XawTextPosition pos, Time time, Bool motion)
-{
- XawTextPosition newLeft, newRight;
- XawTextSelectType newType, *sarray;
- Widget src = ctx->text.source;
-
- if (motion)
- newType = ctx->text.s.type;
- else {
- if ((abs((long) time - (long) ctx->text.lasttime) < MULTI_CLICK_TIME)
- && (pos >= ctx->text.s.left && pos <= ctx->text.s.right)) {
- sarray = ctx->text.sarray;
- for (; *sarray != XawselectNull && *sarray != ctx->text.s.type;
- sarray++)
- ;
- if (*sarray == XawselectNull)
- newType = *(ctx->text.sarray);
- else {
- newType = *(sarray + 1);
- if (newType == XawselectNull)
- newType = *(ctx->text.sarray);
- }
- }
- else /* single-click event */
- newType = *(ctx->text.sarray);
-
- ctx->text.lasttime = time;
- }
- switch (newType) {
- case XawselectPosition:
- newLeft = newRight = pos;
- break;
- case XawselectChar:
- newLeft = pos;
- newRight = SrcScan(src, pos, XawstPositions, XawsdRight, 1, False);
- break;
- case XawselectWord:
- case XawselectParagraph:
- case XawselectAlphaNumeric: {
- XawTextScanType stype;
-
- if (newType == XawselectWord)
- stype = XawstWhiteSpace;
- else if (newType == XawselectParagraph)
- stype = XawstParagraph;
- else
- stype = XawstAlphaNumeric;
-
- /*
- * Somewhat complicated, but basically I treat the space between
- * two objects as another object. The object that I am currently
- * in then becomes the end of the selection.
- *
- * Chris Peterson - 4/19/90.
- */
- newRight = SrcScan(ctx->text.source, pos, stype,
- XawsdRight, 1, False);
- newRight = SrcScan(ctx->text.source, newRight, stype,
- XawsdLeft, 1, False);
-
- if (pos != newRight)
- newLeft = SrcScan(ctx->text.source, pos, stype,
- XawsdLeft, 1, False);
- else
- newLeft = pos;
-
- newLeft =SrcScan(ctx->text.source, newLeft, stype,
- XawsdRight, 1, False);
-
- if (newLeft > newRight) {
- XawTextPosition temp = newLeft;
- newLeft = newRight;
- newRight = temp;
- }
- } break;
- case XawselectLine:
- newLeft = SrcScan(src, pos, XawstEOL, XawsdLeft, 1, False);
- newRight = SrcScan(src, pos, XawstEOL, XawsdRight, 1, False);
- break;
- case XawselectAll:
- newLeft = SrcScan(src, pos, XawstAll, XawsdLeft, 1, False);
- newRight = SrcScan(src, pos, XawstAll, XawsdRight, 1, False);
- break;
- default:
- XtAppWarning(XtWidgetToApplicationContext((Widget) ctx),
- "Text Widget: empty selection array.");
- return;
- }
-
- if (newLeft != ctx->text.s.left || newRight != ctx->text.s.right
- || newType != ctx->text.s.type) {
- ModifySelection(ctx, newLeft, newRight);
- if (pos - ctx->text.s.left < ctx->text.s.right - pos)
- ctx->text.insertPos = newLeft;
- else
- ctx->text.insertPos = newRight;
- ctx->text.s.type = newType;
- }
- if (!motion) { /* setup so we can freely mix select extend calls*/
- ctx->text.origSel.type = ctx->text.s.type;
- ctx->text.origSel.left = ctx->text.s.left;
- ctx->text.origSel.right = ctx->text.s.right;
-
- if (pos >= ctx->text.s.left + (ctx->text.s.right - ctx->text.s.left) / 2)
- ctx->text.extendDir = XawsdRight;
- else
- ctx->text.extendDir = XawsdLeft;
- }
-}
-
-/*
- * This routine implements extension of the currently selected text in
- * the "current" mode (i.e. char word, line, etc.). It worries about
- * extending from either end of the selection and handles the case when you
- * cross through the "center" of the current selection (e.g. switch which
- * end you are extending!).
- */
-static void
-ExtendSelection(TextWidget ctx, XawTextPosition pos, Bool motion)
-{
- XawTextScanDirection dir;
-
- if (!motion) { /* setup for extending selection */
- if (ctx->text.s.left == ctx->text.s.right) /* no current selection. */
- ctx->text.s.left = ctx->text.s.right = ctx->text.insertPos;
- else {
- ctx->text.origSel.left = ctx->text.s.left;
- ctx->text.origSel.right = ctx->text.s.right;
- }
-
- ctx->text.origSel.type = ctx->text.s.type;
-
- if (pos >= ctx->text.s.left + (ctx->text.s.right - ctx->text.s.left) / 2)
- ctx->text.extendDir = XawsdRight;
- else
- ctx->text.extendDir = XawsdLeft;
- }
- else /* check for change in extend direction */
- if ((ctx->text.extendDir == XawsdRight &&
- pos <= ctx->text.origSel.left) ||
- (ctx->text.extendDir == XawsdLeft &&
- pos >= ctx->text.origSel.right)) {
- ctx->text.extendDir = (ctx->text.extendDir == XawsdRight) ?
- XawsdLeft : XawsdRight;
- ModifySelection(ctx, ctx->text.origSel.left, ctx->text.origSel.right);
- }
-
- dir = ctx->text.extendDir;
- switch (ctx->text.s.type) {
- case XawselectWord:
- case XawselectParagraph:
- case XawselectAlphaNumeric: {
- XawTextPosition left_pos, right_pos;
- XawTextScanType stype;
-
- if (ctx->text.s.type == XawselectWord)
- stype = XawstWhiteSpace;
- else if (ctx->text.s.type == XawselectParagraph)
- stype = XawstParagraph;
- else
- stype = XawstAlphaNumeric;
-
- /*
- * Somewhat complicated, but basically I treat the space between
- * two objects as another object. The object that I am currently
- * in then becomes the end of the selection.
- *
- * Chris Peterson - 4/19/90.
- */
- right_pos = SrcScan(ctx->text.source, pos, stype,
- XawsdRight, 1, False);
- right_pos =SrcScan(ctx->text.source, right_pos, stype,
- XawsdLeft, 1, False);
-
- if (pos != right_pos)
- left_pos = SrcScan(ctx->text.source, pos, stype,
- XawsdLeft, 1, False);
- else
- left_pos = pos;
-
- left_pos =SrcScan(ctx->text.source, left_pos, stype,
- XawsdRight, 1, False);
-
- if (dir == XawsdLeft)
- pos = Min(left_pos, right_pos);
- else /* dir == XawsdRight */
- pos = Max(left_pos, right_pos);
- } break;
- case XawselectLine:
- pos = SrcScan(ctx->text.source, pos, XawstEOL,
- dir, 1, dir == XawsdRight);
- break;
- case XawselectAll:
- pos = ctx->text.insertPos;
- /*FALLTHROUGH*/
- case XawselectPosition:
- default:
- break;
- }
-
- if (dir == XawsdRight)
- ModifySelection(ctx, ctx->text.s.left, pos);
- else
- ModifySelection(ctx, pos, ctx->text.s.right);
-
- ctx->text.insertPos = pos;
-}
-
-/*
- * Function:
- * _XawTextClearAndCenterDisplay
- *
- * Parameters:
- * ctx - text widget
- *
- * Description:
- * Redraws the display with the cursor in insert point
- * centered vertically.
- */
-void
-_XawTextClearAndCenterDisplay(TextWidget ctx)
-{
- int left_margin = ctx->text.left_margin;
- Bool visible = IsPositionVisible(ctx, ctx->text.insertPos);
-
- _XawTextShowPosition(ctx);
-
- if (XtIsRealized((Widget)ctx) && visible &&
- left_margin == ctx->text.left_margin) {
- int insert_line = LineForPosition(ctx, ctx->text.insertPos);
- int scroll_by = insert_line - (ctx->text.lt.lines >> 1);
- Boolean clear_to_eol = ctx->text.clear_to_eol;
-
- XawTextScroll(ctx, scroll_by, 0);
- SinkClearToBG(ctx->text.sink, 0, 0, XtWidth(ctx), XtHeight(ctx));
- ClearWindow(ctx);
- clear_to_eol = ctx->text.clear_to_eol;
- ctx->text.clear_to_eol = False;
- FlushUpdate(ctx);
- ctx->text.clear_to_eol = clear_to_eol;
- }
-}
-
-/*
- * Internal redisplay entire window
- * Legal to call only if widget is realized
- */
-static void
-DisplayTextWindow(Widget w)
-{
- TextWidget ctx = (TextWidget)w;
-
- _XawTextBuildLineTable(ctx, ctx->text.lt.top, False);
- ClearWindow(ctx);
-}
-
-static void
-TextSinkResize(Widget w)
-{
- if (w && XtClass(w)->core_class.resize)
- XtClass(w)->core_class.resize(w);
-}
-
-/* ARGSUSED */
-void
-_XawTextCheckResize(TextWidget ctx)
-{
- return;
-}
-
-/*
- * Converts (params, num_params) to a list of atoms & caches the
- * list in the TextWidget instance.
- */
-Atom *
-_XawTextSelectionList(TextWidget ctx, String *list, Cardinal nelems)
-{
- Atom *sel = ctx->text.s.selections;
- Display *dpy = XtDisplay((Widget)ctx);
- int n;
-
- if (nelems > (Cardinal)ctx->text.s.array_size) {
- sel = (Atom *)XtRealloc((char *)sel, sizeof(Atom) * nelems);
- ctx->text.s.array_size = nelems;
- ctx->text.s.selections = sel;
- }
- for (n = nelems; --n >= 0; sel++, list++)
- *sel = XInternAtom(dpy, *list, False);
- ctx->text.s.atom_count = nelems;
-
- return (ctx->text.s.selections);
-}
-
-/*
- * Function:
- * SetSelection
- *
- * Parameters:
- * ctx - text widget
- * defaultSel - default selection
- * l - left and right ends of the selection
- * r - ""
- * list - the selection list (as strings).
- * nelems - ""
- *
- * Description:
- * Sets the current selection.
- *
- * Note:
- * if (ctx->text.s.left >= ctx->text.s.right) then the selection is unset
- */
-void
-_XawTextSetSelection(TextWidget ctx, XawTextPosition l, XawTextPosition r,
- String *list, Cardinal nelems)
-{
- if (nelems == 1 && !strcmp (list[0], "none"))
- return;
- if (nelems == 0) {
- String defaultSel = "PRIMARY";
- list = &defaultSel;
- nelems = 1;
- }
- _SetSelection(ctx, l, r, _XawTextSelectionList(ctx, list, nelems), nelems);
-}
-
-/*
- * Function:
- * ModifySelection
- *
- * Parameters:
- * ctx - text widget
- * left - left and right ends of the selection
- * right - ""
- *
- * Description:
- * Modifies the current selection.
- *
- * Note:
- * if (ctx->text.s.left >= ctx->text.s.right) then the selection is unset
- */
-static void
-ModifySelection(TextWidget ctx, XawTextPosition left, XawTextPosition right)
-{
- if (left == right)
- ctx->text.insertPos = left;
- _SetSelection(ctx, left, right, NULL, 0);
-}
-
-/*
- * This routine is used to perform various selection functions. The goal is
- * to be able to specify all the more popular forms of draw-through and
- * multi-click selection user interfaces from the outside.
- */
-void
-_XawTextAlterSelection(TextWidget ctx, XawTextSelectionMode mode,
- XawTextSelectionAction action, String *params,
- Cardinal *num_params)
-{
- XawTextPosition position;
- Boolean flag;
-
- /*
- * This flag is used by TextPop.c:DoReplace() to determine if the selection
- * is okay to use, or if it has been modified.
- */
- if (ctx->text.search != NULL)
- ctx->text.search->selection_changed = True;
-
- position = PositionForXY(ctx, (int) ctx->text.ev_x, (int) ctx->text.ev_y);
-
- flag = (action != XawactionStart);
- if (mode == XawsmTextSelect)
- DoSelection(ctx, position, ctx->text.time, flag);
- else /* mode == XawsmTextExtend */
- ExtendSelection (ctx, position, flag);
-
- if (action == XawactionEnd)
- _XawTextSetSelection(ctx, ctx->text.s.left, ctx->text.s.right,
- params, *num_params);
-}
-
-/*
- * Function:
- * UpdateTextInRectangle
- *
- * Parameters:
- * ctx - the text widget
- * rect - rectangle
- *
- * Description:
- * Updates the text in the given rectangle
- */
-static void
-UpdateTextInRectangle(TextWidget ctx, XRectangle *rect)
-{
- XawTextLineTable *lt;
- int line, y1, y2, x2;
-
- y1 = rect->y;
- y2 = y1 + rect->height;
- x2 = rect->x + rect->width;
-
- for (line = 0, lt = &ctx->text.lt; line < lt->lines; line++)
- if (lt->info[line + 1].y > y1)
- break;
- for (; line <= lt->lines; line++) {
- if (lt->info[line].y > y2)
- break;
- UpdateTextInLine(ctx, line, rect->x, x2);
- }
-}
-
-/*
- * This routine processes all "expose region" XEvents. In general, its job
- * is to the best job at minimal re-paint of the text, displayed in the
- * window, that it can.
- */
-/* ARGSUSED */
-static void
-XawTextExpose(Widget w, XEvent *event, Region region)
-{
- TextWidget ctx = (TextWidget)w;
- Boolean clear_to_eol;
- XRectangle expose;
-
- if (event->type == Expose) {
- expose.x = event->xexpose.x;
- expose.y = event->xexpose.y;
- expose.width = event->xexpose.width;
- expose.height = event->xexpose.height;
- }
- else if (event->type == GraphicsExpose) {
- expose.x = event->xgraphicsexpose.x;
- expose.y = event->xgraphicsexpose.y;
- expose.width = event->xgraphicsexpose.width;
- expose.height = event->xgraphicsexpose.height;
- }
- else
- return;
-
- _XawTextPrepareToUpdate(ctx);
-
- if (Superclass->core_class.expose)
- (*Superclass->core_class.expose)(w, event, region);
-
- clear_to_eol = ctx->text.clear_to_eol;
- ctx->text.clear_to_eol = False;
-
- UpdateTextInRectangle(ctx, &expose);
- XawTextSinkGetCursorBounds(ctx->text.sink, &expose);
- UpdateTextInRectangle(ctx, &expose);
- SinkClearToBG(ctx->text.sink, expose.x, expose.y,
- expose.width, expose.height);
- _XawTextExecuteUpdate(ctx);
- ctx->text.clear_to_eol = clear_to_eol;
-}
-
-/*
- * This routine does all setup required to syncronize batched screen updates
- */
-void
-_XawTextPrepareToUpdate(TextWidget ctx)
-{
- if (ctx->text.old_insert < 0) {
- InsertCursor((Widget)ctx, XawisOff);
- ctx->text.showposition = False;
- ctx->text.old_insert = ctx->text.insertPos;
- ctx->text.clear_to_eol = False;
-#ifndef OLDXAW
- ctx->text.source_changed = SRC_CHANGE_NONE;
-#endif
- }
-}
-
-/*
- * This is a private utility routine used by _XawTextExecuteUpdate. It
- * processes all the outstanding update requests and merges update
- * ranges where possible.
- */
-static void
-FlushUpdate(TextWidget ctx)
-{
- XmuSegment *seg;
- void (*display_text)(Widget, XawTextPosition, XawTextPosition);
-
- if (XtIsRealized((Widget)ctx)) {
- ctx->text.s.right = XawMin(ctx->text.s.right, ctx->text.lastPos);
- ctx->text.s.left = XawMin(ctx->text.s.left, ctx->text.s.right);
-
-#ifndef OLDXAW
- if (XawTextSinkBeginPaint(ctx->text.sink) == False)
-#endif
- display_text = OldDisplayText;
-#ifndef OLDXAW
- else
- display_text = DisplayText;
-#endif
- for (seg = ctx->text.update->segment; seg; seg = seg->next)
- (*display_text)((Widget)ctx,
- (XawTextPosition)seg->x1,
- (XawTextPosition)seg->x2);
-#ifndef OLDXAW
- if (display_text != OldDisplayText) {
- XawTextSinkDoPaint(ctx->text.sink);
- XawTextSinkEndPaint(ctx->text.sink);
- }
-#endif
- }
- (void)XmuScanlineXor(ctx->text.update, ctx->text.update);
-}
-
-static int
-CountLines(TextWidget ctx, XawTextPosition left, XawTextPosition right)
-{
- if (ctx->text.wrap == XawtextWrapNever || left >= right)
- return (1);
- else {
- XawTextPosition tmp;
- int dim, lines = 0, wwidth = GetMaxTextWidth(ctx);
-
- while (left < right) {
- tmp = left;
- XawTextSinkFindPosition(ctx->text.sink, left,
- ctx->text.left_margin,
- wwidth, ctx->text.wrap == XawtextWrapWord,
- &left, &dim, &dim);
- ++lines;
- if (tmp == left)
- ++left;
- }
-
- return (lines);
- }
- /*NOTREACHED*/
-}
-
-static int
-GetMaxTextWidth(TextWidget ctx)
-{
- XRectangle cursor;
- int width;
-
- XawTextSinkGetCursorBounds(ctx->text.sink, &cursor);
- width = (int)XtWidth(ctx) - RHMargins(ctx) - cursor.width;
-
- return (XawMax(0, width));
-}
-
-/*
- * Function:
- * _XawTextShowPosition
- *
- * Parameters:
- * ctx - the text widget to show the position
- *
- * Description:
- * Makes sure the text cursor visible, scrolling the text window
- * if required.
- */
-void
-_XawTextShowPosition(TextWidget ctx)
-{
- /*
- * Variable scroll is used to avoid scanning large files to calculate
- * line offsets
- */
- int hpixels, vlines;
- XawTextPosition first, last, top, tmp;
- Bool visible, scroll;
-
- if (!XtIsRealized((Widget)ctx))
- return;
-
- /*
- * Checks if a horizontal scroll is required
- */
- if (ctx->text.wrap == XawtextWrapNever) {
- int x, vwidth, distance, dim;
- XRectangle rect;
-
- vwidth = (int)XtWidth(ctx) - RHMargins(ctx);
- last = SrcScan(ctx->text.source, ctx->text.insertPos,
- XawstEOL, XawsdLeft, 1, False);
- XawTextSinkFindDistance(ctx->text.sink, last,
- ctx->text.left_margin,
- ctx->text.insertPos,
- &distance, &first, &dim);
- XawTextSinkGetCursorBounds(ctx->text.sink, &rect);
- x = ctx->text.left_margin - ctx->text.r_margin.left;
-
- if (x + distance + rect.width > vwidth)
- hpixels = x + distance + rect.width - vwidth + (vwidth >> 2);
- else if (x + distance < 0)
- hpixels = x + distance - (vwidth >> 2);
- else
- hpixels = 0;
- }
- else
- hpixels = 0;
-
- visible = IsPositionVisible(ctx, ctx->text.insertPos);
-
- /*
- * If the cursor is already visible
- */
- if (!hpixels && visible)
- return;
-
- scroll = ctx->core.background_pixmap == XtUnspecifiedPixmap && !hpixels;
- vlines = 0;
- first = ctx->text.lt.top;
-
- /*
- * Needs to scroll the text window
- */
- if (visible)
- top = ctx->text.lt.top;
- else {
- top = SrcScan(ctx->text.source, ctx->text.insertPos,
- XawstEOL, XawsdLeft, 1, False);
-
- /*
- * Finds the nearest left position from ctx->text.insertPos
- */
- if (ctx->text.wrap != XawtextWrapNever) {
- int dim, vwidth = GetMaxTextWidth(ctx);
-
- last = top;
- /*CONSTCOND*/
- while (1) {
- tmp = last;
- XawTextSinkFindPosition(ctx->text.sink, last,
- ctx->text.left_margin, vwidth,
- ctx->text.wrap == XawtextWrapWord,
- &last, &dim, &dim);
- if (last == tmp)
- ++last;
- if (last <= ctx->text.insertPos)
- top = last;
- else
- break;
- }
- }
- }
-
- if (scroll) {
- if (ctx->text.insertPos < first) { /* Scroll Down */
- while (first > top) {
- last = first;
- first = SrcScan(ctx->text.source, first,
- XawstEOL, XawsdLeft, 2, False);
- vlines -= CountLines(ctx, first, last);
- if (-vlines >= ctx->text.lt.lines) {
- scroll = False;
- break;
- }
- }
- }
- else if (!visible) { /* Scroll Up */
- while (first < top) {
- last = first;
- first = SrcScan(ctx->text.source, first,
- XawstEOL, XawsdRight, 1, True);
- vlines += CountLines(ctx, last, first);
- if (vlines > ctx->text.lt.lines) {
- scroll = False;
- break;
- }
- }
- }
- else
- scroll = False;
- }
-
- /*
- * If a portion of the text that will be scrolled is visible
- */
- if (scroll)
- XawTextScroll(ctx, vlines ? vlines - (ctx->text.lt.lines >> 1) : 0, 0);
- /*
- * Else redraw the entire text window
- */
- else {
- ctx->text.left_margin -= hpixels;
- if (ctx->text.left_margin > ctx->text.r_margin.left)
- ctx->text.left_margin = ctx->text.margin.left =
- ctx->text.r_margin.left;
-
- if (!visible) {
- vlines = ctx->text.lt.lines >> 1;
- if (vlines)
- top = SrcScan(ctx->text.source, ctx->text.insertPos,
- XawstEOL, XawsdLeft, vlines + 1, False);
-
- if (ctx->text.wrap != XawtextWrapNever) {
- int dim;
- int n_lines = CountLines(ctx, top, ctx->text.insertPos);
- int vwidth = GetMaxTextWidth(ctx);
-
- while (n_lines-- > vlines) {
- tmp = top;
- XawTextSinkFindPosition(ctx->text.sink, top,
- ctx->text.left_margin,
- vwidth,
- ctx->text.wrap == XawtextWrapWord,
- &top, &dim, &dim);
- if (tmp == top)
- ++top;
- }
- }
- _XawTextBuildLineTable(ctx, top, True);
- }
- else
- ClearWindow(ctx);
- }
- ctx->text.clear_to_eol = True;
-}
-
-#ifndef OLDXAW
-static int
-ResolveLineNumber(TextWidget ctx)
-{
- int line_number = ctx->text.lt.base_line;
- XawTextPosition position = ctx->text.lt.top;
-
- if (ctx->text.lt.base_line < 1)
- return (ctx->text.line_number);
-
- if (ctx->text.wrap == XawtextWrapNever
- && IsPositionVisible(ctx, ctx->text.insertPos))
- line_number += LineForPosition(ctx, ctx->text.insertPos);
- else if (position < ctx->text.insertPos) {
- while (position < ctx->text.insertPos) {
- position = SrcScan(ctx->text.source, position,
- XawstEOL, XawsdRight, 1, True);
- if (position <= ctx->text.insertPos) {
- ++line_number;
- if (position == ctx->text.lastPos) {
- line_number -= !_XawTextSourceNewLineAtEOF(ctx->text.source);
- break;
- }
- }
- }
- }
- else if (position > ctx->text.insertPos) {
- while (position > ctx->text.insertPos) {
- position = SrcScan(ctx->text.source, position,
- XawstEOL, XawsdLeft, 1, False);
- if (--position >= ctx->text.insertPos)
- --line_number;
- }
- }
-
- return (line_number);
-}
-#endif
-
-/*
- * This routine causes all batched screen updates to be performed
- */
-void
-_XawTextExecuteUpdate(TextWidget ctx)
-{
- if (ctx->text.update_disabled || ctx->text.old_insert < 0)
- return;
-
- if(ctx->text.old_insert != ctx->text.insertPos || ctx->text.showposition)
- _XawTextShowPosition(ctx);
-
- FlushUpdate(ctx);
- InsertCursor((Widget)ctx, XawisOn);
- ctx->text.old_insert = -1;
-#ifndef OLDXAW
- _XawTextSetLineAndColumnNumber(ctx, False);
-#endif
-}
-
-static void
-XawTextDestroy(Widget w)
-{
- TextWidget ctx = (TextWidget)w;
-
- DestroyHScrollBar(ctx);
- DestroyVScrollBar(ctx);
-
- XtFree((char *)ctx->text.s.selections);
- XtFree((char *)ctx->text.lt.info);
- XtFree((char *)ctx->text.search);
- XmuDestroyScanline(ctx->text.update);
- XtReleaseGC((Widget)ctx, ctx->text.gc);
-}
-
-/*
- * by the time we are managed (and get this far) we had better
- * have both a source and a sink
- */
-static void
-XawTextResize(Widget w)
-{
- TextWidget ctx = (TextWidget)w;
-
- PositionVScrollBar(ctx);
- PositionHScrollBar(ctx);
- TextSinkResize(ctx->text.sink);
-
- ctx->text.showposition = True;
- _XawTextBuildLineTable(ctx, ctx->text.lt.top, True);
-}
-
-/*
- * This routine allow the application program to Set attributes.
- */
-/*ARGSUSED*/
-static Boolean
-XawTextSetValues(Widget current, Widget request, Widget cnew,
- ArgList args, Cardinal *num_args)
-{
- TextWidget oldtw = (TextWidget)current;
- TextWidget newtw = (TextWidget)cnew;
- Boolean redisplay = False;
- Boolean display_caret = newtw->text.display_caret;
-#ifndef OLDXAW
- Boolean show_lc = False;
-#endif
-
- newtw->text.display_caret = oldtw->text.display_caret;
- _XawTextPrepareToUpdate(newtw);
- newtw->text.display_caret = display_caret;
-
- if (oldtw->text.r_margin.left != newtw->text.r_margin.left) {
- newtw->text.left_margin = newtw->text.margin.left =
- newtw->text.r_margin.left;
- if (newtw->text.vbar != NULL) {
- newtw->text.left_margin += XtWidth(newtw->text.vbar) +
- XtBorderWidth(newtw->text.vbar);
- }
- redisplay = True;
- }
-
- if (oldtw->text.scroll_vert != newtw->text.scroll_vert) {
- if (newtw->text.scroll_vert == XawtextScrollAlways)
- CreateVScrollBar(newtw);
- else
- DestroyVScrollBar(newtw);
-
- redisplay = True;
- }
-
- if (oldtw->text.r_margin.bottom != newtw->text.r_margin.bottom) {
- newtw->text.margin.bottom = newtw->text.r_margin.bottom;
- if (newtw->text.hbar != NULL)
- newtw->text.margin.bottom += newtw->text.hbar->core.height +
- newtw->text.hbar->core.border_width;
- redisplay = True;
- }
-
- if (oldtw->text.scroll_horiz != newtw->text.scroll_horiz) {
- if (newtw->text.scroll_horiz == XawtextScrollAlways)
- CreateHScrollBar(newtw);
- else
- DestroyHScrollBar(newtw);
-
- redisplay = True;
- }
-
- if (oldtw->text.source != newtw->text.source) {
-#ifndef OLDXAW
- show_lc = True;
- _XawSourceRemoveText(oldtw->text.source, cnew,
- oldtw->text.source &&
- XtParent(oldtw->text.source) == cnew);
- _XawSourceAddText(newtw->text.source, cnew);
-#endif
- _XawTextSetSource((Widget)newtw, newtw->text.source, newtw->text.lt.top,
- newtw->text.insertPos);
- }
-
- newtw->text.redisplay_needed = False;
- XtSetValues((Widget)newtw->text.source, args, *num_args);
- XtSetValues((Widget)newtw->text.sink, args, *num_args);
-
- if (oldtw->text.wrap != newtw->text.wrap
- || oldtw->text.lt.top != newtw->text.lt.top
- || oldtw->text.insertPos != newtw->text.insertPos
- || oldtw->text.r_margin.right != newtw->text.r_margin.right
- || oldtw->text.r_margin.top != newtw->text.r_margin.top
- || oldtw->text.sink != newtw->text.sink
- || newtw->text.redisplay_needed) {
- if (oldtw->text.wrap != newtw->text.wrap) {
- newtw->text.left_margin = newtw->text.margin.left =
- newtw->text.r_margin.left;
- if (oldtw->text.lt.top == newtw->text.lt.top)
- newtw->text.lt.top = SrcScan(newtw->text.source, 0, XawstEOL,
- XawsdLeft, 1, False);
- }
- newtw->text.showposition = True;
-#ifndef OLDXAW
- show_lc = True;
- newtw->text.source_changed = SRC_CHANGE_OVERLAP;
-#endif
- _XawTextBuildLineTable(newtw, newtw->text.lt.top, True);
- redisplay = True;
- }
-
-#ifndef OLDXAW
- if (newtw->text.left_column < 0)
- newtw->text.left_column = 0;
- if (newtw->text.right_column < 0)
- newtw->text.right_column = 0;
-#endif
-
- _XawTextExecuteUpdate(newtw);
-
-#ifndef OLDXAW
- if (show_lc)
- _XawTextSetLineAndColumnNumber(newtw, True);
-#endif
-
- if (redisplay)
- _XawTextSetScrollBars(newtw);
-
- return (redisplay);
-}
-
-/* invoked by the Simple widget's SetValues */
-static Bool
-XawTextChangeSensitive(Widget w)
-{
- Arg args[1];
- TextWidget tw = (TextWidget)w;
-
- (*(&simpleClassRec)->simple_class.change_sensitive)(w);
-
- XtSetArg(args[0], XtNancestorSensitive,
- (tw->core.ancestor_sensitive && tw->core.sensitive));
- if (tw->text.vbar)
- XtSetValues(tw->text.vbar, args, ONE);
- if (tw->text.hbar)
- XtSetValues(tw->text.hbar, args, ONE);
- return (False);
-}
-
-/*
- * Function:
- * XawTextGetValuesHook
- *
- * Parameters:
- * w - Text Widget
- * args - argument list
- * num_args - number of args
- *
- * Description:
- * This is a get values hook routine that gets the
- * values in the text source and sink.
- */
-static void
-XawTextGetValuesHook(Widget w, ArgList args, Cardinal *num_args)
-{
- XtGetValues(((TextWidget)w)->text.source, args, *num_args);
- XtGetValues(((TextWidget)w)->text.sink, args, *num_args);
-}
-
-/*
- * Function:
- * FindGoodPosition
- *
- * Parameters:
- * pos - any position
- *
- * Description:
- * Returns a valid position given any postition.
- *
- * Returns:
- * A position between (0 and lastPos)
- */
-static XawTextPosition
-FindGoodPosition(TextWidget ctx, XawTextPosition pos)
-{
- if (pos < 0)
- return (0);
- return (((pos > ctx->text.lastPos) ? ctx->text.lastPos : pos));
-}
-
-/* Li wrote this so the IM can find a given text position's screen position */
-void
-_XawTextPosToXY(Widget w, XawTextPosition pos, Position *x, Position *y)
-{
- int line, ix, iy;
-
- LineAndXYForPosition((TextWidget)w, pos, &line, &ix, &iy);
- *x = ix;
- *y = iy;
-}
-
-/*******************************************************************
-The following routines provide procedural interfaces to Text window state
-setting and getting. They need to be redone so than the args code can use
-them. I suggest we create a complete set that takes the context as an
-argument and then have the public version lookup the context and call the
-internal one. The major value of this set is that they have actual application
-clients and therefore the functionality provided is required for any future
-version of Text.
-********************************************************************/
-void
-XawTextDisplay(Widget w)
-{
- TextWidget ctx = (TextWidget)w;
-
- if (!XtIsRealized(w))
- return;
-
- _XawTextPrepareToUpdate(ctx);
- ctx->text.clear_to_eol = True;
- DisplayTextWindow(w);
- _XawTextExecuteUpdate(ctx);
-}
-
-void
-XawTextSetSelectionArray(Widget w, XawTextSelectType *sarray)
-{
- ((TextWidget)w)->text.sarray = sarray;
-}
-
-void
-XawTextGetSelectionPos(Widget w, XawTextPosition *left, XawTextPosition *right)
-{
- *left = ((TextWidget)w)->text.s.left;
- *right = ((TextWidget)w)->text.s.right;
-}
-
-void
-_XawTextSetSource(Widget w, Widget source,
- XawTextPosition top, XawTextPosition startPos)
-{
- TextWidget ctx = (TextWidget)w;
-#ifndef OLDXAW
- Bool resolve = False;
-#endif
-
-#ifndef OLDXAW
- if (source != ctx->text.source)
- _XawSourceRemoveText(ctx->text.source, w, ctx->text.source &&
- XtParent(ctx->text.source) == w);
- _XawSourceAddText(source, w);
-
- if (source != ctx->text.source || ctx->text.insertPos != startPos)
- resolve = True;
-
- ctx->text.source_changed = SRC_CHANGE_OVERLAP;
-#endif
- ctx->text.source = source;
- ctx->text.s.left = ctx->text.s.right = 0;
- ctx->text.lastPos = GETLASTPOS;
- top = FindGoodPosition(ctx, top);
- startPos = FindGoodPosition(ctx, startPos);
- ctx->text.insertPos = ctx->text.old_insert = startPos;
- _XawTextPrepareToUpdate(ctx);
-
- _XawTextBuildLineTable(ctx, top, True);
-
- _XawTextExecuteUpdate(ctx);
-#ifndef OLDXAW
- if (resolve)
- _XawTextSetLineAndColumnNumber(ctx, True);
-#endif
-}
-
-void
-XawTextSetSource(Widget w, Widget source, XawTextPosition top)
-{
- _XawTextSetSource(w, source, top, top);
-}
-
-/*
- * This public routine deletes the text from startPos to endPos in a source and
- * then inserts, at startPos, the text that was passed. As a side effect it
- * "invalidates" that portion of the displayed text (if any), so that things
- * will be repainted properly.
- */
-int
-XawTextReplace(Widget w, XawTextPosition startPos, XawTextPosition endPos,
- XawTextBlock *text)
-{
- TextWidget ctx = (TextWidget)w;
- int result;
-#ifndef OLDXAW
- Cardinal i;
- TextSrcObject src = (TextSrcObject)ctx->text.source;
-
- for (i = 0; i < src->textSrc.num_text; i++)
- _XawTextPrepareToUpdate((TextWidget)src->textSrc.text[i]);
-#else
- _XawTextPrepareToUpdate(ctx);
-#endif
-
- endPos = FindGoodPosition(ctx, endPos);
- startPos = FindGoodPosition(ctx, startPos);
- result = _XawTextReplace(ctx, startPos, endPos, text);
-
-#ifndef OLDXAW
- for (i = 0; i < src->textSrc.num_text; i++)
- _XawTextExecuteUpdate((TextWidget)src->textSrc.text[i]);
-#else
- _XawTextExecuteUpdate(ctx);
-#endif
-
- return (result);
-}
-
-XawTextPosition
-XawTextTopPosition(Widget w)
-{
- return (((TextWidget)w)->text.lt.top);
-}
-
-XawTextPosition
-XawTextLastPosition(Widget w)
-{
- return (((TextWidget)w)->text.lastPos);
-}
-
-void
-XawTextSetInsertionPoint(Widget w, XawTextPosition position)
-{
- TextWidget ctx = (TextWidget)w;
-
- _XawTextPrepareToUpdate(ctx);
- ctx->text.insertPos = FindGoodPosition(ctx, position);
- ctx->text.showposition = True;
- ctx->text.from_left = -1;
-
- _XawTextExecuteUpdate(ctx);
-#ifndef OLDXAW
- _XawTextSetLineAndColumnNumber(ctx, False);
-#endif
-}
-
-XawTextPosition
-XawTextGetInsertionPoint(Widget w)
-{
- return (((TextWidget)w)->text.insertPos);
-}
-
-/*
- * Note: Must walk the selection list in opposite order from TextLoseSelection
- */
-void
-XawTextUnsetSelection(Widget w)
-{
- TextWidget ctx = (TextWidget)w;
-
- while (ctx->text.s.atom_count != 0) {
- Atom sel = ctx->text.s.selections[ctx->text.s.atom_count - 1];
-
- if (sel != (Atom) 0) {
- /*
- * As selections are lost the atom_count will decrement
- */
- if (GetCutBufferNumber(sel) == NOT_A_CUT_BUFFER)
- XtDisownSelection(w, sel, ctx->text.time);
- TextLoseSelection(w, &sel); /* In case this is a cut buffer, or
- XtDisownSelection failed to call us */
- }
- }
-}
-
-void
-XawTextSetSelection(Widget w, XawTextPosition left, XawTextPosition right)
-{
- TextWidget ctx = (TextWidget)w;
-
- _XawTextPrepareToUpdate(ctx);
- _XawTextSetSelection(ctx, FindGoodPosition(ctx, left),
- FindGoodPosition(ctx, right), NULL, 0);
- _XawTextExecuteUpdate(ctx);
-}
-
-void
-XawTextInvalidate(Widget w, XawTextPosition from, XawTextPosition to)
-{
- TextWidget ctx = (TextWidget)w;
-
- from = FindGoodPosition(ctx, from);
- to = FindGoodPosition(ctx, to);
- ctx->text.lastPos = GETLASTPOS;
- _XawTextPrepareToUpdate(ctx);
- _XawTextNeedsUpdating(ctx, from, to);
- _XawTextExecuteUpdate(ctx);
-}
-
-/*ARGSUSED*/
-void
-XawTextDisableRedisplay(Widget w)
-{
- ((TextWidget)w)->text.update_disabled = True;
- _XawTextPrepareToUpdate((TextWidget)w);
-}
-
-void
-XawTextEnableRedisplay(Widget w)
-{
- TextWidget ctx = (TextWidget)w;
- XawTextPosition lastPos;
-
- if (!ctx->text.update_disabled)
- return;
-
- ctx->text.update_disabled = False;
- lastPos = ctx->text.lastPos = GETLASTPOS;
- ctx->text.lt.top = FindGoodPosition(ctx, ctx->text.lt.top);
- ctx->text.insertPos = FindGoodPosition(ctx, ctx->text.insertPos);
-
- if (ctx->text.s.left > lastPos || ctx->text.s.right > lastPos)
- ctx->text.s.left = ctx->text.s.right = 0;
-
- _XawTextExecuteUpdate(ctx);
-}
-
-Widget
-XawTextGetSource(Widget w)
-{
- return (((TextWidget)w)->text.source);
-}
-
-Widget
-XawTextGetSink(Widget w)
-{
- return (((TextWidget)w)->text.sink);
-}
-
-void
-XawTextDisplayCaret(Widget w,
-#if NeedWidePrototypes
- int display_caret
-#else
- Boolean display_caret
-#endif
-)
-{
- TextWidget ctx = (TextWidget)w;
-
- if (XtIsRealized(w)) {
- _XawTextPrepareToUpdate(ctx);
- ctx->text.display_caret = display_caret;
- _XawTextExecuteUpdate(ctx);
- }
- else
- ctx->text.display_caret = display_caret;
-}
-
-/*
- * Function:
- * XawTextSearch
- *
- * Parameters:
- * w - text widget
- * dir - direction to search
- * text - text block containing info about the string to search for
- *
- * Description:
- * Searches for the given text block.
- *
- * Returns:
- * The position of the text found, or XawTextSearchError on an error
- */
-XawTextPosition
-XawTextSearch(Widget w,
-#if NeedWidePrototypes
- int dir,
-#else
- XawTextScanDirection dir,
-#endif
- XawTextBlock *text)
-{
- TextWidget ctx = (TextWidget)w;
-
- return (SrcSearch(ctx->text.source, ctx->text.insertPos, dir, text));
-}
-
-TextClassRec textClassRec = {
- /* core */
- {
- (WidgetClass)&simpleClassRec, /* superclass */
- "Text", /* class_name */
- sizeof(TextRec), /* widget_size */
- XawTextClassInitialize, /* class_initialize */
- NULL, /* class_part_init */
- False, /* class_inited */
- XawTextInitialize, /* initialize */
- NULL, /* initialize_hook */
- XawTextRealize, /* realize */
- _XawTextActionsTable, /* actions */
- 0, /* num_actions */
- resources, /* resources */
- XtNumber(resources), /* num_resource */
- NULLQUARK, /* xrm_class */
- True, /* compress_motion */
- XtExposeGraphicsExpose | /* compress_exposure */
- XtExposeNoExpose,
- True, /* compress_enterleave */
- False, /* visible_interest */
- XawTextDestroy, /* destroy */
- XawTextResize, /* resize */
- XawTextExpose, /* expose */
- XawTextSetValues, /* set_values */
- NULL, /* set_values_hook */
- XtInheritSetValuesAlmost, /* set_values_almost */
- XawTextGetValuesHook, /* get_values_hook */
- NULL, /* accept_focus */
- XtVersion, /* version */
- NULL, /* callback_private */
- _XawDefaultTextTranslations, /* tm_table */
- XtInheritQueryGeometry, /* query_geometry */
- XtInheritDisplayAccelerator, /* display_accelerator */
- NULL, /* extension */
- },
- /* simple */
- {
- XawTextChangeSensitive, /* change_sensitive */
- },
- /* text */
- {
- NULL, /* extension */
- }
-};
-
-WidgetClass textWidgetClass = (WidgetClass)&textClassRec;
+/***********************************************************
+
+Copyright 1987, 1988, 1994, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+
+Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+******************************************************************/
+
+/*
+ * Copyright (c) 1998 by The XFree86 Project, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Except as contained in this notice, the name of the XFree86 Project shall
+ * not be used in advertising or otherwise to promote the sale, use or other
+ * dealings in this Software without prior written authorization from the
+ * XFree86 Project.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <X11/IntrinsicP.h>
+#include <X11/StringDefs.h>
+#include <X11/Shell.h>
+#include <X11/Xatom.h>
+#include <X11/Xfuncs.h>
+#include <X11/Xutil.h>
+#include <X11/Xmu/Misc.h>
+#include <X11/Xmu/SysUtil.h>
+#include <X11/Xmu/Xmu.h>
+#include <X11/Xaw/Cardinals.h>
+#include <X11/Xaw/MultiSinkP.h>
+#include <X11/Xaw/TextP.h>
+#include <X11/Xaw/TextSrcP.h>
+#include <X11/Xaw/TextSinkP.h>
+#include <X11/Xaw/Scrollbar.h>
+#include <X11/Xaw/XawImP.h>
+#include <X11/Xaw/XawInit.h>
+#include "Private.h"
+#include "XawI18n.h"
+
+#ifndef MAX_LEN_CT
+#define MAX_LEN_CT 6 /* for sequence: ESC $ ( A \xx \xx */
+#endif
+
+unsigned long FMT8BIT = 0L;
+unsigned long XawFmt8Bit = 0L;
+unsigned long XawFmtWide = 0L;
+
+#define SinkClearToBG _XawTextSinkClearToBackground
+
+#define SrcScan XawTextSourceScan
+#define SrcRead XawTextSourceRead
+#define SrcReplace XawTextSourceReplace
+#define SrcSearch XawTextSourceSearch
+#define SrcCvtSel XawTextSourceConvertSelection
+#define SrcSetSelection XawTextSourceSetSelection
+
+#define MULTI_CLICK_TIME 500L
+
+#define SRC_CHANGE_NONE 0
+#define SRC_CHANGE_AFTER 1
+#define SRC_CHANGE_BEFORE 2
+#define SRC_CHANGE_OVERLAP 3
+
+#define Superclass (&simpleClassRec)
+
+/*
+ * Compute a the maximum length of a cut buffer that we can pass at any
+ * time. The 64 allows for the overhead of the Change Property request.
+ */
+#define MAX_CUT_LEN(dpy) (XMaxRequestSize(dpy) - 64)
+
+#define ClearWindow(ctx) \
+ _XawTextNeedsUpdating((ctx), \
+ (ctx)->text.lt.top, \
+ (ctx)->text.lt.info[ctx->text.lt.lines].position)
+
+/*
+ * Class Methods
+ */
+static void XawTextClassInitialize(void);
+static void XawTextInitialize(Widget, Widget, ArgList, Cardinal*);
+static void XawTextRealize(Widget, XtValueMask*, XSetWindowAttributes*);
+static void XawTextDestroy(Widget);
+static void XawTextResize(Widget);
+static void XawTextExpose(Widget, XEvent*, Region);
+static Boolean XawTextSetValues(Widget, Widget, Widget, ArgList, Cardinal*);
+static void XawTextGetValuesHook(Widget, ArgList, Cardinal*);
+static Bool XawTextChangeSensitive(Widget);
+
+/*
+ * Prototypes
+ */
+static XawTextPosition _BuildLineTable(TextWidget, XawTextPosition, int);
+static void _CreateCutBuffers(Display*);
+static Boolean TextConvertSelection(Widget, Atom*, Atom*, Atom*, XtPointer*,
+ unsigned long*, int*);
+static int CountLines(TextWidget, XawTextPosition, XawTextPosition);
+static void CreateHScrollBar(TextWidget);
+static void CreateVScrollBar(TextWidget);
+static void CvtStringToScrollMode(XrmValuePtr, Cardinal*,
+ XrmValuePtr, XrmValuePtr);
+static Boolean CvtScrollModeToString(Display*, XrmValue*, Cardinal*,
+ XrmValue*, XrmValue*, XtPointer*);
+static void CvtStringToWrapMode(XrmValuePtr, Cardinal*,
+ XrmValuePtr, XrmValuePtr);
+static Boolean CvtWrapModeToString(Display*, XrmValue*, Cardinal*,
+ XrmValue*, XrmValue*, XtPointer*);
+static Boolean CvtStringToJustifyMode(Display*, XrmValue*, Cardinal*,
+ XrmValue*, XrmValue*, XtPointer*);
+static Boolean CvtJustifyModeToString(Display*, XrmValue*, Cardinal*,
+ XrmValue*, XrmValue*, XtPointer*);
+static void DestroyHScrollBar(TextWidget);
+static void DestroyVScrollBar(TextWidget);
+#ifndef OLDXAW
+static void DisplayText(Widget, XawTextPosition, XawTextPosition);
+#endif
+static void OldDisplayText(Widget, XawTextPosition, XawTextPosition);
+static void DisplayTextWindow(Widget);
+static void DoCopyArea(TextWidget, int, int, unsigned int, unsigned int,
+ int, int);
+static void DoSelection(TextWidget, XawTextPosition, Time, Bool);
+static void ExtendSelection(TextWidget, XawTextPosition, Bool);
+static XawTextPosition FindGoodPosition(TextWidget, XawTextPosition);
+static void FlushUpdate(TextWidget);
+static int GetCutBufferNumber(Atom);
+static int GetMaxTextWidth(TextWidget);
+static unsigned int GetWidestLine(TextWidget);
+static void HScroll(Widget, XtPointer, XtPointer);
+static void HJump(Widget, XtPointer, XtPointer);
+static void InsertCursor(Widget, XawTextInsertState);
+static Bool LineAndXYForPosition(TextWidget, XawTextPosition, int*,
+ int*, int*);
+static int LineForPosition(TextWidget, XawTextPosition);
+static void TextLoseSelection(Widget, Atom*);
+static Bool MatchSelection(Atom, XawTextSelection*);
+static void ModifySelection(TextWidget, XawTextPosition, XawTextPosition);
+static XawTextPosition PositionForXY(TextWidget, int, int);
+static void PositionHScrollBar(TextWidget);
+static void PositionVScrollBar(TextWidget);
+#ifndef OLDXAW
+static int ResolveColumnNumber(TextWidget);
+static int ResolveLineNumber(TextWidget);
+#endif
+static void _SetSelection(TextWidget, XawTextPosition, XawTextPosition,
+ Atom*, Cardinal);
+static void TextSinkResize(Widget);
+static void UpdateTextInRectangle(TextWidget, XRectangle*);
+static void UpdateTextInLine(TextWidget, int, int, int);
+static void VScroll(Widget, XtPointer, XtPointer);
+static void VJump(Widget, XtPointer, XtPointer);
+
+/*
+ * External
+ */
+void _XawTextAlterSelection(TextWidget,
+ XawTextSelectionMode, XawTextSelectionAction,
+ String*, Cardinal*);
+void _XawTextCheckResize(TextWidget);
+void _XawTextClearAndCenterDisplay(TextWidget);
+void _XawTextExecuteUpdate(TextWidget);
+char *_XawTextGetText(TextWidget, XawTextPosition, XawTextPosition);
+void _XawTextPrepareToUpdate(TextWidget);
+int _XawTextReplace(TextWidget, XawTextPosition, XawTextPosition,
+ XawTextBlock*);
+Atom *_XawTextSelectionList(TextWidget, String*, Cardinal);
+void _XawTextSetScrollBars(TextWidget);
+void _XawTextSetSelection(TextWidget, XawTextPosition, XawTextPosition,
+ String*, Cardinal);
+void _XawTextVScroll(TextWidget, int);
+void XawTextScroll(TextWidget, int, int);
+void _XawTextSetSource(Widget, Widget, XawTextPosition, XawTextPosition);
+#ifndef OLDXAW
+void _XawTextSetLineAndColumnNumber(TextWidget, Bool);
+#endif
+void _XawTextSourceChanged(Widget, XawTextPosition, XawTextPosition,
+ XawTextBlock*, int);
+
+/* Not used by other modules, but were extern on previous versions
+ * of the library
+ */
+void _XawTextShowPosition(TextWidget);
+
+/*
+ * From TextAction.c
+ */
+extern void _XawTextZapSelection(TextWidget, XEvent*, Bool);
+
+/*
+ * From TextSrc.c
+ */
+void _XawSourceAddText(Widget, Widget);
+void _XawSourceRemoveText(Widget, Widget, Bool);
+Bool _XawTextSourceNewLineAtEOF(Widget);
+
+/*
+ * From TextSink.c
+ */
+void _XawTextSinkClearToBackground(Widget, int, int, unsigned, unsigned);
+void _XawTextSinkDisplayText(Widget, int, int, XawTextPosition, XawTextPosition,
+ Bool);
+
+/****************************************************************
+ *
+ * Full class record constant
+ *
+ ****************************************************************/
+/*
+ * From TextTr.c
+ */
+static XawTextSelectType defaultSelectTypes[] = {
+ XawselectPosition, XawselectAlphaNumeric, XawselectWord, XawselectLine,
+ XawselectParagraph, XawselectAll, XawselectNull,
+};
+
+static XPointer defaultSelectTypesPtr = (XPointer)defaultSelectTypes;
+static Dimension defWidth = 100;
+static Dimension defHeight = DEFAULT_TEXT_HEIGHT;
+
+#define offset(field) XtOffsetOf(TextRec, field)
+static XtResource resources[] = {
+ {
+ XtNwidth,
+ XtCWidth,
+ XtRDimension,
+ sizeof(Dimension),
+ offset(core.width),
+ XtRDimension,
+ (XtPointer)&defWidth
+ },
+ {
+ XtNcursor,
+ XtCCursor,
+ XtRCursor,
+ sizeof(Cursor),
+ offset(simple.cursor),
+ XtRString,
+ "xterm"
+ },
+ {
+ XtNheight,
+ XtCHeight,
+ XtRDimension,
+ sizeof(Dimension),
+ offset(core.height),
+ XtRDimension,
+ (XtPointer)&defHeight
+ },
+ {
+ XtNdisplayPosition,
+ XtCTextPosition,
+ XtRInt,
+ sizeof(XawTextPosition),
+ offset(text.lt.top),
+ XtRImmediate,
+ (XtPointer)0
+ },
+ {
+ XtNinsertPosition,
+ XtCTextPosition,
+ XtRInt,
+ sizeof(XawTextPosition),
+ offset(text.insertPos),
+ XtRImmediate,
+ (XtPointer)0
+ },
+ {
+ XtNleftMargin,
+ XtCMargin,
+ XtRPosition,
+ sizeof(Position),
+ offset(text.r_margin.left),
+ XtRImmediate,
+ (XtPointer)2
+ },
+ {
+ XtNrightMargin,
+ XtCMargin,
+ XtRPosition,
+ sizeof(Position),
+ offset(text.r_margin.right),
+ XtRImmediate,
+ (XtPointer)4
+ },
+ {
+ XtNtopMargin,
+ XtCMargin,
+ XtRPosition,
+ sizeof(Position),
+ offset(text.r_margin.top),
+ XtRImmediate,
+ (XtPointer)2
+ },
+ {
+ XtNbottomMargin,
+ XtCMargin,
+ XtRPosition,
+ sizeof(Position),
+ offset(text.r_margin.bottom),
+ XtRImmediate,
+ (XtPointer)2
+ },
+ {
+ XtNselectTypes,
+ XtCSelectTypes,
+ XtRPointer,
+ sizeof(XawTextSelectType*),
+ offset(text.sarray),
+ XtRPointer,
+ (XtPointer)&defaultSelectTypesPtr
+ },
+ {
+ XtNtextSource,
+ XtCTextSource,
+ XtRWidget,
+ sizeof(Widget),
+ offset(text.source),
+ XtRImmediate,
+ NULL
+ },
+ {
+ XtNtextSink,
+ XtCTextSink,
+ XtRWidget,
+ sizeof(Widget),
+ offset(text.sink),
+ XtRImmediate,
+ NULL
+ },
+ {
+ XtNdisplayCaret,
+ XtCOutput,
+ XtRBoolean,
+ sizeof(Boolean),
+ offset(text.display_caret),
+ XtRImmediate,
+ (XtPointer)True
+ },
+ {
+ XtNscrollVertical,
+ XtCScroll,
+ XtRScrollMode,
+ sizeof(XawTextScrollMode),
+ offset(text.scroll_vert),
+ XtRImmediate,
+ (XtPointer)False
+ },
+ {
+ XtNscrollHorizontal,
+ XtCScroll,
+ XtRScrollMode,
+ sizeof(XawTextScrollMode),
+ offset(text.scroll_horiz),
+ XtRImmediate,
+ (XtPointer)False
+ },
+ {
+ XtNwrap,
+ XtCWrap,
+ XtRWrapMode,
+ sizeof(XawTextWrapMode),
+ offset(text.wrap),
+ XtRImmediate,
+ (XtPointer)XawtextWrapNever
+ },
+ {
+ XtNautoFill,
+ XtCAutoFill,
+ XtRBoolean,
+ sizeof(Boolean),
+ offset(text.auto_fill),
+ XtRImmediate,
+ (XtPointer)False
+ },
+#ifndef OLDXAW
+ {
+ XtNpositionCallback,
+ XtCCallback,
+ XtRCallback,
+ sizeof(XtPointer),
+ offset(text.position_callbacks),
+ XtRCallback,
+ NULL
+ },
+ {
+ XtNleftColumn,
+ XtCColumn,
+ XtRShort,
+ sizeof(short),
+ offset(text.left_column),
+ XtRImmediate,
+ (XtPointer)0
+ },
+ {
+ XtNrightColumn,
+ XtCColumn,
+ XtRShort,
+ sizeof(short),
+ offset(text.right_column),
+ XtRImmediate,
+ (XtPointer)0
+ },
+ {
+ XtNjustifyMode,
+ XtCJustifyMode,
+ XtRJustifyMode,
+ sizeof(XawTextJustifyMode),
+ offset(text.justify),
+ XtRImmediate,
+ (XtPointer)XawjustifyLeft
+ },
+#endif /* OLDXAW */
+};
+#undef offset
+
+#define done(address, type) \
+ { toVal->size = sizeof(type); toVal->addr = (XPointer)address; }
+
+static XrmQuark QWrapNever, QWrapLine, QWrapWord;
+#ifndef notdef
+static XrmQuark QScrollNever, QScrollWhenNeeded, QScrollAlways;
+#endif
+static XrmQuark QJustifyLeft, QJustifyRight, QJustifyCenter, QJustifyFull;
+
+/*ARGSUSED*/
+static void
+CvtStringToScrollMode(XrmValuePtr args, Cardinal *num_args,
+ XrmValuePtr fromVal, XrmValuePtr toVal)
+{
+ static XawTextScrollMode scrollMode = XawtextScrollNever;
+ XrmQuark q;
+ char name[32];
+
+ XmuNCopyISOLatin1Lowered(name, (char *)fromVal->addr, sizeof(name));
+ q = XrmStringToQuark(name);
+
+ if (q == QScrollNever || q == QScrollWhenNeeded)
+ scrollMode = XawtextScrollNever;
+ else if (q == QScrollAlways)
+ scrollMode = XawtextScrollAlways;
+ else if (strcmp(name, "true") == 0 || strcmp(name, "1") == 0)
+ scrollMode = XawtextScrollAlways;
+ else if (strcmp(name, "false") == 0 || strcmp(name, "0") == 0)
+ scrollMode = XawtextScrollNever;
+ else
+ XtStringConversionWarning((char *)fromVal->addr, XtRScrollMode);
+
+ done(&scrollMode, XawTextScrollMode);
+}
+
+/*ARGSUSED*/
+static Boolean
+CvtScrollModeToString(Display *dpy, XrmValue *args, Cardinal *num_args,
+ XrmValue *fromVal, XrmValue *toVal, XtPointer *data)
+{
+ static char *buffer;
+ Cardinal size;
+
+ switch (*(XawTextScrollMode *)fromVal->addr) {
+ case XawtextScrollNever:
+ case XawtextScrollWhenNeeded:
+ buffer = XtEtextScrollNever;
+ break;
+ case XawtextScrollAlways:
+ buffer = XtEtextScrollAlways;
+ break;
+ default:
+ XawTypeToStringWarning(dpy, XtRScrollMode);
+ toVal->addr = NULL;
+ toVal->size = 0;
+ return (False);
+ }
+ size = strlen(buffer) + 1;
+ if (toVal->addr != NULL) {
+ if (toVal->size < size) {
+ toVal->size = size;
+ return (False);
+ }
+ strcpy((char *)toVal->addr, buffer);
+ }
+ else
+ toVal->addr = (XPointer)buffer;
+ toVal->size = sizeof(String);
+
+ return (True);
+}
+
+/*ARGSUSED*/
+static void
+CvtStringToWrapMode(XrmValuePtr args, Cardinal *num_args,
+ XrmValuePtr fromVal, XrmValuePtr toVal)
+{
+ static XawTextWrapMode wrapMode = XawtextWrapNever;
+ XrmQuark q;
+ char lowerName[6];
+
+ XmuNCopyISOLatin1Lowered(lowerName, (char *)fromVal->addr,
+ sizeof(lowerName));
+ q = XrmStringToQuark(lowerName);
+
+ if (q == QWrapNever)
+ wrapMode = XawtextWrapNever;
+ else if (q == QWrapLine)
+ wrapMode = XawtextWrapLine;
+ else if (q == QWrapWord)
+ wrapMode = XawtextWrapWord;
+ else
+ XtStringConversionWarning((char *)fromVal->addr, XtRWrapMode);
+
+ done(&wrapMode, XawTextWrapMode);
+}
+
+/*ARGSUSED*/
+static Boolean
+CvtWrapModeToString(Display *dpy, XrmValue *args, Cardinal *num_args,
+ XrmValue *fromVal, XrmValue *toVal, XtPointer *data)
+{
+ static char *buffer;
+ Cardinal size;
+
+ switch (*(XawTextWrapMode *)fromVal->addr) {
+ case XawtextWrapNever:
+ buffer = XtEtextWrapNever;
+ break;
+ case XawtextWrapLine:
+ buffer = XtEtextWrapLine;
+ break;
+ case XawtextWrapWord:
+ buffer = XtEtextWrapWord;
+ break;
+ default:
+ XawTypeToStringWarning(dpy, XtRWrapMode);
+ toVal->addr = NULL;
+ toVal->size = 0;
+ return (False);
+ }
+ size = strlen(buffer) + 1;
+ if (toVal->addr != NULL) {
+ if (toVal->size < size) {
+ toVal->size = size;
+ return (False);
+ }
+ strcpy((char *)toVal->addr, buffer);
+ }
+ else
+ toVal->addr = (XPointer)buffer;
+ toVal->size = sizeof(String);
+
+ return (True);
+}
+
+/*ARGSUSED*/
+static Boolean
+CvtStringToJustifyMode(Display *dpy, XrmValue *args, Cardinal *num_args,
+ XrmValue *fromVal, XrmValue *toVal, XtPointer *data)
+{
+ XawTextJustifyMode justify;
+ XrmQuark q;
+ char lowerName[8];
+
+ XmuNCopyISOLatin1Lowered(lowerName, (char *)fromVal->addr,
+ sizeof(lowerName));
+ q = XrmStringToQuark(lowerName);
+
+ if (q == QJustifyLeft)
+ justify = XawjustifyLeft;
+ else if (q == QJustifyRight)
+ justify = XawjustifyRight;
+ else if (q == QJustifyCenter)
+ justify = XawjustifyCenter;
+ else if(q == QJustifyFull)
+ justify = XawjustifyFull;
+ else {
+ XtStringConversionWarning((char *)fromVal->addr, XtRJustifyMode);
+ return (False);
+ }
+
+ toVal->size = sizeof(XawTextJustifyMode);
+ *(XawTextJustifyMode *)(toVal->addr) = justify;
+
+ return (True);
+}
+
+
+/*ARGSUSED*/
+static Boolean
+CvtJustifyModeToString(Display *dpy, XrmValue *args, Cardinal *num_args,
+ XrmValue *fromVal, XrmValue *toVal, XtPointer *data)
+{
+ static char *buffer;
+ Cardinal size;
+
+ switch (*(XawTextJustifyMode *)fromVal->addr) {
+ case XawjustifyLeft:
+ buffer = XtEtextJustifyLeft;
+ break;
+ case XawjustifyRight:
+ buffer = XtEtextJustifyRight;
+ break;
+ case XawjustifyCenter:
+ buffer = XtEtextJustifyCenter;
+ break;
+ case XawjustifyFull:
+ buffer = XtEtextJustifyFull;
+ break;
+ default:
+ XawTypeToStringWarning(dpy, XtRJustifyMode);
+ toVal->addr = NULL;
+ toVal->size = 0;
+ return (False);
+ }
+ size = strlen(buffer) + 1;
+ if (toVal->addr != NULL) {
+ if (toVal->size < size) {
+ toVal->size = size;
+ return (False);
+ }
+ strcpy((char *)toVal->addr, buffer);
+ }
+ else
+ toVal->addr = (XPointer)buffer;
+ toVal->size = sizeof(String);
+
+ return (True);
+}
+
+#undef done
+
+static void
+XawTextClassInitialize(void)
+{
+ if (!XawFmt8Bit)
+ FMT8BIT = XawFmt8Bit = XrmPermStringToQuark("FMT8BIT");
+ if (!XawFmtWide)
+ XawFmtWide = XrmPermStringToQuark("FMTWIDE");
+
+ XawInitializeWidgetSet();
+
+ textClassRec.core_class.num_actions = _XawTextActionsTableCount;
+
+ QWrapNever = XrmPermStringToQuark(XtEtextWrapNever);
+ QWrapLine = XrmPermStringToQuark(XtEtextWrapLine);
+ QWrapWord = XrmPermStringToQuark(XtEtextWrapWord);
+ XtAddConverter(XtRString, XtRWrapMode, CvtStringToWrapMode, NULL, 0);
+ XtSetTypeConverter(XtRWrapMode, XtRString, CvtWrapModeToString,
+ NULL, 0, XtCacheNone, NULL);
+ QScrollNever = XrmPermStringToQuark(XtEtextScrollNever);
+ QScrollWhenNeeded = XrmPermStringToQuark(XtEtextScrollWhenNeeded);
+ QScrollAlways = XrmPermStringToQuark(XtEtextScrollAlways);
+ XtAddConverter(XtRString, XtRScrollMode, CvtStringToScrollMode,
+ NULL, 0);
+ XtSetTypeConverter(XtRScrollMode, XtRString, CvtScrollModeToString,
+ NULL, 0, XtCacheNone, NULL);
+ QJustifyLeft = XrmPermStringToQuark(XtEtextJustifyLeft);
+ QJustifyRight = XrmPermStringToQuark(XtEtextJustifyRight);
+ QJustifyCenter = XrmPermStringToQuark(XtEtextJustifyCenter);
+ QJustifyFull = XrmPermStringToQuark(XtEtextJustifyFull);
+ XtSetTypeConverter(XtRString, XtRJustifyMode, CvtStringToJustifyMode,
+ NULL, 0, XtCacheNone, NULL);
+ XtSetTypeConverter(XtRJustifyMode, XtRString, CvtJustifyModeToString,
+ NULL, 0, XtCacheNone, NULL);
+}
+
+/*
+ * Function:
+ * PositionHScrollBar
+ *
+ * Parameters:
+ * ctx - text widget
+ *
+ * Description:
+ * Positions the Horizontal scrollbar.
+ */
+static void
+PositionHScrollBar(TextWidget ctx)
+{
+ Widget hbar = ctx->text.hbar, vbar = ctx->text.vbar;
+ Position x, y;
+ Dimension width, height;
+
+ if (ctx->text.hbar == NULL)
+ return;
+
+ if (vbar != NULL)
+ x = XtWidth(vbar);
+ else
+ x = -XtBorderWidth(hbar);
+ y = XtHeight(ctx) - XtHeight(hbar) - XtBorderWidth(hbar);
+ if (vbar != NULL) {
+ width = XtWidth(ctx) - XtWidth(vbar) - XtBorderWidth(vbar);
+ if (width > XtWidth(ctx))
+ width = XtWidth(ctx);
+ }
+ else
+ width = XtWidth(ctx);
+ height = XtHeight(hbar);
+
+ XtConfigureWidget(hbar, x, y, width, height, XtBorderWidth(hbar));
+}
+
+/*
+ * Function:
+ * PositionVScrollBar
+ *
+ * Parameters:
+ * ctx - text widget
+ *
+ * Description:
+ * Positions the Vertical scrollbar.
+ */
+static void
+PositionVScrollBar(TextWidget ctx)
+{
+ Widget vbar = ctx->text.vbar;
+ Position x, y;
+ Dimension width, height;
+
+ if (vbar == NULL)
+ return;
+
+ x = y = -XtBorderWidth(vbar);
+ height = XtHeight(ctx);
+ width = XtWidth(vbar);
+
+ XtConfigureWidget(vbar, x, y, width, height, XtBorderWidth(vbar));
+}
+
+static void
+CreateVScrollBar(TextWidget ctx)
+{
+ Widget vbar;
+
+ if (ctx->text.vbar != NULL)
+ return;
+
+ ctx->text.vbar = vbar =
+ XtCreateWidget("vScrollbar", scrollbarWidgetClass, (Widget)ctx, NULL, 0);
+ XtAddCallback(vbar, XtNscrollProc, VScroll, (XtPointer)ctx);
+ XtAddCallback(vbar, XtNjumpProc, VJump, (XtPointer)ctx);
+
+ ctx->text.r_margin.left += XtWidth(vbar) + XtBorderWidth(vbar);
+ ctx->text.left_margin = ctx->text.margin.left = ctx->text.r_margin.left;
+
+ PositionVScrollBar(ctx);
+ PositionHScrollBar(ctx);
+ TextSinkResize(ctx->text.sink);
+
+ if (XtIsRealized((Widget)ctx)) {
+ XtRealizeWidget(vbar);
+ XtMapWidget(vbar);
+ }
+ XtSetKeyboardFocus(vbar, (Widget)ctx);
+}
+
+/*
+ * Function:
+ * DestroyVScrollBar
+ *
+ * Parameters:
+ * ctx - parent text widget
+ *
+ * Description:
+ * Removes vertical ScrollBar.
+ */
+static void
+DestroyVScrollBar(TextWidget ctx)
+{
+ Widget vbar = ctx->text.vbar;
+
+ if (vbar == NULL)
+ return;
+
+ ctx->text.r_margin.left -= XtWidth(vbar) + XtBorderWidth(vbar);
+ ctx->text.left_margin = ctx->text.margin.left = ctx->text.r_margin.left;
+
+ XtDestroyWidget(vbar);
+ ctx->text.vbar = NULL;
+ if (!ctx->core.being_destroyed) {
+ PositionHScrollBar(ctx);
+ TextSinkResize(ctx->text.sink);
+ }
+}
+
+static void
+CreateHScrollBar(TextWidget ctx)
+{
+ Arg args[1];
+ Widget hbar;
+ int bottom;
+
+ if (ctx->text.hbar != NULL)
+ return;
+
+ XtSetArg(args[0], XtNorientation, XtorientHorizontal);
+ ctx->text.hbar = hbar =
+ XtCreateWidget("hScrollbar", scrollbarWidgetClass, (Widget)ctx, args, 1);
+ XtAddCallback(hbar, XtNscrollProc, HScroll, (XtPointer)ctx);
+ XtAddCallback(hbar, XtNjumpProc, HJump, (XtPointer)ctx);
+
+ bottom = ctx->text.r_margin.bottom + XtHeight(hbar) + XtBorderWidth(hbar);
+
+ ctx->text.margin.bottom = ctx->text.r_margin.bottom = bottom;
+
+ PositionHScrollBar(ctx);
+ TextSinkResize(ctx->text.sink);
+
+ if (XtIsRealized((Widget)ctx)) {
+ XtRealizeWidget(hbar);
+ XtMapWidget(hbar);
+ }
+ XtSetKeyboardFocus(hbar, (Widget)ctx);
+}
+
+/*
+ * Function:
+ * DestroyHScrollBar
+ *
+ * Parameters:
+ * ctx - parent text widget
+ *
+ * Description:
+ * Removes horizontal ScrollBar.
+ */
+static void
+DestroyHScrollBar(TextWidget ctx)
+{
+ Widget hbar = ctx->text.hbar;
+
+ if (hbar == NULL)
+ return;
+
+ ctx->text.r_margin.bottom -= XtHeight(hbar) + XtBorderWidth(hbar);
+ ctx->text.margin.bottom = ctx->text.r_margin.bottom;
+
+ XtDestroyWidget(hbar);
+ ctx->text.hbar = NULL;
+ if (!ctx->core.being_destroyed)
+ TextSinkResize(ctx->text.sink);
+}
+
+/*ARGSUSED*/
+static void
+XawTextInitialize(Widget request, Widget cnew,
+ ArgList args, Cardinal *num_args)
+{
+ TextWidget ctx = (TextWidget)cnew;
+
+ ctx->text.lt.lines = 0;
+ ctx->text.lt.info = (XawTextLineTableEntry *)
+ XtCalloc(1, sizeof(XawTextLineTableEntry));
+#ifndef OLDXAW
+ ctx->text.lt.base_line = 1;
+#endif
+ (void)bzero(&ctx->text.origSel, sizeof(XawTextSelection));
+ (void)bzero(&ctx->text.s, sizeof(XawTextSelection));
+ ctx->text.s.type = XawselectPosition;
+ ctx->text.salt = NULL;
+ ctx->text.hbar = ctx->text.vbar = NULL;
+ ctx->text.lasttime = 0;
+ ctx->text.time = 0;
+ ctx->text.showposition = True;
+ ctx->text.lastPos = ctx->text.source != NULL ?
+ XawTextGetLastPosition(ctx) : 0;
+ ctx->text.file_insert = NULL;
+ ctx->text.search = NULL;
+ ctx->text.update = XmuNewScanline(0, 0, 0);
+ ctx->text.gc = XtGetGC(cnew, 0, 0);
+ ctx->text.hasfocus = False;
+ ctx->text.margin = ctx->text.r_margin; /* Strucure copy */
+ ctx->text.left_margin = ctx->text.r_margin.left;
+ ctx->text.update_disabled = False;
+ ctx->text.clear_to_eol = True;
+ ctx->text.old_insert = -1;
+ ctx->text.mult = 1;
+ ctx->text.salt2 = NULL;
+ ctx->text.from_left = -1;
+
+#ifndef OLDXAW
+ ctx->text.numeric = False;
+ ctx->text.selection_state = False;
+ ctx->text.kill_ring = 0;
+
+ ctx->text.line_number = -1;
+ ctx->text.column_number = -1;
+ ctx->text.source_changed = SRC_CHANGE_NONE;
+
+ ctx->text.kill_ring_ptr = NULL;
+ ctx->text.overwrite = False;
+#endif
+
+ if (XtHeight(ctx) == DEFAULT_TEXT_HEIGHT) {
+ XtHeight(ctx) = VMargins(ctx);
+ if (ctx->text.sink != NULL)
+ XtHeight(ctx) += XawTextSinkMaxHeight(ctx->text.sink, 1);
+ }
+
+ if (ctx->text.scroll_vert == XawtextScrollAlways)
+ CreateVScrollBar(ctx);
+ if (ctx->text.scroll_horiz == XawtextScrollAlways)
+ CreateHScrollBar(ctx);
+
+#ifndef OLDXAW
+ if (ctx->text.left_column < 0)
+ ctx->text.left_column = 0;
+ if (ctx->text.right_column < 0)
+ ctx->text.right_column = 0;
+#endif
+}
+
+static void
+XawTextRealize(Widget w, XtValueMask *mask, XSetWindowAttributes *attr)
+{
+ TextWidget ctx = (TextWidget)w;
+
+ (*textClassRec.core_class.superclass->core_class.realize)(w, mask, attr);
+
+ if (ctx->text.hbar != NULL) {
+ XtRealizeWidget(ctx->text.hbar);
+ XtMapWidget(ctx->text.hbar);
+ }
+
+ if (ctx->text.vbar != NULL) {
+ XtRealizeWidget(ctx->text.vbar);
+ XtMapWidget(ctx->text.vbar);
+ }
+
+ _XawTextBuildLineTable(ctx, ctx->text.lt.top, True);
+
+#ifndef OLDXAW
+ _XawTextSetLineAndColumnNumber(ctx, True);
+#endif
+}
+
+/* Utility routines for support of Text */
+static void
+_CreateCutBuffers(Display *d)
+{
+ static struct _DisplayRec {
+ struct _DisplayRec *next;
+ Display *dpy;
+ } *dpy_list = NULL;
+ struct _DisplayRec *dpy_ptr;
+
+ for (dpy_ptr = dpy_list; dpy_ptr != NULL; dpy_ptr = dpy_ptr->next)
+ if (dpy_ptr->dpy == d)
+ return;
+
+ dpy_ptr = XtNew(struct _DisplayRec);
+ dpy_ptr->next = dpy_list;
+ dpy_ptr->dpy = d;
+ dpy_list = dpy_ptr;
+
+#define Create(buffer) \
+ XChangeProperty(d, RootWindow(d, 0), buffer, XA_STRING, 8, \
+ PropModeAppend, NULL, 0);
+
+ Create(XA_CUT_BUFFER0);
+ Create(XA_CUT_BUFFER1);
+ Create(XA_CUT_BUFFER2);
+ Create(XA_CUT_BUFFER3);
+ Create(XA_CUT_BUFFER4);
+ Create(XA_CUT_BUFFER5);
+ Create(XA_CUT_BUFFER6);
+ Create(XA_CUT_BUFFER7);
+
+#undef Create
+}
+
+/*
+ * Procedure to manage insert cursor visibility for editable text. It uses
+ * the value of ctx->insertPos and an implicit argument. In the event that
+ * position is immediately preceded by an eol graphic, then the insert cursor
+ * is displayed at the beginning of the next line.
+ */
+static void
+InsertCursor(Widget w, XawTextInsertState state)
+{
+ TextWidget ctx = (TextWidget)w;
+ int x, y;
+ int line;
+
+ if (ctx->text.lt.lines < 1)
+ return;
+
+ if (ctx->text.display_caret &&
+ LineAndXYForPosition(ctx, ctx->text.insertPos, &line, &x, &y)) {
+ if (line < ctx->text.lt.lines)
+ y += (ctx->text.lt.info[line + 1].y - ctx->text.lt.info[line].y) + 1;
+ else
+ y += (ctx->text.lt.info[line].y - ctx->text.lt.info[line - 1].y) + 1;
+
+ XawTextSinkInsertCursor(ctx->text.sink, x, y, state);
+ }
+
+ /* Keep Input Method up to speed */
+ if (ctx->simple.international) {
+ Arg list[1];
+
+ XtSetArg(list[0], XtNinsertPosition, ctx->text.insertPos);
+ _XawImSetValues(w, list, 1);
+ }
+}
+
+/*
+ * Procedure to register a span of text that is no longer valid on the display
+ * It is used to avoid a number of small, and potentially overlapping, screen
+ * updates.
+*/
+void
+_XawTextNeedsUpdating(TextWidget ctx,
+ XawTextPosition left, XawTextPosition right)
+{
+ XmuSegment segment;
+
+ if (left >= right)
+ return;
+
+ segment.x1 = (int)left;
+ segment.x2 = (int)right;
+ (void)XmuScanlineOrSegment(ctx->text.update, &segment);
+}
+
+/*
+ * Procedure to read a span of text in Ascii form. This is purely a hack and
+ * we probably need to add a function to sources to provide this functionality.
+ * [note: this is really a private procedure but is used in multiple modules].
+ */
+char *
+_XawTextGetText(TextWidget ctx, XawTextPosition left, XawTextPosition right)
+{
+ char *result, *tempResult;
+ XawTextBlock text;
+ int bytes;
+
+ if (XawTextFormat(ctx, XawFmt8Bit))
+ bytes = sizeof(unsigned char);
+ else if (XawTextFormat(ctx, XawFmtWide))
+ bytes = sizeof(wchar_t);
+ else /* if there is another fomat, add here */
+ bytes = 1;
+
+ /* leave space for ZERO */
+ tempResult = result = XtMalloc((unsigned)(right - left + ONE) * bytes);
+
+ while (left < right) {
+ left = SrcRead(ctx->text.source, left, &text, (int)(right - left));
+ if (!text.length)
+ break;
+ memmove(tempResult, text.ptr, (unsigned)(text.length * bytes));
+ tempResult += text.length * bytes;
+ }
+
+ if (bytes == sizeof(wchar_t))
+ *((wchar_t*)tempResult) = (wchar_t)0;
+ else
+ *tempResult = '\0';
+
+ return (result);
+}
+
+/* Like _XawTextGetText, but enforces ICCCM STRING type encoding. This
+ * routine is currently used to put just the ASCII chars in the selection
+ * into a cut buffer.
+ */
+char *
+_XawTextGetSTRING(TextWidget ctx, XawTextPosition left, XawTextPosition right)
+{
+ unsigned char *s;
+ unsigned char c;
+ long i, j, n;
+ wchar_t *ws, wc;
+
+ /* allow ESC in accordance with ICCCM */
+ if (XawTextFormat(ctx, XawFmtWide)) {
+ MultiSinkObject sink = (MultiSinkObject)ctx->text.sink;
+ ws = (wchar_t *)_XawTextGetText(ctx, left, right);
+ n = wcslen(ws);
+ for (j = 0, i = 0; j < n; j++) {
+ wc = ws[j];
+ if (XwcTextEscapement (sink->multi_sink.fontset, &wc, 1)
+ || (wc == _Xaw_atowc(XawTAB)) || (wc == _Xaw_atowc(XawLF))
+ || (wc == _Xaw_atowc(XawESC)))
+ ws[i++] = wc;
+ }
+ ws[i] = (wchar_t)0;
+ return ((char *)ws);
+ }
+ else {
+ s = (unsigned char *)_XawTextGetText(ctx, left, right);
+ /* only HT and NL control chars are allowed, strip out others */
+ n = strlen((char *)s);
+ i = 0;
+ for (j = 0; j < n; j++) {
+ c = s[j];
+ if (((c >= 0x20) && c <= 0x7f)
+ ||(c >= 0xa0) || (c == XawTAB) || (c == XawLF)
+ || (c == XawESC)) {
+ s[i] = c;
+ i++;
+ }
+ }
+ s[i] = 0;
+
+ return ((char *)s);
+ }
+}
+
+/*
+ * This routine maps an x and y position in a window that is displaying text
+ * into the corresponding position in the source.
+ */
+static XawTextPosition
+PositionForXY(TextWidget ctx, int x, int y)
+{
+ int fromx, line, width, height;
+ XawTextPosition position;
+
+ if (ctx->text.lt.lines == 0)
+ return (0);
+
+ for (line = 0; line < ctx->text.lt.lines - 1; line++) {
+ if (y <= ctx->text.lt.info[line + 1].y)
+ break;
+ }
+ position = ctx->text.lt.info[line].position;
+ if (position >= ctx->text.lastPos)
+ return (ctx->text.lastPos);
+ fromx = ctx->text.left_margin;
+ XawTextSinkFindPosition(ctx->text.sink, position, fromx, x - fromx,
+ False, &position, &width, &height);
+
+ if (position > ctx->text.lastPos)
+ return (ctx->text.lastPos);
+
+ if (position >= ctx->text.lt.info[line + 1].position)
+ position = SrcScan(ctx->text.source, ctx->text.lt.info[line + 1].position,
+ XawstPositions, XawsdLeft, 1, True);
+
+ return (position);
+}
+
+/*
+ * This routine maps a source position in to the corresponding line number
+ * of the text that is displayed in the window.
+ */
+static int
+LineForPosition(TextWidget ctx, XawTextPosition position)
+{
+ int line;
+
+ for (line = 0; line < ctx->text.lt.lines; line++)
+ if (position < ctx->text.lt.info[line + 1].position)
+ break;
+
+ return (line);
+}
+
+/*
+ * This routine maps a source position into the corresponding line number
+ * and the x, y coordinates of the text that is displayed in the window.
+ */
+static Bool
+LineAndXYForPosition(TextWidget ctx, XawTextPosition pos,
+ int *line, int *x, int *y)
+{
+ XawTextPosition linePos, endPos;
+ Boolean visible;
+ int realW, realH;
+
+ *line = 0;
+ *x = ctx->text.left_margin;
+ *y = ctx->text.margin.top + 1;
+ if ((visible = IsPositionVisible(ctx, pos)) != False) {
+ *line = LineForPosition(ctx, pos);
+ *y = ctx->text.lt.info[*line].y;
+ linePos = ctx->text.lt.info[*line].position;
+ XawTextSinkFindDistance(ctx->text.sink, linePos,
+ *x, pos, &realW, &endPos, &realH);
+ *x += realW;
+ }
+
+ return (visible);
+}
+
+/*
+ * This routine builds a line table. It does this by starting at the
+ * specified position and measuring text to determine the staring position
+ * of each line to be displayed. It also determines and saves in the
+ * linetable all the required metrics for displaying a given line (e.g.
+ * x offset, y offset, line length, etc.).
+ */
+void
+_XawTextBuildLineTable(TextWidget ctx, XawTextPosition position,
+ _XtBoolean force_rebuild)
+{
+ Dimension height = 0;
+ int lines = 0;
+ Cardinal size;
+
+ if ((int)XtHeight(ctx) > VMargins(ctx)) {
+ height = XtHeight(ctx) - VMargins(ctx);
+ lines = XawTextSinkMaxLines(ctx->text.sink, height);
+ }
+ size = sizeof(XawTextLineTableEntry) * (lines + 1);
+
+ if (lines != ctx->text.lt.lines || ctx->text.lt.info == NULL) {
+ ctx->text.lt.info = (XawTextLineTableEntry *)
+ XtRealloc((char *)ctx->text.lt.info, size);
+ ctx->text.lt.lines = lines;
+ force_rebuild = True;
+ }
+
+ if (force_rebuild) {
+ (void)bzero((char *)ctx->text.lt.info, size);
+ /* force a text update in the first text line if it is visible */
+ ctx->text.lt.info[0].position = (XawTextPosition)-1;
+ }
+ if (position != ctx->text.lt.info[0].position) {
+ (void)_BuildLineTable(ctx, position, 0);
+ ctx->text.clear_to_eol = True;
+ }
+}
+
+/*
+ * We may need to resize the line table here, since there maybe lines with
+ * different fonts (that can be shorter or taller than the default one)
+ */
+static XawTextPosition
+_BuildLineTable(TextWidget ctx, XawTextPosition position, int line)
+{
+ XawTextLineTableEntry *lt = ctx->text.lt.info + line;
+ XawTextPosition end, update_from = -1;
+ Position y;
+ int wwidth, width, height;
+#ifndef OLDXAW
+ Widget src = ctx->text.source;
+#endif
+ int max_y = (int)XtHeight(ctx) - (int)ctx->text.margin.bottom;
+
+ if (ctx->text.wrap == XawtextWrapNever)
+ wwidth = 0x7fffffff;
+ else
+ wwidth = GetMaxTextWidth(ctx);
+
+ /* XXX y may change, due to font size changes. See later */
+ y = line == 0 ? ctx->text.margin.top : lt->y;
+
+#ifndef OLDXAW
+ if (ctx->text.lt.base_line < 0) {
+ if (line == 0)
+ ctx->text.lt.top = position;
+ }
+ else if (line == 0) {
+ XawTextPosition pos = ctx->text.lt.top;
+ int base_line = ctx->text.lt.base_line;
+
+ if (position == 0)
+ base_line = 1;
+ else if (ctx->text.lt.base_line == 0 ||
+ ctx->text.source_changed == SRC_CHANGE_OVERLAP) {
+ pos = 0;
+ base_line = 1;
+
+ while (pos < position) {
+ pos = SrcScan(src, pos, XawstEOL, XawsdRight, 1, True);
+ if (pos <= position) {
+ ++base_line;
+ if (pos == ctx->text.lastPos) {
+ base_line -= !_XawTextSourceNewLineAtEOF(src);
+ break;
+ }
+ }
+ }
+ }
+ else if (ctx->text.wrap == XawtextWrapNever
+ && IsPositionVisible(ctx, position))
+ base_line += LineForPosition(ctx, position);
+ else if (pos < position) {
+ while (pos < position) {
+ pos = SrcScan(src, pos, XawstEOL, XawsdRight, 1, True);
+ if (pos <= position) {
+ ++base_line;
+ if (pos == ctx->text.lastPos) {
+ base_line -= !_XawTextSourceNewLineAtEOF(src);
+ break;
+ }
+ }
+ }
+ }
+ else if (pos > position) {
+ while (pos > position) {
+ pos = SrcScan(src, pos, XawstEOL, XawsdLeft, 1, False);
+ if (--pos >= position)
+ --base_line;
+ }
+ }
+
+ ctx->text.lt.top = position;
+ ctx->text.lt.base_line = base_line;
+ }
+#else
+ if (line == 0)
+ ctx->text.lt.top = position;
+#endif
+
+ /* CONSTCOND */
+ while (True) {
+ XawTextSinkFindPosition(ctx->text.sink, position, ctx->text.left_margin,
+ wwidth, ctx->text.wrap == XawtextWrapWord,
+ &end, &width, &height);
+
+ if (lt->position != position) {
+ _XawTextNeedsUpdating(ctx, position,
+ end <= position ? position + 1 : end);
+ ctx->text.clear_to_eol = True;
+ lt->position = position;
+ }
+ if (lt->y != y) {
+ if (update_from < 0)
+ update_from = line == 0 ?
+ ctx->text.lt.info[0].position :
+ ctx->text.lt.info[line - 1].position;
+ lt->y = y;
+ ctx->text.clear_to_eol = True;
+ }
+ if (lt->textWidth != width) {
+ if (lt->textWidth > width)
+ ctx->text.clear_to_eol = True;
+ lt->textWidth = width;
+ }
+ y += height;
+
+ if (end > ctx->text.lastPos) {
+ position = end;
+ ctx->text.clear_to_eol = True;
+ _XawTextNeedsUpdating(ctx, end, end + ctx->text.lt.lines - line);
+ while (line++ < ctx->text.lt.lines) {
+ if (line > 1 && y > max_y) {
+ ctx->text.lt.lines = line - 1;
+ break;
+ }
+ ++lt;
+ if (lt->y != y) {
+ if (update_from < 0)
+ update_from = line < 2 ?
+ ctx->text.lt.info[0].position :
+ ctx->text.lt.info[line - 2].position;
+ lt->y = y;
+ }
+ lt->position = ++position;
+ lt->textWidth = 0;
+ y += height;
+ }
+ if (update_from >= 0)
+ _XawTextNeedsUpdating(ctx, update_from,
+ ctx->text.lt.info[ctx->text.lt.lines].position);
+ _XawTextSetScrollBars(ctx);
+
+ return (ctx->text.lastPos);
+ }
+
+ if (line && y > max_y)
+ /* will return in the next loop */
+ ctx->text.lt.lines = line;
+
+ if (++line > ctx->text.lt.lines && y < max_y) {
+ /* grow the line table */
+ ctx->text.lt.info = (XawTextLineTableEntry *)
+ XtRealloc((char *)ctx->text.lt.info,
+ sizeof(XawTextLineTableEntry) * (line + 1));
+ lt = ctx->text.lt.info + line;
+ bzero(lt, sizeof(XawTextLineTableEntry));
+ ++ctx->text.lt.lines;
+ }
+ else
+ ++lt;
+ if (position == end)
+ ++position;
+ else
+ position = end;
+
+ if (line > ctx->text.lt.lines) {
+ if (update_from >= 0)
+ _XawTextNeedsUpdating(ctx, update_from,
+ ctx->text.lt.info[ctx->text.lt.lines].position);
+ _XawTextSetScrollBars(ctx);
+
+ return (position);
+ }
+ }
+ /*NOTREACHED*/
+}
+
+/*
+ * Function:
+ * GetWidestLine
+ *
+ * Parameters:
+ * ctx - text widget
+ *
+ * Description:
+ * Returns the width (in pixels) of the widest line that
+ * is currently visable.
+ *
+ * Returns:
+ * The width of the widest line
+ */
+static unsigned int
+GetWidestLine(TextWidget ctx)
+{
+ int i;
+ unsigned int widest;
+ XawTextLineTablePtr lt = &(ctx->text.lt);
+
+ for (i = 0, widest = 0; i < lt->lines; i++)
+ if (widest < lt->info[i].textWidth)
+ widest = lt->info[i].textWidth;
+
+ return (widest);
+}
+
+/*
+ * This routine is used by Text to notify an associated scrollbar of the
+ * correct metrics (position and shown fraction) for the text being currently
+ * displayed in the window.
+ */
+void
+_XawTextSetScrollBars(TextWidget ctx)
+{
+ float first, last, denom, widest;
+
+ if (ctx->text.scroll_vert == XawtextScrollAlways) {
+ if (ctx->text.lastPos == 0)
+ first = 0.0;
+ else
+ first = ctx->text.lt.top / (float)ctx->text.lastPos;
+
+ if (ctx->text.lt.info[ctx->text.lt.lines].position < ctx->text.lastPos)
+ last = ctx->text.lt.info[ctx->text.lt.lines].position /
+ (float)ctx->text.lastPos;
+ else
+ last = 1.0;
+
+ XawScrollbarSetThumb(ctx->text.vbar, first, last - first);
+ }
+
+ if (ctx->text.scroll_horiz == XawtextScrollAlways) {
+ denom = GetWidestLine(ctx);
+ if (denom <= 0)
+ denom = (int)XtWidth(ctx) - RHMargins(ctx);
+ if (denom <= 0)
+ denom = 1;
+ widest = ((int)XtWidth(ctx) - RHMargins(ctx)) / denom;
+ first = ctx->text.r_margin.left - ctx->text.left_margin;
+ first /= denom;
+
+ XawScrollbarSetThumb(ctx->text.hbar, first, widest);
+ }
+}
+
+static void
+DoCopyArea(TextWidget ctx, int src_x, int src_y,
+ unsigned int width, unsigned int height, int dst_x, int dst_y)
+{
+ int x1, y1, x2, y2;
+
+ x1 = ctx->text.r_margin.left;
+ y1 = ctx->text.r_margin.top;
+ x2 = XtWidth(ctx) - ctx->text.r_margin.right;
+ y2 = XtHeight(ctx) - ctx->text.r_margin.bottom;
+
+ if (x1 >= x2 || y1 >= y2)
+ return;
+
+ src_x = XawMax(x1, XawMin(src_x, x2));
+ src_y = XawMax(y1, XawMin(src_y, y2));
+ dst_x = XawMax(x1, XawMin(dst_x, x2));
+ dst_y = XawMax(y1, XawMin(dst_y, y2));
+ width = XawMax(0, XawMin(x2 - dst_x, (int)width));
+ height = XawMax(0, XawMin(y2 - dst_y, (int)height));
+
+ XCopyArea(XtDisplay(ctx), XtWindow(ctx), XtWindow(ctx), ctx->text.gc,
+ src_x, src_y, width, height, dst_x, dst_y);
+}
+
+/*
+ * Function:
+ * XawTextScroll
+ *
+ * Parameters:
+ * ctx - text widget
+ * vlines - number of lines to scroll vertically
+ * hpixels - number of pixels to scroll horizontally
+ *
+ * Description:
+ * Generic function for scrolling the text window.
+ * Allows vertical and horizontal scroll at the same time.
+ */
+void
+XawTextScroll(TextWidget ctx, int vlines, int hpixels)
+{
+ XawTextPosition top, tmp, update_from, update_to;
+ XawTextLineTable *lt;
+ Arg arglist[1];
+ int y0, y1, y2, count, dim, wwidth, lines = ctx->text.lt.lines;
+ int vwidth, vheight; /* visible width and height */
+ Bool scroll;
+
+ vwidth = (int)XtWidth(ctx) - RHMargins(ctx);
+ vheight = (int)XtHeight(ctx) - RVMargins(ctx);
+ lt = &ctx->text.lt;
+
+ if (!lt || vwidth <= 0 || vheight <= 0)
+ return;
+
+ if ((scroll = ctx->core.background_pixmap == XtUnspecifiedPixmap) == True) {
+ dim = lt->info[1].y - lt->info[0].y;
+ for (count = 1; count < lt->lines - 1; count++)
+ if (lt->info[count + 1].y - lt->info[count].y != dim) {
+ scroll = False;
+ break;
+ }
+ }
+
+ wwidth = GetMaxTextWidth(ctx);
+
+ /*
+ * Do the horizontall scrolling
+ */
+ if (hpixels < 0 && ctx->text.left_margin - hpixels > ctx->text.r_margin.left)
+ hpixels = ctx->text.left_margin - ctx->text.r_margin.left;
+ ctx->text.left_margin -= hpixels;
+
+ update_from = lt->top; /* remember the old value */
+ /*
+ * Checks the requested number of lines and calculates the top
+ * of the line table
+ */
+ if (vlines < 0) { /* VScroll Up */
+ if (IsPositionVisible(ctx, 0))
+ vlines = 0;
+ else if (ctx->text.wrap != XawtextWrapNever) {
+ XawTextPosition end;
+ int n_lines = 0;
+
+ count = -vlines;
+ end = lt->top;
+ while (n_lines < count) {
+ top = SrcScan(ctx->text.source, end, XawstEOL,
+ XawsdLeft, 2, False);
+ n_lines += CountLines(ctx, top, end);
+ end = top;
+ }
+
+ while (count++ < n_lines) {
+ tmp = top;
+ XawTextSinkFindPosition(ctx->text.sink, top,
+ ctx->text.left_margin,
+ wwidth,ctx->text.wrap == XawtextWrapWord,
+ &top, &dim, &dim);
+ if (tmp == top)
+ ++top;
+ }
+ }
+ else
+ top = SrcScan(ctx->text.source, lt->top, XawstEOL,
+ XawsdLeft, -vlines + 1, False);
+ if (-vlines >= ctx->text.lt.lines)
+ scroll = False;
+ }
+ else if (vlines > 0) { /* VScroll Down */
+ if (LineForPosition(ctx, ctx->text.lastPos) == 0)
+ vlines = 0;
+ if (vlines < lt->lines)
+ top = XawMin(lt->info[vlines].position, ctx->text.lastPos);
+ else if (ctx->text.wrap == XawtextWrapNever)
+ top = SrcScan(ctx->text.source,
+ SrcScan(ctx->text.source, lt->top,
+ XawstEOL, XawsdRight, vlines,
+ True),
+ XawstEOL, XawsdLeft, 1, False);
+ else {
+ top = lt->top;
+ count = 0;
+ while (count++ < vlines) {
+ tmp = top;
+ XawTextSinkFindPosition(ctx->text.sink, top,
+ ctx->text.left_margin,
+ wwidth, ctx->text.wrap == XawtextWrapWord,
+ &top, &dim, &dim);
+ if (tmp == top)
+ ++top;
+ }
+ }
+ if (vlines >= ctx->text.lt.lines
+ || lt->info[vlines].position >= ctx->text.lastPos)
+ scroll = False;
+ }
+
+ if (!vlines) {
+ if (hpixels) {
+ ClearWindow(ctx);
+ ctx->text.clear_to_eol = True;
+ }
+ _XawTextSetScrollBars(ctx);
+ return;
+ }
+
+ /* Flushes any pending updates. Normally, there may be a call to
+ * XawTextUnsetSelection not yet updated.
+ */
+ if (!hpixels && scroll) {
+ ctx->text.clear_to_eol = True;
+ FlushUpdate(ctx);
+ }
+
+ /*
+ * Rebuild the line table, doing the vertical scroll
+ */
+ (void)_BuildLineTable(ctx, top, 0);
+ lt = &ctx->text.lt;
+ if (scroll) {
+ for (count = 0; count < lt->lines - 1; count++)
+ if (lt->info[count + 1].y - lt->info[count].y != dim) {
+ scroll = False;
+ break;
+ }
+ }
+
+ XtSetArg(arglist[0], XtNinsertPosition, lt->top + lt->lines);
+ _XawImSetValues((Widget)ctx, arglist, 1);
+
+ if (hpixels || !scroll || lines != lt->lines)
+ return;
+
+ /* _BuildLineTable updates everything if the top position changes.
+ * It is not required here.
+ */
+ (void)XmuScanlineXor(ctx->text.update, ctx->text.update);
+ if (vlines < 0 && IsPositionVisible(ctx, 0))
+ vlines = -LineForPosition(ctx, update_from);
+
+ y0 = ctx->text.r_margin.top;
+ if (vlines < 0) {
+ update_from = lt->top;
+ update_to = lt->info[-vlines + 1].position - 1;
+ y1 = lt->info[lt->lines + vlines].y;
+ y2 = lt->info[-vlines].y;
+ DoCopyArea(ctx, ctx->text.r_margin.left, y0, vwidth,
+ y1 - y0,
+ ctx->text.r_margin.left, y2);
+ }
+ else {
+ update_from = lt->info[lt->lines - vlines].position;
+ update_to = lt->info[lt->lines].position;
+ y1 = lt->info[lt->lines - vlines].y;
+ y2 = lt->info[vlines].y;
+ DoCopyArea(ctx, ctx->text.r_margin.left, y2,
+ vwidth, lt->info[lt->lines].y - y2,
+ ctx->text.r_margin.left, y0);
+ }
+ _XawTextNeedsUpdating(ctx, update_from, update_to);
+ ctx->text.clear_to_eol = True;
+}
+
+/*
+ * The routine will scroll the displayed text by lines. If the arg is
+ * positive, move up; otherwise, move down. [note: this is really a private
+ * procedure but is used in multiple modules].
+ */
+void
+_XawTextVScroll(TextWidget ctx, int n)
+{
+ XawTextScroll(ctx, n, 0);
+}
+
+/*ARGSUSED*/
+static void
+HScroll(Widget w, XtPointer closure, XtPointer callData)
+{
+ TextWidget ctx = (TextWidget)closure;
+ long pixels = (long)callData;
+
+ if (pixels > 0) {
+ long max;
+
+ max = (int)GetWidestLine(ctx) + ctx->text.left_margin -
+ ctx->text.r_margin.left;
+ max = XawMax(0, max);
+ pixels = XawMin(pixels, max);
+ }
+
+ if (pixels) {
+ _XawTextPrepareToUpdate(ctx);
+ XawTextScroll(ctx, 0, pixels);
+ _XawTextExecuteUpdate(ctx);
+ }
+}
+
+/*ARGSUSED*/
+static void
+HJump(Widget w, XtPointer closure, XtPointer callData)
+{
+ TextWidget ctx = (TextWidget)closure;
+ float percent = *(float *)callData;
+ long pixels;
+
+ pixels = ctx->text.left_margin -
+ (ctx->text.r_margin.left - (int)(percent * GetWidestLine(ctx)));
+
+ HScroll(w, (XtPointer)ctx, (XtPointer)pixels);
+}
+
+/*
+ * Function:
+ * UpdateTextInLine
+ *
+ * Parameters:
+ * ctx - text widget
+ * line - line to update
+ * x1 - left pixel
+ * x2 - right pixel
+ *
+ * Description:
+ * Updates the text in the given line and pixel interval
+ */
+static void
+UpdateTextInLine(TextWidget ctx, int line, int x1, int x2)
+{
+ XawTextLineTableEntry *lt = ctx->text.lt.info + line;
+ XawTextPosition left, right;
+ int from_x, width, height;
+
+ if (lt->position >= ctx->text.lastPos
+ || ctx->text.left_margin > x2
+ || (int)lt->textWidth + ctx->text.left_margin < x1) {
+ /* Mark line to be cleared */
+ if (ctx->text.clear_to_eol)
+ _XawTextNeedsUpdating(ctx, lt->position, lt->position + 1);
+ return;
+ }
+
+ from_x = ctx->text.left_margin;
+ XawTextSinkFindPosition(ctx->text.sink, lt->position,
+ from_x, x1 - from_x,
+ False, &left, &width, &height);
+ if (line == ctx->text.lt.lines)
+ right = -1;
+ else if (x2 >= lt->textWidth - from_x)
+ right = lt[1].position - 1;
+ else {
+ from_x += width;
+ XawTextSinkFindPosition(ctx->text.sink, left,
+ from_x, x2 - from_x,
+ False, &right, &width, &height);
+ }
+
+ if ((right < 0) || (right + 1 <= lt[1].position))
+ ++right;
+
+ /* Mark text interval to be repainted */
+ _XawTextNeedsUpdating(ctx, left, right);
+}
+
+/*
+ * The routine will scroll the displayed text by pixels. If the calldata is
+ * positive, move up; otherwise, move down.
+ */
+/*ARGSUSED*/
+static void
+VScroll(Widget w, XtPointer closure, XtPointer callData)
+{
+ TextWidget ctx = (TextWidget)closure;
+ long height, lines = (long)callData;
+
+ height = XtHeight(ctx) - VMargins(ctx);
+ if (height < 1)
+ height = 1;
+ lines = (lines * ctx->text.lt.lines) / height;
+ _XawTextPrepareToUpdate(ctx);
+ XawTextScroll(ctx, lines, 0);
+ _XawTextExecuteUpdate(ctx);
+}
+
+/*ARGSUSED*/
+static void
+VJump(Widget w, XtPointer closure, XtPointer callData)
+{
+ float percent = *(float *)callData;
+ TextWidget ctx = (TextWidget)closure;
+ XawTextPosition top, last, position, tmp;
+ XawTextLineTable *lt = &(ctx->text.lt);
+ int dim, vlines = 0, wwidth = GetMaxTextWidth(ctx);
+ Bool scroll = True;
+
+ position = percent * ctx->text.lastPos;
+ top = lt->top;
+
+ if (!lt->lines || (position >= lt->top && position < lt->info[1].position)) {
+ _XawTextSetScrollBars(ctx);
+ return;
+ }
+
+#ifndef OLDXAW
+ ctx->text.lt.base_line = -1;
+#endif
+
+ if (position > lt->top) { /* VScroll Up */
+ if (position > lt->top && position < lt->info[lt->lines].position)
+ vlines = LineForPosition(ctx, position);
+ else {
+ scroll = False;
+ top = SrcScan(ctx->text.source, position, XawstEOL,
+ XawsdLeft, 1, False);
+ if (ctx->text.wrap != XawtextWrapNever) {
+ last = top;
+ while (last < position) {
+ tmp = last;
+ XawTextSinkFindPosition(ctx->text.sink, last,
+ ctx->text.left_margin, wwidth,
+ ctx->text.wrap == XawtextWrapWord,
+ &last, &dim, &dim);
+ if (last == tmp)
+ ++last;
+ if (last < position)
+ top = last;
+ }
+ }
+ }
+ }
+ else { /* VScroll Down */
+ /*
+ * Calculates the number of lines
+ */
+ while (top > position) {
+ last = top;
+ top = SrcScan(ctx->text.source, top, XawstEOL,
+ XawsdLeft, 2, False);
+ vlines -= CountLines(ctx, top, last);
+ if (-vlines >= ctx->text.lt.lines) {
+ scroll = False;
+ top = SrcScan(ctx->text.source, position, XawstEOL,
+ XawsdLeft, 1, False);
+ break;
+ }
+ }
+ /*
+ * Normalize
+ */
+ if (ctx->text.wrap != XawtextWrapNever) {
+ last = top;
+ while (last < position) {
+ tmp = last;
+ XawTextSinkFindPosition(ctx->text.sink, last,
+ ctx->text.left_margin,
+ wwidth,
+ ctx->text.wrap == XawtextWrapWord,
+ &last, &dim, &dim);
+ if (last == tmp)
+ ++last;
+ if (last < position)
+ top = last;
+ ++vlines;
+ }
+ }
+ }
+
+ if (vlines || !scroll) {
+ _XawTextPrepareToUpdate(ctx);
+ if (scroll)
+ XawTextScroll(ctx, vlines, 0);
+ else
+ _BuildLineTable(ctx, top, 0);
+ _XawTextExecuteUpdate(ctx);
+ }
+}
+
+static Bool
+MatchSelection(Atom selection, XawTextSelection *s)
+{
+ Atom *match;
+ int count;
+
+ for (count = 0, match = s->selections; count < s->atom_count;
+ match++, count++)
+ if (*match == selection)
+ return (True);
+
+ return (False);
+}
+
+static Boolean
+TextConvertSelection(Widget w, Atom *selection, Atom *target, Atom *type,
+ XtPointer *value, unsigned long *length, int *format)
+{
+ Display *d = XtDisplay(w);
+ TextWidget ctx = (TextWidget)w;
+ Widget src = ctx->text.source;
+ XawTextEditType edit_mode;
+ Arg args[1];
+ XawTextSelectionSalt *salt = NULL;
+ XawTextSelection *s;
+
+ if (*target == XA_TARGETS(d)) {
+ Atom *targetP, *std_targets;
+ unsigned long std_length;
+
+ if (SrcCvtSel(src, selection, target, type, value, length, format))
+ return (True);
+
+ XtSetArg(args[0], XtNeditType, &edit_mode);
+ XtGetValues(src, args, ONE);
+
+ XmuConvertStandardSelection(w, ctx->text.time, selection,
+ target, type, (XPointer*)&std_targets,
+ &std_length, format);
+
+ *length = 7 + (edit_mode == XawtextEdit) + std_length;
+ *value = XtMalloc((unsigned)sizeof(Atom)*(*length));
+ targetP = *(Atom**)value;
+ *targetP++ = XA_STRING;
+ *targetP++ = XA_TEXT(d);
+ *targetP++ = XA_UTF8_STRING(d);
+ *targetP++ = XA_COMPOUND_TEXT(d);
+ *targetP++ = XA_LENGTH(d);
+ *targetP++ = XA_LIST_LENGTH(d);
+ *targetP++ = XA_CHARACTER_POSITION(d);
+ if (edit_mode == XawtextEdit) {
+ *targetP++ = XA_DELETE(d);
+ }
+ (void)memmove((char*)targetP, (char*)std_targets,
+ sizeof(Atom) * std_length);
+ XtFree((char*)std_targets);
+ *type = XA_ATOM;
+ *format = 32;
+ return (True);
+ }
+
+ if (SrcCvtSel(src, selection, target, type, value, length, format))
+ return (True);
+
+ if (MatchSelection(*selection, &ctx->text.s))
+ s = &ctx->text.s;
+ else {
+ for (salt = ctx->text.salt; salt; salt = salt->next)
+ if (MatchSelection(*selection, &salt->s))
+ break;
+ if (!salt)
+ return (False);
+ s = &salt->s;
+ }
+ if (*target == XA_STRING
+ || *target == XA_TEXT(d)
+ || *target == XA_UTF8_STRING(d)
+ || *target == XA_COMPOUND_TEXT(d)) {
+ if (*target == XA_TEXT(d)) {
+ if (XawTextFormat(ctx, XawFmtWide))
+ *type = XA_COMPOUND_TEXT(d);
+ else
+ *type = XA_STRING;
+ }
+ else
+ *type = *target;
+ /*
+ * If salt is True, the salt->contents stores CT string,
+ * its length is measured in bytes.
+ * Refer to _XawTextSaltAwaySelection().
+ *
+ * by Li Yuhong, Mar. 20, 1991.
+ */
+ if (!salt) {
+ *value = _XawTextGetSTRING(ctx, s->left, s->right);
+ if (XawTextFormat(ctx, XawFmtWide)) {
+ XTextProperty textprop;
+ if (XwcTextListToTextProperty(d, (wchar_t **)value, 1,
+ XCompoundTextStyle, &textprop)
+ < Success) {
+ XtFree((char *)*value);
+ return (False);
+ }
+ XtFree((char *)*value);
+ *value = (XtPointer)textprop.value;
+ *length = textprop.nitems;
+ }
+ else
+ *length = strlen((char *)*value);
+ }
+ else {
+ *value = XtMalloc((salt->length + 1) * sizeof(unsigned char));
+ strcpy ((char *)*value, salt->contents);
+ *length = salt->length;
+ }
+ /* Got *value,*length, now in COMPOUND_TEXT format. */
+ if (XawTextFormat(ctx, XawFmtWide) && *type == XA_STRING) {
+ XTextProperty textprop;
+ wchar_t **wlist;
+ int count;
+
+ textprop.encoding = XA_COMPOUND_TEXT(d);
+ textprop.value = (unsigned char *)*value;
+ textprop.nitems = strlen(*value);
+ textprop.format = 8;
+ if (XwcTextPropertyToTextList(d, &textprop, &wlist, &count)
+ < Success
+ || count < 1) {
+ XtFree((char *)*value);
+ return (False);
+ }
+ XtFree((char *)*value);
+ if (XwcTextListToTextProperty(d, wlist, 1, XStringStyle, &textprop)
+ < Success) {
+ XwcFreeStringList((wchar_t**) wlist);
+ return (False);
+ }
+ *value = (XtPointer)textprop.value;
+ *length = textprop.nitems;
+ XwcFreeStringList(wlist);
+ } else if (*type == XA_UTF8_STRING(d)) {
+ XTextProperty textprop;
+ char **list;
+ int count;
+
+ textprop.encoding = XA_COMPOUND_TEXT(d);
+ textprop.value = (unsigned char *)*value;
+ textprop.nitems = strlen(*value);
+ textprop.format = 8;
+ if (Xutf8TextPropertyToTextList(d, &textprop, &list, &count)
+ < Success
+ || count < 1) {
+ XtFree((char *)*value);
+ return (False);
+ }
+ XtFree((char *)*value);
+ *value = *list;
+ *length = strlen(*list);
+ XFree(list);
+ }
+ *format = 8;
+ return (True);
+ }
+
+ if ((*target == XA_LIST_LENGTH(d)) || (*target == XA_LENGTH(d))) {
+ long * temp;
+
+ temp = (long *)XtMalloc((unsigned)sizeof(long));
+ if (*target == XA_LIST_LENGTH(d))
+ *temp = 1L;
+ else /* *target == XA_LENGTH(d) */
+ *temp = (long) (s->right - s->left);
+
+ *value = (XPointer)temp;
+ *type = XA_INTEGER;
+ *length = 1L;
+ *format = 32;
+ return (True);
+ }
+
+ if (*target == XA_CHARACTER_POSITION(d)) {
+ long * temp;
+
+ temp = (long *)XtMalloc((unsigned)(2 * sizeof(long)));
+ temp[0] = (long)(s->left + 1);
+ temp[1] = s->right;
+ *value = (XPointer)temp;
+ *type = XA_SPAN(d);
+ *length = 2L;
+ *format = 32;
+ return (True);
+ }
+
+ if (*target == XA_DELETE(d)) {
+ if (!salt)
+ _XawTextZapSelection(ctx, NULL, True);
+ *value = NULL;
+ *type = XA_NULL(d);
+ *length = 0;
+ *format = 32;
+ return (True);
+ }
+
+ if (XmuConvertStandardSelection(w, ctx->text.time, selection, target, type,
+ (XPointer *)value, length, format))
+ return (True);
+
+ /* else */
+ return (False);
+}
+
+/*
+ * Function:
+ * GetCutBuffferNumber
+ *
+ * Parameters:
+ * atom - atom to check
+ *
+ * Description:
+ * Returns the number of the cut buffer.
+ *
+ * Returns:
+ * The number of the cut buffer representing this atom or NOT_A_CUT_BUFFER
+ */
+#define NOT_A_CUT_BUFFER -1
+static int
+GetCutBufferNumber(Atom atom)
+{
+ if (atom == XA_CUT_BUFFER0) return (0);
+ if (atom == XA_CUT_BUFFER1) return (1);
+ if (atom == XA_CUT_BUFFER2) return (2);
+ if (atom == XA_CUT_BUFFER3) return (3);
+ if (atom == XA_CUT_BUFFER4) return (4);
+ if (atom == XA_CUT_BUFFER5) return (5);
+ if (atom == XA_CUT_BUFFER6) return (6);
+ if (atom == XA_CUT_BUFFER7) return (7);
+ return (NOT_A_CUT_BUFFER);
+}
+
+static void
+TextLoseSelection(Widget w, Atom *selection)
+{
+ TextWidget ctx = (TextWidget)w;
+ Atom *atomP;
+ int i;
+ XawTextSelectionSalt*salt, *prevSalt, *nextSalt;
+
+ atomP = ctx->text.s.selections;
+ for (i = 0 ; i < ctx->text.s.atom_count; i++, atomP++)
+ if ((*selection == *atomP)
+ || (GetCutBufferNumber(*atomP) != NOT_A_CUT_BUFFER))
+ *atomP = (Atom)0;
+
+ while (ctx->text.s.atom_count
+ && ctx->text.s.selections[ctx->text.s.atom_count - 1] == 0)
+ ctx->text.s.atom_count--;
+
+ /*
+ * Must walk the selection list in opposite order from UnsetSelection
+ */
+ atomP = ctx->text.s.selections;
+ for (i = 0 ; i < ctx->text.s.atom_count; i++, atomP++)
+ if (*atomP == (Atom)0) {
+ *atomP = ctx->text.s.selections[--ctx->text.s.atom_count];
+ while (ctx->text.s.atom_count
+ && ctx->text.s.selections[ctx->text.s.atom_count-1] == 0)
+ ctx->text.s.atom_count--;
+ }
+
+ if (ctx->text.s.atom_count == 0)
+ ModifySelection(ctx, ctx->text.insertPos, ctx->text.insertPos);
+
+ prevSalt = 0;
+ for (salt = ctx->text.salt; salt; salt = nextSalt) {
+ atomP = salt->s.selections;
+ nextSalt = salt->next;
+ for (i = 0 ; i < salt->s.atom_count; i++, atomP++)
+ if (*selection == *atomP)
+ *atomP = (Atom)0;
+
+ while (salt->s.atom_count
+ && salt->s.selections[salt->s.atom_count-1] == 0)
+ salt->s.atom_count--;
+
+ /*
+ * Must walk the selection list in opposite order from UnsetSelection
+ */
+ atomP = salt->s.selections;
+ for (i = 0 ; i < salt->s.atom_count; i++, atomP++)
+ if (*atomP == (Atom)0) {
+ *atomP = salt->s.selections[--salt->s.atom_count];
+ while (salt->s.atom_count
+ && salt->s.selections[salt->s.atom_count-1] == 0)
+ salt->s.atom_count--;
+ }
+
+ if (salt->s.atom_count == 0) {
+ XtFree ((char *) salt->s.selections);
+ XtFree (salt->contents);
+ if (prevSalt)
+ prevSalt->next = nextSalt;
+ else
+ ctx->text.salt = nextSalt;
+ XtFree((char *)salt);
+ }
+ else
+ prevSalt = salt;
+ }
+}
+
+void
+_XawTextSaltAwaySelection(TextWidget ctx, Atom *selections, int num_atoms)
+{
+ XawTextSelectionSalt *salt;
+ int i, j;
+
+ for (i = 0; i < num_atoms; i++)
+ TextLoseSelection((Widget)ctx, selections + i);
+ if (num_atoms == 0)
+ return;
+ salt = (XawTextSelectionSalt *)
+ XtMalloc((unsigned)sizeof(XawTextSelectionSalt));
+ if (!salt)
+ return;
+ salt->s.selections = (Atom *)XtMalloc((unsigned)(num_atoms * sizeof(Atom)));
+ if (!salt->s.selections) {
+ XtFree((char *)salt);
+ return;
+ }
+ salt->s.left = ctx->text.s.left;
+ salt->s.right = ctx->text.s.right;
+ salt->s.type = ctx->text.s.type;
+ salt->contents = _XawTextGetSTRING(ctx, ctx->text.s.left, ctx->text.s.right);
+ if (XawTextFormat(ctx, XawFmtWide)) {
+ XTextProperty textprop;
+ if (XwcTextListToTextProperty(XtDisplay((Widget)ctx),
+ (wchar_t**)(&(salt->contents)), 1,
+ XCompoundTextStyle,
+ &textprop) < Success) {
+ XtFree(salt->contents);
+ salt->length = 0;
+ return;
+ }
+ XtFree(salt->contents);
+ salt->contents = (char *)textprop.value;
+ salt->length = textprop.nitems;
+ }
+ else
+ salt->length = strlen (salt->contents);
+ salt->next = ctx->text.salt;
+ ctx->text.salt = salt;
+ j = 0;
+ for (i = 0; i < num_atoms; i++) {
+ if (GetCutBufferNumber (selections[i]) == NOT_A_CUT_BUFFER) {
+ salt->s.selections[j++] = selections[i];
+ XtOwnSelection((Widget)ctx, selections[i], ctx->text.time,
+ TextConvertSelection, TextLoseSelection, NULL);
+ }
+ }
+ salt->s.atom_count = j;
+}
+
+static void
+_SetSelection(TextWidget ctx, XawTextPosition left, XawTextPosition right,
+ Atom *selections, Cardinal count)
+{
+#ifndef OLDXAW
+ Cardinal i;
+ XawTextPosition pos;
+ TextSrcObject src = (TextSrcObject)ctx->text.source;
+
+ for (i = 0; i < src->textSrc.num_text; i++) {
+ TextWidget tw = (TextWidget)src->textSrc.text[i];
+ Bool needs_updating = tw->text.old_insert < 0;
+ Bool showposition = tw->text.showposition;
+
+ if (needs_updating) {
+ tw->text.showposition = False;
+ _XawTextPrepareToUpdate(tw);
+ }
+#else
+ TextWidget tw = ctx;
+ XawTextPosition pos;
+#endif /* OLDXAW */
+
+ if (left < tw->text.s.left) {
+ pos = Min(right, tw->text.s.left);
+ _XawTextNeedsUpdating(tw, left, pos);
+ }
+ if (left > tw->text.s.left) {
+ pos = Min(left, tw->text.s.right);
+ _XawTextNeedsUpdating(tw, tw->text.s.left, pos);
+ }
+ if (right < tw->text.s.right) {
+ pos = Max(right, tw->text.s.left);
+ _XawTextNeedsUpdating(tw, pos, tw->text.s.right);
+ }
+ if (right > tw->text.s.right) {
+ pos = Max(left, tw->text.s.right);
+ _XawTextNeedsUpdating(tw, pos, right);
+ }
+
+ tw->text.s.left = left;
+ tw->text.s.right = right;
+
+#ifndef OLDXAW
+ if (needs_updating) {
+ _XawTextExecuteUpdate(tw);
+ tw->text.showposition = showposition;
+ }
+ }
+#endif /* OLDXAW */
+
+ SrcSetSelection(ctx->text.source, left, right,
+ (count == 0) ? None : selections[0]);
+
+ if (left < right) {
+ Widget w = (Widget)ctx;
+ int buffer;
+
+ while (count) {
+ Atom selection = selections[--count];
+
+ /*
+ * If this is a cut buffer
+ */
+ if ((buffer = GetCutBufferNumber(selection)) != NOT_A_CUT_BUFFER) {
+ unsigned char *ptr, *tptr;
+ unsigned int amount, max_len = MAX_CUT_LEN(XtDisplay(w));
+ unsigned long len;
+
+ tptr= ptr= (unsigned char *)_XawTextGetSTRING(ctx,
+ ctx->text.s.left,
+ ctx->text.s.right);
+ if (XawTextFormat(ctx, XawFmtWide)) {
+ /*
+ * Only XA_STRING(Latin 1) is allowed in CUT_BUFFER,
+ * so we get it from wchar string, then free the wchar string
+ */
+ XTextProperty textprop;
+
+ if (XwcTextListToTextProperty(XtDisplay(w), (wchar_t**)&ptr,
+ 1, XStringStyle, &textprop)
+ < Success){
+ XtFree((char *)ptr);
+ return;
+ }
+ XtFree((char *)ptr);
+ tptr = ptr = textprop.value;
+ }
+ if (buffer == 0) {
+ _CreateCutBuffers(XtDisplay(w));
+ XRotateBuffers(XtDisplay(w), 1);
+ }
+ amount = Min ((len = strlen((char *)ptr)), max_len);
+ XChangeProperty(XtDisplay(w), RootWindow(XtDisplay(w), 0),
+ selection, XA_STRING, 8, PropModeReplace,
+ ptr, amount);
+
+ while (len > max_len) {
+ len -= max_len;
+ tptr += max_len;
+ amount = Min (len, max_len);
+ XChangeProperty(XtDisplay(w), RootWindow(XtDisplay(w), 0),
+ selection, XA_STRING, 8, PropModeAppend,
+ tptr, amount);
+ }
+ XtFree ((char *)ptr);
+ }
+ else /* This is a real selection */
+ XtOwnSelection(w, selection, ctx->text.time, TextConvertSelection,
+ TextLoseSelection, NULL);
+ }
+ }
+ else
+ XawTextUnsetSelection((Widget)ctx);
+}
+
+#ifndef OLDXAW
+void
+_XawTextSetLineAndColumnNumber(TextWidget ctx, Bool force)
+{
+ int line_number, column_number;
+
+ if (ctx->text.old_insert != ctx->text.insertPos &&
+ ctx->text.lt.base_line < 0) {
+ ctx->text.lt.base_line = 0;
+ (void)_BuildLineTable(ctx, ctx->text.lt.top, 0);
+ }
+
+ line_number = ResolveLineNumber(ctx);
+ column_number = ResolveColumnNumber(ctx);
+
+ if (force || (ctx->text.column_number != column_number
+ || ctx->text.line_number != line_number)) {
+ XawTextPositionInfo info;
+
+ ctx->text.line_number = info.line_number = line_number;
+ ctx->text.column_number = info.column_number = column_number;
+ info.insert_position = ctx->text.insertPos;
+ info.last_position = ctx->text.lastPos;
+ info.overwrite_mode = ctx->text.overwrite;
+
+ XtCallCallbacks((Widget)ctx, XtNpositionCallback, (XtPointer)&info);
+ }
+}
+
+static int
+ResolveColumnNumber(TextWidget ctx)
+{
+ Widget src = ctx->text.source;
+ short column_number = 0;
+ XawTextPosition position;
+ XawTextBlock block;
+ unsigned long format = _XawTextFormat(ctx);
+ TextSinkObject sink = (TextSinkObject)ctx->text.sink;
+ short *char_tabs = sink->text_sink.char_tabs;
+ int tab_count = sink->text_sink.tab_count;
+ int tab_index = 0, tab_column = 0, tab_base = 0;
+
+ if (ctx->text.lt.base_line < 1)
+ return (ctx->text.column_number);
+
+ position = SrcScan(src, ctx->text.insertPos, XawstEOL, XawsdLeft, 1, False);
+ XawTextSourceRead(src, position, &block, ctx->text.insertPos - position);
+
+ for (; position < ctx->text.insertPos; position++) {
+ if (position - block.firstPos >= block.length)
+ XawTextSourceRead(src, position, &block, ctx->text.insertPos - position);
+ if ((format == XawFmt8Bit && block.ptr[position - block.firstPos] == '\t') ||
+ (format == XawFmtWide && ((wchar_t*)block.ptr)[position - block.firstPos] == _Xaw_atowc(XawTAB))) {
+ while (tab_base + tab_column <= column_number) {
+ if (tab_count) {
+ for (; tab_index < tab_count; ++tab_index)
+ if (tab_base + char_tabs[tab_index] > column_number) {
+ tab_column = char_tabs[tab_index];
+ break;
+ }
+ if (tab_index >= tab_count) {
+ tab_base += char_tabs[tab_count - 1];
+ tab_column = tab_index = 0;
+ }
+ }
+ else
+ tab_column += DEFAULT_TAB_SIZE;
+ }
+ column_number = tab_base + tab_column;
+ }
+ else
+ ++column_number;
+ if (column_number >= 16384) {
+ column_number = 16383;
+ break;
+ }
+ }
+
+ return (column_number);
+}
+#endif /* OLDXAW */
+
+void
+_XawTextSourceChanged(Widget w, XawTextPosition left, XawTextPosition right,
+ XawTextBlock *block, int lines)
+{
+ TextWidget ctx = (TextWidget)w;
+ Widget src = ctx->text.source;
+ XawTextPosition update_from, update_to, top;
+ Boolean update_disabled;
+ int delta, line, line_from;
+
+ if (left < ctx->text.old_insert) {
+ XawTextPosition old_insert = ctx->text.old_insert;
+
+ if (right < ctx->text.old_insert)
+ old_insert -= right - left;
+ else
+ old_insert = left;
+
+ ctx->text.insertPos = old_insert + block->length;
+ }
+#ifndef OLDXAW
+ if (left <= ctx->text.lt.top) {
+ if (left + block->length - (right - left) < ctx->text.lt.top) {
+ ctx->text.source_changed = SRC_CHANGE_BEFORE;
+ ctx->text.lt.base_line += lines;
+ }
+ else
+ ctx->text.source_changed = SRC_CHANGE_OVERLAP;
+ }
+ else
+ ctx->text.source_changed = SRC_CHANGE_AFTER;
+#endif
+
+ update_from = left;
+ update_to = left + block->length;
+ update_to = SrcScan(src, update_to, XawstEOL, XawsdRight, 1, False);
+ delta = block->length - (right - left);
+ if (delta < 0)
+ ctx->text.clear_to_eol = True;
+ if (update_to == update_from)
+ ++update_to;
+ update_disabled = ctx->text.update_disabled;
+ ctx->text.update_disabled = True;
+ ctx->text.lastPos = XawTextGetLastPosition(ctx);
+ top = ctx->text.lt.info[0].position;
+
+ XawTextUnsetSelection((Widget)ctx);
+
+ if (delta) {
+ int i;
+ XmuSegment *seg;
+
+ for (seg = ctx->text.update->segment; seg; seg = seg->next) {
+ if (seg->x1 > (int)left)
+ break;
+ else if (seg->x2 > (int)left) {
+ seg->x2 += delta;
+ seg = seg->next;
+ break;
+ }
+ }
+ for (; seg; seg = seg->next) {
+ seg->x1 += delta;
+ seg->x2 += delta;
+ }
+ XmuOptimizeScanline(ctx->text.update);
+
+ for (i = 0; i <= ctx->text.lt.lines; i++)
+ if (ctx->text.lt.info[i].position > left)
+ break;
+ for (; i <= ctx->text.lt.lines; i++)
+ ctx->text.lt.info[i].position += delta;
+ }
+
+ if (top != ctx->text.lt.info[0].position) {
+ line_from = line = 0;
+ ctx->text.lt.top = top = SrcScan(src, ctx->text.lt.info[0].position,
+ XawstEOL, XawsdLeft, 1, False);
+ update_from = top;
+ }
+ else {
+ line_from = line = LineForPosition(ctx, update_from + delta);
+ top = ctx->text.lt.info[line].position;
+ }
+
+ if (line > 0 && ctx->text.wrap == XawtextWrapWord) {
+ --line;
+ top = ctx->text.lt.info[line].position;
+ }
+
+ (void)_BuildLineTable(ctx, top, line);
+
+ if (ctx->text.wrap == XawtextWrapWord) {
+ if (line_from != LineForPosition(ctx, update_from)
+ || line_from != LineForPosition(ctx, update_to)) {
+ ctx->text.clear_to_eol = True;
+ update_from = SrcScan(src, update_from,
+ XawstWhiteSpace, XawsdLeft, 1, True);
+ if (update_to >= ctx->text.lastPos)
+ /* this is not an error, it just tells _BuildLineTable to
+ * clear to the bottom of the window. The value of update_to
+ * should not be > ctx->text.lastPos.
+ */
+ ++update_to;
+ }
+ }
+ else if (!ctx->text.clear_to_eol) {
+ if (LineForPosition(ctx, update_from)
+ != LineForPosition(ctx, update_to))
+ ctx->text.clear_to_eol = True;
+ }
+
+ _XawTextNeedsUpdating(ctx, update_from, update_to);
+ ctx->text.update_disabled = update_disabled;
+}
+
+/*
+ * Function:
+ * _XawTextReplace
+ *
+ * Parameters:
+ * ctx - text widget
+ * left - left offset
+ * right - right offset
+ * block - text block
+ *
+ * Description:
+ * Replaces the text between left and right by the text in block.
+ * Does all the required calculations of offsets, and rebuild the
+ * the line table, from the insertion point (or previous line, if
+ * wrap mode is 'word').
+ *
+ * Returns:
+ * XawEditDone - success
+ * any other value - error code
+ */
+int
+_XawTextReplace(TextWidget ctx, XawTextPosition left, XawTextPosition right,
+ XawTextBlock *block)
+{
+ Arg args[1];
+ Widget src;
+ XawTextEditType edit_mode;
+
+ if (left == right && block->length == 0)
+ return (XawEditDone);
+
+ src = ctx->text.source;
+ XtSetArg(args[0], XtNeditType, &edit_mode);
+ XtGetValues(src, args, 1);
+
+ if (edit_mode == XawtextAppend) {
+ if (block->length == 0)
+ return (XawEditError);
+ ctx->text.insertPos = ctx->text.lastPos;
+ }
+
+#ifndef OLDXAW
+ return (SrcReplace(src, left, right, block));
+#else
+ if (SrcReplace(src, left, right, block) == XawEditDone) {
+ _XawTextSourceChanged((Widget)ctx, left, right, block, 0);
+
+ return (XawEditDone);
+ }
+
+ return (XawEditError);
+#endif
+}
+
+/*
+ * This routine will display text between two arbitrary source positions.
+ * In the event that this span contains highlighted text for the selection,
+ * only that portion will be displayed highlighted.
+ */
+static void
+OldDisplayText(Widget w, XawTextPosition left, XawTextPosition right)
+{
+ static XmuSegment segment;
+ static XmuScanline next;
+ static XmuScanline scanline = {0, &segment, &next};
+ static XmuArea area = {&scanline};
+
+ TextWidget ctx = (TextWidget)w;
+ int x, y, line;
+ XawTextPosition start, end, last, final;
+ XmuScanline *scan;
+ XmuSegment *seg;
+ XmuArea *clip = NULL;
+ Bool cleol = ctx->text.clear_to_eol;
+ Bool has_selection = ctx->text.s.right > ctx->text.s.left;
+
+ left = left < ctx->text.lt.top ? ctx->text.lt.top : left;
+
+ if (left > right || !LineAndXYForPosition(ctx, left, &line, &x, &y))
+ return;
+
+ last = XawTextGetLastPosition(ctx);
+ segment.x2 = (int)XtWidth(ctx) - ctx->text.r_margin.right;
+
+ if (cleol)
+ clip = XmuCreateArea();
+
+ for (start = left; start < right && line < ctx->text.lt.lines; line++) {
+ if ((end = ctx->text.lt.info[line + 1].position) > right)
+ end = right;
+
+ final = end;
+ if (end > last)
+ end = last;
+
+ if (end > start) {
+ if (!has_selection
+ || (start >= ctx->text.s.right || end <= ctx->text.s.left))
+ _XawTextSinkDisplayText(ctx->text.sink, x, y, start, end, False);
+ else if (start >= ctx->text.s.left && end <= ctx->text.s.right)
+ _XawTextSinkDisplayText(ctx->text.sink, x, y, start, end, True);
+ else {
+ OldDisplayText(w, start, ctx->text.s.left);
+ OldDisplayText(w, Max(start, ctx->text.s.left),
+ Min(end, ctx->text.s.right));
+ OldDisplayText(w, ctx->text.s.right, end);
+ }
+ }
+
+ x = ctx->text.left_margin;
+ if (cleol) {
+ segment.x1 = ctx->text.lt.info[line].textWidth + x;
+ if (XmuValidSegment(&segment)) {
+ scanline.y = y;
+ next.y = ctx->text.lt.info[line + 1].y;
+ XmuAreaOr(clip, &area);
+ }
+ }
+
+ start = final;
+ y = ctx->text.lt.info[line + 1].y;
+ }
+
+ if (cleol) {
+ for (scan = clip->scanline; scan && scan->next; scan = scan->next)
+ for (seg = scan->segment; seg; seg = seg->next)
+ SinkClearToBG(ctx->text.sink,
+ seg->x1, scan->y,
+ seg->x2 - seg->x1, scan->next->y - scan->y);
+ XmuDestroyArea(clip);
+ }
+}
+
+#ifndef OLDXAW
+/*ARGSUSED*/
+static void
+DisplayText(Widget w, XawTextPosition left, XawTextPosition right)
+{
+ static XmuSegment segment;
+ static XmuScanline next;
+ static XmuScanline scanline = {0, &segment, &next};
+ static XmuArea area = {&scanline};
+
+ TextWidget ctx = (TextWidget)w;
+ int y, line;
+ XawTextPosition from, to, lastPos;
+ Bool cleol = ctx->text.clear_to_eol;
+ Bool has_selection = ctx->text.s.right > ctx->text.s.left;
+ XawTextPaintList *paint_list;
+
+ left = left < ctx->text.lt.top ? ctx->text.lt.top : left;
+
+ if (left > right || !IsPositionVisible(ctx, left))
+ return;
+
+ line = LineForPosition(ctx, left);
+ y = ctx->text.lt.info[line].y;
+ segment.x2 = (int)XtWidth(ctx) - ctx->text.r_margin.right;
+ lastPos = XawTextGetLastPosition(ctx);
+
+ paint_list = ((TextSinkObject)ctx->text.sink)->text_sink.paint;
+
+ for (from = left; from < right && line < ctx->text.lt.lines; line++) {
+ if ((to = ctx->text.lt.info[line + 1].position) > right)
+ to = right;
+
+ if (to > lastPos)
+ to = lastPos;
+
+ if (from < to) {
+ if (!has_selection
+ || (from >= ctx->text.s.right || to <= ctx->text.s.left))
+ XawTextSinkPreparePaint(ctx->text.sink, y, line, from, to, False);
+ else if (from >= ctx->text.s.left && to <= ctx->text.s.right)
+ XawTextSinkPreparePaint(ctx->text.sink, y, line, from, to, True);
+ else {
+ XawTextSinkPreparePaint(ctx->text.sink, y, line, from,
+ ctx->text.s.left, False);
+ XawTextSinkPreparePaint(ctx->text.sink, y, line,
+ XawMax(from, ctx->text.s.left),
+ XawMin(to, ctx->text.s.right), True);
+ XawTextSinkPreparePaint(ctx->text.sink, y, line,
+ ctx->text.s.right, to, False);
+ }
+ }
+
+ if (cleol) {
+ segment.x1 = ctx->text.lt.info[line].textWidth + ctx->text.left_margin;
+ if (XmuValidSegment(&segment)) {
+ scanline.y = y;
+ next.y = ctx->text.lt.info[line + 1].y;
+ XmuAreaOr(paint_list->clip, &area);
+ }
+ }
+ y = ctx->text.lt.info[line + 1].y;
+ from = to;
+ }
+
+ /* clear to the bottom of the window */
+ if (cleol && line >= ctx->text.lt.lines) {
+ segment.x1 = ctx->text.left_margin;
+ if (XmuValidSegment(&segment)) {
+ scanline.y = y;
+ next.y = (int)XtHeight(ctx) - (int)ctx->text.margin.bottom;
+ XmuAreaOr(paint_list->clip, &area);
+ }
+ }
+}
+#endif
+
+/*
+ * This routine implements multi-click selection in a hardwired manner.
+ * It supports multi-click entity cycling (char, word, line, file) and mouse
+ * motion adjustment of the selected entitie (i.e. select a word then, with
+ * button still down, adjust wich word you really meant by moving the mouse).
+ * [NOTE: This routine is to be replaced by a set of procedures that
+ * will allows clients to implements a wide class of draw through and
+ * multi-click selection user interfaces.]
+ */
+static void
+DoSelection(TextWidget ctx, XawTextPosition pos, Time time, Bool motion)
+{
+ XawTextPosition newLeft, newRight;
+ XawTextSelectType newType, *sarray;
+ Widget src = ctx->text.source;
+
+ if (motion)
+ newType = ctx->text.s.type;
+ else {
+ if ((abs((long) time - (long) ctx->text.lasttime) < MULTI_CLICK_TIME)
+ && (pos >= ctx->text.s.left && pos <= ctx->text.s.right)) {
+ sarray = ctx->text.sarray;
+ for (; *sarray != XawselectNull && *sarray != ctx->text.s.type;
+ sarray++)
+ ;
+ if (*sarray == XawselectNull)
+ newType = *(ctx->text.sarray);
+ else {
+ newType = *(sarray + 1);
+ if (newType == XawselectNull)
+ newType = *(ctx->text.sarray);
+ }
+ }
+ else /* single-click event */
+ newType = *(ctx->text.sarray);
+
+ ctx->text.lasttime = time;
+ }
+ switch (newType) {
+ case XawselectPosition:
+ newLeft = newRight = pos;
+ break;
+ case XawselectChar:
+ newLeft = pos;
+ newRight = SrcScan(src, pos, XawstPositions, XawsdRight, 1, False);
+ break;
+ case XawselectWord:
+ case XawselectParagraph:
+ case XawselectAlphaNumeric: {
+ XawTextScanType stype;
+
+ if (newType == XawselectWord)
+ stype = XawstWhiteSpace;
+ else if (newType == XawselectParagraph)
+ stype = XawstParagraph;
+ else
+ stype = XawstAlphaNumeric;
+
+ /*
+ * Somewhat complicated, but basically I treat the space between
+ * two objects as another object. The object that I am currently
+ * in then becomes the end of the selection.
+ *
+ * Chris Peterson - 4/19/90.
+ */
+ newRight = SrcScan(ctx->text.source, pos, stype,
+ XawsdRight, 1, False);
+ newRight = SrcScan(ctx->text.source, newRight, stype,
+ XawsdLeft, 1, False);
+
+ if (pos != newRight)
+ newLeft = SrcScan(ctx->text.source, pos, stype,
+ XawsdLeft, 1, False);
+ else
+ newLeft = pos;
+
+ newLeft =SrcScan(ctx->text.source, newLeft, stype,
+ XawsdRight, 1, False);
+
+ if (newLeft > newRight) {
+ XawTextPosition temp = newLeft;
+ newLeft = newRight;
+ newRight = temp;
+ }
+ } break;
+ case XawselectLine:
+ newLeft = SrcScan(src, pos, XawstEOL, XawsdLeft, 1, False);
+ newRight = SrcScan(src, pos, XawstEOL, XawsdRight, 1, False);
+ break;
+ case XawselectAll:
+ newLeft = SrcScan(src, pos, XawstAll, XawsdLeft, 1, False);
+ newRight = SrcScan(src, pos, XawstAll, XawsdRight, 1, False);
+ break;
+ default:
+ XtAppWarning(XtWidgetToApplicationContext((Widget) ctx),
+ "Text Widget: empty selection array.");
+ return;
+ }
+
+ if (newLeft != ctx->text.s.left || newRight != ctx->text.s.right
+ || newType != ctx->text.s.type) {
+ ModifySelection(ctx, newLeft, newRight);
+ if (pos - ctx->text.s.left < ctx->text.s.right - pos)
+ ctx->text.insertPos = newLeft;
+ else
+ ctx->text.insertPos = newRight;
+ ctx->text.s.type = newType;
+ }
+ if (!motion) { /* setup so we can freely mix select extend calls*/
+ ctx->text.origSel.type = ctx->text.s.type;
+ ctx->text.origSel.left = ctx->text.s.left;
+ ctx->text.origSel.right = ctx->text.s.right;
+
+ if (pos >= ctx->text.s.left + (ctx->text.s.right - ctx->text.s.left) / 2)
+ ctx->text.extendDir = XawsdRight;
+ else
+ ctx->text.extendDir = XawsdLeft;
+ }
+}
+
+/*
+ * This routine implements extension of the currently selected text in
+ * the "current" mode (i.e. char word, line, etc.). It worries about
+ * extending from either end of the selection and handles the case when you
+ * cross through the "center" of the current selection (e.g. switch which
+ * end you are extending!).
+ */
+static void
+ExtendSelection(TextWidget ctx, XawTextPosition pos, Bool motion)
+{
+ XawTextScanDirection dir;
+
+ if (!motion) { /* setup for extending selection */
+ if (ctx->text.s.left == ctx->text.s.right) /* no current selection. */
+ ctx->text.s.left = ctx->text.s.right = ctx->text.insertPos;
+ else {
+ ctx->text.origSel.left = ctx->text.s.left;
+ ctx->text.origSel.right = ctx->text.s.right;
+ }
+
+ ctx->text.origSel.type = ctx->text.s.type;
+
+ if (pos >= ctx->text.s.left + (ctx->text.s.right - ctx->text.s.left) / 2)
+ ctx->text.extendDir = XawsdRight;
+ else
+ ctx->text.extendDir = XawsdLeft;
+ }
+ else /* check for change in extend direction */
+ if ((ctx->text.extendDir == XawsdRight &&
+ pos <= ctx->text.origSel.left) ||
+ (ctx->text.extendDir == XawsdLeft &&
+ pos >= ctx->text.origSel.right)) {
+ ctx->text.extendDir = (ctx->text.extendDir == XawsdRight) ?
+ XawsdLeft : XawsdRight;
+ ModifySelection(ctx, ctx->text.origSel.left, ctx->text.origSel.right);
+ }
+
+ dir = ctx->text.extendDir;
+ switch (ctx->text.s.type) {
+ case XawselectWord:
+ case XawselectParagraph:
+ case XawselectAlphaNumeric: {
+ XawTextPosition left_pos, right_pos;
+ XawTextScanType stype;
+
+ if (ctx->text.s.type == XawselectWord)
+ stype = XawstWhiteSpace;
+ else if (ctx->text.s.type == XawselectParagraph)
+ stype = XawstParagraph;
+ else
+ stype = XawstAlphaNumeric;
+
+ /*
+ * Somewhat complicated, but basically I treat the space between
+ * two objects as another object. The object that I am currently
+ * in then becomes the end of the selection.
+ *
+ * Chris Peterson - 4/19/90.
+ */
+ right_pos = SrcScan(ctx->text.source, pos, stype,
+ XawsdRight, 1, False);
+ right_pos =SrcScan(ctx->text.source, right_pos, stype,
+ XawsdLeft, 1, False);
+
+ if (pos != right_pos)
+ left_pos = SrcScan(ctx->text.source, pos, stype,
+ XawsdLeft, 1, False);
+ else
+ left_pos = pos;
+
+ left_pos =SrcScan(ctx->text.source, left_pos, stype,
+ XawsdRight, 1, False);
+
+ if (dir == XawsdLeft)
+ pos = Min(left_pos, right_pos);
+ else /* dir == XawsdRight */
+ pos = Max(left_pos, right_pos);
+ } break;
+ case XawselectLine:
+ pos = SrcScan(ctx->text.source, pos, XawstEOL,
+ dir, 1, dir == XawsdRight);
+ break;
+ case XawselectAll:
+ pos = ctx->text.insertPos;
+ /*FALLTHROUGH*/
+ case XawselectPosition:
+ default:
+ break;
+ }
+
+ if (dir == XawsdRight)
+ ModifySelection(ctx, ctx->text.s.left, pos);
+ else
+ ModifySelection(ctx, pos, ctx->text.s.right);
+
+ ctx->text.insertPos = pos;
+}
+
+/*
+ * Function:
+ * _XawTextClearAndCenterDisplay
+ *
+ * Parameters:
+ * ctx - text widget
+ *
+ * Description:
+ * Redraws the display with the cursor in insert point
+ * centered vertically.
+ */
+void
+_XawTextClearAndCenterDisplay(TextWidget ctx)
+{
+ int left_margin = ctx->text.left_margin;
+ Bool visible = IsPositionVisible(ctx, ctx->text.insertPos);
+
+ _XawTextShowPosition(ctx);
+
+ if (XtIsRealized((Widget)ctx) && visible &&
+ left_margin == ctx->text.left_margin) {
+ int insert_line = LineForPosition(ctx, ctx->text.insertPos);
+ int scroll_by = insert_line - (ctx->text.lt.lines >> 1);
+ Boolean clear_to_eol = ctx->text.clear_to_eol;
+
+ XawTextScroll(ctx, scroll_by, 0);
+ SinkClearToBG(ctx->text.sink, 0, 0, XtWidth(ctx), XtHeight(ctx));
+ ClearWindow(ctx);
+ clear_to_eol = ctx->text.clear_to_eol;
+ ctx->text.clear_to_eol = False;
+ FlushUpdate(ctx);
+ ctx->text.clear_to_eol = clear_to_eol;
+ }
+}
+
+/*
+ * Internal redisplay entire window
+ * Legal to call only if widget is realized
+ */
+static void
+DisplayTextWindow(Widget w)
+{
+ TextWidget ctx = (TextWidget)w;
+
+ _XawTextBuildLineTable(ctx, ctx->text.lt.top, False);
+ ClearWindow(ctx);
+}
+
+static void
+TextSinkResize(Widget w)
+{
+ if (w && XtClass(w)->core_class.resize)
+ XtClass(w)->core_class.resize(w);
+}
+
+/* ARGSUSED */
+void
+_XawTextCheckResize(TextWidget ctx)
+{
+ return;
+}
+
+/*
+ * Converts (params, num_params) to a list of atoms & caches the
+ * list in the TextWidget instance.
+ */
+Atom *
+_XawTextSelectionList(TextWidget ctx, String *list, Cardinal nelems)
+{
+ Atom *sel = ctx->text.s.selections;
+ Display *dpy = XtDisplay((Widget)ctx);
+ int n;
+
+ if (nelems > (Cardinal)ctx->text.s.array_size) {
+ sel = (Atom *)XtRealloc((char *)sel, sizeof(Atom) * nelems);
+ ctx->text.s.array_size = nelems;
+ ctx->text.s.selections = sel;
+ }
+ for (n = nelems; --n >= 0; sel++, list++)
+ *sel = XInternAtom(dpy, *list, False);
+ ctx->text.s.atom_count = nelems;
+
+ return (ctx->text.s.selections);
+}
+
+/*
+ * Function:
+ * SetSelection
+ *
+ * Parameters:
+ * ctx - text widget
+ * defaultSel - default selection
+ * l - left and right ends of the selection
+ * r - ""
+ * list - the selection list (as strings).
+ * nelems - ""
+ *
+ * Description:
+ * Sets the current selection.
+ *
+ * Note:
+ * if (ctx->text.s.left >= ctx->text.s.right) then the selection is unset
+ */
+void
+_XawTextSetSelection(TextWidget ctx, XawTextPosition l, XawTextPosition r,
+ String *list, Cardinal nelems)
+{
+ if (nelems == 1 && !strcmp (list[0], "none"))
+ return;
+ if (nelems == 0) {
+ String defaultSel = "PRIMARY";
+ list = &defaultSel;
+ nelems = 1;
+ }
+ _SetSelection(ctx, l, r, _XawTextSelectionList(ctx, list, nelems), nelems);
+}
+
+/*
+ * Function:
+ * ModifySelection
+ *
+ * Parameters:
+ * ctx - text widget
+ * left - left and right ends of the selection
+ * right - ""
+ *
+ * Description:
+ * Modifies the current selection.
+ *
+ * Note:
+ * if (ctx->text.s.left >= ctx->text.s.right) then the selection is unset
+ */
+static void
+ModifySelection(TextWidget ctx, XawTextPosition left, XawTextPosition right)
+{
+ if (left == right)
+ ctx->text.insertPos = left;
+ _SetSelection(ctx, left, right, NULL, 0);
+}
+
+/*
+ * This routine is used to perform various selection functions. The goal is
+ * to be able to specify all the more popular forms of draw-through and
+ * multi-click selection user interfaces from the outside.
+ */
+void
+_XawTextAlterSelection(TextWidget ctx, XawTextSelectionMode mode,
+ XawTextSelectionAction action, String *params,
+ Cardinal *num_params)
+{
+ XawTextPosition position;
+ Boolean flag;
+
+ /*
+ * This flag is used by TextPop.c:DoReplace() to determine if the selection
+ * is okay to use, or if it has been modified.
+ */
+ if (ctx->text.search != NULL)
+ ctx->text.search->selection_changed = True;
+
+ position = PositionForXY(ctx, (int) ctx->text.ev_x, (int) ctx->text.ev_y);
+
+ flag = (action != XawactionStart);
+ if (mode == XawsmTextSelect)
+ DoSelection(ctx, position, ctx->text.time, flag);
+ else /* mode == XawsmTextExtend */
+ ExtendSelection (ctx, position, flag);
+
+ if (action == XawactionEnd)
+ _XawTextSetSelection(ctx, ctx->text.s.left, ctx->text.s.right,
+ params, *num_params);
+}
+
+/*
+ * Function:
+ * UpdateTextInRectangle
+ *
+ * Parameters:
+ * ctx - the text widget
+ * rect - rectangle
+ *
+ * Description:
+ * Updates the text in the given rectangle
+ */
+static void
+UpdateTextInRectangle(TextWidget ctx, XRectangle *rect)
+{
+ XawTextLineTable *lt;
+ int line, y1, y2, x2;
+
+ y1 = rect->y;
+ y2 = y1 + rect->height;
+ x2 = rect->x + rect->width;
+
+ for (line = 0, lt = &ctx->text.lt; line < lt->lines; line++)
+ if (lt->info[line + 1].y > y1)
+ break;
+ for (; line <= lt->lines; line++) {
+ if (lt->info[line].y > y2)
+ break;
+ UpdateTextInLine(ctx, line, rect->x, x2);
+ }
+}
+
+/*
+ * This routine processes all "expose region" XEvents. In general, its job
+ * is to the best job at minimal re-paint of the text, displayed in the
+ * window, that it can.
+ */
+/* ARGSUSED */
+static void
+XawTextExpose(Widget w, XEvent *event, Region region)
+{
+ TextWidget ctx = (TextWidget)w;
+ Boolean clear_to_eol;
+ XRectangle expose;
+
+ if (event->type == Expose) {
+ expose.x = event->xexpose.x;
+ expose.y = event->xexpose.y;
+ expose.width = event->xexpose.width;
+ expose.height = event->xexpose.height;
+ }
+ else if (event->type == GraphicsExpose) {
+ expose.x = event->xgraphicsexpose.x;
+ expose.y = event->xgraphicsexpose.y;
+ expose.width = event->xgraphicsexpose.width;
+ expose.height = event->xgraphicsexpose.height;
+ }
+ else
+ return;
+
+ _XawTextPrepareToUpdate(ctx);
+
+ if (Superclass->core_class.expose)
+ (*Superclass->core_class.expose)(w, event, region);
+
+ clear_to_eol = ctx->text.clear_to_eol;
+ ctx->text.clear_to_eol = False;
+
+ UpdateTextInRectangle(ctx, &expose);
+ XawTextSinkGetCursorBounds(ctx->text.sink, &expose);
+ UpdateTextInRectangle(ctx, &expose);
+ SinkClearToBG(ctx->text.sink, expose.x, expose.y,
+ expose.width, expose.height);
+ _XawTextExecuteUpdate(ctx);
+ ctx->text.clear_to_eol = clear_to_eol;
+}
+
+/*
+ * This routine does all setup required to syncronize batched screen updates
+ */
+void
+_XawTextPrepareToUpdate(TextWidget ctx)
+{
+ if (ctx->text.old_insert < 0) {
+ InsertCursor((Widget)ctx, XawisOff);
+ ctx->text.showposition = False;
+ ctx->text.old_insert = ctx->text.insertPos;
+ ctx->text.clear_to_eol = False;
+#ifndef OLDXAW
+ ctx->text.source_changed = SRC_CHANGE_NONE;
+#endif
+ }
+}
+
+/*
+ * This is a private utility routine used by _XawTextExecuteUpdate. It
+ * processes all the outstanding update requests and merges update
+ * ranges where possible.
+ */
+static void
+FlushUpdate(TextWidget ctx)
+{
+ XmuSegment *seg;
+ void (*display_text)(Widget, XawTextPosition, XawTextPosition);
+
+ if (XtIsRealized((Widget)ctx)) {
+ ctx->text.s.right = XawMin(ctx->text.s.right, ctx->text.lastPos);
+ ctx->text.s.left = XawMin(ctx->text.s.left, ctx->text.s.right);
+
+#ifndef OLDXAW
+ if (XawTextSinkBeginPaint(ctx->text.sink) == False)
+#endif
+ display_text = OldDisplayText;
+#ifndef OLDXAW
+ else
+ display_text = DisplayText;
+#endif
+ for (seg = ctx->text.update->segment; seg; seg = seg->next)
+ (*display_text)((Widget)ctx,
+ (XawTextPosition)seg->x1,
+ (XawTextPosition)seg->x2);
+#ifndef OLDXAW
+ if (display_text != OldDisplayText) {
+ XawTextSinkDoPaint(ctx->text.sink);
+ XawTextSinkEndPaint(ctx->text.sink);
+ }
+#endif
+ }
+ (void)XmuScanlineXor(ctx->text.update, ctx->text.update);
+}
+
+static int
+CountLines(TextWidget ctx, XawTextPosition left, XawTextPosition right)
+{
+ if (ctx->text.wrap == XawtextWrapNever || left >= right)
+ return (1);
+ else {
+ XawTextPosition tmp;
+ int dim, lines = 0, wwidth = GetMaxTextWidth(ctx);
+
+ while (left < right) {
+ tmp = left;
+ XawTextSinkFindPosition(ctx->text.sink, left,
+ ctx->text.left_margin,
+ wwidth, ctx->text.wrap == XawtextWrapWord,
+ &left, &dim, &dim);
+ ++lines;
+ if (tmp == left)
+ ++left;
+ }
+
+ return (lines);
+ }
+ /*NOTREACHED*/
+}
+
+static int
+GetMaxTextWidth(TextWidget ctx)
+{
+ XRectangle cursor;
+ int width;
+
+ XawTextSinkGetCursorBounds(ctx->text.sink, &cursor);
+ width = (int)XtWidth(ctx) - RHMargins(ctx) - cursor.width;
+
+ return (XawMax(0, width));
+}
+
+/*
+ * Function:
+ * _XawTextShowPosition
+ *
+ * Parameters:
+ * ctx - the text widget to show the position
+ *
+ * Description:
+ * Makes sure the text cursor visible, scrolling the text window
+ * if required.
+ */
+void
+_XawTextShowPosition(TextWidget ctx)
+{
+ /*
+ * Variable scroll is used to avoid scanning large files to calculate
+ * line offsets
+ */
+ int hpixels, vlines;
+ XawTextPosition first, last, top, tmp;
+ Bool visible, scroll;
+
+ if (!XtIsRealized((Widget)ctx))
+ return;
+
+ /*
+ * Checks if a horizontal scroll is required
+ */
+ if (ctx->text.wrap == XawtextWrapNever) {
+ int x, vwidth, distance, dim;
+ XRectangle rect;
+
+ vwidth = (int)XtWidth(ctx) - RHMargins(ctx);
+ last = SrcScan(ctx->text.source, ctx->text.insertPos,
+ XawstEOL, XawsdLeft, 1, False);
+ XawTextSinkFindDistance(ctx->text.sink, last,
+ ctx->text.left_margin,
+ ctx->text.insertPos,
+ &distance, &first, &dim);
+ XawTextSinkGetCursorBounds(ctx->text.sink, &rect);
+ x = ctx->text.left_margin - ctx->text.r_margin.left;
+
+ if (x + distance + rect.width > vwidth)
+ hpixels = x + distance + rect.width - vwidth + (vwidth >> 2);
+ else if (x + distance < 0)
+ hpixels = x + distance - (vwidth >> 2);
+ else
+ hpixels = 0;
+ }
+ else
+ hpixels = 0;
+
+ visible = IsPositionVisible(ctx, ctx->text.insertPos);
+
+ /*
+ * If the cursor is already visible
+ */
+ if (!hpixels && visible)
+ return;
+
+ scroll = ctx->core.background_pixmap == XtUnspecifiedPixmap && !hpixels;
+ vlines = 0;
+ first = ctx->text.lt.top;
+
+ /*
+ * Needs to scroll the text window
+ */
+ if (visible)
+ top = ctx->text.lt.top;
+ else {
+ top = SrcScan(ctx->text.source, ctx->text.insertPos,
+ XawstEOL, XawsdLeft, 1, False);
+
+ /*
+ * Finds the nearest left position from ctx->text.insertPos
+ */
+ if (ctx->text.wrap != XawtextWrapNever) {
+ int dim, vwidth = GetMaxTextWidth(ctx);
+
+ last = top;
+ /*CONSTCOND*/
+ while (1) {
+ tmp = last;
+ XawTextSinkFindPosition(ctx->text.sink, last,
+ ctx->text.left_margin, vwidth,
+ ctx->text.wrap == XawtextWrapWord,
+ &last, &dim, &dim);
+ if (last == tmp)
+ ++last;
+ if (last <= ctx->text.insertPos)
+ top = last;
+ else
+ break;
+ }
+ }
+ }
+
+ if (scroll) {
+ if (ctx->text.insertPos < first) { /* Scroll Down */
+ while (first > top) {
+ last = first;
+ first = SrcScan(ctx->text.source, first,
+ XawstEOL, XawsdLeft, 2, False);
+ vlines -= CountLines(ctx, first, last);
+ if (-vlines >= ctx->text.lt.lines) {
+ scroll = False;
+ break;
+ }
+ }
+ }
+ else if (!visible) { /* Scroll Up */
+ while (first < top) {
+ last = first;
+ first = SrcScan(ctx->text.source, first,
+ XawstEOL, XawsdRight, 1, True);
+ vlines += CountLines(ctx, last, first);
+ if (vlines > ctx->text.lt.lines) {
+ scroll = False;
+ break;
+ }
+ }
+ }
+ else
+ scroll = False;
+ }
+
+ /*
+ * If a portion of the text that will be scrolled is visible
+ */
+ if (scroll)
+ XawTextScroll(ctx, vlines ? vlines - (ctx->text.lt.lines >> 1) : 0, 0);
+ /*
+ * Else redraw the entire text window
+ */
+ else {
+ ctx->text.left_margin -= hpixels;
+ if (ctx->text.left_margin > ctx->text.r_margin.left)
+ ctx->text.left_margin = ctx->text.margin.left =
+ ctx->text.r_margin.left;
+
+ if (!visible) {
+ vlines = ctx->text.lt.lines >> 1;
+ if (vlines)
+ top = SrcScan(ctx->text.source, ctx->text.insertPos,
+ XawstEOL, XawsdLeft, vlines + 1, False);
+
+ if (ctx->text.wrap != XawtextWrapNever) {
+ int dim;
+ int n_lines = CountLines(ctx, top, ctx->text.insertPos);
+ int vwidth = GetMaxTextWidth(ctx);
+
+ while (n_lines-- > vlines) {
+ tmp = top;
+ XawTextSinkFindPosition(ctx->text.sink, top,
+ ctx->text.left_margin,
+ vwidth,
+ ctx->text.wrap == XawtextWrapWord,
+ &top, &dim, &dim);
+ if (tmp == top)
+ ++top;
+ }
+ }
+ _XawTextBuildLineTable(ctx, top, True);
+ }
+ else
+ ClearWindow(ctx);
+ }
+ ctx->text.clear_to_eol = True;
+}
+
+#ifndef OLDXAW
+static int
+ResolveLineNumber(TextWidget ctx)
+{
+ int line_number = ctx->text.lt.base_line;
+ XawTextPosition position = ctx->text.lt.top;
+
+ if (ctx->text.lt.base_line < 1)
+ return (ctx->text.line_number);
+
+ if (ctx->text.wrap == XawtextWrapNever
+ && IsPositionVisible(ctx, ctx->text.insertPos))
+ line_number += LineForPosition(ctx, ctx->text.insertPos);
+ else if (position < ctx->text.insertPos) {
+ while (position < ctx->text.insertPos) {
+ position = SrcScan(ctx->text.source, position,
+ XawstEOL, XawsdRight, 1, True);
+ if (position <= ctx->text.insertPos) {
+ ++line_number;
+ if (position == ctx->text.lastPos) {
+ line_number -= !_XawTextSourceNewLineAtEOF(ctx->text.source);
+ break;
+ }
+ }
+ }
+ }
+ else if (position > ctx->text.insertPos) {
+ while (position > ctx->text.insertPos) {
+ position = SrcScan(ctx->text.source, position,
+ XawstEOL, XawsdLeft, 1, False);
+ if (--position >= ctx->text.insertPos)
+ --line_number;
+ }
+ }
+
+ return (line_number);
+}
+#endif
+
+/*
+ * This routine causes all batched screen updates to be performed
+ */
+void
+_XawTextExecuteUpdate(TextWidget ctx)
+{
+ if (ctx->text.update_disabled || ctx->text.old_insert < 0)
+ return;
+
+ if(ctx->text.old_insert != ctx->text.insertPos || ctx->text.showposition)
+ _XawTextShowPosition(ctx);
+
+ FlushUpdate(ctx);
+ InsertCursor((Widget)ctx, XawisOn);
+ ctx->text.old_insert = -1;
+#ifndef OLDXAW
+ _XawTextSetLineAndColumnNumber(ctx, False);
+#endif
+}
+
+static void
+XawTextDestroy(Widget w)
+{
+ TextWidget ctx = (TextWidget)w;
+
+ DestroyHScrollBar(ctx);
+ DestroyVScrollBar(ctx);
+
+ XtFree((char *)ctx->text.s.selections);
+ XtFree((char *)ctx->text.lt.info);
+ XtFree((char *)ctx->text.search);
+ XmuDestroyScanline(ctx->text.update);
+ XtReleaseGC((Widget)ctx, ctx->text.gc);
+}
+
+/*
+ * by the time we are managed (and get this far) we had better
+ * have both a source and a sink
+ */
+static void
+XawTextResize(Widget w)
+{
+ TextWidget ctx = (TextWidget)w;
+
+ PositionVScrollBar(ctx);
+ PositionHScrollBar(ctx);
+ TextSinkResize(ctx->text.sink);
+
+ ctx->text.showposition = True;
+ _XawTextBuildLineTable(ctx, ctx->text.lt.top, True);
+}
+
+/*
+ * This routine allow the application program to Set attributes.
+ */
+/*ARGSUSED*/
+static Boolean
+XawTextSetValues(Widget current, Widget request, Widget cnew,
+ ArgList args, Cardinal *num_args)
+{
+ TextWidget oldtw = (TextWidget)current;
+ TextWidget newtw = (TextWidget)cnew;
+ Boolean redisplay = False;
+ Boolean display_caret = newtw->text.display_caret;
+#ifndef OLDXAW
+ Boolean show_lc = False;
+#endif
+
+ newtw->text.display_caret = oldtw->text.display_caret;
+ _XawTextPrepareToUpdate(newtw);
+ newtw->text.display_caret = display_caret;
+
+ if (oldtw->text.r_margin.left != newtw->text.r_margin.left) {
+ newtw->text.left_margin = newtw->text.margin.left =
+ newtw->text.r_margin.left;
+ if (newtw->text.vbar != NULL) {
+ newtw->text.left_margin += XtWidth(newtw->text.vbar) +
+ XtBorderWidth(newtw->text.vbar);
+ }
+ redisplay = True;
+ }
+
+ if (oldtw->text.scroll_vert != newtw->text.scroll_vert) {
+ if (newtw->text.scroll_vert == XawtextScrollAlways)
+ CreateVScrollBar(newtw);
+ else
+ DestroyVScrollBar(newtw);
+
+ redisplay = True;
+ }
+
+ if (oldtw->text.r_margin.bottom != newtw->text.r_margin.bottom) {
+ newtw->text.margin.bottom = newtw->text.r_margin.bottom;
+ if (newtw->text.hbar != NULL)
+ newtw->text.margin.bottom += newtw->text.hbar->core.height +
+ newtw->text.hbar->core.border_width;
+ redisplay = True;
+ }
+
+ if (oldtw->text.scroll_horiz != newtw->text.scroll_horiz) {
+ if (newtw->text.scroll_horiz == XawtextScrollAlways)
+ CreateHScrollBar(newtw);
+ else
+ DestroyHScrollBar(newtw);
+
+ redisplay = True;
+ }
+
+ if (oldtw->text.source != newtw->text.source) {
+#ifndef OLDXAW
+ show_lc = True;
+ _XawSourceRemoveText(oldtw->text.source, cnew,
+ oldtw->text.source &&
+ XtParent(oldtw->text.source) == cnew);
+ _XawSourceAddText(newtw->text.source, cnew);
+#endif
+ _XawTextSetSource((Widget)newtw, newtw->text.source, newtw->text.lt.top,
+ newtw->text.insertPos);
+ }
+
+ newtw->text.redisplay_needed = False;
+ XtSetValues((Widget)newtw->text.source, args, *num_args);
+ XtSetValues((Widget)newtw->text.sink, args, *num_args);
+
+ if (oldtw->text.wrap != newtw->text.wrap
+ || oldtw->text.lt.top != newtw->text.lt.top
+ || oldtw->text.insertPos != newtw->text.insertPos
+ || oldtw->text.r_margin.right != newtw->text.r_margin.right
+ || oldtw->text.r_margin.top != newtw->text.r_margin.top
+ || oldtw->text.sink != newtw->text.sink
+ || newtw->text.redisplay_needed) {
+ if (oldtw->text.wrap != newtw->text.wrap) {
+ newtw->text.left_margin = newtw->text.margin.left =
+ newtw->text.r_margin.left;
+ if (oldtw->text.lt.top == newtw->text.lt.top)
+ newtw->text.lt.top = SrcScan(newtw->text.source, 0, XawstEOL,
+ XawsdLeft, 1, False);
+ }
+ newtw->text.showposition = True;
+#ifndef OLDXAW
+ show_lc = True;
+ newtw->text.source_changed = SRC_CHANGE_OVERLAP;
+#endif
+ _XawTextBuildLineTable(newtw, newtw->text.lt.top, True);
+ redisplay = True;
+ }
+
+#ifndef OLDXAW
+ if (newtw->text.left_column < 0)
+ newtw->text.left_column = 0;
+ if (newtw->text.right_column < 0)
+ newtw->text.right_column = 0;
+#endif
+
+ _XawTextExecuteUpdate(newtw);
+
+#ifndef OLDXAW
+ if (show_lc)
+ _XawTextSetLineAndColumnNumber(newtw, True);
+#endif
+
+ if (redisplay)
+ _XawTextSetScrollBars(newtw);
+
+ return (redisplay);
+}
+
+/* invoked by the Simple widget's SetValues */
+static Bool
+XawTextChangeSensitive(Widget w)
+{
+ Arg args[1];
+ TextWidget tw = (TextWidget)w;
+
+ (*(&simpleClassRec)->simple_class.change_sensitive)(w);
+
+ XtSetArg(args[0], XtNancestorSensitive,
+ (tw->core.ancestor_sensitive && tw->core.sensitive));
+ if (tw->text.vbar)
+ XtSetValues(tw->text.vbar, args, ONE);
+ if (tw->text.hbar)
+ XtSetValues(tw->text.hbar, args, ONE);
+ return (False);
+}
+
+/*
+ * Function:
+ * XawTextGetValuesHook
+ *
+ * Parameters:
+ * w - Text Widget
+ * args - argument list
+ * num_args - number of args
+ *
+ * Description:
+ * This is a get values hook routine that gets the
+ * values in the text source and sink.
+ */
+static void
+XawTextGetValuesHook(Widget w, ArgList args, Cardinal *num_args)
+{
+ XtGetValues(((TextWidget)w)->text.source, args, *num_args);
+ XtGetValues(((TextWidget)w)->text.sink, args, *num_args);
+}
+
+/*
+ * Function:
+ * FindGoodPosition
+ *
+ * Parameters:
+ * pos - any position
+ *
+ * Description:
+ * Returns a valid position given any postition.
+ *
+ * Returns:
+ * A position between (0 and lastPos)
+ */
+static XawTextPosition
+FindGoodPosition(TextWidget ctx, XawTextPosition pos)
+{
+ if (pos < 0)
+ return (0);
+ return (((pos > ctx->text.lastPos) ? ctx->text.lastPos : pos));
+}
+
+/* Li wrote this so the IM can find a given text position's screen position */
+void
+_XawTextPosToXY(Widget w, XawTextPosition pos, Position *x, Position *y)
+{
+ int line, ix, iy;
+
+ LineAndXYForPosition((TextWidget)w, pos, &line, &ix, &iy);
+ *x = ix;
+ *y = iy;
+}
+
+/*******************************************************************
+The following routines provide procedural interfaces to Text window state
+setting and getting. They need to be redone so than the args code can use
+them. I suggest we create a complete set that takes the context as an
+argument and then have the public version lookup the context and call the
+internal one. The major value of this set is that they have actual application
+clients and therefore the functionality provided is required for any future
+version of Text.
+********************************************************************/
+void
+XawTextDisplay(Widget w)
+{
+ TextWidget ctx = (TextWidget)w;
+
+ if (!XtIsRealized(w))
+ return;
+
+ _XawTextPrepareToUpdate(ctx);
+ ctx->text.clear_to_eol = True;
+ DisplayTextWindow(w);
+ _XawTextExecuteUpdate(ctx);
+}
+
+void
+XawTextSetSelectionArray(Widget w, XawTextSelectType *sarray)
+{
+ ((TextWidget)w)->text.sarray = sarray;
+}
+
+void
+XawTextGetSelectionPos(Widget w, XawTextPosition *left, XawTextPosition *right)
+{
+ *left = ((TextWidget)w)->text.s.left;
+ *right = ((TextWidget)w)->text.s.right;
+}
+
+void
+_XawTextSetSource(Widget w, Widget source,
+ XawTextPosition top, XawTextPosition startPos)
+{
+ TextWidget ctx = (TextWidget)w;
+#ifndef OLDXAW
+ Bool resolve = False;
+#endif
+
+#ifndef OLDXAW
+ if (source != ctx->text.source)
+ _XawSourceRemoveText(ctx->text.source, w, ctx->text.source &&
+ XtParent(ctx->text.source) == w);
+ _XawSourceAddText(source, w);
+
+ if (source != ctx->text.source || ctx->text.insertPos != startPos)
+ resolve = True;
+
+ ctx->text.source_changed = SRC_CHANGE_OVERLAP;
+#endif
+ ctx->text.source = source;
+ ctx->text.s.left = ctx->text.s.right = 0;
+ ctx->text.lastPos = GETLASTPOS;
+ top = FindGoodPosition(ctx, top);
+ startPos = FindGoodPosition(ctx, startPos);
+ ctx->text.insertPos = ctx->text.old_insert = startPos;
+ _XawTextPrepareToUpdate(ctx);
+
+ _XawTextBuildLineTable(ctx, top, True);
+
+ _XawTextExecuteUpdate(ctx);
+#ifndef OLDXAW
+ if (resolve)
+ _XawTextSetLineAndColumnNumber(ctx, True);
+#endif
+}
+
+void
+XawTextSetSource(Widget w, Widget source, XawTextPosition top)
+{
+ _XawTextSetSource(w, source, top, top);
+}
+
+/*
+ * This public routine deletes the text from startPos to endPos in a source and
+ * then inserts, at startPos, the text that was passed. As a side effect it
+ * "invalidates" that portion of the displayed text (if any), so that things
+ * will be repainted properly.
+ */
+int
+XawTextReplace(Widget w, XawTextPosition startPos, XawTextPosition endPos,
+ XawTextBlock *text)
+{
+ TextWidget ctx = (TextWidget)w;
+ int result;
+#ifndef OLDXAW
+ Cardinal i;
+ TextSrcObject src = (TextSrcObject)ctx->text.source;
+
+ for (i = 0; i < src->textSrc.num_text; i++)
+ _XawTextPrepareToUpdate((TextWidget)src->textSrc.text[i]);
+#else
+ _XawTextPrepareToUpdate(ctx);
+#endif
+
+ endPos = FindGoodPosition(ctx, endPos);
+ startPos = FindGoodPosition(ctx, startPos);
+ result = _XawTextReplace(ctx, startPos, endPos, text);
+
+#ifndef OLDXAW
+ for (i = 0; i < src->textSrc.num_text; i++)
+ _XawTextExecuteUpdate((TextWidget)src->textSrc.text[i]);
+#else
+ _XawTextExecuteUpdate(ctx);
+#endif
+
+ return (result);
+}
+
+XawTextPosition
+XawTextTopPosition(Widget w)
+{
+ return (((TextWidget)w)->text.lt.top);
+}
+
+XawTextPosition
+XawTextLastPosition(Widget w)
+{
+ return (((TextWidget)w)->text.lastPos);
+}
+
+void
+XawTextSetInsertionPoint(Widget w, XawTextPosition position)
+{
+ TextWidget ctx = (TextWidget)w;
+
+ _XawTextPrepareToUpdate(ctx);
+ ctx->text.insertPos = FindGoodPosition(ctx, position);
+ ctx->text.showposition = True;
+ ctx->text.from_left = -1;
+
+ _XawTextExecuteUpdate(ctx);
+#ifndef OLDXAW
+ _XawTextSetLineAndColumnNumber(ctx, False);
+#endif
+}
+
+XawTextPosition
+XawTextGetInsertionPoint(Widget w)
+{
+ return (((TextWidget)w)->text.insertPos);
+}
+
+/*
+ * Note: Must walk the selection list in opposite order from TextLoseSelection
+ */
+void
+XawTextUnsetSelection(Widget w)
+{
+ TextWidget ctx = (TextWidget)w;
+
+ while (ctx->text.s.atom_count != 0) {
+ Atom sel = ctx->text.s.selections[ctx->text.s.atom_count - 1];
+
+ if (sel != (Atom) 0) {
+ /*
+ * As selections are lost the atom_count will decrement
+ */
+ if (GetCutBufferNumber(sel) == NOT_A_CUT_BUFFER)
+ XtDisownSelection(w, sel, ctx->text.time);
+ TextLoseSelection(w, &sel); /* In case this is a cut buffer, or
+ XtDisownSelection failed to call us */
+ }
+ }
+}
+
+void
+XawTextSetSelection(Widget w, XawTextPosition left, XawTextPosition right)
+{
+ TextWidget ctx = (TextWidget)w;
+
+ _XawTextPrepareToUpdate(ctx);
+ _XawTextSetSelection(ctx, FindGoodPosition(ctx, left),
+ FindGoodPosition(ctx, right), NULL, 0);
+ _XawTextExecuteUpdate(ctx);
+}
+
+void
+XawTextInvalidate(Widget w, XawTextPosition from, XawTextPosition to)
+{
+ TextWidget ctx = (TextWidget)w;
+
+ from = FindGoodPosition(ctx, from);
+ to = FindGoodPosition(ctx, to);
+ ctx->text.lastPos = GETLASTPOS;
+ _XawTextPrepareToUpdate(ctx);
+ _XawTextNeedsUpdating(ctx, from, to);
+ _XawTextExecuteUpdate(ctx);
+}
+
+/*ARGSUSED*/
+void
+XawTextDisableRedisplay(Widget w)
+{
+ ((TextWidget)w)->text.update_disabled = True;
+ _XawTextPrepareToUpdate((TextWidget)w);
+}
+
+void
+XawTextEnableRedisplay(Widget w)
+{
+ TextWidget ctx = (TextWidget)w;
+ XawTextPosition lastPos;
+
+ if (!ctx->text.update_disabled)
+ return;
+
+ ctx->text.update_disabled = False;
+ lastPos = ctx->text.lastPos = GETLASTPOS;
+ ctx->text.lt.top = FindGoodPosition(ctx, ctx->text.lt.top);
+ ctx->text.insertPos = FindGoodPosition(ctx, ctx->text.insertPos);
+
+ if (ctx->text.s.left > lastPos || ctx->text.s.right > lastPos)
+ ctx->text.s.left = ctx->text.s.right = 0;
+
+ _XawTextExecuteUpdate(ctx);
+}
+
+Widget
+XawTextGetSource(Widget w)
+{
+ return (((TextWidget)w)->text.source);
+}
+
+Widget
+XawTextGetSink(Widget w)
+{
+ return (((TextWidget)w)->text.sink);
+}
+
+void
+XawTextDisplayCaret(Widget w,
+#if NeedWidePrototypes
+ int display_caret
+#else
+ Boolean display_caret
+#endif
+)
+{
+ TextWidget ctx = (TextWidget)w;
+
+ if (XtIsRealized(w)) {
+ _XawTextPrepareToUpdate(ctx);
+ ctx->text.display_caret = display_caret;
+ _XawTextExecuteUpdate(ctx);
+ }
+ else
+ ctx->text.display_caret = display_caret;
+}
+
+/*
+ * Function:
+ * XawTextSearch
+ *
+ * Parameters:
+ * w - text widget
+ * dir - direction to search
+ * text - text block containing info about the string to search for
+ *
+ * Description:
+ * Searches for the given text block.
+ *
+ * Returns:
+ * The position of the text found, or XawTextSearchError on an error
+ */
+XawTextPosition
+XawTextSearch(Widget w,
+#if NeedWidePrototypes
+ int dir,
+#else
+ XawTextScanDirection dir,
+#endif
+ XawTextBlock *text)
+{
+ TextWidget ctx = (TextWidget)w;
+
+ return (SrcSearch(ctx->text.source, ctx->text.insertPos, dir, text));
+}
+
+TextClassRec textClassRec = {
+ /* core */
+ {
+ (WidgetClass)&simpleClassRec, /* superclass */
+ "Text", /* class_name */
+ sizeof(TextRec), /* widget_size */
+ XawTextClassInitialize, /* class_initialize */
+ NULL, /* class_part_init */
+ False, /* class_inited */
+ XawTextInitialize, /* initialize */
+ NULL, /* initialize_hook */
+ XawTextRealize, /* realize */
+ _XawTextActionsTable, /* actions */
+ 0, /* num_actions */
+ resources, /* resources */
+ XtNumber(resources), /* num_resource */
+ NULLQUARK, /* xrm_class */
+ True, /* compress_motion */
+ XtExposeGraphicsExpose | /* compress_exposure */
+ XtExposeNoExpose,
+ True, /* compress_enterleave */
+ False, /* visible_interest */
+ XawTextDestroy, /* destroy */
+ XawTextResize, /* resize */
+ XawTextExpose, /* expose */
+ XawTextSetValues, /* set_values */
+ NULL, /* set_values_hook */
+ XtInheritSetValuesAlmost, /* set_values_almost */
+ XawTextGetValuesHook, /* get_values_hook */
+ NULL, /* accept_focus */
+ XtVersion, /* version */
+ NULL, /* callback_private */
+ _XawDefaultTextTranslations, /* tm_table */
+ XtInheritQueryGeometry, /* query_geometry */
+ XtInheritDisplayAccelerator, /* display_accelerator */
+ NULL, /* extension */
+ },
+ /* simple */
+ {
+ XawTextChangeSensitive, /* change_sensitive */
+ },
+ /* text */
+ {
+ NULL, /* extension */
+ }
+};
+
+WidgetClass textWidgetClass = (WidgetClass)&textClassRec;