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authormarha <marha@users.sourceforge.net>2011-09-12 11:27:51 +0200
committermarha <marha@users.sourceforge.net>2011-09-12 11:27:51 +0200
commitdafebc5bb70303f0b5baf0b087cf4d9a64b5c7f0 (patch)
treebdf833cc6a4fc9035411779e10dd9e8478201885 /libXaw/src/AsciiSink.c
parent0b40f5f4b54453a77f4b09c431f8efc6875da61f (diff)
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Synchronised line endinge with release branch
Diffstat (limited to 'libXaw/src/AsciiSink.c')
-rw-r--r--libXaw/src/AsciiSink.c3896
1 files changed, 1948 insertions, 1948 deletions
diff --git a/libXaw/src/AsciiSink.c b/libXaw/src/AsciiSink.c
index a20cf63d3..56f899c09 100644
--- a/libXaw/src/AsciiSink.c
+++ b/libXaw/src/AsciiSink.c
@@ -1,1948 +1,1948 @@
-/***********************************************************
-
-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.
-
-******************************************************************/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <stdio.h>
-#include <stdlib.h>
-#include <X11/IntrinsicP.h>
-#include <X11/StringDefs.h>
-#include <X11/Xatom.h>
-#include <X11/Xaw/XawInit.h>
-#include <X11/Xaw/AsciiSinkP.h>
-#include <X11/Xaw/AsciiSrcP.h>
-#include <X11/Xaw/TextP.h>
-#include "Private.h"
-
-#ifdef GETLASTPOS
-#undef GETLASTPOS /* We will use our own GETLASTPOS */
-#endif
-
-#define GETLASTPOS \
- XawTextSourceScan(source, 0, XawstAll, XawsdRight, 1, True)
-
-/*
- * Class Methods
- */
-static void XawAsciiSinkClassPartInitialize(WidgetClass);
-static void XawAsciiSinkInitialize(Widget, Widget, ArgList, Cardinal*);
-static void XawAsciiSinkDestroy(Widget);
-static void XawAsciiSinkResize(Widget);
-static Boolean XawAsciiSinkSetValues(Widget, Widget, Widget,
- ArgList, Cardinal*);
-static int MaxLines(Widget, unsigned int);
-static int MaxHeight(Widget, int);
-static void SetTabs(Widget, int, short*);
-static void DisplayText(Widget, int, int,
- XawTextPosition, XawTextPosition, Bool);
-static void InsertCursor(Widget, int, int, XawTextInsertState);
-static void FindPosition(Widget, XawTextPosition, int, int, Bool,
- XawTextPosition*, int*, int*);
-static void FindDistance(Widget, XawTextPosition, int, XawTextPosition, int*,
- XawTextPosition*, int*);
-static void Resolve(Widget, XawTextPosition, int, int, XawTextPosition*);
-static void GetCursorBounds(Widget, XRectangle*);
-#ifndef OLDXAW
-static void AsciiPreparePaint(Widget, int, int,
- XawTextPosition, XawTextPosition, Bool);
-static void AsciiDoPaint(Widget);
-#endif
-
-/*
- * Prototypes
- */
-static void GetGC(AsciiSinkObject);
-static int CharWidth(AsciiSinkObject, XFontStruct*, int, unsigned int);
-static unsigned int PaintText(Widget w, GC gc, int x, int y,
- char *buf, int len, Bool);
-
-/*
- * Defined in TextSink.c
- */
-void _XawTextSinkClearToBackground(Widget, int, int, unsigned, unsigned);
-
-/*
- * Initialization
- */
-#define offset(field) XtOffsetOf(AsciiSinkRec, ascii_sink.field)
-static XtResource resources[] = {
- {
- XtNfont,
- XtCFont,
- XtRFontStruct,
- sizeof(XFontStruct*),
- offset(font),
- XtRString,
- XtDefaultFont
- },
- {
- XtNecho,
- XtCOutput,
- XtRBoolean,
- sizeof(Boolean),
- offset(echo),
- XtRImmediate,
- (XtPointer)True
- },
- {
- XtNdisplayNonprinting,
- XtCOutput,
- XtRBoolean,
- sizeof(Boolean),
- offset(display_nonprinting),
- XtRImmediate,
- (XtPointer)
- True
- },
-};
-#undef offset
-
-#define Superclass (&textSinkClassRec)
-AsciiSinkClassRec asciiSinkClassRec = {
- /* object */
- {
- (WidgetClass)Superclass, /* superclass */
- "AsciiSink", /* class_name */
- sizeof(AsciiSinkRec), /* widget_size */
- XawInitializeWidgetSet, /* class_initialize */
- XawAsciiSinkClassPartInitialize, /* class_part_initialize */
- False, /* class_inited */
- XawAsciiSinkInitialize, /* initialize */
- NULL, /* initialize_hook */
- NULL, /* obj1 */
- NULL, /* obj2 */
- 0, /* obj3 */
- resources, /* resources */
- XtNumber(resources), /* num_resources */
- NULLQUARK, /* xrm_class */
- False, /* obj4 */
- False, /* obj5 */
- False, /* obj6 */
- False, /* obj7 */
- XawAsciiSinkDestroy, /* destroy */
- (XtProc)XawAsciiSinkResize, /* obj8 */
- NULL, /* obj9 */
- XawAsciiSinkSetValues, /* set_values */
- NULL, /* set_values_hook */
- NULL, /* obj10 */
- NULL, /* get_values_hook */
- NULL, /* obj11 */
- XtVersion, /* version */
- NULL, /* callback_private */
- NULL, /* obj12 */
- NULL, /* obj13 */
- NULL, /* obj14 */
- NULL, /* extension */
- },
- /* text_sink */
- {
- DisplayText, /* DisplayText */
- InsertCursor, /* InsertCursor */
- XtInheritClearToBackground, /* ClearToBackground */
- FindPosition, /* FindPosition */
- FindDistance, /* FindDistance */
- Resolve, /* Resolve */
- MaxLines, /* MaxLines */
- MaxHeight, /* MaxHeight */
- SetTabs, /* SetTabs */
- GetCursorBounds, /* GetCursorBounds */
-#ifndef OLDXAW
- NULL /* extension */
-#endif
- },
- /* ascii_sink */
- {
- NULL, /* extension */
- }
-};
-
-WidgetClass asciiSinkObjectClass = (WidgetClass)&asciiSinkClassRec;
-
-/*
- * Implementation
- */
-static void
-XawAsciiSinkClassPartInitialize(WidgetClass wc)
-{
-#ifndef OLDXAW
- AsciiSinkObjectClass cclass = (AsciiSinkObjectClass)wc;
- XrmQuark record_type = XrmPermStringToQuark("TextSink");
- TextSinkExt ext = cclass->text_sink_class.extension;
-
- while (ext) {
- if (ext->record_type == record_type &&
- ext->version == 1) {
- ext->PreparePaint = AsciiPreparePaint;
- ext->DoPaint = AsciiDoPaint;
- break;
- }
- ext = (TextSinkExt)ext->next_extension;
- }
- if (ext == NULL)
- XtError("TextSinkClass: cannot resolve extension.\n");
-#endif
-}
-
-static int
-CharWidth(AsciiSinkObject sink, XFontStruct *font, int x, unsigned int c)
-{
- int width = 0;
-
- if (c == XawLF)
- return (0);
-
- if (c == XawTAB) {
- int i;
- Position *tab;
-
- width = x;
- /* Adjust for Left Margin */
- x -= ((TextWidget)XtParent((Widget)sink))->text.left_margin;
-
- i = 0;
- tab = sink->text_sink.tabs;
- /*CONSTCOND*/
- while (1) {
- if (x >= 0 && x < *tab)
- return (*tab - x);
- /* Start again */
- if (++i >= sink->text_sink.tab_count) {
- x -= *tab;
- i = 0;
- tab = sink->text_sink.tabs;
- if (width == x)
- return (0);
- }
- else
- ++tab;
- }
- /*NOTREACHED*/
- }
-
- if ((c & 0177) < XawSP || c == 0177) {
- if (sink->ascii_sink.display_nonprinting) {
- if (c > 0177) {
- width = CharWidth(sink, font, x, '\\');
- width += CharWidth(sink, font, x, ((c >> 6) & 7) + '0');
- width += CharWidth(sink, font, x, ((c >> 3) & 7) + '0');
- c = (c & 7) + '0';
- }
- else {
- width = CharWidth(sink, font, x, '^');
- if ((c |= 0100) == 0177)
- c = '?';
- }
- }
- else
- c = XawSP;
- }
-
- if (font->per_char
- && (c >= font->min_char_or_byte2 && c <= font->max_char_or_byte2))
- width += font->per_char[c - font->min_char_or_byte2].width;
- else
- width += font->min_bounds.width;
-
- return (width);
-}
-
-#ifndef OLDXAW
-static int
-GetTextWidth(TextWidget ctx, int current_width, XFontStruct *font,
- XawTextPosition from, int length)
-{
- int i, width = 0;
- XawTextBlock block;
- XawTextPosition pos = from;
-
- while (length > 0) {
- pos = XawTextSourceRead(ctx->text.source, from, &block, length);
- length -= pos - from;
- from = pos;
- for (i = 0; i < block.length; i++)
- width += CharWidth((AsciiSinkObject)ctx->text.sink, font,
- current_width + width,
- (unsigned char)block.ptr[i]);
- }
-
- return (width);
-}
-
-static
-void CalculateBearing(TextWidget ctx, XawTextPosition position, int x, int y,
- int ascent, int descent, Bool highlight, Bool right)
-{
-/*
- * Sample case:
- *
- * lbearing| width |rbearing
- * | |
- * | ####
- * | ### |
- * | #### |
- * | #### |
- * | ########## |
- * | #### |
- * | #### |
- * | #### |
- * | #### |
- * |### |
- * #### |
- * | |
- *
- */
- AsciiSinkObject sink = (AsciiSinkObject)ctx->text.sink;
- XawTextAnchor *anchor;
- XawTextEntity *entity;
- XawTextProperty *property;
- XawTextPaintStruct *paint;
- XawTextBlock block;
- XFontStruct *font;
-
- property = NULL;
- if (XawTextSourceAnchorAndEntity(ctx->text.source, position,
- &anchor, &entity) &&
- (property = XawTextSinkGetProperty((Widget)sink,
- entity->property)) != NULL &&
- (property->mask & XAW_TPROP_FONT))
- font = property->font;
- else
- font = sink->ascii_sink.font;
- if (right) {
- if (font->max_bounds.rbearing > 0) {
- int rbearing = font->max_bounds.rbearing - font->max_bounds.width;
- unsigned char c;
-
- (void)XawTextSourceRead(ctx->text.source, position, &block, 1);
- c = *(unsigned char*)block.ptr;
- if (c == '\t' || c == '\n')
- c = ' ';
- else if ((c & 0177) < XawSP || c == 0177) {
- if (sink->ascii_sink.display_nonprinting)
- c = c > 0177 ? (c & 7) + '0' : c + '@';
- else
- c = ' ';
- }
- if (font->per_char &&
- (c >= font->min_char_or_byte2 && c <= font->max_char_or_byte2))
- rbearing = font->per_char[c - font->min_char_or_byte2].rbearing -
- font->per_char[c - font->min_char_or_byte2].width;
- if (rbearing > 0) {
- paint = XtNew(XawTextPaintStruct);
- paint->next = sink->text_sink.paint->bearings;
- sink->text_sink.paint->bearings = paint;
- paint->x = x - (paint->width = CharWidth(sink, font, 0, c));
- paint->y = y + ascent;
- paint->property = property;
- paint->max_ascent = ascent;
- paint->max_descent = descent;
- paint->backtabs = NULL;
- paint->highlight = highlight;
- paint->length = 1;
- paint->text = XtMalloc(1);
- paint->text[0] = c;
- }
- }
- }
- else {
- if (font->min_bounds.lbearing < 0) {
- int lbearing = font->min_bounds.lbearing;
- unsigned char c;
-
- (void)XawTextSourceRead(ctx->text.source, position, &block, 1);
- c = *(unsigned char*)block.ptr;
- if (c == '\t' || c == '\n')
- c = ' ';
- else if ((c & 0177) < XawSP || c == 0177) {
- if (sink->ascii_sink.display_nonprinting)
- c = c > 0177 ? '\\' : c + '^';
- else
- c = ' ';
- }
- if (font->per_char &&
- (c >= font->min_char_or_byte2 && c <= font->max_char_or_byte2))
- lbearing = font->per_char[c - font->min_char_or_byte2].lbearing;
- if (lbearing < 0) {
- paint = XtNew(XawTextPaintStruct);
- paint->next = sink->text_sink.paint->bearings;
- sink->text_sink.paint->bearings = paint;
- paint->x = x;
- paint->width = -CharWidth(sink, font, 0, c);
- paint->y = y + ascent;
- paint->property = property;
- paint->max_ascent = ascent;
- paint->max_descent = descent;
- paint->backtabs = NULL;
- paint->highlight = highlight;
- paint->length = 1;
- paint->text = XtMalloc(1);
- paint->text[0] = c;
- }
- }
- }
-}
-
-static void
-AsciiPreparePaint(Widget w, int y, int line,
- XawTextPosition from, XawTextPosition to, Bool highlight)
-{
- static XmuSegment segment;
- static XmuScanline next;
- static XmuScanline scanline = {0, &segment, &next};
- static XmuArea area = {&scanline};
-
- TextWidget ctx = (TextWidget)XtParent(w);
- AsciiSinkObject sink = (AsciiSinkObject)ctx->text.sink;
- XawTextPosition left, right, pos, pos2, tmp, length;
- XawTextAnchor *anchor;
- XawTextEntity *entity;
- XawTextProperty *property;
- int i, ascent = 0, descent = 0, xl, xr, x = ctx->text.left_margin, bufsiz;
- XawTextBlock block;
- XFontStruct *font;
- XawTextPaintStruct *paint;
-
- if (!sink->ascii_sink.echo)
- return;
-
- /* pass 1: calculate ascent/descent values and x coordinate */
- /* XXX the MAX ascent/descent value should be in the line table XXX */
- /* XXX the x coordinate can be a parameter, but since it is required
- to calculate the ascent/descent, do it here to avoid an extra
- search in the entities */
- pos = tmp = left = ctx->text.lt.info[line].position;
- right = ctx->text.lt.info[line + 1].position;
- right = XawMin(right, ctx->text.lastPos + 1);
- while (pos < right) {
- if (XawTextSourceAnchorAndEntity(ctx->text.source, pos,
- &anchor, &entity)) {
- if ((property = XawTextSinkGetProperty((Widget)sink,
- entity->property)) != NULL &&
- (property->mask & XAW_TPROP_FONT))
- font = property->font;
- else
- font = sink->ascii_sink.font;
- tmp = pos;
- pos = anchor->position + entity->offset + entity->length;
- if ((length = XawMin(from, pos) - tmp) > 0)
- x += GetTextWidth(ctx, x, font, tmp, length);
- ascent = XawMax(font->ascent, ascent);
- descent = XawMax(font->descent, descent);
- }
- else if (anchor) {
- ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
- descent = XawMax(sink->ascii_sink.font->descent, descent);
- while (entity && pos < right) {
- tmp = pos;
- if ((pos = anchor->position + entity->offset) < tmp)
- pos = tmp;
- else {
- if ((length = XawMin(from, pos) - tmp) > 0) {
- x += GetTextWidth(ctx, x, sink->ascii_sink.font, tmp,
- length);
- tmp += length;
- }
- if (pos < right) {
- pos += entity->length;
- if ((property = XawTextSinkGetProperty((Widget)sink,
- entity->property)) != NULL &&
- (property->mask & XAW_TPROP_FONT))
- font = property->font;
- else
- font = sink->ascii_sink.font;
- if ((length = XawMin(from, pos) - tmp) > 0)
- x += GetTextWidth(ctx, x, font, tmp, length);
- ascent = XawMax(font->ascent, ascent);
- descent = XawMax(font->descent, descent);
- }
- }
- entity = entity->next;
- }
-
- if (anchor->entities == NULL) {
- tmp = XawMin(pos, from);
- if ((length = from - tmp) > 0)
- x += GetTextWidth(ctx, x, sink->ascii_sink.font, tmp, length);
- break;
- }
- }
- else {
- tmp = XawMin(pos, from);
- if ((length = from - tmp) > 0)
- x += GetTextWidth(ctx, x, sink->ascii_sink.font, tmp, length);
- ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
- descent = XawMax(sink->ascii_sink.font->descent, descent);
- break;
- }
- }
- if (!ascent)
- ascent = sink->ascii_sink.font->ascent;
- if (!descent)
- descent = sink->ascii_sink.font->descent;
-
- xl = x;
-
- /* pass 2: feed the XawTextPaintStruct lists */
- pos = from;
- while (pos < to) {
- paint = XtNew(XawTextPaintStruct);
- paint->next = sink->text_sink.paint->paint;
- sink->text_sink.paint->paint = paint;
- paint->x = x;
- paint->y = y + ascent;
- paint->property = NULL;
- paint->max_ascent = ascent;
- paint->max_descent = descent;
- paint->backtabs = NULL;
- paint->highlight = highlight;
-
- tmp = pos;
- if (XawTextSourceAnchorAndEntity(ctx->text.source, pos,
- &anchor, &entity)) {
- pos = anchor->position + entity->offset + entity->length;
- if ((paint->property = XawTextSinkGetProperty((Widget)sink,
- entity->property)) != NULL &&
- (paint->property->mask & XAW_TPROP_FONT))
- font = paint->property->font;
- else
- font = sink->ascii_sink.font;
- }
- else {
- if (anchor) {
- while (entity && anchor->position + entity->offset < pos)
- entity = entity->next;
- if (entity)
- pos = anchor->position + entity->offset;
- else
- pos = to;
- }
- else
- pos = to;
- font = sink->ascii_sink.font;
- }
- pos = XawMin(pos, to);
- length = pos - tmp;
-
- paint->text = XtMalloc(bufsiz = pos - tmp + 4);
- paint->length = 0;
- segment.x1 = x;
-
- pos2 = tmp;
- while (length > 0) {
- pos2 = XawTextSourceRead(ctx->text.source, tmp, &block, length);
- length = pos - pos2;
- tmp = pos2;
- for (i = 0; i < block.length; i++) {
- unsigned char c = (unsigned char)block.ptr[i];
-
- if (paint->length + 4 > bufsiz)
- paint->text = XtRealloc(paint->text, bufsiz += 32);
- paint->text[paint->length] = c;
- if (c == '\n') {
- x += CharWidth(sink, font, 0, ' ');
- continue;
- }
- if (c == '\t') {
- x += XTextWidth(font, paint->text, paint->length);
- segment.x2 = x + CharWidth(sink, font, x, '\t');
-
- if (XmuValidSegment(&segment)) {
- if (!highlight && (paint->property &&
- (paint->property->mask & XAW_TPROP_BACKGROUND))) {
- if (ascent > font->ascent) {
- scanline.y = y;
- next.y = y + ascent - font->ascent;
- XmuAreaOr(sink->text_sink.paint->clip, &area);
- }
- if (descent >= font->descent) {
- scanline.y = y + ascent + font->descent;
- next.y = scanline.y + descent - font->descent + 1;
- XmuAreaOr(sink->text_sink.paint->clip, &area);
- }
- if (paint->backtabs == NULL)
- paint->backtabs = XmuCreateArea();
- scanline.y = y + ascent - font->ascent;
- next.y = y + ascent + font->descent;
- XmuAreaOr(paint->backtabs, &area);
- }
- else {
- scanline.y = y;
- next.y = ctx->text.lt.info[line + 1].y;
- if (highlight) {
- if (!sink->text_sink.paint->hightabs)
- sink->text_sink.paint->hightabs =
- XmuCreateArea();
- XmuAreaOr(sink->text_sink.paint->hightabs, &area);
- }
- else
- XmuAreaOr(sink->text_sink.paint->clip, &area);
- }
- }
-
- paint->width = segment.x2 - segment.x1;
- x = segment.x1 = segment.x2;
-
- if (paint->length == 0) {
- paint->x = x;
- continue;
- }
- paint->text = XtRealloc(paint->text, paint->length);
- property = paint->property;
- paint = XtNew(XawTextPaintStruct);
- paint->next = sink->text_sink.paint->paint;
- sink->text_sink.paint->paint = paint;
- paint->x = x;
- paint->y = y + ascent;
- paint->property = property;
- paint->max_ascent = ascent;
- paint->max_descent = descent;
- paint->backtabs = NULL;
- paint->highlight = highlight;
- paint->text = XtMalloc(bufsiz = pos - tmp - length +
- block.length - i + 4);
- paint->length = 0;
- continue;
- }
- if ((c & 0177) < XawSP || c == 0177) {
- if (sink->ascii_sink.display_nonprinting) {
- if (c > 0177) {
- paint->text[paint->length++] = '\\';
- paint->text[paint->length++] = ((c >> 6) & 7) + '0';
- paint->text[paint->length++] = ((c >> 3) & 7) + '0';
- paint->text[paint->length] = (c & 7) + '0';
- }
- else {
- c |= 0100;
- paint->text[paint->length++] = '^';
- paint->text[paint->length] = c == 0177 ? '?' : c;
- }
- }
- else
- paint->text[paint->length] = ' ';
- }
- paint->length++;
- }
- }
-
- x += XTextWidth(font, paint->text, paint->length);
- segment.x2 = x;
- if (XmuValidSegment(&segment)) {
- /* erase only what really is needed */
- /*if (!highlight || (paint->property &&
- (paint->property->mask & XAW_TPROP_BACKGROUND))) {
- if (ascent > font->ascent) {
- scanline.y = y;
- next.y = y + ascent - font->ascent;
- XmuAreaOr(sink->text_sink.paint->clip, &area);
- }
- if (descent > font->descent) {
- scanline.y = y + ascent + font->descent;
- next.y = scanline.y + descent - font->descent;
- XmuAreaOr(sink->text_sink.paint->clip, &area);
- }
- }
- else*/ {
- scanline.y = y;
- next.y = ctx->text.lt.info[line + 1].y;
- XmuAreaOr(sink->text_sink.paint->clip, &area);
- }
- }
-
- paint->width = x - segment.x1;
- }
-
- xr = x;
-
- /* pass 3: bearing clipping */
- if (left < from) {
- CalculateBearing(ctx, from - 1, xl, y, ascent, descent, highlight, True);
- if (ctx->text.s.left < ctx->text.s.right) {
- if (ctx->text.s.right == from)
- CalculateBearing(ctx, from, xl, y, ascent, descent, True, False);
- else if (ctx->text.s.left == from)
- CalculateBearing(ctx, from, xl, y, ascent, descent, False, False);
- }
- }
- right = XawMin(right, ctx->text.lastPos);
- if (right >= to && to > from) {
- if (to < right)
- CalculateBearing(ctx, to, xr, y, ascent, descent, highlight, False);
- if (ctx->text.s.left < ctx->text.s.right) {
- if (ctx->text.s.right == to)
- CalculateBearing(ctx, to - 1, xr, y, ascent, descent, False, True);
- else if (ctx->text.s.left == to)
- CalculateBearing(ctx, to - 1, xr, y, ascent, descent, True, True);
- }
- }
-}
-
-static int
-qcmp_paint_struct(_Xconst void *left, _Xconst void *right)
-{
- return ((*(XawTextPaintStruct**)left)->property -
- (*(XawTextPaintStruct**)right)->property);
-}
-
-static void
-AsciiDoPaint(Widget w)
-{
- TextWidget ctx = (TextWidget)XtParent(w);
- AsciiSinkObject sink = (AsciiSinkObject)ctx->text.sink;
- XmuScanline *scan;
- XmuSegment *seg;
- XawTextPaintList *list = sink->text_sink.paint;
-#if 0
- XawTextPaintStruct *base, *head;
-#endif
- XawTextPaintStruct *paint = list->paint;
- XawTextProperty *property;
- XFontStruct *font = NULL;
- XRectangle *rects;
- int n_rects, i_rects;
- GC gc;
- Bool highlight;
- XRectangle rect;
- int width, height, line_width = -1;
- XGCValues values;
-
- /* pass 1: clear clipping areas */
- /* XXX Don't use XDrawImageString because the font may be italic, and
- will get incorrectly drawn. Probably, it could be a good idea to
- check if this is the case, and do special processing. But this
- will need to be checked if required. */
- for (scan = list->clip->scanline; scan && scan->next; scan = scan->next)
- for (seg = scan->segment; seg; seg = seg->next)
- _XawTextSinkClearToBackground(ctx->text.sink,
- seg->x1, scan->y,
- seg->x2 - seg->x1,
- scan->next->y - scan->y);
-
- /* pass 2: optimize drawing list to avoid too much GC change requests */
- /* XXX this assumes there will not exist entities drawn over other
- entities. */
-#if 0
- while (paint) {
- base = paint;
- head = paint->next;
- while (head) {
- if (head->property == paint->property) {
- base->next = head->next;
- head->next = paint->next;
- paint->next = head;
- paint = head;
- }
- base = head;
- head = head->next;
- }
- paint = paint->next;
- }
-#endif
- if (paint && paint->next) {
- XawTextPaintStruct **paints;
- int i = 0, n_paints = 0;
-
- while (paint) {
- paint = paint->next;
- ++n_paints;
- }
- paints = (XawTextPaintStruct**)
- XtMalloc(n_paints * sizeof(XawTextPaintStruct));
- paint = list->paint;
- while (paint) {
- paints[i++] = paint;
- paint = paint->next;
- }
- qsort((void*)paints, n_paints, sizeof(XawTextPaintStruct*),
- qcmp_paint_struct);
- list->paint = paints[0];
- for (i = 0; i < n_paints - 1; i++)
- paints[i]->next = paints[i + 1];
- paints[i]->next = NULL;
- XtFree((XtPointer)paints);
- }
-
- /* pass 3: clip gc */
- gc = sink->ascii_sink.normgc;
-
- rect.x = ctx->text.r_margin.left;
- rect.y = ctx->text.r_margin.top;
- width = (int)XtWidth(ctx) - RHMargins(ctx);
- height = (int)XtHeight(ctx) - RVMargins(ctx);
- rect.width = width;
- rect.height = height;
- if (width >= 0 && height >= 0)
- XSetClipRectangles(XtDisplay((Widget)ctx), gc,
- 0, 0, &rect, 1, Unsorted);
- else
- XSetClipMask(XtDisplay((Widget)ctx), gc, None);
-
- /* pass 4: draw backgrounds */
- paint = list->paint;
- property = NULL;
- rects = NULL;
- i_rects = n_rects = 0;
- while (paint) {
- if (paint->property && (paint->property->mask & XAW_TPROP_BACKGROUND)) {
- if (property != paint->property) {
- if (i_rects)
- XFillRectangles(XtDisplay(ctx), XtWindow(ctx), gc,
- rects, i_rects);
- i_rects = 0;
- property = paint->property;
- if (property->mask & XAW_TPROP_FONT)
- font = property->font;
- else
- font = sink->ascii_sink.font;
- XSetForeground(XtDisplay(ctx), gc, property->background);
- }
- if (i_rects <= n_rects)
- rects = (XRectangle*)
- XtRealloc((XtPointer)rects, sizeof(XRectangle) *
- ++n_rects);
- rects[i_rects].x = paint->x;
- rects[i_rects].y = paint->y - font->ascent;
- rects[i_rects].width = paint->width;
- rects[i_rects++].height = font->ascent + font->descent;
-
- if (paint->backtabs) {
- for (scan = paint->backtabs->scanline; scan && scan->next;
- scan = scan->next)
- for (seg = scan->segment; seg; seg = seg->next) {
- if (i_rects <= n_rects)
- rects = (XRectangle*)
- XtRealloc((XtPointer)rects, sizeof(XRectangle) *
- ++n_rects);
- rects[i_rects].x = seg->x1;
- rects[i_rects].y = scan->y;
- rects[i_rects].width = seg->x2 - seg->x1;
- rects[i_rects++].height = scan->next->y - scan->y;
- }
- }
-
-
- }
- paint = paint->next;
- }
- if (i_rects)
- XFillRectangles(XtDisplay(ctx), XtWindow(ctx), gc, rects, i_rects);
-
- paint = list->paint;
- i_rects = 0;
- while (paint) {
- if (paint->highlight) {
- if (i_rects == 0)
- XSetForeground(XtDisplay(ctx), gc, sink->text_sink.cursor_color);
- if (i_rects <= n_rects)
- rects = (XRectangle*)
- XtRealloc((XtPointer)rects, sizeof(XRectangle) *
- ++n_rects);
- rects[i_rects].x = paint->x;
- rects[i_rects].y = paint->y - paint->max_ascent;
- rects[i_rects].width = paint->width;
- rects[i_rects++].height = paint->max_ascent + paint->max_descent + 1;
- }
- paint = paint->next;
- }
- if (list->hightabs) {
- for (scan = list->hightabs->scanline; scan && scan->next;
- scan = scan->next)
- for (seg = scan->segment; seg; seg = seg->next) {
- if (i_rects == 0)
- XSetForeground(XtDisplay(ctx), gc,
- sink->text_sink.cursor_color);
- if (i_rects <= n_rects)
- rects = (XRectangle*)
- XtRealloc((XtPointer)rects, sizeof(XRectangle) *
- ++n_rects);
- rects[i_rects].x = seg->x1;
- rects[i_rects].y = scan->y;
- rects[i_rects].width = seg->x2 - seg->x1;
- rects[i_rects++].height = scan->next->y - scan->y;
- }
- }
-
- if (i_rects)
- XFillRectangles(XtDisplay(ctx), XtWindow(ctx), gc, rects, i_rects);
- if (rects)
- XtFree((XtPointer)rects);
-
- /* pass 5: draw text! */
- paint = list->paint;
- if (paint && (property = paint->property) == NULL) {
- font = sink->ascii_sink.font;
- XSetFont(XtDisplay(ctx), gc, font->fid);
- if (!paint->highlight)
- XSetForeground(XtDisplay(ctx), gc, sink->text_sink.foreground);
- }
- else
- property = NULL;
- highlight = False;
- while (paint) {
- if (!highlight && paint->highlight)
- XSetForeground(XtDisplay(ctx), gc, sink->text_sink.background);
- if (highlight || paint->highlight || paint->property != property) {
- if (!paint->property || !(paint->property->mask & XAW_TPROP_FONT))
- font = sink->ascii_sink.font;
- else
- font = paint->property->font;
- XSetFont(XtDisplay(ctx), gc, font->fid);
- if (!paint->highlight) {
- if (!paint->property ||
- !(paint->property->mask & XAW_TPROP_FOREGROUND))
- XSetForeground(XtDisplay(ctx), gc,
- sink->text_sink.foreground);
- else
- XSetForeground(XtDisplay(ctx), gc,
- paint->property->foreground);
- }
- highlight = paint->highlight;
- property = paint->property;
- }
-
- if (paint->x < XtWidth(ctx) && paint->x + paint->width > 0) {
- XDrawString(XtDisplay(ctx), XtWindow(ctx), gc, paint->x, paint->y,
- paint->text, paint->length);
- if (property) {
- if (property->mask & XAW_TPROP_UNDERLINE) {
- if (line_width != property->underline_thickness) {
- values.line_width = line_width =
- property->underline_thickness;
- XChangeGC(XtDisplay(ctx), gc, GCLineWidth, &values);
- }
-
- XDrawLine(XtDisplay(ctx), XtWindow(ctx), gc, paint->x,
- paint->y + property->underline_position,
- paint->x + paint->width,
- paint->y + property->underline_position);
- }
- if (property->mask & XAW_TPROP_OVERSTRIKE) {
- if (line_width != property->underline_thickness) {
- values.line_width = line_width =
- property->underline_thickness;
- XChangeGC(XtDisplay(ctx), gc, GCLineWidth, &values);
- }
-
- XDrawLine(XtDisplay(ctx), XtWindow(ctx), gc, paint->x,
- paint->y - (font->ascent>>1) + (font->descent>>1),
- paint->x + paint->width,
- paint->y - (font->ascent>>1) + (font->descent>>1));
- }
- }
- }
-
- paint = paint->next;
- }
-
- /* pass 6: bearing clipping */
- /* dont care on order of drawing or caching of state (by now) */
- paint = list->bearings;
- while (paint) {
- XRectangle rect;
-
- if (paint->highlight)
- XSetForeground(XtDisplay(ctx), gc, sink->text_sink.background);
- if (!paint->property || !(paint->property->mask & XAW_TPROP_FONT))
- font = sink->ascii_sink.font;
- else
- font = paint->property->font;
- XSetFont(XtDisplay(ctx), gc, font->fid);
- if (!paint->highlight) {
- if (!paint->property ||
- !(paint->property->mask & XAW_TPROP_FOREGROUND))
- XSetForeground(XtDisplay(ctx), gc, sink->text_sink.foreground);
- else
- XSetForeground(XtDisplay(ctx), gc, paint->property->foreground);
- }
- if (paint->x < XtWidth(ctx) && paint->x + paint->width > 0) {
- rect.x = paint->x + paint->width;
- rect.width = XawAbs(paint->width); /* more than enough */
- rect.y = paint->y - font->ascent;
- rect.height = rect.y + font->ascent + font->descent;
- XSetClipRectangles(XtDisplay((Widget)ctx), gc,
- 0, 0, &rect, 1, Unsorted);
- XDrawString(XtDisplay(ctx), XtWindow(ctx), gc, paint->x, paint->y,
- paint->text, paint->length);
- }
- paint = paint->next;
- }
-}
-#endif
-
-/*
- * Function:
- * PaintText
- *
- * Parameters:
- * w - text sink object
- * gc - gc to paint text with
- * x - location to paint the text
- * y - ""
- * buf - buffer and length of text to paint.
- * len - ""
- * clear_bg - clear background before drawing ?
- *
- * Description:
- * Actually paints the text into the window.
- *
- * Returns:
- * the width of the text painted
- */
-static unsigned int
-PaintText(Widget w, GC gc, int x, int y, char *buf, int len, Bool clear_bg)
-{
- AsciiSinkObject sink = (AsciiSinkObject)w;
- TextWidget ctx = (TextWidget)XtParent(w);
- int width = XTextWidth(sink->ascii_sink.font, buf, len);
-
- if ((x > XtWidth(ctx)) || width <= -x) /* Don't draw if we can't see it */
- return (width);
-
- if (clear_bg) {
- _XawTextSinkClearToBackground(w, x, y - sink->ascii_sink.font->ascent,
- width, sink->ascii_sink.font->ascent
- + sink->ascii_sink.font->descent);
- XDrawString(XtDisplay(ctx), XtWindow(ctx), gc, x, y, buf, len);
- }
- else
- XDrawImageString(XtDisplay(ctx), XtWindow(ctx), gc, x, y, buf, len);
-
- return (width);
-}
-
-static void
-DisplayText(Widget w, int x, int y,
- XawTextPosition pos1, XawTextPosition pos2, Bool highlight)
-{
- TextWidget ctx = (TextWidget)XtParent(w);
- AsciiSinkObject sink = (AsciiSinkObject)w;
- XFontStruct *font = sink->ascii_sink.font;
- Widget source = XawTextGetSource(XtParent(w));
- unsigned char buf[260];
- int j, k;
- XawTextBlock blk;
- GC gc, invgc, tabgc;
- int max_x;
- Bool clear_bg;
-
- if (!sink->ascii_sink.echo || !ctx->text.lt.lines)
- return;
-
- max_x = (int)XtWidth(ctx) - ctx->text.r_margin.right;
- clear_bg = !highlight && ctx->core.background_pixmap != XtUnspecifiedPixmap;
-
- gc = highlight ? sink->ascii_sink.invgc : sink->ascii_sink.normgc;
- invgc = highlight ? sink->ascii_sink.normgc : sink->ascii_sink.invgc;
-
- if (highlight && sink->ascii_sink.xorgc)
- tabgc = sink->ascii_sink.xorgc;
- else
- tabgc = invgc;
-
- y += sink->ascii_sink.font->ascent;
- for (j = 0; pos1 < pos2;) {
- pos1 = XawTextSourceRead(source, pos1, &blk, pos2 - pos1);
- for (k = 0; k < blk.length; k++) {
- if (j >= sizeof(buf) - 4) { /* buffer full, dump the text */
- if ((x += PaintText(w, gc, x, y, (char*)buf, j, clear_bg))
- >= max_x)
- return;
- j = 0;
- }
- buf[j] = blk.ptr[k];
- if (buf[j] == XawLF) /* line feeds ('\n') are not printed */
- continue;
-
- else if (buf[j] == '\t') {
- int width;
-
- if (j != 0
- && (x += PaintText(w, gc, x, y, (char*)buf, j, clear_bg))
- >= max_x)
- return;
-
- if ((width = CharWidth(sink, font, x, '\t')) > -x) {
- if (clear_bg)
- _XawTextSinkClearToBackground(w, x, y-font->ascent, width,
- font->ascent+font->descent);
- else
- XFillRectangle(XtDisplayOfObject(w), XtWindowOfObject(w),
- tabgc, x, y - font->ascent, width,
- font->ascent + font->descent);
- }
-
- if ((x += width) >= max_x)
- return;
-
- j = -1;
- }
- else if ((buf[j] & 0177) < XawSP || buf[j] == 0177) {
- if (sink->ascii_sink.display_nonprinting) {
- unsigned char c = buf[j];
-
- if (c > 0177) {
- buf[j++] = '\\';
- buf[j++] = ((c >> 6) & 7) + '0';
- buf[j++] = ((c >> 3) & 7) + '0';
- buf[j] = (c & 7) + '0';
- }
- else {
- c |= 0100;
- buf[j++] = '^';
- buf[j] = c == 0177 ? '?' : c;
- }
- }
- else
- buf[j] = ' ';
- }
- j++;
- }
- }
-
- if (j > 0)
- (void)PaintText(w, gc, x, y, (char*)buf, j, clear_bg);
-}
-
-/*
- * Function:
- * GetCursorBounds
- *
- * Parameters:
- * w - text sink object
- * rect - X rectangle to return the cursor bounds
- *
- * Description:
- * Returns the size and location of the cursor.
- */
-static void
-GetCursorBounds(Widget w, XRectangle *rect)
-{
- AsciiSinkObject sink = (AsciiSinkObject)w;
- XFontStruct *font = sink->ascii_sink.font;
- unsigned char ch;
-#ifndef OLDXAW
- TextWidget ctx = (TextWidget)XtParent(w);
- XawTextBlock block;
- XawTextAnchor *anchor;
- XawTextEntity *entity;
- XawTextProperty *property;
-
- if (XawTextSourceAnchorAndEntity(XawTextGetSource(XtParent(w)),
- sink->ascii_sink.cursor_position,
- &anchor, &entity)) {
- if ((property = XawTextSinkGetProperty((Widget)sink,
- entity->property)) != NULL &&
- (property->mask & XAW_TPROP_FONT))
- font = property->font;
- }
- (void)XawTextSourceRead(XawTextGetSource((Widget)ctx),
- ctx->text.insertPos, &block, 1);
- if (!block.length || block.ptr[0] == '\n' || block.ptr[0] == '\t')
- ch = ' ';
- else if ((*((unsigned char*)block.ptr) & 0177) < XawSP ||
- *(unsigned char*)block.ptr == 0177) {
- if (sink->ascii_sink.display_nonprinting)
- ch = *((unsigned char*)block.ptr) > 0177 ? '\\' : '^';
- else
- ch = ' ';
- }
- else
- ch = *(unsigned char*)block.ptr;
-#else
- ch = ' ';
-#endif
-
- rect->width = CharWidth(sink, font, 0, ch);
- rect->height = font->descent + font->ascent + 1;
-
- rect->x = sink->ascii_sink.cursor_x;
- rect->y = sink->ascii_sink.cursor_y - font->ascent;
-}
-
-/* this function is required to support diferent fonts and correctly place
- * the cursor. There are better ways to calculate the base line, but there is
- * no place/code (yet) to store this information.
- */
-static int
-FindCursorY(TextWidget ctx, XawTextPosition position)
-{
- int y, line, ascent;
- AsciiSinkObject sink = (AsciiSinkObject)ctx->text.sink;
-#ifndef OLDXAW
- XawTextAnchor *anchor;
- XawTextEntity *entity;
- XawTextProperty *property;
- XawTextPosition left, right;
-#endif
-
- for (line = 0; line < ctx->text.lt.lines; line++)
- if (position < ctx->text.lt.info[line + 1].position)
- break;
-
- y = ctx->text.lt.info[line].y;
-#ifndef OLDXAW
- ascent = 0;
- left = ctx->text.lt.info[line].position;
- right = ctx->text.lt.info[line + 1].position;
- right = XawMin(right, ctx->text.lastPos + 1);
- while (left < right) {
- if (XawTextSourceAnchorAndEntity(ctx->text.source, left,
- &anchor, &entity)) {
- if ((property = XawTextSinkGetProperty((Widget)sink,
- entity->property)) != NULL &&
- (property->mask & XAW_TPROP_FONT))
- ascent = XawMax(property->font->ascent, ascent);
- else
- ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
- left = anchor->position + entity->offset + entity->length;
- }
- else if (anchor) {
- ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
- while (entity) {
- XawTextPosition tmp = anchor->position + entity->offset + entity->length;
-
- if (tmp > left && tmp < right) {
- left = tmp;
- if ((property = XawTextSinkGetProperty((Widget)sink,
- entity->property)) != NULL &&
- (property->mask & XAW_TPROP_FONT))
- ascent = XawMax(property->font->ascent, ascent);
- else
- ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
- }
- entity = entity->next;
- }
- if (entity == NULL)
- break;
- }
- else {
- ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
- break;
- }
- }
- if (!ascent)
- ascent = sink->ascii_sink.font->ascent;
-#else
- ascent = sink->ascii_sink.font->ascent;
-#endif
-
- return (y + ascent);
-}
-
-static void
-InsertCursor(Widget w, int x, int y, XawTextInsertState state)
-{
- AsciiSinkObject sink = (AsciiSinkObject)w;
- XFontStruct *font = sink->ascii_sink.font;
- TextWidget ctx = (TextWidget)XtParent(w);
- XawTextPosition position = XawTextGetInsertionPoint((Widget)ctx);
- Boolean overflow = (x & 0xffff8000) != 0;
-#ifndef OLDXAW
- XawTextAnchor *anchor;
- XawTextEntity *entity;
- XawTextProperty *property;
-#endif
-
- if (XtIsRealized((Widget)ctx)) {
- int fheight;
- XawTextBlock block;
- XawTextPosition selection_start, selection_end;
- Boolean has_selection;
-
- if (!sink->ascii_sink.echo) {
- if (sink->ascii_sink.laststate != state) {
- int width = CharWidth(sink, font, 0, ' ') - 1;
-
- x = ctx->text.margin.left;
- y = ctx->text.margin.top;
- font = sink->ascii_sink.font;
- fheight = font->ascent + font->descent;
- if (state == XawisOn) {
- if (ctx->text.hasfocus)
- XFillRectangle(XtDisplay(ctx), XtWindow(ctx),
- sink->ascii_sink.xorgc, x, y,
- width + 1, fheight + 1);
- else
- XDrawRectangle(XtDisplay(ctx), XtWindow(ctx),
- sink->ascii_sink.xorgc, x, y,
- width, fheight);
-
- }
- else
- _XawTextSinkClearToBackground(w, x, y,
- width + 1, fheight + 1);
- }
- sink->ascii_sink.cursor_x = x;
- sink->ascii_sink.cursor_y = y;
- sink->ascii_sink.laststate = state;
- return;
- }
-
-
- XawTextGetSelectionPos((Widget)ctx, &selection_start, &selection_end);
- has_selection = selection_start != selection_end;
-
- if (sink->ascii_sink.laststate != state) {
- unsigned char ch;
-
-#ifndef OLDXAW
- if (XawTextSourceAnchorAndEntity(ctx->text.source,
- position, &anchor, &entity) &&
- (property = XawTextSinkGetProperty((Widget)sink,
- entity->property)) != NULL &&
- (property->mask & XAW_TPROP_FONT))
- font = property->font;
- else
- font = sink->ascii_sink.font;
-#endif
-
- fheight = font->ascent + font->descent;
- (void)XawTextSourceRead(XawTextGetSource((Widget)ctx),
- position, &block, 1);
- if (!block.length || block.ptr[0] == '\n' || block.ptr[0] == '\t')
- ch = ' ';
- else if ((*((unsigned char*)block.ptr) & 0177) < XawSP
- || *(unsigned char*)block.ptr == 0177) {
- if (sink->ascii_sink.display_nonprinting)
- ch = *((unsigned char*)block.ptr) > 0177 ? '\\' : '^';
- else
- ch = ' ';
- }
- else
- ch = *(unsigned char*)block.ptr;
-
- y = FindCursorY(ctx, position);
- if (ctx->text.hasfocus && !has_selection)
- XFillRectangle(XtDisplay(ctx), XtWindow(ctx),
- sink->ascii_sink.xorgc, x, y - font->ascent,
- CharWidth(sink, font, 0, ch), fheight + 1);
- else
- XDrawRectangle(XtDisplay(ctx), XtWindow(ctx),
- sink->ascii_sink.xorgc, x, y - font->ascent,
- CharWidth(sink, font, 0, ch) - 1, fheight);
- }
- }
-
- sink->ascii_sink.cursor_x = overflow ? -16384 : x;
- sink->ascii_sink.cursor_y = y;
- sink->ascii_sink.laststate = state;
- sink->ascii_sink.cursor_position = position;
-}
-
-/*
- * Given two positions, find the distance between them
- */
-static void
-FindDistance(Widget w, XawTextPosition fromPos, int fromx,
- XawTextPosition toPos, int *resWidth,
- XawTextPosition *resPos, int *resHeight)
-{
-#ifndef OLDXAW
- AsciiSinkObject sink = (AsciiSinkObject)w;
- TextWidget ctx = (TextWidget)XtParent(w);
- XFontStruct *font = sink->ascii_sink.font;
- Widget source = ctx->text.source;
- XawTextPosition idx, pos;
- unsigned char c;
- XawTextBlock blk;
- int i, rWidth, ascent = 0, descent = 0;
- XawTextAnchor *anchor;
- XawTextEntity *entity;
- XawTextProperty *property;
- Cardinal length;
- Bool done = False;
-
- pos = idx = fromPos;
- rWidth = 0;
- c = 0;
-
- while (!done) {
- if (XawTextSourceAnchorAndEntity(source, pos, &anchor, &entity)) {
- length = anchor->position + entity->offset + entity->length;
- length = XawMin(toPos, length) - pos;
- if ((property = XawTextSinkGetProperty((Widget)sink,
- entity->property)) != NULL &&
- (property->mask & XAW_TPROP_FONT))
- font = property->font;
- else
- font = sink->ascii_sink.font;
- }
- else {
- if (anchor) {
- while (entity && anchor->position + entity->offset < pos)
- entity = entity->next;
- if (entity) {
- length = anchor->position + entity->offset;
- length = XawMin(toPos, length) - pos;
- }
- else
- length = XawMin(toPos - pos, 4096);
- }
- else
- length = XawMin(toPos - pos, 4096);
- font = sink->ascii_sink.font;
- }
-
- ascent = XawMax(font->ascent, ascent);
- descent = XawMax(font->descent, descent);
-
- pos = XawTextSourceRead(source, pos, &blk, length);
- if (blk.length == 0 && pos == idx) /* eof reached */
- break;
-
- idx = blk.firstPos;
- for (i = 0; idx < toPos; i++, idx++) {
- if (i >= blk.length)
- break;
- c = blk.ptr[i];
- rWidth += CharWidth(sink, font, fromx + rWidth, c);
- if (c == XawLF) {
- idx++;
- done = True;
- break;
- }
- }
- if (idx >= toPos)
- break;
- }
-
- *resPos = idx;
- *resWidth = rWidth;
- *resHeight = ascent + descent + 1;
-#else
- AsciiSinkObject sink = (AsciiSinkObject)w;
- TextWidget ctx = (TextWidget)XtParent(w);
- XFontStruct *font = sink->ascii_sink.font;
- Widget source = ctx->text.source;
- XawTextPosition idx, pos;
- unsigned char c;
- XawTextBlock blk;
- int i, rWidth;
-
- pos = XawTextSourceRead(source, fromPos, &blk, toPos - fromPos);
- rWidth = 0;
- for (i = 0, idx = fromPos; idx < toPos; i++, idx++) {
- if (i >= blk.length) {
- i = 0;
- pos = XawTextSourceRead(source, pos, &blk, toPos - pos);
- if (blk.length == 0)
- break;
- }
- c = blk.ptr[i];
- rWidth += CharWidth(sink, font, fromx + rWidth, c);
- if (c == XawLF) {
- idx++;
- break;
- }
- }
-
- *resPos = idx;
- *resWidth = rWidth;
- *resHeight = font->ascent + font->descent + 1;
-#endif
-}
-
-static void
-FindPosition(Widget w, XawTextPosition fromPos, int fromx, int width,
- Bool stopAtWordBreak, XawTextPosition *resPos,
- int *resWidth, int *resHeight)
-{
-#ifndef OLDXAW
- AsciiSinkObject sink = (AsciiSinkObject)w;
- TextWidget ctx = (TextWidget)XtParent(w);
- Widget source = ctx->text.source;
- XFontStruct *font = sink->ascii_sink.font;
- XawTextPosition idx, pos, whiteSpacePosition = 0;
- int i, lastWidth, whiteSpaceWidth, rWidth, ascent = 0, descent = 0;
- Boolean whiteSpaceSeen;
- unsigned char c;
- XawTextBlock blk;
- XawTextAnchor *anchor;
- XawTextEntity *entity;
- XawTextProperty *property;
- Cardinal length;
- Bool done = False;
-
- pos = idx = fromPos;
- rWidth = lastWidth = whiteSpaceWidth = 0;
- whiteSpaceSeen = False;
- c = 0;
-
- while (!done) {
- font = sink->ascii_sink.font;
- if (XawTextSourceAnchorAndEntity(source, pos, &anchor, &entity)) {
- length = anchor->position + entity->offset + entity->length - pos;
- if ((property = XawTextSinkGetProperty((Widget)sink,
- entity->property)) != NULL &&
- (property->mask & XAW_TPROP_FONT))
- font = property->font;
- }
- else {
- if (anchor) {
- while (entity && anchor->position + entity->offset < pos)
- entity = entity->next;
- if (entity)
- length = anchor->position + entity->offset - pos;
- else
- length = 4096;
- }
- else
- length = 4096;
- }
-
- ascent = XawMax(font->ascent, ascent);
- descent = XawMax(font->descent, descent);
-
- pos = XawTextSourceRead(source, pos, &blk, length);
- if (blk.length == 0 && pos == idx) /* eof reached */
- break;
-
- idx = blk.firstPos;
- for (i = 0; rWidth <= width && i < blk.length; i++, idx++) {
- c = blk.ptr[i];
- lastWidth = rWidth;
- rWidth += CharWidth(sink, font, fromx + rWidth, c);
-
- if (c == XawLF) {
- idx++;
- done = True;
- break;
- }
- else if ((c == XawSP || c == XawTAB) && rWidth <= width) {
- whiteSpaceSeen = True;
- whiteSpacePosition = idx;
- whiteSpaceWidth = rWidth;
- }
- }
- if (rWidth > width)
- break;
- }
-
- if (rWidth > width && idx > fromPos) {
- idx--;
- rWidth = lastWidth;
- if (stopAtWordBreak && whiteSpaceSeen) {
- idx = whiteSpacePosition + 1;
- rWidth = whiteSpaceWidth;
- }
- }
-
- if (idx >= ctx->text.lastPos && c != XawLF)
- idx = ctx->text.lastPos + 1;
-
- *resPos = idx;
- *resWidth = rWidth;
- *resHeight = ascent + descent + 1;
-#else
- AsciiSinkObject sink = (AsciiSinkObject)w;
- TextWidget ctx = (TextWidget)XtParent(w);
- Widget source = ctx->text.source;
- XFontStruct *font = sink->ascii_sink.font;
- XawTextPosition idx, pos, whiteSpacePosition = 0;
- int i, lastWidth, whiteSpaceWidth, rWidth;
- Boolean whiteSpaceSeen;
- unsigned char c;
- XawTextBlock blk;
-
- pos = XawTextSourceRead(source, fromPos, &blk, BUFSIZ);
- rWidth = lastWidth = whiteSpaceWidth = 0;
- whiteSpaceSeen = False;
- c = 0;
-
- for (i = 0, idx = fromPos; rWidth <= width; i++, idx++) {
- if (i >= blk.length) {
- i = 0;
- pos = XawTextSourceRead(source, pos, &blk, BUFSIZ);
- if (blk.length == 0)
- break;
- }
- c = blk.ptr[i];
- lastWidth = rWidth;
- rWidth += CharWidth(sink, font, fromx + rWidth, c);
-
- if (c == XawLF) {
- idx++;
- break;
- }
- else if ((c == XawSP || c == XawTAB) && rWidth <= width) {
- whiteSpaceSeen = True;
- whiteSpacePosition = idx;
- whiteSpaceWidth = rWidth;
- }
- }
-
- if (rWidth > width && idx > fromPos) {
- idx--;
- rWidth = lastWidth;
- if (stopAtWordBreak && whiteSpaceSeen) {
- idx = whiteSpacePosition + 1;
- rWidth = whiteSpaceWidth;
- }
- }
-
- if (idx >= ctx->text.lastPos && c != XawLF)
- idx = ctx->text.lastPos + 1;
-
- *resPos = idx;
- *resWidth = rWidth;
- *resHeight = font->ascent + font->descent + 1;
-#endif
-}
-
-static void
-Resolve(Widget w, XawTextPosition pos, int fromx, int width,
- XawTextPosition *pos_return)
-{
- int resWidth, resHeight;
- Widget source = XawTextGetSource(XtParent(w));
-
- FindPosition(w, pos, fromx, width, False, pos_return, &resWidth, &resHeight);
- if (*pos_return > GETLASTPOS)
- *pos_return = GETLASTPOS;
-}
-
-static void
-GetGC(AsciiSinkObject sink)
-{
- XtGCMask valuemask = (GCFont | GCGraphicsExposures | GCClipXOrigin |
- GCForeground | GCBackground);
- XGCValues values;
-
- /* XXX We dont want do share a gc that will change the clip-mask */
- values.clip_x_origin = (long)sink;
- values.clip_mask = None;
- values.font = sink->ascii_sink.font->fid;
- values.graphics_exposures = False;
-
- values.foreground = sink->text_sink.foreground;
- values.background = sink->text_sink.background;
- sink->ascii_sink.normgc = XtAllocateGC((Widget)sink, 0, valuemask, &values,
- GCClipMask | GCFont | GCForeground |
- GCBackground, 0);
-
- values.foreground = sink->text_sink.background;
-#ifndef OLDXAW
- values.background = sink->text_sink.cursor_color;
-#else
- values.background = sink->text_sink.foreground;
-#endif
- sink->ascii_sink.invgc = XtAllocateGC((Widget)sink, 0, valuemask, &values,
- GCClipMask | GCFont, 0);
-
- valuemask |= GCFunction;
- values.function = GXxor;
-#ifndef OLDXAW
- values.foreground = sink->text_sink.background ^ sink->text_sink.cursor_color;
-#else
- values.foreground = sink->text_sink.background ^ sink->text_sink.foreground;
-#endif
- values.background = 0L;
- sink->ascii_sink.xorgc = XtAllocateGC((Widget)sink, 0, valuemask,
- &values, GCClipMask | GCFont, 0);
-
- XawAsciiSinkResize((Widget)sink);
-}
-
-/* Function:
- * XawAsciiSinkInitialize
- *
- * Parameters:
- * request - the requested and new values for the object instance
- * cnew - ""
- *
- * Description:
- * Initializes the TextSink Object.
- */
-/*ARGSUSED*/
-static void
-XawAsciiSinkInitialize(Widget request, Widget cnew,
- ArgList args, Cardinal *num_args)
-{
- AsciiSinkObject sink = (AsciiSinkObject)cnew;
-
- GetGC(sink);
-
- if (!sink->ascii_sink.font) XtError("Aborting: no font found\n");
-
- sink->ascii_sink.cursor_position = 0;
- sink->ascii_sink.laststate = XawisOff;
- sink->ascii_sink.cursor_x = sink->ascii_sink.cursor_y = 0;
-}
-
-/*
- * Function:
- * XawAsciiSinkDestroy
- *
- * Parameters:
- * w - AsciiSink Object
- *
- * Description:
- * This function cleans up when the object is destroyed.
- */
-static void
-XawAsciiSinkDestroy(Widget w)
-{
- AsciiSinkObject sink = (AsciiSinkObject)w;
-
- XtReleaseGC(w, sink->ascii_sink.normgc);
- XtReleaseGC(w, sink->ascii_sink.invgc);
- XtReleaseGC(w, sink->ascii_sink.xorgc);
-
- sink->ascii_sink.normgc =
- sink->ascii_sink.invgc =
- sink->ascii_sink.xorgc = NULL;
-}
-
-static void
-XawAsciiSinkResize(Widget w)
-{
- TextWidget ctx = (TextWidget)XtParent(w);
- AsciiSinkObject sink = (AsciiSinkObject)w;
- XRectangle rect;
- int width, height;
-
- if (w->core.widget_class != asciiSinkObjectClass)
- return;
-
- rect.x = ctx->text.r_margin.left;
- rect.y = ctx->text.r_margin.top;
- width = (int)XtWidth(ctx) - RHMargins(ctx);
- height = (int)XtHeight(ctx) - RVMargins(ctx);
- rect.width = width;
- rect.height = height;
-
- if (sink->ascii_sink.normgc) {
- if (width >= 0 && height >= 0)
- XSetClipRectangles(XtDisplay((Widget)ctx), sink->ascii_sink.normgc,
- 0, 0, &rect, 1, Unsorted);
- else
- XSetClipMask(XtDisplay((Widget)ctx), sink->ascii_sink.normgc, None);
- }
- if (sink->ascii_sink.invgc) {
- if (width >= 0 && height >= 0)
- XSetClipRectangles(XtDisplay((Widget)ctx), sink->ascii_sink.invgc,
- 0, 0, &rect, 1, Unsorted);
- else
- XSetClipMask(XtDisplay((Widget)ctx), sink->ascii_sink.invgc, None);
- }
- if (sink->ascii_sink.xorgc) {
- if (width >= 0 && height >= 0)
- XSetClipRectangles(XtDisplay((Widget)ctx), sink->ascii_sink.xorgc,
- 0, 0, &rect, 1, Unsorted);
- else
- XSetClipMask(XtDisplay((Widget)ctx), sink->ascii_sink.xorgc, None);
- }
-}
-
-/*
- * Function:
- * XawAsciiSinkSetValues
- *
- * Parameters:
- * current - current state of the object
- * request - what was requested
- * cnew - what the object will become
- *
- * Description:
- * Sets the values for the AsciiSink.
- *
- * Returns:
- * True if redisplay is needed
- */
-/*ARGSUSED*/
-static Boolean
-XawAsciiSinkSetValues(Widget current, Widget request, Widget cnew,
- ArgList args, Cardinal *num_args)
-{
- AsciiSinkObject w = (AsciiSinkObject)cnew;
- AsciiSinkObject old_w = (AsciiSinkObject)current;
-
- if (w->ascii_sink.font != old_w->ascii_sink.font
- || w->text_sink.background != old_w->text_sink.background
- || w->text_sink.foreground != old_w->text_sink.foreground
-#ifndef OLDXAW
- || w->text_sink.cursor_color != old_w->text_sink.cursor_color
- || w->text_sink.properties != old_w->text_sink.properties
-#endif
- ) {
-#ifdef OLDXAW
- XtReleaseGC(cnew, w->ascii_sink.normgc);
- XtReleaseGC(cnew, w->ascii_sink.invgc);
- XtReleaseGC(cnew, w->ascii_sink.xorgc);
- GetGC(w);
-#endif
- ((TextWidget)XtParent(cnew))->text.redisplay_needed = True;
- }
- else if (w->ascii_sink.echo != old_w->ascii_sink.echo
- || w->ascii_sink.display_nonprinting
- != old_w->ascii_sink.display_nonprinting)
- ((TextWidget)XtParent(cnew))->text.redisplay_needed = True;
-#ifndef OLDXAW
- if (w->text_sink.properties != old_w->text_sink.properties) {
- XawTextProperty *property =
- XawTextSinkGetProperty(cnew, XrmStringToQuark("default"));
-
- if (property) {
- if (property->mask & XAW_TPROP_FONT)
- w->ascii_sink.font = property->font;
- if (property->mask & XAW_TPROP_FOREGROUND)
- w->text_sink.foreground = property->foreground;
- if (property->mask & XAW_TPROP_BACKGROUND)
- w->text_sink.background = property->background;
- }
- }
-#endif
-
- return (False);
-}
-
-/*
- * Function:
- * MaxLines
- *
- * Parameters:
- * w - AsciiSink Object
- * height - height to fit lines into
- *
- * Description:
- * Finds the Maximum number of lines that will fit in a given height.
- *
- * Returns:
- * The number of lines that will fit
- */
-/*ARGSUSED*/
-static int
-MaxLines(Widget w, unsigned int height)
-{
- AsciiSinkObject sink = (AsciiSinkObject)w;
- int font_height;
-
- font_height = sink->ascii_sink.font->ascent + sink->ascii_sink.font->descent + 1;
-
- return ((int)height / font_height);
-}
-
-/*
- * Function:
- * MaxHeight
- *
- * Parameters:
- * w - AsciiSink Object
- * lines - number of lines
- *
- * Description:
- * Finds the Minium height that will contain a given number lines.
- *
- * Returns:
- * the height
- */
-static int
-MaxHeight(Widget w, int lines)
-{
- AsciiSinkObject sink = (AsciiSinkObject)w;
-
- return (lines * (sink->ascii_sink.font->ascent +
- sink->ascii_sink.font->descent + 1));
-}
-
-/*
- * Function:
- * SetTabs
- *
- * Parameters:
- * w - AsciiSink Object
- * tab_count - number of tabs in the list
- * tabs - text positions of the tabs
- *
- * Description:
- * Sets the Tab stops.
- */
-static void
-SetTabs(Widget w, int tab_count, short *tabs)
-{
- AsciiSinkObject sink = (AsciiSinkObject)w;
- int i;
- Atom XA_FIGURE_WIDTH;
- unsigned long figure_width = 0;
- XFontStruct *font = sink->ascii_sink.font;
-
- /*
- * Find the figure width of the current font
- */
- XA_FIGURE_WIDTH = XInternAtom(XtDisplayOfObject(w), "FIGURE_WIDTH", False);
- if (XA_FIGURE_WIDTH != None
- && (!XGetFontProperty(font, XA_FIGURE_WIDTH, &figure_width)
- || figure_width == 0)) {
- if (font->per_char && font->min_char_or_byte2 <= '$'
- && font->max_char_or_byte2 >= '$')
- figure_width = font->per_char['$' - font->min_char_or_byte2].width;
- else
- figure_width = font->max_bounds.width;
- }
-
- if (tab_count > sink->text_sink.tab_count) {
- sink->text_sink.tabs = (Position *)
- XtRealloc((char*)sink->text_sink.tabs, tab_count * sizeof(Position));
- sink->text_sink.char_tabs = (short *)
- XtRealloc((char*)sink->text_sink.char_tabs, tab_count * sizeof(short));
- }
-
- for (i = 0 ; i < tab_count ; i++) {
- sink->text_sink.tabs[i] = tabs[i] * figure_width;
- sink->text_sink.char_tabs[i] = tabs[i];
- }
-
- sink->text_sink.tab_count = tab_count;
-
-#ifndef NO_TAB_FIX
- {
- TextWidget ctx = (TextWidget)XtParent(w);
- ctx->text.redisplay_needed = True;
- _XawTextBuildLineTable(ctx, ctx->text.lt.top, True);
- }
-#endif
-}
+/***********************************************************
+
+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.
+
+******************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <X11/IntrinsicP.h>
+#include <X11/StringDefs.h>
+#include <X11/Xatom.h>
+#include <X11/Xaw/XawInit.h>
+#include <X11/Xaw/AsciiSinkP.h>
+#include <X11/Xaw/AsciiSrcP.h>
+#include <X11/Xaw/TextP.h>
+#include "Private.h"
+
+#ifdef GETLASTPOS
+#undef GETLASTPOS /* We will use our own GETLASTPOS */
+#endif
+
+#define GETLASTPOS \
+ XawTextSourceScan(source, 0, XawstAll, XawsdRight, 1, True)
+
+/*
+ * Class Methods
+ */
+static void XawAsciiSinkClassPartInitialize(WidgetClass);
+static void XawAsciiSinkInitialize(Widget, Widget, ArgList, Cardinal*);
+static void XawAsciiSinkDestroy(Widget);
+static void XawAsciiSinkResize(Widget);
+static Boolean XawAsciiSinkSetValues(Widget, Widget, Widget,
+ ArgList, Cardinal*);
+static int MaxLines(Widget, unsigned int);
+static int MaxHeight(Widget, int);
+static void SetTabs(Widget, int, short*);
+static void DisplayText(Widget, int, int,
+ XawTextPosition, XawTextPosition, Bool);
+static void InsertCursor(Widget, int, int, XawTextInsertState);
+static void FindPosition(Widget, XawTextPosition, int, int, Bool,
+ XawTextPosition*, int*, int*);
+static void FindDistance(Widget, XawTextPosition, int, XawTextPosition, int*,
+ XawTextPosition*, int*);
+static void Resolve(Widget, XawTextPosition, int, int, XawTextPosition*);
+static void GetCursorBounds(Widget, XRectangle*);
+#ifndef OLDXAW
+static void AsciiPreparePaint(Widget, int, int,
+ XawTextPosition, XawTextPosition, Bool);
+static void AsciiDoPaint(Widget);
+#endif
+
+/*
+ * Prototypes
+ */
+static void GetGC(AsciiSinkObject);
+static int CharWidth(AsciiSinkObject, XFontStruct*, int, unsigned int);
+static unsigned int PaintText(Widget w, GC gc, int x, int y,
+ char *buf, int len, Bool);
+
+/*
+ * Defined in TextSink.c
+ */
+void _XawTextSinkClearToBackground(Widget, int, int, unsigned, unsigned);
+
+/*
+ * Initialization
+ */
+#define offset(field) XtOffsetOf(AsciiSinkRec, ascii_sink.field)
+static XtResource resources[] = {
+ {
+ XtNfont,
+ XtCFont,
+ XtRFontStruct,
+ sizeof(XFontStruct*),
+ offset(font),
+ XtRString,
+ XtDefaultFont
+ },
+ {
+ XtNecho,
+ XtCOutput,
+ XtRBoolean,
+ sizeof(Boolean),
+ offset(echo),
+ XtRImmediate,
+ (XtPointer)True
+ },
+ {
+ XtNdisplayNonprinting,
+ XtCOutput,
+ XtRBoolean,
+ sizeof(Boolean),
+ offset(display_nonprinting),
+ XtRImmediate,
+ (XtPointer)
+ True
+ },
+};
+#undef offset
+
+#define Superclass (&textSinkClassRec)
+AsciiSinkClassRec asciiSinkClassRec = {
+ /* object */
+ {
+ (WidgetClass)Superclass, /* superclass */
+ "AsciiSink", /* class_name */
+ sizeof(AsciiSinkRec), /* widget_size */
+ XawInitializeWidgetSet, /* class_initialize */
+ XawAsciiSinkClassPartInitialize, /* class_part_initialize */
+ False, /* class_inited */
+ XawAsciiSinkInitialize, /* initialize */
+ NULL, /* initialize_hook */
+ NULL, /* obj1 */
+ NULL, /* obj2 */
+ 0, /* obj3 */
+ resources, /* resources */
+ XtNumber(resources), /* num_resources */
+ NULLQUARK, /* xrm_class */
+ False, /* obj4 */
+ False, /* obj5 */
+ False, /* obj6 */
+ False, /* obj7 */
+ XawAsciiSinkDestroy, /* destroy */
+ (XtProc)XawAsciiSinkResize, /* obj8 */
+ NULL, /* obj9 */
+ XawAsciiSinkSetValues, /* set_values */
+ NULL, /* set_values_hook */
+ NULL, /* obj10 */
+ NULL, /* get_values_hook */
+ NULL, /* obj11 */
+ XtVersion, /* version */
+ NULL, /* callback_private */
+ NULL, /* obj12 */
+ NULL, /* obj13 */
+ NULL, /* obj14 */
+ NULL, /* extension */
+ },
+ /* text_sink */
+ {
+ DisplayText, /* DisplayText */
+ InsertCursor, /* InsertCursor */
+ XtInheritClearToBackground, /* ClearToBackground */
+ FindPosition, /* FindPosition */
+ FindDistance, /* FindDistance */
+ Resolve, /* Resolve */
+ MaxLines, /* MaxLines */
+ MaxHeight, /* MaxHeight */
+ SetTabs, /* SetTabs */
+ GetCursorBounds, /* GetCursorBounds */
+#ifndef OLDXAW
+ NULL /* extension */
+#endif
+ },
+ /* ascii_sink */
+ {
+ NULL, /* extension */
+ }
+};
+
+WidgetClass asciiSinkObjectClass = (WidgetClass)&asciiSinkClassRec;
+
+/*
+ * Implementation
+ */
+static void
+XawAsciiSinkClassPartInitialize(WidgetClass wc)
+{
+#ifndef OLDXAW
+ AsciiSinkObjectClass cclass = (AsciiSinkObjectClass)wc;
+ XrmQuark record_type = XrmPermStringToQuark("TextSink");
+ TextSinkExt ext = cclass->text_sink_class.extension;
+
+ while (ext) {
+ if (ext->record_type == record_type &&
+ ext->version == 1) {
+ ext->PreparePaint = AsciiPreparePaint;
+ ext->DoPaint = AsciiDoPaint;
+ break;
+ }
+ ext = (TextSinkExt)ext->next_extension;
+ }
+ if (ext == NULL)
+ XtError("TextSinkClass: cannot resolve extension.\n");
+#endif
+}
+
+static int
+CharWidth(AsciiSinkObject sink, XFontStruct *font, int x, unsigned int c)
+{
+ int width = 0;
+
+ if (c == XawLF)
+ return (0);
+
+ if (c == XawTAB) {
+ int i;
+ Position *tab;
+
+ width = x;
+ /* Adjust for Left Margin */
+ x -= ((TextWidget)XtParent((Widget)sink))->text.left_margin;
+
+ i = 0;
+ tab = sink->text_sink.tabs;
+ /*CONSTCOND*/
+ while (1) {
+ if (x >= 0 && x < *tab)
+ return (*tab - x);
+ /* Start again */
+ if (++i >= sink->text_sink.tab_count) {
+ x -= *tab;
+ i = 0;
+ tab = sink->text_sink.tabs;
+ if (width == x)
+ return (0);
+ }
+ else
+ ++tab;
+ }
+ /*NOTREACHED*/
+ }
+
+ if ((c & 0177) < XawSP || c == 0177) {
+ if (sink->ascii_sink.display_nonprinting) {
+ if (c > 0177) {
+ width = CharWidth(sink, font, x, '\\');
+ width += CharWidth(sink, font, x, ((c >> 6) & 7) + '0');
+ width += CharWidth(sink, font, x, ((c >> 3) & 7) + '0');
+ c = (c & 7) + '0';
+ }
+ else {
+ width = CharWidth(sink, font, x, '^');
+ if ((c |= 0100) == 0177)
+ c = '?';
+ }
+ }
+ else
+ c = XawSP;
+ }
+
+ if (font->per_char
+ && (c >= font->min_char_or_byte2 && c <= font->max_char_or_byte2))
+ width += font->per_char[c - font->min_char_or_byte2].width;
+ else
+ width += font->min_bounds.width;
+
+ return (width);
+}
+
+#ifndef OLDXAW
+static int
+GetTextWidth(TextWidget ctx, int current_width, XFontStruct *font,
+ XawTextPosition from, int length)
+{
+ int i, width = 0;
+ XawTextBlock block;
+ XawTextPosition pos = from;
+
+ while (length > 0) {
+ pos = XawTextSourceRead(ctx->text.source, from, &block, length);
+ length -= pos - from;
+ from = pos;
+ for (i = 0; i < block.length; i++)
+ width += CharWidth((AsciiSinkObject)ctx->text.sink, font,
+ current_width + width,
+ (unsigned char)block.ptr[i]);
+ }
+
+ return (width);
+}
+
+static
+void CalculateBearing(TextWidget ctx, XawTextPosition position, int x, int y,
+ int ascent, int descent, Bool highlight, Bool right)
+{
+/*
+ * Sample case:
+ *
+ * lbearing| width |rbearing
+ * | |
+ * | ####
+ * | ### |
+ * | #### |
+ * | #### |
+ * | ########## |
+ * | #### |
+ * | #### |
+ * | #### |
+ * | #### |
+ * |### |
+ * #### |
+ * | |
+ *
+ */
+ AsciiSinkObject sink = (AsciiSinkObject)ctx->text.sink;
+ XawTextAnchor *anchor;
+ XawTextEntity *entity;
+ XawTextProperty *property;
+ XawTextPaintStruct *paint;
+ XawTextBlock block;
+ XFontStruct *font;
+
+ property = NULL;
+ if (XawTextSourceAnchorAndEntity(ctx->text.source, position,
+ &anchor, &entity) &&
+ (property = XawTextSinkGetProperty((Widget)sink,
+ entity->property)) != NULL &&
+ (property->mask & XAW_TPROP_FONT))
+ font = property->font;
+ else
+ font = sink->ascii_sink.font;
+ if (right) {
+ if (font->max_bounds.rbearing > 0) {
+ int rbearing = font->max_bounds.rbearing - font->max_bounds.width;
+ unsigned char c;
+
+ (void)XawTextSourceRead(ctx->text.source, position, &block, 1);
+ c = *(unsigned char*)block.ptr;
+ if (c == '\t' || c == '\n')
+ c = ' ';
+ else if ((c & 0177) < XawSP || c == 0177) {
+ if (sink->ascii_sink.display_nonprinting)
+ c = c > 0177 ? (c & 7) + '0' : c + '@';
+ else
+ c = ' ';
+ }
+ if (font->per_char &&
+ (c >= font->min_char_or_byte2 && c <= font->max_char_or_byte2))
+ rbearing = font->per_char[c - font->min_char_or_byte2].rbearing -
+ font->per_char[c - font->min_char_or_byte2].width;
+ if (rbearing > 0) {
+ paint = XtNew(XawTextPaintStruct);
+ paint->next = sink->text_sink.paint->bearings;
+ sink->text_sink.paint->bearings = paint;
+ paint->x = x - (paint->width = CharWidth(sink, font, 0, c));
+ paint->y = y + ascent;
+ paint->property = property;
+ paint->max_ascent = ascent;
+ paint->max_descent = descent;
+ paint->backtabs = NULL;
+ paint->highlight = highlight;
+ paint->length = 1;
+ paint->text = XtMalloc(1);
+ paint->text[0] = c;
+ }
+ }
+ }
+ else {
+ if (font->min_bounds.lbearing < 0) {
+ int lbearing = font->min_bounds.lbearing;
+ unsigned char c;
+
+ (void)XawTextSourceRead(ctx->text.source, position, &block, 1);
+ c = *(unsigned char*)block.ptr;
+ if (c == '\t' || c == '\n')
+ c = ' ';
+ else if ((c & 0177) < XawSP || c == 0177) {
+ if (sink->ascii_sink.display_nonprinting)
+ c = c > 0177 ? '\\' : c + '^';
+ else
+ c = ' ';
+ }
+ if (font->per_char &&
+ (c >= font->min_char_or_byte2 && c <= font->max_char_or_byte2))
+ lbearing = font->per_char[c - font->min_char_or_byte2].lbearing;
+ if (lbearing < 0) {
+ paint = XtNew(XawTextPaintStruct);
+ paint->next = sink->text_sink.paint->bearings;
+ sink->text_sink.paint->bearings = paint;
+ paint->x = x;
+ paint->width = -CharWidth(sink, font, 0, c);
+ paint->y = y + ascent;
+ paint->property = property;
+ paint->max_ascent = ascent;
+ paint->max_descent = descent;
+ paint->backtabs = NULL;
+ paint->highlight = highlight;
+ paint->length = 1;
+ paint->text = XtMalloc(1);
+ paint->text[0] = c;
+ }
+ }
+ }
+}
+
+static void
+AsciiPreparePaint(Widget w, int y, int line,
+ XawTextPosition from, XawTextPosition to, Bool highlight)
+{
+ static XmuSegment segment;
+ static XmuScanline next;
+ static XmuScanline scanline = {0, &segment, &next};
+ static XmuArea area = {&scanline};
+
+ TextWidget ctx = (TextWidget)XtParent(w);
+ AsciiSinkObject sink = (AsciiSinkObject)ctx->text.sink;
+ XawTextPosition left, right, pos, pos2, tmp, length;
+ XawTextAnchor *anchor;
+ XawTextEntity *entity;
+ XawTextProperty *property;
+ int i, ascent = 0, descent = 0, xl, xr, x = ctx->text.left_margin, bufsiz;
+ XawTextBlock block;
+ XFontStruct *font;
+ XawTextPaintStruct *paint;
+
+ if (!sink->ascii_sink.echo)
+ return;
+
+ /* pass 1: calculate ascent/descent values and x coordinate */
+ /* XXX the MAX ascent/descent value should be in the line table XXX */
+ /* XXX the x coordinate can be a parameter, but since it is required
+ to calculate the ascent/descent, do it here to avoid an extra
+ search in the entities */
+ pos = tmp = left = ctx->text.lt.info[line].position;
+ right = ctx->text.lt.info[line + 1].position;
+ right = XawMin(right, ctx->text.lastPos + 1);
+ while (pos < right) {
+ if (XawTextSourceAnchorAndEntity(ctx->text.source, pos,
+ &anchor, &entity)) {
+ if ((property = XawTextSinkGetProperty((Widget)sink,
+ entity->property)) != NULL &&
+ (property->mask & XAW_TPROP_FONT))
+ font = property->font;
+ else
+ font = sink->ascii_sink.font;
+ tmp = pos;
+ pos = anchor->position + entity->offset + entity->length;
+ if ((length = XawMin(from, pos) - tmp) > 0)
+ x += GetTextWidth(ctx, x, font, tmp, length);
+ ascent = XawMax(font->ascent, ascent);
+ descent = XawMax(font->descent, descent);
+ }
+ else if (anchor) {
+ ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
+ descent = XawMax(sink->ascii_sink.font->descent, descent);
+ while (entity && pos < right) {
+ tmp = pos;
+ if ((pos = anchor->position + entity->offset) < tmp)
+ pos = tmp;
+ else {
+ if ((length = XawMin(from, pos) - tmp) > 0) {
+ x += GetTextWidth(ctx, x, sink->ascii_sink.font, tmp,
+ length);
+ tmp += length;
+ }
+ if (pos < right) {
+ pos += entity->length;
+ if ((property = XawTextSinkGetProperty((Widget)sink,
+ entity->property)) != NULL &&
+ (property->mask & XAW_TPROP_FONT))
+ font = property->font;
+ else
+ font = sink->ascii_sink.font;
+ if ((length = XawMin(from, pos) - tmp) > 0)
+ x += GetTextWidth(ctx, x, font, tmp, length);
+ ascent = XawMax(font->ascent, ascent);
+ descent = XawMax(font->descent, descent);
+ }
+ }
+ entity = entity->next;
+ }
+
+ if (anchor->entities == NULL) {
+ tmp = XawMin(pos, from);
+ if ((length = from - tmp) > 0)
+ x += GetTextWidth(ctx, x, sink->ascii_sink.font, tmp, length);
+ break;
+ }
+ }
+ else {
+ tmp = XawMin(pos, from);
+ if ((length = from - tmp) > 0)
+ x += GetTextWidth(ctx, x, sink->ascii_sink.font, tmp, length);
+ ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
+ descent = XawMax(sink->ascii_sink.font->descent, descent);
+ break;
+ }
+ }
+ if (!ascent)
+ ascent = sink->ascii_sink.font->ascent;
+ if (!descent)
+ descent = sink->ascii_sink.font->descent;
+
+ xl = x;
+
+ /* pass 2: feed the XawTextPaintStruct lists */
+ pos = from;
+ while (pos < to) {
+ paint = XtNew(XawTextPaintStruct);
+ paint->next = sink->text_sink.paint->paint;
+ sink->text_sink.paint->paint = paint;
+ paint->x = x;
+ paint->y = y + ascent;
+ paint->property = NULL;
+ paint->max_ascent = ascent;
+ paint->max_descent = descent;
+ paint->backtabs = NULL;
+ paint->highlight = highlight;
+
+ tmp = pos;
+ if (XawTextSourceAnchorAndEntity(ctx->text.source, pos,
+ &anchor, &entity)) {
+ pos = anchor->position + entity->offset + entity->length;
+ if ((paint->property = XawTextSinkGetProperty((Widget)sink,
+ entity->property)) != NULL &&
+ (paint->property->mask & XAW_TPROP_FONT))
+ font = paint->property->font;
+ else
+ font = sink->ascii_sink.font;
+ }
+ else {
+ if (anchor) {
+ while (entity && anchor->position + entity->offset < pos)
+ entity = entity->next;
+ if (entity)
+ pos = anchor->position + entity->offset;
+ else
+ pos = to;
+ }
+ else
+ pos = to;
+ font = sink->ascii_sink.font;
+ }
+ pos = XawMin(pos, to);
+ length = pos - tmp;
+
+ paint->text = XtMalloc(bufsiz = pos - tmp + 4);
+ paint->length = 0;
+ segment.x1 = x;
+
+ pos2 = tmp;
+ while (length > 0) {
+ pos2 = XawTextSourceRead(ctx->text.source, tmp, &block, length);
+ length = pos - pos2;
+ tmp = pos2;
+ for (i = 0; i < block.length; i++) {
+ unsigned char c = (unsigned char)block.ptr[i];
+
+ if (paint->length + 4 > bufsiz)
+ paint->text = XtRealloc(paint->text, bufsiz += 32);
+ paint->text[paint->length] = c;
+ if (c == '\n') {
+ x += CharWidth(sink, font, 0, ' ');
+ continue;
+ }
+ if (c == '\t') {
+ x += XTextWidth(font, paint->text, paint->length);
+ segment.x2 = x + CharWidth(sink, font, x, '\t');
+
+ if (XmuValidSegment(&segment)) {
+ if (!highlight && (paint->property &&
+ (paint->property->mask & XAW_TPROP_BACKGROUND))) {
+ if (ascent > font->ascent) {
+ scanline.y = y;
+ next.y = y + ascent - font->ascent;
+ XmuAreaOr(sink->text_sink.paint->clip, &area);
+ }
+ if (descent >= font->descent) {
+ scanline.y = y + ascent + font->descent;
+ next.y = scanline.y + descent - font->descent + 1;
+ XmuAreaOr(sink->text_sink.paint->clip, &area);
+ }
+ if (paint->backtabs == NULL)
+ paint->backtabs = XmuCreateArea();
+ scanline.y = y + ascent - font->ascent;
+ next.y = y + ascent + font->descent;
+ XmuAreaOr(paint->backtabs, &area);
+ }
+ else {
+ scanline.y = y;
+ next.y = ctx->text.lt.info[line + 1].y;
+ if (highlight) {
+ if (!sink->text_sink.paint->hightabs)
+ sink->text_sink.paint->hightabs =
+ XmuCreateArea();
+ XmuAreaOr(sink->text_sink.paint->hightabs, &area);
+ }
+ else
+ XmuAreaOr(sink->text_sink.paint->clip, &area);
+ }
+ }
+
+ paint->width = segment.x2 - segment.x1;
+ x = segment.x1 = segment.x2;
+
+ if (paint->length == 0) {
+ paint->x = x;
+ continue;
+ }
+ paint->text = XtRealloc(paint->text, paint->length);
+ property = paint->property;
+ paint = XtNew(XawTextPaintStruct);
+ paint->next = sink->text_sink.paint->paint;
+ sink->text_sink.paint->paint = paint;
+ paint->x = x;
+ paint->y = y + ascent;
+ paint->property = property;
+ paint->max_ascent = ascent;
+ paint->max_descent = descent;
+ paint->backtabs = NULL;
+ paint->highlight = highlight;
+ paint->text = XtMalloc(bufsiz = pos - tmp - length +
+ block.length - i + 4);
+ paint->length = 0;
+ continue;
+ }
+ if ((c & 0177) < XawSP || c == 0177) {
+ if (sink->ascii_sink.display_nonprinting) {
+ if (c > 0177) {
+ paint->text[paint->length++] = '\\';
+ paint->text[paint->length++] = ((c >> 6) & 7) + '0';
+ paint->text[paint->length++] = ((c >> 3) & 7) + '0';
+ paint->text[paint->length] = (c & 7) + '0';
+ }
+ else {
+ c |= 0100;
+ paint->text[paint->length++] = '^';
+ paint->text[paint->length] = c == 0177 ? '?' : c;
+ }
+ }
+ else
+ paint->text[paint->length] = ' ';
+ }
+ paint->length++;
+ }
+ }
+
+ x += XTextWidth(font, paint->text, paint->length);
+ segment.x2 = x;
+ if (XmuValidSegment(&segment)) {
+ /* erase only what really is needed */
+ /*if (!highlight || (paint->property &&
+ (paint->property->mask & XAW_TPROP_BACKGROUND))) {
+ if (ascent > font->ascent) {
+ scanline.y = y;
+ next.y = y + ascent - font->ascent;
+ XmuAreaOr(sink->text_sink.paint->clip, &area);
+ }
+ if (descent > font->descent) {
+ scanline.y = y + ascent + font->descent;
+ next.y = scanline.y + descent - font->descent;
+ XmuAreaOr(sink->text_sink.paint->clip, &area);
+ }
+ }
+ else*/ {
+ scanline.y = y;
+ next.y = ctx->text.lt.info[line + 1].y;
+ XmuAreaOr(sink->text_sink.paint->clip, &area);
+ }
+ }
+
+ paint->width = x - segment.x1;
+ }
+
+ xr = x;
+
+ /* pass 3: bearing clipping */
+ if (left < from) {
+ CalculateBearing(ctx, from - 1, xl, y, ascent, descent, highlight, True);
+ if (ctx->text.s.left < ctx->text.s.right) {
+ if (ctx->text.s.right == from)
+ CalculateBearing(ctx, from, xl, y, ascent, descent, True, False);
+ else if (ctx->text.s.left == from)
+ CalculateBearing(ctx, from, xl, y, ascent, descent, False, False);
+ }
+ }
+ right = XawMin(right, ctx->text.lastPos);
+ if (right >= to && to > from) {
+ if (to < right)
+ CalculateBearing(ctx, to, xr, y, ascent, descent, highlight, False);
+ if (ctx->text.s.left < ctx->text.s.right) {
+ if (ctx->text.s.right == to)
+ CalculateBearing(ctx, to - 1, xr, y, ascent, descent, False, True);
+ else if (ctx->text.s.left == to)
+ CalculateBearing(ctx, to - 1, xr, y, ascent, descent, True, True);
+ }
+ }
+}
+
+static int
+qcmp_paint_struct(_Xconst void *left, _Xconst void *right)
+{
+ return ((*(XawTextPaintStruct**)left)->property -
+ (*(XawTextPaintStruct**)right)->property);
+}
+
+static void
+AsciiDoPaint(Widget w)
+{
+ TextWidget ctx = (TextWidget)XtParent(w);
+ AsciiSinkObject sink = (AsciiSinkObject)ctx->text.sink;
+ XmuScanline *scan;
+ XmuSegment *seg;
+ XawTextPaintList *list = sink->text_sink.paint;
+#if 0
+ XawTextPaintStruct *base, *head;
+#endif
+ XawTextPaintStruct *paint = list->paint;
+ XawTextProperty *property;
+ XFontStruct *font = NULL;
+ XRectangle *rects;
+ int n_rects, i_rects;
+ GC gc;
+ Bool highlight;
+ XRectangle rect;
+ int width, height, line_width = -1;
+ XGCValues values;
+
+ /* pass 1: clear clipping areas */
+ /* XXX Don't use XDrawImageString because the font may be italic, and
+ will get incorrectly drawn. Probably, it could be a good idea to
+ check if this is the case, and do special processing. But this
+ will need to be checked if required. */
+ for (scan = list->clip->scanline; scan && scan->next; scan = scan->next)
+ for (seg = scan->segment; seg; seg = seg->next)
+ _XawTextSinkClearToBackground(ctx->text.sink,
+ seg->x1, scan->y,
+ seg->x2 - seg->x1,
+ scan->next->y - scan->y);
+
+ /* pass 2: optimize drawing list to avoid too much GC change requests */
+ /* XXX this assumes there will not exist entities drawn over other
+ entities. */
+#if 0
+ while (paint) {
+ base = paint;
+ head = paint->next;
+ while (head) {
+ if (head->property == paint->property) {
+ base->next = head->next;
+ head->next = paint->next;
+ paint->next = head;
+ paint = head;
+ }
+ base = head;
+ head = head->next;
+ }
+ paint = paint->next;
+ }
+#endif
+ if (paint && paint->next) {
+ XawTextPaintStruct **paints;
+ int i = 0, n_paints = 0;
+
+ while (paint) {
+ paint = paint->next;
+ ++n_paints;
+ }
+ paints = (XawTextPaintStruct**)
+ XtMalloc(n_paints * sizeof(XawTextPaintStruct));
+ paint = list->paint;
+ while (paint) {
+ paints[i++] = paint;
+ paint = paint->next;
+ }
+ qsort((void*)paints, n_paints, sizeof(XawTextPaintStruct*),
+ qcmp_paint_struct);
+ list->paint = paints[0];
+ for (i = 0; i < n_paints - 1; i++)
+ paints[i]->next = paints[i + 1];
+ paints[i]->next = NULL;
+ XtFree((XtPointer)paints);
+ }
+
+ /* pass 3: clip gc */
+ gc = sink->ascii_sink.normgc;
+
+ rect.x = ctx->text.r_margin.left;
+ rect.y = ctx->text.r_margin.top;
+ width = (int)XtWidth(ctx) - RHMargins(ctx);
+ height = (int)XtHeight(ctx) - RVMargins(ctx);
+ rect.width = width;
+ rect.height = height;
+ if (width >= 0 && height >= 0)
+ XSetClipRectangles(XtDisplay((Widget)ctx), gc,
+ 0, 0, &rect, 1, Unsorted);
+ else
+ XSetClipMask(XtDisplay((Widget)ctx), gc, None);
+
+ /* pass 4: draw backgrounds */
+ paint = list->paint;
+ property = NULL;
+ rects = NULL;
+ i_rects = n_rects = 0;
+ while (paint) {
+ if (paint->property && (paint->property->mask & XAW_TPROP_BACKGROUND)) {
+ if (property != paint->property) {
+ if (i_rects)
+ XFillRectangles(XtDisplay(ctx), XtWindow(ctx), gc,
+ rects, i_rects);
+ i_rects = 0;
+ property = paint->property;
+ if (property->mask & XAW_TPROP_FONT)
+ font = property->font;
+ else
+ font = sink->ascii_sink.font;
+ XSetForeground(XtDisplay(ctx), gc, property->background);
+ }
+ if (i_rects <= n_rects)
+ rects = (XRectangle*)
+ XtRealloc((XtPointer)rects, sizeof(XRectangle) *
+ ++n_rects);
+ rects[i_rects].x = paint->x;
+ rects[i_rects].y = paint->y - font->ascent;
+ rects[i_rects].width = paint->width;
+ rects[i_rects++].height = font->ascent + font->descent;
+
+ if (paint->backtabs) {
+ for (scan = paint->backtabs->scanline; scan && scan->next;
+ scan = scan->next)
+ for (seg = scan->segment; seg; seg = seg->next) {
+ if (i_rects <= n_rects)
+ rects = (XRectangle*)
+ XtRealloc((XtPointer)rects, sizeof(XRectangle) *
+ ++n_rects);
+ rects[i_rects].x = seg->x1;
+ rects[i_rects].y = scan->y;
+ rects[i_rects].width = seg->x2 - seg->x1;
+ rects[i_rects++].height = scan->next->y - scan->y;
+ }
+ }
+
+
+ }
+ paint = paint->next;
+ }
+ if (i_rects)
+ XFillRectangles(XtDisplay(ctx), XtWindow(ctx), gc, rects, i_rects);
+
+ paint = list->paint;
+ i_rects = 0;
+ while (paint) {
+ if (paint->highlight) {
+ if (i_rects == 0)
+ XSetForeground(XtDisplay(ctx), gc, sink->text_sink.cursor_color);
+ if (i_rects <= n_rects)
+ rects = (XRectangle*)
+ XtRealloc((XtPointer)rects, sizeof(XRectangle) *
+ ++n_rects);
+ rects[i_rects].x = paint->x;
+ rects[i_rects].y = paint->y - paint->max_ascent;
+ rects[i_rects].width = paint->width;
+ rects[i_rects++].height = paint->max_ascent + paint->max_descent + 1;
+ }
+ paint = paint->next;
+ }
+ if (list->hightabs) {
+ for (scan = list->hightabs->scanline; scan && scan->next;
+ scan = scan->next)
+ for (seg = scan->segment; seg; seg = seg->next) {
+ if (i_rects == 0)
+ XSetForeground(XtDisplay(ctx), gc,
+ sink->text_sink.cursor_color);
+ if (i_rects <= n_rects)
+ rects = (XRectangle*)
+ XtRealloc((XtPointer)rects, sizeof(XRectangle) *
+ ++n_rects);
+ rects[i_rects].x = seg->x1;
+ rects[i_rects].y = scan->y;
+ rects[i_rects].width = seg->x2 - seg->x1;
+ rects[i_rects++].height = scan->next->y - scan->y;
+ }
+ }
+
+ if (i_rects)
+ XFillRectangles(XtDisplay(ctx), XtWindow(ctx), gc, rects, i_rects);
+ if (rects)
+ XtFree((XtPointer)rects);
+
+ /* pass 5: draw text! */
+ paint = list->paint;
+ if (paint && (property = paint->property) == NULL) {
+ font = sink->ascii_sink.font;
+ XSetFont(XtDisplay(ctx), gc, font->fid);
+ if (!paint->highlight)
+ XSetForeground(XtDisplay(ctx), gc, sink->text_sink.foreground);
+ }
+ else
+ property = NULL;
+ highlight = False;
+ while (paint) {
+ if (!highlight && paint->highlight)
+ XSetForeground(XtDisplay(ctx), gc, sink->text_sink.background);
+ if (highlight || paint->highlight || paint->property != property) {
+ if (!paint->property || !(paint->property->mask & XAW_TPROP_FONT))
+ font = sink->ascii_sink.font;
+ else
+ font = paint->property->font;
+ XSetFont(XtDisplay(ctx), gc, font->fid);
+ if (!paint->highlight) {
+ if (!paint->property ||
+ !(paint->property->mask & XAW_TPROP_FOREGROUND))
+ XSetForeground(XtDisplay(ctx), gc,
+ sink->text_sink.foreground);
+ else
+ XSetForeground(XtDisplay(ctx), gc,
+ paint->property->foreground);
+ }
+ highlight = paint->highlight;
+ property = paint->property;
+ }
+
+ if (paint->x < XtWidth(ctx) && paint->x + paint->width > 0) {
+ XDrawString(XtDisplay(ctx), XtWindow(ctx), gc, paint->x, paint->y,
+ paint->text, paint->length);
+ if (property) {
+ if (property->mask & XAW_TPROP_UNDERLINE) {
+ if (line_width != property->underline_thickness) {
+ values.line_width = line_width =
+ property->underline_thickness;
+ XChangeGC(XtDisplay(ctx), gc, GCLineWidth, &values);
+ }
+
+ XDrawLine(XtDisplay(ctx), XtWindow(ctx), gc, paint->x,
+ paint->y + property->underline_position,
+ paint->x + paint->width,
+ paint->y + property->underline_position);
+ }
+ if (property->mask & XAW_TPROP_OVERSTRIKE) {
+ if (line_width != property->underline_thickness) {
+ values.line_width = line_width =
+ property->underline_thickness;
+ XChangeGC(XtDisplay(ctx), gc, GCLineWidth, &values);
+ }
+
+ XDrawLine(XtDisplay(ctx), XtWindow(ctx), gc, paint->x,
+ paint->y - (font->ascent>>1) + (font->descent>>1),
+ paint->x + paint->width,
+ paint->y - (font->ascent>>1) + (font->descent>>1));
+ }
+ }
+ }
+
+ paint = paint->next;
+ }
+
+ /* pass 6: bearing clipping */
+ /* dont care on order of drawing or caching of state (by now) */
+ paint = list->bearings;
+ while (paint) {
+ XRectangle rect;
+
+ if (paint->highlight)
+ XSetForeground(XtDisplay(ctx), gc, sink->text_sink.background);
+ if (!paint->property || !(paint->property->mask & XAW_TPROP_FONT))
+ font = sink->ascii_sink.font;
+ else
+ font = paint->property->font;
+ XSetFont(XtDisplay(ctx), gc, font->fid);
+ if (!paint->highlight) {
+ if (!paint->property ||
+ !(paint->property->mask & XAW_TPROP_FOREGROUND))
+ XSetForeground(XtDisplay(ctx), gc, sink->text_sink.foreground);
+ else
+ XSetForeground(XtDisplay(ctx), gc, paint->property->foreground);
+ }
+ if (paint->x < XtWidth(ctx) && paint->x + paint->width > 0) {
+ rect.x = paint->x + paint->width;
+ rect.width = XawAbs(paint->width); /* more than enough */
+ rect.y = paint->y - font->ascent;
+ rect.height = rect.y + font->ascent + font->descent;
+ XSetClipRectangles(XtDisplay((Widget)ctx), gc,
+ 0, 0, &rect, 1, Unsorted);
+ XDrawString(XtDisplay(ctx), XtWindow(ctx), gc, paint->x, paint->y,
+ paint->text, paint->length);
+ }
+ paint = paint->next;
+ }
+}
+#endif
+
+/*
+ * Function:
+ * PaintText
+ *
+ * Parameters:
+ * w - text sink object
+ * gc - gc to paint text with
+ * x - location to paint the text
+ * y - ""
+ * buf - buffer and length of text to paint.
+ * len - ""
+ * clear_bg - clear background before drawing ?
+ *
+ * Description:
+ * Actually paints the text into the window.
+ *
+ * Returns:
+ * the width of the text painted
+ */
+static unsigned int
+PaintText(Widget w, GC gc, int x, int y, char *buf, int len, Bool clear_bg)
+{
+ AsciiSinkObject sink = (AsciiSinkObject)w;
+ TextWidget ctx = (TextWidget)XtParent(w);
+ int width = XTextWidth(sink->ascii_sink.font, buf, len);
+
+ if ((x > XtWidth(ctx)) || width <= -x) /* Don't draw if we can't see it */
+ return (width);
+
+ if (clear_bg) {
+ _XawTextSinkClearToBackground(w, x, y - sink->ascii_sink.font->ascent,
+ width, sink->ascii_sink.font->ascent
+ + sink->ascii_sink.font->descent);
+ XDrawString(XtDisplay(ctx), XtWindow(ctx), gc, x, y, buf, len);
+ }
+ else
+ XDrawImageString(XtDisplay(ctx), XtWindow(ctx), gc, x, y, buf, len);
+
+ return (width);
+}
+
+static void
+DisplayText(Widget w, int x, int y,
+ XawTextPosition pos1, XawTextPosition pos2, Bool highlight)
+{
+ TextWidget ctx = (TextWidget)XtParent(w);
+ AsciiSinkObject sink = (AsciiSinkObject)w;
+ XFontStruct *font = sink->ascii_sink.font;
+ Widget source = XawTextGetSource(XtParent(w));
+ unsigned char buf[260];
+ int j, k;
+ XawTextBlock blk;
+ GC gc, invgc, tabgc;
+ int max_x;
+ Bool clear_bg;
+
+ if (!sink->ascii_sink.echo || !ctx->text.lt.lines)
+ return;
+
+ max_x = (int)XtWidth(ctx) - ctx->text.r_margin.right;
+ clear_bg = !highlight && ctx->core.background_pixmap != XtUnspecifiedPixmap;
+
+ gc = highlight ? sink->ascii_sink.invgc : sink->ascii_sink.normgc;
+ invgc = highlight ? sink->ascii_sink.normgc : sink->ascii_sink.invgc;
+
+ if (highlight && sink->ascii_sink.xorgc)
+ tabgc = sink->ascii_sink.xorgc;
+ else
+ tabgc = invgc;
+
+ y += sink->ascii_sink.font->ascent;
+ for (j = 0; pos1 < pos2;) {
+ pos1 = XawTextSourceRead(source, pos1, &blk, pos2 - pos1);
+ for (k = 0; k < blk.length; k++) {
+ if (j >= sizeof(buf) - 4) { /* buffer full, dump the text */
+ if ((x += PaintText(w, gc, x, y, (char*)buf, j, clear_bg))
+ >= max_x)
+ return;
+ j = 0;
+ }
+ buf[j] = blk.ptr[k];
+ if (buf[j] == XawLF) /* line feeds ('\n') are not printed */
+ continue;
+
+ else if (buf[j] == '\t') {
+ int width;
+
+ if (j != 0
+ && (x += PaintText(w, gc, x, y, (char*)buf, j, clear_bg))
+ >= max_x)
+ return;
+
+ if ((width = CharWidth(sink, font, x, '\t')) > -x) {
+ if (clear_bg)
+ _XawTextSinkClearToBackground(w, x, y-font->ascent, width,
+ font->ascent+font->descent);
+ else
+ XFillRectangle(XtDisplayOfObject(w), XtWindowOfObject(w),
+ tabgc, x, y - font->ascent, width,
+ font->ascent + font->descent);
+ }
+
+ if ((x += width) >= max_x)
+ return;
+
+ j = -1;
+ }
+ else if ((buf[j] & 0177) < XawSP || buf[j] == 0177) {
+ if (sink->ascii_sink.display_nonprinting) {
+ unsigned char c = buf[j];
+
+ if (c > 0177) {
+ buf[j++] = '\\';
+ buf[j++] = ((c >> 6) & 7) + '0';
+ buf[j++] = ((c >> 3) & 7) + '0';
+ buf[j] = (c & 7) + '0';
+ }
+ else {
+ c |= 0100;
+ buf[j++] = '^';
+ buf[j] = c == 0177 ? '?' : c;
+ }
+ }
+ else
+ buf[j] = ' ';
+ }
+ j++;
+ }
+ }
+
+ if (j > 0)
+ (void)PaintText(w, gc, x, y, (char*)buf, j, clear_bg);
+}
+
+/*
+ * Function:
+ * GetCursorBounds
+ *
+ * Parameters:
+ * w - text sink object
+ * rect - X rectangle to return the cursor bounds
+ *
+ * Description:
+ * Returns the size and location of the cursor.
+ */
+static void
+GetCursorBounds(Widget w, XRectangle *rect)
+{
+ AsciiSinkObject sink = (AsciiSinkObject)w;
+ XFontStruct *font = sink->ascii_sink.font;
+ unsigned char ch;
+#ifndef OLDXAW
+ TextWidget ctx = (TextWidget)XtParent(w);
+ XawTextBlock block;
+ XawTextAnchor *anchor;
+ XawTextEntity *entity;
+ XawTextProperty *property;
+
+ if (XawTextSourceAnchorAndEntity(XawTextGetSource(XtParent(w)),
+ sink->ascii_sink.cursor_position,
+ &anchor, &entity)) {
+ if ((property = XawTextSinkGetProperty((Widget)sink,
+ entity->property)) != NULL &&
+ (property->mask & XAW_TPROP_FONT))
+ font = property->font;
+ }
+ (void)XawTextSourceRead(XawTextGetSource((Widget)ctx),
+ ctx->text.insertPos, &block, 1);
+ if (!block.length || block.ptr[0] == '\n' || block.ptr[0] == '\t')
+ ch = ' ';
+ else if ((*((unsigned char*)block.ptr) & 0177) < XawSP ||
+ *(unsigned char*)block.ptr == 0177) {
+ if (sink->ascii_sink.display_nonprinting)
+ ch = *((unsigned char*)block.ptr) > 0177 ? '\\' : '^';
+ else
+ ch = ' ';
+ }
+ else
+ ch = *(unsigned char*)block.ptr;
+#else
+ ch = ' ';
+#endif
+
+ rect->width = CharWidth(sink, font, 0, ch);
+ rect->height = font->descent + font->ascent + 1;
+
+ rect->x = sink->ascii_sink.cursor_x;
+ rect->y = sink->ascii_sink.cursor_y - font->ascent;
+}
+
+/* this function is required to support diferent fonts and correctly place
+ * the cursor. There are better ways to calculate the base line, but there is
+ * no place/code (yet) to store this information.
+ */
+static int
+FindCursorY(TextWidget ctx, XawTextPosition position)
+{
+ int y, line, ascent;
+ AsciiSinkObject sink = (AsciiSinkObject)ctx->text.sink;
+#ifndef OLDXAW
+ XawTextAnchor *anchor;
+ XawTextEntity *entity;
+ XawTextProperty *property;
+ XawTextPosition left, right;
+#endif
+
+ for (line = 0; line < ctx->text.lt.lines; line++)
+ if (position < ctx->text.lt.info[line + 1].position)
+ break;
+
+ y = ctx->text.lt.info[line].y;
+#ifndef OLDXAW
+ ascent = 0;
+ left = ctx->text.lt.info[line].position;
+ right = ctx->text.lt.info[line + 1].position;
+ right = XawMin(right, ctx->text.lastPos + 1);
+ while (left < right) {
+ if (XawTextSourceAnchorAndEntity(ctx->text.source, left,
+ &anchor, &entity)) {
+ if ((property = XawTextSinkGetProperty((Widget)sink,
+ entity->property)) != NULL &&
+ (property->mask & XAW_TPROP_FONT))
+ ascent = XawMax(property->font->ascent, ascent);
+ else
+ ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
+ left = anchor->position + entity->offset + entity->length;
+ }
+ else if (anchor) {
+ ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
+ while (entity) {
+ XawTextPosition tmp = anchor->position + entity->offset + entity->length;
+
+ if (tmp > left && tmp < right) {
+ left = tmp;
+ if ((property = XawTextSinkGetProperty((Widget)sink,
+ entity->property)) != NULL &&
+ (property->mask & XAW_TPROP_FONT))
+ ascent = XawMax(property->font->ascent, ascent);
+ else
+ ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
+ }
+ entity = entity->next;
+ }
+ if (entity == NULL)
+ break;
+ }
+ else {
+ ascent = XawMax(sink->ascii_sink.font->ascent, ascent);
+ break;
+ }
+ }
+ if (!ascent)
+ ascent = sink->ascii_sink.font->ascent;
+#else
+ ascent = sink->ascii_sink.font->ascent;
+#endif
+
+ return (y + ascent);
+}
+
+static void
+InsertCursor(Widget w, int x, int y, XawTextInsertState state)
+{
+ AsciiSinkObject sink = (AsciiSinkObject)w;
+ XFontStruct *font = sink->ascii_sink.font;
+ TextWidget ctx = (TextWidget)XtParent(w);
+ XawTextPosition position = XawTextGetInsertionPoint((Widget)ctx);
+ Boolean overflow = (x & 0xffff8000) != 0;
+#ifndef OLDXAW
+ XawTextAnchor *anchor;
+ XawTextEntity *entity;
+ XawTextProperty *property;
+#endif
+
+ if (XtIsRealized((Widget)ctx)) {
+ int fheight;
+ XawTextBlock block;
+ XawTextPosition selection_start, selection_end;
+ Boolean has_selection;
+
+ if (!sink->ascii_sink.echo) {
+ if (sink->ascii_sink.laststate != state) {
+ int width = CharWidth(sink, font, 0, ' ') - 1;
+
+ x = ctx->text.margin.left;
+ y = ctx->text.margin.top;
+ font = sink->ascii_sink.font;
+ fheight = font->ascent + font->descent;
+ if (state == XawisOn) {
+ if (ctx->text.hasfocus)
+ XFillRectangle(XtDisplay(ctx), XtWindow(ctx),
+ sink->ascii_sink.xorgc, x, y,
+ width + 1, fheight + 1);
+ else
+ XDrawRectangle(XtDisplay(ctx), XtWindow(ctx),
+ sink->ascii_sink.xorgc, x, y,
+ width, fheight);
+
+ }
+ else
+ _XawTextSinkClearToBackground(w, x, y,
+ width + 1, fheight + 1);
+ }
+ sink->ascii_sink.cursor_x = x;
+ sink->ascii_sink.cursor_y = y;
+ sink->ascii_sink.laststate = state;
+ return;
+ }
+
+
+ XawTextGetSelectionPos((Widget)ctx, &selection_start, &selection_end);
+ has_selection = selection_start != selection_end;
+
+ if (sink->ascii_sink.laststate != state) {
+ unsigned char ch;
+
+#ifndef OLDXAW
+ if (XawTextSourceAnchorAndEntity(ctx->text.source,
+ position, &anchor, &entity) &&
+ (property = XawTextSinkGetProperty((Widget)sink,
+ entity->property)) != NULL &&
+ (property->mask & XAW_TPROP_FONT))
+ font = property->font;
+ else
+ font = sink->ascii_sink.font;
+#endif
+
+ fheight = font->ascent + font->descent;
+ (void)XawTextSourceRead(XawTextGetSource((Widget)ctx),
+ position, &block, 1);
+ if (!block.length || block.ptr[0] == '\n' || block.ptr[0] == '\t')
+ ch = ' ';
+ else if ((*((unsigned char*)block.ptr) & 0177) < XawSP
+ || *(unsigned char*)block.ptr == 0177) {
+ if (sink->ascii_sink.display_nonprinting)
+ ch = *((unsigned char*)block.ptr) > 0177 ? '\\' : '^';
+ else
+ ch = ' ';
+ }
+ else
+ ch = *(unsigned char*)block.ptr;
+
+ y = FindCursorY(ctx, position);
+ if (ctx->text.hasfocus && !has_selection)
+ XFillRectangle(XtDisplay(ctx), XtWindow(ctx),
+ sink->ascii_sink.xorgc, x, y - font->ascent,
+ CharWidth(sink, font, 0, ch), fheight + 1);
+ else
+ XDrawRectangle(XtDisplay(ctx), XtWindow(ctx),
+ sink->ascii_sink.xorgc, x, y - font->ascent,
+ CharWidth(sink, font, 0, ch) - 1, fheight);
+ }
+ }
+
+ sink->ascii_sink.cursor_x = overflow ? -16384 : x;
+ sink->ascii_sink.cursor_y = y;
+ sink->ascii_sink.laststate = state;
+ sink->ascii_sink.cursor_position = position;
+}
+
+/*
+ * Given two positions, find the distance between them
+ */
+static void
+FindDistance(Widget w, XawTextPosition fromPos, int fromx,
+ XawTextPosition toPos, int *resWidth,
+ XawTextPosition *resPos, int *resHeight)
+{
+#ifndef OLDXAW
+ AsciiSinkObject sink = (AsciiSinkObject)w;
+ TextWidget ctx = (TextWidget)XtParent(w);
+ XFontStruct *font = sink->ascii_sink.font;
+ Widget source = ctx->text.source;
+ XawTextPosition idx, pos;
+ unsigned char c;
+ XawTextBlock blk;
+ int i, rWidth, ascent = 0, descent = 0;
+ XawTextAnchor *anchor;
+ XawTextEntity *entity;
+ XawTextProperty *property;
+ Cardinal length;
+ Bool done = False;
+
+ pos = idx = fromPos;
+ rWidth = 0;
+ c = 0;
+
+ while (!done) {
+ if (XawTextSourceAnchorAndEntity(source, pos, &anchor, &entity)) {
+ length = anchor->position + entity->offset + entity->length;
+ length = XawMin(toPos, length) - pos;
+ if ((property = XawTextSinkGetProperty((Widget)sink,
+ entity->property)) != NULL &&
+ (property->mask & XAW_TPROP_FONT))
+ font = property->font;
+ else
+ font = sink->ascii_sink.font;
+ }
+ else {
+ if (anchor) {
+ while (entity && anchor->position + entity->offset < pos)
+ entity = entity->next;
+ if (entity) {
+ length = anchor->position + entity->offset;
+ length = XawMin(toPos, length) - pos;
+ }
+ else
+ length = XawMin(toPos - pos, 4096);
+ }
+ else
+ length = XawMin(toPos - pos, 4096);
+ font = sink->ascii_sink.font;
+ }
+
+ ascent = XawMax(font->ascent, ascent);
+ descent = XawMax(font->descent, descent);
+
+ pos = XawTextSourceRead(source, pos, &blk, length);
+ if (blk.length == 0 && pos == idx) /* eof reached */
+ break;
+
+ idx = blk.firstPos;
+ for (i = 0; idx < toPos; i++, idx++) {
+ if (i >= blk.length)
+ break;
+ c = blk.ptr[i];
+ rWidth += CharWidth(sink, font, fromx + rWidth, c);
+ if (c == XawLF) {
+ idx++;
+ done = True;
+ break;
+ }
+ }
+ if (idx >= toPos)
+ break;
+ }
+
+ *resPos = idx;
+ *resWidth = rWidth;
+ *resHeight = ascent + descent + 1;
+#else
+ AsciiSinkObject sink = (AsciiSinkObject)w;
+ TextWidget ctx = (TextWidget)XtParent(w);
+ XFontStruct *font = sink->ascii_sink.font;
+ Widget source = ctx->text.source;
+ XawTextPosition idx, pos;
+ unsigned char c;
+ XawTextBlock blk;
+ int i, rWidth;
+
+ pos = XawTextSourceRead(source, fromPos, &blk, toPos - fromPos);
+ rWidth = 0;
+ for (i = 0, idx = fromPos; idx < toPos; i++, idx++) {
+ if (i >= blk.length) {
+ i = 0;
+ pos = XawTextSourceRead(source, pos, &blk, toPos - pos);
+ if (blk.length == 0)
+ break;
+ }
+ c = blk.ptr[i];
+ rWidth += CharWidth(sink, font, fromx + rWidth, c);
+ if (c == XawLF) {
+ idx++;
+ break;
+ }
+ }
+
+ *resPos = idx;
+ *resWidth = rWidth;
+ *resHeight = font->ascent + font->descent + 1;
+#endif
+}
+
+static void
+FindPosition(Widget w, XawTextPosition fromPos, int fromx, int width,
+ Bool stopAtWordBreak, XawTextPosition *resPos,
+ int *resWidth, int *resHeight)
+{
+#ifndef OLDXAW
+ AsciiSinkObject sink = (AsciiSinkObject)w;
+ TextWidget ctx = (TextWidget)XtParent(w);
+ Widget source = ctx->text.source;
+ XFontStruct *font = sink->ascii_sink.font;
+ XawTextPosition idx, pos, whiteSpacePosition = 0;
+ int i, lastWidth, whiteSpaceWidth, rWidth, ascent = 0, descent = 0;
+ Boolean whiteSpaceSeen;
+ unsigned char c;
+ XawTextBlock blk;
+ XawTextAnchor *anchor;
+ XawTextEntity *entity;
+ XawTextProperty *property;
+ Cardinal length;
+ Bool done = False;
+
+ pos = idx = fromPos;
+ rWidth = lastWidth = whiteSpaceWidth = 0;
+ whiteSpaceSeen = False;
+ c = 0;
+
+ while (!done) {
+ font = sink->ascii_sink.font;
+ if (XawTextSourceAnchorAndEntity(source, pos, &anchor, &entity)) {
+ length = anchor->position + entity->offset + entity->length - pos;
+ if ((property = XawTextSinkGetProperty((Widget)sink,
+ entity->property)) != NULL &&
+ (property->mask & XAW_TPROP_FONT))
+ font = property->font;
+ }
+ else {
+ if (anchor) {
+ while (entity && anchor->position + entity->offset < pos)
+ entity = entity->next;
+ if (entity)
+ length = anchor->position + entity->offset - pos;
+ else
+ length = 4096;
+ }
+ else
+ length = 4096;
+ }
+
+ ascent = XawMax(font->ascent, ascent);
+ descent = XawMax(font->descent, descent);
+
+ pos = XawTextSourceRead(source, pos, &blk, length);
+ if (blk.length == 0 && pos == idx) /* eof reached */
+ break;
+
+ idx = blk.firstPos;
+ for (i = 0; rWidth <= width && i < blk.length; i++, idx++) {
+ c = blk.ptr[i];
+ lastWidth = rWidth;
+ rWidth += CharWidth(sink, font, fromx + rWidth, c);
+
+ if (c == XawLF) {
+ idx++;
+ done = True;
+ break;
+ }
+ else if ((c == XawSP || c == XawTAB) && rWidth <= width) {
+ whiteSpaceSeen = True;
+ whiteSpacePosition = idx;
+ whiteSpaceWidth = rWidth;
+ }
+ }
+ if (rWidth > width)
+ break;
+ }
+
+ if (rWidth > width && idx > fromPos) {
+ idx--;
+ rWidth = lastWidth;
+ if (stopAtWordBreak && whiteSpaceSeen) {
+ idx = whiteSpacePosition + 1;
+ rWidth = whiteSpaceWidth;
+ }
+ }
+
+ if (idx >= ctx->text.lastPos && c != XawLF)
+ idx = ctx->text.lastPos + 1;
+
+ *resPos = idx;
+ *resWidth = rWidth;
+ *resHeight = ascent + descent + 1;
+#else
+ AsciiSinkObject sink = (AsciiSinkObject)w;
+ TextWidget ctx = (TextWidget)XtParent(w);
+ Widget source = ctx->text.source;
+ XFontStruct *font = sink->ascii_sink.font;
+ XawTextPosition idx, pos, whiteSpacePosition = 0;
+ int i, lastWidth, whiteSpaceWidth, rWidth;
+ Boolean whiteSpaceSeen;
+ unsigned char c;
+ XawTextBlock blk;
+
+ pos = XawTextSourceRead(source, fromPos, &blk, BUFSIZ);
+ rWidth = lastWidth = whiteSpaceWidth = 0;
+ whiteSpaceSeen = False;
+ c = 0;
+
+ for (i = 0, idx = fromPos; rWidth <= width; i++, idx++) {
+ if (i >= blk.length) {
+ i = 0;
+ pos = XawTextSourceRead(source, pos, &blk, BUFSIZ);
+ if (blk.length == 0)
+ break;
+ }
+ c = blk.ptr[i];
+ lastWidth = rWidth;
+ rWidth += CharWidth(sink, font, fromx + rWidth, c);
+
+ if (c == XawLF) {
+ idx++;
+ break;
+ }
+ else if ((c == XawSP || c == XawTAB) && rWidth <= width) {
+ whiteSpaceSeen = True;
+ whiteSpacePosition = idx;
+ whiteSpaceWidth = rWidth;
+ }
+ }
+
+ if (rWidth > width && idx > fromPos) {
+ idx--;
+ rWidth = lastWidth;
+ if (stopAtWordBreak && whiteSpaceSeen) {
+ idx = whiteSpacePosition + 1;
+ rWidth = whiteSpaceWidth;
+ }
+ }
+
+ if (idx >= ctx->text.lastPos && c != XawLF)
+ idx = ctx->text.lastPos + 1;
+
+ *resPos = idx;
+ *resWidth = rWidth;
+ *resHeight = font->ascent + font->descent + 1;
+#endif
+}
+
+static void
+Resolve(Widget w, XawTextPosition pos, int fromx, int width,
+ XawTextPosition *pos_return)
+{
+ int resWidth, resHeight;
+ Widget source = XawTextGetSource(XtParent(w));
+
+ FindPosition(w, pos, fromx, width, False, pos_return, &resWidth, &resHeight);
+ if (*pos_return > GETLASTPOS)
+ *pos_return = GETLASTPOS;
+}
+
+static void
+GetGC(AsciiSinkObject sink)
+{
+ XtGCMask valuemask = (GCFont | GCGraphicsExposures | GCClipXOrigin |
+ GCForeground | GCBackground);
+ XGCValues values;
+
+ /* XXX We dont want do share a gc that will change the clip-mask */
+ values.clip_x_origin = (long)sink;
+ values.clip_mask = None;
+ values.font = sink->ascii_sink.font->fid;
+ values.graphics_exposures = False;
+
+ values.foreground = sink->text_sink.foreground;
+ values.background = sink->text_sink.background;
+ sink->ascii_sink.normgc = XtAllocateGC((Widget)sink, 0, valuemask, &values,
+ GCClipMask | GCFont | GCForeground |
+ GCBackground, 0);
+
+ values.foreground = sink->text_sink.background;
+#ifndef OLDXAW
+ values.background = sink->text_sink.cursor_color;
+#else
+ values.background = sink->text_sink.foreground;
+#endif
+ sink->ascii_sink.invgc = XtAllocateGC((Widget)sink, 0, valuemask, &values,
+ GCClipMask | GCFont, 0);
+
+ valuemask |= GCFunction;
+ values.function = GXxor;
+#ifndef OLDXAW
+ values.foreground = sink->text_sink.background ^ sink->text_sink.cursor_color;
+#else
+ values.foreground = sink->text_sink.background ^ sink->text_sink.foreground;
+#endif
+ values.background = 0L;
+ sink->ascii_sink.xorgc = XtAllocateGC((Widget)sink, 0, valuemask,
+ &values, GCClipMask | GCFont, 0);
+
+ XawAsciiSinkResize((Widget)sink);
+}
+
+/* Function:
+ * XawAsciiSinkInitialize
+ *
+ * Parameters:
+ * request - the requested and new values for the object instance
+ * cnew - ""
+ *
+ * Description:
+ * Initializes the TextSink Object.
+ */
+/*ARGSUSED*/
+static void
+XawAsciiSinkInitialize(Widget request, Widget cnew,
+ ArgList args, Cardinal *num_args)
+{
+ AsciiSinkObject sink = (AsciiSinkObject)cnew;
+
+ GetGC(sink);
+
+ if (!sink->ascii_sink.font) XtError("Aborting: no font found\n");
+
+ sink->ascii_sink.cursor_position = 0;
+ sink->ascii_sink.laststate = XawisOff;
+ sink->ascii_sink.cursor_x = sink->ascii_sink.cursor_y = 0;
+}
+
+/*
+ * Function:
+ * XawAsciiSinkDestroy
+ *
+ * Parameters:
+ * w - AsciiSink Object
+ *
+ * Description:
+ * This function cleans up when the object is destroyed.
+ */
+static void
+XawAsciiSinkDestroy(Widget w)
+{
+ AsciiSinkObject sink = (AsciiSinkObject)w;
+
+ XtReleaseGC(w, sink->ascii_sink.normgc);
+ XtReleaseGC(w, sink->ascii_sink.invgc);
+ XtReleaseGC(w, sink->ascii_sink.xorgc);
+
+ sink->ascii_sink.normgc =
+ sink->ascii_sink.invgc =
+ sink->ascii_sink.xorgc = NULL;
+}
+
+static void
+XawAsciiSinkResize(Widget w)
+{
+ TextWidget ctx = (TextWidget)XtParent(w);
+ AsciiSinkObject sink = (AsciiSinkObject)w;
+ XRectangle rect;
+ int width, height;
+
+ if (w->core.widget_class != asciiSinkObjectClass)
+ return;
+
+ rect.x = ctx->text.r_margin.left;
+ rect.y = ctx->text.r_margin.top;
+ width = (int)XtWidth(ctx) - RHMargins(ctx);
+ height = (int)XtHeight(ctx) - RVMargins(ctx);
+ rect.width = width;
+ rect.height = height;
+
+ if (sink->ascii_sink.normgc) {
+ if (width >= 0 && height >= 0)
+ XSetClipRectangles(XtDisplay((Widget)ctx), sink->ascii_sink.normgc,
+ 0, 0, &rect, 1, Unsorted);
+ else
+ XSetClipMask(XtDisplay((Widget)ctx), sink->ascii_sink.normgc, None);
+ }
+ if (sink->ascii_sink.invgc) {
+ if (width >= 0 && height >= 0)
+ XSetClipRectangles(XtDisplay((Widget)ctx), sink->ascii_sink.invgc,
+ 0, 0, &rect, 1, Unsorted);
+ else
+ XSetClipMask(XtDisplay((Widget)ctx), sink->ascii_sink.invgc, None);
+ }
+ if (sink->ascii_sink.xorgc) {
+ if (width >= 0 && height >= 0)
+ XSetClipRectangles(XtDisplay((Widget)ctx), sink->ascii_sink.xorgc,
+ 0, 0, &rect, 1, Unsorted);
+ else
+ XSetClipMask(XtDisplay((Widget)ctx), sink->ascii_sink.xorgc, None);
+ }
+}
+
+/*
+ * Function:
+ * XawAsciiSinkSetValues
+ *
+ * Parameters:
+ * current - current state of the object
+ * request - what was requested
+ * cnew - what the object will become
+ *
+ * Description:
+ * Sets the values for the AsciiSink.
+ *
+ * Returns:
+ * True if redisplay is needed
+ */
+/*ARGSUSED*/
+static Boolean
+XawAsciiSinkSetValues(Widget current, Widget request, Widget cnew,
+ ArgList args, Cardinal *num_args)
+{
+ AsciiSinkObject w = (AsciiSinkObject)cnew;
+ AsciiSinkObject old_w = (AsciiSinkObject)current;
+
+ if (w->ascii_sink.font != old_w->ascii_sink.font
+ || w->text_sink.background != old_w->text_sink.background
+ || w->text_sink.foreground != old_w->text_sink.foreground
+#ifndef OLDXAW
+ || w->text_sink.cursor_color != old_w->text_sink.cursor_color
+ || w->text_sink.properties != old_w->text_sink.properties
+#endif
+ ) {
+#ifdef OLDXAW
+ XtReleaseGC(cnew, w->ascii_sink.normgc);
+ XtReleaseGC(cnew, w->ascii_sink.invgc);
+ XtReleaseGC(cnew, w->ascii_sink.xorgc);
+ GetGC(w);
+#endif
+ ((TextWidget)XtParent(cnew))->text.redisplay_needed = True;
+ }
+ else if (w->ascii_sink.echo != old_w->ascii_sink.echo
+ || w->ascii_sink.display_nonprinting
+ != old_w->ascii_sink.display_nonprinting)
+ ((TextWidget)XtParent(cnew))->text.redisplay_needed = True;
+#ifndef OLDXAW
+ if (w->text_sink.properties != old_w->text_sink.properties) {
+ XawTextProperty *property =
+ XawTextSinkGetProperty(cnew, XrmStringToQuark("default"));
+
+ if (property) {
+ if (property->mask & XAW_TPROP_FONT)
+ w->ascii_sink.font = property->font;
+ if (property->mask & XAW_TPROP_FOREGROUND)
+ w->text_sink.foreground = property->foreground;
+ if (property->mask & XAW_TPROP_BACKGROUND)
+ w->text_sink.background = property->background;
+ }
+ }
+#endif
+
+ return (False);
+}
+
+/*
+ * Function:
+ * MaxLines
+ *
+ * Parameters:
+ * w - AsciiSink Object
+ * height - height to fit lines into
+ *
+ * Description:
+ * Finds the Maximum number of lines that will fit in a given height.
+ *
+ * Returns:
+ * The number of lines that will fit
+ */
+/*ARGSUSED*/
+static int
+MaxLines(Widget w, unsigned int height)
+{
+ AsciiSinkObject sink = (AsciiSinkObject)w;
+ int font_height;
+
+ font_height = sink->ascii_sink.font->ascent + sink->ascii_sink.font->descent + 1;
+
+ return ((int)height / font_height);
+}
+
+/*
+ * Function:
+ * MaxHeight
+ *
+ * Parameters:
+ * w - AsciiSink Object
+ * lines - number of lines
+ *
+ * Description:
+ * Finds the Minium height that will contain a given number lines.
+ *
+ * Returns:
+ * the height
+ */
+static int
+MaxHeight(Widget w, int lines)
+{
+ AsciiSinkObject sink = (AsciiSinkObject)w;
+
+ return (lines * (sink->ascii_sink.font->ascent +
+ sink->ascii_sink.font->descent + 1));
+}
+
+/*
+ * Function:
+ * SetTabs
+ *
+ * Parameters:
+ * w - AsciiSink Object
+ * tab_count - number of tabs in the list
+ * tabs - text positions of the tabs
+ *
+ * Description:
+ * Sets the Tab stops.
+ */
+static void
+SetTabs(Widget w, int tab_count, short *tabs)
+{
+ AsciiSinkObject sink = (AsciiSinkObject)w;
+ int i;
+ Atom XA_FIGURE_WIDTH;
+ unsigned long figure_width = 0;
+ XFontStruct *font = sink->ascii_sink.font;
+
+ /*
+ * Find the figure width of the current font
+ */
+ XA_FIGURE_WIDTH = XInternAtom(XtDisplayOfObject(w), "FIGURE_WIDTH", False);
+ if (XA_FIGURE_WIDTH != None
+ && (!XGetFontProperty(font, XA_FIGURE_WIDTH, &figure_width)
+ || figure_width == 0)) {
+ if (font->per_char && font->min_char_or_byte2 <= '$'
+ && font->max_char_or_byte2 >= '$')
+ figure_width = font->per_char['$' - font->min_char_or_byte2].width;
+ else
+ figure_width = font->max_bounds.width;
+ }
+
+ if (tab_count > sink->text_sink.tab_count) {
+ sink->text_sink.tabs = (Position *)
+ XtRealloc((char*)sink->text_sink.tabs, tab_count * sizeof(Position));
+ sink->text_sink.char_tabs = (short *)
+ XtRealloc((char*)sink->text_sink.char_tabs, tab_count * sizeof(short));
+ }
+
+ for (i = 0 ; i < tab_count ; i++) {
+ sink->text_sink.tabs[i] = tabs[i] * figure_width;
+ sink->text_sink.char_tabs[i] = tabs[i];
+ }
+
+ sink->text_sink.tab_count = tab_count;
+
+#ifndef NO_TAB_FIX
+ {
+ TextWidget ctx = (TextWidget)XtParent(w);
+ ctx->text.redisplay_needed = True;
+ _XawTextBuildLineTable(ctx, ctx->text.lt.top, True);
+ }
+#endif
+}