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-rw-r--r--libXaw/src/List.c2543
1 files changed, 1270 insertions, 1273 deletions
diff --git a/libXaw/src/List.c b/libXaw/src/List.c
index 54ca5168f..14e351842 100644
--- a/libXaw/src/List.c
+++ b/libXaw/src/List.c
@@ -1,1273 +1,1270 @@
-/* $Xorg: List.c,v 1.4 2001/02/09 02:03:44 xorgcvs Exp $ */
-
-/*
-Copyright 1989, 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.
-*/
-/* $XFree86: xc/lib/Xaw/List.c,v 1.16 2001/01/17 19:42:27 dawes Exp $ */
-
-/*
- * List.c - List widget
- *
- * This is a List widget. It allows the user to select an item in a list and
- * notifies the application through a callback function.
- *
- * Created: 8/13/88
- * By: Chris D. Peterson
- * MIT X Consortium
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <stdio.h>
-#include <ctype.h>
-#include <X11/IntrinsicP.h>
-#include <X11/StringDefs.h>
-#include <X11/Xmu/Drawing.h>
-#include <X11/Xaw/ListP.h>
-#include <X11/Xaw/XawInit.h>
-#include "Private.h"
-
-#define HeightLock 1
-#define WidthLock 2
-#define LongestLock 4
-
-#define HeightFree(w) !(((ListWidget)(w))->list.freedoms & HeightLock)
-#define WidthFree(w) !(((ListWidget)(w))->list.freedoms & WidthLock)
-#define LongestFree(w) !(((ListWidget)(w))->list.freedoms & LongestLock)
-
-#define MaxSize 32767
-
-/*
- * Class Methods
- */
-static void XawListDestroy(Widget);
-static void XawListInitialize(Widget, Widget, ArgList, Cardinal*);
-static XtGeometryResult XawListQueryGeometry(Widget, XtWidgetGeometry*,
- XtWidgetGeometry*);
-static void XawListRedisplay(Widget, XEvent*, Region);
-static void XawListResize(Widget);
-static Boolean XawListSetValues(Widget, Widget, Widget, ArgList, Cardinal*);
-
-/*
- * Prototypes
- */
-static void CalculatedValues(Widget);
-static void ChangeSize(Widget, unsigned int, unsigned int);
-static void ClipToShadowInteriorAndLongest(ListWidget, GC*, unsigned int);
-static int CvtToItem(Widget, int, int, int*);
-static void FindCornerItems(Widget, XEvent*, int*, int*);
-static void GetGCs(Widget);
-static void HighlightBackground(Widget, int, int, GC);
-static Bool ItemInRectangle(Widget, int, int, int);
-static Bool Layout(Widget, Bool, Bool, Dimension*, Dimension*);
-static void PaintItemName(Widget, int);
-static void ResetList(Widget, Bool, Bool);
-
-/*
- * Actions
- */
-static void Notify(Widget, XEvent*, String*, Cardinal*);
-static void Set(Widget, XEvent*, String*, Cardinal*);
-static void Unset(Widget, XEvent*, String*, Cardinal*);
-
-/*
- * Initialization
- */
-static char defaultTranslations[] =
-"<Btn1Down>:" "Set()\n"
-"<Btn1Up>:" "Notify()\n"
-;
-
-#define offset(field) XtOffsetOf(ListRec, field)
-static XtResource resources[] = {
- {
- XtNforeground,
- XtCForeground,
- XtRPixel,
- sizeof(Pixel),
- offset(list.foreground),
- XtRString,
- XtDefaultForeground
- },
- {
- XtNcursor,
- XtCCursor,
- XtRCursor,
- sizeof(Cursor),
- offset(simple.cursor),
- XtRString,
- "left_ptr"
- },
- {
- XtNfont,
- XtCFont,
- XtRFontStruct,
- sizeof(XFontStruct*),
- offset(list.font),
- XtRString,
- XtDefaultFont
- },
- {
- XtNfontSet,
- XtCFontSet,
- XtRFontSet,
- sizeof(XFontSet),
- offset(list.fontset),
- XtRString,
- XtDefaultFontSet
- },
- {
- XtNlist,
- XtCList,
- XtRPointer,
- sizeof(char**),
- offset(list.list),
-#ifdef notyet
- XtRStringArray,
-#else
- XtRString,
-#endif
- NULL
- },
- {
- XtNdefaultColumns,
- XtCColumns,
- XtRInt,
- sizeof(int),
- offset(list.default_cols),
- XtRImmediate,
- (XtPointer)2
- },
- {
- XtNlongest,
- XtCLongest,
- XtRInt,
- sizeof(int),
- offset(list.longest),
- XtRImmediate,
- (XtPointer)0
- },
- {
- XtNnumberStrings,
- XtCNumberStrings,
- XtRInt,
- sizeof(int),
- offset(list.nitems),
- XtRImmediate,
- (XtPointer)0
- },
- {
- XtNpasteBuffer,
- XtCBoolean,
- XtRBoolean,
- sizeof(Boolean),
- offset(list.paste),
- XtRImmediate,
- (XtPointer)False
- },
- {
- XtNforceColumns,
- XtCColumns,
- XtRBoolean,
- sizeof(Boolean),
- offset(list.force_cols),
- XtRImmediate,
- (XtPointer)False
- },
- {
- XtNverticalList,
- XtCBoolean,
- XtRBoolean,
- sizeof(Boolean),
- offset(list.vertical_cols),
- XtRImmediate,
- (XtPointer)False
- },
- {
- XtNinternalWidth,
- XtCWidth,
- XtRDimension,
- sizeof(Dimension),
- offset(list.internal_width),
- XtRImmediate,
- (XtPointer)2
- },
- {
- XtNinternalHeight,
- XtCHeight,
- XtRDimension,
- sizeof(Dimension),
- offset(list.internal_height),
- XtRImmediate,
- (XtPointer)2
- },
- {
- XtNcolumnSpacing,
- XtCSpacing,
- XtRDimension,
- sizeof(Dimension),
- offset(list.column_space),
- XtRImmediate,
- (XtPointer)6
- },
- {
- XtNrowSpacing,
- XtCSpacing,
- XtRDimension,
- sizeof(Dimension),
- offset(list.row_space),
- XtRImmediate,
- (XtPointer)2
- },
- {
- XtNcallback,
- XtCCallback,
- XtRCallback,
- sizeof(XtPointer),
- offset(list.callback),
- XtRCallback,
- NULL
- },
-#ifndef OLDXAW
- {
- XtNshowCurrent,
- XtCBoolean,
- XtRBoolean,
- sizeof(Boolean),
- offset(list.show_current),
- XtRImmediate,
- (XtPointer)False
- },
-#endif
-};
-#undef offset
-
-static XtActionsRec actions[] = {
- {"Notify", Notify},
- {"Set", Set},
- {"Unset", Unset},
-};
-
-#define Superclass (&simpleClassRec)
-ListClassRec listClassRec = {
- /* core */
- {
- (WidgetClass)Superclass, /* superclass */
- "List", /* class_name */
- sizeof(ListRec), /* widget_size */
- XawInitializeWidgetSet, /* class_initialize */
- NULL, /* class_part_initialize */
- False, /* class_inited */
- XawListInitialize, /* initialize */
- NULL, /* initialize_hook */
- XtInheritRealize, /* realize */
- actions, /* actions */
- XtNumber(actions), /* num_actions */
- resources, /* resources */
- XtNumber(resources), /* num_resources */
- NULLQUARK, /* xrm_class */
- True, /* compress_motion */
- False, /* compress_exposure */
- True, /* compress_enterleave */
- False, /* visible_interest */
- XawListDestroy, /* destroy */
- XawListResize, /* resize */
- XawListRedisplay, /* expose */
- XawListSetValues, /* set_values */
- NULL, /* set_values_hook */
- XtInheritSetValuesAlmost, /* set_values_almost */
- NULL, /* get_values_hook */
- NULL, /* accept_focus */
- XtVersion, /* version */
- NULL, /* callback_private */
- defaultTranslations, /* tm_table */
- XawListQueryGeometry, /* query_geometry */
- },
- /* simple */
- {
- XtInheritChangeSensitive, /* change_sensitive */
- },
- /* list */
- {
- NULL, /* extension */
- },
-};
-
-WidgetClass listWidgetClass = (WidgetClass)&listClassRec;
-
-/*
- * Implementation
- */
-static void
-GetGCs(Widget w)
-{
- XGCValues values;
- ListWidget lw = (ListWidget)w;
-
- values.foreground = lw->list.foreground;
- values.font = lw->list.font->fid;
-
- if (lw->simple.international == True)
- lw->list.normgc = XtAllocateGC(w, 0, GCForeground, &values, GCFont, 0);
- else
- lw->list.normgc = XtGetGC(w, GCForeground | GCFont, &values);
-
- values.foreground = lw->core.background_pixel;
-
- if (lw->simple.international == True)
- lw->list.revgc = XtAllocateGC(w, 0, GCForeground, &values, GCFont, 0);
- else
- lw->list.revgc = XtGetGC(w, GCForeground | GCFont, &values);
-
- values.tile = XmuCreateStippledPixmap(XtScreen(w),
- lw->list.foreground,
- lw->core.background_pixel,
- lw->core.depth);
- values.fill_style = FillTiled;
-
- if (lw->simple.international == True)
- lw->list.graygc = XtAllocateGC(w, 0, GCTile | GCFillStyle,
- &values, GCFont, 0);
- else
- lw->list.graygc = XtGetGC(w, GCFont | GCTile | GCFillStyle, &values);
-}
-
-static void
-CalculatedValues(Widget w)
-{
- int i, len;
- ListWidget lw = (ListWidget)w;
-
- /* If list is NULL then the list will just be the name of the widget */
- if (lw->list.list == NULL) {
- lw->list.list = &lw->core.name;
- lw->list.nitems = 1;
- }
-
- /* Get number of items */
- if (lw->list.nitems == 0)
- for (; lw->list.list[lw->list.nitems] != NULL ; lw->list.nitems++)
- ;
-
- /* Get column width */
- if (LongestFree(lw)) {
- lw->list.longest = 0; /* so it will accumulate real longest below */
-
- for (i = 0 ; i < lw->list.nitems; i++) {
- if (lw->simple.international == True)
- len = XmbTextEscapement(lw->list.fontset, lw->list.list[i],
- strlen(lw->list.list[i]));
- else
- len = XTextWidth(lw->list.font, lw->list.list[i],
- strlen(lw->list.list[i]));
- if (len > lw->list.longest)
- lw->list.longest = len;
- }
- }
-
- lw->list.col_width = lw->list.longest + lw->list.column_space;
-}
-
-/*
- * Function:
- * ResetList
- *
- * Parameters:
- * w - list widget
- * changex - allow the height or width to change?
- * changey - ""
- *
- * Description:
- * Resets the new list when important things change.
- *
- * Returns:
- * True if width or height have been changed
- */
-static void
-ResetList(Widget w, Bool changex, Bool changey)
-{
- Dimension width = XtWidth(w);
- Dimension height = XtHeight(w);
-
- CalculatedValues(w);
-
- if (Layout(w, changex, changey, &width, &height)) {
- if (XtIsComposite(XtParent(w)))
- ChangeSize(w, width, height);
- else {
- XtWidth(w) = width;
- XtHeight(w) = height;
- }
- }
-}
-
-/*
- * Function:
- * ChangeSize
- *
- * Parameters:
- * w - widget to try change the size of
- *
- * Description:
- * Laysout the widget.
- */
-static void
-ChangeSize(Widget w, unsigned int width, unsigned int height)
-{
- XtWidgetGeometry request, reply;
-
- request.request_mode = CWWidth | CWHeight;
- request.width = width;
- request.height = height;
-
- switch (XtMakeGeometryRequest(w, &request, &reply)) {
- case XtGeometryYes:
- case XtGeometryNo:
- break;
- case XtGeometryAlmost:
- Layout(w, request.height != reply.height,
- request.width != reply.width, &reply.width, &reply.height);
- request = reply;
- switch (XtMakeGeometryRequest(w, &request, &reply)) {
- case XtGeometryYes:
- case XtGeometryNo:
- break;
- case XtGeometryAlmost:
- request = reply;
- Layout(w, False, False, &request.width, &request.height);
- request.request_mode = CWWidth | CWHeight;
- XtMakeGeometryRequest(w, &request, &reply);
- /*FALLTROUGH*/
- default:
- break;
- }
- /*FALLTROUGH*/
- default:
- break;
- }
-}
-
-/*ARGSUSED*/
-static void
-XawListInitialize(Widget temp1, Widget cnew, ArgList args, Cardinal *num_args)
-{
- ListWidget lw = (ListWidget)cnew;
-
- if (!lw->list.font) XtError("Aborting: no font found\n");
- if (lw->simple.international && !lw->list.fontset)
- XtError("Aborting: no fontset found\n");
-
- /*
- * Initialize all private resources
- */
- /* record for posterity if we are free */
- lw->list.freedoms = ((XtWidth(lw) != 0) * WidthLock +
- (XtHeight(lw) != 0) * HeightLock +
- (lw->list.longest != 0) * LongestLock);
-
- GetGCs(cnew);
-
- /* Set row height, based on font or fontset */
- if (lw->simple.international == True)
- lw->list.row_height =
- XExtentsOfFontSet(lw->list.fontset)->max_ink_extent.height +
- lw->list.row_space;
- else
- lw->list.row_height = lw->list.font->max_bounds.ascent +
- lw->list.font->max_bounds.descent +
- lw->list.row_space;
-
- ResetList(cnew, WidthFree(lw), HeightFree(lw));
-
- lw->list.highlight = lw->list.is_highlighted = NO_HIGHLIGHT;
-}
-
-/*
- * Function:
- * CvtToItem
- *
- * Parameters:
- * w - list widget
- * xloc - x location
- * yloc - y location
- *
- * Description:
- * Converts Xcoord to item number of item containing that point.
- *
- * Returns:
- * Item number
- */
-static int
-CvtToItem(Widget w, int xloc, int yloc, int *item)
-{
- int one, another;
- ListWidget lw = (ListWidget)w;
- int ret_val = OKAY;
-
- if (lw->list.vertical_cols) {
- one = lw->list.nrows * ((xloc - (int)lw->list.internal_width)
- / lw->list.col_width);
- another = (yloc - (int)lw->list.internal_height) / lw->list.row_height;
- /* If out of range, return minimum possible value */
- if (another >= lw->list.nrows) {
- another = lw->list.nrows - 1;
- ret_val = OUT_OF_RANGE;
- }
- }
- else {
- one = (lw->list.ncols * ((yloc - (int)lw->list.internal_height)
- / lw->list.row_height));
- /* If in right margin handle things right */
- another = (xloc - (int)lw->list.internal_width) / lw->list.col_width;
- if (another >= lw->list.ncols) {
- another = lw->list.ncols - 1;
- ret_val = OUT_OF_RANGE;
- }
- }
- if (xloc < 0 || yloc < 0)
- ret_val = OUT_OF_RANGE;
- if (one < 0)
- one = 0;
- if (another < 0)
- another = 0;
- *item = one + another;
- if (*item >= lw->list.nitems)
- return (OUT_OF_RANGE);
-
- return (ret_val);
-}
-
-/*
- * Function:
- * FindCornerItems
- *
- * Arguments:
- * w - list widget
- * event - event structure that has the rectangle it it
- * ul_ret - the corners (return)
- * lr_ret - ""
- *
- * Description:
- * Find the corners of the rectangle in item space.
- */
-static void
-FindCornerItems(Widget w, XEvent *event, int *ul_ret, int *lr_ret)
-{
- int xloc, yloc;
-
- xloc = event->xexpose.x;
- yloc = event->xexpose.y;
- CvtToItem(w, xloc, yloc, ul_ret);
- xloc += event->xexpose.width;
- yloc += event->xexpose.height;
- CvtToItem(w, xloc, yloc, lr_ret);
-}
-
-/*
- * Function:
- * ItemInRectangle
- *
- * Parameters:
- * w - list widget
- * ul - corners of the rectangle in item space
- * lr - ""
- * item - item to check
- *
- * Returns:
- * True if the item passed is in the given rectangle
- */
-static Bool
-ItemInRectangle(Widget w, int ul, int lr, int item)
-{
- ListWidget lw = (ListWidget)w;
- int mod_item;
- int things;
-
- if (item < ul || item > lr)
- return (False);
- if (lw->list.vertical_cols)
- things = lw->list.nrows;
- else
- things = lw->list.ncols;
-
- mod_item = item % things;
- if ((mod_item >= ul % things) && (mod_item <= lr % things))
- return (True);
-
- return (False);
-}
-
-/* HighlightBackground()
- *
- * Paints the color of the background for the given item. It performs
- * clipping to the interior of internal_width/height by hand, as its a
- * simple calculation and probably much faster than using Xlib and a clip mask.
- *
- * x, y - ul corner of the area item occupies.
- * gc - the gc to use to paint this rectangle
- */
-static void
-HighlightBackground(Widget w, int x, int y, GC gc)
-{
- ListWidget lw = (ListWidget)w;
- Dimension width = lw->list.col_width;
- Dimension height = lw->list.row_height;
- Dimension frame_limited_width = XtWidth(w) - lw->list.internal_width - x;
- Dimension frame_limited_height= XtHeight(w) - lw->list.internal_height - y;
-
- /* Clip the rectangle width and height to the edge of the drawable area */
- if (width > frame_limited_width)
- width = frame_limited_width;
- if (height > frame_limited_height)
- height = frame_limited_height;
-
- /* Clip the rectangle x and y to the edge of the drawable area */
- if (x < lw->list.internal_width) {
- width = width - (lw->list.internal_width - x);
- x = lw->list.internal_width;
- }
- if (y < lw->list.internal_height) {
- height = height - (lw->list.internal_height - y);
- y = lw->list.internal_height;
- }
-
- if (gc == lw->list.revgc && lw->core.background_pixmap != XtUnspecifiedPixmap)
- XClearArea(XtDisplay(w), XtWindow(w), x, y, width, height, False);
- else
- XFillRectangle(XtDisplay(w), XtWindow(w), gc, x, y, width, height);
-}
-
-
-/* ClipToShadowInteriorAndLongest()
- *
- * Converts the passed gc so that any drawing done with that GC will not
- * write in the empty margin (specified by internal_width/height) (which also
- * prevents erasing the shadow. It also clips against the value longest.
- * If the user doesn't set longest, this has no effect (as longest is the
- * maximum of all item lengths). If the user does specify, say, 80 pixel
- * columns, though, this prevents items from overwriting other items.
- */
-static void
-ClipToShadowInteriorAndLongest(ListWidget lw, GC *gc_p, unsigned int x)
-{
- XRectangle rect;
-
- rect.x = x;
- rect.y = lw->list.internal_height;
- rect.height = XtHeight(lw) - (lw->list.internal_height << 1);
- rect.width = XtWidth(lw) - lw->list.internal_width - x;
- if (rect.width > lw->list.longest)
- rect.width = lw->list.longest;
-
- XSetClipRectangles(XtDisplay((Widget)lw), *gc_p, 0, 0, &rect, 1, YXBanded);
-}
-
-static void
-PaintItemName(Widget w, int item)
-{
- char *str;
- GC gc;
- int x, y, str_y;
- ListWidget lw = (ListWidget)w;
- XFontSetExtents *ext = XExtentsOfFontSet(lw->list.fontset);
-
- if (!XtIsRealized(w) || item > lw->list.nitems)
- return;
-
- if (lw->list.vertical_cols) {
- x = lw->list.col_width * (item / lw->list.nrows)
- + lw->list.internal_width;
- y = lw->list.row_height * (item % lw->list.nrows)
- + lw->list.internal_height;
- }
- else {
- x = lw->list.col_width * (item % lw->list.ncols)
- + lw->list.internal_width;
- y = lw->list.row_height * (item / lw->list.ncols)
- + lw->list.internal_height;
- }
-
- if ( lw->simple.international == True )
- str_y = y + XawAbs(ext->max_ink_extent.y);
- else
- str_y = y + lw->list.font->max_bounds.ascent;
-
- if (item == lw->list.is_highlighted) {
- if (item == lw->list.highlight) {
- gc = lw->list.revgc;
- HighlightBackground(w, x, y, lw->list.normgc);
- }
- else {
- if (XtIsSensitive(w))
- gc = lw->list.normgc;
- else
- gc = lw->list.graygc;
- HighlightBackground(w, x, y, lw->list.revgc);
- lw->list.is_highlighted = NO_HIGHLIGHT;
- }
- }
- else {
- if (item == lw->list.highlight) {
- gc = lw->list.revgc;
- HighlightBackground(w, x, y, lw->list.normgc);
- lw->list.is_highlighted = item;
- }
- else {
- if (XtIsSensitive(w))
- gc = lw->list.normgc;
- else
- gc = lw->list.graygc;
- }
- }
-
- /* List's overall width contains the same number of inter-column
- column_space's as columns. There should thus be a half
- column_width margin on each side of each column.
- The row case is symmetric */
-
- x += lw->list.column_space >> 1;
- str_y += lw->list.row_space >> 1;
-
- str = lw->list.list[item]; /* draw it */
-
- ClipToShadowInteriorAndLongest(lw, &gc, x);
-
- if (lw->simple.international == True)
- XmbDrawString(XtDisplay(w), XtWindow(w), lw->list.fontset,
- gc, x, str_y, str, strlen(str));
- else
- XDrawString(XtDisplay(w), XtWindow(w), gc, x, str_y, str, strlen(str));
-
- XSetClipMask(XtDisplay(w), gc, None);
-}
-
-static void
-XawListRedisplay(Widget w, XEvent *event, Region region)
-{
- int item; /* an item to work with */
- int ul_item, lr_item; /* corners of items we need to paint */
- ListWidget lw = (ListWidget)w;
-
- if (event == NULL) {
- ul_item = 0;
- lr_item = lw->list.nrows * lw->list.ncols - 1;
- XClearWindow(XtDisplay(w), XtWindow(w));
- }
- else
- FindCornerItems(w, event, &ul_item, &lr_item);
-
- if (Superclass->core_class.expose)
- (Superclass->core_class.expose)(w, event, region);
-
- for (item = ul_item; item <= lr_item && item < lw->list.nitems; item++)
- if (ItemInRectangle(w, ul_item, lr_item, item))
- PaintItemName(w, item);
-}
-
-/* XawListQueryGeometry()
- *
- * This tells the parent what size we would like to be
- * given certain constraints.
- * w - the widget.
- * intended - what the parent intends to do with us.
- * requested - what we want to happen */
-static XtGeometryResult
-XawListQueryGeometry(Widget w, XtWidgetGeometry *intended,
- XtWidgetGeometry *requested)
-{
- Dimension new_width, new_height;
- Bool change, width_req, height_req;
-
- width_req = intended->request_mode & CWWidth;
- height_req = intended->request_mode & CWHeight;
-
- if (width_req)
- new_width = intended->width;
- else
- new_width = XtWidth(w);
-
- if (height_req)
- new_height = intended->height;
- else
- new_height = XtHeight(w);
-
- requested->request_mode = 0;
-
- /*
- * We only care about our height and width
- */
- if (!width_req && !height_req)
- return (XtGeometryYes);
-
- change = Layout(w, !width_req, !height_req, &new_width, &new_height);
-
- requested->request_mode |= CWWidth;
- requested->width = new_width;
- requested->request_mode |= CWHeight;
- requested->height = new_height;
-
- if (change)
- return (XtGeometryAlmost);
-
- return (XtGeometryYes);
-}
-
-static void
-XawListResize(Widget w)
-{
- Dimension width, height;
-
- width = XtWidth(w);
- height = XtHeight(w);
-
- if (Layout(w, False, False, &width, &height))
- XtAppWarning(XtWidgetToApplicationContext(w),
- "List Widget: Size changed when it shouldn't "
- "have when resising.");
-}
-
-/* Layout()
- *
- * lays out the item in the list.
- * w - the widget.
- * xfree, yfree - True if we are free to resize the widget in
- * this direction.
- * width, height- the is the current width and height that we are going
- * we are going to layout the list widget to,
- * depending on xfree and yfree of course.
- *
- * Return:
- * True if width or height have been changed */
-static Bool
-Layout(Widget w, Bool xfree, Bool yfree, Dimension *width, Dimension *height)
-{
- ListWidget lw = (ListWidget)w;
- Bool change = False;
- unsigned long width2 = 0, height2 = 0;
-
- /*
- * If force columns is set then always use number of columns specified
- * by default_cols
- */
- if (lw->list.force_cols) {
- lw->list.ncols = lw->list.default_cols;
- if (lw->list.ncols <= 0)
- lw->list.ncols = 1;
- lw->list.nrows = ((lw->list.nitems - 1) / lw->list.ncols) + 1;
- if (xfree) {
- /* this counts the same number
- of inter-column column_space 's as columns. There should thus
- be a half column_space margin on each side of each column...*/
- width2 = lw->list.ncols * lw->list.col_width +
- (lw->list.internal_width << 1);
- change = True;
- }
- if (yfree) {
- height2 = lw->list.nrows * lw->list.row_height +
- (lw->list.internal_height << 1);
- change = True;
- }
- }
-
- /*
- * If both width and height are free to change the use default_cols
- * to determine the number columns and set new width and height to
- * just fit the window
- */
- else if (xfree && yfree) {
- lw->list.ncols = lw->list.default_cols;
- if (lw->list.ncols <= 0) {
- int wid = (int)XtWidth(lw) - (int)(lw->list.internal_width << 1)
- + (int)lw->list.column_space;
-
- if (wid <= 0 || lw->list.col_width <= 0
- || (lw->list.ncols = wid / lw->list.col_width) <= 0)
- lw->list.ncols = 1;
- }
- width2 = lw->list.ncols * lw->list.col_width
- + (lw->list.internal_width << 1);
- height2 = (lw->list.nrows * lw->list.row_height)
- + (lw->list.internal_height << 1);
- change = True;
- }
-
- /*
- * If the width is fixed then use it to determine the number of columns.
- * If the height is free to move (width still fixed) then resize the height
- * of the widget to fit the current list exactly
- */
- else if (!xfree) {
- lw->list.ncols = ((int)(*width - (lw->list.internal_width << 1))
- / (int)lw->list.col_width);
- if (lw->list.ncols <= 0)
- lw->list.ncols = 1;
- lw->list.nrows = ((lw->list.nitems - 1) / lw->list.ncols) + 1;
- if (yfree) {
- height2 = lw->list.nrows * lw->list.row_height +
- (lw->list.internal_height << 1);
- change = True;
- }
- }
-
- /*
- * The last case is xfree and !yfree we use the height to determine
- * the number of rows and then set the width to just fit the resulting
- * number of columns
- */
- else if (!yfree) {
- lw->list.nrows = ((int)(*height - (lw->list.internal_height << 1))
- / (int)lw->list.row_height);
- if (lw->list.nrows <= 0)
- lw->list.nrows = 1;
- lw->list.ncols = ((lw->list.nitems - 1) / lw->list.nrows) + 1;
- width2 = lw->list.ncols * lw->list.col_width +
- (lw->list.internal_width << 1);
- change = True;
- }
-
- if (!lw->list.force_cols && lw->list.nrows) {
- /*CONSTCOND*/
- while (1) {
- lw->list.nrows = ((lw->list.nitems - 1) / lw->list.ncols) + 1;
- width2 = lw->list.ncols * lw->list.col_width +
- (lw->list.internal_width << 1);
- height2 = lw->list.nrows * lw->list.row_height +
- (lw->list.internal_height << 1);
- if (width2 >= MaxSize && height2 >= MaxSize)
- break;
- if (height2 > MaxSize)
- ++lw->list.ncols;
- else if (width2 > MaxSize && lw->list.ncols > 1)
- --lw->list.ncols;
- else
- break;
- }
- }
- if (width2)
- *width = width2;
- if (height2)
- *height = height2;
-
- return (change);
-}
-
-/* Notify() - Action
- *
- * Notifies the user that a button has been pressed, and
- * calls the callback; if the XtNpasteBuffer resource is true
- * then the name of the item is also put in CUT_BUFFER0 */
-/*ARGSUSED*/
-static void
-Notify(Widget w, XEvent *event, String *params, Cardinal *num_params)
-{
- ListWidget lw = (ListWidget)w;
- int item, item_len;
- XawListReturnStruct ret_value;
-
- /*
- * Find item and if out of range then unhighlight and return
- *
- * If the current item is unhighlighted then the user has aborted the
- * notify, so unhighlight and return
- */
- if ((CvtToItem(w, event->xbutton.x, event->xbutton.y, &item) == OUT_OF_RANGE)
- || lw->list.highlight != item) {
-#ifndef OLDXAW
- if (!lw->list.show_current || lw->list.selected == NO_HIGHLIGHT)
- XawListUnhighlight(w);
- else
- XawListHighlight(w, lw->list.selected);
-#else
- XawListUnhighlight(w);
-#endif
- return;
- }
-
- item_len = strlen(lw->list.list[item]);
-
- if (lw->list.paste) /* if XtNpasteBuffer set then paste it */
- XStoreBytes(XtDisplay(w), lw->list.list[item], item_len);
-
-#ifndef OLDXAW
- lw->list.selected = item;
-#endif
- /*
- * Call Callback function
- */
- ret_value.string = lw->list.list[item];
- ret_value.list_index = item;
-
- XtCallCallbacks(w, XtNcallback, (XtPointer)&ret_value);
-}
-
-/* Unset() - Action
- *
- * unhighlights the current element */
-/*ARGSUSED*/
-static void
-Unset(Widget w, XEvent *event, String *params, Cardinal *num_params)
-{
- XawListUnhighlight(w);
-}
-
-/* Set() - Action
- *
- * Highlights the current element */
-/*ARGSUSED*/
-static void
-Set(Widget w, XEvent *event, String *params, Cardinal *num_params)
-{
- int item;
- ListWidget lw = (ListWidget)w;
-
-#ifndef OLDXAW
- lw->list.selected = lw->list.highlight;
-#endif
- if (CvtToItem(w, event->xbutton.x, event->xbutton.y, &item) == OUT_OF_RANGE)
- XawListUnhighlight(w); /* Unhighlight current item */
- else if (lw->list.is_highlighted != item) /* If this item is not */
- XawListHighlight(w, item); /* highlighted then do it */
-}
-
-/*
- * Set specified arguments into widget
- */
-/*ARGSUSED*/
-static Boolean
-XawListSetValues(Widget current, Widget request, Widget cnew,
- ArgList args, Cardinal *num_args)
-{
- ListWidget cl = (ListWidget)current;
- ListWidget rl = (ListWidget)request;
- ListWidget nl = (ListWidget)cnew;
- Bool redraw = False;
- XFontSetExtents *ext = XExtentsOfFontSet(nl->list.fontset);
-
- /* If the request height/width is different, lock it. Unless its 0. If
- neither new nor 0, leave it as it was. Not in R5 */
- if (XtWidth(nl) != XtWidth(cl))
- nl->list.freedoms |= WidthLock;
- if (XtWidth(nl) == 0)
- nl->list.freedoms &= ~WidthLock;
-
- if (XtHeight(nl) != XtHeight(cl))
- nl->list.freedoms |= HeightLock;
- if (XtHeight(nl) == 0)
- nl->list.freedoms &= ~HeightLock;
-
- if (nl->list.longest != cl->list.longest)
- nl->list.freedoms |= LongestLock;
- if (nl->list.longest == 0)
- nl->list.freedoms &= ~LongestLock;
-
- if (cl->list.foreground != nl->list.foreground ||
- cl->core.background_pixel != nl->core.background_pixel ||
- cl->list.font != nl->list.font) {
- XGCValues values;
-
- XGetGCValues(XtDisplay(current), cl->list.graygc, GCTile, &values);
- XmuReleaseStippledPixmap(XtScreen(current), values.tile);
- XtReleaseGC(current, cl->list.graygc);
- XtReleaseGC(current, cl->list.revgc);
- XtReleaseGC(current, cl->list.normgc);
- GetGCs(cnew);
- redraw = True;
- }
-
- if (cl->list.font != nl->list.font && cl->simple.international == False)
- nl->list.row_height = nl->list.font->max_bounds.ascent
- + nl->list.font->max_bounds.descent
- + nl->list.row_space;
- else if (cl->list.fontset != nl->list.fontset
- && cl->simple.international == True)
- nl->list.row_height = ext->max_ink_extent.height + nl->list.row_space;
-
- /* ...If the above two font(set) change checkers above both failed, check
- if row_space was altered. If one of the above passed, row_height will
- already have been re-calculated */
- else if (cl->list.row_space != nl->list.row_space) {
- if (cl->simple.international == True)
- nl->list.row_height = ext->max_ink_extent.height + nl->list.row_space;
- else
- nl->list.row_height = nl->list.font->max_bounds.ascent
- + nl->list.font->max_bounds.descent
- + nl->list.row_space;
- }
-
- if (XtWidth(cl) != XtWidth(nl) || XtHeight(cl) != XtHeight(nl)
- || cl->list.internal_width != nl->list.internal_width
- || cl->list.internal_height != nl->list.internal_height
- || cl->list.column_space != nl->list.column_space
- || cl->list.row_space != nl->list.row_space
- || cl->list.default_cols != nl->list.default_cols
- || (cl->list.force_cols != nl->list.force_cols
- && rl->list.force_cols != nl->list.ncols)
- || cl->list.vertical_cols != nl->list.vertical_cols
- || cl->list.longest != nl->list.longest
- || cl->list.nitems != nl->list.nitems
- || cl->list.font != nl->list.font
- /* Equiv. fontsets might have different values, but the same fonts,
- so the next comparison is sloppy but not dangerous */
- || cl->list.fontset != nl->list.fontset
- || cl->list.list != nl->list.list) {
- CalculatedValues(cnew);
- Layout(cnew, WidthFree(nl), HeightFree(nl),
- &nl->core.width, &nl->core.height);
- redraw = True;
- }
-
- if (cl->list.list != nl->list.list || cl->list.nitems != nl->list.nitems)
- nl->list.is_highlighted = nl->list.highlight = NO_HIGHLIGHT;
-
- if (cl->core.sensitive != nl->core.sensitive
- || cl->core.ancestor_sensitive != nl->core.ancestor_sensitive) {
- nl->list.highlight = NO_HIGHLIGHT;
- redraw = True;
- }
-
- return (redraw);
-}
-
-static void
-XawListDestroy(Widget w)
-{
- ListWidget lw = (ListWidget)w;
- XGCValues values;
-
- XGetGCValues(XtDisplay(w), lw->list.graygc, GCTile, &values);
- XmuReleaseStippledPixmap(XtScreen(w), values.tile);
- XtReleaseGC(w, lw->list.graygc);
- XtReleaseGC(w, lw->list.revgc);
- XtReleaseGC(w, lw->list.normgc);
-}
-
-/*
- * Function:
- * XawListChange
- *
- * Parameters:
- * w - list widget
- * list - new list
- * nitems - number of items in the list
- * longest - length (in Pixels) of the longest element in the list
- * resize - if True the the list widget will try to resize itself
- *
- * Description:
- * Changes the list being used and shown.
- *
- * Note:
- * If nitems of longest are <= 0 then they will be calculated
- * If nitems is <= 0 then the list needs to be NULL terminated
- */
-void
-XawListChange(Widget w, char **list, int nitems, int longest,
-#if NeedWidePrototypes
- int resize_it
-#else
- Boolean resize_it
-#endif
-)
-{
- ListWidget lw = (ListWidget)w;
- Dimension new_width = XtWidth(w);
- Dimension new_height = XtHeight(w);
-
- lw->list.list = list;
-
- if (nitems <= 0)
- nitems = 0;
- lw->list.nitems = nitems;
- if (longest <= 0)
- longest = 0;
-
- /* If the user passes 0 meaning "calculate it", it must be free */
- if (longest != 0)
- lw->list.freedoms |= LongestLock;
- else
- lw->list.freedoms &= ~LongestLock;
-
- if (resize_it)
- lw->list.freedoms &= ~WidthLock & ~HeightLock;
-
- lw->list.longest = longest;
-
- CalculatedValues(w);
-
- if (Layout(w, WidthFree(w), HeightFree(w), &new_width, &new_height))
- ChangeSize(w, new_width, new_height);
-
- lw->list.is_highlighted = lw->list.highlight = NO_HIGHLIGHT;
- if (XtIsRealized(w))
- XawListRedisplay(w, NULL, NULL);
-}
-
-void
-XawListUnhighlight(Widget w)
-{
- ListWidget lw = (ListWidget)w;
-
- lw->list.highlight = NO_HIGHLIGHT;
- if (lw->list.is_highlighted != NO_HIGHLIGHT)
- PaintItemName(w, lw->list.is_highlighted);
-}
-
-void
-XawListHighlight(Widget w, int item)
-{
- ListWidget lw = (ListWidget)w;
-
- if (XtIsSensitive(w)) {
- lw->list.highlight = item;
- if (lw->list.is_highlighted != NO_HIGHLIGHT)
- PaintItemName(w, lw->list.is_highlighted);
- PaintItemName(w, item);
- }
-}
-
-/*
- * Function:
- * XawListShowCurrent
- *
- * Parameters:
- * w - list widget
- *
- * Returns:
- * Info about the currently highlighted object
- */
-XawListReturnStruct *
-XawListShowCurrent(Widget w)
-{
- ListWidget lw = (ListWidget)w;
- XawListReturnStruct *ret_val;
-
- ret_val = (XawListReturnStruct *)XtMalloc(sizeof(XawListReturnStruct));
-
- ret_val->list_index = lw->list.highlight;
- if (ret_val->list_index == XAW_LIST_NONE)
- ret_val->string = "";
- else
- ret_val->string = lw->list.list[ret_val->list_index];
-
- return (ret_val);
-}
+/*
+Copyright 1989, 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.
+*/
+
+/*
+ * List.c - List widget
+ *
+ * This is a List widget. It allows the user to select an item in a list and
+ * notifies the application through a callback function.
+ *
+ * Created: 8/13/88
+ * By: Chris D. Peterson
+ * MIT X Consortium
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <ctype.h>
+#include <X11/IntrinsicP.h>
+#include <X11/StringDefs.h>
+#include <X11/Xmu/Drawing.h>
+#include <X11/Xaw/ListP.h>
+#include <X11/Xaw/XawInit.h>
+#include "Private.h"
+
+#define HeightLock 1
+#define WidthLock 2
+#define LongestLock 4
+
+#define HeightFree(w) !(((ListWidget)(w))->list.freedoms & HeightLock)
+#define WidthFree(w) !(((ListWidget)(w))->list.freedoms & WidthLock)
+#define LongestFree(w) !(((ListWidget)(w))->list.freedoms & LongestLock)
+
+#define MaxSize 32767
+
+/*
+ * Class Methods
+ */
+static void XawListDestroy(Widget);
+static void XawListInitialize(Widget, Widget, ArgList, Cardinal*);
+static XtGeometryResult XawListQueryGeometry(Widget, XtWidgetGeometry*,
+ XtWidgetGeometry*);
+static void XawListRedisplay(Widget, XEvent*, Region);
+static void XawListResize(Widget);
+static Boolean XawListSetValues(Widget, Widget, Widget, ArgList, Cardinal*);
+
+/*
+ * Prototypes
+ */
+static void CalculatedValues(Widget);
+static void ChangeSize(Widget, unsigned int, unsigned int);
+static void ClipToShadowInteriorAndLongest(ListWidget, GC*, unsigned int);
+static int CvtToItem(Widget, int, int, int*);
+static void FindCornerItems(Widget, XEvent*, int*, int*);
+static void GetGCs(Widget);
+static void HighlightBackground(Widget, int, int, GC);
+static Bool ItemInRectangle(Widget, int, int, int);
+static Bool Layout(Widget, Bool, Bool, Dimension*, Dimension*);
+static void PaintItemName(Widget, int);
+static void ResetList(Widget, Bool, Bool);
+
+/*
+ * Actions
+ */
+static void Notify(Widget, XEvent*, String*, Cardinal*);
+static void Set(Widget, XEvent*, String*, Cardinal*);
+static void Unset(Widget, XEvent*, String*, Cardinal*);
+
+/*
+ * Initialization
+ */
+static char defaultTranslations[] =
+"<Btn1Down>:" "Set()\n"
+"<Btn1Up>:" "Notify()\n"
+;
+
+#define offset(field) XtOffsetOf(ListRec, field)
+static XtResource resources[] = {
+ {
+ XtNforeground,
+ XtCForeground,
+ XtRPixel,
+ sizeof(Pixel),
+ offset(list.foreground),
+ XtRString,
+ XtDefaultForeground
+ },
+ {
+ XtNcursor,
+ XtCCursor,
+ XtRCursor,
+ sizeof(Cursor),
+ offset(simple.cursor),
+ XtRString,
+ "left_ptr"
+ },
+ {
+ XtNfont,
+ XtCFont,
+ XtRFontStruct,
+ sizeof(XFontStruct*),
+ offset(list.font),
+ XtRString,
+ XtDefaultFont
+ },
+ {
+ XtNfontSet,
+ XtCFontSet,
+ XtRFontSet,
+ sizeof(XFontSet),
+ offset(list.fontset),
+ XtRString,
+ XtDefaultFontSet
+ },
+ {
+ XtNlist,
+ XtCList,
+ XtRPointer,
+ sizeof(char**),
+ offset(list.list),
+#ifdef notyet
+ XtRStringArray,
+#else
+ XtRString,
+#endif
+ NULL
+ },
+ {
+ XtNdefaultColumns,
+ XtCColumns,
+ XtRInt,
+ sizeof(int),
+ offset(list.default_cols),
+ XtRImmediate,
+ (XtPointer)2
+ },
+ {
+ XtNlongest,
+ XtCLongest,
+ XtRInt,
+ sizeof(int),
+ offset(list.longest),
+ XtRImmediate,
+ (XtPointer)0
+ },
+ {
+ XtNnumberStrings,
+ XtCNumberStrings,
+ XtRInt,
+ sizeof(int),
+ offset(list.nitems),
+ XtRImmediate,
+ (XtPointer)0
+ },
+ {
+ XtNpasteBuffer,
+ XtCBoolean,
+ XtRBoolean,
+ sizeof(Boolean),
+ offset(list.paste),
+ XtRImmediate,
+ (XtPointer)False
+ },
+ {
+ XtNforceColumns,
+ XtCColumns,
+ XtRBoolean,
+ sizeof(Boolean),
+ offset(list.force_cols),
+ XtRImmediate,
+ (XtPointer)False
+ },
+ {
+ XtNverticalList,
+ XtCBoolean,
+ XtRBoolean,
+ sizeof(Boolean),
+ offset(list.vertical_cols),
+ XtRImmediate,
+ (XtPointer)False
+ },
+ {
+ XtNinternalWidth,
+ XtCWidth,
+ XtRDimension,
+ sizeof(Dimension),
+ offset(list.internal_width),
+ XtRImmediate,
+ (XtPointer)2
+ },
+ {
+ XtNinternalHeight,
+ XtCHeight,
+ XtRDimension,
+ sizeof(Dimension),
+ offset(list.internal_height),
+ XtRImmediate,
+ (XtPointer)2
+ },
+ {
+ XtNcolumnSpacing,
+ XtCSpacing,
+ XtRDimension,
+ sizeof(Dimension),
+ offset(list.column_space),
+ XtRImmediate,
+ (XtPointer)6
+ },
+ {
+ XtNrowSpacing,
+ XtCSpacing,
+ XtRDimension,
+ sizeof(Dimension),
+ offset(list.row_space),
+ XtRImmediate,
+ (XtPointer)2
+ },
+ {
+ XtNcallback,
+ XtCCallback,
+ XtRCallback,
+ sizeof(XtPointer),
+ offset(list.callback),
+ XtRCallback,
+ NULL
+ },
+#ifndef OLDXAW
+ {
+ XtNshowCurrent,
+ XtCBoolean,
+ XtRBoolean,
+ sizeof(Boolean),
+ offset(list.show_current),
+ XtRImmediate,
+ (XtPointer)False
+ },
+#endif
+};
+#undef offset
+
+static XtActionsRec actions[] = {
+ {"Notify", Notify},
+ {"Set", Set},
+ {"Unset", Unset},
+};
+
+#define Superclass (&simpleClassRec)
+ListClassRec listClassRec = {
+ /* core */
+ {
+ (WidgetClass)Superclass, /* superclass */
+ "List", /* class_name */
+ sizeof(ListRec), /* widget_size */
+ XawInitializeWidgetSet, /* class_initialize */
+ NULL, /* class_part_initialize */
+ False, /* class_inited */
+ XawListInitialize, /* initialize */
+ NULL, /* initialize_hook */
+ XtInheritRealize, /* realize */
+ actions, /* actions */
+ XtNumber(actions), /* num_actions */
+ resources, /* resources */
+ XtNumber(resources), /* num_resources */
+ NULLQUARK, /* xrm_class */
+ True, /* compress_motion */
+ False, /* compress_exposure */
+ True, /* compress_enterleave */
+ False, /* visible_interest */
+ XawListDestroy, /* destroy */
+ XawListResize, /* resize */
+ XawListRedisplay, /* expose */
+ XawListSetValues, /* set_values */
+ NULL, /* set_values_hook */
+ XtInheritSetValuesAlmost, /* set_values_almost */
+ NULL, /* get_values_hook */
+ NULL, /* accept_focus */
+ XtVersion, /* version */
+ NULL, /* callback_private */
+ defaultTranslations, /* tm_table */
+ XawListQueryGeometry, /* query_geometry */
+ },
+ /* simple */
+ {
+ XtInheritChangeSensitive, /* change_sensitive */
+ },
+ /* list */
+ {
+ NULL, /* extension */
+ },
+};
+
+WidgetClass listWidgetClass = (WidgetClass)&listClassRec;
+
+/*
+ * Implementation
+ */
+static void
+GetGCs(Widget w)
+{
+ XGCValues values;
+ ListWidget lw = (ListWidget)w;
+
+ values.foreground = lw->list.foreground;
+ values.font = lw->list.font->fid;
+
+ if (lw->simple.international == True)
+ lw->list.normgc = XtAllocateGC(w, 0, GCForeground, &values, GCFont, 0);
+ else
+ lw->list.normgc = XtGetGC(w, GCForeground | GCFont, &values);
+
+ values.foreground = lw->core.background_pixel;
+
+ if (lw->simple.international == True)
+ lw->list.revgc = XtAllocateGC(w, 0, GCForeground, &values, GCFont, 0);
+ else
+ lw->list.revgc = XtGetGC(w, GCForeground | GCFont, &values);
+
+ values.tile = XmuCreateStippledPixmap(XtScreen(w),
+ lw->list.foreground,
+ lw->core.background_pixel,
+ lw->core.depth);
+ values.fill_style = FillTiled;
+
+ if (lw->simple.international == True)
+ lw->list.graygc = XtAllocateGC(w, 0, GCTile | GCFillStyle,
+ &values, GCFont, 0);
+ else
+ lw->list.graygc = XtGetGC(w, GCFont | GCTile | GCFillStyle, &values);
+}
+
+static void
+CalculatedValues(Widget w)
+{
+ int i, len;
+ ListWidget lw = (ListWidget)w;
+
+ /* If list is NULL then the list will just be the name of the widget */
+ if (lw->list.list == NULL) {
+ lw->list.list = &lw->core.name;
+ lw->list.nitems = 1;
+ }
+
+ /* Get number of items */
+ if (lw->list.nitems == 0)
+ for (; lw->list.list[lw->list.nitems] != NULL ; lw->list.nitems++)
+ ;
+
+ /* Get column width */
+ if (LongestFree(lw)) {
+ lw->list.longest = 0; /* so it will accumulate real longest below */
+
+ for (i = 0 ; i < lw->list.nitems; i++) {
+ if (lw->simple.international == True)
+ len = XmbTextEscapement(lw->list.fontset, lw->list.list[i],
+ strlen(lw->list.list[i]));
+ else
+ len = XTextWidth(lw->list.font, lw->list.list[i],
+ strlen(lw->list.list[i]));
+ if (len > lw->list.longest)
+ lw->list.longest = len;
+ }
+ }
+
+ lw->list.col_width = lw->list.longest + lw->list.column_space;
+}
+
+/*
+ * Function:
+ * ResetList
+ *
+ * Parameters:
+ * w - list widget
+ * changex - allow the height or width to change?
+ * changey - ""
+ *
+ * Description:
+ * Resets the new list when important things change.
+ *
+ * Returns:
+ * True if width or height have been changed
+ */
+static void
+ResetList(Widget w, Bool changex, Bool changey)
+{
+ Dimension width = XtWidth(w);
+ Dimension height = XtHeight(w);
+
+ CalculatedValues(w);
+
+ if (Layout(w, changex, changey, &width, &height)) {
+ if (XtIsComposite(XtParent(w)))
+ ChangeSize(w, width, height);
+ else {
+ XtWidth(w) = width;
+ XtHeight(w) = height;
+ }
+ }
+}
+
+/*
+ * Function:
+ * ChangeSize
+ *
+ * Parameters:
+ * w - widget to try change the size of
+ *
+ * Description:
+ * Laysout the widget.
+ */
+static void
+ChangeSize(Widget w, unsigned int width, unsigned int height)
+{
+ XtWidgetGeometry request, reply;
+
+ request.request_mode = CWWidth | CWHeight;
+ request.width = width;
+ request.height = height;
+
+ switch (XtMakeGeometryRequest(w, &request, &reply)) {
+ case XtGeometryYes:
+ case XtGeometryNo:
+ break;
+ case XtGeometryAlmost:
+ Layout(w, request.height != reply.height,
+ request.width != reply.width, &reply.width, &reply.height);
+ request = reply;
+ switch (XtMakeGeometryRequest(w, &request, &reply)) {
+ case XtGeometryYes:
+ case XtGeometryNo:
+ break;
+ case XtGeometryAlmost:
+ request = reply;
+ Layout(w, False, False, &request.width, &request.height);
+ request.request_mode = CWWidth | CWHeight;
+ XtMakeGeometryRequest(w, &request, &reply);
+ /*FALLTROUGH*/
+ default:
+ break;
+ }
+ /*FALLTROUGH*/
+ default:
+ break;
+ }
+}
+
+/*ARGSUSED*/
+static void
+XawListInitialize(Widget temp1, Widget cnew, ArgList args, Cardinal *num_args)
+{
+ ListWidget lw = (ListWidget)cnew;
+
+ if (!lw->list.font) XtError("Aborting: no font found\n");
+ if (lw->simple.international && !lw->list.fontset)
+ XtError("Aborting: no fontset found\n");
+
+ /*
+ * Initialize all private resources
+ */
+ /* record for posterity if we are free */
+ lw->list.freedoms = ((XtWidth(lw) != 0) * WidthLock +
+ (XtHeight(lw) != 0) * HeightLock +
+ (lw->list.longest != 0) * LongestLock);
+
+ GetGCs(cnew);
+
+ /* Set row height, based on font or fontset */
+ if (lw->simple.international == True)
+ lw->list.row_height =
+ XExtentsOfFontSet(lw->list.fontset)->max_ink_extent.height +
+ lw->list.row_space;
+ else
+ lw->list.row_height = lw->list.font->max_bounds.ascent +
+ lw->list.font->max_bounds.descent +
+ lw->list.row_space;
+
+ ResetList(cnew, WidthFree(lw), HeightFree(lw));
+
+ lw->list.highlight = lw->list.is_highlighted = NO_HIGHLIGHT;
+}
+
+/*
+ * Function:
+ * CvtToItem
+ *
+ * Parameters:
+ * w - list widget
+ * xloc - x location
+ * yloc - y location
+ *
+ * Description:
+ * Converts Xcoord to item number of item containing that point.
+ *
+ * Returns:
+ * Item number
+ */
+static int
+CvtToItem(Widget w, int xloc, int yloc, int *item)
+{
+ int one, another;
+ ListWidget lw = (ListWidget)w;
+ int ret_val = OKAY;
+
+ if (lw->list.vertical_cols) {
+ one = lw->list.nrows * ((xloc - (int)lw->list.internal_width)
+ / lw->list.col_width);
+ another = (yloc - (int)lw->list.internal_height) / lw->list.row_height;
+ /* If out of range, return minimum possible value */
+ if (another >= lw->list.nrows) {
+ another = lw->list.nrows - 1;
+ ret_val = OUT_OF_RANGE;
+ }
+ }
+ else {
+ one = (lw->list.ncols * ((yloc - (int)lw->list.internal_height)
+ / lw->list.row_height));
+ /* If in right margin handle things right */
+ another = (xloc - (int)lw->list.internal_width) / lw->list.col_width;
+ if (another >= lw->list.ncols) {
+ another = lw->list.ncols - 1;
+ ret_val = OUT_OF_RANGE;
+ }
+ }
+ if (xloc < 0 || yloc < 0)
+ ret_val = OUT_OF_RANGE;
+ if (one < 0)
+ one = 0;
+ if (another < 0)
+ another = 0;
+ *item = one + another;
+ if (*item >= lw->list.nitems)
+ return (OUT_OF_RANGE);
+
+ return (ret_val);
+}
+
+/*
+ * Function:
+ * FindCornerItems
+ *
+ * Arguments:
+ * w - list widget
+ * event - event structure that has the rectangle it it
+ * ul_ret - the corners (return)
+ * lr_ret - ""
+ *
+ * Description:
+ * Find the corners of the rectangle in item space.
+ */
+static void
+FindCornerItems(Widget w, XEvent *event, int *ul_ret, int *lr_ret)
+{
+ int xloc, yloc;
+
+ xloc = event->xexpose.x;
+ yloc = event->xexpose.y;
+ CvtToItem(w, xloc, yloc, ul_ret);
+ xloc += event->xexpose.width;
+ yloc += event->xexpose.height;
+ CvtToItem(w, xloc, yloc, lr_ret);
+}
+
+/*
+ * Function:
+ * ItemInRectangle
+ *
+ * Parameters:
+ * w - list widget
+ * ul - corners of the rectangle in item space
+ * lr - ""
+ * item - item to check
+ *
+ * Returns:
+ * True if the item passed is in the given rectangle
+ */
+static Bool
+ItemInRectangle(Widget w, int ul, int lr, int item)
+{
+ ListWidget lw = (ListWidget)w;
+ int mod_item;
+ int things;
+
+ if (item < ul || item > lr)
+ return (False);
+ if (lw->list.vertical_cols)
+ things = lw->list.nrows;
+ else
+ things = lw->list.ncols;
+
+ mod_item = item % things;
+ if ((mod_item >= ul % things) && (mod_item <= lr % things))
+ return (True);
+
+ return (False);
+}
+
+/* HighlightBackground()
+ *
+ * Paints the color of the background for the given item. It performs
+ * clipping to the interior of internal_width/height by hand, as its a
+ * simple calculation and probably much faster than using Xlib and a clip mask.
+ *
+ * x, y - ul corner of the area item occupies.
+ * gc - the gc to use to paint this rectangle
+ */
+static void
+HighlightBackground(Widget w, int x, int y, GC gc)
+{
+ ListWidget lw = (ListWidget)w;
+ Dimension width = lw->list.col_width;
+ Dimension height = lw->list.row_height;
+ Dimension frame_limited_width = XtWidth(w) - lw->list.internal_width - x;
+ Dimension frame_limited_height= XtHeight(w) - lw->list.internal_height - y;
+
+ /* Clip the rectangle width and height to the edge of the drawable area */
+ if (width > frame_limited_width)
+ width = frame_limited_width;
+ if (height > frame_limited_height)
+ height = frame_limited_height;
+
+ /* Clip the rectangle x and y to the edge of the drawable area */
+ if (x < lw->list.internal_width) {
+ width = width - (lw->list.internal_width - x);
+ x = lw->list.internal_width;
+ }
+ if (y < lw->list.internal_height) {
+ height = height - (lw->list.internal_height - y);
+ y = lw->list.internal_height;
+ }
+
+ if (gc == lw->list.revgc && lw->core.background_pixmap != XtUnspecifiedPixmap)
+ XClearArea(XtDisplay(w), XtWindow(w), x, y, width, height, False);
+ else
+ XFillRectangle(XtDisplay(w), XtWindow(w), gc, x, y, width, height);
+}
+
+
+/* ClipToShadowInteriorAndLongest()
+ *
+ * Converts the passed gc so that any drawing done with that GC will not
+ * write in the empty margin (specified by internal_width/height) (which also
+ * prevents erasing the shadow. It also clips against the value longest.
+ * If the user doesn't set longest, this has no effect (as longest is the
+ * maximum of all item lengths). If the user does specify, say, 80 pixel
+ * columns, though, this prevents items from overwriting other items.
+ */
+static void
+ClipToShadowInteriorAndLongest(ListWidget lw, GC *gc_p, unsigned int x)
+{
+ XRectangle rect;
+
+ rect.x = x;
+ rect.y = lw->list.internal_height;
+ rect.height = XtHeight(lw) - (lw->list.internal_height << 1);
+ rect.width = XtWidth(lw) - lw->list.internal_width - x;
+ if (rect.width > lw->list.longest)
+ rect.width = lw->list.longest;
+
+ XSetClipRectangles(XtDisplay((Widget)lw), *gc_p, 0, 0, &rect, 1, YXBanded);
+}
+
+static void
+PaintItemName(Widget w, int item)
+{
+ char *str;
+ GC gc;
+ int x, y, str_y;
+ ListWidget lw = (ListWidget)w;
+ XFontSetExtents *ext = XExtentsOfFontSet(lw->list.fontset);
+
+ if (!XtIsRealized(w) || item > lw->list.nitems)
+ return;
+
+ if (lw->list.vertical_cols) {
+ x = lw->list.col_width * (item / lw->list.nrows)
+ + lw->list.internal_width;
+ y = lw->list.row_height * (item % lw->list.nrows)
+ + lw->list.internal_height;
+ }
+ else {
+ x = lw->list.col_width * (item % lw->list.ncols)
+ + lw->list.internal_width;
+ y = lw->list.row_height * (item / lw->list.ncols)
+ + lw->list.internal_height;
+ }
+
+ if ( lw->simple.international == True )
+ str_y = y + XawAbs(ext->max_ink_extent.y);
+ else
+ str_y = y + lw->list.font->max_bounds.ascent;
+
+ if (item == lw->list.is_highlighted) {
+ if (item == lw->list.highlight) {
+ gc = lw->list.revgc;
+ HighlightBackground(w, x, y, lw->list.normgc);
+ }
+ else {
+ if (XtIsSensitive(w))
+ gc = lw->list.normgc;
+ else
+ gc = lw->list.graygc;
+ HighlightBackground(w, x, y, lw->list.revgc);
+ lw->list.is_highlighted = NO_HIGHLIGHT;
+ }
+ }
+ else {
+ if (item == lw->list.highlight) {
+ gc = lw->list.revgc;
+ HighlightBackground(w, x, y, lw->list.normgc);
+ lw->list.is_highlighted = item;
+ }
+ else {
+ if (XtIsSensitive(w))
+ gc = lw->list.normgc;
+ else
+ gc = lw->list.graygc;
+ }
+ }
+
+ /* List's overall width contains the same number of inter-column
+ column_space's as columns. There should thus be a half
+ column_width margin on each side of each column.
+ The row case is symmetric */
+
+ x += lw->list.column_space >> 1;
+ str_y += lw->list.row_space >> 1;
+
+ str = lw->list.list[item]; /* draw it */
+
+ ClipToShadowInteriorAndLongest(lw, &gc, x);
+
+ if (lw->simple.international == True)
+ XmbDrawString(XtDisplay(w), XtWindow(w), lw->list.fontset,
+ gc, x, str_y, str, strlen(str));
+ else
+ XDrawString(XtDisplay(w), XtWindow(w), gc, x, str_y, str, strlen(str));
+
+ XSetClipMask(XtDisplay(w), gc, None);
+}
+
+static void
+XawListRedisplay(Widget w, XEvent *event, Region region)
+{
+ int item; /* an item to work with */
+ int ul_item, lr_item; /* corners of items we need to paint */
+ ListWidget lw = (ListWidget)w;
+
+ if (event == NULL) {
+ ul_item = 0;
+ lr_item = lw->list.nrows * lw->list.ncols - 1;
+ XClearWindow(XtDisplay(w), XtWindow(w));
+ }
+ else
+ FindCornerItems(w, event, &ul_item, &lr_item);
+
+ if (Superclass->core_class.expose)
+ (Superclass->core_class.expose)(w, event, region);
+
+ for (item = ul_item; item <= lr_item && item < lw->list.nitems; item++)
+ if (ItemInRectangle(w, ul_item, lr_item, item))
+ PaintItemName(w, item);
+}
+
+/* XawListQueryGeometry()
+ *
+ * This tells the parent what size we would like to be
+ * given certain constraints.
+ * w - the widget.
+ * intended - what the parent intends to do with us.
+ * requested - what we want to happen */
+static XtGeometryResult
+XawListQueryGeometry(Widget w, XtWidgetGeometry *intended,
+ XtWidgetGeometry *requested)
+{
+ Dimension new_width, new_height;
+ Bool change, width_req, height_req;
+
+ width_req = intended->request_mode & CWWidth;
+ height_req = intended->request_mode & CWHeight;
+
+ if (width_req)
+ new_width = intended->width;
+ else
+ new_width = XtWidth(w);
+
+ if (height_req)
+ new_height = intended->height;
+ else
+ new_height = XtHeight(w);
+
+ requested->request_mode = 0;
+
+ /*
+ * We only care about our height and width
+ */
+ if (!width_req && !height_req)
+ return (XtGeometryYes);
+
+ change = Layout(w, !width_req, !height_req, &new_width, &new_height);
+
+ requested->request_mode |= CWWidth;
+ requested->width = new_width;
+ requested->request_mode |= CWHeight;
+ requested->height = new_height;
+
+ if (change)
+ return (XtGeometryAlmost);
+
+ return (XtGeometryYes);
+}
+
+static void
+XawListResize(Widget w)
+{
+ Dimension width, height;
+
+ width = XtWidth(w);
+ height = XtHeight(w);
+
+ if (Layout(w, False, False, &width, &height))
+ XtAppWarning(XtWidgetToApplicationContext(w),
+ "List Widget: Size changed when it shouldn't "
+ "have when resising.");
+}
+
+/* Layout()
+ *
+ * lays out the item in the list.
+ * w - the widget.
+ * xfree, yfree - True if we are free to resize the widget in
+ * this direction.
+ * width, height- the is the current width and height that we are going
+ * we are going to layout the list widget to,
+ * depending on xfree and yfree of course.
+ *
+ * Return:
+ * True if width or height have been changed */
+static Bool
+Layout(Widget w, Bool xfree, Bool yfree, Dimension *width, Dimension *height)
+{
+ ListWidget lw = (ListWidget)w;
+ Bool change = False;
+ unsigned long width2 = 0, height2 = 0;
+
+ /*
+ * If force columns is set then always use number of columns specified
+ * by default_cols
+ */
+ if (lw->list.force_cols) {
+ lw->list.ncols = lw->list.default_cols;
+ if (lw->list.ncols <= 0)
+ lw->list.ncols = 1;
+ lw->list.nrows = ((lw->list.nitems - 1) / lw->list.ncols) + 1;
+ if (xfree) {
+ /* this counts the same number
+ of inter-column column_space 's as columns. There should thus
+ be a half column_space margin on each side of each column...*/
+ width2 = lw->list.ncols * lw->list.col_width +
+ (lw->list.internal_width << 1);
+ change = True;
+ }
+ if (yfree) {
+ height2 = lw->list.nrows * lw->list.row_height +
+ (lw->list.internal_height << 1);
+ change = True;
+ }
+ }
+
+ /*
+ * If both width and height are free to change the use default_cols
+ * to determine the number columns and set new width and height to
+ * just fit the window
+ */
+ else if (xfree && yfree) {
+ lw->list.ncols = lw->list.default_cols;
+ if (lw->list.ncols <= 0) {
+ int wid = (int)XtWidth(lw) - (int)(lw->list.internal_width << 1)
+ + (int)lw->list.column_space;
+
+ if (wid <= 0 || lw->list.col_width <= 0
+ || (lw->list.ncols = wid / lw->list.col_width) <= 0)
+ lw->list.ncols = 1;
+ }
+ width2 = lw->list.ncols * lw->list.col_width
+ + (lw->list.internal_width << 1);
+ height2 = (lw->list.nrows * lw->list.row_height)
+ + (lw->list.internal_height << 1);
+ change = True;
+ }
+
+ /*
+ * If the width is fixed then use it to determine the number of columns.
+ * If the height is free to move (width still fixed) then resize the height
+ * of the widget to fit the current list exactly
+ */
+ else if (!xfree) {
+ lw->list.ncols = ((int)(*width - (lw->list.internal_width << 1))
+ / (int)lw->list.col_width);
+ if (lw->list.ncols <= 0)
+ lw->list.ncols = 1;
+ lw->list.nrows = ((lw->list.nitems - 1) / lw->list.ncols) + 1;
+ if (yfree) {
+ height2 = lw->list.nrows * lw->list.row_height +
+ (lw->list.internal_height << 1);
+ change = True;
+ }
+ }
+
+ /*
+ * The last case is xfree and !yfree we use the height to determine
+ * the number of rows and then set the width to just fit the resulting
+ * number of columns
+ */
+ else if (!yfree) {
+ lw->list.nrows = ((int)(*height - (lw->list.internal_height << 1))
+ / (int)lw->list.row_height);
+ if (lw->list.nrows <= 0)
+ lw->list.nrows = 1;
+ lw->list.ncols = ((lw->list.nitems - 1) / lw->list.nrows) + 1;
+ width2 = lw->list.ncols * lw->list.col_width +
+ (lw->list.internal_width << 1);
+ change = True;
+ }
+
+ if (!lw->list.force_cols && lw->list.nrows) {
+ /*CONSTCOND*/
+ while (1) {
+ lw->list.nrows = ((lw->list.nitems - 1) / lw->list.ncols) + 1;
+ width2 = lw->list.ncols * lw->list.col_width +
+ (lw->list.internal_width << 1);
+ height2 = lw->list.nrows * lw->list.row_height +
+ (lw->list.internal_height << 1);
+ if (width2 >= MaxSize && height2 >= MaxSize)
+ break;
+ if (height2 > MaxSize)
+ ++lw->list.ncols;
+ else if (width2 > MaxSize && lw->list.ncols > 1)
+ --lw->list.ncols;
+ else
+ break;
+ }
+ }
+ if (width2)
+ *width = width2;
+ if (height2)
+ *height = height2;
+
+ return (change);
+}
+
+/* Notify() - Action
+ *
+ * Notifies the user that a button has been pressed, and
+ * calls the callback; if the XtNpasteBuffer resource is true
+ * then the name of the item is also put in CUT_BUFFER0 */
+/*ARGSUSED*/
+static void
+Notify(Widget w, XEvent *event, String *params, Cardinal *num_params)
+{
+ ListWidget lw = (ListWidget)w;
+ int item, item_len;
+ XawListReturnStruct ret_value;
+
+ /*
+ * Find item and if out of range then unhighlight and return
+ *
+ * If the current item is unhighlighted then the user has aborted the
+ * notify, so unhighlight and return
+ */
+ if ((CvtToItem(w, event->xbutton.x, event->xbutton.y, &item) == OUT_OF_RANGE)
+ || lw->list.highlight != item) {
+#ifndef OLDXAW
+ if (!lw->list.show_current || lw->list.selected == NO_HIGHLIGHT)
+ XawListUnhighlight(w);
+ else
+ XawListHighlight(w, lw->list.selected);
+#else
+ XawListUnhighlight(w);
+#endif
+ return;
+ }
+
+ item_len = strlen(lw->list.list[item]);
+
+ if (lw->list.paste) /* if XtNpasteBuffer set then paste it */
+ XStoreBytes(XtDisplay(w), lw->list.list[item], item_len);
+
+#ifndef OLDXAW
+ lw->list.selected = item;
+#endif
+ /*
+ * Call Callback function
+ */
+ ret_value.string = lw->list.list[item];
+ ret_value.list_index = item;
+
+ XtCallCallbacks(w, XtNcallback, (XtPointer)&ret_value);
+}
+
+/* Unset() - Action
+ *
+ * unhighlights the current element */
+/*ARGSUSED*/
+static void
+Unset(Widget w, XEvent *event, String *params, Cardinal *num_params)
+{
+ XawListUnhighlight(w);
+}
+
+/* Set() - Action
+ *
+ * Highlights the current element */
+/*ARGSUSED*/
+static void
+Set(Widget w, XEvent *event, String *params, Cardinal *num_params)
+{
+ int item;
+ ListWidget lw = (ListWidget)w;
+
+#ifndef OLDXAW
+ lw->list.selected = lw->list.highlight;
+#endif
+ if (CvtToItem(w, event->xbutton.x, event->xbutton.y, &item) == OUT_OF_RANGE)
+ XawListUnhighlight(w); /* Unhighlight current item */
+ else if (lw->list.is_highlighted != item) /* If this item is not */
+ XawListHighlight(w, item); /* highlighted then do it */
+}
+
+/*
+ * Set specified arguments into widget
+ */
+/*ARGSUSED*/
+static Boolean
+XawListSetValues(Widget current, Widget request, Widget cnew,
+ ArgList args, Cardinal *num_args)
+{
+ ListWidget cl = (ListWidget)current;
+ ListWidget rl = (ListWidget)request;
+ ListWidget nl = (ListWidget)cnew;
+ Bool redraw = False;
+ XFontSetExtents *ext = XExtentsOfFontSet(nl->list.fontset);
+
+ /* If the request height/width is different, lock it. Unless its 0. If
+ neither new nor 0, leave it as it was. Not in R5 */
+ if (XtWidth(nl) != XtWidth(cl))
+ nl->list.freedoms |= WidthLock;
+ if (XtWidth(nl) == 0)
+ nl->list.freedoms &= ~WidthLock;
+
+ if (XtHeight(nl) != XtHeight(cl))
+ nl->list.freedoms |= HeightLock;
+ if (XtHeight(nl) == 0)
+ nl->list.freedoms &= ~HeightLock;
+
+ if (nl->list.longest != cl->list.longest)
+ nl->list.freedoms |= LongestLock;
+ if (nl->list.longest == 0)
+ nl->list.freedoms &= ~LongestLock;
+
+ if (cl->list.foreground != nl->list.foreground ||
+ cl->core.background_pixel != nl->core.background_pixel ||
+ cl->list.font != nl->list.font) {
+ XGCValues values;
+
+ XGetGCValues(XtDisplay(current), cl->list.graygc, GCTile, &values);
+ XmuReleaseStippledPixmap(XtScreen(current), values.tile);
+ XtReleaseGC(current, cl->list.graygc);
+ XtReleaseGC(current, cl->list.revgc);
+ XtReleaseGC(current, cl->list.normgc);
+ GetGCs(cnew);
+ redraw = True;
+ }
+
+ if (cl->list.font != nl->list.font && cl->simple.international == False)
+ nl->list.row_height = nl->list.font->max_bounds.ascent
+ + nl->list.font->max_bounds.descent
+ + nl->list.row_space;
+ else if (cl->list.fontset != nl->list.fontset
+ && cl->simple.international == True)
+ nl->list.row_height = ext->max_ink_extent.height + nl->list.row_space;
+
+ /* ...If the above two font(set) change checkers above both failed, check
+ if row_space was altered. If one of the above passed, row_height will
+ already have been re-calculated */
+ else if (cl->list.row_space != nl->list.row_space) {
+ if (cl->simple.international == True)
+ nl->list.row_height = ext->max_ink_extent.height + nl->list.row_space;
+ else
+ nl->list.row_height = nl->list.font->max_bounds.ascent
+ + nl->list.font->max_bounds.descent
+ + nl->list.row_space;
+ }
+
+ if (XtWidth(cl) != XtWidth(nl) || XtHeight(cl) != XtHeight(nl)
+ || cl->list.internal_width != nl->list.internal_width
+ || cl->list.internal_height != nl->list.internal_height
+ || cl->list.column_space != nl->list.column_space
+ || cl->list.row_space != nl->list.row_space
+ || cl->list.default_cols != nl->list.default_cols
+ || (cl->list.force_cols != nl->list.force_cols
+ && rl->list.force_cols != nl->list.ncols)
+ || cl->list.vertical_cols != nl->list.vertical_cols
+ || cl->list.longest != nl->list.longest
+ || cl->list.nitems != nl->list.nitems
+ || cl->list.font != nl->list.font
+ /* Equiv. fontsets might have different values, but the same fonts,
+ so the next comparison is sloppy but not dangerous */
+ || cl->list.fontset != nl->list.fontset
+ || cl->list.list != nl->list.list) {
+ CalculatedValues(cnew);
+ Layout(cnew, WidthFree(nl), HeightFree(nl),
+ &nl->core.width, &nl->core.height);
+ redraw = True;
+ }
+
+ if (cl->list.list != nl->list.list || cl->list.nitems != nl->list.nitems)
+ nl->list.is_highlighted = nl->list.highlight = NO_HIGHLIGHT;
+
+ if (cl->core.sensitive != nl->core.sensitive
+ || cl->core.ancestor_sensitive != nl->core.ancestor_sensitive) {
+ nl->list.highlight = NO_HIGHLIGHT;
+ redraw = True;
+ }
+
+ return (redraw);
+}
+
+static void
+XawListDestroy(Widget w)
+{
+ ListWidget lw = (ListWidget)w;
+ XGCValues values;
+
+ XGetGCValues(XtDisplay(w), lw->list.graygc, GCTile, &values);
+ XmuReleaseStippledPixmap(XtScreen(w), values.tile);
+ XtReleaseGC(w, lw->list.graygc);
+ XtReleaseGC(w, lw->list.revgc);
+ XtReleaseGC(w, lw->list.normgc);
+}
+
+/*
+ * Function:
+ * XawListChange
+ *
+ * Parameters:
+ * w - list widget
+ * list - new list
+ * nitems - number of items in the list
+ * longest - length (in Pixels) of the longest element in the list
+ * resize - if True the the list widget will try to resize itself
+ *
+ * Description:
+ * Changes the list being used and shown.
+ *
+ * Note:
+ * If nitems of longest are <= 0 then they will be calculated
+ * If nitems is <= 0 then the list needs to be NULL terminated
+ */
+void
+XawListChange(Widget w, char **list, int nitems, int longest,
+#if NeedWidePrototypes
+ int resize_it
+#else
+ Boolean resize_it
+#endif
+)
+{
+ ListWidget lw = (ListWidget)w;
+ Dimension new_width = XtWidth(w);
+ Dimension new_height = XtHeight(w);
+
+ lw->list.list = list;
+
+ if (nitems <= 0)
+ nitems = 0;
+ lw->list.nitems = nitems;
+ if (longest <= 0)
+ longest = 0;
+
+ /* If the user passes 0 meaning "calculate it", it must be free */
+ if (longest != 0)
+ lw->list.freedoms |= LongestLock;
+ else
+ lw->list.freedoms &= ~LongestLock;
+
+ if (resize_it)
+ lw->list.freedoms &= ~WidthLock & ~HeightLock;
+
+ lw->list.longest = longest;
+
+ CalculatedValues(w);
+
+ if (Layout(w, WidthFree(w), HeightFree(w), &new_width, &new_height))
+ ChangeSize(w, new_width, new_height);
+
+ lw->list.is_highlighted = lw->list.highlight = NO_HIGHLIGHT;
+ if (XtIsRealized(w))
+ XawListRedisplay(w, NULL, NULL);
+}
+
+void
+XawListUnhighlight(Widget w)
+{
+ ListWidget lw = (ListWidget)w;
+
+ lw->list.highlight = NO_HIGHLIGHT;
+ if (lw->list.is_highlighted != NO_HIGHLIGHT)
+ PaintItemName(w, lw->list.is_highlighted);
+}
+
+void
+XawListHighlight(Widget w, int item)
+{
+ ListWidget lw = (ListWidget)w;
+
+ if (XtIsSensitive(w)) {
+ lw->list.highlight = item;
+ if (lw->list.is_highlighted != NO_HIGHLIGHT)
+ PaintItemName(w, lw->list.is_highlighted);
+ PaintItemName(w, item);
+ }
+}
+
+/*
+ * Function:
+ * XawListShowCurrent
+ *
+ * Parameters:
+ * w - list widget
+ *
+ * Returns:
+ * Info about the currently highlighted object
+ */
+XawListReturnStruct *
+XawListShowCurrent(Widget w)
+{
+ ListWidget lw = (ListWidget)w;
+ XawListReturnStruct *ret_val;
+
+ ret_val = (XawListReturnStruct *)XtMalloc(sizeof(XawListReturnStruct));
+
+ ret_val->list_index = lw->list.highlight;
+ if (ret_val->list_index == XAW_LIST_NONE)
+ ret_val->string = "";
+ else
+ ret_val->string = lw->list.list[ret_val->list_index];
+
+ return (ret_val);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 11:19:28 +0000