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-rw-r--r--libXt/src/GCManager.c725
1 files changed, 361 insertions, 364 deletions
diff --git a/libXt/src/GCManager.c b/libXt/src/GCManager.c
index 5870459c6..1bdffb5e2 100644
--- a/libXt/src/GCManager.c
+++ b/libXt/src/GCManager.c
@@ -1,364 +1,361 @@
-/* $Xorg: GCManager.c,v 1.5 2001/02/09 02:03:54 xorgcvs Exp $ */
-
-/***********************************************************
-Copyright 1993 Sun Microsystems, Inc. All rights reserved.
-
-Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and associated documentation files (the "Software"),
-to deal in the Software without restriction, including without limitation
-the rights to use, copy, modify, merge, publish, distribute, sublicense,
-and/or sell copies of the Software, and to permit persons to whom the
-Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice (including the next
-paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
-
-Copyright 1987, 1988, 1990 by Digital Equipment Corporation, Maynard, Massachusetts.
-
- All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and its
-documentation for any purpose and without fee is hereby granted,
-provided that the above copyright notice appear in all copies and that
-both that copyright notice and this permission notice appear in
-supporting documentation, and that the name of Digital not be
-used in advertising or publicity pertaining to distribution of the
-software without specific, written prior permission.
-
-DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
-DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
-ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
-WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
-ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
-SOFTWARE.
-
-******************************************************************/
-
-/*
-
-Copyright 1987, 1988, 1990, 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/Xt/GCManager.c,v 1.5 2001/08/22 22:52:18 dawes Exp $ */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include "IntrinsicI.h"
-
-
-typedef struct _GCrec {
- unsigned char screen; /* Screen for GC */
- unsigned char depth; /* Depth for GC */
- char dashes; /* Dashes value */
- Pixmap clip_mask; /* Clip_mask value */
- Cardinal ref_count; /* # of shareholders */
- GC gc; /* The GC itself. */
- XtGCMask dynamic_mask; /* Writable values */
- XtGCMask unused_mask; /* Unused values */
- struct _GCrec *next; /* Next GC for this widgetkind. */
-} GCrec, *GCptr;
-
-#define GCVAL(bit,mask,val,default) ((bit&mask) ? val : default)
-
-#define CHECK(bit,comp,default) \
- if ((checkMask & bit) && \
- (GCVAL(bit,valueMask,v->comp,default) != gcv.comp)) return False
-
-#define ALLGCVALS (GCFunction | GCPlaneMask | GCForeground | \
- GCBackground | GCLineWidth | GCLineStyle | \
- GCCapStyle | GCJoinStyle | GCFillStyle | \
- GCFillRule | GCTile | GCStipple | \
- GCTileStipXOrigin | GCTileStipYOrigin | \
- GCFont | GCSubwindowMode | GCGraphicsExposures | \
- GCClipXOrigin | GCClipYOrigin | GCDashOffset | \
- GCArcMode)
-
-static Bool Matches(
- Display *dpy,
- GCptr ptr,
- register XtGCMask valueMask,
- register XGCValues *v,
- XtGCMask readOnlyMask,
- XtGCMask dynamicMask)
-{
- XGCValues gcv;
- register XtGCMask checkMask;
-
- if (readOnlyMask & ptr->dynamic_mask)
- return False;
- if (((ptr->dynamic_mask|ptr->unused_mask) & dynamicMask) != dynamicMask)
- return False;
- if (!XGetGCValues(dpy, ptr->gc, ALLGCVALS, &gcv))
- return False;
- checkMask = readOnlyMask & ~ptr->unused_mask;
- CHECK(GCForeground, foreground, 0);
- CHECK(GCBackground, background, 1);
- CHECK(GCFont, font, ~0UL);
- CHECK(GCFillStyle, fill_style, FillSolid);
- CHECK(GCLineWidth, line_width, 0);
- CHECK(GCFunction, function, GXcopy);
- CHECK(GCGraphicsExposures, graphics_exposures, True);
- CHECK(GCTile, tile, ~0UL);
- CHECK(GCSubwindowMode, subwindow_mode, ClipByChildren);
- CHECK(GCPlaneMask, plane_mask, AllPlanes);
- CHECK(GCLineStyle, line_style, LineSolid);
- CHECK(GCCapStyle, cap_style, CapButt);
- CHECK(GCJoinStyle, join_style, JoinMiter);
- CHECK(GCFillRule, fill_rule, EvenOddRule);
- CHECK(GCArcMode, arc_mode, ArcPieSlice);
- CHECK(GCStipple, stipple, ~0UL);
- CHECK(GCTileStipXOrigin, ts_x_origin, 0);
- CHECK(GCTileStipYOrigin, ts_y_origin, 0);
- CHECK(GCClipXOrigin, clip_x_origin, 0);
- CHECK(GCClipYOrigin, clip_y_origin, 0);
- CHECK(GCDashOffset, dash_offset, 0);
- gcv.clip_mask = ptr->clip_mask;
- CHECK(GCClipMask, clip_mask, None);
- gcv.dashes = ptr->dashes;
- CHECK(GCDashList, dashes, 4);
- valueMask &= ptr->unused_mask | dynamicMask;
- if (valueMask) {
- XChangeGC(dpy, ptr->gc, valueMask, v);
- if (valueMask & GCDashList)
- ptr->dashes = v->dashes;
- if (valueMask & GCClipMask)
- ptr->clip_mask = v->clip_mask;
- }
- ptr->unused_mask &= ~(dynamicMask | readOnlyMask);
- ptr->dynamic_mask |= dynamicMask;
- return True;
-} /* Matches */
-
-/* Called by CloseDisplay to free the per-display GC list */
-void _XtGClistFree(
- Display *dpy,
- register XtPerDisplay pd)
-{
- register GCptr GClist, next;
- register int i;
-
- GClist = pd->GClist;
- while (GClist) {
- next = GClist->next;
- XtFree((char*)GClist);
- GClist = next;
- }
- if (pd->pixmap_tab) {
- for (i = ScreenCount(dpy); --i >= 0; ) {
- if (pd->pixmap_tab[i])
- XtFree((char *)pd->pixmap_tab[i]);
- }
- XtFree((char *)pd->pixmap_tab);
- }
-}
-
-
-/*
- * Return a GC with the given values and characteristics.
- */
-
-GC XtAllocateGC(
- register Widget widget,
- Cardinal depth,
- XtGCMask valueMask,
- XGCValues *values,
- XtGCMask dynamicMask,
- XtGCMask unusedMask)
-{
- register GCptr *prev;
- register GCptr cur;
- Screen *screen;
- register Display *dpy;
- register XtPerDisplay pd;
- Drawable drawable;
- Drawable *pixmaps;
- XtGCMask readOnlyMask;
- GC retval;
- WIDGET_TO_APPCON(widget);
-
- LOCK_APP(app);
- LOCK_PROCESS;
- if (!XtIsWidget(widget))
- widget = _XtWindowedAncestor(widget);
- if (!depth)
- depth = widget->core.depth;
- screen = XtScreen(widget);
- dpy = DisplayOfScreen(screen);
- pd = _XtGetPerDisplay(dpy);
- unusedMask &= ~valueMask;
- readOnlyMask = ~(dynamicMask | unusedMask);
-
- /* Search for existing GC that matches exactly */
- for (prev = &pd->GClist; (cur = *prev); prev = &cur->next) {
- if (cur->depth == depth &&
- ScreenOfDisplay(dpy, cur->screen) == screen &&
- Matches(dpy, cur, valueMask, values, readOnlyMask, dynamicMask)) {
- cur->ref_count++;
- /* Move this GC to front of list */
- *prev = cur->next;
- cur->next = pd->GClist;
- pd->GClist = cur;
- retval = cur->gc;
- UNLOCK_PROCESS;
- UNLOCK_APP(app);
- return retval;
- }
- }
-
- /* No matches, have to create a new one */
- cur = XtNew(GCrec);
- cur->screen = XScreenNumberOfScreen(screen);
- cur->depth = depth;
- cur->ref_count = 1;
- cur->dynamic_mask = dynamicMask;
- cur->unused_mask = (unusedMask & ~dynamicMask);
- cur->dashes = GCVAL(GCDashList, valueMask, values->dashes, 4);
- cur->clip_mask = GCVAL(GCClipMask, valueMask, values->clip_mask, None);
- drawable = 0;
- if (depth == widget->core.depth)
- drawable = XtWindow(widget);
- if (!drawable && depth == (Cardinal) DefaultDepthOfScreen(screen))
- drawable = RootWindowOfScreen(screen);
- if (!drawable) {
- if (!pd->pixmap_tab) {
- int n;
- pd->pixmap_tab = (Drawable **)__XtMalloc((unsigned)ScreenCount(dpy) *
- sizeof(Drawable *));
- for (n = 0; n < ScreenCount(dpy); n++)
- pd->pixmap_tab[n] = NULL;
- }
- pixmaps = pd->pixmap_tab[cur->screen];
- if (!pixmaps) {
- int max, n, *depths;
- depths = XListDepths(dpy, cur->screen, &n);
- n--;
- max = depths[n];
- while (n--) {
- if (depths[n] > max)
- max = depths[n];
- }
- XFree((char *)depths);
- pixmaps = (Drawable *)__XtCalloc((unsigned)max, sizeof(Drawable));
- pd->pixmap_tab[cur->screen] = pixmaps;
- }
- drawable = pixmaps[cur->depth - 1];
- if (!drawable) {
- drawable = XCreatePixmap(dpy, RootWindowOfScreen(screen), 1, 1,
- cur->depth);
- pixmaps[cur->depth - 1] = drawable;
- }
- }
- cur->gc = XCreateGC(dpy, drawable, valueMask, values);
- cur->next = pd->GClist;
- pd->GClist = cur;
- retval = cur->gc;
- UNLOCK_PROCESS;
- UNLOCK_APP(app);
- return retval;
-} /* XtAllocateGC */
-
-/*
- * Return a read-only GC with the given values.
- */
-
-GC XtGetGC(
- register Widget widget,
- XtGCMask valueMask,
- XGCValues *values)
-{
- return XtAllocateGC(widget, 0, valueMask, values, 0, 0);
-} /* XtGetGC */
-
-void XtReleaseGC(
- Widget widget,
- register GC gc)
-{
- register GCptr cur, *prev;
- Display* dpy;
- XtPerDisplay pd;
- WIDGET_TO_APPCON(widget);
-
- LOCK_APP(app);
- LOCK_PROCESS;
- dpy = XtDisplayOfObject(widget);
- pd = _XtGetPerDisplay(dpy);
-
- for (prev = &pd->GClist; (cur = *prev); prev = &cur->next) {
- if (cur->gc == gc) {
- if (--(cur->ref_count) == 0) {
- *prev = cur->next;
- XFreeGC(dpy, gc);
- XtFree((char *) cur);
- }
- break;
- }
- }
- UNLOCK_PROCESS;
- UNLOCK_APP(app);
-} /* XtReleaseGC */
-
-/* The following interface is broken and supplied only for backwards
- * compatibility. It will work properly in all cases only if there
- * is exactly 1 Display created by the application.
- */
-
-void XtDestroyGC(register GC gc)
-{
- GCptr cur, *prev;
- XtAppContext app;
-
- LOCK_PROCESS;
- app = _XtGetProcessContext()->appContextList;
- /* This is awful; we have to search through all the lists
- to find the GC. */
- for (; app; app = app->next) {
- int i;
- for (i = app->count; i ;) {
- Display *dpy = app->list[--i];
- XtPerDisplay pd = _XtGetPerDisplay(dpy);
- for (prev = &pd->GClist; (cur = *prev); prev = &cur->next) {
- if (cur->gc == gc) {
- if (--(cur->ref_count) == 0) {
- *prev = cur->next;
- XFreeGC(dpy, gc);
- XtFree((char *) cur);
- }
- UNLOCK_PROCESS;
- return;
- }
- }
- }
- }
- UNLOCK_PROCESS;
-} /* XtDestroyGC */
+/***********************************************************
+Copyright (c) 1993, Oracle and/or its affiliates. All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice (including the next
+paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
+
+Copyright 1987, 1988, 1990 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+******************************************************************/
+
+/*
+
+Copyright 1987, 1988, 1990, 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.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "IntrinsicI.h"
+
+
+typedef struct _GCrec {
+ unsigned char screen; /* Screen for GC */
+ unsigned char depth; /* Depth for GC */
+ char dashes; /* Dashes value */
+ Pixmap clip_mask; /* Clip_mask value */
+ Cardinal ref_count; /* # of shareholders */
+ GC gc; /* The GC itself. */
+ XtGCMask dynamic_mask; /* Writable values */
+ XtGCMask unused_mask; /* Unused values */
+ struct _GCrec *next; /* Next GC for this widgetkind. */
+} GCrec, *GCptr;
+
+#define GCVAL(bit,mask,val,default) ((bit&mask) ? val : default)
+
+#define CHECK(bit,comp,default) \
+ if ((checkMask & bit) && \
+ (GCVAL(bit,valueMask,v->comp,default) != gcv.comp)) return False
+
+#define ALLGCVALS (GCFunction | GCPlaneMask | GCForeground | \
+ GCBackground | GCLineWidth | GCLineStyle | \
+ GCCapStyle | GCJoinStyle | GCFillStyle | \
+ GCFillRule | GCTile | GCStipple | \
+ GCTileStipXOrigin | GCTileStipYOrigin | \
+ GCFont | GCSubwindowMode | GCGraphicsExposures | \
+ GCClipXOrigin | GCClipYOrigin | GCDashOffset | \
+ GCArcMode)
+
+static Bool Matches(
+ Display *dpy,
+ GCptr ptr,
+ register XtGCMask valueMask,
+ register XGCValues *v,
+ XtGCMask readOnlyMask,
+ XtGCMask dynamicMask)
+{
+ XGCValues gcv;
+ register XtGCMask checkMask;
+
+ if (readOnlyMask & ptr->dynamic_mask)
+ return False;
+ if (((ptr->dynamic_mask|ptr->unused_mask) & dynamicMask) != dynamicMask)
+ return False;
+ if (!XGetGCValues(dpy, ptr->gc, ALLGCVALS, &gcv))
+ return False;
+ checkMask = readOnlyMask & ~ptr->unused_mask;
+ CHECK(GCForeground, foreground, 0);
+ CHECK(GCBackground, background, 1);
+ CHECK(GCFont, font, ~0UL);
+ CHECK(GCFillStyle, fill_style, FillSolid);
+ CHECK(GCLineWidth, line_width, 0);
+ CHECK(GCFunction, function, GXcopy);
+ CHECK(GCGraphicsExposures, graphics_exposures, True);
+ CHECK(GCTile, tile, ~0UL);
+ CHECK(GCSubwindowMode, subwindow_mode, ClipByChildren);
+ CHECK(GCPlaneMask, plane_mask, AllPlanes);
+ CHECK(GCLineStyle, line_style, LineSolid);
+ CHECK(GCCapStyle, cap_style, CapButt);
+ CHECK(GCJoinStyle, join_style, JoinMiter);
+ CHECK(GCFillRule, fill_rule, EvenOddRule);
+ CHECK(GCArcMode, arc_mode, ArcPieSlice);
+ CHECK(GCStipple, stipple, ~0UL);
+ CHECK(GCTileStipXOrigin, ts_x_origin, 0);
+ CHECK(GCTileStipYOrigin, ts_y_origin, 0);
+ CHECK(GCClipXOrigin, clip_x_origin, 0);
+ CHECK(GCClipYOrigin, clip_y_origin, 0);
+ CHECK(GCDashOffset, dash_offset, 0);
+ gcv.clip_mask = ptr->clip_mask;
+ CHECK(GCClipMask, clip_mask, None);
+ gcv.dashes = ptr->dashes;
+ CHECK(GCDashList, dashes, 4);
+ valueMask &= ptr->unused_mask | dynamicMask;
+ if (valueMask) {
+ XChangeGC(dpy, ptr->gc, valueMask, v);
+ if (valueMask & GCDashList)
+ ptr->dashes = v->dashes;
+ if (valueMask & GCClipMask)
+ ptr->clip_mask = v->clip_mask;
+ }
+ ptr->unused_mask &= ~(dynamicMask | readOnlyMask);
+ ptr->dynamic_mask |= dynamicMask;
+ return True;
+} /* Matches */
+
+/* Called by CloseDisplay to free the per-display GC list */
+void _XtGClistFree(
+ Display *dpy,
+ register XtPerDisplay pd)
+{
+ register GCptr GClist, next;
+ register int i;
+
+ GClist = pd->GClist;
+ while (GClist) {
+ next = GClist->next;
+ XtFree((char*)GClist);
+ GClist = next;
+ }
+ if (pd->pixmap_tab) {
+ for (i = ScreenCount(dpy); --i >= 0; ) {
+ if (pd->pixmap_tab[i])
+ XtFree((char *)pd->pixmap_tab[i]);
+ }
+ XtFree((char *)pd->pixmap_tab);
+ }
+}
+
+
+/*
+ * Return a GC with the given values and characteristics.
+ */
+
+GC XtAllocateGC(
+ register Widget widget,
+ Cardinal depth,
+ XtGCMask valueMask,
+ XGCValues *values,
+ XtGCMask dynamicMask,
+ XtGCMask unusedMask)
+{
+ register GCptr *prev;
+ register GCptr cur;
+ Screen *screen;
+ register Display *dpy;
+ register XtPerDisplay pd;
+ Drawable drawable;
+ Drawable *pixmaps;
+ XtGCMask readOnlyMask;
+ GC retval;
+ WIDGET_TO_APPCON(widget);
+
+ LOCK_APP(app);
+ LOCK_PROCESS;
+ if (!XtIsWidget(widget))
+ widget = _XtWindowedAncestor(widget);
+ if (!depth)
+ depth = widget->core.depth;
+ screen = XtScreen(widget);
+ dpy = DisplayOfScreen(screen);
+ pd = _XtGetPerDisplay(dpy);
+ unusedMask &= ~valueMask;
+ readOnlyMask = ~(dynamicMask | unusedMask);
+
+ /* Search for existing GC that matches exactly */
+ for (prev = &pd->GClist; (cur = *prev); prev = &cur->next) {
+ if (cur->depth == depth &&
+ ScreenOfDisplay(dpy, cur->screen) == screen &&
+ Matches(dpy, cur, valueMask, values, readOnlyMask, dynamicMask)) {
+ cur->ref_count++;
+ /* Move this GC to front of list */
+ *prev = cur->next;
+ cur->next = pd->GClist;
+ pd->GClist = cur;
+ retval = cur->gc;
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+ return retval;
+ }
+ }
+
+ /* No matches, have to create a new one */
+ cur = XtNew(GCrec);
+ cur->screen = XScreenNumberOfScreen(screen);
+ cur->depth = depth;
+ cur->ref_count = 1;
+ cur->dynamic_mask = dynamicMask;
+ cur->unused_mask = (unusedMask & ~dynamicMask);
+ cur->dashes = GCVAL(GCDashList, valueMask, values->dashes, 4);
+ cur->clip_mask = GCVAL(GCClipMask, valueMask, values->clip_mask, None);
+ drawable = 0;
+ if (depth == widget->core.depth)
+ drawable = XtWindow(widget);
+ if (!drawable && depth == (Cardinal) DefaultDepthOfScreen(screen))
+ drawable = RootWindowOfScreen(screen);
+ if (!drawable) {
+ if (!pd->pixmap_tab) {
+ int n;
+ pd->pixmap_tab = (Drawable **)__XtMalloc((unsigned)ScreenCount(dpy) *
+ sizeof(Drawable *));
+ for (n = 0; n < ScreenCount(dpy); n++)
+ pd->pixmap_tab[n] = NULL;
+ }
+ pixmaps = pd->pixmap_tab[cur->screen];
+ if (!pixmaps) {
+ int max, n, *depths;
+ depths = XListDepths(dpy, cur->screen, &n);
+ n--;
+ max = depths[n];
+ while (n--) {
+ if (depths[n] > max)
+ max = depths[n];
+ }
+ XFree((char *)depths);
+ pixmaps = (Drawable *)__XtCalloc((unsigned)max, sizeof(Drawable));
+ pd->pixmap_tab[cur->screen] = pixmaps;
+ }
+ drawable = pixmaps[cur->depth - 1];
+ if (!drawable) {
+ drawable = XCreatePixmap(dpy, RootWindowOfScreen(screen), 1, 1,
+ cur->depth);
+ pixmaps[cur->depth - 1] = drawable;
+ }
+ }
+ cur->gc = XCreateGC(dpy, drawable, valueMask, values);
+ cur->next = pd->GClist;
+ pd->GClist = cur;
+ retval = cur->gc;
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+ return retval;
+} /* XtAllocateGC */
+
+/*
+ * Return a read-only GC with the given values.
+ */
+
+GC XtGetGC(
+ register Widget widget,
+ XtGCMask valueMask,
+ XGCValues *values)
+{
+ return XtAllocateGC(widget, 0, valueMask, values, 0, 0);
+} /* XtGetGC */
+
+void XtReleaseGC(
+ Widget widget,
+ register GC gc)
+{
+ register GCptr cur, *prev;
+ Display* dpy;
+ XtPerDisplay pd;
+ WIDGET_TO_APPCON(widget);
+
+ LOCK_APP(app);
+ LOCK_PROCESS;
+ dpy = XtDisplayOfObject(widget);
+ pd = _XtGetPerDisplay(dpy);
+
+ for (prev = &pd->GClist; (cur = *prev); prev = &cur->next) {
+ if (cur->gc == gc) {
+ if (--(cur->ref_count) == 0) {
+ *prev = cur->next;
+ XFreeGC(dpy, gc);
+ XtFree((char *) cur);
+ }
+ break;
+ }
+ }
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+} /* XtReleaseGC */
+
+/* The following interface is broken and supplied only for backwards
+ * compatibility. It will work properly in all cases only if there
+ * is exactly 1 Display created by the application.
+ */
+
+void XtDestroyGC(register GC gc)
+{
+ GCptr cur, *prev;
+ XtAppContext app;
+
+ LOCK_PROCESS;
+ app = _XtGetProcessContext()->appContextList;
+ /* This is awful; we have to search through all the lists
+ to find the GC. */
+ for (; app; app = app->next) {
+ int i;
+ for (i = app->count; i ;) {
+ Display *dpy = app->list[--i];
+ XtPerDisplay pd = _XtGetPerDisplay(dpy);
+ for (prev = &pd->GClist; (cur = *prev); prev = &cur->next) {
+ if (cur->gc == gc) {
+ if (--(cur->ref_count) == 0) {
+ *prev = cur->next;
+ XFreeGC(dpy, gc);
+ XtFree((char *) cur);
+ }
+ UNLOCK_PROCESS;
+ return;
+ }
+ }
+ }
+ }
+ UNLOCK_PROCESS;
+} /* XtDestroyGC */
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-08 20:37:17 +0000