/*
|
/*
|
* tkGC.c --
|
* tkGC.c --
|
*
|
*
|
* This file maintains a database of read-only graphics contexts
|
* This file maintains a database of read-only graphics contexts
|
* for the Tk toolkit, in order to allow GC's to be shared.
|
* for the Tk toolkit, in order to allow GC's to be shared.
|
*
|
*
|
* Copyright (c) 1990-1994 The Regents of the University of California.
|
* Copyright (c) 1990-1994 The Regents of the University of California.
|
* Copyright (c) 1994 Sun Microsystems, Inc.
|
* Copyright (c) 1994 Sun Microsystems, Inc.
|
*
|
*
|
* See the file "license.terms" for information on usage and redistribution
|
* See the file "license.terms" for information on usage and redistribution
|
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
*
|
*
|
* RCS: @(#) $Id: tkGC.c,v 1.1.1.1 2002-01-16 10:25:51 markom Exp $
|
* RCS: @(#) $Id: tkGC.c,v 1.1.1.1 2002-01-16 10:25:51 markom Exp $
|
*/
|
*/
|
|
|
#include "tkPort.h"
|
#include "tkPort.h"
|
#include "tk.h"
|
#include "tk.h"
|
|
|
/* CYGNUS LOCAL, for TkRegisterColorGC. */
|
/* CYGNUS LOCAL, for TkRegisterColorGC. */
|
#include "tkInt.h"
|
#include "tkInt.h"
|
|
|
/*
|
/*
|
* One of the following data structures exists for each GC that is
|
* One of the following data structures exists for each GC that is
|
* currently active. The structure is indexed with two hash tables,
|
* currently active. The structure is indexed with two hash tables,
|
* one based on the values in the graphics context and the other
|
* one based on the values in the graphics context and the other
|
* based on the display and GC identifier.
|
* based on the display and GC identifier.
|
*/
|
*/
|
|
|
typedef struct {
|
typedef struct {
|
GC gc; /* Graphics context. */
|
GC gc; /* Graphics context. */
|
Display *display; /* Display to which gc belongs. */
|
Display *display; /* Display to which gc belongs. */
|
int refCount; /* Number of active uses of gc. */
|
int refCount; /* Number of active uses of gc. */
|
Tcl_HashEntry *valueHashPtr;/* Entry in valueTable (needed when deleting
|
Tcl_HashEntry *valueHashPtr;/* Entry in valueTable (needed when deleting
|
* this structure). */
|
* this structure). */
|
/* CYGNUS LOCAL. */
|
/* CYGNUS LOCAL. */
|
XColor *foreground; /* Foreground color. */
|
XColor *foreground; /* Foreground color. */
|
XColor *background; /* Background color. */
|
XColor *background; /* Background color. */
|
} TkGC;
|
} TkGC;
|
|
|
/*
|
/*
|
* Hash table to map from a GC's values to a TkGC structure describing
|
* Hash table to map from a GC's values to a TkGC structure describing
|
* a GC with those values (used by Tk_GetGC).
|
* a GC with those values (used by Tk_GetGC).
|
*/
|
*/
|
|
|
static Tcl_HashTable valueTable;
|
static Tcl_HashTable valueTable;
|
typedef struct {
|
typedef struct {
|
XGCValues values; /* Desired values for GC. */
|
XGCValues values; /* Desired values for GC. */
|
Display *display; /* Display for which GC is valid. */
|
Display *display; /* Display for which GC is valid. */
|
int screenNum; /* screen number of display */
|
int screenNum; /* screen number of display */
|
int depth; /* and depth for which GC is valid. */
|
int depth; /* and depth for which GC is valid. */
|
/* CYGNUS LOCAL. */
|
/* CYGNUS LOCAL. */
|
XColor *foreground; /* Foreground color. */
|
XColor *foreground; /* Foreground color. */
|
XColor *background; /* Background color. */
|
XColor *background; /* Background color. */
|
} ValueKey;
|
} ValueKey;
|
|
|
/*
|
/*
|
* Hash table for <display + GC> -> TkGC mapping. This table is used by
|
* Hash table for <display + GC> -> TkGC mapping. This table is used by
|
* Tk_FreeGC.
|
* Tk_FreeGC.
|
*/
|
*/
|
|
|
static Tcl_HashTable idTable;
|
static Tcl_HashTable idTable;
|
typedef struct {
|
typedef struct {
|
Display *display; /* Display for which GC was allocated. */
|
Display *display; /* Display for which GC was allocated. */
|
GC gc; /* X's identifier for GC. */
|
GC gc; /* X's identifier for GC. */
|
} IdKey;
|
} IdKey;
|
|
|
static int initialized = 0; /* 0 means static structures haven't been
|
static int initialized = 0; /* 0 means static structures haven't been
|
* initialized yet. */
|
* initialized yet. */
|
|
|
/*
|
/*
|
* Forward declarations for procedures defined in this file:
|
* Forward declarations for procedures defined in this file:
|
*/
|
*/
|
|
|
static void GCInit _ANSI_ARGS_((void));
|
static void GCInit _ANSI_ARGS_((void));
|
|
|
/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
|
*
|
* Tk_GetGC --
|
* Tk_GetGC --
|
*
|
*
|
* Given a desired set of values for a graphics context, find
|
* Given a desired set of values for a graphics context, find
|
* a read-only graphics context with the desired values.
|
* a read-only graphics context with the desired values.
|
*
|
*
|
* Results:
|
* Results:
|
* The return value is the X identifer for the desired graphics
|
* The return value is the X identifer for the desired graphics
|
* context. The caller should never modify this GC, and should
|
* context. The caller should never modify this GC, and should
|
* call Tk_FreeGC when the GC is no longer needed.
|
* call Tk_FreeGC when the GC is no longer needed.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* The GC is added to an internal database with a reference count.
|
* The GC is added to an internal database with a reference count.
|
* For each call to this procedure, there should eventually be a call
|
* For each call to this procedure, there should eventually be a call
|
* to Tk_FreeGC, so that the database can be cleaned up when GC's
|
* to Tk_FreeGC, so that the database can be cleaned up when GC's
|
* aren't needed anymore.
|
* aren't needed anymore.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
/* CYGNUS LOCAL: Rename this to Tk_GetGCColor. The new Tk_GetGC is
|
/* CYGNUS LOCAL: Rename this to Tk_GetGCColor. The new Tk_GetGC is
|
below. */
|
below. */
|
|
|
GC
|
GC
|
Tk_GetGCColor(tkwin, valueMask, valuePtr, foreground, background)
|
Tk_GetGCColor(tkwin, valueMask, valuePtr, foreground, background)
|
Tk_Window tkwin; /* Window in which GC will be used. */
|
Tk_Window tkwin; /* Window in which GC will be used. */
|
register unsigned long valueMask;
|
register unsigned long valueMask;
|
/* 1 bits correspond to values specified
|
/* 1 bits correspond to values specified
|
* in *valuesPtr; other values are set
|
* in *valuesPtr; other values are set
|
* from defaults. */
|
* from defaults. */
|
register XGCValues *valuePtr;
|
register XGCValues *valuePtr;
|
/* Values are specified here for bits set
|
/* Values are specified here for bits set
|
* in valueMask. */
|
* in valueMask. */
|
/* CYGNUS LOCAL. */
|
/* CYGNUS LOCAL. */
|
XColor *foreground; /* Foreground color. */
|
XColor *foreground; /* Foreground color. */
|
XColor *background; /* Background color. */
|
XColor *background; /* Background color. */
|
{
|
{
|
ValueKey valueKey;
|
ValueKey valueKey;
|
IdKey idKey;
|
IdKey idKey;
|
Tcl_HashEntry *valueHashPtr, *idHashPtr;
|
Tcl_HashEntry *valueHashPtr, *idHashPtr;
|
register TkGC *gcPtr;
|
register TkGC *gcPtr;
|
int new;
|
int new;
|
Drawable d, freeDrawable;
|
Drawable d, freeDrawable;
|
|
|
if (!initialized) {
|
if (!initialized) {
|
GCInit();
|
GCInit();
|
}
|
}
|
|
|
#if !defined(__WIN32__) && !defined(_WIN32)
|
#if !defined(__WIN32__) && !defined(_WIN32)
|
/* CYGNUS LOCAL. We only care about special foreground and
|
/* CYGNUS LOCAL. We only care about special foreground and
|
background colors on Windows. If we are on some other
|
background colors on Windows. If we are on some other
|
platform, just ignore them. If we don't do this, we may
|
platform, just ignore them. If we don't do this, we may
|
allocate an unnecessary GC if we have two colors with different
|
allocate an unnecessary GC if we have two colors with different
|
names but the same pixel value. */
|
names but the same pixel value. */
|
foreground = NULL;
|
foreground = NULL;
|
background = NULL;
|
background = NULL;
|
#endif
|
#endif
|
|
|
/*
|
/*
|
* Must zero valueKey at start to clear out pad bytes that may be
|
* Must zero valueKey at start to clear out pad bytes that may be
|
* part of structure on some systems.
|
* part of structure on some systems.
|
*/
|
*/
|
|
|
memset((VOID *) &valueKey, 0, sizeof(valueKey));
|
memset((VOID *) &valueKey, 0, sizeof(valueKey));
|
|
|
/*
|
/*
|
* First, check to see if there's already a GC that will work
|
* First, check to see if there's already a GC that will work
|
* for this request (exact matches only, sorry).
|
* for this request (exact matches only, sorry).
|
*/
|
*/
|
|
|
if (valueMask & GCFunction) {
|
if (valueMask & GCFunction) {
|
valueKey.values.function = valuePtr->function;
|
valueKey.values.function = valuePtr->function;
|
} else {
|
} else {
|
valueKey.values.function = GXcopy;
|
valueKey.values.function = GXcopy;
|
}
|
}
|
if (valueMask & GCPlaneMask) {
|
if (valueMask & GCPlaneMask) {
|
valueKey.values.plane_mask = valuePtr->plane_mask;
|
valueKey.values.plane_mask = valuePtr->plane_mask;
|
} else {
|
} else {
|
valueKey.values.plane_mask = (unsigned) ~0;
|
valueKey.values.plane_mask = (unsigned) ~0;
|
}
|
}
|
if (valueMask & GCForeground) {
|
if (valueMask & GCForeground) {
|
valueKey.values.foreground = valuePtr->foreground;
|
valueKey.values.foreground = valuePtr->foreground;
|
} else {
|
} else {
|
valueKey.values.foreground = 0;
|
valueKey.values.foreground = 0;
|
}
|
}
|
if (valueMask & GCBackground) {
|
if (valueMask & GCBackground) {
|
valueKey.values.background = valuePtr->background;
|
valueKey.values.background = valuePtr->background;
|
} else {
|
} else {
|
valueKey.values.background = 1;
|
valueKey.values.background = 1;
|
}
|
}
|
if (valueMask & GCLineWidth) {
|
if (valueMask & GCLineWidth) {
|
valueKey.values.line_width = valuePtr->line_width;
|
valueKey.values.line_width = valuePtr->line_width;
|
} else {
|
} else {
|
valueKey.values.line_width = 0;
|
valueKey.values.line_width = 0;
|
}
|
}
|
if (valueMask & GCLineStyle) {
|
if (valueMask & GCLineStyle) {
|
valueKey.values.line_style = valuePtr->line_style;
|
valueKey.values.line_style = valuePtr->line_style;
|
} else {
|
} else {
|
valueKey.values.line_style = LineSolid;
|
valueKey.values.line_style = LineSolid;
|
}
|
}
|
if (valueMask & GCCapStyle) {
|
if (valueMask & GCCapStyle) {
|
valueKey.values.cap_style = valuePtr->cap_style;
|
valueKey.values.cap_style = valuePtr->cap_style;
|
} else {
|
} else {
|
valueKey.values.cap_style = CapButt;
|
valueKey.values.cap_style = CapButt;
|
}
|
}
|
if (valueMask & GCJoinStyle) {
|
if (valueMask & GCJoinStyle) {
|
valueKey.values.join_style = valuePtr->join_style;
|
valueKey.values.join_style = valuePtr->join_style;
|
} else {
|
} else {
|
valueKey.values.join_style = JoinMiter;
|
valueKey.values.join_style = JoinMiter;
|
}
|
}
|
if (valueMask & GCFillStyle) {
|
if (valueMask & GCFillStyle) {
|
valueKey.values.fill_style = valuePtr->fill_style;
|
valueKey.values.fill_style = valuePtr->fill_style;
|
} else {
|
} else {
|
valueKey.values.fill_style = FillSolid;
|
valueKey.values.fill_style = FillSolid;
|
}
|
}
|
if (valueMask & GCFillRule) {
|
if (valueMask & GCFillRule) {
|
valueKey.values.fill_rule = valuePtr->fill_rule;
|
valueKey.values.fill_rule = valuePtr->fill_rule;
|
} else {
|
} else {
|
valueKey.values.fill_rule = EvenOddRule;
|
valueKey.values.fill_rule = EvenOddRule;
|
}
|
}
|
if (valueMask & GCArcMode) {
|
if (valueMask & GCArcMode) {
|
valueKey.values.arc_mode = valuePtr->arc_mode;
|
valueKey.values.arc_mode = valuePtr->arc_mode;
|
} else {
|
} else {
|
valueKey.values.arc_mode = ArcPieSlice;
|
valueKey.values.arc_mode = ArcPieSlice;
|
}
|
}
|
if (valueMask & GCTile) {
|
if (valueMask & GCTile) {
|
valueKey.values.tile = valuePtr->tile;
|
valueKey.values.tile = valuePtr->tile;
|
} else {
|
} else {
|
valueKey.values.tile = None;
|
valueKey.values.tile = None;
|
}
|
}
|
if (valueMask & GCStipple) {
|
if (valueMask & GCStipple) {
|
valueKey.values.stipple = valuePtr->stipple;
|
valueKey.values.stipple = valuePtr->stipple;
|
} else {
|
} else {
|
valueKey.values.stipple = None;
|
valueKey.values.stipple = None;
|
}
|
}
|
if (valueMask & GCTileStipXOrigin) {
|
if (valueMask & GCTileStipXOrigin) {
|
valueKey.values.ts_x_origin = valuePtr->ts_x_origin;
|
valueKey.values.ts_x_origin = valuePtr->ts_x_origin;
|
} else {
|
} else {
|
valueKey.values.ts_x_origin = 0;
|
valueKey.values.ts_x_origin = 0;
|
}
|
}
|
if (valueMask & GCTileStipYOrigin) {
|
if (valueMask & GCTileStipYOrigin) {
|
valueKey.values.ts_y_origin = valuePtr->ts_y_origin;
|
valueKey.values.ts_y_origin = valuePtr->ts_y_origin;
|
} else {
|
} else {
|
valueKey.values.ts_y_origin = 0;
|
valueKey.values.ts_y_origin = 0;
|
}
|
}
|
if (valueMask & GCFont) {
|
if (valueMask & GCFont) {
|
valueKey.values.font = valuePtr->font;
|
valueKey.values.font = valuePtr->font;
|
} else {
|
} else {
|
valueKey.values.font = None;
|
valueKey.values.font = None;
|
}
|
}
|
if (valueMask & GCSubwindowMode) {
|
if (valueMask & GCSubwindowMode) {
|
valueKey.values.subwindow_mode = valuePtr->subwindow_mode;
|
valueKey.values.subwindow_mode = valuePtr->subwindow_mode;
|
} else {
|
} else {
|
valueKey.values.subwindow_mode = ClipByChildren;
|
valueKey.values.subwindow_mode = ClipByChildren;
|
}
|
}
|
if (valueMask & GCGraphicsExposures) {
|
if (valueMask & GCGraphicsExposures) {
|
valueKey.values.graphics_exposures = valuePtr->graphics_exposures;
|
valueKey.values.graphics_exposures = valuePtr->graphics_exposures;
|
} else {
|
} else {
|
valueKey.values.graphics_exposures = True;
|
valueKey.values.graphics_exposures = True;
|
}
|
}
|
if (valueMask & GCClipXOrigin) {
|
if (valueMask & GCClipXOrigin) {
|
valueKey.values.clip_x_origin = valuePtr->clip_x_origin;
|
valueKey.values.clip_x_origin = valuePtr->clip_x_origin;
|
} else {
|
} else {
|
valueKey.values.clip_x_origin = 0;
|
valueKey.values.clip_x_origin = 0;
|
}
|
}
|
if (valueMask & GCClipYOrigin) {
|
if (valueMask & GCClipYOrigin) {
|
valueKey.values.clip_y_origin = valuePtr->clip_y_origin;
|
valueKey.values.clip_y_origin = valuePtr->clip_y_origin;
|
} else {
|
} else {
|
valueKey.values.clip_y_origin = 0;
|
valueKey.values.clip_y_origin = 0;
|
}
|
}
|
if (valueMask & GCClipMask) {
|
if (valueMask & GCClipMask) {
|
valueKey.values.clip_mask = valuePtr->clip_mask;
|
valueKey.values.clip_mask = valuePtr->clip_mask;
|
} else {
|
} else {
|
valueKey.values.clip_mask = None;
|
valueKey.values.clip_mask = None;
|
}
|
}
|
if (valueMask & GCDashOffset) {
|
if (valueMask & GCDashOffset) {
|
valueKey.values.dash_offset = valuePtr->dash_offset;
|
valueKey.values.dash_offset = valuePtr->dash_offset;
|
} else {
|
} else {
|
valueKey.values.dash_offset = 0;
|
valueKey.values.dash_offset = 0;
|
}
|
}
|
if (valueMask & GCDashList) {
|
if (valueMask & GCDashList) {
|
valueKey.values.dashes = valuePtr->dashes;
|
valueKey.values.dashes = valuePtr->dashes;
|
} else {
|
} else {
|
valueKey.values.dashes = 4;
|
valueKey.values.dashes = 4;
|
}
|
}
|
valueKey.display = Tk_Display(tkwin);
|
valueKey.display = Tk_Display(tkwin);
|
valueKey.screenNum = Tk_ScreenNumber(tkwin);
|
valueKey.screenNum = Tk_ScreenNumber(tkwin);
|
valueKey.depth = Tk_Depth(tkwin);
|
valueKey.depth = Tk_Depth(tkwin);
|
|
|
/* CYGNUS LOCAL. Set colors. */
|
/* CYGNUS LOCAL. Set colors. */
|
valueKey.foreground = foreground;
|
valueKey.foreground = foreground;
|
valueKey.background = background;
|
valueKey.background = background;
|
|
|
valueHashPtr = Tcl_CreateHashEntry(&valueTable, (char *) &valueKey, &new);
|
valueHashPtr = Tcl_CreateHashEntry(&valueTable, (char *) &valueKey, &new);
|
if (!new) {
|
if (!new) {
|
gcPtr = (TkGC *) Tcl_GetHashValue(valueHashPtr);
|
gcPtr = (TkGC *) Tcl_GetHashValue(valueHashPtr);
|
gcPtr->refCount++;
|
gcPtr->refCount++;
|
return gcPtr->gc;
|
return gcPtr->gc;
|
}
|
}
|
|
|
/*
|
/*
|
* No GC is currently available for this set of values. Allocate a
|
* No GC is currently available for this set of values. Allocate a
|
* new GC and add a new structure to the database.
|
* new GC and add a new structure to the database.
|
*/
|
*/
|
|
|
gcPtr = (TkGC *) ckalloc(sizeof(TkGC));
|
gcPtr = (TkGC *) ckalloc(sizeof(TkGC));
|
|
|
/*
|
/*
|
* Find or make a drawable to use to specify the screen and depth
|
* Find or make a drawable to use to specify the screen and depth
|
* of the GC. We may have to make a small pixmap, to avoid doing
|
* of the GC. We may have to make a small pixmap, to avoid doing
|
* Tk_MakeWindowExist on the window.
|
* Tk_MakeWindowExist on the window.
|
*/
|
*/
|
|
|
freeDrawable = None;
|
freeDrawable = None;
|
if (Tk_WindowId(tkwin) != None) {
|
if (Tk_WindowId(tkwin) != None) {
|
d = Tk_WindowId(tkwin);
|
d = Tk_WindowId(tkwin);
|
} else if (valueKey.depth ==
|
} else if (valueKey.depth ==
|
DefaultDepth(valueKey.display, valueKey.screenNum)) {
|
DefaultDepth(valueKey.display, valueKey.screenNum)) {
|
d = RootWindow(valueKey.display, valueKey.screenNum);
|
d = RootWindow(valueKey.display, valueKey.screenNum);
|
} else {
|
} else {
|
d = Tk_GetPixmap(valueKey.display,
|
d = Tk_GetPixmap(valueKey.display,
|
RootWindow(valueKey.display, valueKey.screenNum),
|
RootWindow(valueKey.display, valueKey.screenNum),
|
1, 1, valueKey.depth);
|
1, 1, valueKey.depth);
|
freeDrawable = d;
|
freeDrawable = d;
|
}
|
}
|
|
|
gcPtr->gc = XCreateGC(valueKey.display, d, valueMask, &valueKey.values);
|
gcPtr->gc = XCreateGC(valueKey.display, d, valueMask, &valueKey.values);
|
gcPtr->display = valueKey.display;
|
gcPtr->display = valueKey.display;
|
gcPtr->refCount = 1;
|
gcPtr->refCount = 1;
|
gcPtr->valueHashPtr = valueHashPtr;
|
gcPtr->valueHashPtr = valueHashPtr;
|
idKey.display = valueKey.display;
|
idKey.display = valueKey.display;
|
idKey.gc = gcPtr->gc;
|
idKey.gc = gcPtr->gc;
|
idHashPtr = Tcl_CreateHashEntry(&idTable, (char *) &idKey, &new);
|
idHashPtr = Tcl_CreateHashEntry(&idTable, (char *) &idKey, &new);
|
if (!new) {
|
if (!new) {
|
panic("GC already registered in Tk_GetGC");
|
panic("GC already registered in Tk_GetGC");
|
}
|
}
|
Tcl_SetHashValue(valueHashPtr, gcPtr);
|
Tcl_SetHashValue(valueHashPtr, gcPtr);
|
Tcl_SetHashValue(idHashPtr, gcPtr);
|
Tcl_SetHashValue(idHashPtr, gcPtr);
|
if (freeDrawable != None) {
|
if (freeDrawable != None) {
|
Tk_FreePixmap(valueKey.display, freeDrawable);
|
Tk_FreePixmap(valueKey.display, freeDrawable);
|
}
|
}
|
|
|
/* CYGNUS LOCAL. Record and register the colors. */
|
/* CYGNUS LOCAL. Record and register the colors. */
|
gcPtr->foreground = foreground;
|
gcPtr->foreground = foreground;
|
gcPtr->background = background;
|
gcPtr->background = background;
|
if (foreground != NULL) {
|
if (foreground != NULL) {
|
TkRegisterColorGC(foreground, valueKey.display, gcPtr->gc,
|
TkRegisterColorGC(foreground, valueKey.display, gcPtr->gc,
|
GCForeground);
|
GCForeground);
|
}
|
}
|
if (background != NULL) {
|
if (background != NULL) {
|
TkRegisterColorGC(background, valueKey.display, gcPtr->gc,
|
TkRegisterColorGC(background, valueKey.display, gcPtr->gc,
|
GCBackground);
|
GCBackground);
|
}
|
}
|
|
|
return gcPtr->gc;
|
return gcPtr->gc;
|
}
|
}
|
|
|
/* CYGNUS LOCAL. Tk_GetGC now just calls Tk_GetGCColor. */
|
/* CYGNUS LOCAL. Tk_GetGC now just calls Tk_GetGCColor. */
|
|
|
GC
|
GC
|
Tk_GetGC(tkwin, valueMask, valuePtr)
|
Tk_GetGC(tkwin, valueMask, valuePtr)
|
Tk_Window tkwin; /* Window in which GC will be used. */
|
Tk_Window tkwin; /* Window in which GC will be used. */
|
register unsigned long valueMask;
|
register unsigned long valueMask;
|
/* 1 bits correspond to values specified
|
/* 1 bits correspond to values specified
|
* in *valuesPtr; other values are set
|
* in *valuesPtr; other values are set
|
* from defaults. */
|
* from defaults. */
|
register XGCValues *valuePtr;
|
register XGCValues *valuePtr;
|
/* Values are specified here for bits set
|
/* Values are specified here for bits set
|
* in valueMask. */
|
* in valueMask. */
|
{
|
{
|
return Tk_GetGCColor(tkwin, valueMask, valuePtr, NULL, NULL);
|
return Tk_GetGCColor(tkwin, valueMask, valuePtr, NULL, NULL);
|
}
|
}
|
|
|
/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
|
*
|
* Tk_FreeGC --
|
* Tk_FreeGC --
|
*
|
*
|
* This procedure is called to release a graphics context allocated by
|
* This procedure is called to release a graphics context allocated by
|
* Tk_GetGC.
|
* Tk_GetGC.
|
*
|
*
|
* Results:
|
* Results:
|
* None.
|
* None.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* The reference count associated with gc is decremented, and
|
* The reference count associated with gc is decremented, and
|
* gc is officially deallocated if no-one is using it anymore.
|
* gc is officially deallocated if no-one is using it anymore.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
void
|
void
|
Tk_FreeGC(display, gc)
|
Tk_FreeGC(display, gc)
|
Display *display; /* Display for which gc was allocated. */
|
Display *display; /* Display for which gc was allocated. */
|
GC gc; /* Graphics context to be released. */
|
GC gc; /* Graphics context to be released. */
|
{
|
{
|
IdKey idKey;
|
IdKey idKey;
|
Tcl_HashEntry *idHashPtr;
|
Tcl_HashEntry *idHashPtr;
|
register TkGC *gcPtr;
|
register TkGC *gcPtr;
|
|
|
if (!initialized) {
|
if (!initialized) {
|
panic("Tk_FreeGC called before Tk_GetGC");
|
panic("Tk_FreeGC called before Tk_GetGC");
|
}
|
}
|
|
|
idKey.display = display;
|
idKey.display = display;
|
idKey.gc = gc;
|
idKey.gc = gc;
|
idHashPtr = Tcl_FindHashEntry(&idTable, (char *) &idKey);
|
idHashPtr = Tcl_FindHashEntry(&idTable, (char *) &idKey);
|
if (idHashPtr == NULL) {
|
if (idHashPtr == NULL) {
|
panic("Tk_FreeGC received unknown gc argument");
|
panic("Tk_FreeGC received unknown gc argument");
|
}
|
}
|
gcPtr = (TkGC *) Tcl_GetHashValue(idHashPtr);
|
gcPtr = (TkGC *) Tcl_GetHashValue(idHashPtr);
|
gcPtr->refCount--;
|
gcPtr->refCount--;
|
if (gcPtr->refCount == 0) {
|
if (gcPtr->refCount == 0) {
|
/* CYGNUS LOCAL: Deregister the colors. */
|
/* CYGNUS LOCAL: Deregister the colors. */
|
if (gcPtr->foreground != NULL) {
|
if (gcPtr->foreground != NULL) {
|
TkDeregisterColorGC(gcPtr->foreground, gcPtr->gc,
|
TkDeregisterColorGC(gcPtr->foreground, gcPtr->gc,
|
GCForeground);
|
GCForeground);
|
}
|
}
|
if (gcPtr->background != NULL) {
|
if (gcPtr->background != NULL) {
|
TkDeregisterColorGC(gcPtr->background, gcPtr->gc,
|
TkDeregisterColorGC(gcPtr->background, gcPtr->gc,
|
GCBackground);
|
GCBackground);
|
}
|
}
|
|
|
Tk_FreeXId(gcPtr->display, (XID) XGContextFromGC(gcPtr->gc));
|
Tk_FreeXId(gcPtr->display, (XID) XGContextFromGC(gcPtr->gc));
|
XFreeGC(gcPtr->display, gcPtr->gc);
|
XFreeGC(gcPtr->display, gcPtr->gc);
|
Tcl_DeleteHashEntry(gcPtr->valueHashPtr);
|
Tcl_DeleteHashEntry(gcPtr->valueHashPtr);
|
Tcl_DeleteHashEntry(idHashPtr);
|
Tcl_DeleteHashEntry(idHashPtr);
|
ckfree((char *) gcPtr);
|
ckfree((char *) gcPtr);
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
|
*
|
* GCInit --
|
* GCInit --
|
*
|
*
|
* Initialize the structures used for GC management.
|
* Initialize the structures used for GC management.
|
*
|
*
|
* Results:
|
* Results:
|
* None.
|
* None.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* Read the code.
|
* Read the code.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
static void
|
static void
|
GCInit()
|
GCInit()
|
{
|
{
|
initialized = 1;
|
initialized = 1;
|
Tcl_InitHashTable(&valueTable, sizeof(ValueKey)/sizeof(int));
|
Tcl_InitHashTable(&valueTable, sizeof(ValueKey)/sizeof(int));
|
Tcl_InitHashTable(&idTable, sizeof(IdKey)/sizeof(int));
|
Tcl_InitHashTable(&idTable, sizeof(IdKey)/sizeof(int));
|
}
|
}
|
|
|
