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/*
* cache.c --
* Tile theme engine, resource cache.
*
* Copyright (c) 2004, Joe English
*
* $Id: cache.c,v 1.2 2004/02/12 22:41:33 jenglish Exp $
* $Id: cache.c,v 1.3 2004/02/12 22:52:46 jenglish Exp $
*
* The problem:
*
* Tk maintains reference counts for fonts, colors, and images,
* and deallocates them when the reference count goes to zero.
* With the theme engine, resources are allocated right before
* drawing an element and released immediately after.
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/*
* Free fonts:
*/
entryPtr = Tcl_FirstHashEntry(&cache->fontTable, &search);
while (entryPtr != NULL) {
Tcl_Obj *fontObj = (Tcl_Obj*)Tcl_GetHashValue(entryPtr);
if (fontObj) {
Tk_FreeFontFromObj(cache->tkwin, fontObj);
Tcl_DecrRefCount(fontObj);
Tk_FreeFontFromObj(cache->tkwin, fontObj);
Tcl_DecrRefCount(fontObj);
}
entryPtr = Tcl_NextHashEntry(&search);
}
Tcl_DeleteHashTable(&cache->fontTable);
Tcl_InitHashTable(&cache->fontTable, TCL_STRING_KEYS);
/*
* Free colors:
*/
entryPtr = Tcl_FirstHashEntry(&cache->colorTable, &search);
while (entryPtr != NULL) {
Tcl_Obj *colorObj = (Tcl_Obj*)Tcl_GetHashValue(entryPtr);
if (colorObj) {
Tk_FreeColorFromObj(cache->tkwin, colorObj);
Tcl_DecrRefCount(colorObj);
Tk_FreeColorFromObj(cache->tkwin, colorObj);
Tcl_DecrRefCount(colorObj);
}
entryPtr = Tcl_NextHashEntry(&search);
}
Tcl_DeleteHashTable(&cache->colorTable);
Tcl_InitHashTable(&cache->colorTable, TCL_STRING_KEYS);
/*
* Free borders:
*/
entryPtr = Tcl_FirstHashEntry(&cache->borderTable, &search);
while (entryPtr != NULL) {
Tcl_Obj *borderObj = (Tcl_Obj*)Tcl_GetHashValue(entryPtr);
if (borderObj) {
Tk_Free3DBorderFromObj(cache->tkwin, borderObj);
Tcl_DecrRefCount(borderObj);
Tk_Free3DBorderFromObj(cache->tkwin, borderObj);
Tcl_DecrRefCount(borderObj);
}
entryPtr = Tcl_NextHashEntry(&search);
}
Tcl_DeleteHashTable(&cache->borderTable);
Tcl_InitHashTable(&cache->borderTable, TCL_STRING_KEYS);
/*
* Free images:
*/
entryPtr = Tcl_FirstHashEntry(&cache->imageTable, &search);
while (entryPtr != NULL) {
Tk_Image image = (Tk_Image)Tcl_GetHashValue(entryPtr);
if (image) {
Tk_FreeImage(image);
Tk_FreeImage(image);
}
entryPtr = Tcl_NextHashEntry(&search);
}
Tcl_DeleteHashTable(&cache->imageTable);
Tcl_InitHashTable(&cache->imageTable, TCL_STRING_KEYS);
return;
}
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