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pixbuf engine: remove only use of GCache in Gtk

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We'll be deprecating GCache in GLib soon.
This commit is contained in:
Ryan Lortie 2010-11-08 16:20:19 -05:00 committed by Tristan Van Berkom
parent 8eb7181979
commit 3f2281f8c6
1 changed files with 45 additions and 22 deletions
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67
modules/engines/pixbuf/pixbuf-render.c
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@ -25,7 +25,7 @@
#include "pixbuf.h" #include "pixbuf.h"
#include <gdk-pixbuf/gdk-pixbuf.h> #include <gdk-pixbuf/gdk-pixbuf.h>
static GCache *pixbuf_cache = NULL; static GHashTable *pixbuf_cache = NULL;
static GdkPixbuf * static GdkPixbuf *
bilinear_gradient (GdkPixbuf *src, bilinear_gradient (GdkPixbuf *src,
@ -504,7 +504,7 @@ theme_pixbuf_set_filename (ThemePixbuf *theme_pb,
{ {
if (theme_pb->pixbuf) if (theme_pb->pixbuf)
{ {
g_cache_remove (pixbuf_cache, theme_pb->pixbuf); g_object_unref (theme_pb->pixbuf);
theme_pb->pixbuf = NULL; theme_pb->pixbuf = NULL;
} }
@ -678,20 +678,11 @@ theme_pixbuf_set_stretch (ThemePixbuf *theme_pb,
theme_pixbuf_compute_hints (theme_pb); theme_pixbuf_compute_hints (theme_pb);
} }
static GdkPixbuf * void
pixbuf_cache_value_new (gchar *filename) theme_pixbuf_uncache (gpointer data,
GObject *where_the_object_was)
{ {
GError *err = NULL; g_hash_table_remove (pixbuf_cache, data);
GdkPixbuf *result = gdk_pixbuf_new_from_file (filename, &err);
if (!result)
{
g_warning ("Pixbuf theme: Cannot load pixmap file %s: %s\n",
filename, err->message);
g_error_free (err);
}
return result;
} }
GdkPixbuf * GdkPixbuf *
@ -699,14 +690,46 @@ theme_pixbuf_get_pixbuf (ThemePixbuf *theme_pb)
{ {
if (!theme_pb->pixbuf) if (!theme_pb->pixbuf)
{ {
gpointer pixbuf;
if (!pixbuf_cache) if (!pixbuf_cache)
pixbuf_cache = g_cache_new ((GCacheNewFunc)pixbuf_cache_value_new, /* Hash table does not hold its own reference to the GdkPixbuf */
(GCacheDestroyFunc)g_object_unref, pixbuf_cache = g_hash_table_new_full (g_str_hash, g_str_equal,
(GCacheDupFunc)g_strdup, g_free, NULL);
(GCacheDestroyFunc)g_free,
g_str_hash, g_direct_hash, g_str_equal); /* Do an extended lookup because we store NULL in the hash table
* (below) to indicate that we failed to load the given filename.
theme_pb->pixbuf = g_cache_insert (pixbuf_cache, theme_pb->filename); */
if (!g_hash_table_lookup_extended (pixbuf_cache, theme_pb->filename,
NULL, &pixbuf))
/* Not in the cache. Add it and take the first ref. */
{
gchar *key = g_strdup (theme_pb->filename);
GError *error = NULL;
pixbuf = gdk_pixbuf_new_from_file (key, &error);
if (pixbuf != NULL)
{
/* Drop the pixbuf from the cache when we lose the last ref. */
g_object_weak_ref (G_OBJECT (pixbuf), theme_pixbuf_uncache, key);
}
else
{
/* Never drop a negative from the cache. */
g_warning ("Pixbuf theme: Cannot load pixmap file %s: %s\n",
theme_pb->filename, error->message);
g_error_free (error);
}
/* Always insert, even if we failed to create the pixbuf. */
g_hash_table_insert (pixbuf_cache, key, pixbuf);
theme_pb->pixbuf = pixbuf;
}
else
/* In the cache. Take an additional ref. */
theme_pb->pixbuf = g_object_ref (pixbuf);
if (theme_pb->stretch) if (theme_pb->stretch)
theme_pixbuf_compute_hints (theme_pb); theme_pixbuf_compute_hints (theme_pb);