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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/themes/browser_theme_provider.h"
#include <gdk-pixbuf/gdk-pixbuf.h>
#include "base/i18n/rtl.h"
#include "base/logging.h"
#include "gfx/gtk_util.h"
#include "third_party/skia/include/core/SkBitmap.h"
GdkPixbuf* BrowserThemeProvider::GetPixbufNamed(int id) const {
return GetPixbufImpl(id, false);
}
GdkPixbuf* BrowserThemeProvider::GetRTLEnabledPixbufNamed(int id) const {
return GetPixbufImpl(id, true);
}
GdkPixbuf* BrowserThemeProvider::GetPixbufImpl(int id, bool rtl_enabled) const {
DCHECK(CalledOnValidThread());
// Use the negative |resource_id| for the key for BIDI-aware images.
int key = rtl_enabled ? -id : id;
// Check to see if we already have the pixbuf in the cache.
GdkPixbufMap::const_iterator pixbufs_iter = gdk_pixbufs_.find(key);
if (pixbufs_iter != gdk_pixbufs_.end())
return pixbufs_iter->second;
SkBitmap* bitmap = GetBitmapNamed(id);
GdkPixbuf* pixbuf = gfx::GdkPixbufFromSkBitmap(bitmap);
// We loaded successfully. Cache the pixbuf.
if (pixbuf) {
if (base::i18n::IsRTL() && rtl_enabled) {
GdkPixbuf* original_pixbuf = pixbuf;
pixbuf = gdk_pixbuf_flip(pixbuf, TRUE);
g_object_unref(original_pixbuf);
}
gdk_pixbufs_[key] = pixbuf;
return pixbuf;
}
// We failed to retrieve the bitmap, show a debugging red square.
LOG(WARNING) << "Unable to load GdkPixbuf with id " << id;
NOTREACHED(); // Want to assert in debug mode.
static GdkPixbuf* empty_bitmap = NULL;
if (!empty_bitmap) {
// The placeholder bitmap is bright red so people notice the problem.
// This bitmap will be leaked, but this code should never be hit.
scoped_ptr<SkBitmap> skia_bitmap(new SkBitmap());
skia_bitmap->setConfig(SkBitmap::kARGB_8888_Config, 32, 32);
skia_bitmap->allocPixels();
skia_bitmap->eraseARGB(255, 255, 0, 0);
empty_bitmap = gfx::GdkPixbufFromSkBitmap(skia_bitmap.get());
}
return empty_bitmap;
}
void BrowserThemeProvider::FreePlatformCaches() {
DCHECK(CalledOnValidThread());
// Free GdkPixbufs.
for (GdkPixbufMap::iterator i = gdk_pixbufs_.begin();
i != gdk_pixbufs_.end(); i++) {
g_object_unref(i->second);
}
gdk_pixbufs_.clear();
}
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