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// Copyright (c) 2011 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 "ui/gfx/gfx_module.h"
#include <map>
#include "base/logging.h"
#include "base/scoped_ptr.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/codec/png_codec.h"
namespace gfx {
static GfxModule::ResourceProvider resource_provider = NULL;
// static
void GfxModule::SetResourceProvider(ResourceProvider func) {
resource_provider = func;
}
// static
base::StringPiece GfxModule::GetResource(int key) {
return resource_provider ? resource_provider(key) : base::StringPiece();
}
// TODO(xiyuan): Use ResourceBundle to have shared cache when it is in ui_base.
// static
SkBitmap* GfxModule::GetBitmapNamed(int key) {
typedef std::map<int, SkBitmap*> SkImageMap;
static SkImageMap images; // Image resource cache.
SkImageMap::const_iterator found = images.find(key);
if (found != images.end())
return found->second;
base::StringPiece data = GetResource(key);
if (!data.size()) {
NOTREACHED() << "Unable to load image resource " << key;
return NULL;
}
scoped_ptr<SkBitmap> bitmap(new SkBitmap);
if (!gfx::PNGCodec::Decode(
reinterpret_cast<const unsigned char*>(data.data()),
data.size(), bitmap.get())) {
NOTREACHED() << "Unable to decode image resource " << key;
return NULL;
}
images[key] = bitmap.get();
return bitmap.release();
}
} // namespace gfx
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