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// Copyright 2012 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.
#ifndef CC_LAYERS_NINE_PATCH_LAYER_H_
#define CC_LAYERS_NINE_PATCH_LAYER_H_
#include "base/memory/scoped_ptr.h"
#include "cc/base/cc_export.h"
#include "cc/layers/layer.h"
#include "cc/resources/image_layer_updater.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/rect.h"
namespace cc {
class ResourceUpdateQueue;
class CC_EXPORT NinePatchLayer : public Layer {
public:
static scoped_refptr<NinePatchLayer> Create();
virtual bool DrawsContent() const OVERRIDE;
virtual void SetTexturePriorities(const PriorityCalculator& priority_calc)
OVERRIDE;
virtual bool Update(ResourceUpdateQueue* queue,
const OcclusionTracker* occlusion) OVERRIDE;
virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
// aperture is in the pixel space of the bitmap resource and refers to
// the center patch of the ninepatch (which is unused in this
// implementation). We split off eight rects surrounding it and stick them
// on the edges of the layer. The corners are unscaled, the top and bottom
// rects are x-stretched to fit, and the left and right rects are
// y-stretched to fit.
void SetBitmap(const SkBitmap& bitmap, gfx::Rect aperture);
private:
NinePatchLayer();
virtual ~NinePatchLayer();
virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
OVERRIDE;
void CreateUpdaterIfNeeded();
void CreateResource();
scoped_refptr<ImageLayerUpdater> updater_;
scoped_ptr<LayerUpdater::Resource> resource_;
SkBitmap bitmap_;
bool bitmap_dirty_;
// The transparent center region that shows the parent layer's contents in
// image space.
gfx::Rect image_aperture_;
DISALLOW_COPY_AND_ASSIGN(NinePatchLayer);
};
} // namespace cc
#endif // CC_LAYERS_NINE_PATCH_LAYER_H_
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