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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_LAYERS_UI_RESOURCE_LAYER_H_
#define CC_LAYERS_UI_RESOURCE_LAYER_H_
#include <memory>
#include "cc/cc_export.h"
#include "cc/layers/layer.h"
#include "cc/resources/ui_resource_client.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/geometry/rect.h"
namespace cc {
class LayerTreeHost;
class CC_EXPORT UIResourceLayer : public Layer {
public:
static scoped_refptr<UIResourceLayer> Create();
UIResourceLayer(const UIResourceLayer&) = delete;
UIResourceLayer& operator=(const UIResourceLayer&) = delete;
void SetLayerTreeHost(LayerTreeHost* host) override;
// Sets the resource. If they don't exist already, the shared UI resource and
// ID are generated and cached in a map in the associated UIResourceManager.
// This resource will be released when all references of SkPixelRefs outside
// the associated UIResourceManager's map are dropped
void SetBitmap(const SkBitmap& skbitmap);
// An alternative way of setting the resource where an ID is used directly. If
// you use this method, you are responsible for updating the ID if the layer
// moves between compositors.
void SetUIResourceId(UIResourceId resource_id);
// Sets a UV transform to be used at draw time. Defaults to (0, 0) and (1, 1).
void SetUV(const gfx::PointF& top_left, const gfx::PointF& bottom_right);
protected:
UIResourceLayer();
~UIResourceLayer() override;
void PushDirtyPropertiesTo(
LayerImpl* layer,
uint8_t dirty_flag,
const CommitState& commit_state,
const ThreadUnsafeCommitState& unsafe_state) override;
bool HasDrawableContent() const override;
UIResourceId resource_id() const { return resource_id_.Read(*this); }
private:
std::unique_ptr<LayerImpl> CreateLayerImpl(
LayerTreeImpl* tree_impl) const override;
void RecreateUIResourceIdFromBitmap();
void SetUIResourceIdInternal(UIResourceId resource_id);
// The resource ID will be zero when it's unset or when there's no associated
// LayerTreeHost.
ProtectedSequenceReadable<UIResourceId> resource_id_;
ProtectedSequenceForbidden<SkBitmap> bitmap_;
ProtectedSequenceReadable<gfx::PointF> uv_top_left_;
ProtectedSequenceReadable<gfx::PointF> uv_bottom_right_;
};
} // namespace cc
#endif // CC_LAYERS_UI_RESOURCE_LAYER_H_
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