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// Copyright 2014 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 CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_THUMBNAIL_LAYER_H_
#define CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_THUMBNAIL_LAYER_H_
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "cc/layers/ui_resource_layer.h"
#include "cc/resources/ui_resource_client.h"
#include "chrome/browser/android/compositor/layer/layer.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size_f.h"
class Thumbnail;
namespace cc {
class Layer;
}
namespace chrome {
namespace android {
// A layer to render a thumbnail.
class ThumbnailLayer : public Layer {
public:
// Creates a ThumbnailLayer.
static scoped_refptr<ThumbnailLayer> Create();
// Sets thumbnail that will be shown. |thumbnail| should not be nullptr.
void SetThumbnail(Thumbnail* thumbnail);
// Clip the thumbnail to the given |clipping|.
void Clip(const gfx::Rect& clipping);
// Add self to |parent| or replace self at |index| if there already is an
// instance with the same ID at |index|.
void AddSelfToParentOrReplaceAt(scoped_refptr<cc::Layer> parent,
size_t index);
// Implements Layer.
scoped_refptr<cc::Layer> layer() override;
protected:
ThumbnailLayer();
~ThumbnailLayer() override;
private:
void UpdateSizes(const gfx::SizeF& content_size,
const gfx::SizeF& resource_size);
scoped_refptr<cc::UIResourceLayer> layer_;
gfx::SizeF content_size_;
gfx::Rect last_clipping_;
gfx::SizeF resource_size_;
DISALLOW_COPY_AND_ASSIGN(ThumbnailLayer);
};
} // namespace android
} // namespace chrome
#endif // CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_THUMBNAIL_LAYER_H_
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