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// Copyright (c) 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 UI_COMPOSITOR_LAYER_DELEGATE_H_
#define UI_COMPOSITOR_LAYER_DELEGATE_H_
#pragma once
#include "ui/compositor/compositor_export.h"
namespace gfx {
class Canvas;
}
namespace ui {
// A delegate interface implemented by an object that renders to a Layer.
class COMPOSITOR_EXPORT LayerDelegate {
public:
// Paint content for the layer to the specified canvas. It has already been
// clipped to the Layer's invalid rect.
virtual void OnPaintLayer(gfx::Canvas* canvas) = 0;
protected:
virtual ~LayerDelegate() {}
};
} // namespace ui
#endif // UI_COMPOSITOR_LAYER_DELEGATE_H_
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