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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_LAYER_TREE_HOST_CLIENT_H_
#define CC_LAYER_TREE_HOST_CLIENT_H_
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
namespace gfx {
class Vector2d;
}
namespace cc {
class ContextProvider;
class InputHandler;
class OutputSurface;
class LayerTreeHostClient {
public:
virtual void willBeginFrame() = 0;
// Marks finishing compositing-related tasks on the main thread. In threaded mode, this corresponds to didCommit().
virtual void didBeginFrame() = 0;
virtual void animate(double frameBeginTime) = 0;
virtual void layout() = 0;
virtual void applyScrollAndScale(gfx::Vector2d scrollDelta, float pageScale) = 0;
virtual scoped_ptr<OutputSurface> createOutputSurface() = 0;
virtual void didRecreateOutputSurface(bool success) = 0;
virtual scoped_ptr<InputHandler> createInputHandler() = 0;
virtual void willCommit() = 0;
virtual void didCommit() = 0;
virtual void didCommitAndDrawFrame() = 0;
virtual void didCompleteSwapBuffers() = 0;
// Used only in the single-threaded path.
virtual void scheduleComposite() = 0;
// These must always return a valid ContextProvider. But the provider does not need to be capable of creating contexts.
virtual scoped_refptr<cc::ContextProvider> OffscreenContextProviderForMainThread() = 0;
virtual scoped_refptr<cc::ContextProvider> OffscreenContextProviderForCompositorThread() = 0;
// This hook is for testing.
virtual void willRetryRecreateOutputSurface() {}
protected:
virtual ~LayerTreeHostClient() { }
};
}
#endif // CC_LAYER_TREE_HOST_CLIENT_H_
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