cc/trees/layer_tree_host_single_thread_client.h

// Copyright 2013 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_TREES_LAYER_TREE_HOST_SINGLE_THREAD_CLIENT_H_
#define CC_TREES_LAYER_TREE_HOST_SINGLE_THREAD_CLIENT_H_

namespace cc {

class LayerTreeHostSingleThreadClient {
 public:
  // Request that the client schedule a composite.
  virtual void RequestScheduleComposite() {}
  // Request that the client schedule a composite now, and calculate appropriate
  // delay for potential future frame.
  virtual void RequestScheduleAnimation() {}

  // Called whenever the compositor posts a SwapBuffers (either full or
  // partial). After DidPostSwapBuffers(), exactly one of
  // DidCompleteSwapBuffers() or DidAbortSwapBuffers() will be called, thus
  // these functions can be used to keep track of pending swap buffers calls for
  // rate limiting.
  virtual void DidPostSwapBuffers() = 0;
  virtual void DidCompleteSwapBuffers() = 0;
  virtual void DidAbortSwapBuffers() = 0;

 protected:
  virtual ~LayerTreeHostSingleThreadClient() {}
};

}  // namespace cc

#endif  // CC_TREES_LAYER_TREE_HOST_SINGLE_THREAD_CLIENT_H_