blob: 74dcbc0cff24631873737c4cdc42341e1051f4ed [file] [log] [blame]
// 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.
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/time/time.h"
namespace gfx {
class Vector2d;
namespace cc {
class ContextProvider;
class InputHandlerClient;
class OutputSurface;
class LayerTreeHostClient {
virtual void WillBeginMainFrame(int frame_id) = 0;
// Marks finishing compositing-related tasks on the main thread. In threaded
// mode, this corresponds to DidCommit().
virtual void DidBeginMainFrame() = 0;
virtual void Animate(base::TimeTicks frame_begin_time) = 0;
virtual void Layout() = 0;
virtual void ApplyScrollAndScale(const gfx::Vector2d& scroll_delta,
float page_scale) = 0;
// Creates an OutputSurface. If fallback is true, it should attempt to
// create an OutputSurface that is guaranteed to initialize correctly.
virtual scoped_ptr<OutputSurface> CreateOutputSurface(bool fallback) = 0;
virtual void DidInitializeOutputSurface() = 0;
virtual void WillCommit() = 0;
virtual void DidCommit() = 0;
virtual void DidCommitAndDrawFrame() = 0;
virtual void DidCompleteSwapBuffers() = 0;
// Requests that the client insert a rate limiting token in the shared main
// thread context's command stream that will block if the context gets too far
// ahead of the compositor's command stream. Only needed if the tree contains
// a TextureLayer that calls SetRateLimitContext(true).
virtual void RateLimitSharedMainThreadContext() {}
// This hook is for testing.
virtual void DidFailToInitializeOutputSurface() {}
virtual ~LayerTreeHostClient() {}
} // namespace cc