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// Copyright 2015 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_CHANNEL_MAIN_H_
#define CC_TREES_CHANNEL_MAIN_H_
#include "cc/base/cc_export.h"
#include "cc/base/completion_event.h"
#include "cc/input/top_controls_state.h"
#include "cc/output/output_surface.h"
#include "cc/scheduler/begin_frame_source.h"
#include "cc/scheduler/commit_earlyout_reason.h"
#include "cc/trees/proxy_common.h"
namespace cc {
// ChannelMain and ChannelImpl provide an abstract communication layer for
// the main and impl side of the compositor.
//
// The communication sequence between the 2 sides is:
//
// LayerTreeHost<-->ProxyMain<-->ChannelMain
// |
// |
// ChannelImpl<-->ProxyImpl<-->LayerTreeHostImpl
class CC_EXPORT ChannelMain {
public:
virtual ~ChannelMain() {}
// Interface for commands sent to ProxyImpl
virtual void UpdateTopControlsStateOnImpl(TopControlsState constraints,
TopControlsState current,
bool animate) = 0;
virtual void InitializeOutputSurfaceOnImpl(OutputSurface* output_surface) = 0;
virtual void MainThreadHasStoppedFlingingOnImpl() = 0;
virtual void SetInputThrottledUntilCommitOnImpl(bool is_throttled) = 0;
virtual void SetDeferCommitsOnImpl(bool defer_commits) = 0;
virtual void FinishAllRenderingOnImpl(CompletionEvent* completion) = 0;
virtual void SetVisibleOnImpl(bool visible) = 0;
virtual void ReleaseOutputSurfaceOnImpl(CompletionEvent* completion) = 0;
virtual void MainFrameWillHappenOnImplForTesting(
CompletionEvent* completion,
bool* main_frame_will_happen) = 0;
virtual void SetNeedsRedrawOnImpl(const gfx::Rect& damage_rect) = 0;
virtual void SetNeedsCommitOnImpl() = 0;
virtual void BeginMainFrameAbortedOnImpl(
CommitEarlyOutReason reason,
base::TimeTicks main_thread_start_time) = 0;
virtual void StartCommitOnImpl(CompletionEvent* completion,
LayerTreeHost* layer_tree_host,
base::TimeTicks main_thread_start_time,
bool hold_commit_for_activation) = 0;
// Must be called before using the channel.
virtual void SynchronouslyInitializeImpl(
LayerTreeHost* layer_tree_host,
scoped_ptr<BeginFrameSource> external_begin_frame_source) = 0;
// Must be called before deleting the channel.
virtual void SynchronouslyCloseImpl() = 0;
};
} // namespace cc
#endif // CC_TREES_CHANNEL_MAIN_H_
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