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// Copyright 2011 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_PROXY_H_
#define CC_TREES_PROXY_H_
#include <memory>
#include <string>
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "base/threading/platform_thread.h"
#include "base/time/time.h"
#include "base/values.h"
#include "cc/cc_export.h"
#include "cc/input/browser_controls_state.h"
#include "cc/trees/task_runner_provider.h"
#include "components/viz/common/frame_sinks/begin_frame_source.h"
#include "services/metrics/public/cpp/ukm_source_id.h"
#include "url/gurl.h"
namespace gfx {
class Rect;
}
namespace cc {
class LayerTreeFrameSink;
class LayerTreeMutator;
class RenderFrameMetadataObserver;
// Abstract interface responsible for proxying commands from the main-thread
// side of the compositor over to the compositor implementation.
class CC_EXPORT Proxy {
public:
virtual ~Proxy() {}
virtual bool IsStarted() const = 0;
virtual bool CommitToActiveTree() const = 0;
virtual void SetLayerTreeFrameSink(
LayerTreeFrameSink* layer_tree_frame_sink) = 0;
virtual void ReleaseLayerTreeFrameSink() = 0;
virtual void SetVisible(bool visible) = 0;
virtual void SetNeedsAnimate() = 0;
virtual void SetNeedsUpdateLayers() = 0;
virtual void SetNeedsCommit() = 0;
virtual void SetNeedsRedraw(const gfx::Rect& damage_rect) = 0;
virtual void SetNextCommitWaitsForActivation() = 0;
// Returns true if an animate or commit has been requested, and hasn't
// completed yet.
virtual bool RequestedAnimatePending() = 0;
virtual void NotifyInputThrottledUntilCommit() = 0;
// Defers commits until it is reset. It is only supported when using a
// scheduler.
virtual void SetDeferCommits(bool defer_commits) = 0;
virtual bool CommitRequested() const = 0;
// Must be called before using the proxy.
virtual void Start() = 0;
// Must be called before deleting the proxy.
virtual void Stop() = 0;
virtual void SetMutator(std::unique_ptr<LayerTreeMutator> mutator) = 0;
virtual bool SupportsImplScrolling() const = 0;
virtual void UpdateBrowserControlsState(BrowserControlsState constraints,
BrowserControlsState current,
bool animate) = 0;
virtual void RequestBeginMainFrameNotExpected(bool new_state) = 0;
// Testing hooks
virtual bool MainFrameWillHappenForTesting() = 0;
virtual void SetURLForUkm(const GURL& url) = 0;
virtual void ClearHistory() = 0;
virtual void SetRenderFrameObserver(
std::unique_ptr<RenderFrameMetadataObserver> observer) = 0;
};
} // namespace cc
#endif // CC_TREES_PROXY_H_
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