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// 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 CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_
#define CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_
#include <vector>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "cc/input/layer_scroll_offset_delegate.h"
#include "content/browser/android/in_process/synchronous_compositor_output_surface.h"
#include "content/common/input/input_event_ack_state.h"
#include "content/public/browser/android/synchronous_compositor.h"
#include "content/public/browser/web_contents_user_data.h"
#include "ipc/ipc_message.h"
namespace cc {
class InputHandler;
}
namespace blink {
class WebInputEvent;
}
namespace content {
class InputHandlerManager;
struct DidOverscrollParams;
// The purpose of this class is to act as the intermediary between the various
// components that make up the 'synchronous compositor mode' implementation and
// expose their functionality via the SynchronousCompositor interface.
// This class is created on the main thread but most of the APIs are called
// from the Compositor thread.
class SynchronousCompositorImpl
: public cc::LayerScrollOffsetDelegate,
public SynchronousCompositor,
public SynchronousCompositorOutputSurfaceDelegate,
public WebContentsUserData<SynchronousCompositorImpl> {
public:
// When used from browser code, use both |process_id| and |routing_id|.
static SynchronousCompositorImpl* FromID(int process_id, int routing_id);
// When handling upcalls from renderer code, use this version; the process id
// is implicitly that of the in-process renderer.
static SynchronousCompositorImpl* FromRoutingID(int routing_id);
InputEventAckState HandleInputEvent(const blink::WebInputEvent& input_event);
// SynchronousCompositor
virtual void SetClient(SynchronousCompositorClient* compositor_client)
override;
virtual bool InitializeHwDraw() override;
virtual void ReleaseHwDraw() override;
virtual scoped_ptr<cc::CompositorFrame> DemandDrawHw(
gfx::Size surface_size,
const gfx::Transform& transform,
gfx::Rect viewport,
gfx::Rect clip,
gfx::Rect viewport_rect_for_tile_priority,
const gfx::Transform& transform_for_tile_priority) override;
virtual bool DemandDrawSw(SkCanvas* canvas) override;
virtual void ReturnResources(
const cc::CompositorFrameAck& frame_ack) override;
virtual void SetMemoryPolicy(size_t bytes_limit) override;
virtual void DidChangeRootLayerScrollOffset() override;
// SynchronousCompositorOutputSurfaceDelegate
virtual void DidBindOutputSurface(
SynchronousCompositorOutputSurface* output_surface) override;
virtual void DidDestroySynchronousOutputSurface(
SynchronousCompositorOutputSurface* output_surface) override;
virtual void SetContinuousInvalidate(bool enable) override;
virtual void DidActivatePendingTree() override;
// LayerScrollOffsetDelegate
virtual gfx::ScrollOffset GetTotalScrollOffset() override;
virtual void UpdateRootLayerState(
const gfx::ScrollOffset& total_scroll_offset,
const gfx::ScrollOffset& max_scroll_offset,
const gfx::SizeF& scrollable_size,
float page_scale_factor,
float min_page_scale_factor,
float max_page_scale_factor) override;
virtual bool IsExternalFlingActive() const override;
void SetInputHandler(cc::InputHandler* input_handler);
void DidOverscroll(const DidOverscrollParams& params);
void DidStopFlinging();
private:
explicit SynchronousCompositorImpl(WebContents* contents);
virtual ~SynchronousCompositorImpl();
friend class WebContentsUserData<SynchronousCompositorImpl>;
void UpdateFrameMetaData(const cc::CompositorFrameMetadata& frame_info);
void DeliverMessages();
bool CalledOnValidThread() const;
SynchronousCompositorClient* compositor_client_;
SynchronousCompositorOutputSurface* output_surface_;
WebContents* contents_;
cc::InputHandler* input_handler_;
base::WeakPtrFactory<SynchronousCompositorImpl> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorImpl);
};
} // namespace content
#endif // CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_
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