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// Copyright 2014 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 ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_
#define ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_
#include "android_webview/browser/gl_view_renderer_manager.h"
#include "android_webview/browser/parent_compositor_draw_constraints.h"
#include "base/cancelable_callback.h"
#include "base/memory/weak_ptr.h"
#include "base/single_thread_task_runner.h"
#include "base/synchronization/lock.h"
#include "cc/output/compositor_frame_ack.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/vector2d.h"
struct AwDrawGLInfo;
namespace android_webview {
namespace internal {
class RequestDrawGLTracker;
}
class BrowserViewRenderer;
class ChildFrame;
class HardwareRenderer;
class InsideHardwareReleaseReset;
// This class is used to pass data between UI thread and RenderThread.
class SharedRendererState {
public:
SharedRendererState(
const scoped_refptr<base::SingleThreadTaskRunner>& ui_loop,
BrowserViewRenderer* browser_view_renderer);
~SharedRendererState();
// This function can be called from any thread.
void ClientRequestDrawGL();
// UI thread methods.
void SetScrollOffsetOnUI(gfx::Vector2d scroll_offset);
void SetCompositorFrameOnUI(scoped_ptr<ChildFrame> frame);
void InitializeHardwareDrawIfNeededOnUI();
void ReleaseHardwareDrawIfNeededOnUI();
ParentCompositorDrawConstraints GetParentDrawConstraintsOnUI() const;
void SwapReturnedResourcesOnUI(cc::ReturnedResourceArray* resources);
bool ReturnedResourcesEmptyOnUI() const;
scoped_ptr<ChildFrame> PassUncommittedFrameOnUI();
void DeleteHardwareRendererOnUI();
// RT thread methods.
gfx::Vector2d GetScrollOffsetOnRT();
scoped_ptr<ChildFrame> PassCompositorFrameOnRT();
void DrawGL(AwDrawGLInfo* draw_info);
void PostExternalDrawConstraintsToChildCompositorOnRT(
const ParentCompositorDrawConstraints& parent_draw_constraints);
void InsertReturnedResourcesOnRT(const cc::ReturnedResourceArray& resources);
private:
friend class internal::RequestDrawGLTracker;
class InsideHardwareReleaseReset {
public:
explicit InsideHardwareReleaseReset(
SharedRendererState* shared_renderer_state);
~InsideHardwareReleaseReset();
private:
SharedRendererState* shared_renderer_state_;
};
// RT thread method.
void DidDrawGLProcess();
// UI thread methods.
void ResetRequestDrawGLCallback();
void ClientRequestDrawGLOnUI();
void UpdateParentDrawConstraintsOnUI();
bool IsInsideHardwareRelease() const;
void SetInsideHardwareRelease(bool inside);
void ReleaseCompositorResourcesIfNeededOnUI(bool release_hardware_draw);
// Accessed by UI thread.
scoped_refptr<base::SingleThreadTaskRunner> ui_loop_;
BrowserViewRenderer* browser_view_renderer_;
base::WeakPtr<SharedRendererState> ui_thread_weak_ptr_;
base::CancelableClosure request_draw_gl_cancelable_closure_;
// Accessed by RT thread.
scoped_ptr<HardwareRenderer> hardware_renderer_;
// This is accessed by both UI and RT now. TODO(hush): move to RT only.
GLViewRendererManager::Key renderer_manager_key_;
// Accessed by both UI and RT thread.
mutable base::Lock lock_;
gfx::Vector2d scroll_offset_;
scoped_ptr<ChildFrame> child_frame_;
bool inside_hardware_release_;
ParentCompositorDrawConstraints parent_draw_constraints_;
cc::ReturnedResourceArray returned_resources_;
base::Closure request_draw_gl_closure_;
base::WeakPtrFactory<SharedRendererState> weak_factory_on_ui_thread_;
DISALLOW_COPY_AND_ASSIGN(SharedRendererState);
};
} // namespace android_webview
#endif // ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_
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