Make RenderWidget responsible for the composited view's lifetime

webkit/compositor_bindings/web_layer_tree_view_impl.h

 // 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 WebLayerTreeViewImpl_h
-#define WebLayerTreeViewImpl_h
+#ifndef WEBKIT_COMPOSITOR_BINDINGS_WEB_LAYER_TREE_VIEW_IMPL_H_
+#define WEBKIT_COMPOSITOR_BINDINGS_WEB_LAYER_TREE_VIEW_IMPL_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/layer_tree_host_client.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebLayerTreeView.h"
 #include "webkit/compositor_bindings/webkit_compositor_bindings_export.h"
 
 namespace cc {
 class FontAtlas;
 class LayerTreeHost;
 class Thread;
 }
 
 namespace WebKit {
 class WebLayer;
 class WebLayerTreeViewClient;
 class WebLayerTreeViewClientAdapter;
 
-class WebLayerTreeViewImpl : public WebLayerTreeView, public cc::LayerTreeHostClient {
-public:
-    WEBKIT_COMPOSITOR_BINDINGS_EXPORT explicit WebLayerTreeViewImpl(
-        WebLayerTreeViewClient*);
-    virtual ~WebLayerTreeViewImpl();
+class WebLayerTreeViewImpl : public WebLayerTreeView,
+                             public cc::LayerTreeHostClient {
+ public:
+  WEBKIT_COMPOSITOR_BINDINGS_EXPORT explicit WebLayerTreeViewImpl(
+      WebLayerTreeViewClient* client);
+  virtual ~WebLayerTreeViewImpl();
 
-    WEBKIT_COMPOSITOR_BINDINGS_EXPORT bool initialize(
-        const Settings&, scoped_ptr<cc::Thread> implThread);
+  WEBKIT_COMPOSITOR_BINDINGS_EXPORT bool initialize(
+      const Settings& settings, scoped_ptr<cc::Thread> impl_thread);
 
-    // WebLayerTreeView implementation.
-    virtual void setSurfaceReady() OVERRIDE;
-    virtual void setRootLayer(const WebLayer&) OVERRIDE;
-    virtual void clearRootLayer() OVERRIDE;
-    virtual void setViewportSize(const WebSize& layoutViewportSize, const WebSize& deviceViewportSize = WebSize()) OVERRIDE;
-    virtual WebSize layoutViewportSize() const OVERRIDE;
-    virtual WebSize deviceViewportSize() const OVERRIDE;
-    virtual WebFloatPoint adjustEventPointForPinchZoom(const WebFloatPoint& point) const OVERRIDE;
-    virtual void setDeviceScaleFactor(float) OVERRIDE;
-    virtual float deviceScaleFactor() const OVERRIDE;
-    virtual void setBackgroundColor(WebColor) OVERRIDE;
-    virtual void setHasTransparentBackground(bool) OVERRIDE;
-    virtual void setVisible(bool) OVERRIDE;
-    virtual void setPageScaleFactorAndLimits(float pageScaleFactor, float minimum, float maximum) OVERRIDE;
-    virtual void startPageScaleAnimation(const WebPoint& destination, bool useAnchor, float newPageScale, double durationSec) OVERRIDE;
-    virtual void setNeedsAnimate() OVERRIDE;
-    virtual void setNeedsRedraw() OVERRIDE;
-    virtual bool commitRequested() const OVERRIDE;
-    virtual void composite() OVERRIDE;
-    virtual void updateAnimations(double frameBeginTime) OVERRIDE;
-    virtual void didStopFlinging() OVERRIDE;
-    virtual bool compositeAndReadback(void *pixels, const WebRect&) OVERRIDE;
-    virtual void finishAllRendering() OVERRIDE;
-    virtual void setDeferCommits(bool deferCommits) OVERRIDE;
-    virtual void renderingStats(WebRenderingStats&) const OVERRIDE;
-    virtual void setShowFPSCounter(bool show);
-    virtual void setShowPaintRects(bool show);
-    virtual void setContinuousPaintingEnabled(bool);
+  WEBKIT_COMPOSITOR_BINDINGS_EXPORT cc::LayerTreeHost* layer_tree_host() const;
 
-    // cc::LayerTreeHostClient implementation.
-    virtual void willBeginFrame() OVERRIDE;
-    virtual void didBeginFrame() OVERRIDE;
-    virtual void animate(double monotonicFrameBeginTime) OVERRIDE;
-    virtual void layout() OVERRIDE;
-    virtual void applyScrollAndScale(gfx::Vector2d scrollDelta, float pageScale) OVERRIDE;
-    virtual scoped_ptr<cc::OutputSurface> createOutputSurface() OVERRIDE;
-    virtual void didRecreateOutputSurface(bool success) OVERRIDE;
-    virtual scoped_ptr<cc::InputHandler> createInputHandler() OVERRIDE;
-    virtual void willCommit() OVERRIDE;
-    virtual void didCommit() OVERRIDE;
-    virtual void didCommitAndDrawFrame() OVERRIDE;
-    virtual void didCompleteSwapBuffers() OVERRIDE;
-    virtual void scheduleComposite() OVERRIDE;
-    virtual scoped_ptr<cc::FontAtlas> createFontAtlas();
+  // WebLayerTreeView implementation.
+  virtual void setSurfaceReady() OVERRIDE;
+  virtual void setRootLayer(const WebLayer&) OVERRIDE;
+  virtual void clearRootLayer() OVERRIDE;
+  virtual void setViewportSize(
+      const WebSize& layout_viewport_size,
+      const WebSize& deviceViewportSize = WebSize()) OVERRIDE;
+  virtual WebSize layoutViewportSize() const OVERRIDE;
+  virtual WebSize deviceViewportSize() const OVERRIDE;
+  virtual WebFloatPoint adjustEventPointForPinchZoom(
+      const WebFloatPoint& point) const OVERRIDE;
+  virtual void setDeviceScaleFactor(float device_scale_factor) OVERRIDE;
+  virtual float deviceScaleFactor() const OVERRIDE;
+  virtual void setBackgroundColor(WebColor) OVERRIDE;
+  virtual void setHasTransparentBackground(bool transparent) OVERRIDE;
+  virtual void setVisible(bool visible) OVERRIDE;
+  virtual void setPageScaleFactorAndLimits(float page_scale_factor,
+                                           float minimum,
+                                           float maximum) OVERRIDE;
+  virtual void startPageScaleAnimation(const WebPoint& destination,
+                                       bool use_anchor,
+                                       float new_page_scale,
+                                       double duration_sec) OVERRIDE;
+  virtual void setNeedsAnimate() OVERRIDE;
+  virtual void setNeedsRedraw() OVERRIDE;
+  virtual bool commitRequested() const OVERRIDE;
+  virtual void composite() OVERRIDE;
+  virtual void updateAnimations(double frame_begin_time) OVERRIDE;
+  virtual void didStopFlinging() OVERRIDE;
+  virtual bool compositeAndReadback(void* pixels,
+                                    const WebRect& viewport_rect) OVERRIDE;
+  virtual void finishAllRendering() OVERRIDE;
+  virtual void setDeferCommits(bool defer_commits) OVERRIDE;
+  virtual void renderingStats(WebRenderingStats& stats) const OVERRIDE;
+  virtual void setShowFPSCounter(bool show);
+  virtual void setShowPaintRects(bool show);
+  virtual void setContinuousPaintingEnabled(bool enabled);
 
-private:
-    WebLayerTreeViewClient* m_client;
-    scoped_ptr<cc::LayerTreeHost> m_layerTreeHost;
+  // cc::LayerTreeHostClient implementation.
+  virtual void willBeginFrame() OVERRIDE;
+  virtual void didBeginFrame() OVERRIDE;
+  virtual void animate(double monotonicFrameBeginTime) OVERRIDE;
+  virtual void layout() OVERRIDE;
+  virtual void applyScrollAndScale(gfx::Vector2d scroll_delta,
+                                   float page_scale) OVERRIDE;
+  virtual scoped_ptr<cc::OutputSurface> createOutputSurface() OVERRIDE;
+  virtual void didRecreateOutputSurface(bool success) OVERRIDE;
+  virtual scoped_ptr<cc::InputHandler> createInputHandler() OVERRIDE;
+  virtual void willCommit() OVERRIDE;
+  virtual void didCommit() OVERRIDE;
+  virtual void didCommitAndDrawFrame() OVERRIDE;
+  virtual void didCompleteSwapBuffers() OVERRIDE;
+  virtual void scheduleComposite() OVERRIDE;
+  virtual scoped_ptr<cc::FontAtlas> createFontAtlas();
+
+ private:
+  WebLayerTreeViewClient* client_;
+  scoped_ptr<cc::LayerTreeHost> layer_tree_host_;
 };
 
-} // namespace WebKit
+}  // namespace WebKit
 
-#endif // WebLayerTreeViewImpl_h
+#endif  // WEBKIT_COMPOSITOR_BINDINGS_WEB_LAYER_TREE_VIEW_IMPL_H_