3D Compositing in <browser>, first draft.

content/browser/renderer_host/render_widget_host_view_gtk.cc

 // Copyright (c) 2012 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_gtk.h"
 
 // If this gets included after the gtk headers, then a bunch of compiler
 // errors happen because of a "#define Status int" in Xlib.h, which interacts
 // badly with net::URLRequestStatus::Status.
 #include "content/common/view_messages.h"
@@ skipping 549 matching lines @@
     RenderWidgetHostImpl::From(
         host_view->GetRenderWidgetHost())->ForwardWheelEvent(web_event);
     return FALSE;
   }
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(RenderWidgetHostViewGtkWidget);
 };
 
 RenderWidgetHostViewGtk::RenderWidgetHostViewGtk(
     content::RenderWidgetHost* widget_host)
-    : host_(RenderWidgetHostImpl::From(widget_host)),
+    : RenderWidgetHostViewBase(scoped_ptr<CompositingDelegate> (new CompositingDelegateGtk(this)).Pass()),
+      host_(RenderWidgetHostImpl::From(widget_host)),
       about_to_validate_and_paint_(false),
       is_hidden_(false),
       is_loading_(false),
       parent_(NULL),
       is_popup_first_mouse_release_(true),
       was_imcontext_focused_before_grab_(false),
       do_x_grab_(false),
       is_fullscreen_(false),
       made_active_(false),
       destroy_handler_id_(0),
@@ skipping 438 matching lines @@
 
 void RenderWidgetHostViewGtk::CopyFromCompositingSurface(
     const gfx::Size& size,
     skia::PlatformCanvas* output,
     base::Callback<void(bool)> callback) {
   // TODO(mazda): Implement this.
   NOTIMPLEMENTED();
   callback.Run(false);
 }
 
-void RenderWidgetHostViewGtk::AcceleratedSurfaceBuffersSwapped(
+void RenderWidgetHostViewGtk::CompositingDelegateGtk::AcceleratedSurfaceBuffersSwapped(
     const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
     int gpu_host_id) {
   RenderWidgetHostImpl::AcknowledgeBufferPresent(
       params.route_id, gpu_host_id, 0);
 }
 
-void RenderWidgetHostViewGtk::AcceleratedSurfacePostSubBuffer(
+void RenderWidgetHostViewGtk::CompositingDelegateGtk::AcceleratedSurfacePostSubBuffer(
     const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
     int gpu_host_id) {
   RenderWidgetHostImpl::AcknowledgeBufferPresent(
       params.route_id, gpu_host_id, 0);
 }
 
 void RenderWidgetHostViewGtk::AcceleratedSurfaceSuspend() {
 }
 
 bool RenderWidgetHostViewGtk::HasAcceleratedSurface(
@@ skipping 194 matching lines @@
   GdkRectangle frame_extents;
   GdkWindow* gdk_window = gtk_widget_get_window(toplevel);
   if (!gdk_window)
     return gfx::Rect();
 
   gdk_window_get_frame_extents(gdk_window, &frame_extents);
   return gfx::Rect(frame_extents.x, frame_extents.y,
                    frame_extents.width, frame_extents.height);
 }
 
-gfx::GLSurfaceHandle RenderWidgetHostViewGtk::GetCompositingSurface() {
-  if (compositing_surface_ == gfx::kNullPluginWindow) {
-    GtkNativeViewManager* manager = GtkNativeViewManager::GetInstance();
-    gfx::NativeViewId view_id = GetNativeViewId();
-
-    if (!manager->GetPermanentXIDForId(&compositing_surface_, view_id)) {
-      DLOG(ERROR) << "Can't find XID for view id " << view_id;
-    }
-  }
-  return gfx::GLSurfaceHandle(compositing_surface_, true);
-}
-
 bool RenderWidgetHostViewGtk::LockMouse() {
   if (mouse_locked_)
     return true;
 
   mouse_locked_ = true;
 
   // Release any current grab.
   GtkWidget* current_grab_window = gtk_grab_get_current();
   if (current_grab_window) {
     gtk_grab_remove(current_grab_window);
@@ skipping 236 matching lines @@
             parent,
             static_cast<content::AccessibilityNodeData::State>(0),
             this));
   }
   BrowserAccessibilityGtk* root =
       browser_accessibility_manager_->GetRoot()->ToBrowserAccessibilityGtk();
 
   atk_object_set_role(root->GetAtkObject(), ATK_ROLE_HTML_CONTAINER);
   return root->GetAtkObject();
 }
+
+////////////////////////////////////////////////////////////////////////////////
+// CompositingDelegateGtk
+
+gfx::GLSurfaceHandle
+RenderWidgetHostViewGtk::CompositingDelegateGtk::GetCompositingSurface() {
+  if (view_->compositing_surface_ == gfx::kNullPluginWindow) {
+    GtkNativeViewManager* manager = GtkNativeViewManager::GetInstance();
+    gfx::NativeViewId view_id = view_->GetNativeViewId();
+
+    if (!manager->GetPermanentXIDForId(&view_->compositing_surface_, view_id)) {
+      DLOG(ERROR) << "Can't find XID for view id " << view_id;
+    }
+  }
+  return gfx::GLSurfaceHandle(view_->compositing_surface_, true);
+}
+
+bool
+RenderWidgetHostViewGtk::CompositingDelegateGtk::ResizeNeedsNewSurface() {
+  return true;
+}