Use inner HWND for accelerated rendering on windows

chrome/browser/renderer_host/render_widget_host.cc

 // Copyright (c) 2010 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 "chrome/browser/renderer_host/render_widget_host.h"
 
 #include "app/keyboard_codes.h"
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
@@ skipping 59 matching lines @@
 RenderWidgetHost::RenderWidgetHost(RenderProcessHost* process,
                                    int routing_id)
     : renderer_initialized_(false),
       renderer_accessible_(false),
       view_(NULL),
       process_(process),
       painting_observer_(NULL),
       routing_id_(routing_id),
       is_loading_(false),
       is_hidden_(false),
-      is_gpu_rendering_active_(false),
+      is_accelerated_compositing_active_(false),
       repaint_ack_pending_(false),
       resize_ack_pending_(false),
       mouse_move_pending_(false),
       mouse_wheel_pending_(false),
       needs_repainting_on_restore_(false),
       is_unresponsive_(false),
       in_get_backing_store_(false),
       view_being_painted_(false),
       ignore_input_events_(false),
       text_direction_updated_(false),
@@ skipping 59 matching lines @@
     IPC_MESSAGE_HANDLER(ViewHostMsg_PaintAtSize_ACK, OnMsgPaintAtSizeAck)
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateRect, OnMsgUpdateRect)
     IPC_MESSAGE_HANDLER(ViewHostMsg_HandleInputEvent_ACK, OnMsgInputEventAck)
     IPC_MESSAGE_HANDLER(ViewHostMsg_Focus, OnMsgFocus)
     IPC_MESSAGE_HANDLER(ViewHostMsg_Blur, OnMsgBlur)
     IPC_MESSAGE_HANDLER(ViewHostMsg_SetCursor, OnMsgSetCursor)
     IPC_MESSAGE_HANDLER(ViewHostMsg_ImeUpdateTextInputState,
                         OnMsgImeUpdateTextInputState)
     IPC_MESSAGE_HANDLER(ViewHostMsg_ImeCancelComposition,
                         OnMsgImeCancelComposition)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_GpuRenderingActivated,
-                        OnMsgGpuRenderingActivated)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_DidActivateAcceleratedCompositing,
+                        OnMsgDidActivateAcceleratedCompositing)
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(ViewHostMsg_GetScreenInfo, OnMsgGetScreenInfo)
     IPC_MESSAGE_HANDLER(ViewHostMsg_GetWindowRect, OnMsgGetWindowRect)
     IPC_MESSAGE_HANDLER(ViewHostMsg_GetRootWindowRect, OnMsgGetRootWindowRect)
     IPC_MESSAGE_HANDLER(ViewHostMsg_SetPluginImeEnabled,
                         OnMsgSetPluginImeEnabled)
     IPC_MESSAGE_HANDLER(ViewHostMsg_AllocateFakePluginWindowHandle,
                         OnAllocateFakePluginWindowHandle)
     IPC_MESSAGE_HANDLER(ViewHostMsg_DestroyFakePluginWindowHandle,
                         OnDestroyFakePluginWindowHandle)
@@ skipping 53 matching lines @@
     return;
   is_hidden_ = false;
 
   BackingStore* backing_store = BackingStoreManager::Lookup(this);
   // If we already have a backing store for this widget, then we don't need to
   // repaint on restore _unless_ we know that our backing store is invalid.
   // When accelerated compositing is on, we must always repaint, even when
   // the backing store exists.
   bool needs_repainting;
   if (needs_repainting_on_restore_ || !backing_store ||
-      is_gpu_rendering_active()) {
+      is_accelerated_compositing_active()) {
     needs_repainting = true;
     needs_repainting_on_restore_ = false;
   } else {
     needs_repainting = false;
   }
   Send(new ViewMsg_WasRestored(routing_id_, needs_repainting));
 
   process_->WidgetRestored();
 
   bool is_visible = true;
@@ skipping 130 matching lines @@
   if (!view_)
     return NULL;
   return view_->AllocBackingStore(size);
 }
 
 void RenderWidgetHost::DonePaintingToBackingStore() {
   Send(new ViewMsg_UpdateRect_ACK(routing_id()));
 }
 
 void RenderWidgetHost::ScheduleComposite() {
-  DCHECK(!is_hidden_ || !is_gpu_rendering_active_) <<
-      "ScheduleCompositeAndSync called while hidden!";
+  if (is_hidden_ || !is_accelerated_compositing_active_) {
+      return;
+  }
 
   // Send out a request to the renderer to paint the view if required.
   if (!repaint_ack_pending_ && !resize_ack_pending_ && !view_being_painted_) {
     repaint_start_time_ = TimeTicks::Now();
     repaint_ack_pending_ = true;
     Send(new ViewMsg_Repaint(routing_id_, current_size_));
   }
 
   // When we have asked the RenderWidget to resize, and we are still waiting on
   // a response, block for a little while to see if we can't get a response.
@@ skipping 227 matching lines @@
 
   // Reset some fields in preparation for recovering from a crash.
   resize_ack_pending_ = false;
   repaint_ack_pending_ = false;
 
   in_flight_size_.SetSize(0, 0);
   in_flight_reserved_rect_.SetRect(0, 0, 0, 0);
   current_size_.SetSize(0, 0);
   current_reserved_rect_.SetRect(0, 0, 0, 0);
   is_hidden_ = false;
-  is_gpu_rendering_active_ = false;
+  is_accelerated_compositing_active_ = false;
 
   if (view_) {
     view_->RenderViewGone();
     view_ = NULL;  // The View should be deleted by RenderViewGone.
   }
 
   BackingStoreManager::RemoveBackingStore(this);
 }
 
 void RenderWidgetHost::UpdateTextDirection(WebTextDirection direction) {
@@ skipping 147 matching lines @@
       ViewHostMsg_UpdateRect_Flags::is_repaint_ack(params.flags);
   if (is_repaint_ack) {
     repaint_ack_pending_ = false;
     TimeDelta delta = TimeTicks::Now() - repaint_start_time_;
     UMA_HISTOGRAM_TIMES("MPArch.RWH_RepaintDelta", delta);
   }
 
   DCHECK(!params.bitmap_rect.IsEmpty());
   DCHECK(!params.view_size.IsEmpty());
 
-  if (!is_gpu_rendering_active_) {
+  if (!is_accelerated_compositing_active_) {
     const size_t size = params.bitmap_rect.height() *
         params.bitmap_rect.width() * 4;
     TransportDIB* dib = process_->GetTransportDIB(params.bitmap);
 
     // If gpu process does painting, scroll_rect and copy_rects are always empty
     // and backing store is never used.
     if (dib) {
       if (dib->size() < size) {
         DLOG(WARNING) << "Transport DIB too small for given rectangle";
         process()->ReceivedBadMessage(ViewHostMsg_UpdateRect__ID);
@@ skipping 26 matching lines @@
   if (is_hidden_)
     return;
 
   // Now paint the view. Watch out: it might be destroyed already.
   if (view_) {
     view_->MovePluginWindows(params.plugin_window_moves);
     // The view_ pointer could be destroyed in the context of MovePluginWindows
     // which attempts to move the plugin windows and in the process could
     // dispatch other window messages which could cause the view to be
     // destroyed.
-    if (view_ && !is_gpu_rendering_active_) {
+    if (view_ && !is_accelerated_compositing_active_) {
       view_being_painted_ = true;
       view_->DidUpdateBackingStore(params.scroll_rect, params.dx, params.dy,
                                    params.copy_rects);
       view_being_painted_ = false;
     }
   }
 
   if (paint_observer_.get())
     paint_observer_->RenderWidgetHostDidPaint(this);
 
@@ skipping 77 matching lines @@
     const gfx::Rect& caret_rect) {
   if (view_)
     view_->ImeUpdateTextInputState(type, caret_rect);
 }
 
 void RenderWidgetHost::OnMsgImeCancelComposition() {
   if (view_)
     view_->ImeCancelComposition();
 }
 
-void RenderWidgetHost::OnMsgGpuRenderingActivated(bool activated) {
+void RenderWidgetHost::OnMsgDidActivateAcceleratedCompositing(bool activated) {
 #if defined(OS_MACOSX)
-  bool old_state = is_gpu_rendering_active_;
+  bool old_state = is_accelerated_compositing_active_;
 #endif
-  is_gpu_rendering_active_ = activated;
+  is_accelerated_compositing_active_ = activated;
 #if defined(OS_MACOSX)
-  if (old_state != is_gpu_rendering_active_ && view_)
+  if (old_state != is_accelerated_compositing_active_ && view_)
     view_->GpuRenderingStateDidChange();
+#elif defined(OS_WIN)
+  view_->ShowCompositorHostWindow(is_accelerated_compositing_active_);
 #endif
 }
 
 #if defined(OS_MACOSX)
 
 void RenderWidgetHost::OnMsgGetScreenInfo(gfx::NativeViewId view,
                                           WebScreenInfo* results) {
   gfx::NativeView native_view = view_ ? view_->GetNativeView() : NULL;
   *results = WebScreenInfoFactory::screenInfo(native_view);
 }
@@ skipping 78 matching lines @@
   }
 }
 
 void RenderWidgetHost::OnMsgDestroyPluginContainer(gfx::PluginWindowHandle id) {
   if (view_) {
     view_->DestroyPluginContainer(id);
   } else {
     NOTIMPLEMENTED();
   }
 }
-
 #endif
 
 void RenderWidgetHost::PaintBackingStoreRect(
     TransportDIB::Id bitmap,
     const gfx::Rect& bitmap_rect,
     const std::vector<gfx::Rect>& copy_rects,
     const gfx::Size& view_size) {
   // The view may be destroyed already.
   if (!view_)
     return;
@@ skipping 104 matching lines @@
     // of this key event.
     if (!processed && !is_hidden_ && !front_item.skip_in_browser) {
       UnhandledKeyboardEvent(front_item);
 
       // WARNING: This RenderWidgetHost can be deallocated at this point
       // (i.e.  in the case of Ctrl+W, where the call to
       // UnhandledKeyboardEvent destroys this RenderWidgetHost).
     }
   }
 }