[gtk] tabcontents fade-out for instant.

chrome/browser/tab_contents/tab_contents.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/tab_contents/tab_contents.h"
 
 #include <cmath>
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
@@ skipping 780 matching lines @@
     rwhv->DidBecomeSelected();
 #if defined(OS_MACOSX)
     rwhv->SetActive(true);
 #endif
   }
 
   WebCacheManager::GetInstance()->ObserveActivity(GetRenderProcessHost()->id());
   last_selected_time_ = base::TimeTicks::Now();
 }
 
+void TabContents::FadeForInstant() {
+  RenderWidgetHostView* rwhv = GetRenderWidgetHostView();
+  SkColor whitish = SkColorSetARGB(192, 255, 255, 255);
+  if (rwhv)
+    rwhv->SetVisuallyDeemphasized(&whitish, true);
+}
+
+void TabContents::CancelInstantFade() {
+  RenderWidgetHostView* rwhv = GetRenderWidgetHostView();
+  if (rwhv)
+    rwhv->SetVisuallyDeemphasized(NULL, false);
+}
+
 void TabContents::WasHidden() {
   if (!capturing_contents()) {
     // |render_view_host()| can be NULL if the user middle clicks a link to open
     // a tab in then background, then closes the tab before selecting it.  This
     // is because closing the tab calls TabContents::Destroy(), which removes
     // the |render_view_host()|; then when we actually destroy the window,
     // OnWindowPosChanged() notices and calls HideContents() (which calls us).
     RenderWidgetHostView* rwhv = GetRenderWidgetHostView();
     if (rwhv)
       rwhv->WasHidden();
@@ skipping 155 matching lines @@
   if (child_windows_.size() == 1) {
     window->ShowConstrainedWindow();
     BlockTabContent(true);
   }
 
   return window;
 }
 
 void TabContents::BlockTabContent(bool blocked) {
   RenderWidgetHostView* rwhv = GetRenderWidgetHostView();
+  // 70% opaque grey.
+  SkColor greyish = SkColorSetARGB(178, 0, 0, 0);
   if (rwhv)
-    rwhv->SetVisuallyDeemphasized(blocked);
+    rwhv->SetVisuallyDeemphasized(blocked ? &greyish : NULL, false);
   render_view_host()->set_ignore_input_events(blocked);
   if (delegate_)
     delegate_->SetTabContentBlocked(this, blocked);
 }
 
 void TabContents::AddNewContents(TabContents* new_contents,
                                  WindowOpenDisposition disposition,
                                  const gfx::Rect& initial_pos,
                                  bool user_gesture) {
   if (all_contents_blocked_) {
@@ skipping 2294 matching lines @@
 }
 
 void TabContents::SwapInRenderViewHost(RenderViewHost* rvh) {
   render_manager_.SwapInRenderViewHost(rvh);
 }
 
 void TabContents::CreateViewAndSetSizeForRVH(RenderViewHost* rvh) {
   RenderWidgetHostView* rwh_view = view()->CreateViewForWidget(rvh);
   rwh_view->SetSize(view()->GetContainerSize());
 }