[gtk] tabcontents fade-out for instant.

chrome/browser/renderer_host/render_widget_host_view_gtk.h

 // 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.
 
 #ifndef CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GTK_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GTK_H_
 #pragma once
 
 #include <gdk/gdk.h>
 
 #include <vector>
 #include <string>
 
+#include "app/animation_delegate.h"
+#include "app/slide_animation.h"
 #include "base/scoped_ptr.h"
 #include "base/time.h"
 #include "chrome/browser/gtk/owned_widget_gtk.h"
 #include "chrome/browser/renderer_host/render_widget_host_view.h"
 #include "gfx/native_widget_types.h"
 #include "gfx/rect.h"
 #include "webkit/glue/plugins/gtk_plugin_container_manager.h"
 #include "webkit/glue/webcursor.h"
 
 class RenderWidgetHost;
 class GtkIMContextWrapper;
 class GtkKeyBindingsHandler;
 #if !defined(TOOLKIT_VIEWS)
 class MenuGtk;
 #endif
 struct NativeWebKeyboardEvent;
 
 #if defined(OS_CHROMEOS)
 namespace views {
 class TooltipWindowGtk;
 }
 #endif  // defined(OS_CHROMEOS)
 
 typedef struct _GtkClipboard GtkClipboard;
 typedef struct _GtkSelectionData GtkSelectionData;
 
 // -----------------------------------------------------------------------------
 // See comments in render_widget_host_view.h about this class and its members.
 // -----------------------------------------------------------------------------
-class RenderWidgetHostViewGtk : public RenderWidgetHostView {
+class RenderWidgetHostViewGtk : public RenderWidgetHostView,
+                                public AnimationDelegate {
  public:
   explicit RenderWidgetHostViewGtk(RenderWidgetHost* widget);
   ~RenderWidgetHostViewGtk();
 
   // Initialize this object for use as a drawing area.
   void InitAsChild();
 
   // RenderWidgetHostView implementation.
   virtual void InitAsPopup(RenderWidgetHostView* parent_host_view,
                            const gfx::Rect& pos);
@@ skipping 23 matching lines @@
   virtual void RenderViewGone();
   virtual void Destroy();
   virtual void WillDestroyRenderWidget(RenderWidgetHost* rwh) {}
   virtual void SetTooltipText(const std::wstring& tooltip_text);
   virtual void SelectionChanged(const std::string& text);
   virtual void ShowingContextMenu(bool showing);
   virtual BackingStore* AllocBackingStore(const gfx::Size& size);
   virtual void SetBackground(const SkBitmap& background);
   virtual void CreatePluginContainer(gfx::PluginWindowHandle id);
   virtual void DestroyPluginContainer(gfx::PluginWindowHandle id);
-  virtual void SetVisuallyDeemphasized(bool deemphasized);
+  virtual void SetVisuallyDeemphasized(const SkColor* color, bool animate);
   virtual bool ContainsNativeView(gfx::NativeView native_view) const;
   virtual void AcceleratedCompositingActivated(bool activated);
 
+  // AnimationDelegate implementation.
+  virtual void AnimationEnded(const Animation* animation);
+  virtual void AnimationProgressed(const Animation* animation);
+  virtual void AnimationCanceled(const Animation* animation);
+
   gfx::NativeView native_view() const { return view_.get(); }
 
   // If the widget is aligned with an edge of the monitor its on and the user
   // attempts to drag past that edge we track the number of times it has
   // occurred, so that we can force the widget to scroll when it otherwise
   // would be unable to.
   void ModifyEventForEdgeDragging(GtkWidget* widget, GdkEventMotion* event);
   void Paint(const gfx::Rect&);
 
   // Called by GtkIMContextWrapper to forward a keyboard event to renderer.
@@ skipping 56 matching lines @@
   bool is_showing_context_menu_;
 
   // The time at which this view started displaying white pixels as a result of
   // not having anything to paint (empty backing store from renderer). This
   // value returns true for is_null() if we are not recording whiteout times.
   base::TimeTicks whiteout_start_time_;
 
   // The time it took after this view was selected for it to be fully painted.
   base::TimeTicks tab_switch_paint_time_;
 
-  // If true, fade the render widget when painting it.
-  bool visually_deemphasized_;
+  // A color we use to shade the entire render view. If 100% transparent, we do
+  // not shade the render view.
+  SkColor overlay_color_;
+
+  // The animation used for the abovementioned shade effect. The animation's
+  // value affects the alpha we use for |overlay_color_|.
+  SlideAnimation overlay_animation_;
 
   // Variables used only for popups --------------------------------------------
   // Our parent widget.
   RenderWidgetHostView* parent_host_view_;
   // The native view of our parent, equivalent to
   // parent_host_view_->GetNativeView().
   GtkWidget* parent_;
   // We ignore the first mouse release on popups.  This allows the popup to
   // stay open.
   bool is_popup_first_mouse_release_;
@@ skipping 31 matching lines @@
   // indicate the top edge, positive the bottom.
   int dragged_at_vertical_edge_;
 
 #if defined(OS_CHROMEOS)
   // Custimized tooltip window.
   scoped_ptr<views::TooltipWindowGtk> tooltip_window_;
 #endif  // defined(OS_CHROMEOS)
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GTK_H_