Implement the sad tab crash animation for tabs in linux.

chrome/browser/gtk/tabs/tab_renderer_gtk.h

 // Copyright (c) 2006-2008 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_GTK_TABS_TAB_RENDERER_GTK_H_
 #define CHROME_BROWSER_GTK_TABS_TAB_RENDERER_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include "app/animation.h"
@@ skipping 127 matching lines @@
   std::wstring GetTitle() const;
 
   // Called by TabGtk to notify the renderer that the tab is being hovered.
   void OnMouseEntered();
 
   // Called by TabGtk to notify the renderer that the tab is no longer being
   // hovered.
   void OnMouseExited();
 
  private:
+  class FavIconCrashAnimation;
+
   // Model data. We store this here so that we don't need to ask the underlying
   // model, which is tricky since instances of this object can outlive the
   // corresponding objects in the underlying model.
   struct TabData {
     SkBitmap favicon;
     std::wstring title;
     bool loading;
     bool crashed;
     bool off_the_record;
     bool show_icon;
     bool show_download_icon;
   };
 
   // TODO(jhawkins): Move into TabResources class.
   struct TabImage {
     SkBitmap* image_l;
     SkBitmap* image_c;
     SkBitmap* image_r;
     int l_width;
     int r_width;
   };
 
   // Overridden from AnimationDelegate:
   virtual void AnimationProgressed(const Animation* animation);
   virtual void AnimationCanceled(const Animation* animation);
   virtual void AnimationEnded(const Animation* animation);
 
+  // Starts/Stops the crash animation.
+  void StartCrashAnimation();
+  void StopCrashAnimation();
+
+  // Return true if the crash animation is currently running.
+  bool IsPerformingCrashAnimation() const;
+
+  // Set the temporary offset for the favicon. This is used during animation.
+  void SetFavIconHidingOffset(int offset);
+
+  void DisplayCrashedFavIcon();
+  void ResetCrashedFavIcon();
+
   // Generates the bounds for the interior items of the tab.
   void Layout();
 
   // Returns the largest of the favicon, title text, and the close button.
   static int GetContentHeight();
 
   // Paint various portions of the Tab
   void PaintTabBackground(gfx::CanvasPaint* canvas);
   void PaintInactiveTabBackground(gfx::CanvasPaint* canvas);
   void PaintActiveTabBackground(gfx::CanvasPaint* canvas);
@@ skipping 50 matching lines @@
   // Whether we are showing the download icon. Comes from the model.
   bool showing_download_icon_;
 
   // Whether we are showing the close button. It is cached so that we can
   // detect when it changes and layout appropriately.
   bool showing_close_button_;
 
   // The offset used to animate the favicon location.
   int fav_icon_hiding_offset_;
 
+  // The animation object used to swap the favicon with the sad tab icon.
+  scoped_ptr<FavIconCrashAnimation> crash_animation_;
+
   // Set when the crashed favicon should be displayed.
   bool should_display_crashed_favicon_;
 
   // The bounds of this Tab.
   gfx::Rect bounds_;
 
   // Hover animation.
   scoped_ptr<SlideAnimation> hover_animation_;
 
   // Contains the loading animation state.
   LoadingAnimation loading_animation_;
 
   // TODO(jhawkins): If the theme is changed after the tab is created, we'll
   // still render the old theme for this tab.
   ThemeProvider* theme_provider_;
 
   DISALLOW_COPY_AND_ASSIGN(TabRendererGtk);
 };
 
 #endif  // CHROME_BROWSER_GTK_TABS_TAB_RENDERER_GTK_H_