chrome/browser/ui/gtk/titlebar_throb_animation.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_UI_GTK_TITLEBAR_THROB_ANIMATION_H_
   6 #define CHROME_BROWSER_UI_GTK_TITLEBAR_THROB_ANIMATION_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "ui/gfx/gtk_util.h"
  11
  12 // A helper class to keep track of which frame of the throbber animation
  13 // we're showing.
  14 class TitlebarThrobAnimation {
  15  public:
  16   TitlebarThrobAnimation();
  17
  18   // Get the next frame in the animation. The image is owned by the throbber
  19   // so the caller doesn't need to unref. |is_waiting| is true if we're
  20   // still waiting for a response.
  21   GdkPixbuf* GetNextFrame(bool is_waiting);
  22
  23   // Reset back to the first frame.
  24   void Reset();
  25
  26  private:
  27   // Make sure the frames are loaded.
  28   static void InitFrames();
  29
  30   int current_frame_;
  31   int current_waiting_frame_;
  32
  33   DISALLOW_COPY_AND_ASSIGN(TitlebarThrobAnimation);
  34 };
  35
  36 #endif  // CHROME_BROWSER_UI_GTK_TITLEBAR_THROB_ANIMATION_H_