ash/shelf/overflow_button.h

   1 // Copyright 2013 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 ASH_SHELF_OVERFLOW_BUTTON_H_
   6 #define ASH_SHELF_OVERFLOW_BUTTON_H_
   7
   8 #include "ash/shelf/shelf_types.h"
   9 #include "base/basictypes.h"
  10 #include "base/compiler_specific.h"
  11 #include "ui/gfx/image/image_skia.h"
  12 #include "ui/views/controls/button/custom_button.h"
  13
  14 namespace ash {
  15 namespace internal {
  16
  17 // Shelf overflow chevron button.
  18 class OverflowButton : public views::CustomButton {
  19  public:
  20   explicit OverflowButton(views::ButtonListener* listener);
  21   virtual ~OverflowButton();
  22
  23   void OnShelfAlignmentChanged();
  24
  25  private:
  26   void PaintBackground(gfx::Canvas* canvas, int alpha);
  27
  28   // views::View overrides:
  29   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
  30
  31   // Left and right images are rotations of bottom_image and are
  32   // owned by the overflow button.
  33   gfx::ImageSkia left_image_;
  34   gfx::ImageSkia right_image_;
  35   // Bottom image is owned by the resource bundle.
  36   const gfx::ImageSkia* bottom_image_;
  37
  38   DISALLOW_COPY_AND_ASSIGN(OverflowButton);
  39 };
  40
  41 }  // namespace internal
  42 }  // namespace ash
  43
  44 #endif  // ASH_SHELF_OVERFLOW_BUTTON_H_