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
  16 // Shelf overflow chevron button.
  17 class OverflowButton : public views::CustomButton {
  18  public:
  19   explicit OverflowButton(views::ButtonListener* listener);
  20   ~OverflowButton() override;
  21
  22   void OnShelfAlignmentChanged();
  23
  24  private:
  25   void PaintBackground(gfx::Canvas* canvas, int alpha);
  26
  27   // views::View overrides:
  28   void OnPaint(gfx::Canvas* canvas) override;
  29
  30   // Left and right images are rotations of bottom_image and are
  31   // owned by the overflow button.
  32   gfx::ImageSkia left_image_;
  33   gfx::ImageSkia right_image_;
  34   // Bottom image is owned by the resource bundle.
  35   const gfx::ImageSkia* bottom_image_;
  36
  37   DISALLOW_COPY_AND_ASSIGN(OverflowButton);
  38 };
  39
  40 }  // namespace ash
  41
  42 #endif  // ASH_SHELF_OVERFLOW_BUTTON_H_