text: // Copyright 2016 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 ASH_COMMON_SYSTEM_TRAY_SYSTEM_MENU_BUTTON_H_
  #define ASH_COMMON_SYSTEM_TRAY_SYSTEM_MENU_BUTTON_H_
  
  #include "ash/common/system/tray/tray_popup_ink_drop_style.h"
  #include "ash/resources/vector_icons/vector_icons.h"
  #include "base/macros.h"
  #include "base/optional.h"
  #include "ui/gfx/image/image_skia.h"
  #include "ui/views/controls/button/button.h"
  #include "ui/views/controls/button/image_button.h"
  
  namespace ash {
  
  // A 48x48 image button with a material design ripple effect, which can be
  // used across Ash material design native UI menus.
  // TODO(tdanderson): Deprecate TrayPopupHeaderButton in favor of
  // SystemMenuButton once material design is enabled by default. See
  // crbug.com/614453.
  class SystemMenuButton : public views::ImageButton {
   public:
    // Constructs the button with |listener| and a centered icon corresponding to
    // |normal_icon| when button is enabled and |disabled_icon| when it is
    // disabled. |ink_drop_style| specifies which flavor of the ink drop should be
    // used. |accessible_name_id| corresponds to the string in ui::ResourceBundle
    // to use for the button's accessible and tooltip text.
    SystemMenuButton(views::ButtonListener* listener,
                     TrayPopupInkDropStyle ink_drop_style,
                     gfx::ImageSkia normal_icon,
                     gfx::ImageSkia disabled_icon,
                     int accessible_name_id);
  
    // Similar to the above constructor. Just gets a single vector icon and
    // creates the normal and disabled icons based on that using default menu icon
    // colors.
    SystemMenuButton(views::ButtonListener* listener,
                     TrayPopupInkDropStyle ink_drop_style,
                     const gfx::VectorIcon& icon,
                     int accessible_name_id);
    ~SystemMenuButton() override;
  
    // Explicity sets the ink drop color. Otherwise the default value will be used
    // by TrayPopupUtils::CreateInkDropRipple() and
    // TrayPopupUtils::CreateInkDropHighlight().
    void SetInkDropColor(SkColor color);
  
    // views::ImageButton:
    std::unique_ptr<views::InkDrop> CreateInkDrop() override;
    std::unique_ptr<views::InkDropRipple> CreateInkDropRipple() const override;
    std::unique_ptr<views::InkDropHighlight> CreateInkDropHighlight()
        const override;
    std::unique_ptr<views::InkDropMask> CreateInkDropMask() const override;
  
   private:
    // Returns the size that the ink drop should be constructed with.
    gfx::Size GetInkDropSize() const;
  
    // Defines the flavor of ink drop ripple/highlight that should be constructed.
    TrayPopupInkDropStyle ink_drop_style_;
  
    // The color to use when creating the ink drop. If null the default color is
    // used as defined by TrayPopupUtils::CreateInkDropRipple() and
    // TrayPopupUtils::CreateInkDropHighlight().
    base::Optional<SkColor> ink_drop_color_;
  
    DISALLOW_COPY_AND_ASSIGN(SystemMenuButton);
  };
  
  }  // namespace ash
  
  #endif  // ASH_COMMON_SYSTEM_TRAY_SYSTEM_MENU_BUTTON_H_
  