ash/system/audio/volume_view.h

   1 // Copyright 2014 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_SYSTEM_AUDIO_VOLUME_VIEW_H_
   6 #define ASH_SYSTEM_AUDIO_VOLUME_VIEW_H_
   7
   8 #include "ash/system/tray/actionable_view.h"
   9 #include "ui/gfx/font.h"
  10 #include "ui/views/controls/button/button.h"
  11 #include "ui/views/controls/slider.h"
  12
  13 namespace views {
  14 class View;
  15 class ImageView;
  16 class Separator;
  17 class Slider;
  18 }
  19
  20 namespace ash {
  21 class SystemTrayItem;
  22
  23 namespace system {
  24 class TrayAudioDelegate;
  25 }
  26
  27 namespace tray {
  28 class VolumeButton;
  29
  30 class VolumeView : public ActionableView,
  31                    public views::ButtonListener,
  32                    public views::SliderListener {
  33  public:
  34   VolumeView(SystemTrayItem* owner,
  35              system::TrayAudioDelegate* audio_delegate,
  36              bool is_default_view);
  37
  38   ~VolumeView() override;
  39
  40   void Update();
  41
  42   // Sets volume level on slider_, |percent| is ranged from [0.00] to [1.00].
  43   void SetVolumeLevel(float percent);
  44
  45  private:
  46   // Updates bar_, device_type_ icon, and more_ buttons.
  47   void UpdateDeviceTypeAndMore();
  48   void HandleVolumeUp(float percent);
  49   void HandleVolumeDown(float percent);
  50
  51   // Overridden from views::ButtonListener.
  52   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
  53
  54   // Overridden from views::SliderListener.
  55   void SliderValueChanged(views::Slider* sender,
  56                           float value,
  57                           float old_value,
  58                           views::SliderChangeReason reason) override;
  59
  60   // Overriden from ActionableView.
  61   bool PerformAction(const ui::Event& event) override;
  62
  63   // views::View:
  64   void OnBoundsChanged(const gfx::Rect& previous_bounds) override;
  65
  66   SystemTrayItem* owner_;
  67   system::TrayAudioDelegate* audio_delegate_;
  68   views::View* more_region_;
  69   VolumeButton* icon_;
  70   views::Slider* slider_;
  71   views::Separator* separator_;
  72   views::ImageView* device_type_;
  73   views::ImageView* more_;
  74   bool is_default_view_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(VolumeView);
  77 };
  78
  79 }  // namespace tray
  80 }  // namespace ash
  81
  82 #endif  // ASH_SYSTEM_AUDIO_VOLUME_VIEW_H_
  83