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 }
  17
  18 namespace ash {
  19 class HoverHighlightView;
  20 class SystemTrayItem;
  21
  22 namespace system {
  23 class TrayAudioDelegate;
  24 }
  25
  26 namespace tray {
  27 class BarSeparator;
  28 class VolumeButton;
  29 class VolumeSlider;
  30
  31 class VolumeView : public ActionableView,
  32                    public views::ButtonListener,
  33                    public views::SliderListener {
  34  public:
  35   VolumeView(SystemTrayItem* owner,
  36              system::TrayAudioDelegate* audio_delegate,
  37              bool is_default_view);
  38
  39   virtual ~VolumeView();
  40
  41   void Update();
  42
  43   // Sets volume level on slider_, |percent| is ranged from [0.00] to [1.00].
  44   void SetVolumeLevel(float percent);
  45
  46  private:
  47   // Updates bar_, device_type_ icon, and more_ buttons.
  48   void UpdateDeviceTypeAndMore();
  49   void HandleVolumeUp(float percent);
  50   void HandleVolumeDown(float percent);
  51
  52   // Overridden from views::View.
  53   virtual void Layout() override;
  54
  55   // Overridden from views::ButtonListener.
  56   virtual void ButtonPressed(views::Button* sender,
  57                              const ui::Event& event) override;
  58
  59   // Overridden from views::SliderListener.
  60   virtual void SliderValueChanged(views::Slider* sender,
  61                                   float value,
  62                                   float old_value,
  63                                   views::SliderChangeReason reason) override;
  64
  65   // Overriden from ActionableView.
  66   virtual bool PerformAction(const ui::Event& event) override;
  67
  68   SystemTrayItem* owner_;
  69   system::TrayAudioDelegate* audio_delegate_;
  70   VolumeButton* icon_;
  71   VolumeSlider* slider_;
  72   BarSeparator* bar_;
  73   views::ImageView* device_type_;
  74   views::ImageView* more_;
  75   bool is_default_view_;
  76
  77   DISALLOW_COPY_AND_ASSIGN(VolumeView);
  78 };
  79
  80 }  // namespace tray
  81 }  // namespace ash
  82
  83 #endif  // ASH_SYSTEM_AUDIO_VOLUME_VIEW_H_
  84