src/ash/system/audio/tray_audio.cc

   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 #include "ash/system/audio/tray_audio.h"
   6
   7 #include <cmath>
   8
   9 #include "ash/ash_constants.h"
  10 #include "ash/metrics/user_metrics_recorder.h"
  11 #include "ash/shell.h"
  12 #include "ash/system/audio/tray_audio_delegate.h"
  13 #include "ash/system/audio/volume_view.h"
  14 #include "ash/system/tray/actionable_view.h"
  15 #include "ash/system/tray/fixed_sized_scroll_view.h"
  16 #include "ash/system/tray/hover_highlight_view.h"
  17 #include "ash/system/tray/system_tray.h"
  18 #include "ash/system/tray/system_tray_delegate.h"
  19 #include "ash/system/tray/system_tray_notifier.h"
  20 #include "ash/system/tray/tray_constants.h"
  21 #include "ash/volume_control_delegate.h"
  22 #include "base/strings/utf_string_conversions.h"
  23 #include "grit/ash_resources.h"
  24 #include "grit/ash_strings.h"
  25 #include "third_party/skia/include/core/SkCanvas.h"
  26 #include "third_party/skia/include/core/SkPaint.h"
  27 #include "third_party/skia/include/core/SkRect.h"
  28 #include "third_party/skia/include/effects/SkGradientShader.h"
  29 #include "ui/gfx/canvas.h"
  30 #include "ui/gfx/font_list.h"
  31 #include "ui/gfx/image/image.h"
  32 #include "ui/gfx/image/image_skia_operations.h"
  33 #include "ui/views/controls/button/image_button.h"
  34 #include "ui/views/controls/image_view.h"
  35 #include "ui/views/controls/label.h"
  36 #include "ui/views/controls/slider.h"
  37 #include "ui/views/layout/box_layout.h"
  38 #include "ui/views/view.h"
  39
  40 namespace ash {
  41
  42 TrayAudio::TrayAudio(SystemTray* system_tray,
  43                      scoped_ptr<system::TrayAudioDelegate> audio_delegate)
  44     : TrayImageItem(system_tray, IDR_AURA_UBER_TRAY_VOLUME_MUTE),
  45       audio_delegate_(audio_delegate.Pass()),
  46       volume_view_(NULL),
  47       pop_up_volume_view_(false) {
  48   Shell::GetInstance()->system_tray_notifier()->AddAudioObserver(this);
  49 }
  50
  51 TrayAudio::~TrayAudio() {
  52   Shell::GetInstance()->system_tray_notifier()->RemoveAudioObserver(this);
  53 }
  54
  55 // static
  56 bool TrayAudio::ShowAudioDeviceMenu() {
  57 #if defined(OS_CHROMEOS)
  58   return true;
  59 #else
  60   return false;
  61 #endif
  62 }
  63
  64 bool TrayAudio::GetInitialVisibility() {
  65   return audio_delegate_->IsOutputAudioMuted();
  66 }
  67
  68 views::View* TrayAudio::CreateDefaultView(user::LoginStatus status) {
  69   volume_view_ = new tray::VolumeView(this, audio_delegate_.get(), true);
  70   return volume_view_;
  71 }
  72
  73 views::View* TrayAudio::CreateDetailedView(user::LoginStatus status) {
  74   volume_view_ = new tray::VolumeView(this, audio_delegate_.get(), false);
  75   return volume_view_;
  76 }
  77
  78 void TrayAudio::DestroyDefaultView() {
  79   volume_view_ = NULL;
  80 }
  81
  82 void TrayAudio::DestroyDetailedView() {
  83   if (volume_view_) {
  84     volume_view_ = NULL;
  85     pop_up_volume_view_ = false;
  86   }
  87 }
  88
  89 bool TrayAudio::ShouldHideArrow() const {
  90   return true;
  91 }
  92
  93 bool TrayAudio::ShouldShowShelf() const {
  94   return TrayAudio::ShowAudioDeviceMenu() && !pop_up_volume_view_;
  95 }
  96
  97 void TrayAudio::OnOutputVolumeChanged() {
  98   float percent =
  99       static_cast<float>(audio_delegate_->GetOutputVolumeLevel()) / 100.0f;
 100   if (tray_view())
 101     tray_view()->SetVisible(GetInitialVisibility());
 102
 103   if (volume_view_) {
 104     volume_view_->SetVolumeLevel(percent);
 105     SetDetailedViewCloseDelay(kTrayPopupAutoCloseDelayInSeconds);
 106     return;
 107   }
 108   pop_up_volume_view_ = true;
 109   PopupDetailedView(kTrayPopupAutoCloseDelayInSeconds, false);
 110 }
 111
 112 void TrayAudio::OnOutputMuteChanged() {
 113   if (tray_view())
 114       tray_view()->SetVisible(GetInitialVisibility());
 115
 116   if (volume_view_) {
 117     volume_view_->Update();
 118     SetDetailedViewCloseDelay(kTrayPopupAutoCloseDelayInSeconds);
 119   } else {
 120     pop_up_volume_view_ = true;
 121     PopupDetailedView(kTrayPopupAutoCloseDelayInSeconds, false);
 122   }
 123 }
 124
 125 void TrayAudio::OnAudioNodesChanged() {
 126   Update();
 127 }
 128
 129 void TrayAudio::OnActiveOutputNodeChanged() {
 130   Update();
 131 }
 132
 133 void TrayAudio::OnActiveInputNodeChanged() {
 134   Update();
 135 }
 136
 137 void TrayAudio::Update() {
 138   if (tray_view())
 139       tray_view()->SetVisible(GetInitialVisibility());
 140   if (volume_view_) {
 141     volume_view_->SetVolumeLevel(
 142         static_cast<float>(audio_delegate_->GetOutputVolumeLevel()) / 100.0f);
 143     volume_view_->Update();
 144   }
 145 }
 146
 147 }  // namespace ash