| // Copyright (c) 2012 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. |
| |
| #include "chrome/browser/ui/ash/volume_controller_chromeos.h" |
| |
| #include "ash/ash_switches.h" |
| #include "chrome/browser/browser_process.h" |
| #include "chrome/browser/extensions/api/system_private/system_private_api.h" |
| #include "content/public/browser/user_metrics.h" |
| |
| using chromeos::CrasAudioHandler; |
| |
| namespace { |
| |
| // Percent by which the volume should be changed when a volume key is pressed. |
| const double kStepPercentage = 4.0; |
| |
| } // namespace |
| |
| VolumeController::VolumeController() { |
| CrasAudioHandler::Get()->AddAudioObserver(this); |
| } |
| |
| VolumeController::~VolumeController() { |
| if (CrasAudioHandler::IsInitialized()) |
| CrasAudioHandler::Get()->RemoveAudioObserver(this); |
| } |
| |
| bool VolumeController::HandleVolumeMute(const ui::Accelerator& accelerator) { |
| if (accelerator.key_code() == ui::VKEY_VOLUME_MUTE) |
| content::RecordAction(content::UserMetricsAction("Accel_VolumeMute_F8")); |
| |
| CrasAudioHandler::Get()->SetOutputMute(true); |
| return true; |
| } |
| |
| bool VolumeController::HandleVolumeDown(const ui::Accelerator& accelerator) { |
| if (accelerator.key_code() == ui::VKEY_VOLUME_DOWN) |
| content::RecordAction(content::UserMetricsAction("Accel_VolumeDown_F9")); |
| |
| CrasAudioHandler* audio_handler = CrasAudioHandler::Get(); |
| if (audio_handler->IsOutputMuted()) { |
| audio_handler->SetOutputVolumePercent(0); |
| } else { |
| audio_handler->AdjustOutputVolumeByPercent(-kStepPercentage); |
| if (audio_handler->IsOutputVolumeBelowDefaultMuteLvel()) |
| audio_handler->SetOutputMute(true); |
| } |
| return true; |
| } |
| |
| bool VolumeController::HandleVolumeUp(const ui::Accelerator& accelerator) { |
| if (accelerator.key_code() == ui::VKEY_VOLUME_UP) |
| content::RecordAction(content::UserMetricsAction("Accel_VolumeUp_F10")); |
| |
| CrasAudioHandler* audio_handler = CrasAudioHandler::Get(); |
| if (audio_handler->IsOutputMuted()) { |
| audio_handler->SetOutputMute(false); |
| audio_handler->AdjustOutputVolumeToAudibleLevel(); |
| } else { |
| audio_handler->AdjustOutputVolumeByPercent(kStepPercentage); |
| } |
| |
| return true; |
| } |
| |
| void VolumeController::OnOutputVolumeChanged() { |
| CrasAudioHandler* audio_handler = CrasAudioHandler::Get(); |
| extensions::DispatchVolumeChangedEvent( |
| audio_handler->GetOutputVolumePercent(), |
| audio_handler->IsOutputMuted()); |
| } |
| |
| void VolumeController::OnOutputMuteChanged() { |
| CrasAudioHandler* audio_handler = CrasAudioHandler::Get(); |
| extensions::DispatchVolumeChangedEvent( |
| audio_handler->GetOutputVolumePercent(), |
| audio_handler->IsOutputMuted()); |
| } |