Index: ash/ash_touch_exploration_manager_chromeos.cc |
diff --git a/ash/ash_touch_exploration_manager_chromeos.cc b/ash/ash_touch_exploration_manager_chromeos.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..6891173c9fdcad2991296ce8363043b187de5693 |
--- /dev/null |
+++ b/ash/ash_touch_exploration_manager_chromeos.cc |
@@ -0,0 +1,79 @@ |
+// 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 "ash/ash_touch_exploration_manager_chromeos.h" |
+ |
+#include "ash/audio/sounds.h" |
+#include "ash/shell.h" |
+#include "ash/shell_delegate.h" |
James Cook
2014/07/15 18:21:57
Do you need this include? Or ash/accessibility_de
lisayin
2014/07/15 21:46:44
Done.
|
+#include "ash/system/tray/system_tray_notifier.h" |
+#include "base/command_line.h" |
+#include "chromeos/audio/chromeos_sounds.h" |
+#include "chromeos/chromeos_switches.h" |
+#include "ui/chromeos/touch_exploration_controller.h" |
+ |
+namespace ash { |
+ |
+CrosAccessibilityObserver::CrosAccessibilityObserver( |
+ RootWindowController* root_window_controller) |
+ : root_window_controller_(root_window_controller), |
+ audio_handler_(chromeos::CrasAudioHandler::Get()) { |
+ Shell::GetInstance()->system_tray_notifier()-> |
+ AddAccessibilityObserver(this); |
+ UpdateTouchExplorationState(); |
+} |
+ |
+CrosAccessibilityObserver::~CrosAccessibilityObserver() { |
+ SystemTrayNotifier* system_tray_notifier = |
+ Shell::GetInstance()->system_tray_notifier(); |
+ if (system_tray_notifier) |
James Cook
2014/07/15 18:21:56
Is this NULL in normal operation, in tests, in bot
|
+ system_tray_notifier->RemoveAccessibilityObserver(this); |
+ |
James Cook
2014/07/15 18:21:57
no blank line
lisayin
2014/07/15 21:46:44
Done.
|
+} |
+ |
+bool CrosAccessibilityObserver::VolumeAdjustSoundEnabled() { |
+ return !CommandLine::ForCurrentProcess()->HasSwitch( |
+ chromeos::switches::kDisableVolumeAdjustSound); |
+} |
+ |
+void const CrosAccessibilityObserver::PlayVolumeAdjustSound() { |
+ if (!VolumeAdjustSoundEnabled()) |
+ return; |
+ if (!audio_handler_->IsOutputMuted() || |
+ !audio_handler_->GetOutputVolumePercent() == 100) |
+ PlaySystemSoundIfSpokenFeedback(chromeos::SOUND_VOLUME_ADJUST); |
+} |
+ |
+void CrosAccessibilityObserver::AdjustSound(float volume) { |
James Cook
2014/07/15 18:21:56
Please add a unit test for this functionality. (In
|
+ if (volume > 0) { |
+ if (audio_handler_->IsOutputMuted()) { |
+ audio_handler_->SetOutputMute(false); |
+ } |
+ } |
+ audio_handler_->SetOutputVolumePercent(volume); |
+ // Avoid negative volume. |
+ if (audio_handler_->IsOutputVolumeBelowDefaultMuteLevel()) |
+ audio_handler_->SetOutputMute(true); |
+} |
+ |
+void CrosAccessibilityObserver::UpdateTouchExplorationState() { |
+ AccessibilityDelegate* delegate = |
+ Shell::GetInstance()->accessibility_delegate(); |
+ bool enabled = delegate->IsSpokenFeedbackEnabled(); |
+ |
+ if (enabled && !touch_exploration_controller_.get()) { |
+ touch_exploration_controller_.reset(new ui::TouchExplorationController( |
+ root_window_controller_->GetRootWindow(), this)); |
+ } else if (!enabled) { |
+ touch_exploration_controller_.reset(); |
+ } |
+} |
+ |
+// Overridden from AccessibilityObserver. |
+void CrosAccessibilityObserver::OnAccessibilityModeChanged( |
+ AccessibilityNotificationVisibility notify) { |
+ UpdateTouchExplorationState(); |
+} |
+ |
+} // namespace ash |