blob: 363f6df647f8d8903c4cc9c8ddafa4fca6cbfe2a [file] [log] [blame]
// Copyright 2014 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/aura/wm_root_window_controller_aura.h"
#include "ash/common/accessibility_delegate.h"
#include "ash/common/system/tray/system_tray_notifier.h"
#include "ash/common/wm_shell.h"
#include "ash/common/wm_window.h"
#include "ash/root_window_controller.h"
#include "ash/shell.h"
#include "ash/wm/window_util.h"
#include "base/command_line.h"
#include "chromeos/audio/chromeos_sounds.h"
#include "chromeos/audio/cras_audio_handler.h"
#include "chromeos/chromeos_switches.h"
#include "ui/chromeos/touch_exploration_controller.h"
#include "ui/wm/public/activation_client.h"
namespace ash {
AshTouchExplorationManager::AshTouchExplorationManager(
RootWindowController* root_window_controller)
: root_window_controller_(root_window_controller),
audio_handler_(chromeos::CrasAudioHandler::Get()) {
WmShell::Get()->system_tray_notifier()->AddAccessibilityObserver(this);
Shell::GetInstance()->activation_client()->AddObserver(this);
display::Screen::GetScreen()->AddObserver(this);
UpdateTouchExplorationState();
}
AshTouchExplorationManager::~AshTouchExplorationManager() {
SystemTrayNotifier* system_tray_notifier =
WmShell::Get()->system_tray_notifier();
if (system_tray_notifier)
system_tray_notifier->RemoveAccessibilityObserver(this);
Shell::GetInstance()->activation_client()->RemoveObserver(this);
display::Screen::GetScreen()->RemoveObserver(this);
}
void AshTouchExplorationManager::OnAccessibilityModeChanged(
AccessibilityNotificationVisibility notify) {
UpdateTouchExplorationState();
}
void AshTouchExplorationManager::SetOutputLevel(int volume) {
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 AshTouchExplorationManager::SilenceSpokenFeedback() {
if (WmShell::Get()->accessibility_delegate()->IsSpokenFeedbackEnabled())
WmShell::Get()->accessibility_delegate()->SilenceSpokenFeedback();
}
void AshTouchExplorationManager::PlayVolumeAdjustEarcon() {
if (!VolumeAdjustSoundEnabled())
return;
if (!audio_handler_->IsOutputMuted() &&
audio_handler_->GetOutputVolumePercent() != 100) {
WmShell::Get()->accessibility_delegate()->PlayEarcon(
chromeos::SOUND_VOLUME_ADJUST);
}
}
void AshTouchExplorationManager::PlayPassthroughEarcon() {
WmShell::Get()->accessibility_delegate()->PlayEarcon(
chromeos::SOUND_PASSTHROUGH);
}
void AshTouchExplorationManager::PlayExitScreenEarcon() {
WmShell::Get()->accessibility_delegate()->PlayEarcon(
chromeos::SOUND_EXIT_SCREEN);
}
void AshTouchExplorationManager::PlayEnterScreenEarcon() {
WmShell::Get()->accessibility_delegate()->PlayEarcon(
chromeos::SOUND_ENTER_SCREEN);
}
void AshTouchExplorationManager::HandleAccessibilityGesture(
ui::AXGesture gesture) {
WmShell::Get()->accessibility_delegate()->HandleAccessibilityGesture(gesture);
}
void AshTouchExplorationManager::OnDisplayMetricsChanged(
const display::Display& display,
uint32_t changed_metrics) {
if (root_window_controller_->wm_root_window_controller()
->GetWindow()
->GetDisplayNearestWindow()
.id() == display.id())
UpdateTouchExplorationState();
}
void AshTouchExplorationManager::PlaySpokenFeedbackToggleCountdown(
int tick_count) {
WmShell::Get()->accessibility_delegate()->PlaySpokenFeedbackToggleCountdown(
tick_count);
}
void AshTouchExplorationManager::ToggleSpokenFeedback() {
WmShell::Get()->accessibility_delegate()->ToggleSpokenFeedback(
ash::A11Y_NOTIFICATION_SHOW);
}
void AshTouchExplorationManager::OnWindowActivated(
aura::client::ActivationChangeObserver::ActivationReason reason,
aura::Window* gained_active,
aura::Window* lost_active) {
UpdateTouchExplorationState();
}
void AshTouchExplorationManager::SetTouchAccessibilityAnchorPoint(
const gfx::Point& anchor_point) {
if (touch_exploration_controller_) {
touch_exploration_controller_->SetTouchAccessibilityAnchorPoint(
anchor_point);
}
}
void AshTouchExplorationManager::UpdateTouchExplorationState() {
// Comes from components/exo/shell_surface.cc.
const char kExoShellSurfaceWindowName[] = "ExoShellSurface";
// See crbug.com/603745 for more details.
const bool pass_through_surface =
wm::GetActiveWindow() &&
wm::GetActiveWindow()->name() == kExoShellSurfaceWindowName;
const bool spoken_feedback_enabled =
WmShell::Get()->accessibility_delegate()->IsSpokenFeedbackEnabled();
if (!touch_accessibility_enabler_) {
// Always enable gesture to toggle spoken feedback.
touch_accessibility_enabler_.reset(new ui::TouchAccessibilityEnabler(
root_window_controller_->GetRootWindow(), this));
}
if (spoken_feedback_enabled) {
if (!touch_exploration_controller_.get()) {
touch_exploration_controller_ =
base::MakeUnique<ui::TouchExplorationController>(
root_window_controller_->GetRootWindow(), this,
touch_accessibility_enabler_.get());
}
if (pass_through_surface) {
const gfx::Rect& work_area =
root_window_controller_->wm_root_window_controller()
->GetWindow()
->GetDisplayNearestWindow()
.work_area();
touch_exploration_controller_->SetExcludeBounds(work_area);
SilenceSpokenFeedback();
WmShell::Get()->accessibility_delegate()->ClearFocusHighlight();
} else {
touch_exploration_controller_->SetExcludeBounds(gfx::Rect());
}
} else {
touch_exploration_controller_.reset();
}
}
bool AshTouchExplorationManager::VolumeAdjustSoundEnabled() {
return !base::CommandLine::ForCurrentProcess()->HasSwitch(
chromeos::switches::kDisableVolumeAdjustSound);
}
} // namespace ash