| // 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. |
| |
| #ifndef ASH_TOUCH_EXPLORATION_MANAGER_CHROMEOS_H_ |
| #define ASH_TOUCH_EXPLORATION_MANAGER_CHROMEOS_H_ |
| |
| #include <memory> |
| |
| #include "ash/ash_export.h" |
| #include "ash/common/system/accessibility_observer.h" |
| #include "base/macros.h" |
| #include "ui/chromeos/touch_exploration_controller.h" |
| #include "ui/display/display_observer.h" |
| #include "ui/wm/public/activation_change_observer.h" |
| |
| namespace chromeos { |
| class CrasAudioHandler; |
| } |
| |
| namespace ash { |
| class RootWindowController; |
| |
| // Responsible for initializing TouchExplorationController when spoken |
| // feedback is on for ChromeOS only. This class implements |
| // TouchExplorationControllerDelegate which allows touch gestures to manipulate |
| // the system. |
| class ASH_EXPORT AshTouchExplorationManager |
| : public AccessibilityObserver, |
| public ui::TouchExplorationControllerDelegate, |
| public display::DisplayObserver, |
| public aura::client::ActivationChangeObserver { |
| public: |
| explicit AshTouchExplorationManager( |
| RootWindowController* root_window_controller); |
| ~AshTouchExplorationManager() override; |
| |
| // AccessibilityObserver overrides: |
| void OnAccessibilityModeChanged( |
| AccessibilityNotificationVisibility notify) override; |
| |
| // TouchExplorationControllerDelegate overrides: |
| void SetOutputLevel(int volume) override; |
| void SilenceSpokenFeedback() override; |
| void PlayVolumeAdjustEarcon() override; |
| void PlayPassthroughEarcon() override; |
| void PlayExitScreenEarcon() override; |
| void PlayEnterScreenEarcon() override; |
| void HandleAccessibilityGesture(ui::AXGesture gesture) override; |
| |
| // display::DisplayObserver overrides: |
| void OnDisplayMetricsChanged(const display::Display& display, |
| uint32_t changed_metrics) override; |
| |
| // aura::client::ActivationChangeObserver overrides: |
| void OnWindowActivated( |
| aura::client::ActivationChangeObserver::ActivationReason reason, |
| aura::Window* gained_active, |
| aura::Window* lost_active) override; |
| |
| // Update the touch exploration controller so that synthesized touch |
| // events are anchored at this point. |
| void SetTouchAccessibilityAnchorPoint(const gfx::Point& anchor_point); |
| |
| private: |
| void UpdateTouchExplorationState(); |
| bool VolumeAdjustSoundEnabled(); |
| |
| std::unique_ptr<ui::TouchExplorationController> touch_exploration_controller_; |
| RootWindowController* root_window_controller_; |
| chromeos::CrasAudioHandler* audio_handler_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AshTouchExplorationManager); |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_TOUCH_EXPLORATION_MANAGER_CHROMEOS_H_ |