| // Copyright 2022 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef ASH_CURTAIN_SECURITY_CURTAIN_WIDGET_CONTROLLER_H_ |
| #define ASH_CURTAIN_SECURITY_CURTAIN_WIDGET_CONTROLLER_H_ |
| |
| #include <cstdint> |
| #include <memory> |
| |
| #include "ash/ash_export.h" |
| #include "ash/curtain/security_curtain_controller.h" |
| #include "ui/aura/window_occlusion_tracker.h" |
| |
| namespace aura { |
| class Window; |
| } // namespace aura |
| |
| namespace views { |
| class View; |
| class Widget; |
| } // namespace views |
| |
| namespace ui { |
| class Layer; |
| } // namespace ui |
| |
| namespace ash::curtain { |
| |
| class InputEventFilter; |
| |
| // Displays a curtain widget over a single display, which will cover all other |
| // content, preventing local users and passerby's from observing the display. |
| // Owns the widget. |
| class ASH_EXPORT SecurityCurtainWidgetController { |
| public: |
| SecurityCurtainWidgetController(SecurityCurtainWidgetController&&); |
| SecurityCurtainWidgetController& operator=(SecurityCurtainWidgetController&&); |
| ~SecurityCurtainWidgetController(); |
| |
| // Creates a new curtain overlay. |
| static SecurityCurtainWidgetController CreateForRootWindow( |
| aura::Window* curtain_container, |
| EventFilter event_filter, |
| std::unique_ptr<views::View> curtain_view); |
| |
| const views::Widget& GetWidget() const; |
| views::Widget& GetWidget(); |
| |
| private: |
| class WidgetMaximizer; |
| |
| using Layers = std::vector<std::unique_ptr<ui::Layer>>; |
| SecurityCurtainWidgetController( |
| std::unique_ptr<views::Widget> widget, |
| Layers layers, |
| std::unique_ptr<InputEventFilter> event_filter); |
| |
| Layers widget_layers_; |
| std::unique_ptr<views::Widget> widget_; |
| // The curtain widget should not occlude any other windows, otherwise they |
| // might not be rendered (which will be a problem when streaming the |
| // uncurtained desktop for example through Chrome Remote Desktop). |
| std::unique_ptr<aura::WindowOcclusionTracker::ScopedExclude> |
| occlusion_tracker_exclude_; |
| |
| // Ensures the widget is always maximized, even when the display is resized. |
| std::unique_ptr<WidgetMaximizer> widget_maximizer_; |
| |
| // Ensures local input events are filtered out. |
| std::unique_ptr<InputEventFilter> input_event_filter_; |
| }; |
| |
| } // namespace ash::curtain |
| |
| #endif // ASH_CURTAIN_SECURITY_CURTAIN_WIDGET_CONTROLLER_H_ |