| // Copyright 2016 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 SERVICES_UI_WS_USER_DISPLAY_MANAGER_H_ |
| #define SERVICES_UI_WS_USER_DISPLAY_MANAGER_H_ |
| |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "mojo/public/cpp/bindings/binding_set.h" |
| #include "mojo/public/cpp/bindings/interface_ptr_set.h" |
| #include "services/ui/public/interfaces/screen_provider.mojom.h" |
| |
| namespace display { |
| class Display; |
| } |
| |
| namespace ui { |
| namespace ws { |
| |
| class UserDisplayManagerDelegate; |
| |
| // Provides per user display state. |
| // TODO(sky): merge this with ui::ws::DisplayManager (and rename). |
| class UserDisplayManager : public mojom::ScreenProvider { |
| public: |
| UserDisplayManager(UserDisplayManagerDelegate* delegate); |
| ~UserDisplayManager() override; |
| |
| void DisableAutomaticNotification(); |
| |
| // Unconditionally calls OnDisplayChanged() on observers. |
| void CallOnDisplaysChanged(); |
| |
| // Called when the frame decorations for this user change. |
| void OnFrameDecorationValuesChanged(); |
| |
| void AddDisplayManagerBinding( |
| mojo::InterfaceRequest<mojom::ScreenProvider> request); |
| |
| // Called when something about the display (e.g. pixel-ratio, size) changes. |
| void OnDisplayUpdated(const display::Display& display); |
| |
| // Called when the display with |display_id| was removed. |
| void OnDisplayDestroyed(int64_t display_id); |
| |
| // Called when the primary display changes. |
| void OnPrimaryDisplayChanged(int64_t primary_display_id); |
| |
| // mojom::ScreenProvider: |
| void AddObserver(mojom::ScreenProviderObserverPtr observer) override; |
| |
| private: |
| // Called when a new observer is added. If frame decorations are available |
| // notifies the observer immediately. |
| void OnObserverAdded(mojom::ScreenProviderObserver* observer); |
| |
| // Fills in a WsDisplayPtr for |display|. |
| mojom::WsDisplayPtr ToWsDisplayPtr(const display::Display& display); |
| |
| std::vector<mojom::WsDisplayPtr> GetAllDisplays(); |
| |
| bool ShouldCallOnDisplaysChanged() const; |
| |
| // Calls OnDisplaysChanged() on all observers. |
| void CallOnDisplaysChangedIfNecessary(); |
| |
| // Calls OnDisplaysChanged() on |observer|. |
| void CallOnDisplaysChanged(mojom::ScreenProviderObserver* observer); |
| |
| UserDisplayManagerDelegate* delegate_; |
| |
| // Set to true the first time at least one Display has valid frame values. |
| bool got_valid_frame_decorations_; |
| |
| mojo::BindingSet<mojom::ScreenProvider> bindings_; |
| |
| // WARNING: only use these once |got_valid_frame_decorations_| is true. |
| mojo::InterfacePtrSet<mojom::ScreenProviderObserver> observers_; |
| |
| // If true DisplayManagerObservers are notified any time there is a display |
| // change. If false, observers are only notified when CallOnDisplaysChanged() |
| // is explicitly called. This value is true in automatic display creation and |
| // false when in manual mode. |
| bool notify_automatically_ = true; |
| |
| DISALLOW_COPY_AND_ASSIGN(UserDisplayManager); |
| }; |
| |
| } // namespace ws |
| } // namespace ui |
| |
| #endif // SERVICES_UI_WS_USER_DISPLAY_MANAGER_H_ |