| // Copyright 2013 The Flutter 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 FLUTTER_SHELL_PLATFORM_WINDOWS_CLIENT_WRAPPER_INCLUDE_FLUTTER_FLUTTER_VIEW_CONTROLLER_H_ |
| #define FLUTTER_SHELL_PLATFORM_WINDOWS_CLIENT_WRAPPER_INCLUDE_FLUTTER_FLUTTER_VIEW_CONTROLLER_H_ |
| |
| #include <flutter_windows.h> |
| #include <windows.h> |
| |
| #include <memory> |
| #include <optional> |
| |
| #include "dart_project.h" |
| #include "flutter_engine.h" |
| #include "flutter_view.h" |
| #include "plugin_registrar.h" |
| #include "plugin_registry.h" |
| |
| namespace flutter { |
| |
| // A controller for a view displaying Flutter content. |
| // |
| // This is the primary wrapper class for the desktop C API. |
| // If you use this class, you should not call any of the setup or teardown |
| // methods in the C API directly, as this class will do that internally. |
| class FlutterViewController { |
| public: |
| // Creates a FlutterView that can be parented into a Windows View hierarchy |
| // either using HWNDs or in the future into a CoreWindow, or using compositor. |
| // |
| // |dart_project| will be used to configure the engine backing this view. |
| explicit FlutterViewController(int width, |
| int height, |
| const DartProject& project); |
| |
| virtual ~FlutterViewController(); |
| |
| // Prevent copying. |
| FlutterViewController(FlutterViewController const&) = delete; |
| FlutterViewController& operator=(FlutterViewController const&) = delete; |
| |
| // Returns the engine running Flutter content in this view. |
| FlutterEngine* engine() { return engine_.get(); } |
| |
| // Returns the view managed by this controller. |
| FlutterView* view() { return view_.get(); } |
| |
| // Allows the Flutter engine and any interested plugins an opportunity to |
| // handle the given message. |
| // |
| // If a result is returned, then the message was handled in such a way that |
| // further handling should not be done. |
| std::optional<LRESULT> HandleTopLevelWindowProc(HWND hwnd, |
| UINT message, |
| WPARAM wparam, |
| LPARAM lparam); |
| |
| private: |
| // Handle for interacting with the C API's view controller, if any. |
| FlutterDesktopViewControllerRef controller_ = nullptr; |
| |
| // The backing engine |
| std::unique_ptr<FlutterEngine> engine_; |
| |
| // The owned FlutterView. |
| std::unique_ptr<FlutterView> view_; |
| }; |
| |
| } // namespace flutter |
| |
| #endif // FLUTTER_SHELL_PLATFORM_WINDOWS_CLIENT_WRAPPER_INCLUDE_FLUTTER_FLUTTER_VIEW_CONTROLLER_H_ |