45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
#ifndef RUNNER_FLUTTER_WINDOW_H_
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#define RUNNER_FLUTTER_WINDOW_H_
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#include <flutter/dart_project.h>
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#include <flutter/flutter_view_controller.h>
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#include <flutter/method_channel.h>
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#include <flutter/standard_method_codec.h>
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#include <memory>
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#include "win32_window.h"
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// A window that does nothing but host a Flutter view.
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class FlutterWindow : public Win32Window {
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public:
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// Creates a new FlutterWindow hosting a Flutter view running |project|.
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explicit FlutterWindow(const flutter::DartProject& project);
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virtual ~FlutterWindow();
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protected:
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// Win32Window:
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bool OnCreate() override;
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void OnDestroy() override;
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LRESULT MessageHandler(HWND window, UINT const message, WPARAM const wparam,
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LPARAM const lparam) noexcept override;
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private:
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// 按给定的视频宽高比（宽/高）调整窗口：保持窗口宽度不变，
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// 高度按比例计算；若高度超出屏幕工作区，则以屏幕高度为准
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// 反推出合适的窗口宽高。
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void ResizeToVideoAspect(double aspect);
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// The project to run.
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flutter::DartProject project_;
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// The Flutter instance hosted by this window.
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std::unique_ptr<flutter::FlutterViewController> flutter_controller_;
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// 与 Dart 层通信的窗口控制通道。
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std::unique_ptr<flutter::MethodChannel<flutter::EncodableValue>>
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window_channel_;
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};
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#endif // RUNNER_FLUTTER_WINDOW_H_
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