forked from hesabix/arc
101 lines
3 KiB
C++
Executable file
101 lines
3 KiB
C++
Executable file
#include "flutter_window.h"
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#include <optional>
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#include "flutter/generated_plugin_registrant.h"
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FlutterWindow::FlutterWindow(const flutter::DartProject& project)
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: project_(project) {}
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FlutterWindow::~FlutterWindow() {}
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bool FlutterWindow::OnCreate() {
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if (!Win32Window::OnCreate()) {
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return false;
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}
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RECT frame = GetClientArea();
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// The size here must match the window dimensions to avoid unnecessary surface
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// creation / destruction in the startup path.
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flutter_controller_ = std::make_unique<flutter::FlutterViewController>(
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frame.right - frame.left, frame.bottom - frame.top, project_);
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// Ensure that basic setup of the controller was successful.
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if (!flutter_controller_->engine() || !flutter_controller_->view()) {
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return false;
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}
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RegisterPlugins(flutter_controller_->engine());
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SetupCloseChannel();
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SetChildContent(flutter_controller_->view()->GetNativeWindow());
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flutter_controller_->engine()->SetNextFrameCallback([&]() {
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this->Show();
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});
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// Flutter can complete the first frame before the "show window" callback is
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// registered. The following call ensures a frame is pending to ensure the
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// window is shown. It is a no-op if the first frame hasn't completed yet.
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flutter_controller_->ForceRedraw();
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return true;
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}
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void FlutterWindow::OnDestroy() {
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if (flutter_controller_) {
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flutter_controller_ = nullptr;
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}
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close_channel_ = nullptr;
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Win32Window::OnDestroy();
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}
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void FlutterWindow::SetupCloseChannel() {
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close_channel_ =
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std::make_unique<flutter::MethodChannel<flutter::EncodableValue>>(
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flutter_controller_->engine()->messenger(), "hesabix/window_close",
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&flutter::StandardMethodCodec::GetInstance());
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close_channel_->SetMethodCallHandler(
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[this](const flutter::MethodCall<flutter::EncodableValue>& call,
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std::unique_ptr<flutter::MethodResult<flutter::EncodableValue>>
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result) {
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if (call.method_name().compare("close") == 0) {
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HWND hwnd = GetHandle();
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if (hwnd != nullptr) {
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DestroyWindow(hwnd);
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}
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result->Success();
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return;
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}
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result->NotImplemented();
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});
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}
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LRESULT
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FlutterWindow::MessageHandler(HWND hwnd, UINT const message,
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WPARAM const wparam,
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LPARAM const lparam) noexcept {
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// Give Flutter, including plugins, an opportunity to handle window messages.
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if (flutter_controller_) {
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std::optional<LRESULT> result =
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flutter_controller_->HandleTopLevelWindowProc(hwnd, message, wparam,
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lparam);
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if (result) {
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return *result;
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}
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}
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switch (message) {
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case WM_CLOSE:
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if (close_channel_) {
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close_channel_->InvokeMethod("requestClose", nullptr);
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return 0;
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}
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break;
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case WM_FONTCHANGE:
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flutter_controller_->engine()->ReloadSystemFonts();
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break;
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}
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return Win32Window::MessageHandler(hwnd, message, wparam, lparam);
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}
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