fluffychat/windows/runner/flutter_window.cpp

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#include "flutter_window.h"
#include <optional>
#include "flutter/generated_plugin_registrant.h"
FlutterWindow::FlutterWindow(RunLoop* run_loop,
const flutter::DartProject& project)
: run_loop_(run_loop), project_(project) {}
FlutterWindow::~FlutterWindow() {}
bool FlutterWindow::OnCreate() {
if (!Win32Window::OnCreate()) {
return false;
}
RECT frame = GetClientArea();
// The size here must match the window dimensions to avoid unnecessary surface
// creation / destruction in the startup path.
flutter_controller_ = std::make_unique<flutter::FlutterViewController>(
frame.right - frame.left, frame.bottom - frame.top, project_);
// Ensure that basic setup of the controller was successful.
if (!flutter_controller_->engine() || !flutter_controller_->view()) {
return false;
}
RegisterPlugins(flutter_controller_->engine());
run_loop_->RegisterFlutterInstance(flutter_controller_->engine());
SetChildContent(flutter_controller_->view()->GetNativeWindow());
return true;
}
void FlutterWindow::OnDestroy() {
if (flutter_controller_) {
run_loop_->UnregisterFlutterInstance(flutter_controller_->engine());
flutter_controller_ = nullptr;
}
Win32Window::OnDestroy();
}
LRESULT
FlutterWindow::MessageHandler(HWND hwnd, UINT const message,
WPARAM const wparam,
LPARAM const lparam) noexcept {
// Give Flutter, including plugins, an opporutunity to handle window messages.
if (flutter_controller_) {
std::optional<LRESULT> result =
flutter_controller_->HandleTopLevelWindowProc(hwnd, message, wparam,
lparam);
if (result) {
return *result;
}
}
switch (message) {
case WM_FONTCHANGE:
flutter_controller_->engine()->ReloadSystemFonts();
break;
}
return Win32Window::MessageHandler(hwnd, message, wparam, lparam);
}