blob: 643a1c3cad4f0040452915a12546132f9e5e65b6 [file] [log] [blame] [edit]
// Copyright 2014 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.
#include "flutter_window.h"
#include <WinUser.h>
#include <flutter/flutter_engine.h>
#include <flutter/method_channel.h>
#include <flutter/plugin_registrar_windows.h>
#include <flutter/standard_method_codec.h>
#include <cstdint>
#include <memory>
#include <optional>
#include <string>
#include "flutter/generated_plugin_registrant.h"
void RegisterMethodChannel(flutter::FlutterEngine* engine) {
FlutterDesktopPluginRegistrarRef plugin_registrar_ref =
engine->GetRegistrarForPlugin("platform_view");
flutter::PluginRegistrarWindows* registrar =
flutter::PluginRegistrarManager::GetInstance()
->GetRegistrar<flutter::PluginRegistrarWindows>(plugin_registrar_ref);
auto channel =
std::make_unique<flutter::MethodChannel<flutter::EncodableValue>>(
registrar->messenger(), "samples.flutter.io/platform_view",
&flutter::StandardMethodCodec::GetInstance());
channel->SetMethodCallHandler([](const auto& call, auto result) {
int counter = std::get<int32_t>(*call.arguments());
std::string msg = std::string("Pressed the button ") +
std::to_string(counter) + " times!";
MessageBoxA(NULL, msg.c_str(), "Popup", MB_OK);
result->Success(flutter::EncodableValue(counter));
});
}
FlutterWindow::FlutterWindow(const flutter::DartProject& project)
: 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());
RegisterMethodChannel(flutter_controller_->engine());
SetChildContent(flutter_controller_->view()->GetNativeWindow());
return true;
}
void FlutterWindow::OnDestroy() {
if (flutter_controller_) {
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 opportunity 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);
}