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9eca99b8df
* Add Windows platform view example * Add new tests for Windows desktop * Add Windows platform view * Use const constructors (linux analyze)\ * Fix spelling/format * Clean up code * Remove default case
95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter_window.h"
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#include <WinUser.h>
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#include <flutter/flutter_engine.h>
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#include <flutter/method_channel.h>
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#include <flutter/plugin_registrar_windows.h>
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#include <flutter/standard_method_codec.h>
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#include <cstdint>
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#include <memory>
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#include <optional>
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#include <string>
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#include "flutter/generated_plugin_registrant.h"
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void RegisterMethodChannel(flutter::FlutterEngine* engine) {
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FlutterDesktopPluginRegistrarRef plugin_registrar_ref =
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engine->GetRegistrarForPlugin("platform_view");
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flutter::PluginRegistrarWindows* registrar =
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flutter::PluginRegistrarManager::GetInstance()
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->GetRegistrar<flutter::PluginRegistrarWindows>(plugin_registrar_ref);
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auto channel =
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std::make_unique<flutter::MethodChannel<flutter::EncodableValue>>(
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registrar->messenger(), "samples.flutter.io/platform_view",
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&flutter::StandardMethodCodec::GetInstance());
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channel->SetMethodCallHandler([](const auto& call, auto result) {
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int counter = std::get<int32_t>(*call.arguments());
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std::string msg = std::string("Pressed the button ") +
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std::to_string(counter) + " times!";
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MessageBoxA(NULL, msg.c_str(), "Popup", MB_OK);
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result->Success(flutter::EncodableValue(counter));
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});
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}
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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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RegisterMethodChannel(flutter_controller_->engine());
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SetChildContent(flutter_controller_->view()->GetNativeWindow());
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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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Win32Window::OnDestroy();
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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_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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