685e9d1e47
Adds initial support for flutter create of apps and plugins. This is derived from the current FDE example app and sample plugin, adding template values where relevant. Since the APIs/tooling/template aren't stable yet, the app template includes a version marker, which will be updated each time there's a breaking change. The build now checks that the template version matches the version known by that version of the tool, and gives a specific error message when there's a mismatch, which improves over the current breaking change experience of hitting whatever build failure the breaking change causes and having to figure out that the problem is that the runner is out of date. It also adds a warning to the create output about the fact that it won't be stable. Plugins don't currently have a version marker since in practice this is not a significant problem for plugins yet the way it is for runners; we can add it later if that changes. Fixes #30704
101 lines
3.5 KiB
C++
101 lines
3.5 KiB
C++
#include <flutter/flutter_view_controller.h>
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#include <windows.h>
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#include <chrono>
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#include <codecvt>
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#include <iostream>
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#include <string>
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#include <vector>
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#include "flutter/generated_plugin_registrant.h"
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#include "win32_window.h"
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#include "window_configuration.h"
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namespace {
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// Returns the path of the directory containing this executable, or an empty
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// string if the directory cannot be found.
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std::string GetExecutableDirectory() {
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wchar_t buffer[MAX_PATH];
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if (GetModuleFileName(nullptr, buffer, MAX_PATH) == 0) {
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std::cerr << "Couldn't locate executable" << std::endl;
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return "";
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}
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std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> wide_to_utf8;
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std::string executable_path = wide_to_utf8.to_bytes(buffer);
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size_t last_separator_position = executable_path.find_last_of('\\');
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if (last_separator_position == std::string::npos) {
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std::cerr << "Unabled to find parent directory of " << executable_path
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<< std::endl;
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return "";
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}
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return executable_path.substr(0, last_separator_position);
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}
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} // namespace
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int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,
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_In_ wchar_t *command_line, _In_ int show_command) {
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// Attach to console when present (e.g., 'flutter run') or create a
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// new console when running with a debugger.
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if (!::AttachConsole(ATTACH_PARENT_PROCESS) && ::IsDebuggerPresent()) {
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::AllocConsole();
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}
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// Resources are located relative to the executable.
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std::string base_directory = GetExecutableDirectory();
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if (base_directory.empty()) {
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base_directory = ".";
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}
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std::string data_directory = base_directory + "\\data";
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std::string assets_path = data_directory + "\\flutter_assets";
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std::string icu_data_path = data_directory + "\\icudtl.dat";
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// Arguments for the Flutter Engine.
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std::vector<std::string> arguments;
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// Top-level window frame.
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Win32Window::Point origin(kFlutterWindowOriginX, kFlutterWindowOriginY);
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Win32Window::Size size(kFlutterWindowWidth, kFlutterWindowHeight);
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flutter::FlutterViewController flutter_controller(
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icu_data_path, size.width, size.height, assets_path, arguments);
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RegisterPlugins(&flutter_controller);
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// Create a top-level win32 window to host the Flutter view.
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Win32Window window;
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if (!window.CreateAndShow(kFlutterWindowTitle, origin, size)) {
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return EXIT_FAILURE;
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}
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// Parent and resize Flutter view into top-level window.
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window.SetChildContent(flutter_controller.view()->GetNativeWindow());
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// Run messageloop with a hook for flutter_controller to do work until
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// the window is closed.
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std::chrono::nanoseconds wait_duration(0);
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// Run until the window is closed.
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while (window.GetHandle() != nullptr) {
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MsgWaitForMultipleObjects(0, nullptr, FALSE,
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static_cast<DWORD>(wait_duration.count() / 1000),
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QS_ALLINPUT);
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MSG message;
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// All pending Windows messages must be processed; MsgWaitForMultipleObjects
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// won't return again for items left in the queue after PeekMessage.
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while (PeekMessage(&message, nullptr, 0, 0, PM_REMOVE)) {
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if (message.message == WM_QUIT) {
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window.Destroy();
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break;
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}
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TranslateMessage(&message);
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DispatchMessage(&message);
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}
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// Allow Flutter to process its messages.
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// TODO: Consider interleaving processing on a per-message basis to avoid
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// the possibility of one queue starving the other.
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wait_duration = flutter_controller.ProcessMessages();
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}
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return EXIT_SUCCESS;
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}
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