blob: 7e8343bd234c2fb54ca4aeb788fcf14dac823386 [file] [log] [blame]
// Copyright 2013 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 "include/flutter/flutter_engine.h"
#include <algorithm>
#include <iostream>
namespace flutter {
FlutterEngine::FlutterEngine() {}
FlutterEngine::~FlutterEngine() {}
bool FlutterEngine::Start(const std::string& icu_data_path,
const std::string& assets_path,
const std::vector<std::string>& arguments,
const std::string& aot_library_path) {
if (engine_) {
std::cerr << "Cannot run an already running engine. Create a new instance "
"or call ShutDown first."
<< std::endl;
return false;
}
FlutterDesktopEngineProperties c_engine_properties = {};
c_engine_properties.assets_path = assets_path.c_str();
c_engine_properties.icu_data_path = icu_data_path.c_str();
c_engine_properties.aot_library_path = aot_library_path.c_str();
std::vector<const char*> engine_switches;
std::transform(
arguments.begin(), arguments.end(), std::back_inserter(engine_switches),
[](const std::string& arg) -> const char* { return arg.c_str(); });
if (engine_switches.size() > 0) {
c_engine_properties.switches = &engine_switches[0];
c_engine_properties.switches_count = engine_switches.size();
}
engine_ = UniqueEnginePtr(FlutterDesktopRunEngine(c_engine_properties),
FlutterDesktopShutDownEngine);
if (!engine_) {
std::cerr << "Failed to start engine." << std::endl;
return false;
}
return true;
}
void FlutterEngine::ShutDown() {
engine_ = nullptr;
}
FlutterDesktopPluginRegistrarRef FlutterEngine::GetRegistrarForPlugin(
const std::string& plugin_name) {
if (!engine_) {
std::cerr << "Cannot get plugin registrar on an engine that isn't running; "
"call Run first."
<< std::endl;
return nullptr;
}
return FlutterDesktopGetPluginRegistrar(engine_.get(), plugin_name.c_str());
}
void FlutterEngine::RunEventLoopWithTimeout(std::chrono::milliseconds timeout) {
if (!engine_) {
std::cerr << "Cannot run event loop without a running engine; call "
"Run first."
<< std::endl;
return;
}
uint32_t timeout_milliseconds;
if (timeout == std::chrono::milliseconds::max()) {
// The C API uses 0 to represent no timeout, so convert |max| to 0.
timeout_milliseconds = 0;
} else if (timeout.count() > UINT32_MAX) {
timeout_milliseconds = UINT32_MAX;
} else {
timeout_milliseconds = static_cast<uint32_t>(timeout.count());
}
FlutterDesktopRunEngineEventLoopWithTimeout(engine_.get(),
timeout_milliseconds);
}
} // namespace flutter