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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <QtWidgets/QtWidgets>
#include <iostream>
#include <sstream>
#include <emscripten/bind.h>
#include <emscripten/val.h>
#include <emscripten.h>
#include <QtGui/qpa/qplatformscreen.h>
namespace {
constexpr int ExitValueImmediateReturn = 42;
constexpr int ExitValueFromExitApp = 22;
std::string screenInformation()
{
auto screens = qGuiApp->screens();
std::ostringstream out;
out << "[";
const char *separator = "";
for (const auto &screen : screens) {
out << separator;
out << "[" << std::to_string(screen->geometry().x()) << ","
<< std::to_string(screen->geometry().y()) << ","
<< std::to_string(screen->geometry().width()) << ","
<< std::to_string(screen->geometry().height()) << "]";
separator = ",";
}
out << "]";
return out.str();
}
std::string logicalDpi()
{
auto screens = qGuiApp->screens();
std::ostringstream out;
out << "[";
const char *separator = "";
for (const auto &screen : screens) {
out << separator;
out << "[" << std::to_string(screen->handle()->logicalDpi().first) << ", "
<< std::to_string(screen->handle()->logicalDpi().second) << "]";
separator = ",";
}
out << "]";
return out.str();
}
std::string preloadedFiles()
{
QStringList files = QDir("/preload").entryList(QDir::Files);
std::ostringstream out;
out << "[";
const char *separator = "";
for (const auto &file : files) {
out << separator;
out << file.toStdString();
separator = ",";
}
out << "]";
return out.str();
}
void crash()
{
std::abort();
}
void stackOverflow()
{
stackOverflow(); // should eventually termniate with exception
}
void exitApp()
{
emscripten_force_exit(ExitValueFromExitApp);
}
void produceOutput()
{
fprintf(stdout, "Sample output!\n");
}
std::string retrieveArguments()
{
auto arguments = QApplication::arguments();
std::ostringstream out;
out << "[";
const char *separator = "";
for (const auto &argument : arguments) {
out << separator;
out << "'" << argument.toStdString() << "'";
separator = ",";
}
out << "]";
return out.str();
}
std::string getEnvironmentVariable(std::string name) {
return QString::fromLatin1(qgetenv(name.c_str())).toStdString();
}
} // namespace
class AppWindow : public QObject
{
Q_OBJECT
public:
AppWindow() : m_layout(new QVBoxLayout(&m_ui))
{
addWidget<QLabel>("Qt Loader integration tests");
m_ui.setLayout(m_layout);
}
void show() { m_ui.show(); }
~AppWindow() = default;
private:
template<class T, class... Args>
T *addWidget(Args... args)
{
T *widget = new T(std::forward<Args>(args)..., &m_ui);
m_layout->addWidget(widget);
return widget;
}
QWidget m_ui;
QVBoxLayout *m_layout;
};
int main(int argc, char **argv)
{
QApplication application(argc, argv);
const auto arguments = application.arguments();
const bool exitImmediately =
std::find(arguments.begin(), arguments.end(), QStringLiteral("--exit-immediately"))
!= arguments.end();
if (exitImmediately)
emscripten_force_exit(ExitValueImmediateReturn);
const bool crashImmediately =
std::find(arguments.begin(), arguments.end(), QStringLiteral("--crash-immediately"))
!= arguments.end();
if (crashImmediately)
crash();
const bool stackOverflowImmediately =
std::find(arguments.begin(), arguments.end(), QStringLiteral("--stack-owerflow-immediately"))
!= arguments.end();
if (stackOverflowImmediately)
stackOverflow();
const bool noGui = std::find(arguments.begin(), arguments.end(), QStringLiteral("--no-gui"))
!= arguments.end();
if (!noGui) {
AppWindow window;
window.show();
return application.exec();
}
return application.exec();
}
EMSCRIPTEN_BINDINGS(qtLoaderIntegrationTest)
{
emscripten::constant("EXIT_VALUE_IMMEDIATE_RETURN", ExitValueImmediateReturn);
emscripten::constant("EXIT_VALUE_FROM_EXIT_APP", ExitValueFromExitApp);
emscripten::function("screenInformation", &screenInformation);
emscripten::function("logicalDpi", &logicalDpi);
emscripten::function("preloadedFiles", &preloadedFiles);
emscripten::function("crash", &crash);
emscripten::function("exitApp", &exitApp);
emscripten::function("produceOutput", &produceOutput);
emscripten::function("retrieveArguments", &retrieveArguments);
emscripten::function("getEnvironmentVariable", &getEnvironmentVariable);
}
#include "main.moc"
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