main.cpp

#include "MainWindow.h"

#include <QApplication>
#include <QPainter>
#include <QSplashScreen>
#include <QTextStream>
#include <QTimer>

namespace {
QPixmap makeSplashPixmap() {
    QPixmap pix(520, 320);
    pix.fill(QColor(20, 24, 28));
    QPainter painter(&pix);
    painter.setPen(Qt::white);
    QFont titleFont = painter.font();
    titleFont.setPointSize(28);
    titleFont.setBold(true);
    painter.setFont(titleFont);
    painter.drawText(QRect(0, 70, pix.width(), 60), Qt::AlignHCenter, "DLDViewer");
    QFont subFont = painter.font();
    subFont.setPointSize(12);
    subFont.setBold(false);
    painter.setFont(subFont);
    painter.setPen(QColor(200, 200, 200));
    painter.drawText(QRect(0, 140, pix.width(), 30), Qt::AlignHCenter, "Loading...");
    return pix;
}
} // namespace

int main(int argc, char *argv[]) {
    QString filePath;
    bool bench = false;
    int frames = 200;
    for (int i = 1; i < argc; ++i) {
        QString arg = QString::fromLocal8Bit(argv[i]);
        if (arg == "--file" && i + 1 < argc) {
            filePath = QString::fromLocal8Bit(argv[++i]);
        } else if (arg == "--bench") {
            bench = true;
        } else if (arg == "--frames" && i + 1 < argc) {
            frames = QString::fromLocal8Bit(argv[++i]).toInt();
        }
    }

    QApplication app(argc, argv);

    QSplashScreen splash(makeSplashPixmap());
    splash.showMessage("Starting...", Qt::AlignHCenter | Qt::AlignBottom, Qt::white);
    splash.show();
    app.processEvents();

    MainWindow w;
    w.setSplashScreen(&splash);
    w.resize(1000, 600);
    w.show();
    if (bench) {
        QObject::connect(&w, &MainWindow::benchmarkFinished, &app, [&](double msPerFrame) {
            QTextStream(stdout) << "Benchmark (QPainter) ms/frame: " << msPerFrame << "\n";
            app.quit();
        });
    }
    QTimer::singleShot(0, [&]() {
        if (!filePath.isEmpty()) {
            if (!w.loadFilePath(filePath)) {
                w.finishSplash();
                app.quit();
                return;
            }
        } else {
            w.finishSplash();
        }
        if (bench) {
            QTimer::singleShot(0, [&]() { w.startBenchmark(frames); });
        }
    });

    return app.exec();
}