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#include <QtGui>

void createCurveIcons();

int main(int argc, char **argv)

{

    QApplication app(argc, argv);

    createCurveIcons();

    return app.exit();

}

void createCurveIcons()

{

    QDir dir(QDir::current());

    if (dir.dirName() == QLatin1String("debug") || dir.dirName() == QLatin1String("release")) {

        dir.cdUp();

    }

    dir.cdUp();

    dir.cdUp();

    dir.cdUp();

    QSize iconSize(128, 128);

    QPixmap pix(iconSize);

    QPainter painter(&pix);

    QLinearGradient gradient(0,0, 0, iconSize.height());

    gradient.setColorAt(0.0, QColor(240, 240, 240));

    gradient.setColorAt(1.0, QColor(224, 224, 224));

    QBrush brush(gradient);

    const QMetaObject &mo = QEasingCurve::staticMetaObject;

    QMetaEnum metaEnum = mo.enumerator(mo.indexOfEnumerator("Type"));

    QFont oldFont = painter.font();

    // Skip QEasingCurve::Custom

    QString output(QString::fromAscii("%1/images").arg(dir.absolutePath()));

    printf("Generating images to %s\n", qPrintable(output));

    for (int i = 0; i < QEasingCurve::NCurveTypes - 1; ++i) {

        painter.setFont(oldFont);

        QString name(QLatin1String(metaEnum.key(i)));

        painter.fillRect(QRect(QPoint(0, 0), iconSize), brush);

        QEasingCurve curve((QEasingCurve::Type)i);

        painter.setPen(QColor(0, 0, 255, 64));

        qreal xAxis = iconSize.height()/1.5;

        qreal yAxis = iconSize.width()/3;

        painter.drawLine(0, xAxis, iconSize.width(),  xAxis); // hor

        painter.drawLine(yAxis, 0, yAxis, iconSize.height()); // ver

        qreal curveScale = iconSize.height()/2;

        painter.drawLine(yAxis - 2, xAxis - curveScale, yAxis + 2, xAxis - curveScale); // hor

        painter.drawLine(yAxis + curveScale, xAxis + 2, yAxis + curveScale, xAxis - 2); // ver

        painter.drawText(yAxis + curveScale - 8, xAxis - curveScale - 4, QLatin1String("(1,1)"));

        painter.drawText(yAxis + 42, xAxis + 10, QLatin1String("progress"));

        painter.drawText(15, xAxis - curveScale - 10, QLatin1String("value"));

        painter.setPen(QPen(Qt::red, 1, Qt::DotLine));

        painter.drawLine(yAxis, xAxis - curveScale, yAxis + curveScale, xAxis - curveScale); // hor

        painter.drawLine(yAxis + curveScale, xAxis, yAxis + curveScale, xAxis - curveScale); // ver

        QPoint start(yAxis, xAxis - curveScale * curve.valueForProgress(0));

        painter.setPen(Qt::black);

        QFont font = oldFont;

        font.setPixelSize(oldFont.pixelSize() + 15);

        painter.setFont(font);

        painter.drawText(0, iconSize.height() - 20, iconSize.width(), 20, Qt::AlignHCenter, name);

        QPainterPath curvePath;

        curvePath.moveTo(start);

        for (qreal t = 0; t <= 1.0; t+=1.0/curveScale) {

            QPoint to;

            to.setX(yAxis + curveScale * t);

            to.setY(xAxis - curveScale * curve.valueForProgress(t));

            curvePath.lineTo(to);

        }

        painter.setRenderHint(QPainter::Antialiasing, true);

        painter.strokePath(curvePath, QColor(32, 32, 32));

        painter.setRenderHint(QPainter::Antialiasing, false);

        QString fileName(QString::fromAscii("qeasingcurve-%1.png").arg(name.toLower()));

        printf("%s\n", qPrintable(fileName));

        pix.save(QString::fromAscii("%1/%2").arg(output).arg(fileName), "PNG");

    }

}