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    41 

    42 #include <QtGui>

    43 

    44 void createCurveIcons();

    45 

    46 int main(int argc, char **argv)

    47 {

    48     QApplication app(argc, argv);

    49     createCurveIcons();

    50     return app.exit();

    51 }

    52 

    53 void createCurveIcons()

    54 {

    55     QDir dir(QDir::current());

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

    57         dir.cdUp();

    58     }

    59     dir.cdUp();

    60     dir.cdUp();

    61     dir.cdUp();

    62     QSize iconSize(128, 128);

    63     QPixmap pix(iconSize);

    64     QPainter painter(&pix);

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

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

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

    68     QBrush brush(gradient);

    69     const QMetaObject &mo = QEasingCurve::staticMetaObject;

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

    71     QFont oldFont = painter.font();

    72     // Skip QEasingCurve::Custom

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

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

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

    76         painter.setFont(oldFont);

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

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

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

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

    81         qreal xAxis = iconSize.height()/1.5;

    82         qreal yAxis = iconSize.width()/3;

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

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

    85 

    86         qreal curveScale = iconSize.height()/2;

    87 

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

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

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

    91 

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

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

    94 

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

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

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

    98 

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

   100 

   101         painter.setPen(Qt::black);

   102         QFont font = oldFont;

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

   104         painter.setFont(font);

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

   106 

   107         QPainterPath curvePath;

   108         curvePath.moveTo(start);

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

   110             QPoint to;

   111             to.setX(yAxis + curveScale * t);

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

   113             curvePath.lineTo(to);

   114         }

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

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

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

   118 

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

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

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

   122     }

   123 }

   124 

   125