Method paintEvent

src/ckb/gradientdialogwidget.cpp:172–220

}

void GradientDialogWidget::paintEvent(QPaintEvent*){
    QPainter painter(this);
    QRect fill = fillRect();
    int x = fill.x(), y = fill.y(), w = fill.width(), h = fill.height();

    // Draw border around gradient
    painter.setPen(palette().color(QPalette::Dark));
    painter.drawLine(x - 1, y - 1, x + w, y - 1);
    painter.drawLine(x - 1, y - 1, x - 1, y + h);
    painter.setPen(palette().color(QPalette::Light));
    painter.drawLine(x - 1, y + h, x + w, y + h);
    painter.drawLine(x + w, y - 1, x + w, y + h);
    // Draw background grid
    for(int i = 0; i < w; i += 16){
        for(int iy = 0; iy < h; iy += 16){
            if(i % 32 != iy % 32)
                painter.fillRect(x + i, y + iy, 16, 16, QColor(192, 192, 192));
            else
                painter.fillRect(x + i, y + iy, 16, 16, QColor(255, 255, 255));
        }
    }
    // Draw gradient
    painter.setRenderHint(QPainter::Antialiasing);
    QLinearGradient gradient(x, 0, x + w, 0);
    gradient.setStops(_stops);
    painter.fillRect(fill, QBrush(gradient));

    // Draw stops
    QMapIterator<int, QColor> i(_colors);
    painter.setPen(palette().color(QPalette::Shadow));
    while(i.hasNext()){
        i.next();
        painter.setBrush(QBrush(i.value()));
        int index = i.key();
        if(index == _current){
            // Highlight currently-edited stop
            painter.setPen(QPen(palette().color(QPalette::Highlight), 2));
            painter.drawRoundedRect(stopRect(index), 4, 4);
            painter.setPen(palette().color(QPalette::Shadow));
        } else
            painter.drawRoundedRect(stopRect(index), 4, 4);
    }
    // Draw selection (if any)
    if(selected.isValid() && selectedPos >= x && selectedPos <= x + w){
        painter.setPen(QPen(palette().color(QPalette::Highlight), 2.5));
        painter.setBrush(selected);
        painter.drawRoundedRect(selectedPos - 6, height() - 18 - 2, 12, 18, 4, 4);
    }
}

void GradientDialogWidget::mousePressEvent(QMouseEvent* event){
    int x = event->x(), y = event->y();