Method drawBackGround

dialog/screencapture.cpp:96–137

void ScreenCapture::drawBackGround()
{
    // create painter on  pixelmap of desktop
    QPainter painter(&desktopPixmapBkg);

    // set painter brush on 85% transparency
    painter.setBrush(QBrush(QColor(0, 0, 0, 85), Qt::SolidPattern));

    // draw rect of desktop size in poainter
    painter.drawRect(QApplication::desktop()->rect());

    QRect txtRect = QApplication::desktop()->screenGeometry(QApplication::desktop()->primaryScreen());
    QString txtTip = QApplication::tr("Use your mouse to draw a rectangle to screenshot or exit pressing\nany key or using the right or middle mouse buttons.");

    txtRect.setHeight(qRound(txtRect.height() / 10.f)); // rounded val of text rect height

    painter.setPen(QPen(Qt::red)); // ste message rect border color
    painter.setBrush(QBrush(QColor(255, 255, 255, 180), Qt::SolidPattern));
    QRect txtBgRect = painter.boundingRect(txtRect, Qt::AlignCenter, txtTip);

    // set height & width of bkg rect
    txtBgRect.setX(txtBgRect.x() - 6);
    txtBgRect.setY(txtBgRect.y() - 4);
    txtBgRect.setWidth(txtBgRect.width() + 12);
    txtBgRect.setHeight(txtBgRect.height() + 8);

    painter.drawRect(txtBgRect);

      // Draw the text
    painter.setPen(QPen(Qt::black)); // black color pen
    painter.drawText(txtBgRect, Qt::AlignCenter, txtTip);

    palBackground = (qApp->desktop()->numScreens() > 1);

    // set bkg to pallette widget
    if (palBackground)
    {
        QPalette newPalette = palette();
        newPalette.setBrush(QPalette::Window, QBrush(desktopPixmapBkg));
        setPalette(newPalette);
    }
}

void ScreenCapture::drawRectSelection(QPainter &painter)
{