void ColorPicker::updatePosition()
{
QPoint pos = QCursor::pos();
QScreen *screen = findScreenAt(pos);
if (!screen) {
qWarning() << "Could not find a screen containing" << pos;
return;
}
QRect desktopRect = screen->geometry();
QPoint newPos;
if (pos.x() + GRAB_SIZE + width() < desktopRect.width()) {
newPos.setX(pos.x() + GRAB_SIZE);
} else {
newPos.setX(pos.x() - GRAB_SIZE - width());
}
if (pos.y() + GRAB_SIZE + height() < desktopRect.height()) {
newPos.setY(pos.y() + GRAB_SIZE);
} else {
newPos.setY(pos.y() - GRAB_SIZE - height());
}
move(newPos);
WId wid = QApplication::desktop()->winId();
mPixmap = screen->grabWindow(wid, pos.x() - GRAB_SIZE / 2, pos.y() - GRAB_SIZE / 2, GRAB_SIZE, GRAB_SIZE);
update();
}
QColor QgsColorButton::sampleColor( QPoint point ) const
{
QScreen *screen = findScreenAt( point );
if ( ! screen )
{
return QColor();
}
QPixmap snappedPixmap = screen->grabWindow( QApplication::desktop()->winId(), point.x(), point.y(), 1, 1 );
QImage snappedImage = snappedPixmap.toImage();
return snappedImage.pixel( 0, 0 );
}
