void QPixmap::setMask( const QBitmap &newmask )
{
const QPixmap *tmp = &newmask; // dec cxx bug
if ( (data == tmp->data) ||
( newmask.handle() && newmask.handle() == handle() ) ) {
QPixmap m = tmp->copy( TRUE );
setMask( *((QBitmap*)&m) );
data->selfmask = TRUE; // mask == pixmap
return;
}
if ( newmask.isNull() ) { // reset the mask
if (data->mask) {
detach();
data->selfmask = FALSE;
delete data->mask;
data->mask = 0;
}
return;
}
detach();
data->selfmask = FALSE;
if ( newmask.width() != width() || newmask.height() != height() ) {
#if defined(QT_CHECK_RANGE)
qWarning( "QPixmap::setMask: The pixmap and the mask must have "
"the same size" );
#endif
return;
}
#if defined(Q_WS_MAC) || (defined(Q_WS_X11) && !defined(QT_NO_XFTFREETYPE))
// when setting the mask, we get rid of the alpha channel completely
delete data->alphapm;
data->alphapm = 0;
#endif // Q_WS_X11 && !QT_NO_XFTFREETYPE
delete data->mask;
QBitmap* newmaskcopy;
if ( newmask.mask() )
newmaskcopy = (QBitmap*)new QPixmap( tmp->copy( TRUE ) );
else
newmaskcopy = new QBitmap( newmask );
#ifdef Q_WS_X11
newmaskcopy->x11SetScreen( x11Screen() );
#endif
data->mask = newmaskcopy;
}
