bool ossimQtImageControllerZoomEventFilter::eventFilter(QObject* /*obj*/,
QEvent* event)
{
if(!theController) return false;
if(!theController->getImageWidget()) return false;
switch(event->type())
{
case QEvent::KeyPress:
{
QKeyEvent* keyEvent = (QKeyEvent*)event;
if(keyEvent->stateAfter() & Qt::ShiftButton)
{
theController->setZoomModeOut();
}
if(keyEvent->stateAfter() & Qt::ControlButton)
{
thePanToOverrideFlag = true;
}
break;
}
case QEvent::KeyRelease:
{
QKeyEvent* keyEvent = (QKeyEvent*)event;
if(keyEvent->state() & Qt::ShiftButton)
{
theController->setZoomModeIn();
}
if(keyEvent->state() & Qt::ControlButton)
{
thePanToOverrideFlag = false;
}
break;
}
default:
{
break;
}
}
return false;
}
bool QDragManager::eventFilter( QObject *o, QEvent *e )
{
if ( !o->isWidgetType() )
return FALSE;
switch( e->type() ) {
case QEvent::KeyPress:
case QEvent::KeyRelease:
{
QKeyEvent *ke = ((QKeyEvent*)e);
if ( ke->key() == Key_Escape && e->type() == QEvent::KeyPress ) {
cancel();
qApp->removeEventFilter( this );
dragSource = 0;
} else {
updateMode(ke->stateAfter());
updateCursor();
}
return TRUE; // Eat all key events
}
case QEvent::MouseButtonPress:
case QEvent::MouseMove:
{
QMouseEvent *me = (QMouseEvent *)e;
if ( me->state() & ( QMouseEvent::LeftButton | QMouseEvent::MidButton | QMouseEvent::RightButton ) ) {
QWidget *cw = QApplication::widgetAt( me->globalPos(), TRUE );
// Fix for when we move mouse on to the deco widget
if ( qt_qws_dnd_deco && cw == qt_qws_dnd_deco )
cw = dropWidget;
if ( dropWidget != cw ) {
if ( dropWidget ) {
QDragLeaveEvent dle;
QApplication::sendEvent( dropWidget, &dle );
willDrop = FALSE;
updateCursor();
restoreCursor = TRUE;
dropWidget = NULL;
}
if ( cw && cw->acceptDrops() ) {
dropWidget = cw;
QDragEnterEvent dee( me->pos() );
QApplication::sendEvent( dropWidget, &dee );
willDrop = dee.isAccepted();
updateCursor();
restoreCursor = TRUE;
}
} else if ( cw ) {
QDragMoveEvent dme( me->pos() );
QApplication::sendEvent( cw, &dme );
updatePixmap();
}
}
return TRUE; // Eat all mouse events
}
case QEvent::MouseButtonRelease:
{
qApp->removeEventFilter( this );
if ( qt_qws_dnd_deco )
delete qt_qws_dnd_deco;
qt_qws_dnd_deco = 0;
if ( restoreCursor ) {
willDrop = FALSE;
myRestoreOverrideCursor();
restoreCursor = FALSE;
}
if ( dropWidget ) {
QMouseEvent *me = (QMouseEvent *)e;
QDropEvent de( me->pos() );
QApplication::sendEvent( dropWidget, &de );
dropWidget = NULL;
}
return TRUE; // Eat all mouse events
}
default:
break;
}
return FALSE;
}
