bool QBasicDrag::eventFilter(QObject *o, QEvent *e)
{
Q_UNUSED(o);
if (!m_drag) {
if (e->type() == QEvent::KeyRelease && static_cast<QKeyEvent*>(e)->key() == Qt::Key_Escape) {
disableEventFilter();
exitDndEventLoop();
return true; // block the key release
}
return false;
}
switch (e->type()) {
case QEvent::ShortcutOverride:
// prevent accelerators from firing while dragging
e->accept();
return true;
case QEvent::KeyPress:
case QEvent::KeyRelease:
{
QKeyEvent *ke = static_cast<QKeyEvent *>(e);
if (ke->key() == Qt::Key_Escape && e->type() == QEvent::KeyPress) {
cancel();
disableEventFilter();
exitDndEventLoop();
}
return true; // Eat all key events
}
case QEvent::MouseMove:
{
QPoint nativePosition = getNativeMousePos(e, o);
move(nativePosition);
return true; // Eat all mouse move events
}
case QEvent::MouseButtonRelease:
disableEventFilter();
if (canDrop()) {
QPoint nativePosition = getNativeMousePos(e, o);
drop(nativePosition);
} else {
cancel();
}
exitDndEventLoop();
QCoreApplication::postEvent(o, new QMouseEvent(*static_cast<QMouseEvent *>(e)));
return true; // defer mouse release events until drag event loop has returned
case QEvent::MouseButtonDblClick:
case QEvent::Wheel:
return true;
default:
break;
}
return false;
}
bool QBasicDrag::eventFilter(QObject *o, QEvent *e)
{
Q_UNUSED(o);
if (!m_drag) {
if (e->type() == QEvent::KeyRelease && static_cast<QKeyEvent*>(e)->key() == Qt::Key_Escape) {
disableEventFilter();
exitDndEventLoop();
return true; // block the key release
}
return false;
}
switch (e->type()) {
case QEvent::ShortcutOverride:
// prevent accelerators from firing while dragging
e->accept();
return true;
case QEvent::KeyPress:
case QEvent::KeyRelease:
{
QKeyEvent *ke = static_cast<QKeyEvent *>(e);
if (ke->key() == Qt::Key_Escape && e->type() == QEvent::KeyPress) {
cancel();
disableEventFilter();
exitDndEventLoop();
}
return true; // Eat all key events
}
case QEvent::MouseMove:
move(static_cast<QMouseEvent *>(e));
return true; // Eat all mouse events
case QEvent::MouseButtonRelease:
disableEventFilter();
if (canDrop()) {
drop(static_cast<QMouseEvent *>(e));
} else {
cancel();
}
exitDndEventLoop();
return true; // Eat all mouse events
case QEvent::MouseButtonPress:
case QEvent::MouseButtonDblClick:
case QEvent::Wheel:
return true;
default:
break;
}
return false;
}
