void FilterSortingArea::moveWidget(const FilterInfo &info, int beforeId)
{
// find both widgets
FilterWidget *filter = 0;
// first, find the filter
for (int i = 0; i < ui->layout->count(); i++) {
FilterWidget *current =
qobject_cast<FilterWidget *>(ui->layout->itemAt(i)->widget());
if (!current)
continue;
if (current->filterId() == info.id) {
filter = current;
break;
}
}
if (!filter) // filter was not found
return;
ui->layout->removeWidget(filter);
update();
// now, find the position
int pos = ui->layout->indexOf(ui->outputs);
for (int i = 0; i < ui->layout->count(); i++) {
FilterWidget *current =
qobject_cast<FilterWidget *>(ui->layout->itemAt(i)->widget());
if (!current)
continue;
if (current->filterId() == beforeId) {
pos = i;
break;
}
}
ui->layout->insertWidget(pos, filter);
emit delayedUpdateReq();
}
int FilterSortingArea::dragAnimation(QDropEvent *event)
{
int spacerIndex = ui->layout->indexOf(mEmptyWidget);
for (int i = 0; i < ui->layout->count(); i++) {
FilterWidget *filter =
qobject_cast<FilterWidget *>(ui->layout->itemAt(i)->widget());
if (filter) {
if (filter->pos().y() > event->pos().y()) {
if (spacerIndex != i - 1) {
ui->layout->insertWidget(i, mEmptyWidget);
if (!mEmptyWidget->isVisible())
mEmptyWidget->setVisible(true);
update();
}
return filter->filterId();
}
}
}
int index = ui->layout->indexOf(ui->outputs);
if (spacerIndex != index - 1) {
ui->layout->insertWidget(index, mEmptyWidget);
if (!mEmptyWidget->isVisible())
mEmptyWidget->setVisible(true);
update();
}
return 0;
}
void FilterSortingArea::dragEnterEvent(QDragEnterEvent *event)
{
FilterWidget *filter = qobject_cast<FilterWidget *>(event->source());
if (!filter)
return;
int moveId = filter->filterId();
int beforeId = dragAnimation(event);
if (moveId != 0 && !mInterface.canMove(moveId, beforeId))
return;
event->acceptProposedAction();
}
void FilterSortingArea::dropEvent(QDropEvent *event)
{
FilterWidget *filter = qobject_cast<FilterWidget *>(event->source());
if (!filter)
return;
int moveId = filter->filterId();
int beforeId = dragAnimation(event);
if (moveId != 0 && !mInterface.canMove(moveId, beforeId))
return;
event->acceptProposedAction();
// need to clear the animation widget here, in case of new filter
mEmptyWidget->hide();
update();
if (moveId > 0){
emit moveFilterRequested(moveId, beforeId);
} else {
emit addFilterRequested(mProcessorId, filter->filterType(), beforeId);
}
}