/** @short Reimplemented to show custom pixmap during drag&drop
Qt's model-view classes don't provide any means of interfering with the
QDrag's pixmap so we just rip off QAbstractItemView::startDrag and provide
our own QPixmap.
*/
void MsgListView::startDrag(Qt::DropActions supportedActions)
{
// indexes for column 0, i.e. subject
QModelIndexList baseIndexes;
Q_FOREACH(const QModelIndex &index, selectedIndexes()) {
if (!(model()->flags(index) & Qt::ItemIsDragEnabled))
continue;
if (index.column() == Imap::Mailbox::MsgListModel::SUBJECT)
baseIndexes << index;
}
if (!baseIndexes.isEmpty()) {
QMimeData *data = model()->mimeData(baseIndexes);
if (!data)
return;
// use screen width and itemDelegate()->sizeHint() to determine size of the pixmap
int screenWidth = QApplication::desktop()->screenGeometry(this).width();
int maxWidth = qMax(400, screenWidth / 4);
QSize size(maxWidth, 0);
// Show a "+ X more items" text after so many entries
const int maxItems = 20;
QStyleOptionViewItem opt;
opt.initFrom(this);
opt.rect.setWidth(maxWidth);
opt.rect.setHeight(itemDelegate()->sizeHint(opt, baseIndexes.at(0)).height());
size.setHeight(qMin(maxItems + 1, baseIndexes.size()) * opt.rect.height());
// State_Selected provides for nice background of the items
opt.state |= QStyle::State_Selected;
// paint list of selected items using itemDelegate() to be consistent with style
QPixmap pixmap(size);
pixmap.fill(Qt::transparent);
QPainter p(&pixmap);
for (int i = 0; i < baseIndexes.size(); ++i) {
opt.rect.moveTop(i * opt.rect.height());
if (i == maxItems) {
p.fillRect(opt.rect, palette().color(QPalette::Disabled, QPalette::Highlight));
p.setBrush(palette().color(QPalette::Disabled, QPalette::HighlightedText));
p.drawText(opt.rect, Qt::AlignRight, tr("+ %n additional item(s)", 0, baseIndexes.size() - maxItems));
break;
}
itemDelegate()->paint(&p, opt, baseIndexes.at(i));
}
QDrag *drag = new QDrag(this);
drag->setPixmap(pixmap);
drag->setMimeData(data);
drag->setHotSpot(QPoint(0, 0));
Qt::DropAction dropAction = Qt::IgnoreAction;
if (defaultDropAction() != Qt::IgnoreAction && (supportedActions & defaultDropAction()))
dropAction = defaultDropAction();
else if (supportedActions & Qt::CopyAction && dragDropMode() != QAbstractItemView::InternalMove)
dropAction = Qt::CopyAction;
if (drag->exec(supportedActions, dropAction) == Qt::MoveAction) {
// QAbstractItemView::startDrag calls d->clearOrRemove() here, so
// this is a copy of QAbstractItemModelPrivate::clearOrRemove();
const QItemSelection selection = selectionModel()->selection();
QList<QItemSelectionRange>::const_iterator it = selection.constBegin();
if (!dragDropOverwriteMode()) {
for (; it != selection.constEnd(); ++it) {
QModelIndex parent = it->parent();
if (it->left() != 0)
continue;
if (it->right() != (model()->columnCount(parent) - 1))
continue;
int count = it->bottom() - it->top() + 1;
model()->removeRows(it->top(), count, parent);
}
} else {
// we can't remove the rows so reset the items (i.e. the view is like a table)
QModelIndexList list = selection.indexes();
for (int i = 0; i < list.size(); ++i) {
QModelIndex index = list.at(i);
QMap<int, QVariant> roles = model()->itemData(index);
for (QMap<int, QVariant>::Iterator it = roles.begin(); it != roles.end(); ++it)
it.value() = QVariant();
model()->setItemData(index, roles);
}
}
}
}
}
int QAbstractItemView::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
{
_id = QAbstractScrollArea::qt_metacall(_c, _id, _a);
if (_id < 0)
return _id;
if (_c == QMetaObject::InvokeMetaMethod) {
switch (_id) {
case 0: pressed((*reinterpret_cast< const QModelIndex(*)>(_a[1]))); break;
case 1: clicked((*reinterpret_cast< const QModelIndex(*)>(_a[1]))); break;
case 2: doubleClicked((*reinterpret_cast< const QModelIndex(*)>(_a[1]))); break;
case 3: activated((*reinterpret_cast< const QModelIndex(*)>(_a[1]))); break;
case 4: entered((*reinterpret_cast< const QModelIndex(*)>(_a[1]))); break;
case 5: viewportEntered(); break;
case 6: reset(); break;
case 7: setRootIndex((*reinterpret_cast< const QModelIndex(*)>(_a[1]))); break;
case 8: doItemsLayout(); break;
case 9: selectAll(); break;
case 10: edit((*reinterpret_cast< const QModelIndex(*)>(_a[1]))); break;
case 11: clearSelection(); break;
case 12: setCurrentIndex((*reinterpret_cast< const QModelIndex(*)>(_a[1]))); break;
case 13: scrollToTop(); break;
case 14: scrollToBottom(); break;
case 15: update((*reinterpret_cast< const QModelIndex(*)>(_a[1]))); break;
case 16: dataChanged((*reinterpret_cast< const QModelIndex(*)>(_a[1])),(*reinterpret_cast< const QModelIndex(*)>(_a[2]))); break;
case 17: rowsInserted((*reinterpret_cast< const QModelIndex(*)>(_a[1])),(*reinterpret_cast< int(*)>(_a[2])),(*reinterpret_cast< int(*)>(_a[3]))); break;
case 18: rowsAboutToBeRemoved((*reinterpret_cast< const QModelIndex(*)>(_a[1])),(*reinterpret_cast< int(*)>(_a[2])),(*reinterpret_cast< int(*)>(_a[3]))); break;
case 19: selectionChanged((*reinterpret_cast< const QItemSelection(*)>(_a[1])),(*reinterpret_cast< const QItemSelection(*)>(_a[2]))); break;
case 20: currentChanged((*reinterpret_cast< const QModelIndex(*)>(_a[1])),(*reinterpret_cast< const QModelIndex(*)>(_a[2]))); break;
case 21: updateEditorData(); break;
case 22: updateEditorGeometries(); break;
case 23: updateGeometries(); break;
case 24: verticalScrollbarAction((*reinterpret_cast< int(*)>(_a[1]))); break;
case 25: horizontalScrollbarAction((*reinterpret_cast< int(*)>(_a[1]))); break;
case 26: verticalScrollbarValueChanged((*reinterpret_cast< int(*)>(_a[1]))); break;
case 27: horizontalScrollbarValueChanged((*reinterpret_cast< int(*)>(_a[1]))); break;
case 28: closeEditor((*reinterpret_cast< QWidget*(*)>(_a[1])),(*reinterpret_cast< QAbstractItemDelegate::EndEditHint(*)>(_a[2]))); break;
case 29: commitData((*reinterpret_cast< QWidget*(*)>(_a[1]))); break;
case 30: editorDestroyed((*reinterpret_cast< QObject*(*)>(_a[1]))); break;
case 31: d_func()->_q_columnsAboutToBeRemoved((*reinterpret_cast< const QModelIndex(*)>(_a[1])),(*reinterpret_cast< int(*)>(_a[2])),(*reinterpret_cast< int(*)>(_a[3]))); break;
case 32: d_func()->_q_columnsRemoved((*reinterpret_cast< const QModelIndex(*)>(_a[1])),(*reinterpret_cast< int(*)>(_a[2])),(*reinterpret_cast< int(*)>(_a[3]))); break;
case 33: d_func()->_q_rowsRemoved((*reinterpret_cast< const QModelIndex(*)>(_a[1])),(*reinterpret_cast< int(*)>(_a[2])),(*reinterpret_cast< int(*)>(_a[3]))); break;
case 34: d_func()->_q_modelDestroyed(); break;
case 35: d_func()->_q_layoutChanged(); break;
case 36: d_func()->_q_fetchMore(); break;
}
_id -= 37;
}
#ifndef QT_NO_PROPERTIES
else if (_c == QMetaObject::ReadProperty) {
void *_v = _a[0];
switch (_id) {
case 0: *reinterpret_cast< bool*>(_v) = hasAutoScroll(); break;
case 1: *reinterpret_cast< int*>(_v) = autoScrollMargin(); break;
case 2: *reinterpret_cast<int*>(_v) = QFlag(editTriggers()); break;
case 3: *reinterpret_cast< bool*>(_v) = tabKeyNavigation(); break;
case 4: *reinterpret_cast< bool*>(_v) = showDropIndicator(); break;
case 5: *reinterpret_cast< bool*>(_v) = dragEnabled(); break;
case 6: *reinterpret_cast< bool*>(_v) = dragDropOverwriteMode(); break;
case 7: *reinterpret_cast< DragDropMode*>(_v) = dragDropMode(); break;
case 8: *reinterpret_cast< bool*>(_v) = alternatingRowColors(); break;
case 9: *reinterpret_cast< SelectionMode*>(_v) = selectionMode(); break;
case 10: *reinterpret_cast< SelectionBehavior*>(_v) = selectionBehavior(); break;
case 11: *reinterpret_cast< QSize*>(_v) = iconSize(); break;
case 12: *reinterpret_cast< Qt::TextElideMode*>(_v) = textElideMode(); break;
case 13: *reinterpret_cast< ScrollMode*>(_v) = verticalScrollMode(); break;
case 14: *reinterpret_cast< ScrollMode*>(_v) = horizontalScrollMode(); break;
}
_id -= 15;
} else if (_c == QMetaObject::WriteProperty) {
void *_v = _a[0];
switch (_id) {
case 0: setAutoScroll(*reinterpret_cast< bool*>(_v)); break;
case 1: setAutoScrollMargin(*reinterpret_cast< int*>(_v)); break;
case 2: setEditTriggers(QFlag(*reinterpret_cast<int*>(_v))); break;
case 3: setTabKeyNavigation(*reinterpret_cast< bool*>(_v)); break;
case 4: setDropIndicatorShown(*reinterpret_cast< bool*>(_v)); break;
case 5: setDragEnabled(*reinterpret_cast< bool*>(_v)); break;
case 6: setDragDropOverwriteMode(*reinterpret_cast< bool*>(_v)); break;
case 7: setDragDropMode(*reinterpret_cast< DragDropMode*>(_v)); break;
case 8: setAlternatingRowColors(*reinterpret_cast< bool*>(_v)); break;
case 9: setSelectionMode(*reinterpret_cast< SelectionMode*>(_v)); break;
case 10: setSelectionBehavior(*reinterpret_cast< SelectionBehavior*>(_v)); break;
case 11: setIconSize(*reinterpret_cast< QSize*>(_v)); break;
case 12: setTextElideMode(*reinterpret_cast< Qt::TextElideMode*>(_v)); break;
case 13: setVerticalScrollMode(*reinterpret_cast< ScrollMode*>(_v)); break;
case 14: setHorizontalScrollMode(*reinterpret_cast< ScrollMode*>(_v)); break;
}
_id -= 15;
} else if (_c == QMetaObject::ResetProperty) {
_id -= 15;
} else if (_c == QMetaObject::QueryPropertyDesignable) {
_id -= 15;
} else if (_c == QMetaObject::QueryPropertyScriptable) {
_id -= 15;
} else if (_c == QMetaObject::QueryPropertyStored) {
_id -= 15;
} else if (_c == QMetaObject::QueryPropertyEditable) {
_id -= 15;
} else if (_c == QMetaObject::QueryPropertyUser) {
_id -= 15;
}
#endif // QT_NO_PROPERTIES
return _id;
}
int QAbstractItemView::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
{
_id = QAbstractScrollArea::qt_metacall(_c, _id, _a);
if (_id < 0)
return _id;
if (_c == QMetaObject::InvokeMetaMethod) {
if (_id < 39)
qt_static_metacall(this, _c, _id, _a);
_id -= 39;
}
#ifndef QT_NO_PROPERTIES
else if (_c == QMetaObject::ReadProperty) {
void *_v = _a[0];
switch (_id) {
case 0: *reinterpret_cast< bool*>(_v) = hasAutoScroll(); break;
case 1: *reinterpret_cast< int*>(_v) = autoScrollMargin(); break;
case 2: *reinterpret_cast<int*>(_v) = QFlag(editTriggers()); break;
case 3: *reinterpret_cast< bool*>(_v) = tabKeyNavigation(); break;
case 4: *reinterpret_cast< bool*>(_v) = showDropIndicator(); break;
case 5: *reinterpret_cast< bool*>(_v) = dragEnabled(); break;
case 6: *reinterpret_cast< bool*>(_v) = dragDropOverwriteMode(); break;
case 7: *reinterpret_cast< DragDropMode*>(_v) = dragDropMode(); break;
case 8: *reinterpret_cast< Qt::DropAction*>(_v) = defaultDropAction(); break;
case 9: *reinterpret_cast< bool*>(_v) = alternatingRowColors(); break;
case 10: *reinterpret_cast< SelectionMode*>(_v) = selectionMode(); break;
case 11: *reinterpret_cast< SelectionBehavior*>(_v) = selectionBehavior(); break;
case 12: *reinterpret_cast< QSize*>(_v) = iconSize(); break;
case 13: *reinterpret_cast< Qt::TextElideMode*>(_v) = textElideMode(); break;
case 14: *reinterpret_cast< ScrollMode*>(_v) = verticalScrollMode(); break;
case 15: *reinterpret_cast< ScrollMode*>(_v) = horizontalScrollMode(); break;
}
_id -= 16;
} else if (_c == QMetaObject::WriteProperty) {
void *_v = _a[0];
switch (_id) {
case 0: setAutoScroll(*reinterpret_cast< bool*>(_v)); break;
case 1: setAutoScrollMargin(*reinterpret_cast< int*>(_v)); break;
case 2: setEditTriggers(QFlag(*reinterpret_cast<int*>(_v))); break;
case 3: setTabKeyNavigation(*reinterpret_cast< bool*>(_v)); break;
case 4: setDropIndicatorShown(*reinterpret_cast< bool*>(_v)); break;
case 5: setDragEnabled(*reinterpret_cast< bool*>(_v)); break;
case 6: setDragDropOverwriteMode(*reinterpret_cast< bool*>(_v)); break;
case 7: setDragDropMode(*reinterpret_cast< DragDropMode*>(_v)); break;
case 8: setDefaultDropAction(*reinterpret_cast< Qt::DropAction*>(_v)); break;
case 9: setAlternatingRowColors(*reinterpret_cast< bool*>(_v)); break;
case 10: setSelectionMode(*reinterpret_cast< SelectionMode*>(_v)); break;
case 11: setSelectionBehavior(*reinterpret_cast< SelectionBehavior*>(_v)); break;
case 12: setIconSize(*reinterpret_cast< QSize*>(_v)); break;
case 13: setTextElideMode(*reinterpret_cast< Qt::TextElideMode*>(_v)); break;
case 14: setVerticalScrollMode(*reinterpret_cast< ScrollMode*>(_v)); break;
case 15: setHorizontalScrollMode(*reinterpret_cast< ScrollMode*>(_v)); break;
}
_id -= 16;
} else if (_c == QMetaObject::ResetProperty) {
_id -= 16;
} else if (_c == QMetaObject::QueryPropertyDesignable) {
_id -= 16;
} else if (_c == QMetaObject::QueryPropertyScriptable) {
_id -= 16;
} else if (_c == QMetaObject::QueryPropertyStored) {
_id -= 16;
} else if (_c == QMetaObject::QueryPropertyEditable) {
_id -= 16;
} else if (_c == QMetaObject::QueryPropertyUser) {
_id -= 16;
}
#endif // QT_NO_PROPERTIES
return _id;
}
void TreeViewWidget::startDrag(Qt::DropActions pSupportedActions)
{
// This a reimplementation of QAbstractItemView::startDrag, so that we can
// provide OpenCOR with a better pixmap for the drag object
// Note: indeed, on Windows, the pixmap only shows the dragged item that are
// visible in the QTreeView. Also, if there an item covers several
// columns, then the pixmap will show several 'cells' some of them
// empty if a column is empty, so... instead we want to provide a
// generic pixmap which looks 'good' on all platforms...
// Retrieve the selected draggable items, if any
// Note: the following code is based on
// QAbstractItemViewPrivate::selectedDraggableIndexes...
QModelIndexList selectedDraggableIndexes = selectedIndexes();
for (int i = selectedDraggableIndexes.count()-1; i >= 0; --i)
if ( !(model()->flags(selectedDraggableIndexes[i]) & Qt::ItemIsDragEnabled)
|| selectedDraggableIndexes[i].column())
// The current selected item is not draggable or is not in the first
// column
// Note: regarding the test on the column number, it is because we
// may have a model data that requires several columns (e.g.
// QFileSystemModel) in which case selectedIndexes would
// return a number of indexes equal to the number of rows
// times the number of columns while we only want a number of
// indexes to be equal to the number of rows (since we have a
// selection mode of QAbstractItemView::ExtendedSelection)
selectedDraggableIndexes.removeAt(i);
// Start the dragging action is there is at least one selected draggable
// item
if (selectedDraggableIndexes.count()) {
// There is at least one selected draggable item, so create a QMimeData
// object for it
QMimeData *mimeData = model()->mimeData(selectedDraggableIndexes);
if (!mimeData)
return;
// Create the pixmap that will be associated with the dragging action
QPixmap pixmap((selectedDraggableIndexes.count() == 1)?
":oxygen/mimetypes/application-x-zerosize.png":
":oxygen/places/document-multiple.png");
// Create the drag object
QDrag *drag = new QDrag(this);
drag->setMimeData(mimeData);
drag->setPixmap(pixmap);
drag->setHotSpot(QPoint(0.5*pixmap.width(), 0.5*pixmap.height()));
// Do the dragging itself
Qt::DropAction realDefaultDropAction = Qt::IgnoreAction;
if ( (defaultDropAction() != Qt::IgnoreAction)
&& (pSupportedActions & defaultDropAction()))
realDefaultDropAction = defaultDropAction();
else if ( (pSupportedActions & Qt::CopyAction)
&& (dragDropMode() != QAbstractItemView::InternalMove))
realDefaultDropAction = Qt::CopyAction;
if (drag->exec(pSupportedActions, realDefaultDropAction) == Qt::MoveAction) {
// We want to move the items
// Note: the following code is based on
// QAbstractItemViewPrivate::clearOrRemove...
const QItemSelection selection = selectionModel()->selection();
if (!dragDropOverwriteMode()) {
foreach (const QItemSelectionRange &itemSelectionRange, selection) {
QModelIndex parent = itemSelectionRange.parent();
if (itemSelectionRange.left())
continue;
if (itemSelectionRange.right() != (model()->columnCount(parent)-1))
continue;
model()->removeRows(itemSelectionRange.top(),
itemSelectionRange.bottom()-itemSelectionRange.top()+1,
parent);
}
} else {
void MacroTreeView::startDrag(Qt::DropActions supportedActions)
{
QModelIndexList indexes = selectionModel()->selectedRows();
for(int i = indexes.count() - 1 ; i >= 0; --i)
{
if (!(indexes.at(i).isValid()) || !(model()->flags(indexes.at(i)) & Qt::ItemIsDragEnabled))
{
indexes.removeAt(i);
}
}
if (indexes.count() > 0)
{
QMimeData *data = model()->mimeData(indexes);
if (!data)
{
return;
}
QPixmap dragPixmap(":/icons/resources/macro.png");
QModelIndex srcIndex = dynamic_cast<QSortFilterProxyModel*>(model())->mapToSource(indexes[0]);
const ModelItemMacro* item = static_cast<const ModelItemMacro*>(srcIndex.internalPointer());
graph::Vertex::Ptr dummyVertex = app::MacroManager::instance().createVertexInstance(item->macro().signature());
if (!dummyVertex.isNull())
{
graph::VertexItem::Ptr vertexItem = dummyVertex->sceneItem().staticCast<graph::VertexItem>();
if (!vertexItem.isNull())
{
dragPixmap = vertexItem->paintToPixmap();
}
app::MacroManager::instance().deleteVertexInstance(dummyVertex);
}
data->setImageData(dragPixmap.toImage());
QDrag* dragObjectPtr = new QDrag(this);
dragObjectPtr->setPixmap(dragPixmap);
dragObjectPtr->setMimeData(data);
dragObjectPtr->setHotSpot(dragPixmap.rect().center());
Qt::DropAction defDropAction = Qt::IgnoreAction;
if (defaultDropAction() != Qt::IgnoreAction && (supportedActions & defaultDropAction()))
{
defDropAction = defaultDropAction();
}
else if (supportedActions & Qt::CopyAction && dragDropMode() != QAbstractItemView::InternalMove)
{
defDropAction = Qt::CopyAction;
}
if (dragObjectPtr->exec(supportedActions, defDropAction) == Qt::MoveAction)
{
// clear or remove dragged items
const QItemSelection selection = selectionModel()->selection();
QList<QItemSelectionRange>::const_iterator it = selection.constBegin();
if (!dragDropOverwriteMode())
{
for (; it != selection.constEnd(); ++it)
{
QModelIndex parent = (*it).parent();
if ((*it).left() != 0)
continue;
if ((*it).right() != (model()->columnCount(parent) - 1))
continue;
int count = (*it).bottom() - (*it).top() + 1;
model()->removeRows((*it).top(), count, parent);
}
}
else
{
QModelIndexList list = selection.indexes();
for (int i=0; i < list.size(); ++i)
{
QModelIndex index = list.at(i);
QMap<int, QVariant> roles = model()->itemData(index);
for (QMap<int, QVariant>::Iterator it = roles.begin(); it != roles.end(); ++it)
{
it.value() = QVariant();
}
model()->setItemData(index, roles);
}
}
}
}
}