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Issue #76: Drag and drop

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This commit is contained in:
Jakub Melka 2023-10-07 15:40:45 +02:00
parent be0d02bb5c
commit bf53e7419b
3 changed files with 33 additions and 14 deletions
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44
Pdf4QtLib/sources/pdfitemmodels.cpp
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@ -574,8 +574,11 @@ QMimeData* PDFOutlineTreeItemModel::mimeData(const QModelIndexList& indexes) con
QByteArray ba; QByteArray ba;
{ {
QModelIndex index = indexes.front();
const PDFOutlineTreeItem* item = static_cast<const PDFOutlineTreeItem*>(index.internalPointer());
m_dragDropItem = item->getOutlineItem()->clone();
QDataStream stream(&ba, QDataStream::WriteOnly); QDataStream stream(&ba, QDataStream::WriteOnly);
stream << indexes.front().internalId(); stream << reinterpret_cast<quintptr>(m_dragDropItem.data());
} }
mimeData->setData(mimeTypes().front(), ba); mimeData->setData(mimeTypes().front(), ba);
@ -605,9 +608,29 @@ bool PDFOutlineTreeItemModel::dropMimeData(const QMimeData* data, Qt::DropAction
quintptr pointer = 0; quintptr pointer = 0;
stream >> pointer; stream >> pointer;
PDFOutlineTreeItem* item = reinterpret_cast<PDFOutlineTreeItem*>(pointer); PDFOutlineItem* item = reinterpret_cast<PDFOutlineItem*>(pointer);
QModelIndex sourceIndex = createIndex(item->getRow(), column, item); if (item == m_dragDropItem.data())
return moveRow(sourceIndex.parent(), sourceIndex.row(), parent, row); {
if (row == -1)
{
row = rowCount(parent);
}
if (column == -1)
{
column = 0;
}
if (insertRow(row, parent))
{
QModelIndex targetIndex = this->index(row, column, parent);
PDFOutlineTreeItem* targetTreeItem = static_cast<PDFOutlineTreeItem*>(targetIndex.internalPointer());
*targetTreeItem->getOutlineItem() = *item;
return true;
}
}
return false;
} }
bool PDFOutlineTreeItemModel::insertRows(int row, int count, const QModelIndex& parent) bool PDFOutlineTreeItemModel::insertRows(int row, int count, const QModelIndex& parent)
@ -695,25 +718,20 @@ bool PDFOutlineTreeItemModel::moveRows(const QModelIndex& sourceParent, int sour
destinationChild = 0; destinationChild = 0;
} }
// Signalizace začátku přesunu řádků beginRemoveRows(sourceParent, sourceRow, sourceRow + count - 1);
if (!beginMoveRows(sourceParent, sourceRow, sourceRow + count - 1, destinationParent, destinationChild))
{
return false;
}
QList<PDFOutlineTreeItem*> nodesToMove; QList<PDFOutlineTreeItem*> nodesToMove;
for (int i = 0; i < count; ++i) for (int i = 0; i < count; ++i)
{ {
nodesToMove.append(static_cast<PDFOutlineTreeItem*>(sourceNode->takeChild(sourceRow))); nodesToMove.append(static_cast<PDFOutlineTreeItem*>(sourceNode->takeChild(sourceRow)));
} }
endRemoveRows();
beginInsertRows(destinationParent, destinationChild, destinationChild + count - 1);
for (PDFOutlineTreeItem* node : nodesToMove) for (PDFOutlineTreeItem* node : nodesToMove)
{ {
destNode->insertCreatedChild(destinationChild++, node); destNode->insertCreatedChild(destinationChild++, node);
} }
endInsertRows();
// Signalizace konce přesunu řádků
endMoveRows();
return true; return true;
} }

1
Pdf4QtLib/sources/pdfitemmodels.h
View File

@ -214,6 +214,7 @@ public:
private: private:
QIcon m_icon; QIcon m_icon;
bool m_editable; bool m_editable;
mutable QSharedPointer<PDFOutlineItem> m_dragDropItem;
}; };
class PDF4QTLIBSHARED_EXPORT PDFSelectableOutlineTreeItemModel : public PDFOutlineTreeItemModel class PDF4QTLIBSHARED_EXPORT PDFSelectableOutlineTreeItemModel : public PDFOutlineTreeItemModel

2
Pdf4QtLib/sources/pdfoutline.cpp
View File

@ -1,4 +1,4 @@
// Copyright (C) 2019-2022 Jakub Melka // Copyright (C) 2019-2023 Jakub Melka
// //
// This file is part of PDF4QT. // This file is part of PDF4QT.
// //