59 lines
2.6 KiB
C++
59 lines
2.6 KiB
C++
/***************************************************************************
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* Copyright (c) 2023 Boyer Pierre-louis <pierrelouis.boyer@gmail.com> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#include "PreCompiled.h"
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#ifndef _PreComp_
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# include <QDragMoveEvent>
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#endif
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#include "QListWidgetDragBugFix.h"
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QListWidgetDragBugFix::QListWidgetDragBugFix(QWidget * parent)
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: QListWidget(parent)
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{
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}
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QListWidgetDragBugFix::~QListWidgetDragBugFix()
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{
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}
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/* Qt has a recent bug (2023, https://bugreports.qt.io/browse/QTBUG-100128)
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* where the items disappears in certain conditions when drag and dropping.
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* Here we prevent the situation where this happens.
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* 1 - If the item is dropped on the item below such that the item doesn't move (ie superior half of the below item)
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* 2 - The item is the last one and user drop it on the empty space below.
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* In both those cases the item widget was lost.
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*/
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void QListWidgetDragBugFix::dragMoveEvent(QDragMoveEvent *e)
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{
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if ((row(itemAt(e->pos())) == currentRow() + 1)
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|| (currentRow() == count() - 1 && row(itemAt(e->pos())) == -1)) {
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e->ignore();
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}
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else {
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QListWidget::dragMoveEvent(e);
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}
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}
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#include "moc_QListWidgetDragBugFix.cpp"
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