52 lines
2.5 KiB
C++
52 lines
2.5 KiB
C++
// SPDX-License-Identifier: LGPL-2.1-or-later
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/****************************************************************************
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* Copyright (c) 2023 Boyer Pierre-louis <pierrelouis.boyer@gmail.com> *
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* Copyright (c) 2023 FreeCAD Project Association *
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* *
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* This file is part of FreeCAD. *
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* *
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* FreeCAD is free software: you can redistribute it and/or modify it *
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* under the terms of the GNU Lesser General Public License as *
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* published by the Free Software Foundation, either version 2.1 of the *
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* License, or (at your option) any later version. *
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* *
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* FreeCAD is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public *
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* License along with FreeCAD. If not, see *
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* <https://www.gnu.org/licenses/>. *
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* *
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***************************************************************************/
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#ifndef QLISTWIDGETDRAGBUGFIX_HPP
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#define QLISTWIDGETDRAGBUGFIX_HPP
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#include <QDragMoveEvent>
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#include <QListWidget>
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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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* When Qt solve this bug, this class should not be required anymore.
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*/
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class ListWidgetDragBugFix : public QListWidget
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{
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Q_OBJECT
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public:
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explicit ListWidgetDragBugFix(QWidget *parent);
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~ListWidgetDragBugFix() override;
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protected:
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void dragMoveEvent(QDragMoveEvent *e) override;
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};
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#endif
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