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Improve drag-and-drop visual handling in DragWidget

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Modified the mousePressEvent in DragWidget to
temporarily detach the dragged QLabel from its
parent using setParent(nullptr). This ensures the
dragged widget remains visible and above other
widgets during the drag operation. Re-parenting
logic was added to restore the QLabel to its o
riginal container if the drag action is not a
MoveAction. This change addresses visual issues
where dragged items could disappear behind
overlapping widgets, enhancing user experience
and maintaining consistent behavior.

Task-number: QTBUG-123777
Pick-to: 6.6.3 6.6.2
Change-Id: I3edce9c96815e32eb8f00b61f7eda1709de04b4d
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
(cherry picked from commit 8e3f04f54c421b2884b5c80bafc5d0df2212ffc1)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
This commit is contained in:
Patryk Stachniak 2024-11-28 09:14:49 +01:00 committed by Qt Cherry-pick Bot
parent db4e408ca9
commit 271c8b3c99
1 changed files with 4 additions and 9 deletions
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13
examples/widgets/draganddrop/draggableicons/dragwidget.cpp
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@ -114,18 +114,13 @@ void DragWidget::mousePressEvent(QMouseEvent *event)
drag->setHotSpot(event->position().toPoint() - child->pos());
//! [3]
QPixmap tempPixmap = pixmap;
QPainter painter;
painter.begin(&tempPixmap);
painter.fillRect(pixmap.rect(), QColor(127, 127, 127, 127));
painter.end();
child->setPixmap(tempPixmap);
child->setParent(nullptr);
if (drag->exec(Qt::CopyAction | Qt::MoveAction, Qt::CopyAction) == Qt::MoveAction) {
child->close();
delete child;
} else {
child->setParent(this);
child->move(event->position().toPoint() - drag->hotSpot());
child->show();
child->setPixmap(pixmap);
}
}