Fabian Kosmale 8fae0aa4ae QQuickItemView: Skip instantiating delegates if size is 0 ... If the area of a (List|Grid)View is 0, then instantiating delegates is pointless, as they couldn't be shown anyway. However, our current logic could not handle this case well, and would end up instantiating a delegate for every delegate entry if their size also ended up being 0 - you can after all fit infinitely many 0 sized items into a zero sized container. Detect this situation in QQuickItemViewPrivate::refill and the applyInsertionChange implementations. Note that we only exit early if there are no visible items and the view is zero-sized; if there are visible items, we still want to ensure that they are removed after all. We also need to adjust a few tests which had zero sized views to no longer be zero sized; otherwise they wouldn't have created their delegates in time. [ChangeLog][QtQuick][ListView][Important Behavior Change] If a ListView has size zero, it won't instantiate any delegates until its size becomes non-zero. Fixes: QTBUG-110625 Fixes: QTBUG-89568 Fixes: QTBUG-51773 Change-Id: Ibe0e6fa5f01784016882522c120d2fee38df285b Reviewed-by: Mitch Curtis <mitch.curtis@qt.io> (cherry picked from commit 37c25c6e74) Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>		2023-04-20 10:17:07 +00:00
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data	ListModel: Use PersistentValue to keep track of objects	2023-01-31 22:01:42 +00:00
CMakeLists.txt	Retire the qt_parse_all_arguments	2023-02-10 11:22:15 +00:00
tst_qqmllistmodel.cpp	QQuickItemView: Skip instantiating delegates if size is 0	2023-04-20 10:17:07 +00:00