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| author | Mitch Curtis <mitch.curtis@nokia.com> | 2012-09-07 10:17:54 +0200 |
|---|---|---|
| committer | Qt by Nokia <qt-info@nokia.com> | 2012-09-07 15:39:31 +0200 |
| commit | 1b0e279d5b52df60fdf81c648a59773fe84d6fc0 (patch) | |
| tree | 1360e06bf1d4d715717c4b5340b10b20082d267b /src/widgets/graphicsview/qgraphicsitem.cpp | |
| parent | 72ea9e1e9484a442e40d936403d3cf85c000fd81 (diff) | |
Document how opacity affects QGraphicsScene item queries.
Currently, QGraphicsScene::items() and related functions only return
items that are visible. The definition of visible effectively means
any item for whom isVisible() returns false or opacity() returns 0.0.
However, this is not documented anywhere.
Also fixed some typos/grammatical errors.
Change-Id: Ia6d1f7d63024dc9412438fe97748d7a69ee8225b
Reviewed-by: Qt Doc Bot <qt_docbot@qt-project.org>
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>
Reviewed-by: Andreas Aardal Hanssen <andreas@hanssen.name>
Reviewed-by: Geir Vattekar <geir.vattekar@nokia.com>
Diffstat (limited to 'src/widgets/graphicsview/qgraphicsitem.cpp')
| -rw-r--r-- | src/widgets/graphicsview/qgraphicsitem.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/widgets/graphicsview/qgraphicsitem.cpp b/src/widgets/graphicsview/qgraphicsitem.cpp index c4c9fff245..b82190575f 100644 --- a/src/widgets/graphicsview/qgraphicsitem.cpp +++ b/src/widgets/graphicsview/qgraphicsitem.cpp @@ -2606,7 +2606,8 @@ void QGraphicsItem::setSelected(bool selected) Returns this item's local opacity, which is between 0.0 (transparent) and 1.0 (opaque). This value is combined with parent and ancestor values into the effectiveOpacity(). The effective opacity decides how the item is - rendered. + rendered and also affects its visibility when queried by functions such as + QGraphicsView::items(). The opacity property decides the state of the painter passed to the paint() function. If the item is cached, i.e., ItemCoordinateCache or |