diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gui/graphicsview/qgraphicsitem.cpp | 12 | ||||
| -rw-r--r-- | src/gui/graphicsview/qgraphicsitem_p.h | 2 |
2 files changed, 13 insertions, 1 deletions
diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp index bb95543..cda1bd1 100644 --- a/src/gui/graphicsview/qgraphicsitem.cpp +++ b/src/gui/graphicsview/qgraphicsitem.cpp @@ -1862,6 +1862,9 @@ qreal QGraphicsItem::opacity() const */ qreal QGraphicsItem::effectiveOpacity() const { + if (!d_ptr->hasEffectiveOpacity) + return qreal(1.0); + QVariant effectiveOpacity = d_ptr->extra(QGraphicsItemPrivate::ExtraEffectiveOpacity); return effectiveOpacity.isNull() ? qreal(1.0) : qreal(effectiveOpacity.toDouble()); } @@ -3680,7 +3683,14 @@ void QGraphicsItemPrivate::resolveEffectiveOpacity(qreal parentEffectiveOpacity) } // Set this item's resolved opacity. - setExtra(ExtraEffectiveOpacity, myEffectiveOpacity); + if (qFuzzyCompare(myEffectiveOpacity, qreal(1.0))) { + // Opaque, unset effective opacity. + hasEffectiveOpacity = 0; + unsetExtra(ExtraEffectiveOpacity); + } else { + hasEffectiveOpacity = 1; + setExtra(ExtraEffectiveOpacity, myEffectiveOpacity); + } // Resolve children always. for (int i = 0; i < children.size(); ++i) diff --git a/src/gui/graphicsview/qgraphicsitem_p.h b/src/gui/graphicsview/qgraphicsitem_p.h index 07f6958..98fe6ed 100644 --- a/src/gui/graphicsview/qgraphicsitem_p.h +++ b/src/gui/graphicsview/qgraphicsitem_p.h @@ -133,6 +133,7 @@ public: hasBoundingRegionGranularity(0), flags(0), hasOpacity(0), + hasEffectiveOpacity(0), isWidget(0), dirty(0), dirtyChildren(0), @@ -262,6 +263,7 @@ public: // New 32 bytes quint32 hasOpacity : 1; + quint32 hasEffectiveOpacity : 1; quint32 isWidget : 1; quint32 dirty : 1; quint32 dirtyChildren : 1; |