diff options
Diffstat (limited to 'doc/src/snippets')
| -rw-r--r-- | doc/src/snippets/code/src_gui_effects_qgraphicseffect.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/src/snippets/code/src_gui_effects_qgraphicseffect.cpp b/doc/src/snippets/code/src_gui_effects_qgraphicseffect.cpp index 6265c80..152b04f 100644 --- a/doc/src/snippets/code/src_gui_effects_qgraphicseffect.cpp +++ b/doc/src/snippets/code/src_gui_effects_qgraphicseffect.cpp @@ -31,3 +31,13 @@ MyGraphicsEffect::draw(QPainter *painter, QGraphicsEffectSource *source) } //! [1] +//! [2] +... +QLinearGradient alphaGradient(rect.topLeft(), rect.bottomLeft()); +alphaGradient.setColorAt(0.0, Qt::transparent); +alphaGradient.setColorAt(0.5, Qt::black); +alphaGradient.setColorAt(1.0, Qt::transparent); +QGraphicsOpacityEffect *effect = new QGraphicsOpacityEffect; +effect->setOpacityMask(alphaGradient); +... +//! [2] |