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| author | Bjørn Erik Nilsen <bjorn.nilsen@nokia.com> | 2009-08-28 08:31:31 (GMT) |
|---|---|---|
| committer | Bjørn Erik Nilsen <bjorn.nilsen@nokia.com> | 2009-08-28 14:34:16 (GMT) |
| commit | d6d49aa56750359012cdf722df27b0a1c3e5b2aa (patch) | |
| tree | eac4337828535ff4b8f120ffb03b77efd5a0d812 /doc/src | |
| parent | c3df6e12309164a6fa0cf76546a354c5d59c5374 (diff) | |
| download | Qt-d6d49aa56750359012cdf722df27b0a1c3e5b2aa.zip Qt-d6d49aa56750359012cdf722df27b0a1c3e5b2aa.tar.gz Qt-d6d49aa56750359012cdf722df27b0a1c3e5b2aa.tar.bz2 | |
Add support for setting an opacity mask on QGraphicsOpacityEffect.
Opacity masks enable you to make portions of an element transparent.
More information about opacity masks here:
http://msdn.microsoft.com/en-us/library/ms743320.aspx
Reviewed-by: Samuel
Diffstat (limited to 'doc/src')
| -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] |