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//! [0]
def draw(self, painter):
# Fully opaque draw directly without going through a pixmap.
if qFuzzyCompare(self.opacity, 1):
drawSource(painter)
return
# ...
//! [0]
//! [1]
def draw(self, painter):
# ...
offset = QPoint()
if self.sourceIsPixmap():
# No point in drawing in device coordinates (pixmap will be scaled anyways).
pixmap = sourcePixmap(Qt.LogicalCoordinates, offset)
...
painter.drawPixmap(offset, pixmap)
else:
# Draw pixmap in device coordinates to avoid pixmap scaling
pixmap = sourcePixmap(Qt.DeviceCoordinates, offset)
painter.setWorldTransform(QTransform())
# ...
painter.drawPixmap(offset, pixmap)
# ...
//! [1]
//! [2]
# ...
alphaGradient = QLinearGradient(rect.topLeft(), rect.bottomLeft())
alphaGradient.setColorAt(0.0, Qt.transparent)
alphaGradient.setColorAt(0.5, Qt.black)
alphaGradient.setColorAt(1.0, Qt.transparent)
effect = QGraphicsOpacityEffect()
effect.setOpacityMask(alphaGradient)
# ...
//! [2]
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