def radial_gradient(color, color_light=50):
"""
radial_gradient(QColor, QColor)
radial_gradient(QColor, int)
Return a radial gradient. `color_light` can be a QColor or an int.
In the later case the light color is derived from `color` using
`saturated(color, color_light)`.
"""
if not isinstance(color_light, QColor):
color_light = saturated(color, color_light)
gradient = QRadialGradient(0.5, 0.5, 0.5)
gradient.setColorAt(0.0, color_light)
gradient.setColorAt(0.5, color_light)
gradient.setColorAt(1.0, color)
gradient.setCoordinateMode(QRadialGradient.ObjectBoundingMode)
return gradient
def rebuildDataBrushIfNeeded(self):
if not self.m_rebuildBrush or not self.m_gradientData or self.m_barStyle == self.BarStyle.LINE:
return
self.m_rebuildBrush = False
p = self.palette()
if self.m_barStyle == self.BarStyle.EXPAND:
dataBrush = QRadialGradient(0.5, 0.5, 0.5, 0.5, 0.5)
dataBrush.setCoordinateMode(QGradient.StretchToDeviceMode)
for i in range(0, len(self.m_gradientData)):
dataBrush.setColorAt(self.m_gradientData[i][0], self.m_gradientData[i][1])
p.setBrush(QPalette.Highlight, dataBrush)
else:
dataBrush = QConicalGradient(QPointF(0.5, 0.5), self.m_nullPosition)
dataBrush.setCoordinateMode(QGradient.StretchToDeviceMode)
for i in range(0, len(self.m_gradientData)):
dataBrush.setColorAt(1 - self.m_gradientData[i][0], self.m_gradientData[i][1])
p.setBrush(QPalette.Highlight, dataBrush)
self.setPalette(p)