def borderPath(self, rect):
"""
Calculate the painter path for a styled or rounded border
When the canvas has no styled background or rounded borders
the painter path is empty.
:param QRect rect: Bounding rectangle of the canvas
:return: Painter path, that can be used for clipping
"""
if self.testAttribute(Qt.WA_StyledBackground):
recorder = QwtStyleSheetRecorder(rect.size())
painter = QPainter(recorder)
opt = QStyleOption()
opt.initFrom(self)
opt.rect = rect
self.style().drawPrimitive(QStyle.PE_Widget, opt, painter, self)
painter.end()
if not recorder.background.path.isEmpty():
return recorder.background.path
if len(recorder.border.rectList) > 0:
return qwtCombinePathList(rect, recorder.border.pathlist)
elif self.__data.borderRadius > 0.0:
fw2 = self.frameWidth() * 0.5
r = QRectF(rect).adjusted(fw2, fw2, -fw2, -fw2)
path = QPainterPath()
path.addRoundedRect(r, self.__data.borderRadius, self.__data.borderRadius)
return path
return QPainterPath()
def drawBackground(self, painter, rect, widget):
"""
Fill rect with the background of a widget
:param QPainter painter: Painter
:param QRectF rect: Rectangle to be filled
:param QWidget widget: Widget
.. seealso::
:py:data:`QStyle.PE_Widget`, :py:meth:`QWidget.backgroundRole()`
"""
if widget.testAttribute(Qt.WA_StyledBackground):
opt = QStyleOption()
opt.initFrom(widget)
opt.rect = QRectF(rect).toAlignedRect()
widget.style().drawPrimitive(QStyle.PE_Widget, opt, painter,
widget)
else:
brush = widget.palette().brush(widget.backgroundRole())
painter.fillRect(rect, brush)