def paintEvent(self, event):
painter = QPainter(self)
painter.setClipRegion(event.region())
opt = QStyleOption()
opt.initFrom(self)
self.style().drawPrimitive(QStyle.PE_Widget, opt, painter, self)
self.draw(painter)
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 not recorder.border.rectList.isEmpty():
return qwtCombinePathList(rect, recorder.border.pathlist)
elif self.__data.borderRadius > 0.:
fw2 = self.frameWidth() * .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 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 not recorder.border.rectList.isEmpty():
return qwtCombinePathList(rect, recorder.border.pathlist)
elif self.__data.borderRadius > 0.:
fw2 = self.frameWidth()*.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 fillPixmap(self, widget, pixmap, offset=None):
"""
Fill a pixmap with the content of a widget
In Qt >= 5.0 `QPixmap.fill()` is a nop, in Qt 4.x it is buggy
for backgrounds with gradients. Thus `fillPixmap()` offers
an alternative implementation.
:param QWidget widget: Widget
:param QPixmap pixmap: Pixmap to be filled
:param QPoint offset: Offset
.. seealso::
:py:meth:`QPixmap.fill()`
"""
if offset is None:
offset = QPoint()
rect = QRect(offset, pixmap.size())
painter = QPainter(pixmap)
painter.translate(-offset)
autoFillBrush = widget.palette().brush(widget.backgroundRole())
if not (widget.autoFillBackground() and autoFillBrush.isOpaque()):
bg = widget.palette().brush(QPalette.Window)
qwtFillRect(widget, painter, rect, bg)
if widget.autoFillBackground():
qwtFillRect(widget, painter, rect, autoFillBrush)
if widget.testAttribute(Qt.WA_StyledBackground):
painter.setClipRegion(rect)
opt = QStyleOption()
opt.initFrom(widget)
widget.style().drawPrimitive(QStyle.PE_Widget, opt, painter,
widget)
def fillPixmap(self, widget, pixmap, offset=None):
"""
Fill a pixmap with the content of a widget
In Qt >= 5.0 `QPixmap.fill()` is a nop, in Qt 4.x it is buggy
for backgrounds with gradients. Thus `fillPixmap()` offers
an alternative implementation.
:param QWidget widget: Widget
:param QPixmap pixmap: Pixmap to be filled
:param QPoint offset: Offset
.. seealso::
:py:meth:`QPixmap.fill()`
"""
if offset is None:
offset = QPoint()
rect = QRect(offset, pixmap.size())
painter = QPainter(pixmap)
painter.translate(-offset)
autoFillBrush = widget.palette().brush(widget.backgroundRole())
if not (widget.autoFillBackground() and autoFillBrush.isOpaque()):
bg = widget.palette().brush(QPalette.Window)
qwtFillRect(widget, painter, rect, bg)
if widget.autoFillBackground():
qwtFillRect(widget, painter, rect, autoFillBrush)
if widget.testAttribute(Qt.WA_StyledBackground):
painter.setClipRegion(rect)
opt = QStyleOption()
opt.initFrom(widget)
widget.style().drawPrimitive(QStyle.PE_Widget, opt,
painter, widget)
def paintEvent(self, event):
painter = QPainter(self)
painter.setClipRegion(event.region())
opt = QStyleOption()
opt.initFrom(self)
self.style().drawPrimitive(QStyle.PE_Widget, opt, painter, self)
self.draw(painter)
def drawBackground(self, painter, rect, widget):
if widget.testAttribute(Qt.WA_StyledBackground):
opt = QStyleOption()
opt.initFrom(widget)
opt.rect = rect.toAlignedRect()
widget.style().drawPrimitive(QStyle.PE_Widget, opt,
painter, widget)
else:
brush = widget.palette().brush(widget.backgroundRole())
painter.fillRect(rect, brush)
def drawBackground(self, painter, rect, widget):
if widget.testAttribute(Qt.WA_StyledBackground):
opt = QStyleOption()
opt.initFrom(widget)
opt.rect = rect.toAlignedRect()
widget.style().drawPrimitive(QStyle.PE_Widget, opt, painter,
widget)
else:
brush = widget.palette().brush(widget.backgroundRole())
painter.fillRect(rect, brush)
def fillPixmap(self, widget, pixmap, offset=None):
if offset is None:
offset = QPoint()
rect = QRect(offset, pixmap.size())
painter = QPainter(pixmap)
painter.translate(-offset)
autoFillBrush = widget.palette().brush(widget.backgroundRole())
if not (widget.autoFillBackground() and autoFillBrush.isOpaque()):
bg = widget.palette().brush(QPalette.Window)
qwtFillRect(widget, painter, rect, bg)
if widget.autoFillBackground():
qwtFillRect(widget, painter, rect, autoFillBrush)
if widget.testAttribute(Qt.WA_StyledBackground):
painter.setClipRegion(rect)
opt = QStyleOption()
opt.initFrom(widget)
widget.style().drawPrimitive(QStyle.PE_Widget, opt,
painter, widget)
def fillPixmap(self, widget, pixmap, offset=None):
if offset is None:
offset = QPoint()
rect = QRect(offset, pixmap.size())
painter = QPainter(pixmap)
painter.translate(-offset)
autoFillBrush = widget.palette().brush(widget.backgroundRole())
if not (widget.autoFillBackground() and autoFillBrush.isOpaque()):
bg = widget.palette().brush(QPalette.Window)
qwtFillRect(widget, painter, rect, bg)
if widget.autoFillBackground():
qwtFillRect(widget, painter, rect, autoFillBrush)
if widget.testAttribute(Qt.WA_StyledBackground):
painter.setClipRegion(rect)
opt = QStyleOption()
opt.initFrom(widget)
widget.style().drawPrimitive(QStyle.PE_Widget, opt, painter,
widget)
def updateStyleSheetInfo(self):
if not self.testAttribute(Qt.WA_StyledBackground):
return
recorder = QwtStyleSheetRecorder(self.size())
painter = QPainter(recorder)
opt = QStyleOption()
opt.initFrom(self)
self.style().drawPrimitive(QStyle.PE_Widget, opt, painter, self)
painter.end()
self.__data.styleSheet.hasBorder = not recorder.border.rectList.isEmpty()
self.__data.styleSheet.cornerRects = recorder.clipRects
if recorder.background.path.isEmpty():
if not recorder.border.rectList.isEmpty():
self.__data.styleSheet.borderPath =\
qwtCombinePathList(self.rect(), recorder.border.pathlist)
else:
self.__data.styleSheet.borderPath = recorder.background.path
self.__data.styleSheet.background.brush = recorder.background.brush
self.__data.styleSheet.background.origin = recorder.background.origin
def updateStyleSheetInfo(self):
if not self.testAttribute(Qt.WA_StyledBackground):
return
recorder = QwtStyleSheetRecorder(self.size())
painter = QPainter(recorder)
opt = QStyleOption()
opt.initFrom(self)
self.style().drawPrimitive(QStyle.PE_Widget, opt, painter, self)
painter.end()
self.__data.styleSheet.hasBorder = not recorder.border.rectList.isEmpty(
)
self.__data.styleSheet.cornerRects = recorder.clipRects
if recorder.background.path.isEmpty():
if not recorder.border.rectList.isEmpty():
self.__data.styleSheet.borderPath =\
qwtCombinePathList(self.rect(), recorder.border.pathlist)
else:
self.__data.styleSheet.borderPath = recorder.background.path
self.__data.styleSheet.background.brush = recorder.background.brush
self.__data.styleSheet.background.origin = recorder.background.origin
def borderPath(self, rect):
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 not recorder.border.rectList.isEmpty():
return qwtCombinePathList(rect, recorder.border.pathlist)
elif self.__data.borderRadius > 0.:
fw2 = self.frameWidth()*.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 borderPath(self, rect):
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 not recorder.border.rectList.isEmpty():
return qwtCombinePathList(rect, recorder.border.pathlist)
elif self.__data.borderRadius > 0.:
fw2 = self.frameWidth() * .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 = rect.toAlignedRect()
widget.style().drawPrimitive(QStyle.PE_Widget, opt, painter,
widget)
else:
brush = widget.palette().brush(widget.backgroundRole())
painter.fillRect(rect, brush)
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 = rect.toAlignedRect()
widget.style().drawPrimitive(QStyle.PE_Widget, opt,
painter, widget)
else:
brush = widget.palette().brush(widget.backgroundRole())
painter.fillRect(rect, brush)
def qwtDrawStyledBackground(w, painter):
opt = QStyleOption()
opt.initFrom(w)
w.style().drawPrimitive(QStyle.PE_Widget, opt, painter, w)
def buttonShift(w):
option = QStyleOption()
option.initFrom(w)
ph = w.style().pixelMetric(QStyle.PM_ButtonShiftHorizontal, option, w)
pv = w.style().pixelMetric(QStyle.PM_ButtonShiftVertical, option, w)
return QSize(ph, pv)
def qwtDrawStyledBackground(w, painter):
opt = QStyleOption()
opt.initFrom(w)
w.style().drawPrimitive(QStyle.PE_Widget, opt, painter, w)
def buttonShift(w):
option = QStyleOption()
option.initFrom(w)
ph = w.style().pixelMetric(QStyle.PM_ButtonShiftHorizontal, option, w)
pv = w.style().pixelMetric(QStyle.PM_ButtonShiftVertical, option, w)
return QSize(ph, pv)