def setCornerRects(self, path):
pos = QPointF(0.0, 0.0)
for i in range(path.elementCount()):
el = path.elementAt(i)
if el.type in (QPainterPath.MoveToElement, QPainterPath.LineToElement):
pos.setX(el.x)
pos.setY(el.y)
elif el.type == QPainterPath.CurveToElement:
r = QRectF(pos, QPointF(el.x, el.y))
self.clipRects += [r.normalized()]
pos.setX(el.x)
pos.setY(el.y)
elif el.type == QPainterPath.CurveToDataElement:
if self.clipRects:
r = self.clipRects[-1]
r.setCoords(
min([r.left(), el.x]),
min([r.top(), el.y]),
max([r.right(), el.x]),
max([r.bottom(), el.y]),
)
self.clipRects[-1] = r.normalized()
def drawLabel(self, painter, canvasRect, pos):
"""
Align and draw the text label of the marker
:param QPainter painter: Painter
:param QRectF canvasRect: Contents rectangle of the canvas in painter coordinates
:param QPointF pos: Position of the marker, translated into widget coordinates
.. seealso::
:py:meth:`drawLabel()`,
:py:meth:`qwt.symbol.QwtSymbol.drawSymbol()`
"""
if self.__data.label.isEmpty():
return
align = Qt.Alignment(self.__data.labelAlignment)
alignPos = QPointF(pos)
symbolOff = QSizeF(0, 0)
if self.__data.style == QwtPlotMarker.VLine:
# In VLine-style the y-position is pointless and
# the alignment flags are relative to the canvas
if bool(self.__data.labelAlignment & Qt.AlignTop):
alignPos.setY(canvasRect.top())
align &= ~Qt.AlignTop
align |= Qt.AlignBottom
elif bool(self.__data.labelAlignment & Qt.AlignBottom):
# In HLine-style the x-position is pointless and
# the alignment flags are relative to the canvas
alignPos.setY(canvasRect.bottom() - 1)
align &= ~Qt.AlignBottom
align |= Qt.AlignTop
else:
alignPos.setY(canvasRect.center().y())
elif self.__data.style == QwtPlotMarker.HLine:
if bool(self.__data.labelAlignment & Qt.AlignLeft):
alignPos.setX(canvasRect.left())
align &= ~Qt.AlignLeft
align |= Qt.AlignRight
elif bool(self.__data.labelAlignment & Qt.AlignRight):
alignPos.setX(canvasRect.right() - 1)
align &= ~Qt.AlignRight
align |= Qt.AlignLeft
else:
alignPos.setX(canvasRect.center().x())
else:
if self.__data.symbol and self.__data.symbol.style(
) != QwtSymbol.NoSymbol:
symbolOff = self.__data.symbol.size() + QSizeF(1, 1)
symbolOff /= 2
pw2 = self.__data.pen.widthF() / 2.0
if pw2 == 0.0:
pw2 = 0.5
spacing = self.__data.spacing
xOff = max([pw2, symbolOff.width()])
yOff = max([pw2, symbolOff.height()])
textSize = self.__data.label.textSize(painter.font())
if align & Qt.AlignLeft:
alignPos.setX(alignPos.x() - (xOff + spacing))
if self.__data.labelOrientation == Qt.Vertical:
alignPos.setX(alignPos.x() - textSize.height())
else:
alignPos.setX(alignPos.x() - textSize.width())
elif align & Qt.AlignRight:
alignPos.setX(alignPos.x() + xOff + spacing)
else:
if self.__data.labelOrientation == Qt.Vertical:
alignPos.setX(alignPos.x() - textSize.height() / 2)
else:
alignPos.setX(alignPos.x() - textSize.width() / 2)
if align & Qt.AlignTop:
alignPos.setY(alignPos.y() - (yOff + spacing))
if self.__data.labelOrientation != Qt.Vertical:
alignPos.setY(alignPos.y() - textSize.height())
elif align & Qt.AlignBottom:
alignPos.setY(alignPos.y() + yOff + spacing)
if self.__data.labelOrientation == Qt.Vertical:
alignPos.setY(alignPos.y() + textSize.width())
else:
if self.__data.labelOrientation == Qt.Vertical:
alignPos.setY(alignPos.y() + textSize.width() / 2)
else:
alignPos.setY(alignPos.y() - textSize.height() / 2)
painter.translate(alignPos.x(), alignPos.y())
if self.__data.labelOrientation == Qt.Vertical:
painter.rotate(-90.0)
textRect = QRectF(0, 0, textSize.width(), textSize.height())
self.__data.label.draw(painter, textRect)