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)