def renderItem(self, painter, widget, rect, fillBackground):
"""
Render a legend entry into a given rectangle.
:param QPainter painter: Painter
:param QWidget widget: Widget representing a legend entry
:param QRectF rect: Bounding rectangle
:param bool fillBackground: When true, fill rect with the widget background
"""
if fillBackground:
if widget.autoFillBackground() or widget.testAttribute(
Qt.WA_StyledBackground):
QwtPainter.drawBackground(painter, rect, widget)
label = widget # TODO: cast to QwtLegendLabel
if label is not None:
icon = label.data().icon()
sz = icon.defaultSize()
iconRect = QRectF(
rect.x() + label.margin(),
rect.center().y() - 0.5 * sz.height(),
sz.width(),
sz.height(),
)
icon.render(painter, iconRect, Qt.KeepAspectRatio)
titleRect = QRectF(rect)
titleRect.setX(iconRect.right() + 2 * label.spacing())
painter.setFont(label.font())
painter.setPen(label.palette().color(QPalette.Text))
label.drawText(painter,
titleRect) # TODO: cast label to QwtLegendLabel
def layoutLegend(self, options, rect):
"""
Find the geometry for the legend
:param options: Options how to layout the legend
:param QRectF rect: Rectangle where to place the legend
:return: Geometry for the legend
"""
hint = self.__data.layoutData.legend.hint
if self.__data.legendPos in (QwtPlot.LeftLegend, QwtPlot.RightLegend):
dim = min(
[hint.width(),
int(rect.width() * self.__data.legendRatio)])
if not (options & self.IgnoreScrollbars):
if hint.height() > rect.height():
dim += self.__data.layoutData.legend.hScrollExtent
else:
dim = min(
[hint.height(),
int(rect.height() * self.__data.legendRatio)])
dim = max([dim, self.__data.layoutData.legend.vScrollExtent])
legendRect = QRectF(rect)
if self.__data.legendPos == QwtPlot.LeftLegend:
legendRect.setWidth(dim)
elif self.__data.legendPos == QwtPlot.RightLegend:
legendRect.setX(rect.right() - dim)
legendRect.setWidth(dim)
elif self.__data.legendPos == QwtPlot.TopLegend:
legendRect.setHeight(dim)
elif self.__data.legendPos == QwtPlot.BottomLegend:
legendRect.setY(rect.bottom() - dim)
legendRect.setHeight(dim)
return legendRect
