class HistogramLineMarker (object):
"""Helper class implementing a line marker for a histogram plot""";
def __init__ (self,plot,color="black",linestyle=Qt.DotLine,align=Qt.AlignBottom|Qt.AlignRight,z=90,label="",zlabel=None,linewidth=1,spacing=2,
yaxis=QwtPlot.yRight):
self.line = TiggerPlotCurve();
self.color = color = color if isinstance(color,QColor) else QColor(color);
self.line.setPen(QPen(color,linewidth,linestyle));
self.marker = TiggerPlotMarker();
self.marker.setLabelAlignment(align);
try:
self.marker.setSpacing(spacing);
except AttributeError:
pass;
self.setText(label);
self.line.setZ(z);
self.marker.setZ(zlabel if zlabel is not None else z);
# set axes -- using yRight, since that is the "markup" z-axis
self.line.setAxis(QwtPlot.xBottom,yaxis);
self.marker.setAxis(QwtPlot.xBottom,yaxis);
# attach to plot
self.line.attach(plot);
self.marker.attach(plot);
def show (self):
self.line.show();
self.marker.show();
def hide (self):
self.line.hide();
self.marker.hide();
def setText (self,text):
label = QwtText(text);
label.setColor(self.color);
self.marker.setLabel(label);
