def paintEvent(self, event):
# draw the zoom rectangle more prominently
try:
drawRect = self.drawRect
self.drawRect = False
except AttributeError: # mpl 1.4
drawRect = self._drawRect
self._drawRect = None
# super needs this
if self.renderer is None:
self.renderer = self.get_renderer()
super(MplCanvas, self).paintEvent(event)
if drawRect:
try:
x, y, w, h = self.rect[0], self.rect[1], self.rect[
2], self.rect[3]
except TypeError: # mpl 1.4
x, y, w, h = drawRect
p = QtGui.QPainter(self)
p.setPen(QtGui.QPen(Qt.red, 2, Qt.DotLine))
p.drawRect(x, y, w, h)
p.end()
if self.roi_callback is not None:
self.roi_callback(self)
def get_painter(self, canvas):
p = QtGui.QPainter(canvas)
facecolor = mpl_to_qt4_color(self.plot_opts['facecolor'],
self.plot_opts['alpha'])
edgecolor = mpl_to_qt4_color(self.plot_opts['edgecolor'],
self.plot_opts['alpha'])
pen = QtGui.QPen(edgecolor)
pen.setWidth(self.plot_opts.get('edgewidth', 0))
p.setPen(pen)
p.setBrush(QtGui.QBrush(facecolor))
return p
