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Only update x-axis cursor if chart has a 'bottom' axis

plotitem_overlays
Tyler Goodlet 2022-01-24 15:14:06 -05:00
parent 9e18afe0d7
commit 1ccff37677
1 changed files with 20 additions and 16 deletions
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36
piker/ui/_cursor.py
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@ -418,13 +418,16 @@ class Cursor(pg.GraphicsObject):
# keep x-axis right below main chart # keep x-axis right below main chart
plot_index = -1 if _xaxis_at == 'bottom' else 0 plot_index = -1 if _xaxis_at == 'bottom' else 0
self.xaxis_label = XAxisLabel( # ONLY create an x-axis label for the cursor
parent=self.plots[plot_index].getAxis('bottom'), # if this plot owns the 'bottom' axis.
opacity=_ch_label_opac, if 'bottom' in plot.plotItem.axes:
bg_color=self.label_color, self.xaxis_label = XAxisLabel(
) parent=self.plots[plot_index].getAxis('bottom'),
# place label off-screen during startup opacity=_ch_label_opac,
self.xaxis_label.setPos(self.plots[0].mapFromView(QPointF(0, 0))) bg_color=self.label_color,
)
# place label off-screen during startup
self.xaxis_label.setPos(self.plots[0].mapFromView(QPointF(0, 0)))
def add_curve_cursor( def add_curve_cursor(
self, self,
@ -525,17 +528,18 @@ class Cursor(pg.GraphicsObject):
for cursor in opts.get('cursors', ()): for cursor in opts.get('cursors', ()):
cursor.setIndex(ix) cursor.setIndex(ix)
# update the label on the bottom of the crosshair # update the label on the bottom of the crosshair
self.xaxis_label.update_label( if 'bottom' in plot.plotItem.axes:
self.xaxis_label.update_label(
# XXX: requires: # XXX: requires:
# https://github.com/pyqtgraph/pyqtgraph/pull/1418 # https://github.com/pyqtgraph/pyqtgraph/pull/1418
# otherwise gobbles tons of CPU.. # otherwise gobbles tons of CPU..
# map back to abs (label-local) coordinates # map back to abs (label-local) coordinates
abs_pos=plot.mapFromView(QPointF(ix + line_offset, iy)), abs_pos=plot.mapFromView(QPointF(ix + line_offset, iy)),
value=ix, value=ix,
) )
self._datum_xy = ix, iy self._datum_xy = ix, iy