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Code Issues 10 Pull Requests 14 Packages Projects Releases Wiki Activity

Fix bottom axis check logic for overlays, try out some px perfection

vlm_plotz
Tyler Goodlet 2022-01-21 08:39:03 -05:00
parent 00b1b2a10c
commit edd227228c
1 changed files with 36 additions and 23 deletions
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59
piker/ui/_cursor.py
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@ -369,7 +369,13 @@ class Cursor(pg.GraphicsObject):
self, self,
plot: 'ChartPlotWidget', # noqa plot: 'ChartPlotWidget', # noqa
digits: int = 0, digits: int = 0,
) -> None: ) -> None:
'''
Add chart to tracked set such that a cross-hair and possibly
curve tracking cursor can be drawn on the plot.
'''
# add ``pg.graphicsItems.InfiniteLine``s # add ``pg.graphicsItems.InfiniteLine``s
# vertical and horizonal lines and a y-axis label # vertical and horizonal lines and a y-axis label
@ -382,7 +388,8 @@ class Cursor(pg.GraphicsObject):
yl = YAxisLabel( yl = YAxisLabel(
chart=plot, chart=plot,
parent=plot.getAxis('right'), # parent=plot.getAxis('right'),
parent=plot.pi_overlay.get_axis(plot.plotItem, 'right'),
digits=digits or self.digits, digits=digits or self.digits,
opacity=_ch_label_opac, opacity=_ch_label_opac,
bg_color=self.label_color, bg_color=self.label_color,
@ -424,19 +431,25 @@ class Cursor(pg.GraphicsObject):
# ONLY create an x-axis label for the cursor # ONLY create an x-axis label for the cursor
# if this plot owns the 'bottom' axis. # if this plot owns the 'bottom' axis.
if 'bottom' in plot.plotItem.axes: # if 'bottom' in plot.plotItem.axes:
self.xaxis_label = XAxisLabel( if plot.linked.xaxis_chart is plot:
xlabel = self.xaxis_label = XAxisLabel(
parent=self.plots[plot_index].getAxis('bottom'), parent=self.plots[plot_index].getAxis('bottom'),
# parent=self.plots[plot_index].pi_overlay.get_axis(plot.plotItem, 'bottom'),
opacity=_ch_label_opac, opacity=_ch_label_opac,
bg_color=self.label_color, bg_color=self.label_color,
) )
# place label off-screen during startup # place label off-screen during startup
self.xaxis_label.setPos(self.plots[0].mapFromView(QPointF(0, 0))) xlabel.setPos(
self.plots[0].mapFromView(QPointF(0, 0))
)
xlabel.show()
def add_curve_cursor( def add_curve_cursor(
self, self,
plot: 'ChartPlotWidget', # noqa plot: 'ChartPlotWidget', # noqa
curve: 'PlotCurveItem', # noqa curve: 'PlotCurveItem', # noqa
) -> LineDot: ) -> LineDot:
# if this plot contains curves add line dot "cursors" to denote # if this plot contains curves add line dot "cursors" to denote
# the current sample under the mouse # the current sample under the mouse
@ -493,24 +506,27 @@ class Cursor(pg.GraphicsObject):
ix = round(x) # since bars are centered around index ix = round(x) # since bars are centered around index
# px perfect...
line_offset = self._lw / 2
# round y value to nearest tick step # round y value to nearest tick step
m = self._y_incr_mult m = self._y_incr_mult
iy = round(y * m) / m iy = round(y * m) / m
vl_y = iy - line_offset
# px perfect...
line_offset = self._lw / 2
# update y-range items # update y-range items
if iy != last_iy: if iy != last_iy:
if self._y_label_update: if self._y_label_update:
self.graphics[self.active_plot]['yl'].update_label( self.graphics[self.active_plot]['yl'].update_label(
abs_pos=plot.mapFromView(QPointF(ix, iy)), # abs_pos=plot.mapFromView(QPointF(ix, iy)),
abs_pos=plot.mapFromView(QPointF(ix, vl_y)),
value=iy value=iy
) )
# only update horizontal xhair line if label is enabled # only update horizontal xhair line if label is enabled
self.graphics[plot]['hl'].setY(iy) # self.graphics[plot]['hl'].setY(iy)
self.graphics[plot]['hl'].setY(vl_y)
# update all trackers # update all trackers
for item in self._trackers: for item in self._trackers:
@ -541,21 +557,18 @@ class Cursor(pg.GraphicsObject):
# left axis offset width for calcuating # left axis offset width for calcuating
# absolute x-axis label placement. # absolute x-axis label placement.
left_axis_width = 0 left_axis_width = 0
left = axes.get('left')
if left:
left_axis_width = left['item'].width()
if 'bottom' in axes: # map back to abs (label-local) coordinates
self.xaxis_label.update_label(
left = axes.get('left') abs_pos=(
if left: plot.mapFromView(QPointF(vl_x, iy)) -
left_axis_width = left['item'].width() QPointF(left_axis_width, 0)
),
# map back to abs (label-local) coordinates value=ix,
self.xaxis_label.update_label( )
abs_pos=(
plot.mapFromView(QPointF(vl_x, iy)) -
QPointF(left_axis_width, 0)
),
value=ix,
)
self._datum_xy = ix, iy self._datum_xy = ix, iy