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Use dashed crosshair, simplify x-axis alloc

its_happening
Tyler Goodlet 2020-08-31 17:17:20 -04:00
parent 19609178ce
commit 30d8e096c6
1 changed files with 21 additions and 18 deletions
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39
piker/ui/_graphics.py
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@ -19,6 +19,7 @@ from ._axes import YAxisLabel, XAxisLabel
_mouse_rate_limit = 30 _mouse_rate_limit = 30
_debounce_delay = 10 _debounce_delay = 10
_ch_label_opac = 1
class CrossHair(pg.GraphicsObject): class CrossHair(pg.GraphicsObject):
@ -29,7 +30,13 @@ class CrossHair(pg.GraphicsObject):
digits: int = 0 digits: int = 0
) -> None: ) -> None:
super().__init__() super().__init__()
# XXX: not sure why these are instance variables?
# It's not like we can change them on the fly..?
self.pen = pg.mkPen( self.pen = pg.mkPen(
color=hcolor('default'),
style=QtCore.Qt.DashLine,
)
self.lines_pen = pg.mkPen(
color='#a9a9a9', # gray? color='#a9a9a9', # gray?
style=QtCore.Qt.DashLine, style=QtCore.Qt.DashLine,
) )
@ -46,12 +53,13 @@ class CrossHair(pg.GraphicsObject):
) -> None: ) -> None:
# 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
vl = plot.addLine(x=0, pen=self.pen, movable=False) vl = plot.addLine(x=0, pen=self.lines_pen, movable=False)
hl = plot.addLine(y=0, pen=self.pen, movable=False) hl = plot.addLine(y=0, pen=self.lines_pen, movable=False)
yl = YAxisLabel( yl = YAxisLabel(
parent=plot.getAxis('right'), parent=plot.getAxis('right'),
digits=digits or self.digits, digits=digits or self.digits,
opacity=0.7, opacity=_ch_label_opac,
color=self.pen,
) )
# TODO: checkout what ``.sigDelayed`` can be used for # TODO: checkout what ``.sigDelayed`` can be used for
@ -82,21 +90,16 @@ class CrossHair(pg.GraphicsObject):
} }
self.plots.append(plot) self.plots.append(plot)
# determine where to place x-axis label # Determine where to place x-axis label.
if _xaxis_at == 'bottom': # Place below the last plot by default, ow
# place below the last plot # keep x-axis right below main chart
self.xaxis_label = XAxisLabel( plot_index = -1 if _xaxis_at == 'bottom' else 0
parent=self.plots[-1].getAxis('bottom'),
opacity=0.7 self.xaxis_label = XAxisLabel(
) parent=self.plots[plot_index].getAxis('bottom'),
else: opacity=_ch_label_opac,
# keep x-axis right below main chart color=self.pen,
first = self.plots[0] )
xaxis = first.getAxis('bottom')
self.xaxis_label = XAxisLabel(
parent=xaxis,
opacity=0.7,
)
def mouseAction(self, action, plot): # noqa def mouseAction(self, action, plot): # noqa
if action == 'Enter': if action == 'Enter':