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Allow y-label pinning on cross hair hide

basic_orders
Tyler Goodlet 2021-03-13 17:29:35 -05:00
parent 9798689961
commit 887c305d46
1 changed files with 37 additions and 15 deletions
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52
piker/ui/_graphics/_cursor.py
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@ -119,17 +119,18 @@ _corner_anchors = {
'bottom': 1,
'right': 1,
}
_y_margin = 5
# XXX: fyi naming here is confusing / opposite to coords
_corner_margins = {
('top', 'left'): (-4, -5),
('top', 'right'): (4, -5),
('top', 'left'): (-4, -_y_margin),
('top', 'right'): (4, -_y_margin),
('bottom', 'left'): (-4, lambda font_size: font_size * 2),
('bottom', 'right'): (4, lambda font_size: font_size * 2),
('bottom', 'left'): (-4, lambda font_size: font_size + 2*_y_margin),
('bottom', 'right'): (4, lambda font_size: font_size + 2*_y_margin),
}
# TODO: change this into a ``pg.TextItem``...
# TODO: change this into our own ``Label``
class ContentsLabel(pg.LabelItem):
"""Label anchored to a ``ViewBox`` typically for displaying
datum-wise points from the "viewed" contents.
@ -235,6 +236,11 @@ class Cursor(pg.GraphicsObject):
# line width in view coordinates
self._lw = self.pixelWidth() * self.lines_pen.width()
# xhair label's color name
self.label_color: str = 'default'
self._y_label_update: bool = True
def add_hovered(
self,
item: pg.GraphicsObject,
@ -257,14 +263,12 @@ class Cursor(pg.GraphicsObject):
hl.setCacheMode(QtGui.QGraphicsItem.DeviceCoordinateCache)
hl.hide()
label_color = 'default'
yl = YAxisLabel(
chart=plot,
parent=plot.getAxis('right'),
digits=digits or self.digits,
opacity=_ch_label_opac,
bg_color=label_color,
bg_color=self.label_color,
)
yl.hide() # on startup if mouse is off screen
@ -304,7 +308,7 @@ class Cursor(pg.GraphicsObject):
self.xaxis_label = XAxisLabel(
parent=self.plots[plot_index].getAxis('bottom'),
opacity=_ch_label_opac,
bg_color=label_color,
bg_color=self.label_color,
)
# place label off-screen during startup
self.xaxis_label.setPos(self.plots[0].mapFromView(QPointF(0, 0)))
@ -373,7 +377,7 @@ class Cursor(pg.GraphicsObject):
# px perfect...
line_offset = self._lw / 2
if iy != last_iy:
if iy != last_iy and self._y_label_update:
# update y-range items
self.graphics[plot]['hl'].setY(iy + line_offset)
@ -422,16 +426,34 @@ class Cursor(pg.GraphicsObject):
return self.plots[0].boundingRect()
def show_xhair(self) -> None:
plot = self.active_plot
g = self.graphics[self.active_plot]
# show horiz line and y-label
g['hl'].show()
g['vl'].show()
g['yl'].show()
def hide_xhair(self) -> None:
plot = self.active_plot
yl = g['yl']
# yl.fg_color = pg.mkColor(hcolor('black'))
# yl.bg_color = pg.mkColor(hcolor(self.label_color))
yl.show()
def hide_xhair(
self,
hide_label: bool = False,
y_label_level: float = None,
fg_color: str = None,
# bg_color: str = 'papas_special',
) -> None:
g = self.graphics[self.active_plot]
g['hl'].hide()
g['vl'].hide()
g['yl'].hide()
yl = g['yl']
if hide_label:
yl.hide()
elif y_label_level:
yl.update_from_data(0, y_label_level)
if fg_color is not None:
yl.fg_color = pg.mkColor(hcolor(fg_color))
yl.bg_color = pg.mkColor(hcolor('papas_special'))