Unify into a single update method: `.update_graphics_from_array()`
Tyler Goodlet
parent
cda6e2fab4
commit
f4fabc71c4
|
|
@ -838,8 +838,12 @@ class ChartPlotWidget(pg.PlotWidget):
|
|||
'''
|
||||
l, r = self.view_range()
|
||||
array = self._arrays[self.name]
|
||||
lbar = max(l, array[0]['index'])
|
||||
rbar = min(r, array[-1]['index'])
|
||||
start, stop = self._xrange = (
|
||||
array[0]['index'],
|
||||
array[-1]['index'],
|
||||
)
|
||||
lbar = max(l, start)
|
||||
rbar = min(r, stop)
|
||||
return l, lbar, rbar, r
|
||||
|
||||
def curve_width_pxs(
|
||||
|
|
@ -907,7 +911,7 @@ class ChartPlotWidget(pg.PlotWidget):
|
|||
return
|
||||
|
||||
xfirst, xlast = index[0], index[-1]
|
||||
brange = l, lbar, rbar, r = self.bars_range()
|
||||
l, lbar, rbar, r = self.bars_range()
|
||||
|
||||
marker_pos, l1_len = self.pre_l1_xs()
|
||||
end = xlast + l1_len + 1
|
||||
|
|
@ -986,7 +990,8 @@ class ChartPlotWidget(pg.PlotWidget):
|
|||
graphics = BarItems(
|
||||
self.linked,
|
||||
self.plotItem,
|
||||
pen_color=self.pen_color
|
||||
pen_color=self.pen_color,
|
||||
name=name,
|
||||
)
|
||||
|
||||
# adds all bar/candle graphics objects for each data point in
|
||||
|
|
@ -1175,11 +1180,13 @@ class ChartPlotWidget(pg.PlotWidget):
|
|||
)
|
||||
return last
|
||||
|
||||
def update_ohlc_from_array(
|
||||
def update_graphics_from_array(
|
||||
self,
|
||||
|
||||
graphics_name: str,
|
||||
array: np.ndarray,
|
||||
|
||||
array: Optional[np.ndarray] = None,
|
||||
array_key: Optional[str] = None,
|
||||
|
||||
**kwargs,
|
||||
|
||||
) -> pg.GraphicsObject:
|
||||
|
|
@ -1187,49 +1194,60 @@ class ChartPlotWidget(pg.PlotWidget):
|
|||
Update the named internal graphics from ``array``.
|
||||
|
||||
'''
|
||||
self._arrays[self.name] = array
|
||||
if array is not None:
|
||||
assert len(array)
|
||||
|
||||
data_key = array_key or graphics_name
|
||||
if graphics_name not in self._flows:
|
||||
data_key = self.name
|
||||
|
||||
if array is not None:
|
||||
# write array to internal graphics table
|
||||
self._arrays[data_key] = array
|
||||
else:
|
||||
array = self._arrays[data_key]
|
||||
|
||||
# array key and graphics "name" might be different..
|
||||
graphics = self._graphics[graphics_name]
|
||||
graphics.update_from_array(array, **kwargs)
|
||||
|
||||
# compute "in-view" indices
|
||||
l, lbar, rbar, r = self.bars_range()
|
||||
indexes = array['index']
|
||||
ifirst = indexes[0]
|
||||
ilast = indexes[-1]
|
||||
|
||||
lbar_i = max(l, ifirst) - ifirst
|
||||
rbar_i = min(r, ilast) - ifirst
|
||||
|
||||
# TODO: we could do it this way as well no?
|
||||
# to_draw = array[lbar - ifirst:(rbar - ifirst) + 1]
|
||||
in_view = array[lbar_i: rbar_i]
|
||||
|
||||
if not in_view.size:
|
||||
return graphics
|
||||
|
||||
def update_curve_from_array(
|
||||
self,
|
||||
if isinstance(graphics, BarItems):
|
||||
graphics.update_from_array(
|
||||
array,
|
||||
in_view,
|
||||
view_range=(lbar_i, rbar_i),
|
||||
|
||||
graphics_name: str,
|
||||
array: np.ndarray,
|
||||
array_key: Optional[str] = None,
|
||||
**kwargs,
|
||||
)
|
||||
|
||||
) -> pg.GraphicsObject:
|
||||
'''
|
||||
Update the named internal graphics from ``array``.
|
||||
|
||||
'''
|
||||
assert len(array)
|
||||
data_key = array_key or graphics_name
|
||||
|
||||
if graphics_name not in self._flows:
|
||||
self._arrays[self.name] = array
|
||||
else:
|
||||
self._arrays[data_key] = array
|
||||
|
||||
curve = self._graphics[graphics_name]
|
||||
|
||||
# NOTE: back when we weren't implementing the curve graphics
|
||||
# ourselves you'd have updates using this method:
|
||||
# curve.setData(y=array[graphics_name], x=array['index'], **kwargs)
|
||||
|
||||
# NOTE: graphics **must** implement a diff based update
|
||||
# operation where an internal ``FastUpdateCurve._xrange`` is
|
||||
# used to determine if the underlying path needs to be
|
||||
# pre/ap-pended.
|
||||
curve.update_from_array(
|
||||
graphics.update_from_array(
|
||||
x=array['index'],
|
||||
y=array[data_key],
|
||||
|
||||
x_iv=in_view['index'],
|
||||
y_iv=in_view[data_key],
|
||||
view_range=(lbar_i, rbar_i),
|
||||
|
||||
**kwargs
|
||||
)
|
||||
|
||||
return curve
|
||||
return graphics
|
||||
|
||||
# def _label_h(self, yhigh: float, ylow: float) -> float:
|
||||
# # compute contents label "height" in view terms
|
||||
|
|
@ -1260,6 +1278,9 @@ class ChartPlotWidget(pg.PlotWidget):
|
|||
|
||||
# print(f"bounds (ylow, yhigh): {(ylow, yhigh)}")
|
||||
|
||||
# TODO: pretty sure we can just call the cursor
|
||||
# directly not? i don't wee why we need special "signal proxies"
|
||||
# for this lul..
|
||||
def enterEvent(self, ev): # noqa
|
||||
# pg.PlotWidget.enterEvent(self, ev)
|
||||
self.sig_mouse_enter.emit(self)
|
||||
|
|
|
|||
Loading…
Reference in New Issue