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Enable/disable vlm chart yranging (TO SQUASH)

epoch_indexing_and_dataviz_layer
Tyler Goodlet 2022-11-30 12:37:34 -05:00
parent eb9ab20646
commit 5affad942f
1 changed files with 24 additions and 29 deletions
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53
piker/ui/_fsp.py
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@ -79,14 +79,14 @@ def has_vlm(ohlcv: ShmArray) -> bool:
def update_fsp_chart( def update_fsp_chart(
chart: ChartPlotWidget, chart: ChartPlotWidget,
flow, viz,
graphics_name: str, graphics_name: str,
array_key: Optional[str], array_key: Optional[str],
**kwargs, **kwargs,
) -> None: ) -> None:
shm = flow.shm shm = viz.shm
if not shm: if not shm:
return return
@ -666,7 +666,7 @@ async def open_vlm_displays(
shm = ohlcv shm = ohlcv
ohlc_chart = linked.chart ohlc_chart = linked.chart
chart = linked.add_plot( vlm_chart = linked.add_plot(
name='volume', name='volume',
shm=shm, shm=shm,
flume=flume, flume=flume,
@ -682,10 +682,12 @@ async def open_vlm_displays(
# the curve item internals are pretty convoluted. # the curve item internals are pretty convoluted.
style='step', style='step',
) )
vlm_chart.view.enable_auto_yrange()
# back-link the volume chart to trigger y-autoranging # back-link the volume chart to trigger y-autoranging
# in the ohlc (parent) chart. # in the ohlc (parent) chart.
ohlc_chart.view.enable_auto_yrange( ohlc_chart.view.enable_auto_yrange(
src_vb=chart.view, src_vb=vlm_chart.view,
) )
# force 0 to always be in view # force 0 to always be in view
@ -707,7 +709,7 @@ async def open_vlm_displays(
''' '''
mx = 0 mx = 0
for name in names: for name in names:
ymn, ymx = chart.maxmin(name=name) ymn, ymx = vlm_chart.maxmin(name=name)
mx = max(mx, ymx) mx = max(mx, ymx)
return 0, mx return 0, mx
@ -715,34 +717,33 @@ async def open_vlm_displays(
# TODO: fix the x-axis label issue where if you put # TODO: fix the x-axis label issue where if you put
# the axis on the left it's totally not lined up... # the axis on the left it's totally not lined up...
# show volume units value on LHS (for dinkus) # show volume units value on LHS (for dinkus)
# chart.hideAxis('right') # vlm_chart.hideAxis('right')
# chart.showAxis('left') # vlm_chart.showAxis('left')
# send back new chart to caller # send back new chart to caller
task_status.started(chart) task_status.started(vlm_chart)
# should **not** be the same sub-chart widget # should **not** be the same sub-chart widget
assert chart.name != linked.chart.name assert vlm_chart.name != linked.chart.name
# sticky only on sub-charts atm # sticky only on sub-charts atm
last_val_sticky = chart.plotItem.getAxis( last_val_sticky = vlm_chart.plotItem.getAxis(
'right')._stickies.get(chart.name) 'right')._stickies.get(vlm_chart.name)
# read from last calculated value # read from last calculated value
value = shm.array['volume'][-1] value = shm.array['volume'][-1]
last_val_sticky.update_from_data(-1, value) last_val_sticky.update_from_data(-1, value)
vlm_curve = chart.update_graphics_from_flow( vlm_curve = vlm_chart.update_graphics_from_flow(
'volume', 'volume',
# shm.array,
) )
# size view to data once at outset # size view to data once at outset
chart.view._set_yrange() vlm_chart.view._set_yrange()
# add axis title # add axis title
axis = chart.getAxis('right') axis = vlm_chart.getAxis('right')
axis.set_title(' vlm') axis.set_title(' vlm')
if dvlm: if dvlm:
@ -782,7 +783,7 @@ async def open_vlm_displays(
# XXX: the main chart already contains a vlm "units" axis # XXX: the main chart already contains a vlm "units" axis
# so here we add an overlay wth a y-range in # so here we add an overlay wth a y-range in
# $ liquidity-value units (normally a fiat like USD). # $ liquidity-value units (normally a fiat like USD).
dvlm_pi = chart.overlay_plotitem( dvlm_pi = vlm_chart.overlay_plotitem(
'dolla_vlm', 'dolla_vlm',
index=0, # place axis on inside (nearest to chart) index=0, # place axis on inside (nearest to chart)
axis_title=' $vlm', axis_title=' $vlm',
@ -850,7 +851,7 @@ async def open_vlm_displays(
assert isinstance(shm, ShmArray) assert isinstance(shm, ShmArray)
assert isinstance(flume, Flume) assert isinstance(flume, Flume)
flow = chart.draw_curve( viz = vlm_chart.draw_curve(
name, name,
shm, shm,
flume, flume,
@ -861,13 +862,7 @@ async def open_vlm_displays(
style=style, style=style,
pi=pi, pi=pi,
) )
assert viz.plot is pi
# TODO: we need a better API to do this..
# specially store ref to shm for lookup in display loop
# since only a placeholder of `None` is entered in
# ``.draw_curve()``.
# viz = chart._vizs[name]
assert flow.plot is pi
chart_curves( chart_curves(
fields, fields,
@ -902,17 +897,17 @@ async def open_vlm_displays(
# displayed and the curves are effectively the same minus # displayed and the curves are effectively the same minus
# liquidity events (well at least on low OHLC periods - 1s). # liquidity events (well at least on low OHLC periods - 1s).
vlm_curve.hide() vlm_curve.hide()
chart.removeItem(vlm_curve) vlm_chart.removeItem(vlm_curve)
vflow = chart._vizs['volume'] vlm_viz = vlm_chart._vizs['volume']
vflow.render = False vlm_viz.render = False
# avoid range sorting on volume once disabled # avoid range sorting on volume once disabled
# chart.view.disable_auto_yrange() vlm_chart.view.disable_auto_yrange()
# Trade rate overlay # Trade rate overlay
# XXX: requires an additional overlay for # XXX: requires an additional overlay for
# a trades-per-period (time) y-range. # a trades-per-period (time) y-range.
tr_pi = chart.overlay_plotitem( tr_pi = vlm_chart.overlay_plotitem(
'trade_rates', 'trade_rates',
# TODO: dynamically update period (and thus this axis?) # TODO: dynamically update period (and thus this axis?)