pikers
/
piker
3
0
Fork 0
Code Issues 2 Pull Requests 5 Packages Projects Releases Wiki Activity

Port ui components to use flows, drop all late assignments of shm

incremental_update_paths
Tyler Goodlet 2022-04-14 10:04:18 -04:00
parent c097016fd2
commit 599c77ff84
5 changed files with 37 additions and 54 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
piker/ui/_axes.py
View File

@ -223,8 +223,9 @@ class DynamicDateAxis(Axis):
) -> list[str]:
chart = self.linkedsplits.chart
bars = chart._arrays[chart.name]
shm = self.linkedsplits.chart._shm
flow = chart._flows[chart.name]
shm = flow.shm
bars = shm.array
first = shm._first.value
bars_len = len(bars)

13
piker/ui/_cursor.py
View File

@ -254,13 +254,13 @@ class ContentsLabels:
def update_labels(
self,
index: int,
# array_name: str,
) -> None:
# for name, (label, update) in self._labels.items():
for chart, name, label, update in self._labels:
array = chart._arrays[name]
flow = chart._flows[name]
array = flow.shm.array
if not (
index >= 0
and index < array[-1]['index']
@ -269,8 +269,6 @@ class ContentsLabels:
print('WTF out of range?')
continue
# array = chart._arrays[name]
# call provided update func with data point
try:
label.show()
@ -472,9 +470,12 @@ class Cursor(pg.GraphicsObject):
) -> LineDot:
# if this plot contains curves add line dot "cursors" to denote
# the current sample under the mouse
main_flow = plot._flows[plot.name]
# read out last index
i = main_flow.shm.array[-1]['index']
cursor = LineDot(
curve,
index=plot._arrays[plot.name][-1]['index'],
index=i,
plot=plot
)
plot.addItem(cursor)

29
piker/ui/_display.py
View File

@ -408,9 +408,8 @@ def graphics_update_cycle(
):
# TODO: make it so this doesn't have to be called
# once the $vlm is up?
vlm_chart.update_graphics_from_array(
vlm_chart.update_graphics_from_flow(
'volume',
array,
# UGGGh, see ``maxmin()`` impl in `._fsp` for
# the overlayed plotitems... we need a better
@ -436,6 +435,11 @@ def graphics_update_cycle(
vars['last_mx_vlm'] = mx_vlm_in_view
for curve_name, flow in vlm_chart._flows.items():
if not flow.render:
print(f'skipping flow {curve_name}?')
continue
update_fsp_chart(
vlm_chart,
flow,
@ -500,9 +504,8 @@ def graphics_update_cycle(
or i_diff > 0
or trigger_all
):
chart.update_graphics_from_array(
chart.update_graphics_from_flow(
chart.name,
array,
)
# iterate in FIFO order per tick-frame
@ -515,6 +518,7 @@ def graphics_update_cycle(
# tick frames to determine the y-range for chart
# auto-scaling.
# TODO: we need a streaming minmax algo here, see def above.
if liv:
mx = max(price + tick_margin, mx)
mn = min(price - tick_margin, mn)
@ -539,9 +543,8 @@ def graphics_update_cycle(
if wap_in_history:
# update vwap overlay line
chart.update_graphics_from_array(
chart.update_graphics_from_flow(
'bar_wap',
array,
)
# L1 book label-line updates
@ -557,7 +560,7 @@ def graphics_update_cycle(
if (
label is not None
# and liv
and liv
):
label.update_fields(
{'level': price, 'size': size}
@ -571,7 +574,7 @@ def graphics_update_cycle(
typ in _tick_groups['asks']
# TODO: instead we could check if the price is in the
# y-view-range?
# and liv
and liv
):
l1.ask_label.update_fields({'level': price, 'size': size})
@ -579,7 +582,7 @@ def graphics_update_cycle(
typ in _tick_groups['bids']
# TODO: instead we could check if the price is in the
# y-view-range?
# and liv
and liv
):
l1.bid_label.update_fields({'level': price, 'size': size})
@ -692,9 +695,10 @@ async def display_symbol_data(
# create main OHLC chart
chart = linked.plot_ohlc_main(
symbol,
bars,
ohlcv,
sidepane=pp_pane,
)
chart.default_view()
chart._feeds[symbol.key] = feed
chart.setFocus()
@ -714,10 +718,6 @@ async def display_symbol_data(
# size view to data once at outset
chart.cv._set_yrange()
# TODO: a data view api that makes this less shit
chart._shm = ohlcv
chart._flows[chart.data_key].shm = ohlcv
# NOTE: we must immediately tell Qt to show the OHLC chart
# to avoid a race where the subplots get added/shown to
# the linked set *before* the main price chart!
@ -780,6 +780,5 @@ async def display_symbol_data(
sbar._status_groups[loading_sym_key][1]()
# let the app run.. bby
chart.default_view()
# linked.graphics_cycle()
await trio.sleep_forever()

2
piker/ui/_editors.py
View File

@ -343,7 +343,7 @@ class SelectRect(QtGui.QGraphicsRectItem):
nbars = ixmx - ixmn + 1
chart = self._chart
data = chart._arrays[chart.name][ixmn:ixmx]
data = chart._flows[chart.name].shm.array[ixmn:ixmx]
if len(data):
std = data['close'].std()

38
piker/ui/_fsp.py
View File

@ -93,9 +93,8 @@ def update_fsp_chart(
# update graphics
# NOTE: this does a length check internally which allows it
# staying above the last row check below..
chart.update_graphics_from_array(
chart.update_graphics_from_flow(
graphics_name,
array,
array_key=array_key or graphics_name,
)
@ -106,9 +105,6 @@ def update_fsp_chart(
# read from last calculated value and update any label
last_val_sticky = chart._ysticks.get(graphics_name)
if last_val_sticky:
# array = shm.array[array_key]
# if len(array):
# value = array[-1]
last = last_row[array_key]
last_val_sticky.update_from_data(-1, last)
@ -246,20 +242,18 @@ async def run_fsp_ui(
chart.draw_curve(
name=name,
data=shm.array,
shm=shm,
overlay=True,
color='default_light',
array_key=name,
**conf.get('chart_kwargs', {})
)
# specially store ref to shm for lookup in display loop
chart._flows[name].shm = shm
else:
# create a new sub-chart widget for this fsp
chart = linkedsplits.add_plot(
name=name,
array=shm.array,
shm=shm,
array_key=name,
sidepane=sidepane,
@ -271,12 +265,6 @@ async def run_fsp_ui(
**conf.get('chart_kwargs', {})
)
# XXX: ONLY for sub-chart fsps, overlays have their
# data looked up from the chart's internal array set.
# TODO: we must get a data view api going STAT!!
chart._shm = shm
chart._flows[chart.data_key].shm = shm
# should **not** be the same sub-chart widget
assert chart.name != linkedsplits.chart.name
@ -626,7 +614,7 @@ async def open_vlm_displays(
shm = ohlcv
chart = linked.add_plot(
name='volume',
array=shm.array,
shm=shm,
array_key='volume',
sidepane=sidepane,
@ -639,7 +627,6 @@ async def open_vlm_displays(
# the curve item internals are pretty convoluted.
style='step',
)
chart._flows['volume'].shm = ohlcv
# force 0 to always be in view
def maxmin(
@ -666,11 +653,6 @@ async def open_vlm_displays(
# chart.hideAxis('right')
# chart.showAxis('left')
# XXX: ONLY for sub-chart fsps, overlays have their
# data looked up from the chart's internal array set.
# TODO: we must get a data view api going STAT!!
chart._shm = shm
# send back new chart to caller
task_status.started(chart)
@ -685,9 +667,9 @@ async def open_vlm_displays(
last_val_sticky.update_from_data(-1, value)
vlm_curve = chart.update_graphics_from_array(
vlm_curve = chart.update_graphics_from_flow(
'volume',
shm.array,
# shm.array,
)
# size view to data once at outset
@ -795,9 +777,8 @@ async def open_vlm_displays(
color = 'bracket'
curve, _ = chart.draw_curve(
# name='dolla_vlm',
name=name,
data=shm.array,
shm=shm,
array_key=name,
overlay=pi,
color=color,
@ -812,7 +793,6 @@ async def open_vlm_displays(
# ``.draw_curve()``.
flow = chart._flows[name]
assert flow.plot is pi
flow.shm = shm
chart_curves(
fields,
@ -847,7 +827,9 @@ async def open_vlm_displays(
# liquidity events (well at least on low OHLC periods - 1s).
vlm_curve.hide()
chart.removeItem(vlm_curve)
chart._flows.pop('volume')
vflow = chart._flows['volume']
vflow.render = False
# avoid range sorting on volume once disabled
chart.view.disable_auto_yrange()