Factor sync part of graphics update into func, add `trigger_update()``

offline_history_loading
Tyler Goodlet 2022-03-06 17:02:49 -05:00
parent ed8cfcf66d
commit b75a3310fe
1 changed files with 267 additions and 202 deletions

View File

@ -23,7 +23,7 @@ graphics update methods via our custom ``pyqtgraph`` charting api.
'''
from functools import partial
import time
from typing import Optional
from typing import Optional, Any
import numpy as np
import tractor
@ -109,6 +109,12 @@ def chart_maxmin(
return last_bars_range, mx, max(mn, 0), mx_vlm_in_view
# actor-local graphics state that can be passed
# to a ``graphic_update_cycle()`` call by any task
# wishing to update the UI.
_ux_state: dict[str, Any] = {}
async def graphics_update_loop(
linked: LinkedSplits,
@ -147,7 +153,7 @@ async def graphics_update_loop(
if vlm_chart:
vlm_sticky = vlm_chart._ysticks['volume']
vlm_view = vlm_chart.view
# vlm_view = vlm_chart.view
maxmin = partial(chart_maxmin, chart, vlm_chart)
chart.default_view()
@ -183,7 +189,7 @@ async def graphics_update_loop(
tick_margin = 3 * tick_size
chart.show()
view = chart.view
# view = chart.view
last_quote = time.time()
i_last = ohlcv.index
@ -210,7 +216,27 @@ async def graphics_update_loop(
# async for quotes in iter_drain_quotes():
_ux_state.update({
'quotes': {},
'linked': linked,
'maxmin': maxmin,
'tick_margin': tick_margin,
'ohlcv': ohlcv,
'chart': chart,
'last_price_sticky': last_price_sticky,
'vlm_chart': vlm_chart,
'i_last': i_last,
'last_mx_vlm': last_mx_vlm,
'vlm_sticky': vlm_sticky,
'l1': l1,
'last_mx': last_mx,
'last_mn': last_mn,
})
async for quotes in stream:
_ux_state['quotes'] = quotes
quote_period = time.time() - last_quote
quote_rate = round(
1/quote_period, 1) if quote_period > 0 else float('inf')
@ -231,6 +257,43 @@ async def graphics_update_loop(
chart.pause_all_feeds()
continue
# sync call to update all graphics/UX components.
graphics_update_cycle(**_ux_state)
def trigger_update() -> None:
'''
Manually trigger a graphics update from global state.
Generally used from remote actors who wish to trigger a UI refresh.
'''
assert _ux_state is not None, 'graphics engine not initialized?'
graphics_update_cycle(**_ux_state)
def graphics_update_cycle(
quotes,
linked,
maxmin,
tick_margin,
ohlcv,
chart,
last_price_sticky,
vlm_chart,
i_last,
last_mx_vlm,
vlm_sticky,
l1,
last_mx,
last_mn,
wap_in_history: bool = False,
# vlm_view,
) -> None:
for sym, quote in quotes.items():
(
@ -274,7 +337,7 @@ async def graphics_update_loop(
mx_vlm_in_view > last_mx_vlm
):
# print(f'mx vlm: {last_mx_vlm} -> {mx_vlm_in_view}')
vlm_view._set_yrange(
vlm_chart.view._set_yrange(
yrange=(0, mx_vlm_in_view * 1.375)
)
last_mx_vlm = mx_vlm_in_view
@ -410,7 +473,7 @@ async def graphics_update_loop(
and not chart._static_yrange == 'axis'
):
# print(f'new y range: {(mn, mx)}')
view._set_yrange(
chart.view._set_yrange(
yrange=(mn, mx),
# TODO: we should probably scale
# the view margin based on the size
@ -479,8 +542,10 @@ async def display_symbol_data(
# clear_on_next=True,
# group_key=loading_sym_key,
# )
async with open_feed(
['.'.join((sym, provider))],
provider,
[sym],
loglevel=loglevel,
# limit to at least display's FPS
@ -491,11 +556,10 @@ async def display_symbol_data(
ohlcv: ShmArray = feed.shm
bars = ohlcv.array
symbol = feed.symbols[sym]
fqsn = symbol.front_fqsn()
# load in symbol's ohlc data
godwidget.window.setWindowTitle(
f'{fqsn} '
f'{symbol.key}@{symbol.brokers} '
f'tick:{symbol.tick_size} '
f'step:1s '
)
@ -580,7 +644,8 @@ async def display_symbol_data(
open_order_mode(
feed,
chart,
fqsn,
symbol,
provider,
order_mode_started
)
):