Factor sync part of graphics update into func, add `trigger_update()``
parent
ed8cfcf66d
commit
b75a3310fe
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@ -23,7 +23,7 @@ graphics update methods via our custom ``pyqtgraph`` charting api.
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'''
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from functools import partial
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import time
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from typing import Optional
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from typing import Optional, Any
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import numpy as np
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import tractor
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@ -109,6 +109,12 @@ def chart_maxmin(
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return last_bars_range, mx, max(mn, 0), mx_vlm_in_view
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# actor-local graphics state that can be passed
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# to a ``graphic_update_cycle()`` call by any task
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# wishing to update the UI.
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_ux_state: dict[str, Any] = {}
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async def graphics_update_loop(
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linked: LinkedSplits,
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@ -147,7 +153,7 @@ async def graphics_update_loop(
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if vlm_chart:
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vlm_sticky = vlm_chart._ysticks['volume']
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vlm_view = vlm_chart.view
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# vlm_view = vlm_chart.view
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maxmin = partial(chart_maxmin, chart, vlm_chart)
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chart.default_view()
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@ -183,7 +189,7 @@ async def graphics_update_loop(
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tick_margin = 3 * tick_size
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chart.show()
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view = chart.view
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# view = chart.view
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last_quote = time.time()
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i_last = ohlcv.index
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@ -210,7 +216,27 @@ async def graphics_update_loop(
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# async for quotes in iter_drain_quotes():
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_ux_state.update({
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'quotes': {},
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'linked': linked,
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'maxmin': maxmin,
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'tick_margin': tick_margin,
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'ohlcv': ohlcv,
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'chart': chart,
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'last_price_sticky': last_price_sticky,
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'vlm_chart': vlm_chart,
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'i_last': i_last,
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'last_mx_vlm': last_mx_vlm,
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'vlm_sticky': vlm_sticky,
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'l1': l1,
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'last_mx': last_mx,
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'last_mn': last_mn,
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})
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async for quotes in stream:
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_ux_state['quotes'] = quotes
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quote_period = time.time() - last_quote
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quote_rate = round(
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1/quote_period, 1) if quote_period > 0 else float('inf')
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@ -231,6 +257,43 @@ async def graphics_update_loop(
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chart.pause_all_feeds()
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continue
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# sync call to update all graphics/UX components.
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graphics_update_cycle(**_ux_state)
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def trigger_update() -> None:
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'''
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Manually trigger a graphics update from global state.
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Generally used from remote actors who wish to trigger a UI refresh.
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'''
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assert _ux_state is not None, 'graphics engine not initialized?'
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graphics_update_cycle(**_ux_state)
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def graphics_update_cycle(
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quotes,
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linked,
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maxmin,
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tick_margin,
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ohlcv,
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chart,
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last_price_sticky,
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vlm_chart,
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i_last,
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last_mx_vlm,
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vlm_sticky,
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l1,
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last_mx,
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last_mn,
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wap_in_history: bool = False,
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# vlm_view,
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) -> None:
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for sym, quote in quotes.items():
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(
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@ -274,7 +337,7 @@ async def graphics_update_loop(
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mx_vlm_in_view > last_mx_vlm
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):
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# print(f'mx vlm: {last_mx_vlm} -> {mx_vlm_in_view}')
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vlm_view._set_yrange(
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vlm_chart.view._set_yrange(
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yrange=(0, mx_vlm_in_view * 1.375)
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)
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last_mx_vlm = mx_vlm_in_view
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@ -410,7 +473,7 @@ async def graphics_update_loop(
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and not chart._static_yrange == 'axis'
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):
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# print(f'new y range: {(mn, mx)}')
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view._set_yrange(
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chart.view._set_yrange(
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yrange=(mn, mx),
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# TODO: we should probably scale
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# the view margin based on the size
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@ -479,8 +542,10 @@ async def display_symbol_data(
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# clear_on_next=True,
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# group_key=loading_sym_key,
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# )
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async with open_feed(
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['.'.join((sym, provider))],
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provider,
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[sym],
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loglevel=loglevel,
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# limit to at least display's FPS
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@ -491,11 +556,10 @@ async def display_symbol_data(
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ohlcv: ShmArray = feed.shm
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bars = ohlcv.array
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symbol = feed.symbols[sym]
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fqsn = symbol.front_fqsn()
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# load in symbol's ohlc data
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godwidget.window.setWindowTitle(
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f'{fqsn} '
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f'{symbol.key}@{symbol.brokers} '
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f'tick:{symbol.tick_size} '
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f'step:1s '
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)
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@ -580,7 +644,8 @@ async def display_symbol_data(
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open_order_mode(
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feed,
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chart,
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fqsn,
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symbol,
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provider,
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order_mode_started
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)
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):
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