Drop remaining usage of `ChartPlotWidget.default_view()`

Instead delegate directly to `Viz.default_view()` throughout charting
startup and interaction handlers.

Also add a `ChartPlotWidget.reset_graphics_caches()` context mngr which
resets all managed graphics object's cacheing modes on enter and
restores them on exit for simplified use in interaction handling code.
storage_cli
Tyler Goodlet 2023-03-05 21:14:22 -05:00
parent d32382f831
commit 80af431c2a
2 changed files with 48 additions and 35 deletions

View File

@ -19,6 +19,10 @@ High level chart-widget apis.
'''
from __future__ import annotations
from contextlib import (
contextmanager as cm,
ExitStack,
)
from typing import (
Iterator,
TYPE_CHECKING,
@ -257,7 +261,9 @@ class GodWidget(QWidget):
# last had the xlast in view, if so then shift so it's
# still in view, if the user was viewing history then
# do nothing yah?
self.rt_linked.chart.default_view()
self.rt_linked.chart.main_viz.default_view(
do_min_bars=True,
)
# if a history chart instance is already up then
# set the search widget as its sidepane.
@ -811,11 +817,17 @@ class LinkedSplits(QWidget):
self.chart.sidepane.setMinimumWidth(sp_w)
# TODO: we should really drop using this type and instead just
# write our own wrapper around `PlotItem`..
# TODO: a general rework of this widget-interface:
# - we should really drop using this type and instead just lever our
# own override of `PlotItem`..
# - possibly rename to class -> MultiChart(pg.PlotWidget):
# where the widget is responsible for containing management
# harness for multi-Viz "view lists" and their associated mode-panes
# (fsp chain, order ctl, feed queue-ing params, actor ctl, etc).
class ChartPlotWidget(pg.PlotWidget):
'''
``GraphicsView`` subtype containing a ``.plotItem: PlotItem`` as well
``PlotWidget`` subtype containing a ``.plotItem: PlotItem`` as well
as a `.pi_overlay: PlotItemOverlay`` which helps manage and overlay flow
graphics view multiple compose view boxes.
@ -1005,32 +1017,6 @@ class ChartPlotWidget(pg.PlotWidget):
# )
return line_end, marker_right, r_axis_x
def default_view(
self,
bars_from_y: int = int(616 * 3/8),
y_offset: int = 0,
do_ds: bool = True,
) -> None:
'''
Set the view box to the "default" startup view of the scene.
'''
viz = self.get_viz(self.name)
if not viz:
log.warning(f'`Viz` for {self.name} not loaded yet?')
return
viz.default_view(
bars_from_y,
y_offset,
do_ds,
)
if do_ds:
self.linked.graphics_cycle()
def increment_view(
self,
datums: int = 1,
@ -1321,3 +1307,30 @@ class ChartPlotWidget(pg.PlotWidget):
def iter_vizs(self) -> Iterator[Viz]:
return iter(self._vizs.values())
@cm
def reset_graphics_caches(self) -> None:
'''
Reset all managed ``Viz`` (flow) graphics objects
Qt cache modes (to ``NoCache`` mode) on enter and
restore on exit.
'''
with ExitStack() as stack:
for viz in self.iter_vizs():
stack.enter_context(
viz.graphics.reset_cache(),
)
# also reset any downsampled alt-graphics objects which
# might be active.
dsg = viz.ds_graphics
if dsg:
stack.enter_context(
dsg.reset_cache(),
)
try:
print("RESETTING ALL")
yield
finally:
stack.close()

View File

@ -419,7 +419,7 @@ async def graphics_update_loop(
ds.vlm_chart = vlm_chart
ds.vlm_sticky = vlm_sticky
fast_chart.default_view()
fast_chart.main_viz.default_view()
# ds.hist_vars.update({
# 'i_last_append': 0,
@ -1446,7 +1446,7 @@ async def display_symbol_data(
for fqsn, flume in feed.flumes.items():
# size view to data prior to order mode init
rt_chart.default_view()
rt_chart.main_viz.default_view()
rt_linked.graphics_cycle()
# TODO: look into this because not sure why it was
@ -1457,7 +1457,7 @@ async def display_symbol_data(
# determine if auto-range adjustements should be made.
# rt_linked.subplots.pop('volume', None)
hist_chart.default_view()
hist_chart.main_viz.default_view()
hist_linked.graphics_cycle()
godwidget.resize_all()
@ -1500,10 +1500,10 @@ async def display_symbol_data(
# default view adjuments and sidepane alignment
# as final default UX touch.
rt_chart.default_view()
rt_chart.main_viz.default_view()
await trio.sleep(0)
hist_chart.default_view()
hist_chart.main_viz.default_view()
hist_viz = hist_chart.get_viz(fqsn)
await trio.sleep(0)