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Aggretate cache resetting into a single ctx mngr method

incremental_update_paths
Tyler Goodlet 2022-05-28 15:41:11 -04:00
parent 08c83afa90
commit 88ac2fda52
1 changed files with 6 additions and 17 deletions
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21
piker/ui/_curve.py
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@ -18,6 +18,7 @@
Fast, smooth, sexy curves. Fast, smooth, sexy curves.
""" """
from contextlib import contextmanager as cm
from typing import Optional from typing import Optional
import numpy as np import numpy as np
@ -38,7 +39,6 @@ from ._style import hcolor
# # ohlc_to_m4_line, # # ohlc_to_m4_line,
# ds_m4, # ds_m4,
# ) # )
from ._pathops import xy_downsample
from ..log import get_logger from ..log import get_logger
@ -216,22 +216,11 @@ class FastAppendCurve(pg.GraphicsObject):
# self.fast_path.clear() # self.fast_path.clear()
self.fast_path = None self.fast_path = None
# self.disable_cache() @cm
# self.setCacheMode(QGraphicsItem.DeviceCoordinateCache)
def reset_cache(self) -> None: def reset_cache(self) -> None:
self.disable_cache()
self.setCacheMode(QGraphicsItem.DeviceCoordinateCache)
def disable_cache(self) -> None:
'''
Disable the use of the pixel coordinate cache and trigger a geo event.
'''
# XXX: pretty annoying but, without this there's little
# artefacts on the append updates to the curve...
self.setCacheMode(QtWidgets.QGraphicsItem.NoCache) self.setCacheMode(QtWidgets.QGraphicsItem.NoCache)
# self.prepareGeometryChange() yield
self.setCacheMode(QGraphicsItem.DeviceCoordinateCache)
def boundingRect(self): def boundingRect(self):
''' '''
@ -285,7 +274,7 @@ class FastAppendCurve(pg.GraphicsObject):
# actually terminates earlier so we don't need # actually terminates earlier so we don't need
# this for the last step. # this for the last step.
w += self._last_w w += self._last_w
ll = self._last_line # ll = self._last_line
h += 1 # ll.y2() - ll.y1() h += 1 # ll.y2() - ll.y1()
# br = QPointF( # br = QPointF(