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Support view increment with a steps size

async_hist_loading
Tyler Goodlet 2022-02-22 15:08:41 -05:00
parent bf3b58e861
commit 412c9ee6cf
1 changed files with 15 additions and 7 deletions
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22
piker/ui/_chart.py
View File

@ -818,11 +818,18 @@ class ChartPlotWidget(pg.PlotWidget):
def default_view( def default_view(
self, self,
index: int = -1, index: int = -1,
) -> None:
"""Set the view box to the "default" startup view of the scene.
""" ) -> None:
xlast = self._arrays[self.name][index]['index'] '''
Set the view box to the "default" startup view of the scene.
'''
try:
xlast = self._arrays[self.name][index]['index']
except IndexError:
log.warning(f'array for {self.name} not loaded yet?')
return
begin = xlast - _bars_to_left_in_follow_mode begin = xlast - _bars_to_left_in_follow_mode
end = xlast + _bars_from_right_in_follow_mode end = xlast + _bars_from_right_in_follow_mode
@ -840,6 +847,8 @@ class ChartPlotWidget(pg.PlotWidget):
def increment_view( def increment_view(
self, self,
steps: int = 1,
) -> None: ) -> None:
""" """
Increment the data view one step to the right thus "following" Increment the data view one step to the right thus "following"
@ -848,8 +857,8 @@ class ChartPlotWidget(pg.PlotWidget):
""" """
l, r = self.view_range() l, r = self.view_range()
self.view.setXRange( self.view.setXRange(
min=l + 1, min=l + steps,
max=r + 1, max=r + steps,
# TODO: holy shit, wtf dude... why tf would this not be 0 by # TODO: holy shit, wtf dude... why tf would this not be 0 by
# default... speechless. # default... speechless.
@ -858,7 +867,6 @@ class ChartPlotWidget(pg.PlotWidget):
def draw_ohlc( def draw_ohlc(
self, self,
name: str, name: str,
data: np.ndarray, data: np.ndarray,