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Skip chart updates if parent widget is hidden to save cpus

status_bar
Tyler Goodlet 2021-05-30 08:47:21 -04:00
parent 7da7dee02b
commit cc60ad46fc
1 changed files with 21 additions and 8 deletions
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29
piker/ui/_chart.py
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@ -79,10 +79,11 @@ log = get_logger(__name__)
class ChartSpace(QtGui.QWidget): class ChartSpace(QtGui.QWidget):
"""High level widget which contains layouts for organizing '''Highest level composed widget which contains layouts for
lower level charts as well as other widgets used to control organizing lower level charts as well as other widgets used to
or modify them. control or modify them.
"""
'''
def __init__(self, parent=None): def __init__(self, parent=None):
super().__init__(parent) super().__init__(parent)
@ -431,6 +432,8 @@ class ChartPlotWidget(pg.PlotWidget):
_l1_labels: L1Labels = None _l1_labels: L1Labels = None
mode_name: str = 'mode: view'
# TODO: can take a ``background`` color setting - maybe there's # TODO: can take a ``background`` color setting - maybe there's
# a better one? # a better one?
@ -508,8 +511,6 @@ class ChartPlotWidget(pg.PlotWidget):
def focus(self) -> None: def focus(self) -> None:
# self.setFocus() # self.setFocus()
self._vb.setFocus() self._vb.setFocus()
app = QtGui.QApplication.instance()
app.activeWindow().statusBar().showMessage("mode: view")
def last_bar_in_view(self) -> int: def last_bar_in_view(self) -> int:
self._ohlc[-1]['index'] self._ohlc[-1]['index']
@ -1080,7 +1081,14 @@ async def chart_from_quotes(
tick_margin = 2 * tick_size tick_margin = 2 * tick_size
last_ask = last_bid = last_clear = time.time() last_ask = last_bid = last_clear = time.time()
chart.show()
async for quotes in stream: async for quotes in stream:
# chart isn't actively shown so just skip render cycle
if chart._lc.isHidden():
continue
for sym, quote in quotes.items(): for sym, quote in quotes.items():
now = time.time() now = time.time()
@ -1389,10 +1397,15 @@ async def run_fsp(
# update chart graphics # update chart graphics
async for value in stream: async for value in stream:
# chart isn't actively shown so just skip render cycle
if chart._lc.isHidden():
continue
now = time.time() now = time.time()
period = now - last period = now - last
# if period <= 1/30: # if period <= 1/30:
if period <= 1/_clear_throttle_rate - 0.001: if period <= 1/_clear_throttle_rate:
# faster then display refresh rate # faster then display refresh rate
# print(f'quote too fast: {1/period}') # print(f'quote too fast: {1/period}')
continue continue
@ -1679,7 +1692,7 @@ async def _async_main(
# configure global DPI aware font size # configure global DPI aware font size
_font.configure_to_dpi(screen) _font.configure_to_dpi(screen)
sbar = chart_app.window.statusBar() sbar = chart_app.window.status_bar
sbar.setStyleSheet(f"font: {_font.px_size - 3}px") sbar.setStyleSheet(f"font: {_font.px_size - 3}px")
sbar.showMessage('starting ze chartz...') sbar.showMessage('starting ze chartz...')