Add initial history (view) to charting sys
Adds an additional `GodWidget.hist_linked: LinkedSplits` alongside the renamed `.rt_linked` to enable 2 sets of linked charts with different sampled data sets/flows. The history set is added without "all the fixins" for now (i.e. no order mode sidepane or search integration) such that it is merely a top level chart which shows a much longer term history and can be added to the UI via embedding the entire history linked-splits instance into the real-time linked set's splitter. Further impl deats: - adjust the `GodWidget._chart_cache: dict[str, tuple]]` to store both linked split chart sets per symbol so that symbol switching will continue to work with the added history chart (set). - rework `.load_symbol()` to operate on both the real-time (HFT) chart set and the history set. - rework `LinkedSplits.set_split_sizes()` to compensate for the history chart and do more detailed height calcs arithmetic to make it appear by default as a minor sub-chart. - adjust `LinkedSplits.add_plot()` and `ChartPlotWidget` internals to allow adding a plot without a sidepane and/or container `ChartnPane` composite widget by checking for a `sidepane == False` input. - make `.default_view()` accept a manual y-axis offset kwarg. - adjust search mode to provide history linked splits to `.set_chart_symbol()` call.history_view
Tyler Goodlet
parent
f0d417ce42
commit
9846396df2
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@ -115,7 +115,9 @@ class GodWidget(QWidget):
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# self.vbox.addLayout(self.hbox)
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self._chart_cache: dict[str, LinkedSplits] = {}
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self.linkedsplits: Optional[LinkedSplits] = None
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self.hist_linked: Optional[LinkedSplits] = None
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self.rt_linked: Optional[LinkedSplits] = None
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# assigned in the startup func `_async_main()`
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self._root_n: trio.Nursery = None
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@ -123,6 +125,10 @@ class GodWidget(QWidget):
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self._widgets: dict[str, QWidget] = {}
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self._resizing: bool = False
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@property
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def linkedsplits(self) -> LinkedSplits:
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return self.rt_linked
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# def init_timeframes_ui(self):
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# self.tf_layout = QHBoxLayout()
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# self.tf_layout.setSpacing(0)
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@ -148,19 +154,19 @@ class GodWidget(QWidget):
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def set_chart_symbol(
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self,
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symbol_key: str, # of form <fqsn>.<providername>
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linkedsplits: LinkedSplits, # type: ignore
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all_linked: tuple[LinkedSplits, LinkedSplits], # type: ignore
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) -> None:
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# re-sort org cache symbol list in LIFO order
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cache = self._chart_cache
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cache.pop(symbol_key, None)
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cache[symbol_key] = linkedsplits
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cache[symbol_key] = all_linked
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def get_chart_symbol(
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self,
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symbol_key: str,
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) -> LinkedSplits: # type: ignore
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) -> tuple[LinkedSplits, LinkedSplits]: # type: ignore
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return self._chart_cache.get(symbol_key)
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async def load_symbol(
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@ -182,28 +188,30 @@ class GodWidget(QWidget):
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# fully qualified symbol name (SNS i guess is what we're making?)
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fqsn = '.'.join([symbol_key, providername])
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linkedsplits = self.get_chart_symbol(fqsn)
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all_linked = self.get_chart_symbol(fqsn)
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order_mode_started = trio.Event()
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if not self.vbox.isEmpty():
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for linked in [self.rt_linked, self.hist_linked]:
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# XXX: this is CRITICAL especially with pixel buffer caching
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self.linkedsplits.hide()
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self.linkedsplits.unfocus()
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linked.hide()
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linked.unfocus()
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# self.hist_linked.hide()
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# self.hist_linked.unfocus()
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# XXX: pretty sure we don't need this
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# remove any existing plots?
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# XXX: ahh we might want to support cache unloading..
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# self.vbox.removeWidget(self.linkedsplits)
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# self.vbox.removeWidget(linked)
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# switching to a new viewable chart
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if linkedsplits is None or reset:
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if all_linked is None or reset:
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from ._display import display_symbol_data
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# we must load a fresh linked charts set
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linkedsplits = LinkedSplits(self)
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self.rt_linked = rt_charts = LinkedSplits(self)
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self.hist_linked = hist_charts = LinkedSplits(self)
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# spawn new task to start up and update new sub-chart instances
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self._root_n.start_soon(
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@ -215,31 +223,40 @@ class GodWidget(QWidget):
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order_mode_started,
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)
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self.set_chart_symbol(fqsn, linkedsplits)
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self.vbox.addWidget(linkedsplits)
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# self.vbox.addWidget(hist_charts)
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self.vbox.addWidget(rt_charts)
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self.set_chart_symbol(
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fqsn,
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(hist_charts, rt_charts),
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)
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for linked in [hist_charts, rt_charts]:
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linked.show()
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linked.focus()
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linkedsplits.show()
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linkedsplits.focus()
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await trio.sleep(0)
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else:
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# symbol is already loaded and ems ready
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order_mode_started.set()
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self.hist_linked, self.rt_linked = all_linked
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for linked in all_linked:
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# TODO:
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# - we'll probably want per-instrument/provider state here?
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# change the order config form over to the new chart
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# chart is already in memory so just focus it
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linkedsplits.show()
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linkedsplits.focus()
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linkedsplits.graphics_cycle()
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linked.show()
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linked.focus()
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linked.graphics_cycle()
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await trio.sleep(0)
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# XXX: since the pp config is a singleton widget we have to
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# also switch it over to the new chart's interal-layout
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# self.linkedsplits.chart.qframe.hbox.removeWidget(self.pp_pane)
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chart = linkedsplits.chart
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# linked.chart.qframe.hbox.removeWidget(self.pp_pane)
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chart = linked.chart
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# resume feeds *after* rendering chart view asap
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if chart:
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@ -251,8 +268,8 @@ class GodWidget(QWidget):
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# do nothing yah?
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chart.default_view()
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self.linkedsplits = linkedsplits
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symbol = linkedsplits.symbol
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# set window titlebar info
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symbol = self.rt_linked.symbol
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if symbol is not None:
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self.window.setWindowTitle(
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f'{symbol.front_fqsn()} '
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@ -399,10 +416,18 @@ class LinkedSplits(QWidget):
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# elif ln >= 2:
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# prop = 3/8
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major = 1 - prop
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min_h_ind = int((self.height() * prop) / ln)
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h = self.height()
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histview_h = h * 1.6/6
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h = h - histview_h
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sizes = [int(self.height() * major)]
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major = 1 - prop
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min_h_ind = int((h * prop) / ln)
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sizes = [
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int(histview_h),
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int(h * major),
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]
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# give all subcharts the same remaining proportional height
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sizes.extend([min_h_ind] * ln)
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self.splitter.setSizes(sizes)
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@ -498,10 +523,15 @@ class LinkedSplits(QWidget):
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'bottom': xaxis,
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}
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qframe = ChartnPane(
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if sidepane is not False:
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parent = qframe = ChartnPane(
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sidepane=sidepane,
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parent=self.splitter,
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)
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else:
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parent = self.splitter
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qframe = None
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cpw = ChartPlotWidget(
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# this name will be used to register the primary
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@ -509,7 +539,7 @@ class LinkedSplits(QWidget):
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name=name,
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data_key=array_key or name,
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parent=qframe,
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parent=parent,
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linkedsplits=self,
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axisItems=axes,
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**cpw_kwargs,
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@ -537,6 +567,7 @@ class LinkedSplits(QWidget):
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self.xaxis_chart = cpw
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cpw.showAxis('bottom')
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if qframe is not None:
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qframe.chart = cpw
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qframe.hbox.addWidget(cpw)
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@ -550,6 +581,7 @@ class LinkedSplits(QWidget):
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sidepane,
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alignment=Qt.AlignTop
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)
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cpw.sidepane = sidepane
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cpw.plotItem.vb.linkedsplits = self
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@ -613,7 +645,9 @@ class LinkedSplits(QWidget):
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if not _is_main:
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# track by name
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self.subplots[name] = cpw
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if qframe is not None:
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self.splitter.addWidget(qframe)
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# scale split regions
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self.set_split_sizes()
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@ -648,7 +682,7 @@ class LinkedSplits(QWidget):
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'''
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main_chart = self.chart
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if main_chart:
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if main_chart and main_chart.sidepane:
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sp_w = main_chart.sidepane.width()
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for name, cpw in self.subplots.items():
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cpw.sidepane.setMinimumWidth(sp_w)
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@ -711,6 +745,7 @@ class ChartPlotWidget(pg.PlotWidget):
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# NOTE: must be set bfore calling ``.mk_vb()``
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self.linked = linkedsplits
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self.sidepane: Optional[FieldsForm] = None
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# source of our custom interactions
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self.cv = cv = self.mk_vb(name)
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@ -867,7 +902,8 @@ class ChartPlotWidget(pg.PlotWidget):
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def default_view(
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self,
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bars_from_y: int = 616,
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bars_from_y: int = int(616 * 3/8),
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y_offset: int = 0,
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do_ds: bool = True,
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) -> None:
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@ -906,8 +942,12 @@ class ChartPlotWidget(pg.PlotWidget):
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# terms now that we've scaled either by user control
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# or to the default set of bars as per the immediate block
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# above.
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if not y_offset:
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marker_pos, l1_len = self.pre_l1_xs()
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end = xlast + l1_len + 1
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else:
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end = xlast + y_offset + 1
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begin = end - (r - l)
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# for debugging
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@ -635,7 +635,12 @@ class SearchWidget(QtWidgets.QWidget):
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# Re-order the symbol cache on the chart to display in
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# LIFO order. this is normally only done internally by
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# the chart on new symbols being loaded into memory
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chart.set_chart_symbol(fqsn, chart.linkedsplits)
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chart.set_chart_symbol(
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fqsn, (
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chart.linkedsplits,
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self.godwidget.hist_linked,
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)
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)
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self.view.set_section_entries(
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'cache',
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