WIP only-in-view paths
Tyler Goodlet
parent
3a3baca9bc
commit
25891c6e51
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@ -838,8 +838,12 @@ class ChartPlotWidget(pg.PlotWidget):
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'''
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l, r = self.view_range()
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array = self._arrays[self.name]
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lbar = max(l, array[0]['index'])
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rbar = min(r, array[-1]['index'])
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start, stop = self._xrange = (
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array[0]['index'],
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array[-1]['index'],
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)
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lbar = max(l, start)
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rbar = min(r, stop)
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return l, lbar, rbar, r
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def curve_width_pxs(
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@ -907,7 +911,7 @@ class ChartPlotWidget(pg.PlotWidget):
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return
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xfirst, xlast = index[0], index[-1]
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brange = l, lbar, rbar, r = self.bars_range()
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l, lbar, rbar, r = self.bars_range()
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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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@ -986,7 +990,8 @@ class ChartPlotWidget(pg.PlotWidget):
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graphics = BarItems(
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self.linked,
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self.plotItem,
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pen_color=self.pen_color
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pen_color=self.pen_color,
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name=name,
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)
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# adds all bar/candle graphics objects for each data point in
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@ -1175,29 +1180,34 @@ class ChartPlotWidget(pg.PlotWidget):
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)
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return last
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def update_ohlc_from_array(
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# def update_ohlc_from_array(
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# self,
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# graphics_name: str,
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# array: np.ndarray,
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# **kwargs,
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# ) -> pg.GraphicsObject:
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# '''
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# Update the named internal graphics from ``array``.
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# '''
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# self._index = array['index'][0]
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# self._arrays[self.name] = array
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# graphics = self._graphics[graphics_name]
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# graphics.update_from_array(array, **kwargs)
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# return graphics
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# def update_curve_from_array(
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def update_graphics_from_array(
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self,
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graphics_name: str,
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array: np.ndarray,
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**kwargs,
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) -> pg.GraphicsObject:
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'''
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Update the named internal graphics from ``array``.
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'''
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self._arrays[self.name] = array
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graphics = self._graphics[graphics_name]
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graphics.update_from_array(array, **kwargs)
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return graphics
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def update_curve_from_array(
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self,
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graphics_name: str,
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array: np.ndarray,
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array: Optional[np.ndarray] = None,
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array_key: Optional[str] = None,
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**kwargs,
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) -> pg.GraphicsObject:
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@ -1205,31 +1215,64 @@ class ChartPlotWidget(pg.PlotWidget):
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Update the named internal graphics from ``array``.
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'''
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assert len(array)
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if array is not None:
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assert len(array)
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data_key = array_key or graphics_name
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if graphics_name not in self._flows:
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self._arrays[self.name] = array
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else:
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data_key = self.name
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if array is not None:
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# write array to internal graphics table
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self._arrays[data_key] = array
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else:
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array = self._arrays[data_key]
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curve = self._graphics[graphics_name]
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# array key and graphics "name" might be different..
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graphics = self._graphics[graphics_name]
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# NOTE: back when we weren't implementing the curve graphics
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# ourselves you'd have updates using this method:
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# curve.setData(y=array[graphics_name], x=array['index'], **kwargs)
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# compute "in-view" indices
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l, lbar, rbar, r = self.bars_range()
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indexes = array['index']
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ifirst = indexes[0]
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ilast = indexes[-1]
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# NOTE: graphics **must** implement a diff based update
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# operation where an internal ``FastUpdateCurve._xrange`` is
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# used to determine if the underlying path needs to be
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# pre/ap-pended.
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curve.update_from_array(
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x=array['index'],
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y=array[data_key],
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**kwargs
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)
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lbar_i = max(l, ifirst) - ifirst
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rbar_i = min(r, ilast) - ifirst
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return curve
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in_view = array[lbar_i: rbar_i]
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if not in_view.size:
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return graphics
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# TODO: we could do it this way as well no?
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# to_draw = array[lbar - ifirst:(rbar - ifirst) + 1]
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# start_index = self._index
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# lbar = max(l, start_index) - start_index
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# rbar = min(r, ohlc[-1]['index']) - start_index
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if isinstance(graphics, BarItems):
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graphics.update_from_array(
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array,
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in_view,
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view_range=(lbar_i, rbar_i),
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**kwargs,
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)
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else:
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graphics.update_from_array(
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x=array['index'],
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y=array[data_key],
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x_iv=in_view['index'],
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y_iv=in_view[data_key],
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view_range=(lbar_i, rbar_i),
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**kwargs
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)
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return graphics
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# def _label_h(self, yhigh: float, ylow: float) -> float:
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# # compute contents label "height" in view terms
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@ -1260,6 +1303,9 @@ class ChartPlotWidget(pg.PlotWidget):
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# print(f"bounds (ylow, yhigh): {(ylow, yhigh)}")
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# TODO: pretty sure we can just call the cursor
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# directly not? i don't wee why we need special "signal proxies"
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# for this lul..
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def enterEvent(self, ev): # noqa
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# pg.PlotWidget.enterEvent(self, ev)
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self.sig_mouse_enter.emit(self)
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@ -144,6 +144,8 @@ class FastAppendCurve(pg.GraphicsObject):
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self.use_fpath = use_fpath
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self.fast_path: Optional[QtGui.QPainterPath] = None
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self._ds_cache: dict = {}
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# TODO: we can probably just dispense with the parent since
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# we're basically only using the pen setting now...
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super().__init__(*args, **kwargs)
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@ -214,6 +216,9 @@ class FastAppendCurve(pg.GraphicsObject):
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vr = self.viewRect()
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l, r = int(vr.left()), int(vr.right())
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if not self._xrange:
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return 0
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start, stop = self._xrange
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lbar = max(l, start)
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rbar = min(r, stop)
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@ -222,44 +227,50 @@ class FastAppendCurve(pg.GraphicsObject):
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QLineF(lbar, 0, rbar, 0)
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).length()
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def should_ds_or_redraw(
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self,
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# def should_ds_or_redraw(
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# self,
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) -> tuple[bool, bool]:
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# ) -> tuple[bool, bool]:
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uppx = self.x_uppx()
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px_width = self.px_width()
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# uppx_diff = abs(uppx - self._last_uppx)
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uppx_diff = (uppx - self._last_uppx)
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self._last_uppx = uppx
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# uppx = self.x_uppx()
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# px_width = self.px_width()
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# if not px_width:
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# return False, False
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should_redraw: bool = False
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should_ds: bool = False
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# # uppx_diff = abs(uppx - self._last_uppx)
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# uppx_diff = (uppx - self._last_uppx)
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# self._last_uppx = uppx
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# print(uppx_diff)
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# should_redraw: bool = False
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# should_ds: bool = self._in_ds
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if (
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uppx <= 8
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):
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# trigger redraw or original non-downsampled data
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if self._in_ds:
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print('REVERTING BACK TO SRC DATA')
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# clear downsampled curve(s) and expect
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# refresh of path segments.
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should_redraw = True
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# # print(uppx_diff)
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elif (
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uppx_diff >= 4
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or uppx_diff <= -2
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or self._step_mode and abs(uppx_diff) >= 1
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):
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log.info(
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f'{self._name} downsampler change: {self._last_uppx} -> {uppx}'
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)
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should_ds = {'px_width': px_width, 'uppx': uppx}
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should_redraw = True
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# if (
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# uppx <= 8
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# ):
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# # trigger redraw or original non-downsampled data
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# if self._in_ds:
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# print('REVERTING BACK TO SRC DATA')
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# # clear downsampled curve(s) and expect
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# # refresh of path segments.
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# should_redraw = True
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return should_ds, should_redraw
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# elif (
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# uppx_diff >= 1
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# or uppx_diff <= -1
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# or self._step_mode and abs(uppx_diff) >= 1
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# ):
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# log.info(
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# f'{self._name} downsampler change: {self._last_uppx} -> {uppx}'
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# )
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# should_ds = {'px_width': px_width, 'uppx': uppx}
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# should_redraw = True
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# if should_ds:
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# should_ds = {'px_width': px_width, 'uppx': uppx}
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# return should_ds, should_redraw
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def downsample(
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self,
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@ -303,9 +314,17 @@ class FastAppendCurve(pg.GraphicsObject):
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def update_from_array(
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self,
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# full array input history
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x: np.ndarray,
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y: np.ndarray,
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# pre-sliced array data that's "in view"
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x_iv: np.ndarray,
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y_iv: np.ndarray,
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view_range: Optional[tuple[int, int]] = None,
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) -> QtGui.QPainterPath:
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'''
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Update curve from input 2-d data.
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@ -315,7 +334,7 @@ class FastAppendCurve(pg.GraphicsObject):
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'''
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profiler = pg.debug.Profiler(
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msg=f'{self._name}.update_from_array()',
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msg=f'FastAppendCurve.update_from_array(): `{self._name}`',
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disabled=not pg_profile_enabled(),
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gt=ms_slower_then,
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)
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@ -327,75 +346,246 @@ class FastAppendCurve(pg.GraphicsObject):
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self._xrange = istart, istop = x[0], x[-1]
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# print(f"xrange: {self._xrange}")
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should_ds, should_redraw = self.should_ds_or_redraw()
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# XXX: lol brutal, the internals of `CurvePoint` (inherited by
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# our `LineDot`) required ``.getData()`` to work..
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self.xData = x
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self.yData = y
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self._x, self._y = x, y
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# _, x_last = self._xrange = x[0], x[-1]
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# vr = self.viewRect()
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# l, r = int(vr.left()), int(vr.right())
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# l, r = self.view_range()
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# array = self._arrays[self.name]
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# start_index = ohlc[0]['index']
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# lbar = max(l, start_index) - start_index
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# rbar = min(r, ohlc[-1]['index']) - start_index
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if view_range:
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# lbar, rbar = view_range
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# x, y = x[lbar:rbar], y[lbar:rbar]
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# x, y = x_iv, y_iv
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profiler(f'view range slice {view_range}')
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# if self._name == 'OHLC':
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# print(f'view range slice {view_range}')
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# ds state checking
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uppx = self.x_uppx()
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px_width = self.px_width()
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uppx_diff = (uppx - self._last_uppx)
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self._last_uppx = uppx
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# step mode: draw flat top discrete "step"
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# over the index space for each datum.
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if self._step_mode:
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# TODO: numba this bish
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# x_out, y_out = step_path_arrays_from_1d(
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# x[:-1], y[:-1]
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# )
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x_iv_out, y_iv_out = step_path_arrays_from_1d(
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x_iv[:-1], y_iv[:-1]
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)
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profiler('generated step arrays')
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else:
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# by default we only pull data up to the last (current) index
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# x_out, y_out = x[:-1], y[:-1]
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x_iv_out, y_iv_out = x_iv[:-1], y_iv[:-1]
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profiler('sliced array history')
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# by default plan to draw the source ouput that's "in view"
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x_to_path, y_to_path = x_iv_out, y_iv_out
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ds_key = px_width, uppx
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# check for downsampling conditions
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if (
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# std m4 downsample conditions
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uppx_diff >= 4
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or uppx_diff <= -2
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or self._step_mode and abs(uppx_diff) >= 2
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):
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log.info(
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f'{self._name} sampler change: {self._last_uppx} -> {uppx}'
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)
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# should_ds = {'px_width': px_width, 'uppx': uppx}
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# if self._step_mode:
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# # TODO: numba this bish
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# x_out, y_out = step_path_arrays_from_1d(
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# x_iv[:-1], y_iv[:-1]
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# )
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# else:
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# # by default we only pull data up to the last (current) index
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# x_out, y_out = x_iv[:-1], y_iv[:-1]
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x_ds_out, y_ds_out = self.downsample(
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x_iv_out,
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y_iv_out,
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px_width=px_width,
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uppx=uppx,
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)
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profiler(f'path downsample ds_key={ds_key}')
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# cache downsampled outputs
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self._ds_cache[ds_key] = x_ds_out, y_ds_out, x[-1]
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x_to_path = x_ds_out
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y_to_path = y_ds_out
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self._in_ds = True
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elif (
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uppx <= 8
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and self._in_ds
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):
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# we should de-downsample back to our original
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# source data so we clear our path data in prep
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# to generate a new one from original source data.
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if self.path:
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self.path.clear()
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if self.fast_path:
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self.fast_path.clear()
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log.info(f'DEDOWN -> {self._name}')
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profiler('path reversion to non-ds data')
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self._in_ds = False
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# always re-ds if we were dsed but the input range changes.
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elif (
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self._in_ds # and self._last_vr != view_range
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):
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# slice out the portion of the downsampled data that is
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# "in view" and **only** draw a path for that.
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entry = self._ds_cache.get(ds_key)
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if entry:
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x_ds_out, y_ds_out, last_i = entry
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# if last_i == x[-1]:
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log.info(
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f'{self._name} has cached ds {ds_key} -> {entry}'
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)
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# x_to_path = x_ds_out
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# y_to_path = y_ds_out
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# else:
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# log.warn(f'{self._name} ds updates unhandled!')
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# DS only the new part?
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# render path graphics
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log.info(
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# f'{self._name}: last sizes {x_to_path.size}, {y_to_path.size}',
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f'{self._name}: sizes {x_to_path.size}, {y_to_path.size}',
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)
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self._last_topaths = x_to_path, y_to_path
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no_path_yet = self.path is None
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self.path = pg.functions.arrayToQPath(
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x_to_path,
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y_to_path,
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connect='all',
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finiteCheck=False,
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path=self.path,
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)
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profiler(f'DRAW PATH IN VIEW -> {self._name}')
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self._last_vr = view_range
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# reserve mem allocs see:
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# - https://doc.qt.io/qt-5/qpainterpath.html#reserve
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# - https://doc.qt.io/qt-5/qpainterpath.html#capacity
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# - https://doc.qt.io/qt-5/qpainterpath.html#clear
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# XXX: right now this is based on had hoc checks on a
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# hidpi 3840x2160 4k monitor but we should optimize for
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# the target display(s) on the sys.
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if no_path_yet:
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self.path.reserve(int(500e3))
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profiler('generated fresh path')
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# if should_redraw and not should_ds:
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# log.info(f'DEDOWN -> {self._name}')
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# self._in_ds = False
|
||||
|
||||
# should_ds, should_redraw = self.should_ds_or_redraw()
|
||||
# print(
|
||||
# f'{self._name} should ds: {should_ds}')
|
||||
|
||||
# if self._in_ds:
|
||||
# if should_ds or view_range:
|
||||
|
||||
# compute the length diffs between the first/last index entry in
|
||||
# the input data and the last indexes we have on record from the
|
||||
# last time we updated the curve index.
|
||||
prepend_length = int(istart - x[0])
|
||||
append_length = int(x[-1] - istop)
|
||||
no_path_yet = self.path is None
|
||||
|
||||
if (
|
||||
should_redraw or should_ds
|
||||
or self.path is None
|
||||
or prepend_length > 0
|
||||
):
|
||||
# step mode: draw flat top discrete "step"
|
||||
# over the index space for each datum.
|
||||
if self._step_mode:
|
||||
x_out, y_out = step_path_arrays_from_1d(
|
||||
x[:-1], y[:-1]
|
||||
)
|
||||
profiler('generated step arrays')
|
||||
# append_length = int(x[-1] - istop)
|
||||
|
||||
else:
|
||||
# by default we only pull data up to the last (current) index
|
||||
x_out, y_out = x[:-1], y[:-1]
|
||||
# if (
|
||||
# view_range
|
||||
# or should_redraw or should_ds
|
||||
# or self.path is None
|
||||
# or prepend_length > 0
|
||||
# ):
|
||||
# # step mode: draw flat top discrete "step"
|
||||
# # over the index space for each datum.
|
||||
# if self._step_mode:
|
||||
# x_out, y_out = step_path_arrays_from_1d(
|
||||
# x[:-1], y[:-1]
|
||||
# )
|
||||
# # TODO: numba this bish
|
||||
# profiler('generated step arrays')
|
||||
|
||||
if should_ds:
|
||||
x_out, y_out = self.downsample(
|
||||
x_out,
|
||||
y_out,
|
||||
**should_ds,
|
||||
)
|
||||
profiler(f'path downsample redraw={should_ds}')
|
||||
self._in_ds = True
|
||||
# else:
|
||||
# # by default we only pull data up to the last (current) index
|
||||
# x_out, y_out = x[:-1], y[:-1]
|
||||
|
||||
if should_redraw:
|
||||
profiler('path reversion to non-ds')
|
||||
if self.path:
|
||||
self.path.clear()
|
||||
|
||||
if self.fast_path:
|
||||
self.fast_path.clear()
|
||||
# if should_redraw:
|
||||
# profiler('path reversion to non-ds')
|
||||
# if self.path:
|
||||
# self.path.clear()
|
||||
|
||||
if should_redraw and not should_ds:
|
||||
log.info(f'DEDOWN -> {self._name}')
|
||||
self._in_ds = False
|
||||
# if self.fast_path:
|
||||
# self.fast_path.clear()
|
||||
|
||||
# else:
|
||||
self.path = pg.functions.arrayToQPath(
|
||||
x_out,
|
||||
y_out,
|
||||
connect='all',
|
||||
finiteCheck=False,
|
||||
path=self.path,
|
||||
)
|
||||
# reserve mem allocs see:
|
||||
# - https://doc.qt.io/qt-5/qpainterpath.html#reserve
|
||||
# - https://doc.qt.io/qt-5/qpainterpath.html#capacity
|
||||
# - https://doc.qt.io/qt-5/qpainterpath.html#clear
|
||||
# XXX: right now this is based on had hoc checks on a
|
||||
# hidpi 3840x2160 4k monitor but we should optimize for
|
||||
# the target display(s) on the sys.
|
||||
if no_path_yet:
|
||||
self.path.reserve(int(500e3))
|
||||
# if should_redraw and not should_ds:
|
||||
# log.info(f'DEDOWN -> {self._name}')
|
||||
# self._in_ds = False
|
||||
|
||||
profiler('generated fresh path')
|
||||
# self.path = pg.functions.arrayToQPath(
|
||||
# x_out,
|
||||
# y_out,
|
||||
# connect='all',
|
||||
# finiteCheck=False,
|
||||
# path=self.path,
|
||||
# )
|
||||
# profiler(f'DRAW PATH IN VIEW -> {self._name}')
|
||||
|
||||
# if self._step_mode:
|
||||
# self.path.closeSubpath()
|
||||
# self._last_vr = view_range
|
||||
# # reserve mem allocs see:
|
||||
# # - https://doc.qt.io/qt-5/qpainterpath.html#reserve
|
||||
# # - https://doc.qt.io/qt-5/qpainterpath.html#capacity
|
||||
# # - https://doc.qt.io/qt-5/qpainterpath.html#clear
|
||||
# # XXX: right now this is based on had hoc checks on a
|
||||
# # hidpi 3840x2160 4k monitor but we should optimize for
|
||||
# # the target display(s) on the sys.
|
||||
# # if no_path_yet:
|
||||
# # self.path.reserve(int(500e3))
|
||||
|
||||
# profiler('generated fresh path')
|
||||
|
||||
# if self._step_mode:
|
||||
# self.path.closeSubpath()
|
||||
|
||||
# TODO: get this piecewise prepend working - right now it's
|
||||
# giving heck on vwap...
|
||||
|
|
@ -414,65 +604,65 @@ class FastAppendCurve(pg.GraphicsObject):
|
|||
# # self.path.moveTo(new_x[0], new_y[0])
|
||||
# self.path.connectPath(old_path)
|
||||
|
||||
elif (
|
||||
append_length > 0
|
||||
):
|
||||
if self._step_mode:
|
||||
new_x, new_y = step_path_arrays_from_1d(
|
||||
x[-append_length - 2:-1],
|
||||
y[-append_length - 2:-1],
|
||||
)
|
||||
# [1:] since we don't need the vertical line normally at
|
||||
# the beginning of the step curve taking the first (x,
|
||||
# y) poing down to the x-axis **because** this is an
|
||||
# appended path graphic.
|
||||
new_x = new_x[1:]
|
||||
new_y = new_y[1:]
|
||||
# elif (
|
||||
# append_length > 0
|
||||
# ):
|
||||
# if self._step_mode:
|
||||
# new_x, new_y = step_path_arrays_from_1d(
|
||||
# x[-append_length - 2:-1],
|
||||
# y[-append_length - 2:-1],
|
||||
# )
|
||||
# # [1:] since we don't need the vertical line normally at
|
||||
# # the beginning of the step curve taking the first (x,
|
||||
# # y) poing down to the x-axis **because** this is an
|
||||
# # appended path graphic.
|
||||
# new_x = new_x[1:]
|
||||
# new_y = new_y[1:]
|
||||
|
||||
else:
|
||||
# print(f"append_length: {append_length}")
|
||||
new_x = x[-append_length - 2:-1]
|
||||
new_y = y[-append_length - 2:-1]
|
||||
# print((new_x, new_y))
|
||||
# else:
|
||||
# # print(f"append_length: {append_length}")
|
||||
# new_x = x[-append_length - 2:-1]
|
||||
# new_y = y[-append_length - 2:-1]
|
||||
# # print((new_x, new_y))
|
||||
|
||||
profiler('diffed append arrays')
|
||||
# profiler('diffed append arrays')
|
||||
|
||||
if should_ds:
|
||||
new_x, new_y = self.downsample(
|
||||
new_x,
|
||||
new_y,
|
||||
**should_ds,
|
||||
)
|
||||
profiler(f'fast path downsample redraw={should_ds}')
|
||||
# if should_ds:
|
||||
# new_x, new_y = self.downsample(
|
||||
# new_x,
|
||||
# new_y,
|
||||
# **should_ds,
|
||||
# )
|
||||
# profiler(f'fast path downsample redraw={should_ds}')
|
||||
|
||||
append_path = pg.functions.arrayToQPath(
|
||||
new_x,
|
||||
new_y,
|
||||
connect='all',
|
||||
finiteCheck=False,
|
||||
path=self.fast_path,
|
||||
)
|
||||
# append_path = pg.functions.arrayToQPath(
|
||||
# new_x,
|
||||
# new_y,
|
||||
# connect='all',
|
||||
# finiteCheck=False,
|
||||
# path=self.fast_path,
|
||||
# )
|
||||
|
||||
if self.use_fpath:
|
||||
# an attempt at trying to make append-updates faster..
|
||||
if self.fast_path is None:
|
||||
self.fast_path = append_path
|
||||
self.fast_path.reserve(int(6e3))
|
||||
else:
|
||||
self.fast_path.connectPath(append_path)
|
||||
size = self.fast_path.capacity()
|
||||
profiler(f'connected fast path w size: {size}')
|
||||
# if self.use_fpath:
|
||||
# # an attempt at trying to make append-updates faster..
|
||||
# if self.fast_path is None:
|
||||
# self.fast_path = append_path
|
||||
# self.fast_path.reserve(int(6e3))
|
||||
# else:
|
||||
# self.fast_path.connectPath(append_path)
|
||||
# size = self.fast_path.capacity()
|
||||
# profiler(f'connected fast path w size: {size}')
|
||||
|
||||
# print(f"append_path br: {append_path.boundingRect()}")
|
||||
# self.path.moveTo(new_x[0], new_y[0])
|
||||
# path.connectPath(append_path)
|
||||
# # print(f"append_path br: {append_path.boundingRect()}")
|
||||
# # self.path.moveTo(new_x[0], new_y[0])
|
||||
# # path.connectPath(append_path)
|
||||
|
||||
# XXX: lol this causes a hang..
|
||||
# self.path = self.path.simplified()
|
||||
else:
|
||||
size = self.path.capacity()
|
||||
profiler(f'connected history path w size: {size}')
|
||||
self.path.connectPath(append_path)
|
||||
# # XXX: lol this causes a hang..
|
||||
# # self.path = self.path.simplified()
|
||||
# else:
|
||||
# size = self.path.capacity()
|
||||
# profiler(f'connected history path w size: {size}')
|
||||
# self.path.connectPath(append_path)
|
||||
|
||||
# other merging ideas:
|
||||
# https://stackoverflow.com/questions/8936225/how-to-merge-qpainterpaths
|
||||
|
|
@ -487,8 +677,8 @@ class FastAppendCurve(pg.GraphicsObject):
|
|||
# # XXX: super slow set "union" op
|
||||
# self.path = self.path.united(append_path).simplified()
|
||||
|
||||
# self.disable_cache()
|
||||
# flip_cache = True
|
||||
# self.disable_cache()
|
||||
# flip_cache = True
|
||||
|
||||
# XXX: do we need this any more?
|
||||
# if (
|
||||
|
|
@ -497,12 +687,7 @@ class FastAppendCurve(pg.GraphicsObject):
|
|||
# self.disable_cache()
|
||||
# flip_cache = True
|
||||
|
||||
# XXX: lol brutal, the internals of `CurvePoint` (inherited by
|
||||
# our `LineDot`) required ``.getData()`` to work..
|
||||
self.xData = x
|
||||
self.yData = y
|
||||
|
||||
x0, x_last = self._xrange = x[0], x[-1]
|
||||
x_last = x[-1]
|
||||
y_last = y[-1]
|
||||
|
||||
# draw the "current" step graphic segment so it lines up with
|
||||
|
|
@ -540,8 +725,6 @@ class FastAppendCurve(pg.GraphicsObject):
|
|||
# XXX: seems to be needed to avoid artifacts (see above).
|
||||
self.setCacheMode(QGraphicsItem.DeviceCoordinateCache)
|
||||
|
||||
self._x, self._y = x, y
|
||||
|
||||
# XXX: lol brutal, the internals of `CurvePoint` (inherited by
|
||||
# our `LineDot`) required ``.getData()`` to work..
|
||||
def getData(self):
|
||||
|
|
@ -636,6 +819,7 @@ class FastAppendCurve(pg.GraphicsObject):
|
|||
profiler = pg.debug.Profiler(
|
||||
msg=f'FastAppendCurve.paint(): `{self._name}`',
|
||||
disabled=not pg_profile_enabled(),
|
||||
# disabled=True,
|
||||
gt=ms_slower_then,
|
||||
)
|
||||
|
||||
|
|
|
|||
|
|
@ -20,6 +20,7 @@ Chart view box primitives
|
|||
"""
|
||||
from __future__ import annotations
|
||||
from contextlib import asynccontextmanager
|
||||
# import itertools
|
||||
import time
|
||||
from typing import Optional, Callable
|
||||
|
||||
|
|
@ -36,7 +37,7 @@ from ..log import get_logger
|
|||
from ._style import _min_points_to_show
|
||||
from ._editors import SelectRect
|
||||
from . import _event
|
||||
from ._ohlc import BarItems
|
||||
# from ._ohlc import BarItems
|
||||
|
||||
|
||||
log = get_logger(__name__)
|
||||
|
|
@ -319,6 +320,7 @@ async def handle_viewmode_mouse(
|
|||
):
|
||||
# when in order mode, submit execution
|
||||
# msg.event.accept()
|
||||
# breakpoint()
|
||||
view.order_mode.submit_order()
|
||||
|
||||
|
||||
|
|
@ -384,6 +386,29 @@ class ChartView(ViewBox):
|
|||
self.order_mode: bool = False
|
||||
|
||||
self.setFocusPolicy(QtCore.Qt.StrongFocus)
|
||||
self._ic = None
|
||||
|
||||
def start_ic(
|
||||
self,
|
||||
) -> None:
|
||||
if self._ic is None:
|
||||
self.chart.pause_all_feeds()
|
||||
self._ic = trio.Event()
|
||||
|
||||
def signal_ic(
|
||||
self,
|
||||
*args,
|
||||
# ev = None,
|
||||
) -> None:
|
||||
if args:
|
||||
print(f'range change dun: {args}')
|
||||
else:
|
||||
print('proxy called')
|
||||
|
||||
if self._ic:
|
||||
self._ic.set()
|
||||
self._ic = None
|
||||
self.chart.resume_all_feeds()
|
||||
|
||||
@asynccontextmanager
|
||||
async def open_async_input_handler(
|
||||
|
|
@ -429,11 +454,6 @@ class ChartView(ViewBox):
|
|||
def maxmin(self, callback: Callable) -> None:
|
||||
self._maxmin = callback
|
||||
|
||||
def maybe_downsample_graphics(self):
|
||||
for graphic in self._chart._graphics.values():
|
||||
if isinstance(graphic, BarItems):
|
||||
graphic.maybe_paint_line()
|
||||
|
||||
def wheelEvent(
|
||||
self,
|
||||
ev,
|
||||
|
|
@ -542,6 +562,11 @@ class ChartView(ViewBox):
|
|||
self._resetTarget()
|
||||
self.scaleBy(s, focal)
|
||||
self.sigRangeChangedManually.emit(mask)
|
||||
|
||||
# self._ic.set()
|
||||
# self._ic = None
|
||||
# self.chart.resume_all_feeds()
|
||||
|
||||
ev.accept()
|
||||
|
||||
def mouseDragEvent(
|
||||
|
|
@ -624,6 +649,11 @@ class ChartView(ViewBox):
|
|||
# XXX: WHY
|
||||
ev.accept()
|
||||
|
||||
self.start_ic()
|
||||
# if self._ic is None:
|
||||
# self.chart.pause_all_feeds()
|
||||
# self._ic = trio.Event()
|
||||
|
||||
if axis == 1:
|
||||
self.chart._static_yrange = 'axis'
|
||||
|
||||
|
|
@ -641,6 +671,13 @@ class ChartView(ViewBox):
|
|||
|
||||
self.sigRangeChangedManually.emit(self.state['mouseEnabled'])
|
||||
|
||||
if ev.isFinish():
|
||||
print('DRAG FINISH')
|
||||
self.signal_ic()
|
||||
# self._ic.set()
|
||||
# self._ic = None
|
||||
# self.chart.resume_all_feeds()
|
||||
|
||||
# WEIRD "RIGHT-CLICK CENTER ZOOM" MODE
|
||||
elif button & QtCore.Qt.RightButton:
|
||||
|
||||
|
|
@ -788,11 +825,13 @@ class ChartView(ViewBox):
|
|||
# iterate those.
|
||||
# - only register this when certain downsampleable graphics are
|
||||
# "added to scene".
|
||||
vb.sigRangeChangedManually.connect(vb.maybe_downsample_graphics)
|
||||
vb.sigXRangeChanged.connect(vb.maybe_downsample_graphics)
|
||||
|
||||
# mouse wheel doesn't emit XRangeChanged
|
||||
vb.sigRangeChangedManually.connect(vb._set_yrange)
|
||||
vb.sigResized.connect(vb._set_yrange) # splitter(s) resizing
|
||||
|
||||
# splitter(s) resizing
|
||||
vb.sigResized.connect(vb._set_yrange)
|
||||
|
||||
def disable_auto_yrange(
|
||||
self,
|
||||
|
|
@ -808,10 +847,27 @@ class ChartView(ViewBox):
|
|||
|
||||
'''
|
||||
for graphic in self._chart._graphics.values():
|
||||
# if isinstance(graphic, BarItems):
|
||||
xpx = graphic.pixelVectors()[0].x()
|
||||
if xpx:
|
||||
return xpx
|
||||
xvec = graphic.pixelVectors()[0]
|
||||
if xvec:
|
||||
xpx = xvec.x()
|
||||
if xpx:
|
||||
return xpx
|
||||
else:
|
||||
continue
|
||||
return 1.0
|
||||
|
||||
def maybe_downsample_graphics(self):
|
||||
|
||||
# TODO: a faster single-loop-iterator way of doing this XD
|
||||
chart = self._chart
|
||||
# graphics = list(self._chart._graphics.values())
|
||||
|
||||
for name, graphics in chart._graphics.items():
|
||||
# pass in no array which will read and render from the last
|
||||
# passed array (normally provided by the display loop.)
|
||||
chart.update_graphics_from_array(name)
|
||||
|
||||
# for graphic in graphics:
|
||||
# ds_meth = getattr(graphic, 'maybe_downsample', None)
|
||||
# if ds_meth:
|
||||
# ds_meth()
|
||||
|
|
|
|||
|
|
@ -157,23 +157,40 @@ def path_arrays_from_ohlc(
|
|||
|
||||
|
||||
def gen_qpath(
|
||||
data,
|
||||
start, # XXX: do we need this?
|
||||
w,
|
||||
data: np.ndarray,
|
||||
start: int, # XXX: do we need this?
|
||||
w: float,
|
||||
path: Optional[QtGui.QPainterPath] = None,
|
||||
|
||||
) -> QtGui.QPainterPath:
|
||||
|
||||
path_was_none = path is None
|
||||
|
||||
profiler = pg.debug.Profiler(
|
||||
msg=f'gen_qpath ohlc',
|
||||
msg='gen_qpath ohlc',
|
||||
disabled=not pg_profile_enabled(),
|
||||
gt=ms_slower_then,
|
||||
)
|
||||
|
||||
x, y, c = path_arrays_from_ohlc(data, start, bar_gap=w)
|
||||
x, y, c = path_arrays_from_ohlc(
|
||||
data,
|
||||
start,
|
||||
bar_gap=w,
|
||||
)
|
||||
profiler("generate stream with numba")
|
||||
|
||||
# TODO: numba the internals of this!
|
||||
path = pg.functions.arrayToQPath(x, y, connect=c)
|
||||
path = pg.functions.arrayToQPath(
|
||||
x,
|
||||
y,
|
||||
connect=c,
|
||||
path=path,
|
||||
)
|
||||
|
||||
# avoid mem allocs if possible
|
||||
if path_was_none:
|
||||
path.reserve(path.capacity())
|
||||
|
||||
profiler("generate path with arrayToQPath")
|
||||
|
||||
return path
|
||||
|
|
@ -206,6 +223,7 @@ class BarItems(pg.GraphicsObject):
|
|||
self._color = pen_color
|
||||
self.bars_pen = pg.mkPen(hcolor(pen_color), width=1)
|
||||
self.last_bar_pen = pg.mkPen(hcolor(last_bar_color), width=2)
|
||||
self._name = name
|
||||
|
||||
self._ds_line_xy: Optional[
|
||||
tuple[np.ndarray, np.ndarray]
|
||||
|
|
@ -226,6 +244,7 @@ class BarItems(pg.GraphicsObject):
|
|||
|
||||
self._xrange: tuple[int, int]
|
||||
self._yrange: tuple[float, float]
|
||||
self._vrange = None
|
||||
|
||||
# TODO: don't render the full backing array each time
|
||||
# self._path_data = None
|
||||
|
|
@ -254,7 +273,6 @@ class BarItems(pg.GraphicsObject):
|
|||
|
||||
'''
|
||||
hist, last = ohlc[:-1], ohlc[-1]
|
||||
|
||||
self.path = gen_qpath(hist, start, self.w)
|
||||
|
||||
# save graphics for later reference and keep track
|
||||
|
|
@ -270,65 +288,101 @@ class BarItems(pg.GraphicsObject):
|
|||
# up to last to avoid double draw of last bar
|
||||
self._last_bar_lines = bar_from_ohlc_row(last, self.w)
|
||||
|
||||
x, y = self._ds_line_xy = ohlc_flatten(ohlc)
|
||||
|
||||
# self.update_ds_line(
|
||||
# x,
|
||||
# y,
|
||||
# )
|
||||
|
||||
# TODO: figuring out the most optimial size for the ideal
|
||||
# curve-path by,
|
||||
# - calcing the display's max px width `.screen()`
|
||||
# - drawing a curve and figuring out it's capacity:
|
||||
# https://doc.qt.io/qt-5/qpainterpath.html#capacity
|
||||
# - reserving that cap for each curve-mapped-to-shm with
|
||||
|
||||
# - leveraging clearing when needed to redraw the entire
|
||||
# curve that does not release mem allocs:
|
||||
# https://doc.qt.io/qt-5/qpainterpath.html#clear
|
||||
curve = FastAppendCurve(
|
||||
y=y,
|
||||
x=x,
|
||||
name='OHLC',
|
||||
color=self._color,
|
||||
)
|
||||
curve.hide()
|
||||
self._pi.addItem(curve)
|
||||
self._ds_line = curve
|
||||
|
||||
self._ds_xrange = (index[0], index[-1])
|
||||
|
||||
# trigger render
|
||||
# https://doc.qt.io/qt-5/qgraphicsitem.html#update
|
||||
self.update()
|
||||
|
||||
x, y = self._ds_line_xy = ohlc_flatten(ohlc)
|
||||
self.update_ds_line(x, y)
|
||||
self._ds_xrange = (index[0], index[-1])
|
||||
return self.path
|
||||
|
||||
def update_ds_line(
|
||||
self,
|
||||
x,
|
||||
y,
|
||||
# def update_ds_line(
|
||||
# self,
|
||||
# x,
|
||||
# y,
|
||||
|
||||
) -> FastAppendCurve:
|
||||
# ) -> FastAppendCurve:
|
||||
|
||||
# determine current potential downsampling value (based on pixel
|
||||
# scaling) and return any existing curve for it.
|
||||
curve = self._ds_line
|
||||
# # determine current potential downsampling value (based on pixel
|
||||
# # scaling) and return any existing curve for it.
|
||||
# curve = self._ds_line
|
||||
|
||||
if not curve:
|
||||
# TODO: figuring out the most optimial size for the ideal
|
||||
# curve-path by,
|
||||
# - calcing the display's max px width `.screen()`
|
||||
# - drawing a curve and figuring out it's capacity:
|
||||
# https://doc.qt.io/qt-5/qpainterpath.html#capacity
|
||||
# - reserving that cap for each curve-mapped-to-shm with
|
||||
# if not curve:
|
||||
# # TODO: figuring out the most optimial size for the ideal
|
||||
# # curve-path by,
|
||||
# # - calcing the display's max px width `.screen()`
|
||||
# # - drawing a curve and figuring out it's capacity:
|
||||
# # https://doc.qt.io/qt-5/qpainterpath.html#capacity
|
||||
# # - reserving that cap for each curve-mapped-to-shm with
|
||||
|
||||
# - leveraging clearing when needed to redraw the entire
|
||||
# curve that does not release mem allocs:
|
||||
# https://doc.qt.io/qt-5/qpainterpath.html#clear
|
||||
curve = FastAppendCurve(
|
||||
y=y,
|
||||
x=x,
|
||||
name='OHLC',
|
||||
color=self._color,
|
||||
)
|
||||
curve.hide()
|
||||
self._pi.addItem(curve)
|
||||
self._ds_line = curve
|
||||
return curve
|
||||
# # - leveraging clearing when needed to redraw the entire
|
||||
# # curve that does not release mem allocs:
|
||||
# # https://doc.qt.io/qt-5/qpainterpath.html#clear
|
||||
# curve = FastAppendCurve(
|
||||
# y=y,
|
||||
# x=x,
|
||||
# name='OHLC',
|
||||
# color=self._color,
|
||||
# )
|
||||
# curve.hide()
|
||||
# self._pi.addItem(curve)
|
||||
# self._ds_line = curve
|
||||
|
||||
# TODO: we should be diffing the amount of new data which
|
||||
# needs to be downsampled. Ideally we actually are just
|
||||
# doing all the ds-ing in sibling actors so that the data
|
||||
# can just be read and rendered to graphics on events of our
|
||||
# choice.
|
||||
# diff = do_diff(ohlc, new_bit)
|
||||
# return curve
|
||||
|
||||
curve.update_from_array(
|
||||
y=y,
|
||||
x=x,
|
||||
)
|
||||
return curve
|
||||
# # TODO: we should be diffing the amount of new data which
|
||||
# # needs to be downsampled. Ideally we actually are just
|
||||
# # doing all the ds-ing in sibling actors so that the data
|
||||
# # can just be read and rendered to graphics on events of our
|
||||
# # choice.
|
||||
# # diff = do_diff(ohlc, new_bit)
|
||||
|
||||
# curve.update_from_array(
|
||||
# y=y,
|
||||
# x=x,
|
||||
# x_iv=x,
|
||||
# y_iv=y,
|
||||
# view_range=True, # hack
|
||||
# )
|
||||
# return curve
|
||||
|
||||
def update_from_array(
|
||||
self,
|
||||
|
||||
# full array input history
|
||||
ohlc: np.ndarray,
|
||||
just_history=False,
|
||||
|
||||
# pre-sliced array data that's "in view"
|
||||
ohlc_iv: np.ndarray,
|
||||
|
||||
view_range: Optional[tuple[int, int]] = None,
|
||||
|
||||
) -> None:
|
||||
'''
|
||||
|
|
@ -349,6 +403,19 @@ class BarItems(pg.GraphicsObject):
|
|||
gt=ms_slower_then,
|
||||
)
|
||||
|
||||
# vr = self.viewRect()
|
||||
# l, r = int(vr.left()), int(vr.right())
|
||||
# # l, r = self.view_range()
|
||||
# # array = self._arrays[self.name]
|
||||
# indexes = ohlc['index']
|
||||
# start_index = indexes[0]
|
||||
# end_index = indexes[-1]
|
||||
|
||||
# lbar = max(l, start_index) - start_index
|
||||
# rbar = min(r, end_index) - start_index
|
||||
# in_view = ohlc[lbar:rbar]
|
||||
# self._vrange = lbar, rbar
|
||||
|
||||
# index = self.start_index
|
||||
istart, istop = self._xrange
|
||||
ds_istart, ds_istop = self._ds_xrange
|
||||
|
|
@ -360,11 +427,149 @@ class BarItems(pg.GraphicsObject):
|
|||
prepend_length = istart - first_index
|
||||
append_length = last_index - istop
|
||||
|
||||
ds_prepend_length = ds_istart - first_index
|
||||
ds_append_length = last_index - ds_istop
|
||||
# ds_prepend_length = ds_istart - first_index
|
||||
# ds_append_length = last_index - ds_istop
|
||||
|
||||
flip_cache = False
|
||||
|
||||
x_gt = 2
|
||||
if self._ds_line:
|
||||
uppx = self._ds_line.x_uppx()
|
||||
else:
|
||||
uppx = 0
|
||||
|
||||
should_line = self._in_ds
|
||||
if (
|
||||
self._in_ds
|
||||
and uppx < x_gt
|
||||
):
|
||||
should_line = False
|
||||
|
||||
elif (
|
||||
not self._in_ds
|
||||
and uppx >= x_gt
|
||||
):
|
||||
should_line = True
|
||||
|
||||
# should_ds, should_redraw = self.should_ds_or_redraw()
|
||||
# print(
|
||||
# f'OHLC in line: {self._in_ds}'
|
||||
# f'OHLC should line: {should_line}\n'
|
||||
# # f'OHLC should_redraw: {should_redraw}\n'
|
||||
# )
|
||||
|
||||
if (
|
||||
should_line
|
||||
):
|
||||
# update the line graphic
|
||||
# x, y = self._ds_line_xy = ohlc_flatten(ohlc_iv)
|
||||
# x, y = self._ds_line_xy = ohlc_flatten(ohlc)
|
||||
x_iv, y_iv = self._ds_line_xy = ohlc_flatten(ohlc_iv)
|
||||
profiler('flattening bars to line')
|
||||
|
||||
curve = self._ds_line
|
||||
# curve = self.update_ds_line(x, y)
|
||||
|
||||
# TODO: we should be diffing the amount of new data which
|
||||
# needs to be downsampled. Ideally we actually are just
|
||||
# doing all the ds-ing in sibling actors so that the data
|
||||
# can just be read and rendered to graphics on events of our
|
||||
# choice.
|
||||
# diff = do_diff(ohlc, new_bit)
|
||||
curve.update_from_array(
|
||||
y=x_iv,
|
||||
x=y_iv,
|
||||
x_iv=x_iv,
|
||||
y_iv=y_iv,
|
||||
view_range=view_range, # hack
|
||||
)
|
||||
|
||||
# we already are showing a line and should be
|
||||
# self._in_ds
|
||||
|
||||
# check if the ds line should be resampled/drawn
|
||||
# should_ds_line, should_redraw_line = self._ds_line.should_ds_or_redraw()
|
||||
# print(f'OHLC DS should ds: {should_ds_line}, should_redraw: {should_redraw_line}')
|
||||
|
||||
# if (
|
||||
# # line should be redrawn/sampled
|
||||
# # should_ds_line or
|
||||
|
||||
# # we are flipping to line from bars mode
|
||||
# not self._in_ds
|
||||
# ):
|
||||
# uppx = self._ds_line.x_uppx()
|
||||
# self._xs_in_px = uppx
|
||||
|
||||
|
||||
if not self._in_ds:
|
||||
# hide bars and show line
|
||||
self.hide()
|
||||
# XXX: is this actually any faster?
|
||||
# self._pi.removeItem(self)
|
||||
|
||||
# TODO: a `.ui()` log level?
|
||||
log.info(
|
||||
f'downsampling to line graphic {self._name}'
|
||||
)
|
||||
|
||||
# self._pi.addItem(curve)
|
||||
curve.show()
|
||||
curve.update()
|
||||
self._in_ds = True
|
||||
|
||||
# stop here since we don't need to update bars path any more
|
||||
# as we delegate to the downsample line with updates.
|
||||
return
|
||||
|
||||
elif (
|
||||
not should_line
|
||||
and self._in_ds
|
||||
):
|
||||
# flip back to bars graphics and hide the downsample line.
|
||||
log.info(f'showing bars graphic {self._name}')
|
||||
|
||||
curve = self._ds_line
|
||||
curve.hide()
|
||||
# self._pi.removeItem(curve)
|
||||
|
||||
# XXX: is this actually any faster?
|
||||
# self._pi.addItem(self)
|
||||
self.show()
|
||||
self._in_ds = False
|
||||
|
||||
# if not self._in_ds and should_ds
|
||||
# self.hide()
|
||||
# # XXX: is this actually any faster?
|
||||
# # self._pi.removeItem(self)
|
||||
|
||||
# # this should have been done in the block above
|
||||
# # x, y = self._ds_line_xy = ohlc_flatten(ohlc_iv)
|
||||
# # curve = self.update_ds_line(x, y)
|
||||
|
||||
# # TODO: a `.ui()` log level?
|
||||
# log.info(
|
||||
# f'downsampling to line graphic {self._name}'
|
||||
# )
|
||||
|
||||
# # self._pi.addItem(curve)
|
||||
# curve.show()
|
||||
# curve.update()
|
||||
# self._in_ds = True
|
||||
# return
|
||||
|
||||
# self._in_ds = False
|
||||
|
||||
# print('YO NOT DS OHLC')
|
||||
|
||||
# generate in_view path
|
||||
self.path = gen_qpath(
|
||||
ohlc_iv,
|
||||
0,
|
||||
self.w,
|
||||
# path=self.path,
|
||||
)
|
||||
|
||||
# TODO: to make the downsampling faster
|
||||
# - allow mapping only a range of lines thus only drawing as
|
||||
# many bars as exactly specified.
|
||||
|
|
@ -372,87 +577,97 @@ class BarItems(pg.GraphicsObject):
|
|||
# - maybe move all this embedded logic to a higher
|
||||
# level type?
|
||||
|
||||
fx, fy = self._ds_line_xy
|
||||
# ohlc = in_view
|
||||
|
||||
if prepend_length:
|
||||
# new history was added and we need to render a new path
|
||||
prepend_bars = ohlc[:prepend_length]
|
||||
# if prepend_length:
|
||||
# # new history was added and we need to render a new path
|
||||
# prepend_bars = ohlc[:prepend_length]
|
||||
|
||||
if ds_prepend_length:
|
||||
ds_prepend_bars = ohlc[:ds_prepend_length]
|
||||
pre_x, pre_y = ohlc_flatten(ds_prepend_bars)
|
||||
fx = np.concatenate((pre_x, fx))
|
||||
fy = np.concatenate((pre_y, fy))
|
||||
profiler('ds line prepend diff complete')
|
||||
# if ds_prepend_length:
|
||||
# ds_prepend_bars = ohlc[:ds_prepend_length]
|
||||
# pre_x, pre_y = ohlc_flatten(ds_prepend_bars)
|
||||
# fx = np.concatenate((pre_x, fx))
|
||||
# fy = np.concatenate((pre_y, fy))
|
||||
# profiler('ds line prepend diff complete')
|
||||
|
||||
if append_length:
|
||||
# generate new graphics to match provided array
|
||||
# path appending logic:
|
||||
# we need to get the previous "current bar(s)" for the time step
|
||||
# and convert it to a sub-path to append to the historical set
|
||||
# new_bars = ohlc[istop - 1:istop + append_length - 1]
|
||||
append_bars = ohlc[-append_length - 1:-1]
|
||||
# print(f'ohlc bars to append size: {append_bars.size}\n')
|
||||
# if append_length:
|
||||
# # generate new graphics to match provided array
|
||||
# # path appending logic:
|
||||
# # we need to get the previous "current bar(s)" for the time step
|
||||
# # and convert it to a sub-path to append to the historical set
|
||||
# # new_bars = ohlc[istop - 1:istop + append_length - 1]
|
||||
# append_bars = ohlc[-append_length - 1:-1]
|
||||
# # print(f'ohlc bars to append size: {append_bars.size}\n')
|
||||
|
||||
if ds_append_length:
|
||||
ds_append_bars = ohlc[-ds_append_length - 1:-1]
|
||||
post_x, post_y = ohlc_flatten(ds_append_bars)
|
||||
# print(f'ds curve to append sizes: {(post_x.size, post_y.size)}')
|
||||
fx = np.concatenate((fx, post_x))
|
||||
fy = np.concatenate((fy, post_y))
|
||||
# if ds_append_length:
|
||||
# ds_append_bars = ohlc[-ds_append_length - 1:-1]
|
||||
# post_x, post_y = ohlc_flatten(ds_append_bars)
|
||||
# print(
|
||||
# f'ds curve to append sizes: {(post_x.size, post_y.size)}'
|
||||
# )
|
||||
# fx = np.concatenate((fx, post_x))
|
||||
# fy = np.concatenate((fy, post_y))
|
||||
|
||||
profiler('ds line append diff complete')
|
||||
# profiler('ds line append diff complete')
|
||||
|
||||
profiler('array diffs complete')
|
||||
|
||||
# does this work?
|
||||
last = ohlc[-1]
|
||||
fy[-1] = last['close']
|
||||
# fy[-1] = last['close']
|
||||
|
||||
# incremental update and cache line datums
|
||||
self._ds_line_xy = fx, fy
|
||||
# # incremental update and cache line datums
|
||||
# self._ds_line_xy = fx, fy
|
||||
|
||||
# maybe downsample to line
|
||||
ds = self.maybe_downsample()
|
||||
if ds:
|
||||
# if we downsample to a line don't bother with
|
||||
# any more path generation / updates
|
||||
self._ds_xrange = first_index, last_index
|
||||
profiler('downsampled to line')
|
||||
return
|
||||
# ds = self.maybe_downsample()
|
||||
# if ds:
|
||||
# # if we downsample to a line don't bother with
|
||||
# # any more path generation / updates
|
||||
# self._ds_xrange = first_index, last_index
|
||||
# profiler('downsampled to line')
|
||||
# return
|
||||
|
||||
# print(in_view.size)
|
||||
|
||||
# if self.path:
|
||||
# self.path = path
|
||||
# self.path.reserve(path.capacity())
|
||||
# self.path.swap(path)
|
||||
|
||||
# path updates
|
||||
if prepend_length:
|
||||
# XXX: SOMETHING IS MAYBE FISHY HERE what with the old_path
|
||||
# y value not matching the first value from
|
||||
# ohlc[prepend_length + 1] ???
|
||||
prepend_path = gen_qpath(prepend_bars, 0, self.w)
|
||||
old_path = self.path
|
||||
self.path = prepend_path
|
||||
self.path.addPath(old_path)
|
||||
profiler('path PREPEND')
|
||||
# if prepend_length:
|
||||
# # XXX: SOMETHING IS MAYBE FISHY HERE what with the old_path
|
||||
# # y value not matching the first value from
|
||||
# # ohlc[prepend_length + 1] ???
|
||||
# prepend_path = gen_qpath(prepend_bars, 0, self.w)
|
||||
# old_path = self.path
|
||||
# self.path = prepend_path
|
||||
# self.path.addPath(old_path)
|
||||
# profiler('path PREPEND')
|
||||
|
||||
if append_length:
|
||||
append_path = gen_qpath(append_bars, 0, self.w)
|
||||
# if append_length:
|
||||
# append_path = gen_qpath(append_bars, 0, self.w)
|
||||
|
||||
self.path.moveTo(
|
||||
float(istop - self.w),
|
||||
float(append_bars[0]['open'])
|
||||
)
|
||||
self.path.addPath(append_path)
|
||||
# self.path.moveTo(
|
||||
# float(istop - self.w),
|
||||
# float(append_bars[0]['open'])
|
||||
# )
|
||||
# self.path.addPath(append_path)
|
||||
|
||||
profiler('path APPEND')
|
||||
# fp = self.fast_path
|
||||
# if fp is None:
|
||||
# self.fast_path = append_path
|
||||
# profiler('path APPEND')
|
||||
# fp = self.fast_path
|
||||
# if fp is None:
|
||||
# self.fast_path = append_path
|
||||
|
||||
# else:
|
||||
# fp.moveTo(float(istop - self.w), float(new_bars[0]['open']))
|
||||
# fp.addPath(append_path)
|
||||
|
||||
# self.setCacheMode(QtWidgets.QGraphicsItem.NoCache)
|
||||
# flip_cache = True
|
||||
# else:
|
||||
# fp.moveTo(
|
||||
# float(istop - self.w), float(new_bars[0]['open'])
|
||||
# )
|
||||
# fp.addPath(append_path)
|
||||
|
||||
# self.setCacheMode(QtWidgets.QGraphicsItem.NoCache)
|
||||
# flip_cache = True
|
||||
|
||||
self._xrange = first_index, last_index
|
||||
|
||||
|
|
@ -559,73 +774,69 @@ class BarItems(pg.GraphicsObject):
|
|||
|
||||
)
|
||||
|
||||
def maybe_downsample(
|
||||
self,
|
||||
x_gt: float = 2.,
|
||||
# def should_ds_or_redraw(
|
||||
# self,
|
||||
# x_gt: float = 2,
|
||||
|
||||
) -> bool:
|
||||
'''
|
||||
Call this when you want to stop drawing individual
|
||||
bars and instead use a ``FastAppendCurve`` intepolation
|
||||
line (normally when the width of a bar (aka 1.0 in the x)
|
||||
is less then a pixel width on the device).
|
||||
# ) -> tuple[bool, bool]:
|
||||
|
||||
'''
|
||||
curve = self._ds_line
|
||||
if not curve:
|
||||
return False
|
||||
# curve = self._ds_line
|
||||
# if not curve:
|
||||
# return False, False
|
||||
|
||||
# this is the ``float`` value of the "number of x units" (in
|
||||
# view coords) that a pixel spans.
|
||||
xs_in_px = self._ds_line.x_uppx()
|
||||
# # this is the ``float`` value of the "number of x units" (in
|
||||
# # view coords) that a pixel spans.
|
||||
# uppx = self._ds_line.x_uppx()
|
||||
# print(f'uppx: {uppx}')
|
||||
|
||||
linked = self.linked
|
||||
# # linked = self.linked
|
||||
# should_redraw: bool = False
|
||||
# should_ds: bool = False
|
||||
|
||||
if (
|
||||
self._ds_line_xy is not None
|
||||
):
|
||||
curve = self.update_ds_line(
|
||||
*self._ds_line_xy,
|
||||
)
|
||||
# if (
|
||||
# not self._in_ds
|
||||
# and uppx >= x_gt
|
||||
# ):
|
||||
|
||||
if (
|
||||
not self._in_ds
|
||||
and xs_in_px >= x_gt
|
||||
):
|
||||
# TODO: a `.ui()` log level?
|
||||
log.info(
|
||||
f'downsampling to line graphic {linked.symbol.key}'
|
||||
)
|
||||
self.hide()
|
||||
# XXX: is this actually any faster?
|
||||
# self._pi.removeItem(self)
|
||||
# should_ds = True
|
||||
# should_redraw = True
|
||||
|
||||
self._xs_in_px = xs_in_px
|
||||
# elif (
|
||||
# self._in_ds
|
||||
# and uppx < x_gt
|
||||
# ):
|
||||
# should_ds = False
|
||||
# should_redraw = True
|
||||
|
||||
# self._pi.addItem(curve)
|
||||
curve.show()
|
||||
# if self._in_ds:
|
||||
# should_ds = True
|
||||
|
||||
self._in_ds = True
|
||||
# # no curve change
|
||||
# return should_ds, should_redraw
|
||||
|
||||
elif (
|
||||
self._in_ds
|
||||
and xs_in_px < x_gt
|
||||
):
|
||||
log.info(f'showing bars graphic {linked.symbol.key}')
|
||||
# def maybe_downsample(
|
||||
# self,
|
||||
# x_gt: float = 2,
|
||||
|
||||
curve = self._ds_line
|
||||
curve.hide()
|
||||
# self._pi.removeItem(curve)
|
||||
# ) -> bool:
|
||||
# '''
|
||||
# Call this when you want to stop drawing individual
|
||||
# bars and instead use a ``FastAppendCurve`` intepolation
|
||||
# line (normally when the width of a bar (aka 1.0 in the x)
|
||||
# is less then a pixel width on the device).
|
||||
|
||||
# XXX: is this actually any faster?
|
||||
# self._pi.addItem(self)
|
||||
self.show()
|
||||
self.update()
|
||||
# '''
|
||||
# ds_xy = self._ds_line_xy
|
||||
# if ds_xy:
|
||||
# ds_xy.maybe_downsample()
|
||||
|
||||
self._in_ds = False
|
||||
|
||||
# no curve change
|
||||
return self._in_ds
|
||||
# if (
|
||||
# self._ds_line_xy is not None
|
||||
# and self._in_ds
|
||||
# ):
|
||||
# curve = self.update_ds_line(
|
||||
# *self._ds_line_xy,
|
||||
# )
|
||||
|
||||
def paint(
|
||||
self,
|
||||
|
|
@ -657,20 +868,8 @@ class BarItems(pg.GraphicsObject):
|
|||
|
||||
p.setPen(self.bars_pen)
|
||||
p.drawPath(self.path)
|
||||
profiler('draw history path')
|
||||
profiler(f'draw history path: {self.path.capacity()}')
|
||||
|
||||
# if self.fast_path:
|
||||
# p.drawPath(self.fast_path)
|
||||
# profiler('draw fast path')
|
||||
|
||||
profiler.finish()
|
||||
|
||||
# NOTE: for testing paint frequency as throttled by display loop.
|
||||
# now = time.time()
|
||||
# global _last_draw
|
||||
# print(f'DRAW RATE {1/(now - _last_draw)}')
|
||||
# _last_draw = now
|
||||
|
||||
|
||||
# import time
|
||||
# _last_draw: float = time.time()
|
||||
|
|
|
|||
Loading…
Reference in New Issue