Make curve graphics timeframe agnostic
Ensure `.boundingRect()` calcs and `.draw_last_datum()` do geo-sizing based on source data instead of presuming some `1.0` unit steps in some spots; we need this to support an epoch index as is needed for overlays. Further, clean out a bunch of old bounding rect calc code and add some commented code for trying out `QRectF.united()` on the path + last datum curve segment. Turns out that approach is slower as per eyeballing the added profiler points.multichartz_backup
Tyler Goodlet
parent
7c4d3e7f3b
commit
9ccf08658b
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@ -28,10 +28,7 @@ from PyQt5.QtWidgets import QGraphicsItem
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from PyQt5.QtCore import (
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Qt,
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QLineF,
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QSizeF,
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QRectF,
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# QRect,
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QPointF,
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)
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from PyQt5.QtGui import (
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QPainter,
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@ -89,9 +86,9 @@ class Curve(pg.GraphicsObject):
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'''
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# sub-type customization methods
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sub_br: Optional[Callable] = None
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sub_paint: Optional[Callable] = None
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declare_paintables: Optional[Callable] = None
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sub_paint: Optional[Callable] = None
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# sub_br: Optional[Callable] = None
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def __init__(
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self,
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@ -140,9 +137,7 @@ class Curve(pg.GraphicsObject):
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# self.last_step_pen = pg.mkPen(hcolor(color), width=2)
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self.last_step_pen = pg.mkPen(pen, width=2)
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# self._last_line: Optional[QLineF] = None
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self._last_line = QLineF()
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self._last_w: float = 1
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# flat-top style histogram-like discrete curve
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# self._step_mode: bool = step_mode
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@ -231,8 +226,8 @@ class Curve(pg.GraphicsObject):
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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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self.fast_path = None
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self.fast_path.clear()
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# self.fast_path = None
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@cm
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def reset_cache(self) -> None:
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@ -252,77 +247,81 @@ class Curve(pg.GraphicsObject):
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self.boundingRect = self._path_br
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return self._path_br()
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# Qt docs: https://doc.qt.io/qt-5/qgraphicsitem.html#boundingRect
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def _path_br(self):
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'''
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Post init ``.boundingRect()```.
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'''
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# hb = self.path.boundingRect()
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hb = self.path.controlPointRect()
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hb_size = hb.size()
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fp = self.fast_path
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if fp:
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fhb = fp.controlPointRect()
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hb_size = fhb.size() + hb_size
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# print(f'hb_size: {hb_size}')
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# if self._last_step_rect:
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# hb_size += self._last_step_rect.size()
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# if self._line:
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# br = self._last_step_rect.bottomRight()
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# tl = QPointF(
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# # self._vr[0],
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# # hb.topLeft().y(),
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# # 0,
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# # hb_size.height() + 1
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# )
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# br = self._last_step_rect.bottomRight()
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w = hb_size.width()
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h = hb_size.height()
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sbr = self.sub_br
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if sbr:
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w, h = self.sub_br(w, h)
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else:
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# assume plain line graphic and use
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# default unit step in each direction.
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# only on a plane line do we include
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# and extra index step's worth of width
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# since in the step case the end of the curve
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# actually terminates earlier so we don't need
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# this for the last step.
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w += self._last_w
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# ll = self._last_line
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h += 1 # ll.y2() - ll.y1()
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# br = QPointF(
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# self._vr[-1],
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# # tl.x() + w,
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# tl.y() + h,
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# )
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br = QRectF(
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# top left
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# hb.topLeft()
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# tl,
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QPointF(hb.topLeft()),
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# br,
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# total size
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# QSizeF(hb_size)
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# hb_size,
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QSizeF(w, h)
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profiler = Profiler(
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msg=f'Curve.boundingRect(): `{self._name}`',
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disabled=not pg_profile_enabled(),
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ms_threshold=ms_slower_then,
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)
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pr = self.path.controlPointRect()
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hb_tl, hb_br = (
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pr.topLeft(),
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pr.bottomRight(),
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)
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mn_y = hb_tl.y()
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mx_y = hb_br.y()
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most_left = hb_tl.x()
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most_right = hb_br.x()
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profiler('calc path vertices')
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# TODO: if/when we get fast path appends working in the
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# `Renderer`, then we might need to actually use this..
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# fp = self.fast_path
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# if fp:
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# fhb = fp.controlPointRect()
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# # hb_size = fhb.size() + hb_size
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# br = pr.united(fhb)
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# XXX: *was* a way to allow sub-types to extend the
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# boundingrect calc, but in the one use case for a step curve
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# doesn't seem like we need it as long as the last line segment
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# is drawn as it is?
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# sbr = self.sub_br
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# if sbr:
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# # w, h = self.sub_br(w, h)
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# sub_br = sbr()
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# br = br.united(sub_br)
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# assume plain line graphic and use
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# default unit step in each direction.
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ll = self._last_line
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y1, y2 = ll.y1(), ll.y2()
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x1, x2 = ll.x1(), ll.x2()
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ymn = min(y1, y2, mn_y)
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ymx = max(y1, y2, mx_y)
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most_left = min(x1, x2, most_left)
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most_right = max(x1, x2, most_right)
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profiler('calc last line vertices')
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# ll_br = QRectF(
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# x1,
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# ymn,
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# # NOTE: a legacy snippet, not sure if it still applies?
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# # only on a plane line do we include
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# # and extra index step's worth of width
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# # since in the step case the end of the curve
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# # actually terminates earlier so we don't need
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# # this for the last step.
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# x2 - x1 + 1,
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# ymx,
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# )
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# br = br.united(ll_br)
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# profiler('calc united rects')
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# return br
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return QRectF(
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most_left,
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ymn,
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most_right - most_left + 1,
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ymx,
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)
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# print(f'bounding rect: {br}')
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return br
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def paint(
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self,
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@ -359,6 +358,7 @@ class Curve(pg.GraphicsObject):
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fp = self.fast_path
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if fp:
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# print("DRAWING PATH")
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p.drawPath(fp)
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profiler('.drawPath(fast_path)')
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@ -450,17 +450,20 @@ class StepCurve(Curve):
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y = src_data[array_key]
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x_last = x[-1]
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x_2last = x[-2]
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y_last = y[-1]
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step_size = x_last - x_2last
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half_step = step_size / 2
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# lol, commenting this makes step curves
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# all "black" for me :eyeroll:..
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self._last_line = QLineF(
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x_last - w, 0,
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x_last + w, 0,
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x_2last, 0,
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x_last, 0,
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)
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self._last_step_rect = QRectF(
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x_last - w, 0,
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x_last + w, y_last,
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x_last - half_step, 0,
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step_size, y_last,
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)
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return x, y
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@ -475,11 +478,8 @@ class StepCurve(Curve):
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p.fillRect(self._last_step_rect, self._brush)
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profiler('.fillRect()')
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def sub_br(
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self,
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path_w: float,
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path_h: float,
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) -> (float, float):
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# passthrough
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return path_w, path_h
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# def sub_br(
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# self,
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# parent_br: QRectF | None = None,
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# ) -> QRectF:
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# return self._last_step_rect
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@ -25,8 +25,15 @@ from typing import (
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import numpy as np
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import pyqtgraph as pg
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from PyQt5 import QtCore, QtGui, QtWidgets
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from PyQt5.QtCore import QLineF, QPointF
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from PyQt5 import (
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QtGui,
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QtWidgets,
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)
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from PyQt5.QtCore import (
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QLineF,
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QRectF,
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)
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from PyQt5.QtGui import QPainterPath
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from .._profile import pg_profile_enabled, ms_slower_then
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@ -114,8 +121,13 @@ class BarItems(pg.GraphicsObject):
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# we expect the downsample curve report this.
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return 0
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# Qt docs: https://doc.qt.io/qt-5/qgraphicsitem.html#boundingRect
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def boundingRect(self):
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# Qt docs: https://doc.qt.io/qt-5/qgraphicsitem.html#boundingRect
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profiler = Profiler(
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msg=f'BarItems.boundingRect(): `{self._name}`',
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disabled=not pg_profile_enabled(),
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ms_threshold=ms_slower_then,
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)
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# TODO: Can we do rect caching to make this faster
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# like `pg.PlotCurveItem` does? In theory it's just
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@ -135,32 +147,53 @@ class BarItems(pg.GraphicsObject):
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hb.topLeft(),
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hb.bottomRight(),
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)
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mn_y = hb_tl.y()
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mx_y = hb_br.y()
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most_left = hb_tl.x()
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most_right = hb_br.x()
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profiler('calc path vertices')
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# need to include last bar height or BR will be off
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mx_y = hb_br.y()
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mn_y = hb_tl.y()
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last_lines = self._last_bar_lines
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# OHLC line segments: [hl, o, c]
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last_lines: tuple[QLineF] | None = self._last_bar_lines
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if last_lines:
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body_line = self._last_bar_lines[0]
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if body_line:
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mx_y = max(mx_y, max(body_line.y1(), body_line.y2()))
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mn_y = min(mn_y, min(body_line.y1(), body_line.y2()))
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(
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hl,
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o,
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c,
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) = last_lines
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most_right = c.x2() + 1
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ymx = ymn = c.y2()
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return QtCore.QRectF(
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if hl:
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y1, y2 = hl.y1(), hl.y2()
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ymn = min(y1, y2)
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ymx = max(y1, y2)
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mx_y = max(ymx, mx_y)
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mn_y = min(ymn, mn_y)
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# top left
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QPointF(
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hb_tl.x(),
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mn_y,
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),
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# bottom right
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QPointF(
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hb_br.x() + 1,
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mx_y,
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)
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profiler('calc last bar vertices')
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# TODO: see if this br uniting works faster?
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# last_bar_rect = QRectF(
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# o.x1(),
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# ymn,
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# c.x2() - o.x1() + 1,
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# ymx,
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# )
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# tot_br = hb.united(last_bar_rect)
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# print(
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# f'last datum bar br: {last_bar_rect}\n'
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# f'path br: {hb}\n'
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# f'sum br: {tot_br}\n'
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# )
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# profiler('calc united rects')
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# return tot_br
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return QRectF(
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most_left,
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mn_y,
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most_right - most_left + 1,
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mx_y - mn_y,
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)
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def paint(
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@ -213,11 +246,15 @@ class BarItems(pg.GraphicsObject):
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# relevant fields
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ohlc = src_data[fields]
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last_row = ohlc[-1:]
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# last_row = ohlc[-1:]
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# individual values
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last_row = i, o, h, l, last = ohlc[-1]
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# times = src_data['time']
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# if times[-1] - times[-2]:
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# breakpoint()
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# generate new lines objects for updatable "current bar"
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self._last_bar_lines = bar_from_ohlc_row(last_row)
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@ -248,4 +285,5 @@ class BarItems(pg.GraphicsObject):
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# date / from some previous sample. It's weird though
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# because i've seen it do this to bars i - 3 back?
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# return ohlc['time'], ohlc['close']
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return ohlc['index'], ohlc['close']
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