goodboy
GitHub
commit
8fe2bd6614
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@ -1,5 +1,5 @@
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# piker: trading gear for hackers
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# Copyright (C) 2018-present Tyler Goodlet (in stewardship of piker0)
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# Copyright (C) Tyler Goodlet (in stewardship of pikers)
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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@ -18,21 +18,26 @@
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Anchor funtions for UI placement of annotions.
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'''
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from typing import Callable
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from __future__ import annotations
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from typing import Callable, TYPE_CHECKING
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from PyQt5.QtCore import QPointF
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from PyQt5.QtWidgets import QGraphicsPathItem
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from ._label import Label
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if TYPE_CHECKING:
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from ._axes import PriceAxis
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from ._chart import ChartPlotWidget
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from ._label import Label
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def marker_right_points(
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chart: 'ChartPlotWidget', # noqa
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chart: ChartPlotWidget, # noqa
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marker_size: int = 20,
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) -> (float, float, float):
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'''Return x-dimension, y-axis-aware, level-line marker oriented scene values.
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'''
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Return x-dimension, y-axis-aware, level-line marker oriented scene
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values.
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X values correspond to set the end of a level line, end of
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a paried level line marker, and the right most side of the "right"
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@ -57,16 +62,17 @@ def vbr_left(
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label: Label,
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) -> Callable[..., float]:
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"""Return a closure which gives the scene x-coordinate for the
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leftmost point of the containing view box.
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'''
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Return a closure which gives the scene x-coordinate for the leftmost
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point of the containing view box.
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"""
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'''
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return label.vbr().left
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def right_axis(
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chart: 'ChartPlotWidget', # noqa
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chart: ChartPlotWidget, # noqa
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label: Label,
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side: str = 'left',
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@ -141,13 +147,13 @@ def gpath_pin(
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return path_br.bottomRight() - QPointF(label.w, label.h / 6)
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def pp_tight_and_right(
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label: Label
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) -> QPointF:
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'''Place *just* right of the pp label.
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'''
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Place *just* right of the pp label.
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'''
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txt = label.txt
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# txt = label.txt
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return label.txt.pos() + QPointF(label.w - label.h/3, 0)
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@ -18,8 +18,8 @@
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Chart axes graphics and behavior.
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"""
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import functools
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from typing import List, Tuple, Optional
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from functools import lru_cache
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from typing import List, Tuple, Optional, Callable
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from math import floor
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import pandas as pd
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@ -27,8 +27,10 @@ import pyqtgraph as pg
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from PyQt5 import QtCore, QtGui, QtWidgets
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from PyQt5.QtCore import QPointF
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from ._style import DpiAwareFont, hcolor, _font
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from ..data._source import float_digits
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from ._label import Label
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from ._style import DpiAwareFont, hcolor, _font
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from ._interaction import ChartView
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_axis_pen = pg.mkPen(hcolor('bracket'))
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@ -42,7 +44,6 @@ class Axis(pg.AxisItem):
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self,
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linkedsplits,
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typical_max_str: str = '100 000.000',
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min_tick: int = 2,
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**kwargs
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) -> None:
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@ -52,7 +53,6 @@ class Axis(pg.AxisItem):
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# self.setCacheMode(QtWidgets.QGraphicsItem.DeviceCoordinateCache)
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self.linkedsplits = linkedsplits
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self._min_tick = min_tick
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self._dpi_font = _font
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self.setTickFont(_font.font)
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@ -74,7 +74,10 @@ class Axis(pg.AxisItem):
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})
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self.setTickFont(_font.font)
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# NOTE: this is for surrounding "border"
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self.setPen(_axis_pen)
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# this is the text color
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self.setTextPen(_axis_pen)
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self.typical_br = _font._qfm.boundingRect(typical_max_str)
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# size the pertinent axis dimension to a "typical value"
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@ -83,40 +86,102 @@ class Axis(pg.AxisItem):
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def size_to_values(self) -> None:
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pass
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def set_min_tick(self, size: int) -> None:
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self._min_tick = size
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def txt_offsets(self) -> Tuple[int, int]:
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return tuple(self.style['tickTextOffset'])
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class PriceAxis(Axis):
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def __init__(
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self,
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*args,
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min_tick: int = 2,
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title: str = '',
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formatter: Optional[Callable[[float], str]] = None,
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**kwargs
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) -> None:
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super().__init__(*args, **kwargs)
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self.formatter = formatter
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self._min_tick: int = min_tick
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self.title = None
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def set_title(
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self,
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title: str,
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view: Optional[ChartView] = None
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) -> Label:
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'''
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Set a sane UX label using our built-in ``Label``.
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'''
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# XXX: built-in labels but they're huge, and placed weird..
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# self.setLabel(title)
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# self.showLabel()
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label = self.title = Label(
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view=view or self.linkedView(),
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fmt_str=title,
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color='bracket',
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parent=self,
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# update_on_range_change=False,
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)
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def below_axis() -> QPointF:
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return QPointF(
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0,
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self.size().height(),
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)
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# XXX: doesn't work? have to pass it above
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# label.txt.setParent(self)
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label.scene_anchor = below_axis
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label.render()
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label.show()
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label.update()
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return label
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def set_min_tick(
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self,
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size: int
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) -> None:
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self._min_tick = size
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def size_to_values(self) -> None:
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# self.typical_br = _font._qfm.boundingRect(typical_max_str)
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self.setWidth(self.typical_br.width())
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# XXX: drop for now since it just eats up h space
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def tickStrings(
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self,
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vals,
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scale,
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spacing,
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):
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vals: tuple[float],
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scale: float,
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spacing: float,
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# TODO: figure out how to enforce min tick spacing by passing
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# it into the parent type
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digits = max(float_digits(spacing * scale), self._min_tick)
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) -> list[str]:
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# TODO: figure out how to enforce min tick spacing by passing it
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# into the parent type
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digits = max(
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float_digits(spacing * scale),
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self._min_tick,
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)
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if self.title:
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self.title.update()
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# print(f'vals: {vals}\nscale: {scale}\nspacing: {spacing}')
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# print(f'digits: {digits}')
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if not self.formatter:
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return [
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('{value:,.{digits}f}').format(
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digits=digits,
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value=v,
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).replace(',', ' ') for v in vals
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]
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else:
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return list(map(self.formatter, vals))
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class DynamicDateAxis(Axis):
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@ -136,6 +201,7 @@ class DynamicDateAxis(Axis):
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def _indexes_to_timestrs(
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self,
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indexes: List[int],
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) -> List[str]:
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chart = self.linkedsplits.chart
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@ -165,9 +231,10 @@ class DynamicDateAxis(Axis):
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def tickStrings(
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self,
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values: tuple[float],
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scale,
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spacing,
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):
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scale: float,
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spacing: float,
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) -> list[str]:
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# info = self.tickStrings.cache_info()
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# print(info)
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return self._indexes_to_timestrs(values)
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@ -220,6 +287,8 @@ class AxisLabel(pg.GraphicsObject):
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self.path = None
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self.rect = None
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self._pw = self.pixelWidth()
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def paint(
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self,
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p: QtGui.QPainter,
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@ -269,9 +338,10 @@ class AxisLabel(pg.GraphicsObject):
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def boundingRect(self): # noqa
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"""Size the graphics space from the text contents.
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'''
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Size the graphics space from the text contents.
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"""
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'''
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if self.label_str:
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self._size_br_from_str(self.label_str)
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@ -287,23 +357,32 @@ class AxisLabel(pg.GraphicsObject):
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return QtCore.QRectF()
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# return self.rect or QtCore.QRectF()
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# TODO: but the input probably needs to be the "len" of
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# the current text value:
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@lru_cache
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def _size_br_from_str(
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self,
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value: str
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def _size_br_from_str(self, value: str) -> None:
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"""Do our best to render the bounding rect to a set margin
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) -> tuple[float, float]:
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'''
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Do our best to render the bounding rect to a set margin
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around provided string contents.
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"""
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'''
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# size the filled rect to text and/or parent axis
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# if not self._txt_br:
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# # XXX: this can't be c
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# # XXX: this can't be called until stuff is rendered?
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# self._txt_br = self._dpifont.boundingRect(value)
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txt_br = self._txt_br = self._dpifont.boundingRect(value)
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txt_h, txt_w = txt_br.height(), txt_br.width()
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# print(f'wsw: {self._dpifont.boundingRect(" ")}')
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# allow subtypes to specify a static width and height
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h, w = self.size_hint()
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# print(f'axis size: {self._parent.size()}')
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# print(f'axis geo: {self._parent.geometry()}')
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self.rect = QtCore.QRectF(
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0, 0,
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@ -314,7 +393,7 @@ class AxisLabel(pg.GraphicsObject):
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# hb = self.path.controlPointRect()
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# hb_size = hb.size()
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return self.rect
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return (self.rect.width(), self.rect.height())
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# _common_text_flags = (
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# QtCore.Qt.TextDontClip |
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@ -342,6 +421,7 @@ class XAxisLabel(AxisLabel):
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abs_pos: QPointF, # scene coords
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value: float, # data for text
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offset: int = 0 # if have margins, k?
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) -> None:
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timestrs = self._parent._indexes_to_timestrs([int(value)])
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@ -356,17 +436,19 @@ class XAxisLabel(AxisLabel):
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w = self.boundingRect().width()
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self.setPos(QPointF(
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abs_pos.x() - w/2,
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self.setPos(
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QPointF(
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abs_pos.x() - w/2 - self._pw,
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y_offset/2,
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))
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)
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)
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self.update()
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def _draw_arrow_path(self):
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y_offset = self._parent.style['tickTextOffset'][1]
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path = QtGui.QPainterPath()
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h, w = self.rect.height(), self.rect.width()
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middle = w/2 - 0.5
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middle = w/2 - self._pw * 0.5
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aw = h/2
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left = middle - aw
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right = middle + aw
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@ -410,8 +492,12 @@ class YAxisLabel(AxisLabel):
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self.x_offset, y_offset = self._parent.txt_offsets()
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def size_hint(self) -> Tuple[float, float]:
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# size to parent axis width
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return None, self._parent.width()
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# size to parent axis width(-ish)
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wsh = self._dpifont.boundingRect(' ').height() / 2
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return (
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None,
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self._parent.size().width() - wsh,
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)
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def update_label(
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self,
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@ -432,16 +518,19 @@ class YAxisLabel(AxisLabel):
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br = self.boundingRect()
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h = br.height()
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self.setPos(QPointF(
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self.setPos(
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QPointF(
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x_offset,
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abs_pos.y() - h / 2 - self._y_margin / 2
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))
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abs_pos.y() - h / 2 - self._pw,
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)
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)
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self.update()
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def update_on_resize(self, vr, r):
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"""Tiis is a ``.sigRangeChanged()`` handler.
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'''
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This is a ``.sigRangeChanged()`` handler.
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"""
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'''
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index, last = self._last_datum
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if index is not None:
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self.update_from_data(index, last)
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@ -451,11 +540,13 @@ class YAxisLabel(AxisLabel):
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index: int,
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value: float,
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_save_last: bool = True,
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) -> None:
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"""Update the label's text contents **and** position from
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'''
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Update the label's text contents **and** position from
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a view box coordinate datum.
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"""
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'''
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if _save_last:
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self._last_datum = (index, value)
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@ -469,7 +560,7 @@ class YAxisLabel(AxisLabel):
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path = QtGui.QPainterPath()
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h = self.rect.height()
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path.moveTo(0, 0)
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path.lineTo(-x_offset - h/4, h/2.)
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path.lineTo(-x_offset - h/4, h/2. - self._pw/2)
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path.lineTo(0, h)
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path.closeSubpath()
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self.path = path
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|
|
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|
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@ -479,14 +479,20 @@ class LinkedSplits(QWidget):
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axisItems=axes,
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**cpw_kwargs,
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)
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cpw.hideAxis('left')
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cpw.hideAxis('bottom')
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if self.xaxis_chart:
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self.xaxis_chart.hideAxis('bottom')
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# presuming we only want it at the true bottom of all charts.
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# XXX: uses new api from our ``pyqtgraph`` fork.
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# https://github.com/pikers/pyqtgraph/tree/plotitemoverlay_onto_pg_master
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_ = self.xaxis_chart.removeAxis('bottom', unlink=False)
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assert 'bottom' not in self.xaxis_chart.plotItem.axes
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# _ = self.xaxis_chart.removeAxis('bottom', unlink=False)
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# assert 'bottom' not in self.xaxis_chart.plotItem.axes
|
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self.xaxis_chart = cpw
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cpw.showAxis('bottom')
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|
||||
if self.xaxis_chart is None:
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self.xaxis_chart = cpw
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|
|
@ -726,11 +732,6 @@ class ChartPlotWidget(pg.PlotWidget):
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self._static_yrange = static_yrange # for "known y-range style"
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self._view_mode: str = 'follow'
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# show only right side axes
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self.hideAxis('left')
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self.showAxis('right')
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# self.showAxis('left')
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||||
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||||
# show background grid
|
||||
self.showGrid(x=False, y=True, alpha=0.3)
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|
||||
|
|
@ -862,53 +863,58 @@ class ChartPlotWidget(pg.PlotWidget):
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|||
def overlay_plotitem(
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||||
self,
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||||
name: str,
|
||||
index: Optional[int] = None,
|
||||
axis_title: Optional[str] = None,
|
||||
axis_side: str = 'right',
|
||||
axis_kwargs: dict = {},
|
||||
|
||||
) -> pg.PlotItem:
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||||
|
||||
# Custom viewbox impl
|
||||
cv = self.mk_vb(name)
|
||||
cv.chart = self
|
||||
|
||||
# xaxis = DynamicDateAxis(
|
||||
# orientation='bottom',
|
||||
# linkedsplits=self.linked,
|
||||
# )
|
||||
allowed_sides = {'left', 'right'}
|
||||
if axis_side not in allowed_sides:
|
||||
raise ValueError(f'``axis_side``` must be in {allowed_sides}')
|
||||
yaxis = PriceAxis(
|
||||
orientation='right',
|
||||
orientation=axis_side,
|
||||
linkedsplits=self.linked,
|
||||
**axis_kwargs,
|
||||
)
|
||||
|
||||
plotitem = pg.PlotItem(
|
||||
pi = pg.PlotItem(
|
||||
parent=self.plotItem,
|
||||
name=name,
|
||||
enableMenu=False,
|
||||
viewBox=cv,
|
||||
axisItems={
|
||||
# 'bottom': xaxis,
|
||||
'right': yaxis,
|
||||
axis_side: yaxis,
|
||||
},
|
||||
default_axes=[],
|
||||
)
|
||||
# plotitem.setAxisItems(
|
||||
# add_to_layout=False,
|
||||
# axisItems={
|
||||
# 'bottom': xaxis,
|
||||
# 'right': yaxis,
|
||||
# },
|
||||
# )
|
||||
# plotite.hideAxis('right')
|
||||
# plotite.hideAxis('bottom')
|
||||
# plotitem.addItem(curve)
|
||||
pi.hideButtons()
|
||||
|
||||
cv.enable_auto_yrange()
|
||||
|
||||
# plotitem.enableAutoRange(axis='y')
|
||||
plotitem.hideButtons()
|
||||
|
||||
# compose this new plot's graphics with the current chart's
|
||||
# existing one but with separate axes as neede and specified.
|
||||
self.pi_overlay.add_plotitem(
|
||||
plotitem,
|
||||
pi,
|
||||
index=index,
|
||||
|
||||
# only link x-axes,
|
||||
link_axes=(0,),
|
||||
)
|
||||
return plotitem
|
||||
|
||||
# add axis title
|
||||
# TODO: do we want this API to still work?
|
||||
# raxis = pi.getAxis('right')
|
||||
axis = self.pi_overlay.get_axis(pi, axis_side)
|
||||
axis.set_title(axis_title or name, view=pi.getViewBox())
|
||||
|
||||
return pi
|
||||
|
||||
def draw_curve(
|
||||
self,
|
||||
|
|
@ -1014,7 +1020,8 @@ class ChartPlotWidget(pg.PlotWidget):
|
|||
# add y-axis "last" value label
|
||||
last = self._ysticks[name] = YAxisLabel(
|
||||
chart=self,
|
||||
parent=self.getAxis('right'),
|
||||
# parent=self.getAxis('right'),
|
||||
parent=self.pi_overlay.get_axis(self.plotItem, 'right'),
|
||||
# TODO: pass this from symbol data
|
||||
digits=digits,
|
||||
opacity=1,
|
||||
|
|
|
|||
|
|
@ -43,8 +43,8 @@ log = get_logger(__name__)
|
|||
# latency (in terms of perceived lag in cross hair) so really be sure
|
||||
# there's an improvement if you want to change it!
|
||||
|
||||
_mouse_rate_limit = 58 # TODO; should we calc current screen refresh rate?
|
||||
_debounce_delay = 1 / 60
|
||||
_mouse_rate_limit = 120 # TODO; should we calc current screen refresh rate?
|
||||
_debounce_delay = 1 / 40
|
||||
_ch_label_opac = 1
|
||||
|
||||
|
||||
|
|
@ -369,7 +369,13 @@ class Cursor(pg.GraphicsObject):
|
|||
self,
|
||||
plot: 'ChartPlotWidget', # noqa
|
||||
digits: int = 0,
|
||||
|
||||
) -> None:
|
||||
'''
|
||||
Add chart to tracked set such that a cross-hair and possibly
|
||||
curve tracking cursor can be drawn on the plot.
|
||||
|
||||
'''
|
||||
# add ``pg.graphicsItems.InfiniteLine``s
|
||||
# vertical and horizonal lines and a y-axis label
|
||||
|
||||
|
|
@ -382,7 +388,8 @@ class Cursor(pg.GraphicsObject):
|
|||
|
||||
yl = YAxisLabel(
|
||||
chart=plot,
|
||||
parent=plot.getAxis('right'),
|
||||
# parent=plot.getAxis('right'),
|
||||
parent=plot.pi_overlay.get_axis(plot.plotItem, 'right'),
|
||||
digits=digits or self.digits,
|
||||
opacity=_ch_label_opac,
|
||||
bg_color=self.label_color,
|
||||
|
|
@ -424,19 +431,25 @@ class Cursor(pg.GraphicsObject):
|
|||
|
||||
# ONLY create an x-axis label for the cursor
|
||||
# if this plot owns the 'bottom' axis.
|
||||
if 'bottom' in plot.plotItem.axes:
|
||||
self.xaxis_label = XAxisLabel(
|
||||
# if 'bottom' in plot.plotItem.axes:
|
||||
if plot.linked.xaxis_chart is plot:
|
||||
xlabel = self.xaxis_label = XAxisLabel(
|
||||
parent=self.plots[plot_index].getAxis('bottom'),
|
||||
# parent=self.plots[plot_index].pi_overlay.get_axis(plot.plotItem, 'bottom'),
|
||||
opacity=_ch_label_opac,
|
||||
bg_color=self.label_color,
|
||||
)
|
||||
# place label off-screen during startup
|
||||
self.xaxis_label.setPos(self.plots[0].mapFromView(QPointF(0, 0)))
|
||||
xlabel.setPos(
|
||||
self.plots[0].mapFromView(QPointF(0, 0))
|
||||
)
|
||||
xlabel.show()
|
||||
|
||||
def add_curve_cursor(
|
||||
self,
|
||||
plot: 'ChartPlotWidget', # noqa
|
||||
curve: 'PlotCurveItem', # noqa
|
||||
|
||||
) -> LineDot:
|
||||
# if this plot contains curves add line dot "cursors" to denote
|
||||
# the current sample under the mouse
|
||||
|
|
@ -493,24 +506,27 @@ class Cursor(pg.GraphicsObject):
|
|||
|
||||
ix = round(x) # since bars are centered around index
|
||||
|
||||
# px perfect...
|
||||
line_offset = self._lw / 2
|
||||
|
||||
# round y value to nearest tick step
|
||||
m = self._y_incr_mult
|
||||
iy = round(y * m) / m
|
||||
|
||||
# px perfect...
|
||||
line_offset = self._lw / 2
|
||||
vl_y = iy - line_offset
|
||||
|
||||
# update y-range items
|
||||
if iy != last_iy:
|
||||
|
||||
if self._y_label_update:
|
||||
self.graphics[self.active_plot]['yl'].update_label(
|
||||
abs_pos=plot.mapFromView(QPointF(ix, iy)),
|
||||
# abs_pos=plot.mapFromView(QPointF(ix, iy)),
|
||||
abs_pos=plot.mapFromView(QPointF(ix, vl_y)),
|
||||
value=iy
|
||||
)
|
||||
|
||||
# only update horizontal xhair line if label is enabled
|
||||
self.graphics[plot]['hl'].setY(iy)
|
||||
# self.graphics[plot]['hl'].setY(iy)
|
||||
self.graphics[plot]['hl'].setY(vl_y)
|
||||
|
||||
# update all trackers
|
||||
for item in self._trackers:
|
||||
|
|
@ -541,9 +557,6 @@ class Cursor(pg.GraphicsObject):
|
|||
# left axis offset width for calcuating
|
||||
# absolute x-axis label placement.
|
||||
left_axis_width = 0
|
||||
|
||||
if 'bottom' in axes:
|
||||
|
||||
left = axes.get('left')
|
||||
if left:
|
||||
left_axis_width = left['item'].width()
|
||||
|
|
|
|||
|
|
@ -115,13 +115,14 @@ async def update_linked_charts_graphics(
|
|||
vlm_chart: Optional[ChartPlotWidget] = None,
|
||||
|
||||
) -> None:
|
||||
'''The 'main' (price) chart real-time update loop.
|
||||
'''
|
||||
The 'main' (price) chart real-time update loop.
|
||||
|
||||
Receive from the primary instrument quote stream and update the OHLC
|
||||
chart.
|
||||
|
||||
'''
|
||||
# TODO: bunch of stuff:
|
||||
# TODO: bunch of stuff (some might be done already, can't member):
|
||||
# - I'm starting to think all this logic should be
|
||||
# done in one place and "graphics update routines"
|
||||
# should not be doing any length checking and array diffing.
|
||||
|
|
@ -181,13 +182,34 @@ async def update_linked_charts_graphics(
|
|||
view = chart.view
|
||||
last_quote = time.time()
|
||||
|
||||
# async def iter_drain_quotes():
|
||||
# # NOTE: all code below this loop is expected to be synchronous
|
||||
# # and thus draw instructions are not picked up jntil the next
|
||||
# # wait / iteration.
|
||||
# async for quotes in stream:
|
||||
# while True:
|
||||
# try:
|
||||
# moar = stream.receive_nowait()
|
||||
# except trio.WouldBlock:
|
||||
# yield quotes
|
||||
# break
|
||||
# else:
|
||||
# for sym, quote in moar.items():
|
||||
# ticks_frame = quote.get('ticks')
|
||||
# if ticks_frame:
|
||||
# quotes[sym].setdefault(
|
||||
# 'ticks', []).extend(ticks_frame)
|
||||
# print('pulled extra')
|
||||
|
||||
# yield quotes
|
||||
|
||||
# async for quotes in iter_drain_quotes():
|
||||
|
||||
async for quotes in stream:
|
||||
|
||||
now = time.time()
|
||||
quote_period = time.time() - last_quote
|
||||
quote_rate = round(
|
||||
1/quote_period, 1) if quote_period > 0 else float('inf')
|
||||
|
||||
if (
|
||||
quote_period <= 1/_quote_throttle_rate
|
||||
|
||||
|
|
@ -196,7 +218,8 @@ async def update_linked_charts_graphics(
|
|||
and quote_rate >= _quote_throttle_rate * 1.5
|
||||
):
|
||||
log.warning(f'High quote rate {symbol.key}: {quote_rate}')
|
||||
last_quote = now
|
||||
|
||||
last_quote = time.time()
|
||||
|
||||
# chart isn't active/shown so skip render cycle and pause feed(s)
|
||||
if chart.linked.isHidden():
|
||||
|
|
@ -621,9 +644,15 @@ async def display_symbol_data(
|
|||
await trio.sleep(0)
|
||||
linkedsplits.resize_sidepanes()
|
||||
|
||||
# NOTE: we pop the volume chart from the subplots set so
|
||||
# that it isn't double rendered in the display loop
|
||||
# above since we do a maxmin calc on the volume data to
|
||||
# determine if auto-range adjustements should be made.
|
||||
linkedsplits.subplots.pop('volume', None)
|
||||
|
||||
# TODO: make this not so shit XD
|
||||
# close group status
|
||||
sbar._status_groups[loading_sym_key][1]()
|
||||
|
||||
# let the app run.
|
||||
# let the app run.. bby
|
||||
await trio.sleep_forever()
|
||||
|
|
|
|||
|
|
@ -33,7 +33,9 @@ import pyqtgraph as pg
|
|||
import trio
|
||||
from trio_typing import TaskStatus
|
||||
|
||||
from ._axes import PriceAxis
|
||||
from .._cacheables import maybe_open_context
|
||||
from ..calc import humanize
|
||||
from ..data._sharedmem import (
|
||||
ShmArray,
|
||||
maybe_open_shm_array,
|
||||
|
|
@ -653,7 +655,7 @@ async def open_vlm_displays(
|
|||
|
||||
last_val_sticky.update_from_data(-1, value)
|
||||
|
||||
chart.update_curve_from_array(
|
||||
vlm_curve = chart.update_curve_from_array(
|
||||
'volume',
|
||||
shm.array,
|
||||
)
|
||||
|
|
@ -661,8 +663,11 @@ async def open_vlm_displays(
|
|||
# size view to data once at outset
|
||||
chart.view._set_yrange()
|
||||
|
||||
if not dvlm:
|
||||
return
|
||||
# add axis title
|
||||
axis = chart.getAxis('right')
|
||||
axis.set_title(' vlm')
|
||||
|
||||
if dvlm:
|
||||
|
||||
# spawn and overlay $ vlm on the same subchart
|
||||
shm, started = await admin.start_engine_task(
|
||||
|
|
@ -685,7 +690,19 @@ async def open_vlm_displays(
|
|||
|
||||
pi = chart.overlay_plotitem(
|
||||
'dolla_vlm',
|
||||
index=0, # place axis on inside (nearest to chart)
|
||||
axis_title=' $vlm',
|
||||
axis_side='right',
|
||||
axis_kwargs={
|
||||
'typical_max_str': ' 100.0 M ',
|
||||
'formatter': partial(
|
||||
humanize,
|
||||
digits=2,
|
||||
),
|
||||
},
|
||||
|
||||
)
|
||||
|
||||
# add custom auto range handler
|
||||
pi.vb._maxmin = partial(maxmin, name='dolla_vlm')
|
||||
|
||||
|
|
@ -696,13 +713,18 @@ async def open_vlm_displays(
|
|||
|
||||
array_key='dolla_vlm',
|
||||
overlay=pi,
|
||||
color='charcoal',
|
||||
# color='bracket',
|
||||
# TODO: this color or dark volume
|
||||
# color='charcoal',
|
||||
step_mode=True,
|
||||
# **conf.get('chart_kwargs', {})
|
||||
)
|
||||
# TODO: is there a way to "sync" the dual axes such that only
|
||||
# one curve is needed?
|
||||
# curve.hide()
|
||||
# hide the original vlm curve since the $vlm one is now
|
||||
# displayed and the curves are effectively the same minus
|
||||
# liquidity events (well at least on low OHLC periods - 1s).
|
||||
vlm_curve.hide()
|
||||
|
||||
# TODO: we need a better API to do this..
|
||||
# specially store ref to shm for lookup in display loop
|
||||
|
|
@ -710,7 +732,8 @@ async def open_vlm_displays(
|
|||
# ``.draw_curve()``.
|
||||
chart._overlays['dolla_vlm'] = shm
|
||||
|
||||
# XXX: old dict-style config before it was moved into the helper task
|
||||
# XXX: old dict-style config before it was moved into the
|
||||
# helper task
|
||||
# 'dolla_vlm': {
|
||||
# 'func_name': 'dolla_vlm',
|
||||
# 'zero_on_step': True,
|
||||
|
|
@ -729,6 +752,12 @@ async def open_vlm_displays(
|
|||
|
||||
# }
|
||||
|
||||
for name, axis_info in pi.axes.items():
|
||||
# lol this sux XD
|
||||
axis = axis_info['item']
|
||||
if isinstance(axis, PriceAxis):
|
||||
axis.size_to_values()
|
||||
|
||||
# built-in vlm fsps
|
||||
for display_name, conf in {
|
||||
'vwap': {
|
||||
|
|
|
|||
|
|
@ -34,7 +34,7 @@ from ._style import (
|
|||
|
||||
|
||||
class Label:
|
||||
"""
|
||||
'''
|
||||
A plain ol' "scene label" using an underlying ``QGraphicsTextItem``.
|
||||
|
||||
After hacking for many days on multiple "label" systems inside
|
||||
|
|
@ -50,10 +50,8 @@ class Label:
|
|||
small, re-usable label components that can actually be used to build
|
||||
production grade UIs...
|
||||
|
||||
"""
|
||||
|
||||
'''
|
||||
def __init__(
|
||||
|
||||
self,
|
||||
view: pg.ViewBox,
|
||||
fmt_str: str,
|
||||
|
|
@ -63,6 +61,7 @@ class Label:
|
|||
font_size: str = 'small',
|
||||
opacity: float = 1,
|
||||
fields: dict = {},
|
||||
parent: pg.GraphicsObject = None,
|
||||
update_on_range_change: bool = True,
|
||||
|
||||
) -> None:
|
||||
|
|
@ -71,11 +70,13 @@ class Label:
|
|||
self._fmt_str = fmt_str
|
||||
self._view_xy = QPointF(0, 0)
|
||||
|
||||
self.scene_anchor: Optional[Callable[..., QPointF]] = None
|
||||
self.scene_anchor: Optional[
|
||||
Callable[..., QPointF]
|
||||
] = None
|
||||
|
||||
self._x_offset = x_offset
|
||||
|
||||
txt = self.txt = QtWidgets.QGraphicsTextItem()
|
||||
txt = self.txt = QtWidgets.QGraphicsTextItem(parent=parent)
|
||||
txt.setCacheMode(QtWidgets.QGraphicsItem.DeviceCoordinateCache)
|
||||
|
||||
vb.scene().addItem(txt)
|
||||
|
|
@ -86,7 +87,6 @@ class Label:
|
|||
)
|
||||
dpi_font.configure_to_dpi()
|
||||
txt.setFont(dpi_font.font)
|
||||
|
||||
txt.setOpacity(opacity)
|
||||
|
||||
# register viewbox callbacks
|
||||
|
|
@ -109,7 +109,7 @@ class Label:
|
|||
# self.setTextInteractionFlags(QtGui.Qt.TextEditorInteraction)
|
||||
|
||||
@property
|
||||
def color(self):
|
||||
def color(self) -> str:
|
||||
return self._hcolor
|
||||
|
||||
@color.setter
|
||||
|
|
@ -118,9 +118,10 @@ class Label:
|
|||
self._hcolor = color
|
||||
|
||||
def update(self) -> None:
|
||||
'''Update this label either by invoking its
|
||||
user defined anchoring function, or by positioning
|
||||
to the last recorded data view coordinates.
|
||||
'''
|
||||
Update this label either by invoking its user defined anchoring
|
||||
function, or by positioning to the last recorded data view
|
||||
coordinates.
|
||||
|
||||
'''
|
||||
# move label in scene coords to desired position
|
||||
|
|
@ -234,7 +235,8 @@ class Label:
|
|||
|
||||
|
||||
class FormatLabel(QLabel):
|
||||
'''Kinda similar to above but using the widget apis.
|
||||
'''
|
||||
Kinda similar to above but using the widget apis.
|
||||
|
||||
'''
|
||||
def __init__(
|
||||
|
|
@ -273,8 +275,8 @@ class FormatLabel(QLabel):
|
|||
QSizePolicy.Expanding,
|
||||
QSizePolicy.Expanding,
|
||||
)
|
||||
self.setAlignment(Qt.AlignVCenter
|
||||
| Qt.AlignLeft
|
||||
self.setAlignment(
|
||||
Qt.AlignVCenter | Qt.AlignLeft
|
||||
)
|
||||
self.setText(self.fmt_str)
|
||||
|
||||
|
|
|
|||
|
|
@ -334,10 +334,11 @@ class LevelLine(pg.InfiniteLine):
|
|||
w: QtWidgets.QWidget
|
||||
|
||||
) -> None:
|
||||
"""Core paint which we override (yet again)
|
||||
'''
|
||||
Core paint which we override (yet again)
|
||||
from pg..
|
||||
|
||||
"""
|
||||
'''
|
||||
p.setRenderHint(p.Antialiasing)
|
||||
|
||||
# these are in viewbox coords
|
||||
|
|
|
|||
Loading…
Reference in New Issue