Use one marker, drop old anchors, add graphics update on marker paint
Tyler Goodlet
parent
4d5afc2e25
commit
c4a9d53306
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@ -24,14 +24,13 @@ from math import floor
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from pyqtgraph import functions as fn
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from pydantic import BaseModel
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from PyQt5.QtCore import QPointF
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from PyQt5.QtGui import QGraphicsPathItem
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# from PyQt5.QtCore import QPointF
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# from PyQt5.QtGui import QGraphicsPathItem
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from ._annotate import LevelMarker
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from ._anchors import (
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# marker_right_points,
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pp_tight_and_right, # wanna keep it straight in the long run
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gpath_pin,
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# keep_marker_in_view,
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)
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from ..clearing._messages import BrokerdPosition, Status
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from ..data._source import Symbol
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@ -90,10 +89,6 @@ class PositionTracker:
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view = chart.getViewBox()
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# create placeholder 'up' level arrow
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self._level_marker = None
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self._level_marker = self.level_marker(size=1)
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# literally 'pp' label that's always in view
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self.pp_label = pp_label = Label(
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view=view,
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@ -102,7 +97,9 @@ class PositionTracker:
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update_on_range_change=False,
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)
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self._level_marker.label = pp_label
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# create placeholder 'up' level arrow
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self._level_marker = None
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self._level_marker = self.level_marker(size=1)
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pp_label.scene_anchor = partial(
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gpath_pin,
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@ -110,7 +107,6 @@ class PositionTracker:
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label=pp_label,
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)
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pp_label.render()
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pp_label.show()
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self.size_label = size_label = Label(
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view=view,
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@ -119,7 +115,7 @@ class PositionTracker:
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# this is "static" label
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# update_on_range_change=False,
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fmt_str='\n'.join((
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'x{entry_size}',
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':{entry_size:.0f}',
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)),
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fields={
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@ -127,12 +123,20 @@ class PositionTracker:
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},
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)
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size_label.render()
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# size_label.scene_anchor = self.align_to_marker
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size_label.scene_anchor = lambda: (
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self.pp_label.txt.pos() + QPointF(self.pp_label.w, 0)
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size_label.scene_anchor = partial(
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pp_tight_and_right,
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label=self.pp_label,
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)
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size_label.hide()
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# size_label.scene_anchor = self.align_to_marker
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# size_label.scene_anchor = lambda: (
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# self.pp_label.txt.pos() + QPointF(self.pp_label.w, 0)
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# )
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# size_label.scene_anchor = lambda: (
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# self.pp_label.scene_br().bottomRight() - QPointF(
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# self.size_label.w, self.size_label.h/3)
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# )
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# TODO: if we want to show more position-y info?
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# fmt_str='\n'.join((
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@ -150,6 +154,20 @@ class PositionTracker:
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# },
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# )
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def update_graphics(
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self,
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marker: LevelMarker
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) -> None:
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'''Update all labels.
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Meant to be called from the maker ``.paint()``
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for immediate, lag free label draws.
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'''
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self.pp_label.update()
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self.size_label.update()
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def update(
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self,
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msg: BrokerdPosition,
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@ -174,11 +192,17 @@ class PositionTracker:
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else:
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self._level_marker.level = avg_price
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# these updates are critical to avoid lag on view/scene changes
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self._level_marker.update() # trigger paint
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self.pp_label.update()
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self.size_label.update()
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self.show()
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# self.pp_label.show()
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# self._level_marker.show()
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# don't show side and status widgets unless
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# order mode is "engaged" (which done via input controls)
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self.hide_info()
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def level(self) -> float:
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if self.line:
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@ -201,17 +225,18 @@ class PositionTracker:
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self.line.hide()
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def hide_info(self) -> None:
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'''Hide details of position.
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'''Hide details (right now just size label?) of position.
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'''
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# TODO: add remove status bar widgets here
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self.size_label.hide()
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# TODO: move into annoate module
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def level_marker(
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self,
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size: float,
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) -> QGraphicsPathItem:
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) -> LevelMarker:
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if self._level_marker:
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self._level_marker.delete()
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@ -234,19 +259,12 @@ class PositionTracker:
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style=style,
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get_level=self.level,
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size=arrow_size,
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on_paint=self.update_graphics,
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)
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self.chart.getViewBox().scene().addItem(arrow)
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arrow.show()
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# arrow.label = self.pp_label
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# inside ``LevelLine.pain()`` this is updates...
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# we need a better way to have the label updated as frequenty
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# as every paint call? Maybe use a better slot then the range
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# change?
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# self._level_marker.label = self.pp_label
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return arrow
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def position_line(
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@ -298,50 +316,51 @@ class PositionTracker:
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return line
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# TODO: we can drop this right?
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# order line endpoint anchor
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def align_to_marker(self) -> QPointF:
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# def align_to_marker(self) -> QPointF:
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pp_line = self.line
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if pp_line:
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# pp_line = self.line
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# if pp_line:
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# line_ep = pp_line.scene_endpoint()
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# print(line_ep)
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# # line_ep = pp_line.scene_endpoint()
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# # print(line_ep)
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# y_level_scene = line_ep.y()
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# pp_y = pp_label.txt.pos().y()
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# # y_level_scene = line_ep.y()
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# # pp_y = pp_label.txt.pos().y()
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# if y_level_scene > pp_y:
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# y_level_scene = pp_y
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# # if y_level_scene > pp_y:
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# # y_level_scene = pp_y
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# elif y_level_scene
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mkr_pos = self._level_marker.pos()
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# # elif y_level_scene
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# mkr_pos = self._level_marker.pos()
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left_of_mkr = QPointF(
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# line_ep.x() - self.size_label.w,
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mkr_pos.x() - self.size_label.w,
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mkr_pos.y(),
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# self._level_marker
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# max(0, y_level_scene),
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# min(
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# pp_label.txt.pos().y()
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# ),
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)
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return left_of_mkr
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# return QPointF(
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# marker_right_points(chart)[2] - pp_label.w ,
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# view.height() - pp_label.h,
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# # br.x() - pp_label.w,
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# # br.y(),
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# left_of_mkr = QPointF(
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# # line_ep.x() - self.size_label.w,
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# mkr_pos.x() - self.size_label.w,
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# mkr_pos.y(),
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# # self._level_marker
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# # max(0, y_level_scene),
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# # min(
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# # pp_label.txt.pos().y()
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# # ),
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# )
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# return left_of_mkr
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else:
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# pp = _lines._pp_label.txt
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# scene_rect = pp.mapToScene(pp.boundingRect()).boundingRect()
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# br = scene_rect.bottomRight()
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# # return QPointF(
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return QPointF(0, 0)
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# # marker_right_points(chart)[2] - pp_label.w ,
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# # view.height() - pp_label.h,
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# # # br.x() - pp_label.w,
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# # # br.y(),
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# # )
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# else:
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# # pp = _lines._pp_label.txt
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# # scene_rect = pp.mapToScene(pp.boundingRect()).boundingRect()
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# # br = scene_rect.bottomRight()
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# return QPointF(0, 0)
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def update_line(
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self,
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