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Use one marker, drop old anchors, add graphics update on marker paint

fsp_feeds
Tyler Goodlet 2021-07-23 14:19:22 -04:00
parent 4d5afc2e25
commit c4a9d53306
1 changed files with 79 additions and 60 deletions
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139
piker/ui/_position.py
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@ -24,14 +24,13 @@ from math import floor
from pyqtgraph import functions as fn from pyqtgraph import functions as fn
from pydantic import BaseModel from pydantic import BaseModel
from PyQt5.QtCore import QPointF # from PyQt5.QtCore import QPointF
from PyQt5.QtGui import QGraphicsPathItem # from PyQt5.QtGui import QGraphicsPathItem
from ._annotate import LevelMarker from ._annotate import LevelMarker
from ._anchors import ( from ._anchors import (
# marker_right_points, pp_tight_and_right, # wanna keep it straight in the long run
gpath_pin, gpath_pin,
# keep_marker_in_view,
) )
from ..clearing._messages import BrokerdPosition, Status from ..clearing._messages import BrokerdPosition, Status
from ..data._source import Symbol from ..data._source import Symbol
@ -90,10 +89,6 @@ class PositionTracker:
view = chart.getViewBox() view = chart.getViewBox()
# create placeholder 'up' level arrow
self._level_marker = None
self._level_marker = self.level_marker(size=1)
# literally 'pp' label that's always in view # literally 'pp' label that's always in view
self.pp_label = pp_label = Label( self.pp_label = pp_label = Label(
view=view, view=view,
@ -102,7 +97,9 @@ class PositionTracker:
update_on_range_change=False, update_on_range_change=False,
) )
self._level_marker.label = pp_label # create placeholder 'up' level arrow
self._level_marker = None
self._level_marker = self.level_marker(size=1)
pp_label.scene_anchor = partial( pp_label.scene_anchor = partial(
gpath_pin, gpath_pin,
@ -110,7 +107,6 @@ class PositionTracker:
label=pp_label, label=pp_label,
) )
pp_label.render() pp_label.render()
pp_label.show()
self.size_label = size_label = Label( self.size_label = size_label = Label(
view=view, view=view,
@ -119,7 +115,7 @@ class PositionTracker:
# this is "static" label # this is "static" label
# update_on_range_change=False, # update_on_range_change=False,
fmt_str='\n'.join(( fmt_str='\n'.join((
'x{entry_size}', ':{entry_size:.0f}',
)), )),
fields={ fields={
@ -127,12 +123,20 @@ class PositionTracker:
}, },
) )
size_label.render() size_label.render()
# size_label.scene_anchor = self.align_to_marker
size_label.scene_anchor = lambda: ( size_label.scene_anchor = partial(
self.pp_label.txt.pos() + QPointF(self.pp_label.w, 0) pp_tight_and_right,
label=self.pp_label,
) )
size_label.hide()
# size_label.scene_anchor = self.align_to_marker
# size_label.scene_anchor = lambda: (
# self.pp_label.txt.pos() + QPointF(self.pp_label.w, 0)
# )
# size_label.scene_anchor = lambda: (
# self.pp_label.scene_br().bottomRight() - QPointF(
# self.size_label.w, self.size_label.h/3)
# )
# TODO: if we want to show more position-y info? # TODO: if we want to show more position-y info?
# fmt_str='\n'.join(( # fmt_str='\n'.join((
@ -150,6 +154,20 @@ class PositionTracker:
# }, # },
# ) # )
def update_graphics(
self,
marker: LevelMarker
) -> None:
'''Update all labels.
Meant to be called from the maker ``.paint()``
for immediate, lag free label draws.
'''
self.pp_label.update()
self.size_label.update()
def update( def update(
self, self,
msg: BrokerdPosition, msg: BrokerdPosition,
@ -174,11 +192,17 @@ class PositionTracker:
else: else:
self._level_marker.level = avg_price self._level_marker.level = avg_price
# these updates are critical to avoid lag on view/scene changes
self._level_marker.update() # trigger paint self._level_marker.update() # trigger paint
self.pp_label.update()
self.size_label.update()
self.show() self.show()
# self.pp_label.show() # don't show side and status widgets unless
# self._level_marker.show() # order mode is "engaged" (which done via input controls)
self.hide_info()
def level(self) -> float: def level(self) -> float:
if self.line: if self.line:
@ -201,17 +225,18 @@ class PositionTracker:
self.line.hide() self.line.hide()
def hide_info(self) -> None: def hide_info(self) -> None:
'''Hide details of position. '''Hide details (right now just size label?) of position.
''' '''
# TODO: add remove status bar widgets here # TODO: add remove status bar widgets here
self.size_label.hide() self.size_label.hide()
# TODO: move into annoate module
def level_marker( def level_marker(
self, self,
size: float, size: float,
) -> QGraphicsPathItem: ) -> LevelMarker:
if self._level_marker: if self._level_marker:
self._level_marker.delete() self._level_marker.delete()
@ -234,19 +259,12 @@ class PositionTracker:
style=style, style=style,
get_level=self.level, get_level=self.level,
size=arrow_size, size=arrow_size,
on_paint=self.update_graphics,
) )
self.chart.getViewBox().scene().addItem(arrow) self.chart.getViewBox().scene().addItem(arrow)
arrow.show() arrow.show()
# arrow.label = self.pp_label
# inside ``LevelLine.pain()`` this is updates...
# we need a better way to have the label updated as frequenty
# as every paint call? Maybe use a better slot then the range
# change?
# self._level_marker.label = self.pp_label
return arrow return arrow
def position_line( def position_line(
@ -298,50 +316,51 @@ class PositionTracker:
return line return line
# TODO: we can drop this right?
# order line endpoint anchor # order line endpoint anchor
def align_to_marker(self) -> QPointF: # def align_to_marker(self) -> QPointF:
pp_line = self.line # pp_line = self.line
if pp_line: # if pp_line:
# line_ep = pp_line.scene_endpoint() # # line_ep = pp_line.scene_endpoint()
# print(line_ep) # # print(line_ep)
# y_level_scene = line_ep.y() # # y_level_scene = line_ep.y()
# pp_y = pp_label.txt.pos().y() # # pp_y = pp_label.txt.pos().y()
# if y_level_scene > pp_y: # # if y_level_scene > pp_y:
# y_level_scene = pp_y # # y_level_scene = pp_y
# elif y_level_scene # # elif y_level_scene
mkr_pos = self._level_marker.pos() # mkr_pos = self._level_marker.pos()
left_of_mkr = QPointF( # left_of_mkr = QPointF(
# line_ep.x() - self.size_label.w, # # line_ep.x() - self.size_label.w,
mkr_pos.x() - self.size_label.w, # mkr_pos.x() - self.size_label.w,
mkr_pos.y(), # mkr_pos.y(),
# self._level_marker # # self._level_marker
# max(0, y_level_scene), # # max(0, y_level_scene),
# min( # # min(
# pp_label.txt.pos().y() # # pp_label.txt.pos().y()
# ), # # ),
) # )
return left_of_mkr # return left_of_mkr
# return QPointF( # # return QPointF(
# marker_right_points(chart)[2] - pp_label.w , # # marker_right_points(chart)[2] - pp_label.w ,
# view.height() - pp_label.h, # # view.height() - pp_label.h,
# # br.x() - pp_label.w, # # # br.x() - pp_label.w,
# # br.y(), # # # br.y(),
# ) # # )
else: # else:
# pp = _lines._pp_label.txt # # pp = _lines._pp_label.txt
# scene_rect = pp.mapToScene(pp.boundingRect()).boundingRect() # # scene_rect = pp.mapToScene(pp.boundingRect()).boundingRect()
# br = scene_rect.bottomRight() # # br = scene_rect.bottomRight()
return QPointF(0, 0) # return QPointF(0, 0)
def update_line( def update_line(
self, self,