Update max l1 label size on chart

piker/ui/_graphics/_curve.py

@@ -1,5 +1,5 @@
 # piker: trading gear for hackers
-# Copyright (C) 2018-present  Tyler Goodlet (in stewardship of piker0)
+# Copyright (C) Tyler Goodlet (in stewardship for piker0)
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
@@ -16,6 +16,7 @@
 
 """
 Fast, smooth, sexy curves.
+
 """
 from typing import Tuple
 

piker/ui/_interaction.py

@@ -121,7 +121,7 @@ class SelectRect(QtGui.QGraphicsRectItem):
         p1: QtCore.QPointF,
         p2: QtCore.QPointF
     ) -> None:
-        """Set position of selection rectagle and accompanying label, move
+        """Set position of selection rect and accompanying label, move
         label to match.
 
         """

piker/ui/_l1.py

@@ -152,7 +152,7 @@ class LevelLabel(YAxisLabel):
         h, w = self.set_label_str(fields)
 
         if self._adjust_to_l1:
-            self._x_offset = _max_l1_line_len
+            self._x_offset = self._chart._max_l1_line_len
 
         self.setPos(QPointF(
             self._h_shift * (w + self._x_offset),
@@ -211,11 +211,6 @@ class LevelLabel(YAxisLabel):
         self.update()
 
 
-# global for now but probably should be
-# attached to chart instance?
-_max_l1_line_len: float = 0
-
-
 class L1Label(LevelLabel):
 
     text_flags = (
@@ -232,10 +227,14 @@ class L1Label(LevelLabel):
         """
         h, w = super().set_label_str(fields)
 
-        # Set a global "max L1 label length" so we can look it up
-        # on order lines and adjust their labels not to overlap with it.
-        global _max_l1_line_len
-        _max_l1_line_len = max(_max_l1_line_len, w)
+        # Set a global "max L1 label length" so we can
+        # look it up on order lines and adjust their
+        # labels not to overlap with it.
+        chart = self._chart
+        chart._max_l1_line_len: float = max(
+            chart._max_l1_line_len,
+            w
+        )
 
         return h, w