From b6166513c6a5b972a6bdf50356c5d0e6157a5a6c Mon Sep 17 00:00:00 2001
From: Tyler Goodlet <jgbt@protonmail.com>
Date: Fri, 1 Apr 2022 13:49:42 -0400
Subject: [PATCH] Index must be int bro..

---
 piker/ui/_cursor.py | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/piker/ui/_cursor.py b/piker/ui/_cursor.py
index e006858e..ad3ddc98 100644
--- a/piker/ui/_cursor.py
+++ b/piker/ui/_cursor.py
@@ -95,22 +95,24 @@ class LineDot(pg.CurvePoint):
 
     def event(
         self,
-
         ev: QtCore.QEvent,
 
-    ) -> None:
+    ) -> bool:
         if not isinstance(
             ev, QtCore.QDynamicPropertyChangeEvent
         ) or self.curve() is None:
             return False
 
+        # TODO: get rid of this ``.getData()`` and
+        # make a more pythonic api to retreive backing
+        # numpy arrays...
         (x, y) = self.curve().getData()
         index = self.property('index')
         # first = self._plot._arrays['ohlc'][0]['index']
         # first = x[0]
         # i = index - first
         if index:
-            i = index - x[0]
+            i = round(index - x[0])
             if i > 0 and i < len(y):
                 newPos = (index, y[i])
                 QtWidgets.QGraphicsItem.setPos(self, *newPos)
@@ -405,6 +407,7 @@ class Cursor(pg.GraphicsObject):
             slot=self.mouseMoved,
             delay=_debounce_delay,
         )
+
         px_enter = pg.SignalProxy(
             plot.sig_mouse_enter,
             rateLimit=_mouse_rate_limit,