Move cache-reset ctx mngr to parent type: `FlowGraphics.reset_cache()`

piker/ui/_curve.py

@@ -163,6 +163,16 @@ class FlowGraphic(pg.GraphicsObject):
 
         return None
 
+    @cm
+    def reset_cache(self) -> None:
+        self.setCacheMode(QtWidgets.QGraphicsItem.NoCache)
+        try:
+            log.debug(f'{self._name} -> CACHE DISABLE')
+            yield
+        finally:
+            log.debug(f'{self._name} -> CACHE ENABLE')
+            self.setCacheMode(self.cache_mode)
+
 
 class Curve(FlowGraphic):
     '''
@@ -251,12 +261,6 @@ class Curve(FlowGraphic):
                 self.fast_path.clear()
                 # self.fast_path = None
 
-    @cm
-    def reset_cache(self) -> None:
-        self.setCacheMode(QtWidgets.QGraphicsItem.NoCache)
-        yield
-        self.setCacheMode(QGraphicsItem.DeviceCoordinateCache)
-
     def boundingRect(self):
         '''
         Compute and then cache our rect.

piker/ui/_ohlc.py

@@ -93,7 +93,7 @@ class BarItems(FlowGraphic):
     '''
     # XXX: causes this weird jitter bug when click-drag panning
     # where the path curve will awkwardly flicker back and forth?
-    cache_mode: int = QGraphicsItem.NoCache
+    # cache_mode: int = QGraphicsItem.NoCache
 
     def __init__(
         self,