Fixed cache delay when moving the Tracker Transform Handler

Author: BrennoCaldato

src/windows/video_widget.py

@@ -1001,15 +1001,13 @@ def updateEffectProperty(self, effect_id, frame_number, property_key, new_value,
         found_point = False
         effect_updated = False
 
-        raw_properties = json.loads(self.transforming_effect_object.Json())
-
         c = Effect.get(id=effect_id)
 
         if not c:
             # No clip found
             return
 
-        for point in raw_properties[property_key]["Points"]:
+        for point in c.data[property_key]["Points"]:
             log.info("looping points: co.X = %s" % point["co"]["X"])
 
             if point["co"]["X"] == frame_number:
@@ -1021,18 +1019,17 @@ def updateEffectProperty(self, effect_id, frame_number, property_key, new_value,
         if not found_point and new_value != None:
             effect_updated = True
             log.info("Created new point at X=%s" % frame_number)
-            raw_properties[property_key]["Points"].append({'co': {'X': frame_number, 'Y': new_value}, 'interpolation': openshot.BEZIER})
+            c.data[property_key]["Points"].append({'co': {'X': frame_number, 'Y': new_value}, 'interpolation': openshot.BEZIER})
 
-        raw_properties_string = json.dumps(raw_properties)
+        # Reduce # of clip properties we are saving (performance boost)
+        c.data = {property_key: c.data.get(property_key)}
 
         if effect_updated:
             c.save()
             # Update the preview
             if refresh:
                 get_app().window.refreshFrameSignal.emit()
 
-        self.transforming_effect_object.SetJson(raw_properties_string)
-
     def refreshTriggered(self):
         """Signal to refresh viewport (i.e. a property might have changed that effects the preview)"""