Multiple users have told me that they were confused about where their current mouse position was when using a Segment Editor effect that has cursor artwork, specifically the “Draw” effect.
They problem is that they thought the tip of the Pencil in the icon effect was where drawing was going to start rather than at the tip of the smaller blue arrow.
As indicated in Slicer issue #2432, editor effect cursors were originally added to make it easier for users to know which editor effect was the current one. ENH: implementation of feature 2432 custom cursors in Editor · Slicer/Slicer@eba54b8 · GitHub
It is also a bit unclear to me why the smaller blue arrow is used rather than the standard Qt arrow cursor. The blue arrow cursor is nearly half the dimension of the regular OS level arrow cursor. This likely contributes to the user’s confusion about where their mouse click is going to start the interaction in the slice views.
- If editor effect cursor icons are the best way to represent clearly the active effect to the user, then maybe a solution is to make it clear that it is just an icon and not the actual cursor shape itself. One possible idea is to draw a black border around the image to more clearly indicate that it is an icon next to the cursor and not the actual cursor shape.
- Maybe the effect icon can be removed completely from the slice views with a different technique for better indicating the active editor effect?