Open Radar

 
Summary:
When increasing the “Cursor size” to Large (4x default resolution) in the Vision > Display section of the Accessibility system preferences, custom cursors are limited to the 2x resolution representation scaled up, while system-provided cursors are displayed at full resolution.

The custom cursor is created in the way described here:
http://stackoverflow.com/questions/19245387/nscursor-using-high-resolution-cursors-with-cursor-zoom-or-retina
This method provides custom cursors for scale factors, 1 thru 4. This can easily be increased to 8 for Large cursors for retina 2x resolution.

Steps to Reproduce:
1. Build and run an OS X app that displays custom cursors and
2. Set the  “Cursor size” to Large in the Vision > Display section of the Accessibility system preferences
3. Switch to custom cursors app & view and observe the scaled-up/pixelated cursor
4. Move the cursor outside of the custom cursor view or window and observe that the system-provided cursor is perfectly resolved 

Expected Results:
The appropriate cursor image representation should be used instead of a lower resolution one used scaled up.

Actual Results:
The 2x resolution representation is scaled up to fill the cursor frame.

Regression:
none

Notes:
It would be even better, if a resolution independent cursor image could be provided to NSCursor’s -initWithImage:hotSpot: so that it can do “the right thing” to get smooth, sharp cursors under all possible circumstances.