Enhancement Request: Catalyst Crop Resizing Experience

[rickshane]

In Image editing apps, the Crop Resizing UX is typically different on a Mac than on an iOS device.

On a Mac:

• The tool bar is hidden when a click is issued anywhere around the crop box within a fixed tolerance margin (inside and outside the frame).
• There are cursor rectangles in the view that change the cursor depending on the region of the crop frame being hit; for top, bottom, left, and right there is one type of cursor that is transformed based on which region. For the four corners: upper left, upper right, lower left, lower right, there is another cursor image that is transformed depending on the region being clicked.
• As soon as touches end and the crop resize animation finishes, then the toolbar shows again.

[rickshane]

Here is a video showing the control panel dismissal and cursor changing:

Resize.Cursor.Rects.mov

[rickshane]

Here is Apple Reference page which discusses how to set system cursors in Catalyst:

https://developer.apple.com/documentation/appkit/nscursor

It looks like cursor rects as used in AppKit are not supported in Catalyst. This will probably need to get solved with a Hover Gesture Recognizer:

https://developer.apple.com/documentation/uikit/uihovergesturerecognizer/