Slices have been incredibly useful for my current project which uses a sprite-sheet with over 850 individual textures.
However, using slices can sometimes feel a little clunky compared to other features, so here are a few things I think could be cool to add.
1- The ability to select slices, then hold shift to add another area of slices to that selection as you can with the regular selection tool.
2- The ability to use the arrow keys to move selected slices 1px a time, like you can with regular selections.
3- The ability to copy/paste selected slices, like you can with regular selections.
4- Showing the dimensions of a slice in the bottom info bar when resizing an existing slice. (Currently the dimensions are only shown when creating a new slice.)
5- The ability to hold shift when resizing an existing slice to constrain its shape to a square. (Currently this only works when creating a new slice.)
6- The ability to change the border color of multiple slices in a selection without merging all of their text user data into that of one item within your selection. (This is especially important for using this [ [Script] Export slices by groups as individual images ] plug-in, which uses individual slice text user data to define each slice’s saved file directories independent to their border color.)
I just had to move a good chunk of my picture and I had to manually move the slices with the mouse to put them at the exact new matching position. With Shift + arrow keys to advance by grid increments, it would be very easier to move them at the same place.
Alternatively, a special option for the Move tool to also move slices that are completely or partially inside selection would be even better and do all the work at once!
Like the Readme file says, I recommend not using slices until bug fixes make them more stable. But I realize that people will use them anyway, so, caveat emptor.
The script does not include all the features mentioned by OP, and would never be as convenient as built-in features. But, at time of writing, it includes nudge keys that respond to snap to grid. If enabled, slices snap based on their top-left corner, otherwise they move in steps of 1. The hotkeys are Alt+W, Alt+A, Alt+S and Alt+D on Windows.
Thanks, this shall be useful. For my particular case, I’ll have to add a Move by parameter so I can move by a certain amount of pixels at once. I could probably copy the existing (Inset) Amount parameter, however I’d rather use a numerical field for more precise definition than a slider gauge (I had a similar issue with the Opacity slider gauge Input layer opacity value with numerical input so I prefer thinking ahead now).
I think “slices per frames” would be very useful too.
So if you have multiple different sprite sheets in each frame, you can have different slices per frame.
