When the launcher contains more icons than space allows, some of the icons are folded up (the "accordion" behaviour). When the launcher is in this state, a mouseover causes the folded launcher items to unfold.
The unfold should cause minimal movement around the mouse itself. That means that:
- if the mouseover occurs on a flattened item, the unfolding should NOT move the flattened items at all (the expansion should just happen at either end of the launcher, taking those parts outside the screen boundaries).
-if the mouseover occurs on a folded item:
- we should calculate which icon the mouse is over
- we should calculate where it has been placed relative to the top and bottom of the icon
- the unfolding should place the icon at the same relative position on the flattened view of that same item
- in other words, the mouse point should act as a pivot, with the icon unfolding above and below that, without obvious vertical movement of that icon itself
How to test this:
- make sure the launcher is accordioned (there are some folded icons visible)
- move the mouse onto a flat item, and there should be NO movement of ANY flat items, just an unfolding of the folded items on the end(s) of the launcher
- move the mouse back off the launcher, and the ends should fold again
- carefully move the mouse onto a folded icon
- that icon should unfold and not move up or down, other than unfolding around the mouse pointer
- icons above and below the pointer should move up and down, respectively
This seems less noticeable now, could it be fixed?