Here’s a tricky usability question: how would you represent the actions of grouping and ungrouping clips on a timeline? (Un)grouping is used for changing the way selections affect a set of clips. It allows you, among other things, to separate and remove the audio from the video of a clip.
It is very hard to find any relevant prior art that could guide me for this metaphor (most applications don’t have icons for these, they are only available through menu items). Inkscape can get away with icons that show “drag handles”, but we don’t have those in Pitivi. (un)grouping is quite an abstract concept, given that it does not visually change the clips in any way, it just changes the way they react to selections.
The last two items in the image below are the current group/ungroup icons:
Here is my attempt at making new ones with clearer meaning:
What do you think? Do you have better ideas on how to represent this?
Note: the icons I made are pixel-perfect, the 1px black lines above the icons are not my fault (I think). GTK seems to add some sort of shadow, probably because it expects symbolic icons in that toolbar (but I can’t imagine a way to represent clip interactions without color).
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