show a temporary value tooltip when dragging a keyframe
@jeff
Submitted by Jeff F.T. Assigned to Jeff F.T. @jeff
Description
It is difficult to gauge at what value you are setting a keyframe when dragging it. As such, it would be nice to have a simple tooltip near the mouse cursor to preview the value, allowing for a bit more precision rather than just "visual guesswork based on the height of the clip widget".
Imported from https://bugzilla.gnome.org/show_bug.cgi?id=589818