Allow changing a title's position by drag&drop only when it's visible
@aleb
Submitted by Alex Băluț Assigned to Alex Băluț @aleb
Description
The title editor allows you to place the title by drag&dropping on the main viewer.
The problem with this is that if you click a title clip, then press <space>
to play and the playhead goes past the title clip, then press <space>
again, if you drag&drop intentionally or by mistake on the viewer, you don't see the effect on the selected title clip.
A complete solution would be to allow drag&drop only when the mouse is over the title.
A good enough and very simple solution would be to allow drag&drop only when the playhead is over the current title clip (and hopefully the title clip is visible).
Imported from https://bugzilla.gnome.org/show_bug.cgi?id=727556