lawl
Apps with header bar
Hi, opensnap doesn't work with applications like Evince and others that use CSD (http://blogs.gnome.org/mclasen/2014/01/13/client-side-decorations-continued/), and also with Chromium. Would be great if it's possible to fix this...
The easiest way might be to just disable CSD.
Opensnap needs to know the size of the titlebar, right now it gets this from the EWMH hint _NET_FRAME_EXTENTS.
With a regular window this looks like this: _NET_FRAME_EXTENTS(CARDINAL) = 0, 0, 18, 0
With a CSD window it looks like this: _NET_FRAME_EXTENTS(CARDINAL) = 2, 2, 2, 2
The title bar height with a regular window would be 18px. With CSD the window draws it own title bar as part of the window and I do not see a way to retrieve the height using X/EWMH.
Chromium does have a regular title bar for me, maybe I've configured that a while back? I can't reproduce that.
As for fixing it, do you know a way to retrieve the size of the CSD using X APIs and EWMH?
If not, the only way to fix this is using to disable CSD.
FWIW chromium has a setting under "appearance": "Use system title bar and borders"
This looks like a bug in Gtk, here I've reported it: https://bugzilla.gnome.org/show_bug.cgi?id=736822