Support Sticky Windows about bspwm

[baskerville]

How could a node exist in multiple trees?

[Stebalien]

A node can't but it should (maybe, I don't know much about how this part of bspwm works) be possible for a client to exist in multiple nodes.

[baskerville]

If a window is sticky in all desktops, then it will be visible at more than one place if there is more than one monitor.

[Stebalien]

*All desktops on one monitor. As the ewmh spec puts it, sticky windows should "stick to the glass [of the monitor]".

Of course, might cause some problems when moving a desktop from one monitor to the other. A reasonable solution would be to make all sticky windows float (thereby following the spec even more closely as sticky windows are supposed to maintain geometry across multiple desktops). This could be accomplished by putting sticky windows in a separate per-monitor sticky window list instead of in the per-desktop window trees.

[Stebalien]

Actually, after looking at the code, I realized that this would probably be a major pain in the a** to implement and would require quite a bit of refactoring (everything assumes that client's are contained in nodes). I'm closing this for now because I feel like I'm the only one who would use this. I'll reopen it if I can come up with a reasonable patch.

[baskerville]

In fact, it might not be as hard as I thought:

If a desktop is focused, I could simply transfer to it the sticky windows from the previously focused desktop.

So the sticky windows would always be in the tree of the focused desktop.

[Stebalien]

That does make it much easier. It also solves the problem of transferring a desktop from one monitor to the other.

[baskerville]

Should be working as of c6ceca7.

[Stebalien]

Thanks. Works great.

[Stebalien]

Sorry to bug you but can you make it so that sticky windows aren't transferred between monitors on focus? That is, transfer sticky windows from the previously focused desktop on the current monitor.

[baskerville]

Fixed by 35e9927?

[Stebalien]

Better but now switching desktops on an unfocused monitor doesn't transfer the sticky window. In other words, the following happens:

# * = focus; (s) = sticky window
#
# Mon A      Mon B

---------  ----------
| A1*   |  | B1 (s) |
---------  ----------

$ bspc desktop -f B2

---------  ----------
| A1    |  | B2*    |
---------  ----------

# Sticky window still on B1 after B2 focused.

[baskerville]

Fixed by 0d1ad51?

[Stebalien]

Thanks! Only one tiny (ridiculously low priority) bug remaining: control --adopt-orphans doesn't appear identify sticky windows (sticky windows loose their stickiness when bspwm is restarted).

[baskerville]

It should be working as of c5d4c65.

However, control --adopt-orphans shall only be used if restore -T fails.

[Stebalien]

Fixed. Thanks.