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From e7782eaa0f7376cf607fe8efa958cd7d1bcf9a75 Mon Sep 17 00:00:00 2001
From: Daniel Guihot <daniel@guihot.net>
Date: Wed, 16 Sep 2026 05:07:55 +1000
Subject: [PATCH] stickyfullscreen: keep fullscreen until the user drops it
Many games clear _NET_WM_STATE_FULLSCREEN themselves when they lose
focus, so switching tags or moving the pointer leaves the window tiled
or windowed. Ignore a clear that arrives while the client is not the
selected client, and restore the geometry when it is focused again. A
clear from the focused client is still honoured, which is how the user
exits fullscreen.
---
dwm.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/dwm.c b/dwm.c
index 53b393e..82f3a0c 100644
--- a/dwm.c
+++ b/dwm.c
@@ -802,6 +802,8 @@ focus(Client *c)
grabbuttons(c, 1);
XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColBorder].pixel);
setfocus(c);
+ if (lockfullscreen && c->isfullscreen)
+ resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
} else {
XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
@@ -1482,6 +1484,8 @@ setfocus(Client *c)
void
setfullscreen(Client *c, int fullscreen)
{
+ if (lockfullscreen && !fullscreen && c->isfullscreen && c != selmon->sel)
+ return;
if (fullscreen && !c->isfullscreen) {
XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
--
2.55.0
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