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fix crash when the last monitor is disconnected

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Leonardo Hernandez Hernandez 2021-11-04 08:19:13 -06:00 committed by Leonardo Hernández Hernández
parent 3e6d584de1
commit 8cace19218
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GPG key ID: E538897EE11B9624
1 changed files with 16 additions and 5 deletions
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dwl.c
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@ -57,7 +57,7 @@
#define MAX(A, B) ((A) > (B) ? (A) : (B))
#define MIN(A, B) ((A) < (B) ? (A) : (B))
#define CLEANMASK(mask) (mask & ~WLR_MODIFIER_CAPS)
#define VISIBLEON(C, M) ((C)->mon == (M) && ((C)->tags & (M)->tagset[(M)->seltags]))
#define VISIBLEON(C, M) ((M) && (C)->mon == (M) && ((C)->tags & (M)->tagset[(M)->seltags]))
#define LENGTH(X) (sizeof X / sizeof X[0])
#define END(A) ((A) + LENGTH(A))
#define TAGMASK ((1 << LENGTH(tags)) - 1)
@ -720,10 +720,11 @@ cleanupmon(struct wl_listener *listener, void *data)
wl_list_remove(&m->link);
wlr_output_layout_remove(output_layout, m->wlr_output);
nmons = wl_list_length(&mons);
if ((nmons = wl_list_length(&mons)))
do // don't switch to disabled mons
selmon = wl_container_of(mons.prev, selmon, link);
while (!selmon->wlr_output->enabled && i++ < nmons);
focusclient(focustop(selmon), 1);
closemon(m);
free(m);
@ -860,6 +861,16 @@ createmon(struct wl_listener *listener, void *data)
wlr_output_layout_add(output_layout, wlr_output, r->x, r->y);
sgeom = *wlr_output_layout_get_box(output_layout, NULL);
/* If length == 1 we need update selmon.
* Maybe it will change in run(). */
if (wl_list_length(&mons) == 1) {
Client *c;
selmon = m;
/* If there is any client, set c->mon to this monitor */
wl_list_for_each(c, &clients, link)
setmon(c, m, c->tags);
}
/* When adding monitors, the geometries of all monitors must be updated */
wl_list_for_each(m, &mons, link) {
/* The first monitor in the list is the most recently added */