void reorder_monitor(monitor_t *m)
{
if (m == NULL) {
return;
}
monitor_t *prev = m->prev;
while (prev != NULL && rect_cmp(m->rectangle, prev->rectangle) < 0) {
swap_monitors(m, prev);
prev = m->prev;
}
monitor_t *next = m->next;
while (next != NULL && rect_cmp(m->rectangle, next->rectangle) > 0) {
swap_monitors(m, next);
next = m->next;
}
}
bool update_monitors(void)
{
PUTS("update monitors");
xcb_randr_get_screen_resources_current_reply_t *sres = xcb_randr_get_screen_resources_current_reply(dpy, xcb_randr_get_screen_resources_current(dpy, root), NULL);
if (sres == NULL)
return false;
monitor_t *m, *mm = NULL;
int len = xcb_randr_get_screen_resources_current_outputs_length(sres);
xcb_randr_output_t *outputs = xcb_randr_get_screen_resources_current_outputs(sres);
xcb_randr_get_output_info_cookie_t cookies[len];
for (int i = 0; i < len; i++)
cookies[i] = xcb_randr_get_output_info(dpy, outputs[i], XCB_CURRENT_TIME);
for (m = mon_head; m != NULL; m = m->next)
m->wired = false;
for (int i = 0; i < len; i++) {
xcb_randr_get_output_info_reply_t *info = xcb_randr_get_output_info_reply(dpy, cookies[i], NULL);
if (info != NULL) {
if (info->crtc != XCB_NONE) {
xcb_randr_get_crtc_info_reply_t *cir = xcb_randr_get_crtc_info_reply(dpy, xcb_randr_get_crtc_info(dpy, info->crtc, XCB_CURRENT_TIME), NULL);
if (cir != NULL) {
xcb_rectangle_t rect = (xcb_rectangle_t) {cir->x, cir->y, cir->width, cir->height};
mm = get_monitor_by_id(outputs[i]);
if (mm != NULL) {
mm->rectangle = rect;
update_root(mm);
for (desktop_t *d = mm->desk_head; d != NULL; d = d->next)
for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n, d->root))
translate_client(mm, mm, n->client);
arrange(mm, mm->desk);
mm->wired = true;
PRINTF("update monitor %s (0x%X)\n", mm->name, mm->id);
} else {
mm = add_monitor(rect);
char *name = (char *)xcb_randr_get_output_info_name(info);
size_t name_len = MIN(sizeof(mm->name), (size_t)xcb_randr_get_output_info_name_length(info) + 1);
snprintf(mm->name, name_len, "%s", name);
mm->id = outputs[i];
PRINTF("add monitor %s (0x%X)\n", mm->name, mm->id);
}
}
free(cir);
} else if (!remove_disabled_monitors && info->connection != XCB_RANDR_CONNECTION_DISCONNECTED) {
m = get_monitor_by_id(outputs[i]);
if (m != NULL)
m->wired = true;
}
}
free(info);
}
/* initially focus the primary monitor and add the first desktop to it */
xcb_randr_get_output_primary_reply_t *gpo = xcb_randr_get_output_primary_reply(dpy, xcb_randr_get_output_primary(dpy, root), NULL);
if (gpo != NULL) {
pri_mon = get_monitor_by_id(gpo->output);
if (!running && pri_mon != NULL) {
if (mon != pri_mon)
mon = pri_mon;
add_desktop(pri_mon, make_desktop(NULL));
ewmh_update_current_desktop();
}
}
free(gpo);
/* handle overlapping monitors */
if (merge_overlapping_monitors) {
m = mon_head;
while (m != NULL) {
monitor_t *next = m->next;
if (m->wired) {
monitor_t *mb = mon_head;
while (mb != NULL) {
monitor_t *mb_next = mb->next;
if (m != mb && mb->wired && contains(m->rectangle, mb->rectangle)) {
if (mm == mb) {
mm = m;
}
if (next == mb) {
next = mb_next;
}
merge_monitors(mb, m);
remove_monitor(mb);
}
mb = mb_next;
}
}
m = next;
}
}
/* merge and remove disconnected monitors */
if (remove_unplugged_monitors) {
m = mon_head;
while (m != NULL) {
monitor_t *next = m->next;
if (!m->wired) {
merge_monitors(m, mm);
remove_monitor(m);
}
m = next;
}
}
/* add one desktop to each new monitor */
for (m = mon_head; m != NULL; m = m->next)
if (m->desk == NULL && (running || pri_mon == NULL || m != pri_mon))
add_desktop(m, make_desktop(NULL));
if (!running && pri_mon != NULL && mon_head != pri_mon)
swap_monitors(mon_head, pri_mon);
free(sres);
update_motion_recorder();
return (num_monitors > 0);
}