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output: introduce wlr_output_set_name

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wlroots picks names for all outputs, but it might be desirable for
compositor to override it.

For instance, Sway will use a headless output as a fallback in
case no outputs are connected. Sway wants to clearly label the
fallback output as such and label "real" headless outputs starting
from HEADLESS-1.
This commit is contained in:
Simon Ser 2021-12-09 15:43:19 +01:00
parent 1fbd13ec79
commit 36a2b19485
6 changed files with 33 additions and 9 deletions
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6
backend/wayland/output.c
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@ -520,8 +520,10 @@ struct wlr_output *wlr_wl_output_create(struct wlr_backend *wlr_backend) {
wlr_output_update_custom_mode(wlr_output, 1280, 720, 0);
strncpy(wlr_output->make, "wayland", sizeof(wlr_output->make));
strncpy(wlr_output->model, "wayland", sizeof(wlr_output->model));
snprintf(wlr_output->name, sizeof(wlr_output->name), "WL-%zd",
++backend->last_output_num);
char name[64];
snprintf(name, sizeof(name), "WL-%zd", ++backend->last_output_num);
wlr_output_set_name(wlr_output, name);
char description[128];
snprintf(description, sizeof(description),