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backend/noop: improve output number handling

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This improves the way the output numbers are handled for the noop
backend. Instead of using the number of active outputs plus one, the
last used number is stored and new outputs will increment it. This
fixes the situation where you start with one output, create a second,
close the first, and create a third. Without this, both outputs will be
NOOP-2, which causes an issue since the identifier will also be
identical. With this, the last output is NOOP-3 and the outputs can be
distinguished.
This commit is contained in:
Brian Ashworth 2019-03-15 11:49:21 -04:00 committed by emersion
parent c97f0eb0f2
commit 6b7f5e4010
2 changed files with 3 additions and 2 deletions
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4
backend/noop/output.c
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@ -61,8 +61,8 @@ struct wlr_output *wlr_noop_add_output(struct wlr_backend *wlr_backend) {
strncpy(wlr_output->make, "noop", sizeof(wlr_output->make));
strncpy(wlr_output->model, "noop", sizeof(wlr_output->model));
snprintf(wlr_output->name, sizeof(wlr_output->name), "NOOP-%d",
wl_list_length(&backend->outputs) + 1);
snprintf(wlr_output->name, sizeof(wlr_output->name), "NOOP-%ld",
++backend->last_output_num);
wl_list_insert(&backend->outputs, &output->link);

1
include/backend/noop.h
View file

@ -8,6 +8,7 @@ struct wlr_noop_backend {
struct wlr_backend backend;
struct wl_display *display;
struct wl_list outputs;
size_t last_output_num;
bool started;
};