Implement bar gaps

Adds the bar subcommand `gaps <amount>|<horizontal> <vertical>|<top>
<right> <bottom> <left>` to set gaps for swaybar. Due to restrictions on
margins for a layer_surface, only the sides that are anchored to an edge
of the screen can have gaps. Since there is support for per-side outer
gaps for workspaces, those should be able to be used instead for the
last side.

1 files changed, 12 insertions, 0 deletions

diff --git a/sway/ipc-json.c b/sway/ipc-json.c
index 40fbd3e7..fc631373 100644
--- a/sway/ipc-json.c
+++ b/sway/ipc-json.c
@@ -638,6 +638,18 @@ json_object *ipc_json_describe_bar_config(struct bar_config *bar) {
                         json_object_new_string(bar->status_command) : NULL);
         json_object_object_add(json, "font",
                         json_object_new_string((bar->font) ? bar->font : config->font));
+
+        json_object *gaps = json_object_new_object();
+        json_object_object_add(gaps, "top",
+                        json_object_new_int(bar->gaps.top));
+        json_object_object_add(gaps, "right",
+                        json_object_new_int(bar->gaps.right));
+        json_object_object_add(gaps, "bottom",
+                        json_object_new_int(bar->gaps.bottom));
+        json_object_object_add(gaps, "left",
+                        json_object_new_int(bar->gaps.left));
+        json_object_object_add(json, "gaps", gaps);
+
         if (bar->separator_symbol) {
                 json_object_object_add(json, "separator_symbol",
                                 json_object_new_string(bar->separator_symbol));