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, 5 insertions, 0 deletions

diff --git a/swaybar/render.c b/swaybar/render.c
index 8269a840..77cfecbf 100644
--- a/swaybar/render.c
+++ b/swaybar/render.c
@@ -506,6 +506,11 @@ void render_frame(struct swaybar_output *output) {
         if (height != output->height || output->width == 0) {
                 // Reconfigure surface
                 zwlr_layer_surface_v1_set_size(output->layer_surface, 0, height);
+                zwlr_layer_surface_v1_set_margin(output->layer_surface,
+                                output->bar->config->gaps.top,
+                                output->bar->config->gaps.right,
+                                output->bar->config->gaps.bottom,
+                                output->bar->config->gaps.left);
                 if (strcmp(output->bar->config->mode, "dock") == 0) {
                         zwlr_layer_surface_v1_set_exclusive_zone(output->layer_surface, height);
                 }