From 08a6da05412961ddf629415a92749b02d875fa62 Mon Sep 17 00:00:00 2001
From: Nicholas Noll <nbnoll@eml.cc>
Date: Mon, 4 Oct 2021 17:25:48 -0700
Subject: feat(wm): layer shell

---
 sys/cmd/wm/render.c | 26 +++++++++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

(limited to 'sys/cmd/wm/render.c')

diff --git a/sys/cmd/wm/render.c b/sys/cmd/wm/render.c
index 3732ec5..ff4a514 100644
--- a/sys/cmd/wm/render.c
+++ b/sys/cmd/wm/render.c
@@ -15,7 +15,6 @@ render(struct wlr_surface *surface, int sx, int sy, void *data)
 {
     float matrix[9];
     double x, y;
-    Client  *client;
     struct Payload *payload;
 
     struct wlr_box box;
@@ -24,7 +23,6 @@ render(struct wlr_surface *surface, int sx, int sy, void *data)
     enum wl_output_transform transform;
 
     payload = data;
-    client  = payload->client;
     output  = payload->output;
 
     texture = wlr_surface_get_texture(surface);
@@ -50,6 +48,23 @@ render(struct wlr_surface *surface, int sx, int sy, void *data)
     wlr_presentation_surface_sampled_on_output(server.present, surface, output);
 }
 
+static
+void
+render_layer(struct wl_list *list, struct timespec *now)
+{
+    Layer *layer;
+    wl_list_for_each(layer, list, link) {
+        struct Payload payload= {
+            .output = layer->surface->output,
+            .x = layer->geometry.x,
+            .y = layer->geometry.y,
+            .when = now,
+        };
+
+        wlr_surface_for_each_surface(layer->surface->surface, render, &payload);
+    }
+}
+
 static
 void
 render_clients(Monitor *monitor, struct timespec *now)
@@ -94,7 +109,6 @@ render_clients(Monitor *monitor, struct timespec *now)
 
         struct Payload payload = {
             .output   = output,
-            .client   = client,
             .when     = now,
 
             .x = client->geometry.x + client->border,
@@ -131,8 +145,14 @@ render_monitor(struct wl_listener *l, void *data)
     wlr_renderer_begin(server.renderer, w, h);
     wlr_renderer_clear(server.renderer, cfg·rootcolor);
 
+    render_layer(&monitor->layer[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND], &now);
+    render_layer(&monitor->layer[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM], &now);
+
     render_clients(monitor, &now);
 
+    render_layer(&monitor->layer[ZWLR_LAYER_SHELL_V1_LAYER_TOP], &now);
+    render_layer(&monitor->layer[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY], &now);
+
     wlr_output_render_software_cursors(monitor->output, nil);
 
     wlr_renderer_end(server.renderer);
-- 
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