From 29a8910556b47e1c78b23a84f12b698e115ffea8 Mon Sep 17 00:00:00 2001
From: Rakarake <raka@rakarake.xyz>
Date: Thu, 25 Dec 2025 23:59:11 +0100
Subject: [PATCH] WIP wlr_layer_shell

---
 glonkers.c |  7 +++++--
 wayland.c  | 13 +++++++++++++
 wayland.h  |  1 +
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/glonkers.c b/glonkers.c
index b660871..fed3237 100644
--- a/glonkers.c
+++ b/glonkers.c
@@ -36,10 +36,13 @@ int main(int argc, char *argv[]) {
     }
     if (argc >= 3) {
         // xdg toplevel window (window) or wlr_layer_shell window (layer)
-        if (strcmp(argv[2], "window")) {
+        if (strcmp(argv[2], "window") == 0) {
             output_type = OUTPUT_WINDOW;
-        } else if (strcmp(argv[2], "layer")) {
+        } else if (strcmp(argv[2], "layer") == 0) {
             output_type = OUTPUT_LAYER;
+        } else {
+            printf("argument 2 is either 'window' or 'layer' 🍰\n");
+            return 1;
         }
     }
 
diff --git a/wayland.c b/wayland.c
index 6660521..8d06d9c 100644
--- a/wayland.c
+++ b/wayland.c
@@ -54,6 +54,17 @@ static const struct xdg_toplevel_listener xdg_toplevel_listener = {
     .close = xdg_toplevel_close,
 };
 
+static void zwlr_layer_surface_v1_configure(void *data, struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1, uint32_t serial, uint32_t width, uint32_t height) {
+    struct client_state *state = data;
+    state->width = width;
+    state->height = height;
+    wl_egl_window_resize(state->egl_window, width, height, 0, 0);
+}
+
+static const struct zwlr_layer_surface_v1_listener zwlr_layer_surface_v1_listener = {
+    .configure = zwlr_layer_surface_v1_configure,
+};
+
 static void registry_handle_global(
         void *data,
         struct wl_registry *registry,
@@ -87,6 +98,8 @@ static void registry_handle_global(
     }
     if ((strcmp(interface, zwlr_layer_shell_v1_interface.name) == 0) && (state->output_type == OUTPUT_LAYER)) {
         state->zwlr_layer_shell_v1 = wl_registry_bind(registry, name, &zwlr_layer_shell_v1_interface, 4);
+        int layer = ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND;
+        state->zwlr_layer_surface_v1 = zwlr_layer_shell_v1_get_layer_surface(state->zwlr_layer_shell_v1, state->wl_surface, NULL, layer, "wallpaper");
     }
     if (strcmp(interface, wl_output_interface.name) == 0) {
         state->wl_output = wl_registry_bind(
diff --git a/wayland.h b/wayland.h
index 6b705ff..cfaf7b8 100644
--- a/wayland.h
+++ b/wayland.h
@@ -26,6 +26,7 @@ struct client_state {
 
     // wlr_layer_shell
     struct zwlr_layer_shell_v1 *zwlr_layer_shell_v1;
+    struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1;
     struct wl_output *wl_output;
 
     EGLDisplay egl_display;