add bar class

src/bar.hpp

@@ -2,15 +2,21 @@
 // See LICENSE file for copyright and license details.
 
 #pragma once
+#include <optional>
 #include <wayland-client.h>
 #include "wlr-layer-shell-unstable-v1-client-protocol.h"
 #include "common.hpp"
 #include "shm_buffer.hpp"
 
 class Bar {
+    static const zwlr_layer_surface_v1_listener _layerSurfaceListener;
+
     wl_surface *_surface {nullptr};
     zwlr_layer_surface_v1 *_layerSurface {nullptr};
-    ShmBuffer _bufs;
+    std::optional<ShmBuffer> _bufs;
+
+    void layerSurfaceConfigure(uint32_t serial, uint32_t width, uint32_t height);
 public:
-    explicit Bar(wl_output *output);
+    explicit Bar(const wl_output *output);
+    ~Bar();
 };