cmake: break out bar stuff to separate CMakeLists.txt

bar/bar.h

@@ -0,0 +1,47 @@
+#pragma once
+
+#include "../color.h"
+#include "../module.h"
+
+struct bar {
+    int abort_fd;
+
+    void *private;
+    int (*run)(struct bar *bar);
+    void (*destroy)(struct bar *bar);
+
+    void (*refresh)(const struct bar *bar);
+    void (*set_cursor)(struct bar *bar, const char *cursor);
+};
+
+enum bar_location { BAR_TOP, BAR_BOTTOM };
+
+struct bar_config {
+    const char *monitor;
+    enum bar_location location;
+    int height;
+    int left_spacing, right_spacing;
+    int left_margin, right_margin;
+
+    struct rgba background;
+
+    struct {
+        int width;
+        struct rgba color;
+    } border;
+
+    struct {
+        struct module **mods;
+        size_t count;
+    } left;
+    struct {
+        struct module **mods;
+        size_t count;
+    } center;
+    struct {
+        struct module **mods;
+        size_t count;
+    } right;
+};
+
+struct bar *bar_new(const struct bar_config *config);