Massive code refactor

src/layout.h

@@ -0,0 +1,43 @@
+#ifndef PEACHWM_LAYOUT_H
+#define PEACHWM_LAYOUT_H
+
+#include "monitor.h"
+#include "client.h"
+
+/* dwindle binary tree node */
+struct DwindleNode {
+	DwindleNode *children[2];
+	DwindleNode *parent;
+	Client *client;
+	struct wlr_box box;
+	float split_ratio;
+	int split_top;
+	int is_node;
+};
+
+/* layout table and count */
+extern const Layout layouts[];
+extern const unsigned int layout_count;
+
+/* layout entry points (called via Layout.arrange function pointer) */
+void dwindle(Monitor *m);
+void master(Monitor *m);
+void monocle(Monitor *m);
+
+/* helpers used across modules */
+int current_tag_idx(Monitor *m);
+const Layout *curlayout(Monitor *m);
+
+/* dwindle tree helpers (exposed for swapdir) */
+DwindleNode *dwindle_find_leaf(DwindleNode *n, Client *c);
+void dwindle_recalc(DwindleNode *n, int gap);
+
+/* lifecycle helpers (called from peachwm.c unmap/cleanup) */
+void dwindle_free_tree(DwindleNode *n);
+void dwindle_remove_client(Client *c);
+void master_remove_client(Client *c);
+
+/* tile drag swap (called from buttonpress handler) */
+void swaptiled(Client *a, Client *b);
+
+#endif /* PEACHWM_LAYOUT_H */