dorne/cursetree/node.h

#ifndef CURSETREE_NODE_H
#define CURSETREE_NODE_H

#include "dims.h"

# ifndef __NCURSES_H
typedef struct _win_st WINDOW;
# endif /* __NCURSES_H */

#define NODE_CHILD_N 2

/* MACRO:
 * Get widnow node start x,y coordinates, width, & height.
 * void NODEDIMS(struct ct_node *node, struct ct_dims dims);
 */
#define GET_WNODEDIMS(dims, node)                                              \
  (getbegyx((node)->win, dims.y, dims.x));                                     \
  getmaxyx((node)->win, dims.y, dims.x)

enum ct_nodetype {
  NODE_WINDOW,
  NODE_ABSTRACT,
};

struct ct_node {
  enum ct_nodetype type;
  // union value depends on ct_node.type
  union {
    WINDOW *win;
    struct {
      enum ct_axis axis;
      float ratio;
      struct ct_dims *dims;
      struct ct_node *child[NODE_CHILD_N];
    };
  };
};

/* === External Interface === */
struct ct_node *init_window_node(WINDOW *const win);
void destroy_node(struct ct_node *const node);
void resize_node(struct ct_node *const node,
                 struct ct_dims *const new_dims);

void bifurcate_window_node(struct ct_node **const node,
                           const enum ct_axis axis, const int invert_axis,
                           const float ratio);

#endif /* CURSETREE_NODE_H */