#include <ncurses.h>

typedef struct _win_border_struct {
  chtype  ls, rs, ts, bs,
          tl, tr, bl, br;
}WIN_BORDER;

typedef struct _WIN_struct {
  int startx, starty;
  int height, width;
  WIN_BORDER border;
}WIN;

void init_win_params(WIN *p_win);
void print_win_params(WIN *p_win);
void create_box(WIN *win, bool flag);

int main(int argc, char *argv[])
{ WIN win;
  int ch;

  initscr();                      /* curses ilklendirme           */
  start_color();                  /* Renk özelliğini başlat       */
  cbreak();                       /* Satır önbelleği etkisiz,     *
                                   * herşeyi bana gönder          */
  keypad(stdscr, TRUE);           /* Şu şeker F1'e ihtiyacım var  */
  noecho();
  init_pair(1, COLOR_CYAN, COLOR_BLACK);

  /* Pencere parametrelerini ilklendir */
  init_win_params(&win);
  print_win_params(&win);

  attron(COLOR_PAIR(1));
  printw("Çıkmak için F1'e basınız");
  refresh();
  attroff(COLOR_PAIR(1));

  create_box(&win, TRUE);
  while((ch = getch()) != KEY_F(1))
  { switch(ch)
    { case KEY_LEFT:
        create_box(&win, FALSE);
        --win.startx;
        create_box(&win, TRUE);
        break;
      case KEY_RIGHT:
        create_box(&win, FALSE);
        ++win.startx;
        create_box(&win, TRUE);
        break;
      case KEY_UP:
        create_box(&win, FALSE);
        --win.starty;
        create_box(&win, TRUE);
        break;
      case KEY_DOWN:
        create_box(&win, FALSE);
        ++win.starty;
        create_box(&win, TRUE);
        break;
    }
  }
  endwin();                       /* Curses kipi sonu */
  return 0;
}
void init_win_params(WIN *p_win)
{
    p_win->height = 3;
    p_win->width = 10;
    p_win->starty = (LINES - p_win->height)/2;
    p_win->startx = (COLS - p_win->width)/2;

    p_win->border.ls = '|';
    p_win->border.rs = '|';
    p_win->border.ts = '-';
    p_win->border.bs = '-';
    p_win->border.tl = '+';
    p_win->border.tr = '+';
    p_win->border.bl = '+';
    p_win->border.br = '+';
}
void print_win_params(WIN *p_win)
{
#ifdef _DEBUG
  mvprintw(25, 0, "%d %d %d %d", p_win->startx, p_win->starty,
           p_win->width, p_win->height);
  refresh();
#endif
}
void create_box(WIN *p_win, bool flag)
{ int i, j;
  int x, y, w, h;

  x = p_win->startx;
  y = p_win->starty;
  w = p_win->width;
  h = p_win->height;

  if(flag == TRUE)
  { mvaddch(y, x, p_win->border.tl);
    mvaddch(y, x + w, p_win->border.tr);
    mvaddch(y + h, x, p_win->border.bl);
    mvaddch(y + h, x + w, p_win->border.br);
    mvhline(y, x + 1, p_win->border.ts, w - 1);
    mvhline(y + h, x + 1, p_win->border.bs, w - 1);
    mvvline(y + 1, x, p_win->border.ls, h - 1);
    mvvline(y + 1, x + w, p_win->border.rs, h - 1);

  }
  else
    for(j = y; j <= y + h; ++j)
      for(i = x; i <= x + w; ++i)
        mvaddch(j, i, ' ');

  refresh();
}