#include <panel.h>

#define NLINES 10
#define NCOLS 40

void init_wins(WINDOW **wins, int n);
void win_show(WINDOW *win, char *label, int label_color);
void print_in_middle(WINDOW *win, int starty, int startx, int width,
    char *string, chtype color);

int main()
{ WINDOW *my_wins[3];
  PANEL  *my_panels[3];
  PANEL  *top;
  int ch;

  /* Curses kipini ilklendir */
  initscr();
  start_color();
  cbreak();
  noecho();
  keypad(stdscr, TRUE);

  /* Tüm renkleri ilklendir */
  init_pair(1, COLOR_RED, COLOR_BLACK);
  init_pair(2, COLOR_GREEN, COLOR_BLACK);
  init_pair(3, COLOR_BLUE, COLOR_BLACK);
  init_pair(4, COLOR_CYAN, COLOR_BLACK);

  init_wins(my_wins, 3);

  /* Her pencereyi bir panele bağla */    /* Sıralama aşağıdan yukarıya */
  my_panels[0] = new_panel(my_wins[0]);   /* 0'a  it, sıra: stdscr-0 */
  my_panels[1] = new_panel(my_wins[1]);   /* 1'e  it, sıra: stdscr-0-1 */
  my_panels[2] = new_panel(my_wins[2]);   /* 2'ye it, sıra: stdscr-0-1-2 */

  /* Kullanıcı işaretçilerini bir sonraki panele ayarla */
  set_panel_userptr(my_panels[0], my_panels[1]);
  set_panel_userptr(my_panels[1], my_panels[2]);
  set_panel_userptr(my_panels[2], my_panels[0]);

  /* Yığını güncelle. 2. panel en üstte olacak */
  update_panels();

  /* Ekranda göster */
  attron(COLOR_PAIR(4));
  mvprintw(LINES - 2, 0,
    "Pencerelerde gezinmek için tab kullanın (Çıkmak için F1)");
  attroff(COLOR_PAIR(4));
  doupdate();

  top = my_panels[2];
  while((ch = getch()) != KEY_F(1))
  { switch(ch)
    { case 9:
        top = (PANEL *)panel_userptr(top);
        top_panel(top);
        break;
    }
    update_panels();
    doupdate();
  }
  endwin();
  return 0;
}

/* Tüm pencereleri yazdır */
void init_wins(WINDOW **wins, int n)
{ int x, y, i;
  char label[80];

  y = 2;
  x = 10;
  for(i = 0; i < n; ++i)
  { wins[i] = newwin(NLINES, NCOLS, y, x);
    sprintf(label, "Pencere Numaası %d", i + 1);
    win_show(wins[i], label, i + 1);
    y += 3;
    x += 7;
  }
}

/* Pencereyi bir çerçeve ve isimle göster */
void win_show(WINDOW *win, char *label, int label_color)
{ int startx, starty, height, width;

  getbegyx(win, starty, startx);
  getmaxyx(win, height, width);

  box(win, 0, 0);
  mvwaddch(win, 2, 0, ACS_LTEE);
  mvwhline(win, 2, 1, ACS_HLINE, width - 2);
  mvwaddch(win, 2, width - 1, ACS_RTEE);

  print_in_middle(win, 1, 0, width, label, COLOR_PAIR(label_color));
}

void print_in_middle (WINDOW *win, int starty, int startx, int width,
    char *string, chtype color)
{ int length, x, y;
  float temp;

  if(win == NULL)
    win = stdscr;
  getyx(win, y, x);
  if(startx != 0)
    x = startx;
  if(starty != 0)
    y = starty;
  if(width == 0)
    width = 80;

  length = strlen(string);
  temp = (width - length)/ 2;
  x = startx + (int)temp;
  wattron(win, color);
  mvwprintw(win, y, x, "%s", string);
  wattroff(win, color);
  refresh();
}