src/window.c

   1 /* vim:tw=78:ts=8:sw=4:set ft=c:  */
   2 /*
   3     Copyright (C) 2002-2015 Ben Kibbey <bjk@luxsci.net>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18 */
  19 #ifdef HAVE_CONFIG_H
  20 #include <config.h>
  21 #endif
  22
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include "common.h"
  27 #include "misc.h"
  28 #include "window.h"
  29
  30 /*
  31  * Creates a new window on the 'wins' stack. Returns the newly create window
  32  * structure. The 'func' parameter is a function pointer that is called from
  33  * game_loop(). 'efunc' is called just before the window is destroyed.
  34  */
  35 WIN *window_create(const char *title, int h, int w, int y, int x,
  36         window_func func, void *data, window_exit_func efunc)
  37 {
  38     int i = 0;
  39
  40     if (wins)
  41         for (i = 0; wins[i]; i++);
  42
  43     wins = Realloc(wins, (i + 2) * sizeof(WIN *));
  44     wins[i] = Calloc(1, sizeof(WIN));
  45     wins[i]->w = newwin(h, w, y, x);
  46     wins[i]->p = new_panel(wins[i]->w);
  47     wins[i]->data = data;
  48     wins[i]->rows = h;
  49     wins[i]->cols = w;
  50     wins[i]->func = func;
  51     wins[i]->efunc = efunc;
  52     wins[i]->title = (title) ? strdup(title) : NULL;
  53     wins[i+1] = NULL;
  54     return wins[i];
  55 }
  56
  57 void window_destroy(WIN *win)
  58 {
  59     int i, n;
  60     WIN **new = NULL;
  61
  62     if (!wins)
  63         return;
  64
  65     for (i = 0; wins[i]; i++);
  66
  67     while (i > 0 && wins[--i]->keep) {
  68         if (win && memcmp(win, wins[i], sizeof(WIN)) == 0)
  69             win = NULL;
  70
  71         free(wins[i]->title);
  72         if (wins[i]->p)
  73             del_panel(wins[i]->p);
  74
  75         delwin(wins[i]->w);
  76
  77         if (wins[i]->freedata && wins[i]->data)
  78             free(wins[i]->data);
  79
  80         free(wins[i]);
  81         wins[i] = NULL;
  82     }
  83
  84     for (i = n = 0; wins[i]; i++) {
  85         if (win && !win->keep && memcmp(win, wins[i], sizeof(WIN)) == 0) {
  86             if (win->p)
  87                 del_panel(win->p);
  88
  89             free(win->title);
  90             delwin(win->w);
  91             free(win);
  92             win = NULL;
  93             continue;
  94         }
  95
  96         if (win && win->keep && memcmp(win, wins[i], sizeof(WIN)) == 0) {
  97             del_panel(win->p);
  98             win->p = NULL;
  99         }
 100
 101         new = Realloc(new, (n + 2) * sizeof(WIN *));
 102         new[n++] = wins[i];
 103     }
 104
 105     free(wins);
 106     wins = NULL;
 107
 108     if (new) {
 109         new[n] = NULL;
 110         wins = new;
 111     }
 112 }
 113
 114 void window_draw_title(WINDOW *win, const char *title, int width, chtype attr,
 115         chtype battr)
 116 {
 117     int i;
 118
 119     if (title) {
 120         wchar_t *p;
 121
 122         wattron(win, attr);
 123
 124         for (i = 1; i < width - 1; i++)
 125             mvwaddch(win, 1, i, ' ');
 126
 127         if (mblen (title, strlen(title)) > width) {
 128             p = str_etc(title, width - 2, 1);
 129         }
 130         else
 131           p = str_to_wchar (title);
 132
 133         mvwaddwstr(win, 1, CENTERX(width, p), p);
 134         wattroff(win, attr);
 135         free (p);
 136     }
 137
 138     wattron(win, battr);
 139     box(win, ACS_VLINE, ACS_HLINE);
 140     wattroff(win, battr);
 141 }
 142
 143 void window_draw_prompt(WINDOW *win, int y, int width, const char *str,
 144         chtype attr)
 145 {
 146     int i;
 147
 148     wattron(win, attr);
 149
 150     for (i = 1; i < width - 1; i++)
 151         mvwaddch(win, y, i, ' ');
 152
 153     wchar_t *promptw = str_to_wchar (str);
 154     mvwprintw(win, y, CENTERX(width, promptw), "%ls", promptw);
 155     free (promptw);
 156     wattroff(win, attr);
 157 }