apps/gui/option_select.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2005 by Kevin Ferrare
  11  *
  12  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19
  20 #include "option_select.h"
  21 #include "sprintf.h"
  22 #include "kernel.h"
  23 #include "lang.h"
  24
  25 void option_select_init_items(struct option_select * opt,
  26                               const char * title,
  27                               int selected,
  28                               const struct opt_items * items,
  29                               int nb_items)
  30 {
  31     opt->title=title;
  32     opt->min_value=0;
  33     opt->max_value=nb_items;
  34     opt->option=selected;
  35     opt->items=items;
  36 }
  37
  38 void option_select_next(struct option_select * opt)
  39 {
  40     if(opt->option + 1 >= opt->max_value)
  41     {
  42             if(opt->option==opt->max_value-1)
  43                 opt->option=opt->min_value;
  44             else
  45                 opt->option=opt->max_value-1;
  46     }
  47     else
  48         opt->option+=1;
  49 }
  50
  51 void option_select_prev(struct option_select * opt)
  52 {
  53     if(opt->option - 1 < opt->min_value)
  54     {
  55         /* the dissimilarity to option_select_next() arises from the
  56          * sleep timer problem (bug #5000 and #5001):
  57          * there we have min=0, step = 5 but the value itself might
  58          * not be a multiple of 5 -- as time elapsed;
  59          * We need to be able to set timer to 0 (= Off) nevertheless. */
  60         if(opt->option!=opt->min_value)
  61             opt->option=opt->min_value;
  62         else
  63             opt->option=opt->max_value-1;
  64     }
  65     else
  66         opt->option-=1;
  67 }
  68
  69 const char * option_select_get_text(struct option_select * opt/*, char * buffer,
  70                                     int buffersize*/)
  71 {
  72         return(P2STR(opt->items[opt->option].string));
  73 }