apps/gui/yesno.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 "yesno.h"
  21 #include "system.h"
  22 #include "kernel.h"
  23 #include "misc.h"
  24 #include "lang.h"
  25 #include "action.h"
  26
  27 /*
  28  * Initializes the yesno asker
  29  *  - yn : the yesno structure
  30  *  - main_message : the question the user has to answer
  31  *  - yes_message : message displayed if answer is 'yes'
  32  *  - no_message : message displayed if answer is 'no'
  33  */
  34 static void gui_yesno_init(struct gui_yesno * yn,
  35                     struct text_message * main_message,
  36                     struct text_message * yes_message,
  37                     struct text_message * no_message)
  38 {
  39     yn->main_message=main_message;
  40     yn->result_message[YESNO_YES]=yes_message;
  41     yn->result_message[YESNO_NO]=no_message;
  42     yn->display=0;
  43 }
  44
  45 /*
  46  * Attach the yesno to a screen
  47  *  - yn : the yesno structure
  48  *  - display : the screen to attach
  49  */
  50 static void gui_yesno_set_display(struct gui_yesno * yn,
  51                            struct screen * display)
  52 {
  53     yn->display=display;
  54 }
  55
  56 /*
  57  * Draws the yesno
  58  *  - yn : the yesno structure
  59  */
  60 static void gui_yesno_draw(struct gui_yesno * yn)
  61 {
  62     struct screen * display=yn->display;
  63     int nb_lines, line_shift=0;
  64
  65     gui_textarea_clear(display);
  66     nb_lines=yn->main_message->nb_lines;
  67
  68     if(nb_lines+3<display->nb_lines)
  69         line_shift=1;
  70     nb_lines=gui_textarea_put_message(display, yn->main_message, line_shift);
  71
  72     /* Space remaining for yes / no text ? */
  73     if(nb_lines+line_shift+2<=display->nb_lines)
  74     {
  75         if(nb_lines+line_shift+3<=display->nb_lines)
  76             nb_lines++;
  77         display->puts(0, nb_lines+line_shift, str(LANG_CONFIRM_WITH_PLAY_RECORDER));
  78         display->puts(0, nb_lines+line_shift+1, str(LANG_CANCEL_WITH_ANY_RECORDER));
  79     }
  80     gui_textarea_update(display);
  81 }
  82
  83 /*
  84  * Draws the yesno result
  85  *  - yn : the yesno structure
  86  *  - result : the result tha must be displayed :
  87  *    YESNO_NO if no
  88  *    YESNO_YES if yes
  89  */
  90 static bool gui_yesno_draw_result(struct gui_yesno * yn, enum yesno_res result)
  91 {
  92     struct text_message * message=yn->result_message[result];
  93     if(message==NULL)
  94         return false;
  95     gui_textarea_put_message(yn->display, message, 0);
  96     return(true);
  97 }
  98 #include "debug.h"
  99 enum yesno_res gui_syncyesno_run(struct text_message * main_message,
 100                                  struct text_message * yes_message,
 101                                  struct text_message * no_message)
 102 {
 103     int i;
 104     unsigned button;
 105     int result=-1;
 106     bool result_displayed;
 107     struct gui_yesno yn[NB_SCREENS];
 108     FOR_NB_SCREENS(i)
 109     {
 110         gui_yesno_init(&(yn[i]), main_message, yes_message, no_message);
 111         gui_yesno_set_display(&(yn[i]), &(screens[i]));
 112         gui_yesno_draw(&(yn[i]));
 113     }
 114     while (result==-1)
 115     {
 116         button = get_action(CONTEXT_YESNOSCREEN,TIMEOUT_BLOCK);
 117         switch (button)
 118         {
 119             case ACTION_YESNO_ACCEPT:
 120                 result=YESNO_YES;
 121                 break;
 122             case ACTION_NONE:
 123             case SYS_CHARGER_DISCONNECTED:
 124                 /* ignore some SYS events that can happen */
 125                 continue;
 126             default:
 127                 if(default_event_handler(button) == SYS_USB_CONNECTED)
 128                     return(YESNO_USB);
 129                 result = YESNO_NO;
 130         }
 131     }
 132     FOR_NB_SCREENS(i)
 133         result_displayed=gui_yesno_draw_result(&(yn[i]), result);
 134     if(result_displayed)
 135         sleep(HZ);
 136     return(result);
 137 }