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  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include "config.h"
  22 #include "yesno.h"
  23 #include "system.h"
  24 #include "kernel.h"
  25 #include "misc.h"
  26 #include "lang.h"
  27 #include "action.h"
  28 #include "talk.h"
  29 #include "settings.h"
  30 #include "viewport.h"
  31
  32
  33 struct gui_yesno
  34 {
  35     const struct text_message * main_message;
  36     const struct text_message * result_message[2];
  37
  38     struct viewport *vp;
  39     struct screen * display;
  40 };
  41
  42 static void talk_text_message(const struct text_message * message, bool enqueue)
  43 {
  44     int line;
  45     if(message)
  46     {
  47         for(line=0; line<message->nb_lines; line++)
  48         {
  49             long id = P2ID((unsigned char *)message->message_lines[line]);
  50             if(id>=0)
  51             {
  52                 talk_id(id, enqueue);
  53                 enqueue = true;
  54             }
  55         }
  56     }
  57 }
  58
  59 static int put_message(struct screen *display,
  60                         const struct text_message * message,
  61                         int start, int max_y)
  62 {
  63     int i;
  64     for(i=0; i<message->nb_lines && i+start<max_y; i++)
  65     {
  66         display->puts_scroll(0, i+start,
  67                              P2STR((unsigned char *)message->message_lines[i]));
  68     }
  69     return i;
  70 }
  71
  72 /*
  73  * Draws the yesno
  74  *  - yn : the yesno structure
  75  */
  76 static void gui_yesno_draw(struct gui_yesno * yn)
  77 {
  78     struct screen * display=yn->display;
  79     struct viewport *vp = yn->vp;
  80     int nb_lines, vp_lines, line_shift=0;
  81
  82     display->set_viewport(vp);
  83     display->clear_viewport();
  84     nb_lines = yn->main_message->nb_lines;
  85     vp_lines = viewport_get_nb_lines(vp);
  86
  87     if(nb_lines+3< vp_lines)
  88         line_shift=1;
  89
  90     line_shift += put_message(display, yn->main_message,
  91                               line_shift, vp_lines);
  92 #ifdef HAVE_TOUCHSCREEN
  93     if (display->screen_type == SCREEN_MAIN)
  94     {
  95         int w,h;
  96         int rect_w = vp->width/2, rect_h = vp->height/2;
  97         int old_pattern = vp->fg_pattern;
  98         vp->fg_pattern = LCD_RGBPACK(0,255,0);
  99         display->drawrect(0, rect_h, rect_w, rect_h);
 100         display->getstringsize(str(LANG_SET_BOOL_YES), &w, &h);
 101         display->putsxy((rect_w-w)/2, rect_h+(rect_h-h)/2, str(LANG_SET_BOOL_YES));
 102         vp->fg_pattern = LCD_RGBPACK(255,0,0);
 103         display->drawrect(rect_w, rect_h, rect_w, rect_h);
 104         display->getstringsize(str(LANG_SET_BOOL_NO), &w, &h);
 105         display->putsxy(rect_w + (rect_w-w)/2, rect_h+(rect_h-h)/2, str(LANG_SET_BOOL_NO));
 106         vp->fg_pattern = old_pattern;
 107     }
 108 #else
 109     /* Space remaining for yes / no text ? */
 110     if(line_shift+2 <= vp_lines)
 111     {
 112         if(line_shift+3 <= vp_lines)
 113             line_shift++;
 114         display->puts(0, line_shift, str(LANG_CONFIRM_WITH_BUTTON));
 115 #ifdef HAVE_LCD_BITMAP
 116         display->puts(0, line_shift+1, str(LANG_CANCEL_WITH_ANY));
 117 #endif
 118     }
 119 #endif
 120     display->update_viewport();
 121     display->set_viewport(NULL);
 122 }
 123
 124 /*
 125  * Draws the yesno result
 126  *  - yn : the yesno structure
 127  *  - result : the result tha must be displayed :
 128  *    YESNO_NO if no
 129  *    YESNO_YES if yes
 130  */
 131 static bool gui_yesno_draw_result(struct gui_yesno * yn, enum yesno_res result)
 132 {
 133     const struct text_message * message=yn->result_message[result];
 134     struct viewport *vp = yn->vp;
 135     struct screen * display=yn->display;
 136     if(message==NULL)
 137         return false;
 138     display->set_viewport(vp);
 139     display->clear_viewport();
 140     put_message(yn->display, message, 0, viewport_get_nb_lines(vp));
 141     display->update_viewport();
 142     display->set_viewport(NULL);
 143     return(true);
 144 }
 145
 146 enum yesno_res gui_syncyesno_run(const struct text_message * main_message,
 147                                  const struct text_message * yes_message,
 148                                  const struct text_message * no_message)
 149 {
 150     int button;
 151     int result=-1;
 152     bool result_displayed;
 153     struct gui_yesno yn[NB_SCREENS];
 154     struct viewport vp[NB_SCREENS];
 155     long talked_tick = 0;
 156     FOR_NB_SCREENS(i)
 157     {
 158         yn[i].main_message=main_message;
 159         yn[i].result_message[YESNO_YES]=yes_message;
 160         yn[i].result_message[YESNO_NO]=no_message;
 161         yn[i].display=&screens[i];
 162         yn[i].vp = &vp[i];
 163 #ifdef HAVE_LCD_CHARCELLS
 164         /* Quick fix. Viewports should really be enabled proper for charcell */
 165         viewport_set_defaults(yn[i].vp, i);
 166 #else
 167         viewportmanager_theme_enable(i, true, yn[i].vp);
 168 #endif
 169         screens[i].stop_scroll();
 170         gui_yesno_draw(&(yn[i]));
 171     }
 172     /* make sure to eat any extranous keypresses */
 173     while (get_action(CONTEXT_STD+99, TIMEOUT_NOBLOCK))
 174         action_wait_for_release();
 175     while (result==-1)
 176     {
 177         /* Repeat the question every 5secs (more or less) */
 178         if (global_settings.talk_menu
 179             && (talked_tick==0 || TIME_AFTER(current_tick, talked_tick+HZ*5)))
 180         {
 181             talked_tick = current_tick;
 182             talk_text_message(main_message, false);
 183         }
 184         button = get_action(CONTEXT_YESNOSCREEN, HZ*5);
 185         switch (button)
 186         {
 187 #ifdef HAVE_TOUCHSCREEN
 188             case ACTION_TOUCHSCREEN:
 189                 {
 190                     short int x, y;
 191                     if (action_get_touchscreen_press_in_vp(&x, &y, yn[0].vp) == BUTTON_TOUCHSCREEN)
 192                     {
 193                         if (y > yn[0].vp->height/2)
 194                         {
 195                             if (x <= yn[0].vp->width/2)
 196                                 result = YESNO_YES;
 197                             else
 198                                 result = YESNO_NO;
 199                         }
 200                     }
 201                 }
 202                 break;
 203 #endif
 204             case ACTION_YESNO_ACCEPT:
 205                 result=YESNO_YES;
 206                 break;
 207             case ACTION_NONE:
 208             case SYS_CHARGER_DISCONNECTED:
 209             case SYS_BATTERY_UPDATE:
 210                 /* ignore some SYS events that can happen */
 211                 continue;
 212             default:
 213                 if(default_event_handler(button) == SYS_USB_CONNECTED)
 214                     return(YESNO_USB);
 215                 result = YESNO_NO;
 216         }
 217     }
 218
 219     FOR_NB_SCREENS(i)
 220         result_displayed=gui_yesno_draw_result(&(yn[i]), result);
 221
 222     if (global_settings.talk_menu)
 223     {
 224         talk_text_message((result == YESNO_YES) ? yes_message
 225                           : no_message, false);
 226         talk_force_enqueue_next();
 227     }
 228     if(result_displayed)
 229         sleep(HZ);
 230
 231     FOR_NB_SCREENS(i)
 232     {
 233         screens[i].scroll_stop(yn[i].vp);
 234         viewportmanager_theme_undo(i, true);
 235     }
 236     return(result);
 237 }
 238
 239
 240 /* Function to manipulate all yesno dialogues.
 241    This function needs the output text as an argument. */
 242 bool yesno_pop(const char* text)
 243 {
 244     const char *lines[]={text};
 245     const struct text_message message={lines, 1};
 246     bool ret = (gui_syncyesno_run(&message,NULL,NULL)== YESNO_YES);
 247     FOR_NB_SCREENS(i)
 248         screens[i].clear_viewport();
 249     return ret;
 250 }