apps/player/keyboard.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2002 by Björn Stenberg
  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 "lcd.h"
  22 #include "button.h"
  23 #include "kernel.h"
  24 #include "system.h"
  25 #include "version.h"
  26 #include "sprintf.h"
  27 #include <string.h>
  28 #include "settings.h"
  29 #include "statusbar.h"
  30 #include "talk.h"
  31 #include "misc.h"
  32 #include "rbunicode.h"
  33 #include "lang.h"
  34 #include "keyboard.h"
  35
  36 #define KBD_BUF_SIZE  64
  37 #define KEYBOARD_PAGES 3
  38
  39 static unsigned short *kbd_setupkeys(int page, int* len)
  40 {
  41     static unsigned short kbdline[KBD_BUF_SIZE];
  42     const unsigned char *p;
  43     int i = 0;
  44
  45     switch (page)
  46     {
  47         case 0: /* Capitals */
  48             p = "ABCDEFGHIJKLMNOPQRSTUVWXYZÀÁÂÃÄÅ"
  49                 "ÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝ";
  50             break;
  51
  52         case 1: /* Small */
  53             p = "abcdefghijklmnopqrstuvwxyzßàáâãä"
  54                 "åçèéêëìíîïñòóôõöøùúûüýÿ";
  55             break;
  56
  57         default: /* Others */
  58             p = " !\"#$%&'()*+,-./0123456789:;<=>?@[]_{}~";
  59             break;
  60     }
  61
  62     while (*p)
  63         p = utf8decode(p, &kbdline[i++]);
  64
  65     *len = i;
  66
  67     return kbdline;
  68 }
  69
  70 /* Delimiters for highlighting the character selected for insertion */
  71 #define KEYBOARD_INSERT_LEFT 0xe110
  72 #define KEYBOARD_INSERT_RIGHT 0xe10f
  73
  74 #define KEYBOARD_CURSOR 0x7f
  75 #define KEYBOARD_ARROW 0xe10c
  76
  77 /* helper function to spell a char if voice UI is enabled */
  78 static void kbd_spellchar(unsigned short c)
  79 {
  80     if (global_settings.talk_menu) /* voice UI? */
  81     {
  82         unsigned char tmp[5];
  83         /* store char to pass to talk_spell */
  84         unsigned char* utf8 = utf8encode(c, tmp);
  85         *utf8 = 0;
  86
  87         if(c == ' ')
  88             talk_id(VOICE_BLANK, false);
  89         else
  90             talk_spell(tmp, false);
  91     }
  92 }
  93
  94 static void say_edit(void)
  95 {
  96     if (global_settings.talk_menu)
  97         talk_id(VOICE_EDIT, false);
  98 }
  99
 100 int kbd_input(char* text, int buflen)
 101 {
 102     bool done = false;
 103     bool redraw = true;
 104     bool line_edit = false;
 105     int page = 0, x = 0;
 106     int linelen;
 107
 108     int len, len_utf8, i, j;
 109     int editpos, curpos, leftpos;
 110     unsigned short *line = kbd_setupkeys(page, &linelen);
 111     unsigned char temptext[36];
 112     unsigned char *utf8;
 113
 114     int button, lastbutton = 0;
 115
 116     editpos = utf8length(text);
 117
 118     if (global_settings.talk_menu) /* voice UI? */
 119         talk_spell(text, true); /* spell initial text */
 120
 121     while (!done)
 122     {
 123         len = strlen(text);
 124         len_utf8 = utf8length(text);
 125
 126         if (redraw)
 127         {
 128             if (line_edit)
 129             {
 130                 lcd_putc(0, 0, ' ');
 131                 lcd_putc(0, 1, KEYBOARD_ARROW);
 132             }
 133             else
 134             {
 135                 lcd_putc(0, 0, KEYBOARD_ARROW);
 136                 lcd_putc(0, 1, ' ');
 137             }
 138
 139             lcd_putc(1, 0, KEYBOARD_INSERT_LEFT);
 140             lcd_putc(2, 0, line[x]);
 141             lcd_putc(3, 0, KEYBOARD_INSERT_RIGHT);
 142             for (i = 1; i < 8; i++)
 143             {
 144                 lcd_putc(i + 3, 0, line[(x+i)%linelen]);
 145             }
 146
 147             /* write out the text */
 148             curpos = MIN(MIN(editpos, 10 - MIN(len_utf8 - editpos, 3)), 9);
 149             leftpos = editpos - curpos;
 150             if (!leftpos) {
 151                 utf8 = text + utf8seek(text, leftpos);
 152                 i = 0;
 153                 j = 0;
 154             } else {
 155                 temptext[0] = '<';
 156                 i = 1;
 157                 j = 1;
 158                 utf8 = text + utf8seek(text, leftpos+1);
 159             }
 160             while (*utf8 && i < 10) {
 161                 temptext[j++] = *utf8++;
 162                 if ((*utf8 & MASK) != COMP)
 163                     i++;
 164             }
 165             temptext[j] = 0;
 166
 167
 168             if (len_utf8 - leftpos > 10) {
 169                 utf8 = temptext + utf8seek(temptext, 9);
 170                 *utf8++ = '>';
 171                 *utf8 = 0;
 172             }
 173
 174             lcd_remove_cursor();
 175             lcd_puts(1, 1, temptext);
 176             lcd_put_cursor(curpos + 1, 1, KEYBOARD_CURSOR);
 177
 178             gui_syncstatusbar_draw(&statusbars, true);
 179         }
 180
 181         /* The default action is to redraw */
 182         redraw = true;
 183
 184         button = button_get_w_tmo(HZ/2);
 185         switch (button)
 186         {
 187             case BUTTON_STOP:  /* abort */
 188                 return -1;
 189                 break;
 190
 191             case BUTTON_MENU:  /* page flip */
 192                 if (++page == KEYBOARD_PAGES)
 193                     page = 0;
 194                 line = kbd_setupkeys(page, &linelen);
 195                 if (x > linelen - 1)
 196                     x = linelen - 1;
 197                 kbd_spellchar(line[x]);
 198                 break;
 199
 200             case BUTTON_ON:    /* toggle mode */
 201                 line_edit = !line_edit;
 202                 if (line_edit)
 203                     say_edit();
 204                 else
 205                     kbd_spellchar(line[x]);
 206                 break;
 207
 208             case BUTTON_RIGHT:
 209             case BUTTON_RIGHT | BUTTON_REPEAT:
 210                 if (line_edit)
 211                 {
 212                     if (editpos < len_utf8)
 213                     {
 214                         editpos++;
 215                         int c = utf8seek(text, editpos);
 216                         kbd_spellchar(text[c]);
 217                     }
 218                 }
 219                 else
 220                 {
 221                     if (++x >= linelen)
 222                         x = 0;
 223                     kbd_spellchar(line[x]);
 224                 }
 225                 break;
 226
 227             case BUTTON_LEFT:
 228             case BUTTON_LEFT | BUTTON_REPEAT:
 229                 if (line_edit)
 230                 {
 231                     if (editpos)
 232                     {
 233                         editpos--;
 234                         int c = utf8seek(text, editpos);
 235                         kbd_spellchar(text[c]);
 236                     }
 237                 }
 238                 else
 239                 {
 240                     if (--x < 0)
 241                         x = linelen - 1;
 242                     kbd_spellchar(line[x]);
 243                 }
 244                 break;
 245
 246             case BUTTON_PLAY | BUTTON_REPEAT:
 247                 /* accepts what was entered and continues */
 248                 done = true;
 249                 break;
 250
 251             case BUTTON_PLAY | BUTTON_REL:
 252                 if (lastbutton != BUTTON_PLAY)
 253                     break;
 254                 if (line_edit) /* backspace in line_edit */
 255                 {
 256                     if (editpos > 0)
 257                     {
 258                         utf8 = text + utf8seek(text, editpos);
 259                         i = 0;
 260                         do {
 261                             i++;
 262                             utf8--;
 263                         } while ((*utf8 & MASK) == COMP);
 264                         while (utf8[i]) {
 265                             *utf8 = utf8[i];
 266                             utf8++;
 267                         }
 268                         *utf8 = 0;
 269                         editpos--;
 270                     }
 271                 }
 272                 else  /* inserts the selected char */
 273                 {
 274                     utf8 = utf8encode(line[x], temptext);
 275                     *utf8 = 0;
 276                     j = strlen(temptext);
 277                     if (len + j < buflen)
 278                     {
 279                         int k = len_utf8;
 280                         for (i = len+j; k >= editpos; i--) {
 281                             text[i] = text[i-j];
 282                             if ((text[i] & MASK) != COMP)
 283                                 k--;
 284                         }
 285                         while (j--)
 286                             text[i--] = temptext[j];
 287                         editpos++;
 288                     }
 289                 }
 290                 if (global_settings.talk_menu) /* voice UI? */
 291                     talk_spell(text, false); /* speak revised text */
 292                 break;
 293
 294             case BUTTON_NONE:
 295                 gui_syncstatusbar_draw(&statusbars, false);
 296                 redraw = false;
 297                 break;
 298
 299             default:
 300                 default_event_handler(button);
 301                 break;
 302         }
 303         if (button != BUTTON_NONE)
 304             lastbutton = button;
 305     }
 306
 307     return 0;
 308 }
 309