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