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 <string.h>
  27 #include "settings.h"
  28 #include "statusbar.h"
  29 #include "talk.h"
  30 #include "misc.h"
  31 #include "rbunicode.h"
  32 #include "lang.h"
  33 #include "keyboard.h"
  34 #include "splash.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     int ret = 0; /* assume success */
 116
 117     editpos = utf8length(text);
 118
 119     if (global_settings.talk_menu) /* voice UI? */
 120         talk_spell(text, true); /* spell initial text */
 121
 122     while (!done)
 123     {
 124         len = strlen(text);
 125         len_utf8 = utf8length(text);
 126
 127         if (redraw)
 128         {
 129             if (line_edit)
 130             {
 131                 lcd_putc(0, 0, ' ');
 132                 lcd_putc(0, 1, KEYBOARD_ARROW);
 133             }
 134             else
 135             {
 136                 lcd_putc(0, 0, KEYBOARD_ARROW);
 137                 lcd_putc(0, 1, ' ');
 138             }
 139
 140             lcd_putc(1, 0, KEYBOARD_INSERT_LEFT);
 141             lcd_putc(2, 0, line[x]);
 142             lcd_putc(3, 0, KEYBOARD_INSERT_RIGHT);
 143             for (i = 1; i < 8; i++)
 144             {
 145                 lcd_putc(i + 3, 0, line[(x+i)%linelen]);
 146             }
 147
 148             /* write out the text */
 149             curpos = MIN(MIN(editpos, 10 - MIN(len_utf8 - editpos, 3)), 9);
 150             leftpos = editpos - curpos;
 151             if (!leftpos) {
 152                 utf8 = text + utf8seek(text, leftpos);
 153                 i = 0;
 154                 j = 0;
 155             } else {
 156                 temptext[0] = '<';
 157                 i = 1;
 158                 j = 1;
 159                 utf8 = text + utf8seek(text, leftpos+1);
 160             }
 161             while (*utf8 && i < 10) {
 162                 temptext[j++] = *utf8++;
 163                 if ((*utf8 & MASK) != COMP)
 164                     i++;
 165             }
 166             temptext[j] = 0;
 167
 168
 169             if (len_utf8 - leftpos > 10) {
 170                 utf8 = temptext + utf8seek(temptext, 9);
 171                 *utf8++ = '>';
 172                 *utf8 = 0;
 173             }
 174
 175             lcd_remove_cursor();
 176             lcd_puts(1, 1, temptext);
 177             lcd_put_cursor(curpos + 1, 1, KEYBOARD_CURSOR);
 178
 179             gui_syncstatusbar_draw(&statusbars, true);
 180         }
 181
 182         /* The default action is to redraw */
 183         redraw = true;
 184
 185         button = button_get_w_tmo(HZ/2);
 186         switch (button)
 187         {
 188             case BUTTON_STOP:  /* abort */
 189                 ret = -1; done = true;
 190                 break;
 191
 192             case BUTTON_MENU:  /* page flip */
 193                 if (++page == KEYBOARD_PAGES)
 194                     page = 0;
 195                 line = kbd_setupkeys(page, &linelen);
 196                 if (x > linelen - 1)
 197                     x = linelen - 1;
 198                 kbd_spellchar(line[x]);
 199                 break;
 200
 201             case BUTTON_ON:    /* toggle mode */
 202                 line_edit = !line_edit;
 203                 if (line_edit)
 204                     say_edit();
 205                 else
 206                     kbd_spellchar(line[x]);
 207                 break;
 208
 209             case BUTTON_RIGHT:
 210             case BUTTON_RIGHT | BUTTON_REPEAT:
 211                 if (line_edit)
 212                 {
 213                     if (editpos < len_utf8)
 214                     {
 215                         editpos++;
 216                         int c = utf8seek(text, editpos);
 217                         kbd_spellchar(text[c]);
 218                     }
 219                 }
 220                 else
 221                 {
 222                     if (++x >= linelen)
 223                         x = 0;
 224                     kbd_spellchar(line[x]);
 225                 }
 226                 break;
 227
 228             case BUTTON_LEFT:
 229             case BUTTON_LEFT | BUTTON_REPEAT:
 230                 if (line_edit)
 231                 {
 232                     if (editpos)
 233                     {
 234                         editpos--;
 235                         int c = utf8seek(text, editpos);
 236                         kbd_spellchar(text[c]);
 237                     }
 238                 }
 239                 else
 240                 {
 241                     if (--x < 0)
 242                         x = linelen - 1;
 243                     kbd_spellchar(line[x]);
 244                 }
 245                 break;
 246
 247             case BUTTON_PLAY | BUTTON_REPEAT:
 248                 /* accepts what was entered and continues */
 249                 ret = 0; done = true;
 250                 break;
 251
 252             case BUTTON_PLAY | BUTTON_REL:
 253                 if (lastbutton != BUTTON_PLAY)
 254                     break;
 255                 if (line_edit) /* backspace in line_edit */
 256                 {
 257                     if (editpos > 0)
 258                     {
 259                         utf8 = text + utf8seek(text, editpos);
 260                         i = 0;
 261                         do {
 262                             i++;
 263                             utf8--;
 264                         } while ((*utf8 & MASK) == COMP);
 265                         while (utf8[i]) {
 266                             *utf8 = utf8[i];
 267                             utf8++;
 268                         }
 269                         *utf8 = 0;
 270                         editpos--;
 271                     }
 272                 }
 273                 else  /* inserts the selected char */
 274                 {
 275                     utf8 = utf8encode(line[x], temptext);
 276                     *utf8 = 0;
 277                     j = strlen(temptext);
 278                     if (len + j < buflen)
 279                     {
 280                         int k = len_utf8;
 281                         for (i = len+j; k >= editpos; i--) {
 282                             text[i] = text[i-j];
 283                             if ((text[i] & MASK) != COMP)
 284                                 k--;
 285                         }
 286                         while (j--)
 287                             text[i--] = temptext[j];
 288                         editpos++;
 289                     }
 290                 }
 291                 if (global_settings.talk_menu) /* voice UI? */
 292                     talk_spell(text, false); /* speak revised text */
 293                 break;
 294
 295             case BUTTON_NONE:
 296                 gui_syncstatusbar_draw(&statusbars, false);
 297                 redraw = false;
 298                 break;
 299
 300             default:
 301                 default_event_handler(button);
 302                 break;
 303         }
 304         if (button != BUTTON_NONE)
 305             lastbutton = button;
 306     }
 307
 308     if (ret < 0)
 309         splash(HZ/2, ID2P(LANG_CANCEL));
 310     return ret;
 311 }
 312