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