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