firmware/export/lcd-charcell.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 by Jens Arnold
  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
  22 #include "config.h"
  23
  24 /* target dependent - to be adjusted for other charcell targets */
  25 #define HW_PATTERN_SIZE 7  /* number of bytes per pattern */
  26 #define MAX_HW_PATTERNS 8  /* max. number of user-definable hw patterns */
  27
  28 struct cursor_info {
  29     unsigned char hw_char;
  30     unsigned char subst_char;
  31     bool enabled;
  32     bool visible;
  33     int x;
  34     int y;
  35     int divider;
  36     int downcount;
  37 };
  38
  39 /* map unicode characters to hardware or extended lcd characters */
  40 struct xchar_info {
  41     unsigned short ucs;
  42     unsigned short glyph;
  43     /* 0x0000..0x7fff: fixed extended characters
  44      * 0x8000..0xffff: variable extended characters
  45      * Dontcare if priority == 0 */
  46     unsigned char priority;
  47     unsigned char hw_char;    /* direct or substitute */
  48 };
  49
  50 /* track usage of user-definable characters */
  51 struct pattern_info {
  52     short count;
  53     unsigned short glyph;
  54     unsigned char priority;
  55     unsigned char pattern[HW_PATTERN_SIZE];
  56 };
  57
  58 extern int lcd_pattern_count;  /* actual number of user-definable hw patterns */
  59
  60 extern unsigned char lcd_charbuffer[LCD_HEIGHT][LCD_WIDTH];
  61 extern struct pattern_info lcd_patterns[MAX_HW_PATTERNS];
  62 extern struct cursor_info lcd_cursor;
  63
  64 extern const struct xchar_info *xchar_info;
  65 extern int xchar_info_size;      /* number of entries */
  66 extern const unsigned char xfont_fixed[][HW_PATTERN_SIZE];
  67
  68 void lcd_charset_init(void);
  69