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  * 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
  20 #include "config.h"
  21
  22 /* target dependent - to be adjusted for other charcell targets */
  23 #define HW_PATTERN_SIZE 7  /* number of bytes per pattern */
  24 #define MAX_HW_PATTERNS 8  /* max. number of user-definable hw patterns */
  25
  26 struct cursor_info {
  27     unsigned char hw_char;
  28     unsigned char subst_char;
  29     bool enabled;
  30     bool visible;
  31     int x;
  32     int y;
  33     int divider;
  34     int downcount;
  35 };
  36
  37 /* map unicode characters to hardware or extended lcd characters */
  38 struct xchar_info {
  39     unsigned short ucs;
  40     unsigned short glyph;
  41     /* 0x0000..0x7fff: fixed extended characters
  42      * 0x8000..0xffff: variable extended characters
  43      * Dontcare if priority == 0 */
  44     unsigned char priority;
  45     unsigned char hw_char;    /* direct or substitute */
  46 };
  47
  48 /* track usage of user-definable characters */
  49 struct pattern_info {
  50     short count;
  51     unsigned short glyph;
  52     unsigned char priority;
  53     unsigned char pattern[HW_PATTERN_SIZE];
  54 };
  55
  56 extern int lcd_pattern_count;  /* actual number of user-definable hw patterns */
  57
  58 extern unsigned char lcd_charbuffer[LCD_HEIGHT][LCD_WIDTH];
  59 extern struct pattern_info lcd_patterns[MAX_HW_PATTERNS];
  60 extern struct cursor_info lcd_cursor;
  61
  62 extern const struct xchar_info *xchar_info;
  63 extern int xchar_info_size;      /* number of entries */
  64 extern const unsigned char xfont_fixed[][HW_PATTERN_SIZE];
  65
  66 void lcd_charset_init(void);
  67