matrixdisplaydriver.cpp

/***************************************************************************
 *   Copyright (C) 2005 by David Saxton                                    *
 *   david@bluehaze.org                                                    *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 ***************************************************************************/

#include "libraryitem.h"
#include "logic.h"
#include "matrixdisplaydriver.h"

#include <klocale.h>
#include <qpainter.h>
#include <qstring.h>

#include <cassert>

// Thank you Scott Dattalo!
// http://www.dattalo.com/gnupic/lcdfont.inc

//  code; decimal; hex; codepage 437
// not all codes implemented
// After further investigation, the higher codes correspond to japanese katakana
// letters. this is getting intesting.

// TODO: identify the code page that is actually implemented then make sure it is
// correct or fill it in with page 437 codes.
// Otherwise, implement multiple codepages and let user select at runtime. 

static char characterMap[256][5] = {
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //0   0x00    NULL
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //1   0x01  [white happy face]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //2   0x02  [black happy face]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //3   0x03  [heart]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //4   0x04  [daimond] 
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //5   0x05  [club]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //6   0x06  [spade] 
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //7   0x07  [dot]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //8   0x08  [inverted dot]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //9   0x09  [circle] 
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //10  0x0A  [inverted circle]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //11  0x0B  [mars symbol]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //12  0x0C  [venus symbol]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //13  0x0D  [note]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //14  0x0E  [double note]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //15  0x0F  [sun]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //16  0x10  [play/ right pointing triangle]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //17  0x11  [left pointing triangle]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //18  0x12  [up-down arrow]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //19  0x13    !!
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //20  0x14  [paragraph symbol]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //21  0x15  [chapter symbol]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //22  0x16  [bar]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //23  0x17  [up-down arrow with underline]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //24  0x18  [up arrow]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //25  0x19  [down arrow]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //26  0x1A  [right arrow]     
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //27  0x1B  [left arrow]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //28  0x1C
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //29  0x1D  [left-right arrow]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //30  0x1E  [up triangle]     
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //31  0x1F  [down triangle]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //32  0x20  [space]
{ 0x00, 0x00, 0x7d, 0x00, 0x00 }, //33  0x21    !
{ 0x00, 0x70, 0x00, 0x70, 0x00 }, //34  0x22    "
{ 0x14, 0x7f, 0x14, 0x7f, 0x14 }, //35  0x23    #
{ 0x12, 0x2a, 0x7f, 0x2a, 0x24 }, //36  0x24    $
{ 0x62, 0x64, 0x08, 0x13, 0x23 }, //37  0x25    %
{ 0x36, 0x49, 0x55, 0x22, 0x05 }, //38  0x26    &
{ 0x00, 0x50, 0x60, 0x00, 0x00 }, //39  0x27    '
{ 0x00, 0x1c, 0x22, 0x41, 0x00 }, //40  0x28    (
{ 0x00, 0x41, 0x22, 0x1c, 0x00 }, //41  0x29    )
{ 0x14, 0x08, 0x3e, 0x08, 0x14 }, //42  0x2A    *
{ 0x08, 0x08, 0x3e, 0x08, 0x08 }, //43  0x2B    +
{ 0x00, 0x05, 0x06, 0x00, 0x00 }, //44  0x2C    ,
{ 0x08, 0x08, 0x08, 0x08, 0x08 }, //45  0x2D    -
{ 0x00, 0x03, 0x03, 0x00, 0x00 }, //46  0x2E    .
{ 0x02, 0x04, 0x08, 0x10, 0x20 }, //47  0x2F    /
{ 0x3e, 0x45, 0x49, 0x51, 0x3e }, //48  0x30    0
{ 0x00, 0x21, 0x7f, 0x01, 0x00 }, //49  0x31    1
{ 0x21, 0x43, 0x45, 0x49, 0x31 }, //50  0x32    2
{ 0x42, 0x41, 0x51, 0x69, 0x46 }, //51  0x33    3
{ 0x0c, 0x14, 0x24, 0x7f, 0x04 }, //52  0x34    4
{ 0x72, 0x51, 0x51, 0x51, 0x4e }, //53  0x35    5
{ 0x1e, 0x29, 0x49, 0x49, 0x06 }, //54  0x36    6
{ 0x40, 0x47, 0x48, 0x50, 0x60 }, //55  0x37    7
{ 0x36, 0x49, 0x49, 0x49, 0x36 }, //56  0x38    8
{ 0x30, 0x49, 0x49, 0x4a, 0x3c }, //57  0x39    9
{ 0x00, 0x36, 0x36, 0x00, 0x00 }, //58  0x3A    :
{ 0x00, 0x35, 0x36, 0x00, 0x00 }, //59  0x3B    ;
{ 0x08, 0x14, 0x22, 0x41, 0x00 }, //60  0x3C    <
{ 0x14, 0x14, 0x14, 0x14, 0x14 }, //61  0x3D    =
{ 0x41, 0x22, 0x14, 0x08, 0x00 }, //62  0x3E    >
{ 0x20, 0x40, 0x45, 0x48, 0x30 }, //63  0x3F    ?
{ 0x26, 0x49, 0x4f, 0x41, 0x3e }, //64  0x40    @
{ 0x3f, 0x44, 0x44, 0x44, 0x3f }, //65  0x41    A
{ 0x7f, 0x49, 0x49, 0x49, 0x36 }, //66  0x42    B
{ 0x3e, 0x41, 0x41, 0x41, 0x22 }, //67  0x43    C
{ 0x7f, 0x41, 0x41, 0x41, 0x3e }, //68  0x44    D
{ 0x7f, 0x49, 0x49, 0x49, 0x41 }, //69  0x45    E
{ 0x7f, 0x48, 0x48, 0x48, 0x40 }, //70  0x46    F
{ 0x3e, 0x41, 0x49, 0x49, 0x2f }, //71  0x47    G
{ 0x7f, 0x08, 0x08, 0x08, 0x7f }, //72  0x48    H
{ 0x00, 0x41, 0x7f, 0x41, 0x00 }, //73  0x49    I
{ 0x02, 0x01, 0x41, 0x7e, 0x40 }, //74  0x4A    J
{ 0x7f, 0x08, 0x14, 0x22, 0x41 }, //75  0x4B    K
{ 0x7f, 0x01, 0x01, 0x01, 0x01 }, //76  0x4C    L
{ 0x7f, 0x40, 0x20, 0x40, 0x7f }, //77  0x4D    M
{ 0x7f, 0x10, 0x08, 0x04, 0x7f }, //78  0x4E    N
{ 0x3e, 0x41, 0x41, 0x41, 0x3e }, //79  0x4F    O
{ 0x7f, 0x48, 0x48, 0x48, 0x30 }, //80  0x50    P
{ 0x3e, 0x41, 0x45, 0x42, 0x3d }, //81  0x51    Q
{ 0x7f, 0x48, 0x4c, 0x4a, 0x31 }, //82  0x52    R
{ 0x31, 0x49, 0x49, 0x49, 0x46 }, //83  0x53    S
{ 0x40, 0x40, 0x7f, 0x40, 0x40 }, //84  0x54    T
{ 0x7e, 0x01, 0x01, 0x01, 0x7e }, //85  0x55    U
{ 0x7c, 0x02, 0x01, 0x02, 0x7c }, //86  0x56    V
{ 0x7e, 0x01, 0x0e, 0x01, 0x7e }, //87  0x57    W
{ 0x63, 0x14, 0x08, 0x14, 0x63 }, //88  0x58    X
{ 0x70, 0x08, 0x07, 0x08, 0x70 }, //89  0x59    Y
{ 0x43, 0x45, 0x49, 0x51, 0x61 }, //90  0x5A    Z
{ 0x00, 0x7f, 0x41, 0x41, 0x00 }, //91  0x5B    [
{ 0x54, 0x34, 0x1f, 0x34, 0x54 }, //92  0x5C    \
{ 0x00, 0x41, 0x41, 0x7f, 0x00 }, //93  0x5D    ]
{ 0x10, 0x20, 0x40, 0x20, 0x10 }, //94  0x5E    ^
{ 0x01, 0x01, 0x01, 0x01, 0x01 }, //95  0x5F    `
{ 0x00, 0x40, 0x20, 0x10, 0x00 }, //96  0x60    a
{ 0x02, 0x15, 0x15, 0x15, 0x0f }, //97  0x61    b
{ 0x7f, 0x09, 0x11, 0x11, 0x0e }, //98  0x62    c
{ 0x0e, 0x11, 0x11, 0x11, 0x02 }, //99  0x63    d
{ 0x0e, 0x11, 0x11, 0x09, 0x7f }, //100 0x64    e
{ 0x0e, 0x15, 0x15, 0x15, 0x0c }, //101 0x65    f
{ 0x08, 0x3f, 0x48, 0x40, 0x20 }, //102 0x66    g
{ 0x30, 0x49, 0x49, 0x49, 0x7e }, //103 0x67    h
{ 0x7f, 0x08, 0x10, 0x10, 0x0f }, //104 0x68    i
{ 0x00, 0x11, 0x5f, 0x01, 0x00 }, //105 0x69    j
{ 0x02, 0x01, 0x21, 0x7e, 0x00 }, //106 0x6A    k
{ 0x7f, 0x04, 0x0a, 0x11, 0x00 }, //107 0x6B    l
{ 0x00, 0x41, 0x7f, 0x01, 0x00 }, //108 0x6C    m
{ 0x1f, 0x10, 0x0c, 0x10, 0x0f }, //109 0x6D    n
{ 0x1f, 0x08, 0x10, 0x10, 0x0f }, //110 0x6E    o
{ 0x0e, 0x11, 0x11, 0x11, 0x0e }, //111 0x6F    p
{ 0x1f, 0x14, 0x14, 0x14, 0x08 }, //112 0x70    q
{ 0x08, 0x14, 0x14, 0x0c, 0x1f }, //113 0x71    r
{ 0x1f, 0x08, 0x10, 0x10, 0x08 }, //114 0x72    s
{ 0x09, 0x15, 0x15, 0x15, 0x12 }, //115 0x73    t
{ 0x20, 0x7e, 0x21, 0x01, 0x02 }, //116 0x74    u
{ 0x1e, 0x01, 0x01, 0x02, 0x1f }, //117 0x75    v
{ 0x1c, 0x02, 0x01, 0x02, 0x1c }, //118 0x76    w
{ 0x1e, 0x01, 0x06, 0x01, 0x1e }, //119 0x77    x
{ 0x11, 0x0a, 0x04, 0x0a, 0x11 }, //120 0x78    y
{ 0x18, 0x05, 0x05, 0x05, 0x1e }, //121 0x79    z
{ 0x11, 0x13, 0x15, 0x19, 0x11 }, //122 0x7A    {
{ 0x00, 0x08, 0x36, 0x41, 0x00 }, //123 0x7B    |
{ 0x00, 0x00, 0x7f, 0x00, 0x00 }, //124 0x7C    }
{ 0x00, 0x41, 0x36, 0x08, 0x00 }, //125 0x7D    ~
{ 0x08, 0x08, 0x2a, 0x1c, 0x08 }, //126 0x7E
{ 0x08, 0x1c, 0x2a, 0x08, 0x08 }, //127 0x7F
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //128 0x80
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //129 0x81
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //130 0x82
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //131 0x83
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //132 0x84
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //133 0x85
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //134 0x86
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //135 0x87
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //136 0x88
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //137 0x89
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //138 0x8A
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //139 0x8B
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //140 0x8C
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //141 0x8D
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //142 0x8E
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //143 0x8F
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //144 0x90
{ 0x07, 0x05, 0x07, 0x00, 0x00 }, //145 0x91    ae
{ 0x00, 0x00, 0x78, 0x40, 0x40 }, //146 0x92    AE
{ 0x01, 0x01, 0x0f, 0x00, 0x00 }, //147 0x93
{ 0x04, 0x02, 0x01, 0x00, 0x00 }, //148 0x94
{ 0x00, 0x0c, 0x0c, 0x00, 0x00 }, //149 0x95
{ 0x28, 0x28, 0x29, 0x2a, 0x3c }, //150 0x96
{ 0x10, 0x11, 0x16, 0x14, 0x18 }, //151 0x97
{ 0x02, 0x04, 0x0f, 0x10, 0x00 }, //152 0x98
{ 0x0c, 0x08, 0x19, 0x09, 0x0e }, //153 0x99
{ 0x09, 0x09, 0x0f, 0x09, 0x09 }, //154 0x9A
{ 0x09, 0x0a, 0x0c, 0x1f, 0x08 }, //155 0x9B    [cents]
{ 0x08, 0x1f, 0x08, 0x0a, 0x0c }, //156 0x9C    [pounds]
{ 0x01, 0x09, 0x09, 0x0f, 0x01 }, //157 0x9D    [yen]
{ 0x15, 0x15, 0x15, 0x1f, 0x00 }, //158 0x9E    
{ 0x0c, 0x00, 0x0d, 0x01, 0x0e }, //159 0x9F    [function]
{ 0x04, 0x04, 0x04, 0x04, 0x04 }, //160 0xA0    
{ 0x40, 0x41, 0x5e, 0x48, 0x70 }, //161 0xA1
{ 0x04, 0x08, 0x1f, 0x20, 0x40 }, //162 0xA2
{ 0x38, 0x20, 0x61, 0x22, 0x3c }, //163 0xA3
{ 0x11, 0x11, 0x1f, 0x11, 0x11 }, //164 0xA4
{ 0x22, 0x24, 0x28, 0x7f, 0x20 }, //165 0xA5
{ 0x21, 0x7e, 0x20, 0x21, 0x3e }, //166 0xA6
{ 0x28, 0x28, 0x7f, 0x28, 0x28 }, //167 0xA7
{ 0x08, 0x31, 0x21, 0x22, 0x3c }, //168 0xA8    upside down ?
{ 0x10, 0x60, 0x21, 0x3e, 0x20 }, //169 0xA9
{ 0x21, 0x21, 0x21, 0x21, 0x3f }, //170 0xAA
{ 0x20, 0x79, 0x22, 0x7c, 0x20 }, //171 0xAB    1/2
{ 0x29, 0x29, 0x01, 0x02, 0x1c }, //172 0xAC    1/4
{ 0x21, 0x22, 0x24, 0x2a, 0x31 }, //173 0xAD    
{ 0x20, 0x7e, 0x21, 0x29, 0x31 }, //174 0xAE    <<
{ 0x30, 0x09, 0x01, 0x02, 0x3c }, //175 0xAF    >>
{ 0x08, 0x31, 0x29, 0x26, 0x3c }, //176 0xB0
{ 0x28, 0x29, 0x3e, 0x48, 0x08 }, //177 0xB1
{ 0x30, 0x00, 0x31, 0x02, 0x3c }, //178 0xB2
{ 0x10, 0x51, 0x5e, 0x50, 0x10 }, //179 0xB3
{ 0x00, 0x7f, 0x08, 0x04, 0x00 }, //180 0xB4
{ 0x11, 0x12, 0x7c, 0x10, 0x10 }, //181 0xB5
{ 0x01, 0x21, 0x21, 0x21, 0x01 }, //182 0xB6
{ 0x21, 0x2a, 0x24, 0x2a, 0x30 }, //183 0xB7
{ 0x22, 0x24, 0x6f, 0x34, 0x22 }, //184 0xB8
{ 0x00, 0x01, 0x02, 0x7c, 0x00 }, //185 0xB9
{ 0x0f, 0x00, 0x20, 0x10, 0x0f }, //186 0xBA
{ 0x7e, 0x11, 0x11, 0x11, 0x11 }, //187 0xBB
{ 0x20, 0x21, 0x21, 0x22, 0x3c }, //188 0xBC
{ 0x10, 0x20, 0x10, 0x08, 0x06 }, //189 0xBD
{ 0x26, 0x20, 0x7f, 0x20, 0x26 }, //190 0xBE
{ 0x20, 0x24, 0x22, 0x25, 0x38 }, //191 0xBF
{ 0x00, 0x2a, 0x2a, 0x2a, 0x01 }, //192 0xC0
{ 0x0e, 0x12, 0x22, 0x02, 0x07 }, //193 0xC1
{ 0x01, 0x0a, 0x04, 0x0a, 0x30 }, //194 0xC2
{ 0x28, 0x3e, 0x29, 0x29, 0x29 }, //195 0xC3
{ 0x10, 0x7f, 0x10, 0x14, 0x18 }, //196 0xC4
{ 0x01, 0x21, 0x21, 0x3f, 0x01 }, //197 0xC5
{ 0x29, 0x29, 0x29, 0x29, 0x3f }, //198 0xC6
{ 0x10, 0x50, 0x51, 0x52, 0x1c }, //199 0xC7
{ 0x78, 0x01, 0x02, 0x7c, 0x00 }, //200 0xC8
{ 0x1f, 0x00, 0x3f, 0x01, 0x06 }, //201 0xC9
{ 0x3f, 0x01, 0x02, 0x04, 0x08 }, //202 0xCA
{ 0x3f, 0x21, 0x21, 0x21, 0x3f }, //203 0xCB
{ 0x38, 0x20, 0x21, 0x22, 0x3c }, //204 0xCC
{ 0x21, 0x21, 0x01, 0x02, 0x0c }, //205 0xCD
{ 0x20, 0x10, 0x40, 0x20, 0x00 }, //206 0xCE
{ 0x70, 0x50, 0x70, 0x00, 0x00 }, //207 0xCF
{ 0x0e, 0x11, 0x09, 0x06, 0x19 }, //208 0xD0
{ 0x02, 0x55, 0x15, 0x55, 0x0f }, //209 0xD1
{ 0x1f, 0x2a, 0x2a, 0x2a, 0x14 }, //210 0xD2
{ 0x0a, 0x15, 0x15, 0x11, 0x02 }, //211 0xD3
{ 0x3f, 0x02, 0x02, 0x04, 0x3e }, //212 0xD4
{ 0x0e, 0x11, 0x19, 0x15, 0x12 }, //213 0xD5
{ 0x0f, 0x12, 0x22, 0x22, 0x1c }, //214 0xD6
{ 0x1c, 0x22, 0x22, 0x22, 0x3f }, //215 0xD7
{ 0x02, 0x01, 0x1e, 0x10, 0x10 }, //216 0xD8
{ 0x20, 0x20, 0x00, 0x70, 0x00 }, //217 0xD9
{ 0x00, 0x00, 0x10, 0x5f, 0x00 }, //218 0xDA
{ 0x28, 0x10, 0x28, 0x00, 0x00 }, //219 0xDB
{ 0x18, 0x24, 0x7e, 0x24, 0x08 }, //220 0xDC
{ 0x14, 0x7f, 0x15, 0x01, 0x01 }, //221 0xDD
{ 0x1f, 0x48, 0x50, 0x50, 0x0f }, //222 0xDE
{ 0x0e, 0x51, 0x11, 0x51, 0x0e }, //223 0xDF
{ 0x3f, 0x12, 0x22, 0x22, 0x1c }, //224 0xE0
{ 0x1c, 0x22, 0x22, 0x12, 0x3f }, //225 0xE1    [calculus beta]
{ 0x3c, 0x52, 0x52, 0x52, 0x3c }, //226 0xE2    [upper case gamma]
{ 0x03, 0x05, 0x02, 0x05, 0x06 }, //227 0xE3    [pi]
{ 0x1a, 0x26, 0x20, 0x26, 0x1a }, //228 0xE4    [upper case sigma]
{ 0x1e, 0x41, 0x01, 0x42, 0x1f }, //229 0xE5    [lower case sigma]
{ 0x63, 0x55, 0x49, 0x41, 0x41 }, //230 0xE6    [mu]
{ 0x22, 0x3c, 0x20, 0x3e, 0x22 }, //231 0xE7    [lower case gamma]
{ 0x51, 0x4a, 0x44, 0x4a, 0x51 }, //232 0xE8    [phi]
{ 0x3c, 0x02, 0x02, 0x02, 0x3f }, //233 0xE9    [theta]
{ 0x28, 0x28, 0x3e, 0x28, 0x48 }, //234 0xEA    [omega]
{ 0x22, 0x3c, 0x28, 0x28, 0x2e }, //235 0xEB    [delta]
{ 0x3e, 0x28, 0x38, 0x28, 0x3e }, //236 0xEC    [infinity]
{ 0x04, 0x04, 0x15, 0x04, 0x04 }, //237 0xED    [null]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //238 0xEE    [set member of]
{ 0x7f, 0x7f, 0x7f, 0x7f, 0x7f }, //239 0xEF    [set intersection]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //240 0xF0    [equivalent]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //241 0xF1    [pluss minus]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //242 0xF2    >_
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //243 0xF3    <_
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //244 0xF4    upper part of integral sign.
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //245 0xF5    lower part of integral sign.
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //246 0xF6    [divide by sign] 
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //247 0xF7    [similar to]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //248 0xF8    [degrees]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //249 0xF9    [sqrt]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //250 0xFA    [superscript n]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //251 0xFB    [squared]
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //252 0xFC    
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //253 0xFD
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, //254 0xFE
{ 0x00, 0x00, 0x00, 0x00, 0x00 } //255  0xFF
};

inline static bool displayBit(unsigned value, unsigned row, unsigned column ) {
        assert( value < 256 );
        assert( row < 7 );
        assert( column < 5 );
        return characterMap[value][column] & (1 << row);
}

Item* MatrixDisplayDriver::construct(ItemDocument *itemDocument, bool newItem, const char *id )
{
        return new MatrixDisplayDriver( (ICNDocument*)itemDocument, newItem, id );
}

LibraryItem *MatrixDisplayDriver::libraryItem()
{
        return new LibraryItem(
                "ec/matrix_display_driver",
                i18n("Matrix Display Driver"),
                i18n("Integrated Circuits"),
                "ic2.png",
                LibraryItem::lit_component,
                MatrixDisplayDriver::construct );
}

MatrixDisplayDriver::MatrixDisplayDriver( ICNDocument *icnDocument, bool newItem, const char *id )
        : Component( icnDocument, newItem, id ? id : "Matrix Display Driver" )
{
        m_name = i18n("Matrix Display Driver");

        m_prevCol = 0;
        m_nextCol = 0;
        m_scanCount = 2;

        createProperty( "diode-configuration", Variant::Type::Select );
        property("diode-configuration")->setCaption( i18n("Configuration") );
        property("diode-configuration")->setAllowed( QStringList::split(',',"Row Cathode,Column Cathode") );
        property("diode-configuration")->setValue("Row Cathode");
        property("diode-configuration")->setAdvanced(true);

        QStringList pins = QStringList::split( ',', "D0,D1,D2,D3,D4,D5,D6,D7,,,,,,C4,C3,C2,C1,C0,,R0,R1,R2,R3,R4,R5,R6", true );
        initDIPSymbol( pins, 64 );
        initDIP(pins);

        m_pValueLogic.resize(8, 0);
        for ( unsigned i = 0; i < 8; ++i )
                m_pValueLogic[i] = createLogicIn( ecNodeWithID("D"+QString::number(i)) );

        m_pRowLogic.resize(7, 0);
        for ( unsigned i = 0; i < 7; ++i ) {
                m_pRowLogic[i] = createLogicOut( ecNodeWithID("R"+QString::number(i)), false );
                m_pRowLogic[i]->setOutputLowConductance( 1.0 );
                m_pRowLogic[i]->setOutputHighVoltage(5.0);
        }

        m_pColLogic.resize(5, 0);
        for ( unsigned i = 0; i < 5; ++i ) {
                m_pColLogic[i] = createLogicOut( ecNodeWithID("C"+QString::number(i)), false );
                m_pColLogic[i]->setOutputHighVoltage(5.0);
        }
}

MatrixDisplayDriver::~MatrixDisplayDriver()
{
}

void MatrixDisplayDriver::stepNonLogic()
{
        if(++m_scanCount < 5 ) return;

        m_scanCount = 0;

        m_pColLogic[m_prevCol]->setHigh(false);
        m_pColLogic[m_nextCol]->setHigh(true);

        unsigned value = 0;
        for(unsigned i = 0; i < 8; ++i )
                value |= ( m_pValueLogic[i]->isHigh() ) ? (1 << i) : 0;

        for(unsigned row = 0; row < 7; row++ ) {
                m_pRowLogic[row]->setHigh(!displayBit(value, row, m_nextCol));
        }

        m_prevCol = m_nextCol;

        m_nextCol++;
        if(m_nextCol >= 5 ) m_nextCol = 0;
}

---