AppleWin/source/NTSC_CharSet.cpp

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2014-12-31 22:53:55 +00:00
/*
AppleWin : An Apple //e emulator for Windows
Copyright (C) 2010-2011, William S Simms
Copyright (C) 2016, Tom Charlesworth
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AppleWin 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.
AppleWin is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with AppleWin; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "StdAfx.h"
#include "AppleWin.h"
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#include "NTSC_CharSet.h"
unsigned char csbits_enhanced2e[2][256][8]; // Enhanced //e
unsigned char csbits_2e[2][256][8]; // Original //e (no mousetext)
unsigned char csbits_a2[1][256][8]; // ][ and ][+
unsigned char csbits_pravets82[1][256][8]; // Pravets 82
unsigned char csbits_pravets8M[1][256][8]; // Pravets 8M
unsigned char csbits_pravets8C[2][256][8]; // Pravets 8A & 8C
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//
static const UINT bitmapWidth = 256;
static const UINT bitmapWidthBytes = bitmapWidth/8;
static const UINT bitmapHeight = 768;
static const UINT charWidth = 16;
static const UINT charWidthBytes = 16/8;
static const UINT charHeight = 16;
static void get_csbits_xy(csbits_t csbits, UINT ch, UINT cx, UINT cy, const BYTE* pBitmap)
{
_ASSERT(ch < 256);
_ASSERT((cx < bitmapWidth/charWidth) && (cy < bitmapHeight/charHeight));
pBitmap += cy*charHeight*bitmapWidthBytes + cx*charWidthBytes;
for (UINT y=0; y<8; y++)
{
BYTE n = 0;
for (int x=0; x<14; x+=2)
{
UINT xp = x/8;
BYTE d = pBitmap[xp];
UINT b = 7 - x%8;
if (d & (1<<b)) n |= 0x80;
n >>= 1;
}
csbits[0][ch][y] = n;
pBitmap += bitmapWidthBytes*2;
}
}
static void get_csbits(csbits_t csbits, const char* resourceName, const UINT cy0)
{
const UINT bufferSize = bitmapWidthBytes*bitmapHeight;
BYTE* pBuffer = new BYTE [bufferSize];
HBITMAP hCharBitmap = LoadBitmap(g_hInstance, resourceName);
GetBitmapBits(hCharBitmap, bufferSize, pBuffer);
for (UINT cy=cy0, ch=0; cy<cy0+16; cy++)
{
for (UINT cx=0; cx<16; cx++)
{
get_csbits_xy(csbits, ch++, cx, cy, pBuffer);
}
}
DeleteObject(hCharBitmap);
delete [] pBuffer;
}
void make_csbits(void)
{
get_csbits(&csbits_enhanced2e[0], TEXT("CHARSET40"), 0); // Enhanced //e: Alt char set off
get_csbits(&csbits_enhanced2e[1], TEXT("CHARSET40"), 16); // Enhanced //e: Alt char set on (mousetext)
get_csbits(&csbits_a2[0], TEXT("CHARSET40"), 32); // Apple ][, ][+
get_csbits(&csbits_pravets82[0], TEXT("CHARSET82"), 0); // Pravets 82
get_csbits(&csbits_pravets8M[0], TEXT("CHARSET8M"), 0); // Pravets 8M
get_csbits(&csbits_pravets8C[0], TEXT("CHARSET8C"), 0); // Pravets 8A / 8C: Alt char set off
get_csbits(&csbits_pravets8C[1], TEXT("CHARSET8C"), 16); // Pravets 8A / 8C: Alt char set on
// Original //e is just Enhanced //e with the 32 mousetext chars [0x40..0x5F] replaced by the non-alt charset chars [0x40..0x5F]
memcpy(csbits_2e, csbits_enhanced2e, sizeof(csbits_enhanced2e));
memcpy(&csbits_2e[1][64], &csbits_2e[0][64], 32*8);
}