openclonk/src/graphics/Bitmap256.cpp

106 lines
2.5 KiB
C++

/*
* OpenClonk, http://www.openclonk.org
*
* Copyright (c) 1998-2000 Matthes Bender
* Copyright (c) 2002 Sven Eberhardt
* Copyright (c) 2001-2009, RedWolf Design GmbH, http://www.clonk.de
*
* Portions might be copyrighted by other authors who have contributed
* to OpenClonk.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
* See isc_license.txt for full license and disclaimer.
*
* "Clonk" is a registered trademark of Matthes Bender.
* See clonk_trademark_license.txt for full license.
*/
/* A structure for handling 256-color bitmap files */
#include "C4Include.h"
#include <Bitmap256.h>
C4BMPInfo::C4BMPInfo()
{
Default();
}
void C4BMPInfo::Default()
{
ZeroMem(this,sizeof(C4BMPInfo));
}
int C4BMPInfo::FileBitsOffset()
{
return Head.bfOffBits-sizeof(C4BMPInfo);
}
void C4BMPInfo::Set(int iWdt, int iHgt, int iBitDepth)
{
Default();
// Set header
Head.bfType=*((WORD*)"BM");
Head.bfSize=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+DWordAligned(iWdt)*iHgt;
Head.bfOffBits=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER);
// Set bitmap info
Info.biSize=sizeof(BITMAPINFOHEADER);
Info.biWidth=iWdt;
Info.biHeight=iHgt;
Info.biPlanes=1;
Info.biBitCount=iBitDepth;
Info.biCompression=0;
Info.biSizeImage=iWdt*iHgt;
Info.biClrUsed=Info.biClrImportant=0;
}
C4BMP256Info::C4BMP256Info()
{
Default();
}
bool C4BMP256Info::Valid()
{
if (Head.bfType != *((WORD*)"BM") ) return false;
if ((Info.biBitCount!=8) || (Info.biCompression!=0)) return false;
return true;
}
int C4BMP256Info::FileBitsOffset()
{
return Head.bfOffBits-sizeof(C4BMP256Info);
}
void C4BMP256Info::Set(int iWdt, int iHgt, BYTE *bypPalette)
{
Default();
// Set header
Head.bfType=*((WORD*)"BM");
Head.bfSize=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+256*sizeof(RGBQUAD)+DWordAligned(iWdt)*iHgt;
Head.bfOffBits=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+256*sizeof(RGBQUAD);
// Set bitmap info
Info.biSize=sizeof(BITMAPINFOHEADER);
Info.biWidth=iWdt;
Info.biHeight=iHgt;
Info.biPlanes=1;
Info.biBitCount=8;
Info.biCompression=0;
Info.biSizeImage=iWdt*iHgt;
Info.biClrUsed=Info.biClrImportant=256;
// Set palette
for (int cnt=0; cnt<256; cnt++)
{
Colors[cnt].rgbRed = bypPalette[cnt*3+0];
Colors[cnt].rgbGreen = bypPalette[cnt*3+1];
Colors[cnt].rgbBlue = bypPalette[cnt*3+2];
}
}
void C4BMP256Info::Default()
{
ZeroMem(this,sizeof(C4BMP256Info));
}