BOOL CStdBitmap::Enlarge(int iWdt, int iHgt) {
if (!Bits) return FALSE;
iWdt = Max(iWdt, (int)Info.biWidth);
iHgt = Max(iHgt, (int)Abs(Info.biHeight));
if (!((iWdt > Info.biWidth) || (iHgt > Abs(Info.biHeight)))) return FALSE;
int nPitch = DWordAligned(iWdt * Info.biBitCount / 8);
int nSize = nPitch * iHgt;
BYTE *nBits;
if (!(nBits = new BYTE[nSize])) return FALSE;
ZeroMem(nBits, nSize);
iHgt *= Sign(Info.biHeight);
StdBlit((uint8_t *)Bits, Info.Pitch(), Info.biHeight, 0, 0, Info.biWidth,
Info.biHeight, (uint8_t *)nBits, nPitch, iHgt, 0, 0, Info.biWidth,
Info.biHeight, Info.biBitCount / 8);
Info.biWidth = iWdt;
Info.biHeight = iHgt;
Info.biSizeImage = nSize;
delete[] Bits;
Bits = nBits;
return TRUE;
}
void CBitmap256Info::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];
}
}
bool CSurface8::Read(CStdStream &hGroup)
{
int cnt,lcnt;
C4BMP256Info BitmapInfo;
// read bmpinfo-header
if (!hGroup.Read(&BitmapInfo,sizeof(C4BMPInfo))) return false;
// is it 8bpp?
if (BitmapInfo.Info.biBitCount == 8)
{
if (!hGroup.Read(((BYTE *) &BitmapInfo)+sizeof(C4BMPInfo),sizeof(BitmapInfo)-sizeof(C4BMPInfo))) return false;
if (!hGroup.Advance(BitmapInfo.FileBitsOffset())) return false;
}
else
{
// read 24bpp
if (BitmapInfo.Info.biBitCount != 24) return false;
if (!hGroup.Advance(((C4BMPInfo) BitmapInfo).FileBitsOffset())) return false;
}
// no 8bpp-surface in newgfx!
// needs to be kept for some special surfaces
//f8BitSfc=false;
// Create and lock surface
if (!Create(BitmapInfo.Info.biWidth,BitmapInfo.Info.biHeight)) return false;
if (BitmapInfo.Info.biBitCount == 8)
{
// Copy palette
for (cnt=0; cnt<256; cnt++)
{
pPal->Colors[cnt] = C4RGB(BitmapInfo.Colors[cnt].rgbRed,
BitmapInfo.Colors[cnt].rgbGreen,
BitmapInfo.Colors[cnt].rgbBlue);
}
}
// create line buffer
int iBufSize=DWordAligned(BitmapInfo.Info.biWidth*BitmapInfo.Info.biBitCount/8);
BYTE *pBuf = new BYTE[iBufSize];
// Read lines
for (lcnt=Hgt-1; lcnt>=0; lcnt--)
{
if (!hGroup.Read(pBuf, iBufSize))
{ Clear(); delete [] pBuf; return false; }
BYTE *pPix=pBuf;
for (int x=0; x<BitmapInfo.Info.biWidth; ++x)
switch (BitmapInfo.Info.biBitCount)
{
case 8:
SetPix(x, lcnt, *pPix++);
break;
case 24:
return false;
break;
}
}
// free buffer again
delete [] pBuf;
return true;
}
void C4BMP256Info::Set(int iWdt, int iHgt, CStdPalette *Palette)
{
Default();
// Set header
Head.bfType=*((const 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 = GetRedValue(Palette->Colors[cnt]);
Colors[cnt].rgbGreen = GetGreenValue(Palette->Colors[cnt]);
Colors[cnt].rgbBlue = GetBlueValue(Palette->Colors[cnt]);
}
}