📄 imageobject.cpp
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return( Index );
}
BOOL CImageObject::Rotate( int nDegrees )
{
m_nLastError = IMAGELIB_HDIB_NULL;
if( m_hDib == NULL ) return( FALSE );
m_nLastError = IMAGELIB_ROTATE_ERROR;
switch( nDegrees ){
case 90:
if( !RotateIt( nDegrees ) ) return( FALSE );
break;
case 180:
if( !Invert() ) return( FALSE );
if( !Reverse() ) return( FALSE );
break;
case 270:
if( !RotateIt( nDegrees ) ) return( FALSE );
break;
default:
m_nLastError = IMAGELIB_ROTATION_VALUE_ERROR;
return( FALSE );
}
m_nLastError = IMAGELIB_SUCCESS;
return( TRUE );
}
BOOL CImageObject::RotateIt( int nDegrees )
{
int nNewWidth, nNewHeight;
nNewWidth = m_nHeight;
nNewHeight = m_nWidth;
unsigned char *pOldBuffer, *pNewBuffer;
HGLOBAL hNewMemory;
DWORD dwNewMemorySize;
BITMAPFILEHEADER *pOldBFH, *pNewBFH;
BITMAPINFOHEADER *pOldBIH, *pNewBIH;
RGBQUAD *pOldPalette, *pNewPalette;
unsigned char *pOldBits, *pNewBits;
int nOldWidthBytes, nNewWidthBytes;
int nNumColors;
pOldBuffer = (unsigned char *) GetDIBPointer( &nOldWidthBytes, m_nBits, &nNewWidthBytes, nNewWidth );
if( pOldBuffer == NULL ) return( FALSE );
pOldBFH = (BITMAPFILEHEADER *) pOldBuffer;
pOldBIH = (BITMAPINFOHEADER *) &pOldBuffer[sizeof(BITMAPFILEHEADER)];
nNumColors = m_nColors;
pOldPalette = (RGBQUAD *) &pOldBuffer[sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)];
pOldBits = (unsigned char *) &pOldBuffer[sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+nNumColors*sizeof(RGBQUAD)];
dwNewMemorySize = (DWORD) nNumColors * sizeof( RGBQUAD ) + sizeof( BITMAPFILEHEADER ) + sizeof( BITMAPINFOHEADER ) + nNewWidthBytes * nNewHeight;
m_nLastError = IMAGELIB_MEMORY_ALLOCATION_ERROR;
hNewMemory = ::GlobalAlloc( GMEM_MOVEABLE | GMEM_ZEROINIT, dwNewMemorySize );
if( hNewMemory == NULL ){
::GlobalUnlock( m_hDib );
return( FALSE );
}
m_nLastError = IMAGELIB_MEMORY_LOCK_ERROR;
pNewBuffer = (unsigned char *) ::GlobalLock( hNewMemory );
if( pNewBuffer == NULL ){
::GlobalFree( hNewMemory );
::GlobalUnlock( m_hDib );
return( FALSE );
}
pNewBFH = (BITMAPFILEHEADER *) pNewBuffer;
pNewBIH = (BITMAPINFOHEADER *) &pNewBuffer[sizeof(BITMAPFILEHEADER)];
pNewPalette = (RGBQUAD *) &pNewBuffer[sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)];
pNewBits = (unsigned char *) &pNewBuffer[sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+nNumColors*sizeof(RGBQUAD)];
*pNewBFH = *pOldBFH;
*pNewBIH = *pOldBIH;
pNewBIH->biSizeImage = nNewWidthBytes * nNewHeight;
pNewBIH->biWidth = nNewWidth;
pNewBIH->biHeight = nNewHeight;
if( nNumColors != 0 ) memcpy( pNewPalette, pOldPalette, nNumColors * sizeof( RGBQUAD ) );
m_nWidth = nNewWidth;
m_nHeight = nNewHeight;
if( nDegrees == 90 ) Rotate90( pNewBits, pOldBits );
else Rotate270( pNewBits, pOldBits );
::GlobalUnlock( m_hDib );
::GlobalUnlock( hNewMemory );
::GlobalFree( m_hDib );
m_hDib = hNewMemory;
m_nLastError = IMAGELIB_SUCCESS;
return( TRUE );
}
void CImageObject::Rotate90( unsigned char *pNewBits, unsigned char *pOldBits )
{
int nOldWidth, nOldHeight, nOldWidthBytes, nNewWidthBytes;
nOldWidth = m_nHeight;
nOldHeight = m_nWidth;
unsigned char *pTemp;
unsigned char Data, Data1, Data2, Data3, Data4, Mask, Shift;
int x, y;
switch( m_nBits ){
case 1:
nOldWidthBytes = ( nOldWidth + 7 ) / 8;
while( ( nOldWidthBytes & 3 ) != 0 ) nOldWidthBytes++;
nNewWidthBytes = ( m_nWidth + 7 ) / 8;
while( ( nNewWidthBytes & 3 ) != 0 ) nNewWidthBytes++;
for( y=0; y<m_nHeight; y++ ){
pTemp = pNewBits;
pTemp += ( ( m_nHeight - 1 - y ) * nNewWidthBytes );
for( x=0; x<m_nWidth; x++ ){
Data = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+(y/8)];
Data >>= ( 7 - ( y & 7 ) );
Data &= 0x01;
Shift = ( 7 - ( ( m_nWidth - 1 - x ) & 7 ) );
Mask = 1 << Shift;
Data <<= Shift;
pTemp[(m_nWidth-1-x)/8] &= ( Mask ^ 0xff );
pTemp[(m_nWidth-1-x)/8] |= Data;
}
}
break;
case 4:
nOldWidthBytes = ( nOldWidth + 1 ) / 2;
while( ( nOldWidthBytes & 3 ) != 0 ) nOldWidthBytes++;
nNewWidthBytes = ( m_nWidth + 1 ) / 2;
while( ( nNewWidthBytes & 3 ) != 0 ) nNewWidthBytes++;
for( y=0; y<m_nHeight; y++ ){
pTemp = pNewBits;
pTemp += ( ( m_nHeight - 1 - y ) * nNewWidthBytes );
for( x=0; x<m_nWidth; x++ ){
Data = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+(y/2)];
if( !( y & 1 ) ) Data >>= 4;
else Data &= 0x0f;
if( ( x & 1 ) ){
Data <<= 4;
pTemp[(m_nWidth-1-x)/2] &= 0x0f;
pTemp[(m_nWidth-1-x)/2] |= Data;
}
else{
pTemp[(m_nWidth-1-x)/2] &= 0xf0;
pTemp[(m_nWidth-1-x)/2] |= Data;
}
}
}
break;
case 8:
nOldWidthBytes = nOldWidth;
while( ( nOldWidthBytes & 3 ) != 0 ) nOldWidthBytes++;
nNewWidthBytes = m_nWidth;
while( ( nNewWidthBytes & 3 ) != 0 ) nNewWidthBytes++;
for( y=0; y<m_nHeight; y++ ){
pTemp = pNewBits;
pTemp += ( ( m_nHeight - 1 - y ) * nNewWidthBytes );
for( x=0; x<m_nWidth; x++ ){
Data = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+y];
pTemp[m_nWidth-1-x] = Data;
}
}
break;
case 16:
nOldWidthBytes = nOldWidth * 2;
while( ( nOldWidthBytes & 3 ) != 0 ) nOldWidthBytes++;
nNewWidthBytes = m_nWidth * 2;
while( ( nNewWidthBytes & 3 ) != 0 ) nNewWidthBytes++;
for( y=0; y<m_nHeight; y++ ){
pTemp = pNewBits;
pTemp += ( ( m_nHeight - 1 - y ) * nNewWidthBytes );
for( x=0; x<m_nWidth; x++ ){
Data1 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+y*2];
Data2 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+y*2+1];
pTemp[(m_nWidth-1-x)*2] = Data1;
pTemp[(m_nWidth-1-x)*2+1] = Data2;
}
}
break;
case 24:
nOldWidthBytes = nOldWidth * 3;
while( ( nOldWidthBytes & 3 ) != 0 ) nOldWidthBytes++;
nNewWidthBytes = m_nWidth * 3;
while( ( nNewWidthBytes & 3 ) != 0 ) nNewWidthBytes++;
for( y=0; y<m_nHeight; y++ ){
pTemp = pNewBits;
pTemp += ( ( m_nHeight - 1 - y ) * nNewWidthBytes );
for( x=0; x<m_nWidth; x++ ){
Data1 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+y*3];
Data2 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+y*3+1];
Data3 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+y*3+2];
pTemp[(m_nWidth-1-x)*3] = Data1;
pTemp[(m_nWidth-1-x)*3+1] = Data2;
pTemp[(m_nWidth-1-x)*3+2] = Data3;
}
}
break;
case 32:
nOldWidthBytes = nOldWidth * 4;
while( ( nOldWidthBytes & 3 ) != 0 ) nOldWidthBytes++;
nNewWidthBytes = m_nWidth * 4;
while( ( nNewWidthBytes & 3 ) != 0 ) nNewWidthBytes++;
for( y=0; y<m_nHeight; y++ ){
pTemp = pNewBits;
pTemp += ( ( m_nHeight - 1 - y ) * nNewWidthBytes );
for( x=0; x<m_nWidth; x++ ){
Data1 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+y*4];
Data2 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+y*4+1];
Data3 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+y*4+2];
Data4 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+y*4+3];
pTemp[(m_nWidth-1-x)*4] = Data1;
pTemp[(m_nWidth-1-x)*4+1] = Data2;
pTemp[(m_nWidth-1-x)*4+2] = Data3;
pTemp[(m_nWidth-1-x)*4+3] = Data4;
}
}
break;
}
}
void CImageObject::Rotate270( unsigned char *pNewBits, unsigned char *pOldBits )
{
int nOldWidth, nOldHeight, nOldWidthBytes, nNewWidthBytes;
nOldWidth = m_nHeight;
nOldHeight = m_nWidth;
unsigned char *pTemp;
unsigned char Data, Data1, Data2, Data3, Data4, Mask, Shift;
int x, y, yy;
switch( m_nBits ){
case 1:
nOldWidthBytes = ( nOldWidth + 7 ) / 8;
while( ( nOldWidthBytes & 3 ) != 0 ) nOldWidthBytes++;
nNewWidthBytes = ( m_nWidth + 7 ) / 8;
while( ( nNewWidthBytes & 3 ) != 0 ) nNewWidthBytes++;
for( y=0; y<m_nHeight; y++ ){
yy = m_nHeight - 1 - y;
pTemp = pNewBits;
pTemp += ( ( m_nHeight - 1 - y ) * nNewWidthBytes );
for( x=0; x<m_nWidth; x++ ){
Data = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+(yy/8)];
Data >>= ( 7 - ( yy & 7 ) );
Data &= 0x01;
Shift = ( 7 - ( x & 7 ) );
Mask = 1 << Shift;
Data <<= Shift;
pTemp[x/8] &= ( Mask ^ 0xff );
pTemp[x/8] |= Data;
}
}
break;
case 4:
nOldWidthBytes = ( nOldWidth + 1 ) / 2;
while( ( nOldWidthBytes & 3 ) != 0 ) nOldWidthBytes++;
nNewWidthBytes = ( m_nWidth + 1 ) / 2;
while( ( nNewWidthBytes & 3 ) != 0 ) nNewWidthBytes++;
for( y=0; y<m_nHeight; y++ ){
yy = m_nHeight - 1 - y;
pTemp = pNewBits;
pTemp += ( ( m_nHeight - 1 - y ) * nNewWidthBytes );
for( x=0; x<m_nWidth; x++ ){
Data = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+(yy/2)];
if( !( yy & 1 ) ) Data >>= 4;
else Data &= 0x0f;
if( !( x & 1 ) ){
Data <<= 4;
pTemp[x/2] &= 0x0f;
pTemp[x/2] |= Data;
}
else{
pTemp[x/2] &= 0xf0;
pTemp[x/2] |= Data;
}
}
}
break;
case 8:
nOldWidthBytes = nOldWidth;
while( ( nOldWidthBytes & 3 ) != 0 ) nOldWidthBytes++;
nNewWidthBytes = m_nWidth;
while( ( nNewWidthBytes & 3 ) != 0 ) nNewWidthBytes++;
for( y=0; y<m_nHeight; y++ ){
yy = m_nHeight - 1 - y;
pTemp = pNewBits;
pTemp += ( ( m_nHeight - 1 - y ) * nNewWidthBytes );
for( x=0; x<m_nWidth; x++ ){
Data = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+yy];
pTemp[x] = Data;
}
}
break;
case 16:
nOldWidthBytes = nOldWidth * 2;
while( ( nOldWidthBytes & 3 ) != 0 ) nOldWidthBytes++;
nNewWidthBytes = m_nWidth * 2;
while( ( nNewWidthBytes & 3 ) != 0 ) nNewWidthBytes++;
for( y=0; y<m_nHeight; y++ ){
yy = m_nHeight - 1 - y;
pTemp = pNewBits;
pTemp += ( ( m_nHeight - 1 - y ) * nNewWidthBytes );
for( x=0; x<m_nWidth; x++ ){
Data1 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+yy*2];
Data2 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+yy*2+1];
pTemp[x*2] = Data1;
pTemp[x*2+1] = Data2;
}
}
break;
case 24:
nOldWidthBytes = nOldWidth * 3;
while( ( nOldWidthBytes & 3 ) != 0 ) nOldWidthBytes++;
nNewWidthBytes = m_nWidth * 3;
while( ( nNewWidthBytes & 3 ) != 0 ) nNewWidthBytes++;
for( y=0; y<m_nHeight; y++ ){
yy = m_nHeight - 1 - y;
pTemp = pNewBits;
pTemp += ( ( m_nHeight - 1 - y ) * nNewWidthBytes );
for( x=0; x<m_nWidth; x++ ){
Data1 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+yy*3];
Data2 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+yy*3+1];
Data3 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+yy*3+2];
pTemp[x*3] = Data1;
pTemp[x*3+1] = Data2;
pTemp[x*3+2] = Data3;
}
}
break;
case 32:
nOldWidthBytes = nOldWidth * 4;
while( ( nOldWidthBytes & 3 ) != 0 ) nOldWidthBytes++;
nNewWidthBytes = m_nWidth * 4;
while( ( nNewWidthBytes & 3 ) != 0 ) nNewWidthBytes++;
for( y=0; y<m_nHeight; y++ ){
yy = m_nHeight - 1 - y;
pTemp = pNewBits;
pTemp += ( ( m_nHeight - 1 - y ) * nNewWidthBytes );
for( x=0; x<m_nWidth; x++ ){
Data1 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+yy*4];
Data2 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+yy*4+1];
Data3 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+yy*4+2];
Data4 = pOldBits[(m_nWidth-1-x)*nOldWidthBytes+yy*4+3];
pTemp[x*4] = Data1;
pTemp[x*4+1] = Data2;
pTemp[x*4+2] = Data3;
pTemp[x*4+3] = Data4;
}
}
break;
}
}
BOOL CImageObject::Invert( void )
{
unsigned char *pBuffer, *pTemp1, *pTemp2;
BITMAPINFOHEADER *pBIH;
RGBQUAD *pPalette;
unsigned char *pBits;
int nWidthBytes;
int nNumColors;
int y, yy;
unsigned char *pTemp;
pBuffer = (unsigned char *) GetDIBPointer( &nWidthBytes );
if( pBuffer == NULL ) return( FALSE );
pBIH = (BITMAPINFOHEADER *) &pBuffer[sizeof(BITMAPFILEHEADER)];
nNumColors = m_nColors;
pPalette = (RGBQUAD *) &pBuffer[sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)];
pBits = (unsigned char *) &pBuffer[sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+nNumColors*sizeof(RGBQUAD)];
pTemp = new unsigned char [nWidthBytes];
if( pTemp != NULL ){
yy = pBIH->biHeight;
if( !( yy & 1 ) ) yy /= 2;
else yy = ( yy / 2 ) + 1;
for( y=0; y<yy; y++ ){
pTemp1 = pBits;
pTemp1 += ( ( pBIH->biHeight - 1 - y ) * nWidthBytes );
pTemp2 = pBits;
pTemp2 += y * nWidthBytes;
memcpy( pTemp, pTemp1, nWidthBytes );
memcpy( pTemp1, pTemp2, nWidthBytes );
memcpy( pTemp2, pTemp, nWidthBytes );
}
delete [] pTemp;
}
::GlobalUnlock( m_hDib );
m_nLastError = IMAGELIB_SUCCESS;
return( TRUE );
}
BOOL CImageObject::Reverse( void )
{
unsigned char *pBuffer, *pTemp;
BITMAPINFOHEADER *pBIH;
RGBQUAD *pPalette;
unsigned char *pBits;
int nWidthBytes;
int nNumColors;
int y, x, xx, xt, nWidth;
unsigned char Data, Tmp, Data1, Tmp1;
pBuffer = (unsigned char *) GetDIBPointer( &nWidthBytes );
if( pBuffer == NULL ) return( FALSE );
pBIH = (BITMAPINFOHEADER *) &pBuffer[sizeof(BITMAPFILEHEADER)];
nNumColors = m_nColors;
pPalette = (RGBQUAD *) &pBuffer[sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)];
pBits = (unsigned char *) &pBuffer[sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+nNumColors*sizeof(RGBQUAD)];
xx = pBIH->biWidth;
if( !( xx & 1 ) ) xx /= 2;
else xx = ( xx / 2 ) + 1;
nWidth = pBIH->biWidth;
if( m_nBits == 4 ){
xx = pBIH->biWidth;
xx = ( xx + 3 ) / 4;
nWidth = ( pBIH->biWidth + 1 ) / 2;
}
else if( m_nBits == 1 ){
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