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TIFF and LibTiff Mail List Archive

Thread

2007.04.11 12:49 "[Tiff] DC to tiff", by
2007.04.11 12:49 "[Tiff] DC to tiff", by
2007.04.11 13:05 "Re: [Tiff] DC to tiff", by Chris Losinger
2007.04.11 13:26 "Re: [Tiff] DC to tiff", by Joris
2007.04.11 13:29 "Re: [Tiff] DC to tiff", by Joris
2007.05.31 21:02 "[Tiff] question about TIFFWriteScanline", by
2007.06.01 09:05 "Re: [Tiff] question about TIFFWriteScanline", by Joris

2007.04.11 12:49 "[Tiff] DC to tiff", by

Anybody know how to print a DC to a tiff file? I can't seem to make it

 work..

 Code:
 BITMAPINFOHEADER *pBMh = NULL;
 BITMAPINFO *pBM = NULL;
 BYTE *bits;
 HBITMAP hBmp;
 TIFF *tif;
 // Allocate bitmap info header
 pBMh =
 (BITMAPINFOHEADER*)malloc(sizeof(BITMAPINFOHEADER)+256*sizeof(RGBQUAD));
 if(pBMh == NULL){
 return 0;
 }

 memset(pBMh, 0, sizeof(BITMAPINFOHEADER));
 pBMh->biSize = sizeof(BITMAPINFOHEADER);
 pBMh->biHeight = GetDeviceCaps(dc, VERTRES);
 pBMh->biWidth = ((((int)GetDeviceCaps(dc, HORZRES)*8)+31)&~31)>>3;
 pBMh->biBitCount = 24;
 pBMh->biPlanes = 1;
 pBMh->biCompression = BI_RGB;
 // Setup color table for mono DIBs
 pBM = (BITMAPINFO*)pBMh;
 pBM->bmiColors[1].rgbBlue = 255;
 pBM->bmiColors[1].rgbGreen = 255;
 pBM->bmiColors[1].rgbRed = 255;
 hBmp = CreateDIBSection(dc, (BITMAPINFO*)pBMh, DIB_RGB_COLORS,
 (void**)&bits, 0, 0);
 if(!hBmp || !bits){
 free(pBMh);
 return(0);
 }

 // get the image information from the provided DIB
 UINT32 height = pBMh->biHeight;
 UINT32 width = pBMh->biWidth;
 UINT32 bitcount = (UINT32)pBMh->biBitCount;
 UINT32 bytecount = bitcount / 8;
 free(pBMh);
 if((width > 0) && (height > 0)){
 // open the output TIFF image for writing
 if((tif = TIFFOpen(achFile, "w")) == NULL)
 return 0;
 }

 // set up the image tags

 TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, width);

 TIFFSetField(tif, TIFFTAG_IMAGELENGTH, height);

 TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 8);

 TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_PACKBITS);

 TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);

 TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 3);

 TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, 1);

 TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);

 TIFFSetField(tif, TIFFTAG_RESOLUTIONUNIT, RESUNIT_NONE);

 TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);

 unsigned char * psrc = (unsigned char *)bits;

 unsigned char * pdst = new unsigned char[(width * 3)];

 UINT32 src_index=0;

 UINT32 dst_index=0;

 // now go line by line to write out the image data

 for(UINT32 row = 0; row < height; row++ ){

 // initialize the scan line to zero

 memset(pdst,0,(size_t)(width * 3));

 // moving the data from the dib to a row structure that

 // can be used by the tiff library

 for(UINT32 col = 0; col < (UINT32)width; col++){

 src_index=(width-row-1)*width*bytecount+col*bytecount;

 dst_index = col*3;

 pdst[dst_index++]=psrc[src_index+2];

 pdst[dst_index++]=psrc[src_index+1];

 pdst[dst_index]=psrc[src_index];

 }

 // now actually write the row data

 TIFFWriteScanline(tif, pdst, row, 0);

 }

 TIFFClose(tif);

 return 1;