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Diffstat (limited to 'PIL/PdfImagePlugin.py')
| -rw-r--r-- | PIL/PdfImagePlugin.py | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/PIL/PdfImagePlugin.py b/PIL/PdfImagePlugin.py deleted file mode 100644 index 86567d6..0000000 --- a/PIL/PdfImagePlugin.py +++ /dev/null @@ -1,210 +0,0 @@ -# -# The Python Imaging Library. -# $Id: PdfImagePlugin.py 2438 2005-05-25 21:09:48Z Fredrik $ -# -# PDF (Acrobat) file handling -# -# History: -# 1996-07-16 fl Created -# 1997-01-18 fl Fixed header -# 2004-02-21 fl Fixes for 1/L/CMYK images, etc. -# 2004-02-24 fl Fixes for 1 and P images. -# -# Copyright (c) 1997-2004 by Secret Labs AB. All rights reserved. -# Copyright (c) 1996-1997 by Fredrik Lundh. -# -# See the README file for information on usage and redistribution. -# - -## -# Image plugin for PDF images (output only). -## - -__version__ = "0.4" - -import Image, ImageFile -import StringIO - - -# -# -------------------------------------------------------------------- - -# object ids: -# 1. catalogue -# 2. pages -# 3. image -# 4. page -# 5. page contents - -def _obj(fp, obj, **dict): - fp.write("%d 0 obj\n" % obj) - if dict: - fp.write("<<\n") - for k, v in dict.items(): - if v is not None: - fp.write("/%s %s\n" % (k, v)) - fp.write(">>\n") - -def _endobj(fp): - fp.write("endobj\n") - -## -# (Internal) Image save plugin for the PDF format. - -def _save(im, fp, filename): - - # - # make sure image data is available - im.load() - - xref = [0]*(5+1) # placeholders - - fp.write("%PDF-1.2\n") - fp.write("% created by PIL PDF driver " + __version__ + "\n") - - # - # Get image characteristics - - width, height = im.size - - # FIXME: Should replace ASCIIHexDecode with RunLengthDecode (packbits) - # or LZWDecode (tiff/lzw compression). Note that PDF 1.2 also supports - # Flatedecode (zip compression). - - bits = 8 - params = None - - if im.mode == "1": - filter = "/ASCIIHexDecode" - colorspace = "/DeviceGray" - procset = "/ImageB" # grayscale - bits = 1 - elif im.mode == "L": - filter = "/DCTDecode" - # params = "<< /Predictor 15 /Columns %d >>" % (width-2) - colorspace = "/DeviceGray" - procset = "/ImageB" # grayscale - elif im.mode == "P": - filter = "/ASCIIHexDecode" - colorspace = "[ /Indexed /DeviceRGB 255 <" - palette = im.im.getpalette("RGB") - for i in range(256): - r = ord(palette[i*3]) - g = ord(palette[i*3+1]) - b = ord(palette[i*3+2]) - colorspace = colorspace + "%02x%02x%02x " % (r, g, b) - colorspace = colorspace + "> ]" - procset = "/ImageI" # indexed color - elif im.mode == "RGB": - filter = "/DCTDecode" - colorspace = "/DeviceRGB" - procset = "/ImageC" # color images - elif im.mode == "CMYK": - filter = "/DCTDecode" - colorspace = "/DeviceCMYK" - procset = "/ImageC" # color images - else: - raise ValueError("cannot save mode %s" % im.mode) - - # - # catalogue - - xref[1] = fp.tell() - _obj(fp, 1, Type = "/Catalog", - Pages = "2 0 R") - _endobj(fp) - - # - # pages - - xref[2] = fp.tell() - _obj(fp, 2, Type = "/Pages", - Count = 1, - Kids = "[4 0 R]") - _endobj(fp) - - # - # image - - op = StringIO.StringIO() - - if filter == "/ASCIIHexDecode": - if bits == 1: - # FIXME: the hex encoder doesn't support packed 1-bit - # images; do things the hard way... - data = im.tostring("raw", "1") - im = Image.new("L", (len(data), 1), None) - im.putdata(data) - ImageFile._save(im, op, [("hex", (0,0)+im.size, 0, im.mode)]) - elif filter == "/DCTDecode": - ImageFile._save(im, op, [("jpeg", (0,0)+im.size, 0, im.mode)]) - elif filter == "/FlateDecode": - ImageFile._save(im, op, [("zip", (0,0)+im.size, 0, im.mode)]) - elif filter == "/RunLengthDecode": - ImageFile._save(im, op, [("packbits", (0,0)+im.size, 0, im.mode)]) - else: - raise ValueError("unsupported PDF filter (%s)" % filter) - - xref[3] = fp.tell() - _obj(fp, 3, Type = "/XObject", - Subtype = "/Image", - Width = width, - Height = height, - Length = len(op.getvalue()), - Filter = filter, - BitsPerComponent = bits, - DecodeParams = params, - ColorSpace = colorspace) - - fp.write("stream\n") - fp.write(op.getvalue()) - fp.write("\nendstream\n") - - _endobj(fp) - - # - # page - - xref[4] = fp.tell() - _obj(fp, 4) - fp.write("<<\n/Type /Page\n/Parent 2 0 R\n"\ - "/Resources <<\n/ProcSet [ /PDF %s ]\n"\ - "/XObject << /image 3 0 R >>\n>>\n"\ - "/MediaBox [ 0 0 %d %d ]\n/Contents 5 0 R\n>>\n" %\ - (procset, width, height)) - _endobj(fp) - - # - # page contents - - op = StringIO.StringIO() - - op.write("q %d 0 0 %d 0 0 cm /image Do Q\n" % (width, height)) - - xref[5] = fp.tell() - _obj(fp, 5, Length = len(op.getvalue())) - - fp.write("stream\n") - fp.write(op.getvalue()) - fp.write("\nendstream\n") - - _endobj(fp) - - # - # trailer - startxref = fp.tell() - fp.write("xref\n0 %d\n0000000000 65535 f \n" % len(xref)) - for x in xref[1:]: - fp.write("%010d 00000 n \n" % x) - fp.write("trailer\n<<\n/Size %d\n/Root 1 0 R\n>>\n" % len(xref)) - fp.write("startxref\n%d\n%%%%EOF\n" % startxref) - fp.flush() - -# -# -------------------------------------------------------------------- - -Image.register_save("PDF", _save) - -Image.register_extension("PDF", ".pdf") - -Image.register_mime("PDF", "application/pdf") |