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37f22ebfcd
First, we go for the obvious stuff. The string module methods are gone in 3.0, so we translate them to the appropriate methods on the string class.
95 lines
2.3 KiB
Python
95 lines
2.3 KiB
Python
#
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# The Python Imaging Library.
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# $Id$
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#
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# XBM File handling
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#
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# History:
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# 1995-09-08 fl Created
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# 1996-11-01 fl Added save support
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# 1997-07-07 fl Made header parser more tolerant
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# 1997-07-22 fl Fixed yet another parser bug
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# 2001-02-17 fl Use 're' instead of 'regex' (Python 2.1) (0.4)
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# 2001-05-13 fl Added hotspot handling (based on code from Bernhard Herzog)
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# 2004-02-24 fl Allow some whitespace before first #define
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#
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# Copyright (c) 1997-2004 by Secret Labs AB
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# Copyright (c) 1996-1997 by Fredrik Lundh
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#
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# See the README file for information on usage and redistribution.
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#
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__version__ = "0.6"
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import re
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import Image, ImageFile
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# XBM header
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xbm_head = re.compile(
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"\s*#define[ \t]+[^_]*_width[ \t]+(?P<width>[0-9]+)[\r\n]+"
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"#define[ \t]+[^_]*_height[ \t]+(?P<height>[0-9]+)[\r\n]+"
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"(?P<hotspot>"
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"#define[ \t]+[^_]*_x_hot[ \t]+(?P<xhot>[0-9]+)[\r\n]+"
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"#define[ \t]+[^_]*_y_hot[ \t]+(?P<yhot>[0-9]+)[\r\n]+"
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")?"
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"[\\000-\\377]*_bits\\[\\]"
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)
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def _accept(prefix):
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return prefix.lstrip()[:7] == "#define"
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##
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# Image plugin for X11 bitmaps.
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class XbmImageFile(ImageFile.ImageFile):
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format = "XBM"
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format_description = "X11 Bitmap"
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def _open(self):
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m = xbm_head.match(self.fp.read(512))
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if m:
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xsize = int(m.group("width"))
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ysize = int(m.group("height"))
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if m.group("hotspot"):
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self.info["hotspot"] = (
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int(m.group("xhot")), int(m.group("yhot"))
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)
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self.mode = "1"
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self.size = xsize, ysize
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self.tile = [("xbm", (0, 0)+self.size, m.end(), None)]
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def _save(im, fp, filename):
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if im.mode != "1":
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raise IOError, "cannot write mode %s as XBM" % im.mode
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fp.write("#define im_width %d\n" % im.size[0])
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fp.write("#define im_height %d\n" % im.size[1])
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hotspot = im.encoderinfo.get("hotspot")
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if hotspot:
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fp.write("#define im_x_hot %d\n" % hotspot[0])
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fp.write("#define im_y_hot %d\n" % hotspot[1])
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fp.write("static char im_bits[] = {\n")
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ImageFile._save(im, fp, [("xbm", (0,0)+im.size, 0, None)])
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fp.write("};\n")
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Image.register_open("XBM", XbmImageFile, _accept)
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Image.register_save("XBM", _save)
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Image.register_extension("XBM", ".xbm")
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Image.register_mime("XBM", "image/xbm")
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