first commit

projecten1/lib/python3.6/site-packages/PIL/XbmImagePlugin.py

@@ -0,0 +1,96 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# XBM File handling
+#
+# History:
+# 1995-09-08 fl   Created
+# 1996-11-01 fl   Added save support
+# 1997-07-07 fl   Made header parser more tolerant
+# 1997-07-22 fl   Fixed yet another parser bug
+# 2001-02-17 fl   Use 're' instead of 'regex' (Python 2.1) (0.4)
+# 2001-05-13 fl   Added hotspot handling (based on code from Bernhard Herzog)
+# 2004-02-24 fl   Allow some whitespace before first #define
+#
+# Copyright (c) 1997-2004 by Secret Labs AB
+# Copyright (c) 1996-1997 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import re
+from . import Image, ImageFile
+
+__version__ = "0.6"
+
+# XBM header
+xbm_head = re.compile(
+    br"\s*#define[ \t]+.*_width[ \t]+(?P<width>[0-9]+)[\r\n]+"
+    b"#define[ \t]+.*_height[ \t]+(?P<height>[0-9]+)[\r\n]+"
+    b"(?P<hotspot>"
+    b"#define[ \t]+[^_]*_x_hot[ \t]+(?P<xhot>[0-9]+)[\r\n]+"
+    b"#define[ \t]+[^_]*_y_hot[ \t]+(?P<yhot>[0-9]+)[\r\n]+"
+    b")?"
+    b"[\\000-\\377]*_bits\\[\\]"
+)
+
+
+def _accept(prefix):
+    return prefix.lstrip()[:7] == b"#define"
+
+
+##
+# Image plugin for X11 bitmaps.
+
+class XbmImageFile(ImageFile.ImageFile):
+
+    format = "XBM"
+    format_description = "X11 Bitmap"
+
+    def _open(self):
+
+        m = xbm_head.match(self.fp.read(512))
+
+        if m:
+
+            xsize = int(m.group("width"))
+            ysize = int(m.group("height"))
+
+            if m.group("hotspot"):
+                self.info["hotspot"] = (
+                    int(m.group("xhot")), int(m.group("yhot"))
+                    )
+
+            self.mode = "1"
+            self.size = xsize, ysize
+
+            self.tile = [("xbm", (0, 0)+self.size, m.end(), None)]
+
+
+def _save(im, fp, filename):
+
+    if im.mode != "1":
+        raise IOError("cannot write mode %s as XBM" % im.mode)
+
+    fp.write(("#define im_width %d\n" % im.size[0]).encode('ascii'))
+    fp.write(("#define im_height %d\n" % im.size[1]).encode('ascii'))
+
+    hotspot = im.encoderinfo.get("hotspot")
+    if hotspot:
+        fp.write(("#define im_x_hot %d\n" % hotspot[0]).encode('ascii'))
+        fp.write(("#define im_y_hot %d\n" % hotspot[1]).encode('ascii'))
+
+    fp.write(b"static char im_bits[] = {\n")
+
+    ImageFile._save(im, fp, [("xbm", (0, 0)+im.size, 0, None)])
+
+    fp.write(b"};\n")
+
+
+Image.register_open(XbmImageFile.format, XbmImageFile, _accept)
+Image.register_save(XbmImageFile.format, _save)
+
+Image.register_extension(XbmImageFile.format, ".xbm")
+
+Image.register_mime(XbmImageFile.format, "image/xbm")