id card generator

1 files changed, 271 insertions, 0 deletions

diff --git a/env/lib/python3.10/site-packages/PIL/PdfImagePlugin.py b/env/lib/python3.10/site-packages/PIL/PdfImagePlugin.py
new file mode 100644
index 0000000..404759a
--- /dev/null
+++ b/env/lib/python3.10/site-packages/PIL/PdfImagePlugin.py
@@ -0,0 +1,271 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# 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).
+##
+
+import io
+import math
+import os
+import time
+
+from . import Image, ImageFile, ImageSequence, PdfParser, __version__, features
+
+#
+# --------------------------------------------------------------------
+
+# object ids:
+#  1. catalogue
+#  2. pages
+#  3. image
+#  4. page
+#  5. page contents
+
+
+def _save_all(im, fp, filename):
+    _save(im, fp, filename, save_all=True)
+
+
+##
+# (Internal) Image save plugin for the PDF format.
+
+
+def _save(im, fp, filename, save_all=False):
+    is_appending = im.encoderinfo.get("append", False)
+    if is_appending:
+        existing_pdf = PdfParser.PdfParser(f=fp, filename=filename, mode="r+b")
+    else:
+        existing_pdf = PdfParser.PdfParser(f=fp, filename=filename, mode="w+b")
+
+    resolution = im.encoderinfo.get("resolution", 72.0)
+
+    info = {
+        "title": None
+        if is_appending
+        else os.path.splitext(os.path.basename(filename))[0],
+        "author": None,
+        "subject": None,
+        "keywords": None,
+        "creator": None,
+        "producer": None,
+        "creationDate": None if is_appending else time.gmtime(),
+        "modDate": None if is_appending else time.gmtime(),
+    }
+    for k, default in info.items():
+        v = im.encoderinfo.get(k) if k in im.encoderinfo else default
+        if v:
+            existing_pdf.info[k[0].upper() + k[1:]] = v
+
+    #
+    # make sure image data is available
+    im.load()
+
+    existing_pdf.start_writing()
+    existing_pdf.write_header()
+    existing_pdf.write_comment(f"created by Pillow {__version__} PDF driver")
+
+    #
+    # pages
+    ims = [im]
+    if save_all:
+        append_images = im.encoderinfo.get("append_images", [])
+        for append_im in append_images:
+            append_im.encoderinfo = im.encoderinfo.copy()
+            ims.append(append_im)
+    number_of_pages = 0
+    image_refs = []
+    page_refs = []
+    contents_refs = []
+    for im in ims:
+        im_number_of_pages = 1
+        if save_all:
+            try:
+                im_number_of_pages = im.n_frames
+            except AttributeError:
+                # Image format does not have n_frames.
+                # It is a single frame image
+                pass
+        number_of_pages += im_number_of_pages
+        for i in range(im_number_of_pages):
+            image_refs.append(existing_pdf.next_object_id(0))
+            page_refs.append(existing_pdf.next_object_id(0))
+            contents_refs.append(existing_pdf.next_object_id(0))
+            existing_pdf.pages.append(page_refs[-1])
+
+    #
+    # catalog and list of pages
+    existing_pdf.write_catalog()
+
+    page_number = 0
+    for im_sequence in ims:
+        im_pages = ImageSequence.Iterator(im_sequence) if save_all else [im_sequence]
+        for im in im_pages:
+            # 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
+            decode = None
+
+            #
+            # Get image characteristics
+
+            width, height = im.size
+
+            if im.mode == "1":
+                if features.check("libtiff"):
+                    filter = "CCITTFaxDecode"
+                    bits = 1
+                    params = PdfParser.PdfArray(
+                        [
+                            PdfParser.PdfDict(
+                                {
+                                    "K": -1,
+                                    "BlackIs1": True,
+                                    "Columns": width,
+                                    "Rows": height,
+                                }
+                            )
+                        ]
+                    )
+                else:
+                    filter = "DCTDecode"
+                colorspace = PdfParser.PdfName("DeviceGray")
+                procset = "ImageB"  # grayscale
+            elif im.mode == "L":
+                filter = "DCTDecode"
+                # params = f"<< /Predictor 15 /Columns {width-2} >>"
+                colorspace = PdfParser.PdfName("DeviceGray")
+                procset = "ImageB"  # grayscale
+            elif im.mode == "P":
+                filter = "ASCIIHexDecode"
+                palette = im.getpalette()
+                colorspace = [
+                    PdfParser.PdfName("Indexed"),
+                    PdfParser.PdfName("DeviceRGB"),
+                    255,
+                    PdfParser.PdfBinary(palette),
+                ]
+                procset = "ImageI"  # indexed color
+            elif im.mode == "RGB":
+                filter = "DCTDecode"
+                colorspace = PdfParser.PdfName("DeviceRGB")
+                procset = "ImageC"  # color images
+            elif im.mode == "CMYK":
+                filter = "DCTDecode"
+                colorspace = PdfParser.PdfName("DeviceCMYK")
+                procset = "ImageC"  # color images
+                decode = [1, 0, 1, 0, 1, 0, 1, 0]
+            else:
+                raise ValueError(f"cannot save mode {im.mode}")
+
+            #
+            # image
+
+            op = io.BytesIO()
+
+            if filter == "ASCIIHexDecode":
+                ImageFile._save(im, op, [("hex", (0, 0) + im.size, 0, im.mode)])
+            elif filter == "CCITTFaxDecode":
+                im.save(
+                    op,
+                    "TIFF",
+                    compression="group4",
+                    # use a single strip
+                    strip_size=math.ceil(im.width / 8) * im.height,
+                )
+            elif filter == "DCTDecode":
+                Image.SAVE["JPEG"](im, op, filename)
+            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(f"unsupported PDF filter ({filter})")
+
+            stream = op.getvalue()
+            if filter == "CCITTFaxDecode":
+                stream = stream[8:]
+                filter = PdfParser.PdfArray([PdfParser.PdfName(filter)])
+            else:
+                filter = PdfParser.PdfName(filter)
+
+            existing_pdf.write_obj(
+                image_refs[page_number],
+                stream=stream,
+                Type=PdfParser.PdfName("XObject"),
+                Subtype=PdfParser.PdfName("Image"),
+                Width=width,  # * 72.0 / resolution,
+                Height=height,  # * 72.0 / resolution,
+                Filter=filter,
+                BitsPerComponent=bits,
+                Decode=decode,
+                DecodeParms=params,
+                ColorSpace=colorspace,
+            )
+
+            #
+            # page
+
+            existing_pdf.write_page(
+                page_refs[page_number],
+                Resources=PdfParser.PdfDict(
+                    ProcSet=[PdfParser.PdfName("PDF"), PdfParser.PdfName(procset)],
+                    XObject=PdfParser.PdfDict(image=image_refs[page_number]),
+                ),
+                MediaBox=[
+                    0,
+                    0,
+                    width * 72.0 / resolution,
+                    height * 72.0 / resolution,
+                ],
+                Contents=contents_refs[page_number],
+            )
+
+            #
+            # page contents
+
+            page_contents = b"q %f 0 0 %f 0 0 cm /image Do Q\n" % (
+                width * 72.0 / resolution,
+                height * 72.0 / resolution,
+            )
+
+            existing_pdf.write_obj(contents_refs[page_number], stream=page_contents)
+
+            page_number += 1
+
+    #
+    # trailer
+    existing_pdf.write_xref_and_trailer()
+    if hasattr(fp, "flush"):
+        fp.flush()
+    existing_pdf.close()
+
+
+#
+# --------------------------------------------------------------------
+
+
+Image.register_save("PDF", _save)
+Image.register_save_all("PDF", _save_all)
+
+Image.register_extension("PDF", ".pdf")
+
+Image.register_mime("PDF", "application/pdf")