Added type hints

src/PIL/Image.py

@@ -2052,7 +2052,11 @@
             msg = "illegal image mode"
             raise ValueError(msg)
         if isinstance(data, ImagePalette.ImagePalette):
-            palette = ImagePalette.raw(data.rawmode, data.palette)
+            if data.rawmode is not None:
+                palette = ImagePalette.raw(data.rawmode, data.palette)
+            else:
+                palette = ImagePalette.ImagePalette(palette=data.palette)
+                palette.dirty = 1
         else:
             if not isinstance(data, bytes):
                 data = bytes(data)

src/PIL/ImageDraw2.py

@@ -167,7 +167,7 @@ def polygon(self, xy: Coords, *options: Any) -> None:
         """
         self.render("polygon", xy, *options)
 
-    def rectangle(self, xy: Coords, *options) -> None:
+    def rectangle(self, xy: Coords, *options: Any) -> None:
         """
         Draws a rectangle.
 

src/PIL/ImageFont.py

@@ -269,12 +269,12 @@ def load_from_bytes(f) -> None:
         else:
             load_from_bytes(font)
 
-    def __getstate__(self):
+    def __getstate__(self) -> list[Any]:
         return [self.path, self.size, self.index, self.encoding, self.layout_engine]
 
-    def __setstate__(self, state):
+    def __setstate__(self, state: list[Any]) -> None:
         path, size, index, encoding, layout_engine = state
-        self.__init__(path, size, index, encoding, layout_engine)
+        FreeTypeFont.__init__(self, path, size, index, encoding, layout_engine)
 
     def getname(self) -> tuple[str | None, str | None]:
         """

src/PIL/ImagePalette.py

@@ -208,7 +208,7 @@ def save(self, fp: str | IO[str]) -> None:
 # Internal
 
 
-def raw(rawmode, data: Sequence[int] | bytes | bytearray) -> ImagePalette:
+def raw(rawmode: str, data: Sequence[int] | bytes | bytearray) -> ImagePalette:
     palette = ImagePalette()
     palette.rawmode = rawmode
     palette.palette = data

src/PIL/Jpeg2KImagePlugin.py

@@ -324,7 +324,7 @@ def reduce(self):
         return self._reduce or super().reduce
 
     @reduce.setter
-    def reduce(self, value):
+    def reduce(self, value: int) -> None:
         self._reduce = value
 
     def load(self) -> Image.core.PixelAccess | None:

src/PIL/PdfImagePlugin.py

@@ -25,7 +25,7 @@
 import math
 import os
 import time
-from typing import IO
+from typing import IO, Any
 
 from . import Image, ImageFile, ImageSequence, PdfParser, __version__, features
 
@@ -48,7 +48,12 @@
 # (Internal) Image save plugin for the PDF format.
 
 
-def _write_image(im, filename, existing_pdf, image_refs):
+def _write_image(
+    im: Image.Image,
+    filename: str | bytes,
+    existing_pdf: PdfParser.PdfParser,
+    image_refs: list[PdfParser.IndirectReference],
+) -> tuple[PdfParser.IndirectReference, str]:
     # FIXME: Should replace ASCIIHexDecode with RunLengthDecode
     # (packbits) or LZWDecode (tiff/lzw compression).  Note that
     # PDF 1.2 also supports Flatedecode (zip compression).
@@ -61,10 +66,10 @@
 
     width, height = im.size
 
-    dict_obj = {"BitsPerComponent": 8}
+    dict_obj: dict[str, Any] = {"BitsPerComponent": 8}
     if im.mode == "1":
         if features.check("libtiff"):
-            filter = "CCITTFaxDecode"
+            decode_filter = "CCITTFaxDecode"
             dict_obj["BitsPerComponent"] = 1
             params = PdfParser.PdfArray(
                 [
@@ -79,22 +84,23 @@
                 ]
             )
         else:
-            filter = "DCTDecode"
+            decode_filter = "DCTDecode"
         dict_obj["ColorSpace"] = PdfParser.PdfName("DeviceGray")
         procset = "ImageB"  # grayscale
     elif im.mode == "L":
-        filter = "DCTDecode"
+        decode_filter = "DCTDecode"
         # params = f"<< /Predictor 15 /Columns {width-2} >>"
         dict_obj["ColorSpace"] = PdfParser.PdfName("DeviceGray")
         procset = "ImageB"  # grayscale
     elif im.mode == "LA":
-        filter = "JPXDecode"
+        decode_filter = "JPXDecode"
         # params = f"<< /Predictor 15 /Columns {width-2} >>"
         procset = "ImageB"  # grayscale
         dict_obj["SMaskInData"] = 1
     elif im.mode == "P":
-        filter = "ASCIIHexDecode"
+        decode_filter = "ASCIIHexDecode"
         palette = im.getpalette()
+        assert palette is not None
         dict_obj["ColorSpace"] = [
             PdfParser.PdfName("Indexed"),
             PdfParser.PdfName("DeviceRGB"),
@@ -110,15 +116,15 @@
             image_ref = _write_image(smask, filename, existing_pdf, image_refs)[0]
             dict_obj["SMask"] = image_ref
     elif im.mode == "RGB":
-        filter = "DCTDecode"
+        decode_filter = "DCTDecode"
         dict_obj["ColorSpace"] = PdfParser.PdfName("DeviceRGB")
         procset = "ImageC"  # color images
     elif im.mode == "RGBA":
-        filter = "JPXDecode"
+        decode_filter = "JPXDecode"
         procset = "ImageC"  # color images
         dict_obj["SMaskInData"] = 1
     elif im.mode == "CMYK":
-        filter = "DCTDecode"
+        decode_filter = "DCTDecode"
         dict_obj["ColorSpace"] = PdfParser.PdfName("DeviceCMYK")
         procset = "ImageC"  # color images
         decode = [1, 0, 1, 0, 1, 0, 1, 0]
@@ -131,31 +137,32 @@
 
     op = io.BytesIO()
 
-    if filter == "ASCIIHexDecode":
+    if decode_filter == "ASCIIHexDecode":
         ImageFile._save(im, op, [("hex", (0, 0) + im.size, 0, im.mode)])
-    elif filter == "CCITTFaxDecode":
+    elif decode_filter == "CCITTFaxDecode":
         im.save(
             op,
             "TIFF",
             compression="group4",
             # use a single strip
             strip_size=math.ceil(width / 8) * height,
         )
-    elif filter == "DCTDecode":
+    elif decode_filter == "DCTDecode":
         Image.SAVE["JPEG"](im, op, filename)
-    elif filter == "JPXDecode":
+    elif decode_filter == "JPXDecode":
         del dict_obj["BitsPerComponent"]
         Image.SAVE["JPEG2000"](im, op, filename)
     else:
-        msg = f"unsupported PDF filter ({filter})"
+        msg = f"unsupported PDF filter ({decode_filter})"
         raise ValueError(msg)
 
     stream = op.getvalue()
-    if filter == "CCITTFaxDecode":
+    filter: PdfParser.PdfArray | PdfParser.PdfName
+    if decode_filter == "CCITTFaxDecode":
         stream = stream[8:]
-        filter = PdfParser.PdfArray([PdfParser.PdfName(filter)])
+        filter = PdfParser.PdfArray([PdfParser.PdfName(decode_filter)])
     else:
-        filter = PdfParser.PdfName(filter)
+        filter = PdfParser.PdfName(decode_filter)
 
     image_ref = image_refs.pop(0)
     existing_pdf.write_obj(