Fix the use of PIL.Image.ANTIALIAS

.github/workflows/build.yml

@@ -16,14 +16,27 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ 'ubuntu-latest', 'macos-latest', 'windows-latest' ]
+        # Windows build is disabled, doesn't work without PyGObject. See: 
+        # https://pygobject.readthedocs.io/en/latest/getting_started.html#windows-logo-windows
+        os: [ 'ubuntu-latest', 'macos-latest' ] # , 'windows-latest' ]
         py: [ '3.8', '3.11' ] # minimal and latest
     steps:
       - name: Install Python ${{ matrix.py }}
         uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.py }}
 
+      - name: Install PyGObject dependencies (Ubuntu)
+        if: matrix.os == 'ubuntu-latest'
+        run: |
+          sudo apt-get install libgirepository1.0-dev
+
+      - name: Install PyGObject dependencies (Ubuntu)
+        if: matrix.os == 'macos-latest'
+        run: |
+          brew update
+          brew install pygobject3 gtk4
+
       - name: Checkout
         uses: actions/checkout@v2
 

hugophotoswipe/photo.py

@@ -157,7 +157,9 @@ def create_rescaled(self, mode):
         )
 
         # resize the image with PIL
-        nimg = self.original_image.resize((nwidth, nheight), Image.ANTIALIAS)
+        nimg = self.original_image.resize(
+            (nwidth, nheight), Image.Resampling.LANCZOS
+        )
 
         pth = self.large_path if mode == "large" else self.small_path
         logging.info("[%s] Saving %s image to %s" % (self.name, mode, pth))
@@ -219,7 +221,7 @@ def create_thumb_py(self, mode=None, pth=None):
         # Do the actual crop
         nimg = self.original_image.crop(box)
         nimg.load()
-        nimg.thumbnail((nwidth, nheight), Image.ANTIALIAS)
+        nimg.thumbnail((nwidth, nheight), Image.Resampling.LANCZOS)
 
         # Create the filename and save the thumbnail
         logging.info("[%s] Saving SmartCrop.py thumbnail." % self.name)