scripts: Update CFB font generator

Update CFB font generator so it works with Pillow version 10. They
deprecated some methods, with no direct replacements, so the generated
fonts might be slightly different.

Signed-off-by: Jonathan Rico <jonathan@rico.live>

scripts/build/gen_cfb_font_header.py

@@ -76,7 +76,13 @@ def extract_font_glyphs():
     fw_max = 0
     fh_max = 0
     for i in range(args.first, args.last + 1):
-        fw, fh = font.getsize(chr(i))
+        # returns (left, top, right, bottom) bounding box
+        size = font.getbbox(chr(i))
+
+        # calculate width + height
+        fw = size[2] - size[0]  # right - left
+        fh = size[3] - size[1]  # bottom - top
+
         if fw > fw_max:
             fw_max = fw
         if fh > fh_max:
@@ -100,7 +106,12 @@ def extract_font_glyphs():
         image = Image.new('1', (width, height), 'white')
         draw = ImageDraw.Draw(image)
 
-        fw, fh = draw.textsize(chr(i), font=font)
+        # returns (left, top, right, bottom) bounding box
+        size = draw.textbbox((0, 0), chr(i), font=font)
+
+        # calculate width + height
+        fw = size[2] - size[0]  # right - left
+        fh = size[3] - size[1]  # bottom - top
 
         xpos = 0
         if args.center_x:

scripts/requirements-extras.txt

@@ -16,7 +16,7 @@ clang-format>=15.0.0
 lpc_checksum
 
 # used by scripts/build/gen_cfb_font_header.py - helper script for user
-Pillow
+Pillow>=10.0
 
 # can be used to sign a Zephyr application binary for consumption by a bootloader
 imgtool>=1.9