Files
lumeex/src/py/builder/image_processor.py
T
Djeex 2e93e8172c Fixed: Preserve embedded ICC color profiles when converting and resizing images
Image.open() reads the source's ICC profile into img.info, but that dict resets to empty after convert() or resize(), and save() was never passing icc_profile anyway. DCI-P3 and Rec.2020 photos were silently falling back to sRGB interpretation once processed.
2026-08-17 11:11:39 +02:00

128 lines
4.7 KiB
Python

import logging
from pathlib import Path
from PIL import Image, features
from shutil import copyfile
def convert_and_resize_image(input_path, output_path, resize=True, max_width=1140):
"""Convert an image to WebP (or JPEG fallback) and optionally resize it."""
try:
if not input_path.exists():
logging.error(f"[✗] Image file not found: {input_path}")
return
img = Image.open(input_path)
icc_profile = img.info.get("icc_profile")
if img.mode != "RGB":
img = img.convert("RGB")
if resize:
width, height = img.size
if width > max_width:
new_height = int((max_width / width) * height)
img = img.resize((max_width, new_height), Image.LANCZOS)
output_path.parent.mkdir(parents=True, exist_ok=True)
# Check WebP support, otherwise fallback to JPEG
fmt = "WEBP" if features.check("webp") else "JPEG"
if fmt == "JPEG":
output_path = output_path.with_suffix(".jpg")
save_kwargs = {"quality": 90 if fmt == "JPEG" else 100}
if icc_profile:
save_kwargs["icc_profile"] = icc_profile
img.save(output_path, fmt, **save_kwargs)
logging.info(f"[✓] Processed image: {input_path}{output_path}")
except Exception as e:
logging.error(f"[✗] Error processing image {input_path}: {e}")
def process_images(images, resize_images, img_dir, build_dir):
"""Process a list of image references and update paths to optimized versions."""
for img in images:
src_path = img_dir / img["src"]
webp_path = build_dir / "img" / Path(img["src"]).with_suffix(".webp")
convert_and_resize_image(src_path, webp_path, resize=resize_images)
if webp_path.exists():
img["src"] = str(Path(img["src"]).with_suffix(".webp"))
else:
# Fallback if WebP not created
jpg_path = webp_path.with_suffix(".jpg")
if jpg_path.exists():
img["src"] = str(Path(img["src"]).with_suffix(".jpg"))
def copy_original_images(images, img_dir, build_dir):
"""Copy original image files without processing."""
for img in images:
src_path = img_dir / img["src"]
dest_path = build_dir / "img" / img["src"]
try:
if not src_path.exists():
logging.error(f"[✗] Original image not found: {src_path}")
continue
dest_path.parent.mkdir(parents=True, exist_ok=True)
copyfile(src_path, dest_path)
logging.info(f"[✓] Copied original: {src_path}{dest_path}")
except Exception as e:
logging.error(f"[✗] Error copying {src_path}: {e}")
def get_favicon_path(theme_vars, theme_dir):
"""Retrieve the favicon path from theme variables, ensuring it exists."""
fav_path = theme_vars.get("favicon", {}).get("path")
if not fav_path:
logging.warning("[~] No favicon path defined in theme.yaml")
return None
path = Path(fav_path)
if not path.is_absolute():
path = theme_dir / path
if not path.exists():
logging.error(f"[✗] Favicon not found: {path}")
return None
return path
def generate_favicons_from_logo(theme_vars, theme_dir, output_dir):
"""Generate multiple PNG favicons from a single source image."""
logo_path = get_favicon_path(theme_vars, theme_dir)
if not logo_path:
logging.warning("[~] PNG favicons not generated.")
return
try:
output_dir.mkdir(parents=True, exist_ok=True)
specs = [
(32, "favicon-32.png"), (96, "favicon-96.png"), (128, "favicon-128.png"),
(192, "favicon-192.png"), (196, "favicon-196.png"),
(152, "favicon-152.png"), (180, "favicon-180.png")
]
img = Image.open(logo_path).convert("RGBA")
for size, name in specs:
img.resize((size, size), Image.LANCZOS).save(output_dir / name, format="PNG")
logging.info(f"[✓] PNG favicons generated in {output_dir}")
except Exception as e:
logging.error(f"[✗] Error generating PNG favicons: {e}")
def generate_favicon_ico(theme_vars, theme_dir, output_path):
"""Generate a multi-size favicon.ico from a source image."""
logo_path = get_favicon_path(theme_vars, theme_dir)
if not logo_path:
logging.warning("[~] favicon.ico not generated.")
return
try:
img = Image.open(logo_path).convert("RGBA")
output_path.parent.mkdir(parents=True, exist_ok=True)
img.save(output_path, format="ICO", sizes=[(16, 16), (32, 32), (48, 48)])
logging.info(f"[✓] favicon.ico generated in {output_path}")
except Exception as e:
logging.error(f"[✗] Error generating favicon.ico: {e}")