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45 lines
1.6 KiB
Python
Executable File
45 lines
1.6 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Generates versions of landing page images to be served in different conditions."""
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import glob
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import os
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import sys
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from pathlib import Path
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ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
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if ZULIP_PATH not in sys.path:
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sys.path.append(ZULIP_PATH)
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import pyvips
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LANDING_IMAGES_DIR = os.path.join(ZULIP_PATH, "static", "images", "landing-page", "hello")
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ORIGINAL_IMAGES_DIR = os.path.join(LANDING_IMAGES_DIR, "original")
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GENERATED_IMAGES_DIR = os.path.join(LANDING_IMAGES_DIR, "generated")
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def get_x_size(size: int, x: int) -> int:
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return int(x / 3.0 * size)
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def generate_landing_page_images() -> None:
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if not os.path.exists(GENERATED_IMAGES_DIR):
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os.mkdir(GENERATED_IMAGES_DIR)
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else:
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# Delete folder contents to avoid stale images between different versions of the script.
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for file in os.listdir(GENERATED_IMAGES_DIR):
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os.remove(os.path.join(GENERATED_IMAGES_DIR, file))
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for image_file_path in glob.glob(f"{ORIGINAL_IMAGES_DIR}/*"):
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file_name = Path(image_file_path).stem
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image = pyvips.Image.new_from_file(image_file_path)
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size = 2
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scaled_width = get_x_size(image.width, size)
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scaled_height = get_x_size(image.height, size)
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scaled = image.thumbnail_image(scaled_width, height=scaled_height)
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for format in ("webp[Q=60]", "jpg[Q=80,optimize-coding=true]"):
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scaled.write_to_file(f"{GENERATED_IMAGES_DIR}/{file_name}-{size}x.{format}")
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if __name__ == "__main__":
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generate_landing_page_images()
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