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#!/usr/bin/env python
# Copyright (C) 2025 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
import json
import os
import shutil
import subprocess
import sys
import urllib.request
from pathlib import Path
def recommendations_root():
return (Path(__file__).parent / "../overview").resolve()
def recommendations_json():
return recommendations_root() / "recommendations.json"
def download_file(url, file_name):
if not os.path.isfile(file_name):
print(f"Fetching {url}")
urllib.request.urlretrieve(url, file_name)
def magick():
magick_tool = shutil.which("magick")
if magick_tool is None:
magick_tool = shutil.which("convert")
if magick_tool is None:
sys.exit("ImageMagick was not found in Path.")
return magick_tool
def convert_thumbnail(thumbnail_file_name, url, thumbnail_type):
temp_file_name = Path(thumbnail_file_name).stem + Path(url).suffix
download_file(url, temp_file_name)
is_blog_pic = thumbnail_type == "blogpost"
is_course_pic = thumbnail_type == "course"
size = (
# Learning::Internal::blogThumbSize
{"w": 450 * 2, "h": 192 * 2} if is_blog_pic else
# WelcomePageHelpers::WelcomeThumbnailSize
{"w": 214 * 2, "h": 160 * 2}
)
size_str = f"{size['w']}x{size['h']}"
command = [magick(), f"{temp_file_name}[0]"]
command.extend([
# https://imagemagick.org/script/command-line-options.php#filter
"-filter", "Mitchell",
# https://usage.imagemagick.org/resize/#fill
"-resize", f"{size_str}^",
"-gravity", "north",
"-extent", size_str,
])
if is_course_pic:
command.extend([
"+dither",
"-colors", "15",
# https://imagemagick.org/script/webp.php
"-define", "webp:lossless=true",
])
else:
command.extend([
# https://imagemagick.org/script/webp.php
"-define", "webp:use-sharp-yuv=1",
"-define", "webp:method=6",
])
command.append(recommendations_root() / thumbnail_file_name)
print(command)
try:
subprocess.check_call(command)
except subprocess.CalledProcessError:
print(f"Failed to convert to {thumbnail_file_name}.")
def main():
with open(recommendations_json(), encoding="utf-8") as json_data:
data = json.load(json_data)
for item in data["items"]:
if "thumbnailurl" in item:
convert_thumbnail(item["thumbnail"], item["thumbnailurl"],
item["type"])
return 0
if __name__ == '__main__':
sys.exit(main())
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