feat: add generation script for font sample images

generate_font_sample_image.py

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+import os
+from PIL import Image, ImageDraw, ImageFont
+from typing import List
+from font_dataset.font import load_fonts, DSFont
+from tqdm import tqdm
+
+os.makedirs("./demo_fonts", exist_ok=True)
+
+font_list, exclusion_rule = load_fonts()
+font_list: List[DSFont] = list(filter(lambda x: not exclusion_rule(x), font_list))
+font_list.sort(key=lambda x: x.path)
+
+width = 350
+height = 150
+font_size = 32
+
+
+def sample_text(font: DSFont) -> str:
+    if font.language == "ja":
+        return "こんにちは、世界\nフォント識別\nHello, world"
+    if font.language == "ko":
+        return "안녕하세요, 세계\n글꼴 인식하기\nHello, world"
+    if font.language == "zh-Hans":
+        return "你好，世界\n字体识别\nHello, world"
+    if font.language == "zh-Hant":
+        return "你好，世界\n字型辨識\nHello, world"
+    return "CJK字体\nCJKフォント\nCJK 글꼴"
+
+
+for i, font in tqdm(enumerate(font_list)):
+    img = Image.new("RGB", (width, height), (255, 255, 255))
+    font_obj = ImageFont.truetype(font.path, font_size)
+    draw = ImageDraw.Draw(img)
+    text_width, text_height = draw.textsize(
+        sample_text(font),
+        font=font_obj,
+        language=None if font.language == "CJK" else font.language,
+    )
+    x = (width - text_width) // 2
+    y = (height - text_height) // 2
+    draw.text((x, y), sample_text(font), font=font_obj, fill=(0, 0, 0))
+    img.save(f"./demo_fonts/{i}.jpg")