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import xml.etree.ElementTree as ET |
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import cairosvg |
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from pathlib import Path |
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def batch_render_kanji(xml_file_path, output_dir="kanji_images_rendered", size=256, bg_color="white"): |
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""" |
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Parses a full KanjiVG XML file and renders every kanji to a PNG image |
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with a specified background color. |
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Args: |
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xml_file_path (str or Path): Path to the kanjivg XML file. |
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output_dir (str or Path): Directory where the PNG images will be saved. |
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size (int): The width and height of the output PNGs in pixels. |
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bg_color (str): The background color for the image (e.g., 'white', '#FFFFFF'). |
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Set to None for a transparent background. |
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""" |
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output_path = Path(output_dir) |
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output_path.mkdir(exist_ok=True) |
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print(f"Output directory set to: {output_path.resolve()}") |
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if bg_color: |
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print(f"Background color set to: '{bg_color}'") |
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else: |
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print("Background is set to transparent.") |
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try: |
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print(f"Loading and parsing XML file: {xml_file_path}...") |
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tree = ET.parse(xml_file_path) |
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root = tree.getroot() |
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except ET.ParseError as e: |
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print(f"Fatal Error: Could not parse XML file. Details: {e}") |
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return |
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except FileNotFoundError: |
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print(f"Fatal Error: The file was not found at '{xml_file_path}'") |
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return |
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kanji_elements = root.findall('.//kanji') |
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total_kanji = len(kanji_elements) |
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print(f"Found {total_kanji} kanji elements to render.") |
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if total_kanji == 0: |
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print("No kanji elements were found. Please check the XML file content.") |
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return |
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for i, kanji_element in enumerate(kanji_elements): |
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kanji_id = kanji_element.attrib.get('id', f'unknown_{i}') |
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hex_codepoint = kanji_id.split('_')[-1] |
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g_element = kanji_element.find('{http://kanjivg.tagaini.net}g') or kanji_element.find('g') |
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if g_element is None: |
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print(f"[{i+1}/{total_kanji}] Skipping {kanji_id}: No drawable <g> element found.") |
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continue |
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g_string = ET.tostring(g_element, encoding='unicode') |
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svg_document = f'''<?xml version="1.0" encoding="UTF-8"?> |
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<svg width="{size}px" height="{size}px" viewBox="0 0 109 109" version="1.1" xmlns="http://www.w3.org/2000/svg"> |
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<g fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"> |
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{g_string} |
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</g> |
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</svg>''' |
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output_filename = output_path / f"U+{hex_codepoint}.png" |
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try: |
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cairosvg.svg2png( |
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bytestring=svg_document.encode('utf-8'), |
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write_to=str(output_filename), |
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background_color=bg_color |
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) |
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if (i + 1) % 100 == 0 or i == total_kanji - 1: |
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print(f"[{i+1}/{total_kanji}] Successfully rendered: {output_filename.name}") |
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except Exception as e: |
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print(f"[{i+1}/{total_kanji}] Failed to render {kanji_id}: {e}") |
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print("\nBatch rendering complete.") |
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if __name__ == "__main__": |
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image_directory = "kanji_images" |
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kanjivg_xml_path = "kanjivg-20220427.xml.xml" |
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image_size = 1024 |
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bg_color = "white" |
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batch_render_kanji(kanjivg_xml_path, image_directory, image_size, bg_color) |
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