A Python rewrite of chenglou/pretext — fast, accurate, and concise text measurement and layout.
This project uses another project of mine: intl-segmenter-py.
Due to technical reasons, setting locales is not currently supported. Therefore, we additionally provide a way to customize the Segmenter; see custom_segmenter.md.
If you have any information on fully implementing Intl.Segmenter, please let me know.
Only a simple implementation using pygame is provided in pretext_py/py_canvas. Therefore, when using this project, you should also replace the measureText implementation; see custom_canvas.md.
Only two tests in pretext_py/layout_test.py currently fail, because the built‑in Intl.Segmenter still has minor differences from the JavaScript version.
Currently two demos have been ported:
- dragon_fast.py – Due to font and pygame limitations, some characters (e.g., Arabic and emoji) may not render correctly.
- editorial_engine.py – Renders very well with excellent visual effects.
使用 Python 重写的 chenglou/pretext —— 快速、准确、简洁的文本测量与布局。
使用了我的另一个项目：intl-segmenter-py。
由于技术原因，暂不支持 locales 的设置，因此我们额外提供了自定义 Segmenter 的方法，详见 custom_segmenter.md。
如果你有关于完整实现 Intl.Segmenter 的任何信息，欢迎告知我。
仅在 pretext_py/py_canvas 中使用 pygame 进行了简单实现，因此在使用本项目时，您也应替换 measureText 的实现，详见 custom_canvas.md。
pretext_py/layout_test.py 中仅有两个测试未通过，因为内置的 Intl.Segmenter 与 JavaScript 版本仍存在些许差异。
目前还原了两个示例：
- dragon_fast.py – 由于字体和 pygame 的限制，部分文字（如阿拉伯语和 emoji）可能无法正常渲染。
- editorial_engine.py – 渲染效果非常出色，视觉效果极佳。