PADDLE_PDX_LOCAL_FONT_FILE_PATH controls only a single font's explicit location

[pechersky]

PaddleX/paddlex/utils/fonts.py

Lines 83 to 109 in a8ec0bd

	@property
	def path(self):
	# HACK: download font file when needed only
	if not self._local_path:
	self._get_offical_font()
	return self._local_path
	def _get_offical_font(self):
	"""
	Download the official font file.
	"""
	font_path = (Path(CACHE_DIR) / "fonts" / self._font_name).resolve().as_posix()
	if not Path(font_path).is_file():
	download(
	url=f"https://paddle-model-ecology.bj.bcebos.com/paddlex/PaddleX3.0/fonts/{self._font_name}",
	save_path=font_path,
	)
	self._local_path = font_path
	if Path(str(LOCAL_FONT_FILE_PATH)).is_file():
	logging.warning(
	f"Using the local font file(`{LOCAL_FONT_FILE_PATH}`) specified by `LOCAL_FONT_FILE_PATH`!"
	)
	PINGFANG_FONT = Font(font_name="PingFang-SC-Regular.ttf")
	SIMFANG_FONT = Font(font_name="simfang.ttf")

Ideally, one could specify a local fonts location directory. Otherwise, if one sets PADDLE_PDX_LOCAL_FONT_FILE_PATH, then that makes all the fonts use the same exact file.

If one wants to make it work now, one has to set CACHE_DIR instead via PADDLE_PDX_CACHE_HOME, which has larger efffects.

[TingquanGao]

Thanks for your feedback! We hadn’t considered supporting the configuration of multiple font files. Could you share in what scenarios you would need to set multiple different font files?

[pechersky]

In our hands, we might be hosting several different models using one process. For example, consider TextRecPredictor, where it chooses what font to use based on a model

PaddleX/paddlex/inference/models/text_recognition/predictor.py

Lines 113 to 121 in d824981

	def get_vis_font(self):
	if self.model_name.startswith(("PP-OCR", "en_PP-OCR")):
	return SIMFANG_FONT
	if self.model_name in (
	"latin_PP-OCRv3_mobile_rec",
	"latin_PP-OCRv5_mobile_rec",
	):
	return LATIN_FONT

If we only could configure one font, then what would happen is that all the models would use the same font.

When we do not configure CACHE_DIR or PADDLE_PDX_CACHE_HOME or PADDLE_PDX_LOCAL_FONT_FILE_PATH, then each font is downloaded using the _get_official_font codepath. We would prefer to provide the fonts up front.

[TingquanGao]

Thank you! I understand your request. However, this feature is not currently supported. We will evaluate it and consider adding support for it in future versions.

[TingquanGao]

The issue has no response for a long time and will be closed. You can reopen or new another issue if are still confused.

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