U g@sddlmZmZddlmZmZddlmZddlm Z ddddgZ d Z d d Z ed d GdddZ ed d GdddZGdddZGdddZdS)) dataclassfield)DictOptional)generic)BasePdfFileWriter ShapeResult FontEngineFontSubsetCollectionFontEngineFactoryABCDEFGHIJKLMNOPQRSTUVWXYZcs$ddldfddtdDS)Nrc3s|]}tddVqdS)rN)ALPHABETrandint).0_random>/tmp/pip-unpacked-wheel-owvgwkas/pyhanko/pdf_utils/font/api.py sz)generate_subset_prefix..)rjoinrangerrrrgenerate_subset_prefixsrT)frozenc@sBeZdZUeed<eedZee edfed<edddZ dS) r base_postscript_name)default_factoryr subsetsreturncCst}||jkr|SqdSN)rr)selfprefixrrr add_subset#s zFontSubsetCollection.add_subsetN) __name__ __module__ __qualname__str__annotations__rdictrrrr%rrrrr s c@s*eZdZUdZeed<eed<eed<dS)rz#Result of shaping a Unicode string.Z graphics_opsZ x_advanceZ y_advanceN)r&r'r(__doc__bytesr*floatrrrrr*s c@sXeZdZdZdeeedddZeddZ ee dd d Z e j d d d ZddZdS)r z4General interface for text shaping and font metrics.N)writerrembedded_subsetcCsB||}|r||_}n d|_}||j|<||_||_dSr")Zget_subset_collectionr%Z subset_prefixrr/ obj_stream)r#r/rr0r1Zfscr$rrr__init__=s   zFontEngine.__init__cCsdS)a If ``True``, this font engine expects the line matrix to always be equal to the text matrix when exiting and entering :meth:`shape`. In other words, the current text position is where ``0 0 Td`` would move to. If ``False``, this method does not use any text positioning operators, and therefore uses the PDF standard's 'natural' positioning rules for text showing operators. The default is ``True`` unless overridden. Trr#rrruses_complex_positioningMsz#FontEngine.uses_complex_positioning)txtr!cCstdS)zRender a string to a format suitable for inclusion in a content stream and measure its total cursor advancement vector in em units. :param txt: String to shape. :return: A shaping result. NNotImplementedError)r#r5rrrshape]s zFontEngine.shaper cCstdS)aConvert a :class:`.FontEngine` to a PDF object suitable for embedding inside a resource dictionary. .. note:: If the PDF object is an indirect reference, the caller must not attempt to dereference it. In other words, implementations can use preallocated references to delay subsetting until the last possible moment (this is even encouraged, see :meth:`prepare_write`). :return: A PDF dictionary. Nr6r3rrr as_resourcehszFontEngine.as_resourcecCsdS)z Called by the writer that manages this font resource before the PDF content is written to a stream. Subsetting operations and the like should be carried out as part of this method. Nrr3rrr prepare_writexszFontEngine.prepare_write)N)r&r'r(r,rr)boolr2propertyr4rr8rZ PdfObjectr9r:rrrrr :s   c@seZdZddedddZdS)r Nr)r/r!cCstdSr"r6)r#r/r1rrrcreate_font_enginesz$FontEngineFactory.create_font_engine)N)r&r'r(r r=rrrrr s N)Z dataclassesrrtypingrrZpyhanko.pdf_utilsrZpyhanko.pdf_utils.writerr__all__rrr rr r rrrrs   I