a Sic#@sdZddlmZddlZddlZddlZddlZddlm Z m Z ddl m Z m Z ddlmZddl mZmZmZeeZee_e d Gd d d Ze d Gd d d eZe d GdddeZe d GdddeZGdddZdddddZdS)a0 A module for parsing a subset of the TeX math syntax and rendering it to a Matplotlib backend. For a tutorial of its usage, see :doc:`/tutorials/text/mathtext`. This document is primarily concerned with implementation details. The module uses pyparsing_ to parse the TeX expression. .. _pyparsing: https://pypi.org/project/pyparsing/ The Bakoma distribution of the TeX Computer Modern fonts, and STIX fonts are supported. There is experimental support for using arbitrary fonts, but results may vary without proper tweaking and metrics for those fonts. ) namedtupleN)_api _mathtext)FT2ImageLOAD_NO_HINTING)FontProperties) RasterParse VectorParseget_unicode_indexz3.6c@s@eZdZdZddZddZddZdd Zd d Zd d Z dS)MathtextBackenda The base class for the mathtext backend-specific code. `MathtextBackend` subclasses interface between mathtext and specific Matplotlib graphics backends. Subclasses need to override the following: - :meth:`render_glyph` - :meth:`render_rect_filled` - :meth:`get_results` And optionally, if you need to use a FreeType hinting style: - :meth:`get_hinting_type` cCsd|_d|_d|_dS)NrwidthheightdepthselfrO/var/www/html/django/DPS/env/lib/python3.9/site-packages/matplotlib/mathtext.py__init__6szMathtextBackend.__init__cCs||_||_||_dS)z(Set the dimension of the drawing canvas.Nr rwhdrrrset_canvas_size;szMathtextBackend.set_canvas_sizecCs tdS)z_ Draw a glyph described by *info* to the reference point (*ox*, *oy*). NNotImplementedErrorroxoyinforrr render_glyphAszMathtextBackend.render_glyphcCs tdS)zR Draw a filled black rectangle from (*x1*, *y1*) to (*x2*, *y2*). Nrrx1y1x2y2rrrrender_rect_filledHsz"MathtextBackend.render_rect_filledcCs tdS)zp Return a backend-specific tuple to return to the backend after all processing is done. Nrrboxrrr get_resultsNszMathtextBackend.get_resultscCstS)z\ Get the FreeType hinting type to use with this particular backend. )rrrrrget_hinting_typeUsz MathtextBackend.get_hinting_typeN) __name__ __module__ __qualname____doc__rrr!r'r*r+rrrrr %sr csTeZdZdZfddZddZfddZdd Zd d Zd d Z ddZ Z S)MathtextBackendAggz Render glyphs and rectangles to an FTImage buffer, which is later transferred to the Agg image by the Agg backend. cs0d|_d|_d|_d|_gd|_tdS)Nrbbox)rrrr)rrimagemoder1superrr __class__rrrcs  zMathtextBackendAgg.__init__cCsBt|jd|t|jd|t|jd|t|jd|g|_dS)Nrr)minr1maxr"rrr _update_bboxks zMathtextBackendAgg._update_bboxcs@t||||jdkrs.   79F