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Support for embedded TeX expressions in Matplotlib.
Requirements:
* LaTeX.
* \*Agg backends: dvipng>=1.6.
* PS backend: PSfrag, dvips, and Ghostscript>=9.0.
* PDF and SVG backends: if LuaTeX is present, it will be used to speed up some
post-processing steps, but note that it is not used to parse the TeX string
itself (only LaTeX is supported).
To enable TeX rendering of all text in your Matplotlib figure, set
:rc:`text.usetex` to True.
TeX and dvipng/dvips processing results are cached
in ~/.matplotlib/tex.cache for reuse between sessions.
`TexManager.get_rgba` can also be used to directly obtain raster output as RGBA
NumPy arrays.
� N)�Path)�TemporaryDirectory)�_api�cbook�dviread��optionc C s& |durd|� d�nd}d| |d� S )a$
Output LaTeX code that loads a package (possibly with an option) if it
hasn't been loaded yet.
LaTeX cannot load twice a package with different options, so this helper
can be used to protect against users loading arbitrary packages/options in
their custom preamble.
N�[�]� z]\makeatletter\@ifpackageloaded{%(package)s}{}{\usepackage%(option)s{%(package)s}}\makeatother��packager � r r r �?/usr/local/lib/python3.9/dist-packages/matplotlib/texmanager.py�_usepackage_if_not_loaded' s �r c @ s0 e Zd ZdZe�d�Zej� e
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dddddd�Zddddddddddddd� Zejdd� �Zedd� �Zedd� �Zed5d d ��Zed d � �Zed!d"� �Zed#d$� �Zed%d&� �Zed d'�d(d)��Z ed*d+� �Z ed,d-� �Z ed6d.d/��Z ed7d1d2��Z ed8d3d4��Z!d S )9�
TexManagera
Convert strings to dvi files using TeX, caching the results to a directory.
The cache directory is called ``tex.cache`` and is located in the directory
returned by `.get_cachedir`.
Repeated calls to this constructor always return the same instance.
z3.8z tex.cache)�serif�
sans-serif�cursive� monospacez \renewcommand{\rmdefault}{pnc}z \renewcommand{\rmdefault}{pbk}z\usepackage{mathptmx}z\usepackage{mathpazo}z\usepackage{chancery}z\usepackage{charter}r z\usepackage{helvet}z\usepackage{avant}z\usepackage{courier}z\usepackage{type1ec})�new century schoolbook�bookman�times�palatino�
zapf chanceryr �charterr r � helvetica� avant garde�courierr �computer modern roman�computer modern sans serif�computer modern typewriterr r r r ) r r r r r r r r r r r r! c C s t | j�jddd� t�| �S )NT��parents�exist_ok)r � _texcache�mkdir�object�__new__��clsr r r r( k s zTexManager.__new__c C s� t jd }t|�dkr"|d �� nd}t|�dkrD|| jv rD|dfS t|�dkrh|| jv rh| j| dfS t�dd� | j�� d S dS )
z<Return the font family name and whether the font is reduced.� font.family� r NFTzXfont.family must be one of (%s) when text.usetex is True. serif will be used by default.z, )r F)
�mpl�rcParams�len�lower�_font_families�_font_preambles� _font_types�_log�info�join)r* �ffZff_valr r r � _get_font_family_and_reducedp s
�z'TexManager._get_font_family_and_reducedc
s( | � � \}}i � | jD ]�}|rD||krD| jtjd d �� � |< qtjd| D ]P}|�� | jv r�| j|�� � |< t�d||| j|�� � qqRt�d|� qRt�d|� | j| � |< q� fdd�d D �}|d
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k�rdn|dk�r dnd}||fS )Nr+ r zfont.z family: %s, font: %s, info: %sz&%s font is not compatible with usetex.zPNo LaTeX-compatible font found for the %s fontfamily in rcParams. Using default.c s h | ] }� | �qS r r )�.0�family�Z preamblesr r � <setcomp>� s �z<TexManager._get_font_preamble_and_command.<locals>.<setcomp>)r r r r z\usepackage{type1cm}�
r z \sffamilyr z \ttfamilyz \rmfamily) r8 r1 r2 r- r. r0 r4 �debugr5 �addr6 �sorted)r* Zrequested_familyZis_reduced_fontZ font_family�font�cmd�preamble�fontcmdr r; r � _get_font_preamble_and_command sH
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�z)TexManager._get_font_preamble_and_commandNc
C s� | � ||�t|� }t�|�d���� }t| j�}d\}}td|| |�D ] } |t|| | d � � }qJ|j ddd� t
j � ||�S )zU
Return a filename based on a hash of the string, fontsize, and dpi.
�utf-8)� rG r rG Tr" )
�_get_tex_source�str�hashlib�md5�encode� hexdigestr r% �ranger& �os�pathr6 )
r* �tex�fontsize�dpi�srcZfilehash�filepathZ num_lettersZ
num_levels�ir r r � get_basefile� s
zTexManager.get_basefilec C s | � � \}}|S )zU
Return a string containing font configuration for the tex preamble.
)rE )r* �
font_preamble�commandr r r �get_font_preamble� s z TexManager.get_font_preamblec C s
t jd S )z>Return a string containing user additions to the tex preamble.ztext.latex.preamble)r- r. r) r r r �get_custom_preamble� s z TexManager.get_custom_preamblec " C s� | � � \}}d| }d�ddddd|dd d
d d d
| �� ddtddd�ddtd�ddddddd |� d |� d �d d |� d!|� d �d"g �S )#z;Return the complete TeX source for processing a TeX string.g �?r= z\documentclass{article}z=% Pass-through \mathdefault, which is used in non-usetex modez>% to use the default text font but was historically suppressedz% in usetex mode.z \newcommand{\mathdefault}[1]{#1}z\usepackage[utf8]{inputenc}z.\DeclareUnicodeCharacter{2212}{\ensuremath{-}}z3% geometry is loaded before the custom preamble as z<% convert_psfrags relies on a custom preamble to change the z % geometry.z1\usepackage[papersize=72in, margin=1in]{geometry}z?% Use `underscore` package to take care of underscores in text.z?% The [strings] option allows to use underscores in file names.Z
underscore�stringsr z;% Custom packages (e.g. newtxtext) may already have loaded z"% textcomp with different options.Ztextcompz\pagestyle{empty}z\begin{document}z>% The empty hbox ensures that a page is printed even for emptyz=% inputs, except when using psfrag which gets confused by it.z;% matplotlibbaselinemarker is used by dviread to detect thez% last line's baseline.z
\fontsize{z}{z}%z!\ifdefined\psfrag\else\hbox{}\fi%�{� z\end{document})rE r6 r[ r )r* rQ rR rX rD Z baselineskipr r r rH � sB
�zTexManager._get_tex_sourcec C s. | � ||�d }t|�j| �||�dd� |S )zv
Generate a tex file to render the tex string at a specific font size.
Return the file name.
z.texrF )�encoding)rW r �
write_textrH )r* rQ rR �texfiler r r �make_tex� s
�zTexManager.make_tex��cwdc C s� t �t�|�� z$tj||d ur$|n| jtjd�}W n� tyn } z"t d|d � d��|�W Y d }~n`d }~0 tj
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N)rd �stderrz*Failed to process string with tex because r z could not be foundz�{prog} was not able to process the following string:
{tex!r}
Here is the full command invocation and its output:
{format_command}
{exc}
�unicode_escaperF �backslashreplace)�progZformat_commandrQ �exc)r4 r> r Z_pformat_subprocess�
subprocess� check_outputr% �STDOUT�FileNotFoundError� RuntimeError�CalledProcessError�formatrL �output�decode)r* rY rQ rd �reportri r r r �_run_checked_subprocess� s2 �
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z"TexManager._run_checked_subprocessc C s� | � ||�}d| }tj�|�s�t| �||��}t|�j}t|d��R}t|�}| jdddd|j � �|j � g||d� |t|�j �
|� W d � n1 s�0 Y |S ) zm
Generate a dvi file containing latex's layout of tex string.
Return the file name.
z%s.dvi)�dirZlatexz-interaction=nonstopmodez--halt-on-errorz--output-directory=rc N) rW rO rP �existsr rb �parentr rt �name�replace) r* rQ rR �basefile�dvifilera rd �tmpdirZtmppathr r r �make_dvi s
��2zTexManager.make_dvic
C s� | � |||�}d| }tj�|�s~| �||�}ddddt|�ddd||g
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Generate a png file containing latex's rendering of tex string.
Return the file name.
z%s.pngZdvipngz-bgZ Transparentz-Dz-TZtightz-oZ_called_from_pytestFz1.16r, z --freetype0) rW rO rP rv r} rI �getattrr- Z_get_executable_infoZ raw_version�insertrt )r* rQ rR rS rz �pngfiler{ rB r r r �make_png. s
� � zTexManager.make_pngc C s� |st jd }|s t jd }| �||�|f}| j�|�}|du r�| �|||�}t j�tj �
| j |��}|dd�dd�df | j|< }|S )zReturn the alpha channel.z font.sizez savefig.dpiN���) r- r. rH � _grey_arrayd�getr� �imageZimreadrO rP r6 r% )r* rQ rR rS �key�alphar� �rgbar r r �get_greyF s
zTexManager.get_grey�r r r c C sH | � |||�}t�g |j�d�R �}tj�|�|ddd�f< ||d< |S )a*
Return latex's rendering of the tex string as an RGBA array.
Examples
--------
>>> texmanager = TexManager()
>>> s = r"\TeX\ is $\displaystyle\sum_n\frac{-e^{i\pi}}{2^n}$!"
>>> Z = texmanager.get_rgba(s, fontsize=12, dpi=80, rgb=(1, 0, 0))
� .N� ).r� )r� �np�empty�shaper- �colorsZto_rgb)r* rQ rR rS Zrgbr� r� r r r �get_rgbaU s
zTexManager.get_rgbac C sz |� � dkrdS | �||�}|r*|�d�nd}t�|d| ��}|\}W d � n1 sZ0 Y |j|j|j |jfS )z-Return width, height and descent of the text.r r� g �?r, �H N)�stripr} Zpoints_to_pixelsr ZDvi�width�heightZdescent)r* rQ rR Zrendererr{ Z dpi_fractionZdvi�pager r r � get_text_width_height_descentf s $z(TexManager.get_text_width_height_descent)N)NN)NNr� )N)"�__name__�
__module__� __qualname__�__doc__r Z deprecate_privatize_attributeZtexcacherO rP r6 r- Z get_cachedirr% r� r1 r2 r3 � functools� lru_cacher( � classmethodr8 rE rW rZ r[ rH rb rt r} r� r� r� r� r r r r r 8 s~
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matplotlibr- r r r � getLoggerr� r4 r r r r r r �<module> s