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    Âmœd±  ã                   @   s�   d Z ddlmZ ddlZddlmZ ddlZddlm	Z	m
Z
 ddlmZ ddlmZ e d	¡d
d„ ƒZdd„ ZG dd„ dƒZG dd„ deƒZdS )z7
Common functionality between the PDF and PS backends.
é    )ÚBytesION)Úsubseté   )Úfont_managerÚft2font)ÚAFM)ÚRendererBaseé2   c              
   C   s*   t | dƒ�}t|ƒW  5 Q R £ S Q R X d S )NÚrb)Úopenr   )ÚfnameÚfh© r   ú\/home/sam/Atlas/atlas_env/lib/python3.8/site-packages/matplotlib/backends/_backend_pdf_ps.pyÚ_cached_get_afm_from_fname   s    r   c              
   C   s�   t jddd�}| jdddg7  _|  d¡r2d|_t  | |¡�H}t j|d�}|j|d	� |  |¡ tƒ }|j	|d
d� |W  5 Q R £ S Q R X dS )aD  
    Subset a TTF font

    Reads the named fontfile and restricts the font to the characters.
    Returns a serialization of the subset font as file-like object.

    Parameters
    ----------
    symbol : str
        Path to the font file
    characters : str
        Continuous set of characters to include in subset
    T)Zglyph_namesZrecommended_glyphsZFFTMZPfEdZBDFz.ttcr   )Úoptions)ÚtextF)ZreorderTablesN)
r   ÚOptionsZdrop_tablesÚendswithZfont_numberZ	load_fontZ	SubsetterZpopulater   Úsave)ZfontfileÚ
charactersr   ÚfontZ	subsetterr   r   r   r   Úget_glyphs_subset   s    

r   c                   @   s(   e Zd ZdZdd„ Zdd„ Zdd„ ZdS )	ÚCharacterTrackerz²
    Helper for font subsetting by the pdf and ps backends.

    Maintains a mapping of font paths to the set of character codepoints that
    are being used from that font.
    c                 C   s
   i | _ d S ©N)Úused©Úselfr   r   r   Ú__init__?   s    zCharacterTracker.__init__c                 C   s<   |  |¡}| ¡ D ]$\}}| j |jtƒ ¡ t|ƒ¡ qdS )z:Record that string *s* is being typeset using font *font*.N)Z_get_fontmapÚitemsr   Ú
setdefaultr   ÚsetÚaddÚord)r   r   ÚsZchar_to_fontZ_cZ_fr   r   r   ÚtrackB   s    
zCharacterTracker.trackc                 C   s   | j  |jtƒ ¡ |¡ dS )zARecord that codepoint *glyph* is being typeset using font *font*.N)r   r    r   r!   r"   )r   r   Zglyphr   r   r   Útrack_glyphH   s    zCharacterTracker.track_glyphN)Ú__name__Ú
__module__Ú__qualname__Ú__doc__r   r%   r&   r   r   r   r   r   7   s   r   c                       sX   e Zd Z‡ fdd„Zdd„ Zdd„ Zdd„ Zd	d
„ Z‡ fdd„Zdd„ Z	dd„ Z
‡  ZS )ÚRendererPDFPSBasec                    s   t ƒ  ¡  || _|| _d S r   )Úsuperr   ÚwidthÚheight)r   r-   r.   ©Ú	__class__r   r   r   R   s    
zRendererPDFPSBase.__init__c                 C   s   dS )NFr   r   r   r   r   ÚflipyW   s    zRendererPDFPSBase.flipyc                 C   s   dS )NTr   r   r   r   r   Úoption_scale_image[   s    z$RendererPDFPSBase.option_scale_imagec                 C   s   t jd  S )Nzimage.composite_image)ÚmplÚrcParamsr   r   r   r   Úoption_image_nocomposite_   s    z*RendererPDFPSBase.option_image_nocompositec                 C   s   | j d | jd fS )Ng      R@)r-   r.   r   r   r   r   Úget_canvas_width_heightd   s    z)RendererPDFPSBase.get_canvas_width_heightc                    sð   |dkrt ƒ  |||¡S |r>| jj |d|¡}|j|j|jfS tj	| j
 r–|  |¡}| |¡\}}}}	}
| ¡ d }||9 }|	|9 }	|
|9 }
||	|
fS |  |¡}|j|dtjd� | ¡ \}}	| ¡ }
d}||9 }|	|9 }	|
|9 }
||	|
fS d S )NÚTeXéH   iè  g        )Úflagsg      �?)r,   Úget_text_width_height_descentZ
_text2pathZmathtext_parserÚparser-   r.   Údepthr3   r4   Z_use_afm_rc_nameÚ_get_font_afmZget_str_bbox_and_descentÚget_size_in_pointsÚ_get_font_ttfZset_textr   ZLOAD_NO_HINTINGZget_width_heightZget_descent)r   r$   ÚpropZismathr;   r   ÚlÚbÚwÚhÚdÚscaler/   r   r   r:   h   s,    


z/RendererPDFPSBase.get_text_width_height_descentc                 C   s   t j|d| jd�}t|ƒS )NZafm)ZfontextÚ	directory)r   ZfindfontZ_afm_font_dirr   )r   r@   r   r   r   r   r=   ‚   s      ÿzRendererPDFPSBase._get_font_afmc                 C   s2   t j |¡}t  |¡}| ¡  | | ¡ d¡ |S )Nr8   )r   ZfontManagerZ_find_fonts_by_propsZget_fontÚclearZset_sizer>   )r   r@   Úfnamesr   r   r   r   r?   ‡   s
    
zRendererPDFPSBase._get_font_ttf)r'   r(   r)   r   r1   r2   r5   r6   r:   r=   r?   Ú__classcell__r   r   r/   r   r+   M   s   r+   )r*   Úior   Ú	functoolsZ	fontToolsr   Z
matplotlibr3   Ú r   r   Z_afmr   Zbackend_basesr   Ú	lru_cacher   r   r   r+   r   r   r   r   Ú<module>   s   
!