B
    zb                 @   s   d dl Z ddlmZmZmZmZ ddlmZ G dd dZdd Z	d	d
 Z
dd ZdddZdddZdddZdddZdd ZdS )    N   )GimpGradientFileGimpPaletteFile
ImageColorPaletteFile)	deprecatec               @   sb   e Zd ZdZdddZedd Zejd	d Zd
d Zdd Z	dd Z
e
ZdddZdd ZdS )ImagePalettea  
    Color palette for palette mapped images

    :param mode: The mode to use for the palette. See:
        :ref:`concept-modes`. Defaults to "RGB"
    :param palette: An optional palette. If given, it must be a bytearray,
        an array or a list of ints between 0-255. The list must consist of
        all channels for one color followed by the next color (e.g. RGBRGBRGB).
        Defaults to an empty palette.
    RGBNr   c             C   sL   || _ d | _|pt | _d | _|dkrHtddd  |t| jkrHtdd S )Nr   zThe size parameter
   zwrong palette size)moderawmode	bytearraypalettedirtyr   len
ValueError)selfr   r   size r   /lib/python3.7/site-packages/PIL/ImagePalette.py__init__%   s    zImagePalette.__init__c             C   s   | j S )N)_palette)r   r   r   r   r   /   s    zImagePalette.palettec             C   sf   || _ t| j}i | _xJtdt| j|D ]4}t| j|||  }|| jkrPq*|| | j|< q*W d S )Nr   )r   r   r   colorsranger   tuple)r   r   Zmode_lenicolorr   r   r   r   3   s    

c             C   s<   t  }| j|_| j|_| jd k	r0| jd d  |_| j|_|S )N)r   r   r   r   r   )r   newr   r   r   copy?   s    
zImagePalette.copyc             C   s    | j r| j | jfS | j|  fS )z
        Get palette contents in format suitable for the low-level
        ``im.putpalette`` primitive.

        .. warning:: This method is experimental.
        )r   r   r   tobytes)r   r   r   r   getdataJ   s    zImagePalette.getdatac             C   s6   | j rtdt| jtr | jS td| j}| S )zUConvert palette to bytes.

        .. warning:: This method is experimental.
        z!palette contains raw palette dataB)r   r   
isinstancer   bytesarrayr   )r   Zarrr   r   r   r   U   s    zImagePalette.tobytesc          
   C   s  | j rtdt|tr| jdkrJt|dkrh|d dkrh|dd }n| jdkrht|dkrh|d7 }y
| j| S  tk
r } z,t| jt	st	| j| _
t| jd }d	}|r|jd
|jdf}x||kr|d7 }qW |dkrF|r2x<ttt| D ]$\}}|dkr
||kr
|}P q
W |dkrFtd||| j|< |d t| jk r| jd|d  t| | j|d d d  | _
n|  j
t|7  _
d| _|S d}~X Y nX ntdt| dS )zgGiven an rgb tuple, allocate palette entry.

        .. warning:: This method is experimental.
        z!palette contains raw palette datar	            NZRGBA)r'   r   Z
backgroundZtransparencyr      r   z$cannot allocate more than 256 colorszunknown color specifier: )r   r   r"   r   r   r   r   KeyErrorr   r   r   infogetreversedlist	enumerateZ	histogramr#   r   repr)r   r   ZimageeindexZspecial_colorsr   countr   r   r   getcolord   sH    








4zImagePalette.getcolorc          
   C   s   | j rtdt|tr"t|d}|d |d| j d xtdD ]}||  xdt|t| j |d t| j D ]>}y|d| j	|   W q~ t
k
r   |d	 Y q~X q~W |d qJW |  d
S )zVSave palette to text file.

        .. warning:: This method is experimental.
        z!palette contains raw palette datawz
# Palette
z# Mode: 
r(   r    z 0N)r   r   r"   stropenwriter   r   r   r   
IndexErrorclose)r   fpr   jr   r   r   save   s    


(zImagePalette.save)r	   Nr   )N)__name__
__module____qualname____doc__r   propertyr   setterr   r    r   Ztostringr3   r>   r   r   r   r   r      s   



4r   c             C   s   t  }| |_||_d|_|S )Nr   )r   r   r   r   )r   datar   r   r   r   raw   s
    rF   c             C   s:   g }| dkr2x(t dD ]}||| d  qW nt|S )Nr   r(   r'   )r   appendNotImplementedError)Zblackwhitelutr   r   r   r   make_linear_lut   s    rK   c             C   s8   g }x.t dD ]"}|t|d |  d d  qW |S )Nr(   g     o@g      ?)r   rG   int)ZexprJ   r   r   r   r   make_gamma_lut   s    "rM   r	   c                s4   t tdt  }|  t  fdd|D S )Nr(   c                s   g | ]}|t   qS r   )r   ).0r   )r   r   r   
<listcomp>   s    znegative.<locals>.<listcomp>)r-   r   r   reverser   )r   r   r   )r   r   negative   s    rQ   c             C   sD   ddl m} g }x(tdt|  D ]}||dd q"W t| |S )Nr   )randintr(   r'   )randomrR   r   r   rG   r   )r   rR   r   r   r   r   r   rS      s
    rS   #fff0c0c                s0   dd t | D  td fddtdD S )Nc             S   s   g | ]}t d |qS )r   )rK   )rN   Zbandr   r   r   rO      s    zsepia.<locals>.<listcomp>r	   c                s    g | ]} |d   |d   qS )r&   r   )rN   r   )bandsr   r   rO      s    i   )r   Zgetrgbr   r   )rI   r   )rU   r   sepia   s    rV   c                s,   t tdt  }t  fdd|D S )Nr(   c                s   g | ]}|t   qS r   )r   )rN   r   )r   r   r   rO      s    zwedge.<locals>.<listcomp>)r-   r   r   r   )r   r   r   )r   r   wedge   s    rW   c             C   sv   t | db}xZtjtjtjgD ]>}y |d || }|r@P W q ttfk
rZ   Y qX qW tdW d Q R X |S )Nrbr   zcannot load palette)	r8   r   r   r   seekZ
getpaletteSyntaxErrorr   OSError)filenamer<   ZpaletteHandlerrJ   r   r   r   load   s    

r]   )r	   )r	   )rT   )r	   )r$    r   r   r   r   Z
_deprecater   r   rF   rK   rM   rQ   rS   rV   rW   r]   r   r   r   r   <module>   s    


	

