U
    QtcA                     @   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                   @   s|   e Zd ZdZdddZedd Zej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   4/tmp/pip-unpacked-wheel-h5vj885l/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   s   d | _ || _d S r   )_colorsr   )r   r   r   r   r   r   3   s    c                 C   sh   | j d krbt| j}i | _ tdt| j|D ]4}t| j|||  }|| j krRq,|| | j |< q,| j S )Nr   )r   r   r   ranger   tuple)r   Zmode_lenicolorr   r   r   colors8   s    


zImagePalette.colorsc                 C   s
   || _ d S r   )r   )r   r   r   r   r   r   D   s    c                 C   s<   t  }| j|_| j|_| jd k	r0| jd d  |_| j|_|S r   )r   r   r   r   r   )r   newr   r   r   copyH   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   tobytesr   r   r   r   getdataS   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.
        !palette contains raw palette dataB)r   r   
isinstancer   bytesarrayr"   )r   Zarrr   r   r   r"   ^   s    zImagePalette.tobytesc              
   C   s  | j rtdt|tr| jdkrRt|dkrp|d dkrDtd|dd }n| jdkrpt|dkrp|d	7 }z| j| W S  tk
r } z0t| jt	st	| j| _
t| jd }d
}|r|jd|jdf}||kr|d7 }q|dkrL|r8ttt| D ](\}}|dkr||kr|} q8q|dkrLtd||| j|< |d t| jk r| jd|d  t| | j|d d d  | _
n|  j
t|7  _
d| _| W Y S d}~X Y nX ntdt| dS )zgGiven an rgb tuple, allocate palette entry.

        .. warning:: This method is experimental.
        r$   r	            z/cannot add non-opaque RGBA color to RGB paletteNZRGBA)r+   r   Z
backgroundZtransparencyr      r   z$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   imageeindexZspecial_colorsr   countr   r   r   getcolorm   s\    









zImagePalette.getcolorc              
   C   s   | j rtdt|tr"t|d}|d |d| j d tdD ]|}||  t|t| j |d t| j D ]>}z|d| j	|   W qz t
k
r   |d	 Y qzX qz|d qH|  d
S )zVSave palette to text file.

        .. warning:: This method is experimental.
        r$   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#   r"   tostringr8   rC   r   r   r   r   r      s    






8r   c                 C   s   t  }| |_||_d|_|S )Nr   )r   r   r   r   )r   datar   r   r   r   raw   s
    rL   c                 C   s6   g }| dkr.t dD ]}||| d  qnt|S )Nr   r,   r+   )r   appendNotImplementedError)Zblackwhitelutr   r   r   r   make_linear_lut   s    rQ   c                 C   s4   g }t dD ]"}|t|d |  d d  q|S )Nr,   g     o@g      ?)r   rM   int)exprP   r   r   r   r   make_gamma_lut   s     rT   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>)r1   r   r   reverser   r   r   r   rX   r   negative   s    r\   c                 C   s@   ddl m} g }tdt|  D ]}||dd q t| |S )Nr   )randintr,   r+   )randomr]   r   r   rM   r   )r   r]   r   r   r   r   r   r^      s
    r^   #fff0c0c                    s0   dd t | D  td fddtdD S )Nc                 S   s   g | ]}t d |qS )r   )rQ   )rW   Zbandr   r   r   rY      s     zsepia.<locals>.<listcomp>r	   c                    s    g | ]} |d   |d   qS )r*   r   rV   Zbandsr   r   rY      s     i   )r   Zgetrgbr   r   )rO   r   r`   r   sepia   s    ra   c                    s,   t tdt  }t  fdd|D S )Nr,   c                    s   g | ]}|t   qS r   rU   rV   rX   r   r   rY      s     zwedge.<locals>.<listcomp>)r1   r   r   r   r[   r   rX   r   wedge   s    rb   c                 C   sv   t | db}tjtjtjfD ]B}z$|d || }|rBW  qhW q ttfk
r\   Y qX qtdW 5 Q R X |S )Nrbr   zcannot load palette)	r=   r   r   r   seekZ
getpaletteSyntaxErrorr   OSError)filenamerA   ZpaletteHandlerrP   r   r   r   load   s    

rh   )r	   )r	   )r_   )r	   )r(    r   r   r   r   Z
_deprecater   r   rL   rQ   rT   r\   r^   ra   rb   rh   r   r   r   r   <module>   s    '


	

