
    UAi              	       H    d dl mZ d dlmZ d dlZdZedddeded	ed
efdZ	y)    )Path)ImageN   T)	min_alphainplacesrc_pathr   r   returnc                   t        j                  |       }|j                  dvr| S |j                  d      }t	        j
                  |j                         d         }||kD  }|j                         s| S t	        j                  |      }|j                  d      \  }}	|j                  d      dz   \  }
}|	|||
fdd|j                  |j                  fk(  r| S |j                  |	|||
f      }|r|j                  | |j                         | S | j!                  | j"                   d| j$                         }|j                  ||j                         |S )	a?  
    Crops transparent padding from an image using alpha channel detection.

    - Works only for images with alpha (PNG, WEBP)
    - If no transparent border exists, image is unchanged
    - Returns the path to the cropped image (same path if inplace)

    Raises:
        ValueError if image has no alpha channel
    )RGBALAr   r   )axis   )format_cropped)r   openmodeconvertnparraysplitanyargwhereminmaxwidthheightcropsaver   	with_namestemsuffix)r   r   r   imgrgbaalphamaskcoordsy0x0y1x1croppedout_paths                 F/var/www/html/story-book/Story-Book-python-api/app/utils/image_crop.pycrop_transparent_canvasr/      s8   " **X
C
xx~%;;vDHHTZZ\"%&E 9D88:[[FZZQZFBZZQZ!#FB 	BBAq#))SZZ88iiRR()GXcjj1!!X]]O8HOO;L"MNHLL#**L-O    )
pathlibr   PILr   numpyr   ALPHA_THRESHOLDintboolr/    r0   r.   <module>r8      sF       %	00 0 	0
 
0r0   