h97ddlZddlZddlmZddlmZddlmZmZm Z ddl m Z dZ dZ Gdd Zdd Zdd Zdd Zdd ZddZy)N)partial)BytesIO)Image ImageChops ImageFilter)utilsctj|}tj|}|r,t||z dz dkr||dzk\r||fS|dz}|||z fS||kDrd|fS|dfS)z Calculate the entropy of two slices (from the start and end of an axis), returning a tuple containing the amount that should be added to the start and removed from the end of the axis. g{Gz?r)r image_entropyabs) start_slice end_sliceslice difference start_entropy end_entropy half_slices J/home/dcms/DCMS/lib/python3.12/site-packages/easy_thumbnails/processors.py_compare_entropyr s'' 4M%%i0Ks=;6:;dB  "%< aZ 5:---{"%xaxc#jKtdD]!}tj|dD]}|#yw)z= Iterable to map a 16 bit grayscale image to 8 bits. N)range itertoolsrepeat)ijs r _points_tablers<3Z!!!S) AG s13c0eZdZfdZdZdZdZxZS) FrameAwarecFt|dddkDrt| |S|S)Nn_framesr )getattrsuper__new__)clsim __class__s rr&zFrameAware.__new__)s( 2z1 % )7?3' ' rc||_yN)r()selfr(s r__init__zFrameAware.__init__.s rcNg}t|jjD]4}|jj||j ||i|6t }|dj ||jjd|ddtj|S)NrTr formatsave_all append_images) rr(r#seekappendrsaver0ropen)r,methodargskwargs new_framesrwrite_tos rapply_to_frameszFrameAware.apply_to_frames1s tww''( 7A GGLLO   fd5f5 6 791  TWW^^d*UVUW.  zz(##rcZt|j|}t|j|Sr+)r$r(rr<)r,keyr7s r __getattr__zFrameAware.__getattr__<s%#&t++V44r)__name__ __module__ __qualname__r&r-r<r? __classcell__)r)s@rr!r!(s  $5rr!c |jdk(r,t|jtt d}t j |}|jdv}|j}|s|rd}nd}|rT|rLt|dds`|jdk7rt|jd}tjd|j|}|j|||}ng}t|jD]} |j| |jdk7rt|jd}tjd|j|}|j|||j!|t#} |d j%| |j&d |d d  tj(| S|dz}|j|k7rt|j|}|S)a: Convert images to the correct color space. A passive option (i.e. always processed) of this method is that all images (unless grayscale) are converted to RGB colorspace. This processor should be listed before :func:`scale_and_crop` so palette is changed before the image is resized. bw Make the thumbnail grayscale (not really just black & white). replace_alpha Replace any transparency layer with a solid color. For example, ``replace_alpha='#fff'`` would replace the transparency layer with white. IL)rFLARGB is_animatedFRGBAmaskrTr Nr/A)moder!pointlistrris_transparentr$convertrnewsizepasterr#r3r4rr5r0r6) r(bw replace_alphar9rQ is_grayscalenew_modebaseframesrr;s r colorspacer\As& ww#~^ ! !$}"7 =))"-N77k)LwwHr 2}e477f$#B//7Byy-@ 2B 'r{{+(AGGAJww&('^33F; 99VRWWmDDJJrJ+MM$' (#9q RYYVTUTVZzz(++#~H ww( ^ # #H - Irc |rtj|rFtjd|jd}|j ||j dn|jd}|jd}tjd|jd}tj||j}|rt|j|}|S)a$ Remove any unnecessary whitespace from the edges of the source image. This processor should be listed before :func:`scale_and_crop` so the whitespace is removed from the source image before it is resized. autocrop Activates the autocrop method for this image. rFrK) rrQrrSrTrUsplitrRrrgetbboxr!crop)r(autocropr9no_alpharVbgbboxs rrcrcs    #yybgg5H NN2BHHJrNN 3zz#H   c "YYsBGGS )$$R,446 B$$T*B Irc |jDcgc] }t|c}\}} |Dcgc] }t|c}\} } |s| r| s!t|dk(rdn| |z | dk(rdn| | z } n t |dk(rdn| |z | dk(rdn| | z } | st || z} n| st | | z} |r4|st || z} t | | z} d}| dt|zdz z} t jj} | dks| dkDrJ|rHt|jtt || ztt | | zf| }|ru|j\}} t|t || z }t| t | | z }|dk7r0|s|r+t|tr(tj d|}|r|j#}|r"|Dcgc]}|s|dk(r t|nd }}nd }t| d z t| d z }}t||dzdz }t| |d zdz }tdt || z ||z tdt | | z ||z g}|j%tt ||d| z|j%tt | |d | zt|txrtj d |}|rt'd|j#r|j#\}}}}|rGt t| t|zdz|}|r||z |d<||z |d <n||d<|||z z |d <|r>t t| t|zdz|}|r||z |d <| |z |d<n||d <| ||z z |d<n|dk(rdx}}|| } }|rot |t|dzd}!|j)|d||!z| f}"|j)||!z d|| f}#t+|"|#|!|\}$}%||$z }||%z}||$z |%z }|ro|rot |t|dzd}!|j)d||||!zf}"|j)d| |!z || f}#t+|"|#|!|\}$}%||$z }| |%z} ||$z |%z }|ro|||| f}t|j)|}|Scc}wcc}w#t$rt j} YwxYwcc}w)aD Handle scaling and cropping the source image. Images can be scaled / cropped against a single dimension by using zero as the placeholder in the size. For example, ``size=(100, 0)`` will cause the image to be resized to 100 pixels wide, keeping the aspect ratio of the source image. crop Crop the source image height or width to exactly match the requested thumbnail size (the default is to proportionally resize the source image to fit within the requested thumbnail size). By default, the image is centered before being cropped. To crop from the edges, pass a comma separated string containing the ``x`` and ``y`` percentage offsets (negative values go from the right/bottom). Some examples follow: * ``crop="0,0"`` will crop from the left and top edges. * ``crop="-10,-0"`` will crop from the right edge (with a 10% offset) and the bottom edge. * ``crop=",0"`` will keep the default behavior for the x axis (horizontally centering the image) and crop from the top edge. The image can also be "smart cropped" by using ``crop="smart"``. The image is incrementally cropped down to the requested size by removing slices from edges with the least entropy. Finally, you can use ``crop="scale"`` to simply scale the image so that at least one dimension fits within the size dimensions given (you may want to use the upscale option too). upscale Allow upscaling of the source image during scaling. zoom A percentage to zoom in on the scaled image. For example, a zoom of ``40`` will clip 20% off each side of the source image before thumbnailing. target Set the focal point as a percentage for the image if it needs to be cropped (defaults to ``(50, 50)``). For example, ``target="10,20"`` will set the focal point as 10% and 20% from the left and top of the image, respectively. If the image needs to be cropped, it will trim off the right and bottom edges until the focal point is centered. Can either be set as a two-item tuple such as ``(20, 30)`` or a comma separated string such as ``"20,10"``. A null value such as ``(20, None)`` or ``",60"`` will default to 50%. rg?TdgY@)resamplescalez(\d+)?,(\d+)?$2)rkrkr r z(?:(-?)(\d+))?,(?:(-?)(\d+))?$Nsmart )rTfloatintmaxminroundr ResamplingLANCZOSAttributeError ANTIALIASr!resize isinstancestrrematchgroupsr4filterrbr)&r(rTrbupscalezoomtargetr9vsource_xsource_ytarget_xtarget_yrjImage__Resampling__LANCZOSdiff_xdiff_yn focal_point halftarget_x halftarget_y focal_point_x focal_point_ybox edge_cropx_rightx_cropy_bottomy_cropoffsetlefttoprightbottomrstartendaddremoves& rscale_and_croprsXt-/GG4q%(4Hh*./Q#a&/Hh 88q=Ch&9q=Ch&9  q=Ch&9q=Ch&9  E)* E)* X-.HX-.HD #D /U**5%*%5%5%=%="  s{us{w^ " " x%'( )3uX5E/F+G H/#   WW(XHh 778XHh 778 7?&&#&"3V<#]]_FHNO1!qAvs1vB>O O$ ),X\):C1 9C ?@M;q> 9C ?@MAs8h. 0LMNAs8h. 0LMNC JJs3xQ():;< = JJs3xQ():;< ="4-"((143IVD)*:*:*<=4=4D4D4F16 XV!<!CVLF!'&A!)F!2A!'A!)Vf_!=A XV!<!CVLF!'&A!)F!2A!'A!)Vf_!=As ((vFaK(<=EGGT1dUlH$EFE''55=!UH"EFC"25#uf"MKCCKDVOE#c\F2FFaK(<=EGGQXsU{$CDE''1funh"GHC"25#uf"MKC3JCf$F#c\F2FS%0B$$S)B Ic5/< 5%*__"50Ps"S S"SS4S10S1c |r(t|jtj}|r(t|jtj}|S)z Pass the source image through post-processing filters. sharpen Sharpen the thumbnail image (using the PIL sharpen filter) detail Add detail to the image, like a mild *sharpen* (using the PIL ``detail`` filter). )r!rrDETAILSHARPEN)r(detailsharpenr9s rfiltersrJsC ^ " ";#5#5 6 ^ " ";#6#6 7 Irc |s|S|dr|ds|S|j\}}||dk\r ||dk\r|St|fd|i|}tjd||}|j|jk7r|j |j}|d|z dz|d|z dzf}t |dds|j|||Sg}t|jD]F} |j| |j} | j|||j| Ht} |dj| |jd|dd  tj | S) z Add borders of a certain color to make the resized image fit exactly within the dimensions given. background Background color to use rr rWrHr rIFTNr/)rTr\rrSrNrRr$rUrr#r3copyr4rr5r0r6) r(rT backgroundr9xynew_imrr[r copied_new_imr;s rrr]sc  7$q' 77DAqDG|T!W  B ;j ;F ;B YYudJ /F {{bgg(1gka $q'A+!!3 3F 2}e , R  r{{# )A GGAJ"KKMM   F + MM- (  ) 9q  RYYVABZ  zz(##r)FF)F)FFNNr+)rr| functoolsriorPILrrreasy_thumbnailsrrrr!r\rcrrrrrrsJ ..!*552;|:k\&'$r