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1. casperreiff
   Member
   Posted 4 months ago #

   When I upload a transparent PNG the background turns either white or black on the resized images

   http://wordpress.org/extend/plugins/user-photo/

2. anttyc
   Member
   Posted 4 months ago #

   hey, the User Photo plugin doesn't handle transparency. If you want you can modify the code a little.

   here is what you need to do(User Photo ver. 0.9.5.1)
   code taken from: http://wordpress.org/support/topic/plugin-user-photo-transparent-png-support?replies=4

   1. open "user-photo.php"
   2. find line 899
      

      elseif ( $info[2] == IMAGETYPE_PNG ) {
      			if (!imagepng( $imageresized, $newFilename ) ) {
      				$error = __( "Thumbnail path invalid" );
      			}
      		}

   3. change it to
      

      elseif ( $info[2] == IMAGETYPE_PNG ) {
                      	@ imageantialias($imageresized,true);
          			@ imagealphablending($imageresized, false);
          			@ imagesavealpha($imageresized,true);
          			$transparent = imagecolorallocatealpha($imageresized, 255, 255, 255, 0);
          			for($x=0;$x<$image_new_width;$x++) {
          				for($y=0;$y<$image_new_height;$y++) {
          					@ imagesetpixel( $imageresized, $x, $y, $transparent );
         			 		}
          			}
          			@ imagecopyresampled( $imageresized, $image, 0, 0, 0, 0, $image_new_width, $image_new_height, $info[0], $info[1] );
         			if (!imagepng( $imageresized, $newFilename ) ) {
      				$error = __( "Thumbnail path invalid" );
      			}
      		}

   4. Upload your photo again

3. casperreiff
   Member
   Posted 4 months ago #

   Thanks a lot, but it doesn't really work.
   Now it doesn't upload the photo at all.

   I'll just tell the client to make sure the image has a white background.

   Do you know if it supports transparent GIF from standard?

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