gen_thumb()

  use CGI::Uploader::Transform::ImageMagick;

As a class method:

 ($thumb_tmp_filename)  = CGI::Uploader::Transform::ImageMagick->gen_thumb({
    filename => $orig_filename,
           w => $width,
           h => $height
    });

Within a CGI::Uploader "spec":

    gen_files => {
      my_thumb => gen_thumb({ w => $width, h => $height }),
    }

Looking for a different syntax? See "BACKWARDS COMPATIBILITY"

This function creates a copy of given image file and resizes the copy to the provided width and height.

"gen_thumb" can be called as object or class method. As a class method, there there is no need to call "new()" before calling this method.

Graphics::Magick is used as the first choice image service module. Image::Magick is tried next.

Input:

    filename - filename of source image
    w        - max width of thumbnail
    h        - max height of thumbnail

One or both of "w" or "h" is required.

Output:
- filename of generated tmp file for the thumbnail
- the initialized image generation object. (You generally shouldn't need this)