Rails - Sep 2006 - Filecolumn resize help

Hi

I am using file column to upload and create some resized images however
I can''t figure out how to crop to a certain size.

What I want to do is take the uploaded image and create a thumb 110px x
85px. I want the thumb to be cropped and not be stretched.

I also want it to create a version 560px x 300px again cropping the
image and not stretching it.

The uploaded image will sometimes be taller and sometimes wider.

Is this possible using file_column?

Any help much appreciated, its starting to drive me crazy.

Thanks

Jono.


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Jono.Brain-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
wrote:
> Hi
>
> I am using file column to upload and create some resized images however
> I can''t figure out how to crop to a certain size.
>
> What I want to do is take the uploaded image and create a thumb 110px x
> 85px. I want the thumb to be cropped and not be stretched.
>
> I also want it to create a version 560px x 300px again cropping the
> image and not stretching it.
>
> The uploaded image will sometimes be taller and sometimes wider.
>
> Is this possible using file_column?
>
> Any help much appreciated, its starting to drive me crazy.
>
> Thanks
>
> Jono.
>   
I haven''t used the cropping ability yet but I think there are a couple 
of examples on the file_column and the rmagick website.  But, check out 
the following link that has a cropping example:
http://addictedtonew.com/archives/127/rotating-images-with-rmagick-and-ruby-on-rails/


Cheers
mohit.



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Jono.Brain@... <Jono.Brain@...> writes:
> What I want to do is take the uploaded image and create a thumb 110px x
> 85px. I want the thumb to be cropped and not be stretched.
> 
> I also want it to create a version 560px x 300px again cropping the
> image and not stretching it.
Assuming you have RMagick installed, this is easy :)

file_column :photo, :rmagick => {
          :versions => {
            :thumb => {:crop => "110:85", :size =>
"110x"}, # :size => "WWxHH"
                      # but either can be omitted if you want the other 
                      # dimension calculated
            :medium => {:crop => "28:15", :size =>
"560x"} # :crop is a ratio
                      # and cropping is done before resizing
          }
        }

Gareth


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Hi Gareth/Mohit

Thankyou for your replies, this now makes perfect sense, the Aspect
Ratio was confusing me before.

The code is at home so I will have to wait to try it, but I''m pretty
confident this will do the jobs nicely.

Thanks

Jono.



On 14/09/06, Gareth Adams
<gareth.adams-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>
> Jono.Brain@... <Jono.Brain@...> writes:
>
> > What I want to do is take the uploaded image and create a thumb 110px
x
> > 85px. I want the thumb to be cropped and not be stretched.
> >
> > I also want it to create a version 560px x 300px again cropping the
> > image and not stretching it.
>
> Assuming you have RMagick installed, this is easy :)
>
> file_column :photo, :rmagick => {
>           :versions => {
>             :thumb => {:crop => "110:85", :size =>
"110x"}, # :size => "WWxHH"
>                       # but either can be omitted if you want the other
>                       # dimension calculated
>             :medium => {:crop => "28:15", :size =>
"560x"} # :crop is a ratio
>                       # and cropping is done before resizing
>           }
>         }
>
> Gareth
>
>
> >
>
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