Rails - Apr 2006 - file_column and animated gifs

hi,

is it possible to resize animated gifs with file_column?
if i upload an animated gif file with file_column than the animation no 
longer exists...

-- 
Posted via http://www.ruby-forum.com/.

Hi folks,

I just started getting this error all of a sudden (command line snippet):

vmac:~/workspace/eir vince$ ruby -v
ruby 1.8.2 (2004-12-25) [powerpc-darwin8.0]
vmac:~/workspace/eir vince$ rails -v
Rails 1.0.0
vmac:~/workspace/eir vince$ gem -v
0.8.11
vmac:~/workspace/eir vince$ ./script/server
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
`require__'': No
such file to load -- initializer (LoadError)
        from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
`require''
        from ./script/../config/boot.rb:16
        from ./script/server:2:in `require''
        from ./script/server:2
vmac:~/workspace/eir vince$

Is anybody else having the same issue?  Any clues as to what may be wrong?
I did nothing to my environment, but the problem started after Mac OS X
notified me that updates were available and I started them in the
back-ground.


On 4/7/06 11:42 AM, "Trung Tran" <trung_tran@gmx.de> wrote:
> hi,
> 
> is it possible to resize animated gifs with file_column?
> if i upload an animated gif file with file_column than the animation no
> longer exists...

These instructions seem to have fixed the problem:
http://www.tonyarnold.com/articles/2005/08/10/rolling-with-ruby-on-rails-on-
mac-os-x-tiger-for-beginners




On 4/7/06 11:46 AM, "Vince Puzzella" <vpuz@rogers.com> wrote:
> Hi folks,
> 
> I just started getting this error all of a sudden (command line snippet):
> 
> vmac:~/workspace/eir vince$ ruby -v
> ruby 1.8.2 (2004-12-25) [powerpc-darwin8.0]
> vmac:~/workspace/eir vince$ rails -v
> Rails 1.0.0
> vmac:~/workspace/eir vince$ gem -v
> 0.8.11
> vmac:~/workspace/eir vince$ ./script/server
> /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
`require__'': No
> such file to load -- initializer (LoadError)
>         from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
> `require''
>         from ./script/../config/boot.rb:16
>         from ./script/server:2:in `require''
>         from ./script/server:2
> vmac:~/workspace/eir vince$
> 
> Is anybody else having the same issue?  Any clues as to what may be wrong?
> I did nothing to my environment, but the problem started after Mac OS X
> notified me that updates were available and I started them in the
> back-ground.
> 
> 
> On 4/7/06 11:42 AM, "Trung Tran" <trung_tran@gmx.de> wrote:
> 
>> hi,
>> 
>> is it possible to resize animated gifs with file_column?
>> if i upload an animated gif file with file_column than the animation no
>> longer exists...
> 
> 
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails

Yes, but you may have to tinker around with RMagick/imagemagick.  I
would *guess* that your image is being split into its component frames
as its being resized, and the command to merge the frames back into an
animation is not being given.  So that''s a bug you''ll have to
get
past, but then it should work.

-Kyle

On 4/7/06, Trung Tran <trung_tran@gmx.de> wrote:
> hi,
>
> is it possible to resize animated gifs with file_column?
> if i upload an animated gif file with file_column than the animation no
> longer exists...
>
> --
> Posted via http://www.ruby-forum.com/.
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>

Kyle Maxwell wrote:
> Yes, but you may have to tinker around with RMagick/imagemagick.  I
> would *guess* that your image is being split into its component frames
> as its being resized, and the command to merge the frames back into an
> animation is not being given.  So that''s a bug you''ll
have to get
> past, but then it should work.
> 
> -Kyle
thanks for reply kyle

now i just use Magick::ImageList instead of Magick::Image and it seems 
to work
so the class BaseUploadedFile looks something like this:

  class BaseUploadedFile # :nodoc:
    def transform_with_magick
      if needs_resize?
        begin
          imglist = ::Magick::ImageList.new(absolute_path)
        rescue ::Magick::ImageMagickError
          @magick_errors ||= []
          @magick_errors << "invalid image"
          return
        end

        ...

      end
    end

    ...

    def resize_image(imglist, img_options, dest_path)
      begin
        if img_options[:crop]
          dx, dy = img_options[:crop].split('':'').map { |x|
x.to_f }
          w, h = (imglist.first.rows * dx / dy), (imglist.first.columns 
* dy / dx)
          imglist.each do |img|
            img.crop!(::Magick::CenterGravity, [img.columns, w].min,
                           [img.rows, h].min)
          end
        end

        if img_options[:size]
          size = img_options[:size].split("x")
          xres = imglist.first.columns
          yres = imglist.first.rows
          if xres > size[0].to_i || yres > size[1].to_i
            imglist.each do |img|
              img.change_geometry!(img_options[:size]) do |c, r, i|
                i.resize!(c, r)
              end
            end
          end
        end
      ensure
        imglist.write dest_path
        File.chmod options[:permissions], dest_path
      end
    end
  end



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