NoMethodError: undefined method `hex_to_color' for #<ImageVoodoo:0x77bd0897>
from /Users/Petr/.rbenv/versions/jruby-1.7.20/lib/ruby/gems/shared/gems/image_voodoo-0.8.8/lib/image_voodoo/awt.rb:34:in `add_border'

hex_to_color is defined as class method...

Case 5 should be flip horizontally and rotate 90.
Case 8 is missing, which should be rotate 270.

Given this PNG input image:

and this code:

ImageVoodoo.with_image("test.png").bytes("JPG")

Results in this broken file:

Am I just doing something wrong here?

ImageVoodoo.with_bytes(ImageVoodoo.with_image("test.png").bytes("JPG")).format

returns JPG as expected

Hi!

In the project I'm using ImageVoodoo gem indirectly. It's a depedency of another gem: carrierwave_imagevoodoo (0.1.0-java)

We've recently upgraded imagevoodoo from 0.8.2 to 0.8.6 and this error started appearing:

NoMethodError (private method `save_impl' called for #<ImageVoodoo:0x54440629>):#012  app/services/foobar.rb:50

We don't use your gem directly (nor carrierwave).

Looks like one of 2 things happened and I'm not sure which one:

• you've modified public API in a patch release and that would be bad
• carrierwave (probably) is invoking a private method from your codebase - and the effect is bad as you may see

Please, do an analysis and/or fix if that's possible.

https://github.com/jruby/image_voodoo/blob/master/lib/image_voodoo.rb#L98

change 'calculate_thumbnail_dimentions' to 'calculate_thumbnail_dimensions'

Sometimes you can process image files without extension, so its handy to know, what is type of currently processed image. So it should return symbol :jpg, :png, :bmp, ... or maybe mime_type like image/jpg,... what do you think?

I have this simple rake task:

task :console do
  require 'image_voodoo'
  require 'irb'
  require 'irb/completion'

  ARGV.clear && ARGV.concat(['--prompt', 'simple'])
  IRB.start
end

Once I ran this task, it automatically runs Java application with empty window. So I loose focus from console, so then must switch windows etc... Can you prevent this? What is the reason to do that?

One of the very common tasks we must do on our server is to auto_orient images based on its EXIF. iOS devices are not rotating images "physically" but just changing its EXIF.

While we were using ImageMagick, we used --auto-orient flag which did this job perfectly. I was looking for any possible solutions with BufferedImage but it seems to be a hard one :/ Any suggestions?

I've been unable to find any docs for how to use this gem with paperclip under jruby. Are there any usage guides for this use-case?

Java Image APIs allow us to get most/all of the embedded data in an XML format (from what I remember). It would be nice to mixin an Exif module which can return this info.

http://en.wikipedia.org/wiki/Exchangeable_image_file_format

When I use the .quality(...) method and I'm saving a file as GIF I'm getting an error.

jruby-1.7.12 :026 > i=ImageVoodoo.with_image('/Users/ravbaker/Downloads/1.png')
 => #<ImageVoodoo:0x27ba52a2 @src=#<Java::JavaAwtImage::BufferedImage:0x556c08de>, @format="PNG", @quality=nil>
jruby-1.7.12 :027 > i.quality(0.85).save('/tmp/test2.png')
 => true
jruby-1.7.12 :028 > i.quality(0.85).save('/tmp/test2.gif')
Java::JavaLang::IllegalStateException: No compression type set!
    from javax.imageio.ImageWriteParam.setCompressionQuality(javax/imageio/ImageWriteParam.java:1244)
    from java.lang.reflect.Method.invoke(java/lang/reflect/Method.java:606)
    from RUBY.write_new_image(/Users/ravbaker/.rvm/gems/jruby-1.7.12/gems/image_voodoo-0.8.6/lib/image_voodoo/awt.rb:274)
    from RUBY.save_impl(/Users/ravbaker/.rvm/gems/jruby-1.7.12/gems/image_voodoo-0.8.6/lib/image_voodoo/awt.rb:260)
    from RUBY.save(/Users/ravbaker/.rvm/gems/jruby-1.7.12/gems/image_voodoo-0.8.6/lib/image_voodoo.rb:171)

I'm going to investigate it and fix it in next PR.

Currently 0.8.2 is the latest released gem, but the History file's latest entry is 0.8.0.

Produces empty instance <ImageVoodoo:0x75222006 @src=nil, @format="JPEG", @quality=nil> I think its time to cover this gem with proper tests...

image_voodo throws Unsupported Image Type exception when handling CMYK images.

It seems there's no way to set quality when saving jpegs. Which is quite important option, i think. Based on results its default value is 70% which is producing quite bad looking images, especially when processing photos....

Failing at [GEM_ROOT]/gems/image_voodoo-0.8.3/lib/image_voodoo.rb:158:in 'resize'

This issue is not happening on 0.8.2! It seems to be related to our new quality method. Its happening only when ImageVoodoo object is initialised using ImageVoodoo.with_bytes

original = ImageVoodoo.with_bytes(bytes_str) # bytes_str is response body of downloaded image
original.resize(trans_width, trans_height) do |transformed| # crashes here
  # ...
end