attachment_fu doesn't have cropping, I'm trying to bake some in using
ImageScience.
Firstly this requires the enabling of the '!' modifier in the
geometry.rb file. However in the to_s method I don't think it's
passing out the flags correctly. So I changed 'FLAGS[@flag.to_i]' to
'RFLAGS.index(@flag)' on line 47.
However now I need to change the logic in the
image_science_processor.rb file to recognise the "!" aspect flag and
then execute the crop and resize.
My issue is in doing two transformations, I don't really understand
what the &grab_dimensions argument passed to the with_crop and resize
methods is doing... please excuse my noob-ness.
I post my modified resize_image method to see if anyone can help...
def resize_image(img, size)
# create a dummy temp file to write to
self.temp_path = write_to_temp_file(filename)
grab_dimensions = lambda do |img|
self.width = img.width if respond_to?(:width)
self.height = img.height if respond_to?(:height)
img.save temp_path
callback_with_args :after_resize, img
end
size = size.first if size.is_a?(Array) && size.length == 1
if size.is_a?(Fixnum) || (size.is_a?(Array) && size.first.is_a?
(Fixnum))
if size.is_a?(Fixnum)
img.thumbnail(size, &grab_dimensions)
else
img.resize(size[0], size[1], &grab_dimensions)
end
else
new_size = [img.width, img.height] / size.to_s
# Added logic here
if size.ends_with? "!"
aspect = new_size[0].to_f / new_size[1].to_f
ih, iw = img.height, img.width
w, h = (ih * aspect), (iw / aspect)
w = [iw, w].min.to_i
h = [ih, h].min.to_i
# THIS IS WHERE THE ISSUE IS!
img.with_crop( iw/2-w/2, ih/2-h/2, iw/2+w/2, ih/2+h/2,
&grab_dimensions )
img.resize(new_size[0], new_size[1], &grab_dimensions )
else
img.resize(new_size[0], new_size[1], &grab_dimensions)
end
end
end
