[bug #34529] gnustep-gui svn doesn't correctly link with ImageMagick

[Fred Kiefer]

Follow-up Comment #2, bug #34529 (project gnustep):

I am sure that this bug can be easily solved by some configuration magic, but
there is also a different solution possible. One that I would prefer. We could
move the ImageMagick code out of GNUstep gui into a filter service. A filter
service is basically a converter that takes its input from the pasteboard and
puts the result back there. NSImageRep is supposed to use filters to handle
unknown formats. We never included code for this, but Richard provided and
example implementation for a filter service:

devmodules/usr-apps/examples/gui/ExampleService/

For this suggestion to work two components are needed
- support for filtered images in NSImageRep and maybe NSBitmapImageRep
- the filter services themselves (I would not only put the ImageMagick stuff
into one, but add one for Ghostscript as well)


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