shadlaws 9e20a30d22 #1969 - Give graphics events the ability to override the standard process. ...

While graphics_rotate, graphics_resize, and graphics_composite events already exist, they don't have the ability to *override* the standard process.
This makes it a bit tricky when you want to replace the standard procedure with another (e.g. use jpegtran to perform lossless jpg rotation).
Solution:
- make a temp filename.
- tell the events to use it as the output file.
- if an event makes something, use it and skip the standard process.

2013-01-27 21:55:24 +01:00

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