Graphos printing fix

Important Graphos fix.

Graphos had issues when printing and the view was not 100%: to speed up drawRect, all objects were represented scaled, so that they had not to be scaled each time, which especially for Bezier Paths is expensive with all the associated handles.

Thie issue is finally fixed by either caching both original and zoomed values for each object and conditionally drawing them depending on the drawingContext.

Here the proof with GSPdf showing the generated PDF!

Soon a new release then!

Native Print Preview in GNUstep

The upcoming GSPdf version can be used seamlessly to do Print Preview in GNUstep. The provision to do that has long been in GNUstep's printing code, but no application exploited it.

GSPdf is undergoing quite some restructuring and is now a true document-based application. This allows it to register properly for the post script viewing task. Activationg GhostScript's anti-aliasing is supported too (look at the screenshot, where Graphos itself is running without).

GSPdf is an interface to ghostscript as gv is, so the displayed quality should remain the same.