Incorrect loading of patterns in ps file

[m anenbu]

When Inkscape is loading a ps file with patterns, there are two problems:

1. It's very slow.
2. Patterns don't show up properly. Open the attached eps in gv or any other ps viewer, you'll see a diagonal line made from circles of patterns. When opening in Inkscape, you either don't see the patterns (thus the circles) or see tiny bits and flashes of it when you zoom and drag it around the screen.

Inkscape 0.48.4 r9939 on Kubuntu 13.04 beta.

[Alvin Penner (apenner)]

- confirmed on Windows 7, Inkscape 0.48.4
- confirmed on Windows XP, Inkscape development build 12260.

- in 0.48.4 the results seem to depend on zoom level
- in recent trunk build, the circles in the diagonal pattern have a solid fill, no pattern, independent of zoom level

[jazzynico (jazzynico)]

1. Slowness confirmed on Windows XP, Inksape 0.48.4 and (even slower) with trunk revision 12276.
2. With 0.48.4, patterns are not rendered when loading the file, but sometimes partially rendered when zooming.
2b. With r12276, patterns show, but are considerably smaller than in the original Postscript file. With the default zoom level, it shows as if it were a solid fill, indeed. Note that the fill completely disappears with a very high zoom level (10000% and more).

[Alvin Penner (apenner)]

fix committed to rev 12450

this was essentially a sibling to Bug 530895