Oh, yes, I almost forgot: I'm removing the "dy" parameter for now since it's not supported anyway until we support different writing-modes. Doesn't make sense to keep that around until then.
On 03.02.2009 11:10:03 Jeremias Maerki wrote: > I'm getting near to finishing my work on the new intermediate format. > Logically, performance tests have to show whether the goals have been > achieved. Generally, they have: > - Rendering directly from the new intermediate is a lot faster than from > the old area tree XML format. > - The new intermediate files are also a lot smaller. > - New output formats are much easier to implement than the old Renderers. > > However, the performance tests showed that the improvement for the > PostScript output was rather small (and that's one of the most important > formats in that context). The cause was my simplistic approach to glyph > positioning (using the xshow operator). It causes at least one > DecimalFormat.format() call per glyph even if the text has no kerning, > letter/wordspacing or justification. So I had to revise my decision to > simply carry a "dx" (from SVG) property with glyph offsets. Adding SVG's > letter-spacing and word-spacing attributes made it possible to keep dx > to null in many cases. Furthermore, a custom text painting operator in > PostScript (similar to PDF's TJ) allowed much more compact PostScript > code and brought the performance back in the region of PDF and AFP. > > So, IFPainter.drawText will get two new parameters letterSpacing and > wordSpacing. I'm currently updating the rest of the output formats in a > similar way (for example, PDF gets to use the Tc operator for > letter-spacing). AFP will also profit from that. I'll commit when > everything's working again. > > I'll also publish performance figures when this is done. > > Jeremias Maerki > Jeremias Maerki
