On Fri, 2014-11-07 at 17:36 +0100, Mario Torre wrote: > Hi all, > > I've been working on a strange issue recently, this seems to affect all > recent version of OpenJDK as well as Oracle JDK. > > The issue appears to be related to this change: > > http://hg.openjdk.java.net/jdk7u/jdk7u/jdk/rev/fbe9320339ea > > The issue as I could find by debugging OpenJDK is a mix of a couple of > things. > > This change was addressing postscript size explosion, where missing font > descriptor in version prior to this fix were causing characters to be > rendered as paths. > > The new code creates an actual descriptor array, so fonts can be > rendered directly by postscript. However, it seems that the postscript > code assumes ISO_8859_1 encoding, so if I pass some characters with, > say, umlaut, like 'ä', instead of creating a patch the character is > encoded as <c3a4> (which is correct ihmo) but then mapped to > ISOLatin1Encoding. > > This is a snippet of the generated postscript file, the file is > generated using a modified verion of the PrintSE.java test in OpenJDK: > > http://cr.openjdk.java.net/~neugens/psDieresisBug/PrintSEUmlauts.java > > /ISOF { > dup findfont dup length 1 add dict begin { > 1 index /FID eq {pop pop} {D} ifelse > } forall /Encoding ISOLatin1Encoding D > currentdict end definefont > } BD > /NZ {dup 1 lt {pop 1} if} BD > /S { > moveto 1 index stringwidth pop NZ sub > 1 index length 1 sub NZ div 0 > 3 2 roll ashow newpath} BD > 12.0 12 F > <c3a4> 7.44 100.0 100.0 S > pgSave restore > > I'm not really confident with Postscript at this level, so I would like > some hints of where to look for an actual fix. > > I have a workaround that seems to work, something like: > > GlyphVector gv = font.createGlyphVector(frc, "ä"); > g2d.drawGlyphVector(gv, 250, 220); > > which basically forces the glyph path again. And of course I could > revert the original change, but in either case it doesn't seem correct. > > My guess is that we should either somehow force ISO_8859_1 when calling > CharsetString[] makeMultiCharsetString from PSPrinterJob, or have a > proper fix for the Postscript file. > > Any idea of hint is very much appreciated. > > Cheers, > Mario > >
Ping? Mario
