Issue 103400

Some glyphs in a PDF export are displaced with Burmese text using the Padauk font.

The fix for i100522 uses an abs to fix the problem with 180 degree rotated text.
This assumes that the glyphs are strictly in left to right order. However, the
abs also takes affect when you have a negative advance between two glyphs with
zero rotation causing incorrect positioning. A better fix would be to invert the
sign of the correction only in the case where the angle is really 180 (PI).


Index: vcl/source/gdi/pdfwriter_impl.cxx
===================================================================
--- vcl/source/gdi/pdfwriter_impl.cxx	(revision 272475)
+++ vcl/source/gdi/pdfwriter_impl.cxx	(working copy)
@@ -6680,7 +6680,9 @@
             appendHex( rGlyphs[nPos].m_nMappedGlyphId, aUnkernedLine );
             // check for adjustment
             double fTheoreticalGlyphWidth = rGlyphs[nPos].m_aPos.X() -
rGlyphs[nPos-1].m_aPos.X();
-            fTheoreticalGlyphWidth = fabs( fTheoreticalGlyphWidth ); //
#i100522# workaround until #i87686# gets fixed
+            // #i100522# workaround until #i87686# gets fixed
+            if (fAngle > M_PI - 0.005 && fAngle < M_PI + 0.005)
+                fTheoreticalGlyphWidth = -fTheoreticalGlyphWidth;
             fTheoreticalGlyphWidth = 1000.0 * fTheoreticalGlyphWidth / fXScale
/ double(nPixelFontHeight);
             sal_Int32 nAdjustment = rGlyphs[nPos-1].m_nNativeWidth -
sal_Int32(fTheoreticalGlyphWidth+0.5);
             if( nAdjustment != 0 )