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Added a crude hack to increase the robustness of font scaling. (This can

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be necessary if printing unusually large components.)

- postscript.c: in "maxfont", if we get a zero-sized font, dodge the division
  by zero



git-svn-id: http://svn.openmoko.org/trunk/eda/fped@5752 99fdad57-331a-0410-800a-d7fa5415bdb3
This commit is contained in:
werner 2009-12-10 12:02:02 +00:00
parent c6312cd313
commit 2a819a82d7
1 changed files with 7 additions and 1 deletions
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8
postscript.c
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@ -891,16 +891,22 @@ fprintf(file,
/*
* Stack: font string width height factor -> factor
*
* Hack: sometimes, scalefont can't produce a suitable font and just
* gives us something zero-sized, which trips the division. We just
* ignore this case for now. Since maxfont is used in pairs, the
* second one may still succeed.
*/
fprintf(file,
"/sdiv { dup 0 eq { pop 1 } if div } def\n"
"/maxfont {\n"
" gsave 0 0 moveto\n"
" /f exch def /h exch def /w exch def\n"
" exch f scalefont setfont\n"
" false charpath flattenpath pathbbox\n"
" /ury exch def /urx exch def /lly exch def /llx exch def\n"
" w urx llx sub div h ury lly sub div 2 copy gt { exch } if pop\n"
" w urx llx sub sdiv h ury lly sub sdiv 2 copy gt { exch } if pop\n"
" f mul grestore } def\n");
/*