Under Strange Circumstances, Acrobat/Reader 7 (and other versions one would
presume) will incorrectly mangle radio/check fields.
Take the following field:
<</Type/Annot/F 4 /AP<<...>> /AS/Yes /Rect[...] /Subtype/Widget /DR<<...>>
/MK<</CA(þÿ l)>> /DA(/ZaDb 0 Tf 0 0 0 rg )>>
Looking at the /CA-ption, we see a Unicode string, with the value 'l'.
Viewers with this bug see a string with the value thorn-YThingy-null-l.
As only the first character of that string matters to radio/check appearance
generation, these viewers use the "thorn", which in zapf dingbats translates to
a weird double arrow (pointing right).
I'm not sure of the trigger here, or lots of people would have seen this bug a
Long Time Ago (unless it was introduced in a recent patch I suppose).
At any rate, the workaround:
Add a new method to PdfAnnotation:
public void setMKNormalCaptionMonoByte( String caption ) {
getMK().put( PdfName.CA, new PdfString( caption ) );
}
And change line 382 of RadioCheckField.java, revision 3117 (inside
getField(boolean isRadio)) to read:
field.setMKNormalCaptionMonoByte(text);
That's it. There's no need for a check/radio button to have a caption other
than the one to set it's 'check' shape. One could even go so far as to rename
CaptionMonoByte to something more check-shape specific and test the length of
'caption' to be sure it's one character long. Meh.
--Mark Storer
Senior Software Engineer
Cardiff.com
#include <disclaimer>
typedef std::disclaimer<Cardiff> DisCard;
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