[poppler] Does poppler support rollover appearance of buttons?

[Carlos Garcia Campos]

El mar, 27-11-2007 a las 22:22 +1100, Brad Hards escribió:
> On Monday 26 November 2007 08:04:01 pm Carlos Garcia Campos wrote:
> > El lun, 26-11-2007 a las 06:35 +1100, Brad Hards escribió:
> > > On Monday 26 November 2007 01:48:52 am Francesco Pretto wrote:
> > > > This document [1] contains numerous features that apparently aren't
> > > > supported by poppler or the frontend I am using (evince). They do works
> > > > using official adobe reader. In particular, I'm interested in the
> > > > appearance change of the buttons when the mouse pointer roll over them
> > > > (in the document, the push-me button): is this feature intended to be
> > > > supported by poppler now (any version, stable or development)?
> > >
> > > That appears (on first glance) to show a Widget annotation.
> > >
> > > That should be supported by poppler in the main development branch (I
> > > don't think in 0.6).
> > >
> > > I'm not sure if evince exposes it though. I understand Okular should
> > > support it some time in KDE 4.
> >
> > hmm, is it implemented in the qt4 bindings? AFAIK form field
> > additional-actions are not supported by poppler core.
> OK, Here is the object in question
> 108 0 obj
> << 
> /Type /Annot 
> /Subtype /Widget 
> /Rect [ 202 299 248 312 ] 
> /BS << /S /B >> 
> /A << /T (Enhanced!)/S /Hide /H false >> 
> /MK << /RC (Me)/CA (Push)/BC [ 0 0 0 ] /AC (Thanks)/BG [ 0.753 0.753 0.753 ] 
> >> 
> /FT /Btn 
> /DA (/HeBo 12 Tf 0 0 1 rg)
> /Ff 65540 
> /T (showhidden)
> /H /P 
> /DR << /Font << /HeBo 112 0 R >> >> 
> /AP << /N 109 0 R /D 110 0 R /R 111 0 R >> 
> >> 
> endobj
> 
> I haven't tested this, so I don't know if it works, or is exposed correctly. 
> However based on reading of Annot::generateFieldAppearance(), poppler core 
> does have code to parse out the MK dictionary, BG, BC, and CA. I don't see 
> anything to handle RC (rollover caption) or AC (alternate caption).
> 
> I've never worked on this, and you can probably read the code at least as well 
> as I can. We take patches too :-)

you are right, I hadn't read the document and I thought it was an AA
(Adition Action), but it's a RC in the MK dict. This is not supported
yet, anyway. 

> Brad
> 
-- 
Carlos Garcia Campos
   elkalmail at yahoo.es
   carlosgc at gnome.org
   http://carlosgc.linups.org
PGP key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x523E6462
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