Re: pdfstartview

[Hans Hagen <pragma@wxs.nl>]

� wrote:
> On Wed, 1 Feb 2006, Hans Hagen wrote:
>
>   
>> \setupinteraction[state=start,focus=width,openaction=FitWidth] 
>>     
>
> Hello Hans,
> this works (but not in fullscreen mode).
> But "openaction=FitBH" does not work... :(
>
> I don't know, how it's done in LaTeX, but it has always worked during the
> last 5 years independently of the version of acroread.
>   
hm, i wonder, since it's a bunch of conflicting specs; also, openaction has not been around from the start of pdf (and got more robust later), and access to the page object number in pdftex is pretty recent 

as with many of such features, it has always been possible to cook up something that workes for the latest pdftex and the latest viewer, but if one uses odl and new docs/viewers intermixed there were always penalties. The same is true for more features. Only with acrobat 5 pdf became a bit more stable 

also keep in mind that context has chained annotation support as well as some other features that make it tricky to use certain tricks; in the deiver files you will find some workarounds, like adding quotes around destinations on order to make sure that acrobat 3 does not ignore them - it simply assumed some funny first char sort order in named destination, probably some optimization; or special treatment or spaces or ...

other tricky areas are for instance widgets: context has always built the datastructures needed, and i'm sure not every tex package does that, thereby just depending on the recovery capabilities of acrobat (it indeed reconstructs fields arrays at startup) but context could not depend on that because it supports clones and copies of fields right from the start 

similar weirdness happens (happened) with javascripts: the spec supported a list of scripts, while viewers didn't; and then we don't even talk about initialization ... so, again, it's no problem to get something working for a certain version, but i always want to make sure that we are as backward compatible as possible 

or take special resources (related to plugins) .... keeps changing, never works 100% in the first release of a reader, so i more or less decided that, apart from some playing around, its best to wait till N.0.2 or higher -) 

Hans 

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                                          Hans Hagen | PRAGMA ADE
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