Thanks, as every. More information - I hope without overload.
I was trying to make a test suite... And failed depressingly...
I have a series of swf files that I'd like to position in exactly the
same location on a page.
Not all pages will have an swf on them.
The swf will be specific to that page.
Now I think need a layer to be able to position exactly - that is so
many pixels in and down from the top ('Paper' size is 1024 by 768) -
I don't know how to do this with overlays, and it seems to me that the
documentation suggests that layers are made for this job:
So I write:
\definepapersize[Screen][width=1024px,height=768px]
\setuppapersize[Screen][Screen]
\definelayer [SPTinteractivemedium] % name of the layer
[x=359px, y=140px, % from upper left corner of paper
width=642px, height=492px, repeat=yes] % let the layer be large
enough for the med swf
And then
\setupbackgrounds[page][state=page,background={SPTinteractivemedium}]
Then i the text I write
\starttext
Hello world, etc
\setlayer [SPTinteractivemedium] % name of the layer
[hoffset=0px, voffset=0px,] % placement (from upper left
corner of the layer)
{\externalfigure [plug][width=200px]} % the actual contents of
the layer
But when I get to a new page I'd like to be able to change that plug,
or even have the layer blank
So
\page[yes]
\setlayer [SPTinteractivemedium] % name of the layer
[hoffset=0px, voffset=0px,] % placement (from upper left
corner of the layer)
{ \externalfigure [dummy][width=100px]} % the actual contents
of the layer
And;
\page[yes]
\setlayer [SPTinteractivemedium] % name of the layer
[hoffset=0px, voffset=0px,] % placement (from upper left
corner of the layer)
{ \externalfigure ??????? } % HOW TO SET THE \externalfigure to
NOTHING, or hide the layer?
It seems this ought to be easy, but I tried guessing a 'state=page'
parameter in \setlayer... And trawling wiki, manuals. No joy.
I might try changing the backgrounds on a page by page basis, but this
seems inelegant, as the \setups ought to be before the \starttext..?
On 26 April 2011 13:35, Wolfgang Schuster
<[email protected]> wrote:
>
> Am 26.04.2011 um 12:33 schrieb Ian Lawrence:
>
>> I have a layer that I'd like to appear on some pages but not others,
>> and for which I'd like to switch the content by page. (I need the
>> layer to precisely and reliably locate some graphics.
>>
>> However, as I see it, you can only set the visibility of a layer in
>> \definelayer, \setupbackgrounds - and these ought to preceed
>> \starttext
>>
>> Any pointers / elegant suggestions / neat solutions?
>
>
> A better solution requires more information from you!
>
> \definelayer[test]
>
> \startsetups[test]
> \doifinset{\pagenumber}{1,3,7,10}{\setlayer[test][x=3cm,y=7cm]{\ssd Test:
> \test}}
> \stopsetups
>
> \setupbackgrounds[page][background=test,setups=test]
>
> \starttext
> \dorecurse{12}
> {\def\test{\convertnumber{A}{\recurselevel}}%
> \dontleavehmode\page}
> \stoptext
>
> Wolfgang
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