Not sure if this is what you mean, since you started out by describing the
situation for a template. But you can add a width parameter to the macros:
\define imgposter(img wid) [img width="$wid$" [$img$]]
\define poster(wd) <$macrocall $name=imgposter img={{!!poster}} wid=$wd$/>
which can be invoked as
<<poster 20px>>
On Tuesday, June 28, 2016 at 6:09:16 PM UTC-7, Jan wrote:
>
> Hi Mark,
> Thanks a lot, this was it. With your hint i made a version that can be
> called by <<poster>> if tagged as a macro.
>
> \define imgposter(img) [img[$img$]]
> \define poster() <$macrocall $name=imgposter img={{!!poster}}/>
>
> Now it would be perfect to be able to set an Imagewidth within this
> shorthand like <<poster(20px)>>
>
> My cryptic statement meant that I can't write the code into the field
> (like: poster:[img[path]) into the field but just path because it has to
> fit into the html videotag
>
> Thanks and Cheers Jan
>
>
> Am 28.06.2016 um 16:18 schrieb 'Mark S.' via TiddlyWiki:
>
> I don't understand what you mean by "it has to be just the paths".
>
> The following will show an image stored in a poster field.
>
>
> POSTER: <$macrocall $name=imgposter img={{!!poster}}/>
>
> Transclusion's are not real "Things", or at least that's not how they seem
> to work to me. They're kind of like asking the waiter to bring you a piece
> of toast, and instead he brings you a picture of a piece of toast. So, you
> can't really pass the result of transclusion, but instead you pass
> instructions for making the transclusion into an entity (a macro) that can
> combine the transclusion instructions with other instructions.
>
> The two ways that I know of to accomplish this is by using a set widget to
> set an environment variable, or by using the macro call widget to set a
> macro variable.
>
> Basically, whenever you find that you want to "pass" the results of a
> transclusion to something else (like an image clause), you almost always
> need a macro, where the results are passed as the argument in a macro call
> widget, or first set as an environmental variable using Set widget.
>
> I may not be understanding this properly, and would be open to a clearer
> explanations and/or techniques for dealing with problems like you've
> outlined here.
>
> Good luck!
> - Mark
>
>
> On Tuesday, June 28, 2016 at 4:03:08 AM UTC-7, Jan wrote:
>>
>> Hallo!
>> I want to build a template in which I transclude the imagelinks stored
>> in the field poster into an expression that renders the image.
>> It hast to be just the paths because I also have to use them in the
>> videotag.
>> How do you do this?
>> [img[{{!!poster}}]] [img{!!poster}]?
>>
>> Thanks and cheers
>> Jan
>>
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