[REBOL] How to properly count lister size?

From: petr::krenzelok::trz::cz at: 25-Aug-2000 18:18

Hi,

I tried to parse out some website and wanted to display links together
with description and image in a list. However, - I am encountering some
problems using 'supply.

... btw: lists are the most difficult part of /View to understand. It's
mixed with listers and one has to know inners of /View face interface.
The worst and the least intuitive part is 'supply itself. Where does the
'count come from etc etc ...

So, let's say my list size is 500x400. I have 80 pixels wide rows:

    seznam: list 580x400 [
             across
;             img: image 100x100
             film: text 200x15 font [color: 1.1.251 shadow: none image:
none] [print film/text]
;             at 101x16
             desc: text 400x80 font [size: 10 color: 1.1.1 shadow: none]

             ] supply [
               count: count + num
               either (count <= length? titles) [
                    film/text: pick titles count
;                    img/image: load pick images count
                    desc/text: pick descriptions count
               ][ film/text: copy ""
;img/image: none
desc/text: copy ""

]

    ]

    at 610x50
    lista: slider 16x400 length? titles [print lista/data num:
lista/data - 1 show seznam]

So, length? titles returns 21. Once I scroll to the bottom of the
slider, it shows some binary??? strings ... Note: descriptions string
are large and don't fit in the 80 pixels wide rows ...

How to properly set slider size, please?

Thanks,
-pekr-

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