2009/2/18 Koen Deforche <[email protected]>:
> Hey Frans,
>
> 2009/2/18 Frans Meulenbroeks <[email protected]>:
>> Hi,
>>
>> Sorry if I am asking too much n00b questions. I'm still in the learning
>> mode.
>>
>> I want to control the positioning of a widget. To test that I made an
>> application with only the following code:
>>
>> WAnchor *wan = new WAnchor("aa", "tst", root());
>> wan->setMargin(300, WWidget::Top);
>>
>> However, the setMargin does not work, the anchor still shows up at the top.
>> But if I use Left then the setMargin call works.
>>
>> Guess I am overlooking something obvious, but what?
>
> The wonderful(?!) rules of CSS...
>
> I am not a CSS expert (despite having meddled in it for a long time
> already), but CSS makes a big distinction between inline content
> (text, anchors, images, buttons, ...) and block-level content (divs,
> paragraphs, ...). Block-level contents can be manipulated better than
> inline content with respect to positioning. Still there are many rules
> about collapsing margins (which might plague you right now?).
>
> wan->setInline(false);
>
> You will find out that the easiest way to deal with the whole CSS
> insanity is to not try to program it (using the Wt API) but use an
> external stylesheet together with a lot of trial and error.
What I did in the past was a css in which I coded positions.
E.g. something like this:
div.item1 {
position: absolute;
left: 600px;
top: 150px;
color: #6B7584;
Then in the html file I wrote:
<div class="item1"> <a href="status.html" id="item1"></a>
Status
</div>
I had assumed something like this would be possible in WT as well.
BTW is there a good way to find out what the screen area of the
browser is (what area I can use without getting scrollbars)
Frans.
>
> The fastest trial and error is changing the styles with firebug, a
> plugin for firefox. But do not forget to ceck how IE handles it...
>
> >PS: one more Q: is it possible to find out the size of the browser area.
>> What I actually want is to control the position. (e.g. if I have 4
>> buttons or anchors, I would like to have them as
>> A B
>> C D
>> centered in the screen.
>>
>> Suggestions on how to do this are welcome! Frans.
>
> I have seen tricks, similar to how WDialog achieves this, on the
> Internet. The WDialog situation is a bit more complicated since it
> also needs to cover the other contents with a semi-opaque div. The
> solution had a different approach in compliant browsers than IE, but
> did not require any JavaScript (and thus no absolute dimensions). I'll
> see if I can dig it up again.
>
> Regards,
> koen
>
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