Re: [e4-dev] css

[Tom Schindl <tom.schindl@xxxxxxxxxxxxxxx>]

Hi Ann,

You have to distinguish between:
a) CSS as a Language (e.g. selectors, pseudo-selectors,...)
b) CSS-properties

We only support the very basic attributes like font, color, background
color (including some paint types), ... and some custom ones (for
CTabFolder).

I've sent a mail to this list after we shipped 4.1 where I highlight
some problems with our current css treatment because we are not
following general rules here (e.g. it is good practice to prefix custom
attributes using -vendor (e.g. -moz, -webkit,...)) and our own SDK-CSS
is not even valid CSS because the selector some of the selectors defined
are simply invalid if you read the css spec.

Sad enough I didn't get a response on it.

My personal opinion on CSS is that we advertised it completely wrong
because people now think they can apply all CSS-Properties they can in
HTML which is far from true because naturally SWT has constraints we are
not able to overcome.

I think in reality only toolkits who completely draw the UI (like Swing,
JavaFX, Browser-Rendering-Engines) are able to fully implement
CSS-Properties but as said that's my personal opinion and others may
disagree.

Tom

Am 15.08.11 19:40, schrieb Ann Smith:
> Thank you Angelo that information is very helpful. For example for
> shadows on my labels can I use this property within my application?
> I am building a GUI and some of CSS2 support is ran from a browser
> window. or can you direct me to any tutorials or projects that are GUI
> based and have used CSS2?
> 
> Regards,
> Ann.
> 
> On Mon, Aug 15, 2011 at 6:33 PM, Angelo zerr <angelo.zerr@xxxxxxxxx
> <mailto:angelo.zerr@xxxxxxxxx>> wrote:
> 
>     Hi Ann,
> 
>     Just for your information, E4 CSS engine is based on W3C SAC Parser
>     API http://www.w3.org/Style/CSS/SAC/ to load CSS style properties.
>     The implementation used by E4 CSS engine is batik which supports
>     CSS2 (not CSS3). Problem with CSS3 that it doesn't exists Java
>     implementation for CSS3 (not for CSS2). Once it will exists CSS3
>     implementation (SAC Parser), it will be easy to use it without
>     changing E4 CSS engine to use CSS3.
> 
>     Regards Angelo
> 
> 
>     2011/8/15 Ann Smith <annsmith.smith38@xxxxxxxxx
>     <mailto:annsmith.smith38@xxxxxxxxx>>
> 
>         Thanks that is exactly what I was looking for. Do you call the
>         CTabFolder within the CSS files? or is there any tutorials out
>         there?
> 
>         Thanks for your help,
>         Ann
> 
> 
>         On Mon, Aug 15, 2011 at 4:18 PM, Bogdan Gheorghe
>         <gheorghe@xxxxxxxxxx <mailto:gheorghe@xxxxxxxxxx>> wrote:
> 
>             Hi Ann -
> 
>             Currently it is mainly css2 support with a number of custom
>             properties for CTabFolder. You can find these here:
>             _http://wiki.eclipse.org/E4/CSS/SWT_Mapping_
> 
>             Regards,
>             B
> 
> 
>             From: 	Ann Smith <annsmith.smith38@xxxxxxxxx
>             <mailto:annsmith.smith38@xxxxxxxxx>>
>             To: 	E4 Project developer mailing list <e4-dev@xxxxxxxxxxx
>             <mailto:e4-dev@xxxxxxxxxxx>>
>             Date: 	08/12/2011 04:43 AM
>             Subject: 	[e4-dev] css
>             Sent by: 	e4-dev-bounces@xxxxxxxxxxx
>             <mailto:e4-dev-bounces@xxxxxxxxxxx>
> 
> 
>             ------------------------------------------------------------------------
> 
> 
> 
>             Hi,
>              
>             Just wondering does e4 support css3 if using a stand alone
>             GUI? or is it only css2?
>              
>             Ann._______________________________________________
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