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Slides from EclpseCon 2011 [message #925463] Thu, 27 September 2012 18:46 Go to next message
Kris Missing name is currently offline Kris Missing nameFriend
Messages: 47
Registered: July 2009
Member
Hi,

is it possible to get the slides that have been presented at EclipseCon
2011 about Vex? It was not possible to visit the conference

Also, I have seen on the New and Noteworthy page that Vex has Image
support. How does this support look like? E.g. for an XHTML doc, is it
enough to add a img element with src-attribute that contains a relative
link to the image?

Thanks
Kris
Re: Slides from EclpseCon 2011 [message #926211 is a reply to message #925463] Fri, 28 September 2012 12:15 Go to previous messageGo to next message
Holger Voormann is currently offline Holger VoormannFriend
Messages: 16
Registered: July 2009
Junior Member
Hi Kris,

Samples and snippets of Florian's Vex EclipseCon Europe 2011 talk (which are more important than the slides) are at GitHub: github.com/ftl/ece2011

Yes, in XHTML the path of the image to show are specified by the src attribute of the img element. This is done via CSS:
img {
  background-image: attr(src);
  height: attr(height);
  width: attr(width);
}

In CSS you could either directly specify the path of the (background) image (same image for all matching elements) or delegate to an attribute value (attr(...)).
Re: Slides from EclpseCon 2011 [message #932025 is a reply to message #926211] Wed, 03 October 2012 19:05 Go to previous messageGo to next message
Kris Missing name is currently offline Kris Missing nameFriend
Messages: 47
Registered: July 2009
Member
Hi Holger,

thanks for the info on the examples from the talk. They helped me to
understand the vex editor a little better.

What I am still struggling with is the display of images. The inline
display (img height = line height) is OK, but the display of images that
shall have their original size - I don't get it to work.

Is there an xhtml example that shows how to display images non inline,
e.g. what you can see here:
http://wiki.eclipse.org/Vex/NewAndNoteworthy#1.0.0_M3_.282010-11-08.29
(the big image)?

In Bug 298912 the following is mentioned
(https://bugs.eclipse.org/bugs/show_bug.cgi?id=298912#c30):

"In block elements, Vex tries to show the image in its original size,
but scales it to the width of the containing element, if the image is
bigger."

I am not sure whether my tests have properly set a "block element" in
xhtml strict. E.g. what I tried is:

<?xml version='1.0'?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Test</title>
</head>
<body>
<p>Text Text Text</p>
<div>
<img src="eclipse-vex-page.png"></img>
</div>
<p/>
</body>
</html>

As style I am using the "XHTML plain" as part of vex editor. This css
has the definition:

div {
display: block;
}

So I think this is a proper interpretation for a block element in xhtml
with the used css. However the image displayed is limited to the line
height although it is far bigger in height an width as displayed.

What I also tried is giving the img tag in the xhtml in the style
attribute the "display: block" directly; unfortunately with no effect...

To cut the long story short - what must one do to display images in
xhtml as block element having its original size?

Thanks
Kris


Am 28.09.12 14:15, schrieb Holger Voormann:
> Hi Kris,
>
> Samples and snippets of Florian's Vex EclipseCon Europe 2011 talk (which
> are more important than the slides) are at GitHub: github.com/ftl/ece2011
>
> Yes, in XHTML the path of the image to show are specified by the src
> attribute of the img element. This is done via CSS:
> img {
> background-image: attr(src);
> height: attr(height);
> width: attr(width);
> }
> In CSS you could either directly specify the path of the (background)
> image (same image for all matching elements) or delegate to an attribute
> value (attr(...)).
Re: Slides from EclpseCon 2011 [message #934012 is a reply to message #932025] Fri, 05 October 2012 15:06 Go to previous messageGo to next message
Holger Voormann is currently offline Holger VoormannFriend
Messages: 16
Registered: July 2009
Junior Member
Hi Kris,

The image belongs to the img element which is an inline (and not a block) element. It seems, the image support for inline elements is incomplete.

Could you please open a bug: https://bugs.eclipse.org/bugs/enter_bug.cgi?product=Mylyn%20Docs%20Vex

Thx,
Holger
Re: Slides from EclpseCon 2011 [message #946971 is a reply to message #934012] Tue, 16 October 2012 17:37 Go to previous message
Kris Missing name is currently offline Kris Missing nameFriend
Messages: 47
Registered: July 2009
Member
Hi Holger,

sorry for the delay in my response - the last days have been very very
busy.

I got it working now with the following:

<img class="blockstyle" src="img-big.jpg"/>

and CSS:

..blockstyle{
display: block;
text-align: center;
}

That's why I am unsure about the bug and probably everything works as
expected. I mean - do children of a <div> with style "display:block"
have to inherit this layout behaviour. If yes, then I would open a bug,
if not, I think it's a feature.

Thanks & Regards
Kris


Am 05.10.12 17:06, schrieb Holger Voormann:
> Hi Kris,
>
> The image belongs to the img element which is an inline (and not a
> block) element. It seems, the image support for inline elements is
> incomplete.
>
> Could you please open a bug:
> https://bugs.eclipse.org/bugs/enter_bug.cgi?product=Mylyn%20Docs%20Vex
>
> Thx,
> Holger
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