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Posted to batik-users@xmlgraphics.apache.org by Benjamin Hill <bh...@SIMS.Berkeley.EDU> on 2005/04/13 01:43:55 UTC
Q: Rendering an Applet (Java Container) as SVG
Is there a way to drop in a java awt Container into the rendering engine
and get back a SVG rendering of the applet?
My issue: I have an applet that is written in 1.5.0, and need to render
the applet on a server and present a screen shot of the applet in an
image form (png or gif) to users that can't run 1.5.0. If people have
another method that I could render an applet to an image, I'm all ears
(I'm using buttons, containers, panels, etc, so I can't, that I know of,
just grab a Graphics2D of the applet and render that to a file).
Thanks!
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Re: Q: Rendering an Applet (Java Container) as SVG
Posted by Thomas DeWeese <Th...@Kodak.com>.
Hi Benjamin,
Benjamin Hill wrote:
> I've used the Robot class with much success to take screen shots in
> general, it works great (and would be ok answering questions about it if
> anyone has any). The problem is more along the lines of a server-side
> rendering of an applet or of applet components without a screen,
> in-memory on a server - optimally the process would be to pass an object
> (class: Container) to a method that returns a SVG representation of how
> that Container would have rendered if it were to be used in an applet.
The SVGGraphics2D package (batik.svggen) has a class called
SwingSVGPrettyPrint that can take a JComponent and render it to
an SVGGraphics2D (it does all the children as well).
You will need to turn on java 'headless' mode if you don't have
a screen attached.
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Re: Changing the attributes of an element
Posted by Jorg Heymans <jh...@domek.be>.
myElement.setAttributeNS(null,"fill", "blue") should do the trick.
bader houmad wrote:
> Hi
>
> I want to change the attributes of an element, but not all of them: (ex:
> myElement is a rectangle, "fill:BLACK" "stroke:RED"and "stroke-width:15")
>
> myElement.setAttributeNS(null,"style", "fill:BLUE");
>
> this way myRectangle becomes BLUE but its stroke is set by default to
> black and stroke-width to zero.
>
> is there a method to change only the "fill" for example?
>
> thanks
>
> Bader
>
>
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Re: How to bring one of a SVG element to the foreground
Posted by Thomas DeWeese <Th...@Kodak.com>.
Hi Maik,
Maik Schürer wrote:
> a reapply of getParentElement().appendChild(theElement) works fine to
> bring theElement to top.
> But why is a previous removeChild() unnecessary ?
Because appendChild (and essentially all insert/add DOM methods)
are defined to call 'e.getParentElement().removeChild(e)' - assuming
that 'e' has a parent - before appending.
> Is the parent element so clever to make a "reappend" only ?
I'm not sure what you mean by 'reappend' but it is smart enough
to 'remove' it when needed before adding it. In fact two DOM mutation
events are generated (one for remove, one for append).
> Andreas Neumann schrieb:
>
>> Hi,
>>
>> http://www.carto.net/papers/svg/manipulating_svg_with_dom_ecmascript/
>> is a tutorial with small examples on manipulating the DOM. Amongst
>> others it also discusses reordering of elements.
>>
>> The examples where tested with Batik and Adobe SVG viewer.
>>
>> Andreas
>>
>> Maik Schürer wrote:
>>
>>> Hi there,
>>> I have several overlapped elements on my canvas.
>>> How can I one of these to the foreground (on top of all) ?
>>> Maik
>>>
>>>
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>>>
>>
>>
>
>
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Re: How to bring one of a SVG element to the foreground
Posted by Maik Schürer <Ma...@proveo.de>.
Thanks Thomas and Andreas,
a reapply of getParentElement().appendChild(theElement) works fine to
bring theElement to top.
But why is a previous removeChild() unnecessary ?
Is the parent element so clever to make a "reappend" only ?
Maik
Andreas Neumann schrieb:
> Hi,
>
> http://www.carto.net/papers/svg/manipulating_svg_with_dom_ecmascript/ is
> a tutorial with small examples on manipulating the DOM. Amongst others
> it also discusses reordering of elements.
>
> The examples where tested with Batik and Adobe SVG viewer.
>
> Andreas
>
> Maik Schürer wrote:
>
>> Hi there,
>> I have several overlapped elements on my canvas.
>> How can I one of these to the foreground (on top of all) ?
>> Maik
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: batik-users-unsubscribe@xmlgraphics.apache.org
>> For additional commands, e-mail: batik-users-help@xmlgraphics.apache.org
>>
>
>
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Re: How to bring one of a SVG element to the foreground
Posted by Tonny Kohar <to...@kiyut.com>.
Hi,
> Maik Schürer wrote:
>
> > Hi there,
> > I have several overlapped elements on my canvas.
> > How can I one of these to the foreground (on top of all) ?
> > Maik
This is related to SVG z-order. The SVG z-order is very dependant on the
element on the DOM Tree. Basicly the most bottom element is the most
front, where the most top element is the most back in the z-order.
You could use DOM API to move the element node in the DOM Tree to change
the z-order of the SVG.
Regards
Tonny Kohar
--
Sketsa
SVG Graphics Editor
http://www.kiyut.com
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Re: How to bring one of a SVG element to the foreground
Posted by Andreas Neumann <ne...@karto.baug.ethz.ch>.
Hi,
http://www.carto.net/papers/svg/manipulating_svg_with_dom_ecmascript/ is
a tutorial with small examples on manipulating the DOM. Amongst others
it also discusses reordering of elements.
The examples where tested with Batik and Adobe SVG viewer.
Andreas
Maik Schürer wrote:
> Hi there,
> I have several overlapped elements on my canvas.
> How can I one of these to the foreground (on top of all) ?
> Maik
>
>
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> To unsubscribe, e-mail: batik-users-unsubscribe@xmlgraphics.apache.org
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>
--
----------------------------------------------
Andreas Neumann - Institute of Cartography
Swiss Federal Institute of Technology (ETH)
ETH Hoenggerberg
CH-8093 Zurich, Switzerland
Phone: ++41-1-633 3031, Fax: ++41-1-633 1153
e-mail: neumann@karto.baug.ethz.ch
www: http://www.carto.net/neumann/
SVG.Open: http://www.svgopen.org/
Carto.net: http://www.carto.net/
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Re: How to bring one of a SVG element to the foreground
Posted by Jorg Heymans <jh...@domek.be>.
svg elements are rendered in order, ie if element b comes after element
a in the document then b is drawn on top of a.
Maik Schürer wrote:
> Hi there,
> I have several overlapped elements on my canvas.
> How can I one of these to the foreground (on top of all) ?
> Maik
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Re: How to bring one of a SVG element to the foreground
Posted by Thomas DeWeese <Th...@Kodak.com>.
Hi Maik,
Maik Schürer wrote:
> I have several overlapped elements on my canvas.
> How can I one of these to the foreground (on top of all) ?
Assuming they are all in a common group you can use:
Element toMove = ....
toMove.getParentElement().appendChild(toMove);
This makes 'toMove' the last child of it's parent. This will
make it draw 'on top' of all the other children of the parent.
If you move it out of the group you need to be careful if
fill/stroke properties were set on the group they won't move with
it.
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How to bring one of a SVG element to the foreground
Posted by Maik Schürer <Ma...@proveo.de>.
Hi there,
I have several overlapped elements on my canvas.
How can I one of these to the foreground (on top of all) ?
Maik
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Re: Q: Rendering an Applet (Java Container) as SVG
Posted by Urs Reupke <ur...@gmx.net>.
> The problem is more along the lines of a server-side
> rendering of an applet or of applet components without a screen,
> in-memory on a server - optimally the process would be to pass an object
> (class: Container) to a method that returns a SVG representation of how
> that Container would have rendered if it were to be used in an applet.
You aim for a server-side svg-based emulation of the Java Runtime
Environment?
Bye
-Urs
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Re: Q: Rendering an Applet (Java Container) as SVG
Posted by Benjamin Hill <bh...@SIMS.Berkeley.EDU>.
Tonny Kohar wrote:
>Hi,
>
>
>
>>My issue: I have an applet that is written in 1.5.0, and need to render
>>the applet on a server and present a screen shot of the applet in an
>>image form (png or gif) to users that can't run 1.5.0. If people have
>>another method that I could render an applet to an image, I'm all ears
>>(I'm using buttons, containers, panels, etc, so I can't, that I know of,
>>just grab a Graphics2D of the applet and render that to a file).
>>
>>
>
>I sometimes heard that Java AWT Robot class could take a screenshoot.
>Maybe you could use this method. I am myself not familiar with this
>Robot class.
>
>Regards
>Tonny Kohar
>
>
I've used the Robot class with much success to take screen shots in
general, it works great (and would be ok answering questions about it if
anyone has any). The problem is more along the lines of a server-side
rendering of an applet or of applet components without a screen,
in-memory on a server - optimally the process would be to pass an object
(class: Container) to a method that returns a SVG representation of how
that Container would have rendered if it were to be used in an applet.
Re: Q: Rendering an Applet (Java Container) as SVG
Posted by Urs Reupke <ur...@gmx.net>.
Hi Benjamin, Hi Tonny,
> I sometimes heard that Java AWT Robot class could take a screenshoot.
> Maybe you could use this method. I am myself not familiar with this
> Robot class.
You're right. The Robot class can take screenshots via the
createScreenCapture(Rectangle)
method, where rectangle specifies the on-screen coordinates to be
captured. The return value is a BufferedImage, so you can easily stream
them to a file.
Regards
-Urs
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Re: Q: Rendering an Applet (Java Container) as SVG
Posted by Tonny Kohar <to...@kiyut.com>.
Hi,
> My issue: I have an applet that is written in 1.5.0, and need to render
> the applet on a server and present a screen shot of the applet in an
> image form (png or gif) to users that can't run 1.5.0. If people have
> another method that I could render an applet to an image, I'm all ears
> (I'm using buttons, containers, panels, etc, so I can't, that I know of,
> just grab a Graphics2D of the applet and render that to a file).
I sometimes heard that Java AWT Robot class could take a screenshoot.
Maybe you could use this method. I am myself not familiar with this
Robot class.
Regards
Tonny Kohar
--
Sketsa
SVG Graphics Editor
http://www.kiyut.com
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