Saving JSVGCanvas images

[Piyush Rai <ra...@yahoo.com>]

Hi,
How can one get the image buffer currently being shown on JSVGCanvas? I need to save it as jpg/png OR send it to another application. Is there any method that returns the image buffer??
--Piyush.

		
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Re: NullPointerException while setting attributes

[Thomas DeWeese <Th...@Kodak.com>]

Hi Piyush,

    I think the problem is that the SVG attributes are in
the 'null' namespace not the SVG namespace (this is confusing
because the elements must be in the SVG namespace):

path[i].setAttributeNS(svgNS, "stroke",
     namedNodes.getNamedItemNS(svgNS,"stroke").getNodeValue());

    getNamedItemNS in this case is likely returning null.
    Also as you might guess setting the 'svg:stroke"
attribute is not likely to have any effect on the display.

Piyush Rai wrote:

> Hi,
> 
> I have a NodeList of path elements in an SVG file.
> String svgNS = SVGDOMImplementation.SVG_NAMESPACE_URI;
> NodeList paths = document.getElementsByTagNameNS(svgNS,"path");
> 
> I am also creating an equal number of empty paths(by setting 'd' 
> attribute as "").
> 
> numberOfPaths = paths.getLength();
> path = new Element[numberOfPaths];
> 
> Now I want to set other attributes of these new paths to that of 
> original paths(from the SVG file itself, instead of constant values). I 
> am trying this(for example, the  "stroke" attribute):
> NamedNodeMap namedNodes = paths.item(i).getAttributes();
> //path[i].setAttributeNS(null, "stroke", "#00ffff");   THIS WORKS FINE
> path[i].setAttributeNS(svgNS, 
> "stroke",namedNodes.getNamedItemNS(svgNS,"stroke").getNodeValue());
> And similarly for other attributes.
> 
> But I am getting NullPointerException. All the statements are in the 
> order as written here. What could be the reason! for this? Any thoughts?
> --Piyush.
> 
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NullPointerException while setting attributes

[Piyush Rai <ra...@yahoo.com>]

Hi, 

I have a NodeList of path elements in an SVG file. 
String svgNS = SVGDOMImplementation.SVG_NAMESPACE_URI; 
NodeList paths = document.getElementsByTagNameNS(svgNS,"path"); 

I am also creating an equal number of empty paths(by setting 'd' attribute as ""). 

numberOfPaths = paths.getLength(); 
path = new Element[numberOfPaths]; 

Now I want to set other attributes of these new paths to that of original paths(from the SVG file itself, instead of constant values). I am trying this(for example, the  "stroke" attribute): 
NamedNodeMap namedNodes = paths.item(i).getAttributes(); 
//path[i].setAttributeNS(null, "stroke", "#00ffff");   THIS WORKS FINE 
path[i].setAttributeNS(svgNS, "stroke",namedNodes.getNamedItemNS(svgNS,"stroke").getNodeValue()); 
And similarly for other attributes. 

But I am getting NullPointerException. All the statements are in the order as written here. What could be the reason for this? Any thoughts? 
--Piyush. 


		
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Re: Saving JSVGCanvas images

[Tonny Kohar <to...@kiyut.com>]

Hi,
> How can one get the image buffer currently being shown on JSVGCanvas?
> I need to save it as jpg/png OR send it to another application. Is
> there any method that returns the image buffer??

I think what you want is JSVGCanvas.getOffScreen(); it return
BufferedImage

Regards
Tonny Kohar
-- 
Sketsa 
SVG Graphics Editor
http://www.kiyut.com



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