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From madprog <madp...@htkc.org>
Subject Problem with the SVGOMTextElement.getSubStringLength method
Date Tue, 08 Apr 2008 16:46:14 GMT
Hello,

I am having a problem with the SVGOMTextElement.getSubStringLength  
method.
In the following code, this.selectMask is a SVGOMRectElement and  
this.text a SVGOMTextElement.
It tries to set the width of the <rect> element to the length of the  
text showed in the <text> element.

1: try {
2:     this.selectMask.setAttribute("width",  
Float.toString(this.text.getSubStringLength(start, length)));
3: } catch (NullPointerException npe) {
4:     System.out.println("selection: '" +  
this.text.getTextContent().substring(start, start + length) + "'");
5:     npe.printStackTrace();
6: }

The output is following:

selection: 'Hello, '
java.lang.NullPointerException
         at  
org 
.apache 
.batik 
.bridge 
.SVGTextElementBridge.getSubStringLength(SVGTextElementBridge.java:2723)
         at  
org 
.apache 
.batik 
.bridge 
.SVGTextElementBridge.getSubStringLength(SVGTextElementBridge.java:2385)
         at  
org 
.apache 
.batik 
.dom 
.svg 
.SVGTextContentSupport.getSubStringLength(SVGTextContentSupport.java: 
260)
         at  
org 
.apache 
.batik 
.dom 
.svg 
.SVGOMTextContentElement 
.getSubStringLength(SVGOMTextContentElement.java:195)
         at (attached source code, line 2)
         ...

The exception is raised only when the substring is at the end of the  
text content, and when this content is ended by a space character (' ').

Is this a bug ? If it is not, do I have to trim the substring, and get  
the length of this new string from the <text> element ?
Is not there a way to have this space included in the calculation ?

Paul

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