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From "Tilman Hausherr (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BATIK-736) NullPointerException when painting GraphicsNode onto Graphics2D impl with no associated DeviceConfiguration (i.e. SVGGraphics2D)
Date Wed, 20 Jun 2018 17:15:00 GMT

    [ https://issues.apache.org/jira/browse/BATIK-736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16518358#comment-16518358
] 

Tilman Hausherr commented on BATIK-736:
---------------------------------------

{quote}Yes there should be checks in there, I think. I'm not sure what behaviour makes
 sense for a GraphicsConfiguration on SVGGraphics2D, since it doesn't work on a
 raster image. So for now I'll leave getDeviceConfiguration() returning null.
{quote}
In Apache PDFBox, we call {{graphics.getDeviceConfiguration().getDevice().getType();}} to
find out whether a graphics context is a printer and got an NPE. I'll open an issue later,
change our code accordingly, and will link this one to it.

> NullPointerException when painting GraphicsNode onto Graphics2D impl with no associated
DeviceConfiguration (i.e. SVGGraphics2D)
> --------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: BATIK-736
>                 URL: https://issues.apache.org/jira/browse/BATIK-736
>             Project: Batik
>          Issue Type: Bug
>          Components: GVT
>    Affects Versions: 1.7
>         Environment: Operating System: All
> Platform: All
>            Reporter: Thomas Behr
>            Assignee: Batik Developer's Mailing list
>         Attachments: GraphicsUtil.java
>
>
> When painting org.apache.batik.gvt.GraphicsNode uses utility class 
> org.apache.batik.ext.awt.image.GraphicsUtil. This utility fails to check for 
> null return values from Graphics2D.getDeviceConfiguration in at least two 
> places.
> Steps two reproduce:
> Create a GraphicsNode from a SVGDocument, paint onto SVGGraphics2D (or any 
> other Graphics2D impl whose getDeviceConfiguration returns null)
> java.lang.NullPointerException
> 	at 
> org.apache.batik.ext.awt.image.GraphicsUtil.getDestination(GraphicsUtil.java:498)
> 	at 
> org.apache.batik.ext.awt.image.GraphicsUtil.getDestinationColorModel(GraphicsUtil.java:511)
> 	at 
> org.apache.batik.ext.awt.image.GraphicsUtil.getDestinationColorSpace(GraphicsUtil.java:533)
> 	at 
> org.apache.batik.ext.awt.image.GraphicsUtil.drawImage(GraphicsUtil.java:131)
> 	at 
> org.apache.batik.ext.awt.image.GraphicsUtil.drawImage(GraphicsUtil.java:451)
> 	at 
> org.apache.batik.gvt.AbstractGraphicsNode.paint(AbstractGraphicsNode.java:522)
> 	at 
> org.apache.batik.gvt.CompositeGraphicsNode.primitivePaint(CompositeGraphicsNode.java:159)
> 	at 
> org.apache.batik.gvt.AbstractGraphicsNode.paint(AbstractGraphicsNode.java:488)
> 	at 
> org.apache.batik.gvt.CompositeGraphicsNode.primitivePaint(CompositeGraphicsNode.java:159)
> 	at 
> org.apache.batik.gvt.CanvasGraphicsNode.primitivePaint(CanvasGraphicsNode.java:158)
> 	at 
> org.apache.batik.gvt.AbstractGraphicsNode.paint(AbstractGraphicsNode.java:488)
> 	at 
> org.apache.batik.gvt.CompositeGraphicsNode.primitivePaint(CompositeGraphicsNode.java:159)
> 	at 
> org.apache.batik.gvt.AbstractGraphicsNode.paint(AbstractGraphicsNode.java:488)



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