Right, good to know, was just providing the objects, assumed 
implementation of render to be irrelevant, but I guess not entirely. 
Anyway, I'm also interested in the second part of your question, what does 
resource.setCacheable(false) effect, I've had trouble tracking this down 
in the resource classes...



From:   Carl-Eric Menzel <[email protected]>
To:     [email protected]
Date:   11/18/2010 08:26 AM
Subject:        Re: Non-caching RenderedDynamicImageResource



On Thu, 18 Nov 2010 08:13:57 -0500
[email protected] wrote:

> Haven't tested this, but it could be a start...
> 
>                 final RenderedDynamicImageResource rd = new 
> RenderedDynamicImageResource(100, 100) {
> 
>                         @Override
>                         protected boolean render(Graphics2D graphics)
> { return false;
>                         }

That was my idea before I came up with my NonCaching...Resource.
However, the return value of render(Graphics2D) is used to indicate the
requirement to immediately re-render due to a change in image
dimensions. Simply returning false would throw render() into an infinite
loop:

[RenderedDynamicImageResource]
protected byte[] render()
{
 while (true)
  {
   final BufferedImage image = new
     BufferedImage(getWidth(), getHeight(), getType());
   if (render((Graphics2D)image.getGraphics())) {
     return toImageData(image);
   }
  }
}

Carl-Eric
www.wicketbuch.de

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