[Biojava-dev] Help required for the Use of SequencePanel and RectangularBeadRenderer

[Shuvankar Mukherjee]

Hi,

I am trying to use a SequencePanel which has a MultiLineRenderer, which will be using a 
RectangularBeadRenderer to show Genes.

However, it seems that to render a Feature , a Graphics object needs to be passed in the renderBead () method.
I am using the graphics object of SequencePanel , but nothing is getting rendered.
 
Could any one advise what should be the steps the do this...

My code is like the following ( Based on FeatureView class from the 'biojava in anger' docs) 
------------------------------

jPanel1.add(seqPanel, null);

//add Renderers to the MultiLineRenderer

mlr.addRenderer(seqR);

fbr.setFeatureRenderer(rbr);

mlr.addRenderer(fbr);

//set the MultiLineRenderer as the SequencePanels renderer

seqPanel.setRenderer(mlr);

//set the Sequence to Render

seqPanel.setSequence(seq);

//display the whole Sequence

//seqPanel.setRange(new RangeLocation(1,seq.length()));

System.out.println("before grab");

graph = (java.awt.Graphics2D) seqPanel.getGraphics();

System.out.println("after grab");

if(graph != null)

{

System.out.println("grab successful - rendering Bead");

rbr.renderBead(graph,f,seqPanel); 

System.out.println("Rendered Bead");

}

fbr.setFeatureRenderer(rbr);

mlr.addRenderer(fbr);

...

...

...

private FeatureRenderer featr = new BasicFeatureRenderer();

private SequenceRenderer seqR = new SymbolSequenceRenderer();

private SequencePanel seqPanel = new SequencePanel();

//the proxy between featr and seqPanel

private FeatureBlockSequenceRenderer fbr = new FeatureBlockSequenceRenderer();

private RectangularBeadRenderer rbr = new RectangularBeadRenderer();

private java.awt.Graphics2D graph=null;

private Feature f=null;

...



Shuvankar Mukherjee