Examples of java.awt.image.renderable.RenderContext

java.awt.image.renderable.RenderContext
A RenderContext encapsulates the information needed to produce a specific rendering from a RenderableImage. It contains the area to be rendered specified in rendering-independent terms, the resolution at which the rendering is to be performed, and hints used to control the rendering process.
Users create RenderContexts and pass them to the RenderableImage via the createRendering method. Most of the methods of RenderContexts are not meant to be used directly by applications, but by the RenderableImage and operator classes to which it is passed.
The AffineTransform parameter passed into and out of this class are cloned. The RenderingHints and Shape parameters are not necessarily cloneable and are therefore only reference copied. Altering RenderingHints or Shape instances that are in use by instances of RenderContext may have undesired side effects.

     */
    public void setSource(Long id,
                          RenderableOp source,
                          RenderContextProxy renderContextProxy)
        throws RemoteException {
            RenderContext renderContext =
                renderContextProxy.getRenderContext();
            RenderedImage r = source.createRendering(renderContext);
            PlanarImage pi = PlanarImage.wrapRenderedImage(r);
            addSource(id, pi, pi);
    }

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     *
     * @param out The <code>ObjectOutputStream</code>.
     */
    private void writeObject(ObjectOutputStream out) throws IOException {


        RenderContext renderContext = (RenderContext)theObject;


        // Extract the affine transform.
        AffineTransform usr2dev = renderContext.getTransform();


        // Extract the hints.
  RenderingHints hints = renderContext.getRenderingHints();


  // Extract the AOI
        Shape aoi = renderContext.getAreaOfInterest();


        // Write serialized form to the stream.
        out.writeObject(usr2dev);
  out.writeObject(SerializerFactory.getState(aoi));
        out.writeObject(SerializerFactory.getState(hints, null));

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      * @param out The <code>ObjectInputStream</code>.
      */
    private void readObject(ObjectInputStream in)
        throws IOException, ClassNotFoundException {


        RenderContext renderContext = null;


        // Read serialized form from the stream.
        AffineTransform usr2dev = (AffineTransform)in.readObject();
  
  SerializableState aoi = (SerializableState)in.readObject();
  Shape shape = (Shape)aoi.getObject();


  SerializableState rhs = (SerializableState)in.readObject();
        RenderingHints hints = (RenderingHints)rhs.getObject();


        // Restore the transient RenderContext.
  renderContext = new RenderContext(usr2dev, shape, hints);
        theObject = renderContext;
    }

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    public RenderedImage createRendering(Long id,
           SerializableState renderContextState)
  throws RemoteException {


  RenderableImage ri = (RenderableImage)nodes.get(id);
  RenderContext renderContext =
      (RenderContext)renderContextState.getObject();
  RenderedImage rendering = ri.createRendering(renderContext);
  if (rendering instanceof Serializable) {
      return rendering;
  } else {

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  if (crif == null) {
      throw new RuntimeException(
            JaiI18N.getString("JAIRMIImageServer3"));
  }


  RenderContext rc =
      crif.mapRenderContext(id,
          (RenderContext)rcs.getObject(),
          (ParameterBlock)rop.getParameterBlock(),
          rop);
  return SerializerFactory.getState(rc, null);

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          } catch (Exception e) {
        throw new RuntimeException(e.getMessage());
          }
          
          SerializableState ss = (SerializableState)obj;
          RenderContext rc = (RenderContext)ss.getObject();
          
          ri = source.createRendering(rc);


      } else if (str.equals("createScaledRendering")) {

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        double sx = (double)w/dimensions.getWidth();
        double sy = (double)h/dimensions.getHeight();
        AffineTransform usr2dev = new AffineTransform();
        usr2dev.setToScale(sx, sy);


        return createRendering(new RenderContext(usr2dev, hints));
    }

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        return createRendering(new RenderContext(usr2dev, hints));
    }


    public RenderedImage createDefaultRendering() {
        return createRendering(new RenderContext(new AffineTransform()));
    }

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    shape = (Shape)aoi;
      }
  }
  
  if(aoi == null && hints.isEmpty()) {
      renderContext = new RenderContext(usr2dev);
  } else if(aoi == null) {
      renderContext = new RenderContext(usr2dev, hints);
  } else if(hints.isEmpty()) {
      renderContext = new RenderContext(usr2dev, shape);
  } else {
      renderContext = new RenderContext(usr2dev, shape, hints);
  }
    }

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      (ParameterBlock)nodeSupport.getParameterBlock().clone();


  // If there are any hints set on the node, create a new
  // RenderContext which merges them with those in the RenderContext
  // passed in with the passed in hints taking precedence.
  RenderContext rcIn = renderContext;
  RenderingHints nodeHints = nodeSupport.getRenderingHints();
  if(nodeHints != null) {
      RenderingHints hints = renderContext.getRenderingHints();
      RenderingHints mergedHints;
      if (hints == null) {
    mergedHints = nodeHints;
      } else if (nodeHints == null || nodeHints.isEmpty()) {
    mergedHints = hints;
      } else {
    mergedHints = new RenderingHints((Map)nodeHints);
                mergedHints.add(hints);
      }


      if(mergedHints != hints) {
    rcIn = new RenderContext(renderContext.getTransform(),
           renderContext.getAreaOfInterest(),
           mergedHints);
      }
  }


  // Get all sources - whether rendered or renderable.
  Vector sources = nodeSupport.getParameterBlock().getSources();


        try {
            if (sources != null) {
                Vector renderedSources = new Vector();
                for (int i = 0; i < sources.size(); i++) {


        RenderedImage rdrdImage = null;
        Object source = sources.elementAt(i);
        if (source instanceof RenderableImage) {
      RenderContext rcOut =
          remoteCRIF.mapRenderContext(
                 serverName,
                 nodeSupport.getOperationName(),
                 i,
                 renderContext,

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Related Classes of java.awt.image.renderable.RenderContext

com.lightcrafts.media.jai.opimage.AffineCRIF

com.lightcrafts.media.jai.opimage.RotateCRIF

com.lightcrafts.media.jai.opimage.ScaleCRIF

com.lightcrafts.media.jai.opimage.SubsampleAverageCRIF

com.lightcrafts.media.jai.opimage.SubsampleBinaryToGrayCRIF

com.lightcrafts.media.jai.opimage.TranslateCRIF

com.lightcrafts.media.jai.rmi.JAIRMIImageServer

com.lightcrafts.media.jai.rmi.RenderContextProxy

com.lightcrafts.media.jai.rmi.RenderContextState

com.lightcrafts.media.jai.rmi.RMIImageImpl

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