/**
* @param hints
* @return
*/
private RenderingHints prepareHints(RenderingHints hints) {
if (hints == null) {
hints = new Hints();
} else {
hints = (RenderingHints) hints.clone();
}
hints.remove(JAI.KEY_IMAGE_LAYOUT); // remove an eventual layout passed down to us
return hints;
}
/**
* Sets table of rendering hints.
*
* @param hints table to be set
*/
@SuppressWarnings("rawtypes")
public void setRenderingHints(Map hints) {
this.hints.clear();
if (hints instanceof RenderingHints) {
RenderingHints renderingHints = (RenderingHints) hints;
this.hints.putAll((Map) renderingHints.clone());
} else {
this.hints.putAll(hints);
}
}
// Since this operation deals with packed bits in a binary image, we
// do not need to expand the IndexColorModel
private static Map configHelper(Map configuration) {
Map config;
if (configuration == null) {
config = new RenderingHints(JAI.KEY_REPLACE_INDEX_COLOR_MODEL, Boolean.FALSE);
} else {
config = configuration;
if (!config.containsKey(JAI.KEY_REPLACE_INDEX_COLOR_MODEL)) {
RenderingHints hints = (RenderingHints) configuration;
config = (RenderingHints) hints.clone();
config.put(JAI.KEY_REPLACE_INDEX_COLOR_MODEL, Boolean.FALSE);
}
}
return config;
}
/**
* Constructs a RenderableOp given the name of the operation to be performed and a ParameterBlock
* containing RenderableImage sources and other parameters. Any RenderedImage sources referenced
* by the ParameterBlock will be ignored.
*
* <p>The <code>ParameterBlock</code> may include <code>DeferredData</code> parameters. These will
* not be evaluated until their values are actually required, i.e., when a rendering of the node
* is requested or the renderable dimensions are queried.
*
* @param registry The <code>OperationRegistry</code> to be used for instantiation. if <code>null
* </code>, the default registry is used. Saved by reference.
* @param opName The operation name. Saved by reference.
* @param pb The sources and other parameters. If <code>null</code>, it is assumed that this node
* has no sources and parameters. This parameter is cloned.
* @param hints The common node <code>RenderingHints</code> to be set; it may be <code>null</code>
* . This parameter is cloned.
* @throws IllegalArgumentException if <code>opName</code> is <code>null</code>.
* @since JAI 1.1
*/
public RenderableOp(
OperationRegistry registry, String opName, ParameterBlock pb, RenderingHints hints) {
if (pb == null) {
// Ensure that the PB is non-null.
pb = new ParameterBlock();
} else {
// Clone the PB.
pb = (ParameterBlock) pb.clone();
}
// Clone the hints if non-null.
if (hints != null) {
hints = (RenderingHints) hints.clone();
}
// Initialize the various helper objects.
eventManager = new PropertyChangeSupportJAI(this);
properties = new WritablePropertySourceImpl(null, null, eventManager);
nodeSupport =
new OperationNodeSupport(getRegistryModeName(), opName, registry, pb, hints, eventManager);
}
/**
* Gets a copy of the rendering hints.
*
* @return clone of table of rendering hints.
*/
public RenderingHints getRenderingHints() {
return (RenderingHints) hints.clone();
}
/**
* Sets the common <code>RenderingHints</code> of this node. The supplied parameter is cloned if
* non-<code>null</code>.
*
* <p>If the supplied <code>RenderingHints</code> does not equal the current <code>RenderingHints
* </code>, a <code>PropertyChangeEventJAI</code> named "RenderingHints" will be fired.
*
* @param hints The new <code>RenderingHints</code> to be set; it may be <code>null</code>.
* @since JAI 1.1
*/
public synchronized void setRenderingHints(RenderingHints hints) {
if (hints != null) {
hints = (RenderingHints) hints.clone();
}
nodeSupport.setRenderingHints(hints);
}
/**
* Returns a clone of the common <code>RenderingHints</code> of this node or <code>null</code>.
*
* @since JAI 1.1
*/
public RenderingHints getRenderingHints() {
RenderingHints hints = nodeSupport.getRenderingHints();
return hints == null ? null : (RenderingHints) hints.clone();
}