RotatableNodeIndicatorInstaller.java

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package complete.rotatablenodes;

import com.yworks.yfiles.geometry.IOrientedRectangle;
import com.yworks.yfiles.geometry.OrientedRectangle;
import com.yworks.yfiles.graph.INode;
import com.yworks.yfiles.graph.styles.INodeStyle;
import com.yworks.yfiles.view.OrientedRectangleIndicatorInstaller;
import com.yworks.yfiles.view.ResourceKey;

/**
 * A extension of {@link OrientedRectangleIndicatorInstaller} that uses the rotated layout of
 * nodes using a {@link RotatableNodeStyleDecorator}.
 *
 * The indicator will be rotated to fit the rotated bounds of the node.
 */
public class RotatableNodeIndicatorInstaller extends OrientedRectangleIndicatorInstaller {

  RotatableNodeIndicatorInstaller(ResourceKey templateKey) {
    super(null, templateKey);
  }

  @Override
  protected IOrientedRectangle getRectangle(Object item) {
    INode node = (INode) item;
    INodeStyle style = node.getStyle();
    if (style instanceof RotatableNodeStyleDecorator) {
      return ((RotatableNodeStyleDecorator) style).getRotatedLayout(node);
    } else {
      return new OrientedRectangle(node.getLayout());
    }
  }
}