FinalStateThingPeer.java

package org.archstudio.archipelago2.ext.statecharts.things;

import java.awt.Shape;
import java.awt.geom.Ellipse2D;

import org.archstudio.bna.IBNAView;
import org.archstudio.bna.ICoordinate;
import org.archstudio.bna.ICoordinateMapper;
import org.archstudio.bna.facets.peers.IHasShadowPeer;
import org.archstudio.bna.things.AbstractThingPeer;
import org.archstudio.bna.ui.IUIResources;
import org.archstudio.bna.utils.BNAUtils;
import org.archstudio.sysutils.SystemUtils;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;

public class FinalStateThingPeer<T extends FinalStateThing> extends AbstractThingPeer<T>
    implements IHasShadowPeer<T> {

  public FinalStateThingPeer(T thing, IBNAView view, ICoordinateMapper cm) {
    super(thing, view, cm);
  }

  @Override
  public boolean draw(Rectangle localBounds, IUIResources r) {
    Rectangle lbb = cm.worldToLocal(t.getBoundingBox());
    if (!localBounds.intersects(lbb)) {
      return false;
    }

    Shape outerShape = new Ellipse2D.Double(lbb.x, lbb.y, lbb.width, lbb.height);
    float delta = SystemUtils.bound(5, 6 * (float) cm.getLocalScale(), Float.MAX_VALUE);
    Shape innerShape = new Ellipse2D.Double(lbb.x + delta, lbb.y + delta, lbb.width - 2 * delta + 1,
        lbb.height - 2 * delta + 1);

    r.fillShape(outerShape, new RGB(255, 255, 255), null, 1);
    r.fillShape(innerShape, t.getColor(), t.isGradientFilled() ? t.getSecondaryColor() : null, 1);
    r.drawShape(outerShape, t.getEdgeColor(), t.getLineWidth(), t.getLineStyle(), 1);
    if (t.isSelected()) {
      r.selectShape(outerShape, t.getRotatingOffset());
    }

    return true;
  }

  @Override
  public boolean drawShadow(Rectangle localBounds, IUIResources r) {
    if (t.getGlowColor() == null) {
      Rectangle lbb = cm.worldToLocal(t.getBoundingBox());
      if (!localBounds.intersects(lbb)) {
        return false;
      }

      Shape outerShape = new Ellipse2D.Double(lbb.x, lbb.y, lbb.width, lbb.height);
      r.fillShape(outerShape, null, null, 1);
      return true;
    }
    return false;
  }

  @Override
  public boolean isInThing(ICoordinate location) {
    Rectangle r = t.getBoundingBox();
    return new Ellipse2D.Double(r.x, r.y, r.width, r.height)
        .contains(BNAUtils.toPoint2D(location.getWorldPoint()));
  }

}