/*******************************************************************************
* Copyright (c) 2006-2012
* Software Technology Group, Dresden University of Technology
* DevBoost GmbH, Berlin, Amtsgericht Charlottenburg, HRB 140026
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Software Technology Group - TU Dresden, Germany;
* DevBoost GmbH - Berlin, Germany
* - initial API and implementation
******************************************************************************/
/*
* @(#)SVGEllipse.java 2.1 2009-04-17
*
* Copyright (c) 1996-2009 by the original authors of JHotDraw
* and all its contributors.
* All rights reserved.
*
* The copyright of this software is owned by the authors and
* contributors of the JHotDraw project ("the copyright holders").
* You may not use, copy or modify this software, except in
* accordance with the license agreement you entered into with
* the copyright holders. For details see accompanying license terms.
*/
package org.jhotdraw.samples.svg.figures;
import java.awt.*;
import java.awt.geom.*;
import java.util.*;
import org.jhotdraw.draw.*;
import static org.jhotdraw.samples.svg.SVGAttributeKeys.*;
import org.jhotdraw.geom.*;
import org.jhotdraw.samples.svg.*;
/**
* SVGEllipse represents a SVG ellipse and a SVG circle element.
*
* @author Werner Randelshofer
* @version 2.1 2009-04-17 Method contains() takes now into account
* whether the figure is filled.
* <br>2.0.3 Don't draw ellipse if widht or height is 0.
* <br>2.0.2 2008-03-20 Fixed contains() method.
* <br>2.0 2007-04-14 Adapted for new AttributeKeys.TRANSFORM support.
* <br>1.0 July 8, 2006 Created.
*/
public class SVGEllipseFigure extends SVGAttributedFigure implements SVGFigure {
private Ellipse2D.Double ellipse;
/**
* This is used to perform faster drawing and hit testing.
*/
private transient Shape cachedTransformedShape;
/**
* This is used to perform faster hit testing.
*/
private transient Shape cachedHitShape;
/** Creates a new instance. */
public SVGEllipseFigure() {
this(0, 0, 0, 0);
}
public SVGEllipseFigure(double x, double y, double width, double height) {
ellipse = new Ellipse2D.Double(x, y, width, height);
SVGAttributeKeys.setDefaults(this);
}
// DRAWING
protected void drawFill(Graphics2D g) {
if (ellipse.width > 0 && ellipse.height > 0) {
g.fill(ellipse);
}
}
protected void drawStroke(Graphics2D g) {
if (ellipse.width > 0 && ellipse.height > 0) {
g.draw(ellipse);
}
}
// SHAPE AND BOUNDS
public double getX() {
return ellipse.x;
}
public double getY() {
return ellipse.y;
}
public double getWidth() {
return ellipse.getWidth();
}
public double getHeight() {
return ellipse.getHeight();
}
public Rectangle2D.Double getBounds() {
return (Rectangle2D.Double) ellipse.getBounds2D();
}
@Override
public Rectangle2D.Double getDrawingArea() {
Rectangle2D rx = getTransformedShape().getBounds2D();
Rectangle2D.Double r = (rx instanceof Rectangle2D.Double) ? (Rectangle2D.Double) rx : new Rectangle2D.Double(rx.getX(), rx.getY(), rx.getWidth(), rx.getHeight());
if (TRANSFORM.get(this) == null) {
double g = SVGAttributeKeys.getPerpendicularHitGrowth(this) * 2d + 1;
Geom.grow(r, g, g);
} else {
double strokeTotalWidth = AttributeKeys.getStrokeTotalWidth(this);
double width = strokeTotalWidth / 2d;
width *= Math.max(TRANSFORM.get(this).getScaleX(), TRANSFORM.get(this).getScaleY()) + 1;
Geom.grow(r, width, width);
}
return r;
}
/**
* Checks if a Point2D.Double is inside the figure.
*/
public boolean contains(Point2D.Double p) {
return getHitShape().contains(p);
}
private Shape getTransformedShape() {
if (cachedTransformedShape == null) {
if (TRANSFORM.get(this) == null) {
cachedTransformedShape = ellipse;
} else {
cachedTransformedShape = TRANSFORM.get(this).createTransformedShape(ellipse);
}
}
return cachedTransformedShape;
}
private Shape getHitShape() {
if (cachedHitShape == null) {
if (FILL_COLOR.get(this) != null || FILL_GRADIENT.get(this) != null) {
cachedHitShape = new GrowStroke(
(float) SVGAttributeKeys.getStrokeTotalWidth(this) / 2f,
(float) SVGAttributeKeys.getStrokeTotalMiterLimit(this)).createStrokedShape(getTransformedShape());
} else {
cachedHitShape = SVGAttributeKeys.getHitStroke(this).createStrokedShape(getTransformedShape());
}
}
return cachedHitShape;
}
@Override
public void setBounds(Point2D.Double anchor, Point2D.Double lead) {
ellipse.x = Math.min(anchor.x, lead.x);
ellipse.y = Math.min(anchor.y, lead.y);
ellipse.width = Math.max(0.1, Math.abs(lead.x - anchor.x));
ellipse.height = Math.max(0.1, Math.abs(lead.y - anchor.y));
invalidate();
}
/**
* Transforms the figure.
*
* @param tx the transformation.
*/
public void transform(AffineTransform tx) {
if (TRANSFORM.get(this) != null ||
(tx.getType() & (AffineTransform.TYPE_TRANSLATION)) != tx.getType()) {
if (TRANSFORM.get(this) == null) {
TRANSFORM.basicSetClone(this, tx);
} else {
AffineTransform t = TRANSFORM.getClone(this);
t.preConcatenate(tx);
TRANSFORM.basicSet(this, t);
}
} else {
Point2D.Double anchor = getStartPoint();
Point2D.Double lead = getEndPoint();
setBounds(
(Point2D.Double) tx.transform(anchor, anchor),
(Point2D.Double) tx.transform(lead, lead));
if (FILL_GRADIENT.get(this) != null &&
!FILL_GRADIENT.get(this).isRelativeToFigureBounds()) {
Gradient g = FILL_GRADIENT.getClone(this);
g.transform(tx);
FILL_GRADIENT.basicSet(this, g);
}
if (STROKE_GRADIENT.get(this) != null &&
!STROKE_GRADIENT.get(this).isRelativeToFigureBounds()) {
Gradient g = STROKE_GRADIENT.getClone(this);
g.transform(tx);
STROKE_GRADIENT.basicSet(this, g);
}
}
invalidate();
}
public void restoreTransformTo(Object geometry) {
Object[] restoreData = (Object[]) geometry;
ellipse = (Ellipse2D.Double) ((Ellipse2D.Double) restoreData[0]).clone();
TRANSFORM.basicSetClone(this, (AffineTransform) restoreData[1]);
FILL_GRADIENT.basicSetClone(this, (Gradient) restoreData[2]);
STROKE_GRADIENT.basicSetClone(this, (Gradient) restoreData[3]);
invalidate();
}
public Object getTransformRestoreData() {
return new Object[]{
ellipse.clone(),
TRANSFORM.getClone(this),
FILL_GRADIENT.getClone(this),
STROKE_GRADIENT.getClone(this),};
}
// ATTRIBUTES
// EDITING
@Override
public Collection<Handle> createHandles(int detailLevel) {
LinkedList<Handle> handles = new LinkedList<Handle>();
switch (detailLevel % 2) {
case -1: // Mouse hover handles
handles.add(new BoundsOutlineHandle(this, false, true));
break;
case 0:
ResizeHandleKit.addResizeHandles(this, handles);
handles.add(new LinkHandle(this));
break;
case 1:
TransformHandleKit.addTransformHandles(this, handles);
break;
default:
break;
}
return handles;
}
// CONNECTING
public boolean canConnect() {
return false; // SVG does not support connecting
}
public Connector findConnector(Point2D.Double p, ConnectionFigure prototype) {
return null; // SVG does not support connectors
}
public Connector findCompatibleConnector(Connector c, boolean isStartConnector) {
return null; // SVG does not support connectors
}
// COMPOSITE FIGURES
// CLONING
public SVGEllipseFigure clone() {
SVGEllipseFigure that = (SVGEllipseFigure) super.clone();
that.ellipse = (Ellipse2D.Double) this.ellipse.clone();
that.cachedTransformedShape = null;
return that;
}
// EVENT HANDLING
public boolean isEmpty() {
Rectangle2D.Double b = getBounds();
return b.width <= 0 || b.height <= 0;
}
@Override
public void invalidate() {
super.invalidate();
cachedTransformedShape = null;
cachedHitShape = null;
}
}