/*******************************************************************************
* 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
******************************************************************************/
/*
* @(#)SVGRect.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.samples.svg.*;
import org.jhotdraw.geom.*;
/**
* SVGRect.
*
* @author Werner Randelshofer
* @version 2.1 2009-04-17 Method contains() takes now into account
* whether the figure is filled.
* <br>2.0 2007-04-14 Adapted for new AttributeKeys.TRANSFORM support.
* <br>1.0 July 8, 2006 Created.
*/
public class SVGRectFigure extends SVGAttributedFigure implements SVGFigure {
/** The variable acv is used for generating the locations of the control
* points for the rounded rectangle using path.curveTo. */
private static final double acv;
static {
double angle = Math.PI / 4.0;
double a = 1.0 - Math.cos(angle);
double b = Math.tan(angle);
double c = Math.sqrt(1.0 + b * b) - 1 + a;
double cv = 4.0 / 3.0 * a * b / c;
acv = (1.0 - cv);
}
/**
*/
private RoundRectangle2D.Double roundrect;
/**
* This is used to perform faster drawing.
*/
private transient Shape cachedTransformedShape;
/**
* This is used to perform faster hit testing.
*/
private transient Shape cachedHitShape;
/** Creates a new instance. */
public SVGRectFigure() {
this(0, 0, 0, 0);
}
public SVGRectFigure(double x, double y, double width, double height) {
this(x, y, width, height, 0, 0);
}
public SVGRectFigure(double x, double y, double width, double height, double rx, double ry) {
roundrect = new RoundRectangle2D.Double(x, y, width, height, rx, ry);
SVGAttributeKeys.setDefaults(this);
}
// DRAWING
protected void drawFill(Graphics2D g) {
if (getArcHeight() == 0d && getArcWidth() == 0d) {
g.fill(roundrect.getBounds2D());
} else {
g.fill(roundrect);
}
}
protected void drawStroke(Graphics2D g) {
if (roundrect.archeight == 0 && roundrect.arcwidth == 0) {
g.draw(roundrect.getBounds2D());
} else {
// We have to generate the path for the round rectangle manually,
// because the path of a Java RoundRectangle is drawn counter clockwise
// whereas an SVG rect needs to be drawn clockwise.
GeneralPath p = new GeneralPath();
double aw = roundrect.arcwidth / 2d;
double ah = roundrect.archeight / 2d;
p.moveTo((float) (roundrect.x + aw), (float) roundrect.y);
p.lineTo((float) (roundrect.x + roundrect.width - aw), (float) roundrect.y);
p.curveTo((float) (roundrect.x + roundrect.width - aw * acv), (float) roundrect.y, //
(float) (roundrect.x + roundrect.width), (float)(roundrect.y + ah * acv), //
(float) (roundrect.x + roundrect.width), (float) (roundrect.y + ah));
p.lineTo((float) (roundrect.x + roundrect.width), (float) (roundrect.y + roundrect.height - ah));
p.curveTo(
(float) (roundrect.x + roundrect.width), (float) (roundrect.y + roundrect.height - ah * acv),//
(float) (roundrect.x + roundrect.width - aw * acv), (float) (roundrect.y + roundrect.height),//
(float) (roundrect.x + roundrect.width - aw), (float) (roundrect.y + roundrect.height));
p.lineTo((float) (roundrect.x + aw), (float) (roundrect.y + roundrect.height));
p.curveTo((float) (roundrect.x + aw*acv), (float) (roundrect.y + roundrect.height),//
(float) (roundrect.x), (float) (roundrect.y + roundrect.height - ah*acv),//
(float) roundrect.x, (float) (roundrect.y + roundrect.height - ah));
p.lineTo((float) roundrect.x, (float) (roundrect.y + ah));
p.curveTo((float) (roundrect.x), (float) (roundrect.y + ah*acv),//
(float) (roundrect.x + aw*acv), (float)(roundrect.y),//
(float)(roundrect.x + aw), (float)(roundrect.y));
p.closePath();
g.draw(p);
}
}
// SHAPE AND BOUNDS
public double getX() {
return roundrect.x;
}
public double getY() {
return roundrect.y;
}
public double getWidth() {
return roundrect.width;
}
public double getHeight() {
return roundrect.height;
}
public double getArcWidth() {
return roundrect.arcwidth / 2d;
}
public double getArcHeight() {
return roundrect.archeight / 2d;
}
public Rectangle2D.Double getBounds() {
return (Rectangle2D.Double) roundrect.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 + 1d;
Geom.grow(r, g, g);
} else {
double strokeTotalWidth = AttributeKeys.getStrokeTotalWidth(this);
double width = strokeTotalWidth / 2d;
if (STROKE_JOIN.get(this) == BasicStroke.JOIN_MITER) {
width *= STROKE_MITER_LIMIT.get(this);
}
if (STROKE_CAP.get(this) != BasicStroke.CAP_BUTT) {
width += strokeTotalWidth * 2;
}
width++;
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);
}
@Override
public void setBounds(Point2D.Double anchor, Point2D.Double lead) {
invalidateTransformedShape();
roundrect.x = Math.min(anchor.x, lead.x);
roundrect.y = Math.min(anchor.y, lead.y);
roundrect.width = Math.max(0.1, Math.abs(lead.x - anchor.x));
roundrect.height = Math.max(0.1, Math.abs(lead.y - anchor.y));
invalidate();
}
private void invalidateTransformedShape() {
cachedTransformedShape = null;
cachedHitShape = null;
}
private Shape getTransformedShape() {
if (cachedTransformedShape == null) {
if (getArcHeight() == 0 || getArcWidth() == 0) {
cachedTransformedShape = roundrect.getBounds2D();
} else {
cachedTransformedShape = (Shape) roundrect.clone();
}
if (TRANSFORM.get(this) != null) {
cachedTransformedShape = TRANSFORM.get(this).createTransformedShape(cachedTransformedShape);
}
}
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;
}
/**
* Transforms the figure.
* @param tx The transformation.
*/
public void transform(AffineTransform tx) {
invalidateTransformedShape();
if (TRANSFORM.get(this) != null ||
// (tx.getType() & (AffineTransform.TYPE_TRANSLATION | AffineTransform.TYPE_MASK_SCALE)) != tx.getType()) {
(tx.getType() & (AffineTransform.TYPE_TRANSLATION)) != tx.getType()) {
if (TRANSFORM.get(this) == null) {
TRANSFORM.basicSet(this, (AffineTransform) tx.clone());
} 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);
}
}
}
// ATTRIBUTES
public void setArc(double w, double h) {
roundrect.arcwidth = Math.max(0d, Math.min(roundrect.width, w * 2d));
roundrect.archeight = Math.max(0d, Math.min(roundrect.height, h * 2d));
}
public void setArc(Dimension2DDouble arc) {
roundrect.arcwidth = Math.max(0d, Math.min(roundrect.width, arc.width * 2d));
roundrect.archeight = Math.max(0d, Math.min(roundrect.height, arc.height * 2d));
}
public Dimension2DDouble getArc() {
return new Dimension2DDouble(
roundrect.arcwidth / 2d,
roundrect.archeight / 2d);
}
public void restoreTransformTo(Object geometry) {
invalidateTransformedShape();
Object[] restoreData = (Object[]) geometry;
roundrect = (RoundRectangle2D.Double) ((RoundRectangle2D.Double) restoreData[0]).clone();
TRANSFORM.basicSetClone(this, (AffineTransform) restoreData[1]);
FILL_GRADIENT.basicSetClone(this, (Gradient) restoreData[2]);
STROKE_GRADIENT.basicSetClone(this, (Gradient) restoreData[3]);
}
public Object getTransformRestoreData() {
return new Object[]{
roundrect.clone(),
TRANSFORM.getClone(this),
FILL_GRADIENT.getClone(this),
STROKE_GRADIENT.getClone(this),};
}
// 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 SVGRectRadiusHandle(this));
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 SVGRectFigure clone() {
SVGRectFigure that = (SVGRectFigure) super.clone();
that.roundrect = (RoundRectangle2D.Double) this.roundrect.clone();
that.cachedTransformedShape = null;
that.cachedHitShape = null;
return that;
}
public boolean isEmpty() {
Rectangle2D.Double b = getBounds();
return b.width <= 0 || b.height <= 0;
}
@Override
public void invalidate() {
super.invalidate();
invalidateTransformedShape();
}
}