[4256] | 1 | /*
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| 2 | * BoundedElement.java
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| 3 | *
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| 4 | *
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| 5 | * The Salamander Project - 2D and 3D graphics libraries in Java
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| 6 | * Copyright (C) 2004 Mark McKay
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| 7 | *
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| 8 | * This library is free software; you can redistribute it and/or
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| 9 | * modify it under the terms of the GNU Lesser General Public
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| 10 | * License as published by the Free Software Foundation; either
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| 11 | * version 2.1 of the License, or (at your option) any later version.
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| 12 | *
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| 13 | * This library is distributed in the hope that it will be useful,
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 16 | * Lesser General Public License for more details.
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| 17 | *
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| 18 | * You should have received a copy of the GNU Lesser General Public
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| 19 | * License along with this library; if not, write to the Free Software
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| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 21 | *
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| 22 | * Mark McKay can be contacted at mark@kitfox.com. Salamander and other
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| 23 | * projects can be found at http://www.kitfox.com
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| 24 | *
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| 25 | * Created on January 26, 2004, 9:00 AM
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| 26 | */
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| 27 |
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| 28 | package com.kitfox.svg;
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| 29 |
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| 30 | import com.kitfox.svg.xml.StyleAttribute;
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| 31 | import java.awt.Shape;
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| 32 | import java.awt.geom.AffineTransform;
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| 33 | import java.awt.geom.Rectangle2D;
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| 34 |
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| 35 |
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| 36 | /**
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| 37 | * Maintains bounding box for this element
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| 38 | *
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| 39 | * @author Mark McKay
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| 40 | * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
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| 41 | */
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| 42 | public class TransformableElement extends SVGElement
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| 43 | {
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| 44 |
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| 45 | AffineTransform xform = null;
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| 46 | // AffineTransform invXform = null;
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| 47 |
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| 48 | /** Creates a new instance of BoundedElement */
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| 49 | public TransformableElement() {
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| 50 | }
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| 51 |
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| 52 | public TransformableElement(String id, SVGElement parent)
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| 53 | {
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| 54 | super(id, parent);
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| 55 | }
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[4453] | 56 |
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| 57 | public AffineTransform getXForm()
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| 58 | {
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| 59 | return xform;
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| 60 | }
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[4256] | 61 | /*
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| 62 | public void loaderStartElement(SVGLoaderHelper helper, Attributes attrs, SVGElement parent)
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| 63 | {
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| 64 | //Load style string
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| 65 | super.loaderStartElement(helper, attrs, parent);
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| 66 |
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| 67 | String transform = attrs.getValue("transform");
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| 68 | if (transform != null)
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| 69 | {
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| 70 | xform = parseTransform(transform);
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| 71 | }
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| 72 | }
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| 73 | */
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| 74 |
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| 75 | protected void build() throws SVGException
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| 76 | {
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| 77 | super.build();
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| 78 |
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| 79 | StyleAttribute sty = new StyleAttribute();
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| 80 |
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| 81 | if (getPres(sty.setName("transform")))
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| 82 | {
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| 83 | xform = parseTransform(sty.getStringValue());
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| 84 | }
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| 85 | }
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| 86 |
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| 87 | protected Shape shapeToParent(Shape shape)
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| 88 | {
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| 89 | if (xform == null) return shape;
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| 90 | return xform.createTransformedShape(shape);
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| 91 | }
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| 92 |
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| 93 | protected Rectangle2D boundsToParent(Rectangle2D rect)
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| 94 | {
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| 95 | if (xform == null) return rect;
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| 96 | return xform.createTransformedShape(rect).getBounds2D();
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| 97 | }
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| 98 |
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| 99 | /**
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| 100 | * Updates all attributes in this diagram associated with a time event.
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| 101 | * Ie, all attributes with track information.
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| 102 | * @return - true if this node has changed state as a result of the time
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| 103 | * update
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| 104 | */
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| 105 | public boolean updateTime(double curTime) throws SVGException
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| 106 | {
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| 107 | StyleAttribute sty = new StyleAttribute();
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| 108 |
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| 109 | if (getPres(sty.setName("transform")))
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| 110 | {
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| 111 | AffineTransform newXform = parseTransform(sty.getStringValue());
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| 112 | if (!newXform.equals(xform))
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| 113 | {
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| 114 | xform = newXform;
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| 115 | return true;
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| 116 | }
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| 117 | }
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| 118 |
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| 119 | return false;
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| 120 | }
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| 121 | }
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