Java tutorial
/* * Copyright (c) 2010, 2016, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javafx.scene.shape; import com.sun.javafx.util.Logging; import com.sun.javafx.geom.Path2D; import com.sun.javafx.scene.DirtyBits; import com.sun.javafx.scene.NodeHelper; import com.sun.javafx.scene.shape.SVGPathHelper; import com.sun.javafx.scene.shape.ShapeHelper; import com.sun.javafx.sg.prism.NGNode; import com.sun.javafx.sg.prism.NGSVGPath; import com.sun.javafx.tk.Toolkit; import javafx.beans.property.ObjectProperty; import javafx.beans.property.ObjectPropertyBase; import javafx.beans.property.StringProperty; import javafx.beans.property.StringPropertyBase; import javafx.scene.Node; import javafx.scene.paint.Paint; /** * The {@code SVGPath} class represents a simple shape that is constructed by * parsing SVG path data from a String. * <PRE> import javafx.scene.shape.*; SVGPath svg = new SVGPath(); svg.setContent("M40,60 C42,48 44,30 25,32"); </PRE> * @since JavaFX 2.0 */ public class SVGPath extends Shape { static { SVGPathHelper.setSVGPathAccessor(new SVGPathHelper.SVGPathAccessor() { @Override public NGNode doCreatePeer(Node node) { return ((SVGPath) node).doCreatePeer(); } @Override public void doUpdatePeer(Node node) { ((SVGPath) node).doUpdatePeer(); } @Override public com.sun.javafx.geom.Shape doConfigShape(Shape shape) { return ((SVGPath) shape).doConfigShape(); } }); } /** * Defines the filling rule constant for determining the interior of the path. * The value must be one of the following constants: * {@code FillRile.EVEN_ODD} or {@code FillRule.NON_ZERO}. * The default value is {@code FillRule.NON_ZERO}. * * @defaultValue FillRule.NON_ZERO */ private ObjectProperty<FillRule> fillRule; private Path2D path2d; { // To initialize the class helper at the begining each constructor of this class SVGPathHelper.initHelper(this); } /** * Creates an empty instance of SVGPath. */ public SVGPath() { } public final void setFillRule(FillRule value) { if (fillRule != null || value != FillRule.NON_ZERO) { fillRuleProperty().set(value); } } public final FillRule getFillRule() { return fillRule == null ? FillRule.NON_ZERO : fillRule.get(); } public final ObjectProperty<FillRule> fillRuleProperty() { if (fillRule == null) { fillRule = new ObjectPropertyBase<FillRule>(FillRule.NON_ZERO) { @Override public void invalidated() { NodeHelper.markDirty(SVGPath.this, DirtyBits.SHAPE_FILLRULE); NodeHelper.geomChanged(SVGPath.this); } @Override public Object getBean() { return SVGPath.this; } @Override public String getName() { return "fillRule"; } }; } return fillRule; } /** * Defines the SVG Path encoded string as specified at: * <a href="http://www.w3.org/TR/SVG/paths.html">http://www.w3.org/TR/SVG/paths.html</a>. * * @defaultValue empty string */ private StringProperty content; public final void setContent(String value) { contentProperty().set(value); } public final String getContent() { return content == null ? "" : content.get(); } public final StringProperty contentProperty() { if (content == null) { content = new StringPropertyBase("") { @Override public void invalidated() { NodeHelper.markDirty(SVGPath.this, DirtyBits.NODE_CONTENTS); NodeHelper.geomChanged(SVGPath.this); path2d = null; } @Override public Object getBean() { return SVGPath.this; } @Override public String getName() { return "content"; } }; } return content; } private Object svgPathObject; /* * Note: This method MUST only be called via its accessor method. */ private NGNode doCreatePeer() { return new NGSVGPath(); } /* * Note: This method MUST only be called via its accessor method. */ private Path2D doConfigShape() { if (path2d == null) { path2d = createSVGPath2D(); } else { path2d.setWindingRule(getFillRule() == FillRule.NON_ZERO ? Path2D.WIND_NON_ZERO : Path2D.WIND_EVEN_ODD); } return path2d; } /* * Note: This method MUST only be called via its accessor method. */ private void doUpdatePeer() { if (NodeHelper.isDirty(this, DirtyBits.SHAPE_FILLRULE) || NodeHelper.isDirty(this, DirtyBits.NODE_CONTENTS)) { final NGSVGPath peer = NodeHelper.getPeer(this); if (peer.acceptsPath2dOnUpdate()) { if (svgPathObject == null) { svgPathObject = new Path2D(); } Path2D tempPathObject = (Path2D) svgPathObject; tempPathObject.setTo((Path2D) ShapeHelper.configShape(this)); } else { svgPathObject = createSVGPathObject(); } peer.setContent(svgPathObject); } } /** * Returns a string representation of this {@code SVGPath} object. * @return a string representation of this {@code SVGPath} object. */ @Override public String toString() { final StringBuilder sb = new StringBuilder("SVGPath["); String id = getId(); if (id != null) { sb.append("id=").append(id).append(", "); } sb.append("content=\"").append(getContent()).append("\""); sb.append(", fill=").append(getFill()); sb.append(", fillRule=").append(getFillRule()); Paint stroke = getStroke(); if (stroke != null) { sb.append(", stroke=").append(stroke); sb.append(", strokeWidth=").append(getStrokeWidth()); } return sb.append("]").toString(); } private Path2D createSVGPath2D() { try { return Toolkit.getToolkit().createSVGPath2D(this); } catch (final RuntimeException e) { Logging.getJavaFXLogger().warning("Failed to configure svg path \"{0}\": {1}", getContent(), e.getMessage()); return Toolkit.getToolkit().createSVGPath2D(new SVGPath()); } } private Object createSVGPathObject() { try { return Toolkit.getToolkit().createSVGPathObject(this); } catch (final RuntimeException e) { Logging.getJavaFXLogger().warning("Failed to configure svg path \"{0}\": {1}", getContent(), e.getMessage()); return Toolkit.getToolkit().createSVGPathObject(new SVGPath()); } } }