diff options
Diffstat (limited to 'src/main/java/com/kitfox/svg/SVGLoader.java')
| -rw-r--r-- | src/main/java/com/kitfox/svg/SVGLoader.java | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/src/main/java/com/kitfox/svg/SVGLoader.java b/src/main/java/com/kitfox/svg/SVGLoader.java new file mode 100644 index 0000000..7f81c18 --- /dev/null +++ b/src/main/java/com/kitfox/svg/SVGLoader.java @@ -0,0 +1,267 @@ +/*
+ * SVGLoader.java
+ *
+ *
+ * The Salamander Project - 2D and 3D graphics libraries in Java
+ * Copyright (C) 2004 Mark McKay
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Mark McKay can be contacted at mark@kitfox.com. Salamander and other
+ * projects can be found at http://www.kitfox.com
+ *
+ * Created on February 18, 2004, 5:09 PM
+ */
+
+package com.kitfox.svg;
+
+
+import java.util.*;
+import java.io.*;
+import java.net.*;
+import org.xml.sax.*;
+import org.xml.sax.helpers.DefaultHandler;
+import javax.xml.parsers.SAXParserFactory;
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.parsers.SAXParser;
+
+import com.kitfox.svg.animation.*;
+
+/**
+ * @author Mark McKay
+ * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
+ */
+public class SVGLoader extends DefaultHandler
+{
+ final HashMap nodeClasses = new HashMap();
+ //final HashMap attribClasses = new HashMap();
+ final LinkedList buildStack = new LinkedList();
+
+ final HashSet ignoreClasses = new HashSet();
+
+ final SVGLoaderHelper helper;
+
+ /**
+ * The diagram that represents the base of this SVG document we're loading.
+ * Will be augmented to include node indexing info and other useful stuff.
+ */
+ final SVGDiagram diagram;
+
+// SVGElement loadRoot;
+
+ //Used to keep track of document elements that are not part of the SVG namespace
+ int skipNonSVGTagDepth = 0;
+ int indent = 0;
+
+ final boolean verbose;
+
+ /** Creates a new instance of SVGLoader */
+ public SVGLoader(URI xmlBase, SVGUniverse universe)
+ {
+ this(xmlBase, universe, false);
+ }
+
+ public SVGLoader(URI xmlBase, SVGUniverse universe, boolean verbose)
+ {
+ this.verbose = verbose;
+
+ diagram = new SVGDiagram(xmlBase, universe);
+
+ //Compile a list of important builder classes
+ nodeClasses.put("animate", Animate.class);
+ nodeClasses.put("animatecolor", AnimateColor.class);
+ nodeClasses.put("animatemotion", AnimateMotion.class);
+ nodeClasses.put("animatetransform", AnimateTransform.class);
+ nodeClasses.put("circle", Circle.class);
+ nodeClasses.put("clippath", ClipPath.class);
+ nodeClasses.put("defs", Defs.class);
+ nodeClasses.put("desc", Desc.class);
+ nodeClasses.put("ellipse", Ellipse.class);
+ nodeClasses.put("filter", Filter.class);
+ nodeClasses.put("font", Font.class);
+ nodeClasses.put("font-face", FontFace.class);
+ nodeClasses.put("g", Group.class);
+ nodeClasses.put("glyph", Glyph.class);
+ nodeClasses.put("image", ImageSVG.class);
+ nodeClasses.put("line", Line.class);
+ nodeClasses.put("lineargradient", LinearGradient.class);
+ nodeClasses.put("metadata", Metadata.class);
+ nodeClasses.put("missing-glyph", MissingGlyph.class);
+ nodeClasses.put("path", Path.class);
+ nodeClasses.put("pattern", PatternSVG.class);
+ nodeClasses.put("polygon", Polygon.class);
+ nodeClasses.put("polyline", Polyline.class);
+ nodeClasses.put("radialgradient", RadialGradient.class);
+ nodeClasses.put("rect", Rect.class);
+ nodeClasses.put("set", SetSmil.class);
+ nodeClasses.put("shape", ShapeElement.class);
+ nodeClasses.put("stop", Stop.class);
+ nodeClasses.put("style", Style.class);
+ nodeClasses.put("svg", SVGRoot.class);
+ nodeClasses.put("symbol", Symbol.class);
+ nodeClasses.put("text", Text.class);
+ nodeClasses.put("title", Title.class);
+ nodeClasses.put("tspan", Tspan.class);
+ nodeClasses.put("use", Use.class);
+
+ ignoreClasses.add("midpointstop");
+
+ //attribClasses.put("clip-path", StyleUrl.class);
+ //attribClasses.put("color", StyleColor.class);
+
+ helper = new SVGLoaderHelper(xmlBase, universe, diagram);
+ }
+
+ private String printIndent(int indent, String indentStrn)
+ {
+ StringBuffer sb = new StringBuffer();
+ for (int i = 0; i < indent; i++)
+ {
+ sb.append(indentStrn);
+ }
+ return sb.toString();
+ }
+
+ public void startDocument() throws SAXException
+ {
+// System.err.println("Start doc");
+
+// buildStack.clear();
+ }
+
+ public void endDocument() throws SAXException
+ {
+// System.err.println("End doc");
+ }
+
+ public void startElement(String namespaceURI, String sName, String qName, Attributes attrs) throws SAXException
+ {
+ if (verbose)
+ {
+ System.err.println(printIndent(indent, " ") + "Starting parse of tag " + sName+ ": " + namespaceURI);
+ }
+ indent++;
+
+ if (skipNonSVGTagDepth != 0 || (!namespaceURI.equals("") && !namespaceURI.equals(SVGElement.SVG_NS)))
+ {
+ skipNonSVGTagDepth++;
+ return;
+ }
+
+ sName = sName.toLowerCase();
+
+//javax.swing.JOptionPane.showMessageDialog(null, sName);
+
+ Object obj = nodeClasses.get(sName);
+ if (obj == null)
+ {
+ if (!ignoreClasses.contains(sName))
+ {
+ System.err.println("SVGLoader: Could not identify tag '" + sName + "'");
+ }
+ return;
+ }
+
+//Debug info tag depth
+//for (int i = 0; i < buildStack.size(); i++) System.err.print(" ");
+//System.err.println("+" + sName);
+
+ try {
+ Class cls = (Class)obj;
+ SVGElement svgEle = (SVGElement)cls.newInstance();
+
+ SVGElement parent = null;
+ if (buildStack.size() != 0) parent = (SVGElement)buildStack.getLast();
+ svgEle.loaderStartElement(helper, attrs, parent);
+
+ buildStack.addLast(svgEle);
+ }
+ catch (Exception e)
+ {
+ e.printStackTrace();
+ throw new SAXException(e);
+ }
+
+ }
+
+ public void endElement(String namespaceURI, String sName, String qName)
+ throws SAXException
+ {
+ indent--;
+ if (verbose)
+ {
+ System.err.println(printIndent(indent, " ") + "Ending parse of tag " + sName+ ": " + namespaceURI);
+ }
+
+ if (skipNonSVGTagDepth != 0)
+ {
+ skipNonSVGTagDepth--;
+ return;
+ }
+
+ sName = sName.toLowerCase();
+
+ Object obj = nodeClasses.get(sName);
+ if (obj == null) return;
+
+//Debug info tag depth
+//for (int i = 0; i < buildStack.size(); i++) System.err.print(" ");
+//System.err.println("-" + sName);
+
+ try {
+ SVGElement svgEle = (SVGElement)buildStack.removeLast();
+
+ svgEle.loaderEndElement(helper);
+
+ SVGElement parent = null;
+ if (buildStack.size() != 0) parent = (SVGElement)buildStack.getLast();
+ //else loadRoot = (SVGElement)svgEle;
+
+ if (parent != null) parent.loaderAddChild(helper, svgEle);
+ else diagram.setRoot((SVGRoot)svgEle);
+
+ }
+ catch (Exception e)
+ {
+e.printStackTrace();
+ throw new SAXException(e);
+ }
+ }
+
+ public void characters(char buf[], int offset, int len)
+ throws SAXException
+ {
+ if (skipNonSVGTagDepth != 0)
+ {
+ return;
+ }
+
+ if (buildStack.size() != 0)
+ {
+ SVGElement parent = (SVGElement)buildStack.getLast();
+ String s = new String(buf, offset, len);
+ parent.loaderAddText(helper, s);
+ }
+ }
+
+ public void processingInstruction(String target, String data)
+ throws SAXException
+ {
+ //Check for external style sheet
+ }
+
+// public SVGElement getLoadRoot() { return loadRoot; }
+ public SVGDiagram getLoadedDiagram() { return diagram; }
+}
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