Move over from contrib/mathml

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@195908 13f79535-47bb-0310-9956-ffa450edef68

3 files changed, 237 insertions, 0 deletions

diff --git a/examples/mathml/src/org/apache/fop/mathml/MathMLElement.java b/examples/mathml/src/org/apache/fop/mathml/MathMLElement.java
new file mode 100644
index 000000000..066b7b54c
--- /dev/null
+++ b/examples/mathml/src/org/apache/fop/mathml/MathMLElement.java
@@ -0,0 +1,124 @@
+/* $Id$
+ * Copyright (C) 2001 The Apache Software Foundation. All rights reserved.
+ * For details on use and redistribution please refer to the
+ * LICENSE file included with these sources.
+ */
+
+package org.apache.fop.mathml;
+
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.geom.Point2D;
+
+import org.apache.fop.fo.FONode;
+import org.apache.fop.apps.FOPException;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.*;
+import org.xml.sax.Attributes;
+
+import org.apache.batik.svggen.SVGGraphics2D;
+import org.apache.batik.dom.svg.SVGDOMImplementation;
+
+import net.sourceforge.jeuclid.MathBase;
+import net.sourceforge.jeuclid.DOMMathBuilder;
+
+public class MathMLElement extends MathMLObj {
+    Document svgDoc = null;
+    float width;
+    float height;
+    boolean converted = false;
+
+    public MathMLElement(FONode parent) {
+        super(parent);
+    }
+
+    public void handleAttrs(Attributes attlist) throws FOPException {
+        super.handleAttrs(attlist);
+        createBasicDocument();
+    }
+
+    public void convertToSVG() {
+        try {
+            if (!converted) {
+                converted = true;
+                String fontname = "Helvetica";
+                int fontstyle = 0;
+                int inlinefontstyle = 0;
+                int displayfontsize = 12;
+                int inlinefontsize = 12;
+
+                MathBase base = new MathBase(
+                                  (new DOMMathBuilder(doc)).getMathRootElement(),
+                                  fontname, fontstyle, inlinefontsize,
+                                  displayfontsize);
+
+                base.setDebug(false);
+
+                svgDoc = createSVG(base);
+
+                width = base.getWidth();
+                height = base.getHeight();
+
+                doc = svgDoc;
+            }
+        } catch (Throwable t) {
+            userAgent.getLogger().error("Could not convert MathML to SVG", t);
+            width = 0;
+            height = 0;
+        }
+
+    }
+
+    public static Document createSVG(MathBase base) {
+
+        DOMImplementation impl =
+          SVGDOMImplementation.getDOMImplementation();
+        String svgNS = SVGDOMImplementation.SVG_NAMESPACE_URI;
+        Document svgdocument = impl.createDocument(svgNS, "svg", null);
+
+        SVGGraphics2D g = new SVGGraphics2D(svgdocument);
+
+        g.setSVGCanvasSize(
+          new Dimension(base.getWidth(), base.getHeight()));
+
+        //g.setColor(Color.white);
+        //g.fillRect(0, 0, base.getWidth(), base.getHeight());
+        g.setColor(Color.black);
+
+        base.paint(g);
+
+        //if (antialiasing)
+        //element.setAttribute("text-rendering", "optimizeLegibility");
+        //else
+        //element.setAttribute("text-rendering", "geometricPrecision");
+
+        // this should be done in a better way
+        Element root = g.getRoot();
+        svgdocument = impl.createDocument(svgNS, "svg", null);
+        Node node = svgdocument.importNode(root, true);
+        ((org.apache.batik.dom.svg.SVGOMDocument) svgdocument).
+        getRootElement().appendChild(node);
+
+        return svgdocument;
+
+    }
+
+    public Document getDocument() {
+        convertToSVG();
+        return doc;
+    }
+
+    public String getDocumentNamespace() {
+        if (svgDoc == null) {
+            return MathMLElementMapping.URI;
+        }
+        return "http://www.w3.org/2000/svg";
+    }
+
+    public Point2D getDimension(Point2D view) {
+        convertToSVG();
+        return new Point2D.Float(width, height);
+    }
+}
+
diff --git a/examples/mathml/src/org/apache/fop/mathml/MathMLElementMapping.java b/examples/mathml/src/org/apache/fop/mathml/MathMLElementMapping.java
new file mode 100644
index 000000000..f1f2b0fd3
--- /dev/null
+++ b/examples/mathml/src/org/apache/fop/mathml/MathMLElementMapping.java
@@ -0,0 +1,87 @@
+/* $Id$
+ * Copyright (C) 2001 The Apache Software Foundation. All rights reserved.
+ * For details on use and redistribution please refer to the
+ * LICENSE file included with these sources.
+ */
+
+package org.apache.fop.mathml;
+
+import org.apache.fop.fo.FOTreeBuilder;
+import org.apache.fop.fo.FONode;
+import org.apache.fop.fo.ElementMapping;
+import org.apache.fop.image.analyser.XMLReader;
+import org.apache.fop.image.FopImage;
+import org.w3c.dom.Document;
+
+import java.util.HashMap;
+
+import net.sourceforge.jeuclid.MathBase;
+import net.sourceforge.jeuclid.DOMMathBuilder;
+
+public class MathMLElementMapping implements ElementMapping {
+
+    public static final String URI = "http://www.w3.org/1998/Math/MathML";
+
+    private static HashMap foObjs = null;
+
+    private static synchronized void setupMathML() {
+        if (foObjs == null) {
+            foObjs = new HashMap();
+            foObjs.put("math", new ME());
+            foObjs.put(DEFAULT, new MathMLMaker());
+
+            XMLReader.setConverter(URI, new MathMLConverter());
+        }
+    }
+
+    public void addToBuilder(FOTreeBuilder builder) {
+        setupMathML();
+        builder.addMapping(URI, foObjs);
+    }
+
+    static class MathMLMaker extends ElementMapping.Maker {
+        public FONode make(FONode parent) {
+            return new MathMLObj(parent);
+        }
+    }
+
+    static class ME extends ElementMapping.Maker {
+        public FONode make(FONode parent) {
+            return new MathMLElement(parent);
+        }
+    }
+
+    static class MathMLConverter implements XMLReader.Converter {
+        public FopImage.ImageInfo convert(Document doc) {
+            try {
+                FopImage.ImageInfo info = new FopImage.ImageInfo();
+                String fontname = "Helvetica";
+                int fontstyle = 0;
+                int inlinefontstyle = 0;
+                int inlinefontsize = 12;
+                int displayfontsize = 12;
+
+                MathBase base = new MathBase(
+                                  (new DOMMathBuilder(doc)).getMathRootElement(),
+                                  fontname, fontstyle, inlinefontsize,
+                                  displayfontsize);
+
+                base.setDebug(false);
+
+                info.data = MathMLElement.createSVG(base);
+
+                info.width = base.getWidth();
+                info.height = base.getHeight();
+
+                info.mimeType = "image/svg+xml";
+                info.str = "http://www.w3.org/2000/svg";
+
+                return info;
+            } catch (Throwable t) {
+            }
+            return null;
+
+        }
+    }
+
+}
diff --git a/examples/mathml/src/org/apache/fop/mathml/MathMLObj.java b/examples/mathml/src/org/apache/fop/mathml/MathMLObj.java
new file mode 100644
index 000000000..f7f8d82ca
--- /dev/null
+++ b/examples/mathml/src/org/apache/fop/mathml/MathMLObj.java
@@ -0,0 +1,26 @@
+/* $Id$
+ * Copyright (C) 2001 The Apache Software Foundation. All rights reserved.
+ * For details on use and redistribution please refer to the
+ * LICENSE file included with these sources.
+ */
+
+package org.apache.fop.mathml;
+
+// FOP
+import org.apache.fop.fo.FONode;
+import org.apache.fop.fo.XMLObj;
+
+/**
+ * Catch all MathML object as default element.
+ */
+public class MathMLObj extends XMLObj {
+
+    public MathMLObj(FONode parent) {
+        super(parent);
+    }
+
+    public String getNameSpace() {
+        return MathMLElementMapping.URI;
+    }
+}
+