Add support for HSLF metro blobs

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1713318 13f79535-47bb-0310-9956-ffa450edef68

src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFGroupShape.java

@@ -61,7 +61,7 @@ implements XSLFShapeContainer, GroupShape<XSLFShape,XSLFTextParagraph> {
 
     protected XSLFGroupShape(CTGroupShape shape, XSLFSheet sheet){
         super(shape,sheet);
-        _shapes = sheet.buildShapes(shape);
+        _shapes = XSLFSheet.buildShapes(shape, sheet);
         _grpSpPr = shape.getGrpSpPr();
     }
 

src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFMetroShape.java

@@ -0,0 +1,60 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You under the Apache License, Version 2.0
+   (the "License"); you may not use this file except in compliance with
+   the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+==================================================================== */
+
+
+package org.apache.poi.xslf.usermodel;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+
+import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
+import org.apache.poi.openxml4j.opc.OPCPackage;
+import org.apache.poi.openxml4j.opc.PackagePart;
+import org.apache.poi.openxml4j.opc.PackagePartName;
+import org.apache.poi.openxml4j.opc.PackagingURIHelper;
+import org.apache.poi.sl.usermodel.Shape;
+import org.apache.poi.util.Internal;
+import org.apache.xmlbeans.XmlException;
+import org.openxmlformats.schemas.presentationml.x2006.main.CTGroupShape;
+
+/**
+ * Experimental class for metro blobs, i.e. an alternative escher property
+ * containing an ooxml representation of the shape.
+ * This is the helper class for HSLFMetroShape to dive into OOXML classes
+ */
+@Internal
+public class XSLFMetroShape {
+    /*
+     * parses the metro bytes to a XSLF shape
+     */
+    public static Shape<?,?> parseShape(byte metroBytes[])
+    throws InvalidFormatException, IOException, XmlException {
+        PackagePartName shapePN = PackagingURIHelper.createPartName("/drs/shapexml.xml");
+        OPCPackage pkg = null;
+        try {
+            pkg = OPCPackage.open(new ByteArrayInputStream(metroBytes));
+            PackagePart shapePart = pkg.getPart(shapePN);
+            CTGroupShape gs = CTGroupShape.Factory.parse(shapePart.getInputStream());
+            XSLFGroupShape xgs = new XSLFGroupShape(gs, null);
+            return xgs.getShapes().get(0);               
+        } finally {
+            if (pkg != null) {
+                pkg.close();
+            }
+        }
+    }
+}

src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFSheet.java

@@ -90,20 +90,20 @@ implements XSLFShapeContainer, Sheet<XSLFShape,XSLFTextParagraph> {
         throw new IllegalStateException("SlideShow was not found");
     }
 
-    protected List<XSLFShape> buildShapes(CTGroupShape spTree){
+    protected static List<XSLFShape> buildShapes(CTGroupShape spTree, XSLFSheet sheet){
         List<XSLFShape> shapes = new ArrayList<XSLFShape>();
         for(XmlObject ch : spTree.selectPath("*")){
             if(ch instanceof CTShape){ // simple shape
-                XSLFAutoShape shape = XSLFAutoShape.create((CTShape)ch, this);
+                XSLFAutoShape shape = XSLFAutoShape.create((CTShape)ch, sheet);
                 shapes.add(shape);
             } else if (ch instanceof CTGroupShape){
-                shapes.add(new XSLFGroupShape((CTGroupShape)ch, this));
+                shapes.add(new XSLFGroupShape((CTGroupShape)ch, sheet));
             } else if (ch instanceof CTConnector){
-                shapes.add(new XSLFConnectorShape((CTConnector)ch, this));
+                shapes.add(new XSLFConnectorShape((CTConnector)ch, sheet));
             } else if (ch instanceof CTPicture){
-                shapes.add(new XSLFPictureShape((CTPicture)ch, this));
+                shapes.add(new XSLFPictureShape((CTPicture)ch, sheet));
             } else if (ch instanceof CTGraphicalObjectFrame){
-                XSLFGraphicFrame shape = XSLFGraphicFrame.create((CTGraphicalObjectFrame)ch, this);
+                XSLFGraphicFrame shape = XSLFGraphicFrame.create((CTGraphicalObjectFrame)ch, sheet);
                 shapes.add(shape);
             }
         }
@@ -156,7 +156,7 @@ implements XSLFShapeContainer, Sheet<XSLFShape,XSLFTextParagraph> {
             _drawing = new XSLFDrawing(this, cgs);
         }
         if (_shapes == null) {
-            _shapes = buildShapes(cgs);
+            _shapes = buildShapes(cgs, this);
         }
     }
 

src/ooxml/testcases/org/apache/poi/xslf/usermodel/TestXSLFTextShape.java

@@ -25,10 +25,15 @@ import static org.junit.Assert.assertSame;
 import static org.junit.Assert.assertTrue;
 
 import java.awt.Color;
+import java.io.File;
 import java.io.IOException;
 import java.util.List;
 
+import org.apache.poi.POIDataSamples;
+import org.apache.poi.hslf.usermodel.HSLFTextShape;
 import org.apache.poi.sl.usermodel.SimpleShape.Placeholder;
+import org.apache.poi.sl.usermodel.SlideShow;
+import org.apache.poi.sl.usermodel.SlideShowFactory;
 import org.apache.poi.sl.usermodel.TextParagraph.TextAlign;
 import org.apache.poi.sl.usermodel.VerticalAlignment;
 import org.apache.poi.xslf.XSLFTestDataSamples;
@@ -40,9 +45,6 @@ import org.openxmlformats.schemas.drawingml.x2006.main.STTextAlignType;
 import org.openxmlformats.schemas.presentationml.x2006.main.CTPlaceholder;
 import org.openxmlformats.schemas.presentationml.x2006.main.STPlaceholderType;
 
-/**
- * @author Yegor Kozlov
- */
 public class TestXSLFTextShape {
 
     @Test
@@ -913,4 +915,16 @@ public class TestXSLFTextShape {
         
         ppt.close();
     }
+    
+    @Test
+    public void metroBlob() throws IOException {
+        File f = POIDataSamples.getSlideShowInstance().getFile("bug52297.ppt");
+        SlideShow<?,?> ppt = SlideShowFactory.create(f);
+        HSLFTextShape sh = (HSLFTextShape)ppt.getSlides().get(1).getShapes().get(3);
+        XSLFAutoShape xsh = (XSLFAutoShape)sh.getMetroShape();
+        String textExp = " ___ ___ ___ ________ __  _______ ___  ___________  __________ __ _____ ___ ___ ___ _______ ____ ______ ___________  _____________ ___ _______ ______  ____ ______ __ ___________  __________ ___ _________  _____ ________ __________  ___ _______ __________ ";
+        String textAct = xsh.getText();
+        ppt.close();
+        assertEquals(textExp, textAct);
+    }
 }

src/scratchpad/src/org/apache/poi/hslf/model/HSLFMetroShape.java

@@ -0,0 +1,83 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You under the Apache License, Version 2.0
+   (the "License"); you may not use this file except in compliance with
+   the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+==================================================================== */
+
+package org.apache.poi.hslf.model;
+
+import java.lang.reflect.Method;
+
+import org.apache.poi.ddf.AbstractEscherOptRecord;
+import org.apache.poi.ddf.EscherComplexProperty;
+import org.apache.poi.ddf.EscherProperties;
+import org.apache.poi.ddf.EscherTertiaryOptRecord;
+import org.apache.poi.hslf.usermodel.HSLFShape;
+import org.apache.poi.sl.usermodel.Shape;
+import org.apache.poi.util.Internal;
+import org.apache.poi.util.POILogFactory;
+import org.apache.poi.util.POILogger;
+
+/**
+ * Experimental class for metro blobs, i.e. an alternative escher property
+ * containing an ooxml representation of the shape
+ */
+@Internal
+public class HSLFMetroShape<T extends Shape<?,?>> {
+    private static final POILogger LOGGER = POILogFactory.getLogger(HSLFMetroShape.class);
+    
+    private final HSLFShape shape;
+
+    public HSLFMetroShape(HSLFShape shape) {
+        this.shape = shape;
+    }
+    
+    /**
+     * @return the bytes of the metro blob, which are bytes of an OPCPackage, i.e. a zip stream 
+     */
+    public byte[] getMetroBytes() {
+        AbstractEscherOptRecord opt = shape.getEscherChild(EscherTertiaryOptRecord.RECORD_ID);
+        if (opt != null) {
+            EscherComplexProperty ep = (EscherComplexProperty)opt.lookup(EscherProperties.GROUPSHAPE__METROBLOB);
+            if (ep != null) {
+                return ep.getComplexData();
+            }
+        }
+        return null;
+    }
+    
+    /**
+     * @return the metro blob shape or null if either there's no metro blob or the ooxml classes
+     * aren't in the classpath
+     */
+    @SuppressWarnings("unchecked")
+    public T getShape() {
+        byte metroBytes[] = getMetroBytes();
+        if (metroBytes == null) {
+            return null;
+        }
+        
+        // org.apache.poi.xslf.usermodel.XSLFMetroShape
+        ClassLoader cl = Thread.currentThread().getContextClassLoader();
+        try {
+            Class<?> ms = cl.loadClass("org.apache.poi.xslf.usermodel.XSLFMetroShape");
+            Method m = ms.getMethod("parseShape", byte[].class);
+            return (T)m.invoke(null, new Object[]{metroBytes});
+        } catch (Exception e) {
+            LOGGER.log(POILogger.ERROR, "can't process metro blob, check if all dependencies for POI OOXML are in the classpath.", e);
+            return null;
+        }
+    }
+}
+

src/scratchpad/src/org/apache/poi/hslf/usermodel/HSLFSlide.java

@@ -499,4 +499,9 @@ public final class HSLFSlide extends HSLFSheet implements Slide<HSLFShape,HSLFTe
         // TODO Auto-generated method stub
 
     }
+    
+    @Override
+    public boolean getFollowMasterGraphics() {
+        return getFollowMasterObjects();
+    }
 }

src/scratchpad/src/org/apache/poi/hslf/usermodel/HSLFTextBox.java

@@ -17,8 +17,12 @@
 
 package org.apache.poi.hslf.usermodel;
 
-import org.apache.poi.ddf.*;
+import org.apache.poi.ddf.EscherContainerRecord;
-import org.apache.poi.sl.usermodel.*;
+import org.apache.poi.ddf.EscherProperties;
+import org.apache.poi.sl.usermodel.ShapeContainer;
+import org.apache.poi.sl.usermodel.ShapeType;
+import org.apache.poi.sl.usermodel.TextBox;
+import org.apache.poi.sl.usermodel.VerticalAlignment;
 
 /**
  * Represents a TextFrame shape in PowerPoint.
@@ -88,5 +92,4 @@ public class HSLFTextBox extends HSLFTextShape implements TextBox<HSLFShape,HSLF
         setVerticalAlignment(VerticalAlignment.TOP);
         setEscherProperty(EscherProperties.TEXT__SIZE_TEXT_TO_FIT_SHAPE, 0x20002);
     }
-
 }

src/scratchpad/src/org/apache/poi/hslf/usermodel/HSLFTextParagraph.java

@@ -994,6 +994,15 @@ public final class HSLFTextParagraph implements TextParagraph<HSLFShape,HSLFText
         return sb.toString();
     }
     
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        for (HSLFTextRun r : getTextRuns()) {
+            sb.append(r.getRawText());
+        }
+        return toExternalString(sb.toString(), getRunType());
+    }
+
     /**
      * Returns a new string with line breaks converted into internal ppt
      * representation

src/scratchpad/src/org/apache/poi/hslf/usermodel/HSLFTextShape.java

@@ -34,6 +34,7 @@ import org.apache.poi.ddf.EscherProperties;
 import org.apache.poi.ddf.EscherSimpleProperty;
 import org.apache.poi.ddf.EscherTextboxRecord;
 import org.apache.poi.hslf.exceptions.HSLFException;
+import org.apache.poi.hslf.model.HSLFMetroShape;
 import org.apache.poi.hslf.record.EscherTextboxWrapper;
 import org.apache.poi.hslf.record.InteractiveInfo;
 import org.apache.poi.hslf.record.InteractiveInfoAtom;
@@ -881,4 +882,14 @@ implements TextShape<HSLFShape,HSLFTextParagraph> {
     }
 
 
+    /**
+     * Get alternative representation of text shape stored as metro blob escher property.
+     * The returned shape is the first shape in stored group shape of the metro blob
+     *
+     * @return null, if there's no alternative representation, otherwise the text shape
+     */
+    public TextShape<?,?> getMetroShape() {
+        HSLFMetroShape<TextShape<?,?>> mbs = new HSLFMetroShape<TextShape<?,?>>(this);
+        return mbs.getShape();
+    }
 }