diff options
Diffstat (limited to 'src/main/java/org/pdfbox/util/operator/pagedrawer/Invoke.java')
| -rw-r--r-- | src/main/java/org/pdfbox/util/operator/pagedrawer/Invoke.java | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/src/main/java/org/pdfbox/util/operator/pagedrawer/Invoke.java b/src/main/java/org/pdfbox/util/operator/pagedrawer/Invoke.java new file mode 100644 index 0000000..3d99b74 --- /dev/null +++ b/src/main/java/org/pdfbox/util/operator/pagedrawer/Invoke.java @@ -0,0 +1,180 @@ +/**
+ * Copyright (c) 2005, www.pdfbox.org
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of pdfbox; nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://www.pdfbox.org
+ *
+ */
+package org.pdfbox.util.operator.pagedrawer;
+
+import java.awt.Dimension;
+import java.awt.Graphics2D;
+import java.awt.geom.AffineTransform;
+import java.awt.image.BufferedImage;
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.log4j.Logger;
+import org.pdfbox.cos.COSName;
+import org.pdfbox.pdfviewer.PageDrawer;
+import org.pdfbox.pdmodel.PDPage;
+import org.pdfbox.pdmodel.graphics.xobject.PDXObject;
+import org.pdfbox.pdmodel.graphics.xobject.PDXObjectImage;
+import org.pdfbox.util.Matrix;
+import org.pdfbox.util.PDFOperator;
+import org.pdfbox.util.operator.OperatorProcessor;
+
+/**
+ * Implementation of content stream operator for page drawer.
+ *
+ * @author Ben Litchfield (ben@benlitchfield.com)
+ * @version $Revision: 1.1 $
+ */
+public class Invoke extends OperatorProcessor
+{
+ private static Logger log = Logger.getLogger( Invoke.class );
+
+ /**
+ * process : re : append rectangle to path.
+ * @param operator The operator that is being executed.
+ * @param arguments List
+ * @throws IOException If there is an error invoking the sub object.
+ */
+ public void process(PDFOperator operator, List arguments) throws IOException
+ {
+ PageDrawer drawer = (PageDrawer)context;
+ PDPage page = drawer.getPage();
+ Dimension pageSize = drawer.getPageSize();
+ Graphics2D graphics = drawer.getGraphics();
+ COSName objectName = (COSName)arguments.get( 0 );
+ Map xobjects = drawer.getResources().getXObjects();
+ PDXObject xobject = (PDXObject)xobjects.get( objectName.getName() );
+ if( xobject instanceof PDXObjectImage )
+ {
+ PDXObjectImage image = (PDXObjectImage)xobject;
+ try
+ {
+ BufferedImage awtImage = image.getRGBImage();
+ Matrix ctm = drawer.getGraphicsState().getCurrentTransformationMatrix();
+
+ int width = awtImage.getWidth();
+ int height = awtImage.getHeight();
+
+ double rotationInRadians =(page.findRotation() * Math.PI)/180;
+
+
+ AffineTransform rotation = new AffineTransform();
+ rotation.setToRotation( rotationInRadians );
+ AffineTransform rotationInverse = rotation.createInverse();
+ Matrix rotationInverseMatrix = new Matrix();
+ rotationInverseMatrix.setFromAffineTransform( rotationInverse );
+ Matrix rotationMatrix = new Matrix();
+ rotationMatrix.setFromAffineTransform( rotation );
+
+ Matrix unrotatedCTM = ctm.multiply( rotationInverseMatrix );
+
+ Matrix scalingParams = unrotatedCTM.extractScaling();
+ Matrix scalingMatrix = Matrix.getScaleInstance(1f/width,1f/height);
+ scalingParams = scalingParams.multiply( scalingMatrix );
+
+ Matrix translationParams = unrotatedCTM.extractTranslating();
+ Matrix translationMatrix = null;
+ int pageRotation = page.findRotation();
+ if( pageRotation == 0 )
+ {
+ translationParams.setValue(2,1, -translationParams.getValue( 2,1 ));
+ translationMatrix = Matrix.getTranslatingInstance(
+ 0, (float)pageSize.getHeight()-height*scalingParams.getYScale() );
+ }
+ else if( pageRotation == 90 )
+ {
+ translationMatrix = Matrix.getTranslatingInstance( 0, (float)pageSize.getHeight() );
+ }
+ else
+ {
+ //TODO need to figure out other cases
+ }
+ translationParams = translationParams.multiply( translationMatrix );
+
+ AffineTransform at = new AffineTransform(
+ scalingParams.getValue( 0,0), 0,
+ 0, scalingParams.getValue( 1, 1),
+ translationParams.getValue(2,0), translationParams.getValue( 2,1 )
+ );
+
+
+
+
+ //at.setToTranslation( pageSize.getHeight()-ctm.getValue(2,0),ctm.getValue(2,1) );
+ //at.setToScale( ctm.getValue(0,0)/width, ctm.getValue(1,1)/height);
+ //at.setToRotation( (page.findRotation() * Math.PI)/180 );
+
+
+
+ //AffineTransform rotation = new AffineTransform();
+ //rotation.rotate( (90*Math.PI)/180);
+
+ /*
+
+ // The transformation should be done
+ // 1 - Translation
+ // 2 - Rotation
+ // 3 - Scale or Skew
+ AffineTransform at = new AffineTransform();
+
+ // Translation
+ at = new AffineTransform();
+ //at.setToTranslation((double)ctm.getValue(0,0),
+ // (double)ctm.getValue(0,1));
+
+ // Rotation
+ //AffineTransform toAdd = new AffineTransform();
+ toAdd.setToRotation(1.5705);
+ toAdd.setToRotation(ctm.getValue(2,0)*(Math.PI/180));
+ at.concatenate(toAdd);
+ */
+
+ // Scale / Skew?
+ //toAdd.setToScale(1, 1);
+ //at.concatenate(toAdd);
+
+ graphics.drawImage( awtImage, at, null );
+ }
+ catch( Exception e )
+ {
+ e.printStackTrace();
+ }
+ }
+ else
+ {
+ log.warn( "Unknown xobject type:" + xobject );
+ }
+
+
+ //invoke named object.
+ }
+}
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