FOP-2448: PDF to PS deduplication of images

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@1658710 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/fop/render/ps/PSDocumentHandler.java

@@ -30,6 +30,7 @@ import java.io.OutputStream;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
@@ -142,7 +143,7 @@ public class PSDocumentHandler extends AbstractBinaryWritingIFDocumentHandler {
         return new PSRendererConfigurator(getUserAgent(), new PSRendererConfigParser());
     }
 
-    PSRenderingUtil getPSUtil() {
+    public PSRenderingUtil getPSUtil() {
         return this.psUtil;
     }
 
@@ -160,12 +161,7 @@ public class PSDocumentHandler extends AbstractBinaryWritingIFDocumentHandler {
             }
 
             //Setup for PostScript generation
-            this.gen = new PSGenerator(out) {
-                /** Need to subclass PSGenerator to have better URI resolution */
-                public Source resolveURI(String uri) {
-                    return getUserAgent().resolveURI(uri);
-                }
-            };
+            this.gen = new FOPPSGeneratorImpl(out);
             this.gen.setPSLevel(psUtil.getLanguageLevel());
             this.currentPageNumber = 0;
             this.documentBoundingBox = new Rectangle2D.Double();
@@ -179,6 +175,37 @@ public class PSDocumentHandler extends AbstractBinaryWritingIFDocumentHandler {
         }
     }
 
+    public interface FOPPSGenerator {
+        PSDocumentHandler getHandler();
+        BufferedOutputStream getTempStream(URI uri) throws IOException;
+        Map<Integer, URI> getImages();
+    }
+
+    public class FOPPSGeneratorImpl extends PSGenerator implements FOPPSGenerator {
+        private Map<Integer, URI> images = new HashMap<Integer, URI>();
+        public FOPPSGeneratorImpl(OutputStream out) {
+            super(out);
+        }
+
+        /** Need to subclass PSGenerator to have better URI resolution */
+        @Override
+        public Source resolveURI(String uri) {
+            return getUserAgent().resolveURI(uri);
+        }
+
+        public PSDocumentHandler getHandler() {
+            return PSDocumentHandler.this;
+        }
+
+        public BufferedOutputStream getTempStream(URI uri) throws IOException {
+            return new BufferedOutputStream(getUserAgent().getResourceResolver().getOutputStream(uri));
+        }
+
+        public Map<Integer, URI> getImages() {
+            return images;
+        }
+    }
+
     private void writeHeader() throws IOException {
         //PostScript Header
         gen.writeln(DSCConstants.PS_ADOBE_30);
@@ -558,7 +585,7 @@ public class PSDocumentHandler extends AbstractBinaryWritingIFDocumentHandler {
      * @param uri the image URI
      * @return a PSResource instance
      */
-    protected PSResource getFormForImage(String uri) {
+    public PSResource getFormForImage(String uri) {
         if (uri == null || "".equals(uri)) {
             throw new IllegalArgumentException("uri must not be empty or null");
         }

src/java/org/apache/fop/render/ps/PSGraphics2DAdapter.java

@@ -26,6 +26,7 @@ import java.awt.image.BufferedImage;
 import java.io.IOException;
 import java.util.Map;
 
+import org.apache.xmlgraphics.java2d.GeneralGraphics2DImagePainter;
 import org.apache.xmlgraphics.java2d.Graphics2DImagePainter;
 import org.apache.xmlgraphics.java2d.ps.PSGraphics2D;
 import org.apache.xmlgraphics.ps.PSGenerator;
@@ -94,7 +95,9 @@ public class PSGraphics2DAdapter extends AbstractGraphics2DAdapter {
         gen.concatMatrix(sx, 0, 0, sy, fx, fy);
 
         final boolean textAsShapes = false;
-        PSGraphics2D graphics = new PSGraphics2D(textAsShapes, gen);
+        PSGraphics2D graphics = (painter instanceof GeneralGraphics2DImagePainter)
+                ? (PSGraphics2D) ((GeneralGraphics2DImagePainter) painter).getGraphics(textAsShapes, gen)
+                : new PSGraphics2D(textAsShapes, gen);
         graphics.setGraphicContext(new org.apache.xmlgraphics.java2d.GraphicContext());
         AffineTransform transform = new AffineTransform();
         // scale to viewbox

src/java/org/apache/fop/render/ps/PSImageHandlerGraphics2D.java

@@ -30,6 +30,7 @@ import org.apache.xmlgraphics.image.loader.Image;
 import org.apache.xmlgraphics.image.loader.ImageFlavor;
 import org.apache.xmlgraphics.image.loader.ImageInfo;
 import org.apache.xmlgraphics.image.loader.impl.ImageGraphics2D;
+import org.apache.xmlgraphics.java2d.GeneralGraphics2DImagePainter;
 import org.apache.xmlgraphics.java2d.Graphics2DImagePainter;
 import org.apache.xmlgraphics.java2d.ps.PSGraphics2D;
 import org.apache.xmlgraphics.ps.FormGenerator;
@@ -84,7 +85,9 @@ public class PSImageHandlerGraphics2D implements PSImageHandler {
         gen.concatMatrix(sx, 0, 0, sy, fx, fy);
 
         final boolean textAsShapes = false;
-        PSGraphics2D graphics = new PSGraphics2D(textAsShapes, gen);
+        PSGraphics2D graphics = (painter instanceof GeneralGraphics2DImagePainter)
+                ? (PSGraphics2D) ((GeneralGraphics2DImagePainter) painter).getGraphics(textAsShapes, gen)
+                : new PSGraphics2D(textAsShapes, gen);
         graphics.setGraphicContext(new org.apache.xmlgraphics.java2d.GraphicContext());
         AffineTransform transform = new AffineTransform();
         // scale to viewbox

src/java/org/apache/fop/render/ps/PSImageUtils.java

@@ -48,6 +48,9 @@ public class PSImageUtils extends org.apache.xmlgraphics.ps.PSImageUtils {
      * @return true if the image shall be inlined, false if forms shall be used.
      */
     public static boolean isImageInlined(ImageInfo info, PSRenderingContext renderingContext) {
+        if (info.getMimeType().equals("application/pdf")) {
+            return true;
+        }
         String uri = info.getOriginalURI();
         if (uri == null || "".equals(uri)) {
             return true;