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/*
* 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.
*/
/* $Id$ */
package org.apache.fop.svg;
import java.awt.geom.AffineTransform;
import java.lang.reflect.Constructor;
import org.apache.batik.bridge.Bridge;
import org.apache.batik.bridge.BridgeContext;
import org.apache.batik.bridge.DocumentLoader;
import org.apache.batik.bridge.UserAgent;
import org.apache.xmlgraphics.image.loader.ImageManager;
import org.apache.xmlgraphics.image.loader.ImageSessionContext;
import org.apache.fop.fonts.FontInfo;
/**
* BridgeContext which registers the custom bridges for PDF output.
*/
public class PDFBridgeContext extends BridgeContext {
/** The font list. */
private final FontInfo fontInfo;
private final ImageManager imageManager;
private final ImageSessionContext imageSessionContext;
private AffineTransform linkTransform;
/**
* Constructs a new bridge context.
* @param userAgent the user agent
* @param loader the Document Loader to use for referenced documents.
* @param fontInfo the font list for the text painter, may be null
* in which case text is painted as shapes
* @param linkTransform AffineTransform to properly place links,
* may be null
*/
public PDFBridgeContext(UserAgent userAgent,
DocumentLoader loader,
FontInfo fontInfo,
ImageManager imageManager,
ImageSessionContext imageSessionContext,
AffineTransform linkTransform) {
super(userAgent, loader);
this.fontInfo = fontInfo;
this.imageManager = imageManager;
this.imageSessionContext = imageSessionContext;
this.linkTransform = linkTransform;
}
/**
* Constructs a new bridge context.
* @param userAgent the user agent
* @param fontInfo the font list for the text painter, may be null
* in which case text is painted as shapes
* @param linkTransform AffineTransform to properly place links,
* may be null
*/
public PDFBridgeContext(UserAgent userAgent,
FontInfo fontInfo,
ImageManager imageManager,
ImageSessionContext imageSessionContext,
AffineTransform linkTransform) {
super(userAgent);
this.fontInfo = fontInfo;
this.imageManager = imageManager;
this.imageSessionContext = imageSessionContext;
this.linkTransform = linkTransform;
}
/**
* Constructs a new bridge context.
* @param userAgent the user agent
* @param fontInfo the font list for the text painter, may be null
* in which case text is painted as shapes
*/
public PDFBridgeContext(UserAgent userAgent,
FontInfo fontInfo,
ImageManager imageManager,
ImageSessionContext imageSessionContext) {
this(userAgent, fontInfo, imageManager, imageSessionContext, null);
}
/**
* Returns the ImageManager to be used by the ImageElementBridge.
* @return the image manager
*/
public ImageManager getImageManager() {
return this.imageManager;
}
/**
* Returns the ImageSessionContext to be used by the ImageElementBridge.
* @return the image session context
*/
public ImageSessionContext getImageSessionContext() {
return this.imageSessionContext;
}
private void putPDFElementBridgeConditional(String className, String testFor) {
try {
Class.forName(testFor);
//if we get here the test class is available
Class clazz = Class.forName(className);
Constructor constructor = clazz.getConstructor(new Class[] {FontInfo.class});
putBridge((Bridge)constructor.newInstance(new Object[] {fontInfo}));
} catch (Throwable t) {
//simply ignore (bridges instantiated over this method are optional)
}
}
/** {@inheritDoc} */
public void registerSVGBridges() {
super.registerSVGBridges();
if (fontInfo != null) {
PDFTextElementBridge textElementBridge = new PDFTextElementBridge(fontInfo);
putBridge(textElementBridge);
//Batik flow text extension (may not always be available)
//putBridge(new PDFBatikFlowTextElementBridge(fontInfo);
putPDFElementBridgeConditional(
"org.apache.fop.svg.PDFBatikFlowTextElementBridge",
"org.apache.batik.extension.svg.BatikFlowTextElementBridge");
//SVG 1.2 flow text support
//putBridge(new PDFSVG12TextElementBridge(fontInfo)); //-->Batik 1.7
putPDFElementBridgeConditional(
"org.apache.fop.svg.PDFSVG12TextElementBridge",
"org.apache.batik.bridge.svg12.SVG12TextElementBridge");
//putBridge(new PDFSVGFlowRootElementBridge(fontInfo));
putPDFElementBridgeConditional(
"org.apache.fop.svg.PDFSVGFlowRootElementBridge",
"org.apache.batik.bridge.svg12.SVGFlowRootElementBridge");
}
PDFAElementBridge pdfAElementBridge = new PDFAElementBridge();
if (linkTransform != null) {
pdfAElementBridge.setCurrentTransform(linkTransform);
} else {
pdfAElementBridge.setCurrentTransform(new AffineTransform());
}
putBridge(pdfAElementBridge);
putBridge(new PDFImageElementBridge());
}
// Make sure any 'sub bridge contexts' also have our bridges.
//TODO There's no matching method in the super-class here
public BridgeContext createBridgeContext() {
return new PDFBridgeContext(getUserAgent(), getDocumentLoader(),
fontInfo,
getImageManager(),
getImageSessionContext(),
linkTransform);
}
}
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