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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;
/**
* A FOP base implementation of a Batik BridgeContext.
*/
public abstract class AbstractFOPBridgeContext extends BridgeContext {
/** the font list */
protected final FontInfo fontInfo;
/** image manager */
protected final ImageManager imageManager;
/** image session context */
protected final ImageSessionContext imageSessionContext;
/** link transform */
protected final 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 imageManager an image manager
* @param imageSessionContext an image session context
* @param linkTransform AffineTransform to properly place links,
* may be null
*/
public AbstractFOPBridgeContext(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 imageManager an image manager
* @param imageSessionContext an image session context
* @param linkTransform AffineTransform to properly place links,
* may be null
*/
public AbstractFOPBridgeContext(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
* @param imageManager an image manager
* @param imageSessionContext an image session context
*/
public AbstractFOPBridgeContext(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;
}
/**
* @param className name of bridge class to load and construct
* @param testFor class name to test for presence
*/
protected void putElementBridgeConditional(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)
}
}
// Make sure any 'sub bridge contexts' also have our bridges.
//TODO There's no matching method in the super-class here
/** @return new bridge context */
public abstract BridgeContext createBridgeContext();
}
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