/* * 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.fo.flow; import java.awt.geom.Point2D; import org.xml.sax.Locator; import org.apache.xmlgraphics.util.QName; import org.apache.fop.ResourceEventProducer; import org.apache.fop.apps.FOPException; import org.apache.fop.datatypes.Length; import org.apache.fop.fo.FONode; import org.apache.fop.fo.ValidationException; import org.apache.fop.fo.XMLObj; /** * Class modelling the <a href="http://www.w3.org/TR/xsl/#fo_instream-foreign-object"> * <code>fo:instream-foreign-object</code></a> object. * This is an atomic inline object that contains XML data. */ public class InstreamForeignObject extends AbstractGraphics { // The value of properties relevant for fo:instream-foreign-object. // All property values contained in AbstractGraphics // End of property values //Additional value private Point2D intrinsicDimensions; private boolean instrisicSizeDetermined; private Length intrinsicAlignmentAdjust; /** * Constructs an instream-foreign-object object * (called by {@link org.apache.fop.fo.ElementMapping.Maker}). * * @param parent the parent {@link FONode} */ public InstreamForeignObject(FONode parent) { super(parent); } @Override public void startOfNode() throws FOPException { super.startOfNode(); getFOEventHandler().startInstreamForeignObject(this); } /** * Make sure content model satisfied, if so then tell the * {@link org.apache.fop.fo.FOEventHandler} that we are at * the end of the instream-foreign-object. * {@inheritDoc} */ public void endOfNode() throws FOPException { if (firstChild == null) { missingChildElementError("one (1) non-XSL namespace child"); } getFOEventHandler().endInstreamForeignObject(this); } /** * {@inheritDoc} * <br>XSL Content Model: one (1) non-XSL namespace child */ protected void validateChildNode(Locator loc, String nsURI, String localName) throws ValidationException { if (FO_URI.equals(nsURI)) { invalidChildError(loc, nsURI, localName); } else if (firstChild != null) { tooManyNodesError(loc, new QName(nsURI, null, localName)); } } /** {@inheritDoc} */ public String getLocalName() { return "instream-foreign-object"; } /** * {@inheritDoc} * @return {@link org.apache.fop.fo.Constants#FO_INSTREAM_FOREIGN_OBJECT} */ public int getNameId() { return FO_INSTREAM_FOREIGN_OBJECT; } /** Preloads the image so the intrinsic size is available. */ private void prepareIntrinsicSize() { if (!this.instrisicSizeDetermined) { XMLObj child = (XMLObj) firstChild; Point2D csize = new Point2D.Float(-1, -1); intrinsicDimensions = child.getDimension(csize); if (intrinsicDimensions == null) { ResourceEventProducer eventProducer = ResourceEventProducer.Provider.get( getUserAgent().getEventBroadcaster()); eventProducer.ifoNoIntrinsicSize(this, getLocator()); } intrinsicAlignmentAdjust = child.getIntrinsicAlignmentAdjust(); this.instrisicSizeDetermined = true; } } /** {@inheritDoc} */ public int getIntrinsicWidth() { prepareIntrinsicSize(); if (intrinsicDimensions != null) { return (int)(intrinsicDimensions.getX() * 1000); } else { return 0; } } /** {@inheritDoc} */ public int getIntrinsicHeight() { prepareIntrinsicSize(); if (intrinsicDimensions != null) { return (int)(intrinsicDimensions.getY() * 1000); } else { return 0; } } /** {@inheritDoc} */ public Length getIntrinsicAlignmentAdjust() { prepareIntrinsicSize(); return intrinsicAlignmentAdjust; } /** {@inheritDoc} */ protected void addChildNode(FONode child) throws FOPException { super.addChildNode(child); } /** @return the {@link XMLObj} child node of the instream-foreign-object. */ public XMLObj getChildXMLObj() { return (XMLObj) firstChild; } }