| /* |
| * 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.apps.FOPException; |
| import org.apache.fop.datatypes.Length; |
| import org.apache.fop.events.ResourceEventProducer; |
| 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); |
| } |
| |
| /** |
| * 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} |
| */ |
| protected void endOfNode() throws FOPException { |
| if (firstChild == null) { |
| missingChildElementError("one (1) non-XSL namespace child"); |
| } |
| getFOEventHandler().foreignObject(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; |
| } |
| |
| } |