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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.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);
- }
-
- /**
- * 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;
- }
-
- }
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