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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.io.FileNotFoundException;
- import java.io.IOException;
-
- import org.xml.sax.Locator;
-
- import org.apache.xmlgraphics.image.loader.ImageException;
- import org.apache.xmlgraphics.image.loader.ImageInfo;
- import org.apache.xmlgraphics.image.loader.ImageManager;
-
- import org.apache.fop.ResourceEventProducer;
- import org.apache.fop.apps.FOPException;
- import org.apache.fop.apps.FOUserAgent;
- import org.apache.fop.datatypes.Length;
- import org.apache.fop.datatypes.URISpecification;
- import org.apache.fop.fo.FONode;
- import org.apache.fop.fo.PropertyList;
- import org.apache.fop.fo.ValidationException;
- import org.apache.fop.fo.properties.FixedLength;
-
- /**
- * Class modelling the <a href="http://www.w3.org/TR/xsl/#fo_external-graphic">
- * <code>fo:external-graphic</code></a> object.
- * This FO node handles the external graphic. It creates an image
- * inline area that can be added to the area tree.
- */
- public class ExternalGraphic extends AbstractGraphics {
-
- // The value of properties relevant for fo:external-graphic.
- // All but one of the e-g properties are kept in AbstractGraphics
- private String src;
- // End of property values
-
- //Additional values
- private String url;
- private int intrinsicWidth;
- private int intrinsicHeight;
- private Length intrinsicAlignmentAdjust;
-
- /**
- * Create a new ExternalGraphic node that is a child
- * of the given {@link FONode}.
- *
- * @param parent the parent of this node
- */
- public ExternalGraphic(FONode parent) {
- super(parent);
- }
-
- /** {@inheritDoc} */
- public void bind(PropertyList pList) throws FOPException {
- super.bind(pList);
- src = pList.get(PR_SRC).getString();
-
- //Additional processing: obtain the image's intrinsic size and baseline information
- url = URISpecification.getURL(src);
- FOUserAgent userAgent = getUserAgent();
- ImageManager manager = userAgent.getFactory().getImageManager();
- ImageInfo info = null;
- try {
- info = manager.getImageInfo(url, userAgent.getImageSessionContext());
- } catch (ImageException e) {
- ResourceEventProducer eventProducer = ResourceEventProducer.Provider.get(
- getUserAgent().getEventBroadcaster());
- eventProducer.imageError(this, url, e, getLocator());
- } catch (FileNotFoundException fnfe) {
- ResourceEventProducer eventProducer = ResourceEventProducer.Provider.get(
- getUserAgent().getEventBroadcaster());
- eventProducer.imageNotFound(this, url, fnfe, getLocator());
- } catch (IOException ioe) {
- ResourceEventProducer eventProducer = ResourceEventProducer.Provider.get(
- getUserAgent().getEventBroadcaster());
- eventProducer.imageIOError(this, url, ioe, getLocator());
- }
- if (info != null) {
- this.intrinsicWidth = info.getSize().getWidthMpt();
- this.intrinsicHeight = info.getSize().getHeightMpt();
- int baseline = info.getSize().getBaselinePositionFromBottom();
- if (baseline != 0) {
- this.intrinsicAlignmentAdjust
- = FixedLength.getInstance(-baseline);
- }
- }
- }
-
- /** {@inheritDoc} */
- protected void startOfNode() throws FOPException {
- super.startOfNode();
- getFOEventHandler().image(this);
- }
-
- /**
- * {@inheritDoc}
- * <br>XSL Content Model: empty
- */
- protected void validateChildNode(Locator loc, String nsURI, String localName)
- throws ValidationException {
- if (FO_URI.equals(nsURI)) {
- invalidChildError(loc, nsURI, localName);
- }
- }
-
- /** @return the "src" property */
- public String getSrc() {
- return src;
- }
-
- /** @return Get the resulting URL based on the src property */
- public String getURL() {
- return url;
- }
-
- /** {@inheritDoc} */
- public String getLocalName() {
- return "external-graphic";
- }
-
- /**
- * {@inheritDoc}
- * @return {@link org.apache.fop.fo.Constants#FO_EXTERNAL_GRAPHIC}
- */
- public int getNameId() {
- return FO_EXTERNAL_GRAPHIC;
- }
-
- /** {@inheritDoc} */
- public int getIntrinsicWidth() {
- return this.intrinsicWidth;
- }
-
- /** {@inheritDoc} */
- public int getIntrinsicHeight() {
- return this.intrinsicHeight;
- }
-
- /** {@inheritDoc} */
- public Length getIntrinsicAlignmentAdjust() {
- return this.intrinsicAlignmentAdjust;
- }
-
- }
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