| /* |
| * 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.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} */ |
| public 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; |
| } |
| |
| } |