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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.render.pdf;
-
- import java.awt.Rectangle;
- import java.io.IOException;
-
- import org.apache.xmlgraphics.image.loader.Image;
-
- import org.apache.fop.pdf.PDFImage;
- import org.apache.fop.pdf.PDFXObject;
- import org.apache.fop.render.ImageHandler;
- import org.apache.fop.render.RenderingContext;
- import org.apache.fop.render.pdf.PDFLogicalStructureHandler.MarkedContentInfo;
-
- /**
- * A partial implementation of a PDF-specific image handler, containing the code that is
- * common between image flavors.
- */
- abstract class AbstractPDFImageHandler implements ImageHandler {
-
- /** {@inheritDoc} */
- public void handleImage(RenderingContext context, Image image, Rectangle pos)
- throws IOException {
- assert context instanceof PDFRenderingContext;
- PDFRenderingContext pdfContext = (PDFRenderingContext)context;
- PDFContentGenerator generator = pdfContext.getGenerator();
- PDFImage pdfimage = createPDFImage(image, image.getInfo().getOriginalURI());
- PDFXObject xobj = generator.getDocument().addImage(
- generator.getResourceContext(), pdfimage);
-
- float x = (float)pos.getX() / 1000f;
- float y = (float)pos.getY() / 1000f;
- float w = (float)pos.getWidth() / 1000f;
- float h = (float)pos.getHeight() / 1000f;
- if (context.getUserAgent().isAccessibilityEnabled()) {
- MarkedContentInfo mci = pdfContext.getMarkedContentInfo();
- generator.placeImage(x, y, w, h, xobj, mci.tag, mci.mcid);
- } else {
- generator.placeImage(x, y, w, h, xobj);
- }
- }
-
- /**
- * Creates a PDF image object out of the given image.
- *
- * @param image an image
- * @param xobjectKey a key for retrieval of the image from the document's XObject collection
- * @return a suitable {@link PDFImage} implementation that can handle the flavour of
- * the given image
- */
- abstract PDFImage createPDFImage(Image image, String xobjectKey);
- }
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