| /* |
| * 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.pdfbox; |
| |
| import java.awt.Dimension; |
| import java.awt.Graphics2D; |
| import java.awt.geom.AffineTransform; |
| import java.awt.geom.Rectangle2D; |
| import java.io.IOException; |
| import java.util.Map; |
| |
| import org.apache.pdfbox.pdmodel.PDDocument; |
| import org.apache.pdfbox.pdmodel.PDPage; |
| import org.apache.pdfbox.pdmodel.common.PDRectangle; |
| import org.apache.pdfbox.rendering.PageDrawer; |
| |
| import org.apache.xmlgraphics.image.loader.Image; |
| import org.apache.xmlgraphics.image.loader.ImageException; |
| import org.apache.xmlgraphics.image.loader.ImageFlavor; |
| import org.apache.xmlgraphics.image.loader.impl.AbstractImageConverter; |
| import org.apache.xmlgraphics.image.loader.impl.ImageGraphics2D; |
| import org.apache.xmlgraphics.image.loader.util.ImageUtil; |
| import org.apache.xmlgraphics.java2d.Graphics2DImagePainter; |
| |
| /** |
| * Image converter implementation to convert PDF pages into Java2D images. |
| */ |
| public class ImageConverterPDF2G2D extends AbstractImageConverter { |
| |
| /** {@inheritDoc} */ |
| public Image convert(Image src, Map hints) throws ImageException, |
| IOException { |
| checkSourceFlavor(src); |
| ImagePDF imgPDF = (ImagePDF)src; |
| |
| final int selectedPage = ImageUtil.needPageIndexFromURI( |
| src.getInfo().getOriginalURI()); |
| |
| PDDocument pddoc = imgPDF.getPDDocument(); |
| PDPage page = (PDPage)pddoc.getDocumentCatalog().getAllPages().get(selectedPage); |
| |
| Graphics2DImagePainter painter = new Graphics2DImagePainterPDF( |
| page); |
| |
| ImageGraphics2D g2dImage = new ImageGraphics2D(src.getInfo(), painter); |
| return g2dImage; |
| } |
| |
| /** {@inheritDoc} */ |
| public ImageFlavor getSourceFlavor() { |
| return ImagePDF.PDFBOX_IMAGE; |
| } |
| |
| /** {@inheritDoc} */ |
| public ImageFlavor getTargetFlavor() { |
| return ImageFlavor.GRAPHICS2D; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public int getConversionPenalty() { |
| return 1000; //Use only if no native embedding is possible |
| } |
| |
| private static class Graphics2DImagePainterPDF implements Graphics2DImagePainter { |
| |
| private final PDPage page; |
| |
| public Graphics2DImagePainterPDF(PDPage page) { |
| this.page = page; |
| } |
| |
| /** {@inheritDoc} */ |
| public Dimension getImageSize() { |
| PDRectangle mediaBox = page.findMediaBox(); |
| int wmpt = (int)Math.ceil(mediaBox.getWidth() * 1000); |
| int hmpt = (int)Math.ceil(mediaBox.getHeight() * 1000); |
| return new Dimension(wmpt, hmpt); |
| } |
| |
| /** {@inheritDoc} */ |
| public void paint(Graphics2D g2d, Rectangle2D area) { |
| try { |
| PDRectangle mediaBox = page.findCropBox(); |
| Dimension pageDimension = mediaBox.createDimension(); |
| |
| AffineTransform at = new AffineTransform(); |
| |
| Integer rotation = page.getRotation(); |
| if (rotation != null) { |
| switch (rotation) { |
| case 270: |
| at.scale(area.getWidth() / area.getHeight(), area.getHeight() / area.getWidth()); |
| at.translate(0, area.getWidth()); |
| at.rotate(-Math.PI / 2.0); |
| break; |
| case 180: |
| at.translate(area.getWidth(), area.getHeight()); |
| at.rotate(-Math.PI); |
| break; |
| case 90: |
| at.scale(area.getWidth() / area.getHeight(), area.getHeight() / area.getWidth()); |
| at.translate(area.getHeight(), 0); |
| at.rotate(-Math.PI * 1.5); |
| default: |
| //no additional transformations necessary |
| } |
| } |
| |
| at.translate(area.getX(), area.getY()); |
| at.scale(area.getWidth() / pageDimension.width, |
| area.getHeight() / pageDimension.height); |
| g2d.transform(at); |
| |
| PageDrawer drawer = new PageDrawer(null); |
| drawer.drawPage(g2d, page, mediaBox); |
| } catch (IOException ioe) { |
| //TODO Better exception handling |
| throw new RuntimeException("I/O error while painting PDF page", ioe); |
| } |
| } |
| |
| } |
| |
| } |