/* * $Id$ * ============================================================================ * The Apache Software License, Version 1.1 * ============================================================================ * * Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved. * * Redistribution and use in source and binary forms, with or without modifica- * tion, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * 3. The end-user documentation included with the redistribution, if any, must * include the following acknowledgment: "This product includes software * developed by the Apache Software Foundation (http://www.apache.org/)." * Alternately, this acknowledgment may appear in the software itself, if * and wherever such third-party acknowledgments normally appear. * * 4. The names "FOP" and "Apache Software Foundation" must not be used to * endorse or promote products derived from this software without prior * written permission. For written permission, please contact * apache@apache.org. * * 5. Products derived from this software may not be called "Apache", nor may * "Apache" appear in their name, without prior written permission of the * Apache Software Foundation. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU- * DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ============================================================================ * * This software consists of voluntary contributions made by many individuals * on behalf of the Apache Software Foundation and was originally created by * James Tauber . For more information on the Apache * Software Foundation, please see . */ package org.apache.fop.render.ps; import java.awt.Color; import java.io.IOException; import org.apache.avalon.framework.configuration.Configuration; import org.apache.avalon.framework.container.ContainerUtil; import org.apache.batik.bridge.BridgeContext; import org.apache.batik.transcoder.TranscoderException; import org.apache.batik.transcoder.TranscoderOutput; import org.apache.batik.transcoder.image.ImageTranscoder; import org.apache.fop.svg.AbstractFOPTranscoder; import org.w3c.dom.Document; /** * This class enables to transcode an input to a PostScript document. * *

Two transcoding hints (KEY_WIDTH and * KEY_HEIGHT) can be used to respectively specify the image * width and the image height. If only one of these keys is specified, * the transcoder preserves the aspect ratio of the original image. * *

The KEY_BACKGROUND_COLOR defines the background color * to use for opaque image formats, or the background color that may * be used for image formats that support alpha channel. * *

The KEY_AOI represents the area of interest to paint * in device space. * *

Three additional transcoding hints that act on the SVG * processor can be specified: * *

KEY_LANGUAGE to set the default language to use (may be * used by a <switch> SVG element for example), * KEY_USER_STYLESHEET_URI to fix the URI of a user * stylesheet, and KEY_PIXEL_TO_MM to specify the pixel to * millimeter conversion factor. * * @author Keiron Liddle * @author Jeremias Maerki * @version $Id$ */ public abstract class AbstractPSTranscoder extends AbstractFOPTranscoder { private Configuration cfg = null; protected AbstractPSDocumentGraphics2D graphics = null; /** * Constructs a new AbstractPSTranscoder. */ public AbstractPSTranscoder() { super(); } protected abstract AbstractPSDocumentGraphics2D createDocumentGraphics2D(); protected BridgeContext createBridgeContext() { /*boolean stroke = true; if (hints.containsKey(KEY_STROKE_TEXT)) { stroke = ((Boolean)hints.get(KEY_STROKE_TEXT)).booleanValue(); }*/ BridgeContext ctx = new BridgeContext(userAgent); PSTextPainter textPainter = new PSTextPainter(graphics.getDocument()); ctx.setTextPainter(textPainter); ctx.putBridge(new PSTextElementBridge(textPainter)); //ctx.putBridge(new PSImageElementBridge()); return ctx; } /** * Transcodes the specified Document as an image in the specified output. * * @param document the document to transcode * @param uri the uri of the document or null if any * @param output the ouput where to transcode * @exception TranscoderException if an error occured while transcoding */ protected void transcode(Document document, String uri, TranscoderOutput output) throws TranscoderException { graphics = createDocumentGraphics2D(); ContainerUtil.enableLogging(graphics, getLogger()); try { if (this.cfg != null) { ContainerUtil.configure(graphics, this.cfg); } ContainerUtil.initialize(graphics); } catch (Exception e) { throw new TranscoderException( "Error while setting up PDFDocumentGraphics2D", e); } super.transcode(document, uri, output); // prepare the image to be painted int w = (int)(width + 0.5); int h = (int)(height + 0.5); try { graphics.setupDocument(output.getOutputStream(), w, h); graphics.setSVGDimension(width, height); if (hints.containsKey(ImageTranscoder.KEY_BACKGROUND_COLOR)) { graphics.setBackgroundColor ((Color)hints.get(ImageTranscoder.KEY_BACKGROUND_COLOR)); } graphics.setGraphicContext (new org.apache.batik.ext.awt.g2d.GraphicContext()); graphics.setTransform(curTxf); this.root.paint(graphics); graphics.finish(); } catch (IOException ex) { throw new TranscoderException(ex); } } }