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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.svg;
-
- import java.awt.Color;
- import java.io.BufferedOutputStream;
- import java.io.IOException;
- import java.io.OutputStream;
-
- import org.w3c.dom.Document;
- import org.w3c.dom.svg.SVGLength;
-
- import org.apache.batik.bridge.BridgeContext;
- import org.apache.batik.bridge.UnitProcessor;
- import org.apache.batik.ext.awt.RenderingHintsKeyExt;
- import org.apache.batik.transcoder.TranscoderException;
- import org.apache.batik.transcoder.TranscoderOutput;
- import org.apache.batik.transcoder.image.ImageTranscoder;
-
- import org.apache.fop.Version;
- import org.apache.fop.configuration.Configuration;
- import org.apache.fop.fonts.FontInfo;
- import org.apache.fop.svg.font.FOPFontFamilyResolverImpl;
-
- /**
- * <p>This class enables to transcode an input to a PDF document.</p>
- *
- * <p>Two transcoding hints (<code>KEY_WIDTH</code> and
- * <code>KEY_HEIGHT</code>) 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.
- *
- * <p>The <code>KEY_BACKGROUND_COLOR</code> 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.
- *
- * <p>The <code>KEY_AOI</code> represents the area of interest to paint
- * in device space.
- *
- * <p>Three additional transcoding hints that act on the SVG
- * processor can be specified:
- *
- * <p><code>KEY_LANGUAGE</code> to set the default language to use (may be
- * used by a <switch> SVG element for example),
- * <code>KEY_USER_STYLESHEET_URI</code> to fix the URI of a user
- * stylesheet, and <code>KEY_PIXEL_TO_MM</code> to specify the pixel to
- * millimeter conversion factor.
- *
- * <p><code>KEY_AUTO_FONTS</code> to disable the auto-detection of fonts installed in the system.
- * The PDF Transcoder cannot use AWT's font subsystem and that's why the fonts have to be
- * configured differently. By default, font auto-detection is enabled to match the behaviour
- * of the other transcoders, but this may be associated with a price in the form of a small
- * performance penalty. If font auto-detection is not desired, it can be disable using this key.
- *
- * <p>This work was authored by Keiron Liddle (keiron@aftexsw.com).</p>
- */
- public class PDFTranscoder extends AbstractFOPTranscoder {
-
- /** Graphics2D instance that is used to paint to */
- protected PDFDocumentGraphics2D graphics;
-
- /**
- * Constructs a new {@link PDFTranscoder}.
- */
- public PDFTranscoder() {
- super();
- this.handler = new FOPErrorHandler();
- }
-
- /**
- * {@inheritDoc}
- */
- protected FOPTranscoderUserAgent createUserAgent() {
- return new AbstractFOPTranscoder.FOPTranscoderUserAgent() {
- // The PDF stuff wants everything at 72dpi
- public float getPixelUnitToMillimeter() {
- return super.getPixelUnitToMillimeter();
- //return 25.4f / 72; //72dpi = 0.352778f;
- }
- };
- }
-
- /**
- * 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 = new PDFDocumentGraphics2D(isTextStroked());
- graphics.getPDFDocument().getInfo().setProducer("Apache FOP Version "
- + Version.getVersion()
- + ": PDF Transcoder for Batik");
- if (hints.containsKey(KEY_DEVICE_RESOLUTION)) {
- graphics.setDeviceDPI(getDeviceResolution());
- }
-
- setupImageInfrastructure(uri);
-
- try {
- Configuration effCfg = getEffectiveConfiguration();
-
- if (effCfg != null) {
- PDFDocumentGraphics2DConfigurator configurator
- = new PDFDocumentGraphics2DConfigurator();
- boolean useComplexScriptFeatures = false; //TODO - FIX ME
- configurator.configure(graphics, effCfg, useComplexScriptFeatures);
- } else {
- graphics.setupDefaultFontInfo();
- }
- ((FOPTranscoderUserAgent) userAgent).setFontFamilyResolver(
- new FOPFontFamilyResolverImpl(graphics.getFontInfo()));
- } catch (Exception e) {
- throw new TranscoderException(
- "Error while setting up PDFDocumentGraphics2D", e);
- }
-
- super.transcode(document, uri, output);
-
- if (getLogger().isTraceEnabled()) {
- getLogger().trace("document size: " + width + " x " + height);
- }
-
- // prepare the image to be painted
- UnitProcessor.Context uctx = UnitProcessor.createContext(ctx,
- document.getDocumentElement());
- float widthInPt = UnitProcessor.userSpaceToSVG(width, SVGLength.SVG_LENGTHTYPE_PT,
- UnitProcessor.HORIZONTAL_LENGTH, uctx);
- int w = (int)(widthInPt + 0.5);
- float heightInPt = UnitProcessor.userSpaceToSVG(height, SVGLength.SVG_LENGTHTYPE_PT,
- UnitProcessor.HORIZONTAL_LENGTH, uctx);
- int h = (int)(heightInPt + 0.5);
- if (getLogger().isTraceEnabled()) {
- getLogger().trace("document size: " + w + "pt x " + h + "pt");
- }
-
- // prepare the image to be painted
- //int w = (int)(width + 0.5);
- //int h = (int)(height + 0.5);
-
- try {
- OutputStream out = output.getOutputStream();
- if (!(out instanceof BufferedOutputStream)) {
- out = new BufferedOutputStream(out);
- }
- graphics.setupDocument(out, 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.xmlgraphics.java2d.GraphicContext());
- graphics.preparePainting();
-
- graphics.transform(curTxf);
- graphics.setRenderingHint(
- RenderingHintsKeyExt.KEY_TRANSCODING,
- RenderingHintsKeyExt.VALUE_TRANSCODING_VECTOR);
-
- this.root.paint(graphics);
-
- graphics.finish();
- } catch (IOException ex) {
- throw new TranscoderException(ex);
- }
- }
-
- /** {@inheritDoc} */
- protected BridgeContext createBridgeContext() {
- //For compatibility with Batik 1.6
- return createBridgeContext("1.x");
- }
-
- /** {@inheritDoc} */
- public BridgeContext createBridgeContext(String version) {
- FontInfo fontInfo = graphics.getFontInfo();
- if (isTextStroked()) {
- fontInfo = null;
- }
- BridgeContext ctx = new PDFBridgeContext(userAgent, fontInfo,
- getImageManager(), getImageSessionContext());
- return ctx;
- }
-
- }
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