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authorGlenn Adams <gadams@apache.org>2016-03-03 09:49:26 +0000
committerGlenn Adams <gadams@apache.org>2016-03-03 09:49:26 +0000
commitc8cde713f54ca731f4a7f3bfaef8af9e8a1b9262 (patch)
treef553e13b28bd90fd2067bf390509f9290260d330 /src/java/org/apache/fop/render/ps/AbstractPSTranscoder.java
parent82804d6ffcb68841cd7adf9740469f3a79c372c8 (diff)
downloadxmlgraphics-fop-c8cde713f54ca731f4a7f3bfaef8af9e8a1b9262.tar.gz
xmlgraphics-fop-c8cde713f54ca731f4a7f3bfaef8af9e8a1b9262.zip
Transition source to standard maven hierarchy (initial).
git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/branches/maven@1733433 13f79535-47bb-0310-9956-ffa450edef68
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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.ps;
-
-
-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.transcoder.TranscoderException;
-import org.apache.batik.transcoder.TranscoderOutput;
-import org.apache.batik.transcoder.image.ImageTranscoder;
-
-import org.apache.xmlgraphics.java2d.ps.AbstractPSDocumentGraphics2D;
-
-import org.apache.fop.apps.FOPException;
-import org.apache.fop.fonts.FontInfo;
-import org.apache.fop.svg.AbstractFOPTranscoder;
-import org.apache.fop.svg.PDFDocumentGraphics2DConfigurator;
-import org.apache.fop.svg.font.FOPFontFamilyResolverImpl;
-
-/**
- * <p>This class enables to transcode an input to a PostScript 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 &lt;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>This work was authored by Keiron Liddle (keiron@aftexsw.com).</p>
- */
-public abstract class AbstractPSTranscoder extends AbstractFOPTranscoder {
-
- /** the root Graphics2D instance for generating PostScript */
- protected AbstractPSDocumentGraphics2D graphics;
-
- private FontInfo fontInfo;
-
- /**
- * Constructs a new {@link AbstractPSTranscoder}.
- */
- public AbstractPSTranscoder() {
- super();
- }
-
- /**
- * Creates the root Graphics2D instance for generating PostScript.
- * @return the root Graphics2D
- */
- protected abstract AbstractPSDocumentGraphics2D createDocumentGraphics2D();
-
- /** {@inheritDoc} */
- protected boolean getAutoFontsDefault() {
- //Currently set to false because auto-fonts requires a lot of memory in the PostScript
- //case: All fonts (even the unsupported TTF fonts) need to be loaded and TrueType loading
- //is currently very memory-intensive. At default JVM memory settings, this would result
- //in OutOfMemoryErrors otherwise.
- return false;
- }
-
- /**
- * 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();
- if (!isTextStroked()) {
- try {
- boolean useComplexScriptFeatures = false; //TODO - FIX ME
- this.fontInfo = PDFDocumentGraphics2DConfigurator.createFontInfo(
- getEffectiveConfiguration(), useComplexScriptFeatures);
- graphics.setCustomTextHandler(new NativeTextHandler(graphics, fontInfo));
- ((FOPTranscoderUserAgent) userAgent).setFontFamilyResolver(
- new FOPFontFamilyResolverImpl(fontInfo));
- } catch (FOPException fe) {
- throw new TranscoderException(fe);
- }
- }
-
- super.transcode(document, uri, output);
-
- 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);
- getLogger().trace("document size: " + w + "pt x " + h + "pt");
-
- try {
- OutputStream out = output.getOutputStream();
- if (!(out instanceof BufferedOutputStream)) {
- out = new BufferedOutputStream(out);
- }
- graphics.setupDocument(out, w, h);
- graphics.setViewportDimension(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.setTransform(curTxf);
-
- 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) {
- BridgeContext ctx = new PSBridgeContext(userAgent, (isTextStroked() ? null : fontInfo),
- getImageManager(), getImageSessionContext());
- return ctx;
- }
-
-}