/*
* 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: ImageHandlingTestCase.java 746664 2009-02-22 12:40:44Z jeremias $ */
package org.apache.fop.render.ps;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import org.apache.commons.io.IOUtils;
import org.apache.xmlgraphics.ps.DSCConstants;
import org.apache.xmlgraphics.ps.PSResource;
import org.apache.xmlgraphics.ps.dsc.DSCException;
import org.apache.xmlgraphics.ps.dsc.DSCParser;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentPage;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentPages;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentTitle;
import org.apache.xmlgraphics.ps.dsc.events.DSCEvent;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.render.intermediate.IFContext;
/**
* Tests the image handling in PostScript output.
*/
public class ImageHandlingTestCase extends AbstractPostScriptTestCase {
/**
* Tests JPEG handling with the {@link PSRenderer}.
* @throws Exception if an error occurs
*/
public void testJPEGImageWithRendererLevel3() throws Exception {
innerTestJPEGImageWithRenderer(3);
}
/**
* Tests JPEG handling with the {@link PSRenderer}.
* @throws Exception if an error occurs
*/
public void testJPEGImageWithRendererLevel2() throws Exception {
innerTestJPEGImageWithRenderer(2);
}
/**
* Tests JPEG handling with the {@link PSDocumentHandler}.
* @throws Exception if an error occurs
*/
public void testJPEGImageWithIFLevel3() throws Exception {
innerTestJPEGImageWithIF(3);
}
/**
* Tests JPEG handling with the {@link PSDocumentHandler}.
* @throws Exception if an error occurs
*/
public void testJPEGImageWithIFLevel2() throws Exception {
innerTestJPEGImageWithIF(2);
}
private void innerTestJPEGImageWithRenderer(int level) throws Exception {
FOUserAgent ua = fopFactory.newFOUserAgent();
PSRenderer renderer = new PSRenderer();
renderer.setUserAgent(ua);
PSRenderingUtil psUtil = renderer.getPSUtil();
psUtil.setLanguageLevel(level);
psUtil.setOptimizeResources(true);
ua.setRendererOverride(renderer);
// Prepare output file
File outputFile = renderFile(ua, "ps-jpeg-image.fo", "-rend-l" + psUtil.getLanguageLevel());
verifyPostScriptFile(outputFile, psUtil.getLanguageLevel());
}
private void innerTestJPEGImageWithIF(int level) throws Exception {
FOUserAgent ua = fopFactory.newFOUserAgent();
PSDocumentHandler handler = new PSDocumentHandler();
handler.setContext(new IFContext(ua));
PSRenderingUtil psUtil = handler.getPSUtil();
psUtil.setLanguageLevel(level);
psUtil.setOptimizeResources(true);
ua.setDocumentHandlerOverride(handler);
// Prepare output file
File outputFile = renderFile(ua, "ps-jpeg-image.fo", "-if-l" + psUtil.getLanguageLevel());
verifyPostScriptFile(outputFile, psUtil.getLanguageLevel());
}
private void verifyPostScriptFile(File psFile, int level)
throws IOException, DSCException {
InputStream in = new java.io.FileInputStream(psFile);
in = new java.io.BufferedInputStream(in);
try {
DSCParser parser = new DSCParser(in);
DSCCommentPages pages = (DSCCommentPages)gotoDSCComment(parser, DSCConstants.PAGES);
assertEquals(1, pages.getPageCount());
//Skip procsets and encoding
gotoDSCComment(parser, DSCConstants.BEGIN_RESOURCE);
gotoDSCComment(parser, DSCConstants.BEGIN_RESOURCE);
gotoDSCComment(parser, DSCConstants.BEGIN_RESOURCE);
PSResource form2 = new PSResource(PSResource.TYPE_FORM, "FOPForm:2");
checkResourceComment(parser, DSCConstants.BEGIN_RESOURCE, form2);
DSCCommentTitle title = (DSCCommentTitle)parser.nextEvent().asDSCComment();
assertEquals("image/jpeg test/resources/images/bgimg300dpi.jpg", title.getTitle());
String resourceContent = getResourceContent(parser);
if (level == 3) {
assertContains(resourceContent, "/FOPForm:2");
assertContains(resourceContent, "/DCTDecode filter");
assertContains(resourceContent, "/ReusableStreamDecode filter");
} else {
assertContains(resourceContent, "/FOPForm:2");
assertContains(resourceContent, "/DCTDecode filter");
assertAbsent(resourceContent, "/ReusableStreamDecode filter");
}
//---=== Page 1 ===---
DSCCommentPage page = (DSCCommentPage)gotoDSCComment(parser, DSCConstants.PAGE);
assertEquals(1, page.getPagePosition());
PSResource form1 = new PSResource(PSResource.TYPE_FORM, "FOPForm:1");
checkResourceComment(parser, DSCConstants.BEGIN_RESOURCE, form1);
title = (DSCCommentTitle)parser.nextEvent().asDSCComment();
assertEquals("image/jpeg test/resources/images/bgimg72dpi.jpg", title.getTitle());
resourceContent = getResourceContent(parser);
if (level == 3) {
assertContains(resourceContent, "/FOPForm:1");
assertContains(resourceContent, "/DCTDecode filter");
assertContains(resourceContent, "/ReusableStreamDecode filter");
} else {
assertContains(resourceContent, "/FOPForm:1");
assertContains(resourceContent, "/DCTDecode filter");
assertAbsent(resourceContent, "/ReusableStreamDecode filter");
}
} finally {
IOUtils.closeQuietly(in);
}
}
private void assertMatches(String text, String regex) {
assertTrue("Text didn't match '" + regex + "'", text.matches(regex));
}
private void assertContains(String text, String searchString) {
assertTrue("Text doesn't contain '" + searchString + "'", text.indexOf(searchString) >= 0);
}
private void assertAbsent(String text, String searchString) {
assertTrue("Text contains '" + searchString + "'", text.indexOf(searchString) < 0);
}
private String getResourceContent(DSCParser parser) throws IOException, DSCException {
StringBuffer sb = new StringBuffer();
while (parser.hasNext()) {
DSCEvent event = parser.nextEvent();
if (event.isLine()) {
sb.append(event.asLine().getLine()).append('\n');
} else if (event.isDSCComment()) {
if (DSCConstants.END_RESOURCE.equals(event.asDSCComment().getName())) {
break;
}
}
}
return sb.toString();
}
}