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- /*
- * Copyright 1999-2005 The Apache Software Foundation.
- *
- * Licensed 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.apps;
-
- // Java
- import java.io.OutputStream;
-
- // XML
- import org.xml.sax.helpers.DefaultHandler;
-
- // FOP
- import org.apache.fop.fo.Constants;
- import org.apache.fop.fo.FOTreeBuilder;
-
- /**
- * Primary class that activates the FOP process for embedded usage.
- * <P>
- * JAXP is the standard method of embedding FOP in Java programs.
- * Please check our <a href="http://xmlgraphics.apache.org/fop/embedding.html">embedding page</a>
- * for samples (these are also available within the distribution in
- * FOP_DIR\examples\embedding)
- * <P>
- * Methods within FOUserAgent are available to customize portions of the
- * process. For example, a specific Renderer object can be specified,
- * also ElementMappings which determine elements in the FO that can be
- * processed) can be added.
- */
- public class Fop implements Constants {
-
- // desired output type: RENDER_PDF, RENDER_PS, etc.
- private int renderType = NOT_SET;
-
- // output stream to send results to
- private OutputStream stream = null;
-
- // FOUserAgent object to set processing options
- private FOUserAgent foUserAgent = null;
-
- // FOTreeBuilder object to maintain reference for access to results
- private FOTreeBuilder foTreeBuilder = null;
-
- /**
- * Constructor for use with already-created FOUserAgents
- * @param renderType the type of renderer to use. Must be one of
- * <ul>
- * <li>Fop.RENDER_PDF</li>
- * <li>Fop.RENDER_AWT</li>
- * <li>Fop.RENDER_PRINT</li>
- * <li>Fop.RENDER_MIF</li>
- * <li>Fop.RENDER_XML</li>
- * <li>Fop.RENDER_PCL</li>
- * <li>Fop.RENDER_PS</li>
- * <li>Fop.RENDER_TXT</li>
- * <li>Fop.RENDER_SVG</li>
- * <li>Fop.RENDER_RTF</li>
- * <li>Fop.RENDER_TIFF</li>
- * <li>Fop.RENDER_PNG</li>
- * </ul>
- * @param ua FOUserAgent object
- * @throws IllegalArgumentException if an unsupported renderer type was requested.
- */
- public Fop(int renderType, FOUserAgent ua) {
- if (renderType < Constants.RENDER_MIN_CONST
- || renderType > Constants.RENDER_MAX_CONST) {
- throw new IllegalArgumentException(
- "Invalid render type #" + renderType);
- }
-
- this.renderType = renderType;
-
- foUserAgent = ua;
- if (foUserAgent == null) {
- foUserAgent = new FOUserAgent();
- }
- }
-
- /**
- * Constructor that creates a default FOUserAgent
- * @see org.apache.fop.apps.Fop#Fop(int, FOUserAgent)
- */
- public Fop(int renderType) {
- this(renderType, new FOUserAgent());
- }
-
- /**
- * Get the FOUserAgent instance for this process
- * @return the user agent
- */
- public FOUserAgent getUserAgent() {
- return foUserAgent;
- }
-
- /**
- * Set the OutputStream to use to output the result of the Render
- * (if applicable)
- * @param stream the stream to output the result of rendering to
- */
- public void setOutputStream(OutputStream stream) {
- this.stream = stream;
- }
-
- /**
- * Returns a DefaultHandler object used to generate the document.
- * Note this object implements the ContentHandler interface.
- * For processing with a Transformer object, this DefaultHandler object
- * can be used in the SAXResult constructor.
- * Alternatively, for processing with a SAXParser, this object can be
- * used as the DefaultHandler argument to its parse() methods.
- *
- * @return a SAX DefaultHandler for handling the SAX events.
- * @throws FOPException if setting up the DefaultHandler fails
- */
- public DefaultHandler getDefaultHandler() throws FOPException {
- if (foTreeBuilder == null) {
- this.foTreeBuilder = new FOTreeBuilder(renderType, foUserAgent, stream);
- }
- return this.foTreeBuilder;
- }
-
- /**
- * Returns the results of the rendering process. Information includes
- * the total number of pages generated and the number of pages per
- * page-sequence. Call this method only after the rendering process is
- * finished. Note that the results are only available for output formats
- * which make use of FOP's layout engine (PDF, PS, etc.).
- * @return the results of the rendering process, or null for flow-oriented
- * output formats like RTF and MIF.
- */
- public FormattingResults getResults() {
- if (foTreeBuilder == null) {
- throw new IllegalStateException(
- "Results are only available after calling getDefaultHandler().");
- } else {
- return foTreeBuilder.getResults();
- }
- }
-
- /**
- * Get the version of FOP
- * @return the version string
- */
- public static String getVersion() {
- return org.apache.fop.Version.getVersion();
- }
- }
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