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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.io.IOException;
- import java.io.LineNumberReader;
- import java.util.Collection;
- import java.util.Iterator;
- import java.util.List;
-
- import org.apache.xmlgraphics.ps.PSGenerator;
-
- import org.apache.fop.apps.FOUserAgent;
- import org.apache.fop.render.ps.extensions.PSCommentAfter;
- import org.apache.fop.render.ps.extensions.PSCommentBefore;
- import org.apache.fop.render.ps.extensions.PSExtensionAttachment;
- import org.apache.fop.render.ps.extensions.PSSetupCode;
-
- import static org.apache.fop.render.ps.PSRendererOption.ACROBAT_DOWNSAMPLE;
- import static org.apache.fop.render.ps.PSRendererOption.AUTO_ROTATE_LANDSCAPE;
- import static org.apache.fop.render.ps.PSRendererOption.LANGUAGE_LEVEL;
- import static org.apache.fop.render.ps.PSRendererOption.OPTIMIZE_RESOURCES;
-
- /**
- * Utility class which enables all sorts of features that are not directly connected to the
- * normal rendering process.
- */
- public class PSRenderingUtil {
-
- private FOUserAgent userAgent;
-
- /** Whether or not the safe set page device macro will be used or not */
- private boolean safeSetPageDevice;
-
- /**
- * Whether or not PostScript Document Structuring Conventions (DSC) compliant output are
- * enforced.
- */
- private boolean dscCompliant = true;
-
- private boolean autoRotateLandscape;
- private int languageLevel = PSGenerator.DEFAULT_LANGUAGE_LEVEL;
- private boolean acrobatDownsample;
-
- /** Determines whether the PS file is generated in two passes to minimize file size */
- private boolean optimizeResources;
-
- /**
- * Determines whether the generated PostScript code is optimized for minimum file size
- * of best quality.
- */
- private PSRenderingMode renderingMode = PSRenderingMode.QUALITY;
-
- PSRenderingUtil(FOUserAgent userAgent) {
- this.userAgent = userAgent;
- //PSRendererConfig confi = userAgent.getRendererConfig(rendererConfiguration, configCreator)
- initialize();
- }
-
- private void initialize() {
- Object obj;
- obj = userAgent.getRendererOptions().get(AUTO_ROTATE_LANDSCAPE.getName());
- if (obj != null) {
- setAutoRotateLandscape(booleanValueOf(obj));
- }
- obj = userAgent.getRendererOptions().get(LANGUAGE_LEVEL.getName());
- if (obj != null) {
- setLanguageLevel(intValueOf(obj));
- }
- obj = userAgent.getRendererOptions().get(OPTIMIZE_RESOURCES.getName());
- if (obj != null) {
- setOptimizeResources(booleanValueOf(obj));
- }
- obj = userAgent.getRendererOptions().get(ACROBAT_DOWNSAMPLE.getName());
- if (obj != null) {
- setAcrobatDownsample(booleanValueOf(obj));
- }
- }
-
- private boolean booleanValueOf(Object obj) {
- if (obj instanceof Boolean) {
- return (Boolean) obj;
- } else if (obj instanceof String) {
- return Boolean.valueOf((String) obj);
- } else {
- throw new IllegalArgumentException("Boolean or \"true\" or \"false\" expected.");
- }
- }
-
- private int intValueOf(Object obj) {
- if (obj instanceof Integer) {
- return (Integer) obj;
- } else if (obj instanceof String) {
- return Integer.parseInt((String)obj);
- } else {
- throw new IllegalArgumentException("Integer or String with a number expected.");
- }
- }
-
- /**
- * Formats and writes a List of PSSetupCode instances to the output stream.
- * @param gen the PS generator
- * @param setupCodeList a List of PSSetupCode instances
- * @param type the type of code section
- * @throws IOException if an I/O error occurs.
- */
- public static void writeSetupCodeList(PSGenerator gen, List setupCodeList, String type)
- throws IOException {
- if (setupCodeList != null) {
- Iterator i = setupCodeList.iterator();
- while (i.hasNext()) {
- PSSetupCode setupCode = (PSSetupCode)i.next();
- gen.commentln("%FOPBegin" + type + ": ("
- + (setupCode.getName() != null ? setupCode.getName() : "")
- + ")");
- LineNumberReader reader = new LineNumberReader(
- new java.io.StringReader(setupCode.getContent()));
- String line;
- while ((line = reader.readLine()) != null) {
- line = line.trim();
- if (line.length() > 0) {
- gen.writeln(line.trim());
- }
- }
- gen.commentln("%FOPEnd" + type);
- i.remove();
- }
- }
- }
-
- /**
- * Formats and writes a Collection of PSExtensionAttachment instances to
- * the output stream. The instances are removed from the collection when they
- * have been written.
- *
- * @param gen the PS generator
- * @param attachmentCollection
- * a Collection of PSExtensionAttachment instances
- * @throws IOException if an I/O error occurs.
- */
- public static void writeEnclosedExtensionAttachments(PSGenerator gen,
- Collection attachmentCollection) throws IOException {
- Iterator iter = attachmentCollection.iterator();
- while (iter.hasNext()) {
- PSExtensionAttachment attachment = (PSExtensionAttachment)iter.next();
- if (attachment != null) {
- writeEnclosedExtensionAttachment(gen, attachment);
- }
- iter.remove();
- }
- }
-
- /**
- * Formats and writes a PSExtensionAttachment to the output stream.
- *
- * @param gen the PS generator
- * @param attachment an PSExtensionAttachment instance
- * @throws IOException if an I/O error occurs.
- */
- public static void writeEnclosedExtensionAttachment(PSGenerator gen,
- PSExtensionAttachment attachment) throws IOException {
- if (attachment instanceof PSCommentBefore) {
- gen.commentln("%" + attachment.getContent());
- } else if (attachment instanceof PSCommentAfter) {
- gen.commentln("%" + attachment.getContent());
- } else {
- String info = "";
- if (attachment instanceof PSSetupCode) {
- PSSetupCode setupCodeAttach = (PSSetupCode)attachment;
- String name = setupCodeAttach.getName();
- if (name != null) {
- info += ": (" + name + ")";
- }
- }
- String type = attachment.getType();
- gen.commentln("%FOPBegin" + type + info);
- LineNumberReader reader = new LineNumberReader(
- new java.io.StringReader(attachment.getContent()));
- String line;
- while ((line = reader.readLine()) != null) {
- line = line.trim();
- if (line.length() > 0) {
- gen.writeln(line);
- }
- }
- gen.commentln("%FOPEnd" + type);
- }
- }
-
- /**
- * Sets whether or not PostScript Document Structuring Conventions (DSC) compliance are
- * enforced.
- * <p>
- * It can cause problems (unwanted PostScript subsystem initgraphics/erasepage calls)
- * on some printers when the pagedevice is set. If this causes problems on a
- * particular implementation then use this setting with a 'false' value to try and
- * minimize the number of setpagedevice calls in the PostScript document output.
- * <p>
- * Set this value to false if you experience unwanted blank pages in your
- * PostScript output.
- * @param value boolean value (default is true)
- */
- public void setSafeSetPageDevice(boolean value) {
- this.safeSetPageDevice = value;
- }
-
- /**
- * Indicates whether the "safe setpagedevice" mode is active.
- * See {@link #setSafeSetPageDevice(boolean)} for more information.
- * @return true if active
- */
- public boolean isSafeSetPageDevice() {
- return this.safeSetPageDevice;
- }
-
- /**
- * Sets whether or not the safe set page device macro should be used
- * (as opposed to directly invoking setpagedevice) when setting the
- * PostScript page device.
- * <p>
- * This option is a useful option when you want to guard against the possibility
- * of invalid/unsupported PostScript key/values being placed in the page device.
- * <p>
- * @param value setting to false and the renderer will make a
- * standard "setpagedevice" call, setting to true will make a safe set page
- * device macro call (default is false).
- */
- public void setDSCComplianceEnabled(boolean value) {
- this.dscCompliant = value;
- }
-
- /** @return true if DSC complicance is enabled */
- public boolean isDSCComplianceEnabled() {
- return this.dscCompliant;
- }
-
- /**
- * Controls whether landscape pages should be rotated.
- * @param value true to enable the rotation
- */
- public void setAutoRotateLandscape(boolean value) {
- this.autoRotateLandscape = value;
- }
-
- /**
- * Indicates whether landscape pages are rotated.
- * @return true if landscape pages are to be rotated
- */
- public boolean isAutoRotateLandscape() {
- return autoRotateLandscape;
- }
-
- /**
- * Sets the PostScript language level.
- * @param level the PostScript language level (Only 2 and 3 are currently supported)
- */
- public void setLanguageLevel(int level) {
- if (level == 2 || level == 3) {
- this.languageLevel = level;
- } else {
- throw new IllegalArgumentException("Only language levels 2 or 3 are allowed/supported");
- }
- }
-
- /**
- * Indicates the selected PostScript language level.
- * @return the PostScript language level
- */
- public int getLanguageLevel() {
- return languageLevel;
- }
-
- public void setAcrobatDownsample(boolean b) {
- acrobatDownsample = b;
- }
-
- public boolean isAcrobatDownsample() {
- return acrobatDownsample;
- }
-
- /**
- * Controls whether PostScript resources are optimized in a second pass over the document.
- * Enable this to obtain smaller PostScript files.
- * @param value true to enable resource optimization
- */
- public void setOptimizeResources(boolean value) {
- this.optimizeResources = value;
- }
-
- /**
- * Indicates whether PostScript resources are optimized in a second pass over the document.
- * @return true if resource optimization is enabled
- */
- public boolean isOptimizeResources() {
- return optimizeResources;
- }
-
- /**
- * Sets the rendering mode.
- * @param renderingMode the rendering mode
- */
- public void setRenderingMode(PSRenderingMode renderingMode) {
- this.renderingMode = renderingMode;
- }
-
- /**
- * Returns the rendering mode.
- * @return the rendering mode
- */
- public PSRenderingMode getRenderingMode() {
- return this.renderingMode;
- }
- }
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