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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.pdf;
-
- import java.util.HashMap;
- import java.util.HashSet;
- import java.util.Iterator;
- import java.util.Map;
- import java.util.Set;
-
- import org.apache.fop.fonts.FontDescriptor;
- import org.apache.fop.fonts.FontInfo;
- import org.apache.fop.fonts.Typeface;
- import org.apache.fop.util.ColorProfileUtil;
-
- /**
- * class representing a /Resources object.
- *
- * /Resources object contain a list of references to the fonts for the
- * document
- */
- public class PDFResources extends PDFObject {
-
- /**
- * /Font objects keyed by their internal name
- */
- protected Map fonts = new HashMap();
-
- /**
- * Set of XObjects
- */
- protected Set xObjects = new HashSet();
-
- /**
- * Set of patterns
- */
- protected Set patterns = new HashSet();
-
- /**
- * Set of shadings
- */
- protected Set shadings = new HashSet();
-
- /**
- * Set of ExtGStates
- */
- protected Set gstates = new HashSet();
-
- /** Map of color spaces (key: color space name) */
- protected Map colorSpaces = new HashMap();
-
- /** Map of ICC color spaces (key: ICC profile description) */
- protected Map iccColorSpaces = new HashMap();
-
- /**
- * create a /Resources object.
- *
- * @param objnum the object's number
- */
- public PDFResources(int objnum) {
- /* generic creation of object */
- super();
- setObjectNumber(objnum);
- }
-
- /**
- * add font object to resources list.
- *
- * @param font the PDFFont to add
- */
- public void addFont(PDFFont font) {
- this.fonts.put(font.getName(), font);
- }
-
- /**
- * Add the fonts in the font info to this PDF document's Font Resources.
- *
- * @param doc PDF document to add fonts to
- * @param fontInfo font info object to get font information from
- */
- public void addFonts(PDFDocument doc, FontInfo fontInfo) {
- Map usedFonts = fontInfo.getUsedFonts();
- Iterator e = usedFonts.keySet().iterator();
- while (e.hasNext()) {
- String f = (String)e.next();
- Typeface font = (Typeface)usedFonts.get(f);
-
- //Check if the font actually had any mapping operations. If not, it is an indication
- //that it has never actually been used and therefore doesn't have to be embedded.
- if (font.hadMappingOperations()) {
- FontDescriptor desc = null;
- if (font instanceof FontDescriptor) {
- desc = (FontDescriptor)font;
- }
- addFont(doc.getFactory().makeFont(
- f, font.getEmbedFontName(), font.getEncodingName(), font, desc));
- }
- }
- }
-
- /**
- * Add a PDFGState to the resources.
- *
- * @param gs the PDFGState to add
- */
- public void addGState(PDFGState gs) {
- this.gstates.add(gs);
- }
-
- /**
- * Add a Shading to the resources.
- *
- * @param theShading the shading to add
- */
- public void addShading(PDFShading theShading) {
- this.shadings.add(theShading);
- }
-
- /**
- * Add the pattern to the resources.
- *
- * @param thePattern the pattern to add
- */
- public void addPattern(PDFPattern thePattern) {
- this.patterns.add(thePattern);
- }
-
- /**
- * Add an XObject to the resources.
- *
- * @param xObject the XObject to add
- */
- public void addXObject(PDFXObject xObject) {
- this.xObjects.add(xObject);
- }
-
- /**
- * Add a ColorSpace dictionary to the resources.
- * @param colorSpace the color space
- */
- public void addColorSpace(PDFICCBasedColorSpace colorSpace) {
- this.colorSpaces.put(colorSpace.getName(), colorSpace);
- String desc = ColorProfileUtil.getICCProfileDescription(
- colorSpace.getICCStream().getICCProfile());
- this.iccColorSpaces.put(desc, colorSpace);
- }
-
- /**
- * Returns a ICCBased color space by profile name.
- * @param desc the name of the color space
- * @return the requested color space or null if it wasn't found
- */
- public PDFICCBasedColorSpace getICCColorSpaceByProfileName(String desc) {
- PDFICCBasedColorSpace cs = (PDFICCBasedColorSpace)this.iccColorSpaces.get(desc);
- return cs;
- }
-
- /**
- * Returns a color space by name.
- * @param name the name of the color space
- * @return the requested color space or null if it wasn't found
- */
- public PDFICCBasedColorSpace getColorSpace(String name) {
- PDFICCBasedColorSpace cs = (PDFICCBasedColorSpace)this.colorSpaces.get(name);
- return cs;
- }
-
- /**
- * represent the object in PDF
- * This adds the references to all the objects in the current
- * resource context.
- *
- * @return the PDF
- * {@inheritDoc}
- */
- public String toPDFString() {
- StringBuffer p = new StringBuffer(128);
- p.append(getObjectID() + "<<\n");
- if (!this.fonts.isEmpty()) {
- p.append("/Font <<\n");
-
- /* construct PDF dictionary of font object references */
- Iterator fontIterator = this.fonts.keySet().iterator();
- while (fontIterator.hasNext()) {
- String fontName = (String)fontIterator.next();
- p.append(" /" + fontName + " "
- + ((PDFFont)this.fonts.get(fontName)).referencePDF()
- + "\n");
- }
-
- p.append(">>\n");
- }
-
- PDFShading currentShading = null;
- if (!this.shadings.isEmpty()) {
- p.append("/Shading <<\n");
-
- for (Iterator iter = shadings.iterator(); iter.hasNext();) {
- currentShading = (PDFShading)iter.next();
- p.append(" /" + currentShading.getName() + " "
- + currentShading.referencePDF() + " "); // \n ??????
- }
-
- p.append(">>\n");
- }
- // "free" the memory. Sorta.
- currentShading = null;
-
- PDFPattern currentPattern = null;
- if (!this.patterns.isEmpty()) {
- p.append("/Pattern <<\n");
-
- for (Iterator iter = patterns.iterator(); iter.hasNext();) {
- currentPattern = (PDFPattern)iter.next();
- p.append(" /" + currentPattern.getName() + " "
- + currentPattern.referencePDF() + " ");
- }
-
- p.append(">>\n");
- }
- // "free" the memory. Sorta.
- currentPattern = null;
-
- p.append("/ProcSet [ /PDF /ImageB /ImageC /Text ]\n");
-
- if (this.xObjects != null && !this.xObjects.isEmpty()) {
- p = p.append("/XObject <<\n");
- for (Iterator iter = xObjects.iterator(); iter.hasNext();) {
- PDFXObject xobj = (PDFXObject)iter.next();
- p = p.append(" " + xobj.getName() + " "
- + xobj.referencePDF()
- + "\n");
- }
- p = p.append(">>\n");
- }
-
- if (!this.gstates.isEmpty()) {
- p = p.append("/ExtGState <<\n");
- for (Iterator iter = gstates.iterator(); iter.hasNext();) {
- PDFGState gs = (PDFGState)iter.next();
- p = p.append(" /" + gs.getName() + " "
- + gs.referencePDF()
- + "\n");
- }
- p = p.append(">>\n");
- }
-
- if (!this.colorSpaces.isEmpty()) {
- p = p.append("/ColorSpace <<\n");
- for (Iterator iter = colorSpaces.values().iterator(); iter.hasNext();) {
- PDFICCBasedColorSpace colorSpace = (PDFICCBasedColorSpace)iter.next();
- p = p.append(" /" + colorSpace.getName() + " "
- + colorSpace.referencePDF()
- + "\n");
- }
- p = p.append(">>\n");
- }
-
- p = p.append(">>\nendobj\n");
-
- return p.toString();
- }
-
- }
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