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- /*
- * $Id$
- * ============================================================================
- * The Apache Software License, Version 1.1
- * ============================================================================
- *
- * Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modifica-
- * tion, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * 3. The end-user documentation included with the redistribution, if any, must
- * include the following acknowledgment: "This product includes software
- * developed by the Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself, if
- * and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "FOP" and "Apache Software Foundation" must not be used to
- * endorse or promote products derived from this software without prior
- * written permission. For written permission, please contact
- * apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache", nor may
- * "Apache" appear in their name, without prior written permission of the
- * Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
- * DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * ============================================================================
- *
- * This software consists of voluntary contributions made by many individuals
- * on behalf of the Apache Software Foundation and was originally created by
- * James Tauber <jtauber@jtauber.com>. For more information on the Apache
- * Software Foundation, please see <http://www.apache.org/>.
- */
-
- /*
- * This file is part of the RTF library of the FOP project, which was originally
- * created by Bertrand Delacretaz <bdelacretaz@codeconsult.ch> and by other
- * contributors to the jfor project (www.jfor.org), who agreed to donate jfor to
- * the FOP project.
- */
-
- package org.apache.fop.render.rtf.rtflib.rtfdoc;
-
- import java.util.Vector;
- import java.util.Hashtable;
- import java.io.IOException;
-
- /**
- * Singelton of the RTF color table.
- * This class was created for <fo:basic-link> tag processing.
- * @author <a href="mailto:a.putz@skynamics.com">Andreas Putz</a>
- */
-
- public class RtfColorTable {
- //////////////////////////////////////////////////
- // @@ Symbolic constants
- //////////////////////////////////////////////////
-
- // Defines the bit moving for the colors
- private static final int RED = 16;
- private static final int GREEN = 8;
- private static final int BLUE = 0;
-
-
- //////////////////////////////////////////////////
- // @@ Members
- //////////////////////////////////////////////////
-
- /** Singelton instance */
- private static RtfColorTable instance = null;
-
- /** Index table for the colors */
- private Hashtable colorIndex = null;
- /** Used colors to this vector */
- private Vector colorTable = null;
- /** Map of color names to color numbers */
- private Hashtable namedColors = null;
-
-
- //////////////////////////////////////////////////
- // @@ Construction
- //////////////////////////////////////////////////
-
- /**
- * Constructor.
- */
- private RtfColorTable () {
- colorTable = new Vector ();
- colorIndex = new Hashtable ();
- namedColors = new Hashtable ();
-
- init ();
- }
-
- /**
- * Singelton.
- *
- * @return The instance of RTFColorTable
- */
- public static RtfColorTable getInstance () {
- if (instance == null) {
- instance = new RtfColorTable ();
- }
-
- return instance;
- }
-
-
- //////////////////////////////////////////////////
- // @@ Initializing
- //////////////////////////////////////////////////
-
- /**
- * Initialize the color table.
- */
- private void init () {
- addNamedColor("black", getColorNumber (0, 0, 0).intValue());
- addNamedColor("white", getColorNumber (255, 255, 255).intValue());
- addNamedColor("red", getColorNumber (255, 0, 0).intValue());
- addNamedColor("green", getColorNumber (0, 255, 0).intValue());
- addNamedColor("blue", getColorNumber (0, 0, 255).intValue());
- addNamedColor("cyan", getColorNumber (0, 255, 255).intValue());
- addNamedColor("magenta", getColorNumber (255, 0, 255).intValue());
- addNamedColor("yellow", getColorNumber (255, 255, 0).intValue());
-
- getColorNumber (0, 0, 128);
- getColorNumber (0, 128, 128);
- getColorNumber (0, 128, 0);
- getColorNumber (128, 0, 128);
- getColorNumber (128, 0, 0);
- getColorNumber (128, 128, 0);
- getColorNumber (128, 128, 128);
-
- // Added by Normand Masse
- // Gray color added
- addNamedColor("gray", getColorNumber(128, 128, 128).intValue());
-
- getColorNumber (192, 192, 192);
- }
-
- /** define a named color for getColorNumber(String) */
- private void addNamedColor(String name, int colorNumber) {
- namedColors.put(name.toLowerCase(), new Integer(colorNumber));
- }
-
- //////////////////////////////////////////////////
- // @@ Public methods
- //////////////////////////////////////////////////
-
- /**
- * @param name a named color
- * @return the RTF number of a named color, or null if name not found
- */
- public Integer getColorNumber (String name) {
- return ((Integer)namedColors.get(name.toLowerCase()));
- }
-
- /**
- * Gets the number of color in the color table
- *
- * @param red Color level red
- * @param green Color level green
- * @param blue Color level blue
- *
- * @return The number of the color in the table
- */
- public Integer getColorNumber (int red, int green, int blue) {
- Integer identifier = new Integer (determineIdentifier (red, green, blue));
- Object o = colorIndex.get (identifier);
- int retVal;
-
- if (o == null) {
- addColor (identifier);
-
- retVal = colorTable.size ();
- } else {
- retVal = ((Integer) o).intValue ();
- }
-
- return new Integer(retVal + 1);
- }
-
- /**
- * Writes the color table in the header.
- *
- * @param header The header container to write in
- *
- * @throws IOException On error
- */
- public void writeColors (RtfHeader header) throws IOException {
- if (colorTable == null || colorTable.size () == 0) {
- return;
- }
-
- header.writeGroupMark (true);
- header.writeControlWord ("colortbl;");
-
- int len = colorTable.size ();
-
- for (int i = 0; i < len; i++) {
- int identifier = ((Integer) colorTable.get (i)).intValue ();
-
- header.write ("\\red" + determineColorLevel (identifier, RED));
- header.write ("\\green" + determineColorLevel (identifier, GREEN));
- header.write ("\\blue" + determineColorLevel (identifier, BLUE) + ";");
- }
-
- header.writeGroupMark (false);
- }
-
-
- //////////////////////////////////////////////////
- // @@ Private methods
- //////////////////////////////////////////////////
-
- /**
- * Adds a color to the table.
- *
- * @param i Identifier of color
- */
- private void addColor (Integer i) {
- colorIndex.put (i, new Integer (colorTable.size () + 1));
- colorTable.addElement (i);
- }
-
- /**
- * Determines a identifier for the color.
- *
- * @param red Color level red
- * @param green Color level green
- * @param blue Color level blue
- *
- * @return Unique identifier of color
- */
- private int determineIdentifier (int red, int green, int blue) {
- int c = red << RED;
-
- c += green << GREEN;
- c += blue << BLUE;
-
- return c;
- }
-
- /**
- * Determines the color level from the identifier.
- *
- * @param identifier Unique color identifier
- * @param color One of the bit moving constants
- *
- * @return Color level in byte size
- */
- private int determineColorLevel (int identifier, int color) {
- int retVal = (byte) (identifier >> color);
-
- return retVal < 0 ? retVal + 256 : retVal;
- }
- }
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