001: /*
002: * Copyright 2003 Paulo Soares
003: *
004: * The contents of this file are subject to the Mozilla Public License Version 1.1
005: * (the "License"); you may not use this file except in compliance with the License.
006: * You may obtain a copy of the License at http://www.mozilla.org/MPL/
007: *
008: * Software distributed under the License is distributed on an "AS IS" basis,
009: * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
010: * for the specific language governing rights and limitations under the License.
011: *
012: * The Original Code is 'iText, a free JAVA-PDF library'.
013: *
014: * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
015: * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
016: * All Rights Reserved.
017: * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
018: * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
019: *
020: * Contributor(s): all the names of the contributors are added in the source code
021: * where applicable.
022: *
023: * Alternatively, the contents of this file may be used under the terms of the
024: * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
025: * provisions of LGPL are applicable instead of those above. If you wish to
026: * allow use of your version of this file only under the terms of the LGPL
027: * License and not to allow others to use your version of this file under
028: * the MPL, indicate your decision by deleting the provisions above and
029: * replace them with the notice and other provisions required by the LGPL.
030: * If you do not delete the provisions above, a recipient may use your version
031: * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
032: *
033: * This library is free software; you can redistribute it and/or modify it
034: * under the terms of the MPL as stated above or under the terms of the GNU
035: * Library General Public License as published by the Free Software Foundation;
036: * either version 2 of the License, or any later version.
037: *
038: * This library is distributed in the hope that it will be useful, but WITHOUT
039: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
040: * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
041: * details.
042: *
043: * If you didn't download this code from the following link, you should check if
044: * you aren't using an obsolete version:
045: * http://www.lowagie.com/iText/
046: */
047: package com.lowagie.text.pdf;
048:
049: /** The graphic state dictionary.
050: *
051: * @author Paulo Soares (psoares@consiste.pt)
052: */
053: public class PdfGState extends PdfDictionary {
054: /** A possible blend mode */
055: public static final PdfName BM_NORMAL = new PdfName("Normal");
056: /** A possible blend mode */
057: public static final PdfName BM_COMPATIBLE = new PdfName(
058: "Compatible");
059: /** A possible blend mode */
060: public static final PdfName BM_MULTIPLY = new PdfName("Multiply");
061: /** A possible blend mode */
062: public static final PdfName BM_SCREEN = new PdfName("Screen");
063: /** A possible blend mode */
064: public static final PdfName BM_OVERLAY = new PdfName("Overlay");
065: /** A possible blend mode */
066: public static final PdfName BM_DARKEN = new PdfName("Darken");
067: /** A possible blend mode */
068: public static final PdfName BM_LIGHTEN = new PdfName("Lighten");
069: /** A possible blend mode */
070: public static final PdfName BM_COLORDODGE = new PdfName(
071: "ColorDodge");
072: /** A possible blend mode */
073: public static final PdfName BM_COLORBURN = new PdfName("ColorBurn");
074: /** A possible blend mode */
075: public static final PdfName BM_HARDLIGHT = new PdfName("HardLight");
076: /** A possible blend mode */
077: public static final PdfName BM_SOFTLIGHT = new PdfName("SoftLight");
078: /** A possible blend mode */
079: public static final PdfName BM_DIFFERENCE = new PdfName(
080: "Difference");
081: /** A possible blend mode */
082: public static final PdfName BM_EXCLUSION = new PdfName("Exclusion");
083:
084: /**
085: * Sets the flag whether to apply overprint for stroking.
086: * @param ov
087: */
088: public void setOverPrintStroking(boolean ov) {
089: put(PdfName.OP, ov ? PdfBoolean.PDFTRUE : PdfBoolean.PDFFALSE);
090: }
091:
092: /**
093: * Sets the flag whether to apply overprint for non stroking painting operations.
094: * @param ov
095: */
096: public void setOverPrintNonStroking(boolean ov) {
097: put(PdfName.op, ov ? PdfBoolean.PDFTRUE : PdfBoolean.PDFFALSE);
098: }
099:
100: /**
101: * Sets the flag whether to toggle knockout behavior for overprinted objects.
102: * @param ov - accepts 0 or 1
103: */
104: public void setOverPrintMode(int ov) {
105: put(PdfName.OPM, new PdfNumber(ov == 0 ? 0 : 1));
106: }
107:
108: /**
109: * Sets the current stroking alpha constant, specifying the constant shape or
110: * constant opacity value to be used for stroking operations in the transparent
111: * imaging model.
112: * @param n
113: */
114: public void setStrokeOpacity(float n) {
115: put(PdfName.CA, new PdfNumber(n));
116: }
117:
118: /**
119: * Sets the current stroking alpha constant, specifying the constant shape or
120: * constant opacity value to be used for nonstroking operations in the transparent
121: * imaging model.
122: * @param n
123: */
124: public void setFillOpacity(float n) {
125: put(PdfName.ca, new PdfNumber(n));
126: }
127:
128: /**
129: * The alpha source flag specifying whether the current soft mask
130: * and alpha constant are to be interpreted as shape values (true)
131: * or opacity values (false).
132: * @param v
133: */
134: public void setAlphaIsShape(boolean v) {
135: put(PdfName.AIS, v ? PdfBoolean.PDFTRUE : PdfBoolean.PDFFALSE);
136: }
137:
138: /**
139: * Determines the behaviour of overlapping glyphs within a text object
140: * in the transparent imaging model.
141: * @param v
142: */
143: public void setTextKnockout(boolean v) {
144: put(PdfName.TK, v ? PdfBoolean.PDFTRUE : PdfBoolean.PDFFALSE);
145: }
146:
147: /**
148: * The current blend mode to be used in the transparent imaging model.
149: * @param bm
150: */
151: public void setBlendMode(PdfName bm) {
152: put(PdfName.BM, bm);
153: }
154:
155: }
|