From 177da0a51401c4c0abd7f81d2c899533f3d03161 Mon Sep 17 00:00:00 2001 From: eschaeffer Date: Tue, 23 May 2000 09:18:55 +0000 Subject: [PATCH] PDFFilter, represent a filter git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@193370 13f79535-47bb-0310-9956-ffa450edef68 --- src/org/apache/fop/pdf/PDFFilter.java | 236 ++++++++++++++++++++++++++ 1 file changed, 236 insertions(+) create mode 100644 src/org/apache/fop/pdf/PDFFilter.java diff --git a/src/org/apache/fop/pdf/PDFFilter.java b/src/org/apache/fop/pdf/PDFFilter.java new file mode 100644 index 000000000..b0adc29c0 --- /dev/null +++ b/src/org/apache/fop/pdf/PDFFilter.java @@ -0,0 +1,236 @@ +/* + + ============================================================================ + The Apache Software License, Version 1.1 + ============================================================================ + + Copyright (C) 1999 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 . For more information on the Apache + Software Foundation, please see . + +*/ + +//Author: Eric SCHAEFFER +//Description: represent a PDF filter object + +package org.apache.fop.pdf; + +public class PDFFilter { + public static int ASCII_HEX_DECODE = 1; + public static int ASCII_85_DECODE = 2; + public static int LZW_DECODE = 3; + public static int RUN_LENGTH_DECODE = 4; + public static int CCITT_FAX_DECODE = 5; + public static int DCT_DECODE = 6; + public static int FLATE_DECODE = 7; + + // Filter type + private int m_filterType; + + // Properties + + // LZW - Flat + private Integer m_predictor = null; + // LZW - Flat - CCITT + private Integer m_columns = null; + // LZW - Flat + private Integer m_colors = null; + // LZW - Flat + private Integer m_bitsPerComponent = null; + // LZW + private Integer m_earlyChange = null; + // CCITT + private Integer m_k = null; + // CCITT + private Boolean m_endOfLine = null; + // CCITT + private Boolean m_encodedByteAlign = null; + // CCITT + private Integer m_rows = null; + // CCITT + private Boolean m_endOfBlock = null; + // CCITT + private Boolean m_blackls1 = null; + // CCITT + private Integer m_damagedRowsBeforeError = null; + + public PDFFilter(int filter) throws PDFFilterException { + if ( (filter != ASCII_HEX_DECODE) && + (filter != ASCII_85_DECODE) && + (filter != LZW_DECODE) && + (filter != RUN_LENGTH_DECODE) && + (filter != CCITT_FAX_DECODE) && + (filter != DCT_DECODE) && + (filter != FLATE_DECODE) + ) { + throw new PDFFilterException("Filter type not supported"); + } + this.m_filterType = filter; + } + + public int getType() { + return this.m_filterType; + } + + public void setPredictor(Integer value) throws PDFFilterException { + if ((this.m_filterType != LZW_DECODE) && (this.m_filterType != FLATE_DECODE)) { + throw new PDFFilterException("No Predictor property for this filter"); + } + + this.m_predictor = value; + } + + public Integer getPredictor() throws PDFFilterException { + if ((this.m_filterType != LZW_DECODE) && (this.m_filterType != FLATE_DECODE)) { + throw new PDFFilterException("No Predictor property for this filter"); + } + + return this.m_predictor; + } + +// ... etc ... + + public String toPDF() { + String pdf = null; +/* + public static int DCT_DECODE = 6; +*/ + if (this.m_filterType == ASCII_HEX_DECODE) { + pdf = "/ASCIIHexDecode"; + } else if (this.m_filterType == ASCII_85_DECODE) { + pdf = "/ASCI85Decode"; + } else if (this.m_filterType == LZW_DECODE) { + StringBuffer buffer = new StringBuffer(); + buffer.append("/LZWDecode"); + + if (this.m_predictor != null) { + buffer.append(" /Predictor "); + buffer.append(this.m_predictor); + } + if (this.m_columns != null) { + buffer.append(" /Columns "); + buffer.append(this.m_columns); + } + if (this.m_colors != null) { + buffer.append(" /Colors "); + buffer.append(this.m_colors); + } + if (this.m_bitsPerComponent != null) { + buffer.append(" /BitsPerComponent "); + buffer.append(this.m_bitsPerComponent); + } + if (this.m_earlyChange != null) { + buffer.append(" /EarlyChange "); + buffer.append(this.m_earlyChange); + } + + pdf = buffer.toString(); + } else if (this.m_filterType == FLATE_DECODE) { + StringBuffer buffer = new StringBuffer(); + buffer.append("/FlateDecode"); + + if (this.m_predictor != null) { + buffer.append(" /Predictor "); + buffer.append(this.m_predictor); + } + if (this.m_columns != null) { + buffer.append(" /Columns "); + buffer.append(this.m_columns); + } + if (this.m_colors != null) { + buffer.append(" /Colors "); + buffer.append(this.m_colors); + } + if (this.m_bitsPerComponent != null) { + buffer.append(" /BitsPerComponent "); + buffer.append(this.m_bitsPerComponent); + } + + pdf = buffer.toString(); + } else if (this.m_filterType == RUN_LENGTH_DECODE) { + pdf = "/RunLengthDecode"; + } else if (this.m_filterType == CCITT_FAX_DECODE) { + StringBuffer buffer = new StringBuffer(); + buffer.append("/CCITTFaxDecode"); + + if (this.m_k != null) { + buffer.append(" /K "); + buffer.append(this.m_k); + } + if (this.m_endOfLine != null) { + buffer.append(" /EndOfLine "); + buffer.append(this.m_endOfLine); + } + if (this.m_encodedByteAlign != null) { + buffer.append(" /EncodedByteAlign "); + buffer.append(this.m_encodedByteAlign); + } + if (this.m_columns != null) { + buffer.append(" /Columns "); + buffer.append(this.m_columns); + } + if (this.m_rows != null) { + buffer.append(" /Rows "); + buffer.append(this.m_rows); + } + if (this.m_endOfBlock != null) { + buffer.append(" /EndOfBlock "); + buffer.append(this.m_endOfBlock); + } + if (this.m_blackls1 != null) { + buffer.append(" /Blackls1 "); + buffer.append(this.m_blackls1); + } + if (this.m_damagedRowsBeforeError != null) { + buffer.append(" /DamagedRowsBeforeError "); + buffer.append(this.m_damagedRowsBeforeError); + } + + pdf = buffer.toString(); + } else if (this.m_filterType == DCT_DECODE) { + pdf = "/DCTDecode"; + } + + return pdf; + } + +} -- 2.39.5