You are viewing a plain text version of this content. The canonical link for it is here.
Posted to fop-commits@xmlgraphics.apache.org by es...@locus.apache.org on 2000/05/23 11:18:55 UTC
cvs commit: xml-fop/src/org/apache/fop/pdf PDFFilter.java
eschaeffer 00/05/23 02:18:55
Added: src/org/apache/fop/pdf PDFFilter.java
Log:
PDFFilter, represent a filter
Revision Changes Path
1.1 xml-fop/src/org/apache/fop/pdf/PDFFilter.java
Index: PDFFilter.java
===================================================================
/*
============================================================================
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 <jt...@jtauber.com>. For more information on the Apache
Software Foundation, please see <http://www.apache.org/>.
*/
//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;
}
}