/*
* 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.afp.modca.triplets;
import java.io.IOException;
import java.io.OutputStream;
/**
* This triplet is used to specify the resulting appearance when data in a new
* presentation space is merged with data in an existing presentation space.
*/
public class PresentationSpaceMixingRulesTriplet extends AbstractTriplet {
/** background on background mixing rule */
public static final byte RULE_BACK_ON_BACK = 0x70;
/** background on foreground mixing rule */
public static final byte RULE_BACK_ON_FORE = 0x71;
/** foreground on background mixing rule */
public static final byte RULE_FORE_ON_BACK = 0x72;
/** foreground on foreground mixing rule */
public static final byte RULE_FORE_ON_FORE = 0x73;
/** overpaint */
public static final byte OVERPAINT = (byte)0x01;
/** underpaint */
public static final byte UNDERPAINT = (byte)0x02;
/** blend */
public static final byte BLEND = (byte)0x03;
/** MO:DCA default mixing */
public static final byte DEFAULT = (byte)0xFF;
/** the mixing rules */
private final byte[] rules;
/**
* Main constructor
*
* @param rules the mixing rules
*/
public PresentationSpaceMixingRulesTriplet(byte[] rules) {
super(PRESENTATION_SPACE_MIXING_RULE);
this.rules = rules;
}
/** {@inheritDoc} */
public int getDataLength() {
return 2 + rules.length;
}
/** {@inheritDoc} */
public void writeToStream(OutputStream os) throws IOException {
byte[] data = getData();
System.arraycopy(rules, 0, data, 2, rules.length);
os.write(data);
}
}