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/*
* 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.render.ps;
import java.io.IOException;
import org.apache.xmlgraphics.ps.DSCConstants;
import org.apache.xmlgraphics.ps.PSGenerator;
import org.apache.xmlgraphics.ps.PSProcSet;
/**
* Proc Set with FOP-specific procs.
*/
public final class FOPProcSet extends PSProcSet {
/** Singleton instance of the FOP procset */
public static final FOPProcSet INSTANCE = new FOPProcSet();
private FOPProcSet() {
super("Apache FOP Std ProcSet", 1.0f, 0);
}
/**
* Writes the procset to the PostScript file.
* @param gen the PS generator
* @throws IOException if an I/O error occurs
*/
public void writeTo(PSGenerator gen) throws IOException {
gen.writeDSCComment(DSCConstants.BEGIN_RESOURCE,
new Object[] {TYPE_PROCSET, getName(),
Float.toString(getVersion()), Integer.toString(getRevision())});
gen.writeDSCComment(DSCConstants.VERSION,
new Object[] {Float.toString(getVersion()), Integer.toString(getRevision())});
gen.writeDSCComment(DSCConstants.COPYRIGHT, "Copyright 2009 "
+ "The Apache Software Foundation. "
+ "License terms: http://www.apache.org/licenses/LICENSE-2.0");
gen.writeDSCComment(DSCConstants.TITLE,
"Basic set of procedures used by Apache FOP");
gen.writeln("/TJ { % Similar but not equal to PDF's TJ operator");
gen.writeln(" {");
gen.writeln(" dup type /stringtype eq");
gen.writeln(" { show }"); //normal text show
gen.writeln(" {");
gen.writeln(" dup type /arraytype eq");
gen.writeln(" { aload pop neg 1000 div exch 1000 div rmoveto }");
gen.writeln(" { neg 1000 div 0 rmoveto }");
gen.writeln(" ifelse");
gen.writeln(" }");
gen.writeln(" ifelse");
gen.writeln(" } forall");
gen.writeln("} bd");
gen.writeln("/ATJ { % As TJ but adds letter-spacing");
gen.writeln(" /ATJls exch def");
gen.writeln(" {");
gen.writeln(" dup type /stringtype eq");
gen.writeln(" { ATJls 0 3 2 roll ashow }"); //normal text show
gen.writeln(" { neg 1000 div 0 rmoveto }"); //negative X movement
gen.writeln(" ifelse");
gen.writeln(" } forall");
gen.writeln("} bd");
gen.writeDSCComment(DSCConstants.END_RESOURCE);
gen.getResourceTracker().registerSuppliedResource(this);
}
}
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