/*
* 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.fo.expr;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.fo.pagination.ColorProfile;
import org.apache.fop.fo.pagination.Declarations;
import org.apache.fop.fo.properties.ColorProperty;
import org.apache.fop.fo.properties.Property;
/**
* Implements the rgb-icc() function.
*/
class ICCColorFunction extends FunctionBase {
/**
* rgb-icc takes a variable number of arguments.
* At least 4 should be passed - returns -4
* @see org.apache.fop.fo.expr.Function#nbArgs()
*/
public int nbArgs() {
return -4;
}
/** @see org.apache.fop.fo.expr.Function */
public Property eval(Property[] args,
PropertyInfo pInfo) throws PropertyException {
StringBuffer sb = new StringBuffer();
// Map color profile NCNAME to src from declarations/color-profile element
String colorProfileName = args[3].getString();
Declarations decls = pInfo.getFO().getRoot().getDeclarations();
ColorProfile cp = decls.getColorProfile(colorProfileName);
if (cp == null) {
PropertyException pe = new PropertyException("The " + colorProfileName
+ " color profile was not declared");
pe.setPropertyInfo(pInfo);
throw pe;
}
String src = cp.getSrc();
// rgb-icc is replaced with fop-rgb-icc which has an extra fifth argument containing the
// color profile src attribute as it is defined in the color-profile declarations element.
sb.append("fop-rgb-icc(" + args[0]);
for (int ix = 1; ix < args.length; ix++) {
if (ix == 3) {
sb.append("," + colorProfileName);
sb.append(",\"" + src + "\"");
} else {
sb.append("," + args[ix]);
}
}
sb.append(")");
FOUserAgent ua = (pInfo == null
? null
: (pInfo.getFO() == null ? null : pInfo.getFO().getUserAgent()));
return new ColorProperty(ua, sb.toString());
}
}