org.apache.fop.fo.expr.RGBColorFunction Maven / Gradle / Ivy
/*
* 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: RGBColorFunction.java 1328963 2012-04-22 20:09:42Z gadams $ */
package org.apache.fop.fo.expr;
import org.apache.fop.datatypes.PercentBase;
import org.apache.fop.datatypes.PercentBaseContext;
import org.apache.fop.fo.properties.ColorProperty;
import org.apache.fop.fo.properties.Property;
/**
* Implements the rgb() function.
*/
class RGBColorFunction extends FunctionBase {
/** {@inheritDoc} */
public int getRequiredArgsCount() {
return 3;
}
@Override
/** {@inheritDoc} */
public PercentBase getPercentBase() {
return new RGBPercentBase();
}
/** {@inheritDoc} */
public Property eval(Property[] args, PropertyInfo pInfo) throws PropertyException {
return ColorProperty.getInstance(pInfo.getUserAgent(),
"rgb(" + args[0] + ","
+ args[1] + "," + args[2] + ")");
}
private static class RGBPercentBase implements PercentBase {
public int getDimension() {
return 0;
}
public double getBaseValue() {
return 255f;
}
public int getBaseLength(PercentBaseContext context) {
return 0;
}
}
}