/*
 * 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.rtf;

import java.awt.Color;

import org.apache.fop.datatypes.Length;
import org.apache.fop.render.DummyPercentBaseContext;
import org.apache.fop.render.rtf.rtflib.rtfdoc.RtfAttributes;
import org.apache.fop.render.rtf.rtflib.rtfdoc.RtfColorTable;


/**
 * A RtfAttributes subclass that adds some helper set methods.
 */
public class FOPRtfAttributes extends RtfAttributes {

    /**
     * Set an attribute that has a Length value (internal units in twips)
     * @param name name of attribute
     * @param value value of attribute
     * @return this (which now contains the new entry)
     */
    public RtfAttributes setTwips(String name, Length value) {
        set(name, value.getValue() / (1000 / 20)); //Convert millipoints to twips
        return this;
    }

    /**
     * Set an attribute using a value in millipoints (internal units in twips)
     * @param name name of attribute
     * @param value value of attribute (in millipoints)
     * @return this (which now contains the new entry)
     */
    public RtfAttributes setTwips(String name, int value) {
        set(name, value / (1000 / 20)); //Convert millipoints to twips
        return this;
    }

    /**
     * Set an attribute that has a Length value (internal units in half-points)
     * @param name name of attribute
     * @param value value of attribute
     * @return this (which now contains the new entry)
     */
    public RtfAttributes setHalfPoints(String name, Length value) {
        //Convert millipoints to half-points
        set(name, value.getValue(DummyPercentBaseContext.getInstance()) / (1000 / 2));
        return this;
    }

    /**
     * Set an attribute that has a Color value.
     * @param name name of attribute
     * @param color value of attribute
     * @return this (which now contains the new entry)
     */
    public RtfAttributes set(String name, Color color) {
        // TODO: This code is duplicated in TextAttributesConverter
        int redComponent = color.getRed();
        int greenComponent = color.getGreen();
        int blueComponent = color.getBlue();
        set(name, RtfColorTable.getInstance().getColorNumber(
                redComponent, greenComponent, blueComponent));
        return this;
    }

}
