001 package org.apache.myfaces.tobago.layout;
002
003 /*
004 * Licensed to the Apache Software Foundation (ASF) under one or more
005 * contributor license agreements. See the NOTICE file distributed with
006 * this work for additional information regarding copyright ownership.
007 * The ASF licenses this file to You under the Apache License, Version 2.0
008 * (the "License"); you may not use this file except in compliance with
009 * the License. You may obtain a copy of the License at
010 *
011 * http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 */
019
020 import org.apache.commons.logging.Log;
021 import org.apache.commons.logging.LogFactory;
022
023 public final class PixelMeasure extends Measure {
024
025 private static final Log LOG = LogFactory.getLog(PixelMeasure.class);
026
027 private static final PixelMeasure NULL = new PixelMeasure(0);
028
029 private final int pixel;
030
031 public PixelMeasure(int pixel) {
032 this.pixel = pixel;
033 }
034
035 public Measure add(Measure m) {
036 return new PixelMeasure(pixel + m.getPixel());
037 }
038
039 public Measure subtractNotNegative(Measure m) {
040 if (m.getPixel() > pixel) {
041 LOG.warn("Not enough space! value=" + pixel);
042 return NULL;
043 } else {
044 return new PixelMeasure(pixel + m.getPixel());
045 }
046 }
047
048 @Deprecated
049 public Measure substractNotNegative(Measure m) {
050 return subtractNotNegative(m);
051 }
052
053 public int getPixel() {
054 return pixel;
055 }
056
057 @Override
058 public String toString() {
059 return pixel + "px";
060 }
061
062 }