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 /* 024 * Date: 23.01.2008 20:21:08 025 */ 026 public final class PixelMeasure extends Measure { 027 028 private static final Log LOG = LogFactory.getLog(PixelMeasure.class); 029 030 private static final PixelMeasure NULL = new PixelMeasure(0); 031 032 private final int pixel; 033 034 public PixelMeasure(int pixel) { 035 this.pixel = pixel; 036 } 037 038 public Measure add(Measure m) { 039 return new PixelMeasure(pixel + m.getPixel()); 040 } 041 042 public Measure substractNotNegative(Measure m) { 043 if (m.getPixel() > pixel) { 044 LOG.warn("Not enough space! value=" + pixel); 045 return NULL; 046 } else { 047 return new PixelMeasure(pixel + m.getPixel()); 048 } 049 } 050 051 public int getPixel() { 052 return pixel; 053 } 054 055 @Override 056 public String toString() { 057 return pixel + "px"; 058 } 059 060 }