001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 020 package org.apache.myfaces.tobago.layout; 021 022 import org.apache.commons.logging.Log; 023 import org.apache.commons.logging.LogFactory; 024 025 public final class PixelMeasure extends Measure { 026 027 private static final Log LOG = LogFactory.getLog(PixelMeasure.class); 028 029 private static final PixelMeasure NULL = new PixelMeasure(0); 030 031 private final int pixel; 032 033 public PixelMeasure(int pixel) { 034 this.pixel = pixel; 035 } 036 037 public Measure add(Measure m) { 038 return new PixelMeasure(pixel + m.getPixel()); 039 } 040 041 public Measure subtractNotNegative(Measure m) { 042 if (m.getPixel() > pixel) { 043 LOG.warn("Not enough space! value=" + pixel); 044 return NULL; 045 } else { 046 return new PixelMeasure(pixel + m.getPixel()); 047 } 048 } 049 050 @Deprecated 051 public Measure substractNotNegative(Measure m) { 052 return subtractNotNegative(m); 053 } 054 055 public int getPixel() { 056 return pixel; 057 } 058 059 @Override 060 public String toString() { 061 return pixel + "px"; 062 } 063 064 }