001/* 002Copyright 2006 Jerry Huxtable 003 004Licensed under the Apache License, Version 2.0 (the "License"); 005you may not use this file except in compliance with the License. 006You may obtain a copy of the License at 007 008 http://www.apache.org/licenses/LICENSE-2.0 009 010Unless required by applicable law or agreed to in writing, software 011distributed under the License is distributed on an "AS IS" BASIS, 012WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013See the License for the specific language governing permissions and 014limitations under the License. 015*/ 016 017package com.jhlabs.image; 018 019import java.awt.*; 020import java.awt.image.*; 021import java.io.*; 022 023/** 024 * Applies a bit mask to each ARGB pixel of an image. You can use this for, say, masking out the red channel. 025 */ 026public class MaskFilter extends PointFilter { 027 028 private int mask; 029 030 public MaskFilter() { 031 this(0xff00ffff); 032 } 033 034 public MaskFilter(int mask) { 035 canFilterIndexColorModel = true; 036 setMask(mask); 037 } 038 039 public void setMask(int mask) { 040 this.mask = mask; 041 } 042 043 public int getMask() { 044 return mask; 045 } 046 047 public int filterRGB(int x, int y, int rgb) { 048 return rgb & mask; 049 } 050 051 public String toString() { 052 return "Mask"; 053 } 054 055}