001/** 002 * 003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved. 004 * 005 * This library is free software; you can redistribute it and/or 006 * modify it under the terms of the GNU Lesser General Public 007 * License as published by the Free Software Foundation; either 008 * version 2.1 of the License, or (at your option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013 * Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public 016 * License along with this library. If not, see <http://www.gnu.org/licenses/>. 017 * 018 **/ 019/* 020* 021 022Licensed under the Apache License, Version 2.0 (the "License"); 023you may not use this file except in compliance with the License. 024You may obtain a copy of the License at 025 026 http://www.apache.org/licenses/LICENSE-2.0 027 028Unless required by applicable law or agreed to in writing, software 029distributed under the License is distributed on an "AS IS" BASIS, 030WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 031See the License for the specific language governing permissions and 032limitations under the License. 033*/ 034 035package lucee.runtime.img.filter;import java.awt.image.BufferedImage; 036 037import lucee.runtime.engine.ThreadLocalPageContext; 038import lucee.runtime.exp.FunctionException; 039import lucee.runtime.exp.PageException; 040import lucee.runtime.img.ImageUtil; 041import lucee.runtime.type.KeyImpl; 042import lucee.runtime.type.Struct; 043import lucee.runtime.type.util.CollectionUtil; 044 045/** 046 * A filter which allows the red, green and blue channels of an image to be mixed into each other. 047 */ 048public class ChannelMixFilter extends PointFilter implements DynFiltering { 049 050 private int blueGreen, redBlue, greenRed; 051 private int intoR, intoG, intoB; 052 053 public ChannelMixFilter() { 054 canFilterIndexColorModel = true; 055 } 056 057 public void setBlueGreen(int blueGreen) { 058 this.blueGreen = blueGreen; 059 } 060 061 public int getBlueGreen() { 062 return blueGreen; 063 } 064 065 public void setRedBlue(int redBlue) { 066 this.redBlue = redBlue; 067 } 068 069 public int getRedBlue() { 070 return redBlue; 071 } 072 073 public void setGreenRed(int greenRed) { 074 this.greenRed = greenRed; 075 } 076 077 public int getGreenRed() { 078 return greenRed; 079 } 080 081 public void setIntoR(int intoR) { 082 this.intoR = intoR; 083 } 084 085 public int getIntoR() { 086 return intoR; 087 } 088 089 public void setIntoG(int intoG) { 090 this.intoG = intoG; 091 } 092 093 public int getIntoG() { 094 return intoG; 095 } 096 097 public void setIntoB(int intoB) { 098 this.intoB = intoB; 099 } 100 101 public int getIntoB() { 102 return intoB; 103 } 104 105 public int filterRGB(int x, int y, int rgb) { 106 int a = rgb & 0xff000000; 107 int r = (rgb >> 16) & 0xff; 108 int g = (rgb >> 8) & 0xff; 109 int b = rgb & 0xff; 110 int nr = PixelUtils.clamp((intoR * (blueGreen*g+(255-blueGreen)*b)/255 + (255-intoR)*r)/255); 111 int ng = PixelUtils.clamp((intoG * (redBlue*b+(255-redBlue)*r)/255 + (255-intoG)*g)/255); 112 int nb = PixelUtils.clamp((intoB * (greenRed*r+(255-greenRed)*g)/255 + (255-intoB)*b)/255); 113 return a | (nr << 16) | (ng << 8) | nb; 114 } 115 116 public String toString() { 117 return "Colors/Mix Channels..."; 118 } 119 public BufferedImage filter(BufferedImage src, Struct parameters) throws PageException {BufferedImage dst=ImageUtil.createBufferedImage(src); 120 Object o; 121 if((o=parameters.removeEL(KeyImpl.init("BlueGreen")))!=null)setBlueGreen(ImageFilterUtil.toIntValue(o,"BlueGreen")); 122 if((o=parameters.removeEL(KeyImpl.init("RedBlue")))!=null)setRedBlue(ImageFilterUtil.toIntValue(o,"RedBlue")); 123 if((o=parameters.removeEL(KeyImpl.init("GreenRed")))!=null)setGreenRed(ImageFilterUtil.toIntValue(o,"GreenRed")); 124 if((o=parameters.removeEL(KeyImpl.init("IntoR")))!=null)setIntoR(ImageFilterUtil.toIntValue(o,"IntoR")); 125 if((o=parameters.removeEL(KeyImpl.init("IntoG")))!=null)setIntoG(ImageFilterUtil.toIntValue(o,"IntoG")); 126 if((o=parameters.removeEL(KeyImpl.init("IntoB")))!=null)setIntoB(ImageFilterUtil.toIntValue(o,"IntoB")); 127 if((o=parameters.removeEL(KeyImpl.init("Dimensions")))!=null){ 128 int[] dim=ImageFilterUtil.toDimensions(o,"Dimensions"); 129 setDimensions(dim[0],dim[1]); 130 } 131 132 // check for arguments not supported 133 if(parameters.size()>0) { 134 throw new FunctionException(ThreadLocalPageContext.get(), "ImageFilter", 3, "parameters", "the parameter"+(parameters.size()>1?"s":"")+" ["+CollectionUtil.getKeyList(parameters,", ")+"] "+(parameters.size()>1?"are":"is")+" not allowed, only the following parameters are supported [BlueGreen, RedBlue, GreenRed, IntoR, IntoG, IntoB, Dimensions]"); 135 } 136 137 return filter(src, dst); 138 } 139} 140