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 047public class RGBAdjustFilter extends PointFilter implements DynFiltering { 048 049 public float rFactor, gFactor, bFactor; 050 051 public RGBAdjustFilter() { 052 this(0, 0, 0); 053 } 054 055 public RGBAdjustFilter(float r, float g, float b) { 056 rFactor = 1+r; 057 gFactor = 1+g; 058 bFactor = 1+b; 059 canFilterIndexColorModel = true; 060 } 061 062 public void setRFactor( float rFactor ) { 063 this.rFactor = 1+rFactor; 064 } 065 066 public float getRFactor() { 067 return rFactor-1; 068 } 069 070 public void setGFactor( float gFactor ) { 071 this.gFactor = 1+gFactor; 072 } 073 074 public float getGFactor() { 075 return gFactor-1; 076 } 077 078 public void setBFactor( float bFactor ) { 079 this.bFactor = 1+bFactor; 080 } 081 082 public float getBFactor() { 083 return bFactor-1; 084 } 085 086 public int[] getLUT() { 087 int[] lut = new int[256]; 088 for ( int i = 0; i < 256; i++ ) { 089 lut[i] = filterRGB( 0, 0, (i << 24) | (i << 16) | (i << 8) | i ); 090 } 091 return lut; 092 } 093 094 public int filterRGB(int x, int y, int rgb) { 095 int a = rgb & 0xff000000; 096 int r = (rgb >> 16) & 0xff; 097 int g = (rgb >> 8) & 0xff; 098 int b = rgb & 0xff; 099 r = PixelUtils.clamp((int)(r * rFactor)); 100 g = PixelUtils.clamp((int)(g * gFactor)); 101 b = PixelUtils.clamp((int)(b * bFactor)); 102 return a | (r << 16) | (g << 8) | b; 103 } 104 105 public String toString() { 106 return "Colors/Adjust RGB..."; 107 } 108 public BufferedImage filter(BufferedImage src, Struct parameters) throws PageException {BufferedImage dst=ImageUtil.createBufferedImage(src); 109 Object o; 110 if((o=parameters.removeEL(KeyImpl.init("BFactor")))!=null)setBFactor(ImageFilterUtil.toFloatValue(o,"BFactor")); 111 if((o=parameters.removeEL(KeyImpl.init("RFactor")))!=null)setRFactor(ImageFilterUtil.toFloatValue(o,"RFactor")); 112 if((o=parameters.removeEL(KeyImpl.init("GFactor")))!=null)setGFactor(ImageFilterUtil.toFloatValue(o,"GFactor")); 113 if((o=parameters.removeEL(KeyImpl.init("Dimensions")))!=null){ 114 int[] dim=ImageFilterUtil.toDimensions(o,"Dimensions"); 115 setDimensions(dim[0],dim[1]); 116 } 117 118 // check for arguments not supported 119 if(parameters.size()>0) { 120 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 [BFactor, RFactor, GFactor, Dimensions]"); 121 } 122 123 return filter(src, dst); 124 } 125} 126