001 /* 002 * 003 004 Licensed under the Apache License, Version 2.0 (the "License"); 005 you may not use this file except in compliance with the License. 006 You may obtain a copy of the License at 007 008 http://www.apache.org/licenses/LICENSE-2.0 009 010 Unless required by applicable law or agreed to in writing, software 011 distributed under the License is distributed on an "AS IS" BASIS, 012 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 See the License for the specific language governing permissions and 014 limitations under the License. 015 */ 016 017 package railo.runtime.img.filter;import java.awt.image.BufferedImage; 018 019 import railo.runtime.engine.ThreadLocalPageContext; 020 import railo.runtime.exp.FunctionException; 021 import railo.runtime.exp.PageException; 022 import railo.runtime.img.ImageUtil; 023 import railo.runtime.type.KeyImpl; 024 import railo.runtime.type.Struct; 025 import railo.runtime.type.util.CollectionUtil; 026 027 028 029 public class RGBAdjustFilter extends PointFilter implements DynFiltering { 030 031 public float rFactor, gFactor, bFactor; 032 033 public RGBAdjustFilter() { 034 this(0, 0, 0); 035 } 036 037 public RGBAdjustFilter(float r, float g, float b) { 038 rFactor = 1+r; 039 gFactor = 1+g; 040 bFactor = 1+b; 041 canFilterIndexColorModel = true; 042 } 043 044 public void setRFactor( float rFactor ) { 045 this.rFactor = 1+rFactor; 046 } 047 048 public float getRFactor() { 049 return rFactor-1; 050 } 051 052 public void setGFactor( float gFactor ) { 053 this.gFactor = 1+gFactor; 054 } 055 056 public float getGFactor() { 057 return gFactor-1; 058 } 059 060 public void setBFactor( float bFactor ) { 061 this.bFactor = 1+bFactor; 062 } 063 064 public float getBFactor() { 065 return bFactor-1; 066 } 067 068 public int[] getLUT() { 069 int[] lut = new int[256]; 070 for ( int i = 0; i < 256; i++ ) { 071 lut[i] = filterRGB( 0, 0, (i << 24) | (i << 16) | (i << 8) | i ); 072 } 073 return lut; 074 } 075 076 public int filterRGB(int x, int y, int rgb) { 077 int a = rgb & 0xff000000; 078 int r = (rgb >> 16) & 0xff; 079 int g = (rgb >> 8) & 0xff; 080 int b = rgb & 0xff; 081 r = PixelUtils.clamp((int)(r * rFactor)); 082 g = PixelUtils.clamp((int)(g * gFactor)); 083 b = PixelUtils.clamp((int)(b * bFactor)); 084 return a | (r << 16) | (g << 8) | b; 085 } 086 087 public String toString() { 088 return "Colors/Adjust RGB..."; 089 } 090 public BufferedImage filter(BufferedImage src, Struct parameters) throws PageException {BufferedImage dst=ImageUtil.createBufferedImage(src); 091 Object o; 092 if((o=parameters.removeEL(KeyImpl.init("BFactor")))!=null)setBFactor(ImageFilterUtil.toFloatValue(o,"BFactor")); 093 if((o=parameters.removeEL(KeyImpl.init("RFactor")))!=null)setRFactor(ImageFilterUtil.toFloatValue(o,"RFactor")); 094 if((o=parameters.removeEL(KeyImpl.init("GFactor")))!=null)setGFactor(ImageFilterUtil.toFloatValue(o,"GFactor")); 095 if((o=parameters.removeEL(KeyImpl.init("Dimensions")))!=null){ 096 int[] dim=ImageFilterUtil.toDimensions(o,"Dimensions"); 097 setDimensions(dim[0],dim[1]); 098 } 099 100 // check for arguments not supported 101 if(parameters.size()>0) { 102 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]"); 103 } 104 105 return filter(src, dst); 106 } 107 } 108