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 /** 030 * A filter which produces the stipple effect for Swing icons specified in the Java Look and Feel Guidelines. 031 */ 032 public class JavaLnFFilter extends PointFilter implements DynFiltering { 033 034 public JavaLnFFilter() { 035 } 036 037 public int filterRGB(int x, int y, int rgb) { 038 if ((x & 1) == (y & 1)) 039 return rgb; 040 return ImageMath.mixColors(0.25f, 0xff999999, rgb); 041 } 042 043 public String toString() { 044 return "Stylize/Java L&F Stipple"; 045 } 046 047 public BufferedImage filter(BufferedImage src, Struct parameters) throws PageException {BufferedImage dst=ImageUtil.createBufferedImage(src); 048 Object o; 049 if((o=parameters.removeEL(KeyImpl.init("Dimensions")))!=null){ 050 int[] dim=ImageFilterUtil.toDimensions(o,"Dimensions"); 051 setDimensions(dim[0],dim[1]); 052 } 053 054 // check for arguments not supported 055 if(parameters.size()>0) { 056 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 [Dimensions]"); 057 } 058 059 return filter(src, dst); 060 } 061 } 062 063