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 import java.awt.image.BufferedImageOp; 019 020 import railo.runtime.engine.ThreadLocalPageContext; 021 import railo.runtime.exp.FunctionException; 022 import railo.runtime.exp.PageException; 023 import railo.runtime.img.ImageUtil; 024 import railo.runtime.type.List; 025 import railo.runtime.type.Struct; 026 027 /** 028 * A BufferedImageOp which combines two other BufferedImageOps, one after the other. 029 */ 030 public class CompoundFilter extends AbstractBufferedImageOp implements DynFiltering { 031 private BufferedImageOp filter1; 032 private BufferedImageOp filter2; 033 034 /** 035 * Construct a CompoundFilter. 036 * @param filter1 the first filter 037 * @param filter2 the second filter 038 */ 039 public CompoundFilter( BufferedImageOp filter1, BufferedImageOp filter2 ) { 040 this.filter1 = filter1; 041 this.filter2 = filter2; 042 } 043 044 public BufferedImage filter( BufferedImage src, BufferedImage dst ) { 045 BufferedImage image = filter1.filter( src, dst ); 046 image = filter2.filter( image, dst ); 047 return image; 048 } 049 public BufferedImage filter(BufferedImage src, Struct parameters) throws PageException {BufferedImage dst=ImageUtil.createBufferedImage(src); 050 Object o; 051 052 // check for arguments not supported 053 if(parameters.size()>0) { 054 throw new FunctionException(ThreadLocalPageContext.get(), "ImageFilter", 3, "parameters", "the parameter"+(parameters.size()>1?"s":"")+" ["+List.arrayToList(parameters.keysAsString(),", ")+"] "+(parameters.size()>1?"are":"is")+" not allowed, only the following parameters are supported []"); 055 } 056 057 return filter(src, dst); 058 } 059 }