| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.cocoon.reading.imageop; |
| |
| import java.awt.image.RescaleOp; |
| import java.awt.image.WritableRaster; |
| import org.apache.avalon.framework.parameters.Parameters; |
| |
| public class ColorOperation |
| implements ImageOperation { |
| |
| private RescaleOp colorFilter; |
| private String prefix; |
| private boolean enabled; |
| |
| public void setPrefix( String prefix ) { |
| this.prefix = prefix; |
| } |
| |
| public void setup( Parameters params ) { |
| enabled = params.getParameterAsBoolean( prefix + "enabled", true); |
| float[] scaleColor = new float[3]; |
| float[] offsetColor = new float[3]; |
| scaleColor[0] = params.getParameterAsFloat( prefix + "scale-red", -1.0f); |
| scaleColor[1] = params.getParameterAsFloat( prefix + "scale-green", -1.0f); |
| scaleColor[2] = params.getParameterAsFloat( prefix + "scale-blue", -1.0f); |
| offsetColor[0] = params.getParameterAsFloat( prefix + "offset-red", 0.0f); |
| offsetColor[1] = params.getParameterAsFloat( prefix + "offset-green", 0.0f); |
| offsetColor[2] = params.getParameterAsFloat( prefix + "offset-blue", 0.0f); |
| colorFilter = new RescaleOp( scaleColor, offsetColor, null ); |
| } |
| |
| public WritableRaster apply( WritableRaster image ) { |
| if( ! enabled ) { |
| return image; |
| } |
| WritableRaster r = colorFilter.filter( image, null ); |
| return r; |
| } |
| |
| public String getKey() { |
| return "colorop:" |
| + ( enabled ? "enable" : "disable" ) |
| + ":" + colorFilter |
| + ":" + prefix; |
| } |
| } |