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 **/ 019package lucee.runtime.functions.image; 020 021import java.awt.Color; 022 023import lucee.commons.color.ColorCaster; 024import lucee.commons.lang.StringUtil; 025import lucee.runtime.PageContext; 026import lucee.runtime.exp.FunctionException; 027import lucee.runtime.exp.PageException; 028import lucee.runtime.img.filter.GrayscaleColormap; 029import lucee.runtime.img.filter.LinearColormap; 030import lucee.runtime.img.filter.SpectrumColormap; 031 032public class ImageFilterColorMap { 033 public static Object call(PageContext pc, String type) throws PageException { 034 return call(pc, type, null, null); 035 } 036 public static Object call(PageContext pc, String type, String lineColor1) throws PageException { 037 return call(pc, type, lineColor1, null); 038 039 } 040 public static Object call(PageContext pc, String type, String lineColor1,String lineColor2) throws PageException { 041 type=type.toLowerCase().trim(); 042 043 if("grayscale".equals(type)) return new GrayscaleColormap(); 044 else if("spectrum".equals(type)) return new SpectrumColormap(); 045 else if("linear".equals(type)) { 046 boolean isEmpty1=StringUtil.isEmpty(lineColor1); 047 boolean isEmpty2=StringUtil.isEmpty(lineColor2); 048 049 if(isEmpty1 && isEmpty2) return new LinearColormap(); 050 else if(!isEmpty1 && !isEmpty2) { 051 Color color1 = ColorCaster.toColor(lineColor1); 052 Color color2 = ColorCaster.toColor(lineColor2); 053 return new LinearColormap(color1.getRGB(),color2.getRGB()); 054 } 055 else 056 throw new FunctionException(pc, "ImageFilterColorMap", 2, "lineColor1", "when you define linecolor1 you have to define linecolor2 as well"); 057 058 } 059 else throw new FunctionException(pc, "ImageFilterColorMap", 1, "type", "invalid type defintion, valid types are [grayscale,spectrum,linear]"); 060 061 062 063 064 } 065}