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 javax.media.jai.operator.TransposeDescriptor;
022import javax.media.jai.operator.TransposeType;
023
024import lucee.runtime.PageContext;
025import lucee.runtime.exp.FunctionException;
026import lucee.runtime.exp.PageException;
027import lucee.runtime.img.Image;
028
029public class ImageFlip {
030        public static String call(PageContext pc, Object name) throws PageException {
031                return call(pc,name,"vertical");
032        }
033        public static String call(PageContext pc, Object name, String strTranspose) throws PageException {
034                //if(name instanceof String) name=pc.getVariable(Caster.toString(name));
035                Image img = Image.toImage(pc,name);
036                
037                strTranspose=strTranspose.toLowerCase().trim();
038                TransposeType transpose = TransposeDescriptor.FLIP_VERTICAL;
039                if("vertical".equals(strTranspose)) transpose=TransposeDescriptor.FLIP_VERTICAL;
040                else if("horizontal".equals(strTranspose)) transpose=TransposeDescriptor.FLIP_HORIZONTAL;
041                else if("diagonal".equals(strTranspose)) transpose=TransposeDescriptor.FLIP_DIAGONAL;
042                else if("antidiagonal".equals(strTranspose)) transpose=TransposeDescriptor.FLIP_ANTIDIAGONAL;
043                else if("anti diagonal".equals(strTranspose)) transpose=TransposeDescriptor.FLIP_ANTIDIAGONAL;
044                else if("anti-diagonal".equals(strTranspose)) transpose=TransposeDescriptor.FLIP_ANTIDIAGONAL;
045                else if("anti_diagonal".equals(strTranspose)) transpose=TransposeDescriptor.FLIP_ANTIDIAGONAL;
046                else if("90".equals(strTranspose)) transpose=TransposeDescriptor.ROTATE_90;
047                else if("180".equals(strTranspose)) transpose=TransposeDescriptor.ROTATE_180;
048                else if("270".equals(strTranspose)) transpose=TransposeDescriptor.ROTATE_270;
049                else throw new FunctionException(pc,"ImageFlip",2,"transpose","invalid transpose definition ["+strTranspose+"], " +
050                                "valid transpose values are [vertical,horizontal,diagonal,90,180,270]");
051                
052                img.flip(transpose);
053                return null;
054        }
055        
056}