001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/ogcwebservices/wms/GraphicContextFactory.java $
002 /*----------------------------------------------------------------------------
003 This file is part of deegree, http://deegree.org/
004 Copyright (C) 2001-2009 by:
005 Department of Geography, University of Bonn
006 and
007 lat/lon GmbH
008
009 This library is free software; you can redistribute it and/or modify it under
010 the terms of the GNU Lesser General Public License as published by the Free
011 Software Foundation; either version 2.1 of the License, or (at your option)
012 any later version.
013 This library is distributed in the hope that it will be useful, but WITHOUT
014 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016 details.
017 You should have received a copy of the GNU Lesser General Public License
018 along with this library; if not, write to the Free Software Foundation, Inc.,
019 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020
021 Contact information:
022
023 lat/lon GmbH
024 Aennchenstr. 19, 53177 Bonn
025 Germany
026 http://lat-lon.de/
027
028 Department of Geography, University of Bonn
029 Prof. Dr. Klaus Greve
030 Postfach 1147, 53001 Bonn
031 Germany
032 http://www.geographie.uni-bonn.de/deegree/
033
034 e-mail: info@deegree.org
035 ----------------------------------------------------------------------------*/
036 package org.deegree.ogcwebservices.wms;
037
038 import static java.awt.image.DataBuffer.TYPE_BYTE;
039 import static java.awt.image.Raster.createBandedRaster;
040
041 import java.awt.Graphics;
042 import java.awt.image.BufferedImage;
043 import java.awt.image.ColorModel;
044
045 import javax.media.jai.PlanarImage;
046
047 import org.apache.batik.dom.GenericDOMImplementation;
048 import org.apache.batik.svggen.SVGGraphics2D;
049 import org.w3c.dom.DOMImplementation;
050 import org.w3c.dom.Document;
051
052 /**
053 *
054 *
055 * @version $Revision: 18195 $
056 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
057 */
058 public class GraphicContextFactory {
059
060 /**
061 * creates a graphic target object for the passed mime type. The target will be the object where to render the to. A
062 * <tt>BufferedImage</tt> for raster image mime types and a DOM <tt>Document</tt> for SVG.
063 *
064 * @param mimeType
065 * mime type to create a object for
066 * @param width
067 * width of the desired target object
068 * @param height
069 * height of the desired target object
070 *
071 * @return object to render to
072 */
073 public static synchronized Object createGraphicTarget( String mimeType, int width, int height ) {
074 // to avoid errors:
075 mimeType = mimeType.toLowerCase();
076
077 Object o = null;
078 if ( mimeType.equals( "image/jpg" ) || mimeType.equals( "image/jpeg" ) || mimeType.equals( "image/bmp" )
079 || mimeType.equals( "image/tif" ) || mimeType.equals( "image/tiff" ) ) {
080 o = new BufferedImage( width, height, BufferedImage.TYPE_INT_RGB );
081 } else if ( mimeType.equals( "image/gif" ) || mimeType.equals( "image/png" )
082 || mimeType.equals( "image/png; mode=24bit" ) ) {
083 o = new BufferedImage( width, height, BufferedImage.TYPE_INT_ARGB );
084 } else if ( mimeType.equals( "image/svg+xml" ) || mimeType.equals( "image/svg xml" ) ) {
085 // Get a DOMImplementation
086 DOMImplementation domImpl = GenericDOMImplementation.getDOMImplementation();
087
088 // Create an instance of org.w3c.dom.Document
089 o = domImpl.createDocument( null, "svg", null );
090 } else if ( mimeType.equals( "image/png; mode=8bit" ) ) {
091 ColorModel cm = PlanarImage.getDefaultColorModel( TYPE_BYTE, 4 );
092 o = new BufferedImage( cm, createBandedRaster( TYPE_BYTE, width, height, 4, null ), false, null );
093 }
094
095 return o;
096 }
097
098 /**
099 * creates a graphic context for the passed target considering the passed mime type
100 *
101 * @param mimeType
102 * mime type of the graphic (target)
103 * @param target
104 * object to render to.
105 *
106 * @return graphic context of the target
107 */
108 public static synchronized Graphics createGraphicContext( String mimeType, Object target ) {
109 // to avoid errors:
110 mimeType = mimeType.toLowerCase();
111
112 Graphics g = null;
113
114 if ( mimeType.equals( "image/jpg" ) || mimeType.equals( "image/jpeg" ) || mimeType.equals( "image/bmp" )
115 || mimeType.equals( "image/tif" ) || mimeType.equals( "image/tiff" ) || mimeType.equals( "image/gif" )
116 || mimeType.equals( "image/png" ) || mimeType.equals( "image/png; mode=8bit" )
117 || mimeType.equals( "image/png; mode=24bit" ) ) {
118 g = ( (BufferedImage) target ).getGraphics();
119 } else if ( mimeType.equals( "image/svg+xml" ) || mimeType.equals( "image/svg xml" ) ) {
120 // Create an instance of the SVG Generator
121 g = new SVGGraphics2D( (Document) target );
122 }
123
124 return g;
125 }
126 }