001: //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/trunk/src/org/deegree/ogcwebservices/wms/GraphicContextFactory.java $
002: /*---------------- FILE HEADER ------------------------------------------
003:
004: This file is part of deegree.
005: Copyright (C) 2001-2008 by:
006: EXSE, Department of Geography, University of Bonn
007: http://www.giub.uni-bonn.de/deegree/
008: lat/lon GmbH
009: http://www.lat-lon.de
010:
011: This library is free software; you can redistribute it and/or
012: modify it under the terms of the GNU Lesser General Public
013: License as published by the Free Software Foundation; either
014: version 2.1 of the License, or (at your option) any later version.
015:
016: This library is distributed in the hope that it will be useful,
017: but WITHOUT ANY WARRANTY; without even the implied warranty of
018: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
019: Lesser General Public License for more details.
020:
021: You should have received a copy of the GNU Lesser General Public
022: License along with this library; if not, write to the Free Software
023: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
024:
025: Contact:
026:
027: Andreas Poth
028: lat/lon GmbH
029: Aennchenstr. 19
030: 53115 Bonn
031: Germany
032: E-Mail: poth@lat-lon.de
033:
034: Prof. Dr. Klaus Greve
035: Department of Geography
036: University of Bonn
037: Meckenheimer Allee 166
038: 53115 Bonn
039: Germany
040: E-Mail: greve@giub.uni-bonn.de
041:
042:
043: ---------------------------------------------------------------------------*/
044: package org.deegree.ogcwebservices.wms;
045:
046: import java.awt.Graphics;
047: import java.awt.image.BufferedImage;
048:
049: import org.apache.batik.dom.GenericDOMImplementation;
050: import org.apache.batik.svggen.SVGGraphics2D;
051: import org.w3c.dom.DOMImplementation;
052: import org.w3c.dom.Document;
053:
054: /**
055: *
056: *
057: * @version $Revision: 9345 $
058: * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
059: */
060: public class GraphicContextFactory {
061:
062: /**
063: * creates a graphic target object for the passed mime type. The target will be the object where
064: * to render the to. A <tt>BufferedImage</tt> for raster image mime types and a DOM
065: * <tt>Document</tt> for SVG.
066: *
067: * @param mimeType
068: * mime type to create a object for
069: * @param width
070: * width of the desired target object
071: * @param height
072: * height of the desired target object
073: *
074: * @return object to render to
075: */
076: public static synchronized Object createGraphicTarget(
077: String mimeType, int width, int height) {
078: // to avoid errors:
079: mimeType = mimeType.toLowerCase();
080:
081: Object o = null;
082: if (mimeType.equals("image/jpg")
083: || mimeType.equals("image/jpeg")
084: || mimeType.equals("image/bmp")
085: || mimeType.equals("image/tif")
086: || mimeType.equals("image/tiff")) {
087: o = new BufferedImage(width, height,
088: BufferedImage.TYPE_INT_RGB);
089: } else if (mimeType.equals("image/gif")
090: || mimeType.equals("image/png")) {
091: o = new BufferedImage(width, height,
092: BufferedImage.TYPE_INT_ARGB);
093: } else if (mimeType.equals("image/svg+xml")
094: || mimeType.equals("image/svg xml")) {
095: // Get a DOMImplementation
096: DOMImplementation domImpl = GenericDOMImplementation
097: .getDOMImplementation();
098:
099: // Create an instance of org.w3c.dom.Document
100: o = domImpl.createDocument(null, "svg", null);
101: }
102:
103: return o;
104: }
105:
106: /**
107: * creates a graphic context for the passed target considering the passed mime type
108: *
109: * @param mimeType
110: * mime type of the graphic (target)
111: * @param target
112: * object to render to.
113: *
114: * @return graphic context of the target
115: */
116: public static synchronized Graphics createGraphicContext(
117: String mimeType, Object target) {
118: // to avoid errors:
119: mimeType = mimeType.toLowerCase();
120:
121: Graphics g = null;
122:
123: if (mimeType.equals("image/jpg")
124: || mimeType.equals("image/jpeg")
125: || mimeType.equals("image/bmp")
126: || mimeType.equals("image/tif")
127: || mimeType.equals("image/tiff")
128: || mimeType.equals("image/gif")
129: || mimeType.equals("image/png")) {
130: g = ((BufferedImage) target).getGraphics();
131: } else if (mimeType.equals("image/svg+xml")
132: || mimeType.equals("image/svg xml")) {
133: // Create an instance of the SVG Generator
134: g = new SVGGraphics2D((Document) target);
135: }
136:
137: return g;
138: }
139: }
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