Source Code Cross Referenced for BufferedImageCachableRed.java in  » Graphic-Library » xmlgraphics-commons-1.2 » org » apache » xmlgraphics » image » rendered » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Graphic Library » xmlgraphics commons 1.2 » org.apache.xmlgraphics.image.rendered 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Licensed to the Apache Software Foundation (ASF) under one or more
003:         * contributor license agreements.  See the NOTICE file distributed with
004:         * this work for additional information regarding copyright ownership.
005:         * The ASF licenses this file to You under the Apache License, Version 2.0
006:         * (the "License"); you may not use this file except in compliance with
007:         * the License.  You may obtain a copy of the License at
008:         * 
009:         *      http://www.apache.org/licenses/LICENSE-2.0
010:         * 
011:         * Unless required by applicable law or agreed to in writing, software
012:         * distributed under the License is distributed on an "AS IS" BASIS,
013:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         * See the License for the specific language governing permissions and
015:         * limitations under the License.
016:         */
017:
018:        /* $Id: BufferedImageCachableRed.java 496559 2007-01-16 01:10:29Z cam $ */
019:
020:        package org.apache.xmlgraphics.image.rendered;
021:
022:        import java.awt.Rectangle;
023:        import java.awt.image.BufferedImage;
024:        import java.awt.image.Raster;
025:        import java.awt.image.WritableRaster;
026:
027:        import org.apache.xmlgraphics.image.GraphicsUtil;
028:
029:        /**
030:         * This implements CachableRed based on a BufferedImage.
031:         * You can use this to wrap a BufferedImage that you want to
032:         * appear as a CachableRed.
033:         * It essentially ignores the dependency and dirty region methods.
034:         *
035:         * @author <a href="mailto:Thomas.DeWeeese@Kodak.com">Thomas DeWeese</a>
036:         * @version $Id: BufferedImageCachableRed.java 496559 2007-01-16 01:10:29Z cam $ */
037:        public class BufferedImageCachableRed extends AbstractRed {
038:            // The bufferedImage that we wrap...
039:            BufferedImage bi;
040:
041:            /**
042:             * Construct an instance of CachableRed around a BufferedImage.
043:             */
044:            public BufferedImageCachableRed(BufferedImage bi) {
045:                super ((CachableRed) null, new Rectangle(bi.getMinX(), bi
046:                        .getMinY(), bi.getWidth(), bi.getHeight()), bi
047:                        .getColorModel(), bi.getSampleModel(), bi.getMinX(), bi
048:                        .getMinY(), null);
049:
050:                this .bi = bi;
051:            }
052:
053:            public BufferedImageCachableRed(BufferedImage bi, int xloc, int yloc) {
054:                super ((CachableRed) null, new Rectangle(xloc, yloc, bi
055:                        .getWidth(), bi.getHeight()), bi.getColorModel(), bi
056:                        .getSampleModel(), xloc, yloc, null);
057:
058:                this .bi = bi;
059:            }
060:
061:            public Rectangle getBounds() {
062:                return new Rectangle(getMinX(), getMinY(), getWidth(),
063:                        getHeight());
064:            }
065:
066:            /**
067:             * fetch the bufferedImage from this node.
068:             */
069:            public BufferedImage getBufferedImage() {
070:                return bi;
071:            }
072:
073:            public Object getProperty(String name) {
074:                return bi.getProperty(name);
075:            }
076:
077:            public String[] getPropertyNames() {
078:                return bi.getPropertyNames();
079:            }
080:
081:            public Raster getTile(int tileX, int tileY) {
082:                return bi.getTile(tileX, tileY);
083:            }
084:
085:            public Raster getData() {
086:                Raster r = bi.getData();
087:                return r.createTranslatedChild(getMinX(), getMinY());
088:            }
089:
090:            public Raster getData(Rectangle rect) {
091:                Rectangle r = (Rectangle) rect.clone();
092:
093:                if (!r.intersects(getBounds()))
094:                    return null;
095:                r = r.intersection(getBounds());
096:                r.translate(-getMinX(), -getMinY());
097:
098:                Raster ret = bi.getData(r);
099:                return ret.createTranslatedChild(ret.getMinX() + getMinX(), ret
100:                        .getMinY()
101:                        + getMinY());
102:            }
103:
104:            public WritableRaster copyData(WritableRaster wr) {
105:                WritableRaster wr2 = wr.createWritableTranslatedChild(wr
106:                        .getMinX()
107:                        - getMinX(), wr.getMinY() - getMinY());
108:
109:                GraphicsUtil.copyData(bi.getRaster(), wr2);
110:
111:                /* This was the original code. This is _bad_ since it causes a
112:                 * multiply and divide of the alpha channel to do the draw
113:                 * operation.  I believe that at some point I switched to
114:                 * drawImage in order to avoid some issues with
115:                 * BufferedImage's copyData implementation but I can't
116:                 * reproduce them now. Anyway I'm now using GraphicsUtil which
117:                 * should generally be as fast if not faster...
118:                 */
119:                /*
120:                  BufferedImage dest;
121:                 dest = new BufferedImage(bi.getColorModel(),
122:                                          wr.createWritableTranslatedChild(0,0),
123:                                          bi.getColorModel().isAlphaPremultiplied(),
124:                                          null);
125:                 java.awt.Graphics2D g2d = dest.createGraphics();
126:                 g2d.drawImage(bi, null, getMinX()-wr.getMinX(),
127:                               getMinY()-wr.getMinY());
128:                 g2d.dispose();
129:                 */
130:                return wr;
131:            }
132:        }
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