Mercurial > dive4elements > river
comparison artifacts/src/main/java/org/dive4elements/river/jfree/AreaFillPattern.java @ 8910:d9c89651bd67
Area chart layers may now have an 'arebgpattern'. Real pattern yet to be defined.
| author | gernotbelger |
|---|---|
| date | Thu, 22 Feb 2018 18:46:37 +0100 |
| parents | |
| children | 924cd9943337 |
comparison
equal
deleted
inserted
replaced
| 8909:31dff17c6828 | 8910:d9c89651bd67 |
|---|---|
| 1 /** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde | |
| 2 * Software engineering by | |
| 3 * Björnsen Beratende Ingenieure GmbH | |
| 4 * Dr. Schumacher Ingenieurbüro für Wasser und Umwelt | |
| 5 * | |
| 6 * This file is Free Software under the GNU AGPL (>=v3) | |
| 7 * and comes with ABSOLUTELY NO WARRANTY! Check out the | |
| 8 * documentation coming with Dive4Elements River for details. | |
| 9 */ | |
| 10 package org.dive4elements.river.jfree; | |
| 11 | |
| 12 import java.awt.Color; | |
| 13 import java.awt.image.BufferedImage; | |
| 14 import java.awt.image.BufferedImageOp; | |
| 15 import java.awt.image.LookupOp; | |
| 16 import java.io.IOException; | |
| 17 | |
| 18 import javax.imageio.ImageIO; | |
| 19 | |
| 20 import org.apache.log4j.Logger; | |
| 21 | |
| 22 /** | |
| 23 * Fill patterns for area styles. | |
| 24 * REMARK: if this enum is changed, probably the ui in StyleEditorWindow must be changed too | |
| 25 * | |
| 26 * @author Gernot Belger | |
| 27 */ | |
| 28 public enum AreaFillPattern { | |
| 29 | |
| 30 pattern1("/images/areapatterns/pattern1.png"); | |
| 31 | |
| 32 private static Logger log = Logger.getLogger(AreaFillPattern.class); | |
| 33 | |
| 34 private static final BufferedImage MISSING_IMAGE = new BufferedImage(16, 16, BufferedImage.TYPE_INT_RGB); | |
| 35 | |
| 36 private final String imagePath; | |
| 37 | |
| 38 private BufferedImage image = null; | |
| 39 | |
| 40 AreaFillPattern(final String imagePath) { | |
| 41 this.imagePath = imagePath; | |
| 42 } | |
| 43 | |
| 44 public BufferedImage getImage(final Color color) { | |
| 45 | |
| 46 if (this.image == null) | |
| 47 this.image = loadImage(); | |
| 48 | |
| 49 if (color == null) | |
| 50 return this.image; | |
| 51 | |
| 52 /* | |
| 53 * apply color and transparency, the .png must be encoded as 32bit images (rgba), with only black as non transparent | |
| 54 * color | |
| 55 */ | |
| 56 final int numComponents = this.image.getColorModel().getNumComponents(); | |
| 57 if (numComponents != 4) { | |
| 58 log.warn(String.format("Pattern image must be a 32bit image (rgba): %s", this.imagePath)); | |
| 59 return this.image; | |
| 60 } | |
| 61 | |
| 62 final BufferedImageOp lookup = new LookupOp(new ColorMapper(Color.black, color), null); | |
| 63 return lookup.filter(this.image, null); | |
| 64 } | |
| 65 | |
| 66 private BufferedImage loadImage() { | |
| 67 try { | |
| 68 return ImageIO.read(getClass().getResource(this.imagePath)); | |
| 69 } | |
| 70 catch (final IOException e) { | |
| 71 log.error(String.format("failed ot load pattern: %s", this.imagePath), e); | |
| 72 return MISSING_IMAGE; | |
| 73 } | |
| 74 } | |
| 75 } |