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annotate artifacts/src/main/java/org/dive4elements/river/jfree/AreaFillPattern.java @ 8913:924cd9943337

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Configured some real fill patterns
author gernotbelger
date Mon, 26 Feb 2018 18:10:03 +0100
parents d9c89651bd67
children
rev   line source
8910
d9c89651bd67 Area chart layers may now have an 'arebgpattern'. Real pattern yet to be defined.
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1 /** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by
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3 * Björnsen Beratende Ingenieure GmbH
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4 * Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
d9c89651bd67 Area chart layers may now have an 'arebgpattern'. Real pattern yet to be defined.
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5 *
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6 * This file is Free Software under the GNU AGPL (>=v3)
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7 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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8 * documentation coming with Dive4Elements River for details.
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9 */
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10 package org.dive4elements.river.jfree;
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11
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12 import java.awt.Color;
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13 import java.awt.image.BufferedImage;
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14 import java.awt.image.BufferedImageOp;
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15 import java.awt.image.LookupOp;
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16 import java.io.IOException;
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17
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18 import javax.imageio.ImageIO;
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19
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20 import org.apache.log4j.Logger;
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21
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22 /**
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23 * Fill patterns for area styles.
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24 * REMARK: if this enum is changed, probably the ui in StyleEditorWindow must be changed too
d9c89651bd67 Area chart layers may now have an 'arebgpattern'. Real pattern yet to be defined.
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25 *
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26 * @author Gernot Belger
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27 */
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28 public enum AreaFillPattern {
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29
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30 patternFill("/images/areapatterns/patternFill.png"), //
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31 patternPoints("/images/areapatterns/patternPoints.png"), //
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32 paternCross("/images/areapatterns/paternCross.png"), //
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33 patternDagonalLeft("/images/areapatterns/patternDagonalLeft.png"), //
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34 patternDiagonalRight("/images/areapatterns/patternDiagonalRight.png");
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35
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36 private static Logger log = Logger.getLogger(AreaFillPattern.class);
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37
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38 private static final BufferedImage MISSING_IMAGE = new BufferedImage(16, 16, BufferedImage.TYPE_INT_RGB);
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39
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40 private final String imagePath;
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41
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42 private BufferedImage image = null;
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43
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44 AreaFillPattern(final String imagePath) {
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45 this.imagePath = imagePath;
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46 }
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47
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48 public BufferedImage getImage(final Color color) {
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49
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50 if (this.image == null)
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51 this.image = loadImage();
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52
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53 if (color == null)
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54 return this.image;
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55
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56 /*
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57 * apply color and transparency, the .png must be encoded as 32bit images (rgba), with only black as non transparent
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58 * color
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59 */
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60 final int numComponents = this.image.getColorModel().getNumComponents();
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61 if (numComponents != 4) {
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62 log.warn(String.format("Pattern image must be a 32bit image (rgba): %s", this.imagePath));
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63 return this.image;
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64 }
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65
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66 final BufferedImageOp lookup = new LookupOp(new ColorMapper(Color.black, color), null);
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67 return lookup.filter(this.image, null);
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68 }
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69
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70 private BufferedImage loadImage() {
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71 try {
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72 return ImageIO.read(getClass().getResource(this.imagePath));
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73 }
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74 catch (final IOException e) {
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75 log.error(String.format("failed ot load pattern: %s", this.imagePath), e);
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76 return MISSING_IMAGE;
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77 }
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78 }
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79 }
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