Mercurial > dive4elements > gnv-client
comparison gnv-artifacts/src/main/java/de/intevation/gnv/exports/ChartExportHelper.java @ 318:5f2820e821e0
Implemented a helper class for exporting charts. Adapted code.
gnv-artifacts/trunk@376 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Thu, 26 Nov 2009 16:10:47 +0000 |
| parents | |
| children | 18302372703f |
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| 317:342cd58291f1 | 318:5f2820e821e0 |
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| 1 package de.intevation.gnv.exports; | |
| 2 | |
| 3 import java.awt.Transparency; | |
| 4 import java.awt.image.BufferedImage; | |
| 5 import java.io.OutputStream; | |
| 6 import java.io.IOException; | |
| 7 import javax.imageio.ImageIO; | |
| 8 | |
| 9 import org.apache.log4j.Logger; | |
| 10 | |
| 11 import org.jfree.chart.JFreeChart; | |
| 12 | |
| 13 /** | |
| 14 * @author Ingo Weinzierl <ingo.weinzierl@intevation.de> | |
| 15 */ | |
| 16 public class ChartExportHelper { | |
| 17 | |
| 18 private static final String DEFAULT_PAGE_SIZE = "A4"; | |
| 19 | |
| 20 private static Logger log = Logger.getLogger(ChartExportHelper.class); | |
| 21 | |
| 22 public static void exportImage( | |
| 23 OutputStream out, | |
| 24 JFreeChart chart, | |
| 25 String format, | |
| 26 int width, | |
| 27 int height | |
| 28 ) | |
| 29 throws IOException | |
| 30 { | |
| 31 log.info("export chart as png"); | |
| 32 | |
| 33 ImageIO.write( | |
| 34 chart.createBufferedImage( | |
| 35 width, height, Transparency.BITMASK, null | |
| 36 ), | |
| 37 format, | |
| 38 out | |
| 39 ); | |
| 40 } | |
| 41 | |
| 42 public static void exportSVG() { | |
| 43 log.info("export chart as svg (not implemented yet)"); | |
| 44 } | |
| 45 | |
| 46 public static void exportPDF() { | |
| 47 log.info("export chart as pdf (not implemented yet)"); | |
| 48 } | |
| 49 } |