Mercurial > dive4elements > gnv-client
comparison gnv-artifacts/src/main/java/de/intevation/gnv/exports/ChartExportHelper.java @ 617:3d13fa281a7e
Added new ouput mode: histogram.
gnv-artifacts/trunk@688 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Mon, 15 Feb 2010 11:44:01 +0000 |
| parents | a88e15972c72 |
| children | 65f09139e9b3 |
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| 616:93978859fa9e | 617:3d13fa281a7e |
|---|---|
| 7 import com.lowagie.text.pdf.PdfContentByte; | 7 import com.lowagie.text.pdf.PdfContentByte; |
| 8 import com.lowagie.text.pdf.PdfTemplate; | 8 import com.lowagie.text.pdf.PdfTemplate; |
| 9 import com.lowagie.text.pdf.PdfWriter; | 9 import com.lowagie.text.pdf.PdfWriter; |
| 10 | 10 |
| 11 import java.awt.Transparency; | 11 import java.awt.Transparency; |
| 12 import java.awt.Graphics; | |
| 12 import java.awt.Graphics2D; | 13 import java.awt.Graphics2D; |
| 14 import java.awt.geom.Point2D; | |
| 13 import java.awt.geom.Rectangle2D; | 15 import java.awt.geom.Rectangle2D; |
| 14 import java.awt.geom.Rectangle2D.Double; | 16 import java.awt.geom.Rectangle2D.Double; |
| 17 import java.awt.image.BufferedImage; | |
| 15 import java.io.OutputStream; | 18 import java.io.OutputStream; |
| 16 import java.io.OutputStreamWriter; | 19 import java.io.OutputStreamWriter; |
| 17 import java.io.IOException; | 20 import java.io.IOException; |
| 18 import java.io.UnsupportedEncodingException; | 21 import java.io.UnsupportedEncodingException; |
| 19 import javax.imageio.ImageIO; | 22 import javax.imageio.ImageIO; |
| 23 import org.apache.log4j.Logger; | 26 import org.apache.log4j.Logger; |
| 24 | 27 |
| 25 import org.jfree.chart.JFreeChart; | 28 import org.jfree.chart.JFreeChart; |
| 26 | 29 |
| 27 import de.intevation.artifactdatabase.XMLUtils; | 30 import de.intevation.artifactdatabase.XMLUtils; |
| 31 import de.intevation.gnv.chart.Chart; | |
| 28 | 32 |
| 29 | 33 |
| 30 /** | 34 /** |
| 31 * @author Ingo Weinzierl <ingo.weinzierl@intevation.de> | 35 * @author Ingo Weinzierl <ingo.weinzierl@intevation.de> |
| 32 */ | 36 */ |
| 53 width, height, Transparency.BITMASK, null | 57 width, height, Transparency.BITMASK, null |
| 54 ), | 58 ), |
| 55 format, | 59 format, |
| 56 out | 60 out |
| 57 ); | 61 ); |
| 62 } | |
| 63 | |
| 64 | |
| 65 public static void exportHistograms( | |
| 66 OutputStream out, | |
| 67 Chart[] histograms, | |
| 68 String format, | |
| 69 int width, | |
| 70 int height) | |
| 71 throws IOException | |
| 72 { | |
| 73 log.info("export histograms"); | |
| 74 | |
| 75 int size = histograms.length; | |
| 76 BufferedImage image = new BufferedImage( | |
| 77 width, height*size, BufferedImage.TYPE_INT_RGB); | |
| 78 Graphics2D g = image.createGraphics(); | |
| 79 | |
| 80 for (int i = 0; i < size; i++) { | |
| 81 JFreeChart chart = histograms[i].generateChart(); | |
| 82 chart.draw(g, new Rectangle2D.Double(0.0D, i*height, width, height)); | |
| 83 } | |
| 84 g.finalize(); | |
| 85 | |
| 86 ImageIO.write(image, format, out); | |
| 58 } | 87 } |
| 59 | 88 |
| 60 | 89 |
| 61 public static void exportSVG( | 90 public static void exportSVG( |
| 62 OutputStream out, | 91 OutputStream out, |