Mercurial > dive4elements > gnv-client
changeset 320:18302372703f
Implemented pdf export of charts.
gnv-artifacts/trunk@381 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Mon, 30 Nov 2009 09:51:59 +0000 |
| parents | 251f16a083f8 |
| children | a4376fd23f99 |
| files | gnv-artifacts/ChangeLog gnv-artifacts/pom.xml gnv-artifacts/src/main/java/de/intevation/gnv/exports/ChartExportHelper.java gnv-artifacts/src/main/java/de/intevation/gnv/transition/timeseries/TimeSeriesOutputTransition.java |
| diffstat | 4 files changed, 165 insertions(+), 6 deletions(-) [+] |
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--- a/gnv-artifacts/ChangeLog Fri Nov 27 13:00:00 2009 +0000 +++ b/gnv-artifacts/ChangeLog Mon Nov 30 09:51:59 2009 +0000 @@ -1,3 +1,17 @@ +2009-11-30 Ingo Weinzierl <ingo.weinzierl@intevation.de> + + * pom.xm: Added iText 2.1.7 dependency (to create pdf's). + + * src/main/java/de/intevation/gnv/exports/ChartExportHelper.java: + Implemented chart export to pdf using iText library. The chart fills the + complete page. A boolean system property "export.pdf.landscape" can be + used to adjust the page orientation (portrait or landscape, default is + landscape). + + * src/main/java/de/intevation/gnv/transition/timeseries/TimeSeriesOutputTransition.java: + Added method for exporting chart to pdf. Calls the new method of + ChartExportHelper. + 2009-11-27 Tim Englich <tim.englich@intevation.de> * src/test/java/de/intevation/gnv/artifacts/GNVArtifactsTestCase.java
--- a/gnv-artifacts/pom.xml Fri Nov 27 13:00:00 2009 +0000 +++ b/gnv-artifacts/pom.xml Mon Nov 30 09:51:59 2009 +0000 @@ -79,6 +79,11 @@ <version>1.0.15</version> </dependency> <dependency> + <groupId>com.lowagie</groupId> + <artifactId>itext</artifactId> + <version>2.1.7</version> + </dependency> + <dependency> <groupId>net.sf.opencsv</groupId> <artifactId>opencsv</artifactId> <version>2.0</version>
--- a/gnv-artifacts/src/main/java/de/intevation/gnv/exports/ChartExportHelper.java Fri Nov 27 13:00:00 2009 +0000 +++ b/gnv-artifacts/src/main/java/de/intevation/gnv/exports/ChartExportHelper.java Mon Nov 30 09:51:59 2009 +0000 @@ -1,7 +1,17 @@ package de.intevation.gnv.exports; +import com.lowagie.text.Document; +import com.lowagie.text.DocumentException; +import com.lowagie.text.PageSize; +import com.lowagie.text.Rectangle; +import com.lowagie.text.pdf.PdfContentByte; +import com.lowagie.text.pdf.PdfTemplate; +import com.lowagie.text.pdf.PdfWriter; + import java.awt.Transparency; -import java.awt.image.BufferedImage; +import java.awt.Graphics2D; +import java.awt.geom.Rectangle2D; +import java.awt.geom.Rectangle2D.Double; import java.io.OutputStream; import java.io.IOException; import javax.imageio.ImageIO; @@ -10,12 +20,13 @@ import org.jfree.chart.JFreeChart; + /** * @author Ingo Weinzierl <ingo.weinzierl@intevation.de> */ public class ChartExportHelper { - private static final String DEFAULT_PAGE_SIZE = "A4"; + private static final String DEFAULT_PAGE_SIZE = "A4"; private static Logger log = Logger.getLogger(ChartExportHelper.class); @@ -39,11 +50,73 @@ ); } + public static void exportSVG() { log.info("export chart as svg (not implemented yet)"); } - public static void exportPDF() { - log.info("export chart as pdf (not implemented yet)"); + + public static void exportPDF( + OutputStream out, + JFreeChart chart, + String pageFormat, + boolean landscape, + float marginLeft, + float marginRight, + float marginTop, + float marginBottom + ) { + log.info("export chart as pdf."); + + if (pageFormat == null) + pageFormat = DEFAULT_PAGE_SIZE; + + Rectangle page = PageSize.getRectangle(pageFormat); + int pageWidth = (int) (page.getRight(marginRight) - page.getLeft(marginLeft)); + int pageHeight = (int) (page.getTop(marginTop) - page.getBottom(marginBottom)); + + Document document = null; + if (landscape) { + document = new Document(page.rotate()); + log.debug("Create landscape pdf."); + } + else + document = new Document(page); + + try { + PdfWriter writer = PdfWriter.getInstance(document, out); + + document.addSubject(chart.getTitle().getText()); + document.addCreationDate(); + document.open(); + + PdfContentByte content = writer.getDirectContent(); + + int width = 0; + int height = 0; + if (landscape) { + width = pageHeight; + height = pageWidth; + } + else { + width = pageWidth; + height = pageHeight; + } + + PdfTemplate template = content.createTemplate(width, height); + Graphics2D graphics = template.createGraphics(width, height); + Rectangle2D area = new Rectangle2D.Double(0.0D, 0.0D,width,height); + + chart.draw(graphics, area); + graphics.dispose(); + content.addTemplate(template, marginLeft, marginBottom); + } + catch (DocumentException de) { + log.error("Error while exporting chart to pdf.", de); + } + finally { + document.close(); + } } } +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
--- a/gnv-artifacts/src/main/java/de/intevation/gnv/transition/timeseries/TimeSeriesOutputTransition.java Fri Nov 27 13:00:00 2009 +0000 +++ b/gnv-artifacts/src/main/java/de/intevation/gnv/transition/timeseries/TimeSeriesOutputTransition.java Mon Nov 30 09:51:59 2009 +0000 @@ -68,9 +68,12 @@ */ public class TimeSeriesOutputTransition extends OutputTransitionBase { - protected static final boolean CACHE_CHART = + protected static final boolean CACHE_CHART = Boolean.parseBoolean(System.getProperty("cache.chart", "false")); + protected static final boolean PDF_FORMAT_LANDSCAPE = + Boolean.parseBoolean(System.getProperty("export.pdf.landscape","true")); + protected static final String[] IMG_EXPORT_FORMAT = { "PNG", "JPEG", "GIF" }; @@ -241,6 +244,34 @@ chartHeight ); } + else if (outputMode.equalsIgnoreCase("pdf")) { + log.debug("Output mode == pdf"); + + Locale[] serverLocales = + RessourceFactory.getInstance().getLocales(); + Locale locale = + callMeta.getPreferredLocale(serverLocales); + + log.debug( + "Best locale - regarding intersection of server and " + + "browser locales - is " + locale.toString() + ); + + createPDF( + outputStream, + getParameters(uuid), + getMeasurements(uuid), + getDates(uuid), + new ChartLabels( + this.getFisName(callMeta.getLanguages()) + + " "+ getSelectedFeatureName(uuid), + this.domainLable), + uuid, + "A4", + true, + locale + ); + } else if (outputMode.equalsIgnoreCase("csv")) { log.debug("CSV-File will be generated."); Collection<Result> chartResult = this.getChartResult(uuid); @@ -449,6 +480,42 @@ } + protected void createPDF( + OutputStream outputStream, + Collection parameters, + Collection measurements, + Collection dates, + ChartLabels chartLables, + String uuid, + String exportFormat, + boolean landscape, + Locale locale + ) { + Chart chart = getChart( + chartLables, + parameters, + measurements, + dates, + getChartResult(uuid), + locale, + uuid + ); + + if (chart == null) { + log.error("Could not initialize chart."); + return; + } + + ChartExportHelper.exportPDF( + outputStream, + chart.generateChart(), + "A4", + PDF_FORMAT_LANDSCAPE, + 50F, 50F, 50F, 50F + ); + } + + protected Chart getChart( ChartLabels chartLables, Collection parameters, @@ -607,4 +674,4 @@ return null; } } -// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :