Mercurial > dive4elements > gnv-client
comparison gnv-artifacts/src/main/java/de/intevation/gnv/exports/ChartExportHelper.java @ 640:e5f1e868ee3e
Implementedr histogram pdf export.
gnv-artifacts/trunk@726 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Wed, 03 Mar 2010 13:44:15 +0000 |
| parents | a94ed2755480 |
| children | a0e63136954e |
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| 639:a94ed2755480 | 640:e5f1e868ee3e |
|---|---|
| 216 } | 216 } |
| 217 finally { | 217 finally { |
| 218 document.close(); | 218 document.close(); |
| 219 } | 219 } |
| 220 } | 220 } |
| 221 | |
| 222 | |
| 223 public static void exportHistogramsAsPDF( | |
| 224 OutputStream out, | |
| 225 Chart[] histograms, | |
| 226 String pageFormat, | |
| 227 boolean landscape, | |
| 228 float marginLeft, | |
| 229 float marginRight, | |
| 230 float marginTop, | |
| 231 float marginBottom | |
| 232 ) { | |
| 233 log.info("export histogram as pdf."); | |
| 234 | |
| 235 if (pageFormat == null) | |
| 236 pageFormat = DEFAULT_PAGE_SIZE; | |
| 237 | |
| 238 Rectangle page = PageSize.getRectangle(pageFormat); | |
| 239 int pageWidth = | |
| 240 (int) (page.getRight(marginRight) - page.getLeft(marginLeft)); | |
| 241 int pageHeight = | |
| 242 (int) (page.getTop(marginTop) - page.getBottom(marginBottom)); | |
| 243 | |
| 244 Document document = null; | |
| 245 if (landscape) { | |
| 246 document = new Document(page.rotate()); | |
| 247 log.debug("Create landscape pdf."); | |
| 248 } | |
| 249 else | |
| 250 document = new Document(page); | |
| 251 | |
| 252 try { | |
| 253 PdfWriter writer = PdfWriter.getInstance(document, out); | |
| 254 | |
| 255 document.addCreationDate(); | |
| 256 document.open(); | |
| 257 | |
| 258 PdfContentByte content = writer.getDirectContent(); | |
| 259 | |
| 260 int width = 0; | |
| 261 int height = 0; | |
| 262 if (landscape) { | |
| 263 width = pageHeight; | |
| 264 height = pageWidth; | |
| 265 } | |
| 266 else { | |
| 267 width = pageWidth; | |
| 268 height = pageHeight; | |
| 269 } | |
| 270 | |
| 271 int size = histograms.length; | |
| 272 for (int i = 0; i < size; i++) { | |
| 273 if (i > 0) { | |
| 274 document.newPage(); | |
| 275 } | |
| 276 | |
| 277 JFreeChart chart = histograms[i].generateChart(); | |
| 278 PdfTemplate template = content.createTemplate(width, height); | |
| 279 Graphics2D graphics = template.createGraphics(width, height); | |
| 280 Rectangle2D area = new Rectangle2D.Double( | |
| 281 0.0D, 0.0D,width,height); | |
| 282 | |
| 283 chart.draw(graphics, area); | |
| 284 graphics.dispose(); | |
| 285 content.addTemplate(template, marginLeft, marginBottom); | |
| 286 } | |
| 287 } | |
| 288 catch (DocumentException de) { | |
| 289 log.error("Error while exporting chart to pdf.", de); | |
| 290 } | |
| 291 finally { | |
| 292 document.close(); | |
| 293 } | |
| 294 } | |
| 221 } | 295 } |
| 222 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : | 296 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |