Author: yegor Date: Sun May 6 08:35:39 2007 New Revision: 535623 URL: http://svn.apache.org/viewvc?view=rev&rev=535623 Log: HSSF docs updated: added a note on using HSSFSheet.autoSizeColumn in headless mode and added a note on how to read images from a workbook
Modified: jakarta/poi/trunk/src/documentation/content/xdocs/hssf/quick-guide.xml Modified: jakarta/poi/trunk/src/documentation/content/xdocs/hssf/quick-guide.xml URL: http://svn.apache.org/viewvc/jakarta/poi/trunk/src/documentation/content/xdocs/hssf/quick-guide.xml?view=diff&rev=535623&r1=535622&r2=535623 ============================================================================== --- jakarta/poi/trunk/src/documentation/content/xdocs/hssf/quick-guide.xml (original) +++ jakarta/poi/trunk/src/documentation/content/xdocs/hssf/quick-guide.xml Sun May 6 08:35:39 2007 @@ -975,8 +975,7 @@ <li>DIB</li> </ul> <p> - It is not currently possible to read existing images and it - should be noted that any existing drawings may be erased + It should be noted that any existing drawings may be erased once you add a image to a sheet. </p> <source> @@ -988,7 +987,23 @@ anchor = new HSSFClientAnchor(0,0,0,255,(short)2,2,(short)4,7); anchor.setAnchorType( 2 ); patriarch.createPicture(anchor, loadPicture( "src/resources/logos/logoKarmokar4.png", wb )); - </source> + </source> + <p>Reading images from a workbook:</p> + <source> + HSSFWorkbook wb; + + List lst = wb.getAllPictures(); + for (Iterator it = lst.iterator(); it.hasNext(); ) { + HSSFPictureData pict = (HSSFPictureData)it.next(); + String ext = pict.suggestFileExtension(); + byte[] data = pict.getData(); + if (ext.equals("jpeg")){ + FileOutputStream out = new FileOutputStream("pict.jpg"); + out.write(data); + out.close(); + } + } + </source> </section> <anchor id="NamedRanges"/> <section> @@ -1141,7 +1156,13 @@ sheet.autoSizeColumn((short)0); //adjust width of the first column sheet.autoSizeColumn((short)1); //adjust width of the second column </source> - + <warning> + To calculate column width HSSFSheet.autoSizeColumn uses Java2D classes + that throw exception if graphical environment is not available. In case if graphical environment + is not available, you must tell Java that you are running in headless mode and + set the following system property: <code> java.awt.headless=true </code> + (either via <code>-Djava.awt.headless=true</code> startup parameter or via <code>System.setProperty("java.awt.headless", "true")</code>). + </warning> </section> </body> --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] Mailing List: http://jakarta.apache.org/site/mail2.html#poi The Apache Jakarta POI Project: http://jakarta.apache.org/poi/