Displaying dynamic image in a report

llemoux

<p>Hi all,</p><p> </p><p>I recently sent a message on the Eclipse Birt forum that remained unanswered.</p><p>As I'm stucked, I try again on this forum... </p><p> </p><p><span>I defined a report design to generate an open office document with a title and a dynamic image.<br />
I found several posts on how to render an image read from a file by providing the corresponding code in the image script 'onRender' event.</span></p><pre>importPackage(Packages.java.io);importPackage(Packages.java.lang); var file = new File("D:/mypath/test.png");var ist = new FileInputStream(file);var lengthi = file.length(); bytesa = new ByteArrayOutputStream( lengthi);var c;while((c=ist.read()) != -1){ bytesa.write(c);} ist.close();this.data = bytesa.toByteArray();</pre><p><span><span><span>It works fine but I now want to read my image from my RCP application and pass the corresponding byte array to 'onRender' as follow :</span></span></span></p><pre>this.data = reportContext.getAppContext().get("image");</pre><p><span>On the java side, I have :</span></p><pre>... // Create task to run and render the report: final IRunAndRenderTask task = engine.createRunAndRenderTask(design); // Image example... File file = new File("D:/mypath/test.png"); FileInputStream fis = null; try { fis = new FileInputStream(file); } catch (FileNotFoundException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } ByteArrayOutputStream bais = new ByteArrayOutputStream((int) file.length()); int c = -1; try { while ((c=fis.read()) != -1) bais.write(c); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } try { fis.close(); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } // Passing the image as byte array to the report task.getAppContext().put("image", bais.toByteArray());...</pre><p><span>Unfortunately, the resulting open office document doesn't contain my test image anymore <img src='http://www.eclipse.org/forums/images/smiley_icons/icon_sad.gif' alt='Posted Image' class='bbc_img' />.</span></p><p> </p><p><span>Adding some traces on the script side, the byte array seems to be correctly loaded and passed (3655 bytes which is the size of my example image</span>).</p><p> </p><p><span>Could somebody tell me what's wrong ?<br />
<br />
Kind regards,<br />
<br />
Laurent</span></p><p> </p><p> </p>

llemoux

<p>Hi again,

I replaced my onRender script by the following java event handler which now gets invoked in my rptdesign file :</p><pre class="_prettyXprint _lang-auto _linenums:0">public class BIRTImageEventHandler extends ImageEventAdapter {  @Override  public void onRender( IImageInstance image, IReportContext reportContext )      throws ScriptException  {    image.setData((byte[]) reportContext.getAppContext().get("image"));  }}</pre><p>The problem remains. Loading the image file from inside the java event handler or overriding onCreate instead of onRender also fails...
Please find attached my rptdesign file if this can help figure out what's wrong...</p><p> </p>