Examples of org.jfree.util.WaitingImageObserver

org.jfree.util.WaitingImageObserver
This image observer blocks until the image is completely loaded. AWT defers the loading of images until they are painted on a graphic. While printing reports it is not very nice, not to know whether a image was completely loaded, so this observer forces the loading of the image until a final state (either ALLBITS, ABORT or ERROR) is reached. @author Thomas Morgner

        if ((new File(imagePath)).exists()) {
          image = toolkit.getImage(imagePath);
        } else {
          image = toolkit.getImage(new URL(imagePath));
        }
        WaitingImageObserver obs = new WaitingImageObserver(image);
        obs.waitImageLoaded();
        SetupInfo.setProperty(SetupInfo.REPORTIMAGE, imagePath);
        SetupInfo.store();
        report1.setProperty("iconheader", image);
        report1.setPropertyMarked("iconheader", true);
      } catch (Exception e) {

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          if ((new File(backgroundFilePath)).exists()) {
            image = toolkit.getImage(backgroundFilePath);
          } else {
            image = toolkit.getImage(new URL(backgroundFilePath));
          }
          WaitingImageObserver obs = new WaitingImageObserver(image);
          obs.waitImageLoaded();
          plot.setBackgroundImage(image);
          plot.setBackgroundPaint(Color.white);
          plot.setBackgroundAlpha(0.6f);
          plot.setForegroundAlpha(0.75f);
        } catch (Exception e) {

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    }


    private OfficeImage produceFromImage(final Image image)
    {
        // quick caching ... use a weak list ...
        final WaitingImageObserver obs = new WaitingImageObserver(image);
        obs.waitImageLoaded();


        final PngEncoder encoder = new PngEncoder(image, PngEncoder.ENCODE_ALPHA, PngEncoder.FILTER_NONE, 5);
        final byte[] data = encoder.pngEncode();
        return produceFromByteArray(data);
    }

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  }


  private OfficeImage produceFromImage(final Image image)
  {
    // quick caching ... use a weak list ...
    final WaitingImageObserver obs = new WaitingImageObserver(image);
    obs.waitImageLoaded();


    final PngEncoder encoder = new PngEncoder(image, PngEncoder.ENCODE_ALPHA, PngEncoder.FILTER_NONE, 5);
    final byte[] data = encoder.pngEncode();
    return produceFromByteArray(data);
  }

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  private String writeImage(final Image image)
      throws ContentIOException, IOException, URLRewriteException
  {
    // encode the image into a PNG
    // quick caching ... use a weak list ...
    final WaitingImageObserver obs = new WaitingImageObserver(image);
    obs.waitImageLoaded();


    final PngEncoder encoder = new PngEncoder(image,
        PngEncoder.ENCODE_ALPHA, PngEncoder.FILTER_NONE, 5);
    final byte[] data = encoder.pngEncode();

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  private RenderableReplacedContent createImage(final Image image,
                                                final ResourceKey source,
                                                final LayoutContext context)
  {
    final WaitingImageObserver wobs = new WaitingImageObserver(image);
    wobs.waitImageLoaded();
    if (wobs.isError())
    {
      return null;
    }


    final CSSValue widthVal = context.getValue(BoxStyleKeys.WIDTH);

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  private String writeImage(final Image image)
      throws ContentIOException, IOException, URLRewriteException
  {
    // encode the image into a PNG
    // quick caching ... use a weak list ...
    final WaitingImageObserver obs = new WaitingImageObserver(image);
    obs.waitImageLoaded();


    final PngEncoder encoder = new PngEncoder(image,
        PngEncoder.ENCODE_ALPHA, PngEncoder.FILTER_NONE, 5);
    final byte[] data = encoder.pngEncode();

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  private RenderableReplacedContent createImage(Image image,
                                                ResourceKey source,
                                                LayoutContext context)
  {
    final WaitingImageObserver wobs = new WaitingImageObserver(image);
    wobs.waitImageLoaded();
    if (wobs.isError())
    {
      return null;
    }


    final CSSValue widthVal = context.getValue(BoxStyleKeys.WIDTH);

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