Java Code Examples for java.awt.MediaTracker#isErrorID()

/**
 * Ensures that Images is completely loaded
 */
public static boolean setImage(Image im, JComponent c) {
    boolean b = true;
    MediaTracker mt = new MediaTracker(c);
    mt.addImage(im, 0);
    try {
        mt.waitForID(0);
    } catch (InterruptedException e) {
        System.out.println("Error while image loading."); //$NON-NLS-1$
        b = false;
    }
    if (mt.isErrorID(0)) {
        System.out.println("Could Not load Image."); //$NON-NLS-1$
        b = false;
    }
    return b;
}
 

/**
    * Loading an image via a MediaTracker
    * 
    * @param image
    * @throws InterruptedException
    * @throws IOException
    */
   public static void load(Image image) throws InterruptedException,
    IOException {
MediaTracker tracker = new MediaTracker(new Label()); // any component
						      // will do
tracker.addImage(image, 0);
tracker.waitForID(0);
if (tracker.isErrorID(0))
    throw new IOException("error loading image");
   }
 

@Override
public Image readImage(byte[] bytes) throws JRException
{
	Image image = Toolkit.getDefaultToolkit().createImage(bytes);

	MediaTracker tracker = new MediaTracker(new Panel());
	tracker.addImage(image, 0);
	try
	{
		tracker.waitForID(0);
	}
	catch (Exception e)
	{
		//image = null;
		throw new JRException(e);
	}

	if(tracker.isErrorID(0)) 
	{
		throw 
		new JRException(
			EXCEPTION_MESSAGE_KEY_IMAGE_READ_FAILED,
			(Object[])null);
	}

	return image;
}
 

public Image getImage(String imageSource) {
  try {
    URL sourceURL = new URL(imageSource);
    if (sourceURL.getProtocol().equals("file") &&
        !(new File(sourceURL.getPath())).exists()) {
      ErrorDialog.showError(this, "File not found: " + imageSource);
      return null;
    }
    
    Image other = Toolkit.getDefaultToolkit().createImage(sourceURL);
    MediaTracker tracker = new MediaTracker(this);
    int imageId = 0;
    tracker.addImage(other, imageId);
    
    tracker.waitForID(0);
    boolean isError = tracker.isErrorID(imageId);
    if (isError) {
      ErrorDialog.showError(this, 
          "There were problems reading the background image: " + 
              imageSource);
      return null;
    }
    
    return other;
  } catch (IOException e) {
    throw new OntopiaRuntimeException(e);
  } catch (InterruptedException ie) {
    throw new OntopiaRuntimeException("InterruptedException caused during" +
        " wallpaper_image error check.", ie);
  }
}
 

/**
    * Loading an image via a MediaTracker
    * 
    * @param image
    * @throws InterruptedException
    * @throws IOException
    */
   public static void load(Image image) throws InterruptedException,
    IOException {
MediaTracker tracker = new MediaTracker(new Label()); // any component
						      // will do
tracker.addImage(image, 0);
tracker.waitForID(0);
if (tracker.isErrorID(0))
    throw new IOException("error loading image");
   }
 

private void setImages() {
    UnitDisplaySkinSpecification udSpec = SkinXMLHandler
            .getUnitDisplaySkin();
    MediaTracker mt = new MediaTracker(this);
    Toolkit tk = getToolkit();
    idleImage[0] = tk.getImage(new MegaMekFile(Configuration.widgetsDir(), udSpec.getGeneralTabIdle()).toString());
    idleImage[1] = tk.getImage(new MegaMekFile(Configuration.widgetsDir(), udSpec.getPilotTabIdle()).toString());
    idleImage[2] = tk.getImage(new MegaMekFile(Configuration.widgetsDir(), udSpec.getArmorTabIdle()).toString());
    idleImage[3] = tk.getImage(new MegaMekFile(Configuration.widgetsDir(), udSpec.getSystemsTabIdle()).toString());
    idleImage[4] = tk.getImage(new MegaMekFile(Configuration.widgetsDir(), udSpec.getWeaponsTabIdle()).toString());
    idleImage[5] = tk.getImage(new MegaMekFile(Configuration.widgetsDir(), udSpec.getExtrasTabIdle()).toString());
    activeImage[0] = tk.getImage(new MegaMekFile(Configuration.widgetsDir(), udSpec.getGeneralTabActive()).toString());
    activeImage[1] = tk.getImage(new MegaMekFile(Configuration.widgetsDir(), udSpec.getPilotTabActive()).toString());
    activeImage[2] = tk.getImage(new MegaMekFile(Configuration.widgetsDir(), udSpec.getArmorTabActive()).toString());
    activeImage[3] = tk.getImage(new MegaMekFile(Configuration.widgetsDir(), udSpec.getSystemsTabActive()).toString());
    activeImage[4] = tk.getImage(new MegaMekFile(Configuration.widgetsDir(), udSpec.getWeaponsTabActive()).toString());
    activeImage[5] = tk.getImage(new MegaMekFile(Configuration.widgetsDir(), udSpec.getExtraTabActive()).toString());
    idleCorner = tk.getImage(new MegaMekFile(Configuration.widgetsDir(), udSpec.getCornerIdle()).toString());
    selectedCorner = tk.getImage(new MegaMekFile(Configuration.widgetsDir(), udSpec.getCornerActive()).toString());

    // If we don't flush, we might have stale data
    idleCorner.flush();
    selectedCorner.flush();

    for (int i = 0; i < 6; i++) {
        // If we don't flush, we might have stale data
        idleImage[i].flush();
        activeImage[i].flush();
        mt.addImage(idleImage[i], 0);
        mt.addImage(activeImage[i], 0);
    }
    mt.addImage(idleCorner, 0);
    mt.addImage(selectedCorner, 0);
    try {
        mt.waitForAll();
    } catch (InterruptedException e) {
        System.out.println("TabStrip: Error while image loading."); //$NON-NLS-1$
    }
    if (mt.isErrorID(0)) {
        System.out.println("TabStrip: Could Not load Image."); //$NON-NLS-1$
    }

    for (int i = 0; i < 6; i++) {
        if (idleImage[i].getWidth(null) != activeImage[i].getWidth(null)) {
            System.out.println("TabStrip Warning: idleImage and "
                    + "activeImage do not match widths for image " + i);
        }
        if (idleImage[i].getHeight(null) != activeImage[i].getHeight(null)) {
            System.out.println("TabStrip Warning: idleImage and "
                    + "activeImage do not match heights for image " + i);
        }
    }
    if (idleCorner.getWidth(null) != selectedCorner.getWidth(null)) {
        System.out.println("TabStrip Warning: idleCorner and "
                + "selectedCorner do not match widths!");
    }
    if (idleCorner.getHeight(null) != selectedCorner.getHeight(null)) {
        System.out.println("TabStrip Warning: idleCorner and "
                + "selectedCorner do not match heights!");
    }
}