Position problem with four zoom areas at a slide

Hi to all,
my problem, i've made a slide, containing a single picture (periodic table). Then, i added four zoom areas at the elements C, H, S and N. Source areas are 45 by 45 px, target areas are 180 to 180 px. I try to set fixed postions for the targets (Target || position X || Position Y):
Target 1
90
330
Target 2
290
330
Target 3
490
330
Target 4
690
330
The result looks really ugly, size and positions went totally wrong. This is just an examples, sometimes, the target areas are overlap each other, looks like a silly randomizer at work...
Maybe anyone can give me a idea/solution to fix this?
Thanks in advance
Marc

If you use CP5 or CP5.5 I would use Effects in this case: a combination of a motion path and scaling. Try to find the correct combination, save as a custom effect and apply to all the elements where you want the Zoom.
Lilybiri

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    // choose a declaration according to your java version
    List<JLabel> labels;     // declaration for j2se 1.5+
//    List labels;           // j2se 1.4-
    JLabel lastSelected;
    boolean showLocations;
    JLabel selectedLabel;
    boolean dragging;
    Point offset;
    int count = 0;
    private static String SELECTED = "selected";
    public BackPanel3(String path, int width, int height){
        setLayout(null);
        this.width = width;
        this.height = height;
        setPreferredSize(new Dimension(width,height));
        addMouseListener(this);
        addMouseMotionListener(this);
        // chose an instantiation according to your java version
        labels = new ArrayList<JLabel>();    // j2se 1.5+
//        labels = new ArrayList();          // j2se 1.4-
        lastSelected = new JLabel();
        lastSelected.putClientProperty(SELECTED, Boolean.FALSE);
        showLocations = true;
        dragging = false;
        offset = new Point();
        this.imgPath = path;
        setImage();
    public void setImage(){
        try{
            image = getImage(imgPath);
        }catch(Exception e){
            System.out.println(" (init) ERROR: " + e);
            e.printStackTrace();
    public void setStart(boolean flag){
        start = flag;
    public void setZoomFactor(double zoom){
        zoomFactor = (zoom/100);
        setPreferredSize(new Dimension((int)(850*zoomFactor), (int)(1100*zoomFactor)));
        repaint();
        revalidate();
    public double getZoomFactor(){
        return zoomFactor;
    public void toggleShowLocations() {
        showLocations = !showLocations;
        repaint();
    public void mouseClicked(MouseEvent e) {
        if(start){
            JLabel msgLabel = new JLabel("Test " + count++);
            this.add(msgLabel);
            Dimension d = msgLabel.getPreferredSize();
            msgLabel.setBounds(e.getX(), e.getY(), d.width, d.height);
            labels.add(msgLabel);
            msgLabel.putClientProperty(SELECTED, Boolean.FALSE);
            return;
    public void mousePressed(MouseEvent e) {
        Point p = e.getPoint();
        for(int j = 0; j < labels.size(); j++) {
            JLabel label = (JLabel)labels.get(j);
            Rectangle bounds = label.getBounds();
            AffineTransform at =
                AffineTransform.getScaleInstance(zoomFactor, zoomFactor);
            Shape xs = at.createTransformedShape(bounds);
            if(xs.contains(p)) {
                selectedLabel = label;
                Rectangle r = xs.getBounds();
                offset.x = p.x - r.x;
                offset.y = p.y - r.y;
                dragging = true;
                break;
    public void mouseReleased(MouseEvent e) {
        dragging = false;
    public void mouseDragged(MouseEvent me){
        if(dragging) {
            Rectangle bounds = selectedLabel.getBounds();
            AffineTransform at =
                AffineTransform.getScaleInstance(1.0/zoomFactor, 1.0/zoomFactor);
            Point2D p = at.transform(me.getPoint(), null);
            int x = (int)(p.getX() - offset.x);
            int y = (int)(p.getY() - offset.y);
            selectedLabel.setLocation(x, y);
            repaint();
    public void mouseMoved(MouseEvent me){
        if(labels.size() == 0)
            return;
        Point p = me.getPoint();
        boolean hovering = false;
        boolean selectionChanged = false;
        for(int j = 0; j < labels.size(); j++) {
            final JLabel label = (JLabel)labels.get(j);
            Rectangle r = label.getBounds();
            AffineTransform at =
                AffineTransform.getScaleInstance(zoomFactor, zoomFactor);
            Shape scaledBounds = at.createTransformedShape(r);
            if(scaledBounds.contains(p)) {
                hovering = true;
                if(!((Boolean)label.getClientProperty(SELECTED)).booleanValue()) {
                    label.putClientProperty("selected", Boolean.TRUE);
                    setCursor(hourglassCursor);
                    if(lastSelected != label) // for only one JLabel
                        lastSelected.putClientProperty(SELECTED, Boolean.FALSE);
                    lastSelected = label;
                    selectionChanged = true;
                    break;
        // reset lastSelected when there is no selection/hovering
        if(!hovering &&
            ((Boolean)lastSelected.getClientProperty(SELECTED)).booleanValue()) {
            lastSelected.putClientProperty(SELECTED, Boolean.FALSE);
            setCursor(Cursor.getDefaultCursor());
            selectionChanged = true;
        if(selectionChanged)
            repaint();
    public void mouseEntered(MouseEvent e) { }
    public void mouseExited(MouseEvent e) { }
    protected void paintComponent(Graphics g){
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g;
        g2.scale(zoomFactor, zoomFactor);
        g2.drawImage(image, 0, 0, this);
        if(showLocations) {
            // show bounds of the actual JLabel children
            // components as they exist on this component
            AffineTransform at = AffineTransform.getScaleInstance(1.0/zoomFactor,
                                                                  1.0/zoomFactor);
            g2.setPaint(Color.blue);
            Component[] c = getComponents();
            for(int j = 0; j < c.length; j++)
                g2.draw(at.createTransformedShape(c[j].getBounds()));
        // show selected label
        g2.setPaint(Color.red);
        for(int j = 0; j < labels.size(); j++) {
            JLabel label = (JLabel)labels.get(j);
            if(((Boolean)label.getClientProperty("selected")).booleanValue()) {
                g2.draw(label.getBounds());
                break;
    protected BufferedImage getImage(String path){
        try{
            URL imgURL = BackPanel3.class.getResource(path);
            if (imgURL == null &&
                   (path.indexOf(":\\") > 0 || path.indexOf(":/") > 0))
                imgURL = new URL("file:///"+path);
            return getImage(imgURL);
        }catch(MalformedURLException mue){
            System.out.println("error "+mue);
        return null;
    protected BufferedImage getImage(URL url){
        try{
            if (url != null) {
                BufferedImage source = ImageIO.read(url);
                double xScale = (double)width / source.getWidth();
                double yScale = (double)height / source.getHeight();
                double scale = Math.min(xScale, yScale);
                int w = (int)(scale*source.getWidth());
                int h = (int)(scale*source.getHeight());
                BufferedImage scaled = new BufferedImage(w, h, source.getType());
                Graphics2D g2 = scaled.createGraphics();
                g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
                                    RenderingHints.VALUE_INTERPOLATION_BICUBIC);
                // scales faster than getScaledInstance
                AffineTransform at = AffineTransform.getScaleInstance(scale, scale);
                g2.drawRenderedImage(source, at);
                g2.dispose();
                return scaled;
            }else{
                return null;
        }catch(IOException ioe){
            System.out.println("read error "+ioe);
            return null;
}

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