I'm trying to translate between view and viewport coordinates. 
But the JViewport/JScrollpane doesn't seem to work as documented. `JViewport.toViewCoordinates()`
thinks the view is always at the top left of the component, even though that's clearly not the case.

```
String text = "blahblahblah\nblahblah\nblah";
JFrame frame = new JFrame("title");
JTextArea textArea = new JTextArea(text, 1, 30); // shows only one line
frame.add(new JScrollPane(textArea));
frame.pack();
frame.setVisible(true);
textArea.setCaretPosition(text.length()); // now showing the last line
JViewport viewport = ((JViewport)textArea.getParent());

viewport.getViewRect(); // returns java.awt.Rectangle[x=0,y=0,width=330,height=16]

viewport.getViewPosition(); // returns java.awt.Point[x=0,y=0]

viewport.toViewCoordinates(new Point(0,0)); // returns java.awt.Point[x=0,y=0]

```

The above is contrived example. My real `JTextArea` is larger than one line. I don't need JTextArea "model" coordinate (the offset in the text). I need genuine 2d coordinates.

The view position shouldn't be (0,0), as the first visible character in the viewport is actually in the 3rd line of the JTextArea.

Any other suggestions on how I can translate between view and component coordinates when using JScrollPane?

--- added ---

This also fails.

```
SwingUtilities.convertPoint(viewport,0,0, textArea);
(java.awt.Point) java.awt.Point[x=0,y=0]

```

--- added ---

Here is the final working version, based on the answer I received.
it shows `java.awt.Point[x=0,y=32]` which is what I expected.

```
@Test
public void test() throws InterruptedException {

    String text = "blahblahblah\nblahblah\nblah";
    JFrame frame = new JFrame("title");
    JTextArea textArea = new JTextArea(text, 1, 30);
    frame.add(new JScrollPane(textArea));
    frame.pack();
    frame.setVisible(true);
    textArea.setCaretPosition(text.length());
    final JViewport viewport = ((JViewport)textArea.getParent());

    SwingUtilities.invokeLater(new Runnable()
    {
        @Override
        public void run() {
            System.out.println(viewport.getViewPosition());
        }
    });

    Thread.sleep(1000);
}

```