ui/src/main/java/ucar/nc2/ui/image/PicturePane.java
public void scrollUp() {
		// if the bottom edge of the picture is visible, do not scroll
		if (((sclPic.getOriginalHeight() - focusPoint.y) * sclPic.getScaleFactor()) + getSize().height /2 > getSize().height) {
			focusPoint.y = focusPoint.y + (int) (getSize().height * 0.1 / sclPic.getScaleFactor()) ;
			repaint();
		} else  {
			Tools.log ("Scrollup rejected because bottom of picture is already showing.");
		}
	}
public void scrollUp() {
		// if the bottom edge of the picture is visible, do not scroll
		if (((sclPic.getOriginalHeight() - focusPoint.y) * sclPic.getScaleFactor()) + getSize().height /2 > getSize().height) {
			focusPoint.y = focusPoint.y + (int) (getSize().height * 0.1 / sclPic.getScaleFactor()) ;
			repaint();
		} else  {
			Tools.log ("Scrollup rejected because bottom of picture is already showing.");
		}
	}
method that moves the image up by 10% of the pixels shown on the screen.
This method
calls <code>repaint()</code> directly since no time consuming image operations need to take place.
<p><img src=../scrollUp.png border=0><p>
@see #scrollUp()
@see #scrollDown()
@see #scrollLeft()
@see #scrollRight()