ScrollPane has the feature for content that needs to track the viewportBounds
size, FitToWidth/FitToHeight, which is nice for things like text areas that
wrap text. Conceptually, it seems like FitToWidth is basically binding
Content.PrefWidth to ViewportBounds.Width.
But it seems more often I really want to bind Content.MinWidth/MinHeight to
ViewportBounds.Width/Height. This is common for things like text areas that
don't wrap text or most text area height (and much more). So I end up doing a
bit of this:
// Add content to ScrollPane and make sure it is at least as big as
ViewportBounds
final Region content = myContent;
ScrollPane scrollPane = new ScrollPane(); scrollPane.setContent(content);
scrollPane.viewportBoundsProperty().addListener(new
ChangeListener<Bounds>() {
public void changed(ObservableValue<? extends Bounds> arg0, Bounds
oldBounds, Bounds newBounds)
{ content.setMinWidth(newBounds.getWidth());
content.setMinHeight(newBounds.getHeight()); }});
To me, this makes it seem like the ScrollPane is only there when it's needed
(otherwise, it's like an invisible Parent Pane). This seems ideal for a default
ScrollPane.
Obviously, this isn't a lot of code, but it's non-obvious, and from googling,
it looks like people stumble over FitToWidth first. It seems to me that a
setGrowToFitWidth/setGrowToFitHeight would be at least as useful. Unless I
missed something. :-)
Jeff Martin
214.513.1636
