Can't get to JIRA right now, but this is by design. Since a decorator is not aware of the component or components to which it is attached, it can't automatically update the display. It is up to the code that modifies the decorator's state to call repaint() on any affected components.
On Aug 1, 2011, at 6:58 PM, Bill van Melle (JIRA) wrote: > Calling setScale on scaleDecorator doesn't update the display > ------------------------------------------------------------- > > Key: PIVOT-783 > URL: https://issues.apache.org/jira/browse/PIVOT-783 > Project: Pivot > Issue Type: Bug > Components: wtk > Affects Versions: 2.0, 2.0.1 > Reporter: Bill van Melle > > > When you call setScale on a scaleDecorator that's already in the display > tree, the display does not update. You can't see the effect of the change > until something else causes a repaint. > > Looking at the code, isn't this an issue for decorators in general? I don't > see any mechanism for decorators to notify the component (or components?) > that they are attached to that they've changed. If you're not going to > notify, then shouldn't decorators be immutable objects? (Of course, that > would break a lot of code.) > > FWIW, a demonstration: > > <Window title="Scale change" maximized="true" > xmlns:bxml="http://pivot.apache.org/bxml"; > xmlns:effects="org.apache.pivot.wtk.effects" > xmlns="org.apache.pivot.wtk"> > <BoxPane orientation="vertical" preferredWidth="300"> > <PushButton buttonData="Change"> > <buttonPressListeners> > function buttonPressed(button) { > scaleDecorator.setScale(2.0); > } > </buttonPressListeners> > </PushButton> > <Label text="This text should get twice as big when I push the button"> > <decorators> > <effects:ScaleDecorator bxml:id="scaleDecorator" > horizontalAlignment="left" verticalAlignment="top" /> > </decorators> > </Label> > </BoxPane> > </Window> > > -- > This message is automatically generated by JIRA. > For more information on JIRA, see: http://www.atlassian.com/software/jira > >
