Glimpse CollapsibleTimelinePlotExample extension demonstrating use of TaggedAxis Constraints

TaggedAxisConstraintsExample.java

        // replace the default StackedTimePlot2D mouse listener behavior with
        // the default tagged axis behavior (the selected area will not follow
        // the mouse, but the user can move it by clicking and dragging inside
        // the selected area)
        plot.setTimeAxisMouseListener( new TaggedAxisMouseListener1D( ) );
        
        // lock the timeline at the current max selection value
        plot.setCurrentTimeLocked( true );
        
        // add a constraint which prevents the max selection value
        // from moving past the max timeline value
        plot.getTimeAxis( ).addConstraint( new Constraint( )
        {
            @Override
            public String getName( )
            {
                return "CurrentTimeLocked";
            }

            @Override
            public void applyConstraint( TaggedAxis1D axis )
            {
                if ( plot.isCurrentTimeLocked( ) )
                {
                    Tag minTag = plot.getTimeSelectionMinTag( );
                    Tag maxTag = plot.getTimeSelectionMaxTag( );
                    
                    double min = minTag.getValue( );
                    double max = maxTag.getValue( );
                    double diff = max - min;
                    if ( max > axis.getMax( ) )
                    {
                        minTag.setValue( axis.getMax( ) - diff );
                        maxTag.setValue( axis.getMax( ) );
                    }
                }
            }
        });