gantt chart scroll bar

[bch]

Hello,

I am investigating the Gantt Chart using the JFreeChart library plus the Gantt extensions.

I would like to include a scrollbar in the ChartPanel, so I have added the following code in the constructor:

scrollingGraphPanel = new JScrollPane( this, JScrollPane.VERTICAL_SCROLLBAR_NEVER,
JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS );
scrollingGraphPanel.setPreferredSize( new Dimension( width, height ) );

But the horizontal scroll bar does not appear. Could you please tell me why?

Thanks

[David Gilbert]

I think you need to set the preferred size on the ChartPanel, not the JScrollPane.

Regards,

Dave Gilbert

[bch]

Hello David,

thanks for your response.

I have already done what you say. This is my code in the ChartPanel constructor:

public ChartPanel (.....) {

this.chart = chart;
this.chartMouseListeners = new java.util.ArrayList();
this.chartMouseMotionListeners = new java.util.ArrayList();
this.info = new ChartRenderingInfo();

setPreferredSize(new Dimension(width, height));

//Put the drawing area in a scroll pane.
scrollingGraphPanel = new JScrollPane ( this, JScrollPane.VERTICAL_SCROLLBAR_NEVER, JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS );
scrollingGraphPanel.setPreferredSize( new Dimension( width, height ) );
.....
}

I would like to add the Scroll Bar into the "drawing area" where the CategoryItemEntities are drown. Maybe I should try to add it into the plot area.

Thanks in advance,
Belén