ChartViewer.java 文件源码

protected void updateState ()
{
    final org.eclipse.scada.chart.XAxis x;

    x = getTimeRulerViewer ();

    // update mouse controllers

    if ( this.mouseHover != null )
    {
        this.mouseHover.dispose ();
        this.mouseHover = null;
    }

    if ( isHoverable () )
    {
        this.mouseHover = new MouseHover ( this.manager );
        this.mouseHover.setVisible ( true );
    }

    // update current time tracker

    if ( this.timeRuler == null && this.showTimeRuler && x != null )
    {
        this.timeRuler = new CurrentTimeRuler ( x );
        this.timeRuler.setColor ( new RGB ( 0, 0, 255 ) );
        this.manager.addRenderer ( this.timeRuler, 100 );
    }
    else if ( this.timeRuler != null && !this.showTimeRuler || x == null )
    {
        disposeTimeRuler ();
    }
}