g.fillRoundRect(x1+3,barY+3,x2-x1-1,t.y1-barY, m, m);
g.setColor(fg);
g.fillRoundRect(x1,barY,x2-x1-1,t.y1-barY, m, m);
MouseoverLabel mouse=new MouseoverLabel(""+Math.round(num), "items",x1,barY,x2-x1-1,t.y1-barY);
objectLocations.add(mouse);
}
}
// finally label the tracks. we do this last so that the labels go on top of the data.