question: public boolean mouseDragged ( MouseEvent e ) { if ( grabbed_plot_graphics_ ) { int x = e . getX ( ) ; int y = e . getY ( ) ; int dx = x - prevX ; int dy = y - prevY ; plotX += dx ; plotY += dy ; prevX = x ; prevY = y ; graph . resize ( plotX , plotY , plotWidth , plotHeight ) ; OMGraphicList plotGraphics = graph . getPlotGraphics ( ) ; plotGraphics . generate ( getProjection ( ) , true ) ; repaint ( ) ; } return false ; }
target:  Called whenever the mouse is dragged on this layer and one of the requested mouse modes is active.