#include <u.h>#include <libc.h>#include <draw.h>#include <event.h>#include <panel.h>#include "pldefs.h"void plscroll(Panel *scrollee, Panel *xscroller, Panel *yscroller){	scrollee->xscroller=xscroller;	scrollee->yscroller=yscroller;	if(xscroller) xscroller->scrollee=scrollee;	if(yscroller) yscroller->scrollee=scrollee;}Scroll plgetscroll(Panel *p){	return p->scr;}void plsetscroll(Panel *p, Scroll s){	if(p->scroll){		if(s.size.x) p->scroll(p, HORIZ, 2, s.pos.x, s.size.x);		if(s.size.y) p->scroll(p, VERT, 2, s.pos.y, s.size.y);	}}