#include "art.h"/* * Code for manipulating the selection */Item *selection;void setselection(Item *p){	if(selection==p) return;	/*	 * This should be done differently in the brave new non-xor world	 * but it appears to involve redrawing everything when the selection changes	 */	drawsel();	selection=p;	drawsel();}/* * It would be nice if this were faster */void drawselprim(Item *ip, Item *op){	(*ip->fn->draw)(ip, faint, sel, S|D);}void drawsel(void){	if(selection==0) return;	rectf(sel, sel->r, Zero);	walk(selection, scoffs, drawselprim);	bitblt(sel, add(sel->r.min, Pt(1, 1)), sel, sel->r, S|D);	bitblt(sel, add(sel->r.min, Pt(1, -1)), sel, sel->r, S|D);	bitblt(&screen, add(dwgbox.min, Pt(-1, 0)), sel, dwgbox, S^D);}