#include <lib9.h>#include <draw.h>#include <memdraw.h>#include <memlayer.h>#include <cursor.h>#include "dat.h"#include "fns.h"#include "inc.h"#include "x.h" XImage*xgetxdata(Memimage *m, Rectangle r){	int x, y;	uchar *p;	Point tp, xdelta, delta;	Xmem *xm;		xm = m->X;	if(xm == nil)		return nil; 	if(xm->dirty == 0)		return xm->xi; 	abort();	/* should never call this now */ 	r = xm->dirtyr;	if(Dx(r)==0 || Dy(r)==0)		return xm->xi; 	delta = subpt(r.min, m->r.min); 	tp = xm->r.min;	/* need temp for Digital UNIX */	xdelta = subpt(r.min, tp); 	XGetSubImage(xconn.display, xm->pixmap, delta.x, delta.y, Dx(r), Dy(r),		AllPlanes, ZPixmap, xm->xi, xdelta.x, delta.y); 	if(xconn.usetable && m->chan==CMAP8){		for(y=r.min.y; y<r.max.y; y++)		for(x=r.min.x, p=byteaddr(m, Pt(x,y)); x<r.max.x; x++, p++)			*p = xconn.toplan9[*p];	}	xm->dirty = 0;	xm->dirtyr = Rect(0,0,0,0);	return xm->xi;} voidxputxdata(Memimage *m, Rectangle r){	int offset, x, y;	uchar *p;	Point tp, xdelta, delta;	Xmem *xm;	XGC gc;	XImage *xi; 	xm = m->X;	// XXX TODO:	// This should not happen, but we are not	// always setting it in allocmemimage.	if(xm == nil) {		// print("XXX devwsys: xm is nil!\n");		return;	} 	xi = xm->xi;	gc = m->chan==GREY1 ? xconn.gccopy0 : xconn.gccopy;	if(m->depth == 24)		offset = r.min.x & 3;	else		offset = r.min.x & (31/m->depth); 	delta = subpt(r.min, m->r.min); 	tp = xm->r.min;	/* need temporary on Digital UNIX */	xdelta = subpt(r.min, tp); 	if(xconn.usetable && m->chan==CMAP8){		for(y=r.min.y; y<r.max.y; y++)		for(x=r.min.x, p=byteaddr(m, Pt(x,y)); x<r.max.x; x++, p++)			*p = xconn.tox11[*p];	} 	XPutImage(xconn.display, xm->pixmap, gc, xi, xdelta.x, xdelta.y, delta.x, delta.y,		Dx(r), Dy(r));		if(xconn.usetable && m->chan==CMAP8){		for(y=r.min.y; y<r.max.y; y++)		for(x=r.min.x, p=byteaddr(m, Pt(x,y)); x<r.max.x; x++, p++)			*p = xconn.toplan9[*p];	}} /*static voidaddrect(Rectangle *rp, Rectangle r){	if(rp->min.x >= rp->max.x)		*rp = r;	else		combinerect(rp, r);} void_xdirtyxdata(Memimage *m, Rectangle r){	Xmem *xm; 	xm = m->X;	if(xm == nil)		return; 	xm->dirty = 1;	addrect(&xm->dirtyr, r);}*/