shithub: rio

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window maintains contents when dragged

--- a/rio.c

+++ b/rio.c

@@ -979,7 +979,7 @@

 Image*

 drag(Window *w)

 {

-	Point p, op, d, dm, om;

+	Point p, op, origp, d, dm, om;

 	Rectangle r;

 	menuing = TRUE;

@@ -988,11 +988,14 @@

 	dm = subpt(om, w->screenr.min);

 	d = subpt(w->screenr.max, w->screenr.min);

 	op = subpt(om, dm);

+	origp = w->i->r.min;

 	drawborder(Rect(op.x, op.y, op.x+d.x, op.y+d.y), sizecol);

 	while(mouse->buttons==4){

 		p = subpt(mouse->xy, dm);

+		r = Rect(p.x, p.y, p.x+d.x, p.y+d.y);

 		if(!eqpt(p, op)){

-			drawborder(Rect(p.x, p.y, p.x+d.x, p.y+d.y), sizecol);

+			originwindow(w->i, w->i->r.min, r.min);

+			drawborder(r, sizecol);

 			op = p;

 		}

 		readmouse(mousectl);

@@ -1003,6 +1006,7 @@

 	riosetcursor(inborder(r, p) ? corners[whichcorner(r, p)] : nil);

 	menuing = FALSE;

 	if(mouse->buttons!=0 || !goodrect(r) || eqrect(r, w->screenr)){

+		originwindow(w->i, w->i->r.min, origp);

 		flushimage(display, 1);

 		while(mouse->buttons)

 			readmouse(mousectl);