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added menu2 with open and exit options

--- a/view.c

+++ b/view.c

@@ -24,6 +24,21 @@

 Image *img;

 Point pos;

+enum

+{

+	Mopen,

+	Mexit,

+};

+char *menu2str[] =

+{

+	"open",

+	"exit",

+	nil,

+};

+Menu menu2 = { menu2str };

+

+void redraw(void);

+

 Image*

 load9(char *filename)

 {

@@ -91,6 +106,21 @@

 	return i;

 }

+int

+loadfromfile(char *filename)

+{

+	Image *i;

+

+	i = load(filename);

+	if(i == nil)

+		return -1;

+	freeimage(img);

+	img = i;

+	pos = subpt(ZP, img->r.min);

+	redraw();

+	return 0;

+}

+

 void

 initbg(void)

 {

@@ -158,7 +188,6 @@

 {

 	int rm;

 	char *a, *f;

-	Image *i;

 	rm = 0;

 	a = plumblookup(m->attr, "action");

@@ -172,13 +201,7 @@

 	}else{

 		f = strdup(m->data);

 	}

-	i = load(f);

-	if(i != nil){

-		freeimage(img);

-		img = i;

-		pos = subpt(ZP, img->r.min);

-		redraw();

-	}else

+	if(loadfromfile(f) < 0)

 		fprint(2, "cannot load plumbed image: %r"); /* XXX: visual report */

 Err:

 	plumbfree(m);

@@ -200,6 +223,8 @@

 evtmouse(Mouse m)

 {

 	Point o;

+	int n;

+	char buf[255] = {0};

 	if(m.buttons == 1){

 		for(;;){

@@ -209,6 +234,19 @@

 			if((mctl->buttons & 1) == 0)

 				break;

 			pan(subpt(mctl->xy, o));

+		}

+	}else if(m.buttons == 2){

+		n = menuhit(2, mctl, &menu2, nil);

+		switch(n){

+		case Mopen:

+			if(enter("open:", buf, sizeof buf, mctl, kctl, nil) > 0){

+				if(loadfromfile(buf) < 0)

+					fprint(2, "cannot open file '%s': %r\n", buf);

+			}

+			break;

+		case Mexit:

+			threadexitsall(nil);

+			break;

 		}

 	}

 }