libview: Check number of pages when processing button events

MarekKasik · raveit65 · commit f671e62f59c9 · 2018-03-22T08:27:44.000+01:00
Check whether there are some pages in the opened document when processing button events to avoid crash. https://bugzilla.gnome.org/show_bug.cgi?id=769700 origin commit: https://git.gnome.org/browse/evince/commit/?id=f30aed7
diff --git a/libview/ev-view.c b/libview/ev-view.c
@@ -4436,7 +4436,7 @@ ev_view_button_press_event (GtkWidget      *widget,
 {
 	EvView *view = EV_VIEW (widget);
 
-	if (!view->document)
+	if (!view->document || ev_document_get_n_pages (view->document) <= 0)
 		return FALSE;
 
 	if (gtk_gesture_is_recognized (view->zoom_gesture))

Original file line number	Diff line number	Diff line change
`@@ -4436,7 +4436,7 @@ ev_view_button_press_event (GtkWidget *widget,`
`4436`	`4436`	`{`
`4437`	`4437`	`EvView *view = EV_VIEW (widget);`
`4438`	`4438`
`4439`		`- if (!view->document)`
	`4439`	`+ if (!view->document \|\| ev_document_get_n_pages (view->document) <= 0)`
`4440`	`4440`	`return FALSE;`
`4441`	`4441`
`4442`	`4442`	`if (gtk_gesture_is_recognized (view->zoom_gesture))`