commit f5215bb92ac7f34310ec43d9075c048566b64628
from: Stefan Sperling <stsp@stsp.name>
date: Fri Feb 22 11:25:11 2019 UTC

make 'tog diff' show a progress message while generating diffs

commit - 8a42fca8ab01e340d7099ee3f5988bf7b4c51768
commit + f5215bb92ac7f34310ec43d9075c048566b64628
blob - ea459c1816bc8a91570634707683fbaa538f62a8
blob + bc37cceed85d1e8e7c53e34fec163f26ce9d3160
--- tog/tog.c
+++ tog/tog.c
@@ -486,7 +486,7 @@ view_set_child(struct tog_view *view, struct tog_view 
 static int
 view_is_splitscreen(struct tog_view *view)
 {
-	return !view_is_parent_view(view) && view->begin_x > 0;
+	return view->begin_x > 0;
 }
 
 static void
@@ -2107,6 +2107,15 @@ done:
 	return err;
 }
 
+static void
+diff_view_indicate_progress(struct tog_view *view)
+{
+	werase(view->window);
+	waddstr(view->window, "diffing...");
+	update_panels();
+	doupdate();
+}
+
 static const struct got_error *
 open_diff_view(struct tog_view *view, struct got_object_id *id1,
     struct got_object_id *id2, struct tog_view *log_view,
@@ -2148,6 +2157,10 @@ open_diff_view(struct tog_view *view, struct got_objec
 	view->state.diff.repo = repo;
 	view->state.diff.refs = refs;
 
+	if (log_view && view_is_splitscreen(view))
+		show_log_view(log_view); /* draw vborder */
+	diff_view_indicate_progress(view);
+
 	err = create_diff(&view->state.diff);
 	if (err) {
 		free(view->state.diff.id1);
@@ -2275,12 +2288,14 @@ input_diff_view(struct tog_view **new_view, struct tog
 		case '[':
 			if (s->diff_context > 0) {
 				s->diff_context--;
+				diff_view_indicate_progress(view);
 				err = create_diff(s);
 			}
 			break;
 		case ']':
 			if (s->diff_context < GOT_DIFF_MAX_CONTEXT) {
 				s->diff_context++;
+				diff_view_indicate_progress(view);
 				err = create_diff(s);
 			}
 			break;
@@ -2306,6 +2321,7 @@ input_diff_view(struct tog_view **new_view, struct tog
 			s->first_displayed_line = 1;
 			s->last_displayed_line = view->nlines;
 
+			diff_view_indicate_progress(view);
 			err = create_diff(s);
 			break;
 		case '>':
@@ -2345,6 +2361,7 @@ input_diff_view(struct tog_view **new_view, struct tog
 			s->first_displayed_line = 1;
 			s->last_displayed_line = view->nlines;
 
+			diff_view_indicate_progress(view);
 			err = create_diff(s);
 			break;
 		default: