Avoid blank space after the last list box item

Automatically scroll down the list box when resizing creates some blank
space below the list of items.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/wins.c b/src/wins.c
index 0d8160a..14616aa 100644
--- a/src/wins.c
+++ b/src/wins.c
@@ -386,6 +386,12 @@ void wins_scrollwin_down(struct scrollwin *sw, int amount)
 		sw->line_off = sw->line_num - inner_h;
 }
 
+int wins_scrollwin_is_visible(struct scrollwin *sw, unsigned line)
+{
+	int inner_h = sw->h - (conf.compact_panels ? 2 : 4);
+	return ((line >= sw->line_off) && (line < sw->line_off + inner_h));
+}
+
 void wins_scrollwin_ensure_visible(struct scrollwin *sw, unsigned line)
 {
 	int inner_h = sw->h - (conf.compact_panels ? 2 : 4);
@@ -396,6 +402,12 @@ void wins_scrollwin_ensure_visible(struct scrollwin *sw, unsigned line)
 		sw->line_off = line - inner_h + 1;
 }
 
+void wins_scrollwin_set_lower(struct scrollwin *sw, unsigned line)
+{
+	int inner_h = sw->h - (conf.compact_panels ? 2 : 4);
+	sw->line_off = MAX((int)line - inner_h + 1, 0);
+}
+
 void wins_resize_panels(void)
 {
 	wins_get_config();