mudgangster

commit ef4a98aba49c5feb9099df8eb41a424440769d66
parent bec17acc262bd724ec8bea00ecbf0abefb07d008
Author: Michael Savage <mikejsavage@gmail.com>
Date:   Fri,  7 Sep 2018 21:50:43 +0300

Fix scroll sliding when scrollback buffer is full

Diffstat:
src/textbox.cc
 | 
6
++++--

1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/src/textbox.cc b/src/textbox.cc
@@ -53,6 +53,8 @@ void textbox_add( TextBox * tb, const char * str, size_t len, Colour fg, Colour 
 }
 
 void textbox_newline( TextBox * tb ) {
+	tb->dirty = true;
+
 	if( tb->num_lines < tb->max_lines ) {
 		tb->num_lines++;
 		if( tb->scroll_offset > 0 )
@@ -61,10 +63,10 @@ void textbox_newline( TextBox * tb ) {
 	}
 
 	tb->head++;
+	tb->scroll_offset = min( tb->scroll_offset + 1, tb->num_lines - 1 );
+
 	TextBox::Line * line = &tb->lines[ ( tb->head + tb->num_lines ) % tb->max_lines ];
 	line->len = 0;
-
-	tb->dirty = true;
 }
 
 void textbox_scroll( TextBox * tb, int offset ) {