mudgangster

commit 695221b881f7e67cf674af568350b07e75050d74
parent 278eea376445a38d8f94eaa520f8f8ec0d18bbe2
Author: Michael Savage <mikejsavage@gmail.com>
Date:   Mon,  3 Sep 2018 17:30:30 +0300

Scrolling fixes

Diffstat:
src/textbox.cc
 | 
5
+++--

1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/src/textbox.cc b/src/textbox.cc
@@ -11,6 +11,7 @@ void textbox_init( TextBox * tb ) {
 	*tb = { };
 	// TODO: this is kinda crap
 	tb->text.lines = ( Line * ) calloc( sizeof( Line ), SCROLLBACK_SIZE );
+	tb->text.num_lines = 1;
 }
 
 void textbox_term( TextBox * tb ) {
@@ -116,7 +117,7 @@ void TextBox::scroll( int offset ) {
 		scroll_offset -= min( size_t( -offset ), scroll_offset );
 	}
 	else {
-		scroll_offset = min( scroll_offset + offset, text.num_lines );
+		scroll_offset = min( scroll_offset + offset, text.num_lines - 1 );
 	}
 
 	textbox_draw( this );
@@ -124,7 +125,7 @@ void TextBox::scroll( int offset ) {
 
 void TextBox::page_down() {
 	size_t rows = height / ( Style.font.height + SPACING );
-	scroll( -int( rows ) - 2 );
+	scroll( -int( rows ) + 2 );
 }
 
 void TextBox::page_up() {