* Implement scrolling in tinycurses

* Fix an off by one bug

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Jordan Crouse <jordan.crouse@amd.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3578 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

diff --git a/payloads/libpayload/curses/tinycurses.c b/payloads/libpayload/curses/tinycurses.c
index 960e74fc9e195304b9d22f15a9cba6665ca9c46d..0714298517f6bbaffd5ecc2cfc21775b387c3b39 100644 (file)
--- a/payloads/libpayload/curses/tinycurses.c
+++ b/payloads/libpayload/curses/tinycurses.c
@@ -70,7 +70,7 @@ static int window_count = 1;
 static struct ldat ldat_list[MAX_WINDOWS][SCREEN_Y];
 static int ldat_count = 0;
 
-/* One item bigger than SCREEN_X to reverse place for a NUL byte. */
+/* One item bigger than SCREEN_X to reserve space for a NUL byte. */
 static NCURSES_CH_T linebuf_list[SCREEN_Y * MAX_WINDOWS][SCREEN_X + 1];
 static int linebuf_count = 0;
 
@@ -305,8 +305,8 @@ WINDOW *initscr(void)
        stdscr = newwin(SCREEN_Y, SCREEN_X + 1, 0, 0);
        // TODO: curscr, newscr?
 
-       for (y = 0; y < stdscr->_maxy; y++) {
-               for (x = 0; x < stdscr->_maxx; x++) {
+       for (y = 0; y <= stdscr->_maxy; y++) {
+               for (x = 0; x <= stdscr->_maxx; x++) {
                        stdscr->_line[y].text[x].chars[0] = ' ';
                        stdscr->_line[y].text[x].attr = A_NORMAL;
                }
@@ -817,6 +817,22 @@ int wscrl(WINDOW *win, int n)
                return ERR;
 
        if (n != 0) {
+               int x, y;
+
+               for (y = 0; y <= (win->_maxy - n); y++) {
+                       for (x = 0; x <= win->_maxx; x++) {
+                               win->_line[y].text[x].chars[0] = win->_line[y + n].text[x].chars[0];
+                               win->_line[y].text[x].attr = win->_line[y + n].text[x].attr;
+                       }
+               }
+
+               for (y = (win->_maxy+1 - n); y <= win->_maxy; y++) {
+                       for (x = 0; x <= win->_maxx; x++) {
+                               win->_line[y].text[x].chars[0] = ' ';
+                               win->_line[y].text[x].attr = A_NORMAL;
+                       }
+               }
+
                // _nc_scroll_window(win, n, win->_regtop, win->_regbottom, win->_nc_bkgd);
                // _nc_synchook(win);
        }