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author | Anatolij Gustschin <agust@denx.de> | 2008-01-11 02:39:47 +0100 |
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committer | Rodolfo Giometti <giometti@linux.it> | 2008-01-11 16:04:46 +0100 |
commit | 20c450ef61ef2eb1c96f9b59ba0eb8d849bba058 (patch) | |
tree | 34781f8ff9db9216958506659cd8a41a773fe271 /drivers/video/cfb_console.c | |
parent | 422b1a01602b6e2fbf8444a1192c7ba31461fd4c (diff) | |
download | bootable_bootloader_goldelico_gta04-20c450ef61ef2eb1c96f9b59ba0eb8d849bba058.zip bootable_bootloader_goldelico_gta04-20c450ef61ef2eb1c96f9b59ba0eb8d849bba058.tar.gz bootable_bootloader_goldelico_gta04-20c450ef61ef2eb1c96f9b59ba0eb8d849bba058.tar.bz2 |
Fix video console newline and carriage return handling
Lines of the lenght CONSOLE_COLS or greater than CONSOLE_COLS
are not displayed correctly. This is an attempt to fix
this issue. Also add carriage return handling.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Rodolfo Giometti <giometti@linux.it>
Diffstat (limited to 'drivers/video/cfb_console.c')
-rw-r--r-- | drivers/video/cfb_console.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/drivers/video/cfb_console.c b/drivers/video/cfb_console.c index 82cc0c7..6262d02 100644 --- a/drivers/video/cfb_console.c +++ b/drivers/video/cfb_console.c @@ -647,7 +647,14 @@ static void console_back (void) static void console_newline (void) { - CURSOR_OFF console_row++; + /* Check if last character in the line was just drawn. If so, cursor was + overwriten and need not to be cleared. Cursor clearing without this + check causes overwriting the 1st character of the line if line lenght + is >= CONSOLE_COLS + */ + if (console_col < CONSOLE_COLS) + CURSOR_OFF + console_row++; console_col = 0; /* Check if we need to scroll the terminal */ @@ -660,16 +667,26 @@ static void console_newline (void) } } +static void console_cr (void) +{ + CURSOR_OFF console_col = 0; +} + /*****************************************************************************/ void video_putc (const char c) { + static int nl = 1; + switch (c) { - case 13: /* ignore */ + case 13: /* back to first column */ + console_cr (); break; case '\n': /* next line */ - console_newline (); + if (console_col || (!console_col && nl)) + console_newline (); + nl = 1; break; case 9: /* tab 8 */ @@ -691,8 +708,10 @@ void video_putc (const char c) console_col++; /* check for newline */ - if (console_col >= CONSOLE_COLS) + if (console_col >= CONSOLE_COLS) { console_newline (); + nl = 0; + } } CURSOR_SET} |