* console_cursor_fix - check and fix cursor position (if it is not out of screen) * console_cursor_up, console_cursor_down, console_cursor_left, console_cursor_right and console_cursor_set_position for changing cursor position * console_newline - added param to specify count of creating new lines * console_previewsline - opposite of console_newline
Signed-off-by: Pali Rohár pali.rohar@gmail.com --- drivers/video/cfb_console.c | 64 +++++++++++++++++++++++++++++++++++++++---- 1 files changed, 58 insertions(+), 6 deletions(-)
diff --git a/drivers/video/cfb_console.c b/drivers/video/cfb_console.c index 7a4f0f3..9e0f665 100644 --- a/drivers/video/cfb_console.c +++ b/drivers/video/cfb_console.c @@ -773,9 +773,54 @@ static void console_back(void) CURSOR_SET; }
-static void console_newline(void) +static void console_cursor_fix(void) { - console_row++; + if (console_row < 0) + console_row = 0; + if (console_row >= CONSOLE_ROWS) + console_row = CONSOLE_ROWS-1; + if (console_col < 0) + console_col = 0; + if (console_col >= CONSOLE_COLS) + console_col = CONSOLE_COLS-1; +} + +static void console_cursor_up(int n) +{ + console_row -= n; + console_cursor_fix(); +} + +static void console_cursor_down(int n) +{ + console_row += n; + console_cursor_fix(); +} + +static void console_cursor_left(int n) +{ + console_col -= n; + console_cursor_fix(); +} + +static void console_cursor_right(int n) +{ + console_col += n; + console_cursor_fix(); +} + +static void console_cursor_set_position(int row, int col) +{ + if (console_row != -1) + console_row = row; + if (console_col != -1) + console_col = col; + console_cursor_fix(); +} + +static void console_newline(int n) +{ + console_row += n; console_col = 0;
/* Check if we need to scroll the terminal */ @@ -784,10 +829,17 @@ static void console_newline(void) console_scrollup();
/* Decrement row number */ - console_row--; + console_row = CONSOLE_ROWS-1; } }
+static void console_previewsline(int n) +{ + /* FIXME: also scroll terminal ? */ + console_row -= n; + console_cursor_fix(); +} + static void console_cr(void) { console_col = 0; @@ -806,7 +858,7 @@ void video_putc(const char c)
case '\n': /* next line */ if (console_col || (!console_col && nl)) - console_newline(); + console_newline(1); nl = 1; break;
@@ -815,7 +867,7 @@ void video_putc(const char c) console_col &= ~0x0007;
if (console_col >= CONSOLE_COLS) - console_newline(); + console_newline(1); break;
case 8: /* backspace */ @@ -829,7 +881,7 @@ void video_putc(const char c)
/* check for newline */ if (console_col >= CONSOLE_COLS) { - console_newline(); + console_newline(1); nl = 0; } }