console: add helper to erase current position

This helper erases the current cursor position.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>

2 files changed, 17 insertions, 0 deletions

diff --git a/src/console.c b/src/console.c
index 3209986..dccba24 100644
--- a/src/console.c
+++ b/src/console.c
@@ -422,6 +422,22 @@ void kmscon_console_move_line_home(struct kmscon_console *con)
 	con->cursor_x = 0;
 }
 
+void kmscon_console_erase_cursor(struct kmscon_console *con)
+{
+	unsigned int x;
+
+	if (!con)
+		return;
+
+	if (con->cursor_x >= con->cells_x)
+		x = con->cells_x - 1;
+	else
+		x = con->cursor_x;
+
+	kmscon_buffer_erase_region(con->cells, x, con->cursor_y,
+							x, con->cursor_y);
+}
+
 void kmscon_console_erase_cursor_to_end(struct kmscon_console *con)
 {
 	unsigned int x;
diff --git a/src/console.h b/src/console.h
index 54d7936..17e6af4 100644
--- a/src/console.h
+++ b/src/console.h
@@ -101,6 +101,7 @@ void kmscon_console_move_left(struct kmscon_console *con, unsigned int num);
 void kmscon_console_move_right(struct kmscon_console *con, unsigned int num);
 void kmscon_console_move_line_end(struct kmscon_console *con);
 void kmscon_console_move_line_home(struct kmscon_console *con);
+void kmscon_console_erase_cursor(struct kmscon_console *con);
 void kmscon_console_erase_cursor_to_end(struct kmscon_console *con);
 void kmscon_console_erase_home_to_cursor(struct kmscon_console *con);
 void kmscon_console_erase_current_line(struct kmscon_console *con);