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console: add erase-helpers

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Add functions to erase several parts of the screen.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
This commit is contained in:
David Herrmann 2012-02-04 18:31:10 +01:00
parent 37cb482bbc
commit f85244ead9
2 changed files with 60 additions and 0 deletions
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54
src/console.c
View File

@ -401,3 +401,57 @@ void kmscon_console_move_right(struct kmscon_console *con, unsigned int num)
else
con->cursor_x += num;
}
void kmscon_console_erase_cursor_to_end(struct kmscon_console *con)
{
if (!con)
return;
kmscon_buffer_erase_region(con->cells, con->cursor_x, con->cursor_y,
con->cells_x - 1, con->cursor_y);
}
void kmscon_console_erase_home_to_cursor(struct kmscon_console *con)
{
if (!con)
return;
kmscon_buffer_erase_region(con->cells, 0, con->cursor_y,
con->cursor_x, con->cursor_y);
}
void kmscon_console_erase_current_line(struct kmscon_console *con)
{
if (!con)
return;
kmscon_buffer_erase_region(con->cells, 0, con->cursor_y,
con->cells_x - 1, con->cursor_y);
}
void kmscon_console_erase_screen_to_cursor(struct kmscon_console *con)
{
if (!con)
return;
kmscon_buffer_erase_region(con->cells, 0, 0,
con->cursor_x, con->cursor_y);
}
void kmscon_console_erase_cursor_to_screen(struct kmscon_console *con)
{
if (!con)
return;
kmscon_buffer_erase_region(con->cells, con->cursor_x, con->cursor_y,
con->cells_x - 1, con->cells_y - 1);
}
void kmscon_console_erase_screen(struct kmscon_console *con)
{
if (!con)
return;
kmscon_buffer_erase_region(con->cells, 0, 0,
con->cells_x - 1, con->cursor_y);
}

6
src/console.h
View File

@ -99,5 +99,11 @@ void kmscon_console_move_down(struct kmscon_console *con, unsigned int num,
bool scroll);
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_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);
void kmscon_console_erase_screen_to_cursor(struct kmscon_console *con);
void kmscon_console_erase_cursor_to_screen(struct kmscon_console *con);
void kmscon_console_erase_screen(struct kmscon_console *con);
#endif /* KMSCON_CONSOLE_H */