norohind/kmscon
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console: add tab-ruler support

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The tab-ruler is used to set console tab-stops. We use an array with one
cell per column that is set to true if it is a tab-stop and false if it is
not.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
This commit is contained in:
David Herrmann 2012-07-14 13:53:52 +02:00
parent 2543f13630
commit e1095b5ef2
1 changed files with 18 additions and 0 deletions
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18
src/console.c
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@ -81,6 +81,9 @@ struct kmscon_console {
/* cursor */
unsigned int cursor_x;
unsigned int cursor_y;
/* tab ruler */
bool *tab_ruler;
};
static void cell_init(struct kmscon_console *con, struct cell *cell)
@ -432,6 +435,7 @@ void kmscon_console_unref(struct kmscon_console *con)
for (i = 0; i < con->line_num; ++i)
line_free(con->lines[i]);
free(con->lines);
free(con->tab_ruler);
free(con);
}
@ -457,6 +461,7 @@ int kmscon_console_resize(struct kmscon_console *con, unsigned int x,
struct line **cache;
unsigned int i, j, width;
int ret;
bool *tab_ruler;
if (!con || !x || !y)
return -EINVAL;
@ -472,6 +477,11 @@ int kmscon_console_resize(struct kmscon_console *con, unsigned int x,
* lines. Otherwise, if this function fails in later turns, we will have
* invalid lines in the buffer. */
if (y > con->line_num) {
tab_ruler = realloc(con->tab_ruler, sizeof(bool) * y);
if (!tab_ruler)
return -ENOMEM;
con->tab_ruler = tab_ruler;
cache = realloc(con->lines, sizeof(struct line*) * y);
if (!cache)
return -ENOMEM;
@ -516,6 +526,14 @@ int kmscon_console_resize(struct kmscon_console *con, unsigned int x,
if (con->size_y != 0 && y < con->size_y)
console_scroll_up(con, con->size_y - y);
/* reset tabs */
for (i = 0; i < y; ++i) {
if (i % 8 == 0)
con->tab_ruler[i] = true;
else
con->tab_ruler[i] = false;
}
con->size_x = x;
con->size_y = y;
con->margin_top = 0;