/*
* ESC & a <col> M
*
* Set right margin. The right margin is set to the *right* edge of the
* specified column, so we need to add 1 to the column number.
*/
static int
set_right_margin(pcl_args_t * pargs, pcl_state_t * pcs)
{
coord rmarg = (uint_arg(pargs) + 1) * pcl_hmi(pcs);
if (rmarg > pcs->xfm_state.pd_size.x)
rmarg = pcs->xfm_state.pd_size.x;
if (rmarg > pcs->margins.left) {
pcs->margins.right = rmarg;
if (pcs->cap.x > rmarg)
pcl_set_cap_x(pcs, rmarg, false, false);
}
return 0;
}
/*
* HT
*
* Tabs occur at ever 8 columns, measure from the left text margin.
*/
static int
cmd_HT(pcl_args_t * pargs, /* ignored */
pcl_state_t * pcs)
{
coord x = pcs->cap.x - pcs->margins.left;
coord tab;
if (x < 0)
x = -x;
else if ((tab = 8 * pcl_hmi(pcs)) > 0)
x = tab - (x % tab);
else
x = 0L;
pcl_set_cap_x(pcs, x, true, true);
pcs->cursor_moved = true;
return 0;
}
/*
* ESC & a <col> L
*
* Set left margin.
*/
static int
set_left_margin(pcl_args_t * pargs, pcl_state_t * pcs)
{
coord lmarg = uint_arg(pargs) * pcl_hmi(pcs);
/* adjust underlining if the left margin passes to the right of
the underline start position */
if ((pcs->underline_enabled) && (lmarg > pcs->underline_start.x))
pcs->underline_start.x = lmarg;
if (lmarg < pcs->margins.right) {
pcs->margins.left = lmarg;
if (pcs->cap.x < lmarg)
pcl_set_cap_x(pcs, lmarg, false, false);
}
return 0;
}
/*
* ESC & a <cols> C
*/
static int
horiz_cursor_pos_columns(pcl_args_t * pargs, pcl_state_t * pcs)
{
do_horiz_motion(pargs, pcs, pcl_hmi(pcs), false);
return 0;
}
