/*
* After writing text to the screen, resolve mismatch between the current
* location and any attributes that would have been set by preceding locations.
*/
void
Resolve_XMC(XtermWidget xw)
{
TScreen *screen = TScreenOf(xw);
LineData *ld;
Bool changed = False;
Char start;
Char my_attrs = CharOf(screen->xmc_attributes & XMC_FLAGS);
int row = screen->cur_row;
int col = screen->cur_col;
/* Find the preceding cell.
*/
ld = getLineData(screen, row);
if (ld->charData[col] != XMC_GLITCH) {
if (col != 0) {
col--;
} else if (!screen->xmc_inline && row != 0) {
ld = getLineData(screen, --row);
col = LineMaxCol(screen, ld);
}
}
start = (ld->attribs[col] & my_attrs);
/* Now propagate the starting state until we reach a cell which holds
* a glitch.
*/
for (;;) {
if (col < LineMaxCol(screen, ld)) {
col++;
} else if (!screen->xmc_inline && row < screen->max_row) {
col = 0;
ld = getLineData(screen, ++row);
} else
break;
if (ld->charData[col] == XMC_GLITCH)
break;
if ((ld->attribs[col] & my_attrs) != start) {
ld->attribs[col] =
CharOf(start | (ld->attribs[col] & ~my_attrs));
changed = True;
}
}
TRACE(("XMC %s (%s:%d/%d) from %d,%d to %d,%d\n",
changed ? "Ripple" : "Nochange",
BtoS(xw->flags & my_attrs),
my_attrs, start,
screen->cur_row, screen->cur_col,
row, col));
if (changed) {
ScrnUpdate(xw, screen->cur_row, 0, row + 1 - screen->cur_row,
MaxCols(screen), True);
}
}
/*
* Force a glitch on cursor movement when we're in standout mode and not at the
* end of a line.
*/
void
Jump_XMC(XtermWidget xw)
{
TScreen *screen = TScreenOf(xw);
if (!screen->move_sgr_ok
&& screen->cur_col <= LineMaxCol(screen,
getLineData(screen, screen->cur_row))) {
Mark_XMC(xw, -1);
}
}
/*
* Tab to the next stop, returning true if the cursor moved
*/
Bool
TabToNextStop(XtermWidget xw)
{
TScreen *screen = TScreenOf(xw);
int saved_column = screen->cur_col;
int next = TabNext(xw, xw->tabs, screen->cur_col);
int max = LineMaxCol(screen, getLineData(screen, screen->cur_row));
if (next > max)
next = max;
set_cur_col(screen, next);
return (screen->cur_col > saved_column);
}
/*
* moves the cursor forward n, no wraparound
*/
void
CursorForward(XtermWidget xw, int n)
{
TScreen *screen = TScreenOf(xw);
#if OPT_DEC_CHRSET
LineData *ld = getLineData(screen, screen->cur_row);
#endif
int next = screen->cur_col + n;
int max;
if (IsLeftRightMode(xw)) {
max = screen->rgt_marg;
if (screen->cur_col > max)
max = screen->max_col;
} else {
max = LineMaxCol(screen, ld);
}
if (next > max)
next = max;
set_cur_col(screen, next);
ResetWrap(screen);
}
