/*
* 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);
}
}
static void
repaint_line(XtermWidget xw, unsigned newChrSet)
{
TScreen *screen = TScreenOf(xw);
LineData *ld;
int curcol = screen->cur_col;
int currow = screen->cur_row;
int width = MaxCols(screen);
unsigned len = (unsigned) width;
assert(width > 0);
/*
* Ignore repetition.
*/
if (!IsLeftRightMode(xw)
&& (ld = getLineData(screen, currow)) != 0) {
unsigned oldChrSet = GetLineDblCS(ld);
if (oldChrSet != newChrSet) {
TRACE(("repaint_line(%2d,%2d) (%s -> %s)\n", currow, screen->cur_col,
visibleDblChrset(oldChrSet),
visibleDblChrset(newChrSet)));
HideCursor();
/* If switching from single-width, keep the cursor in the visible part
* of the line.
*/
if (CSET_DOUBLE(newChrSet)) {
width /= 2;
if (curcol > width)
curcol = width;
}
/*
* ScrnRefresh won't paint blanks for us if we're switching between a
* single-size and double-size font. So we paint our own.
*/
ClearCurBackground(xw,
currow,
0,
1,
len,
(unsigned) LineFontWidth(screen, ld));
SetLineDblCS(ld, newChrSet);
set_cur_col(screen, 0);
ScrnUpdate(xw, currow, 0, 1, (int) len, True);
set_cur_col(screen, curcol);
}
}
}
