void modify_locmem(struct keeploc *locmem, int total) {
if (locmem->top_line > total) {
locmem->crs_line = total;
locmem->top_line = total - screen_lines() / 2;
if (locmem->top_line < 1)
locmem->top_line = 1;
} else if (locmem->crs_line > total) {
locmem->crs_line = total;
}
}
static void display(editor_t *editor, bool ansi)
{
int line = 0, lines = screen_lines() - 1;
for (vector_size_t i = editor->window_top;
i < editor->allow_edit_end && line < lines;
++i, ++line) {
text_line_t *tl = editor_line(editor, i);
if (editor->redraw || tl->redraw) {
screen_move_clear(line);
if (ansi) {
screen_puts(tl->buf, tl->size);
} else {
bool marked = i >= editor->mark_begin && i < editor->mark_end;
if (marked)
screen_puts("\033[7m", 4);
const char *last = tl->buf, *end = tl->buf + tl->size;
for (const char *ptr = tl->buf; ptr < end; ++ptr) {
if (*ptr == '\033') {
if (ptr > last)
screen_puts(last, ptr - last);
screen_puts("\033[33m*", 0);
if (marked)
screen_puts("\033[37m", 0);
else
screen_puts("\033[m", 0);
last = ptr + 1;
}
}
if (end > last) {
size_t size = end - last - contains_newline(tl);
if (size)
screen_puts(last, size);
}
if (marked)
screen_puts("\033[m", 3);
}
tl->redraw = false;
}
}
if (editor->redraw) {
for (; line < lines; ++line) {
screen_move_clear(line);
screen_puts("\033[33m~\033[m", 0);
}
}
show_status_line(editor);
screen_move(editor->current_line - editor->window_top, editor->screen_pos);
editor->redraw = false;
return;
}
pnoutrefresh(WINDOW *win,
int pminrow,
int pmincol,
int sminrow,
int smincol,
int smaxrow,
int smaxcol)
{
NCURSES_SIZE_T i, j;
NCURSES_SIZE_T m, n;
NCURSES_SIZE_T pmaxrow;
NCURSES_SIZE_T pmaxcol;
SCREEN *sp;
#if USE_SCROLL_HINTS
const int my_len = 2; /* parameterize the threshold for hardscroll */
NCURSES_SIZE_T displaced;
bool wide;
#endif
T((T_CALLED("pnoutrefresh(%p, %d, %d, %d, %d, %d, %d)"),
(void *) win, pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol));
if (win == 0)
returnCode(ERR);
if (!(win->_flags & _ISPAD))
returnCode(ERR);
sp = _nc_screen_of(win);
/* negative values are interpreted as zero */
if (pminrow < 0)
pminrow = 0;
if (pmincol < 0)
pmincol = 0;
if (sminrow < 0)
sminrow = 0;
if (smincol < 0)
smincol = 0;
pmaxrow = pminrow + smaxrow - sminrow;
pmaxcol = pmincol + smaxcol - smincol;
T((" pminrow + smaxrow - sminrow %ld, win->_maxy %ld",
(long) pmaxrow, (long) win->_maxy));
T((" pmincol + smaxcol - smincol %ld, win->_maxx %ld",
(long) pmaxcol, (long) win->_maxx));
/*
* Trim the caller's screen size back to the actual limits.
*/
if (pmaxrow > win->_maxy) {
smaxrow -= (pmaxrow - win->_maxy);
pmaxrow = pminrow + smaxrow - sminrow;
}
if (pmaxcol > win->_maxx) {
smaxcol -= (pmaxcol - win->_maxx);
pmaxcol = pmincol + smaxcol - smincol;
}
if (smaxrow >= screen_lines(sp)
|| smaxcol >= screen_columns(sp)
|| sminrow > smaxrow
|| smincol > smaxcol)
returnCode(ERR);
T(("pad being refreshed"));
#if USE_SCROLL_HINTS
if (win->_pad._pad_y >= 0) {
displaced = pminrow - win->_pad._pad_y
- (sminrow - win->_pad._pad_top);
T(("pad being shifted by %d line(s)", displaced));
} else
displaced = 0;
#endif
/*
* For pure efficiency, we'd want to transfer scrolling information
* from the pad to newscr whenever the window is wide enough that
* its update will dominate the cost of the update for the horizontal
* band of newscr that it occupies. Unfortunately, this threshold
* tends to be complex to estimate, and in any case scrolling the
* whole band and rewriting the parts outside win's image would look
* really ugly. So. What we do is consider the pad "wide" if it
* either (a) occupies the whole width of newscr, or (b) occupies
* all but at most one column on either vertical edge of the screen
* (this caters to fussy people who put boxes around full-screen
* windows). Note that changing this formula will not break any code,
* merely change the costs of various update cases.
*/
#if USE_SCROLL_HINTS
wide = (smincol < my_len && smaxcol > (NewScreen(sp)->_maxx - my_len));
#endif
for (i = pminrow, m = sminrow + win->_yoffset;
i <= pmaxrow && m <= NewScreen(sp)->_maxy;
i++, m++) {
register struct ldat *nline = &NewScreen(sp)->_line[m];
register struct ldat *oline = &win->_line[i];
for (j = pmincol, n = smincol; j <= pmaxcol; j++, n++) {
NCURSES_CH_T ch = oline->text[j];
#if USE_WIDEC_SUPPORT
/*
* Special case for leftmost character of the displayed area.
* Only half of a double-width character may be visible.
*/
if (j == pmincol
&& j > 0
&& isWidecExt(ch)) {
SetChar(ch, L(' '), AttrOf(oline->text[j - 1]));
}
#endif
if (!CharEq(ch, nline->text[n])) {
nline->text[n] = ch;
CHANGED_CELL(nline, n);
}
}
#if USE_SCROLL_HINTS
if (wide) {
int nind = m + displaced;
if (oline->oldindex < 0
|| nind < sminrow
|| nind > smaxrow) {
nind = _NEWINDEX;
} else if (displaced) {
register struct ldat *pline = &CurScreen(sp)->_line[nind];
for (j = 0; j <= my_len; j++) {
int k = NewScreen(sp)->_maxx - j;
if (pline->text[j] != nline->text[j]
|| pline->text[k] != nline->text[k]) {
nind = _NEWINDEX;
break;
}
}
}
nline->oldindex = nind;
}
#endif /* USE_SCROLL_HINTS */
oline->firstchar = oline->lastchar = _NOCHANGE;
if_USE_SCROLL_HINTS(oline->oldindex = i);
}
/*
* Clean up debris from scrolling or resizing the pad, so we do not
* accidentally pick up the index value during the next call to this
* procedure. The only rows that should have an index value are those
* that are displayed during this cycle.
*/
#if USE_SCROLL_HINTS
for (i = pminrow - 1; (i >= 0) && (win->_line[i].oldindex >= 0); i--)
win->_line[i].oldindex = _NEWINDEX;
for (i = pmaxrow + 1; (i <= win->_maxy)
&& (win->_line[i].oldindex >= 0); i++)
win->_line[i].oldindex = _NEWINDEX;
#endif
win->_begx = smincol;
win->_begy = sminrow;
if (win->_clear) {
win->_clear = FALSE;
NewScreen(sp)->_clear = TRUE;
}
/*
* Use the pad's current position, if it will be visible.
* If not, don't do anything; it's not an error.
*/
if (win->_leaveok == FALSE
&& win->_cury >= pminrow
&& win->_curx >= pmincol
&& win->_cury <= pmaxrow
&& win->_curx <= pmaxcol) {
NewScreen(sp)->_cury = win->_cury - pminrow + win->_begy + win->_yoffset;
NewScreen(sp)->_curx = win->_curx - pmincol + win->_begx;
}
NewScreen(sp)->_leaveok = win->_leaveok;
win->_flags &= ~_HASMOVED;
/*
* Update our cache of the line-numbers that we displayed from the pad.
* We will use this on subsequent calls to this function to derive
* values to stuff into 'oldindex[]' -- for scrolling optimization.
*/
win->_pad._pad_y = pminrow;
win->_pad._pad_x = pmincol;
win->_pad._pad_top = sminrow;
win->_pad._pad_left = smincol;
win->_pad._pad_bottom = smaxrow;
win->_pad._pad_right = smaxcol;
returnCode(OK);
}
