*/
oldlen = line[0];
lineattrs = line[oldlen + 1];
- line = srealloc(line, TSIZE * (2 + cols));
+ line = sresize(line, 2 + cols, TTYPE);
line[0] = cols;
for (i = oldlen; i < cols; i++)
line[i + 1] = ERASE_CHAR;
while ((line = delpos234(term->scrollback, 0)) != NULL) {
sfree(line);
}
+ term->tempsblines = 0;
term->alt_sblines = 0;
update_sbar(term);
}
* Allocate a new Terminal structure and initialise the fields
* that need it.
*/
- term = smalloc(sizeof(Terminal));
+ term = snew(Terminal);
term->frontend = frontend;
term->ucsdata = ucsdata;
term->cfg = *mycfg; /* STRUCTURE COPY */
term->curstype = 0;
term->screen = term->alt_screen = term->scrollback = NULL;
+ term->tempsblines = 0;
term->alt_sblines = 0;
term->disptop = 0;
term->disptext = term->dispcurs = NULL;
term->attr_mask = 0xffffffff;
term->resize_fn = NULL;
term->resize_ctx = NULL;
+ term->in_term_out = FALSE;
return term;
}
if (term->rows == -1) {
term->scrollback = newtree234(NULL);
term->screen = newtree234(NULL);
+ term->tempsblines = 0;
term->rows = 0;
}
* will take care of resizing each individual line if
* necessary. So:
*
- * - If the new screen and the old screen differ in length, we
- * must shunt some lines in from the scrollback or out to
- * the scrollback.
- *
- * - If doing that fails to provide us with enough material to
- * fill the new screen (i.e. the number of rows needed in
- * the new screen exceeds the total number in the previous
- * screen+scrollback), we must invent some blank lines to
- * cover the gap.
+ * - If the new screen is longer, we shunt lines in from temporary
+ * scrollback if possible, otherwise we add new blank lines at
+ * the bottom.
+ *
+ * - If the new screen is shorter, we remove any blank lines at
+ * the bottom if possible, otherwise shunt lines above the cursor
+ * to scrollback if possible, otherwise delete lines below the
+ * cursor.
*
* - Then, if the new scrollback length is less than the
* amount of scrollback we actually have, we must throw some
*/
sblen = count234(term->scrollback);
/* Do this loop to expand the screen if newrows > rows */
- for (i = term->rows; i < newrows; i++) {
- if (sblen > 0) {
+ assert(term->rows == count234(term->screen));
+ while (term->rows < newrows) {
+ if (term->tempsblines > 0) {
+ /* Insert a line from the scrollback at the top of the screen. */
+ assert(sblen >= term->tempsblines);
line = delpos234(term->scrollback, --sblen);
+ term->tempsblines -= 1;
+ addpos234(term->screen, line, 0);
+ term->curs.y += 1;
+ term->savecurs.y += 1;
} else {
- line = smalloc(TSIZE * (newcols + 2));
+ /* Add a new blank line at the bottom of the screen. */
+ line = snewn(newcols + 2, TTYPE);
line[0] = newcols;
for (j = 0; j < newcols; j++)
line[j + 1] = ERASE_CHAR;
line[newcols + 1] = LATTR_NORM;
+ addpos234(term->screen, line, count234(term->screen));
}
- addpos234(term->screen, line, 0);
+ term->rows += 1;
}
/* Do this loop to shrink the screen if newrows < rows */
- for (i = newrows; i < term->rows; i++) {
- line = delpos234(term->screen, 0);
- addpos234(term->scrollback, line, sblen++);
+ while (term->rows > newrows) {
+ if (term->curs.y < term->rows - 1) {
+ /* delete bottom row, unless it contains the cursor */
+ sfree(delpos234(term->screen, term->rows - 1));
+ } else {
+ /* push top row to scrollback */
+ line = delpos234(term->screen, 0);
+ addpos234(term->scrollback, line, sblen++);
+ term->tempsblines += 1;
+ term->curs.y -= 1;
+ term->savecurs.y -= 1;
+ }
+ term->rows -= 1;
}
+ assert(term->rows == newrows);
assert(count234(term->screen) == newrows);
+
+ /* Delete any excess lines from the scrollback. */
while (sblen > newsavelines) {
line = delpos234(term->scrollback, 0);
sfree(line);
sblen--;
}
+ if (sblen < term->tempsblines)
+ term->tempsblines = sblen;
assert(count234(term->scrollback) <= newsavelines);
+ assert(count234(term->scrollback) >= term->tempsblines);
term->disptop = 0;
- newdisp = smalloc(newrows * (newcols + 1) * TSIZE);
+ /* Make a new displayed text buffer. */
+ newdisp = snewn(newrows * (newcols + 1), TTYPE);
for (i = 0; i < newrows * (newcols + 1); i++)
newdisp[i] = ATTR_INVALID;
sfree(term->disptext);
term->disptext = newdisp;
term->dispcurs = NULL;
+ /* Make a new alternate screen. */
newalt = newtree234(NULL);
for (i = 0; i < newrows; i++) {
- line = smalloc(TSIZE * (newcols + 2));
+ line = snewn(newcols + 2, TTYPE);
line[0] = newcols;
for (j = 0; j < newcols; j++)
line[j + 1] = term->erase_char;
term->alt_screen = newalt;
term->alt_sblines = 0;
- term->tabs = srealloc(term->tabs, newcols * sizeof(*term->tabs));
+ term->tabs = sresize(term->tabs, newcols, unsigned char);
{
int i;
for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
}
- if (term->rows > 0)
- term->curs.y += newrows - term->rows;
+ /* Check that the cursor positions are still valid. */
+ if (term->savecurs.y < 0)
+ term->savecurs.y = 0;
+ if (term->savecurs.y >= newrows)
+ term->savecurs.y = newrows - 1;
if (term->curs.y < 0)
term->curs.y = 0;
if (term->curs.y >= newrows)
if (term->selstart.y >= topline && term->selstart.y <= botline) {
term->selstart.y++;
if (term->selstart.y > botline) {
- term->selstart.y = botline;
+ term->selstart.y = botline + 1;
term->selstart.x = 0;
}
}
if (term->selend.y >= topline && term->selend.y <= botline) {
term->selend.y++;
if (term->selend.y > botline) {
- term->selend.y = botline;
+ term->selend.y = botline + 1;
term->selend.x = 0;
}
}
while (lines > 0) {
line = delpos234(term->screen, topline);
if (sb && term->savelines > 0) {
- int sblen = sblines(term);
+ int sblen = count234(term->scrollback);
/*
* We must add this line to the scrollback. We'll
* remove a line from the top of the scrollback to
if (sblen == term->savelines) {
sblen--, line2 = delpos234(term->scrollback, 0);
} else {
- line2 = smalloc(TSIZE * (term->cols + 2));
+ line2 = snewn(term->cols + 2, TTYPE);
line2[0] = term->cols;
+ term->tempsblines += 1;
}
addpos234(term->scrollback, line, sblen);
line = line2;
term->scrolltail->botline == botline) {
term->scrolltail->lines += lines;
} else {
- newscroll = smalloc(sizeof(struct scrollregion));
+ newscroll = snew(struct scrollregion);
newscroll->topline = topline;
newscroll->botline = botline;
newscroll->lines = lines;
{
pos start, end;
int erase_lattr;
+ int erasing_lines_from_top = 0;
if (line_only) {
start.y = term->curs.y;
if (start.y == 0 && start.x == 0 && end.y == term->rows)
term_invalidate(term);
- if (term->cfg.erase_to_scrollback &&
- start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr) {
+ /* Lines scrolled away shouldn't be brought back on if the terminal
+ * resizes. */
+ if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
+ erasing_lines_from_top = 1;
+
+ if (term->cfg.erase_to_scrollback && erasing_lines_from_top) {
/* If it's a whole number of lines, starting at the top, and
* we're fully erasing them, erase by scrolling and keep the
* lines in the scrollback. */
ldata = lineptr(start.y);
}
}
+
+ /* After an erase of lines from the top of the screen, we shouldn't
+ * bring the lines back again if the terminal enlarges (since the user or
+ * application has explictly thrown them away). */
+ if (erasing_lines_from_top && !(term->alt_which))
+ term->tempsblines = 0;
}
/*
if (!term->cfg.no_remote_resize)
request_resize(term->frontend, state ? 132 : 80, term->rows);
term->reset_132 = state;
+ term->alt_t = term->marg_t = 0;
+ term->alt_b = term->marg_b = term->rows - 1;
+ move(term, 0, 0, 0);
+ erase_lots(term, FALSE, TRUE, TRUE);
break;
case 5: /* reverse video */
/*
ticks = GETTICKCOUNT();
if (!term->beep_overloaded) {
- newbeep = smalloc(sizeof(struct beeptime));
+ newbeep = snew(struct beeptime);
newbeep->ticks = ticks;
newbeep->next = NULL;
if (!term->beephead)
int buflen; /* amount of memory allocated to workbuf */
buflen = 5120; /* Default size */
- workbuf = smalloc(buflen * sizeof(wchar_t));
+ workbuf = snewn(buflen, wchar_t);
wbptr = workbuf; /* start filling here */
old_top_x = top.x; /* needed for rect==1 */
for (p = cbuf; *p; p++) {
/* Enough overhead for trailing NL and nul */
if (wblen >= buflen - 16) {
- workbuf =
- srealloc(workbuf,
- sizeof(wchar_t) * (buflen += 100));
+ buflen += 100;
+ workbuf = sresize(workbuf, buflen, wchar_t);
wbptr = workbuf + wblen;
}
wblen++;
if (term->paste_buffer)
sfree(term->paste_buffer);
term->paste_pos = term->paste_hold = term->paste_len = 0;
- term->paste_buffer = smalloc(len * sizeof(wchar_t));
+ term->paste_buffer = snewn(len, wchar_t);
p = q = data;
while (p < data + len) {
bufchain_add(&term->inbuf, data, len);
+ if (!term->in_term_out) {
+ term->in_term_out = TRUE;
+ term_blink(term, 1);
+ term_out(term);
+ term->in_term_out = FALSE;
+ }
+
/*
* term_out() always completely empties inbuf. Therefore,
* there's no reason at all to return anything other than zero
projects / u / mdw / putty / blobdiff