}
/*
+ * Get the number of lines in the scrollback.
+ */
+static int sblines(Terminal *term)
+{
+ int sblines = count234(term->scrollback);
+ if (term->cfg.erase_to_scrollback &&
+ term->alt_which && term->alt_screen) {
+ sblines += term->alt_sblines;
+ }
+ return sblines;
+}
+
+/*
* Retrieve a line of the screen or of the scrollback, according to
* whether the y coordinate is non-negative or negative
* (respectively).
whichtree = term->screen;
treeindex = y;
} else {
- whichtree = term->scrollback;
- treeindex = y + count234(term->scrollback);
+ int altlines = 0;
+ if (term->cfg.erase_to_scrollback &&
+ term->alt_which && term->alt_screen) {
+ altlines = term->alt_sblines;
+ }
+ if (y < -altlines) {
+ whichtree = term->scrollback;
+ treeindex = y + altlines + count234(term->scrollback);
+ } else {
+ whichtree = term->alt_screen;
+ treeindex = y + term->alt_sblines;
+ /* treeindex = y + count234(term->alt_screen); */
+ }
}
line = index234(whichtree, treeindex);
while ((line = delpos234(term->scrollback, 0)) != NULL) {
sfree(line);
}
+ term->alt_sblines = 0;
update_sbar(term);
}
term->curstype = 0;
term->screen = term->alt_screen = term->scrollback = NULL;
+ term->alt_sblines = 0;
term->disptop = 0;
term->disptext = term->dispcurs = NULL;
term->tabs = NULL;
freetree234(term->alt_screen);
}
term->alt_screen = newalt;
+ term->alt_sblines = 0;
term->tabs = srealloc(term->tabs, newcols * sizeof(*term->tabs));
{
resize_fn(resize_ctx, term->cols, term->rows);
}
+/* Find the bottom line on the screen that has any content.
+ * If only the top line has content, returns 0.
+ * If no lines have content, return -1.
+ */
+static int find_last_nonempty_line(Terminal * term, tree234 * screen)
+{
+ int i;
+ for (i = count234(screen) - 1; i >= 0; i--) {
+ unsigned long *line = index234(screen, i);
+ int j;
+ int cols = line[0];
+ for (j = 0; j < cols; j++) {
+ if (line[j + 1] != term->erase_char) break;
+ }
+ if (j != cols) break;
+ }
+ return i;
+}
+
/*
* Swap screens. If `reset' is TRUE and we have been asked to
* switch to the alternate screen, we must bring most of its
ttr = term->alt_screen;
term->alt_screen = term->screen;
term->screen = ttr;
+ term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
t = term->curs.x;
if (!reset && !keep_cur_pos)
term->curs.x = term->alt_x;
*/
static void update_sbar(Terminal *term)
{
- int nscroll;
-
- nscroll = count234(term->scrollback);
-
+ int nscroll = sblines(term);
set_sbar(term->frontend, nscroll + term->rows,
nscroll + term->disptop, term->rows);
}
while (lines > 0) {
line = delpos234(term->screen, topline);
if (sb && term->savelines > 0) {
- int sblen = count234(term->scrollback);
+ int sblen = sblines(term);
/*
* We must add this line to the scrollback. We'll
* remove a line from the top of the scrollback to
* If the scroll is on the same area as the last scroll in the list,
* merge them.
*/
-void save_scroll(Terminal *term, int topline, int botline, int lines)
+static void save_scroll(Terminal *term, int topline, int botline, int lines)
{
struct scrollregion *newscroll;
if (term->scrolltail &&
{
pos start, end;
int erase_lattr;
- unsigned long *ldata;
if (line_only) {
start.y = term->curs.y;
if (start.y == 0 && start.x == 0 && end.y == term->rows)
term_invalidate(term);
- ldata = lineptr(start.y);
- while (poslt(start, end)) {
- if (start.x == term->cols) {
- if (!erase_lattr)
- ldata[start.x] &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
- else
- ldata[start.x] = LATTR_NORM;
- } else {
- ldata[start.x] = term->erase_char;
- }
- if (incpos(start) && start.y < term->rows)
- ldata = lineptr(start.y);
+ if (term->cfg.erase_to_scrollback &&
+ start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr) {
+ /* 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. */
+ int scrolllines = end.y;
+ if (end.y == term->rows) {
+ /* Shrink until we find a non-empty row.*/
+ scrolllines = find_last_nonempty_line(term, term->screen) + 1;
+ }
+ if (scrolllines > 0)
+ scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
+ fix_cpos;
+ } else {
+ unsigned long *ldata = lineptr(start.y);
+ while (poslt(start, end)) {
+ if (start.x == term->cols) {
+ if (!erase_lattr)
+ ldata[start.x] &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
+ else
+ ldata[start.x] = LATTR_NORM;
+ } else {
+ ldata[start.x] = term->erase_char;
+ }
+ if (incpos(start) && start.y < term->rows)
+ ldata = lineptr(start.y);
+ }
}
}
*/
void term_scroll(Terminal *term, int rel, int where)
{
- int sbtop = -count234(term->scrollback);
+ int sbtop = -sblines(term);
#ifdef OPTIMISE_SCROLL
int olddisptop = term->disptop;
int shift;
void term_copyall(Terminal *term)
{
pos top;
- top.y = -count234(term->scrollback);
+ top.y = -sblines(term);
top.x = 0;
clipme(term, top, term->curs, 0);
}
{
unsigned long *ldata;
short wvalue;
- int topy = -count234(term->scrollback);
+ int topy = -sblines(term);
ldata = lineptr(p.y);
fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
for (i = 0; i < tlen; i++)
- fprintf(stderr, " %04x", text[i]);
+ fprintf(stderr, " %04x", (unsigned)text[i]);
fprintf(stderr, "\n");
#endif
if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
text[0] >= 0x20 && text[0] <= 0x7e) {
/* ASCII chars + Control */
- if (text[0] >= 0x40 && text[0] <= 0x5f ||
- text[0] >= 0x61 && text[0] <= 0x7a)
+ if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
+ (text[0] >= 0x61 && text[0] <= 0x7a))
text[0] &= 0x1f;
else {
/*
case PK_KP7: c = 'y'; break;
case PK_KP8: c = 'k'; break;
case PK_KP9: c = 'u'; break;
+ default: break; /* else gcc warns `enum value not used' */
}
if (c != 0) {
if (c != '.') {
case PK_PF2: xkey = 'Q'; break;
case PK_PF3: xkey = 'R'; break;
case PK_PF4: xkey = 'S'; break;
+ default: break; /* else gcc warns `enum value not used' */
}
}
if (term->app_keypad_keys && !term->cfg.no_applic_k) {
case PK_KP9: xkey = 'y'; break;
case PK_KPDECIMAL: xkey = 'n'; break;
case PK_KPENTER: xkey = 'M'; break;
+ default: break; /* else gcc warns `enum value not used' */
}
if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
/*
break;
case PK_KPMINUS: xkey = 'm'; break;
case PK_KPCOMMA: xkey = 'l'; break;
+ default: break; /* else gcc warns `enum value not used' */
}
}
}
case PK_KP7: keysym = PK_HOME; break;
case PK_KP8: keysym = PK_UP; break;
case PK_KP9: keysym = PK_PAGEUP; break;
+ default: break; /* else gcc warns `enum value not used' */
}
}
}
*p++ = 0x0a;
goto done;
}
+ default: break; /* else gcc warns `enum value not used' */
}
/* SCO function keys and editing keys */
case PK_END: xkey = 'F'; break;
case PK_PAGEUP: xkey = 'I'; break;
case PK_PAGEDOWN: xkey = 'G'; break;
+ default: break; /* else gcc warns `enum value not used' */
}
p += sprintf((char *) p, "\x1B[%c", xkey);
}
case PK_END: keysym = PK_PAGEUP; break;
case PK_PAGEUP: keysym = PK_DELETE; break;
case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
+ default: break; /* else gcc warns `enum value not used' */
}
}
case PK_END: xkey = 'E'; break;
case PK_PAGEUP: xkey = 'I'; break;
case PK_PAGEDOWN: xkey = 'G'; break;
+ default: break; /* else gcc warns `enum value not used' */
}
p += sprintf((char *) p, "\x1B%c", xkey);
goto done;
case PK_END: code = 4; break;
case PK_PAGEUP: code = 5; break;
case PK_PAGEDOWN: code = 6; break;
+ default: break; /* else gcc warns `enum value not used' */
}
p += sprintf((char *) p, "\x1B[%d~", code);
goto done;
case PK_RIGHT: xkey = 'C'; break;
case PK_LEFT: xkey = 'D'; break;
case PK_REST: xkey = 'G'; break; /* centre key on number pad */
+ default: break; /* else gcc warns `enum value not used' */
}
if (term->vt52_mode)
p += sprintf((char *) p, "\x1B%c", xkey);
#if 0
fprintf(stderr, "sending %d unichars:", tlen);
for (i = 0; i < tlen; i++)
- fprintf(stderr, " %04x", text[i]);
+ fprintf(stderr, " %04x", (unsigned) text[i]);
fprintf(stderr, "\n");
#endif
luni_send(term->ldisc, text, tlen, 1);
/*
* from_backend(), to get data from the backend for the terminal.
*/
-int from_backend(void *vterm, int is_stderr, char *data, int len)
+int from_backend(void *vterm, int is_stderr, const char *data, int len)
{
Terminal *term = (Terminal *)vterm;
projects / u / mdw / putty / blobdiff