static void resizeline(Terminal *, termline *, int);
static termline *lineptr(Terminal *, int, int, int);
static void unlineptr(termline *);
+static void check_line_size(Terminal *, termline *);
static void do_paint(Terminal *, Context, int);
static void erase_lots(Terminal *, int, int, int);
static int find_last_nonempty_line(Terminal *, tree234 *);
}
assert(line != NULL);
- resizeline(term, line, term->cols);
- /* FIXME: should we sort the compressed scrollback out here? */
+ /*
+ * Here we resize lines to _at least_ the right length, but we
+ * don't truncate them. Truncation is done as a side effect of
+ * modifying the line.
+ *
+ * The point of this policy is to try to arrange that resizing the
+ * terminal window repeatedly - e.g. successive steps in an X11
+ * opaque window-resize drag, or resizing as a side effect of
+ * retiling by tiling WMs such as xmonad - does not throw away
+ * data gratuitously. Specifically, we want a sequence of resize
+ * operations with no terminal output between them to have the
+ * same effect as a single resize to the ultimate terminal size,
+ * and also (for the case in which xmonad narrows a window that's
+ * scrolling things) we want scrolling up new text at the bottom
+ * of a narrowed window to avoid truncating lines further up when
+ * the window is re-widened.
+ */
+ if (term->cols > line->cols)
+ resizeline(term, line, term->cols);
return line;
}
#define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
#define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
+/*
+ * Coerce a termline to the terminal's current width. Unlike the
+ * optional resize in lineptr() above, this is potentially destructive
+ * of text, since it can shrink as well as grow the line.
+ *
+ * We call this whenever a termline is actually going to be modified.
+ * Helpfully, putting a single call to this function in check_boundary
+ * deals with _nearly_ all such cases, leaving only a few things like
+ * bulk erase and ESC#8 to handle separately.
+ */
+static void check_line_size(Terminal *term, termline *line)
+{
+ if (term->cols != line->cols) /* trivial optimisation */
+ resizeline(term, line, term->cols);
+}
+
static void term_schedule_tblink(Terminal *term);
static void term_schedule_cblink(Terminal *term);
term->alt_which = 0;
term_print_finish(term);
term->xterm_mouse = 0;
+ term->xterm_extended_mouse = 0;
+ term->urxvt_extended_mouse = 0;
set_raw_mouse_mode(term->frontend, FALSE);
term->bracketed_paste = FALSE;
{
{
power_on(term, clear);
if (term->ldisc) /* cause ldisc to notice changes */
- ldisc_send(term->ldisc, NULL, 0, 0);
+ ldisc_echoedit_update(term->ldisc);
term->disptop = 0;
deselect(term);
term_update(term);
void term_clrsb(Terminal *term)
{
unsigned char *line;
+ int i;
+
+ /*
+ * Scroll forward to the current screen, if we were back in the
+ * scrollback somewhere until now.
+ */
term->disptop = 0;
+
+ /*
+ * Clear the actual scrollback.
+ */
while ((line = delpos234(term->scrollback, 0)) != NULL) {
sfree(line); /* this is compressed data, not a termline */
}
+
+ /*
+ * When clearing the scrollback, we also truncate any termlines on
+ * the current screen which have remembered data from a previous
+ * larger window size. Rationale: clearing the scrollback is
+ * sometimes done to protect privacy, so the user intention is
+ * specifically that we should not retain evidence of what
+ * previously happened in the terminal, and that ought to include
+ * evidence to the right as well as evidence above.
+ */
+ for (i = 0; i < term->rows; i++)
+ check_line_size(term, scrlineptr(i));
+
+ /*
+ * There are now no lines of real scrollback which can be pulled
+ * back into the screen by a resize, and no lines of the alternate
+ * screen which should be displayed as if part of the scrollback.
+ */
term->tempsblines = 0;
term->alt_sblines = 0;
+
+ /*
+ * Update the scrollbar to reflect the new state of the world.
+ */
update_sbar(term);
}
term->cblink_pending = term->tblink_pending = FALSE;
term->paste_buffer = NULL;
term->paste_len = 0;
- term->last_paste = 0;
bufchain_init(&term->inbuf);
bufchain_init(&term->printer_buf);
term->printing = term->only_printing = FALSE;
static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
{
termline *line;
- int i, seltop;
+ int i, seltop, scrollwinsize;
#ifdef OPTIMISE_SCROLL
int olddisptop, shift;
#endif /* OPTIMISE_SCROLL */
olddisptop = term->disptop;
shift = lines;
#endif /* OPTIMISE_SCROLL */
+
+ scrollwinsize = botline - topline + 1;
+
if (lines < 0) {
- while (lines < 0) {
+ lines = -lines;
+ if (lines > scrollwinsize)
+ lines = scrollwinsize;
+ while (lines-- > 0) {
line = delpos234(term->screen, botline);
resizeline(term, line, term->cols);
for (i = 0; i < term->cols; i++)
term->selend.x = 0;
}
}
-
- lines++;
}
} else {
- while (lines > 0) {
+ if (lines > scrollwinsize)
+ lines = scrollwinsize;
+ while (lines-- > 0) {
line = delpos234(term->screen, topline);
#ifdef TERM_CC_DIAGS
cc_check(line);
}
}
}
-
- lines--;
}
}
#ifdef OPTIMISE_SCROLL
return;
ldata = scrlineptr(y);
+ check_line_size(term, ldata);
if (x == term->cols) {
ldata->lattr &= ~LATTR_WRAPPED2;
} else {
} else {
termline *ldata = scrlineptr(start.y);
while (poslt(start, end)) {
+ check_line_size(term, ldata);
if (start.x == term->cols) {
if (!erase_lattr)
ldata->lattr &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
{
int dir = (n < 0 ? -1 : +1);
int m, j;
- pos cursplus;
+ pos eol;
termline *ldata;
n = (n < 0 ? -n : n);
if (n > term->cols - term->curs.x)
n = term->cols - term->curs.x;
m = term->cols - term->curs.x - n;
- cursplus.y = term->curs.y;
- cursplus.x = term->curs.x + n;
- check_selection(term, term->curs, cursplus);
+
+ /*
+ * We must de-highlight the selection if it overlaps any part of
+ * the region affected by this operation, i.e. the region from the
+ * current cursor position to end-of-line, _unless_ the entirety
+ * of the selection is going to be moved to the left or right by
+ * this operation but otherwise unchanged, in which case we can
+ * simply move the highlight with the text.
+ */
+ eol.y = term->curs.y;
+ eol.x = term->cols;
+ if (poslt(term->curs, term->selend) && poslt(term->selstart, eol)) {
+ pos okstart = term->curs;
+ pos okend = eol;
+ if (dir > 0) {
+ /* Insertion: n characters at EOL will be splatted. */
+ okend.x -= n;
+ } else {
+ /* Deletion: n characters at cursor position will be splatted. */
+ okstart.x += n;
+ }
+ if (posle(okstart, term->selstart) && posle(term->selend, okend)) {
+ /* Selection is contained entirely in the interval
+ * [okstart,okend), so we need only adjust the selection
+ * bounds. */
+ term->selstart.x += dir * n;
+ term->selend.x += dir * n;
+ assert(term->selstart.x >= term->curs.x);
+ assert(term->selstart.x < term->cols);
+ assert(term->selend.x > term->curs.x);
+ assert(term->selend.x <= term->cols);
+ } else {
+ /* Selection is not wholly contained in that interval, so
+ * we must unhighlight it. */
+ deselect(term);
+ }
+ }
+
check_boundary(term, term->curs.x, term->curs.y);
if (dir < 0)
check_boundary(term, term->curs.x + n, term->curs.y);
case 10: /* DECEDM: set local edit mode */
term->term_editing = state;
if (term->ldisc) /* cause ldisc to notice changes */
- ldisc_send(term->ldisc, NULL, 0, 0);
+ ldisc_echoedit_update(term->ldisc);
break;
case 25: /* DECTCEM: enable/disable cursor */
compatibility2(OTHER, VT220);
compatibility(OTHER);
deselect(term);
swap_screen(term, term->no_alt_screen ? 0 : state, FALSE, FALSE);
- term->disptop = 0;
+ if (term->scroll_on_disp)
+ term->disptop = 0;
break;
case 1000: /* xterm mouse 1 (normal) */
term->xterm_mouse = state ? 1 : 0;
term->xterm_mouse = state ? 2 : 0;
set_raw_mouse_mode(term->frontend, state);
break;
+ case 1006: /* xterm extended mouse */
+ term->xterm_extended_mouse = state ? 1 : 0;
+ break;
+ case 1015: /* urxvt extended mouse */
+ term->urxvt_extended_mouse = state ? 1 : 0;
+ break;
case 1047: /* alternate screen */
compatibility(OTHER);
deselect(term);
swap_screen(term, term->no_alt_screen ? 0 : state, TRUE, TRUE);
- term->disptop = 0;
+ if (term->scroll_on_disp)
+ term->disptop = 0;
break;
case 1048: /* save/restore cursor */
if (!term->no_alt_screen)
swap_screen(term, term->no_alt_screen ? 0 : state, TRUE, FALSE);
if (!state && !term->no_alt_screen)
save_cursor(term, state);
- term->disptop = 0;
+ if (term->scroll_on_disp)
+ term->disptop = 0;
break;
case 2004: /* xterm bracketed paste */
term->bracketed_paste = state ? TRUE : FALSE;
case 12: /* SRM: set echo mode */
term->term_echoing = !state;
if (term->ldisc) /* cause ldisc to notice changes */
- ldisc_send(term->ldisc, NULL, 0, 0);
+ ldisc_echoedit_update(term->ldisc);
break;
case 20: /* LNM: Return sends ... */
term->cr_lf_return = state;
term->curs.x = 0;
term->wrapnext = FALSE;
seen_disp_event(term);
- term->paste_hold = 0;
if (term->crhaslf) {
if (term->curs.y == term->marg_b)
if (has_compat(SCOANSI)) {
move(term, 0, 0, 0);
erase_lots(term, FALSE, FALSE, TRUE);
- term->disptop = 0;
+ if (term->scroll_on_disp)
+ term->disptop = 0;
term->wrapnext = FALSE;
seen_disp_event(term);
break;
term->curs.x = 0;
term->wrapnext = FALSE;
seen_disp_event(term);
- term->paste_hold = 0;
if (term->logctx)
logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
break;
compatibility(VT100);
power_on(term, TRUE);
if (term->ldisc) /* cause ldisc to notice changes */
- ldisc_send(term->ldisc, NULL, 0, 0);
+ ldisc_echoedit_update(term->ldisc);
if (term->reset_132) {
if (!term->no_remote_resize)
request_resize(term->frontend, 80, term->rows);
term->reset_132 = 0;
}
- term->disptop = 0;
+ if (term->scroll_on_disp)
+ term->disptop = 0;
seen_disp_event(term);
break;
case 'H': /* HTS: set a tab */
for (i = 0; i < term->rows; i++) {
ldata = scrlineptr(i);
+ check_line_size(term, ldata);
for (j = 0; j < term->cols; j++) {
copy_termchar(ldata, j,
&term->basic_erase_char);
}
ldata->lattr = LATTR_NORM;
}
- term->disptop = 0;
+ if (term->scroll_on_disp)
+ term->disptop = 0;
seen_disp_event(term);
scrtop.x = scrtop.y = 0;
scrbot.x = 0;
compatibility(VT100);
{
int nlattr;
+ termline *ldata;
switch (ANSI(c, term->esc_query)) {
case ANSI('3', '#'): /* DECDHL: 2*height, top */
nlattr = LATTR_WIDE;
break;
}
- scrlineptr(term->curs.y)->lattr = nlattr;
+ ldata = scrlineptr(term->curs.y);
+ check_line_size(term, ldata);
+ ldata->lattr = nlattr;
}
break;
/* GZD4: G0 designate 94-set */
erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
}
}
- term->disptop = 0;
+ if (term->scroll_on_disp)
+ term->disptop = 0;
seen_disp_event(term);
break;
case 'K': /* EL: erase line or parts of it */
break;
case 'J':
erase_lots(term, FALSE, FALSE, TRUE);
- term->disptop = 0;
+ if (term->scroll_on_disp)
+ term->disptop = 0;
break;
case 'K':
erase_lots(term, TRUE, FALSE, TRUE);
/* compatibility(ATARI) */
move(term, 0, 0, 0);
erase_lots(term, FALSE, FALSE, TRUE);
- term->disptop = 0;
+ if (term->scroll_on_disp)
+ term->disptop = 0;
break;
case 'L':
/* compatibility(ATARI) */
case 'd':
/* compatibility(ATARI) */
erase_lots(term, FALSE, TRUE, FALSE);
- term->disptop = 0;
+ if (term->scroll_on_disp)
+ term->disptop = 0;
break;
case 'e':
/* compatibility(ATARI) */
else
break;
} else {
- if (ldata->lattr & LATTR_WRAPPED) {
+ if (p.y+1 < term->rows &&
+ (ldata->lattr & LATTR_WRAPPED)) {
termline *ldata2;
ldata2 = lineptr(p.y+1);
if (wordtype(term, UCSGET(ldata2->chars, 0))
}
}
+static void term_paste_callback(void *vterm)
+{
+ Terminal *term = (Terminal *)vterm;
+
+ if (term->paste_len == 0)
+ return;
+
+ while (term->paste_pos < term->paste_len) {
+ int n = 0;
+ while (n + term->paste_pos < term->paste_len) {
+ if (term->paste_buffer[term->paste_pos + n++] == '\015')
+ break;
+ }
+ if (term->ldisc)
+ luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
+ term->paste_pos += n;
+
+ if (term->paste_pos < term->paste_len) {
+ queue_toplevel_callback(term_paste_callback, term);
+ return;
+ }
+ }
+ sfree(term->paste_buffer);
+ term->paste_buffer = NULL;
+ term->paste_len = 0;
+}
+
void term_do_paste(Terminal *term)
{
wchar_t *data;
if (term->paste_buffer)
sfree(term->paste_buffer);
- term->paste_pos = term->paste_hold = term->paste_len = 0;
+ term->paste_pos = term->paste_len = 0;
term->paste_buffer = snewn(len + 12, wchar_t);
if (term->bracketed_paste) {
if (term->paste_buffer)
sfree(term->paste_buffer);
term->paste_buffer = 0;
- term->paste_pos = term->paste_hold = term->paste_len = 0;
+ term->paste_pos = term->paste_len = 0;
}
}
get_clip(term->frontend, NULL, NULL);
+
+ queue_toplevel_callback(term_paste_callback, term);
}
void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
*/
if (raw_mouse &&
(term->selstate != ABOUT_TO) && (term->selstate != DRAGGING)) {
- int encstate = 0, r, c;
- char abuf[16];
+ int encstate = 0, r, c, wheel;
+ char abuf[32];
+ int len = 0;
if (term->ldisc) {
switch (braw) {
case MBT_LEFT:
- encstate = 0x20; /* left button down */
+ encstate = 0x00; /* left button down */
+ wheel = FALSE;
break;
case MBT_MIDDLE:
- encstate = 0x21;
+ encstate = 0x01;
+ wheel = FALSE;
break;
case MBT_RIGHT:
- encstate = 0x22;
+ encstate = 0x02;
+ wheel = FALSE;
break;
case MBT_WHEEL_UP:
- encstate = 0x60;
+ encstate = 0x40;
+ wheel = TRUE;
break;
case MBT_WHEEL_DOWN:
- encstate = 0x61;
+ encstate = 0x41;
+ wheel = TRUE;
break;
- default: break; /* placate gcc warning about enum use */
+ default:
+ return;
}
- switch (a) {
+ if (wheel) {
+ /* For mouse wheel buttons, we only ever expect to see
+ * MA_CLICK actions, and we don't try to keep track of
+ * the buttons being 'pressed' (since without matching
+ * click/release pairs that's pointless). */
+ if (a != MA_CLICK)
+ return;
+ } else switch (a) {
case MA_DRAG:
if (term->xterm_mouse == 1)
return;
encstate += 0x20;
break;
case MA_RELEASE:
- encstate = 0x23;
+ /* If multiple extensions are enabled, the xterm 1006 is used, so it's okay to check for only that */
+ if (!term->xterm_extended_mouse)
+ encstate = 0x03;
term->mouse_is_down = 0;
break;
case MA_CLICK:
return;
term->mouse_is_down = braw;
break;
- default: break; /* placate gcc warning about enum use */
+ default:
+ return;
}
if (shift)
encstate += 0x04;
if (ctrl)
encstate += 0x10;
- r = y + 33;
- c = x + 33;
-
- sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
- ldisc_send(term->ldisc, abuf, 6, 0);
+ r = y + 1;
+ c = x + 1;
+
+ /* Check the extensions in decreasing order of preference. Encoding the release event above assumes that 1006 comes first. */
+ if (term->xterm_extended_mouse) {
+ len = sprintf(abuf, "\033[<%d;%d;%d%c", encstate, c, r, a == MA_RELEASE ? 'm' : 'M');
+ } else if (term->urxvt_extended_mouse) {
+ len = sprintf(abuf, "\033[%d;%d;%dM", encstate + 32, c, r);
+ } else if (c <= 223 && r <= 223) {
+ len = sprintf(abuf, "\033[M%c%c%c", encstate + 32, c + 32, r + 32);
+ }
+ ldisc_send(term->ldisc, abuf, len, 0);
}
return;
}
request_paste(term->frontend);
}
+ /*
+ * Since terminal output is suppressed during drag-selects, we
+ * should make sure to write any pending output if one has just
+ * finished.
+ */
+ if (term->selstate != DRAGGING)
+ term_out(term);
term_update(term);
}
term->paste_len = 0;
}
-int term_paste_pending(Terminal *term)
-{
- return term->paste_len != 0;
-}
-
-void term_paste(Terminal *term)
-{
- long now, paste_diff;
-
- if (term->paste_len == 0)
- return;
-
- /* Don't wait forever to paste */
- if (term->paste_hold) {
- now = GETTICKCOUNT();
- paste_diff = now - term->last_paste;
- if (paste_diff >= 0 && paste_diff < 450)
- return;
- }
- term->paste_hold = 0;
-
- while (term->paste_pos < term->paste_len) {
- int n = 0;
- while (n + term->paste_pos < term->paste_len) {
- if (term->paste_buffer[term->paste_pos + n++] == '\015')
- break;
- }
- if (term->ldisc)
- luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
- term->paste_pos += n;
-
- if (term->paste_pos < term->paste_len) {
- term->paste_hold = 1;
- return;
- }
- }
- sfree(term->paste_buffer);
- term->paste_buffer = NULL;
- term->paste_len = 0;
-}
-
static void deselect(Terminal *term)
{
term->selstate = NO_SELECTION;
{
deselect(term);
term_update(term);
+
+ /*
+ * Since terminal output is suppressed during drag-selects, we
+ * should make sure to write any pending output if one has just
+ * finished.
+ */
+ if (term->selstate != DRAGGING)
+ term_out(term);
}
int term_ldisc(Terminal *term, int option)