8 #define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
9 #define CL_VT100 0x0002 /* VT100 */
10 #define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
11 #define CL_VT102 0x0008 /* VT102 */
12 #define CL_VT220 0x0010 /* VT220 */
13 #define CL_VT320 0x0020 /* VT320 */
14 #define CL_VT420 0x0040 /* VT420 */
15 #define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
16 #define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
17 #define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
18 #define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
19 #define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
21 #define TM_ANSIMIN (CL_ANSIMIN)
22 #define TM_VT100 (CL_ANSIMIN|CL_VT100)
23 #define TM_VT100AVO (TM_VT100|CL_VT100AVO)
24 #define TM_VT102 (TM_VT100AVO|CL_VT102)
25 #define TM_VT220 (TM_VT102|CL_VT220)
26 #define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
27 #define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
29 #define TM_PUTTY (0xFFFF)
31 #define compatibility(x) \
32 if ( ((CL_##x)&compatibility_level) == 0 ) { \
36 #define compatibility2(x,y) \
37 if ( ((CL_##x|CL_##y)&compatibility_level) == 0 ) { \
42 #define has_compat(x) ( ((CL_##x)&compatibility_level) != 0 )
44 static int compatibility_level
= TM_PUTTY
;
47 static unsigned long *text
; /* buffer of text on terminal screen */
48 static unsigned long *scrtop
; /* top of working screen */
49 static unsigned long *disptop
; /* top of displayed screen */
50 static unsigned long *sbtop
; /* top of scrollback */
51 static unsigned long *sbbot
; /* furthest extent of scrollback */
52 static unsigned long *cpos
; /* cursor position (convenience) */
53 static unsigned long *disptext
; /* buffer of text on real screen */
54 static unsigned long *wanttext
; /* buffer of text we want on screen */
55 static unsigned long *alttext
; /* buffer of text on alt. screen */
57 static unsigned char *selspace
; /* buffer for building selections in */
59 #define TSIZE (sizeof(*text))
60 #define fix_cpos do { cpos = scrtop + curs_y * (cols+1) + curs_x; } while(0)
62 static unsigned long curr_attr
, save_attr
;
63 static unsigned long erase_char
= ERASE_CHAR
;
65 static int curs_x
, curs_y
; /* cursor */
66 static int save_x
, save_y
; /* saved cursor position */
67 static int marg_t
, marg_b
; /* scroll margins */
68 static int dec_om
; /* DEC origin mode flag */
69 static int wrap
, wrapnext
; /* wrap flags */
70 static int insert
; /* insert-mode flag */
71 static int cset
; /* 0 or 1: which char set */
72 static int save_cset
, save_csattr
; /* saved with cursor position */
73 static int rvideo
; /* global reverse video flag */
74 static int cursor_on
; /* cursor enabled flag */
75 static int reset_132
; /* Flag ESC c resets to 80 cols */
76 static int use_bce
; /* Use Background coloured erase */
77 static int blinker
; /* When blinking is the cursor on ? */
78 static int tblinker
; /* When the blinking text is on */
79 static int blink_is_real
; /* Actually blink blinking text */
81 static unsigned long cset_attr
[2];
84 * Saved settings on the alternate screen.
86 static int alt_x
, alt_y
, alt_om
, alt_wrap
, alt_wnext
, alt_ins
, alt_cset
;
87 static int alt_t
, alt_b
;
90 #define ARGS_MAX 32 /* max # of esc sequence arguments */
91 #define ARG_DEFAULT 0 /* if an arg isn't specified */
92 #define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
93 static int esc_args
[ARGS_MAX
];
96 #define ANSI(x,y) ((x)+((y)<<8))
97 #define ANSI_QUE(x) ANSI(x,TRUE)
99 #define OSC_STR_MAX 2048
100 static int osc_strlen
;
101 static char osc_string
[OSC_STR_MAX
+1];
104 static char id_string
[1024] = "\033[?6c";
106 static unsigned char *tabs
;
120 OSC_STRING
, OSC_MAYBE_ST
,
128 NO_SELECTION
, ABOUT_TO
, DRAGGING
, SELECTED
131 SM_CHAR
, SM_WORD
, SM_LINE
133 static unsigned long *selstart
, *selend
, *selanchor
;
135 static short wordness
[256] = {
136 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 01 */
137 0,1,2,1,1,1,1,1,1,1,1,1,1,2,2,2, 2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1, /* 23 */
138 1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,2, /* 45 */
139 1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1, /* 67 */
140 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 89 */
141 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* AB */
142 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2, /* CD */
143 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2, /* EF */
146 static unsigned char sel_nl
[] = SEL_NL
;
147 static char * paste_buffer
= 0;
148 static int paste_len
, paste_pos
, paste_hold
;
151 * Internal prototypes.
153 static void do_paint (Context
, int);
154 static void erase_lots (int, int, int);
155 static void swap_screen (int);
156 static void update_sbar (void);
157 static void deselect (void);
160 * Set up power-on settings for the terminal.
162 static void power_on(void) {
163 curs_x
= curs_y
= alt_x
= alt_y
= save_x
= save_y
= 0;
166 alt_b
= marg_b
= rows
- 1;
171 for (i
= 0; i
< cols
; i
++)
172 tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
174 alt_om
= dec_om
= cfg
.dec_om
;
175 alt_wnext
= wrapnext
= alt_ins
= insert
= FALSE
;
176 alt_wrap
= wrap
= cfg
.wrap_mode
;
178 cset_attr
[0] = cset_attr
[1] = ATTR_ASCII
;
181 save_attr
= curr_attr
= ATTR_DEFAULT
;
182 app_cursor_keys
= cfg
.app_cursor
;
183 app_keypad_keys
= cfg
.app_keypad
;
185 blink_is_real
= cfg
.blinktext
;
186 erase_char
= ERASE_CHAR
;
190 for (i
= 0; i
< 256; i
++)
191 wordness
[i
] = cfg
.wordness
[i
];
195 erase_lots (FALSE
, TRUE
, TRUE
);
197 erase_lots (FALSE
, TRUE
, TRUE
);
202 * Force a screen update.
204 void term_update(void) {
208 if ( (seen_key_event
&& (cfg
.scroll_on_key
)) ||
209 (seen_disp_event
&& (!cfg
.scroll_on_key
)) ) {
211 seen_disp_event
= seen_key_event
= 0;
213 do_paint (ctx
, TRUE
);
219 * Same as power_on(), but an external function.
221 void term_pwron(void) {
230 * Clear the scrollback.
232 void term_clrsb(void) {
233 disptop
= sbtop
= scrtop
;
238 * Initialise the terminal.
240 void term_init(void) {
241 text
= sbtop
= sbbot
= scrtop
= disptop
= cpos
= NULL
;
242 disptext
= wanttext
= NULL
;
251 * Set up the terminal for a given size.
253 void term_size(int newrows
, int newcols
, int newsavelines
) {
254 unsigned long *newtext
, *newdisp
, *newwant
, *newalt
;
255 int i
, j
, crows
, ccols
;
257 int save_alt_which
= alt_which
;
259 if (newrows
== rows
&& newcols
== cols
&& newsavelines
== savelines
)
260 return; /* nothing to do */
266 alt_b
= marg_b
= newrows
- 1;
268 newtext
= smalloc ((newrows
+newsavelines
)*(newcols
+1)*TSIZE
);
269 sbbot
= newtext
+ newsavelines
*(newcols
+1);
270 for (i
=0; i
<(newrows
+newsavelines
)*(newcols
+1); i
++)
271 newtext
[i
] = erase_char
;
273 crows
= rows
+ (scrtop
- sbtop
) / (cols
+1);
274 if (crows
> newrows
+newsavelines
)
275 crows
= newrows
+newsavelines
;
279 disptop
= newtext
+ (crows
-newrows
)*(newcols
+1);
280 ccols
= (cols
< newcols ? cols
: newcols
);
281 for (i
=0; i
<crows
; i
++) {
282 int oldidx
= (rows
- crows
+ i
) * (cols
+1);
283 int newidx
= (newrows
- crows
+ i
) * (newcols
+1);
285 for (j
=0; j
<ccols
; j
++)
286 disptop
[newidx
+j
] = scrtop
[oldidx
+j
];
287 disptop
[newidx
+newcols
] =
288 (cols
== newcols ? scrtop
[oldidx
+cols
]
289 : (scrtop
[oldidx
+cols
]&LATTR_MODE
));
293 sbtop
= disptop
= newtext
;
299 newdisp
= smalloc (newrows
*(newcols
+1)*TSIZE
);
300 for (i
=0; i
<newrows
*(newcols
+1); i
++)
301 newdisp
[i
] = ATTR_INVALID
;
305 newwant
= smalloc (newrows
*(newcols
+1)*TSIZE
);
306 for (i
=0; i
<newrows
*(newcols
+1); i
++)
307 newwant
[i
] = ATTR_INVALID
;
311 newalt
= smalloc (newrows
*(newcols
+1)*TSIZE
);
312 for (i
=0; i
<newrows
*(newcols
+1); i
++)
313 newalt
[i
] = erase_char
;
318 selspace
= smalloc ( (newrows
+newsavelines
) * (newcols
+sizeof(sel_nl
)) );
320 tabs
= srealloc (tabs
, newcols
*sizeof(*tabs
));
323 for (i
= (cols
> 0 ? cols
: 0); i
< newcols
; i
++)
324 tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
328 curs_y
+= newrows
- rows
;
331 if (curs_y
>= newrows
)
333 if (curs_x
>= newcols
)
336 wrapnext
= alt_wnext
= FALSE
;
340 savelines
= newsavelines
;
343 swap_screen(save_alt_which
);
352 static void swap_screen (int which
) {
356 if (which
== alt_which
)
361 for (t
=0; t
<rows
*(cols
+1); t
++) {
362 tt
= scrtop
[t
]; scrtop
[t
] = alttext
[t
]; alttext
[t
] = tt
;
365 t
= curs_x
; curs_x
= alt_x
; alt_x
= t
;
366 t
= curs_y
; curs_y
= alt_y
; alt_y
= t
;
367 t
= marg_t
; marg_t
= alt_t
; alt_t
= t
;
368 t
= marg_b
; marg_b
= alt_b
; alt_b
= t
;
369 t
= dec_om
; dec_om
= alt_om
; alt_om
= t
;
370 t
= wrap
; wrap
= alt_wrap
; alt_wrap
= t
;
371 t
= wrapnext
; wrapnext
= alt_wnext
; alt_wnext
= t
;
372 t
= insert
; insert
= alt_ins
; alt_ins
= t
;
373 t
= cset
; cset
= alt_cset
; alt_cset
= t
;
379 * Update the scroll bar.
381 static void update_sbar(void) {
384 min
= (sbtop
- text
) / (cols
+1);
385 set_sbar ((scrtop
- text
) / (cols
+1) + rows
- min
,
386 (disptop
- text
) / (cols
+1) - min
,
391 * Check whether the region bounded by the two pointers intersects
392 * the scroll region, and de-select the on-screen selection if so.
394 static void check_selection (unsigned long *from
, unsigned long *to
) {
395 if (from
< selend
&& selstart
< to
)
400 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
401 * for backward.) `sb' is TRUE if the scrolling is permitted to
402 * affect the scrollback buffer.
404 static void scroll (int topline
, int botline
, int lines
, int sb
) {
405 unsigned long *scroll_top
;
406 unsigned long *newscr
;
407 int scroll_size
, size
, i
;
408 int scrtop_is_disptop
= (scrtop
==disptop
);
409 static int recursive
= 0;
411 /* Only scroll more than the window if we're doing a 10% scroll */
412 if (!recursive
&& lines
> botline
- topline
+ 1)
413 lines
= botline
- topline
+ 1;
415 scroll_top
= scrtop
+ topline
*(cols
+1);
416 size
= (lines
< 0 ?
-lines
: lines
) * (cols
+1);
417 scroll_size
= (botline
- topline
+ 1) * (cols
+1) - size
;
419 if (lines
> 0 && topline
== 0 && alt_which
== 0 && sb
) {
421 * Since we're going to scroll the top line and we're on the
422 * scrolling screen let's also effect the scrollback buffer.
424 * This is normally done by moving the position the screen
425 * painter reads from to reduce the amount of memory copying
428 if (scroll_size
>= 0 && !recursive
) {
429 newscr
= scrtop
+ lines
* (cols
+1);
431 if (newscr
> sbbot
&& botline
== rows
-1) {
432 /* We've hit the bottom of memory, so we have to do a
433 * physical scroll. But instead of just 1 line do it
434 * by 10% of the available memory.
436 * If the scroll region isn't the whole screen then we can't
437 * do this as it stands. We would need to recover the bottom
438 * of the screen from the scroll buffer after being sure that
439 * it doesn't get deleted.
442 i
= (rows
+savelines
)/10;
444 /* Make it simple and ensure safe recursion */
445 if ( i
<savelines
-1) {
447 scroll(topline
, botline
, i
, sb
);
450 newscr
= scrtop
- i
* (cols
+1);
451 if (scrtop_is_disptop
) disptop
= newscr
;
455 newscr
= scrtop
+ lines
* (cols
+1);
458 if (newscr
<= sbbot
) {
459 if (scrtop_is_disptop
) disptop
= newscr
;
462 if (botline
== rows
-1 )
463 for (i
= 0; i
< size
; i
++)
464 scrtop
[i
+scroll_size
] = erase_char
;
469 if (botline
!= rows
-1) {
470 /* This fastscroll only works for full window scrolls.
471 * If the caller wanted a partial one we have to reverse
472 * scroll the bottom of the screen.
474 scroll(botline
-lines
+1, rows
-1, -lines
, 0);
479 /* If we can't scroll by memory remapping do it physically.
480 * But rather than expensivly doing the scroll buffer just
481 * scroll the screen. All it means is that sometimes we choose
482 * to not add lines from a scroll region to the scroll buffer.
485 if (savelines
<= 400) {
486 sbtop
-= lines
* (cols
+1);
489 scroll_size
+= scroll_top
- sbtop
;
495 /* Ho hum, expensive scroll required. */
497 sbtop
-= lines
* (cols
+1);
500 scroll_size
+= scroll_top
- sbtop
;
507 if (scroll_size
< 0) {
514 memmove (scroll_top
, scroll_top
+ size
, scroll_size
*TSIZE
);
515 for (i
= 0; i
< size
; i
++)
516 scroll_top
[i
+scroll_size
] = erase_char
;
517 if (selstart
> scroll_top
&&
518 selstart
< scroll_top
+ size
+ scroll_size
) {
520 if (selstart
< scroll_top
)
521 selstart
= scroll_top
;
523 if (selend
> scroll_top
&&
524 selend
< scroll_top
+ size
+ scroll_size
) {
526 if (selend
< scroll_top
)
529 if (scrtop_is_disptop
)
532 if (disptop
> scroll_top
&&
533 disptop
< scroll_top
+ size
+ scroll_size
) {
535 if (disptop
< scroll_top
)
536 disptop
= scroll_top
;
540 memmove (scroll_top
+ size
, scroll_top
, scroll_size
*TSIZE
);
541 for (i
= 0; i
< size
; i
++)
542 scroll_top
[i
] = erase_char
;
543 if (selstart
> scroll_top
&&
544 selstart
< scroll_top
+ size
+ scroll_size
) {
546 if (selstart
> scroll_top
+ size
+ scroll_size
)
547 selstart
= scroll_top
+ size
+ scroll_size
;
549 if (selend
> scroll_top
&&
550 selend
< scroll_top
+ size
+ scroll_size
) {
552 if (selend
> scroll_top
+ size
+ scroll_size
)
553 selend
= scroll_top
+ size
+ scroll_size
;
555 if (scrtop_is_disptop
)
557 else if (disptop
> scroll_top
&&
558 disptop
< scroll_top
+ size
+ scroll_size
) {
560 if (disptop
> scroll_top
+ size
+ scroll_size
)
561 disptop
= scroll_top
+ size
+ scroll_size
;
567 * Move the cursor to a given position, clipping at boundaries. We
568 * may or may not want to clip at the scroll margin: marg_clip is 0
569 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
570 * even _being_ outside the margins.
572 static void move (int x
, int y
, int marg_clip
) {
578 if ((curs_y
>= marg_t
|| marg_clip
== 2) && y
< marg_t
)
580 if ((curs_y
<= marg_b
|| marg_clip
== 2) && y
> marg_b
)
594 * Save or restore the cursor and SGR mode.
596 static void save_cursor(int save
) {
600 save_attr
= curr_attr
;
602 save_csattr
= cset_attr
[cset
];
606 /* Make sure the window hasn't shrunk since the save */
607 if (curs_x
>= cols
) curs_x
= cols
-1;
608 if (curs_y
>= rows
) curs_y
= rows
-1;
610 curr_attr
= save_attr
;
612 cset_attr
[cset
] = save_csattr
;
614 if (use_bce
) erase_char
= (' ' |(curr_attr
&(ATTR_FGMASK
|ATTR_BGMASK
)));
619 * Erase a large portion of the screen: the whole screen, or the
620 * whole line, or parts thereof.
622 static void erase_lots (int line_only
, int from_begin
, int to_end
) {
623 unsigned long *startpos
, *endpos
;
626 startpos
= cpos
- curs_x
;
627 endpos
= startpos
+ cols
;
628 /* I've removed the +1 so that the Wide screen stuff is not
629 * removed when it shouldn't be.
633 endpos
= startpos
+ rows
* (cols
+1);
639 check_selection (startpos
, endpos
);
641 /* Clear screen also forces a full window redraw, just in case. */
642 if (startpos
== scrtop
&& endpos
== scrtop
+ rows
* (cols
+1))
645 while (startpos
< endpos
)
646 *startpos
++ = erase_char
;
650 * Insert or delete characters within the current line. n is +ve if
651 * insertion is desired, and -ve for deletion.
653 static void insch (int n
) {
654 int dir
= (n
< 0 ?
-1 : +1);
657 n
= (n
< 0 ?
-n
: n
);
658 if (n
> cols
- curs_x
)
660 m
= cols
- curs_x
- n
;
661 check_selection (cpos
, cpos
+n
);
663 memmove (cpos
, cpos
+n
, m
*TSIZE
);
665 cpos
[m
++] = erase_char
;
667 memmove (cpos
+n
, cpos
, m
*TSIZE
);
669 cpos
[n
] = erase_char
;
674 * Toggle terminal mode `mode' to state `state'. (`query' indicates
675 * whether the mode is a DEC private one or a normal one.)
677 static void toggle_mode (int mode
, int query
, int state
) {
678 if (query
) switch (mode
) {
679 case 1: /* application cursor keys */
680 app_cursor_keys
= state
;
682 case 2: /* VT52 mode */
685 case 3: /* 80/132 columns */
687 request_resize (state ?
132 : 80, rows
, 1);
690 case 5: /* reverse video */
692 seen_disp_event
= TRUE
;
693 if (state
) term_update();
695 case 6: /* DEC origin mode */
698 case 7: /* auto wrap */
701 case 8: /* auto key repeat */
704 case 25: /* enable/disable cursor */
705 compatibility(VT220
);
707 seen_disp_event
= TRUE
;
709 case 47: /* alternate screen */
710 compatibility(OTHER
);
715 } else switch (mode
) {
716 case 4: /* set insert mode */
717 compatibility(VT102
);
720 case 12: /* set echo mode */
722 * This may be very good in smcup and rmcup (or smkx & rmkx) if you
723 * have a long RTT and the telnet client/daemon doesn't understand
726 * DONT send TS_RECHO/TS_LECHO; the telnet daemon tries to fix the
727 * tty and _really_ confuses some programs.
729 compatibility(VT220
);
730 ldisc
= (state?
&ldisc_simple
: &ldisc_term
);
732 case 20: /* Return sends ... */
733 cr_lf_return
= state
;
739 * Process an OSC sequence: set window title or icon name.
741 static void do_osc(void) {
744 wordness
[(unsigned char)osc_string
[osc_strlen
]] = esc_args
[0];
746 osc_string
[osc_strlen
] = '\0';
747 switch (esc_args
[0]) {
750 set_icon (osc_string
);
751 if (esc_args
[0] == 1)
753 /* fall through: parameter 0 means set both */
756 set_title (osc_string
);
763 * Remove everything currently in `inbuf' and stick it up on the
764 * in-memory display. There's a big state machine in here to
765 * process escape sequences...
767 void term_out(void) {
770 static int beep_overload
= 0;
773 for(inbuf_reap
= 0; inbuf_reap
< inbuf_head
; inbuf_reap
++)
775 c
= inbuf
[inbuf_reap
];
778 * Optionally log the session traffic to a file. Useful for
779 * debugging and possibly also useful for actual logging.
782 static FILE *fp
= NULL
;
783 if (!fp
) fp
= fopen(logfile
, "wb");
784 if (fp
) fputc (c
, fp
);
786 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
787 * be able to display 8-bit characters, but I'll let that go 'cause
790 if( ( (c
&0x60) == 0 || c
== '\177') &&
791 termstate
< DO_CTRLS
&&
792 ( (c
&0x80) == 0 || has_compat(VT220
))) {
794 case '\005': /* terminal type query */
795 /* Strictly speaking this is VT100 but a VT100 defaults to
796 * no response. Other terminals respond at their option.
798 * Don't put a CR in the default string as this tends to
799 * upset some weird software.
801 * An xterm returns "xterm" (5 characters)
803 compatibility(OTHER
);
804 ldisc
->send ("PuTTY", 5);
808 if(beep_count
>6) beep_overload
=1;
812 if (curs_x
== 0 && curs_y
== 0)
814 else if (curs_x
== 0 && curs_y
> 0)
815 curs_x
= cols
-1, curs_y
--;
821 seen_disp_event
= TRUE
;
824 compatibility(VT100
);
828 compatibility(VT100
);
833 termstate
= VT52_ESC
;
835 compatibility(ANSIMIN
);
836 termstate
= SEEN_ESC
;
840 compatibility(VT220
);
841 termstate
= SEEN_CSI
;
843 esc_args
[0] = ARG_DEFAULT
;
847 compatibility(VT220
);
848 termstate
= SEEN_OSC
;
855 seen_disp_event
= TRUE
;
860 compatibility(VT100
);
862 if (curs_y
== marg_b
)
863 scroll (marg_t
, marg_b
, 1, TRUE
);
864 else if (curs_y
< rows
-1)
875 unsigned long *old_cpos
= cpos
;
876 unsigned long *p
= scrtop
+ curs_y
* (cols
+1) + cols
;
880 } while (curs_x
< cols
-1 && !tabs
[curs_x
]);
882 if ((*p
& LATTR_MODE
) != LATTR_NORM
)
884 if (curs_x
>= cols
/2)
894 check_selection (old_cpos
, cpos
);
896 seen_disp_event
= TRUE
;
900 else switch (termstate
) {
902 /* Only graphic characters get this far, ctrls are stripped above */
904 cpos
[1] |= ATTR_WRAPPED
;
905 if (curs_y
== marg_b
)
906 scroll (marg_t
, marg_b
, 1, TRUE
);
907 else if (curs_y
< rows
-1)
915 if (selstate
!= NO_SELECTION
)
916 check_selection (cpos
, cpos
+1);
917 switch (cset_attr
[cset
]) {
918 /* Linedraw characters are different from 'ESC ( B' only
919 * for a small range, for ones outside that range make sure
920 * we use the same font as well as the same encoding.
923 if (c
<0x60 || c
>0x7F)
924 *cpos
++ = xlat_tty2scr((unsigned char)c
) | curr_attr
|
927 *cpos
++ = ((unsigned char)c
) | curr_attr
| ATTR_LINEDRW
;
930 *cpos
++ = xlat_tty2scr((unsigned char)c
) | curr_attr
|
931 (c
<= 0x7F ? cset_attr
[cset
] : ATTR_ASCII
);
935 if (curs_x
== cols
) {
944 termstate
= TOPLEVEL
;
948 * This state is virtually identical to SEEN_ESC, with the
949 * exception that we have an OSC sequence in the pipeline,
950 * and _if_ we see a backslash, we process it.
954 termstate
= TOPLEVEL
;
957 /* else fall through */
959 termstate
= TOPLEVEL
;
961 case ' ': /* some weird sequence? */
962 compatibility(VT220
);
963 termstate
= IGNORE_NEXT
;
965 case '[': /* enter CSI mode */
966 termstate
= SEEN_CSI
;
968 esc_args
[0] = ARG_DEFAULT
;
971 case ']': /* xterm escape sequences */
972 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
973 compatibility(OTHER
);
974 termstate
= SEEN_OSC
;
977 case '(': /* should set GL */
978 compatibility(VT100
);
981 case ')': /* should set GR */
982 compatibility(VT100
);
985 case '7': /* save cursor */
986 compatibility(VT100
);
989 case '8': /* restore cursor */
990 compatibility(VT100
);
992 seen_disp_event
= TRUE
;
995 compatibility(VT100
);
996 app_keypad_keys
= TRUE
;
999 compatibility(VT100
);
1000 app_keypad_keys
= FALSE
;
1002 case 'D': /* exactly equivalent to LF */
1003 compatibility(VT100
);
1004 if (curs_y
== marg_b
)
1005 scroll (marg_t
, marg_b
, 1, TRUE
);
1006 else if (curs_y
< rows
-1)
1010 seen_disp_event
= TRUE
;
1012 case 'E': /* exactly equivalent to CR-LF */
1013 compatibility(VT100
);
1015 if (curs_y
== marg_b
)
1016 scroll (marg_t
, marg_b
, 1, TRUE
);
1017 else if (curs_y
< rows
-1)
1021 seen_disp_event
= TRUE
;
1023 case 'M': /* reverse index - backwards LF */
1024 compatibility(VT100
);
1025 if (curs_y
== marg_t
)
1026 scroll (marg_t
, marg_b
, -1, TRUE
);
1027 else if (curs_y
> 0)
1031 seen_disp_event
= TRUE
;
1033 case 'Z': /* terminal type query */
1034 compatibility(VT100
);
1035 ldisc
->send (id_string
, strlen(id_string
));
1037 case 'c': /* restore power-on settings */
1038 compatibility(VT100
);
1041 request_resize (80, rows
, 1);
1046 seen_disp_event
= TRUE
;
1048 case '#': /* ESC # 8 fills screen with Es :-) */
1049 compatibility(VT100
);
1050 termstate
= SEEN_ESCHASH
;
1052 case 'H': /* set a tab */
1053 compatibility(VT100
);
1054 tabs
[curs_x
] = TRUE
;
1059 termstate
= TOPLEVEL
; /* default */
1062 if (esc_nargs
<= ARGS_MAX
) {
1063 if (esc_args
[esc_nargs
-1] == ARG_DEFAULT
)
1064 esc_args
[esc_nargs
-1] = 0;
1065 esc_args
[esc_nargs
-1] =
1066 10 * esc_args
[esc_nargs
-1] + c
- '0';
1068 termstate
= SEEN_CSI
;
1072 if (++esc_nargs
<= ARGS_MAX
)
1073 esc_args
[esc_nargs
-1] = ARG_DEFAULT
;
1074 termstate
= SEEN_CSI
;
1078 if( esc_query
) esc_query
= -1;
1079 else if( c
== '?' ) esc_query
= TRUE
;
1081 termstate
= SEEN_CSI
;
1083 else switch (ANSI(c
,esc_query
)) {
1084 case 'A': /* move up N lines */
1085 move (curs_x
, curs_y
- def(esc_args
[0], 1), 1);
1086 seen_disp_event
= TRUE
;
1088 case 'e': /* move down N lines */
1089 compatibility(ANSI
);
1091 move (curs_x
, curs_y
+ def(esc_args
[0], 1), 1);
1092 seen_disp_event
= TRUE
;
1094 case 'a': /* move right N cols */
1095 compatibility(ANSI
);
1097 move (curs_x
+ def(esc_args
[0], 1), curs_y
, 1);
1098 seen_disp_event
= TRUE
;
1100 case 'D': /* move left N cols */
1101 move (curs_x
- def(esc_args
[0], 1), curs_y
, 1);
1102 seen_disp_event
= TRUE
;
1104 case 'E': /* move down N lines and CR */
1105 compatibility(ANSI
);
1106 move (0, curs_y
+ def(esc_args
[0], 1), 1);
1107 seen_disp_event
= TRUE
;
1109 case 'F': /* move up N lines and CR */
1110 compatibility(ANSI
);
1111 move (0, curs_y
- def(esc_args
[0], 1), 1);
1112 seen_disp_event
= TRUE
;
1114 case 'G': case '`': /* set horizontal posn */
1115 compatibility(ANSI
);
1116 move (def(esc_args
[0], 1) - 1, curs_y
, 0);
1117 seen_disp_event
= TRUE
;
1119 case 'd': /* set vertical posn */
1120 compatibility(ANSI
);
1121 move (curs_x
, (dec_om ? marg_t
: 0) + def(esc_args
[0], 1) - 1,
1123 seen_disp_event
= TRUE
;
1125 case 'H': case 'f': /* set horz and vert posns at once */
1127 esc_args
[1] = ARG_DEFAULT
;
1128 move (def(esc_args
[1], 1) - 1,
1129 (dec_om ? marg_t
: 0) + def(esc_args
[0], 1) - 1,
1131 seen_disp_event
= TRUE
;
1133 case 'J': /* erase screen or parts of it */
1135 unsigned int i
= def(esc_args
[0], 0) + 1;
1138 erase_lots(FALSE
, !!(i
& 2), !!(i
& 1));
1141 seen_disp_event
= TRUE
;
1143 case 'K': /* erase line or parts of it */
1145 unsigned int i
= def(esc_args
[0], 0) + 1;
1148 erase_lots(TRUE
, !!(i
& 2), !!(i
& 1));
1150 seen_disp_event
= TRUE
;
1152 case 'L': /* insert lines */
1153 compatibility(VT102
);
1154 if (curs_y
<= marg_b
)
1155 scroll (curs_y
, marg_b
, -def(esc_args
[0], 1), FALSE
);
1156 seen_disp_event
= TRUE
;
1158 case 'M': /* delete lines */
1159 compatibility(VT102
);
1160 if (curs_y
<= marg_b
)
1161 scroll (curs_y
, marg_b
, def(esc_args
[0], 1), TRUE
);
1162 seen_disp_event
= TRUE
;
1164 case '@': /* insert chars */
1165 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
1166 compatibility(VT102
);
1167 insch (def(esc_args
[0], 1));
1168 seen_disp_event
= TRUE
;
1170 case 'P': /* delete chars */
1171 compatibility(VT102
);
1172 insch (-def(esc_args
[0], 1));
1173 seen_disp_event
= TRUE
;
1175 case 'c': /* terminal type query */
1176 compatibility(VT100
);
1177 /* This is the response for a VT102 */
1178 ldisc
->send (id_string
, strlen(id_string
));
1180 case 'n': /* cursor position query */
1181 if (esc_args
[0] == 6) {
1183 sprintf (buf
, "\033[%d;%dR", curs_y
+ 1, curs_x
+ 1);
1184 ldisc
->send (buf
, strlen(buf
));
1186 else if (esc_args
[0] == 5) {
1187 ldisc
->send ("\033[0n", 4);
1190 case 'h': /* toggle modes to high */
1192 compatibility(VT100
);
1195 for (i
=0; i
<esc_nargs
; i
++)
1196 toggle_mode (esc_args
[i
], esc_query
, TRUE
);
1199 case 'l': /* toggle modes to low */
1201 compatibility(VT100
);
1204 for (i
=0; i
<esc_nargs
; i
++)
1205 toggle_mode (esc_args
[i
], esc_query
, FALSE
);
1208 case 'g': /* clear tabs */
1209 compatibility(VT100
);
1210 if (esc_nargs
== 1) {
1211 if (esc_args
[0] == 0) {
1212 tabs
[curs_x
] = FALSE
;
1213 } else if (esc_args
[0] == 3) {
1215 for (i
= 0; i
< cols
; i
++)
1220 case 'r': /* set scroll margins */
1221 compatibility(VT100
);
1222 if (esc_nargs
<= 2) {
1224 top
= def(esc_args
[0], 1) - 1;
1225 bot
= (esc_nargs
<= 1 || esc_args
[1] == 0 ? rows
:
1226 def(esc_args
[1], rows
)) - 1;
1229 /* VTTEST Bug 9 - if region is less than 2 lines
1230 * don't change region.
1237 * I used to think the cursor should be
1238 * placed at the top of the newly marginned
1239 * area. Apparently not: VMS TPU falls over
1242 * Well actually it should for Origin mode - RDB
1244 curs_y
= (dec_om ? marg_t
: 0);
1246 seen_disp_event
= TRUE
;
1250 case 'm': /* set graphics rendition */
1253 * A VT100 without the AVO only had one attribute, either
1254 * underline or reverse video depending on the cursor type,
1255 * this was selected by CSI 7m.
1258 * This is DIM on the VT100-AVO and VT102
1260 * This is BLINK on the VT100-AVO and VT102+
1262 * This is INVIS on the VT100-AVO and VT102
1264 * This like 22 disables BOLD, DIM and INVIS
1266 * The ANSI colours appear on any terminal that has colour
1267 * (obviously) but the interaction between sgr0 and the
1268 * colours varies but is usually related to the background
1269 * colour erase item.
1270 * The interaction between colour attributes and the mono
1271 * ones is also very implementation dependent.
1273 * The 39 and 49 attributes are likely to be unimplemented.
1276 for (i
=0; i
<esc_nargs
; i
++) {
1277 switch (def(esc_args
[i
], 0)) {
1278 case 0: /* restore defaults */
1279 curr_attr
= ATTR_DEFAULT
; break;
1280 case 1: /* enable bold */
1281 compatibility(VT100AVO
);
1282 curr_attr
|= ATTR_BOLD
; break;
1283 case 21: /* (enable double underline) */
1284 compatibility(OTHER
);
1285 case 4: /* enable underline */
1286 compatibility(VT100AVO
);
1287 curr_attr
|= ATTR_UNDER
; break;
1288 case 5: /* enable blink */
1289 compatibility(VT100AVO
);
1290 curr_attr
|= ATTR_BLINK
; break;
1291 case 7: /* enable reverse video */
1292 curr_attr
|= ATTR_REVERSE
; break;
1293 case 22: /* disable bold */
1294 compatibility(VT220
);
1295 curr_attr
&= ~ATTR_BOLD
; break;
1296 case 24: /* disable underline */
1297 compatibility(VT220
);
1298 curr_attr
&= ~ATTR_UNDER
; break;
1299 case 25: /* disable blink */
1300 compatibility(VT220
);
1301 curr_attr
&= ~ATTR_BLINK
; break;
1302 case 27: /* disable reverse video */
1303 compatibility(VT220
);
1304 curr_attr
&= ~ATTR_REVERSE
; break;
1305 case 30: case 31: case 32: case 33:
1306 case 34: case 35: case 36: case 37:
1308 curr_attr
&= ~ATTR_FGMASK
;
1309 curr_attr
|= (esc_args
[i
] - 30) << ATTR_FGSHIFT
;
1311 case 39: /* default-foreground */
1312 curr_attr
&= ~ATTR_FGMASK
;
1313 curr_attr
|= ATTR_DEFFG
;
1315 case 40: case 41: case 42: case 43:
1316 case 44: case 45: case 46: case 47:
1318 curr_attr
&= ~ATTR_BGMASK
;
1319 curr_attr
|= (esc_args
[i
] - 40) << ATTR_BGSHIFT
;
1321 case 49: /* default-background */
1322 curr_attr
&= ~ATTR_BGMASK
;
1323 curr_attr
|= ATTR_DEFBG
;
1330 (curr_attr
&(ATTR_FGMASK
|ATTR_BGMASK
|ATTR_BLINK
))
1334 case 's': /* save cursor */
1337 case 'u': /* restore cursor */
1338 save_cursor (FALSE
);
1339 seen_disp_event
= TRUE
;
1341 case 't': /* set page size - ie window height */
1343 * VT340/VT420 sequence DECSLPP, DEC only allows values
1344 * 24/25/36/48/72/144 other emulators (eg dtterm) use
1345 * illegal values (eg first arg 1..9) for window changing
1348 compatibility(VT340TEXT
);
1349 if (esc_nargs
<=1 && (esc_args
[0]<1 || esc_args
[0]>=24)) {
1350 request_resize (cols
, def(esc_args
[0], 24), 0);
1354 case ANSI('|', '*'):
1355 /* VT420 sequence DECSNLS
1356 * Set number of lines on screen
1357 * VT420 uses VGA like hardware and can support any size in
1358 * reasonable range (24..49 AIUI) with no default specified.
1360 compatibility(VT420
);
1361 if (esc_nargs
==1 && esc_args
[0]>0) {
1362 request_resize (cols
, def(esc_args
[0], cfg
.height
), 0);
1366 case ANSI('|', '$'):
1367 /* VT340/VT420 sequence DECSCPP
1368 * Set number of columns per page
1369 * Docs imply range is only 80 or 132, but I'll allow any.
1371 compatibility(VT340TEXT
);
1373 request_resize (def(esc_args
[0], cfg
.width
), rows
, 0);
1377 case 'X': /* write N spaces w/o moving cursor */
1378 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
1379 compatibility(ANSIMIN
);
1381 int n
= def(esc_args
[0], 1);
1382 unsigned long *p
= cpos
;
1383 if (n
> cols
- curs_x
)
1385 check_selection (cpos
, cpos
+n
);
1388 seen_disp_event
= TRUE
;
1391 case 'x': /* report terminal characteristics */
1392 compatibility(VT100
);
1395 int i
= def(esc_args
[0], 0);
1396 if (i
== 0 || i
== 1) {
1397 strcpy (buf
, "\033[2;1;1;112;112;1;0x");
1399 ldisc
->send (buf
, 20);
1404 compatibility(OTHER
);
1405 use_bce
= (esc_args
[0]<=0);
1406 erase_char
= ERASE_CHAR
;
1408 erase_char
= (' '|(curr_attr
&(ATTR_FGMASK
|ATTR_BGMASK
)));
1411 compatibility(OTHER
);
1412 blink_is_real
= (esc_args
[0]>=1);
1415 /* Allow the host to make this emulator a 'perfect' VT102.
1416 * This first appeared in the VT220, but we do need to get
1417 * back to PuTTY mode so I won't check it.
1419 * The arg == 60 is a PuTTY extension.
1420 * The 2nd arg, 8bit vs 7bit is not obeyed.
1422 * Setting VT102 mode should also change the Fkeys to
1423 * generate PF* codes as a real VT102 has no Fkeys.
1424 * The VT220 does this, F11..F13 become ESC,BS,LF other Fkeys
1427 * Note ESC c will NOT change this!
1430 if (esc_args
[0] == 61) compatibility_level
= TM_VT102
;
1431 else if (esc_args
[0] == 60) compatibility_level
= TM_ANSIMIN
;
1432 else compatibility_level
= TM_PUTTY
;
1438 /* VT100 only here, checked above */
1441 cset_attr
[termstate
== SET_GL ?
0 : 1] = ATTR_GBCHR
;
1444 cset_attr
[termstate
== SET_GL ?
0 : 1] = ATTR_LINEDRW
;
1447 default: /* specifically, 'B' */
1448 cset_attr
[termstate
== SET_GL ?
0 : 1] = ATTR_ASCII
;
1451 if( !has_compat(VT220
) || c
!= '%' )
1452 termstate
= TOPLEVEL
;
1457 case 'P': /* Linux palette sequence */
1458 termstate
= SEEN_OSC_P
;
1461 case 'R': /* Linux palette reset */
1464 termstate
= TOPLEVEL
;
1466 case 'W': /* word-set */
1467 termstate
= SEEN_OSC_W
;
1470 case '0': case '1': case '2': case '3': case '4':
1471 case '5': case '6': case '7': case '8': case '9':
1472 esc_args
[0] = 10 * esc_args
[0] + c
- '0';
1476 * Grotty hack to support xterm and DECterm title
1477 * sequences concurrently.
1479 if (esc_args
[0] == 2) {
1483 /* else fall through */
1485 termstate
= OSC_STRING
;
1491 * This OSC stuff is EVIL. It takes just one character to get into
1492 * sysline mode and it's not initially obvious how to get out.
1493 * So I've added CR and LF as string aborts.
1494 * This shouldn't effect compatibility as I believe embedded
1495 * control characters are supposed to be interpreted (maybe?)
1496 * and they don't display anything useful anyway.
1500 if (c
== '\n' || c
== '\r') {
1501 termstate
= TOPLEVEL
;
1502 } else if (c
== 0234 || c
== '\007' ) {
1504 * These characters terminate the string; ST and BEL
1505 * terminate the sequence and trigger instant
1506 * processing of it, whereas ESC goes back to SEEN_ESC
1507 * mode unless it is followed by \, in which case it is
1508 * synonymous with ST in the first place.
1511 termstate
= TOPLEVEL
;
1512 } else if (c
== '\033')
1513 termstate
= OSC_MAYBE_ST
;
1514 else if (osc_strlen
< OSC_STR_MAX
)
1515 osc_string
[osc_strlen
++] = c
;
1519 int max
= (osc_strlen
== 0 ?
21 : 16);
1521 if (c
>= '0' && c
<= '9')
1523 else if (c
>= 'A' && c
<= 'A'+max
-10)
1525 else if (c
>= 'a' && c
<= 'a'+max
-10)
1528 termstate
= TOPLEVEL
;
1529 osc_string
[osc_strlen
++] = val
;
1530 if (osc_strlen
>= 7) {
1531 palette_set (osc_string
[0],
1532 osc_string
[1] * 16 + osc_string
[2],
1533 osc_string
[3] * 16 + osc_string
[4],
1534 osc_string
[5] * 16 + osc_string
[6]);
1536 termstate
= TOPLEVEL
;
1542 case '0': case '1': case '2': case '3': case '4':
1543 case '5': case '6': case '7': case '8': case '9':
1544 esc_args
[0] = 10 * esc_args
[0] + c
- '0';
1547 termstate
= OSC_STRING
;
1554 unsigned long nlattr
;
1560 n
= rows
* (cols
+1);
1562 *p
++ = ATTR_DEFAULT
| 'E';
1564 seen_disp_event
= TRUE
;
1565 check_selection (scrtop
, scrtop
+ rows
* (cols
+1));
1568 case '3': nlattr
= LATTR_TOP
; if(0) {
1569 case '4': nlattr
= LATTR_BOT
; } if(0) {
1570 case '5': nlattr
= LATTR_NORM
; } if(0) {
1571 case '6': nlattr
= LATTR_WIDE
; }
1573 p
= scrtop
+ curs_y
* (cols
+1) + cols
;
1578 termstate
= TOPLEVEL
;
1581 termstate
= TOPLEVEL
;
1582 seen_disp_event
= TRUE
;
1585 move (curs_x
, curs_y
- 1, 1);
1588 move (curs_x
, curs_y
+ 1, 1);
1591 move (curs_x
+ 1, curs_y
, 1);
1594 move (curs_x
- 1, curs_y
, 1);
1597 cset_attr
[cset
=0] = ATTR_LINEDRW
;
1600 cset_attr
[cset
=0] = ATTR_ASCII
;
1607 scroll (0, rows
-1, -1, TRUE
);
1608 else if (curs_y
> 0)
1614 erase_lots(FALSE
, FALSE
, TRUE
);
1618 erase_lots(TRUE
, FALSE
, TRUE
);
1621 /* XXX Print cursor line */
1624 /* XXX Start controller mode */
1627 /* XXX Stop controller mode */
1630 termstate
= VT52_Y1
;
1633 ldisc
->send ("\033/Z", 3);
1636 app_cursor_keys
= TRUE
;
1639 app_cursor_keys
= FALSE
;
1642 /* XXX This should switch to VT100 mode not current or default
1643 * VT mode. But this will only have effect in a VT220+
1649 /* XXX Enter auto print mode */
1652 /* XXX Exit auto print mode */
1655 /* XXX Print screen */
1660 termstate
= VT52_Y2
;
1661 move(curs_x
, c
-' ', 0);
1664 termstate
= TOPLEVEL
;
1665 move(c
-' ', curs_y
, 0);
1668 if (selstate
!= NO_SELECTION
)
1669 check_selection (cpos
, cpos
+1);
1675 if(!beep_count
) beep_overload
=0;
1677 else if(beep_count
&& beep_count
<5 && cfg
.beep
)
1682 * Compare two lines to determine whether they are sufficiently
1683 * alike to scroll-optimise one to the other. Return the degree of
1686 static int linecmp (unsigned long *a
, unsigned long *b
) {
1689 for (i
=n
=0; i
< cols
; i
++)
1690 n
+= (*a
++ == *b
++);
1695 * Given a context, update the window. Out of paranoia, we don't
1696 * allow WM_PAINT responses to do scrolling optimisations.
1698 static void do_paint (Context ctx
, int may_optimise
){
1699 int i
, j
, start
, our_curs_y
;
1700 unsigned long attr
, rv
, cursor
;
1705 if (blinker
|| !cfg
.blink_cur
)
1706 cursor
= ATTR_ACTCURS
;
1711 cursor
= ATTR_PASCURS
;
1714 rv
= (rvideo ? ATTR_REVERSE
: 0);
1715 our_curs_y
= curs_y
+ (scrtop
- disptop
) / (cols
+1);
1717 for (i
=0; i
<rows
; i
++) {
1718 int idx
= i
*(cols
+1);
1719 int lattr
= (disptop
[idx
+cols
] & LATTR_MODE
);
1720 for (j
=0; j
<=cols
; j
++,idx
++) {
1721 unsigned long *d
= disptop
+idx
;
1722 wanttext
[idx
] = lattr
| ((*d
^ rv
1723 ^ (selstart
<= d
&& d
< selend ?
1724 ATTR_REVERSE
: 0)) |
1725 (i
==our_curs_y
&& j
==curs_x ? cursor
: 0));
1727 if (blink_is_real
) {
1728 if (has_focus
&& tblinker
&& (wanttext
[idx
]&ATTR_BLINK
) )
1730 wanttext
[idx
] &= ATTR_MASK
;
1731 wanttext
[idx
] += ' ';
1733 wanttext
[idx
] &= ~ATTR_BLINK
;
1739 * We would perform scrolling optimisations in here, if they
1740 * didn't have a nasty tendency to cause the whole sodding
1741 * program to hang for a second at speed-critical moments.
1742 * We'll leave it well alone...
1745 for (i
=0; i
<rows
; i
++) {
1746 int idx
= i
*(cols
+1);
1747 int lattr
= (wanttext
[idx
+cols
] & LATTR_MODE
);
1749 for (j
=0; j
<=cols
; j
++,idx
++) {
1750 unsigned long t
= wanttext
[idx
];
1751 int needs_update
= (j
< cols
&& t
!= disptext
[idx
]);
1752 int keep_going
= (start
!= -1 && needs_update
&&
1753 (t
& ATTR_MASK
) == attr
&&
1754 j
-start
< sizeof(ch
));
1755 if (start
!= -1 && !keep_going
) {
1756 do_text (ctx
, start
, i
, ch
, j
-start
, attr
, lattr
);
1762 attr
= t
& ATTR_MASK
;
1764 ch
[j
-start
] = (char) (t
& CHAR_MASK
);
1772 * Flick the switch that says if blinking things should be shown or hidden.
1775 void term_blink(int flg
) {
1776 static long last_blink
= 0;
1777 static long last_tblink
= 0;
1778 long now
, blink_diff
;
1780 now
= GetTickCount();
1781 blink_diff
= now
-last_tblink
;
1783 /* Make sure the text blinks no more than 2Hz */
1784 if (blink_diff
<0 || blink_diff
>450)
1787 tblinker
= !tblinker
;
1796 blink_diff
= now
-last_blink
;
1798 /* Make sure the cursor blinks no more than 2Hz */
1799 if (blink_diff
>=0 && blink_diff
<450)
1807 * Invalidate the whole screen so it will be repainted in full.
1809 void term_invalidate(void) {
1812 for (i
=0; i
<rows
*(cols
+1); i
++)
1813 disptext
[i
] = ATTR_INVALID
;
1817 * Paint the window in response to a WM_PAINT message.
1819 void term_paint (Context ctx
, int l
, int t
, int r
, int b
) {
1820 int i
, j
, left
, top
, right
, bottom
;
1822 left
= l
/ font_width
;
1823 right
= (r
- 1) / font_width
;
1824 top
= t
/ font_height
;
1825 bottom
= (b
- 1) / font_height
;
1826 for (i
= top
; i
<= bottom
&& i
< rows
; i
++)
1828 if ( (disptext
[i
*(cols
+1)+cols
]&LATTR_MODE
) == LATTR_NORM
)
1829 for (j
= left
; j
<= right
&& j
< cols
; j
++)
1830 disptext
[i
*(cols
+1)+j
] = ATTR_INVALID
;
1832 for (j
= left
/2; j
<= right
/2+1 && j
< cols
; j
++)
1833 disptext
[i
*(cols
+1)+j
] = ATTR_INVALID
;
1836 /* This should happen soon enough, also for some reason it sometimes
1837 * fails to actually do anything when re-sizing ... painting the wrong
1839 do_paint (ctx, FALSE);
1844 * Attempt to scroll the scrollback. The second parameter gives the
1845 * position we want to scroll to; the first is +1 to denote that
1846 * this position is relative to the beginning of the scrollback, -1
1847 * to denote it is relative to the end, and 0 to denote that it is
1848 * relative to the current position.
1850 void term_scroll (int rel
, int where
) {
1851 int n
= where
* (cols
+1);
1853 disptop
= (rel
< 0 ? scrtop
:
1854 rel
> 0 ? sbtop
: disptop
) + n
;
1855 if (disptop
< sbtop
)
1857 if (disptop
> scrtop
)
1864 * Spread the selection outwards according to the selection mode.
1866 static unsigned long *sel_spread_half (unsigned long *p
, int dir
) {
1867 unsigned long *linestart
, *lineend
;
1871 x
= (p
- text
) % (cols
+1);
1873 lineend
= linestart
+ cols
;
1878 * In this mode, every character is a separate unit, except
1879 * for runs of spaces at the end of a non-wrapping line.
1881 if (!(linestart
[cols
] & ATTR_WRAPPED
)) {
1882 unsigned long *q
= lineend
;
1883 while (q
> linestart
&& (q
[-1] & CHAR_MASK
) == 0x20)
1888 p
= (dir
== -1 ? q
: lineend
- 1);
1893 * In this mode, the units are maximal runs of characters
1894 * whose `wordness' has the same value.
1896 wvalue
= wordness
[*p
& CHAR_MASK
];
1898 while (p
< lineend
&& wordness
[p
[1] & CHAR_MASK
] == wvalue
)
1901 while (p
> linestart
&& wordness
[p
[-1] & CHAR_MASK
] == wvalue
)
1907 * In this mode, every line is a unit.
1909 p
= (dir
== -1 ? linestart
: lineend
- 1);
1915 static void sel_spread (void) {
1916 selstart
= sel_spread_half (selstart
, -1);
1917 selend
= sel_spread_half (selend
- 1, +1) + 1;
1920 void term_mouse (Mouse_Button b
, Mouse_Action a
, int x
, int y
) {
1921 unsigned long *selpoint
;
1924 if (y
>=rows
) y
= rows
-1;
1932 if (x
>=cols
) x
= cols
-1;
1934 selpoint
= disptop
+ y
* (cols
+1);
1935 if ((selpoint
[cols
]&LATTR_MODE
) != LATTR_NORM
)
1940 if (b
== MB_SELECT
&& a
== MA_CLICK
) {
1942 selstate
= ABOUT_TO
;
1943 selanchor
= selpoint
;
1945 } else if (b
== MB_SELECT
&& (a
== MA_2CLK
|| a
== MA_3CLK
)) {
1947 selmode
= (a
== MA_2CLK ? SM_WORD
: SM_LINE
);
1948 selstate
= DRAGGING
;
1949 selstart
= selanchor
= selpoint
;
1950 selend
= selstart
+ 1;
1952 } else if ((b
== MB_SELECT
&& a
== MA_DRAG
) ||
1953 (b
== MB_EXTEND
&& a
!= MA_RELEASE
)) {
1954 if (selstate
== ABOUT_TO
&& selanchor
== selpoint
)
1956 if (b
== MB_EXTEND
&& a
!= MA_DRAG
&& selstate
== SELECTED
) {
1957 if (selpoint
-selstart
< (selend
-selstart
)/2)
1958 selanchor
= selend
- 1;
1960 selanchor
= selstart
;
1961 selstate
= DRAGGING
;
1963 if (selstate
!= ABOUT_TO
&& selstate
!= DRAGGING
)
1964 selanchor
= selpoint
;
1965 selstate
= DRAGGING
;
1966 if (selpoint
< selanchor
) {
1967 selstart
= selpoint
;
1968 selend
= selanchor
+ 1;
1970 selstart
= selanchor
;
1971 selend
= selpoint
+ 1;
1974 } else if ((b
== MB_SELECT
|| b
== MB_EXTEND
) && a
== MA_RELEASE
) {
1975 if (selstate
== DRAGGING
) {
1977 * We've completed a selection. We now transfer the
1978 * data to the clipboard.
1980 unsigned char *p
= selspace
;
1981 unsigned long *q
= selstart
;
1983 while (q
< selend
) {
1985 unsigned long *lineend
= q
- (q
-text
) % (cols
+1) + cols
;
1986 unsigned long *nlpos
= lineend
;
1988 if (!(*nlpos
& ATTR_WRAPPED
)) {
1989 while ((nlpos
[-1] & CHAR_MASK
) == 0x20 && nlpos
> q
)
1994 while (q
< nlpos
&& q
< selend
)
1995 *p
++ = (unsigned char) (*q
++ & CHAR_MASK
);
1998 for (i
=0; i
<sizeof(sel_nl
); i
++)
2001 q
= lineend
+ 1; /* start of next line */
2003 write_clip (selspace
, p
- selspace
);
2004 selstate
= SELECTED
;
2006 selstate
= NO_SELECTION
;
2007 } else if (b
== MB_PASTE
&& (a
==MA_CLICK
|| a
==MA_2CLK
|| a
==MA_3CLK
)) {
2011 get_clip((void **) &data
, &len
);
2015 if (paste_buffer
) sfree(paste_buffer
);
2016 paste_pos
= paste_hold
= paste_len
= 0;
2017 paste_buffer
= smalloc(len
);
2020 while (p
< data
+len
) {
2021 while (p
< data
+len
&&
2022 !(p
<= data
+len
-sizeof(sel_nl
) &&
2023 !memcmp(p
, sel_nl
, sizeof(sel_nl
))))
2031 c
=xlat_kbd2tty(q
[i
]);
2032 paste_buffer
[paste_len
++] = c
;
2036 if (p
<= data
+len
-sizeof(sel_nl
) &&
2037 !memcmp(p
, sel_nl
, sizeof(sel_nl
))) {
2038 paste_buffer
[paste_len
++] = '\r';
2039 p
+= sizeof(sel_nl
);
2044 /* Assume a small paste will be OK in one go. */
2045 if (paste_len
<256) {
2046 ldisc
->send (paste_buffer
, paste_len
);
2047 if (paste_buffer
) sfree(paste_buffer
);
2049 paste_pos
= paste_hold
= paste_len
= 0;
2052 get_clip(NULL
, NULL
);
2058 void term_nopaste() {
2059 if(paste_len
== 0) return;
2060 sfree(paste_buffer
);
2066 static long last_paste
= 0;
2067 long now
, paste_diff
;
2069 if(paste_len
== 0) return;
2071 /* Don't wait forever to paste */
2073 now
= GetTickCount();
2074 paste_diff
= now
-last_paste
;
2075 if (paste_diff
>=0 && paste_diff
<450)
2080 while(paste_pos
<paste_len
)
2082 char c
= paste_buffer
[paste_pos
++];
2083 ldisc
->send (&c
, 1);
2090 sfree(paste_buffer
);
2095 static void deselect (void) {
2096 selstate
= NO_SELECTION
;
2097 selstart
= selend
= scrtop
;
2100 void term_deselect (void) {