374330e2 |
1 | #include <windows.h> |
2 | |
3 | #include <stdio.h> |
4 | #include <stdlib.h> |
5 | |
6 | #include "putty.h" |
7 | |
8 | static unsigned long *text; /* buffer of text on terminal screen */ |
9 | static unsigned long *scrtop; /* top of working screen */ |
10 | static unsigned long *disptop; /* top of displayed screen */ |
11 | static unsigned long *sbtop; /* top of scrollback */ |
12 | static unsigned long *cpos; /* cursor position (convenience) */ |
13 | static unsigned long *disptext; /* buffer of text on real screen */ |
14 | static unsigned long *wanttext; /* buffer of text we want on screen */ |
15 | static unsigned long *alttext; /* buffer of text on alt. screen */ |
16 | |
17 | static unsigned char *selspace; /* buffer for building selections in */ |
18 | |
19 | #define TSIZE (sizeof(*text)) |
20 | #define fix_cpos do { cpos = scrtop + curs_y * (cols+1) + curs_x; } while(0) |
21 | |
22 | static unsigned long curr_attr, save_attr; |
23 | |
24 | static int curs_x, curs_y; /* cursor */ |
25 | static int save_x, save_y; /* saved cursor position */ |
26 | static int marg_t, marg_b; /* scroll margins */ |
27 | static int dec_om; /* DEC origin mode flag */ |
28 | static int wrap, wrapnext; /* wrap flags */ |
29 | static int insert; /* insert-mode flag */ |
30 | static int cset; /* 0 or 1: which char set */ |
31 | static int save_cset, save_csattr; /* saved with cursor position */ |
32 | static int rvideo; /* global reverse video flag */ |
33 | |
34 | static unsigned long cset_attr[2]; |
35 | |
36 | /* |
37 | * Saved settings on the alternate screen. |
38 | */ |
39 | static int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins, alt_cset; |
40 | static int alt_t, alt_b; |
41 | static int alt_which; |
42 | |
43 | #define ARGS_MAX 32 /* max # of esc sequence arguments */ |
44 | #define ARG_DEFAULT -1 /* if an arg isn't specified */ |
45 | #define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) ) |
46 | static int esc_args[ARGS_MAX]; |
47 | static int esc_nargs; |
48 | static int esc_query; |
8b811b12 |
49 | #define ANSI(x,y) ((x)+((y)<<8)) |
50 | #define ANSI_QUE(x) ANSI(x,TRUE) |
374330e2 |
51 | |
52 | #define OSC_STR_MAX 2048 |
53 | static int osc_strlen; |
54 | static char osc_string[OSC_STR_MAX+1]; |
55 | static int osc_w; |
56 | |
57 | static unsigned char *tabs; |
58 | |
59 | #define MAXNL 5 |
60 | static int nl_count; |
61 | |
62 | static int scroll_heuristic; |
63 | |
64 | static enum { |
cabfd08c |
65 | TOPLEVEL, |
66 | SEEN_ESC, |
67 | SEEN_CSI, |
68 | SEEN_OSC, |
69 | SEEN_OSC_W, |
70 | |
71 | DO_CTRLS, |
72 | |
73 | IGNORE_NEXT, |
74 | SET_GL, SET_GR, |
75 | SEEN_OSC_P, |
76 | OSC_STRING, OSC_MAYBE_ST, |
374330e2 |
77 | SEEN_ESCHASH |
78 | } termstate; |
79 | |
80 | static enum { |
81 | NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED |
82 | } selstate; |
83 | static enum { |
84 | SM_CHAR, SM_WORD, SM_LINE |
85 | } selmode; |
86 | static unsigned long *selstart, *selend, *selanchor; |
87 | |
88 | static short wordness[256] = { |
89 | 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 */ |
90 | 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 */ |
91 | 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 */ |
92 | 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 */ |
93 | 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 */ |
94 | 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 */ |
95 | 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 */ |
96 | 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 */ |
97 | }; |
98 | |
99 | static unsigned char sel_nl[] = SEL_NL; |
100 | |
101 | /* |
102 | * Internal prototypes. |
103 | */ |
104 | static void do_paint (Context, int); |
105 | static void erase_lots (int, int, int); |
106 | static void swap_screen (int); |
107 | static void update_sbar (void); |
108 | static void deselect (void); |
109 | |
110 | /* |
111 | * Set up power-on settings for the terminal. |
112 | */ |
113 | static void power_on(void) { |
114 | curs_x = curs_y = alt_x = alt_y = save_x = save_y = 0; |
115 | alt_t = marg_t = 0; |
116 | if (rows != -1) |
117 | alt_b = marg_b = rows - 1; |
118 | else |
119 | alt_b = marg_b = 0; |
120 | if (cols != -1) { |
121 | int i; |
122 | for (i = 0; i < cols; i++) |
123 | tabs[i] = (i % 8 == 0 ? TRUE : FALSE); |
124 | } |
125 | alt_om = dec_om = cfg.dec_om; |
126 | alt_wnext = wrapnext = alt_ins = insert = FALSE; |
127 | alt_wrap = wrap = cfg.wrap_mode; |
128 | alt_cset = cset = 0; |
129 | cset_attr[0] = cset_attr[1] = ATTR_ASCII; |
130 | rvideo = 0; |
131 | save_attr = curr_attr = ATTR_DEFAULT; |
132 | app_cursor_keys = cfg.app_cursor; |
133 | app_keypad_keys = cfg.app_keypad; |
134 | alt_which = 0; |
135 | { |
136 | int i; |
137 | for (i = 0; i < 256; i++) |
138 | wordness[i] = cfg.wordness[i]; |
139 | } |
140 | if (text) { |
141 | swap_screen (1); |
142 | erase_lots (FALSE, TRUE, TRUE); |
143 | swap_screen (0); |
144 | erase_lots (FALSE, TRUE, TRUE); |
145 | } |
146 | } |
147 | |
148 | /* |
149 | * Force a screen update. |
150 | */ |
151 | void term_update(void) { |
152 | Context ctx; |
153 | ctx = get_ctx(); |
154 | if (ctx) { |
0b961e0a |
155 | if ( (seen_key_event && (unscroll_event & US_KEY)) || |
cabfd08c |
156 | (seen_disp_event && (unscroll_event & US_DISP)) ) { |
157 | disptop = scrtop; |
158 | seen_disp_event = seen_key_event = 0; |
159 | } |
374330e2 |
160 | do_paint (ctx, TRUE); |
161 | free_ctx (ctx); |
162 | nl_count = 0; |
163 | scroll_heuristic = 0; |
164 | } |
165 | } |
166 | |
167 | /* |
168 | * Same as power_on(), but an external function. |
169 | */ |
170 | void term_pwron(void) { |
171 | power_on(); |
172 | fix_cpos; |
173 | disptop = scrtop; |
174 | deselect(); |
175 | term_update(); |
176 | } |
177 | |
178 | /* |
179 | * Clear the scrollback. |
180 | */ |
181 | void term_clrsb(void) { |
182 | disptop = sbtop = scrtop; |
183 | update_sbar(); |
184 | } |
185 | |
186 | /* |
187 | * Initialise the terminal. |
188 | */ |
189 | void term_init(void) { |
190 | text = sbtop = scrtop = disptop = cpos = NULL; |
191 | disptext = wanttext = NULL; |
192 | tabs = NULL; |
193 | selspace = NULL; |
194 | deselect(); |
195 | rows = cols = -1; |
196 | nl_count = 0; |
197 | power_on(); |
198 | } |
199 | |
200 | /* |
201 | * Set up the terminal for a given size. |
202 | */ |
203 | void term_size(int newrows, int newcols, int newsavelines) { |
204 | unsigned long *newtext, *newdisp, *newwant, *newalt; |
205 | int i, j, crows, ccols; |
206 | |
207 | if (newrows == rows && newcols == cols && newsavelines == savelines) |
208 | return; /* nothing to do */ |
209 | |
210 | alt_t = marg_t = 0; |
211 | alt_b = marg_b = newrows - 1; |
212 | |
213 | newtext = smalloc ((newrows+newsavelines)*(newcols+1)*TSIZE); |
214 | disptop = newtext + newsavelines*(newcols+1); |
215 | for (i=0; i<(newrows+newsavelines)*(newcols+1); i++) |
216 | newtext[i] = ERASE_CHAR; |
217 | if (rows != -1) { |
218 | crows = rows + (scrtop - sbtop) / (cols+1); |
219 | if (crows > newrows+newsavelines) |
220 | crows = newrows+newsavelines; |
221 | ccols = (cols < newcols ? cols : newcols); |
222 | for (i=0; i<crows; i++) { |
223 | int oldidx = (rows + savelines - crows + i) * (cols+1); |
224 | int newidx = (newrows + newsavelines - crows + i) * (newcols+1); |
225 | for (j=0; j<ccols; j++) |
226 | newtext[newidx+j] = text[oldidx+j]; |
227 | newtext[newidx+newcols] = |
228 | (cols == newcols ? text[oldidx+cols] : 0); |
229 | } |
230 | sbtop = disptop - (crows - newrows) * (newcols+1); |
231 | if (sbtop > disptop) |
232 | sbtop = disptop; |
233 | } else |
234 | sbtop = disptop; |
235 | scrtop = disptop; |
236 | sfree (text); |
237 | text = newtext; |
238 | |
239 | newdisp = smalloc (newrows*(newcols+1)*TSIZE); |
240 | for (i=0; i<newrows*(newcols+1); i++) |
241 | newdisp[i] = ATTR_INVALID; |
242 | sfree (disptext); |
243 | disptext = newdisp; |
244 | |
245 | newwant = smalloc (newrows*(newcols+1)*TSIZE); |
246 | for (i=0; i<newrows*(newcols+1); i++) |
247 | newwant[i] = ATTR_INVALID; |
248 | sfree (wanttext); |
249 | wanttext = newwant; |
250 | |
251 | newalt = smalloc (newrows*(newcols+1)*TSIZE); |
252 | for (i=0; i<newrows*(newcols+1); i++) |
253 | newalt[i] = ERASE_CHAR; |
254 | sfree (alttext); |
255 | alttext = newalt; |
256 | |
257 | sfree (selspace); |
258 | selspace = smalloc ( (newrows+newsavelines) * (newcols+sizeof(sel_nl)) ); |
259 | |
260 | tabs = srealloc (tabs, newcols*sizeof(*tabs)); |
261 | { |
262 | int i; |
263 | for (i = (cols > 0 ? cols : 0); i < newcols; i++) |
264 | tabs[i] = (i % 8 == 0 ? TRUE : FALSE); |
265 | } |
266 | |
267 | if (rows > 0) |
268 | curs_y += newrows - rows; |
269 | if (curs_y < 0) |
270 | curs_y = 0; |
271 | if (curs_y >= newrows) |
272 | curs_y = newrows-1; |
273 | if (curs_x >= newcols) |
274 | curs_x = newcols-1; |
275 | alt_x = alt_y = 0; |
276 | wrapnext = alt_wnext = FALSE; |
277 | |
278 | rows = newrows; |
279 | cols = newcols; |
280 | savelines = newsavelines; |
281 | fix_cpos; |
282 | |
283 | deselect(); |
284 | update_sbar(); |
285 | term_update(); |
286 | } |
287 | |
288 | /* |
289 | * Swap screens. |
290 | */ |
291 | static void swap_screen (int which) { |
292 | int t; |
293 | unsigned long tt; |
294 | |
295 | if (which == alt_which) |
296 | return; |
297 | |
298 | alt_which = which; |
299 | |
300 | for (t=0; t<rows*(cols+1); t++) { |
301 | tt = scrtop[t]; scrtop[t] = alttext[t]; alttext[t] = tt; |
302 | } |
303 | |
304 | t = curs_x; curs_x = alt_x; alt_x = t; |
305 | t = curs_y; curs_y = alt_y; alt_y = t; |
306 | t = marg_t; marg_t = alt_t; alt_t = t; |
307 | t = marg_b; marg_b = alt_b; alt_b = t; |
308 | t = dec_om; dec_om = alt_om; alt_om = t; |
309 | t = wrap; wrap = alt_wrap; alt_wrap = t; |
310 | t = wrapnext; wrapnext = alt_wnext; alt_wnext = t; |
311 | t = insert; insert = alt_ins; alt_ins = t; |
312 | t = cset; cset = alt_cset; alt_cset = t; |
313 | |
314 | fix_cpos; |
315 | } |
316 | |
317 | /* |
318 | * Retrieve a character from `inbuf'. |
319 | */ |
320 | static int inbuf_getc(void) { |
321 | if (inbuf_head == inbuf_reap) |
322 | return -1; /* EOF */ |
323 | else { |
324 | int n = inbuf_reap; |
325 | inbuf_reap = (inbuf_reap+1) & INBUF_MASK; |
326 | return inbuf[n]; |
327 | } |
328 | } |
329 | |
330 | /* |
331 | * Update the scroll bar. |
332 | */ |
333 | static void update_sbar(void) { |
334 | int min; |
335 | |
336 | min = (sbtop - text) / (cols+1); |
337 | set_sbar ((scrtop - text) / (cols+1) + rows - min, |
338 | (disptop - text) / (cols+1) - min, |
339 | rows); |
340 | } |
341 | |
342 | /* |
343 | * Check whether the region bounded by the two pointers intersects |
344 | * the scroll region, and de-select the on-screen selection if so. |
345 | */ |
346 | static void check_selection (unsigned long *from, unsigned long *to) { |
347 | if (from < selend && selstart < to) |
348 | deselect(); |
349 | } |
350 | |
351 | /* |
352 | * Scroll the screen. (`lines' is +ve for scrolling forward, -ve |
353 | * for backward.) `sb' is TRUE if the scrolling is permitted to |
354 | * affect the scrollback buffer. |
355 | */ |
356 | static void scroll (int topline, int botline, int lines, int sb) { |
357 | unsigned long *scroll_top; |
358 | int scroll_size, size, i; |
359 | |
360 | scroll_top = scrtop + topline*(cols+1); |
361 | size = (lines < 0 ? -lines : lines) * (cols+1); |
362 | scroll_size = (botline - topline + 1) * (cols+1) - size; |
363 | |
cabfd08c |
364 | if (lines > 0 && topline == 0 && alt_which == 0 && sb) { |
374330e2 |
365 | /* |
cabfd08c |
366 | * Since we're going to scroll the top line and we're on the |
367 | * scrolling screen let's also affect the scrollback buffer. |
374330e2 |
368 | */ |
369 | sbtop -= lines * (cols+1); |
370 | if (sbtop < text) |
371 | sbtop = text; |
372 | scroll_size += scroll_top - sbtop; |
373 | scroll_top = sbtop; |
374 | update_sbar(); |
375 | } |
376 | |
377 | if (scroll_size < 0) { |
378 | size += scroll_size; |
379 | scroll_size = 0; |
380 | } |
381 | |
382 | if (lines > 0) { |
383 | if (scroll_size) |
384 | memmove (scroll_top, scroll_top + size, scroll_size*TSIZE); |
385 | for (i = 0; i < size; i++) |
386 | scroll_top[i+scroll_size] = ERASE_CHAR; |
387 | if (selstart > scroll_top && |
388 | selstart < scroll_top + size + scroll_size) { |
389 | selstart -= size; |
390 | if (selstart < scroll_top) |
391 | selstart = scroll_top; |
392 | } |
393 | if (selend > scroll_top && |
394 | selend < scroll_top + size + scroll_size) { |
395 | selend -= size; |
396 | if (selend < scroll_top) |
397 | selend = scroll_top; |
398 | } |
399 | } else { |
400 | if (scroll_size) |
401 | memmove (scroll_top + size, scroll_top, scroll_size*TSIZE); |
402 | for (i = 0; i < size; i++) |
403 | scroll_top[i] = ERASE_CHAR; |
404 | if (selstart > scroll_top && |
405 | selstart < scroll_top + size + scroll_size) { |
406 | selstart += size; |
407 | if (selstart > scroll_top + size + scroll_size) |
408 | selstart = scroll_top + size + scroll_size; |
409 | } |
410 | if (selend > scroll_top && |
411 | selend < scroll_top + size + scroll_size) { |
412 | selend += size; |
413 | if (selend > scroll_top + size + scroll_size) |
414 | selend = scroll_top + size + scroll_size; |
415 | } |
416 | } |
417 | |
418 | scroll_heuristic += lines; |
419 | } |
420 | |
421 | /* |
422 | * Move the cursor to a given position, clipping at boundaries. We |
423 | * may or may not want to clip at the scroll margin: marg_clip is 0 |
424 | * not to, 1 to disallow _passing_ the margins, and 2 to disallow |
425 | * even _being_ outside the margins. |
426 | */ |
427 | static void move (int x, int y, int marg_clip) { |
428 | if (x < 0) |
429 | x = 0; |
430 | if (x >= cols) |
431 | x = cols-1; |
432 | if (marg_clip) { |
433 | if ((curs_y >= marg_t || marg_clip == 2) && y < marg_t) |
434 | y = marg_t; |
435 | if ((curs_y <= marg_b || marg_clip == 2) && y > marg_b) |
436 | y = marg_b; |
437 | } |
438 | if (y < 0) |
439 | y = 0; |
440 | if (y >= rows) |
441 | y = rows-1; |
442 | curs_x = x; |
443 | curs_y = y; |
444 | fix_cpos; |
445 | wrapnext = FALSE; |
446 | } |
447 | |
448 | /* |
449 | * Save or restore the cursor and SGR mode. |
450 | */ |
451 | static void save_cursor(int save) { |
452 | if (save) { |
453 | save_x = curs_x; |
454 | save_y = curs_y; |
455 | save_attr = curr_attr; |
456 | save_cset = cset; |
457 | save_csattr = cset_attr[cset]; |
458 | } else { |
459 | curs_x = save_x; |
460 | curs_y = save_y; |
461 | curr_attr = save_attr; |
462 | cset = save_cset; |
463 | cset_attr[cset] = save_csattr; |
464 | fix_cpos; |
465 | } |
466 | } |
467 | |
468 | /* |
469 | * Erase a large portion of the screen: the whole screen, or the |
470 | * whole line, or parts thereof. |
471 | */ |
472 | static void erase_lots (int line_only, int from_begin, int to_end) { |
473 | unsigned long *startpos, *endpos; |
474 | |
475 | if (line_only) { |
476 | startpos = cpos - curs_x; |
477 | endpos = startpos + cols+1; |
478 | } else { |
479 | startpos = scrtop; |
480 | endpos = startpos + rows * (cols+1); |
481 | } |
482 | if (!from_begin) |
483 | startpos = cpos; |
484 | if (!to_end) |
485 | endpos = cpos; |
486 | check_selection (startpos, endpos); |
487 | while (startpos < endpos) |
488 | *startpos++ = ERASE_CHAR; |
489 | } |
490 | |
491 | /* |
492 | * Insert or delete characters within the current line. n is +ve if |
493 | * insertion is desired, and -ve for deletion. |
494 | */ |
495 | static void insch (int n) { |
496 | int dir = (n < 0 ? -1 : +1); |
497 | int m; |
498 | |
499 | n = (n < 0 ? -n : n); |
500 | if (n > cols - curs_x) |
501 | n = cols - curs_x; |
502 | m = cols - curs_x - n; |
503 | check_selection (cpos, cpos+n); |
504 | if (dir < 0) { |
505 | memmove (cpos, cpos+n, m*TSIZE); |
506 | while (n--) |
507 | cpos[m++] = ERASE_CHAR; |
508 | } else { |
509 | memmove (cpos+n, cpos, m*TSIZE); |
510 | while (n--) |
511 | cpos[n] = ERASE_CHAR; |
512 | } |
513 | } |
514 | |
515 | /* |
516 | * Toggle terminal mode `mode' to state `state'. (`query' indicates |
517 | * whether the mode is a DEC private one or a normal one.) |
518 | */ |
519 | static void toggle_mode (int mode, int query, int state) { |
520 | if (query) switch (mode) { |
521 | case 1: /* application cursor keys */ |
522 | app_cursor_keys = state; |
523 | break; |
524 | case 3: /* 80/132 columns */ |
525 | deselect(); |
526 | request_resize (state ? 132 : 80, rows); |
527 | break; |
528 | case 5: /* reverse video */ |
529 | rvideo = state; |
cabfd08c |
530 | seen_disp_event = TRUE; |
374330e2 |
531 | break; |
532 | case 6: /* DEC origin mode */ |
533 | dec_om = state; |
534 | break; |
535 | case 7: /* auto wrap */ |
536 | wrap = state; |
537 | break; |
538 | case 47: /* alternate screen */ |
539 | deselect(); |
540 | swap_screen (state); |
541 | disptop = scrtop; |
542 | break; |
543 | } else switch (mode) { |
544 | case 4: /* set insert mode */ |
545 | insert = state; |
546 | break; |
547 | } |
548 | } |
549 | |
550 | /* |
551 | * Process an OSC sequence: set window title or icon name. |
552 | */ |
553 | static void do_osc(void) { |
554 | if (osc_w) { |
555 | while (osc_strlen--) |
556 | wordness[(unsigned char)osc_string[osc_strlen]] = esc_args[0]; |
557 | } else { |
558 | osc_string[osc_strlen] = '\0'; |
559 | switch (esc_args[0]) { |
560 | case 0: |
561 | case 1: |
562 | set_icon (osc_string); |
563 | if (esc_args[0] == 1) |
564 | break; |
565 | /* fall through: parameter 0 means set both */ |
566 | case 2: |
567 | case 21: |
568 | set_title (osc_string); |
569 | break; |
570 | } |
571 | } |
572 | } |
573 | |
574 | /* |
575 | * Remove everything currently in `inbuf' and stick it up on the |
576 | * in-memory display. There's a big state machine in here to |
577 | * process escape sequences... |
578 | */ |
579 | void term_out(void) { |
580 | int c; |
374330e2 |
581 | |
582 | while ( (c = inbuf_getc()) != -1) { |
5fd04f07 |
583 | /* |
584 | * Optionally log the session traffic to a file. Useful for |
585 | * debugging and possibly also useful for actual logging. |
586 | */ |
587 | if (logfile) { |
374330e2 |
588 | static FILE *fp = NULL; |
5fd04f07 |
589 | if (!fp) fp = fopen(logfile, "wb"); |
374330e2 |
590 | if (fp) fputc (c, fp); |
591 | } |
cabfd08c |
592 | if( termstate < DO_CTRLS && (c&0x60) == 0 ) { |
374330e2 |
593 | switch (c) { |
594 | case '\005': /* terminal type query */ |
cabfd08c |
595 | ldisc->send ("PuTTY\r", 6); |
374330e2 |
596 | break; |
597 | case '\007': |
598 | beep(); |
599 | disptop = scrtop; |
374330e2 |
600 | break; |
601 | case '\b': |
602 | if (curs_x == 0 && curs_y > 0) |
603 | curs_x = cols-1, curs_y--; |
604 | else if (wrapnext) |
605 | wrapnext = FALSE; |
606 | else |
607 | curs_x--; |
608 | fix_cpos; |
cabfd08c |
609 | seen_disp_event = TRUE; |
374330e2 |
610 | break; |
611 | case '\016': |
612 | cset = 1; |
613 | break; |
614 | case '\017': |
615 | cset = 0; |
616 | break; |
617 | case '\033': |
618 | termstate = SEEN_ESC; |
619 | break; |
620 | case 0233: |
621 | termstate = SEEN_CSI; |
622 | esc_nargs = 1; |
623 | esc_args[0] = ARG_DEFAULT; |
624 | esc_query = FALSE; |
625 | break; |
626 | case 0235: |
627 | termstate = SEEN_OSC; |
628 | esc_args[0] = 0; |
629 | break; |
630 | case '\r': |
631 | curs_x = 0; |
632 | wrapnext = FALSE; |
633 | fix_cpos; |
cabfd08c |
634 | seen_disp_event = TRUE; |
374330e2 |
635 | break; |
636 | case '\013': |
637 | case '\014': |
638 | case '\n': |
639 | if (curs_y == marg_b) |
640 | scroll (marg_t, marg_b, 1, TRUE); |
641 | else if (curs_y < rows-1) |
642 | curs_y++; |
cabfd08c |
643 | if (cfg.lfhascr) |
644 | curs_x = 0; |
374330e2 |
645 | fix_cpos; |
646 | wrapnext = FALSE; |
cabfd08c |
647 | seen_disp_event = 1; |
374330e2 |
648 | nl_count++; |
649 | break; |
650 | case '\t': |
651 | do { |
652 | curs_x++; |
653 | } while (curs_x < cols-1 && !tabs[curs_x]); |
654 | if (curs_x >= cols) |
655 | curs_x = cols-1; |
656 | { |
657 | unsigned long *old_cpos = cpos; |
658 | fix_cpos; |
659 | check_selection (old_cpos, cpos); |
660 | } |
cabfd08c |
661 | seen_disp_event = TRUE; |
374330e2 |
662 | break; |
cabfd08c |
663 | } |
664 | } |
665 | else switch (termstate) { |
666 | case TOPLEVEL: |
8b811b12 |
667 | /* Only graphic characters get this far, ctrls are stripped above */ |
668 | if (wrapnext) { |
669 | cpos[1] = ATTR_WRAPPED; |
670 | if (curs_y == marg_b) |
671 | scroll (marg_t, marg_b, 1, TRUE); |
672 | else if (curs_y < rows-1) |
673 | curs_y++; |
674 | curs_x = 0; |
675 | fix_cpos; |
676 | wrapnext = FALSE; |
677 | nl_count++; |
678 | } |
679 | if (insert) |
680 | insch (1); |
681 | check_selection (cpos, cpos+1); |
682 | *cpos++ = xlat_tty2scr((unsigned char)c) | curr_attr | |
683 | (c <= 0x7F ? cset_attr[cset] : ATTR_ASCII); |
684 | curs_x++; |
685 | if (curs_x == cols) { |
686 | cpos--; |
687 | curs_x--; |
688 | wrapnext = wrap; |
374330e2 |
689 | } |
8b811b12 |
690 | seen_disp_event = 1; |
374330e2 |
691 | break; |
cabfd08c |
692 | |
374330e2 |
693 | case IGNORE_NEXT: |
694 | termstate = TOPLEVEL; |
695 | break; |
696 | case OSC_MAYBE_ST: |
697 | /* |
698 | * This state is virtually identical to SEEN_ESC, with the |
699 | * exception that we have an OSC sequence in the pipeline, |
700 | * and _if_ we see a backslash, we process it. |
701 | */ |
702 | if (c == '\\') { |
703 | do_osc(); |
704 | termstate = TOPLEVEL; |
705 | break; |
706 | } |
707 | /* else fall through */ |
708 | case SEEN_ESC: |
709 | termstate = TOPLEVEL; |
710 | switch (c) { |
374330e2 |
711 | case ' ': /* some weird sequence? */ |
712 | termstate = IGNORE_NEXT; |
713 | break; |
714 | case '[': /* enter CSI mode */ |
715 | termstate = SEEN_CSI; |
716 | esc_nargs = 1; |
717 | esc_args[0] = ARG_DEFAULT; |
718 | esc_query = FALSE; |
719 | break; |
720 | case ']': /* xterm escape sequences */ |
721 | termstate = SEEN_OSC; |
722 | esc_args[0] = 0; |
723 | break; |
724 | case '(': /* should set GL */ |
725 | termstate = SET_GL; |
726 | break; |
727 | case ')': /* should set GR */ |
728 | termstate = SET_GR; |
729 | break; |
730 | case '7': /* save cursor */ |
731 | save_cursor (TRUE); |
732 | break; |
733 | case '8': /* restore cursor */ |
734 | save_cursor (FALSE); |
cabfd08c |
735 | seen_disp_event = TRUE; |
374330e2 |
736 | break; |
737 | case '=': |
738 | app_keypad_keys = TRUE; |
739 | break; |
740 | case '>': |
741 | app_keypad_keys = FALSE; |
742 | break; |
743 | case 'D': /* exactly equivalent to LF */ |
744 | if (curs_y == marg_b) |
745 | scroll (marg_t, marg_b, 1, TRUE); |
746 | else if (curs_y < rows-1) |
747 | curs_y++; |
748 | fix_cpos; |
749 | wrapnext = FALSE; |
cabfd08c |
750 | seen_disp_event = TRUE; |
374330e2 |
751 | nl_count++; |
752 | break; |
753 | case 'E': /* exactly equivalent to CR-LF */ |
754 | curs_x = 0; |
755 | wrapnext = FALSE; |
756 | if (curs_y == marg_b) |
757 | scroll (marg_t, marg_b, 1, TRUE); |
758 | else if (curs_y < rows-1) |
759 | curs_y++; |
760 | fix_cpos; |
761 | wrapnext = FALSE; |
762 | nl_count++; |
cabfd08c |
763 | seen_disp_event = TRUE; |
374330e2 |
764 | break; |
765 | case 'M': /* reverse index - backwards LF */ |
766 | if (curs_y == marg_t) |
767 | scroll (marg_t, marg_b, -1, TRUE); |
768 | else if (curs_y > 0) |
769 | curs_y--; |
770 | fix_cpos; |
771 | wrapnext = FALSE; |
cabfd08c |
772 | seen_disp_event = TRUE; |
374330e2 |
773 | break; |
774 | case 'Z': /* terminal type query */ |
5bc238bb |
775 | ldisc->send ("\033[?6c", 5); |
374330e2 |
776 | break; |
777 | case 'c': /* restore power-on settings */ |
778 | power_on(); |
779 | fix_cpos; |
780 | disptop = scrtop; |
cabfd08c |
781 | seen_disp_event = TRUE; |
374330e2 |
782 | break; |
783 | case '#': /* ESC # 8 fills screen with Es :-) */ |
784 | termstate = SEEN_ESCHASH; |
785 | break; |
786 | case 'H': /* set a tab */ |
787 | tabs[curs_x] = TRUE; |
788 | break; |
789 | } |
790 | break; |
791 | case SEEN_CSI: |
792 | termstate = TOPLEVEL; /* default */ |
8b811b12 |
793 | if( isdigit(c) ) |
794 | { |
374330e2 |
795 | if (esc_nargs <= ARGS_MAX) { |
796 | if (esc_args[esc_nargs-1] == ARG_DEFAULT) |
797 | esc_args[esc_nargs-1] = 0; |
798 | esc_args[esc_nargs-1] = |
799 | 10 * esc_args[esc_nargs-1] + c - '0'; |
800 | } |
801 | termstate = SEEN_CSI; |
8b811b12 |
802 | } |
803 | else if( c == ';' ) |
804 | { |
374330e2 |
805 | if (++esc_nargs <= ARGS_MAX) |
806 | esc_args[esc_nargs-1] = ARG_DEFAULT; |
807 | termstate = SEEN_CSI; |
8b811b12 |
808 | } |
809 | else if( c < '@' ) |
810 | { |
811 | if( esc_query ) esc_query = -1; |
812 | else if( c == '?' ) esc_query = TRUE; |
813 | else esc_query = c; |
374330e2 |
814 | termstate = SEEN_CSI; |
8b811b12 |
815 | } |
816 | else switch (ANSI(c,esc_query)) { |
374330e2 |
817 | case 'A': /* move up N lines */ |
818 | move (curs_x, curs_y - def(esc_args[0], 1), 1); |
cabfd08c |
819 | seen_disp_event = TRUE; |
374330e2 |
820 | break; |
821 | case 'B': case 'e': /* move down N lines */ |
822 | move (curs_x, curs_y + def(esc_args[0], 1), 1); |
cabfd08c |
823 | seen_disp_event = TRUE; |
374330e2 |
824 | break; |
825 | case 'C': case 'a': /* move right N cols */ |
826 | move (curs_x + def(esc_args[0], 1), curs_y, 1); |
cabfd08c |
827 | seen_disp_event = TRUE; |
374330e2 |
828 | break; |
829 | case 'D': /* move left N cols */ |
830 | move (curs_x - def(esc_args[0], 1), curs_y, 1); |
cabfd08c |
831 | seen_disp_event = TRUE; |
374330e2 |
832 | break; |
833 | case 'E': /* move down N lines and CR */ |
834 | move (0, curs_y + def(esc_args[0], 1), 1); |
cabfd08c |
835 | seen_disp_event = TRUE; |
374330e2 |
836 | break; |
837 | case 'F': /* move up N lines and CR */ |
838 | move (0, curs_y - def(esc_args[0], 1), 1); |
cabfd08c |
839 | seen_disp_event = TRUE; |
374330e2 |
840 | break; |
841 | case 'G': case '`': /* set horizontal posn */ |
842 | move (def(esc_args[0], 1) - 1, curs_y, 0); |
cabfd08c |
843 | seen_disp_event = TRUE; |
374330e2 |
844 | break; |
845 | case 'd': /* set vertical posn */ |
846 | move (curs_x, (dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1, |
847 | (dec_om ? 2 : 0)); |
cabfd08c |
848 | seen_disp_event = TRUE; |
374330e2 |
849 | break; |
850 | case 'H': case 'f': /* set horz and vert posns at once */ |
851 | if (esc_nargs < 2) |
852 | esc_args[1] = ARG_DEFAULT; |
853 | move (def(esc_args[1], 1) - 1, |
854 | (dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1, |
855 | (dec_om ? 2 : 0)); |
cabfd08c |
856 | seen_disp_event = TRUE; |
374330e2 |
857 | break; |
858 | case 'J': /* erase screen or parts of it */ |
859 | { |
860 | unsigned int i = def(esc_args[0], 0) + 1; |
861 | if (i > 3) |
862 | i = 0; |
863 | erase_lots(FALSE, !!(i & 2), !!(i & 1)); |
864 | } |
865 | disptop = scrtop; |
cabfd08c |
866 | seen_disp_event = TRUE; |
374330e2 |
867 | break; |
868 | case 'K': /* erase line or parts of it */ |
869 | { |
870 | unsigned int i = def(esc_args[0], 0) + 1; |
871 | if (i > 3) |
872 | i = 0; |
873 | erase_lots(TRUE, !!(i & 2), !!(i & 1)); |
874 | } |
cabfd08c |
875 | seen_disp_event = TRUE; |
374330e2 |
876 | break; |
877 | case 'L': /* insert lines */ |
878 | if (curs_y <= marg_b) |
879 | scroll (curs_y, marg_b, -def(esc_args[0], 1), FALSE); |
cabfd08c |
880 | seen_disp_event = TRUE; |
374330e2 |
881 | break; |
882 | case 'M': /* delete lines */ |
883 | if (curs_y <= marg_b) |
cabfd08c |
884 | scroll (curs_y, marg_b, def(esc_args[0], 1), TRUE); |
885 | seen_disp_event = TRUE; |
374330e2 |
886 | break; |
887 | case '@': /* insert chars */ |
888 | insch (def(esc_args[0], 1)); |
cabfd08c |
889 | seen_disp_event = TRUE; |
374330e2 |
890 | break; |
891 | case 'P': /* delete chars */ |
892 | insch (-def(esc_args[0], 1)); |
cabfd08c |
893 | seen_disp_event = TRUE; |
374330e2 |
894 | break; |
895 | case 'c': /* terminal type query */ |
5bc238bb |
896 | ldisc->send ("\033[?6c", 5); |
374330e2 |
897 | break; |
898 | case 'n': /* cursor position query */ |
899 | if (esc_args[0] == 6) { |
900 | char buf[32]; |
901 | sprintf (buf, "\033[%d;%dR", curs_y + 1, curs_x + 1); |
5bc238bb |
902 | ldisc->send (buf, strlen(buf)); |
374330e2 |
903 | } |
904 | break; |
905 | case 'h': /* toggle a mode to high */ |
8b811b12 |
906 | case ANSI_QUE('h'): |
374330e2 |
907 | toggle_mode (esc_args[0], esc_query, TRUE); |
908 | break; |
909 | case 'l': /* toggle a mode to low */ |
8b811b12 |
910 | case ANSI_QUE('l'): |
374330e2 |
911 | toggle_mode (esc_args[0], esc_query, FALSE); |
912 | break; |
913 | case 'g': /* clear tabs */ |
914 | if (esc_nargs == 1) { |
915 | if (esc_args[0] == 0) { |
916 | tabs[curs_x] = FALSE; |
917 | } else if (esc_args[0] == 3) { |
918 | int i; |
919 | for (i = 0; i < cols; i++) |
920 | tabs[i] = FALSE; |
921 | } |
922 | } |
923 | break; |
924 | case 'r': /* set scroll margins */ |
8b811b12 |
925 | if (esc_nargs <= 2) { |
374330e2 |
926 | int top, bot; |
927 | top = def(esc_args[0], 1) - 1; |
928 | if (top < 0) |
929 | top = 0; |
373e84fb |
930 | bot = (esc_nargs <= 1 || esc_args[1] == 0 ? rows : |
374330e2 |
931 | def(esc_args[1], rows)) - 1; |
932 | if (bot >= rows) |
933 | bot = rows-1; |
934 | if (top <= bot) { |
935 | marg_t = top; |
936 | marg_b = bot; |
937 | curs_x = 0; |
938 | /* |
939 | * I used to think the cursor should be |
940 | * placed at the top of the newly marginned |
941 | * area. Apparently not: VMS TPU falls over |
942 | * if so. |
943 | */ |
944 | curs_y = 0; |
945 | fix_cpos; |
cabfd08c |
946 | seen_disp_event = TRUE; |
374330e2 |
947 | } |
948 | } |
949 | break; |
950 | case 'm': /* set graphics rendition */ |
951 | { |
952 | int i; |
953 | for (i=0; i<esc_nargs; i++) { |
954 | switch (def(esc_args[i], 0)) { |
955 | case 0: /* restore defaults */ |
956 | curr_attr = ATTR_DEFAULT; break; |
957 | case 1: /* enable bold */ |
958 | curr_attr |= ATTR_BOLD; break; |
959 | case 4: /* enable underline */ |
960 | case 21: /* (enable double underline) */ |
961 | curr_attr |= ATTR_UNDER; break; |
962 | case 7: /* enable reverse video */ |
963 | curr_attr |= ATTR_REVERSE; break; |
964 | case 22: /* disable bold */ |
965 | curr_attr &= ~ATTR_BOLD; break; |
966 | case 24: /* disable underline */ |
967 | curr_attr &= ~ATTR_UNDER; break; |
968 | case 27: /* disable reverse video */ |
969 | curr_attr &= ~ATTR_REVERSE; break; |
970 | case 30: case 31: case 32: case 33: |
971 | case 34: case 35: case 36: case 37: |
972 | /* foreground */ |
973 | curr_attr &= ~ATTR_FGMASK; |
974 | curr_attr |= (esc_args[i] - 30) << ATTR_FGSHIFT; |
975 | break; |
976 | case 39: /* default-foreground */ |
977 | curr_attr &= ~ATTR_FGMASK; |
978 | curr_attr |= ATTR_DEFFG; |
979 | break; |
980 | case 40: case 41: case 42: case 43: |
981 | case 44: case 45: case 46: case 47: |
982 | /* background */ |
983 | curr_attr &= ~ATTR_BGMASK; |
984 | curr_attr |= (esc_args[i] - 40) << ATTR_BGSHIFT; |
985 | break; |
986 | case 49: /* default-background */ |
987 | curr_attr &= ~ATTR_BGMASK; |
988 | curr_attr |= ATTR_DEFBG; |
989 | break; |
990 | } |
991 | } |
992 | } |
993 | break; |
994 | case 's': /* save cursor */ |
995 | save_cursor (TRUE); |
996 | break; |
997 | case 'u': /* restore cursor */ |
998 | save_cursor (FALSE); |
cabfd08c |
999 | seen_disp_event = TRUE; |
374330e2 |
1000 | break; |
1001 | case 't': /* set page size - ie window height */ |
1002 | request_resize (cols, def(esc_args[0], 24)); |
1003 | deselect(); |
1004 | break; |
1005 | case 'X': /* write N spaces w/o moving cursor */ |
1006 | { |
1007 | int n = def(esc_args[0], 1); |
1008 | unsigned long *p = cpos; |
1009 | if (n > cols - curs_x) |
1010 | n = cols - curs_x; |
1011 | check_selection (cpos, cpos+n); |
1012 | while (n--) |
1013 | *p++ = ERASE_CHAR; |
cabfd08c |
1014 | seen_disp_event = TRUE; |
374330e2 |
1015 | } |
1016 | break; |
1017 | case 'x': /* report terminal characteristics */ |
1018 | { |
1019 | char buf[32]; |
1020 | int i = def(esc_args[0], 0); |
1021 | if (i == 0 || i == 1) { |
1022 | strcpy (buf, "\033[2;1;1;112;112;1;0x"); |
1023 | buf[2] += i; |
5bc238bb |
1024 | ldisc->send (buf, 20); |
374330e2 |
1025 | } |
1026 | } |
1027 | break; |
1028 | } |
1029 | break; |
1030 | case SET_GL: |
1031 | case SET_GR: |
1032 | switch (c) { |
1033 | case 'A': |
1034 | cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_GBCHR; |
1035 | break; |
1036 | case '0': |
1037 | cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_LINEDRW; |
1038 | break; |
1039 | default: /* specifically, 'B' */ |
1040 | cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_ASCII; |
1041 | break; |
1042 | } |
8b811b12 |
1043 | if( c != '%' ) |
1044 | termstate = TOPLEVEL; |
374330e2 |
1045 | break; |
1046 | case SEEN_OSC: |
1047 | osc_w = FALSE; |
1048 | switch (c) { |
374330e2 |
1049 | case 'P': /* Linux palette sequence */ |
1050 | termstate = SEEN_OSC_P; |
1051 | osc_strlen = 0; |
1052 | break; |
1053 | case 'R': /* Linux palette reset */ |
1054 | palette_reset(); |
1055 | term_invalidate(); |
1056 | termstate = TOPLEVEL; |
1057 | break; |
1058 | case 'W': /* word-set */ |
1059 | termstate = SEEN_OSC_W; |
1060 | osc_w = TRUE; |
1061 | break; |
1062 | case '0': case '1': case '2': case '3': case '4': |
1063 | case '5': case '6': case '7': case '8': case '9': |
1064 | esc_args[0] = 10 * esc_args[0] + c - '0'; |
1065 | break; |
1066 | case 'L': |
1067 | /* |
1068 | * Grotty hack to support xterm and DECterm title |
1069 | * sequences concurrently. |
1070 | */ |
1071 | if (esc_args[0] == 2) { |
1072 | esc_args[0] = 1; |
1073 | break; |
1074 | } |
1075 | /* else fall through */ |
1076 | default: |
1077 | termstate = OSC_STRING; |
1078 | osc_strlen = 0; |
1079 | } |
1080 | break; |
1081 | case OSC_STRING: |
8b811b12 |
1082 | /* |
1083 | * This OSC stuff is EVIL. It takes just one character to get into |
1084 | * sysline mode and it's not initially obvious how to get out. |
1085 | * So I've added CR and LF as string aborts. |
1086 | * This shouldn't effect compatibility as I believe embedded |
1087 | * control characters are supposed to be interpreted (maybe?) |
1088 | * and they don't display anything useful anyway. |
1089 | * |
1090 | * -- RDB |
1091 | */ |
1092 | if (c == '\n' || c == '\r') { |
1093 | termstate = TOPLEVEL; |
1094 | } else if (c == 0234 || c == '\007' ) { |
374330e2 |
1095 | /* |
1096 | * These characters terminate the string; ST and BEL |
1097 | * terminate the sequence and trigger instant |
1098 | * processing of it, whereas ESC goes back to SEEN_ESC |
1099 | * mode unless it is followed by \, in which case it is |
1100 | * synonymous with ST in the first place. |
1101 | */ |
1102 | do_osc(); |
1103 | termstate = TOPLEVEL; |
1104 | } else if (c == '\033') |
1105 | termstate = OSC_MAYBE_ST; |
1106 | else if (osc_strlen < OSC_STR_MAX) |
1107 | osc_string[osc_strlen++] = c; |
1108 | break; |
1109 | case SEEN_OSC_P: |
1110 | { |
1111 | int max = (osc_strlen == 0 ? 21 : 16); |
1112 | int val; |
1113 | if (c >= '0' && c <= '9') |
1114 | val = c - '0'; |
1115 | else if (c >= 'A' && c <= 'A'+max-10) |
1116 | val = c - 'A' + 10; |
1117 | else if (c >= 'a' && c <= 'a'+max-10) |
1118 | val = c - 'a' + 10; |
1119 | else |
1120 | termstate = TOPLEVEL; |
1121 | osc_string[osc_strlen++] = val; |
1122 | if (osc_strlen >= 7) { |
1123 | palette_set (osc_string[0], |
1124 | osc_string[1] * 16 + osc_string[2], |
1125 | osc_string[3] * 16 + osc_string[4], |
1126 | osc_string[5] * 16 + osc_string[6]); |
1127 | term_invalidate(); |
1128 | termstate = TOPLEVEL; |
1129 | } |
1130 | } |
1131 | break; |
1132 | case SEEN_OSC_W: |
1133 | switch (c) { |
374330e2 |
1134 | case '0': case '1': case '2': case '3': case '4': |
1135 | case '5': case '6': case '7': case '8': case '9': |
1136 | esc_args[0] = 10 * esc_args[0] + c - '0'; |
1137 | break; |
1138 | default: |
1139 | termstate = OSC_STRING; |
1140 | osc_strlen = 0; |
1141 | } |
1142 | break; |
1143 | case SEEN_ESCHASH: |
1144 | if (c == '8') { |
1145 | unsigned long *p = scrtop; |
1146 | int n = rows * (cols+1); |
1147 | while (n--) |
1148 | *p++ = ATTR_DEFAULT | 'E'; |
1149 | disptop = scrtop; |
cabfd08c |
1150 | seen_disp_event = TRUE; |
374330e2 |
1151 | check_selection (scrtop, scrtop + rows * (cols+1)); |
1152 | } |
1153 | termstate = TOPLEVEL; |
1154 | break; |
1155 | } |
1156 | check_selection (cpos, cpos+1); |
1157 | } |
1158 | |
cabfd08c |
1159 | if (nl_count > MAXNL) |
374330e2 |
1160 | term_update(); |
1161 | } |
1162 | |
1163 | /* |
1164 | * Compare two lines to determine whether they are sufficiently |
1165 | * alike to scroll-optimise one to the other. Return the degree of |
1166 | * similarity. |
1167 | */ |
1168 | static int linecmp (unsigned long *a, unsigned long *b) { |
1169 | int i, n; |
1170 | |
1171 | for (i=n=0; i < cols; i++) |
1172 | n += (*a++ == *b++); |
1173 | return n; |
1174 | } |
1175 | |
1176 | /* |
1177 | * Given a context, update the window. Out of paranoia, we don't |
1178 | * allow WM_PAINT responses to do scrolling optimisations. |
1179 | */ |
1180 | static void do_paint (Context ctx, int may_optimise){ |
1181 | int i, j, start, our_curs_y; |
1182 | unsigned long attr, rv, cursor; |
1183 | char ch[1024]; |
1184 | |
1185 | cursor = (has_focus ? ATTR_ACTCURS : ATTR_PASCURS); |
1186 | rv = (rvideo ? ATTR_REVERSE : 0); |
1187 | our_curs_y = curs_y + (scrtop - disptop) / (cols+1); |
1188 | |
1189 | for (i=0; i<rows; i++) { |
1190 | int idx = i*(cols+1); |
1191 | for (j=0; j<=cols; j++,idx++) { |
1192 | unsigned long *d = disptop+idx; |
1193 | wanttext[idx] = ((*d ^ rv |
1194 | ^ (selstart <= d && d < selend ? |
1195 | ATTR_REVERSE : 0)) | |
1196 | (i==our_curs_y && j==curs_x ? cursor : 0)); |
1197 | } |
1198 | } |
1199 | |
1200 | /* |
1201 | * We would perform scrolling optimisations in here, if they |
1202 | * didn't have a nasty tendency to cause the whole sodding |
1203 | * program to hang for a second at speed-critical moments. |
1204 | * We'll leave it well alone... |
1205 | */ |
1206 | |
1207 | for (i=0; i<rows; i++) { |
1208 | int idx = i*(cols+1); |
1209 | start = -1; |
1210 | for (j=0; j<=cols; j++,idx++) { |
1211 | unsigned long t = wanttext[idx]; |
1212 | int needs_update = (j < cols && t != disptext[idx]); |
1213 | int keep_going = (start != -1 && needs_update && |
1214 | (t & ATTR_MASK) == attr && |
1215 | j-start < sizeof(ch)); |
1216 | if (start != -1 && !keep_going) { |
1217 | do_text (ctx, start, i, ch, j-start, attr); |
1218 | start = -1; |
1219 | } |
1220 | if (needs_update) { |
1221 | if (start == -1) { |
1222 | start = j; |
1223 | attr = t & ATTR_MASK; |
1224 | } |
1225 | ch[j-start] = (char) (t & CHAR_MASK); |
1226 | } |
1227 | disptext[idx] = t; |
1228 | } |
1229 | } |
1230 | } |
1231 | |
1232 | /* |
1233 | * Invalidate the whole screen so it will be repainted in full. |
1234 | */ |
1235 | void term_invalidate(void) { |
1236 | int i; |
1237 | |
1238 | for (i=0; i<rows*(cols+1); i++) |
1239 | disptext[i] = ATTR_INVALID; |
1240 | } |
1241 | |
1242 | /* |
1243 | * Paint the window in response to a WM_PAINT message. |
1244 | */ |
1245 | void term_paint (Context ctx, int l, int t, int r, int b) { |
1246 | int i, j, left, top, right, bottom; |
1247 | |
1248 | left = l / font_width; |
1249 | right = (r - 1) / font_width; |
1250 | top = t / font_height; |
1251 | bottom = (b - 1) / font_height; |
e42ad027 |
1252 | for (i = top; i <= bottom && i < rows ; i++) |
1253 | for (j = left; j <= right && j < cols ; j++) |
374330e2 |
1254 | disptext[i*(cols+1)+j] = ATTR_INVALID; |
1255 | |
1256 | do_paint (ctx, FALSE); |
1257 | } |
1258 | |
1259 | /* |
1260 | * Attempt to scroll the scrollback. The second parameter gives the |
1261 | * position we want to scroll to; the first is +1 to denote that |
1262 | * this position is relative to the beginning of the scrollback, -1 |
1263 | * to denote it is relative to the end, and 0 to denote that it is |
1264 | * relative to the current position. |
1265 | */ |
1266 | void term_scroll (int rel, int where) { |
1267 | int n = where * (cols+1); |
1268 | |
1269 | disptop = (rel < 0 ? scrtop : |
1270 | rel > 0 ? sbtop : disptop) + n; |
1271 | if (disptop < sbtop) |
1272 | disptop = sbtop; |
1273 | if (disptop > scrtop) |
1274 | disptop = scrtop; |
1275 | update_sbar(); |
1276 | term_update(); |
1277 | } |
1278 | |
1279 | /* |
1280 | * Spread the selection outwards according to the selection mode. |
1281 | */ |
1282 | static unsigned long *sel_spread_half (unsigned long *p, int dir) { |
1283 | unsigned long *linestart, *lineend; |
1284 | int x; |
1285 | short wvalue; |
1286 | |
1287 | x = (p - text) % (cols+1); |
1288 | linestart = p - x; |
1289 | lineend = linestart + cols; |
1290 | |
1291 | switch (selmode) { |
1292 | case SM_CHAR: |
1293 | /* |
1294 | * In this mode, every character is a separate unit, except |
1295 | * for runs of spaces at the end of a non-wrapping line. |
1296 | */ |
1297 | if (!(linestart[cols] & ATTR_WRAPPED)) { |
1298 | unsigned long *q = lineend; |
1299 | while (q > linestart && (q[-1] & CHAR_MASK) == 0x20) |
1300 | q--; |
1301 | if (q == lineend) |
1302 | q--; |
1303 | if (p >= q) |
1304 | p = (dir == -1 ? q : lineend - 1); |
1305 | } |
1306 | break; |
1307 | case SM_WORD: |
1308 | /* |
1309 | * In this mode, the units are maximal runs of characters |
1310 | * whose `wordness' has the same value. |
1311 | */ |
1312 | wvalue = wordness[*p & CHAR_MASK]; |
1313 | if (dir == +1) { |
1314 | while (p < lineend && wordness[p[1] & CHAR_MASK] == wvalue) |
1315 | p++; |
1316 | } else { |
1317 | while (p > linestart && wordness[p[-1] & CHAR_MASK] == wvalue) |
1318 | p--; |
1319 | } |
1320 | break; |
1321 | case SM_LINE: |
1322 | /* |
1323 | * In this mode, every line is a unit. |
1324 | */ |
1325 | p = (dir == -1 ? linestart : lineend - 1); |
1326 | break; |
1327 | } |
1328 | return p; |
1329 | } |
1330 | |
1331 | static void sel_spread (void) { |
1332 | selstart = sel_spread_half (selstart, -1); |
1333 | selend = sel_spread_half (selend - 1, +1) + 1; |
1334 | } |
1335 | |
1336 | void term_mouse (Mouse_Button b, Mouse_Action a, int x, int y) { |
37508af4 |
1337 | unsigned long *selpoint; |
1338 | |
1339 | if (y<0) y = 0; |
1340 | if (y>=rows) y = rows-1; |
094ed2a6 |
1341 | if (x<0) { |
1342 | if (y > 0) { |
1343 | x = cols-1; |
1344 | y--; |
1345 | } else |
1346 | x = 0; |
1347 | } |
37508af4 |
1348 | if (x>=cols) x = cols-1; |
1349 | |
1350 | selpoint = disptop + y * (cols+1) + x; |
374330e2 |
1351 | |
1352 | if (b == MB_SELECT && a == MA_CLICK) { |
1353 | deselect(); |
1354 | selstate = ABOUT_TO; |
1355 | selanchor = selpoint; |
1356 | selmode = SM_CHAR; |
1357 | } else if (b == MB_SELECT && (a == MA_2CLK || a == MA_3CLK)) { |
1358 | deselect(); |
1359 | selmode = (a == MA_2CLK ? SM_WORD : SM_LINE); |
1360 | selstate = DRAGGING; |
1361 | selstart = selanchor = selpoint; |
1362 | selend = selstart + 1; |
1363 | sel_spread(); |
1364 | } else if ((b == MB_SELECT && a == MA_DRAG) || |
1365 | (b == MB_EXTEND && a != MA_RELEASE)) { |
1366 | if (selstate == ABOUT_TO && selanchor == selpoint) |
1367 | return; |
1368 | if (b == MB_EXTEND && a != MA_DRAG && selstate == SELECTED) { |
1369 | if (selpoint-selstart < (selend-selstart)/2) |
1370 | selanchor = selend - 1; |
1371 | else |
1372 | selanchor = selstart; |
1373 | selstate = DRAGGING; |
1374 | } |
1375 | if (selstate != ABOUT_TO && selstate != DRAGGING) |
1376 | selanchor = selpoint; |
1377 | selstate = DRAGGING; |
1378 | if (selpoint < selanchor) { |
1379 | selstart = selpoint; |
1380 | selend = selanchor + 1; |
1381 | } else { |
1382 | selstart = selanchor; |
1383 | selend = selpoint + 1; |
1384 | } |
1385 | sel_spread(); |
1386 | } else if ((b == MB_SELECT || b == MB_EXTEND) && a == MA_RELEASE) { |
1387 | if (selstate == DRAGGING) { |
1388 | /* |
1389 | * We've completed a selection. We now transfer the |
1390 | * data to the clipboard. |
1391 | */ |
1392 | unsigned char *p = selspace; |
1393 | unsigned long *q = selstart; |
1394 | |
1395 | while (q < selend) { |
1396 | int nl = FALSE; |
1397 | unsigned long *lineend = q - (q-text) % (cols+1) + cols; |
1398 | unsigned long *nlpos = lineend; |
1399 | |
1400 | if (!(*nlpos & ATTR_WRAPPED)) { |
1401 | while ((nlpos[-1] & CHAR_MASK) == 0x20 && nlpos > q) |
1402 | nlpos--; |
1403 | if (nlpos < selend) |
1404 | nl = TRUE; |
1405 | } |
1406 | while (q < nlpos && q < selend) |
1407 | *p++ = (unsigned char) (*q++ & CHAR_MASK); |
1408 | if (nl) { |
1409 | int i; |
1410 | for (i=0; i<sizeof(sel_nl); i++) |
1411 | *p++ = sel_nl[i]; |
1412 | } |
1413 | q = lineend + 1; /* start of next line */ |
1414 | } |
1415 | write_clip (selspace, p - selspace); |
1416 | selstate = SELECTED; |
1417 | } else |
1418 | selstate = NO_SELECTION; |
1419 | } else if (b == MB_PASTE && (a==MA_CLICK || a==MA_2CLK || a==MA_3CLK)) { |
1420 | char *data; |
1421 | int len; |
1422 | |
1423 | get_clip((void **) &data, &len); |
1424 | if (data) { |
1425 | char *p, *q; |
1426 | p = q = data; |
1427 | while (p < data+len) { |
1428 | while (p < data+len && |
1429 | !(p <= data+len-sizeof(sel_nl) && |
1430 | !memcmp(p, sel_nl, sizeof(sel_nl)))) |
1431 | p++; |
14963b8f |
1432 | |
1433 | { |
1434 | int i; |
1435 | unsigned char c; |
1436 | for(i=0;i<p-q;i++) |
1437 | { |
1438 | c=xlat_kbd2tty(q[i]); |
5bc238bb |
1439 | ldisc->send(&c,1); |
14963b8f |
1440 | } |
1441 | } |
1442 | |
374330e2 |
1443 | if (p <= data+len-sizeof(sel_nl) && |
1444 | !memcmp(p, sel_nl, sizeof(sel_nl))) { |
5bc238bb |
1445 | ldisc->send ("\r", 1); |
374330e2 |
1446 | p += sizeof(sel_nl); |
1447 | } |
1448 | q = p; |
1449 | } |
1450 | } |
1451 | get_clip(NULL, NULL); |
1452 | } |
1453 | |
1454 | term_update(); |
1455 | } |
1456 | |
1457 | static void deselect (void) { |
1458 | selstate = NO_SELECTION; |
1459 | selstart = selend = scrtop; |
1460 | } |
1461 | |
1462 | void term_deselect (void) { |
1463 | deselect(); |
1464 | term_update(); |
1465 | } |