cabfd08c |
1 | ++ terminal.c.new Mon Nov 22 15:02:03 1999 |
374330e2 |
2 | #include <windows.h> |
3 | |
4 | #include <stdio.h> |
5 | #include <stdlib.h> |
6 | |
7 | #include "putty.h" |
8 | |
9 | static unsigned long *text; /* buffer of text on terminal screen */ |
10 | static unsigned long *scrtop; /* top of working screen */ |
11 | static unsigned long *disptop; /* top of displayed screen */ |
12 | static unsigned long *sbtop; /* top of scrollback */ |
13 | static unsigned long *cpos; /* cursor position (convenience) */ |
14 | static unsigned long *disptext; /* buffer of text on real screen */ |
15 | static unsigned long *wanttext; /* buffer of text we want on screen */ |
16 | static unsigned long *alttext; /* buffer of text on alt. screen */ |
17 | |
18 | static unsigned char *selspace; /* buffer for building selections in */ |
19 | |
20 | #define TSIZE (sizeof(*text)) |
21 | #define fix_cpos do { cpos = scrtop + curs_y * (cols+1) + curs_x; } while(0) |
22 | |
23 | static unsigned long curr_attr, save_attr; |
24 | |
25 | static int curs_x, curs_y; /* cursor */ |
26 | static int save_x, save_y; /* saved cursor position */ |
27 | static int marg_t, marg_b; /* scroll margins */ |
28 | static int dec_om; /* DEC origin mode flag */ |
29 | static int wrap, wrapnext; /* wrap flags */ |
30 | static int insert; /* insert-mode flag */ |
31 | static int cset; /* 0 or 1: which char set */ |
32 | static int save_cset, save_csattr; /* saved with cursor position */ |
33 | static int rvideo; /* global reverse video flag */ |
34 | |
35 | static unsigned long cset_attr[2]; |
36 | |
37 | /* |
38 | * Saved settings on the alternate screen. |
39 | */ |
40 | static int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins, alt_cset; |
41 | static int alt_t, alt_b; |
42 | static int alt_which; |
43 | |
44 | #define ARGS_MAX 32 /* max # of esc sequence arguments */ |
45 | #define ARG_DEFAULT -1 /* if an arg isn't specified */ |
46 | #define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) ) |
47 | static int esc_args[ARGS_MAX]; |
48 | static int esc_nargs; |
49 | static int esc_query; |
50 | |
51 | #define OSC_STR_MAX 2048 |
52 | static int osc_strlen; |
53 | static char osc_string[OSC_STR_MAX+1]; |
54 | static int osc_w; |
55 | |
56 | static unsigned char *tabs; |
57 | |
58 | #define MAXNL 5 |
59 | static int nl_count; |
60 | |
61 | static int scroll_heuristic; |
62 | |
63 | static enum { |
cabfd08c |
64 | TOPLEVEL, |
65 | SEEN_ESC, |
66 | SEEN_CSI, |
67 | SEEN_OSC, |
68 | SEEN_OSC_W, |
69 | |
70 | DO_CTRLS, |
71 | |
72 | IGNORE_NEXT, |
73 | SET_GL, SET_GR, |
74 | SEEN_OSC_P, |
75 | OSC_STRING, OSC_MAYBE_ST, |
374330e2 |
76 | SEEN_ESCHASH |
77 | } termstate; |
78 | |
79 | static enum { |
80 | NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED |
81 | } selstate; |
82 | static enum { |
83 | SM_CHAR, SM_WORD, SM_LINE |
84 | } selmode; |
85 | static unsigned long *selstart, *selend, *selanchor; |
86 | |
87 | static short wordness[256] = { |
88 | 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 */ |
89 | 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 */ |
90 | 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 */ |
91 | 1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1, /* 67 */ |
92 | 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 */ |
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, /* AB */ |
94 | 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 */ |
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, /* EF */ |
96 | }; |
97 | |
98 | static unsigned char sel_nl[] = SEL_NL; |
99 | |
100 | /* |
101 | * Internal prototypes. |
102 | */ |
103 | static void do_paint (Context, int); |
104 | static void erase_lots (int, int, int); |
105 | static void swap_screen (int); |
106 | static void update_sbar (void); |
107 | static void deselect (void); |
108 | |
109 | /* |
110 | * Set up power-on settings for the terminal. |
111 | */ |
112 | static void power_on(void) { |
113 | curs_x = curs_y = alt_x = alt_y = save_x = save_y = 0; |
114 | alt_t = marg_t = 0; |
115 | if (rows != -1) |
116 | alt_b = marg_b = rows - 1; |
117 | else |
118 | alt_b = marg_b = 0; |
119 | if (cols != -1) { |
120 | int i; |
121 | for (i = 0; i < cols; i++) |
122 | tabs[i] = (i % 8 == 0 ? TRUE : FALSE); |
123 | } |
124 | alt_om = dec_om = cfg.dec_om; |
125 | alt_wnext = wrapnext = alt_ins = insert = FALSE; |
126 | alt_wrap = wrap = cfg.wrap_mode; |
127 | alt_cset = cset = 0; |
128 | cset_attr[0] = cset_attr[1] = ATTR_ASCII; |
129 | rvideo = 0; |
130 | save_attr = curr_attr = ATTR_DEFAULT; |
131 | app_cursor_keys = cfg.app_cursor; |
132 | app_keypad_keys = cfg.app_keypad; |
133 | alt_which = 0; |
134 | { |
135 | int i; |
136 | for (i = 0; i < 256; i++) |
137 | wordness[i] = cfg.wordness[i]; |
138 | } |
139 | if (text) { |
140 | swap_screen (1); |
141 | erase_lots (FALSE, TRUE, TRUE); |
142 | swap_screen (0); |
143 | erase_lots (FALSE, TRUE, TRUE); |
144 | } |
145 | } |
146 | |
147 | /* |
148 | * Force a screen update. |
149 | */ |
150 | void term_update(void) { |
151 | Context ctx; |
152 | ctx = get_ctx(); |
153 | if (ctx) { |
cabfd08c |
154 | if ( (seen_key_event && (unscroll_event & US_KEY)) && |
155 | (seen_disp_event && (unscroll_event & US_DISP)) ) { |
156 | disptop = scrtop; |
157 | seen_disp_event = seen_key_event = 0; |
158 | } |
374330e2 |
159 | do_paint (ctx, TRUE); |
160 | free_ctx (ctx); |
161 | nl_count = 0; |
162 | scroll_heuristic = 0; |
163 | } |
164 | } |
165 | |
166 | /* |
167 | * Same as power_on(), but an external function. |
168 | */ |
169 | void term_pwron(void) { |
170 | power_on(); |
171 | fix_cpos; |
172 | disptop = scrtop; |
173 | deselect(); |
174 | term_update(); |
175 | } |
176 | |
177 | /* |
178 | * Clear the scrollback. |
179 | */ |
180 | void term_clrsb(void) { |
181 | disptop = sbtop = scrtop; |
182 | update_sbar(); |
183 | } |
184 | |
185 | /* |
186 | * Initialise the terminal. |
187 | */ |
188 | void term_init(void) { |
189 | text = sbtop = scrtop = disptop = cpos = NULL; |
190 | disptext = wanttext = NULL; |
191 | tabs = NULL; |
192 | selspace = NULL; |
193 | deselect(); |
194 | rows = cols = -1; |
195 | nl_count = 0; |
196 | power_on(); |
197 | } |
198 | |
199 | /* |
200 | * Set up the terminal for a given size. |
201 | */ |
202 | void term_size(int newrows, int newcols, int newsavelines) { |
203 | unsigned long *newtext, *newdisp, *newwant, *newalt; |
204 | int i, j, crows, ccols; |
205 | |
206 | if (newrows == rows && newcols == cols && newsavelines == savelines) |
207 | return; /* nothing to do */ |
208 | |
209 | alt_t = marg_t = 0; |
210 | alt_b = marg_b = newrows - 1; |
211 | |
212 | newtext = smalloc ((newrows+newsavelines)*(newcols+1)*TSIZE); |
213 | disptop = newtext + newsavelines*(newcols+1); |
214 | for (i=0; i<(newrows+newsavelines)*(newcols+1); i++) |
215 | newtext[i] = ERASE_CHAR; |
216 | if (rows != -1) { |
217 | crows = rows + (scrtop - sbtop) / (cols+1); |
218 | if (crows > newrows+newsavelines) |
219 | crows = newrows+newsavelines; |
220 | ccols = (cols < newcols ? cols : newcols); |
221 | for (i=0; i<crows; i++) { |
222 | int oldidx = (rows + savelines - crows + i) * (cols+1); |
223 | int newidx = (newrows + newsavelines - crows + i) * (newcols+1); |
224 | for (j=0; j<ccols; j++) |
225 | newtext[newidx+j] = text[oldidx+j]; |
226 | newtext[newidx+newcols] = |
227 | (cols == newcols ? text[oldidx+cols] : 0); |
228 | } |
229 | sbtop = disptop - (crows - newrows) * (newcols+1); |
230 | if (sbtop > disptop) |
231 | sbtop = disptop; |
232 | } else |
233 | sbtop = disptop; |
234 | scrtop = disptop; |
235 | sfree (text); |
236 | text = newtext; |
237 | |
238 | newdisp = smalloc (newrows*(newcols+1)*TSIZE); |
239 | for (i=0; i<newrows*(newcols+1); i++) |
240 | newdisp[i] = ATTR_INVALID; |
241 | sfree (disptext); |
242 | disptext = newdisp; |
243 | |
244 | newwant = smalloc (newrows*(newcols+1)*TSIZE); |
245 | for (i=0; i<newrows*(newcols+1); i++) |
246 | newwant[i] = ATTR_INVALID; |
247 | sfree (wanttext); |
248 | wanttext = newwant; |
249 | |
250 | newalt = smalloc (newrows*(newcols+1)*TSIZE); |
251 | for (i=0; i<newrows*(newcols+1); i++) |
252 | newalt[i] = ERASE_CHAR; |
253 | sfree (alttext); |
254 | alttext = newalt; |
255 | |
256 | sfree (selspace); |
257 | selspace = smalloc ( (newrows+newsavelines) * (newcols+sizeof(sel_nl)) ); |
258 | |
259 | tabs = srealloc (tabs, newcols*sizeof(*tabs)); |
260 | { |
261 | int i; |
262 | for (i = (cols > 0 ? cols : 0); i < newcols; i++) |
263 | tabs[i] = (i % 8 == 0 ? TRUE : FALSE); |
264 | } |
265 | |
266 | if (rows > 0) |
267 | curs_y += newrows - rows; |
268 | if (curs_y < 0) |
269 | curs_y = 0; |
270 | if (curs_y >= newrows) |
271 | curs_y = newrows-1; |
272 | if (curs_x >= newcols) |
273 | curs_x = newcols-1; |
274 | alt_x = alt_y = 0; |
275 | wrapnext = alt_wnext = FALSE; |
276 | |
277 | rows = newrows; |
278 | cols = newcols; |
279 | savelines = newsavelines; |
280 | fix_cpos; |
281 | |
282 | deselect(); |
283 | update_sbar(); |
284 | term_update(); |
285 | } |
286 | |
287 | /* |
288 | * Swap screens. |
289 | */ |
290 | static void swap_screen (int which) { |
291 | int t; |
292 | unsigned long tt; |
293 | |
294 | if (which == alt_which) |
295 | return; |
296 | |
297 | alt_which = which; |
298 | |
299 | for (t=0; t<rows*(cols+1); t++) { |
300 | tt = scrtop[t]; scrtop[t] = alttext[t]; alttext[t] = tt; |
301 | } |
302 | |
303 | t = curs_x; curs_x = alt_x; alt_x = t; |
304 | t = curs_y; curs_y = alt_y; alt_y = t; |
305 | t = marg_t; marg_t = alt_t; alt_t = t; |
306 | t = marg_b; marg_b = alt_b; alt_b = t; |
307 | t = dec_om; dec_om = alt_om; alt_om = t; |
308 | t = wrap; wrap = alt_wrap; alt_wrap = t; |
309 | t = wrapnext; wrapnext = alt_wnext; alt_wnext = t; |
310 | t = insert; insert = alt_ins; alt_ins = t; |
311 | t = cset; cset = alt_cset; alt_cset = t; |
312 | |
313 | fix_cpos; |
314 | } |
315 | |
316 | /* |
317 | * Retrieve a character from `inbuf'. |
318 | */ |
319 | static int inbuf_getc(void) { |
320 | if (inbuf_head == inbuf_reap) |
321 | return -1; /* EOF */ |
322 | else { |
323 | int n = inbuf_reap; |
324 | inbuf_reap = (inbuf_reap+1) & INBUF_MASK; |
325 | return inbuf[n]; |
326 | } |
327 | } |
328 | |
329 | /* |
330 | * Update the scroll bar. |
331 | */ |
332 | static void update_sbar(void) { |
333 | int min; |
334 | |
335 | min = (sbtop - text) / (cols+1); |
336 | set_sbar ((scrtop - text) / (cols+1) + rows - min, |
337 | (disptop - text) / (cols+1) - min, |
338 | rows); |
339 | } |
340 | |
341 | /* |
342 | * Check whether the region bounded by the two pointers intersects |
343 | * the scroll region, and de-select the on-screen selection if so. |
344 | */ |
345 | static void check_selection (unsigned long *from, unsigned long *to) { |
346 | if (from < selend && selstart < to) |
347 | deselect(); |
348 | } |
349 | |
350 | /* |
351 | * Scroll the screen. (`lines' is +ve for scrolling forward, -ve |
352 | * for backward.) `sb' is TRUE if the scrolling is permitted to |
353 | * affect the scrollback buffer. |
354 | */ |
355 | static void scroll (int topline, int botline, int lines, int sb) { |
356 | unsigned long *scroll_top; |
357 | int scroll_size, size, i; |
358 | |
359 | scroll_top = scrtop + topline*(cols+1); |
360 | size = (lines < 0 ? -lines : lines) * (cols+1); |
361 | scroll_size = (botline - topline + 1) * (cols+1) - size; |
362 | |
cabfd08c |
363 | if (lines > 0 && topline == 0 && alt_which == 0 && sb) { |
374330e2 |
364 | /* |
cabfd08c |
365 | * Since we're going to scroll the top line and we're on the |
366 | * scrolling screen let's also affect the scrollback buffer. |
374330e2 |
367 | */ |
368 | sbtop -= lines * (cols+1); |
369 | if (sbtop < text) |
370 | sbtop = text; |
371 | scroll_size += scroll_top - sbtop; |
372 | scroll_top = sbtop; |
373 | update_sbar(); |
374 | } |
375 | |
376 | if (scroll_size < 0) { |
377 | size += scroll_size; |
378 | scroll_size = 0; |
379 | } |
380 | |
381 | if (lines > 0) { |
382 | if (scroll_size) |
383 | memmove (scroll_top, scroll_top + size, scroll_size*TSIZE); |
384 | for (i = 0; i < size; i++) |
385 | scroll_top[i+scroll_size] = ERASE_CHAR; |
386 | if (selstart > scroll_top && |
387 | selstart < scroll_top + size + scroll_size) { |
388 | selstart -= size; |
389 | if (selstart < scroll_top) |
390 | selstart = scroll_top; |
391 | } |
392 | if (selend > scroll_top && |
393 | selend < scroll_top + size + scroll_size) { |
394 | selend -= size; |
395 | if (selend < scroll_top) |
396 | selend = scroll_top; |
397 | } |
398 | } else { |
399 | if (scroll_size) |
400 | memmove (scroll_top + size, scroll_top, scroll_size*TSIZE); |
401 | for (i = 0; i < size; i++) |
402 | scroll_top[i] = ERASE_CHAR; |
403 | if (selstart > scroll_top && |
404 | selstart < scroll_top + size + scroll_size) { |
405 | selstart += size; |
406 | if (selstart > scroll_top + size + scroll_size) |
407 | selstart = scroll_top + size + scroll_size; |
408 | } |
409 | if (selend > scroll_top && |
410 | selend < scroll_top + size + scroll_size) { |
411 | selend += size; |
412 | if (selend > scroll_top + size + scroll_size) |
413 | selend = scroll_top + size + scroll_size; |
414 | } |
415 | } |
416 | |
417 | scroll_heuristic += lines; |
418 | } |
419 | |
420 | /* |
421 | * Move the cursor to a given position, clipping at boundaries. We |
422 | * may or may not want to clip at the scroll margin: marg_clip is 0 |
423 | * not to, 1 to disallow _passing_ the margins, and 2 to disallow |
424 | * even _being_ outside the margins. |
425 | */ |
426 | static void move (int x, int y, int marg_clip) { |
427 | if (x < 0) |
428 | x = 0; |
429 | if (x >= cols) |
430 | x = cols-1; |
431 | if (marg_clip) { |
432 | if ((curs_y >= marg_t || marg_clip == 2) && y < marg_t) |
433 | y = marg_t; |
434 | if ((curs_y <= marg_b || marg_clip == 2) && y > marg_b) |
435 | y = marg_b; |
436 | } |
437 | if (y < 0) |
438 | y = 0; |
439 | if (y >= rows) |
440 | y = rows-1; |
441 | curs_x = x; |
442 | curs_y = y; |
443 | fix_cpos; |
444 | wrapnext = FALSE; |
445 | } |
446 | |
447 | /* |
448 | * Save or restore the cursor and SGR mode. |
449 | */ |
450 | static void save_cursor(int save) { |
451 | if (save) { |
452 | save_x = curs_x; |
453 | save_y = curs_y; |
454 | save_attr = curr_attr; |
455 | save_cset = cset; |
456 | save_csattr = cset_attr[cset]; |
457 | } else { |
458 | curs_x = save_x; |
459 | curs_y = save_y; |
460 | curr_attr = save_attr; |
461 | cset = save_cset; |
462 | cset_attr[cset] = save_csattr; |
463 | fix_cpos; |
464 | } |
465 | } |
466 | |
467 | /* |
468 | * Erase a large portion of the screen: the whole screen, or the |
469 | * whole line, or parts thereof. |
470 | */ |
471 | static void erase_lots (int line_only, int from_begin, int to_end) { |
472 | unsigned long *startpos, *endpos; |
473 | |
474 | if (line_only) { |
475 | startpos = cpos - curs_x; |
476 | endpos = startpos + cols+1; |
477 | } else { |
478 | startpos = scrtop; |
479 | endpos = startpos + rows * (cols+1); |
480 | } |
481 | if (!from_begin) |
482 | startpos = cpos; |
483 | if (!to_end) |
484 | endpos = cpos; |
485 | check_selection (startpos, endpos); |
486 | while (startpos < endpos) |
487 | *startpos++ = ERASE_CHAR; |
488 | } |
489 | |
490 | /* |
491 | * Insert or delete characters within the current line. n is +ve if |
492 | * insertion is desired, and -ve for deletion. |
493 | */ |
494 | static void insch (int n) { |
495 | int dir = (n < 0 ? -1 : +1); |
496 | int m; |
497 | |
498 | n = (n < 0 ? -n : n); |
499 | if (n > cols - curs_x) |
500 | n = cols - curs_x; |
501 | m = cols - curs_x - n; |
502 | check_selection (cpos, cpos+n); |
503 | if (dir < 0) { |
504 | memmove (cpos, cpos+n, m*TSIZE); |
505 | while (n--) |
506 | cpos[m++] = ERASE_CHAR; |
507 | } else { |
508 | memmove (cpos+n, cpos, m*TSIZE); |
509 | while (n--) |
510 | cpos[n] = ERASE_CHAR; |
511 | } |
512 | } |
513 | |
514 | /* |
515 | * Toggle terminal mode `mode' to state `state'. (`query' indicates |
516 | * whether the mode is a DEC private one or a normal one.) |
517 | */ |
518 | static void toggle_mode (int mode, int query, int state) { |
519 | if (query) switch (mode) { |
520 | case 1: /* application cursor keys */ |
521 | app_cursor_keys = state; |
522 | break; |
523 | case 3: /* 80/132 columns */ |
524 | deselect(); |
525 | request_resize (state ? 132 : 80, rows); |
526 | break; |
527 | case 5: /* reverse video */ |
528 | rvideo = state; |
cabfd08c |
529 | seen_disp_event = TRUE; |
374330e2 |
530 | break; |
531 | case 6: /* DEC origin mode */ |
532 | dec_om = state; |
533 | break; |
534 | case 7: /* auto wrap */ |
535 | wrap = state; |
536 | break; |
537 | case 47: /* alternate screen */ |
538 | deselect(); |
539 | swap_screen (state); |
540 | disptop = scrtop; |
541 | break; |
542 | } else switch (mode) { |
543 | case 4: /* set insert mode */ |
544 | insert = state; |
545 | break; |
546 | } |
547 | } |
548 | |
549 | /* |
550 | * Process an OSC sequence: set window title or icon name. |
551 | */ |
552 | static void do_osc(void) { |
553 | if (osc_w) { |
554 | while (osc_strlen--) |
555 | wordness[(unsigned char)osc_string[osc_strlen]] = esc_args[0]; |
556 | } else { |
557 | osc_string[osc_strlen] = '\0'; |
558 | switch (esc_args[0]) { |
559 | case 0: |
560 | case 1: |
561 | set_icon (osc_string); |
562 | if (esc_args[0] == 1) |
563 | break; |
564 | /* fall through: parameter 0 means set both */ |
565 | case 2: |
566 | case 21: |
567 | set_title (osc_string); |
568 | break; |
569 | } |
570 | } |
571 | } |
572 | |
573 | /* |
574 | * Remove everything currently in `inbuf' and stick it up on the |
575 | * in-memory display. There's a big state machine in here to |
576 | * process escape sequences... |
577 | */ |
578 | void term_out(void) { |
579 | int c; |
374330e2 |
580 | |
581 | while ( (c = inbuf_getc()) != -1) { |
582 | #ifdef LOG |
583 | { |
584 | static FILE *fp = NULL; |
585 | if (!fp) fp = fopen("putty.log", "wb"); |
586 | if (fp) fputc (c, fp); |
587 | } |
588 | #endif |
cabfd08c |
589 | if( termstate < DO_CTRLS && (c&0x60) == 0 ) { |
374330e2 |
590 | switch (c) { |
591 | case '\005': /* terminal type query */ |
cabfd08c |
592 | ldisc->send ("PuTTY\r", 6); |
374330e2 |
593 | break; |
594 | case '\007': |
595 | beep(); |
596 | disptop = scrtop; |
374330e2 |
597 | break; |
598 | case '\b': |
599 | if (curs_x == 0 && curs_y > 0) |
600 | curs_x = cols-1, curs_y--; |
601 | else if (wrapnext) |
602 | wrapnext = FALSE; |
603 | else |
604 | curs_x--; |
605 | fix_cpos; |
cabfd08c |
606 | seen_disp_event = TRUE; |
374330e2 |
607 | break; |
608 | case '\016': |
609 | cset = 1; |
610 | break; |
611 | case '\017': |
612 | cset = 0; |
613 | break; |
614 | case '\033': |
615 | termstate = SEEN_ESC; |
616 | break; |
617 | case 0233: |
618 | termstate = SEEN_CSI; |
619 | esc_nargs = 1; |
620 | esc_args[0] = ARG_DEFAULT; |
621 | esc_query = FALSE; |
622 | break; |
623 | case 0235: |
624 | termstate = SEEN_OSC; |
625 | esc_args[0] = 0; |
626 | break; |
627 | case '\r': |
628 | curs_x = 0; |
629 | wrapnext = FALSE; |
630 | fix_cpos; |
cabfd08c |
631 | seen_disp_event = TRUE; |
374330e2 |
632 | break; |
633 | case '\013': |
634 | case '\014': |
635 | case '\n': |
636 | if (curs_y == marg_b) |
637 | scroll (marg_t, marg_b, 1, TRUE); |
638 | else if (curs_y < rows-1) |
639 | curs_y++; |
cabfd08c |
640 | if (cfg.lfhascr) |
641 | curs_x = 0; |
374330e2 |
642 | fix_cpos; |
643 | wrapnext = FALSE; |
cabfd08c |
644 | seen_disp_event = 1; |
374330e2 |
645 | nl_count++; |
646 | break; |
647 | case '\t': |
648 | do { |
649 | curs_x++; |
650 | } while (curs_x < cols-1 && !tabs[curs_x]); |
651 | if (curs_x >= cols) |
652 | curs_x = cols-1; |
653 | { |
654 | unsigned long *old_cpos = cpos; |
655 | fix_cpos; |
656 | check_selection (old_cpos, cpos); |
657 | } |
cabfd08c |
658 | seen_disp_event = TRUE; |
374330e2 |
659 | break; |
cabfd08c |
660 | } |
661 | } |
662 | else switch (termstate) { |
663 | case TOPLEVEL: |
664 | if (c >= ' ' && c != 0234) { |
665 | if (wrapnext) { |
666 | cpos[1] = ATTR_WRAPPED; |
667 | if (curs_y == marg_b) |
668 | scroll (marg_t, marg_b, 1, TRUE); |
669 | else if (curs_y < rows-1) |
670 | curs_y++; |
671 | curs_x = 0; |
672 | fix_cpos; |
673 | wrapnext = FALSE; |
674 | nl_count++; |
675 | } |
676 | if (insert) |
677 | insch (1); |
678 | check_selection (cpos, cpos+1); |
679 | *cpos++ = xlat_tty2scr((unsigned char)c) | curr_attr | |
680 | (c <= 0x7F ? cset_attr[cset] : ATTR_ASCII); |
681 | curs_x++; |
682 | if (curs_x == cols) { |
683 | cpos--; |
684 | curs_x--; |
685 | wrapnext = wrap; |
374330e2 |
686 | } |
cabfd08c |
687 | seen_disp_event = 1; |
374330e2 |
688 | } |
689 | break; |
cabfd08c |
690 | |
374330e2 |
691 | case IGNORE_NEXT: |
692 | termstate = TOPLEVEL; |
693 | break; |
694 | case OSC_MAYBE_ST: |
695 | /* |
696 | * This state is virtually identical to SEEN_ESC, with the |
697 | * exception that we have an OSC sequence in the pipeline, |
698 | * and _if_ we see a backslash, we process it. |
699 | */ |
700 | if (c == '\\') { |
701 | do_osc(); |
702 | termstate = TOPLEVEL; |
703 | break; |
704 | } |
705 | /* else fall through */ |
706 | case SEEN_ESC: |
707 | termstate = TOPLEVEL; |
708 | switch (c) { |
374330e2 |
709 | case ' ': /* some weird sequence? */ |
710 | termstate = IGNORE_NEXT; |
711 | break; |
712 | case '[': /* enter CSI mode */ |
713 | termstate = SEEN_CSI; |
714 | esc_nargs = 1; |
715 | esc_args[0] = ARG_DEFAULT; |
716 | esc_query = FALSE; |
717 | break; |
718 | case ']': /* xterm escape sequences */ |
719 | termstate = SEEN_OSC; |
720 | esc_args[0] = 0; |
721 | break; |
722 | case '(': /* should set GL */ |
723 | termstate = SET_GL; |
724 | break; |
725 | case ')': /* should set GR */ |
726 | termstate = SET_GR; |
727 | break; |
728 | case '7': /* save cursor */ |
729 | save_cursor (TRUE); |
730 | break; |
731 | case '8': /* restore cursor */ |
732 | save_cursor (FALSE); |
cabfd08c |
733 | seen_disp_event = TRUE; |
374330e2 |
734 | break; |
735 | case '=': |
736 | app_keypad_keys = TRUE; |
737 | break; |
738 | case '>': |
739 | app_keypad_keys = FALSE; |
740 | break; |
741 | case 'D': /* exactly equivalent to LF */ |
742 | if (curs_y == marg_b) |
743 | scroll (marg_t, marg_b, 1, TRUE); |
744 | else if (curs_y < rows-1) |
745 | curs_y++; |
746 | fix_cpos; |
747 | wrapnext = FALSE; |
cabfd08c |
748 | seen_disp_event = TRUE; |
374330e2 |
749 | nl_count++; |
750 | break; |
751 | case 'E': /* exactly equivalent to CR-LF */ |
752 | curs_x = 0; |
753 | wrapnext = FALSE; |
754 | if (curs_y == marg_b) |
755 | scroll (marg_t, marg_b, 1, TRUE); |
756 | else if (curs_y < rows-1) |
757 | curs_y++; |
758 | fix_cpos; |
759 | wrapnext = FALSE; |
760 | nl_count++; |
cabfd08c |
761 | seen_disp_event = TRUE; |
374330e2 |
762 | break; |
763 | case 'M': /* reverse index - backwards LF */ |
764 | if (curs_y == marg_t) |
765 | scroll (marg_t, marg_b, -1, TRUE); |
766 | else if (curs_y > 0) |
767 | curs_y--; |
768 | fix_cpos; |
769 | wrapnext = FALSE; |
cabfd08c |
770 | seen_disp_event = TRUE; |
374330e2 |
771 | break; |
772 | case 'Z': /* terminal type query */ |
5bc238bb |
773 | ldisc->send ("\033[?6c", 5); |
374330e2 |
774 | break; |
775 | case 'c': /* restore power-on settings */ |
776 | power_on(); |
777 | fix_cpos; |
778 | disptop = scrtop; |
cabfd08c |
779 | seen_disp_event = TRUE; |
374330e2 |
780 | break; |
781 | case '#': /* ESC # 8 fills screen with Es :-) */ |
782 | termstate = SEEN_ESCHASH; |
783 | break; |
784 | case 'H': /* set a tab */ |
785 | tabs[curs_x] = TRUE; |
786 | break; |
787 | } |
788 | break; |
789 | case SEEN_CSI: |
790 | termstate = TOPLEVEL; /* default */ |
791 | switch (c) { |
374330e2 |
792 | case '0': case '1': case '2': case '3': case '4': |
793 | case '5': case '6': case '7': case '8': case '9': |
794 | if (esc_nargs <= ARGS_MAX) { |
795 | if (esc_args[esc_nargs-1] == ARG_DEFAULT) |
796 | esc_args[esc_nargs-1] = 0; |
797 | esc_args[esc_nargs-1] = |
798 | 10 * esc_args[esc_nargs-1] + c - '0'; |
799 | } |
800 | termstate = SEEN_CSI; |
801 | break; |
802 | case ';': |
803 | if (++esc_nargs <= ARGS_MAX) |
804 | esc_args[esc_nargs-1] = ARG_DEFAULT; |
805 | termstate = SEEN_CSI; |
806 | break; |
807 | case '?': |
808 | esc_query = TRUE; |
809 | termstate = SEEN_CSI; |
810 | break; |
811 | case 'A': /* move up N lines */ |
812 | move (curs_x, curs_y - def(esc_args[0], 1), 1); |
cabfd08c |
813 | seen_disp_event = TRUE; |
374330e2 |
814 | break; |
815 | case 'B': case 'e': /* move down N lines */ |
816 | move (curs_x, curs_y + def(esc_args[0], 1), 1); |
cabfd08c |
817 | seen_disp_event = TRUE; |
374330e2 |
818 | break; |
819 | case 'C': case 'a': /* move right N cols */ |
820 | move (curs_x + def(esc_args[0], 1), curs_y, 1); |
cabfd08c |
821 | seen_disp_event = TRUE; |
374330e2 |
822 | break; |
823 | case 'D': /* move left N cols */ |
824 | move (curs_x - def(esc_args[0], 1), curs_y, 1); |
cabfd08c |
825 | seen_disp_event = TRUE; |
374330e2 |
826 | break; |
827 | case 'E': /* move down N lines and CR */ |
828 | move (0, curs_y + def(esc_args[0], 1), 1); |
cabfd08c |
829 | seen_disp_event = TRUE; |
374330e2 |
830 | break; |
831 | case 'F': /* move up N lines and CR */ |
832 | move (0, curs_y - def(esc_args[0], 1), 1); |
cabfd08c |
833 | seen_disp_event = TRUE; |
374330e2 |
834 | break; |
835 | case 'G': case '`': /* set horizontal posn */ |
836 | move (def(esc_args[0], 1) - 1, curs_y, 0); |
cabfd08c |
837 | seen_disp_event = TRUE; |
374330e2 |
838 | break; |
839 | case 'd': /* set vertical posn */ |
840 | move (curs_x, (dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1, |
841 | (dec_om ? 2 : 0)); |
cabfd08c |
842 | seen_disp_event = TRUE; |
374330e2 |
843 | break; |
844 | case 'H': case 'f': /* set horz and vert posns at once */ |
845 | if (esc_nargs < 2) |
846 | esc_args[1] = ARG_DEFAULT; |
847 | move (def(esc_args[1], 1) - 1, |
848 | (dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1, |
849 | (dec_om ? 2 : 0)); |
cabfd08c |
850 | seen_disp_event = TRUE; |
374330e2 |
851 | break; |
852 | case 'J': /* erase screen or parts of it */ |
853 | { |
854 | unsigned int i = def(esc_args[0], 0) + 1; |
855 | if (i > 3) |
856 | i = 0; |
857 | erase_lots(FALSE, !!(i & 2), !!(i & 1)); |
858 | } |
859 | disptop = scrtop; |
cabfd08c |
860 | seen_disp_event = TRUE; |
374330e2 |
861 | break; |
862 | case 'K': /* erase line or parts of it */ |
863 | { |
864 | unsigned int i = def(esc_args[0], 0) + 1; |
865 | if (i > 3) |
866 | i = 0; |
867 | erase_lots(TRUE, !!(i & 2), !!(i & 1)); |
868 | } |
cabfd08c |
869 | seen_disp_event = TRUE; |
374330e2 |
870 | break; |
871 | case 'L': /* insert lines */ |
872 | if (curs_y <= marg_b) |
873 | scroll (curs_y, marg_b, -def(esc_args[0], 1), FALSE); |
cabfd08c |
874 | seen_disp_event = TRUE; |
374330e2 |
875 | break; |
876 | case 'M': /* delete lines */ |
877 | if (curs_y <= marg_b) |
cabfd08c |
878 | scroll (curs_y, marg_b, def(esc_args[0], 1), TRUE); |
879 | seen_disp_event = TRUE; |
374330e2 |
880 | break; |
881 | case '@': /* insert chars */ |
882 | insch (def(esc_args[0], 1)); |
cabfd08c |
883 | seen_disp_event = TRUE; |
374330e2 |
884 | break; |
885 | case 'P': /* delete chars */ |
886 | insch (-def(esc_args[0], 1)); |
cabfd08c |
887 | seen_disp_event = TRUE; |
374330e2 |
888 | break; |
889 | case 'c': /* terminal type query */ |
5bc238bb |
890 | ldisc->send ("\033[?6c", 5); |
374330e2 |
891 | break; |
892 | case 'n': /* cursor position query */ |
893 | if (esc_args[0] == 6) { |
894 | char buf[32]; |
895 | sprintf (buf, "\033[%d;%dR", curs_y + 1, curs_x + 1); |
5bc238bb |
896 | ldisc->send (buf, strlen(buf)); |
374330e2 |
897 | } |
898 | break; |
899 | case 'h': /* toggle a mode to high */ |
900 | toggle_mode (esc_args[0], esc_query, TRUE); |
901 | break; |
902 | case 'l': /* toggle a mode to low */ |
903 | toggle_mode (esc_args[0], esc_query, FALSE); |
904 | break; |
905 | case 'g': /* clear tabs */ |
906 | if (esc_nargs == 1) { |
907 | if (esc_args[0] == 0) { |
908 | tabs[curs_x] = FALSE; |
909 | } else if (esc_args[0] == 3) { |
910 | int i; |
911 | for (i = 0; i < cols; i++) |
912 | tabs[i] = FALSE; |
913 | } |
914 | } |
915 | break; |
916 | case 'r': /* set scroll margins */ |
c723efc7 |
917 | if (!esc_query && esc_nargs <= 2) { |
374330e2 |
918 | int top, bot; |
919 | top = def(esc_args[0], 1) - 1; |
920 | if (top < 0) |
921 | top = 0; |
373e84fb |
922 | bot = (esc_nargs <= 1 || esc_args[1] == 0 ? rows : |
374330e2 |
923 | def(esc_args[1], rows)) - 1; |
924 | if (bot >= rows) |
925 | bot = rows-1; |
926 | if (top <= bot) { |
927 | marg_t = top; |
928 | marg_b = bot; |
929 | curs_x = 0; |
930 | /* |
931 | * I used to think the cursor should be |
932 | * placed at the top of the newly marginned |
933 | * area. Apparently not: VMS TPU falls over |
934 | * if so. |
935 | */ |
936 | curs_y = 0; |
937 | fix_cpos; |
cabfd08c |
938 | seen_disp_event = TRUE; |
374330e2 |
939 | } |
940 | } |
941 | break; |
942 | case 'm': /* set graphics rendition */ |
943 | { |
944 | int i; |
945 | for (i=0; i<esc_nargs; i++) { |
946 | switch (def(esc_args[i], 0)) { |
947 | case 0: /* restore defaults */ |
948 | curr_attr = ATTR_DEFAULT; break; |
949 | case 1: /* enable bold */ |
950 | curr_attr |= ATTR_BOLD; break; |
951 | case 4: /* enable underline */ |
952 | case 21: /* (enable double underline) */ |
953 | curr_attr |= ATTR_UNDER; break; |
954 | case 7: /* enable reverse video */ |
955 | curr_attr |= ATTR_REVERSE; break; |
956 | case 22: /* disable bold */ |
957 | curr_attr &= ~ATTR_BOLD; break; |
958 | case 24: /* disable underline */ |
959 | curr_attr &= ~ATTR_UNDER; break; |
960 | case 27: /* disable reverse video */ |
961 | curr_attr &= ~ATTR_REVERSE; break; |
962 | case 30: case 31: case 32: case 33: |
963 | case 34: case 35: case 36: case 37: |
964 | /* foreground */ |
965 | curr_attr &= ~ATTR_FGMASK; |
966 | curr_attr |= (esc_args[i] - 30) << ATTR_FGSHIFT; |
967 | break; |
968 | case 39: /* default-foreground */ |
969 | curr_attr &= ~ATTR_FGMASK; |
970 | curr_attr |= ATTR_DEFFG; |
971 | break; |
972 | case 40: case 41: case 42: case 43: |
973 | case 44: case 45: case 46: case 47: |
974 | /* background */ |
975 | curr_attr &= ~ATTR_BGMASK; |
976 | curr_attr |= (esc_args[i] - 40) << ATTR_BGSHIFT; |
977 | break; |
978 | case 49: /* default-background */ |
979 | curr_attr &= ~ATTR_BGMASK; |
980 | curr_attr |= ATTR_DEFBG; |
981 | break; |
982 | } |
983 | } |
984 | } |
985 | break; |
986 | case 's': /* save cursor */ |
987 | save_cursor (TRUE); |
988 | break; |
989 | case 'u': /* restore cursor */ |
990 | save_cursor (FALSE); |
cabfd08c |
991 | seen_disp_event = TRUE; |
374330e2 |
992 | break; |
993 | case 't': /* set page size - ie window height */ |
994 | request_resize (cols, def(esc_args[0], 24)); |
995 | deselect(); |
996 | break; |
997 | case 'X': /* write N spaces w/o moving cursor */ |
998 | { |
999 | int n = def(esc_args[0], 1); |
1000 | unsigned long *p = cpos; |
1001 | if (n > cols - curs_x) |
1002 | n = cols - curs_x; |
1003 | check_selection (cpos, cpos+n); |
1004 | while (n--) |
1005 | *p++ = ERASE_CHAR; |
cabfd08c |
1006 | seen_disp_event = TRUE; |
374330e2 |
1007 | } |
1008 | break; |
1009 | case 'x': /* report terminal characteristics */ |
1010 | { |
1011 | char buf[32]; |
1012 | int i = def(esc_args[0], 0); |
1013 | if (i == 0 || i == 1) { |
1014 | strcpy (buf, "\033[2;1;1;112;112;1;0x"); |
1015 | buf[2] += i; |
5bc238bb |
1016 | ldisc->send (buf, 20); |
374330e2 |
1017 | } |
1018 | } |
1019 | break; |
1020 | } |
1021 | break; |
1022 | case SET_GL: |
1023 | case SET_GR: |
1024 | switch (c) { |
1025 | case 'A': |
1026 | cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_GBCHR; |
1027 | break; |
1028 | case '0': |
1029 | cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_LINEDRW; |
1030 | break; |
1031 | default: /* specifically, 'B' */ |
1032 | cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_ASCII; |
1033 | break; |
1034 | } |
1035 | termstate = TOPLEVEL; |
1036 | break; |
1037 | case SEEN_OSC: |
1038 | osc_w = FALSE; |
1039 | switch (c) { |
374330e2 |
1040 | case 'P': /* Linux palette sequence */ |
1041 | termstate = SEEN_OSC_P; |
1042 | osc_strlen = 0; |
1043 | break; |
1044 | case 'R': /* Linux palette reset */ |
1045 | palette_reset(); |
1046 | term_invalidate(); |
1047 | termstate = TOPLEVEL; |
1048 | break; |
1049 | case 'W': /* word-set */ |
1050 | termstate = SEEN_OSC_W; |
1051 | osc_w = TRUE; |
1052 | break; |
1053 | case '0': case '1': case '2': case '3': case '4': |
1054 | case '5': case '6': case '7': case '8': case '9': |
1055 | esc_args[0] = 10 * esc_args[0] + c - '0'; |
1056 | break; |
1057 | case 'L': |
1058 | /* |
1059 | * Grotty hack to support xterm and DECterm title |
1060 | * sequences concurrently. |
1061 | */ |
1062 | if (esc_args[0] == 2) { |
1063 | esc_args[0] = 1; |
1064 | break; |
1065 | } |
1066 | /* else fall through */ |
1067 | default: |
1068 | termstate = OSC_STRING; |
1069 | osc_strlen = 0; |
1070 | } |
1071 | break; |
1072 | case OSC_STRING: |
1073 | if (c == 0234 || c == '\007') { |
1074 | /* |
1075 | * These characters terminate the string; ST and BEL |
1076 | * terminate the sequence and trigger instant |
1077 | * processing of it, whereas ESC goes back to SEEN_ESC |
1078 | * mode unless it is followed by \, in which case it is |
1079 | * synonymous with ST in the first place. |
1080 | */ |
1081 | do_osc(); |
1082 | termstate = TOPLEVEL; |
1083 | } else if (c == '\033') |
1084 | termstate = OSC_MAYBE_ST; |
1085 | else if (osc_strlen < OSC_STR_MAX) |
1086 | osc_string[osc_strlen++] = c; |
1087 | break; |
1088 | case SEEN_OSC_P: |
1089 | { |
1090 | int max = (osc_strlen == 0 ? 21 : 16); |
1091 | int val; |
1092 | if (c >= '0' && c <= '9') |
1093 | val = c - '0'; |
1094 | else if (c >= 'A' && c <= 'A'+max-10) |
1095 | val = c - 'A' + 10; |
1096 | else if (c >= 'a' && c <= 'a'+max-10) |
1097 | val = c - 'a' + 10; |
1098 | else |
1099 | termstate = TOPLEVEL; |
1100 | osc_string[osc_strlen++] = val; |
1101 | if (osc_strlen >= 7) { |
1102 | palette_set (osc_string[0], |
1103 | osc_string[1] * 16 + osc_string[2], |
1104 | osc_string[3] * 16 + osc_string[4], |
1105 | osc_string[5] * 16 + osc_string[6]); |
1106 | term_invalidate(); |
1107 | termstate = TOPLEVEL; |
1108 | } |
1109 | } |
1110 | break; |
1111 | case SEEN_OSC_W: |
1112 | switch (c) { |
374330e2 |
1113 | case '0': case '1': case '2': case '3': case '4': |
1114 | case '5': case '6': case '7': case '8': case '9': |
1115 | esc_args[0] = 10 * esc_args[0] + c - '0'; |
1116 | break; |
1117 | default: |
1118 | termstate = OSC_STRING; |
1119 | osc_strlen = 0; |
1120 | } |
1121 | break; |
1122 | case SEEN_ESCHASH: |
1123 | if (c == '8') { |
1124 | unsigned long *p = scrtop; |
1125 | int n = rows * (cols+1); |
1126 | while (n--) |
1127 | *p++ = ATTR_DEFAULT | 'E'; |
1128 | disptop = scrtop; |
cabfd08c |
1129 | seen_disp_event = TRUE; |
374330e2 |
1130 | check_selection (scrtop, scrtop + rows * (cols+1)); |
1131 | } |
1132 | termstate = TOPLEVEL; |
1133 | break; |
1134 | } |
1135 | check_selection (cpos, cpos+1); |
1136 | } |
1137 | |
cabfd08c |
1138 | if (nl_count > MAXNL) |
374330e2 |
1139 | term_update(); |
1140 | } |
1141 | |
1142 | /* |
1143 | * Compare two lines to determine whether they are sufficiently |
1144 | * alike to scroll-optimise one to the other. Return the degree of |
1145 | * similarity. |
1146 | */ |
1147 | static int linecmp (unsigned long *a, unsigned long *b) { |
1148 | int i, n; |
1149 | |
1150 | for (i=n=0; i < cols; i++) |
1151 | n += (*a++ == *b++); |
1152 | return n; |
1153 | } |
1154 | |
1155 | /* |
1156 | * Given a context, update the window. Out of paranoia, we don't |
1157 | * allow WM_PAINT responses to do scrolling optimisations. |
1158 | */ |
1159 | static void do_paint (Context ctx, int may_optimise){ |
1160 | int i, j, start, our_curs_y; |
1161 | unsigned long attr, rv, cursor; |
1162 | char ch[1024]; |
1163 | |
1164 | cursor = (has_focus ? ATTR_ACTCURS : ATTR_PASCURS); |
1165 | rv = (rvideo ? ATTR_REVERSE : 0); |
1166 | our_curs_y = curs_y + (scrtop - disptop) / (cols+1); |
1167 | |
1168 | for (i=0; i<rows; i++) { |
1169 | int idx = i*(cols+1); |
1170 | for (j=0; j<=cols; j++,idx++) { |
1171 | unsigned long *d = disptop+idx; |
1172 | wanttext[idx] = ((*d ^ rv |
1173 | ^ (selstart <= d && d < selend ? |
1174 | ATTR_REVERSE : 0)) | |
1175 | (i==our_curs_y && j==curs_x ? cursor : 0)); |
1176 | } |
1177 | } |
1178 | |
1179 | /* |
1180 | * We would perform scrolling optimisations in here, if they |
1181 | * didn't have a nasty tendency to cause the whole sodding |
1182 | * program to hang for a second at speed-critical moments. |
1183 | * We'll leave it well alone... |
1184 | */ |
1185 | |
1186 | for (i=0; i<rows; i++) { |
1187 | int idx = i*(cols+1); |
1188 | start = -1; |
1189 | for (j=0; j<=cols; j++,idx++) { |
1190 | unsigned long t = wanttext[idx]; |
1191 | int needs_update = (j < cols && t != disptext[idx]); |
1192 | int keep_going = (start != -1 && needs_update && |
1193 | (t & ATTR_MASK) == attr && |
1194 | j-start < sizeof(ch)); |
1195 | if (start != -1 && !keep_going) { |
1196 | do_text (ctx, start, i, ch, j-start, attr); |
1197 | start = -1; |
1198 | } |
1199 | if (needs_update) { |
1200 | if (start == -1) { |
1201 | start = j; |
1202 | attr = t & ATTR_MASK; |
1203 | } |
1204 | ch[j-start] = (char) (t & CHAR_MASK); |
1205 | } |
1206 | disptext[idx] = t; |
1207 | } |
1208 | } |
1209 | } |
1210 | |
1211 | /* |
1212 | * Invalidate the whole screen so it will be repainted in full. |
1213 | */ |
1214 | void term_invalidate(void) { |
1215 | int i; |
1216 | |
1217 | for (i=0; i<rows*(cols+1); i++) |
1218 | disptext[i] = ATTR_INVALID; |
1219 | } |
1220 | |
1221 | /* |
1222 | * Paint the window in response to a WM_PAINT message. |
1223 | */ |
1224 | void term_paint (Context ctx, int l, int t, int r, int b) { |
1225 | int i, j, left, top, right, bottom; |
1226 | |
1227 | left = l / font_width; |
1228 | right = (r - 1) / font_width; |
1229 | top = t / font_height; |
1230 | bottom = (b - 1) / font_height; |
e42ad027 |
1231 | for (i = top; i <= bottom && i < rows ; i++) |
1232 | for (j = left; j <= right && j < cols ; j++) |
374330e2 |
1233 | disptext[i*(cols+1)+j] = ATTR_INVALID; |
1234 | |
1235 | do_paint (ctx, FALSE); |
1236 | } |
1237 | |
1238 | /* |
1239 | * Attempt to scroll the scrollback. The second parameter gives the |
1240 | * position we want to scroll to; the first is +1 to denote that |
1241 | * this position is relative to the beginning of the scrollback, -1 |
1242 | * to denote it is relative to the end, and 0 to denote that it is |
1243 | * relative to the current position. |
1244 | */ |
1245 | void term_scroll (int rel, int where) { |
1246 | int n = where * (cols+1); |
1247 | |
1248 | disptop = (rel < 0 ? scrtop : |
1249 | rel > 0 ? sbtop : disptop) + n; |
1250 | if (disptop < sbtop) |
1251 | disptop = sbtop; |
1252 | if (disptop > scrtop) |
1253 | disptop = scrtop; |
1254 | update_sbar(); |
1255 | term_update(); |
1256 | } |
1257 | |
1258 | /* |
1259 | * Spread the selection outwards according to the selection mode. |
1260 | */ |
1261 | static unsigned long *sel_spread_half (unsigned long *p, int dir) { |
1262 | unsigned long *linestart, *lineend; |
1263 | int x; |
1264 | short wvalue; |
1265 | |
1266 | x = (p - text) % (cols+1); |
1267 | linestart = p - x; |
1268 | lineend = linestart + cols; |
1269 | |
1270 | switch (selmode) { |
1271 | case SM_CHAR: |
1272 | /* |
1273 | * In this mode, every character is a separate unit, except |
1274 | * for runs of spaces at the end of a non-wrapping line. |
1275 | */ |
1276 | if (!(linestart[cols] & ATTR_WRAPPED)) { |
1277 | unsigned long *q = lineend; |
1278 | while (q > linestart && (q[-1] & CHAR_MASK) == 0x20) |
1279 | q--; |
1280 | if (q == lineend) |
1281 | q--; |
1282 | if (p >= q) |
1283 | p = (dir == -1 ? q : lineend - 1); |
1284 | } |
1285 | break; |
1286 | case SM_WORD: |
1287 | /* |
1288 | * In this mode, the units are maximal runs of characters |
1289 | * whose `wordness' has the same value. |
1290 | */ |
1291 | wvalue = wordness[*p & CHAR_MASK]; |
1292 | if (dir == +1) { |
1293 | while (p < lineend && wordness[p[1] & CHAR_MASK] == wvalue) |
1294 | p++; |
1295 | } else { |
1296 | while (p > linestart && wordness[p[-1] & CHAR_MASK] == wvalue) |
1297 | p--; |
1298 | } |
1299 | break; |
1300 | case SM_LINE: |
1301 | /* |
1302 | * In this mode, every line is a unit. |
1303 | */ |
1304 | p = (dir == -1 ? linestart : lineend - 1); |
1305 | break; |
1306 | } |
1307 | return p; |
1308 | } |
1309 | |
1310 | static void sel_spread (void) { |
1311 | selstart = sel_spread_half (selstart, -1); |
1312 | selend = sel_spread_half (selend - 1, +1) + 1; |
1313 | } |
1314 | |
1315 | void term_mouse (Mouse_Button b, Mouse_Action a, int x, int y) { |
37508af4 |
1316 | unsigned long *selpoint; |
1317 | |
1318 | if (y<0) y = 0; |
1319 | if (y>=rows) y = rows-1; |
094ed2a6 |
1320 | if (x<0) { |
1321 | if (y > 0) { |
1322 | x = cols-1; |
1323 | y--; |
1324 | } else |
1325 | x = 0; |
1326 | } |
37508af4 |
1327 | if (x>=cols) x = cols-1; |
1328 | |
1329 | selpoint = disptop + y * (cols+1) + x; |
374330e2 |
1330 | |
1331 | if (b == MB_SELECT && a == MA_CLICK) { |
1332 | deselect(); |
1333 | selstate = ABOUT_TO; |
1334 | selanchor = selpoint; |
1335 | selmode = SM_CHAR; |
1336 | } else if (b == MB_SELECT && (a == MA_2CLK || a == MA_3CLK)) { |
1337 | deselect(); |
1338 | selmode = (a == MA_2CLK ? SM_WORD : SM_LINE); |
1339 | selstate = DRAGGING; |
1340 | selstart = selanchor = selpoint; |
1341 | selend = selstart + 1; |
1342 | sel_spread(); |
1343 | } else if ((b == MB_SELECT && a == MA_DRAG) || |
1344 | (b == MB_EXTEND && a != MA_RELEASE)) { |
1345 | if (selstate == ABOUT_TO && selanchor == selpoint) |
1346 | return; |
1347 | if (b == MB_EXTEND && a != MA_DRAG && selstate == SELECTED) { |
1348 | if (selpoint-selstart < (selend-selstart)/2) |
1349 | selanchor = selend - 1; |
1350 | else |
1351 | selanchor = selstart; |
1352 | selstate = DRAGGING; |
1353 | } |
1354 | if (selstate != ABOUT_TO && selstate != DRAGGING) |
1355 | selanchor = selpoint; |
1356 | selstate = DRAGGING; |
1357 | if (selpoint < selanchor) { |
1358 | selstart = selpoint; |
1359 | selend = selanchor + 1; |
1360 | } else { |
1361 | selstart = selanchor; |
1362 | selend = selpoint + 1; |
1363 | } |
1364 | sel_spread(); |
1365 | } else if ((b == MB_SELECT || b == MB_EXTEND) && a == MA_RELEASE) { |
1366 | if (selstate == DRAGGING) { |
1367 | /* |
1368 | * We've completed a selection. We now transfer the |
1369 | * data to the clipboard. |
1370 | */ |
1371 | unsigned char *p = selspace; |
1372 | unsigned long *q = selstart; |
1373 | |
1374 | while (q < selend) { |
1375 | int nl = FALSE; |
1376 | unsigned long *lineend = q - (q-text) % (cols+1) + cols; |
1377 | unsigned long *nlpos = lineend; |
1378 | |
1379 | if (!(*nlpos & ATTR_WRAPPED)) { |
1380 | while ((nlpos[-1] & CHAR_MASK) == 0x20 && nlpos > q) |
1381 | nlpos--; |
1382 | if (nlpos < selend) |
1383 | nl = TRUE; |
1384 | } |
1385 | while (q < nlpos && q < selend) |
1386 | *p++ = (unsigned char) (*q++ & CHAR_MASK); |
1387 | if (nl) { |
1388 | int i; |
1389 | for (i=0; i<sizeof(sel_nl); i++) |
1390 | *p++ = sel_nl[i]; |
1391 | } |
1392 | q = lineend + 1; /* start of next line */ |
1393 | } |
1394 | write_clip (selspace, p - selspace); |
1395 | selstate = SELECTED; |
1396 | } else |
1397 | selstate = NO_SELECTION; |
1398 | } else if (b == MB_PASTE && (a==MA_CLICK || a==MA_2CLK || a==MA_3CLK)) { |
1399 | char *data; |
1400 | int len; |
1401 | |
1402 | get_clip((void **) &data, &len); |
1403 | if (data) { |
1404 | char *p, *q; |
1405 | p = q = data; |
1406 | while (p < data+len) { |
1407 | while (p < data+len && |
1408 | !(p <= data+len-sizeof(sel_nl) && |
1409 | !memcmp(p, sel_nl, sizeof(sel_nl)))) |
1410 | p++; |
14963b8f |
1411 | |
1412 | { |
1413 | int i; |
1414 | unsigned char c; |
1415 | for(i=0;i<p-q;i++) |
1416 | { |
1417 | c=xlat_kbd2tty(q[i]); |
5bc238bb |
1418 | ldisc->send(&c,1); |
14963b8f |
1419 | } |
1420 | } |
1421 | |
374330e2 |
1422 | if (p <= data+len-sizeof(sel_nl) && |
1423 | !memcmp(p, sel_nl, sizeof(sel_nl))) { |
5bc238bb |
1424 | ldisc->send ("\r", 1); |
374330e2 |
1425 | p += sizeof(sel_nl); |
1426 | } |
1427 | q = p; |
1428 | } |
1429 | } |
1430 | get_clip(NULL, NULL); |
1431 | } |
1432 | |
1433 | term_update(); |
1434 | } |
1435 | |
1436 | static void deselect (void) { |
1437 | selstate = NO_SELECTION; |
1438 | selstart = selend = scrtop; |
1439 | } |
1440 | |
1441 | void term_deselect (void) { |
1442 | deselect(); |
1443 | term_update(); |
1444 | } |