Commit | Line | Data |
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c6a6499f | 1 | /* MS-DOS specific C utilities. -*- coding: raw-text -*- |
68c45bf0 | 2 | Copyright (C) 1993, 94, 95, 96, 97, 1999 Free Software Foundation, Inc. |
1b94449f RS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
edfc0d45 | 8 | the Free Software Foundation; either version 2, or (at your option) |
1b94449f RS |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
1b94449f | 20 | |
9da6e765 | 21 | /* Contributed by Morten Welinder */ |
f32d4091 | 22 | /* New display, keyboard, and mouse control by Kim F. Storm */ |
9da6e765 | 23 | |
1b94449f RS |
24 | /* Note: some of the stuff here was taken from end of sysdep.c in demacs. */ |
25 | ||
48984716 | 26 | #include <config.h> |
1b94449f RS |
27 | |
28 | #ifdef MSDOS | |
29 | #include "lisp.h" | |
30 | #include <stdio.h> | |
31 | #include <stdlib.h> | |
06b1ea13 | 32 | #include <time.h> |
1b94449f RS |
33 | #include <sys/param.h> |
34 | #include <sys/time.h> | |
35 | #include <dos.h> | |
d21e67b5 | 36 | #include <errno.h> |
a7cf9151 | 37 | #include <string.h> /* for bzero and string functions */ |
d21e67b5 | 38 | #include <sys/stat.h> /* for _fixpath */ |
a7cf9151 | 39 | #include <unistd.h> /* for chdir, dup, dup2, etc. */ |
1bd7b2c7 RS |
40 | #if __DJGPP__ >= 2 |
41 | #include <fcntl.h> | |
a7cf9151 | 42 | #include <io.h> /* for setmode */ |
fc171623 KH |
43 | #include <dpmi.h> /* for __dpmi_xxx stuff */ |
44 | #include <sys/farptr.h> /* for _farsetsel, _farnspokeb */ | |
d21e67b5 | 45 | #include <libc/dosio.h> /* for _USE_LFN */ |
a7cf9151 | 46 | #include <conio.h> /* for cputs */ |
1bd7b2c7 RS |
47 | #endif |
48 | ||
1b94449f RS |
49 | #include "msdos.h" |
50 | #include "systime.h" | |
51 | #include "termhooks.h" | |
aa9ce936 | 52 | #include "termchar.h" |
87485d6f | 53 | #include "dispextern.h" |
c77f6f1b | 54 | #include "dosfns.h" |
87485d6f | 55 | #include "termopts.h" |
aa9ce936 EZ |
56 | #include "charset.h" |
57 | #include "coding.h" | |
58 | #include "disptab.h" | |
1b94449f | 59 | #include "frame.h" |
87485d6f | 60 | #include "window.h" |
fc171623 KH |
61 | #include "buffer.h" |
62 | #include "commands.h" | |
41ad069b | 63 | #include "blockinput.h" |
97dd288b | 64 | #include "keyboard.h" |
1b94449f RS |
65 | #include <go32.h> |
66 | #include <pc.h> | |
67 | #include <ctype.h> | |
68 | /* #include <process.h> */ | |
69 | /* Damn that local process.h! Instead we can define P_WAIT ourselves. */ | |
70 | #define P_WAIT 1 | |
71 | ||
d21e67b5 RS |
72 | #ifndef _USE_LFN |
73 | #define _USE_LFN 0 | |
74 | #endif | |
75 | ||
b36701cc RS |
76 | #ifndef _dos_ds |
77 | #define _dos_ds _go32_info_block.selector_for_linear_memory | |
78 | #endif | |
79 | ||
1bd7b2c7 RS |
80 | #if __DJGPP__ > 1 |
81 | ||
8748735b | 82 | #include <signal.h> |
417a04bb | 83 | #include "syssignal.h" |
8748735b | 84 | |
1bd7b2c7 RS |
85 | #ifndef SYSTEM_MALLOC |
86 | ||
87 | #ifdef GNU_MALLOC | |
88 | ||
89 | /* If other `malloc' than ours is used, force our `sbrk' behave like | |
90 | Unix programs expect (resize memory blocks to keep them contiguous). | |
91 | If `sbrk' from `ralloc.c' is NOT used, also zero-out sbrk'ed memory, | |
92 | because that's what `gmalloc' expects to get. */ | |
93 | #include <crt0.h> | |
94 | ||
95 | #ifdef REL_ALLOC | |
96 | int _crt0_startup_flags = _CRT0_FLAG_UNIX_SBRK; | |
97 | #else /* not REL_ALLOC */ | |
98 | int _crt0_startup_flags = (_CRT0_FLAG_UNIX_SBRK | _CRT0_FLAG_FILL_SBRK_MEMORY); | |
99 | #endif /* not REL_ALLOC */ | |
100 | #endif /* GNU_MALLOC */ | |
101 | ||
102 | #endif /* not SYSTEM_MALLOC */ | |
103 | #endif /* __DJGPP__ > 1 */ | |
aee81730 RS |
104 | |
105 | static unsigned long | |
106 | event_timestamp () | |
107 | { | |
108 | struct time t; | |
109 | unsigned long s; | |
f32d4091 | 110 | |
aee81730 RS |
111 | gettime (&t); |
112 | s = t.ti_min; | |
113 | s *= 60; | |
114 | s += t.ti_sec; | |
115 | s *= 1000; | |
116 | s += t.ti_hund * 10; | |
f32d4091 | 117 | |
aee81730 RS |
118 | return s; |
119 | } | |
120 | ||
f32d4091 KS |
121 | \f |
122 | /* ------------------------ Mouse control --------------------------- | |
123 | * | |
124 | * Coordinates are in screen positions and zero based. | |
125 | * Mouse buttons are numbered from left to right and also zero based. | |
126 | */ | |
1b94449f | 127 | |
0c3cfc51 EZ |
128 | /* This used to be in termhooks.h, but mainstream Emacs code no longer |
129 | uses it, and it was removed... */ | |
130 | #define NUM_MOUSE_BUTTONS (5) | |
131 | ||
f32d4091 KS |
132 | int have_mouse; /* 0: no, 1: enabled, -1: disabled */ |
133 | static int mouse_visible; | |
1b94449f | 134 | |
f32d4091 KS |
135 | static int mouse_last_x; |
136 | static int mouse_last_y; | |
1b94449f | 137 | |
f32d4091 KS |
138 | static int mouse_button_translate[NUM_MOUSE_BUTTONS]; |
139 | static int mouse_button_count; | |
1b94449f | 140 | |
f32d4091 KS |
141 | void |
142 | mouse_on () | |
1b94449f | 143 | { |
1b94449f | 144 | union REGS regs; |
1b94449f | 145 | |
f32d4091 | 146 | if (have_mouse > 0 && !mouse_visible) |
1b94449f | 147 | { |
f32d4091 KS |
148 | if (termscript) |
149 | fprintf (termscript, "<M_ON>"); | |
150 | regs.x.ax = 0x0001; | |
151 | int86 (0x33, ®s, ®s); | |
152 | mouse_visible = 1; | |
1b94449f | 153 | } |
1b94449f RS |
154 | } |
155 | ||
f32d4091 KS |
156 | void |
157 | mouse_off () | |
1b94449f | 158 | { |
f32d4091 | 159 | union REGS regs; |
1b94449f | 160 | |
f32d4091 | 161 | if (have_mouse > 0 && mouse_visible) |
1b94449f | 162 | { |
f32d4091 KS |
163 | if (termscript) |
164 | fprintf (termscript, "<M_OFF>"); | |
165 | regs.x.ax = 0x0002; | |
166 | int86 (0x33, ®s, ®s); | |
167 | mouse_visible = 0; | |
1b94449f | 168 | } |
1b94449f RS |
169 | } |
170 | ||
8f190436 EZ |
171 | static void |
172 | mouse_setup_buttons (int n_buttons) | |
173 | { | |
174 | if (n_buttons == 3) | |
175 | { | |
176 | mouse_button_count = 3; | |
177 | mouse_button_translate[0] = 0; /* Left */ | |
178 | mouse_button_translate[1] = 2; /* Middle */ | |
179 | mouse_button_translate[2] = 1; /* Right */ | |
180 | } | |
181 | else /* two, what else? */ | |
182 | { | |
183 | mouse_button_count = 2; | |
184 | mouse_button_translate[0] = 0; | |
185 | mouse_button_translate[1] = 1; | |
186 | } | |
187 | } | |
188 | ||
189 | DEFUN ("msdos-set-mouse-buttons", Fmsdos_set_mouse_buttons, Smsdos_set_mouse_buttons, | |
190 | 1, 1, "NSet number of mouse buttons to: ", | |
84968b32 EZ |
191 | "Set the number of mouse buttons to use by Emacs.\n\ |
192 | This is useful with mice that report the number of buttons inconsistently,\n\ | |
193 | e.g., if the number of buttons is reported as 3, but Emacs only sees 2 of\n\ | |
8f190436 EZ |
194 | them. This happens with wheeled mice on Windows 9X, for example.") |
195 | (nbuttons) | |
196 | Lisp_Object nbuttons; | |
197 | { | |
e7522695 EZ |
198 | int n; |
199 | ||
8f190436 | 200 | CHECK_NUMBER (nbuttons, 0); |
e7522695 EZ |
201 | n = XINT (nbuttons); |
202 | if (n < 2 || n > 3) | |
203 | Fsignal (Qargs_out_of_range, | |
204 | Fcons (build_string ("only 2 or 3 mouse buttons are supported"), | |
205 | Fcons (nbuttons, Qnil))); | |
206 | mouse_setup_buttons (n); | |
8f190436 EZ |
207 | return Qnil; |
208 | } | |
209 | ||
211c7152 EZ |
210 | static void |
211 | mouse_get_xy (int *x, int *y) | |
212 | { | |
213 | union REGS regs; | |
214 | ||
215 | regs.x.ax = 0x0003; | |
216 | int86 (0x33, ®s, ®s); | |
217 | *x = regs.x.cx / 8; | |
218 | *y = regs.x.dx / 8; | |
219 | } | |
220 | ||
f32d4091 KS |
221 | void |
222 | mouse_moveto (x, y) | |
223 | int x, y; | |
1b94449f | 224 | { |
f32d4091 | 225 | union REGS regs; |
1b94449f | 226 | |
f32d4091 KS |
227 | if (termscript) |
228 | fprintf (termscript, "<M_XY=%dx%d>", x, y); | |
229 | regs.x.ax = 0x0004; | |
230 | mouse_last_x = regs.x.cx = x * 8; | |
231 | mouse_last_y = regs.x.dx = y * 8; | |
232 | int86 (0x33, ®s, ®s); | |
1b94449f RS |
233 | } |
234 | ||
f32d4091 KS |
235 | static int |
236 | mouse_pressed (b, xp, yp) | |
237 | int b, *xp, *yp; | |
1b94449f | 238 | { |
f32d4091 | 239 | union REGS regs; |
1b94449f | 240 | |
f32d4091 KS |
241 | if (b >= mouse_button_count) |
242 | return 0; | |
243 | regs.x.ax = 0x0005; | |
244 | regs.x.bx = mouse_button_translate[b]; | |
245 | int86 (0x33, ®s, ®s); | |
246 | if (regs.x.bx) | |
247 | *xp = regs.x.cx / 8, *yp = regs.x.dx / 8; | |
248 | return (regs.x.bx != 0); | |
1b94449f RS |
249 | } |
250 | ||
f32d4091 KS |
251 | static int |
252 | mouse_released (b, xp, yp) | |
253 | int b, *xp, *yp; | |
1b94449f RS |
254 | { |
255 | union REGS regs; | |
256 | ||
f32d4091 KS |
257 | if (b >= mouse_button_count) |
258 | return 0; | |
259 | regs.x.ax = 0x0006; | |
260 | regs.x.bx = mouse_button_translate[b]; | |
261 | int86 (0x33, ®s, ®s); | |
262 | if (regs.x.bx) | |
263 | *xp = regs.x.cx / 8, *yp = regs.x.dx / 8; | |
264 | return (regs.x.bx != 0); | |
1b94449f RS |
265 | } |
266 | ||
0c7bc1aa EZ |
267 | static int |
268 | mouse_button_depressed (b, xp, yp) | |
269 | int b, *xp, *yp; | |
270 | { | |
271 | union REGS regs; | |
272 | ||
273 | if (b >= mouse_button_count) | |
274 | return 0; | |
275 | regs.x.ax = 0x0003; | |
276 | int86 (0x33, ®s, ®s); | |
277 | if ((regs.x.bx & (1 << mouse_button_translate[b])) != 0) | |
278 | { | |
279 | *xp = regs.x.cx / 8; | |
280 | *yp = regs.x.dx / 8; | |
281 | return 1; | |
282 | } | |
283 | return 0; | |
284 | } | |
285 | ||
f32d4091 KS |
286 | void |
287 | mouse_get_pos (f, insist, bar_window, part, x, y, time) | |
288 | FRAME_PTR *f; | |
289 | int insist; | |
290 | Lisp_Object *bar_window, *x, *y; | |
291 | enum scroll_bar_part *part; | |
292 | unsigned long *time; | |
293 | { | |
294 | int ix, iy; | |
211c7152 EZ |
295 | Lisp_Object frame, tail; |
296 | ||
297 | /* Clear the mouse-moved flag for every frame on this display. */ | |
298 | FOR_EACH_FRAME (tail, frame) | |
299 | XFRAME (frame)->mouse_moved = 0; | |
f32d4091 | 300 | |
2d764c78 | 301 | *f = SELECTED_FRAME(); |
f32d4091 KS |
302 | *bar_window = Qnil; |
303 | mouse_get_xy (&ix, &iy); | |
f32d4091 | 304 | *time = event_timestamp (); |
211c7152 EZ |
305 | *x = make_number (mouse_last_x = ix); |
306 | *y = make_number (mouse_last_y = iy); | |
f32d4091 | 307 | } |
1b94449f | 308 | |
f32d4091 KS |
309 | static void |
310 | mouse_check_moved () | |
1b94449f | 311 | { |
aee81730 | 312 | int x, y; |
1b94449f | 313 | |
f32d4091 | 314 | mouse_get_xy (&x, &y); |
2d764c78 | 315 | SELECTED_FRAME()->mouse_moved |= (x != mouse_last_x || y != mouse_last_y); |
f32d4091 KS |
316 | mouse_last_x = x; |
317 | mouse_last_y = y; | |
318 | } | |
1b94449f | 319 | |
97dd288b EZ |
320 | /* Force the mouse driver to ``forget'' about any button clicks until |
321 | now. */ | |
322 | static void | |
323 | mouse_clear_clicks (void) | |
324 | { | |
325 | int b; | |
326 | ||
327 | for (b = 0; b < mouse_button_count; b++) | |
328 | { | |
329 | int dummy_x, dummy_y; | |
330 | ||
331 | (void) mouse_pressed (b, &dummy_x, &dummy_y); | |
332 | (void) mouse_released (b, &dummy_x, &dummy_y); | |
333 | } | |
334 | } | |
335 | ||
f32d4091 KS |
336 | void |
337 | mouse_init () | |
338 | { | |
339 | union REGS regs; | |
647c32eb | 340 | |
f32d4091 KS |
341 | if (termscript) |
342 | fprintf (termscript, "<M_INIT>"); | |
1b94449f | 343 | |
f32d4091 KS |
344 | regs.x.ax = 0x0021; |
345 | int86 (0x33, ®s, ®s); | |
091d0bdf | 346 | |
0c7bc1aa EZ |
347 | /* Reset the mouse last press/release info. It seems that Windows |
348 | doesn't do that automatically when function 21h is called, which | |
349 | causes Emacs to ``remember'' the click that switched focus to the | |
350 | window just before Emacs was started from that window. */ | |
97dd288b | 351 | mouse_clear_clicks (); |
0c7bc1aa | 352 | |
f32d4091 KS |
353 | regs.x.ax = 0x0007; |
354 | regs.x.cx = 0; | |
355 | regs.x.dx = 8 * (ScreenCols () - 1); | |
356 | int86 (0x33, ®s, ®s); | |
1b94449f | 357 | |
f32d4091 KS |
358 | regs.x.ax = 0x0008; |
359 | regs.x.cx = 0; | |
360 | regs.x.dx = 8 * (ScreenRows () - 1); | |
361 | int86 (0x33, ®s, ®s); | |
1b94449f | 362 | |
f32d4091 KS |
363 | mouse_moveto (0, 0); |
364 | mouse_visible = 0; | |
365 | } | |
3eb1dbb6 | 366 | \f |
f32d4091 KS |
367 | /* ------------------------- Screen control ---------------------- |
368 | * | |
369 | */ | |
aee81730 | 370 | |
f32d4091 | 371 | static int internal_terminal = 0; |
aee81730 | 372 | |
f32d4091 KS |
373 | #ifndef HAVE_X_WINDOWS |
374 | extern unsigned char ScreenAttrib; | |
375 | static int screen_face; | |
376 | static int highlight; | |
aee81730 | 377 | |
f32d4091 KS |
378 | static int screen_size_X; |
379 | static int screen_size_Y; | |
380 | static int screen_size; | |
1b94449f | 381 | |
f32d4091 KS |
382 | static int current_pos_X; |
383 | static int current_pos_Y; | |
384 | static int new_pos_X; | |
385 | static int new_pos_Y; | |
1b94449f | 386 | |
f32d4091 KS |
387 | static void *startup_screen_buffer; |
388 | static int startup_screen_size_X; | |
389 | static int startup_screen_size_Y; | |
390 | static int startup_pos_X; | |
391 | static int startup_pos_Y; | |
c9adab25 | 392 | static unsigned char startup_screen_attrib; |
1b94449f | 393 | |
06b1ea13 EZ |
394 | static clock_t startup_time; |
395 | ||
f32d4091 | 396 | static int term_setup_done; |
1b94449f | 397 | |
8ba01a32 EZ |
398 | static unsigned short outside_cursor; |
399 | ||
f32d4091 | 400 | /* Similar to the_only_frame. */ |
f6816f88 | 401 | struct x_output the_only_x_display; |
1b94449f | 402 | |
039274cf EZ |
403 | /* Support for DOS/V (allows Japanese characters to be displayed on |
404 | standard, non-Japanese, ATs). Only supported for DJGPP v2 and later. */ | |
405 | ||
406 | /* Holds the address of the text-mode screen buffer. */ | |
407 | static unsigned long screen_old_address = 0; | |
408 | /* Segment and offset of the virtual screen. If 0, DOS/V is NOT loaded. */ | |
409 | static unsigned short screen_virtual_segment = 0; | |
410 | static unsigned short screen_virtual_offset = 0; | |
68026917 AI |
411 | /* A flag to control how to display unibyte 8-bit characters. */ |
412 | extern int unibyte_display_via_language_environment; | |
039274cf | 413 | |
8ba01a32 EZ |
414 | Lisp_Object Qbar; |
415 | ||
039274cf EZ |
416 | #if __DJGPP__ > 1 |
417 | /* Update the screen from a part of relocated DOS/V screen buffer which | |
418 | begins at OFFSET and includes COUNT characters. */ | |
419 | static void | |
420 | dosv_refresh_virtual_screen (int offset, int count) | |
421 | { | |
422 | __dpmi_regs regs; | |
423 | ||
9ab8560d | 424 | if (offset < 0 || count < 0) /* paranoia; invalid values crash DOS/V */ |
40437cf5 EZ |
425 | return; |
426 | ||
039274cf EZ |
427 | regs.h.ah = 0xff; /* update relocated screen */ |
428 | regs.x.es = screen_virtual_segment; | |
429 | regs.x.di = screen_virtual_offset + offset; | |
430 | regs.x.cx = count; | |
431 | __dpmi_int (0x10, ®s); | |
432 | } | |
433 | #endif | |
434 | ||
d1d5dc19 | 435 | static void |
f32d4091 KS |
436 | dos_direct_output (y, x, buf, len) |
437 | int y; | |
438 | int x; | |
439 | char *buf; | |
440 | int len; | |
1b94449f | 441 | { |
40437cf5 EZ |
442 | int t0 = 2 * (x + y * screen_size_X); |
443 | int t = t0 + (int) ScreenPrimary; | |
039274cf | 444 | int l0 = len; |
fc171623 KH |
445 | |
446 | #if (__DJGPP__ < 2) | |
f32d4091 KS |
447 | while (--len >= 0) { |
448 | dosmemput (buf++, 1, t); | |
449 | t += 2; | |
450 | } | |
fc171623 KH |
451 | #else |
452 | /* This is faster. */ | |
453 | for (_farsetsel (_dos_ds); --len >= 0; t += 2, buf++) | |
454 | _farnspokeb (t, *buf); | |
039274cf EZ |
455 | |
456 | if (screen_virtual_segment) | |
457 | dosv_refresh_virtual_screen (t0, l0); | |
fc171623 | 458 | #endif |
1b94449f | 459 | } |
aee81730 | 460 | #endif |
1b94449f | 461 | |
1b94449f RS |
462 | /* Flash the screen as a substitute for BEEPs. */ |
463 | ||
f32d4091 | 464 | #if (__DJGPP__ < 2) |
49a09c76 | 465 | static void |
fcea9cd4 | 466 | do_visible_bell (xorattr) |
1b94449f RS |
467 | unsigned char xorattr; |
468 | { | |
49a09c76 | 469 | asm volatile |
ca986694 | 470 | (" movb $1,%%dl |
1b94449f | 471 | visible_bell_0: |
ca986694 | 472 | movl _ScreenPrimary,%%eax |
49a09c76 | 473 | call dosmemsetup |
ca986694 RS |
474 | movl %%eax,%%ebx |
475 | movl %1,%%ecx | |
476 | movb %0,%%al | |
477 | incl %%ebx | |
1b94449f | 478 | visible_bell_1: |
ca986694 RS |
479 | xorb %%al,%%gs:(%%ebx) |
480 | addl $2,%%ebx | |
481 | decl %%ecx | |
49a09c76 | 482 | jne visible_bell_1 |
ca986694 | 483 | decb %%dl |
49a09c76 | 484 | jne visible_bell_3 |
1b94449f | 485 | visible_bell_2: |
ca986694 RS |
486 | movzwl %%ax,%%eax |
487 | movzwl %%ax,%%eax | |
488 | movzwl %%ax,%%eax | |
489 | movzwl %%ax,%%eax | |
490 | decw %%cx | |
49a09c76 RS |
491 | jne visible_bell_2 |
492 | jmp visible_bell_0 | |
ca986694 RS |
493 | visible_bell_3:" |
494 | : /* no output */ | |
f32d4091 | 495 | : "m" (xorattr), "g" (screen_size) |
ca986694 | 496 | : "%eax", "%ebx", /* "%gs",*/ "%ecx", "%edx"); |
1b94449f RS |
497 | } |
498 | ||
f32d4091 KS |
499 | static void |
500 | ScreenVisualBell (void) | |
501 | { | |
502 | /* This creates an xor-mask that will swap the default fore- and | |
503 | background colors. */ | |
504 | do_visible_bell (((the_only_x_display.foreground_pixel | |
505 | ^ the_only_x_display.background_pixel) | |
506 | * 0x11) & 0x7f); | |
507 | } | |
508 | #endif | |
509 | ||
510 | #ifndef HAVE_X_WINDOWS | |
511 | ||
b36701cc RS |
512 | static int blink_bit = -1; /* the state of the blink bit at startup */ |
513 | ||
76ac1508 RS |
514 | /* Enable bright background colors. */ |
515 | static void | |
516 | bright_bg (void) | |
517 | { | |
518 | union REGS regs; | |
519 | ||
b36701cc RS |
520 | /* Remember the original state of the blink/bright-background bit. |
521 | It is stored at 0040:0065h in the BIOS data area. */ | |
522 | if (blink_bit == -1) | |
523 | blink_bit = (_farpeekb (_dos_ds, 0x465) & 0x20) == 0x20; | |
524 | ||
76ac1508 RS |
525 | regs.h.bl = 0; |
526 | regs.x.ax = 0x1003; | |
527 | int86 (0x10, ®s, ®s); | |
528 | } | |
529 | ||
b36701cc RS |
530 | /* Disable bright background colors (and enable blinking) if we found |
531 | the video system in that state at startup. */ | |
532 | static void | |
533 | maybe_enable_blinking (void) | |
534 | { | |
535 | if (blink_bit == 1) | |
536 | { | |
537 | union REGS regs; | |
538 | ||
539 | regs.h.bl = 1; | |
540 | regs.x.ax = 0x1003; | |
541 | int86 (0x10, ®s, ®s); | |
542 | } | |
543 | } | |
544 | ||
8ba01a32 EZ |
545 | /* Return non-zero if the system has a VGA adapter. */ |
546 | static int | |
547 | vga_installed (void) | |
548 | { | |
549 | union REGS regs; | |
550 | ||
551 | regs.x.ax = 0x1a00; | |
552 | int86 (0x10, ®s, ®s); | |
553 | if (regs.h.al == 0x1a && regs.h.bl > 5 && regs.h.bl < 13) | |
554 | return 1; | |
555 | return 0; | |
556 | } | |
557 | ||
4a96d4d2 KH |
558 | /* Set the screen dimensions so that it can show no less than |
559 | ROWS x COLS frame. */ | |
48ffe371 | 560 | |
4a96d4d2 KH |
561 | void |
562 | dos_set_window_size (rows, cols) | |
563 | int *rows, *cols; | |
564 | { | |
565 | char video_name[30]; | |
566 | Lisp_Object video_mode; | |
567 | int video_mode_value; | |
568 | int have_vga = 0; | |
569 | union REGS regs; | |
570 | int current_rows = ScreenRows (), current_cols = ScreenCols (); | |
571 | ||
572 | if (*rows == current_rows && *cols == current_cols) | |
573 | return; | |
574 | ||
4a96d4d2 | 575 | mouse_off (); |
8ba01a32 | 576 | have_vga = vga_installed (); |
4a96d4d2 | 577 | |
48ffe371 | 578 | /* If the user specified a special video mode for these dimensions, |
4a96d4d2 KH |
579 | use that mode. */ |
580 | sprintf (video_name, "screen-dimensions-%dx%d", *rows, *cols); | |
581 | video_mode = XSYMBOL (Fintern_soft (build_string (video_name), | |
582 | Qnil))-> value; | |
583 | ||
584 | if (INTEGERP (video_mode) | |
585 | && (video_mode_value = XINT (video_mode)) > 0) | |
586 | { | |
587 | regs.x.ax = video_mode_value; | |
588 | int86 (0x10, ®s, ®s); | |
48ffe371 RS |
589 | |
590 | if (have_mouse) | |
591 | { | |
592 | /* Must hardware-reset the mouse, or else it won't update | |
593 | its notion of screen dimensions for some non-standard | |
594 | video modes. This is *painfully* slow... */ | |
595 | regs.x.ax = 0; | |
596 | int86 (0x33, ®s, ®s); | |
597 | } | |
4a96d4d2 KH |
598 | } |
599 | ||
600 | /* Find one of the dimensions supported by standard EGA/VGA | |
601 | which gives us at least the required dimensions. */ | |
602 | ||
603 | #if __DJGPP__ > 1 | |
604 | ||
605 | else | |
606 | { | |
607 | static struct { | |
608 | int rows; | |
609 | int need_vga; | |
610 | } std_dimension[] = { | |
611 | {25, 0}, | |
612 | {28, 1}, | |
613 | {35, 0}, | |
614 | {40, 1}, | |
615 | {43, 0}, | |
616 | {50, 1} | |
617 | }; | |
618 | int i = 0; | |
619 | ||
620 | while (i < sizeof (std_dimension) / sizeof (std_dimension[0])) | |
621 | { | |
622 | if (std_dimension[i].need_vga <= have_vga | |
623 | && std_dimension[i].rows >= *rows) | |
624 | { | |
625 | if (std_dimension[i].rows != current_rows | |
626 | || *cols != current_cols) | |
48ffe371 | 627 | _set_screen_lines (std_dimension[i].rows); |
4a96d4d2 KH |
628 | break; |
629 | } | |
48ffe371 | 630 | i++; |
4a96d4d2 KH |
631 | } |
632 | } | |
633 | ||
634 | #else /* not __DJGPP__ > 1 */ | |
635 | ||
636 | else if (*rows <= 25) | |
637 | { | |
638 | if (current_rows != 25 || current_cols != 80) | |
639 | { | |
640 | regs.x.ax = 3; | |
641 | int86 (0x10, ®s, ®s); | |
642 | regs.x.ax = 0x1101; | |
643 | regs.h.bl = 0; | |
644 | int86 (0x10, ®s, ®s); | |
645 | regs.x.ax = 0x1200; | |
646 | regs.h.bl = 32; | |
647 | int86 (0x10, ®s, ®s); | |
648 | regs.x.ax = 3; | |
649 | int86 (0x10, ®s, ®s); | |
650 | } | |
651 | } | |
652 | else if (*rows <= 50) | |
653 | if (have_vga && (current_rows != 50 || current_cols != 80) | |
654 | || *rows <= 43 && (current_rows != 43 || current_cols != 80)) | |
655 | { | |
656 | regs.x.ax = 3; | |
657 | int86 (0x10, ®s, ®s); | |
658 | regs.x.ax = 0x1112; | |
659 | regs.h.bl = 0; | |
660 | int86 (0x10, ®s, ®s); | |
661 | regs.x.ax = 0x1200; | |
662 | regs.h.bl = 32; | |
663 | int86 (0x10, ®s, ®s); | |
664 | regs.x.ax = 0x0100; | |
665 | regs.x.cx = 7; | |
666 | int86 (0x10, ®s, ®s); | |
667 | } | |
668 | #endif /* not __DJGPP__ > 1 */ | |
669 | ||
670 | if (have_mouse) | |
671 | { | |
4a96d4d2 KH |
672 | mouse_init (); |
673 | mouse_on (); | |
674 | } | |
675 | ||
676 | /* Tell the caller what dimensions have been REALLY set. */ | |
677 | *rows = ScreenRows (); | |
678 | *cols = ScreenCols (); | |
76ac1508 | 679 | |
bed43f1d EZ |
680 | /* Update Emacs' notion of screen dimensions. */ |
681 | screen_size_X = *cols; | |
682 | screen_size_Y = *rows; | |
683 | screen_size = *cols * *rows; | |
684 | ||
41ad069b EZ |
685 | #if __DJGPP__ > 1 |
686 | /* If the dimensions changed, the mouse highlight info is invalid. */ | |
687 | if (current_rows != *rows || current_cols != *cols) | |
688 | { | |
689 | struct frame *f = SELECTED_FRAME(); | |
690 | struct display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
691 | Lisp_Object window = dpyinfo->mouse_face_window; | |
692 | ||
693 | if (! NILP (window) && XFRAME (XWINDOW (window)->frame) == f) | |
694 | { | |
695 | dpyinfo->mouse_face_beg_row = dpyinfo->mouse_face_beg_col = -1; | |
696 | dpyinfo->mouse_face_end_row = dpyinfo->mouse_face_end_col = -1; | |
697 | dpyinfo->mouse_face_window = Qnil; | |
698 | } | |
699 | } | |
700 | #endif | |
701 | ||
76ac1508 RS |
702 | /* Enable bright background colors. */ |
703 | bright_bg (); | |
039274cf EZ |
704 | |
705 | /* FIXME: I'm not sure the above will run at all on DOS/V. But let's | |
706 | be defensive anyway. */ | |
707 | if (screen_virtual_segment) | |
708 | dosv_refresh_virtual_screen (0, *cols * *rows); | |
4a96d4d2 KH |
709 | } |
710 | ||
48ffe371 RS |
711 | /* If we write a character in the position where the mouse is, |
712 | the mouse cursor may need to be refreshed. */ | |
09e2ac30 RS |
713 | |
714 | static void | |
f32d4091 | 715 | mouse_off_maybe () |
09e2ac30 | 716 | { |
f32d4091 KS |
717 | int x, y; |
718 | ||
719 | if (!mouse_visible) | |
720 | return; | |
721 | ||
722 | mouse_get_xy (&x, &y); | |
723 | if (y != new_pos_Y || x < new_pos_X) | |
724 | return; | |
725 | ||
726 | mouse_off (); | |
727 | } | |
728 | ||
8ba01a32 EZ |
729 | #define DEFAULT_CURSOR_START (-1) |
730 | #define DEFAULT_CURSOR_WIDTH (-1) | |
731 | #define BOX_CURSOR_WIDTH (-32) | |
732 | ||
733 | /* Set cursor to begin at scan line START_LINE in the character cell | |
734 | and extend for WIDTH scan lines. Scan lines are counted from top | |
735 | of the character cell, starting from zero. */ | |
736 | static void | |
737 | msdos_set_cursor_shape (struct frame *f, int start_line, int width) | |
738 | { | |
739 | #if __DJGPP__ > 1 | |
740 | unsigned desired_cursor; | |
741 | __dpmi_regs regs; | |
742 | int max_line, top_line, bot_line; | |
743 | ||
744 | /* Avoid the costly BIOS call if F isn't the currently selected | |
745 | frame. Allow for NULL as unconditionally meaning the selected | |
746 | frame. */ | |
747 | if (f && f != SELECTED_FRAME()) | |
748 | return; | |
749 | ||
750 | /* The character cell size in scan lines is stored at 40:85 in the | |
751 | BIOS data area. */ | |
752 | max_line = _farpeekw (_dos_ds, 0x485) - 1; | |
753 | switch (max_line) | |
754 | { | |
755 | default: /* this relies on CGA cursor emulation being ON! */ | |
756 | case 7: | |
757 | bot_line = 7; | |
758 | break; | |
759 | case 9: | |
760 | bot_line = 9; | |
761 | break; | |
762 | case 13: | |
763 | bot_line = 12; | |
764 | break; | |
765 | case 15: | |
766 | bot_line = 14; | |
767 | break; | |
768 | } | |
769 | ||
770 | if (width < 0) | |
771 | { | |
772 | if (width == BOX_CURSOR_WIDTH) | |
773 | { | |
774 | top_line = 0; | |
775 | bot_line = max_line; | |
776 | } | |
777 | else if (start_line != DEFAULT_CURSOR_START) | |
778 | { | |
779 | top_line = start_line; | |
780 | bot_line = top_line - width - 1; | |
781 | } | |
782 | else if (width != DEFAULT_CURSOR_WIDTH) | |
783 | { | |
784 | top_line = 0; | |
785 | bot_line = -1 - width; | |
786 | } | |
787 | else | |
788 | top_line = bot_line + 1; | |
789 | } | |
790 | else if (width == 0) | |
791 | { | |
792 | /* [31, 0] seems to DTRT for all screen sizes. */ | |
793 | top_line = 31; | |
794 | bot_line = 0; | |
795 | } | |
796 | else /* WIDTH is positive */ | |
797 | { | |
798 | if (start_line != DEFAULT_CURSOR_START) | |
799 | bot_line = start_line; | |
800 | top_line = bot_line - (width - 1); | |
801 | } | |
802 | ||
803 | /* If the current cursor shape is already what they want, we are | |
804 | history here. */ | |
805 | desired_cursor = ((top_line & 0x1f) << 8) | (bot_line & 0x1f); | |
806 | if (desired_cursor == _farpeekw (_dos_ds, 0x460)) | |
807 | return; | |
808 | ||
809 | regs.h.ah = 1; | |
810 | regs.x.cx = desired_cursor; | |
811 | __dpmi_int (0x10, ®s); | |
812 | #endif /* __DJGPP__ > 1 */ | |
813 | } | |
814 | ||
815 | static void | |
816 | IT_set_cursor_type (struct frame *f, Lisp_Object cursor_type) | |
817 | { | |
818 | if (EQ (cursor_type, Qbar)) | |
819 | { | |
820 | /* Just BAR means the normal EGA/VGA cursor. */ | |
821 | msdos_set_cursor_shape (f, DEFAULT_CURSOR_START, DEFAULT_CURSOR_WIDTH); | |
822 | } | |
823 | else if (CONSP (cursor_type) && EQ (XCAR (cursor_type), Qbar)) | |
824 | { | |
825 | Lisp_Object bar_parms = XCDR (cursor_type); | |
826 | int width; | |
827 | ||
828 | if (INTEGERP (bar_parms)) | |
829 | { | |
830 | /* Feature: negative WIDTH means cursor at the top | |
831 | of the character cell, zero means invisible cursor. */ | |
832 | width = XINT (bar_parms); | |
833 | msdos_set_cursor_shape (f, width >= 0 ? DEFAULT_CURSOR_START : 0, | |
834 | width); | |
835 | } | |
836 | else if (CONSP (bar_parms) | |
837 | && INTEGERP (XCAR (bar_parms)) | |
838 | && INTEGERP (XCDR (bar_parms))) | |
839 | { | |
840 | int start_line = XINT (XCDR (bar_parms)); | |
841 | ||
842 | width = XINT (XCAR (bar_parms)); | |
843 | msdos_set_cursor_shape (f, start_line, width); | |
844 | } | |
845 | } | |
846 | else | |
847 | /* Treat anything unknown as "box cursor". This includes nil, so | |
848 | that a frame which doesn't specify a cursor type gets a box, | |
849 | which is the default in Emacs. */ | |
850 | msdos_set_cursor_shape (f, 0, BOX_CURSOR_WIDTH); | |
851 | } | |
852 | ||
71f65669 EZ |
853 | static void |
854 | IT_ring_bell (void) | |
f32d4091 KS |
855 | { |
856 | if (visible_bell) | |
aee81730 | 857 | { |
f32d4091 KS |
858 | mouse_off (); |
859 | ScreenVisualBell (); | |
aee81730 | 860 | } |
f32d4091 | 861 | else |
3635be47 RS |
862 | { |
863 | union REGS inregs, outregs; | |
864 | inregs.h.ah = 2; | |
865 | inregs.h.dl = 7; | |
866 | intdos (&inregs, &outregs); | |
867 | } | |
09e2ac30 RS |
868 | } |
869 | ||
c77f6f1b EZ |
870 | /* Given a face id FACE, extract the face parameters to be used for |
871 | display until the face changes. The face parameters (actually, its | |
872 | color) are used to construct the video attribute byte for each | |
873 | glyph during the construction of the buffer that is then blitted to | |
874 | the video RAM. */ | |
f32d4091 KS |
875 | static void |
876 | IT_set_face (int face) | |
877 | { | |
2d764c78 | 878 | struct frame *sf = SELECTED_FRAME(); |
546701f5 EZ |
879 | struct face *fp = FACE_FROM_ID (sf, face); |
880 | struct face *dfp = FACE_FROM_ID (sf, DEFAULT_FACE_ID); | |
881 | unsigned long fg, bg, dflt_fg, dflt_bg; | |
f32d4091 | 882 | |
c77f6f1b | 883 | if (!fp) |
e30aee93 | 884 | { |
546701f5 | 885 | fp = dfp; |
e30aee93 EZ |
886 | /* The default face for the frame should always be realized and |
887 | cached. */ | |
888 | if (!fp) | |
889 | abort (); | |
890 | } | |
f32d4091 | 891 | screen_face = face; |
c77f6f1b EZ |
892 | fg = fp->foreground; |
893 | bg = fp->background; | |
546701f5 EZ |
894 | dflt_fg = dfp->foreground; |
895 | dflt_bg = dfp->background; | |
c77f6f1b | 896 | |
3b620731 EZ |
897 | /* Don't use invalid colors. In particular, FACE_TTY_DEFAULT_* |
898 | colors mean use the colors of the default face, except that if | |
899 | highlight is on, invert the foreground and the background. Note | |
900 | that we assume all 16 colors to be available for the background, | |
901 | since Emacs switches on this mode (and loses the blinking | |
902 | attribute) at startup. */ | |
f9d2fdc4 | 903 | if (fg == FACE_TTY_DEFAULT_COLOR || fg == FACE_TTY_DEFAULT_FG_COLOR) |
3b620731 | 904 | fg = FRAME_FOREGROUND_PIXEL (sf); |
f9d2fdc4 | 905 | else if (fg == FACE_TTY_DEFAULT_BG_COLOR) |
3b620731 EZ |
906 | fg = FRAME_BACKGROUND_PIXEL (sf); |
907 | if (bg == FACE_TTY_DEFAULT_COLOR || bg == FACE_TTY_DEFAULT_BG_COLOR) | |
908 | bg = FRAME_BACKGROUND_PIXEL (sf); | |
f9d2fdc4 | 909 | else if (bg == FACE_TTY_DEFAULT_FG_COLOR) |
3b620731 EZ |
910 | bg = FRAME_FOREGROUND_PIXEL (sf); |
911 | ||
912 | /* Make sure highlighted lines really stand out, come what may. */ | |
913 | if ((highlight || fp->tty_reverse_p) | |
546701f5 | 914 | && (fg == dflt_fg && bg == dflt_bg)) |
3b620731 EZ |
915 | { |
916 | unsigned long tem = fg; | |
917 | ||
918 | fg = bg; | |
919 | bg = tem; | |
920 | } | |
76648534 EZ |
921 | /* If the user requested inverse video, obey. */ |
922 | if (inverse_video) | |
923 | { | |
924 | unsigned long tem2 = fg; | |
925 | ||
926 | fg = bg; | |
927 | bg = tem2; | |
928 | } | |
c77f6f1b | 929 | if (termscript) |
3b620731 EZ |
930 | fprintf (termscript, "<FACE %d%s: %d/%d[FG:%d/BG:%d]>", face, |
931 | highlight ? "H" : "", fp->foreground, fp->background, fg, bg); | |
c77f6f1b EZ |
932 | if (fg >= 0 && fg < 16) |
933 | { | |
934 | ScreenAttrib &= 0xf0; | |
935 | ScreenAttrib |= fg; | |
936 | } | |
937 | if (bg >= 0 && bg < 16) | |
938 | { | |
939 | ScreenAttrib &= 0x0f; | |
940 | ScreenAttrib |= ((bg & 0x0f) << 4); | |
941 | } | |
f32d4091 KS |
942 | } |
943 | ||
aa9ce936 EZ |
944 | Lisp_Object Vdos_unsupported_char_glyph; |
945 | ||
71f65669 | 946 | static void |
c77f6f1b | 947 | IT_write_glyphs (struct glyph *str, int str_len) |
f32d4091 | 948 | { |
aa9ce936 EZ |
949 | unsigned char *screen_buf, *screen_bp, *screen_buf_end, *bp; |
950 | int unsupported_face = FAST_GLYPH_FACE (Vdos_unsupported_char_glyph); | |
951 | unsigned unsupported_char= FAST_GLYPH_CHAR (Vdos_unsupported_char_glyph); | |
039274cf | 952 | int offset = 2 * (new_pos_X + screen_size_X * new_pos_Y); |
aa9ce936 EZ |
953 | register int sl = str_len; |
954 | register int tlen = GLYPH_TABLE_LENGTH; | |
955 | register Lisp_Object *tbase = GLYPH_TABLE_BASE; | |
956 | ||
e023fb27 EZ |
957 | /* If terminal_coding does any conversion, use it, otherwise use |
958 | safe_terminal_coding. We can't use CODING_REQUIRE_ENCODING here | |
959 | because it always returns 1 if terminal_coding.src_multibyte is 1. */ | |
960 | struct coding_system *coding = | |
961 | (terminal_coding.common_flags & CODING_REQUIRE_ENCODING_MASK | |
962 | ? &terminal_coding | |
963 | : &safe_terminal_coding); | |
2d764c78 | 964 | struct frame *sf; |
87485d6f | 965 | |
52d38ab2 EZ |
966 | /* Do we need to consider conversion of unibyte characters to |
967 | multibyte? */ | |
968 | int convert_unibyte_characters | |
e16bf494 AI |
969 | = (NILP (current_buffer->enable_multibyte_characters) |
970 | && unibyte_display_via_language_environment); | |
52d38ab2 | 971 | |
648648a9 KH |
972 | unsigned char conversion_buffer[256]; |
973 | int conversion_buffer_size = sizeof conversion_buffer; | |
974 | ||
3b620731 | 975 | if (str_len <= 0) return; |
aee81730 | 976 | |
aa9ce936 EZ |
977 | screen_buf = screen_bp = alloca (str_len * 2); |
978 | screen_buf_end = screen_buf + str_len * 2; | |
2d764c78 | 979 | sf = SELECTED_FRAME(); |
e30aee93 EZ |
980 | |
981 | /* Since faces get cached and uncached behind our back, we can't | |
982 | rely on their indices in the cache being consistent across | |
983 | invocations. So always reset the screen face to the default | |
984 | face of the frame, before writing glyphs, and let the glyphs | |
985 | set the right face if it's different from the default. */ | |
986 | IT_set_face (DEFAULT_FACE_ID); | |
aee81730 | 987 | |
aa9ce936 EZ |
988 | /* The mode bit CODING_MODE_LAST_BLOCK should be set to 1 only at |
989 | the tail. */ | |
990 | terminal_coding.mode &= ~CODING_MODE_LAST_BLOCK; | |
991 | while (sl) | |
992 | { | |
c77f6f1b | 993 | int cf, chlen, enclen; |
3b620731 | 994 | unsigned char workbuf[MAX_MULTIBYTE_LENGTH], *buf; |
c77f6f1b | 995 | unsigned ch; |
aa9ce936 EZ |
996 | |
997 | /* Glyphs with GLYPH_MASK_PADDING bit set are actually there | |
998 | only for the redisplay code to know how many columns does | |
999 | this character occupy on the screen. Skip padding glyphs. */ | |
c77f6f1b | 1000 | if (CHAR_GLYPH_PADDING_P (*str)) |
aa9ce936 EZ |
1001 | { |
1002 | str++; | |
1003 | sl--; | |
1004 | } | |
1005 | else | |
1006 | { | |
04ee4f45 EZ |
1007 | register GLYPH g = GLYPH_FROM_CHAR_GLYPH (*str); |
1008 | int glyph_not_in_table = 0; | |
1009 | ||
78555fbe EZ |
1010 | /* If g is negative, it means we have a multibyte character |
1011 | in *str. That's what GLYPH_FROM_CHAR_GLYPH returns for | |
1012 | multibyte characters. */ | |
04ee4f45 EZ |
1013 | if (g < 0 || g >= tlen) |
1014 | { | |
1015 | /* This glyph doesn't have an entry in Vglyph_table. */ | |
1016 | ch = str->u.ch; | |
1017 | glyph_not_in_table = 1; | |
1018 | } | |
1019 | else | |
1020 | { | |
1021 | /* This glyph has an entry in Vglyph_table, so process | |
1022 | any aliases before testing for simpleness. */ | |
1023 | GLYPH_FOLLOW_ALIASES (tbase, tlen, g); | |
1024 | ch = FAST_GLYPH_CHAR (g); | |
1025 | } | |
1026 | ||
aa9ce936 | 1027 | /* Convert the character code to multibyte, if they |
04ee4f45 EZ |
1028 | requested display via language environment. We only want |
1029 | to convert unibyte characters to multibyte in unibyte | |
1030 | buffers! Otherwise, the 8-bit value in CH came from the | |
1031 | display table set up to display foreign characters. */ | |
52d38ab2 | 1032 | if (SINGLE_BYTE_CHAR_P (ch) && convert_unibyte_characters |
f0dd4c35 EZ |
1033 | && (ch >= 0240 |
1034 | || (ch >= 0200 && !NILP (Vnonascii_translation_table)))) | |
aa9ce936 EZ |
1035 | ch = unibyte_char_to_multibyte (ch); |
1036 | ||
1037 | /* Invalid characters are displayed with a special glyph. */ | |
04ee4f45 | 1038 | if (! CHAR_VALID_P (ch, 0)) |
aa9ce936 EZ |
1039 | { |
1040 | g = !NILP (Vdos_unsupported_char_glyph) | |
1041 | ? Vdos_unsupported_char_glyph | |
2d764c78 | 1042 | : MAKE_GLYPH (sf, '\177', GLYPH_FACE (sf, g)); |
aa9ce936 EZ |
1043 | ch = FAST_GLYPH_CHAR (g); |
1044 | } | |
aa9ce936 EZ |
1045 | |
1046 | /* If the face of this glyph is different from the current | |
1047 | screen face, update the screen attribute byte. */ | |
78555fbe | 1048 | cf = str->face_id; |
aa9ce936 EZ |
1049 | if (cf != screen_face) |
1050 | IT_set_face (cf); /* handles invalid faces gracefully */ | |
1051 | ||
04ee4f45 | 1052 | if (glyph_not_in_table || GLYPH_SIMPLE_P (tbase, tlen, g)) |
3b620731 EZ |
1053 | { |
1054 | /* We generate the multi-byte form of CH in WORKBUF. */ | |
1055 | chlen = CHAR_STRING (ch, workbuf); | |
1056 | buf = workbuf; | |
1057 | } | |
aa9ce936 EZ |
1058 | else |
1059 | { | |
1060 | /* We have a string in Vglyph_table. */ | |
1061 | chlen = GLYPH_LENGTH (tbase, g); | |
1062 | buf = GLYPH_STRING (tbase, g); | |
1063 | } | |
1064 | ||
c77f6f1b | 1065 | /* If the character is not multibyte, don't bother converting it. */ |
aa9ce936 EZ |
1066 | if (chlen == 1) |
1067 | { | |
1068 | *conversion_buffer = (unsigned char)ch; | |
1069 | chlen = 0; | |
1070 | enclen = 1; | |
1071 | } | |
1072 | else | |
1073 | { | |
55a17202 | 1074 | coding->src_multibyte = 1; |
aa9ce936 EZ |
1075 | encode_coding (coding, buf, conversion_buffer, chlen, |
1076 | conversion_buffer_size); | |
1077 | chlen -= coding->consumed; | |
1078 | enclen = coding->produced; | |
1079 | ||
1080 | /* Replace glyph codes that cannot be converted by | |
1081 | terminal_coding with Vdos_unsupported_char_glyph. */ | |
1082 | if (*conversion_buffer == '?') | |
1083 | { | |
5e30eaa2 | 1084 | unsigned char *cbp = conversion_buffer; |
aa9ce936 EZ |
1085 | |
1086 | while (cbp < conversion_buffer + enclen && *cbp == '?') | |
1087 | *cbp++ = unsupported_char; | |
1088 | if (unsupported_face != screen_face) | |
1089 | IT_set_face (unsupported_face); | |
1090 | } | |
1091 | } | |
1092 | ||
1093 | if (enclen + chlen > screen_buf_end - screen_bp) | |
1094 | { | |
1095 | /* The allocated buffer for screen writes is too small. | |
1096 | Flush it and loop again without incrementing STR, so | |
1097 | that the next loop will begin with the same glyph. */ | |
1098 | int nbytes = screen_bp - screen_buf; | |
1099 | ||
1100 | mouse_off_maybe (); | |
1101 | dosmemput (screen_buf, nbytes, (int)ScreenPrimary + offset); | |
1102 | if (screen_virtual_segment) | |
1103 | dosv_refresh_virtual_screen (offset, nbytes / 2); | |
1104 | new_pos_X += nbytes / 2; | |
1105 | offset += nbytes; | |
1106 | ||
1107 | /* Prepare to reuse the same buffer again. */ | |
1108 | screen_bp = screen_buf; | |
1109 | } | |
1110 | else | |
1111 | { | |
1112 | /* There's enough place in the allocated buffer to add | |
1113 | the encoding of this glyph. */ | |
1114 | ||
1115 | /* First, copy the encoded bytes. */ | |
1116 | for (bp = conversion_buffer; enclen--; bp++) | |
1117 | { | |
1118 | *screen_bp++ = (unsigned char)*bp; | |
1119 | *screen_bp++ = ScreenAttrib; | |
1120 | if (termscript) | |
1121 | fputc (*bp, termscript); | |
1122 | } | |
1123 | ||
1124 | /* Now copy the bytes not consumed by the encoding. */ | |
1125 | if (chlen > 0) | |
1126 | { | |
1127 | buf += coding->consumed; | |
1128 | while (chlen--) | |
1129 | { | |
1130 | if (termscript) | |
1131 | fputc (*buf, termscript); | |
1132 | *screen_bp++ = (unsigned char)*buf++; | |
1133 | *screen_bp++ = ScreenAttrib; | |
1134 | } | |
1135 | } | |
1136 | ||
1137 | /* Update STR and its remaining length. */ | |
1138 | str++; | |
1139 | sl--; | |
1140 | } | |
1141 | } | |
aee81730 RS |
1142 | } |
1143 | ||
aa9ce936 | 1144 | /* Dump whatever is left in the screen buffer. */ |
f32d4091 | 1145 | mouse_off_maybe (); |
aa9ce936 | 1146 | dosmemput (screen_buf, screen_bp - screen_buf, (int)ScreenPrimary + offset); |
039274cf | 1147 | if (screen_virtual_segment) |
aa9ce936 EZ |
1148 | dosv_refresh_virtual_screen (offset, (screen_bp - screen_buf) / 2); |
1149 | new_pos_X += (screen_bp - screen_buf) / 2; | |
1150 | ||
1151 | /* We may have to output some codes to terminate the writing. */ | |
1152 | if (CODING_REQUIRE_FLUSHING (coding)) | |
1153 | { | |
1154 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
1155 | encode_coding (coding, "", conversion_buffer, 0, conversion_buffer_size); | |
1156 | if (coding->produced > 0) | |
1157 | { | |
241424da | 1158 | screen_buf = alloca (coding->produced * 2); |
aa9ce936 EZ |
1159 | for (screen_bp = screen_buf, bp = conversion_buffer; |
1160 | coding->produced--; bp++) | |
1161 | { | |
1162 | *screen_bp++ = (unsigned char)*bp; | |
1163 | *screen_bp++ = ScreenAttrib; | |
1164 | if (termscript) | |
1165 | fputc (*bp, termscript); | |
1166 | } | |
1167 | offset += screen_bp - screen_buf; | |
1168 | mouse_off_maybe (); | |
1169 | dosmemput (screen_buf, screen_bp - screen_buf, | |
1170 | (int)ScreenPrimary + offset); | |
1171 | if (screen_virtual_segment) | |
1172 | dosv_refresh_virtual_screen (offset, (screen_bp - screen_buf) / 2); | |
1173 | new_pos_X += (screen_bp - screen_buf) / 2; | |
1174 | } | |
1175 | } | |
f32d4091 | 1176 | } |
aee81730 | 1177 | |
41ad069b EZ |
1178 | /************************************************************************ |
1179 | Mouse Highlight (and friends..) | |
1180 | ************************************************************************/ | |
1181 | ||
1182 | /* This is used for debugging, to turn off note_mouse_highlight. */ | |
1183 | int disable_mouse_highlight; | |
1184 | ||
48c14970 EZ |
1185 | /* If non-nil, dos_rawgetc generates an event to display that string. |
1186 | (The display is done in keyboard.c:read_char, by calling | |
1187 | show_help_echo.) */ | |
41ad069b EZ |
1188 | static Lisp_Object help_echo; |
1189 | static Lisp_Object previous_help_echo; /* a helper temporary variable */ | |
1190 | ||
48c14970 EZ |
1191 | /* These record the window, the object and the position where the help |
1192 | echo string was generated. */ | |
1193 | static Lisp_Object help_echo_window; | |
1194 | static Lisp_Object help_echo_object; | |
1195 | static int help_echo_pos; | |
1196 | ||
41ad069b EZ |
1197 | static int mouse_preempted = 0; /* non-zero when XMenu gobbles mouse events */ |
1198 | ||
1199 | /* Set the mouse pointer shape according to whether it is in the | |
1200 | area where the mouse highlight is in effect. */ | |
1201 | static void | |
1202 | IT_set_mouse_pointer (int mode) | |
1203 | { | |
1204 | /* A no-op for now. DOS text-mode mouse pointer doesn't offer too | |
1205 | many possibilities to change its shape, and the available | |
1206 | functionality pretty much sucks (e.g., almost every reasonable | |
1207 | shape will conceal the character it is on). Since the color of | |
1208 | the pointer changes in the highlighted area, it is not clear to | |
1209 | me whether anything else is required, anyway. */ | |
1210 | } | |
1211 | ||
1212 | /* Display the active region described by mouse_face_* | |
1213 | in its mouse-face if HL > 0, in its normal face if HL = 0. */ | |
1214 | static void | |
1215 | show_mouse_face (struct display_info *dpyinfo, int hl) | |
1216 | { | |
1217 | struct window *w = XWINDOW (dpyinfo->mouse_face_window); | |
1218 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
1219 | int i; | |
1220 | struct face *fp; | |
1221 | ||
1222 | ||
1223 | /* If window is in the process of being destroyed, don't bother | |
1224 | doing anything. */ | |
1225 | if (w->current_matrix == NULL) | |
1226 | goto set_cursor_shape; | |
1227 | ||
1228 | /* Recognize when we are called to operate on rows that don't exist | |
1229 | anymore. This can happen when a window is split. */ | |
1230 | if (dpyinfo->mouse_face_end_row >= w->current_matrix->nrows) | |
1231 | goto set_cursor_shape; | |
1232 | ||
1233 | /* There's no sense to do anything if the mouse face isn't realized. */ | |
1234 | if (hl > 0) | |
1235 | { | |
1236 | fp = FACE_FROM_ID (SELECTED_FRAME(), dpyinfo->mouse_face_face_id); | |
1237 | if (!fp) | |
1238 | goto set_cursor_shape; | |
1239 | } | |
1240 | ||
1241 | /* Note that mouse_face_beg_row etc. are window relative. */ | |
1242 | for (i = dpyinfo->mouse_face_beg_row; | |
1243 | i <= dpyinfo->mouse_face_end_row; | |
1244 | i++) | |
1245 | { | |
1246 | int start_hpos, end_hpos; | |
1247 | struct glyph_row *row = MATRIX_ROW (w->current_matrix, i); | |
1248 | ||
1249 | /* Don't do anything if row doesn't have valid contents. */ | |
1250 | if (!row->enabled_p) | |
1251 | continue; | |
1252 | ||
1253 | /* For all but the first row, the highlight starts at column 0. */ | |
1254 | if (i == dpyinfo->mouse_face_beg_row) | |
1255 | start_hpos = dpyinfo->mouse_face_beg_col; | |
1256 | else | |
1257 | start_hpos = 0; | |
1258 | ||
1259 | if (i == dpyinfo->mouse_face_end_row) | |
1260 | end_hpos = dpyinfo->mouse_face_end_col; | |
1261 | else | |
1262 | end_hpos = row->used[TEXT_AREA]; | |
1263 | ||
1264 | if (end_hpos <= start_hpos) | |
1265 | continue; | |
48c14970 EZ |
1266 | /* Record that some glyphs of this row are displayed in |
1267 | mouse-face. */ | |
1268 | row->mouse_face_p = hl > 0; | |
41ad069b EZ |
1269 | if (hl > 0) |
1270 | { | |
1271 | int vpos = row->y + WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w); | |
1272 | int kstart = start_hpos + WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w); | |
1273 | int nglyphs = end_hpos - start_hpos; | |
1274 | int offset = ScreenPrimary + 2*(vpos*screen_size_X + kstart) + 1; | |
1275 | int start_offset = offset; | |
1276 | ||
1277 | if (termscript) | |
1278 | fprintf (termscript, "\n<MH+ %d-%d:%d>", | |
1279 | kstart, kstart + nglyphs - 1, vpos); | |
1280 | ||
1281 | mouse_off (); | |
1282 | IT_set_face (dpyinfo->mouse_face_face_id); | |
1283 | /* Since we are going to change only the _colors_ of the | |
1284 | displayed text, there's no need to go through all the | |
1285 | pain of generating and encoding the text from the glyphs. | |
1286 | Instead, we simply poke the attribute byte of each | |
1287 | affected position in video memory with the colors | |
1288 | computed by IT_set_face! */ | |
1289 | _farsetsel (_dos_ds); | |
1290 | while (nglyphs--) | |
1291 | { | |
1292 | _farnspokeb (offset, ScreenAttrib); | |
1293 | offset += 2; | |
1294 | } | |
1295 | if (screen_virtual_segment) | |
1296 | dosv_refresh_virtual_screen (start_offset, end_hpos - start_hpos); | |
1297 | mouse_on (); | |
1298 | } | |
1299 | else | |
1300 | { | |
1301 | /* We are removing a previously-drawn mouse highlight. The | |
1302 | safest way to do so is to redraw the glyphs anew, since | |
1303 | all kinds of faces and display tables could have changed | |
1304 | behind our back. */ | |
1305 | int nglyphs = end_hpos - start_hpos; | |
1306 | int save_x = new_pos_X, save_y = new_pos_Y; | |
1307 | ||
1308 | if (end_hpos >= row->used[TEXT_AREA]) | |
1309 | nglyphs = row->used[TEXT_AREA] - start_hpos; | |
1310 | ||
1311 | /* IT_write_glyphs writes at cursor position, so we need to | |
1312 | temporarily move cursor coordinates to the beginning of | |
1313 | the highlight region. */ | |
1314 | new_pos_X = start_hpos + WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w); | |
1315 | new_pos_Y = row->y + WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w); | |
1316 | ||
1317 | if (termscript) | |
1318 | fprintf (termscript, "<MH- %d-%d:%d>", | |
1319 | new_pos_X, new_pos_X + nglyphs - 1, new_pos_Y); | |
1320 | IT_write_glyphs (row->glyphs[TEXT_AREA] + start_hpos, nglyphs); | |
1321 | if (termscript) | |
1322 | fputs ("\n", termscript); | |
1323 | new_pos_X = save_x; | |
1324 | new_pos_Y = save_y; | |
1325 | } | |
1326 | } | |
1327 | ||
1328 | set_cursor_shape: | |
1329 | ||
1330 | /* Change the mouse pointer shape. */ | |
1331 | IT_set_mouse_pointer (hl); | |
1332 | } | |
1333 | ||
1334 | /* Clear out the mouse-highlighted active region. | |
1335 | Redraw it un-highlighted first. */ | |
1336 | static void | |
1337 | clear_mouse_face (struct display_info *dpyinfo) | |
1338 | { | |
1339 | if (! NILP (dpyinfo->mouse_face_window)) | |
1340 | show_mouse_face (dpyinfo, 0); | |
1341 | ||
1342 | dpyinfo->mouse_face_beg_row = dpyinfo->mouse_face_beg_col = -1; | |
1343 | dpyinfo->mouse_face_end_row = dpyinfo->mouse_face_end_col = -1; | |
1344 | dpyinfo->mouse_face_window = Qnil; | |
1345 | } | |
1346 | ||
1347 | /* Find the glyph matrix position of buffer position POS in window W. | |
1348 | *HPOS and *VPOS are set to the positions found. W's current glyphs | |
1349 | must be up to date. If POS is above window start return (0, 0). | |
1350 | If POS is after end of W, return end of last line in W. */ | |
1351 | static int | |
1352 | fast_find_position (struct window *w, int pos, int *hpos, int *vpos) | |
1353 | { | |
1354 | int i; | |
1355 | int lastcol; | |
1356 | int maybe_next_line_p = 0; | |
1357 | int line_start_position; | |
1358 | int yb = window_text_bottom_y (w); | |
1359 | struct glyph_row *row = MATRIX_ROW (w->current_matrix, 0); | |
1360 | struct glyph_row *best_row = row; | |
1361 | ||
1362 | while (row->y < yb) | |
1363 | { | |
1364 | if (row->used[TEXT_AREA]) | |
1365 | line_start_position = row->glyphs[TEXT_AREA]->charpos; | |
1366 | else | |
1367 | line_start_position = 0; | |
1368 | ||
1369 | if (line_start_position > pos) | |
1370 | break; | |
1371 | /* If the position sought is the end of the buffer, | |
1372 | don't include the blank lines at the bottom of the window. */ | |
1373 | else if (line_start_position == pos | |
1374 | && pos == BUF_ZV (XBUFFER (w->buffer))) | |
1375 | { | |
1376 | maybe_next_line_p = 1; | |
1377 | break; | |
1378 | } | |
1379 | else if (line_start_position > 0) | |
1380 | best_row = row; | |
440ffd67 EZ |
1381 | |
1382 | /* Don't overstep the last matrix row, lest we get into the | |
1383 | never-never land... */ | |
1384 | if (row->y + 1 >= yb) | |
1385 | break; | |
41ad069b EZ |
1386 | |
1387 | ++row; | |
1388 | } | |
1389 | ||
1390 | /* Find the right column within BEST_ROW. */ | |
1391 | lastcol = 0; | |
1392 | row = best_row; | |
1393 | for (i = 0; i < row->used[TEXT_AREA]; i++) | |
1394 | { | |
1395 | struct glyph *glyph = row->glyphs[TEXT_AREA] + i; | |
1396 | int charpos; | |
1397 | ||
1398 | charpos = glyph->charpos; | |
1399 | if (charpos == pos) | |
1400 | { | |
1401 | *hpos = i; | |
1402 | *vpos = row->y; | |
1403 | return 1; | |
1404 | } | |
1405 | else if (charpos > pos) | |
1406 | break; | |
1407 | else if (charpos > 0) | |
1408 | lastcol = i; | |
1409 | } | |
1410 | ||
1411 | /* If we're looking for the end of the buffer, | |
1412 | and we didn't find it in the line we scanned, | |
1413 | use the start of the following line. */ | |
1414 | if (maybe_next_line_p) | |
1415 | { | |
1416 | ++row; | |
1417 | lastcol = 0; | |
1418 | } | |
1419 | ||
1420 | *vpos = row->y; | |
1421 | *hpos = lastcol + 1; | |
1422 | return 0; | |
1423 | } | |
1424 | ||
1425 | /* Take proper action when mouse has moved to the mode or top line of | |
1426 | window W, x-position X. MODE_LINE_P non-zero means mouse is on the | |
1427 | mode line. X is relative to the start of the text display area of | |
1428 | W, so the width of bitmap areas and scroll bars must be subtracted | |
1429 | to get a position relative to the start of the mode line. */ | |
1430 | static void | |
1431 | IT_note_mode_line_highlight (struct window *w, int x, int mode_line_p) | |
1432 | { | |
1433 | struct frame *f = XFRAME (w->frame); | |
1434 | struct display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
1435 | struct glyph_row *row; | |
1436 | ||
1437 | if (mode_line_p) | |
1438 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
1439 | else | |
1440 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
1441 | ||
1442 | if (row->enabled_p) | |
1443 | { | |
1444 | extern Lisp_Object Qhelp_echo; | |
1445 | struct glyph *glyph, *end; | |
1446 | Lisp_Object help, map; | |
1447 | ||
1448 | /* Find the glyph under X. */ | |
1449 | glyph = row->glyphs[TEXT_AREA] | |
1450 | + x - FRAME_LEFT_SCROLL_BAR_WIDTH (f) * CANON_X_UNIT (f); | |
1451 | end = glyph + row->used[TEXT_AREA]; | |
1452 | if (glyph < end | |
1453 | && STRINGP (glyph->object) | |
1454 | && XSTRING (glyph->object)->intervals | |
1455 | && glyph->charpos >= 0 | |
1456 | && glyph->charpos < XSTRING (glyph->object)->size) | |
1457 | { | |
1458 | /* If we're on a string with `help-echo' text property, | |
1459 | arrange for the help to be displayed. This is done by | |
1460 | setting the global variable help_echo to the help string. */ | |
1461 | help = Fget_text_property (make_number (glyph->charpos), | |
1462 | Qhelp_echo, glyph->object); | |
b7e80413 | 1463 | if (!NILP (help)) |
48c14970 EZ |
1464 | { |
1465 | help_echo = help; | |
1466 | XSETWINDOW (help_echo_window, w); | |
1467 | help_echo_object = glyph->object; | |
1468 | help_echo_pos = glyph->charpos; | |
1469 | } | |
41ad069b EZ |
1470 | } |
1471 | } | |
1472 | } | |
1473 | ||
1474 | /* Take proper action when the mouse has moved to position X, Y on | |
1475 | frame F as regards highlighting characters that have mouse-face | |
1476 | properties. Also de-highlighting chars where the mouse was before. | |
1477 | X and Y can be negative or out of range. */ | |
1478 | static void | |
1479 | IT_note_mouse_highlight (struct frame *f, int x, int y) | |
1480 | { | |
1481 | struct display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
440ffd67 | 1482 | int portion = -1; |
41ad069b EZ |
1483 | Lisp_Object window; |
1484 | struct window *w; | |
1485 | ||
1486 | /* When a menu is active, don't highlight because this looks odd. */ | |
1487 | if (mouse_preempted) | |
1488 | return; | |
1489 | ||
515d0d0e EZ |
1490 | if (disable_mouse_highlight |
1491 | || !f->glyphs_initialized_p) | |
41ad069b EZ |
1492 | return; |
1493 | ||
1494 | dpyinfo->mouse_face_mouse_x = x; | |
1495 | dpyinfo->mouse_face_mouse_y = y; | |
1496 | dpyinfo->mouse_face_mouse_frame = f; | |
1497 | ||
1498 | if (dpyinfo->mouse_face_defer) | |
1499 | return; | |
1500 | ||
1501 | if (gc_in_progress) | |
1502 | { | |
1503 | dpyinfo->mouse_face_deferred_gc = 1; | |
1504 | return; | |
1505 | } | |
1506 | ||
1507 | /* Which window is that in? */ | |
1508 | window = window_from_coordinates (f, x, y, &portion, 0); | |
1509 | ||
1510 | /* If we were displaying active text in another window, clear that. */ | |
1511 | if (! EQ (window, dpyinfo->mouse_face_window)) | |
1512 | clear_mouse_face (dpyinfo); | |
1513 | ||
1514 | /* Not on a window -> return. */ | |
1515 | if (!WINDOWP (window)) | |
1516 | return; | |
1517 | ||
1518 | /* Convert to window-relative coordinates. */ | |
1519 | w = XWINDOW (window); | |
1520 | x -= WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w); | |
1521 | y -= WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w); | |
1522 | ||
1523 | if (portion == 1 || portion == 3) | |
1524 | { | |
1525 | /* Mouse is on the mode or top line. */ | |
1526 | IT_note_mode_line_highlight (w, x, portion == 1); | |
1527 | return; | |
1528 | } | |
1529 | else | |
1530 | IT_set_mouse_pointer (0); | |
1531 | ||
1532 | /* Are we in a window whose display is up to date? | |
1533 | And verify the buffer's text has not changed. */ | |
1534 | if (/* Within text portion of the window. */ | |
1535 | portion == 0 | |
1536 | && EQ (w->window_end_valid, w->buffer) | |
1537 | && XFASTINT (w->last_modified) == BUF_MODIFF (XBUFFER (w->buffer)) | |
1538 | && (XFASTINT (w->last_overlay_modified) | |
1539 | == BUF_OVERLAY_MODIFF (XBUFFER (w->buffer)))) | |
1540 | { | |
440ffd67 | 1541 | int pos, i; |
41ad069b EZ |
1542 | struct glyph_row *row; |
1543 | struct glyph *glyph; | |
440ffd67 | 1544 | int nrows = w->current_matrix->nrows; |
41ad069b EZ |
1545 | |
1546 | /* Find the glyph under X/Y. */ | |
1547 | glyph = NULL; | |
440ffd67 | 1548 | if (y >= 0 && y < nrows) |
41ad069b EZ |
1549 | { |
1550 | row = MATRIX_ROW (w->current_matrix, y); | |
440ffd67 EZ |
1551 | /* Give up if some row before the one we are looking for is |
1552 | not enabled. */ | |
1553 | for (i = 0; i <= y; i++) | |
1554 | if (!MATRIX_ROW (w->current_matrix, i)->enabled_p) | |
1555 | break; | |
1556 | if (i > y /* all rows upto and including the one at Y are enabled */ | |
41ad069b EZ |
1557 | && row->displays_text_p |
1558 | && x < window_box_width (w, TEXT_AREA)) | |
1559 | { | |
1560 | glyph = row->glyphs[TEXT_AREA]; | |
1561 | if (x >= row->used[TEXT_AREA]) | |
1562 | glyph = NULL; | |
1563 | else | |
1564 | { | |
1565 | glyph += x; | |
1566 | if (!BUFFERP (glyph->object)) | |
1567 | glyph = NULL; | |
1568 | } | |
1569 | } | |
1570 | } | |
1571 | ||
1572 | /* Clear mouse face if X/Y not over text. */ | |
1573 | if (glyph == NULL) | |
1574 | { | |
1575 | clear_mouse_face (dpyinfo); | |
1576 | return; | |
1577 | } | |
1578 | ||
1579 | if (!BUFFERP (glyph->object)) | |
1580 | abort (); | |
1581 | pos = glyph->charpos; | |
1582 | ||
1583 | /* Check for mouse-face and help-echo. */ | |
1584 | { | |
1585 | extern Lisp_Object Qmouse_face; | |
1586 | Lisp_Object mouse_face, overlay, position; | |
1587 | Lisp_Object *overlay_vec; | |
1588 | int len, noverlays; | |
1589 | struct buffer *obuf; | |
1590 | int obegv, ozv; | |
1591 | ||
1592 | /* If we get an out-of-range value, return now; avoid an error. */ | |
1593 | if (pos > BUF_Z (XBUFFER (w->buffer))) | |
1594 | return; | |
1595 | ||
1596 | /* Make the window's buffer temporarily current for | |
1597 | overlays_at and compute_char_face. */ | |
1598 | obuf = current_buffer; | |
1599 | current_buffer = XBUFFER (w->buffer); | |
1600 | obegv = BEGV; | |
1601 | ozv = ZV; | |
1602 | BEGV = BEG; | |
1603 | ZV = Z; | |
1604 | ||
1605 | /* Is this char mouse-active or does it have help-echo? */ | |
1606 | XSETINT (position, pos); | |
1607 | ||
1608 | /* Put all the overlays we want in a vector in overlay_vec. | |
1609 | Store the length in len. If there are more than 10, make | |
1610 | enough space for all, and try again. */ | |
1611 | len = 10; | |
1612 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
99cd7364 | 1613 | noverlays = overlays_at (pos, 0, &overlay_vec, &len, NULL, NULL, 0); |
41ad069b EZ |
1614 | if (noverlays > len) |
1615 | { | |
1616 | len = noverlays; | |
1617 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
99cd7364 EZ |
1618 | noverlays = overlays_at (pos, |
1619 | 0, &overlay_vec, &len, NULL, NULL, 0); | |
41ad069b EZ |
1620 | } |
1621 | ||
f0a4139c | 1622 | /* Sort overlays into increasing priority order. */ |
41ad069b EZ |
1623 | noverlays = sort_overlays (overlay_vec, noverlays, w); |
1624 | ||
1625 | /* Check mouse-face highlighting. */ | |
1626 | if (! (EQ (window, dpyinfo->mouse_face_window) | |
1627 | && y >= dpyinfo->mouse_face_beg_row | |
1628 | && y <= dpyinfo->mouse_face_end_row | |
1629 | && (y > dpyinfo->mouse_face_beg_row | |
1630 | || x >= dpyinfo->mouse_face_beg_col) | |
1631 | && (y < dpyinfo->mouse_face_end_row | |
1632 | || x < dpyinfo->mouse_face_end_col | |
1633 | || dpyinfo->mouse_face_past_end))) | |
1634 | { | |
1635 | /* Clear the display of the old active region, if any. */ | |
1636 | clear_mouse_face (dpyinfo); | |
1637 | ||
1638 | /* Find highest priority overlay that has a mouse-face prop. */ | |
1639 | overlay = Qnil; | |
f0a4139c | 1640 | for (i = noverlays - 1; i >= 0; --i) |
41ad069b EZ |
1641 | { |
1642 | mouse_face = Foverlay_get (overlay_vec[i], Qmouse_face); | |
1643 | if (!NILP (mouse_face)) | |
1644 | { | |
1645 | overlay = overlay_vec[i]; | |
1646 | break; | |
1647 | } | |
1648 | } | |
1649 | ||
1650 | /* If no overlay applies, get a text property. */ | |
1651 | if (NILP (overlay)) | |
1652 | mouse_face = Fget_text_property (position, Qmouse_face, | |
1653 | w->buffer); | |
1654 | ||
1655 | /* Handle the overlay case. */ | |
1656 | if (! NILP (overlay)) | |
1657 | { | |
1658 | /* Find the range of text around this char that | |
1659 | should be active. */ | |
1660 | Lisp_Object before, after; | |
1661 | int ignore; | |
1662 | ||
1663 | before = Foverlay_start (overlay); | |
1664 | after = Foverlay_end (overlay); | |
1665 | /* Record this as the current active region. */ | |
1666 | fast_find_position (w, XFASTINT (before), | |
1667 | &dpyinfo->mouse_face_beg_col, | |
1668 | &dpyinfo->mouse_face_beg_row); | |
1669 | dpyinfo->mouse_face_past_end | |
1670 | = !fast_find_position (w, XFASTINT (after), | |
1671 | &dpyinfo->mouse_face_end_col, | |
1672 | &dpyinfo->mouse_face_end_row); | |
1673 | dpyinfo->mouse_face_window = window; | |
1674 | dpyinfo->mouse_face_face_id | |
1675 | = face_at_buffer_position (w, pos, 0, 0, | |
1676 | &ignore, pos + 1, 1); | |
1677 | ||
1678 | /* Display it as active. */ | |
1679 | show_mouse_face (dpyinfo, 1); | |
1680 | } | |
1681 | /* Handle the text property case. */ | |
1682 | else if (! NILP (mouse_face)) | |
1683 | { | |
1684 | /* Find the range of text around this char that | |
1685 | should be active. */ | |
1686 | Lisp_Object before, after, beginning, end; | |
1687 | int ignore; | |
1688 | ||
1689 | beginning = Fmarker_position (w->start); | |
1690 | XSETINT (end, (BUF_Z (XBUFFER (w->buffer)) | |
1691 | - XFASTINT (w->window_end_pos))); | |
1692 | before | |
1693 | = Fprevious_single_property_change (make_number (pos + 1), | |
1694 | Qmouse_face, | |
1695 | w->buffer, beginning); | |
1696 | after | |
1697 | = Fnext_single_property_change (position, Qmouse_face, | |
1698 | w->buffer, end); | |
1699 | /* Record this as the current active region. */ | |
1700 | fast_find_position (w, XFASTINT (before), | |
1701 | &dpyinfo->mouse_face_beg_col, | |
1702 | &dpyinfo->mouse_face_beg_row); | |
1703 | dpyinfo->mouse_face_past_end | |
1704 | = !fast_find_position (w, XFASTINT (after), | |
1705 | &dpyinfo->mouse_face_end_col, | |
1706 | &dpyinfo->mouse_face_end_row); | |
1707 | dpyinfo->mouse_face_window = window; | |
1708 | dpyinfo->mouse_face_face_id | |
1709 | = face_at_buffer_position (w, pos, 0, 0, | |
1710 | &ignore, pos + 1, 1); | |
1711 | ||
1712 | /* Display it as active. */ | |
1713 | show_mouse_face (dpyinfo, 1); | |
1714 | } | |
1715 | } | |
1716 | ||
1717 | /* Look for a `help-echo' property. */ | |
1718 | { | |
1719 | Lisp_Object help; | |
1720 | extern Lisp_Object Qhelp_echo; | |
1721 | ||
1722 | /* Check overlays first. */ | |
1723 | help = Qnil; | |
f0a4139c EZ |
1724 | for (i = noverlays - 1; i >= 0 && NILP (help); --i) |
1725 | { | |
1726 | overlay = overlay_vec[i]; | |
1727 | help = Foverlay_get (overlay, Qhelp_echo); | |
1728 | } | |
41ad069b | 1729 | |
b7e80413 | 1730 | if (!NILP (help)) |
48c14970 EZ |
1731 | { |
1732 | help_echo = help; | |
1733 | help_echo_window = window; | |
f0a4139c | 1734 | help_echo_object = overlay; |
48c14970 EZ |
1735 | help_echo_pos = pos; |
1736 | } | |
1737 | /* Try text properties. */ | |
1738 | else if (NILP (help) | |
1739 | && ((STRINGP (glyph->object) | |
1740 | && glyph->charpos >= 0 | |
1741 | && glyph->charpos < XSTRING (glyph->object)->size) | |
1742 | || (BUFFERP (glyph->object) | |
1743 | && glyph->charpos >= BEGV | |
1744 | && glyph->charpos < ZV))) | |
1745 | { | |
1746 | help = Fget_text_property (make_number (glyph->charpos), | |
1747 | Qhelp_echo, glyph->object); | |
1748 | if (!NILP (help)) | |
1749 | { | |
1750 | help_echo = help; | |
1751 | help_echo_window = window; | |
1752 | help_echo_object = glyph->object; | |
1753 | help_echo_pos = glyph->charpos; | |
1754 | } | |
1755 | } | |
41ad069b EZ |
1756 | } |
1757 | ||
1758 | BEGV = obegv; | |
1759 | ZV = ozv; | |
1760 | current_buffer = obuf; | |
1761 | } | |
1762 | } | |
1763 | } | |
1764 | ||
71f65669 EZ |
1765 | static void |
1766 | IT_clear_end_of_line (int first_unused) | |
f32d4091 KS |
1767 | { |
1768 | char *spaces, *sp; | |
1769 | int i, j; | |
039274cf | 1770 | int offset = 2 * (new_pos_X + screen_size_X * new_pos_Y); |
aa9ce936 EZ |
1771 | extern int fatal_error_in_progress; |
1772 | ||
2d764c78 | 1773 | if (new_pos_X >= first_unused || fatal_error_in_progress) |
aa9ce936 | 1774 | return; |
f32d4091 KS |
1775 | |
1776 | IT_set_face (0); | |
2d764c78 | 1777 | i = (j = first_unused - new_pos_X) * 2; |
e25d9653 EZ |
1778 | if (termscript) |
1779 | fprintf (termscript, "<CLR:EOL[%d..%d)>", new_pos_X, first_unused); | |
f32d4091 | 1780 | spaces = sp = alloca (i); |
aee81730 | 1781 | |
f32d4091 | 1782 | while (--j >= 0) |
aee81730 | 1783 | { |
f32d4091 KS |
1784 | *sp++ = ' '; |
1785 | *sp++ = ScreenAttrib; | |
aee81730 RS |
1786 | } |
1787 | ||
f32d4091 | 1788 | mouse_off_maybe (); |
039274cf EZ |
1789 | dosmemput (spaces, i, (int)ScreenPrimary + offset); |
1790 | if (screen_virtual_segment) | |
1791 | dosv_refresh_virtual_screen (offset, i / 2); | |
2d764c78 EZ |
1792 | |
1793 | /* clear_end_of_line_raw on term.c leaves the cursor at first_unused. | |
1794 | Let's follow their lead, in case someone relies on this. */ | |
1795 | new_pos_X = first_unused; | |
aee81730 RS |
1796 | } |
1797 | ||
71f65669 | 1798 | static void |
f32d4091 KS |
1799 | IT_clear_screen (void) |
1800 | { | |
1801 | if (termscript) | |
1802 | fprintf (termscript, "<CLR:SCR>"); | |
1803 | IT_set_face (0); | |
1804 | mouse_off (); | |
1805 | ScreenClear (); | |
039274cf EZ |
1806 | if (screen_virtual_segment) |
1807 | dosv_refresh_virtual_screen (0, screen_size); | |
f32d4091 KS |
1808 | new_pos_X = new_pos_Y = 0; |
1809 | } | |
1810 | ||
71f65669 | 1811 | static void |
f32d4091 KS |
1812 | IT_clear_to_end (void) |
1813 | { | |
1814 | if (termscript) | |
1815 | fprintf (termscript, "<CLR:EOS>"); | |
1816 | ||
1817 | while (new_pos_Y < screen_size_Y) { | |
1818 | new_pos_X = 0; | |
e25d9653 | 1819 | IT_clear_end_of_line (screen_size_X); |
f32d4091 KS |
1820 | new_pos_Y++; |
1821 | } | |
1822 | } | |
1823 | ||
71f65669 | 1824 | static void |
f32d4091 KS |
1825 | IT_cursor_to (int y, int x) |
1826 | { | |
1827 | if (termscript) | |
1828 | fprintf (termscript, "\n<XY=%dx%d>", x, y); | |
1829 | new_pos_X = x; | |
1830 | new_pos_Y = y; | |
1831 | } | |
1832 | ||
fc171623 KH |
1833 | static int cursor_cleared; |
1834 | ||
d1d5dc19 | 1835 | static void |
fc171623 KH |
1836 | IT_display_cursor (int on) |
1837 | { | |
1838 | if (on && cursor_cleared) | |
1839 | { | |
1840 | ScreenSetCursor (current_pos_Y, current_pos_X); | |
1841 | cursor_cleared = 0; | |
1842 | } | |
1843 | else if (!on && !cursor_cleared) | |
1844 | { | |
1845 | ScreenSetCursor (-1, -1); | |
1846 | cursor_cleared = 1; | |
1847 | } | |
1848 | } | |
1849 | ||
1850 | /* Emacs calls cursor-movement functions a lot when it updates the | |
1851 | display (probably a legacy of old terminals where you cannot | |
1852 | update a screen line without first moving the cursor there). | |
1853 | However, cursor movement is expensive on MSDOS (it calls a slow | |
1854 | BIOS function and requires 2 mode switches), while actual screen | |
1855 | updates access the video memory directly and don't depend on | |
1856 | cursor position. To avoid slowing down the redisplay, we cheat: | |
1857 | all functions that move the cursor only set internal variables | |
1858 | which record the cursor position, whereas the cursor is only | |
1859 | moved to its final position whenever screen update is complete. | |
1860 | ||
1861 | `IT_cmgoto' is called from the keyboard reading loop and when the | |
1862 | frame update is complete. This means that we are ready for user | |
1863 | input, so we update the cursor position to show where the point is, | |
1864 | and also make the mouse pointer visible. | |
1865 | ||
1866 | Special treatment is required when the cursor is in the echo area, | |
1867 | to put the cursor at the end of the text displayed there. */ | |
1868 | ||
71f65669 EZ |
1869 | static void |
1870 | IT_cmgoto (FRAME_PTR f) | |
fc171623 KH |
1871 | { |
1872 | /* Only set the cursor to where it should be if the display is | |
1873 | already in sync with the window contents. */ | |
2d764c78 EZ |
1874 | int update_cursor_pos = 1; /* MODIFF == unchanged_modified; */ |
1875 | ||
1876 | /* FIXME: This needs to be rewritten for the new redisplay, or | |
1877 | removed. */ | |
1878 | #if 0 | |
06da1de1 EZ |
1879 | static int previous_pos_X = -1; |
1880 | ||
2d764c78 EZ |
1881 | update_cursor_pos = 1; /* temporary!!! */ |
1882 | ||
06da1de1 EZ |
1883 | /* If the display is in sync, forget any previous knowledge about |
1884 | cursor position. This is primarily for unexpected events like | |
1885 | C-g in the minibuffer. */ | |
1886 | if (update_cursor_pos && previous_pos_X >= 0) | |
1887 | previous_pos_X = -1; | |
1888 | /* If we are in the echo area, put the cursor at the | |
1889 | end of the echo area message. */ | |
fc171623 KH |
1890 | if (!update_cursor_pos |
1891 | && XFASTINT (XWINDOW (FRAME_MINIBUF_WINDOW (f))->top) <= new_pos_Y) | |
1892 | { | |
06da1de1 EZ |
1893 | int tem_X = current_pos_X, dummy; |
1894 | ||
1895 | if (echo_area_glyphs) | |
1896 | { | |
1897 | tem_X = echo_area_glyphs_length; | |
1898 | /* Save current cursor position, to be restored after the | |
1899 | echo area message is erased. Only remember one level | |
1900 | of previous cursor position. */ | |
1901 | if (previous_pos_X == -1) | |
1902 | ScreenGetCursor (&dummy, &previous_pos_X); | |
1903 | } | |
1904 | else if (previous_pos_X >= 0) | |
1905 | { | |
1906 | /* We wind up here after the echo area message is erased. | |
1907 | Restore the cursor position we remembered above. */ | |
1908 | tem_X = previous_pos_X; | |
1909 | previous_pos_X = -1; | |
1910 | } | |
9a599a60 | 1911 | |
06da1de1 | 1912 | if (current_pos_X != tem_X) |
9a599a60 EZ |
1913 | { |
1914 | new_pos_X = tem_X; | |
1915 | update_cursor_pos = 1; | |
1916 | } | |
fc171623 | 1917 | } |
2d764c78 | 1918 | #endif |
fc171623 KH |
1919 | |
1920 | if (update_cursor_pos | |
1921 | && (current_pos_X != new_pos_X || current_pos_Y != new_pos_Y)) | |
1922 | { | |
1923 | ScreenSetCursor (current_pos_Y = new_pos_Y, current_pos_X = new_pos_X); | |
1924 | if (termscript) | |
1925 | fprintf (termscript, "\n<CURSOR:%dx%d>", current_pos_X, current_pos_Y); | |
1926 | } | |
1927 | ||
1928 | /* Maybe cursor is invisible, so make it visible. */ | |
1929 | IT_display_cursor (1); | |
1930 | ||
1931 | /* Mouse pointer should be always visible if we are waiting for | |
1932 | keyboard input. */ | |
1933 | if (!mouse_visible) | |
1934 | mouse_on (); | |
1935 | } | |
1936 | ||
71f65669 EZ |
1937 | static void |
1938 | IT_reassert_line_highlight (int new, int vpos) | |
f32d4091 KS |
1939 | { |
1940 | highlight = new; | |
f32d4091 KS |
1941 | } |
1942 | ||
71f65669 | 1943 | static void |
c77f6f1b | 1944 | IT_change_line_highlight (int new_highlight, int y, int vpos, int first_unused_hpos) |
1b94449f | 1945 | { |
f32d4091 | 1946 | highlight = new_highlight; |
f32d4091 KS |
1947 | IT_cursor_to (vpos, 0); |
1948 | IT_clear_end_of_line (first_unused_hpos); | |
1949 | } | |
1950 | ||
71f65669 | 1951 | static void |
41ad069b | 1952 | IT_update_begin (struct frame *f) |
f32d4091 | 1953 | { |
41ad069b | 1954 | struct display_info *display_info = FRAME_X_DISPLAY_INFO (f); |
b9f80d41 | 1955 | struct frame *mouse_face_frame = display_info->mouse_face_mouse_frame; |
41ad069b | 1956 | |
f32d4091 | 1957 | highlight = 0; |
41ad069b EZ |
1958 | |
1959 | BLOCK_INPUT; | |
1960 | ||
b9f80d41 | 1961 | if (f && f == mouse_face_frame) |
41ad069b EZ |
1962 | { |
1963 | /* Don't do highlighting for mouse motion during the update. */ | |
1964 | display_info->mouse_face_defer = 1; | |
1965 | ||
1966 | /* If F needs to be redrawn, simply forget about any prior mouse | |
1967 | highlighting. */ | |
1968 | if (FRAME_GARBAGED_P (f)) | |
1969 | display_info->mouse_face_window = Qnil; | |
1970 | ||
1971 | /* Can we tell that this update does not affect the window | |
1972 | where the mouse highlight is? If so, no need to turn off. | |
48c14970 EZ |
1973 | Likewise, don't do anything if none of the enabled rows |
1974 | contains glyphs highlighted in mouse face. */ | |
8ccb9a54 EZ |
1975 | if (!NILP (display_info->mouse_face_window) |
1976 | && WINDOWP (display_info->mouse_face_window)) | |
41ad069b EZ |
1977 | { |
1978 | struct window *w = XWINDOW (display_info->mouse_face_window); | |
1979 | int i; | |
1980 | ||
8ccb9a54 EZ |
1981 | /* If the mouse highlight is in the window that was deleted |
1982 | (e.g., if it was popped by completion), clear highlight | |
1983 | unconditionally. */ | |
1984 | if (NILP (w->buffer)) | |
1985 | display_info->mouse_face_window = Qnil; | |
1986 | else | |
1987 | { | |
1988 | for (i = 0; i < w->desired_matrix->nrows; ++i) | |
48c14970 EZ |
1989 | if (MATRIX_ROW_ENABLED_P (w->desired_matrix, i) |
1990 | && MATRIX_ROW (w->current_matrix, i)->mouse_face_p) | |
8ccb9a54 EZ |
1991 | break; |
1992 | } | |
41ad069b | 1993 | |
8ccb9a54 | 1994 | if (NILP (w->buffer) || i < w->desired_matrix->nrows) |
41ad069b EZ |
1995 | clear_mouse_face (display_info); |
1996 | } | |
1997 | } | |
b9f80d41 | 1998 | else if (mouse_face_frame && !FRAME_LIVE_P (mouse_face_frame)) |
41ad069b EZ |
1999 | { |
2000 | /* If the frame with mouse highlight was deleted, invalidate the | |
2001 | highlight info. */ | |
2002 | display_info->mouse_face_beg_row = display_info->mouse_face_beg_col = -1; | |
2003 | display_info->mouse_face_end_row = display_info->mouse_face_end_col = -1; | |
2004 | display_info->mouse_face_window = Qnil; | |
2005 | display_info->mouse_face_deferred_gc = 0; | |
2006 | display_info->mouse_face_mouse_frame = NULL; | |
2007 | } | |
2008 | ||
2009 | UNBLOCK_INPUT; | |
f32d4091 KS |
2010 | } |
2011 | ||
71f65669 | 2012 | static void |
41ad069b | 2013 | IT_update_end (struct frame *f) |
f32d4091 | 2014 | { |
41ad069b EZ |
2015 | highlight = 0; |
2016 | FRAME_X_DISPLAY_INFO (f)->mouse_face_defer = 0; | |
2017 | } | |
2018 | ||
8ba01a32 EZ |
2019 | Lisp_Object Qcursor_type; |
2020 | ||
41ad069b EZ |
2021 | static void |
2022 | IT_frame_up_to_date (struct frame *f) | |
2023 | { | |
2024 | struct display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
0c3cfc51 EZ |
2025 | Lisp_Object new_cursor, frame_desired_cursor; |
2026 | struct window *sw; | |
41ad069b EZ |
2027 | |
2028 | if (dpyinfo->mouse_face_deferred_gc | |
b9f80d41 | 2029 | || (f && f == dpyinfo->mouse_face_mouse_frame)) |
41ad069b EZ |
2030 | { |
2031 | BLOCK_INPUT; | |
2032 | if (dpyinfo->mouse_face_mouse_frame) | |
2033 | IT_note_mouse_highlight (dpyinfo->mouse_face_mouse_frame, | |
2034 | dpyinfo->mouse_face_mouse_x, | |
2035 | dpyinfo->mouse_face_mouse_y); | |
2036 | dpyinfo->mouse_face_deferred_gc = 0; | |
2037 | UNBLOCK_INPUT; | |
2038 | } | |
2039 | ||
0c3cfc51 EZ |
2040 | /* Set the cursor type to whatever they wanted. In a minibuffer |
2041 | window, we want the cursor to appear only if we are reading input | |
2042 | from this window, and we want the cursor to be taken from the | |
2043 | frame parameters. For the selected window, we use either its | |
2044 | buffer-local value or the value from the frame parameters if the | |
2045 | buffer doesn't define its local value for the cursor type. */ | |
2046 | sw = XWINDOW (f->selected_window); | |
2047 | frame_desired_cursor = Fcdr (Fassq (Qcursor_type, f->param_alist)); | |
2048 | if (cursor_in_echo_area | |
2049 | && FRAME_HAS_MINIBUF_P (f) | |
2050 | && EQ (FRAME_MINIBUF_WINDOW (f), echo_area_window) | |
2051 | && sw == XWINDOW (echo_area_window)) | |
2052 | new_cursor = frame_desired_cursor; | |
2053 | else | |
2054 | { | |
2055 | struct buffer *b = XBUFFER (sw->buffer); | |
2056 | ||
2057 | if (EQ (b->cursor_type, Qt)) | |
2058 | new_cursor = frame_desired_cursor; | |
2059 | else if (NILP (b->cursor_type)) /* nil means no cursor */ | |
2060 | new_cursor = Fcons (Qbar, make_number (0)); | |
2061 | else | |
2062 | new_cursor = b->cursor_type; | |
2063 | } | |
2064 | ||
2065 | IT_set_cursor_type (f, new_cursor); | |
8ba01a32 | 2066 | |
41ad069b | 2067 | IT_cmgoto (f); /* position cursor when update is done */ |
f32d4091 | 2068 | } |
1b94449f | 2069 | |
c77f6f1b EZ |
2070 | /* Copy LEN glyphs displayed on a single line whose vertical position |
2071 | is YPOS, beginning at horizontal position XFROM to horizontal | |
2072 | position XTO, by moving blocks in the video memory. Used by | |
2073 | functions that insert and delete glyphs. */ | |
2074 | static void | |
2075 | IT_copy_glyphs (int xfrom, int xto, size_t len, int ypos) | |
2076 | { | |
2077 | /* The offsets of source and destination relative to the | |
2078 | conventional memorty selector. */ | |
2079 | int from = 2 * (xfrom + screen_size_X * ypos) + ScreenPrimary; | |
2080 | int to = 2 * (xto + screen_size_X * ypos) + ScreenPrimary; | |
2081 | ||
2082 | if (from == to || len <= 0) | |
2083 | return; | |
2084 | ||
2085 | _farsetsel (_dos_ds); | |
2086 | ||
2087 | /* The source and destination might overlap, so we need to move | |
2088 | glyphs non-destructively. */ | |
2089 | if (from > to) | |
2090 | { | |
2091 | for ( ; len; from += 2, to += 2, len--) | |
2092 | _farnspokew (to, _farnspeekw (from)); | |
2093 | } | |
2094 | else | |
2095 | { | |
2096 | from += (len - 1) * 2; | |
2097 | to += (len - 1) * 2; | |
2098 | for ( ; len; from -= 2, to -= 2, len--) | |
2099 | _farnspokew (to, _farnspeekw (from)); | |
2100 | } | |
2101 | if (screen_virtual_segment) | |
2102 | dosv_refresh_virtual_screen (ypos * screen_size_X * 2, screen_size_X); | |
2103 | } | |
2104 | ||
2105 | /* Insert and delete glyphs. */ | |
aa9ce936 EZ |
2106 | static void |
2107 | IT_insert_glyphs (start, len) | |
c77f6f1b | 2108 | register struct glyph *start; |
aa9ce936 EZ |
2109 | register int len; |
2110 | { | |
c77f6f1b EZ |
2111 | int shift_by_width = screen_size_X - (new_pos_X + len); |
2112 | ||
2113 | /* Shift right the glyphs from the nominal cursor position to the | |
2114 | end of this line. */ | |
2115 | IT_copy_glyphs (new_pos_X, new_pos_X + len, shift_by_width, new_pos_Y); | |
2116 | ||
2117 | /* Now write the glyphs to be inserted. */ | |
2118 | IT_write_glyphs (start, len); | |
aa9ce936 EZ |
2119 | } |
2120 | ||
2121 | static void | |
2122 | IT_delete_glyphs (n) | |
2123 | register int n; | |
2124 | { | |
2125 | abort (); | |
2126 | } | |
2127 | ||
211c7152 | 2128 | /* set-window-configuration on window.c needs this. */ |
3bb1f22f RS |
2129 | void |
2130 | x_set_menu_bar_lines (f, value, oldval) | |
2131 | struct frame *f; | |
2132 | Lisp_Object value, oldval; | |
2133 | { | |
211c7152 EZ |
2134 | set_menu_bar_lines (f, value, oldval); |
2135 | } | |
3bb1f22f | 2136 | |
984f5aaa | 2137 | /* This was copied from xfaces.c */ |
3bb1f22f | 2138 | |
984f5aaa EZ |
2139 | extern Lisp_Object Qbackground_color; |
2140 | extern Lisp_Object Qforeground_color; | |
8ba01a32 | 2141 | Lisp_Object Qreverse; |
211c7152 | 2142 | extern Lisp_Object Qtitle; |
3bb1f22f | 2143 | |
48ffe371 RS |
2144 | /* IT_set_terminal_modes is called when emacs is started, |
2145 | resumed, and whenever the screen is redrawn! */ | |
f32d4091 | 2146 | |
71f65669 | 2147 | static void |
f32d4091 KS |
2148 | IT_set_terminal_modes (void) |
2149 | { | |
aee81730 | 2150 | if (termscript) |
f32d4091 KS |
2151 | fprintf (termscript, "\n<SET_TERM>"); |
2152 | highlight = 0; | |
2153 | ||
2154 | screen_size_X = ScreenCols (); | |
2155 | screen_size_Y = ScreenRows (); | |
2156 | screen_size = screen_size_X * screen_size_Y; | |
aee81730 | 2157 | |
f32d4091 KS |
2158 | new_pos_X = new_pos_Y = 0; |
2159 | current_pos_X = current_pos_Y = -1; | |
2160 | ||
2161 | if (term_setup_done) | |
2162 | return; | |
2163 | term_setup_done = 1; | |
aee81730 | 2164 | |
f32d4091 KS |
2165 | startup_screen_size_X = screen_size_X; |
2166 | startup_screen_size_Y = screen_size_Y; | |
c9adab25 | 2167 | startup_screen_attrib = ScreenAttrib; |
f32d4091 | 2168 | |
039274cf EZ |
2169 | #if __DJGPP__ > 1 |
2170 | /* Is DOS/V (or any other RSIS software which relocates | |
2171 | the screen) installed? */ | |
2172 | { | |
2173 | unsigned short es_value; | |
2174 | __dpmi_regs regs; | |
2175 | ||
2176 | regs.h.ah = 0xfe; /* get relocated screen address */ | |
2177 | if (ScreenPrimary == 0xb0000UL || ScreenPrimary == 0xb8000UL) | |
2178 | regs.x.es = (ScreenPrimary >> 4) & 0xffff; | |
2179 | else if (screen_old_address) /* already switched to Japanese mode once */ | |
2180 | regs.x.es = (screen_old_address >> 4) & 0xffff; | |
2181 | else | |
2182 | regs.x.es = ScreenMode () == 7 ? 0xb000 : 0xb800; | |
2183 | regs.x.di = 0; | |
2184 | es_value = regs.x.es; | |
2185 | __dpmi_int (0x10, ®s); | |
2186 | ||
d1d5dc19 | 2187 | if (regs.x.es != es_value) |
039274cf | 2188 | { |
d1d5dc19 EZ |
2189 | /* screen_old_address is only set if ScreenPrimary does NOT |
2190 | already point to the relocated buffer address returned by | |
2191 | the Int 10h/AX=FEh call above. DJGPP v2.02 and later sets | |
2192 | ScreenPrimary to that address at startup under DOS/V. */ | |
2193 | if (regs.x.es != (ScreenPrimary >> 4) & 0xffff) | |
2194 | screen_old_address = ScreenPrimary; | |
039274cf EZ |
2195 | screen_virtual_segment = regs.x.es; |
2196 | screen_virtual_offset = regs.x.di; | |
2197 | ScreenPrimary = (screen_virtual_segment << 4) + screen_virtual_offset; | |
2198 | } | |
2199 | } | |
2200 | #endif /* __DJGPP__ > 1 */ | |
2201 | ||
f32d4091 KS |
2202 | ScreenGetCursor (&startup_pos_Y, &startup_pos_X); |
2203 | ScreenRetrieve (startup_screen_buffer = xmalloc (screen_size * 2)); | |
2204 | ||
2205 | if (termscript) | |
c9adab25 | 2206 | fprintf (termscript, "<SCREEN SAVED (dimensions=%dx%d)>\n", |
039274cf | 2207 | screen_size_X, screen_size_Y); |
76ac1508 RS |
2208 | |
2209 | bright_bg (); | |
f32d4091 KS |
2210 | } |
2211 | ||
48ffe371 RS |
2212 | /* IT_reset_terminal_modes is called when emacs is |
2213 | suspended or killed. */ | |
f32d4091 | 2214 | |
71f65669 | 2215 | static void |
f32d4091 KS |
2216 | IT_reset_terminal_modes (void) |
2217 | { | |
c9adab25 KH |
2218 | int display_row_start = (int) ScreenPrimary; |
2219 | int saved_row_len = startup_screen_size_X * 2; | |
2220 | int update_row_len = ScreenCols () * 2; | |
2221 | int current_rows = ScreenRows (); | |
2222 | int to_next_row = update_row_len; | |
2223 | unsigned char *saved_row = startup_screen_buffer; | |
2224 | int cursor_pos_X = ScreenCols () - 1; | |
2225 | int cursor_pos_Y = ScreenRows () - 1; | |
2226 | ||
f32d4091 | 2227 | if (termscript) |
5063b150 | 2228 | fprintf (termscript, "\n<RESET_TERM>"); |
f32d4091 KS |
2229 | |
2230 | highlight = 0; | |
2231 | ||
2232 | if (!term_setup_done) | |
2233 | return; | |
2234 | ||
c9adab25 | 2235 | mouse_off (); |
b36701cc RS |
2236 | |
2237 | /* Leave the video system in the same state as we found it, | |
2238 | as far as the blink/bright-background bit is concerned. */ | |
2239 | maybe_enable_blinking (); | |
06b1ea13 | 2240 | |
c9adab25 KH |
2241 | /* We have a situation here. |
2242 | We cannot just do ScreenUpdate(startup_screen_buffer) because | |
2243 | the luser could have changed screen dimensions inside Emacs | |
2244 | and failed (or didn't want) to restore them before killing | |
2245 | Emacs. ScreenUpdate() uses the *current* screen dimensions and | |
2246 | thus will happily use memory outside what was allocated for | |
2247 | `startup_screen_buffer'. | |
2248 | Thus we only restore as much as the current screen dimensions | |
2249 | can hold, and clear the rest (if the saved screen is smaller than | |
2250 | the current) with the color attribute saved at startup. The cursor | |
2251 | is also restored within the visible dimensions. */ | |
2252 | ||
2253 | ScreenAttrib = startup_screen_attrib; | |
c9adab25 | 2254 | |
06b1ea13 EZ |
2255 | /* Don't restore the screen if we are exiting less than 2 seconds |
2256 | after startup: we might be crashing, and the screen might show | |
2257 | some vital clues to what's wrong. */ | |
2258 | if (clock () - startup_time >= 2*CLOCKS_PER_SEC) | |
c9adab25 | 2259 | { |
06b1ea13 | 2260 | ScreenClear (); |
039274cf | 2261 | if (screen_virtual_segment) |
06b1ea13 EZ |
2262 | dosv_refresh_virtual_screen (0, screen_size); |
2263 | ||
2264 | if (update_row_len > saved_row_len) | |
2265 | update_row_len = saved_row_len; | |
2266 | if (current_rows > startup_screen_size_Y) | |
2267 | current_rows = startup_screen_size_Y; | |
2268 | ||
2269 | if (termscript) | |
2270 | fprintf (termscript, "<SCREEN RESTORED (dimensions=%dx%d)>\n", | |
2271 | update_row_len / 2, current_rows); | |
2272 | ||
2273 | while (current_rows--) | |
2274 | { | |
2275 | dosmemput (saved_row, update_row_len, display_row_start); | |
2276 | if (screen_virtual_segment) | |
2277 | dosv_refresh_virtual_screen (display_row_start - ScreenPrimary, | |
2278 | update_row_len / 2); | |
2279 | saved_row += saved_row_len; | |
2280 | display_row_start += to_next_row; | |
2281 | } | |
c9adab25 KH |
2282 | } |
2283 | if (startup_pos_X < cursor_pos_X) | |
2284 | cursor_pos_X = startup_pos_X; | |
2285 | if (startup_pos_Y < cursor_pos_Y) | |
2286 | cursor_pos_Y = startup_pos_Y; | |
2287 | ||
2288 | ScreenSetCursor (cursor_pos_Y, cursor_pos_X); | |
2289 | xfree (startup_screen_buffer); | |
f32d4091 KS |
2290 | |
2291 | term_setup_done = 0; | |
2292 | } | |
2293 | ||
71f65669 EZ |
2294 | static void |
2295 | IT_set_terminal_window (int foo) | |
f32d4091 KS |
2296 | { |
2297 | } | |
2298 | ||
2d764c78 EZ |
2299 | /* Remember the screen colors of the curent frame, to serve as the |
2300 | default colors for newly-created frames. */ | |
2301 | ||
2302 | static int initial_screen_colors[2]; | |
2303 | ||
2304 | DEFUN ("msdos-remember-default-colors", Fmsdos_remember_default_colors, | |
2305 | Smsdos_remember_default_colors, 1, 1, 0, | |
2306 | "Remember the screen colors of the current frame.") | |
2307 | (frame) | |
2308 | Lisp_Object frame; | |
2309 | { | |
2d764c78 EZ |
2310 | struct frame *f; |
2311 | ||
2312 | CHECK_FRAME (frame, 0); | |
2313 | f= XFRAME (frame); | |
2d764c78 | 2314 | |
ff12cd1d EZ |
2315 | /* This function is called after applying default-frame-alist to the |
2316 | initial frame. At that time, if reverse-colors option was | |
2317 | specified in default-frame-alist, it was already applied, and | |
2318 | frame colors are reversed. We need to account for that. */ | |
2319 | if (EQ (Fcdr (Fassq (Qreverse, f->param_alist)), Qt)) | |
2320 | { | |
2321 | initial_screen_colors[0] = FRAME_BACKGROUND_PIXEL (f); | |
2322 | initial_screen_colors[1] = FRAME_FOREGROUND_PIXEL (f); | |
2323 | } | |
2324 | else | |
2325 | { | |
2326 | initial_screen_colors[0] = FRAME_FOREGROUND_PIXEL (f); | |
2327 | initial_screen_colors[1] = FRAME_BACKGROUND_PIXEL (f); | |
2328 | } | |
2d764c78 EZ |
2329 | } |
2330 | ||
f32d4091 | 2331 | void |
3bb1f22f | 2332 | IT_set_frame_parameters (f, alist) |
c77f6f1b | 2333 | struct frame *f; |
f32d4091 KS |
2334 | Lisp_Object alist; |
2335 | { | |
2336 | Lisp_Object tail; | |
db722735 | 2337 | int length = XINT (Flength (alist)); |
2d764c78 | 2338 | int i, j; |
db722735 RS |
2339 | Lisp_Object *parms |
2340 | = (Lisp_Object *) alloca (length * sizeof (Lisp_Object)); | |
2341 | Lisp_Object *values | |
2342 | = (Lisp_Object *) alloca (length * sizeof (Lisp_Object)); | |
2d764c78 | 2343 | /* Do we have to reverse the foreground and background colors? */ |
8ba01a32 | 2344 | int reverse = EQ (Fcdr (Fassq (Qreverse, f->param_alist)), Qt); |
2d764c78 EZ |
2345 | int was_reverse = reverse; |
2346 | int redraw = 0, fg_set = 0, bg_set = 0; | |
546701f5 | 2347 | int need_to_reverse; |
2d764c78 EZ |
2348 | unsigned long orig_fg; |
2349 | unsigned long orig_bg; | |
546701f5 | 2350 | Lisp_Object frame_bg, frame_fg; |
53704a07 | 2351 | extern Lisp_Object Qdefault, QCforeground, QCbackground; |
2d764c78 EZ |
2352 | |
2353 | /* If we are creating a new frame, begin with the original screen colors | |
2354 | used for the initial frame. */ | |
2355 | if (alist == Vdefault_frame_alist | |
2356 | && initial_screen_colors[0] != -1 && initial_screen_colors[1] != -1) | |
2357 | { | |
2358 | FRAME_FOREGROUND_PIXEL (f) = initial_screen_colors[0]; | |
2359 | FRAME_BACKGROUND_PIXEL (f) = initial_screen_colors[1]; | |
2360 | } | |
2361 | orig_fg = FRAME_FOREGROUND_PIXEL (f); | |
2362 | orig_bg = FRAME_BACKGROUND_PIXEL (f); | |
546701f5 EZ |
2363 | frame_fg = Fcdr (Fassq (Qforeground_color, f->param_alist)); |
2364 | frame_bg = Fcdr (Fassq (Qbackground_color, f->param_alist)); | |
2365 | /* frame_fg and frame_bg could be nil if, for example, | |
2366 | f->param_alist is nil, e.g. if we are called from | |
2367 | Fmake_terminal_frame. */ | |
2368 | if (NILP (frame_fg)) | |
2369 | frame_fg = build_string (unspecified_fg); | |
2370 | if (NILP (frame_bg)) | |
2371 | frame_bg = build_string (unspecified_bg); | |
db722735 RS |
2372 | |
2373 | /* Extract parm names and values into those vectors. */ | |
2374 | i = 0; | |
f32d4091 KS |
2375 | for (tail = alist; CONSP (tail); tail = Fcdr (tail)) |
2376 | { | |
db722735 | 2377 | Lisp_Object elt; |
f32d4091 KS |
2378 | |
2379 | elt = Fcar (tail); | |
db722735 RS |
2380 | parms[i] = Fcar (elt); |
2381 | CHECK_SYMBOL (parms[i], 1); | |
2382 | values[i] = Fcdr (elt); | |
2383 | i++; | |
2384 | } | |
2385 | ||
2d764c78 | 2386 | j = i; |
db722735 | 2387 | |
2d764c78 EZ |
2388 | for (i = 0; i < j; i++) |
2389 | { | |
1e21fe48 EZ |
2390 | Lisp_Object prop, val; |
2391 | ||
2392 | prop = parms[i]; | |
2393 | val = values[i]; | |
2d764c78 | 2394 | |
8ba01a32 | 2395 | if (EQ (prop, Qreverse)) |
2d764c78 EZ |
2396 | reverse = EQ (val, Qt); |
2397 | } | |
546701f5 EZ |
2398 | |
2399 | need_to_reverse = reverse && !was_reverse; | |
2400 | if (termscript && need_to_reverse) | |
2d764c78 EZ |
2401 | fprintf (termscript, "<INVERSE-VIDEO>\n"); |
2402 | ||
2403 | /* Now process the alist elements in reverse of specified order. */ | |
db722735 RS |
2404 | for (i--; i >= 0; i--) |
2405 | { | |
1e21fe48 EZ |
2406 | Lisp_Object prop, val; |
2407 | Lisp_Object frame; | |
2408 | ||
2409 | prop = parms[i]; | |
2410 | val = values[i]; | |
f32d4091 | 2411 | |
4e825084 | 2412 | if (EQ (prop, Qforeground_color)) |
f32d4091 | 2413 | { |
546701f5 | 2414 | unsigned long new_color = load_color (f, NULL, val, need_to_reverse |
2d764c78 EZ |
2415 | ? LFACE_BACKGROUND_INDEX |
2416 | : LFACE_FOREGROUND_INDEX); | |
3b620731 EZ |
2417 | if (new_color != FACE_TTY_DEFAULT_COLOR |
2418 | && new_color != FACE_TTY_DEFAULT_FG_COLOR | |
2419 | && new_color != FACE_TTY_DEFAULT_BG_COLOR) | |
f32d4091 | 2420 | { |
546701f5 | 2421 | FRAME_FOREGROUND_PIXEL (f) = new_color; |
1e21fe48 EZ |
2422 | /* Make sure the foreground of the default face for this |
2423 | frame is changed as well. */ | |
2424 | XSETFRAME (frame, f); | |
546701f5 | 2425 | if (need_to_reverse) |
1e21fe48 | 2426 | { |
1e21fe48 EZ |
2427 | Finternal_set_lisp_face_attribute (Qdefault, QCbackground, |
2428 | val, frame); | |
546701f5 | 2429 | prop = Qbackground_color; |
ff12cd1d | 2430 | bg_set = 1; |
1e21fe48 | 2431 | } |
2d764c78 | 2432 | else |
1e21fe48 | 2433 | { |
1e21fe48 EZ |
2434 | Finternal_set_lisp_face_attribute (Qdefault, QCforeground, |
2435 | val, frame); | |
ff12cd1d | 2436 | fg_set = 1; |
1e21fe48 | 2437 | } |
f32d4091 | 2438 | redraw = 1; |
76ac1508 | 2439 | if (termscript) |
a7cf9151 | 2440 | fprintf (termscript, "<FGCOLOR %lu>\n", new_color); |
f32d4091 KS |
2441 | } |
2442 | } | |
4e825084 | 2443 | else if (EQ (prop, Qbackground_color)) |
f32d4091 | 2444 | { |
546701f5 | 2445 | unsigned long new_color = load_color (f, NULL, val, need_to_reverse |
2d764c78 EZ |
2446 | ? LFACE_FOREGROUND_INDEX |
2447 | : LFACE_BACKGROUND_INDEX); | |
3b620731 EZ |
2448 | if (new_color != FACE_TTY_DEFAULT_COLOR |
2449 | && new_color != FACE_TTY_DEFAULT_FG_COLOR | |
2450 | && new_color != FACE_TTY_DEFAULT_BG_COLOR) | |
f32d4091 | 2451 | { |
546701f5 | 2452 | FRAME_BACKGROUND_PIXEL (f) = new_color; |
1e21fe48 EZ |
2453 | /* Make sure the background of the default face for this |
2454 | frame is changed as well. */ | |
2455 | XSETFRAME (frame, f); | |
546701f5 | 2456 | if (need_to_reverse) |
1e21fe48 | 2457 | { |
1e21fe48 EZ |
2458 | Finternal_set_lisp_face_attribute (Qdefault, QCforeground, |
2459 | val, frame); | |
546701f5 | 2460 | prop = Qforeground_color; |
ff12cd1d | 2461 | fg_set = 1; |
1e21fe48 | 2462 | } |
2d764c78 | 2463 | else |
1e21fe48 | 2464 | { |
1e21fe48 EZ |
2465 | Finternal_set_lisp_face_attribute (Qdefault, QCbackground, |
2466 | val, frame); | |
ff12cd1d | 2467 | bg_set = 1; |
1e21fe48 | 2468 | } |
f32d4091 | 2469 | redraw = 1; |
76ac1508 | 2470 | if (termscript) |
a7cf9151 | 2471 | fprintf (termscript, "<BGCOLOR %lu>\n", new_color); |
f32d4091 KS |
2472 | } |
2473 | } | |
211c7152 EZ |
2474 | else if (EQ (prop, Qtitle)) |
2475 | { | |
2476 | x_set_title (f, val); | |
2477 | if (termscript) | |
2478 | fprintf (termscript, "<TITLE: %s>\n", XSTRING (val)->data); | |
2479 | } | |
8ba01a32 EZ |
2480 | else if (EQ (prop, Qcursor_type)) |
2481 | { | |
2482 | IT_set_cursor_type (f, val); | |
2483 | if (termscript) | |
2484 | fprintf (termscript, "<CTYPE: %s>\n", | |
2485 | EQ (val, Qbar) || CONSP (val) && EQ (XCAR (val), Qbar) | |
2486 | ? "bar" : "box"); | |
2487 | } | |
db722735 | 2488 | store_frame_param (f, prop, val); |
2d764c78 | 2489 | } |
db722735 | 2490 | |
2d764c78 EZ |
2491 | /* If they specified "reverse", but not the colors, we need to swap |
2492 | the current frame colors. */ | |
546701f5 | 2493 | if (need_to_reverse) |
2d764c78 | 2494 | { |
1e21fe48 EZ |
2495 | Lisp_Object frame; |
2496 | ||
2d764c78 EZ |
2497 | if (!fg_set) |
2498 | { | |
1e21fe48 | 2499 | XSETFRAME (frame, f); |
ff12cd1d EZ |
2500 | Finternal_set_lisp_face_attribute (Qdefault, QCforeground, |
2501 | tty_color_name (f, orig_bg), | |
53704a07 | 2502 | frame); |
2d764c78 EZ |
2503 | redraw = 1; |
2504 | } | |
2505 | if (!bg_set) | |
2506 | { | |
1e21fe48 | 2507 | XSETFRAME (frame, f); |
ff12cd1d EZ |
2508 | Finternal_set_lisp_face_attribute (Qdefault, QCbackground, |
2509 | tty_color_name (f, orig_fg), | |
53704a07 | 2510 | frame); |
2d764c78 EZ |
2511 | redraw = 1; |
2512 | } | |
f32d4091 KS |
2513 | } |
2514 | ||
2515 | if (redraw) | |
2516 | { | |
2d764c78 EZ |
2517 | face_change_count++; /* forces xdisp.c to recompute basic faces */ |
2518 | if (f == SELECTED_FRAME()) | |
3bb1f22f | 2519 | redraw_frame (f); |
f32d4091 KS |
2520 | } |
2521 | } | |
2522 | ||
a7cf9151 EZ |
2523 | extern void init_frame_faces (FRAME_PTR); |
2524 | ||
f32d4091 KS |
2525 | #endif /* !HAVE_X_WINDOWS */ |
2526 | ||
2527 | ||
48ffe371 RS |
2528 | /* Do we need the internal terminal? */ |
2529 | ||
f32d4091 KS |
2530 | void |
2531 | internal_terminal_init () | |
2532 | { | |
2533 | char *term = getenv ("TERM"); | |
2534 | char *colors; | |
2d764c78 | 2535 | struct frame *sf = SELECTED_FRAME(); |
f32d4091 KS |
2536 | |
2537 | #ifdef HAVE_X_WINDOWS | |
2538 | if (!inhibit_window_system) | |
2539 | return; | |
2540 | #endif | |
2541 | ||
2542 | internal_terminal | |
2543 | = (!noninteractive) && term && !strcmp (term, "internal"); | |
2544 | ||
2545 | if (getenv ("EMACSTEST")) | |
5063b150 | 2546 | termscript = fopen (getenv ("EMACSTEST"), "wt"); |
f32d4091 KS |
2547 | |
2548 | #ifndef HAVE_X_WINDOWS | |
2549 | if (!internal_terminal || inhibit_window_system) | |
2550 | { | |
2d764c78 | 2551 | sf->output_method = output_termcap; |
f32d4091 KS |
2552 | return; |
2553 | } | |
2554 | ||
2555 | Vwindow_system = intern ("pc"); | |
2556 | Vwindow_system_version = make_number (1); | |
2d764c78 | 2557 | sf->output_method = output_msdos_raw; |
039274cf EZ |
2558 | |
2559 | /* If Emacs was dumped on DOS/V machine, forget the stale VRAM address. */ | |
2560 | screen_old_address = 0; | |
2561 | ||
2d764c78 EZ |
2562 | /* Forget the stale screen colors as well. */ |
2563 | initial_screen_colors[0] = initial_screen_colors[1] = -1; | |
2564 | ||
f32d4091 KS |
2565 | bzero (&the_only_x_display, sizeof the_only_x_display); |
2566 | the_only_x_display.background_pixel = 7; /* White */ | |
2567 | the_only_x_display.foreground_pixel = 0; /* Black */ | |
76ac1508 | 2568 | bright_bg (); |
5063b150 | 2569 | colors = getenv ("EMACSCOLORS"); |
f32d4091 KS |
2570 | if (colors && strlen (colors) >= 2) |
2571 | { | |
76ac1508 RS |
2572 | /* The colors use 4 bits each (we enable bright background). */ |
2573 | if (isdigit (colors[0])) | |
2574 | colors[0] -= '0'; | |
2575 | else if (isxdigit (colors[0])) | |
2576 | colors[0] -= (isupper (colors[0]) ? 'A' : 'a') - 10; | |
1bd7b2c7 RS |
2577 | if (colors[0] >= 0 && colors[0] < 16) |
2578 | the_only_x_display.foreground_pixel = colors[0]; | |
76ac1508 RS |
2579 | if (isdigit (colors[1])) |
2580 | colors[1] -= '0'; | |
2581 | else if (isxdigit (colors[1])) | |
2582 | colors[1] -= (isupper (colors[1]) ? 'A' : 'a') - 10; | |
2583 | if (colors[1] >= 0 && colors[1] < 16) | |
1bd7b2c7 | 2584 | the_only_x_display.background_pixel = colors[1]; |
f32d4091 KS |
2585 | } |
2586 | the_only_x_display.line_height = 1; | |
64ec6a02 | 2587 | the_only_x_display.font = (XFontStruct *)1; /* must *not* be zero */ |
41ad069b EZ |
2588 | the_only_x_display.display_info.mouse_face_mouse_frame = NULL; |
2589 | the_only_x_display.display_info.mouse_face_deferred_gc = 0; | |
2590 | the_only_x_display.display_info.mouse_face_beg_row = | |
2591 | the_only_x_display.display_info.mouse_face_beg_col = -1; | |
2592 | the_only_x_display.display_info.mouse_face_end_row = | |
2593 | the_only_x_display.display_info.mouse_face_end_col = -1; | |
2594 | the_only_x_display.display_info.mouse_face_face_id = DEFAULT_FACE_ID; | |
2595 | the_only_x_display.display_info.mouse_face_window = Qnil; | |
2596 | the_only_x_display.display_info.mouse_face_mouse_x = | |
2597 | the_only_x_display.display_info.mouse_face_mouse_y = 0; | |
2598 | the_only_x_display.display_info.mouse_face_defer = 0; | |
f32d4091 | 2599 | |
2d764c78 | 2600 | init_frame_faces (sf); |
f32d4091 KS |
2601 | |
2602 | ring_bell_hook = IT_ring_bell; | |
aa9ce936 EZ |
2603 | insert_glyphs_hook = IT_insert_glyphs; |
2604 | delete_glyphs_hook = IT_delete_glyphs; | |
f32d4091 KS |
2605 | write_glyphs_hook = IT_write_glyphs; |
2606 | cursor_to_hook = raw_cursor_to_hook = IT_cursor_to; | |
2607 | clear_to_end_hook = IT_clear_to_end; | |
2608 | clear_end_of_line_hook = IT_clear_end_of_line; | |
2609 | clear_frame_hook = IT_clear_screen; | |
2610 | change_line_highlight_hook = IT_change_line_highlight; | |
2611 | update_begin_hook = IT_update_begin; | |
2612 | update_end_hook = IT_update_end; | |
2613 | reassert_line_highlight_hook = IT_reassert_line_highlight; | |
41ad069b | 2614 | frame_up_to_date_hook = IT_frame_up_to_date; |
f32d4091 KS |
2615 | |
2616 | /* These hooks are called by term.c without being checked. */ | |
2617 | set_terminal_modes_hook = IT_set_terminal_modes; | |
2618 | reset_terminal_modes_hook = IT_reset_terminal_modes; | |
2619 | set_terminal_window_hook = IT_set_terminal_window; | |
c77f6f1b | 2620 | char_ins_del_ok = 0; |
f32d4091 KS |
2621 | #endif |
2622 | } | |
2623 | ||
2624 | dos_get_saved_screen (screen, rows, cols) | |
2625 | char **screen; | |
2626 | int *rows; | |
2627 | int *cols; | |
2628 | { | |
2629 | #ifndef HAVE_X_WINDOWS | |
2630 | *screen = startup_screen_buffer; | |
2631 | *cols = startup_screen_size_X; | |
2632 | *rows = startup_screen_size_Y; | |
039274cf | 2633 | return *screen != (char *)0; |
f32d4091 KS |
2634 | #else |
2635 | return 0; | |
2636 | #endif | |
2637 | } | |
3bb1f22f RS |
2638 | |
2639 | #ifndef HAVE_X_WINDOWS | |
2640 | ||
2641 | /* We are not X, but we can emulate it well enough for our needs... */ | |
2642 | void | |
2643 | check_x (void) | |
2644 | { | |
2d764c78 EZ |
2645 | if (! FRAME_MSDOS_P (SELECTED_FRAME())) |
2646 | error ("Not running under a window system"); | |
3bb1f22f RS |
2647 | } |
2648 | ||
2649 | #endif | |
2650 | ||
5063b150 | 2651 | \f |
f32d4091 KS |
2652 | /* ----------------------- Keyboard control ---------------------- |
2653 | * | |
2654 | * Keymaps reflect the following keyboard layout: | |
2655 | * | |
2656 | * 0 1 2 3 4 5 6 7 8 9 10 11 12 BS | |
2657 | * TAB 15 16 17 18 19 20 21 22 23 24 25 26 (41) | |
2658 | * CLOK 30 31 32 33 34 35 36 37 38 39 40 (41) RET | |
2659 | * SH () 45 46 47 48 49 50 51 52 53 54 SHIFT | |
2660 | * SPACE | |
2661 | */ | |
2662 | ||
d1d5dc19 EZ |
2663 | #define Ignore 0x0000 |
2664 | #define Normal 0x0000 /* normal key - alt changes scan-code */ | |
2665 | #define FctKey 0x1000 /* func key if c == 0, else c */ | |
2666 | #define Special 0x2000 /* func key even if c != 0 */ | |
2667 | #define ModFct 0x3000 /* special if mod-keys, else 'c' */ | |
2668 | #define Map 0x4000 /* alt scan-code, map to unshift/shift key */ | |
2669 | #define KeyPad 0x5000 /* map to insert/kp-0 depending on c == 0xe0 */ | |
2670 | #define Grey 0x6000 /* Grey keypad key */ | |
2671 | ||
2672 | #define Alt 0x0100 /* alt scan-code */ | |
2673 | #define Ctrl 0x0200 /* ctrl scan-code */ | |
2674 | #define Shift 0x0400 /* shift scan-code */ | |
2675 | ||
f32d4091 KS |
2676 | static int extended_kbd; /* 101 (102) keyboard present. */ |
2677 | ||
d1d5dc19 EZ |
2678 | struct kbd_translate { |
2679 | unsigned char sc; | |
2680 | unsigned char ch; | |
2681 | unsigned short code; | |
2682 | }; | |
2683 | ||
f32d4091 KS |
2684 | struct dos_keyboard_map |
2685 | { | |
2686 | char *unshifted; | |
2687 | char *shifted; | |
2688 | char *alt_gr; | |
d1d5dc19 | 2689 | struct kbd_translate *translate_table; |
f32d4091 KS |
2690 | }; |
2691 | ||
2692 | ||
2693 | static struct dos_keyboard_map us_keyboard = { | |
2694 | /* 0 1 2 3 4 5 */ | |
2695 | /* 01234567890123456789012345678901234567890 12345678901234 */ | |
2696 | "`1234567890-= qwertyuiop[] asdfghjkl;'\\ zxcvbnm,./ ", | |
2697 | /* 0123456789012345678901234567890123456789 012345678901234 */ | |
2698 | "~!@#$%^&*()_+ QWERTYUIOP{} ASDFGHJKL:\"| ZXCVBNM<>? ", | |
d1d5dc19 EZ |
2699 | 0, /* no Alt-Gr key */ |
2700 | 0 /* no translate table */ | |
f32d4091 KS |
2701 | }; |
2702 | ||
2703 | static struct dos_keyboard_map fr_keyboard = { | |
2704 | /* 0 1 2 3 4 5 */ | |
2705 | /* 012 3456789012345678901234567890123456789012345678901234 */ | |
2706 |