1 /* MS-DOS specific C utilities. -*- coding: raw-text -*-
2 Copyright (C) 1993, 94, 95, 96, 97, 1999, 2000, 2001
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 /* Contributed by Morten Welinder */
23 /* New display, keyboard, and mouse control by Kim F. Storm */
25 /* Note: some of the stuff here was taken from end of sysdep.c in demacs. */
34 #include <sys/param.h>
38 #include <string.h> /* for bzero and string functions */
39 #include <sys/stat.h> /* for _fixpath */
40 #include <unistd.h> /* for chdir, dup, dup2, etc. */
41 #include <dir.h> /* for getdisk */
44 #include <io.h> /* for setmode */
45 #include <dpmi.h> /* for __dpmi_xxx stuff */
46 #include <sys/farptr.h> /* for _farsetsel, _farnspokeb */
47 #include <libc/dosio.h> /* for _USE_LFN */
48 #include <conio.h> /* for cputs */
53 #include "termhooks.h"
55 #include "dispextern.h"
65 #include "blockinput.h"
70 /* #include <process.h> */
71 /* Damn that local process.h! Instead we can define P_WAIT ourselves. */
79 #define _dos_ds _go32_info_block.selector_for_linear_memory
85 #include "syssignal.h"
91 /* If other `malloc' than ours is used, force our `sbrk' behave like
92 Unix programs expect (resize memory blocks to keep them contiguous).
93 If `sbrk' from `ralloc.c' is NOT used, also zero-out sbrk'ed memory,
94 because that's what `gmalloc' expects to get. */
98 int _crt0_startup_flags
= _CRT0_FLAG_UNIX_SBRK
;
99 #else /* not REL_ALLOC */
100 int _crt0_startup_flags
= (_CRT0_FLAG_UNIX_SBRK
| _CRT0_FLAG_FILL_SBRK_MEMORY
);
101 #endif /* not REL_ALLOC */
102 #endif /* GNU_MALLOC */
104 #endif /* not SYSTEM_MALLOC */
105 #endif /* __DJGPP__ > 1 */
124 /* ------------------------ Mouse control ---------------------------
126 * Coordinates are in screen positions and zero based.
127 * Mouse buttons are numbered from left to right and also zero based.
130 /* This used to be in termhooks.h, but mainstream Emacs code no longer
131 uses it, and it was removed... */
132 #define NUM_MOUSE_BUTTONS (5)
134 int have_mouse
; /* 0: no, 1: enabled, -1: disabled */
135 static int mouse_visible
;
137 static int mouse_last_x
;
138 static int mouse_last_y
;
140 static int mouse_button_translate
[NUM_MOUSE_BUTTONS
];
141 static int mouse_button_count
;
148 if (have_mouse
> 0 && !mouse_visible
)
151 fprintf (termscript
, "<M_ON>");
153 int86 (0x33, ®s
, ®s
);
163 if (have_mouse
> 0 && mouse_visible
)
166 fprintf (termscript
, "<M_OFF>");
168 int86 (0x33, ®s
, ®s
);
174 mouse_setup_buttons (int n_buttons
)
178 mouse_button_count
= 3;
179 mouse_button_translate
[0] = 0; /* Left */
180 mouse_button_translate
[1] = 2; /* Middle */
181 mouse_button_translate
[2] = 1; /* Right */
183 else /* two, what else? */
185 mouse_button_count
= 2;
186 mouse_button_translate
[0] = 0;
187 mouse_button_translate
[1] = 1;
191 DEFUN ("msdos-set-mouse-buttons", Fmsdos_set_mouse_buttons
, Smsdos_set_mouse_buttons
,
192 1, 1, "NSet number of mouse buttons to: ",
193 doc
: /* Set the number of mouse buttons to use by Emacs.
194 This is useful with mice that report the number of buttons inconsistently,
195 e.g., if the number of buttons is reported as 3, but Emacs only sees 2 of
196 them. This happens with wheeled mice on Windows 9X, for example. */)
198 Lisp_Object nbuttons
;
202 CHECK_NUMBER (nbuttons
);
205 Fsignal (Qargs_out_of_range
,
206 Fcons (build_string ("only 2 or 3 mouse buttons are supported"),
207 Fcons (nbuttons
, Qnil
)));
208 mouse_setup_buttons (n
);
213 mouse_get_xy (int *x
, int *y
)
218 int86 (0x33, ®s
, ®s
);
230 fprintf (termscript
, "<M_XY=%dx%d>", x
, y
);
232 mouse_last_x
= regs
.x
.cx
= x
* 8;
233 mouse_last_y
= regs
.x
.dx
= y
* 8;
234 int86 (0x33, ®s
, ®s
);
238 mouse_pressed (b
, xp
, yp
)
243 if (b
>= mouse_button_count
)
246 regs
.x
.bx
= mouse_button_translate
[b
];
247 int86 (0x33, ®s
, ®s
);
249 *xp
= regs
.x
.cx
/ 8, *yp
= regs
.x
.dx
/ 8;
250 return (regs
.x
.bx
!= 0);
254 mouse_released (b
, xp
, yp
)
259 if (b
>= mouse_button_count
)
262 regs
.x
.bx
= mouse_button_translate
[b
];
263 int86 (0x33, ®s
, ®s
);
265 *xp
= regs
.x
.cx
/ 8, *yp
= regs
.x
.dx
/ 8;
266 return (regs
.x
.bx
!= 0);
270 mouse_button_depressed (b
, xp
, yp
)
275 if (b
>= mouse_button_count
)
278 int86 (0x33, ®s
, ®s
);
279 if ((regs
.x
.bx
& (1 << mouse_button_translate
[b
])) != 0)
289 mouse_get_pos (f
, insist
, bar_window
, part
, x
, y
, time
)
292 Lisp_Object
*bar_window
, *x
, *y
;
293 enum scroll_bar_part
*part
;
297 Lisp_Object frame
, tail
;
299 /* Clear the mouse-moved flag for every frame on this display. */
300 FOR_EACH_FRAME (tail
, frame
)
301 XFRAME (frame
)->mouse_moved
= 0;
303 *f
= SELECTED_FRAME();
305 mouse_get_xy (&ix
, &iy
);
306 *time
= event_timestamp ();
307 *x
= make_number (mouse_last_x
= ix
);
308 *y
= make_number (mouse_last_y
= iy
);
316 mouse_get_xy (&x
, &y
);
317 SELECTED_FRAME()->mouse_moved
|= (x
!= mouse_last_x
|| y
!= mouse_last_y
);
322 /* Force the mouse driver to ``forget'' about any button clicks until
325 mouse_clear_clicks (void)
329 for (b
= 0; b
< mouse_button_count
; b
++)
331 int dummy_x
, dummy_y
;
333 (void) mouse_pressed (b
, &dummy_x
, &dummy_y
);
334 (void) mouse_released (b
, &dummy_x
, &dummy_y
);
344 fprintf (termscript
, "<M_INIT>");
347 int86 (0x33, ®s
, ®s
);
349 /* Reset the mouse last press/release info. It seems that Windows
350 doesn't do that automatically when function 21h is called, which
351 causes Emacs to ``remember'' the click that switched focus to the
352 window just before Emacs was started from that window. */
353 mouse_clear_clicks ();
357 regs
.x
.dx
= 8 * (ScreenCols () - 1);
358 int86 (0x33, ®s
, ®s
);
362 regs
.x
.dx
= 8 * (ScreenRows () - 1);
363 int86 (0x33, ®s
, ®s
);
369 /* ------------------------- Screen control ----------------------
373 static int internal_terminal
= 0;
375 #ifndef HAVE_X_WINDOWS
376 extern unsigned char ScreenAttrib
;
377 static int screen_face
;
379 static int screen_size_X
;
380 static int screen_size_Y
;
381 static int screen_size
;
383 static int current_pos_X
;
384 static int current_pos_Y
;
385 static int new_pos_X
;
386 static int new_pos_Y
;
388 static void *startup_screen_buffer
;
389 static int startup_screen_size_X
;
390 static int startup_screen_size_Y
;
391 static int startup_pos_X
;
392 static int startup_pos_Y
;
393 static unsigned char startup_screen_attrib
;
395 static clock_t startup_time
;
397 static int term_setup_done
;
399 static unsigned short outside_cursor
;
401 /* Similar to the_only_frame. */
402 struct x_output the_only_x_display
;
404 /* Support for DOS/V (allows Japanese characters to be displayed on
405 standard, non-Japanese, ATs). Only supported for DJGPP v2 and later. */
407 /* Holds the address of the text-mode screen buffer. */
408 static unsigned long screen_old_address
= 0;
409 /* Segment and offset of the virtual screen. If 0, DOS/V is NOT loaded. */
410 static unsigned short screen_virtual_segment
= 0;
411 static unsigned short screen_virtual_offset
= 0;
412 /* A flag to control how to display unibyte 8-bit characters. */
413 extern int unibyte_display_via_language_environment
;
417 /* The screen colors of the curent frame, which serve as the default
418 colors for newly-created frames. */
419 static int initial_screen_colors
[2];
422 /* Update the screen from a part of relocated DOS/V screen buffer which
423 begins at OFFSET and includes COUNT characters. */
425 dosv_refresh_virtual_screen (int offset
, int count
)
429 if (offset
< 0 || count
< 0) /* paranoia; invalid values crash DOS/V */
432 regs
.h
.ah
= 0xff; /* update relocated screen */
433 regs
.x
.es
= screen_virtual_segment
;
434 regs
.x
.di
= screen_virtual_offset
+ offset
;
436 __dpmi_int (0x10, ®s
);
441 dos_direct_output (y
, x
, buf
, len
)
447 int t0
= 2 * (x
+ y
* screen_size_X
);
448 int t
= t0
+ (int) ScreenPrimary
;
453 dosmemput (buf
++, 1, t
);
457 /* This is faster. */
458 for (_farsetsel (_dos_ds
); --len
>= 0; t
+= 2, buf
++)
459 _farnspokeb (t
, *buf
);
461 if (screen_virtual_segment
)
462 dosv_refresh_virtual_screen (t0
, l0
);
467 /* Flash the screen as a substitute for BEEPs. */
471 do_visible_bell (xorattr
)
472 unsigned char xorattr
;
477 movl _ScreenPrimary,%%eax \n\
484 xorb %%al,%%gs:(%%ebx) \n\
487 jne visible_bell_1 \n\
489 jne visible_bell_3 \n\
491 movzwl %%ax,%%eax \n\
492 movzwl %%ax,%%eax \n\
493 movzwl %%ax,%%eax \n\
494 movzwl %%ax,%%eax \n\
496 jne visible_bell_2 \n\
497 jmp visible_bell_0 \n\
500 : "m" (xorattr
), "g" (screen_size
)
501 : "%eax", "%ebx", /* "%gs",*/ "%ecx", "%edx");
505 ScreenVisualBell (void)
507 /* This creates an xor-mask that will swap the default fore- and
508 background colors. */
509 do_visible_bell (((the_only_x_display
.foreground_pixel
510 ^ the_only_x_display
.background_pixel
)
515 #ifndef HAVE_X_WINDOWS
517 static int blink_bit
= -1; /* the state of the blink bit at startup */
519 /* Enable bright background colors. */
525 /* Remember the original state of the blink/bright-background bit.
526 It is stored at 0040:0065h in the BIOS data area. */
528 blink_bit
= (_farpeekb (_dos_ds
, 0x465) & 0x20) == 0x20;
532 int86 (0x10, ®s
, ®s
);
535 /* Disable bright background colors (and enable blinking) if we found
536 the video system in that state at startup. */
538 maybe_enable_blinking (void)
546 int86 (0x10, ®s
, ®s
);
550 /* Return non-zero if the system has a VGA adapter. */
557 int86 (0x10, ®s
, ®s
);
558 if (regs
.h
.al
== 0x1a && regs
.h
.bl
> 5 && regs
.h
.bl
< 13)
563 /* Set the screen dimensions so that it can show no less than
564 ROWS x COLS frame. */
567 dos_set_window_size (rows
, cols
)
571 Lisp_Object video_mode
;
572 int video_mode_value
;
575 int current_rows
= ScreenRows (), current_cols
= ScreenCols ();
577 if (*rows
== current_rows
&& *cols
== current_cols
)
581 have_vga
= vga_installed ();
583 /* If the user specified a special video mode for these dimensions,
585 sprintf (video_name
, "screen-dimensions-%dx%d", *rows
, *cols
);
586 video_mode
= XSYMBOL (Fintern_soft (build_string (video_name
),
589 if (INTEGERP (video_mode
)
590 && (video_mode_value
= XINT (video_mode
)) > 0)
592 regs
.x
.ax
= video_mode_value
;
593 int86 (0x10, ®s
, ®s
);
597 /* Must hardware-reset the mouse, or else it won't update
598 its notion of screen dimensions for some non-standard
599 video modes. This is *painfully* slow... */
601 int86 (0x33, ®s
, ®s
);
605 /* Find one of the dimensions supported by standard EGA/VGA
606 which gives us at least the required dimensions. */
615 } std_dimension
[] = {
625 while (i
< sizeof (std_dimension
) / sizeof (std_dimension
[0]))
627 if (std_dimension
[i
].need_vga
<= have_vga
628 && std_dimension
[i
].rows
>= *rows
)
630 if (std_dimension
[i
].rows
!= current_rows
631 || *cols
!= current_cols
)
632 _set_screen_lines (std_dimension
[i
].rows
);
639 #else /* not __DJGPP__ > 1 */
641 else if (*rows
<= 25)
643 if (current_rows
!= 25 || current_cols
!= 80)
646 int86 (0x10, ®s
, ®s
);
649 int86 (0x10, ®s
, ®s
);
652 int86 (0x10, ®s
, ®s
);
654 int86 (0x10, ®s
, ®s
);
657 else if (*rows
<= 50)
658 if (have_vga
&& (current_rows
!= 50 || current_cols
!= 80)
659 || *rows
<= 43 && (current_rows
!= 43 || current_cols
!= 80))
662 int86 (0x10, ®s
, ®s
);
665 int86 (0x10, ®s
, ®s
);
668 int86 (0x10, ®s
, ®s
);
671 int86 (0x10, ®s
, ®s
);
673 #endif /* not __DJGPP__ > 1 */
681 /* Tell the caller what dimensions have been REALLY set. */
682 *rows
= ScreenRows ();
683 *cols
= ScreenCols ();
685 /* Update Emacs' notion of screen dimensions. */
686 screen_size_X
= *cols
;
687 screen_size_Y
= *rows
;
688 screen_size
= *cols
* *rows
;
691 /* If the dimensions changed, the mouse highlight info is invalid. */
692 if (current_rows
!= *rows
|| current_cols
!= *cols
)
694 struct frame
*f
= SELECTED_FRAME();
695 struct display_info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
696 Lisp_Object window
= dpyinfo
->mouse_face_window
;
698 if (! NILP (window
) && XFRAME (XWINDOW (window
)->frame
) == f
)
700 dpyinfo
->mouse_face_beg_row
= dpyinfo
->mouse_face_beg_col
= -1;
701 dpyinfo
->mouse_face_end_row
= dpyinfo
->mouse_face_end_col
= -1;
702 dpyinfo
->mouse_face_window
= Qnil
;
707 /* Enable bright background colors. */
710 /* FIXME: I'm not sure the above will run at all on DOS/V. But let's
711 be defensive anyway. */
712 if (screen_virtual_segment
)
713 dosv_refresh_virtual_screen (0, *cols
* *rows
);
716 /* If we write a character in the position where the mouse is,
717 the mouse cursor may need to be refreshed. */
727 mouse_get_xy (&x
, &y
);
728 if (y
!= new_pos_Y
|| x
< new_pos_X
)
734 #define DEFAULT_CURSOR_START (-1)
735 #define DEFAULT_CURSOR_WIDTH (-1)
736 #define BOX_CURSOR_WIDTH (-32)
738 /* Set cursor to begin at scan line START_LINE in the character cell
739 and extend for WIDTH scan lines. Scan lines are counted from top
740 of the character cell, starting from zero. */
742 msdos_set_cursor_shape (struct frame
*f
, int start_line
, int width
)
745 unsigned desired_cursor
;
747 int max_line
, top_line
, bot_line
;
749 /* Avoid the costly BIOS call if F isn't the currently selected
750 frame. Allow for NULL as unconditionally meaning the selected
752 if (f
&& f
!= SELECTED_FRAME())
755 /* The character cell size in scan lines is stored at 40:85 in the
757 max_line
= _farpeekw (_dos_ds
, 0x485) - 1;
760 default: /* this relies on CGA cursor emulation being ON! */
777 if (width
== BOX_CURSOR_WIDTH
)
782 else if (start_line
!= DEFAULT_CURSOR_START
)
784 top_line
= start_line
;
785 bot_line
= top_line
- width
- 1;
787 else if (width
!= DEFAULT_CURSOR_WIDTH
)
790 bot_line
= -1 - width
;
793 top_line
= bot_line
+ 1;
797 /* [31, 0] seems to DTRT for all screen sizes. */
801 else /* WIDTH is positive */
803 if (start_line
!= DEFAULT_CURSOR_START
)
804 bot_line
= start_line
;
805 top_line
= bot_line
- (width
- 1);
808 /* If the current cursor shape is already what they want, we are
810 desired_cursor
= ((top_line
& 0x1f) << 8) | (bot_line
& 0x1f);
811 if (desired_cursor
== _farpeekw (_dos_ds
, 0x460))
815 regs
.x
.cx
= desired_cursor
;
816 __dpmi_int (0x10, ®s
);
817 #endif /* __DJGPP__ > 1 */
821 IT_set_cursor_type (struct frame
*f
, Lisp_Object cursor_type
)
823 if (EQ (cursor_type
, Qbar
))
825 /* Just BAR means the normal EGA/VGA cursor. */
826 msdos_set_cursor_shape (f
, DEFAULT_CURSOR_START
, DEFAULT_CURSOR_WIDTH
);
828 else if (CONSP (cursor_type
) && EQ (XCAR (cursor_type
), Qbar
))
830 Lisp_Object bar_parms
= XCDR (cursor_type
);
833 if (INTEGERP (bar_parms
))
835 /* Feature: negative WIDTH means cursor at the top
836 of the character cell, zero means invisible cursor. */
837 width
= XINT (bar_parms
);
838 msdos_set_cursor_shape (f
, width
>= 0 ? DEFAULT_CURSOR_START
: 0,
841 else if (CONSP (bar_parms
)
842 && INTEGERP (XCAR (bar_parms
))
843 && INTEGERP (XCDR (bar_parms
)))
845 int start_line
= XINT (XCDR (bar_parms
));
847 width
= XINT (XCAR (bar_parms
));
848 msdos_set_cursor_shape (f
, start_line
, width
);
852 /* Treat anything unknown as "box cursor". This includes nil, so
853 that a frame which doesn't specify a cursor type gets a box,
854 which is the default in Emacs. */
855 msdos_set_cursor_shape (f
, 0, BOX_CURSOR_WIDTH
);
868 union REGS inregs
, outregs
;
871 intdos (&inregs
, &outregs
);
875 /* Given a face id FACE, extract the face parameters to be used for
876 display until the face changes. The face parameters (actually, its
877 color) are used to construct the video attribute byte for each
878 glyph during the construction of the buffer that is then blitted to
881 IT_set_face (int face
)
883 struct frame
*sf
= SELECTED_FRAME();
884 struct face
*fp
= FACE_FROM_ID (sf
, face
);
885 struct face
*dfp
= FACE_FROM_ID (sf
, DEFAULT_FACE_ID
);
886 unsigned long fg
, bg
, dflt_fg
, dflt_bg
;
891 /* The default face for the frame should always be realized and
899 dflt_fg
= dfp
->foreground
;
900 dflt_bg
= dfp
->background
;
902 /* Don't use invalid colors. In particular, FACE_TTY_DEFAULT_* colors
903 mean use the colors of the default face. Note that we assume all
904 16 colors to be available for the background, since Emacs switches
905 on this mode (and loses the blinking attribute) at startup. */
906 if (fg
== FACE_TTY_DEFAULT_COLOR
|| fg
== FACE_TTY_DEFAULT_FG_COLOR
)
907 fg
= FRAME_FOREGROUND_PIXEL (sf
);
908 else if (fg
== FACE_TTY_DEFAULT_BG_COLOR
)
909 fg
= FRAME_BACKGROUND_PIXEL (sf
);
910 if (bg
== FACE_TTY_DEFAULT_COLOR
|| bg
== FACE_TTY_DEFAULT_BG_COLOR
)
911 bg
= FRAME_BACKGROUND_PIXEL (sf
);
912 else if (bg
== FACE_TTY_DEFAULT_FG_COLOR
)
913 bg
= FRAME_FOREGROUND_PIXEL (sf
);
915 /* Make sure highlighted lines really stand out, come what may. */
916 if (fp
->tty_reverse_p
&& (fg
== dflt_fg
&& bg
== dflt_bg
))
918 unsigned long tem
= fg
;
923 /* If the user requested inverse video, obey. */
926 unsigned long tem2
= fg
;
932 fprintf (termscript
, "<FACE %d: %d/%d[FG:%d/BG:%d]>", face
,
933 fp
->foreground
, fp
->background
, fg
, bg
);
934 if (fg
>= 0 && fg
< 16)
936 ScreenAttrib
&= 0xf0;
939 if (bg
>= 0 && bg
< 16)
941 ScreenAttrib
&= 0x0f;
942 ScreenAttrib
|= ((bg
& 0x0f) << 4);
946 Lisp_Object Vdos_unsupported_char_glyph
;
949 IT_write_glyphs (struct glyph
*str
, int str_len
)
951 unsigned char *screen_buf
, *screen_bp
, *screen_buf_end
, *bp
;
952 int unsupported_face
= FAST_GLYPH_FACE (Vdos_unsupported_char_glyph
);
953 unsigned unsupported_char
= FAST_GLYPH_CHAR (Vdos_unsupported_char_glyph
);
954 int offset
= 2 * (new_pos_X
+ screen_size_X
* new_pos_Y
);
955 register int sl
= str_len
;
956 register int tlen
= GLYPH_TABLE_LENGTH
;
957 register Lisp_Object
*tbase
= GLYPH_TABLE_BASE
;
959 /* If terminal_coding does any conversion, use it, otherwise use
960 safe_terminal_coding. We can't use CODING_REQUIRE_ENCODING here
961 because it always returns 1 if terminal_coding.src_multibyte is 1. */
962 struct coding_system
*coding
=
963 (terminal_coding
.common_flags
& CODING_REQUIRE_ENCODING_MASK
965 : &safe_terminal_coding
);
968 /* Do we need to consider conversion of unibyte characters to
970 int convert_unibyte_characters
971 = (NILP (current_buffer
->enable_multibyte_characters
)
972 && unibyte_display_via_language_environment
);
974 unsigned char conversion_buffer
[256];
975 int conversion_buffer_size
= sizeof conversion_buffer
;
977 if (str_len
<= 0) return;
979 screen_buf
= screen_bp
= alloca (str_len
* 2);
980 screen_buf_end
= screen_buf
+ str_len
* 2;
981 sf
= SELECTED_FRAME();
983 /* Since faces get cached and uncached behind our back, we can't
984 rely on their indices in the cache being consistent across
985 invocations. So always reset the screen face to the default
986 face of the frame, before writing glyphs, and let the glyphs
987 set the right face if it's different from the default. */
988 IT_set_face (DEFAULT_FACE_ID
);
990 /* The mode bit CODING_MODE_LAST_BLOCK should be set to 1 only at
992 terminal_coding
.mode
&= ~CODING_MODE_LAST_BLOCK
;
995 int cf
, chlen
, enclen
;
996 unsigned char workbuf
[MAX_MULTIBYTE_LENGTH
], *buf
;
999 /* Glyphs with GLYPH_MASK_PADDING bit set are actually there
1000 only for the redisplay code to know how many columns does
1001 this character occupy on the screen. Skip padding glyphs. */
1002 if (CHAR_GLYPH_PADDING_P (*str
))
1009 register GLYPH g
= GLYPH_FROM_CHAR_GLYPH (*str
);
1010 int glyph_not_in_table
= 0;
1012 /* If g is negative, it means we have a multibyte character
1013 in *str. That's what GLYPH_FROM_CHAR_GLYPH returns for
1014 multibyte characters. */
1015 if (g
< 0 || g
>= tlen
)
1017 /* This glyph doesn't have an entry in Vglyph_table. */
1019 glyph_not_in_table
= 1;
1023 /* This glyph has an entry in Vglyph_table, so process
1024 any aliases before testing for simpleness. */
1025 GLYPH_FOLLOW_ALIASES (tbase
, tlen
, g
);
1026 ch
= FAST_GLYPH_CHAR (g
);
1029 /* Convert the character code to multibyte, if they
1030 requested display via language environment. We only want
1031 to convert unibyte characters to multibyte in unibyte
1032 buffers! Otherwise, the 8-bit value in CH came from the
1033 display table set up to display foreign characters. */
1034 if (SINGLE_BYTE_CHAR_P (ch
) && convert_unibyte_characters
1036 || (ch
>= 0200 && !NILP (Vnonascii_translation_table
))))
1037 ch
= unibyte_char_to_multibyte (ch
);
1039 /* Invalid characters are displayed with a special glyph. */
1040 if (! CHAR_VALID_P (ch
, 0))
1042 g
= !NILP (Vdos_unsupported_char_glyph
)
1043 ? Vdos_unsupported_char_glyph
1044 : MAKE_GLYPH (sf
, '\177', GLYPH_FACE (sf
, g
));
1045 ch
= FAST_GLYPH_CHAR (g
);
1048 /* If the face of this glyph is different from the current
1049 screen face, update the screen attribute byte. */
1051 if (cf
!= screen_face
)
1052 IT_set_face (cf
); /* handles invalid faces gracefully */
1054 if (glyph_not_in_table
|| GLYPH_SIMPLE_P (tbase
, tlen
, g
))
1056 /* We generate the multi-byte form of CH in WORKBUF. */
1057 chlen
= CHAR_STRING (ch
, workbuf
);
1062 /* We have a string in Vglyph_table. */
1063 chlen
= GLYPH_LENGTH (tbase
, g
);
1064 buf
= GLYPH_STRING (tbase
, g
);
1067 /* If the character is not multibyte, don't bother converting it. */
1070 *conversion_buffer
= (unsigned char)ch
;
1076 coding
->src_multibyte
= 1;
1077 encode_coding (coding
, buf
, conversion_buffer
, chlen
,
1078 conversion_buffer_size
);
1079 chlen
-= coding
->consumed
;
1080 enclen
= coding
->produced
;
1082 /* Replace glyph codes that cannot be converted by
1083 terminal_coding with Vdos_unsupported_char_glyph. */
1084 if (*conversion_buffer
== '?')
1086 unsigned char *cbp
= conversion_buffer
;
1088 while (cbp
< conversion_buffer
+ enclen
&& *cbp
== '?')
1089 *cbp
++ = unsupported_char
;
1090 if (unsupported_face
!= screen_face
)
1091 IT_set_face (unsupported_face
);
1095 if (enclen
+ chlen
> screen_buf_end
- screen_bp
)
1097 /* The allocated buffer for screen writes is too small.
1098 Flush it and loop again without incrementing STR, so
1099 that the next loop will begin with the same glyph. */
1100 int nbytes
= screen_bp
- screen_buf
;
1103 dosmemput (screen_buf
, nbytes
, (int)ScreenPrimary
+ offset
);
1104 if (screen_virtual_segment
)
1105 dosv_refresh_virtual_screen (offset
, nbytes
/ 2);
1106 new_pos_X
+= nbytes
/ 2;
1109 /* Prepare to reuse the same buffer again. */
1110 screen_bp
= screen_buf
;
1114 /* There's enough place in the allocated buffer to add
1115 the encoding of this glyph. */
1117 /* First, copy the encoded bytes. */
1118 for (bp
= conversion_buffer
; enclen
--; bp
++)
1120 *screen_bp
++ = (unsigned char)*bp
;
1121 *screen_bp
++ = ScreenAttrib
;
1123 fputc (*bp
, termscript
);
1126 /* Now copy the bytes not consumed by the encoding. */
1129 buf
+= coding
->consumed
;
1133 fputc (*buf
, termscript
);
1134 *screen_bp
++ = (unsigned char)*buf
++;
1135 *screen_bp
++ = ScreenAttrib
;
1139 /* Update STR and its remaining length. */
1146 /* Dump whatever is left in the screen buffer. */
1148 dosmemput (screen_buf
, screen_bp
- screen_buf
, (int)ScreenPrimary
+ offset
);
1149 if (screen_virtual_segment
)
1150 dosv_refresh_virtual_screen (offset
, (screen_bp
- screen_buf
) / 2);
1151 new_pos_X
+= (screen_bp
- screen_buf
) / 2;
1153 /* We may have to output some codes to terminate the writing. */
1154 if (CODING_REQUIRE_FLUSHING (coding
))
1156 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
1157 encode_coding (coding
, "", conversion_buffer
, 0, conversion_buffer_size
);
1158 if (coding
->produced
> 0)
1160 screen_buf
= alloca (coding
->produced
* 2);
1161 for (screen_bp
= screen_buf
, bp
= conversion_buffer
;
1162 coding
->produced
--; bp
++)
1164 *screen_bp
++ = (unsigned char)*bp
;
1165 *screen_bp
++ = ScreenAttrib
;
1167 fputc (*bp
, termscript
);
1169 offset
+= screen_bp
- screen_buf
;
1171 dosmemput (screen_buf
, screen_bp
- screen_buf
,
1172 (int)ScreenPrimary
+ offset
);
1173 if (screen_virtual_segment
)
1174 dosv_refresh_virtual_screen (offset
, (screen_bp
- screen_buf
) / 2);
1175 new_pos_X
+= (screen_bp
- screen_buf
) / 2;
1180 /************************************************************************
1181 Mouse Highlight (and friends..)
1182 ************************************************************************/
1184 /* This is used for debugging, to turn off note_mouse_highlight. */
1185 int disable_mouse_highlight
;
1187 /* If non-nil, dos_rawgetc generates an event to display that string.
1188 (The display is done in keyboard.c:read_char, by calling
1190 static Lisp_Object help_echo
;
1191 static Lisp_Object previous_help_echo
; /* a helper temporary variable */
1193 /* These record the window, the object and the position where the help
1194 echo string was generated. */
1195 static Lisp_Object help_echo_window
;
1196 static Lisp_Object help_echo_object
;
1197 static int help_echo_pos
;
1199 /* Non-zero means automatically select any window when the mouse
1200 cursor moves into it. */
1201 int x_autoselect_window_p
;
1203 static int mouse_preempted
= 0; /* non-zero when XMenu gobbles mouse events */
1205 /* Set the mouse pointer shape according to whether it is in the
1206 area where the mouse highlight is in effect. */
1208 IT_set_mouse_pointer (int mode
)
1210 /* A no-op for now. DOS text-mode mouse pointer doesn't offer too
1211 many possibilities to change its shape, and the available
1212 functionality pretty much sucks (e.g., almost every reasonable
1213 shape will conceal the character it is on). Since the color of
1214 the pointer changes in the highlighted area, it is not clear to
1215 me whether anything else is required, anyway. */
1218 /* Display the active region described by mouse_face_*
1219 in its mouse-face if HL > 0, in its normal face if HL = 0. */
1221 show_mouse_face (struct display_info
*dpyinfo
, int hl
)
1223 struct window
*w
= XWINDOW (dpyinfo
->mouse_face_window
);
1224 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
1229 /* If window is in the process of being destroyed, don't bother
1231 if (w
->current_matrix
== NULL
)
1232 goto set_cursor_shape
;
1234 /* Recognize when we are called to operate on rows that don't exist
1235 anymore. This can happen when a window is split. */
1236 if (dpyinfo
->mouse_face_end_row
>= w
->current_matrix
->nrows
)
1237 goto set_cursor_shape
;
1239 /* There's no sense to do anything if the mouse face isn't realized. */
1242 fp
= FACE_FROM_ID (SELECTED_FRAME(), dpyinfo
->mouse_face_face_id
);
1244 goto set_cursor_shape
;
1247 /* Note that mouse_face_beg_row etc. are window relative. */
1248 for (i
= dpyinfo
->mouse_face_beg_row
;
1249 i
<= dpyinfo
->mouse_face_end_row
;
1252 int start_hpos
, end_hpos
;
1253 struct glyph_row
*row
= MATRIX_ROW (w
->current_matrix
, i
);
1255 /* Don't do anything if row doesn't have valid contents. */
1256 if (!row
->enabled_p
)
1259 /* For all but the first row, the highlight starts at column 0. */
1260 if (i
== dpyinfo
->mouse_face_beg_row
)
1261 start_hpos
= dpyinfo
->mouse_face_beg_col
;
1265 if (i
== dpyinfo
->mouse_face_end_row
)
1266 end_hpos
= dpyinfo
->mouse_face_end_col
;
1268 end_hpos
= row
->used
[TEXT_AREA
];
1270 if (end_hpos
<= start_hpos
)
1272 /* Record that some glyphs of this row are displayed in
1274 row
->mouse_face_p
= hl
> 0;
1277 int vpos
= row
->y
+ WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w
);
1278 int kstart
= start_hpos
+ WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w
);
1279 int nglyphs
= end_hpos
- start_hpos
;
1280 int offset
= ScreenPrimary
+ 2*(vpos
*screen_size_X
+ kstart
) + 1;
1281 int start_offset
= offset
;
1284 fprintf (termscript
, "\n<MH+ %d-%d:%d>",
1285 kstart
, kstart
+ nglyphs
- 1, vpos
);
1288 IT_set_face (dpyinfo
->mouse_face_face_id
);
1289 /* Since we are going to change only the _colors_ of the
1290 displayed text, there's no need to go through all the
1291 pain of generating and encoding the text from the glyphs.
1292 Instead, we simply poke the attribute byte of each
1293 affected position in video memory with the colors
1294 computed by IT_set_face! */
1295 _farsetsel (_dos_ds
);
1298 _farnspokeb (offset
, ScreenAttrib
);
1301 if (screen_virtual_segment
)
1302 dosv_refresh_virtual_screen (start_offset
, end_hpos
- start_hpos
);
1307 /* We are removing a previously-drawn mouse highlight. The
1308 safest way to do so is to redraw the glyphs anew, since
1309 all kinds of faces and display tables could have changed
1311 int nglyphs
= end_hpos
- start_hpos
;
1312 int save_x
= new_pos_X
, save_y
= new_pos_Y
;
1314 if (end_hpos
>= row
->used
[TEXT_AREA
])
1315 nglyphs
= row
->used
[TEXT_AREA
] - start_hpos
;
1317 /* IT_write_glyphs writes at cursor position, so we need to
1318 temporarily move cursor coordinates to the beginning of
1319 the highlight region. */
1320 new_pos_X
= start_hpos
+ WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w
);
1321 new_pos_Y
= row
->y
+ WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w
);
1324 fprintf (termscript
, "<MH- %d-%d:%d>",
1325 new_pos_X
, new_pos_X
+ nglyphs
- 1, new_pos_Y
);
1326 IT_write_glyphs (row
->glyphs
[TEXT_AREA
] + start_hpos
, nglyphs
);
1328 fputs ("\n", termscript
);
1336 /* Change the mouse pointer shape. */
1337 IT_set_mouse_pointer (hl
);
1340 /* Clear out the mouse-highlighted active region.
1341 Redraw it un-highlighted first. */
1343 clear_mouse_face (struct display_info
*dpyinfo
)
1345 if (! NILP (dpyinfo
->mouse_face_window
))
1346 show_mouse_face (dpyinfo
, 0);
1348 dpyinfo
->mouse_face_beg_row
= dpyinfo
->mouse_face_beg_col
= -1;
1349 dpyinfo
->mouse_face_end_row
= dpyinfo
->mouse_face_end_col
= -1;
1350 dpyinfo
->mouse_face_window
= Qnil
;
1353 /* Find the glyph matrix position of buffer position POS in window W.
1354 *HPOS and *VPOS are set to the positions found. W's current glyphs
1355 must be up to date. If POS is above window start return (0, 0).
1356 If POS is after end of W, return end of last line in W. */
1358 fast_find_position (struct window
*w
, int pos
, int *hpos
, int *vpos
)
1362 int maybe_next_line_p
= 0;
1363 int line_start_position
;
1364 int yb
= window_text_bottom_y (w
);
1365 struct glyph_row
*row
= MATRIX_ROW (w
->current_matrix
, 0);
1366 struct glyph_row
*best_row
= row
;
1370 if (row
->used
[TEXT_AREA
])
1371 line_start_position
= row
->glyphs
[TEXT_AREA
]->charpos
;
1373 line_start_position
= 0;
1375 if (line_start_position
> pos
)
1377 /* If the position sought is the end of the buffer,
1378 don't include the blank lines at the bottom of the window. */
1379 else if (line_start_position
== pos
1380 && pos
== BUF_ZV (XBUFFER (w
->buffer
)))
1382 maybe_next_line_p
= 1;
1385 else if (line_start_position
> 0)
1388 /* Don't overstep the last matrix row, lest we get into the
1389 never-never land... */
1390 if (row
->y
+ 1 >= yb
)
1396 /* Find the right column within BEST_ROW. */
1399 for (i
= 0; i
< row
->used
[TEXT_AREA
]; i
++)
1401 struct glyph
*glyph
= row
->glyphs
[TEXT_AREA
] + i
;
1404 charpos
= glyph
->charpos
;
1411 else if (charpos
> pos
)
1413 else if (charpos
> 0)
1417 /* If we're looking for the end of the buffer,
1418 and we didn't find it in the line we scanned,
1419 use the start of the following line. */
1420 if (maybe_next_line_p
)
1427 *hpos
= lastcol
+ 1;
1431 /* Take proper action when mouse has moved to the mode or top line of
1432 window W, x-position X. MODE_LINE_P non-zero means mouse is on the
1433 mode line. X is relative to the start of the text display area of
1434 W, so the width of fringes and scroll bars must be subtracted
1435 to get a position relative to the start of the mode line. */
1437 IT_note_mode_line_highlight (struct window
*w
, int x
, int mode_line_p
)
1439 struct frame
*f
= XFRAME (w
->frame
);
1440 struct display_info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
1441 struct glyph_row
*row
;
1444 row
= MATRIX_MODE_LINE_ROW (w
->current_matrix
);
1446 row
= MATRIX_HEADER_LINE_ROW (w
->current_matrix
);
1450 extern Lisp_Object Qhelp_echo
;
1451 struct glyph
*glyph
, *end
;
1452 Lisp_Object help
, map
;
1454 /* Find the glyph under X. */
1455 glyph
= row
->glyphs
[TEXT_AREA
]
1456 + x
- FRAME_LEFT_SCROLL_BAR_WIDTH (f
) * CANON_X_UNIT (f
);
1457 end
= glyph
+ row
->used
[TEXT_AREA
];
1459 && STRINGP (glyph
->object
)
1460 && XSTRING (glyph
->object
)->intervals
1461 && glyph
->charpos
>= 0
1462 && glyph
->charpos
< XSTRING (glyph
->object
)->size
)
1464 /* If we're on a string with `help-echo' text property,
1465 arrange for the help to be displayed. This is done by
1466 setting the global variable help_echo to the help string. */
1467 help
= Fget_text_property (make_number (glyph
->charpos
),
1468 Qhelp_echo
, glyph
->object
);
1472 XSETWINDOW (help_echo_window
, w
);
1473 help_echo_object
= glyph
->object
;
1474 help_echo_pos
= glyph
->charpos
;
1480 /* Take proper action when the mouse has moved to position X, Y on
1481 frame F as regards highlighting characters that have mouse-face
1482 properties. Also de-highlighting chars where the mouse was before.
1483 X and Y can be negative or out of range. */
1485 IT_note_mouse_highlight (struct frame
*f
, int x
, int y
)
1487 struct display_info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
1492 /* When a menu is active, don't highlight because this looks odd. */
1493 if (mouse_preempted
)
1496 if (disable_mouse_highlight
1497 || !f
->glyphs_initialized_p
)
1500 dpyinfo
->mouse_face_mouse_x
= x
;
1501 dpyinfo
->mouse_face_mouse_y
= y
;
1502 dpyinfo
->mouse_face_mouse_frame
= f
;
1504 if (dpyinfo
->mouse_face_defer
)
1509 dpyinfo
->mouse_face_deferred_gc
= 1;
1513 /* Which window is that in? */
1514 window
= window_from_coordinates (f
, x
, y
, &portion
, 0);
1516 /* If we were displaying active text in another window, clear that. */
1517 if (! EQ (window
, dpyinfo
->mouse_face_window
))
1518 clear_mouse_face (dpyinfo
);
1520 /* Not on a window -> return. */
1521 if (!WINDOWP (window
))
1524 /* Convert to window-relative coordinates. */
1525 w
= XWINDOW (window
);
1526 x
-= WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w
);
1527 y
-= WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w
);
1529 if (portion
== 1 || portion
== 3)
1531 /* Mouse is on the mode or top line. */
1532 IT_note_mode_line_highlight (w
, x
, portion
== 1);
1536 IT_set_mouse_pointer (0);
1538 /* Are we in a window whose display is up to date?
1539 And verify the buffer's text has not changed. */
1540 if (/* Within text portion of the window. */
1542 && EQ (w
->window_end_valid
, w
->buffer
)
1543 && XFASTINT (w
->last_modified
) == BUF_MODIFF (XBUFFER (w
->buffer
))
1544 && (XFASTINT (w
->last_overlay_modified
)
1545 == BUF_OVERLAY_MODIFF (XBUFFER (w
->buffer
))))
1548 struct glyph_row
*row
;
1549 struct glyph
*glyph
;
1550 int nrows
= w
->current_matrix
->nrows
;
1552 /* Find the glyph under X/Y. */
1554 if (y
>= 0 && y
< nrows
)
1556 row
= MATRIX_ROW (w
->current_matrix
, y
);
1557 /* Give up if some row before the one we are looking for is
1559 for (i
= 0; i
<= y
; i
++)
1560 if (!MATRIX_ROW (w
->current_matrix
, i
)->enabled_p
)
1562 if (i
> y
/* all rows upto and including the one at Y are enabled */
1563 && row
->displays_text_p
1564 && x
< window_box_width (w
, TEXT_AREA
))
1566 glyph
= row
->glyphs
[TEXT_AREA
];
1567 if (x
>= row
->used
[TEXT_AREA
])
1572 if (!BUFFERP (glyph
->object
))
1578 /* Clear mouse face if X/Y not over text. */
1581 clear_mouse_face (dpyinfo
);
1585 if (!BUFFERP (glyph
->object
))
1587 pos
= glyph
->charpos
;
1589 /* Check for mouse-face and help-echo. */
1591 extern Lisp_Object Qmouse_face
;
1592 Lisp_Object mouse_face
, overlay
, position
;
1593 Lisp_Object
*overlay_vec
;
1595 struct buffer
*obuf
;
1598 /* If we get an out-of-range value, return now; avoid an error. */
1599 if (pos
> BUF_Z (XBUFFER (w
->buffer
)))
1602 /* Make the window's buffer temporarily current for
1603 overlays_at and compute_char_face. */
1604 obuf
= current_buffer
;
1605 current_buffer
= XBUFFER (w
->buffer
);
1611 /* Is this char mouse-active or does it have help-echo? */
1612 XSETINT (position
, pos
);
1614 /* Put all the overlays we want in a vector in overlay_vec.
1615 Store the length in len. If there are more than 10, make
1616 enough space for all, and try again. */
1618 overlay_vec
= (Lisp_Object
*) alloca (len
* sizeof (Lisp_Object
));
1619 noverlays
= overlays_at (pos
, 0, &overlay_vec
, &len
, NULL
, NULL
, 0);
1620 if (noverlays
> len
)
1623 overlay_vec
= (Lisp_Object
*) alloca (len
* sizeof (Lisp_Object
));
1624 noverlays
= overlays_at (pos
,
1625 0, &overlay_vec
, &len
, NULL
, NULL
, 0);
1628 /* Sort overlays into increasing priority order. */
1629 noverlays
= sort_overlays (overlay_vec
, noverlays
, w
);
1631 /* Check mouse-face highlighting. */
1632 if (! (EQ (window
, dpyinfo
->mouse_face_window
)
1633 && y
>= dpyinfo
->mouse_face_beg_row
1634 && y
<= dpyinfo
->mouse_face_end_row
1635 && (y
> dpyinfo
->mouse_face_beg_row
1636 || x
>= dpyinfo
->mouse_face_beg_col
)
1637 && (y
< dpyinfo
->mouse_face_end_row
1638 || x
< dpyinfo
->mouse_face_end_col
1639 || dpyinfo
->mouse_face_past_end
)))
1641 /* Clear the display of the old active region, if any. */
1642 clear_mouse_face (dpyinfo
);
1644 /* Find highest priority overlay that has a mouse-face prop. */
1646 for (i
= noverlays
- 1; i
>= 0; --i
)
1648 mouse_face
= Foverlay_get (overlay_vec
[i
], Qmouse_face
);
1649 if (!NILP (mouse_face
))
1651 overlay
= overlay_vec
[i
];
1656 /* If no overlay applies, get a text property. */
1658 mouse_face
= Fget_text_property (position
, Qmouse_face
,
1661 /* Handle the overlay case. */
1662 if (! NILP (overlay
))
1664 /* Find the range of text around this char that
1665 should be active. */
1666 Lisp_Object before
, after
;
1669 before
= Foverlay_start (overlay
);
1670 after
= Foverlay_end (overlay
);
1671 /* Record this as the current active region. */
1672 fast_find_position (w
, XFASTINT (before
),
1673 &dpyinfo
->mouse_face_beg_col
,
1674 &dpyinfo
->mouse_face_beg_row
);
1675 dpyinfo
->mouse_face_past_end
1676 = !fast_find_position (w
, XFASTINT (after
),
1677 &dpyinfo
->mouse_face_end_col
,
1678 &dpyinfo
->mouse_face_end_row
);
1679 dpyinfo
->mouse_face_window
= window
;
1680 dpyinfo
->mouse_face_face_id
1681 = face_at_buffer_position (w
, pos
, 0, 0,
1682 &ignore
, pos
+ 1, 1);
1684 /* Display it as active. */
1685 show_mouse_face (dpyinfo
, 1);
1687 /* Handle the text property case. */
1688 else if (! NILP (mouse_face
))
1690 /* Find the range of text around this char that
1691 should be active. */
1692 Lisp_Object before
, after
, beginning
, end
;
1695 beginning
= Fmarker_position (w
->start
);
1696 XSETINT (end
, (BUF_Z (XBUFFER (w
->buffer
))
1697 - XFASTINT (w
->window_end_pos
)));
1699 = Fprevious_single_property_change (make_number (pos
+ 1),
1701 w
->buffer
, beginning
);
1703 = Fnext_single_property_change (position
, Qmouse_face
,
1705 /* Record this as the current active region. */
1706 fast_find_position (w
, XFASTINT (before
),
1707 &dpyinfo
->mouse_face_beg_col
,
1708 &dpyinfo
->mouse_face_beg_row
);
1709 dpyinfo
->mouse_face_past_end
1710 = !fast_find_position (w
, XFASTINT (after
),
1711 &dpyinfo
->mouse_face_end_col
,
1712 &dpyinfo
->mouse_face_end_row
);
1713 dpyinfo
->mouse_face_window
= window
;
1714 dpyinfo
->mouse_face_face_id
1715 = face_at_buffer_position (w
, pos
, 0, 0,
1716 &ignore
, pos
+ 1, 1);
1718 /* Display it as active. */
1719 show_mouse_face (dpyinfo
, 1);
1723 /* Look for a `help-echo' property. */
1726 extern Lisp_Object Qhelp_echo
;
1728 /* Check overlays first. */
1730 for (i
= noverlays
- 1; i
>= 0 && NILP (help
); --i
)
1732 overlay
= overlay_vec
[i
];
1733 help
= Foverlay_get (overlay
, Qhelp_echo
);
1739 help_echo_window
= window
;
1740 help_echo_object
= overlay
;
1741 help_echo_pos
= pos
;
1743 /* Try text properties. */
1744 else if (NILP (help
)
1745 && ((STRINGP (glyph
->object
)
1746 && glyph
->charpos
>= 0
1747 && glyph
->charpos
< XSTRING (glyph
->object
)->size
)
1748 || (BUFFERP (glyph
->object
)
1749 && glyph
->charpos
>= BEGV
1750 && glyph
->charpos
< ZV
)))
1752 help
= Fget_text_property (make_number (glyph
->charpos
),
1753 Qhelp_echo
, glyph
->object
);
1757 help_echo_window
= window
;
1758 help_echo_object
= glyph
->object
;
1759 help_echo_pos
= glyph
->charpos
;
1766 current_buffer
= obuf
;
1772 IT_clear_end_of_line (int first_unused
)
1776 int offset
= 2 * (new_pos_X
+ screen_size_X
* new_pos_Y
);
1777 extern int fatal_error_in_progress
;
1779 if (new_pos_X
>= first_unused
|| fatal_error_in_progress
)
1783 i
= (j
= first_unused
- new_pos_X
) * 2;
1785 fprintf (termscript
, "<CLR:EOL[%d..%d)>", new_pos_X
, first_unused
);
1786 spaces
= sp
= alloca (i
);
1791 *sp
++ = ScreenAttrib
;
1795 dosmemput (spaces
, i
, (int)ScreenPrimary
+ offset
);
1796 if (screen_virtual_segment
)
1797 dosv_refresh_virtual_screen (offset
, i
/ 2);
1799 /* clear_end_of_line_raw on term.c leaves the cursor at first_unused.
1800 Let's follow their lead, in case someone relies on this. */
1801 new_pos_X
= first_unused
;
1805 IT_clear_screen (void)
1808 fprintf (termscript
, "<CLR:SCR>");
1809 /* We are sometimes called (from clear_garbaged_frames) when a new
1810 frame is being created, but its faces are not yet realized. In
1811 such a case we cannot call IT_set_face, since it will fail to find
1812 any valid faces and will abort. Instead, use the initial screen
1813 colors; that should mimic what a Unix tty does, which simply clears
1814 the screen with whatever default colors are in use. */
1815 if (FACE_FROM_ID (SELECTED_FRAME (), DEFAULT_FACE_ID
) == NULL
)
1816 ScreenAttrib
= (initial_screen_colors
[0] << 4) | initial_screen_colors
[1];
1821 if (screen_virtual_segment
)
1822 dosv_refresh_virtual_screen (0, screen_size
);
1823 new_pos_X
= new_pos_Y
= 0;
1827 IT_clear_to_end (void)
1830 fprintf (termscript
, "<CLR:EOS>");
1832 while (new_pos_Y
< screen_size_Y
) {
1834 IT_clear_end_of_line (screen_size_X
);
1840 IT_cursor_to (int y
, int x
)
1843 fprintf (termscript
, "\n<XY=%dx%d>", x
, y
);
1848 static int cursor_cleared
;
1851 IT_display_cursor (int on
)
1853 if (on
&& cursor_cleared
)
1855 ScreenSetCursor (current_pos_Y
, current_pos_X
);
1858 else if (!on
&& !cursor_cleared
)
1860 ScreenSetCursor (-1, -1);
1865 /* Emacs calls cursor-movement functions a lot when it updates the
1866 display (probably a legacy of old terminals where you cannot
1867 update a screen line without first moving the cursor there).
1868 However, cursor movement is expensive on MSDOS (it calls a slow
1869 BIOS function and requires 2 mode switches), while actual screen
1870 updates access the video memory directly and don't depend on
1871 cursor position. To avoid slowing down the redisplay, we cheat:
1872 all functions that move the cursor only set internal variables
1873 which record the cursor position, whereas the cursor is only
1874 moved to its final position whenever screen update is complete.
1876 `IT_cmgoto' is called from the keyboard reading loop and when the
1877 frame update is complete. This means that we are ready for user
1878 input, so we update the cursor position to show where the point is,
1879 and also make the mouse pointer visible.
1881 Special treatment is required when the cursor is in the echo area,
1882 to put the cursor at the end of the text displayed there. */
1885 IT_cmgoto (FRAME_PTR f
)
1887 /* Only set the cursor to where it should be if the display is
1888 already in sync with the window contents. */
1889 int update_cursor_pos
= 1; /* MODIFF == unchanged_modified; */
1891 /* FIXME: This needs to be rewritten for the new redisplay, or
1894 static int previous_pos_X
= -1;
1896 update_cursor_pos
= 1; /* temporary!!! */
1898 /* If the display is in sync, forget any previous knowledge about
1899 cursor position. This is primarily for unexpected events like
1900 C-g in the minibuffer. */
1901 if (update_cursor_pos
&& previous_pos_X
>= 0)
1902 previous_pos_X
= -1;
1903 /* If we are in the echo area, put the cursor at the
1904 end of the echo area message. */
1905 if (!update_cursor_pos
1906 && XFASTINT (XWINDOW (FRAME_MINIBUF_WINDOW (f
))->top
) <= new_pos_Y
)
1908 int tem_X
= current_pos_X
, dummy
;
1910 if (echo_area_glyphs
)
1912 tem_X
= echo_area_glyphs_length
;
1913 /* Save current cursor position, to be restored after the
1914 echo area message is erased. Only remember one level
1915 of previous cursor position. */
1916 if (previous_pos_X
== -1)
1917 ScreenGetCursor (&dummy
, &previous_pos_X
);
1919 else if (previous_pos_X
>= 0)
1921 /* We wind up here after the echo area message is erased.
1922 Restore the cursor position we remembered above. */
1923 tem_X
= previous_pos_X
;
1924 previous_pos_X
= -1;
1927 if (current_pos_X
!= tem_X
)
1930 update_cursor_pos
= 1;
1935 if (update_cursor_pos
1936 && (current_pos_X
!= new_pos_X
|| current_pos_Y
!= new_pos_Y
))
1938 ScreenSetCursor (current_pos_Y
= new_pos_Y
, current_pos_X
= new_pos_X
);
1940 fprintf (termscript
, "\n<CURSOR:%dx%d>", current_pos_X
, current_pos_Y
);
1943 /* Maybe cursor is invisible, so make it visible. */
1944 IT_display_cursor (1);
1946 /* Mouse pointer should be always visible if we are waiting for
1953 IT_update_begin (struct frame
*f
)
1955 struct display_info
*display_info
= FRAME_X_DISPLAY_INFO (f
);
1956 struct frame
*mouse_face_frame
= display_info
->mouse_face_mouse_frame
;
1960 if (f
&& f
== mouse_face_frame
)
1962 /* Don't do highlighting for mouse motion during the update. */
1963 display_info
->mouse_face_defer
= 1;
1965 /* If F needs to be redrawn, simply forget about any prior mouse
1967 if (FRAME_GARBAGED_P (f
))
1968 display_info
->mouse_face_window
= Qnil
;
1970 /* Can we tell that this update does not affect the window
1971 where the mouse highlight is? If so, no need to turn off.
1972 Likewise, don't do anything if none of the enabled rows
1973 contains glyphs highlighted in mouse face. */
1974 if (!NILP (display_info
->mouse_face_window
)
1975 && WINDOWP (display_info
->mouse_face_window
))
1977 struct window
*w
= XWINDOW (display_info
->mouse_face_window
);
1980 /* If the mouse highlight is in the window that was deleted
1981 (e.g., if it was popped by completion), clear highlight
1983 if (NILP (w
->buffer
))
1984 display_info
->mouse_face_window
= Qnil
;
1987 for (i
= 0; i
< w
->desired_matrix
->nrows
; ++i
)
1988 if (MATRIX_ROW_ENABLED_P (w
->desired_matrix
, i
)
1989 && MATRIX_ROW (w
->current_matrix
, i
)->mouse_face_p
)
1993 if (NILP (w
->buffer
) || i
< w
->desired_matrix
->nrows
)
1994 clear_mouse_face (display_info
);
1997 else if (mouse_face_frame
&& !FRAME_LIVE_P (mouse_face_frame
))
1999 /* If the frame with mouse highlight was deleted, invalidate the
2001 display_info
->mouse_face_beg_row
= display_info
->mouse_face_beg_col
= -1;
2002 display_info
->mouse_face_end_row
= display_info
->mouse_face_end_col
= -1;
2003 display_info
->mouse_face_window
= Qnil
;
2004 display_info
->mouse_face_deferred_gc
= 0;
2005 display_info
->mouse_face_mouse_frame
= NULL
;
2012 IT_update_end (struct frame
*f
)
2014 FRAME_X_DISPLAY_INFO (f
)->mouse_face_defer
= 0;
2017 Lisp_Object Qcursor_type
;
2020 IT_frame_up_to_date (struct frame
*f
)
2022 struct display_info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
2023 Lisp_Object new_cursor
, frame_desired_cursor
;
2026 if (dpyinfo
->mouse_face_deferred_gc
2027 || (f
&& f
== dpyinfo
->mouse_face_mouse_frame
))
2030 if (dpyinfo
->mouse_face_mouse_frame
)
2031 IT_note_mouse_highlight (dpyinfo
->mouse_face_mouse_frame
,
2032 dpyinfo
->mouse_face_mouse_x
,
2033 dpyinfo
->mouse_face_mouse_y
);
2034 dpyinfo
->mouse_face_deferred_gc
= 0;
2038 /* Set the cursor type to whatever they wanted. In a minibuffer
2039 window, we want the cursor to appear only if we are reading input
2040 from this window, and we want the cursor to be taken from the
2041 frame parameters. For the selected window, we use either its
2042 buffer-local value or the value from the frame parameters if the
2043 buffer doesn't define its local value for the cursor type. */
2044 sw
= XWINDOW (f
->selected_window
);
2045 frame_desired_cursor
= Fcdr (Fassq (Qcursor_type
, f
->param_alist
));
2046 if (cursor_in_echo_area
2047 && FRAME_HAS_MINIBUF_P (f
)
2048 && EQ (FRAME_MINIBUF_WINDOW (f
), echo_area_window
)
2049 && sw
== XWINDOW (echo_area_window
))
2050 new_cursor
= frame_desired_cursor
;
2053 struct buffer
*b
= XBUFFER (sw
->buffer
);
2055 if (EQ (b
->cursor_type
, Qt
))
2056 new_cursor
= frame_desired_cursor
;
2057 else if (NILP (b
->cursor_type
)) /* nil means no cursor */
2058 new_cursor
= Fcons (Qbar
, make_number (0));
2060 new_cursor
= b
->cursor_type
;
2063 IT_set_cursor_type (f
, new_cursor
);
2065 IT_cmgoto (f
); /* position cursor when update is done */
2068 /* Copy LEN glyphs displayed on a single line whose vertical position
2069 is YPOS, beginning at horizontal position XFROM to horizontal
2070 position XTO, by moving blocks in the video memory. Used by
2071 functions that insert and delete glyphs. */
2073 IT_copy_glyphs (int xfrom
, int xto
, size_t len
, int ypos
)
2075 /* The offsets of source and destination relative to the
2076 conventional memorty selector. */
2077 int from
= 2 * (xfrom
+ screen_size_X
* ypos
) + ScreenPrimary
;
2078 int to
= 2 * (xto
+ screen_size_X
* ypos
) + ScreenPrimary
;
2080 if (from
== to
|| len
<= 0)
2083 _farsetsel (_dos_ds
);
2085 /* The source and destination might overlap, so we need to move
2086 glyphs non-destructively. */
2089 for ( ; len
; from
+= 2, to
+= 2, len
--)
2090 _farnspokew (to
, _farnspeekw (from
));
2094 from
+= (len
- 1) * 2;
2095 to
+= (len
- 1) * 2;
2096 for ( ; len
; from
-= 2, to
-= 2, len
--)
2097 _farnspokew (to
, _farnspeekw (from
));
2099 if (screen_virtual_segment
)
2100 dosv_refresh_virtual_screen (ypos
* screen_size_X
* 2, screen_size_X
);
2103 /* Insert and delete glyphs. */
2105 IT_insert_glyphs (start
, len
)
2106 register struct glyph
*start
;
2109 int shift_by_width
= screen_size_X
- (new_pos_X
+ len
);
2111 /* Shift right the glyphs from the nominal cursor position to the
2112 end of this line. */
2113 IT_copy_glyphs (new_pos_X
, new_pos_X
+ len
, shift_by_width
, new_pos_Y
);
2115 /* Now write the glyphs to be inserted. */
2116 IT_write_glyphs (start
, len
);
2120 IT_delete_glyphs (n
)
2126 /* set-window-configuration on window.c needs this. */
2128 x_set_menu_bar_lines (f
, value
, oldval
)
2130 Lisp_Object value
, oldval
;
2132 set_menu_bar_lines (f
, value
, oldval
);
2135 /* This was copied from xfaces.c */
2137 extern Lisp_Object Qbackground_color
;
2138 extern Lisp_Object Qforeground_color
;
2139 Lisp_Object Qreverse
;
2140 extern Lisp_Object Qtitle
;
2142 /* IT_set_terminal_modes is called when emacs is started,
2143 resumed, and whenever the screen is redrawn! */
2146 IT_set_terminal_modes (void)
2149 fprintf (termscript
, "\n<SET_TERM>");
2151 screen_size_X
= ScreenCols ();
2152 screen_size_Y
= ScreenRows ();
2153 screen_size
= screen_size_X
* screen_size_Y
;
2155 new_pos_X
= new_pos_Y
= 0;
2156 current_pos_X
= current_pos_Y
= -1;
2158 if (term_setup_done
)
2160 term_setup_done
= 1;
2162 startup_screen_size_X
= screen_size_X
;
2163 startup_screen_size_Y
= screen_size_Y
;
2164 startup_screen_attrib
= ScreenAttrib
;
2167 /* Is DOS/V (or any other RSIS software which relocates
2168 the screen) installed? */
2170 unsigned short es_value
;
2173 regs
.h
.ah
= 0xfe; /* get relocated screen address */
2174 if (ScreenPrimary
== 0xb0000UL
|| ScreenPrimary
== 0xb8000UL
)
2175 regs
.x
.es
= (ScreenPrimary
>> 4) & 0xffff;
2176 else if (screen_old_address
) /* already switched to Japanese mode once */
2177 regs
.x
.es
= (screen_old_address
>> 4) & 0xffff;
2179 regs
.x
.es
= ScreenMode () == 7 ? 0xb000 : 0xb800;
2181 es_value
= regs
.x
.es
;
2182 __dpmi_int (0x10, ®s
);
2184 if (regs
.x
.es
!= es_value
)
2186 /* screen_old_address is only set if ScreenPrimary does NOT
2187 already point to the relocated buffer address returned by
2188 the Int 10h/AX=FEh call above. DJGPP v2.02 and later sets
2189 ScreenPrimary to that address at startup under DOS/V. */
2190 if (regs
.x
.es
!= (ScreenPrimary
>> 4) & 0xffff)
2191 screen_old_address
= ScreenPrimary
;
2192 screen_virtual_segment
= regs
.x
.es
;
2193 screen_virtual_offset
= regs
.x
.di
;
2194 ScreenPrimary
= (screen_virtual_segment
<< 4) + screen_virtual_offset
;
2197 #endif /* __DJGPP__ > 1 */
2199 ScreenGetCursor (&startup_pos_Y
, &startup_pos_X
);
2200 ScreenRetrieve (startup_screen_buffer
= xmalloc (screen_size
* 2));
2203 fprintf (termscript
, "<SCREEN SAVED (dimensions=%dx%d)>\n",
2204 screen_size_X
, screen_size_Y
);
2209 /* IT_reset_terminal_modes is called when emacs is
2210 suspended or killed. */
2213 IT_reset_terminal_modes (void)
2215 int display_row_start
= (int) ScreenPrimary
;
2216 int saved_row_len
= startup_screen_size_X
* 2;
2217 int update_row_len
= ScreenCols () * 2;
2218 int current_rows
= ScreenRows ();
2219 int to_next_row
= update_row_len
;
2220 unsigned char *saved_row
= startup_screen_buffer
;
2221 int cursor_pos_X
= ScreenCols () - 1;
2222 int cursor_pos_Y
= ScreenRows () - 1;
2225 fprintf (termscript
, "\n<RESET_TERM>");
2227 if (!term_setup_done
)
2232 /* Leave the video system in the same state as we found it,
2233 as far as the blink/bright-background bit is concerned. */
2234 maybe_enable_blinking ();
2236 /* We have a situation here.
2237 We cannot just do ScreenUpdate(startup_screen_buffer) because
2238 the luser could have changed screen dimensions inside Emacs
2239 and failed (or didn't want) to restore them before killing
2240 Emacs. ScreenUpdate() uses the *current* screen dimensions and
2241 thus will happily use memory outside what was allocated for
2242 `startup_screen_buffer'.
2243 Thus we only restore as much as the current screen dimensions
2244 can hold, and clear the rest (if the saved screen is smaller than
2245 the current) with the color attribute saved at startup. The cursor
2246 is also restored within the visible dimensions. */
2248 ScreenAttrib
= startup_screen_attrib
;
2250 /* Don't restore the screen if we are exiting less than 2 seconds
2251 after startup: we might be crashing, and the screen might show
2252 some vital clues to what's wrong. */
2253 if (clock () - startup_time
>= 2*CLOCKS_PER_SEC
)
2256 if (screen_virtual_segment
)
2257 dosv_refresh_virtual_screen (0, screen_size
);
2259 if (update_row_len
> saved_row_len
)
2260 update_row_len
= saved_row_len
;
2261 if (current_rows
> startup_screen_size_Y
)
2262 current_rows
= startup_screen_size_Y
;
2265 fprintf (termscript
, "<SCREEN RESTORED (dimensions=%dx%d)>\n",
2266 update_row_len
/ 2, current_rows
);
2268 while (current_rows
--)
2270 dosmemput (saved_row
, update_row_len
, display_row_start
);
2271 if (screen_virtual_segment
)
2272 dosv_refresh_virtual_screen (display_row_start
- ScreenPrimary
,
2273 update_row_len
/ 2);
2274 saved_row
+= saved_row_len
;
2275 display_row_start
+= to_next_row
;
2278 if (startup_pos_X
< cursor_pos_X
)
2279 cursor_pos_X
= startup_pos_X
;
2280 if (startup_pos_Y
< cursor_pos_Y
)
2281 cursor_pos_Y
= startup_pos_Y
;
2283 ScreenSetCursor (cursor_pos_Y
, cursor_pos_X
);
2284 xfree (startup_screen_buffer
);
2286 term_setup_done
= 0;
2290 IT_set_terminal_window (int foo
)
2294 /* Remember the screen colors of the curent frame, to serve as the
2295 default colors for newly-created frames. */
2296 DEFUN ("msdos-remember-default-colors", Fmsdos_remember_default_colors
,
2297 Smsdos_remember_default_colors
, 1, 1, 0,
2298 doc
: /* Remember the screen colors of the current frame. */)
2304 CHECK_FRAME (frame
);
2307 /* This function is called after applying default-frame-alist to the
2308 initial frame. At that time, if reverse-colors option was
2309 specified in default-frame-alist, it was already applied, and
2310 frame colors are reversed. We need to account for that. */
2311 if (EQ (Fcdr (Fassq (Qreverse
, f
->param_alist
)), Qt
))
2313 initial_screen_colors
[0] = FRAME_BACKGROUND_PIXEL (f
);
2314 initial_screen_colors
[1] = FRAME_FOREGROUND_PIXEL (f
);
2318 initial_screen_colors
[0] = FRAME_FOREGROUND_PIXEL (f
);
2319 initial_screen_colors
[1] = FRAME_BACKGROUND_PIXEL (f
);
2324 IT_set_frame_parameters (f
, alist
)
2329 int length
= XINT (Flength (alist
));
2332 = (Lisp_Object
*) alloca (length
* sizeof (Lisp_Object
));
2334 = (Lisp_Object
*) alloca (length
* sizeof (Lisp_Object
));
2335 /* Do we have to reverse the foreground and background colors? */
2336 int reverse
= EQ (Fcdr (Fassq (Qreverse
, f
->param_alist
)), Qt
);
2337 int was_reverse
= reverse
;
2338 int redraw
= 0, fg_set
= 0, bg_set
= 0;
2339 int need_to_reverse
;
2340 unsigned long orig_fg
;
2341 unsigned long orig_bg
;
2342 Lisp_Object frame_bg
, frame_fg
;
2343 extern Lisp_Object Qdefault
, QCforeground
, QCbackground
;
2345 /* If we are creating a new frame, begin with the original screen colors
2346 used for the initial frame. */
2347 if (alist
== Vdefault_frame_alist
2348 && initial_screen_colors
[0] != -1 && initial_screen_colors
[1] != -1)
2350 FRAME_FOREGROUND_PIXEL (f
) = initial_screen_colors
[0];
2351 FRAME_BACKGROUND_PIXEL (f
) = initial_screen_colors
[1];
2353 orig_fg
= FRAME_FOREGROUND_PIXEL (f
);
2354 orig_bg
= FRAME_BACKGROUND_PIXEL (f
);
2355 frame_fg
= Fcdr (Fassq (Qforeground_color
, f
->param_alist
));
2356 frame_bg
= Fcdr (Fassq (Qbackground_color
, f
->param_alist
));
2357 /* frame_fg and frame_bg could be nil if, for example,
2358 f->param_alist is nil, e.g. if we are called from
2359 Fmake_terminal_frame. */
2360 if (NILP (frame_fg
))
2361 frame_fg
= build_string (unspecified_fg
);
2362 if (NILP (frame_bg
))
2363 frame_bg
= build_string (unspecified_bg
);
2365 /* Extract parm names and values into those vectors. */
2367 for (tail
= alist
; CONSP (tail
); tail
= Fcdr (tail
))
2372 parms
[i
] = Fcar (elt
);
2373 CHECK_SYMBOL (parms
[i
]);
2374 values
[i
] = Fcdr (elt
);
2380 for (i
= 0; i
< j
; i
++)
2382 Lisp_Object prop
, val
;
2387 if (EQ (prop
, Qreverse
))
2388 reverse
= EQ (val
, Qt
);
2391 need_to_reverse
= reverse
&& !was_reverse
;
2392 if (termscript
&& need_to_reverse
)
2393 fprintf (termscript
, "<INVERSE-VIDEO>\n");
2395 /* Now process the alist elements in reverse of specified order. */
2396 for (i
--; i
>= 0; i
--)
2398 Lisp_Object prop
, val
;
2404 if (EQ (prop
, Qforeground_color
))
2406 unsigned long new_color
= load_color (f
, NULL
, val
, need_to_reverse
2407 ? LFACE_BACKGROUND_INDEX
2408 : LFACE_FOREGROUND_INDEX
);
2409 if (new_color
!= FACE_TTY_DEFAULT_COLOR
2410 && new_color
!= FACE_TTY_DEFAULT_FG_COLOR
2411 && new_color
!= FACE_TTY_DEFAULT_BG_COLOR
)
2413 FRAME_FOREGROUND_PIXEL (f
) = new_color
;
2414 /* Make sure the foreground of the default face for this
2415 frame is changed as well. */
2416 XSETFRAME (frame
, f
);
2417 if (need_to_reverse
)
2419 Finternal_set_lisp_face_attribute (Qdefault
, QCbackground
,
2421 prop
= Qbackground_color
;
2426 Finternal_set_lisp_face_attribute (Qdefault
, QCforeground
,
2432 fprintf (termscript
, "<FGCOLOR %lu>\n", new_color
);
2435 else if (EQ (prop
, Qbackground_color
))
2437 unsigned long new_color
= load_color (f
, NULL
, val
, need_to_reverse
2438 ? LFACE_FOREGROUND_INDEX
2439 : LFACE_BACKGROUND_INDEX
);
2440 if (new_color
!= FACE_TTY_DEFAULT_COLOR
2441 && new_color
!= FACE_TTY_DEFAULT_FG_COLOR
2442 && new_color
!= FACE_TTY_DEFAULT_BG_COLOR
)
2444 FRAME_BACKGROUND_PIXEL (f
) = new_color
;
2445 /* Make sure the background of the default face for this
2446 frame is changed as well. */
2447 XSETFRAME (frame
, f
);
2448 if (need_to_reverse
)
2450 Finternal_set_lisp_face_attribute (Qdefault
, QCforeground
,
2452 prop
= Qforeground_color
;
2457 Finternal_set_lisp_face_attribute (Qdefault
, QCbackground
,
2463 fprintf (termscript
, "<BGCOLOR %lu>\n", new_color
);
2466 else if (EQ (prop
, Qtitle
))
2468 x_set_title (f
, val
);
2470 fprintf (termscript
, "<TITLE: %s>\n", XSTRING (val
)->data
);
2472 else if (EQ (prop
, Qcursor_type
))
2474 IT_set_cursor_type (f
, val
);
2476 fprintf (termscript
, "<CTYPE: %s>\n",
2477 EQ (val
, Qbar
) || CONSP (val
) && EQ (XCAR (val
), Qbar
)
2480 store_frame_param (f
, prop
, val
);
2483 /* If they specified "reverse", but not the colors, we need to swap
2484 the current frame colors. */
2485 if (need_to_reverse
)
2491 XSETFRAME (frame
, f
);
2492 Finternal_set_lisp_face_attribute (Qdefault
, QCforeground
,
2493 tty_color_name (f
, orig_bg
),
2499 XSETFRAME (frame
, f
);
2500 Finternal_set_lisp_face_attribute (Qdefault
, QCbackground
,
2501 tty_color_name (f
, orig_fg
),
2509 face_change_count
++; /* forces xdisp.c to recompute basic faces */
2510 if (f
== SELECTED_FRAME())
2515 extern void init_frame_faces (FRAME_PTR
);
2517 #endif /* !HAVE_X_WINDOWS */
2520 /* Do we need the internal terminal? */
2523 internal_terminal_init ()
2525 char *term
= getenv ("TERM");
2527 struct frame
*sf
= SELECTED_FRAME();
2529 #ifdef HAVE_X_WINDOWS
2530 if (!inhibit_window_system
)
2535 = (!noninteractive
) && term
&& !strcmp (term
, "internal");
2537 if (getenv ("EMACSTEST"))
2538 termscript
= fopen (getenv ("EMACSTEST"), "wt");
2540 #ifndef HAVE_X_WINDOWS
2541 if (!internal_terminal
|| inhibit_window_system
)
2543 sf
->output_method
= output_termcap
;
2547 Vwindow_system
= intern ("pc");
2548 Vwindow_system_version
= make_number (1);
2549 sf
->output_method
= output_msdos_raw
;
2551 /* If Emacs was dumped on DOS/V machine, forget the stale VRAM address. */
2552 screen_old_address
= 0;
2554 /* Forget the stale screen colors as well. */
2555 initial_screen_colors
[0] = initial_screen_colors
[1] = -1;
2557 bzero (&the_only_x_display
, sizeof the_only_x_display
);
2558 the_only_x_display
.background_pixel
= 7; /* White */
2559 the_only_x_display
.foreground_pixel
= 0; /* Black */
2561 colors
= getenv ("EMACSCOLORS");
2562 if (colors
&& strlen (colors
) >= 2)
2564 /* The colors use 4 bits each (we enable bright background). */
2565 if (isdigit (colors
[0]))
2567 else if (isxdigit (colors
[0]))
2568 colors
[0] -= (isupper (colors
[0]) ? 'A' : 'a') - 10;
2569 if (colors
[0] >= 0 && colors
[0] < 16)
2570 the_only_x_display
.foreground_pixel
= colors
[0];
2571 if (isdigit (colors
[1]))
2573 else if (isxdigit (colors
[1]))
2574 colors
[1] -= (isupper (colors
[1]) ? 'A' : 'a') - 10;
2575 if (colors
[1] >= 0 && colors
[1] < 16)
2576 the_only_x_display
.background_pixel
= colors
[1];
2578 the_only_x_display
.line_height
= 1;
2579 the_only_x_display
.font
= (XFontStruct
*)1; /* must *not* be zero */
2580 the_only_x_display
.display_info
.mouse_face_mouse_frame
= NULL
;
2581 the_only_x_display
.display_info
.mouse_face_deferred_gc
= 0;
2582 the_only_x_display
.display_info
.mouse_face_beg_row
=
2583 the_only_x_display
.display_info
.mouse_face_beg_col
= -1;
2584 the_only_x_display
.display_info
.mouse_face_end_row
=
2585 the_only_x_display
.display_info
.mouse_face_end_col
= -1;
2586 the_only_x_display
.display_info
.mouse_face_face_id
= DEFAULT_FACE_ID
;
2587 the_only_x_display
.display_info
.mouse_face_window
= Qnil
;
2588 the_only_x_display
.display_info
.mouse_face_mouse_x
=
2589 the_only_x_display
.display_info
.mouse_face_mouse_y
= 0;
2590 the_only_x_display
.display_info
.mouse_face_defer
= 0;
2592 init_frame_faces (sf
);
2594 ring_bell_hook
= IT_ring_bell
;
2595 insert_glyphs_hook
= IT_insert_glyphs
;
2596 delete_glyphs_hook
= IT_delete_glyphs
;
2597 write_glyphs_hook
= IT_write_glyphs
;
2598 cursor_to_hook
= raw_cursor_to_hook
= IT_cursor_to
;
2599 clear_to_end_hook
= IT_clear_to_end
;
2600 clear_end_of_line_hook
= IT_clear_end_of_line
;
2601 clear_frame_hook
= IT_clear_screen
;
2602 update_begin_hook
= IT_update_begin
;
2603 update_end_hook
= IT_update_end
;
2604 frame_up_to_date_hook
= IT_frame_up_to_date
;
2606 /* These hooks are called by term.c without being checked. */
2607 set_terminal_modes_hook
= IT_set_terminal_modes
;
2608 reset_terminal_modes_hook
= IT_reset_terminal_modes
;
2609 set_terminal_window_hook
= IT_set_terminal_window
;
2610 char_ins_del_ok
= 0;
2614 dos_get_saved_screen (screen
, rows
, cols
)
2619 #ifndef HAVE_X_WINDOWS
2620 *screen
= startup_screen_buffer
;
2621 *cols
= startup_screen_size_X
;
2622 *rows
= startup_screen_size_Y
;
2623 return *screen
!= (char *)0;
2629 #ifndef HAVE_X_WINDOWS
2631 /* We are not X, but we can emulate it well enough for our needs... */
2635 if (! FRAME_MSDOS_P (SELECTED_FRAME()))
2636 error ("Not running under a window system");
2642 /* ----------------------- Keyboard control ----------------------
2644 * Keymaps reflect the following keyboard layout:
2646 * 0 1 2 3 4 5 6 7 8 9 10 11 12 BS
2647 * TAB 15 16 17 18 19 20 21 22 23 24 25 26 (41)
2648 * CLOK 30 31 32 33 34 35 36 37 38 39 40 (41) RET
2649 * SH () 45 46 47 48 49 50 51 52 53 54 SHIFT
2653 #define Ignore 0x0000
2654 #define Normal 0x0000 /* normal key - alt changes scan-code */
2655 #define FctKey 0x1000 /* func key if c == 0, else c */
2656 #define Special 0x2000 /* func key even if c != 0 */
2657 #define ModFct 0x3000 /* special if mod-keys, else 'c' */
2658 #define Map 0x4000 /* alt scan-code, map to unshift/shift key */
2659 #define KeyPad 0x5000 /* map to insert/kp-0 depending on c == 0xe0 */
2660 #define Grey 0x6000 /* Grey keypad key */
2662 #define Alt 0x0100 /* alt scan-code */
2663 #define Ctrl 0x0200 /* ctrl scan-code */
2664 #define Shift 0x0400 /* shift scan-code */
2666 static int extended_kbd
; /* 101 (102) keyboard present. */
2668 struct kbd_translate
{
2671 unsigned short code
;
2674 struct dos_keyboard_map
2679 struct kbd_translate
*translate_table
;
2683 static struct dos_keyboard_map us_keyboard
= {
2685 /* 01234567890123456789012345678901234567890 12345678901234 */
2686 "`1234567890-= qwertyuiop[] asdfghjkl;'\\ zxcvbnm,./ ",
2687 /* 0123456789012345678901234567890123456789 012345678901234 */
2688 "~!@#$%^&*()_+ QWERTYUIOP{} ASDFGHJKL:\"| ZXCVBNM<>? ",
2689 0, /* no Alt-Gr key */
2690 0 /* no translate table */
2693 static struct dos_keyboard_map fr_keyboard
= {
2695 /* 012 3456789012345678901234567890123456789012345678901234 */
2696 "ý&\82\",(-\8a_\80\85)= azertyuiop^$ qsdfghjklm\97* wxcvbnm;:! ",
2697 /* 0123456789012345678901234567890123456789012345678901234 */
2698 " 1234567890ø+ AZERTYUIOPù\9c QSDFGHJKLM%æ WXCVBN?./õ ",
2699 /* 01234567 89012345678901234567890123456789012345678901234 */
2701 0 /* no translate table */
2705 * Italian keyboard support, country code 39.
2708 * added also {,},` as, respectively, AltGr-8, AltGr-9, AltGr-'
2709 * Donated by Stefano Brozzi <brozzis@mag00.cedi.unipr.it>
2712 static struct kbd_translate it_kbd_translate_table
[] = {
2713 { 0x56, 0x3c, Normal
| 13 },
2714 { 0x56, 0x3e, Normal
| 27 },
2717 static struct dos_keyboard_map it_keyboard
= {
2719 /* 0 123456789012345678901234567890123456789012345678901234 */
2720 "\\1234567890'\8d< qwertyuiop\8a+> asdfghjkl\95\85\97 zxcvbnm,.- ",
2721 /* 01 23456789012345678901234567890123456789012345678901234 */
2722 "|!\"\9c$%&/()=?^> QWERTYUIOP\82* ASDFGHJKL\87øõ ZXCVBNM;:_ ",
2723 /* 0123456789012345678901234567890123456789012345678901234 */
2725 it_kbd_translate_table
2728 static struct dos_keyboard_map dk_keyboard
= {
2730 /* 0123456789012345678901234567890123456789012345678901234 */
2731 "«1234567890+| qwertyuiop\86~ asdfghjkl\91\9b' zxcvbnm,.- ",
2732 /* 01 23456789012345678901234567890123456789012345678901234 */
2733 "õ!\"#$%&/()=?` QWERTYUIOP\8f^ ASDFGHJKL\92\9d* ZXCVBNM;:_ ",
2734 /* 0123456789012345678901234567890123456789012345678901234 */
2736 0 /* no translate table */
2739 static struct kbd_translate jp_kbd_translate_table
[] = {
2740 { 0x73, 0x5c, Normal
| 0 },
2741 { 0x73, 0x5f, Normal
| 0 },
2742 { 0x73, 0x1c, Map
| 0 },
2743 { 0x7d, 0x5c, Normal
| 13 },
2744 { 0x7d, 0x7c, Normal
| 13 },
2745 { 0x7d, 0x1c, Map
| 13 },
2748 static struct dos_keyboard_map jp_keyboard
= {
2750 /* 0123456789012 345678901234567890123456789012345678901234 */
2751 "\\1234567890-^\\ qwertyuiop@[ asdfghjkl;:] zxcvbnm,./ ",
2752 /* 01 23456789012345678901234567890123456789012345678901234 */
2753 "_!\"#$%&'()~=~| QWERTYUIOP`{ ASDFGHJKL+*} ZXCVBNM<>? ",
2754 0, /* no Alt-Gr key */
2755 jp_kbd_translate_table
2758 static struct keyboard_layout_list
2761 struct dos_keyboard_map
*keyboard_map
;
2762 } keyboard_layout_list
[] =
2771 static struct dos_keyboard_map
*keyboard
;
2772 static int keyboard_map_all
;
2773 static int international_keyboard
;
2776 dos_set_keyboard (code
, always
)
2781 _go32_dpmi_registers regs
;
2783 /* See if Keyb.Com is installed (for international keyboard support).
2784 Note: calling Int 2Fh via int86 wedges the DOS box on some versions
2785 of Windows 9X! So don't do that! */
2787 regs
.x
.ss
= regs
.x
.sp
= regs
.x
.flags
= 0;
2788 _go32_dpmi_simulate_int (0x2f, ®s
);
2789 if (regs
.h
.al
== 0xff)
2790 international_keyboard
= 1;
2792 /* Initialize to US settings, for countries that don't have their own. */
2793 keyboard
= keyboard_layout_list
[0].keyboard_map
;
2794 keyboard_map_all
= always
;
2795 dos_keyboard_layout
= 1;
2797 for (i
= 0; i
< (sizeof (keyboard_layout_list
)/sizeof (struct keyboard_layout_list
)); i
++)
2798 if (code
== keyboard_layout_list
[i
].country_code
)
2800 keyboard
= keyboard_layout_list
[i
].keyboard_map
;
2801 keyboard_map_all
= always
;
2802 dos_keyboard_layout
= code
;
2810 unsigned char char_code
; /* normal code */
2811 unsigned char meta_code
; /* M- code */
2812 unsigned char keypad_code
; /* keypad code */
2813 unsigned char editkey_code
; /* edit key */
2814 } keypad_translate_map
[] = {
2815 '0', '0', 0xb0, /* kp-0 */ 0x63, /* insert */
2816 '1', '1', 0xb1, /* kp-1 */ 0x57, /* end */
2817 '2', '2', 0xb2, /* kp-2 */ 0x54, /* down */
2818 '3', '3', 0xb3, /* kp-3 */ 0x56, /* next */
2819 '4', '4', 0xb4, /* kp-4 */ 0x51, /* left */
2820 '5', '5', 0xb5, /* kp-5 */ 0xb5, /* kp-5 */
2821 '6', '6', 0xb6, /* kp-6 */ 0x53, /* right */
2822 '7', '7', 0xb7, /* kp-7 */ 0x50, /* home */
2823 '8', '8', 0xb8, /* kp-8 */ 0x52, /* up */
2824 '9', '9', 0xb9, /* kp-9 */ 0x55, /* prior */
2825 '.', '-', 0xae, /* kp-decimal */ 0xff /* delete */
2830 unsigned char char_code
; /* normal code */
2831 unsigned char keypad_code
; /* keypad code */
2832 } grey_key_translate_map
[] = {
2833 '/', 0xaf, /* kp-decimal */
2834 '*', 0xaa, /* kp-multiply */
2835 '-', 0xad, /* kp-subtract */
2836 '+', 0xab, /* kp-add */
2837 '\r', 0x8d /* kp-enter */
2840 static unsigned short
2841 ibmpc_translate_map
[] =
2843 /* --------------- 00 to 0f --------------- */
2844 Normal
| 0xff, /* Ctrl Break + Alt-NNN */
2845 Alt
| ModFct
| 0x1b, /* Escape */
2846 Normal
| 1, /* '1' */
2847 Normal
| 2, /* '2' */
2848 Normal
| 3, /* '3' */
2849 Normal
| 4, /* '4' */
2850 Normal
| 5, /* '5' */
2851 Normal
| 6, /* '6' */
2852 Normal
| 7, /* '7' */
2853 Normal
| 8, /* '8' */
2854 Normal
| 9, /* '9' */
2855 Normal
| 10, /* '0' */
2856 Normal
| 11, /* '-' */
2857 Normal
| 12, /* '=' */
2858 Special
| 0x08, /* Backspace */
2859 ModFct
| 0x74, /* Tab/Backtab */
2861 /* --------------- 10 to 1f --------------- */
2874 ModFct
| 0x0d, /* Return */
2879 /* --------------- 20 to 2f --------------- */
2888 Map
| 40, /* '\'' */
2890 Ignore
, /* Left shift */
2891 Map
| 41, /* '\\' */
2897 /* --------------- 30 to 3f --------------- */
2904 Ignore
, /* Right shift */
2905 Grey
| 1, /* Grey * */
2907 Normal
| 55, /* ' ' */
2908 Ignore
, /* Caps Lock */
2909 FctKey
| 0xbe, /* F1 */
2910 FctKey
| 0xbf, /* F2 */
2911 FctKey
| 0xc0, /* F3 */
2912 FctKey
| 0xc1, /* F4 */
2913 FctKey
| 0xc2, /* F5 */
2915 /* --------------- 40 to 4f --------------- */
2916 FctKey
| 0xc3, /* F6 */
2917 FctKey
| 0xc4, /* F7 */
2918 FctKey
| 0xc5, /* F8 */
2919 FctKey
| 0xc6, /* F9 */
2920 FctKey
| 0xc7, /* F10 */
2921 Ignore
, /* Num Lock */
2922 Ignore
, /* Scroll Lock */
2923 KeyPad
| 7, /* Home */
2924 KeyPad
| 8, /* Up */
2925 KeyPad
| 9, /* Page Up */
2926 Grey
| 2, /* Grey - */
2927 KeyPad
| 4, /* Left */
2928 KeyPad
| 5, /* Keypad 5 */
2929 KeyPad
| 6, /* Right */
2930 Grey
| 3, /* Grey + */
2931 KeyPad
| 1, /* End */
2933 /* --------------- 50 to 5f --------------- */
2934 KeyPad
| 2, /* Down */
2935 KeyPad
| 3, /* Page Down */
2936 KeyPad
| 0, /* Insert */
2937 KeyPad
| 10, /* Delete */
2938 Shift
| FctKey
| 0xbe, /* (Shift) F1 */
2939 Shift
| FctKey
| 0xbf, /* (Shift) F2 */
2940 Shift
| FctKey
| 0xc0, /* (Shift) F3 */
2941 Shift
| FctKey
| 0xc1, /* (Shift) F4 */
2942 Shift
| FctKey
| 0xc2, /* (Shift) F5 */
2943 Shift
| FctKey
| 0xc3, /* (Shift) F6 */
2944 Shift
| FctKey
| 0xc4, /* (Shift) F7 */
2945 Shift
| FctKey
| 0xc5, /* (Shift) F8 */
2946 Shift
| FctKey
| 0xc6, /* (Shift) F9 */
2947 Shift
| FctKey
| 0xc7, /* (Shift) F10 */
2948 Ctrl
| FctKey
| 0xbe, /* (Ctrl) F1 */
2949 Ctrl
| FctKey
| 0xbf, /* (Ctrl) F2 */
2951 /* --------------- 60 to 6f --------------- */
2952 Ctrl
| FctKey
| 0xc0, /* (Ctrl) F3 */
2953 Ctrl
| FctKey
| 0xc1, /* (Ctrl) F4 */
2954 Ctrl
| FctKey
| 0xc2, /* (Ctrl) F5 */
2955 Ctrl
| FctKey
| 0xc3, /* (Ctrl) F6 */
2956 Ctrl
| FctKey
| 0xc4, /* (Ctrl) F7 */
2957 Ctrl
| FctKey
| 0xc5, /* (Ctrl) F8 */
2958 Ctrl
| FctKey
| 0xc6, /* (Ctrl) F9 */
2959 Ctrl
| FctKey
| 0xc7, /* (Ctrl) F10 */
2960 Alt
| FctKey
| 0xbe, /* (Alt) F1 */
2961 Alt
| FctKey
| 0xbf, /* (Alt) F2 */
2962 Alt
| FctKey
| 0xc0, /* (Alt) F3 */
2963 Alt
| FctKey
| 0xc1, /* (Alt) F4 */
2964 Alt
| FctKey
| 0xc2, /* (Alt) F5 */
2965 Alt
| FctKey
| 0xc3, /* (Alt) F6 */
2966 Alt
| FctKey
| 0xc4, /* (Alt) F7 */
2967 Alt
| FctKey
| 0xc5, /* (Alt) F8 */
2969 /* --------------- 70 to 7f --------------- */
2970 Alt
| FctKey
| 0xc6, /* (Alt) F9 */
2971 Alt
| FctKey
| 0xc7, /* (Alt) F10 */
2972 Ctrl
| FctKey
| 0x6d, /* (Ctrl) Sys Rq */
2973 Ctrl
| KeyPad
| 4, /* (Ctrl) Left */
2974 Ctrl
| KeyPad
| 6, /* (Ctrl) Right */
2975 Ctrl
| KeyPad
| 1, /* (Ctrl) End */
2976 Ctrl
| KeyPad
| 3, /* (Ctrl) Page Down */
2977 Ctrl
| KeyPad
| 7, /* (Ctrl) Home */
2978 Alt
| Map
| 1, /* '1' */
2979 Alt
| Map
| 2, /* '2' */
2980 Alt
| Map
| 3, /* '3' */
2981 Alt
| Map
| 4, /* '4' */
2982 Alt
| Map
| 5, /* '5' */
2983 Alt
| Map
| 6, /* '6' */
2984 Alt
| Map
| 7, /* '7' */
2985 Alt
| Map
| 8, /* '8' */
2987 /* --------------- 80 to 8f --------------- */
2988 Alt
| Map
| 9, /* '9' */
2989 Alt
| Map
| 10, /* '0' */
2990 Alt
| Map
| 11, /* '-' */
2991 Alt
| Map
| 12, /* '=' */
2992 Ctrl
| KeyPad
| 9, /* (Ctrl) Page Up */
2993 FctKey
| 0xc8, /* F11 */
2994 FctKey
| 0xc9, /* F12 */
2995 Shift
| FctKey
| 0xc8, /* (Shift) F11 */
2996 Shift
| FctKey
| 0xc9, /* (Shift) F12 */
2997 Ctrl
| FctKey
| 0xc8, /* (Ctrl) F11 */
2998 Ctrl
| FctKey
| 0xc9, /* (Ctrl) F12 */
2999 Alt
| FctKey
| 0xc8, /* (Alt) F11 */
3000 Alt
| FctKey
| 0xc9, /* (Alt) F12 */
3001 Ctrl
| KeyPad
| 8, /* (Ctrl) Up */
3002 Ctrl
| Grey
| 2, /* (Ctrl) Grey - */
3003 Ctrl
| KeyPad
| 5, /* (Ctrl) Keypad 5 */
3005 /* --------------- 90 to 9f --------------- */
3006 Ctrl
| Grey
| 3, /* (Ctrl) Grey + */
3007 Ctrl
| KeyPad
| 2, /* (Ctrl) Down */
3008 Ctrl
| KeyPad
| 0, /* (Ctrl) Insert */
3009 Ctrl
| KeyPad
| 10, /* (Ctrl) Delete */
3010 Ctrl
| FctKey
| 0x09, /* (Ctrl) Tab */
3011 Ctrl
| Grey
| 0, /* (Ctrl) Grey / */
3012 Ctrl
| Grey
| 1, /* (Ctrl) Grey * */
3013 Alt
| FctKey
| 0x50, /* (Alt) Home */
3014 Alt
| FctKey
| 0x52, /* (Alt) Up */
3015 Alt
| FctKey
| 0x55, /* (Alt) Page Up */
3016 Ignore
, /* NO KEY */
3017 Alt
| FctKey
| 0x51, /* (Alt) Left */
3018 Ignore
, /* NO KEY */
3019 Alt
| FctKey
| 0x53, /* (Alt) Right */
3020 Ignore
, /* NO KEY */
3021 Alt
| FctKey
| 0x57, /* (Alt) End */
3023 /* --------------- a0 to af --------------- */
3024 Alt
| KeyPad
| 2, /* (Alt) Down */
3025 Alt
| KeyPad
| 3, /* (Alt) Page Down */
3026 Alt
| KeyPad
| 0, /* (Alt) Insert */
3027 Alt
| KeyPad
| 10, /* (Alt) Delete */
3028 Alt
| Grey
| 0, /* (Alt) Grey / */
3029 Alt
| FctKey
| 0x09, /* (Alt) Tab */
3030 Alt
| Grey
| 4 /* (Alt) Keypad Enter */
3033 /* These bit-positions corresponds to values returned by BIOS */
3034 #define SHIFT_P 0x0003 /* two bits! */
3035 #define CTRL_P 0x0004
3036 #define ALT_P 0x0008
3037 #define SCRLOCK_P 0x0010
3038 #define NUMLOCK_P 0x0020
3039 #define CAPSLOCK_P 0x0040
3040 #define ALT_GR_P 0x0800
3041 #define SUPER_P 0x4000 /* pseudo */
3042 #define HYPER_P 0x8000 /* pseudo */
3045 dos_get_modifiers (keymask
)
3052 /* Calculate modifier bits */
3053 regs
.h
.ah
= extended_kbd
? 0x12 : 0x02;
3054 int86 (0x16, ®s
, ®s
);
3058 mask
= regs
.h
.al
& (SHIFT_P
| CTRL_P
| ALT_P
|
3059 SCRLOCK_P
| NUMLOCK_P
| CAPSLOCK_P
);
3063 mask
= regs
.h
.al
& (SHIFT_P
|
3064 SCRLOCK_P
| NUMLOCK_P
| CAPSLOCK_P
);
3066 /* Do not break international keyboard support. */
3067 /* When Keyb.Com is loaded, the right Alt key is */
3068 /* used for accessing characters like { and } */
3069 if (regs
.h
.ah
& 2) /* Left ALT pressed ? */
3072 if ((regs
.h
.ah
& 8) != 0) /* Right ALT pressed ? */
3075 if (dos_hyper_key
== 1)
3078 modifiers
|= hyper_modifier
;
3080 else if (dos_super_key
== 1)
3083 modifiers
|= super_modifier
;
3085 else if (!international_keyboard
)
3087 /* If Keyb.Com is NOT installed, let Right Alt behave
3088 like the Left Alt. */
3094 if (regs
.h
.ah
& 1) /* Left CTRL pressed ? */
3097 if (regs
.h
.ah
& 4) /* Right CTRL pressed ? */
3099 if (dos_hyper_key
== 2)
3102 modifiers
|= hyper_modifier
;
3104 else if (dos_super_key
== 2)
3107 modifiers
|= super_modifier
;
3115 modifiers
|= shift_modifier
;
3117 modifiers
|= ctrl_modifier
;
3119 modifiers
|= meta_modifier
;
3126 #define NUM_RECENT_DOSKEYS (100)
3127 int recent_doskeys_index
; /* Index for storing next element into recent_doskeys */
3128 int total_doskeys
; /* Total number of elements stored into recent_doskeys */
3129 Lisp_Object recent_doskeys
; /* A vector, holding the last 100 keystrokes */
3131 DEFUN ("recent-doskeys", Frecent_doskeys
, Srecent_doskeys
, 0, 0, 0,
3132 doc
: /* Return vector of last 100 keyboard input values seen in dos_rawgetc.
3133 Each input key receives two values in this vector: first the ASCII code,
3134 and then the scan code. */)
3137 Lisp_Object
*keys
= XVECTOR (recent_doskeys
)->contents
;
3140 if (total_doskeys
< NUM_RECENT_DOSKEYS
)
3141 return Fvector (total_doskeys
, keys
);
3144 val
= Fvector (NUM_RECENT_DOSKEYS
, keys
);
3145 bcopy (keys
+ recent_doskeys_index
,
3146 XVECTOR (val
)->contents
,
3147 (NUM_RECENT_DOSKEYS
- recent_doskeys_index
) * sizeof (Lisp_Object
));
3149 XVECTOR (val
)->contents
+ NUM_RECENT_DOSKEYS
- recent_doskeys_index
,
3150 recent_doskeys_index
* sizeof (Lisp_Object
));
3155 /* Get a char from keyboard. Function keys are put into the event queue. */
3159 struct input_event event
;
3162 #ifndef HAVE_X_WINDOWS
3163 /* Maybe put the cursor where it should be. */
3164 IT_cmgoto (SELECTED_FRAME());
3167 /* The following condition is equivalent to `kbhit ()', except that
3168 it uses the bios to do its job. This pleases DESQview/X. */
3169 while ((regs
.h
.ah
= extended_kbd
? 0x11 : 0x01),
3170 int86 (0x16, ®s
, ®s
),
3171 (regs
.x
.flags
& 0x40) == 0)
3174 register unsigned char c
;
3175 int sc
, code
= -1, mask
, kp_mode
;
3178 regs
.h
.ah
= extended_kbd
? 0x10 : 0x00;
3179 int86 (0x16, ®s
, ®s
);
3184 XVECTOR (recent_doskeys
)->contents
[recent_doskeys_index
++]
3186 if (recent_doskeys_index
== NUM_RECENT_DOSKEYS
)
3187 recent_doskeys_index
= 0;
3188 XVECTOR (recent_doskeys
)->contents
[recent_doskeys_index
++]
3190 if (recent_doskeys_index
== NUM_RECENT_DOSKEYS
)
3191 recent_doskeys_index
= 0;
3193 modifiers
= dos_get_modifiers (&mask
);
3195 #ifndef HAVE_X_WINDOWS
3196 if (!NILP (Vdos_display_scancodes
))
3199 sprintf (buf
, "%02x:%02x*%04x",
3200 (unsigned) (sc
&0xff), (unsigned) c
, mask
);
3201 dos_direct_output (screen_size_Y
- 2, screen_size_X
- 12, buf
, 10);
3209 case 10: /* Ctrl Grey Enter */
3210 code
= Ctrl
| Grey
| 4;
3212 case 13: /* Grey Enter */
3215 case '/': /* Grey / */
3225 /* Try the keyboard-private translation table first. */
3226 if (keyboard
->translate_table
)
3228 struct kbd_translate
*p
= keyboard
->translate_table
;
3232 if (p
->sc
== sc
&& p
->ch
== c
)
3240 /* If the private table didn't translate it, use the general
3244 if (sc
>= (sizeof (ibmpc_translate_map
) / sizeof (short)))
3246 if ((code
= ibmpc_translate_map
[sc
]) == Ignore
)
3253 /* We only look at the keyboard Ctrl/Shift/Alt keys when
3254 Emacs is ready to read a key. Therefore, if they press
3255 `Alt-x' when Emacs is busy, by the time we get to
3256 `dos_get_modifiers', they might have already released the
3257 Alt key, and Emacs gets just `x', which is BAD.
3258 However, for keys with the `Map' property set, the ASCII
3259 code returns zero iff Alt is pressed. So, when we DON'T
3260 have to support international_keyboard, we don't have to
3261 distinguish between the left and right Alt keys, and we
3262 can set the META modifier for any keys with the `Map'
3263 property if they return zero ASCII code (c = 0). */
3265 || ( (code
& 0xf000) == Map
&& !international_keyboard
))
3266 modifiers
|= meta_modifier
;
3268 modifiers
|= ctrl_modifier
;
3270 modifiers
|= shift_modifier
;
3273 switch (code
& 0xf000)
3276 if (c
&& !(mask
& (SHIFT_P
| ALT_P
| CTRL_P
| HYPER_P
| SUPER_P
)))
3278 c
= 0; /* Special */
3291 if (c
== 0) /* ctrl-break */
3293 return c
; /* ALT-nnn */
3295 if (!keyboard_map_all
)
3304 if (c
&& !(mask
& ALT_P
) && !((mask
& SHIFT_P
) && (mask
& CTRL_P
)))
3305 if (!keyboard_map_all
)
3309 if (mask
& ALT_P
&& code
<= 10 && code
> 0 && dos_keypad_mode
& 0x200)
3310 mask
|= SHIFT_P
; /* ALT-1 => M-! etc. */
3314 code
= keyboard
->shifted
[code
];
3316 modifiers
&= ~shift_modifier
;
3319 if ((mask
& ALT_GR_P
) && keyboard
->alt_gr
&& keyboard
->alt_gr
[code
] != ' ')
3320 code
= keyboard
->alt_gr
[code
];
3322 code
= keyboard
->unshifted
[code
];
3327 if (c
== 0xe0) /* edit key */
3330 if ((mask
& (NUMLOCK_P
|CTRL_P
|SHIFT_P
|ALT_P
)) == NUMLOCK_P
) /* numlock on */
3331 kp_mode
= dos_keypad_mode
& 0x03;
3333 kp_mode
= (dos_keypad_mode
>> 4) & 0x03;
3338 if (code
== 10 && dos_decimal_point
)
3339 return dos_decimal_point
;
3340 return keypad_translate_map
[code
].char_code
;
3343 code
= 0xff00 | keypad_translate_map
[code
].keypad_code
;
3347 code
= keypad_translate_map
[code
].meta_code
;
3348 modifiers
= meta_modifier
;
3352 code
= 0xff00 | keypad_translate_map
[code
].editkey_code
;
3359 kp_mode
= ((mask
& (NUMLOCK_P
|CTRL_P
|SHIFT_P
|ALT_P
)) == NUMLOCK_P
) ? 0x04 : 0x40;
3360 if (dos_keypad_mode
& kp_mode
)
3361 code
= 0xff00 | grey_key_translate_map
[code
].keypad_code
;
3363 code
= grey_key_translate_map
[code
].char_code
;
3372 event
.kind
= non_ascii_keystroke
;
3374 event
.kind
= ascii_keystroke
;
3376 event
.modifiers
= modifiers
;
3377 event
.frame_or_window
= selected_frame
;
3379 event
.timestamp
= event_timestamp ();
3380 kbd_buffer_store_event (&event
);
3383 if (have_mouse
> 0 && !mouse_preempted
)
3385 int but
, press
, x
, y
, ok
;
3386 int mouse_prev_x
= mouse_last_x
, mouse_prev_y
= mouse_last_y
;
3388 /* Check for mouse movement *before* buttons. */
3389 mouse_check_moved ();
3391 /* If the mouse moved from the spot of its last sighting, we
3392 might need to update mouse highlight. */
3393 if (mouse_last_x
!= mouse_prev_x
|| mouse_last_y
!= mouse_prev_y
)
3395 if (x_autoselect_window_p
)
3398 Lisp_Object mouse_window
;
3400 mouse_window
= window_from_coordinates (SELECTED_FRAME(),
3404 /* A window will be selected only when it is not
3405 selected now and last mouse movement event was not in
3406 it. A minubuffer window will be selected iff it is
3408 if (!EQ (mouse_window
, selected_window
)
3409 && (!MINI_WINDOW_P (XWINDOW (mouse_window
))
3410 || (EQ (mouse_window
, minibuf_window
)
3411 && minibuf_level
> 0)))
3413 Fselect_window (mouse_window
);
3416 previous_help_echo
= help_echo
;
3417 help_echo
= help_echo_object
= help_echo_window
= Qnil
;
3419 IT_note_mouse_highlight (SELECTED_FRAME(),
3420 mouse_last_x
, mouse_last_y
);
3421 /* If the contents of the global variable help_echo has
3422 changed, generate a HELP_EVENT. */
3423 if (!NILP (help_echo
) || !NILP (previous_help_echo
))
3425 /* HELP_EVENT takes 2 events in the event loop. */
3426 event
.kind
= HELP_EVENT
;
3427 event
.frame_or_window
= selected_frame
;
3428 event
.arg
= help_echo_object
;
3429 event
.x
= make_number (help_echo_pos
);
3430 event
.timestamp
= event_timestamp ();
3432 kbd_buffer_store_event (&event
);
3433 if (WINDOWP (help_echo_window
))
3434 event
.frame_or_window
= help_echo_window
;
3435 event
.arg
= help_echo
;
3437 kbd_buffer_store_event (&event
);
3441 for (but
= 0; but
< NUM_MOUSE_BUTTONS
; but
++)
3442 for (press
= 0; press
< 2; press
++)
3444 int button_num
= but
;
3447 ok
= mouse_pressed (but
, &x
, &y
);
3449 ok
= mouse_released (but
, &x
, &y
);
3452 /* Allow a simultaneous press/release of Mouse-1 and
3453 Mouse-2 to simulate Mouse-3 on two-button mice. */
3454 if (mouse_button_count
== 2 && but
< 2)
3456 int x2
, y2
; /* don't clobber original coordinates */
3458 /* If only one button is pressed, wait 100 msec and
3459 check again. This way, Speedy Gonzales isn't
3460 punished, while the slow get their chance. */
3461 if (press
&& mouse_pressed (1-but
, &x2
, &y2
)
3462 || !press
&& mouse_released (1-but
, &x2
, &y2
))
3467 if (press
&& mouse_pressed (1-but
, &x2
, &y2
)
3468 || !press
&& mouse_released (1-but
, &x2
, &y2
))
3473 event
.kind
= mouse_click
;
3474 event
.code
= button_num
;
3475 event
.modifiers
= dos_get_modifiers (0)
3476 | (press
? down_modifier
: up_modifier
);
3479 event
.frame_or_window
= selected_frame
;
3481 event
.timestamp
= event_timestamp ();
3482 kbd_buffer_store_event (&event
);
3490 static int prev_get_char
= -1;
3492 /* Return 1 if a key is ready to be read without suspending execution. */
3496 if (prev_get_char
!= -1)
3499 return ((prev_get_char
= dos_rawgetc ()) != -1);
3502 /* Read a key. Return -1 if no key is ready. */
3506 if (prev_get_char
!= -1)
3508 int c
= prev_get_char
;
3513 return dos_rawgetc ();
3516 #ifndef HAVE_X_WINDOWS
3517 /* See xterm.c for more info. */
3519 pixel_to_glyph_coords (f
, pix_x
, pix_y
, x
, y
, bounds
, noclip
)
3521 register int pix_x
, pix_y
;
3522 register int *x
, *y
;
3526 if (bounds
) abort ();
3528 /* Ignore clipping. */
3535 glyph_to_pixel_coords (f
, x
, y
, pix_x
, pix_y
)
3538 register int *pix_x
, *pix_y
;
3544 /* Simulation of X's menus. Nothing too fancy here -- just make it work
3547 Actually, I don't know the meaning of all the parameters of the functions
3548 here -- I only know how they are called by xmenu.c. I could of course
3549 grab the nearest Xlib manual (down the hall, second-to-last door on the
3550 left), but I don't think it's worth the effort. */
3552 /* These hold text of the current and the previous menu help messages. */
3553 static char *menu_help_message
, *prev_menu_help_message
;
3554 /* Pane number and item number of the menu item which generated the
3555 last menu help message. */
3556 static int menu_help_paneno
, menu_help_itemno
;
3563 menu
= (XMenu
*) xmalloc (sizeof (XMenu
));
3564 menu
->allocated
= menu
->count
= menu
->panecount
= menu
->width
= 0;
3568 /* Allocate some (more) memory for MENU ensuring that there is room for one
3572 IT_menu_make_room (XMenu
*menu
)
3574 if (menu
->allocated
== 0)
3576 int count
= menu
->allocated
= 10;
3577 menu
->text
= (char **) xmalloc (count
* sizeof (char *));
3578 menu
->submenu
= (XMenu
**) xmalloc (count
* sizeof (XMenu
*));
3579 menu
->panenumber
= (int *) xmalloc (count
* sizeof (int));
3580 menu
->help_text
= (char **) xmalloc (count
* sizeof (char *));
3582 else if (menu
->allocated
== menu
->count
)
3584 int count
= menu
->allocated
= menu
->allocated
+ 10;
3586 = (char **) xrealloc (menu
->text
, count
* sizeof (char *));
3588 = (XMenu
**) xrealloc (menu
->submenu
, count
* sizeof (XMenu
*));
3590 = (int *) xrealloc (menu
->panenumber
, count
* sizeof (int));
3592 = (char **) xrealloc (menu
->help_text
, count
* sizeof (char *));
3596 /* Search the given menu structure for a given pane number. */
3599 IT_menu_search_pane (XMenu
*menu
, int pane
)
3604 for (i
= 0; i
< menu
->count
; i
++)
3605 if (menu
->submenu
[i
])
3607 if (pane
== menu
->panenumber
[i
])
3608 return menu
->submenu
[i
];
3609 if ((try = IT_menu_search_pane (menu
->submenu
[i
], pane
)))
3615 /* Determine how much screen space a given menu needs. */
3618 IT_menu_calc_size (XMenu
*menu
, int *width
, int *height
)
3620 int i
, h2
, w2
, maxsubwidth
, maxheight
;
3623 maxheight
= menu
->count
;
3624 for (i
= 0; i
< menu
->count
; i
++)
3626 if (menu
->submenu
[i
])
3628 IT_menu_calc_size (menu
->submenu
[i
], &w2
, &h2
);
3629 if (w2
> maxsubwidth
) maxsubwidth
= w2
;
3630 if (i
+ h2
> maxheight
) maxheight
= i
+ h2
;
3633 *width
= menu
->width
+ maxsubwidth
;
3634 *height
= maxheight
;
3637 /* Display MENU at (X,Y) using FACES. */
3640 IT_menu_display (XMenu
*menu
, int y
, int x
, int pn
, int *faces
, int disp_help
)
3642 int i
, j
, face
, width
;
3643 struct glyph
*text
, *p
;
3646 int enabled
, mousehere
;
3648 struct frame
*sf
= SELECTED_FRAME();
3650 menu_help_message
= NULL
;
3652 width
= menu
->width
;
3653 text
= (struct glyph
*) xmalloc ((width
+ 2) * sizeof (struct glyph
));
3654 ScreenGetCursor (&row
, &col
);
3655 mouse_get_xy (&mx
, &my
);
3656 IT_update_begin (sf
);
3657 for (i
= 0; i
< menu
->count
; i
++)
3659 int max_width
= width
+ 2;
3661 IT_cursor_to (y
+ i
, x
);
3663 = (!menu
->submenu
[i
] && menu
->panenumber
[i
]) || (menu
->submenu
[i
]);
3664 mousehere
= (y
+ i
== my
&& x
<= mx
&& mx
< x
+ width
+ 2);
3665 face
= faces
[enabled
+ mousehere
* 2];
3666 /* The following if clause means that we display the menu help
3667 strings even if the menu item is currently disabled. */
3668 if (disp_help
&& enabled
+ mousehere
* 2 >= 2)
3670 menu_help_message
= menu
->help_text
[i
];
3671 menu_help_paneno
= pn
- 1;
3672 menu_help_itemno
= i
;
3675 SET_CHAR_GLYPH (*p
, ' ', face
, 0);
3677 for (j
= 0, q
= menu
->text
[i
]; *q
; j
++)
3681 SET_CHAR_GLYPH (*p
, *q
++, face
, 0);
3684 else /* make '^x' */
3686 SET_CHAR_GLYPH (*p
, '^', face
, 0);
3689 SET_CHAR_GLYPH (*p
, *q
++ + 64, face
, 0);
3693 /* Don't let the menu text overflow into the next screen row. */
3694 if (x
+ max_width
> screen_size_X
)
3696 max_width
= screen_size_X
- x
;
3697 text
[max_width
- 1].u
.ch
= '$'; /* indicate it's truncated */
3699 for (; j
< max_width
- 2; j
++, p
++)
3700 SET_CHAR_GLYPH (*p
, ' ', face
, 0);
3702 SET_CHAR_GLYPH (*p
, menu
->submenu
[i
] ? 16 : ' ', face
, 0);
3704 IT_write_glyphs (text
, max_width
);
3707 IT_cursor_to (row
, col
);
3711 /* --------------------------- X Menu emulation ---------------------- */
3713 /* Report availability of menus. */
3721 /* Create a brand new menu structure. */
3724 XMenuCreate (Display
*foo1
, Window foo2
, char *foo3
)
3726 return IT_menu_create ();
3729 /* Create a new pane and place it on the outer-most level. It is not
3730 clear that it should be placed out there, but I don't know what else
3734 XMenuAddPane (Display
*foo
, XMenu
*menu
, char *txt
, int enable
)
3742 IT_menu_make_room (menu
);
3743 menu
->submenu
[menu
->count
] = IT_menu_create ();
3744 menu
->text
[menu
->count
] = txt
;
3745 menu
->panenumber
[menu
->count
] = ++menu
->panecount
;
3746 menu
->help_text
[menu
->count
] = NULL
;
3749 /* Adjust length for possible control characters (which will
3750 be written as ^x). */
3751 for (len
= strlen (txt
), p
= txt
; *p
; p
++)
3755 if (len
> menu
->width
)
3758 return menu
->panecount
;
3761 /* Create a new item in a menu pane. */
3764 XMenuAddSelection (Display
*bar
, XMenu
*menu
, int pane
,
3765 int foo
, char *txt
, int enable
, char *help_text
)
3771 if (!(menu
= IT_menu_search_pane (menu
, pane
)))
3773 IT_menu_make_room (menu
);
3774 menu
->submenu
[menu
->count
] = (XMenu
*) 0;
3775 menu
->text
[menu
->count
] = txt
;
3776 menu
->panenumber
[menu
->count
] = enable
;
3777 menu
->help_text
[menu
->count
] = help_text
;
3780 /* Adjust length for possible control characters (which will
3781 be written as ^x). */
3782 for (len
= strlen (txt
), p
= txt
; *p
; p
++)
3786 if (len
> menu
->width
)
3792 /* Decide where the menu would be placed if requested at (X,Y). */
3795 XMenuLocate (Display
*foo0
, XMenu
*menu
, int foo1
, int foo2
, int x
, int y
,
3796 int *ulx
, int *uly
, int *width
, int *height
)
3798 IT_menu_calc_size (menu
, width
, height
);
3804 struct IT_menu_state
3806 void *screen_behind
;
3813 /* Display menu, wait for user's response, and return that response. */
3816 XMenuActivate (Display
*foo
, XMenu
*menu
, int *pane
, int *selidx
,
3817 int x0
, int y0
, unsigned ButtonMask
, char **txt
,
3818 void (*help_callback
)(char *, int, int))
3820 struct IT_menu_state
*state
;
3825 Lisp_Object selectface
;
3826 int leave
, result
, onepane
;
3827 int title_faces
[4]; /* face to display the menu title */
3828 int buffers_num_deleted
= 0;
3829 struct frame
*sf
= SELECTED_FRAME();
3830 Lisp_Object saved_echo_area_message
;
3832 /* Just in case we got here without a mouse present... */
3833 if (have_mouse
<= 0)
3834 return XM_IA_SELECT
;
3835 /* Don't allow non-positive x0 and y0, lest the menu will wrap
3836 around the display. */
3842 /* We will process all the mouse events directly, so we had
3843 better prevent dos_rawgetc from stealing them from us. */
3846 state
= alloca (menu
->panecount
* sizeof (struct IT_menu_state
));
3847 screensize
= screen_size
* 2;
3849 = lookup_derived_face (sf
, intern ("msdos-menu-passive-face"),
3850 0, DEFAULT_FACE_ID
);
3852 = lookup_derived_face (sf
, intern ("msdos-menu-active-face"),
3853 0, DEFAULT_FACE_ID
);
3854 selectface
= intern ("msdos-menu-select-face");
3855 faces
[2] = lookup_derived_face (sf
, selectface
,
3857 faces
[3] = lookup_derived_face (sf
, selectface
,
3860 /* Make sure the menu title is always displayed with
3861 `msdos-menu-active-face', no matter where the mouse pointer is. */
3862 for (i
= 0; i
< 4; i
++)
3863 title_faces
[i
] = faces
[3];
3867 /* Don't let the title for the "Buffers" popup menu include a
3868 digit (which is ugly).
3870 This is a terrible kludge, but I think the "Buffers" case is
3871 the only one where the title includes a number, so it doesn't
3872 seem to be necessary to make this more general. */
3873 if (strncmp (menu
->text
[0], "Buffers 1", 9) == 0)
3875 menu
->text
[0][7] = '\0';
3876 buffers_num_deleted
= 1;
3879 /* We need to save the current echo area message, so that we could
3880 restore it below, before we exit. See the commentary below,
3881 before the call to message_with_string. */
3882 saved_echo_area_message
= Fcurrent_message ();
3883 state
[0].menu
= menu
;
3885 ScreenRetrieve (state
[0].screen_behind
= xmalloc (screensize
));
3887 /* Turn off the cursor. Otherwise it shows through the menu
3888 panes, which is ugly. */
3889 IT_display_cursor (0);
3891 /* Display the menu title. */
3892 IT_menu_display (menu
, y0
- 1, x0
- 1, 1, title_faces
, 0);
3893 if (buffers_num_deleted
)
3894 menu
->text
[0][7] = ' ';
3895 if ((onepane
= menu
->count
== 1 && menu
->submenu
[0]))
3897 menu
->width
= menu
->submenu
[0]->width
;
3898 state
[0].menu
= menu
->submenu
[0];
3902 state
[0].menu
= menu
;
3904 state
[0].x
= x0
- 1;
3906 state
[0].pane
= onepane
;
3908 mouse_last_x
= -1; /* A hack that forces display. */
3912 if (!mouse_visible
) mouse_on ();
3913 mouse_check_moved ();
3914 if (sf
->mouse_moved
)
3916 sf
->mouse_moved
= 0;
3917 result
= XM_IA_SELECT
;
3918 mouse_get_xy (&x
, &y
);
3919 for (i
= 0; i
< statecount
; i
++)
3920 if (state
[i
].x
<= x
&& x
< state
[i
].x
+ state
[i
].menu
->width
+ 2)
3922 int dy
= y
- state
[i
].y
;
3923 if (0 <= dy
&& dy
< state
[i
].menu
->count
)
3925 if (!state
[i
].menu
->submenu
[dy
])
3926 if (state
[i
].menu
->panenumber
[dy
])
3927 result
= XM_SUCCESS
;
3929 result
= XM_IA_SELECT
;
3930 *pane
= state
[i
].pane
- 1;
3932 /* We hit some part of a menu, so drop extra menus that
3933 have been opened. That does not include an open and
3935 if (i
!= statecount
- 2
3936 || state
[i
].menu
->submenu
[dy
] != state
[i
+1].menu
)
3937 while (i
!= statecount
- 1)
3941 ScreenUpdate (state
[statecount
].screen_behind
);
3942 if (screen_virtual_segment
)
3943 dosv_refresh_virtual_screen (0, screen_size
);
3944 xfree (state
[statecount
].screen_behind
);
3946 if (i
== statecount
- 1 && state
[i
].menu
->submenu
[dy
])
3948 IT_menu_display (state
[i
].menu
,
3953 state
[statecount
].menu
= state
[i
].menu
->submenu
[dy
];
3954 state
[statecount
].pane
= state
[i
].menu
->panenumber
[dy
];
3956 ScreenRetrieve (state
[statecount
].screen_behind
3957 = xmalloc (screensize
));
3959 = state
[i
].x
+ state
[i
].menu
->width
+ 2;
3960 state
[statecount
].y
= y
;
3965 IT_menu_display (state
[statecount
- 1].menu
,
3966 state
[statecount
- 1].y
,
3967 state
[statecount
- 1].x
,
3968 state
[statecount
- 1].pane
,
3973 if ((menu_help_message
|| prev_menu_help_message
)
3974 && menu_help_message
!= prev_menu_help_message
)
3976 help_callback (menu_help_message
,
3977 menu_help_paneno
, menu_help_itemno
);
3978 IT_display_cursor (0);
3979 prev_menu_help_message
= menu_help_message
;
3981 /* We are busy-waiting for the mouse to move, so let's be nice
3982 to other Windows applications by releasing our time slice. */
3985 for (b
= 0; b
< mouse_button_count
&& !leave
; b
++)
3987 /* Only leave if user both pressed and released the mouse, and in
3988 that order. This avoids popping down the menu pane unless
3989 the user is really done with it. */
3990 if (mouse_pressed (b
, &x
, &y
))
3992 while (mouse_button_depressed (b
, &x
, &y
))
3996 (void) mouse_released (b
, &x
, &y
);
4001 ScreenUpdate (state
[0].screen_behind
);
4002 if (screen_virtual_segment
)
4003 dosv_refresh_virtual_screen (0, screen_size
);
4005 /* We have a situation here. ScreenUpdate has just restored the
4006 screen contents as it was before we started drawing this menu.
4007 That includes any echo area message that could have been
4008 displayed back then. (In reality, that echo area message will
4009 almost always be the ``keystroke echo'' that echoes the sequence
4010 of menu items chosen by the user.) However, if the menu had some
4011 help messages, then displaying those messages caused Emacs to
4012 forget about the original echo area message. So when
4013 ScreenUpdate restored it, it created a discrepancy between the
4014 actual screen contents and what Emacs internal data structures
4017 To avoid this conflict, we force Emacs to restore the original
4018 echo area message as we found it when we entered this function.
4019 The irony of this is that we then erase the restored message
4020 right away, so the only purpose of restoring it is so that
4021 erasing it works correctly... */
4022 if (! NILP (saved_echo_area_message
))
4023 message_with_string ("%s", saved_echo_area_message
, 0);
4025 while (statecount
--)
4026 xfree (state
[statecount
].screen_behind
);
4027 IT_display_cursor (1); /* turn cursor back on */
4028 /* Clean up any mouse events that are waiting inside Emacs event queue.
4029 These events are likely to be generated before the menu was even
4030 displayed, probably because the user pressed and released the button
4031 (which invoked the menu) too quickly. If we don't remove these events,
4032 Emacs will process them after we return and surprise the user. */
4033 discard_mouse_events ();
4034 mouse_clear_clicks ();
4035 if (!kbd_buffer_events_waiting (1))
4036 clear_input_pending ();
4037 /* Allow mouse events generation by dos_rawgetc. */
4042 /* Dispose of a menu. */
4045 XMenuDestroy (Display
*foo
, XMenu
*menu
)
4048 if (menu
->allocated
)
4050 for (i
= 0; i
< menu
->count
; i
++)
4051 if (menu
->submenu
[i
])
4052 XMenuDestroy (foo
, menu
->submenu
[i
]);
4054 xfree (menu
->submenu
);
4055 xfree (menu
->panenumber
);
4056 xfree (menu
->help_text
);
4059 menu_help_message
= prev_menu_help_message
= NULL
;
4063 x_pixel_width (struct frame
*f
)
4065 return FRAME_WIDTH (f
);
4069 x_pixel_height (struct frame
*f
)
4071 return FRAME_HEIGHT (f
);
4073 #endif /* !HAVE_X_WINDOWS */
4075 /* ----------------------- DOS / UNIX conversion --------------------- */
4077 void msdos_downcase_filename (unsigned char *);
4079 /* Destructively turn backslashes into slashes. */
4082 dostounix_filename (p
)
4085 msdos_downcase_filename (p
);
4095 /* Destructively turn slashes into backslashes. */
4098 unixtodos_filename (p
)
4101 if (p
[1] == ':' && *p
>= 'A' && *p
<= 'Z')
4115 /* Get the default directory for a given drive. 0=def, 1=A, 2=B, ... */
4118 getdefdir (drive
, dst
)
4122 char in_path
[4], *p
= in_path
;
4125 /* Generate "X:." (when drive is X) or "." (when drive is 0). */
4128 *p
++ = drive
+ 'A' - 1;
4135 _fixpath (in_path
, dst
);
4136 /* _fixpath can set errno to ENOSYS on non-LFN systems because
4137 it queries the LFN support, so ignore that error. */
4138 if ((errno
&& errno
!= ENOSYS
) || *dst
== '\0')
4141 msdos_downcase_filename (dst
);
4148 emacs_root_dir (void)
4150 static char root_dir
[4];
4152 sprintf (root_dir
, "%c:/", 'A' + getdisk ());
4153 root_dir
[0] = tolower (root_dir
[0]);
4157 /* Remove all CR's that are followed by a LF. */
4162 register unsigned char *buf
;
4164 unsigned char *np
= buf
;
4165 unsigned char *startp
= buf
;
4166 unsigned char *endp
= buf
+ n
;
4170 while (buf
< endp
- 1)
4174 if (*(++buf
) != 0x0a)
4185 #if defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 0
4187 /* In DJGPP v2.0, library `write' can call `malloc', which might
4188 cause relocation of the buffer whose address we get in ADDR.
4189 Here is a version of `write' that avoids calling `malloc',
4190 to serve us until such time as the library is fixed.
4191 Actually, what we define here is called `__write', because
4192 `write' is a stub that just jmp's to `__write' (to be
4193 POSIXLY-correct with respect to the global name-space). */
4195 #include <io.h> /* for _write */
4196 #include <libc/dosio.h> /* for __file_handle_modes[] */
4198 static char xbuf
[64 * 1024]; /* DOS cannot write more in one chunk */
4200 #define XBUF_END (xbuf + sizeof (xbuf) - 1)
4203 __write (int handle
, const void *buffer
, size_t count
)
4208 if(__file_handle_modes
[handle
] & O_BINARY
)
4209 return _write (handle
, buffer
, count
);
4213 const char *bp
= buffer
;
4214 int total_written
= 0;
4215 int nmoved
= 0, ncr
= 0;
4219 /* The next test makes sure there's space for at least 2 more
4220 characters in xbuf[], so both CR and LF can be put there. */
4232 if (xbp
>= XBUF_END
|| !count
)
4234 size_t to_write
= nmoved
+ ncr
;
4235 int written
= _write (handle
, xbuf
, to_write
);
4240 total_written
+= nmoved
; /* CRs aren't counted in ret value */
4242 /* If some, but not all were written (disk full?), return
4243 an estimate of the total written bytes not counting CRs. */
4244 if (written
< to_write
)
4245 return total_written
- (to_write
- written
) * nmoved
/to_write
;
4252 return total_written
;
4256 /* A low-level file-renaming function which works around Windows 95 bug.
4257 This is pulled directly out of DJGPP v2.01 library sources, and only
4258 used when you compile with DJGPP v2.0. */
4262 int _rename(const char *old
, const char *new)
4265 int olen
= strlen(old
) + 1;
4267 int use_lfn
= _USE_LFN
;
4268 char tempfile
[FILENAME_MAX
];
4269 const char *orig
= old
;
4272 r
.x
.dx
= __tb_offset
;
4273 r
.x
.di
= __tb_offset
+ olen
;
4274 r
.x
.ds
= r
.x
.es
= __tb_segment
;
4278 /* Windows 95 bug: for some filenames, when you rename
4279 file -> file~ (as in Emacs, to leave a backup), the
4280 short 8+3 alias doesn't change, which effectively
4281 makes OLD and NEW the same file. We must rename
4282 through a temporary file to work around this. */
4284 char *pbase
= 0, *p
;
4285 static char try_char
[] = "abcdefghijklmnopqrstuvwxyz012345789";
4286 int idx
= sizeof(try_char
) - 1;
4288 /* Generate a temporary name. Can't use `tmpnam', since $TMPDIR
4289 might point to another drive, which will fail the DOS call. */
4290 strcpy(tempfile
, old
);
4291 for (p
= tempfile
; *p
; p
++) /* ensure temporary is on the same drive */
4292 if (*p
== '/' || *p
== '\\' || *p
== ':')
4298 strcpy(pbase
, "X$$djren$$.$$temp$$");
4304 *pbase
= try_char
[--idx
];
4305 } while (_chmod(tempfile
, 0) != -1);
4308 _put_path2(tempfile
, olen
);
4310 __dpmi_int(0x21, &r
);
4313 errno
= __doserr_to_errno(r
.x
.ax
);
4317 /* Now create a file with the original name. This will
4318 ensure that NEW will always have a 8+3 alias
4319 different from that of OLD. (Seems to be required
4320 when NameNumericTail in the Registry is set to 0.) */
4321 lfn_fd
= _creat(old
, 0);
4323 olen
= strlen(tempfile
) + 1;
4325 r
.x
.di
= __tb_offset
+ olen
;
4334 _put_path2(new, olen
);
4336 __dpmi_int(0x21, &r
);
4339 if (r
.x
.ax
== 5 && i
== 0) /* access denied */
4340 remove(new); /* and try again */
4343 errno
= __doserr_to_errno(r
.x
.ax
);
4345 /* Restore to original name if we renamed it to temporary. */
4353 _put_path2(orig
, olen
);
4354 _put_path(tempfile
);
4356 __dpmi_int(0x21, &r
);
4365 /* Success. Delete the file possibly created to work
4366 around the Windows 95 bug. */
4368 return (_close (lfn_fd
) == 0) ? remove (orig
) : -1;
4372 #endif /* __DJGPP__ == 2 && __DJGPP_MINOR__ == 0 */
4374 DEFUN ("msdos-long-file-names", Fmsdos_long_file_names
, Smsdos_long_file_names
,
4376 doc
: /* Return non-nil if long file names are supported on MSDOS. */)
4379 return (_USE_LFN
? Qt
: Qnil
);
4382 /* Convert alphabetic characters in a filename to lower-case. */
4385 msdos_downcase_filename (p
)
4386 register unsigned char *p
;
4388 /* Always lower-case drive letters a-z, even if the filesystem
4389 preserves case in filenames.
4390 This is so MSDOS filenames could be compared by string comparison
4391 functions that are case-sensitive. Even case-preserving filesystems
4392 do not distinguish case in drive letters. */
4393 if (p
[1] == ':' && *p
>= 'A' && *p
<= 'Z')
4399 /* Under LFN we expect to get pathnames in their true case. */
4400 if (NILP (Fmsdos_long_file_names ()))
4402 if (*p
>= 'A' && *p
<= 'Z')
4406 DEFUN ("msdos-downcase-filename", Fmsdos_downcase_filename
, Smsdos_downcase_filename
,
4408 doc
: /* Convert alphabetic characters in FILENAME to lower case and return that.
4409 When long filenames are supported, doesn't change FILENAME.
4410 If FILENAME is not a string, returns nil.
4411 The argument object is never altered--the value is a copy. */)
4413 Lisp_Object filename
;
4417 if (! STRINGP (filename
))
4420 tem
= Fcopy_sequence (filename
);
4421 msdos_downcase_filename (XSTRING (tem
)->data
);
4425 /* The Emacs root directory as determined by init_environment. */
4427 static char emacsroot
[MAXPATHLEN
];
4430 rootrelativepath (rel
)
4433 static char result
[MAXPATHLEN
+ 10];
4435 strcpy (result
, emacsroot
);
4436 strcat (result
, "/");
4437 strcat (result
, rel
);
4441 /* Define a lot of environment variables if not already defined. Don't
4442 remove anything unless you know what you're doing -- lots of code will
4443 break if one or more of these are missing. */
4446 init_environment (argc
, argv
, skip_args
)
4453 static const char * const tempdirs
[] = {
4454 "$TMPDIR", "$TEMP", "$TMP", "c:/"
4457 const int imax
= sizeof (tempdirs
) / sizeof (tempdirs
[0]);
4459 /* Make sure they have a usable $TMPDIR. Many Emacs functions use
4460 temporary files and assume "/tmp" if $TMPDIR is unset, which
4461 will break on DOS/Windows. Refuse to work if we cannot find
4462 a directory, not even "c:/", usable for that purpose. */
4463 for (i
= 0; i
< imax
; i
++)
4465 const char *tmp
= tempdirs
[i
];
4468 tmp
= getenv (tmp
+ 1);
4469 /* Note that `access' can lie to us if the directory resides on a
4470 read-only filesystem, like CD-ROM or a write-protected floppy.
4471 The only way to be really sure is to actually create a file and
4472 see if it succeeds. But I think that's too much to ask. */
4473 if (tmp
&& access (tmp
, D_OK
) == 0)
4475 setenv ("TMPDIR", tmp
, 1);
4482 Fcons (build_string ("no usable temporary directories found!!"),
4484 "While setting TMPDIR: ");
4486 /* Note the startup time, so we know not to clear the screen if we
4487 exit immediately; see IT_reset_terminal_modes.
4488 (Yes, I know `clock' returns zero the first time it's called, but
4489 I do this anyway, in case some wiseguy changes that at some point.) */
4490 startup_time
= clock ();
4492 /* Find our root from argv[0]. Assuming argv[0] is, say,
4493 "c:/emacs/bin/emacs.exe" our root will be "c:/emacs". */
4494 root
= alloca (MAXPATHLEN
+ 20);
4495 _fixpath (argv
[0], root
);
4496 msdos_downcase_filename (root
);
4497 len
= strlen (root
);
4498 while (len
> 0 && root
[len
] != '/' && root
[len
] != ':')
4502 && (strcmp (root
+ len
- 4, "/bin") == 0
4503 || strcmp (root
+ len
- 4, "/src") == 0)) /* under a debugger */
4504 root
[len
- 4] = '\0';
4506 strcpy (root
, "c:/emacs"); /* let's be defensive */
4507 len
= strlen (root
);
4508 strcpy (emacsroot
, root
);
4510 /* We default HOME to our root. */
4511 setenv ("HOME", root
, 0);
4513 /* We default EMACSPATH to root + "/bin". */
4514 strcpy (root
+ len
, "/bin");
4515 setenv ("EMACSPATH", root
, 0);
4517 /* I don't expect anybody to ever use other terminals so the internal
4518 terminal is the default. */
4519 setenv ("TERM", "internal", 0);
4521 #ifdef HAVE_X_WINDOWS
4522 /* Emacs expects DISPLAY to be set. */
4523 setenv ("DISPLAY", "unix:0.0", 0);
4526 /* SHELL is a bit tricky -- COMSPEC is the closest we come, but we must
4527 downcase it and mirror the backslashes. */
4528 s
= getenv ("COMSPEC");
4529 if (!s
) s
= "c:/command.com";
4530 t
= alloca (strlen (s
) + 1);
4532 dostounix_filename (t
);
4533 setenv ("SHELL", t
, 0);
4535 /* PATH is also downcased and backslashes mirrored. */
4536 s
= getenv ("PATH");
4538 t
= alloca (strlen (s
) + 3);
4539 /* Current directory is always considered part of MsDos's path but it is
4540 not normally mentioned. Now it is. */
4541 strcat (strcpy (t
, ".;"), s
);
4542 dostounix_filename (t
); /* Not a single file name, but this should work. */
4543 setenv ("PATH", t
, 1);
4545 /* In some sense all dos users have root privileges, so... */
4546 setenv ("USER", "root", 0);
4547 setenv ("NAME", getenv ("USER"), 0);
4549 /* Time zone determined from country code. To make this possible, the
4550 country code may not span more than one time zone. In other words,
4551 in the USA, you lose. */
4553 switch (dos_country_code
)
4555 case 31: /* Belgium */
4556 case 32: /* The Netherlands */
4557 case 33: /* France */
4558 case 34: /* Spain */
4559 case 36: /* Hungary */
4560 case 38: /* Yugoslavia (or what's left of it?) */
4561 case 39: /* Italy */
4562 case 41: /* Switzerland */
4563 case 42: /* Tjekia */
4564 case 45: /* Denmark */
4565 case 46: /* Sweden */
4566 case 47: /* Norway */
4567 case 48: /* Poland */
4568 case 49: /* Germany */
4569 /* Daylight saving from last Sunday in March to last Sunday in
4570 September, both at 2AM. */
4571 setenv ("TZ", "MET-01METDST-02,M3.5.0/02:00,M9.5.0/02:00", 0);
4573 case 44: /* United Kingdom */
4574 case 351: /* Portugal */
4575 case 354: /* Iceland */
4576 setenv ("TZ", "GMT+00", 0);
4578 case 81: /* Japan */
4579 case 82: /* Korea */
4580 setenv ("TZ", "JST-09", 0);
4582 case 90: /* Turkey */
4583 case 358: /* Finland */
4584 setenv ("TZ", "EET-02", 0);
4586 case 972: /* Israel */
4587 /* This is an approximation. (For exact rules, use the
4588 `zoneinfo/israel' file which comes with DJGPP, but you need
4589 to install it in `/usr/share/zoneinfo/' directory first.) */
4590 setenv ("TZ", "IST-02IDT-03,M4.1.6/00:00,M9.5.6/01:00", 0);
4598 static int break_stat
; /* BREAK check mode status. */
4599 static int stdin_stat
; /* stdin IOCTL status. */
4603 /* These must be global. */
4604 static _go32_dpmi_seginfo ctrl_break_vector
;
4605 static _go32_dpmi_registers ctrl_break_regs
;
4606 static int ctrlbreakinstalled
= 0;
4608 /* Interrupt level detection of Ctrl-Break. Don't do anything fancy here! */
4611 ctrl_break_func (regs
)
4612 _go32_dpmi_registers
*regs
;
4618 install_ctrl_break_check ()
4620 if (!ctrlbreakinstalled
)
4622 /* Don't press Ctrl-Break if you don't have either DPMI or Emacs
4623 was compiler with Djgpp 1.11 maintenance level 5 or later! */
4624 ctrlbreakinstalled
= 1;
4625 ctrl_break_vector
.pm_offset
= (int) ctrl_break_func
;
4626 _go32_dpmi_allocate_real_mode_callback_iret (&ctrl_break_vector
,
4628 _go32_dpmi_set_real_mode_interrupt_vector (0x1b, &ctrl_break_vector
);
4632 #endif /* __DJGPP__ < 2 */
4634 /* Turn off Dos' Ctrl-C checking and inhibit interpretation of
4635 control chars by DOS. Determine the keyboard type. */
4640 union REGS inregs
, outregs
;
4641 static int first_time
= 1;
4643 break_stat
= getcbrk ();
4646 install_ctrl_break_check ();
4652 int86 (0x15, &inregs
, &outregs
);
4653 extended_kbd
= (!outregs
.x
.cflag
) && (outregs
.h
.ah
== 0);
4657 if (internal_terminal
4658 #ifdef HAVE_X_WINDOWS
4659 && inhibit_window_system
4663 inregs
.x
.ax
= 0x0021;
4664 int86 (0x33, &inregs
, &outregs
);
4665 have_mouse
= (outregs
.x
.ax
& 0xffff) == 0xffff;
4668 /* Reportedly, the above doesn't work for some mouse drivers. There
4669 is an additional detection method that should work, but might be
4670 a little slower. Use that as an alternative. */
4671 inregs
.x
.ax
= 0x0000;
4672 int86 (0x33, &inregs
, &outregs
);
4673 have_mouse
= (outregs
.x
.ax
& 0xffff) == 0xffff;
4678 have_mouse
= 1; /* enable mouse */
4680 mouse_setup_buttons (outregs
.x
.bx
);
4681 mouse_position_hook
= &mouse_get_pos
;
4685 #ifndef HAVE_X_WINDOWS
4687 /* Save the cursor shape used outside Emacs. */
4688 outside_cursor
= _farpeekw (_dos_ds
, 0x460);
4697 stdin_stat
= setmode (fileno (stdin
), O_BINARY
);
4698 return (stdin_stat
!= -1);
4701 return (setmode (fileno (stdin
), O_BINARY
) != -1);
4703 #else /* __DJGPP__ < 2 */
4707 /* I think it is wrong to overwrite `stdin_stat' every time
4708 but the first one this function is called, but I don't
4709 want to change the way it used to work in v1.x.--EZ */
4711 inregs
.x
.ax
= 0x4400; /* Get IOCTL status. */
4712 inregs
.x
.bx
= 0x00; /* 0 = stdin. */
4713 intdos (&inregs
, &outregs
);
4714 stdin_stat
= outregs
.h
.dl
;
4716 inregs
.x
.dx
= stdin_stat
| 0x0020; /* raw mode */
4717 inregs
.x
.ax
= 0x4401; /* Set IOCTL status */
4718 intdos (&inregs
, &outregs
);
4719 return !outregs
.x
.cflag
;
4721 #endif /* __DJGPP__ < 2 */
4724 /* Restore status of standard input and Ctrl-C checking. */
4729 union REGS inregs
, outregs
;
4731 setcbrk (break_stat
);
4736 #ifndef HAVE_X_WINDOWS
4737 /* Restore the cursor shape we found on startup. */
4741 inregs
.x
.cx
= outside_cursor
;
4742 int86 (0x10, &inregs
, &outregs
);
4746 return (setmode (fileno (stdin
), stdin_stat
) != -1);
4748 #else /* not __DJGPP__ >= 2 */
4750 inregs
.x
.ax
= 0x4401; /* Set IOCTL status. */
4751 inregs
.x
.bx
= 0x00; /* 0 = stdin. */
4752 inregs
.x
.dx
= stdin_stat
;
4753 intdos (&inregs
, &outregs
);
4754 return !outregs
.x
.cflag
;
4756 #endif /* not __DJGPP__ >= 2 */
4760 /* Run command as specified by ARGV in directory DIR.
4761 The command is run with input from TEMPIN, output to
4762 file TEMPOUT and stderr to TEMPERR. */
4765 run_msdos_command (argv
, working_dir
, tempin
, tempout
, temperr
, envv
)
4766 unsigned char **argv
;
4767 const char *working_dir
;
4768 int tempin
, tempout
, temperr
;
4771 char *saveargv1
, *saveargv2
, *lowcase_argv0
, *pa
, *pl
;
4772 char oldwd
[MAXPATHLEN
+ 1]; /* Fixed size is safe on MSDOS. */
4773 int msshell
, result
= -1;
4774 int inbak
, outbak
, errbak
;
4778 /* Get current directory as MSDOS cwd is not per-process. */
4781 /* If argv[0] is the shell, it might come in any lettercase.
4782 Since `Fmember' is case-sensitive, we need to downcase
4783 argv[0], even if we are on case-preserving filesystems. */
4784 lowcase_argv0
= alloca (strlen (argv
[0]) + 1);
4785 for (pa
= argv
[0], pl
= lowcase_argv0
; *pa
; pl
++)
4788 if (*pl
>= 'A' && *pl
<= 'Z')
4793 cmd
= Ffile_name_nondirectory (build_string (lowcase_argv0
));
4794 msshell
= !NILP (Fmember (cmd
, Fsymbol_value (intern ("msdos-shells"))))
4795 && !strcmp ("-c", argv
[1]);
4798 saveargv1
= argv
[1];
4799 saveargv2
= argv
[2];
4801 /* We only need to mirror slashes if a DOS shell will be invoked
4802 not via `system' (which does the mirroring itself). Yes, that
4803 means DJGPP v1.x will lose here. */
4804 if (argv
[2] && argv
[3])
4806 char *p
= alloca (strlen (argv
[2]) + 1);
4808 strcpy (argv
[2] = p
, saveargv2
);
4809 while (*p
&& isspace (*p
))
4821 chdir (working_dir
);
4825 if (inbak
< 0 || outbak
< 0 || errbak
< 0)
4826 goto done
; /* Allocation might fail due to lack of descriptors. */
4829 mouse_get_xy (&x
, &y
);
4831 dos_ttcooked (); /* do it here while 0 = stdin */
4839 if (msshell
&& !argv
[3])
4841 /* MS-DOS native shells are too restrictive. For starters, they
4842 cannot grok commands longer than 126 characters. In DJGPP v2
4843 and later, `system' is much smarter, so we'll call it instead. */
4847 /* A shell gets a single argument--its full command
4848 line--whose original was saved in `saveargv2'. */
4850 /* Don't let them pass empty command lines to `system', since
4851 with some shells it will try to invoke an interactive shell,
4852 which will hang Emacs. */
4853 for (cmnd
= saveargv2
; *cmnd
&& isspace (*cmnd
); cmnd
++)
4857 extern char **environ
;
4858 char **save_env
= environ
;
4859 int save_system_flags
= __system_flags
;
4861 /* Request the most powerful version of `system'. We need
4862 all the help we can get to avoid calling stock DOS shells. */
4863 __system_flags
= (__system_redirect
4864 | __system_use_shell
4865 | __system_allow_multiple_cmds
4866 | __system_allow_long_cmds
4867 | __system_handle_null_commands
4868 | __system_emulate_chdir
);
4871 result
= system (cmnd
);
4872 __system_flags
= save_system_flags
;
4876 result
= 0; /* emulate Unixy shell behavior with empty cmd line */
4880 #endif /* __DJGPP__ > 1 */
4882 result
= spawnve (P_WAIT
, argv
[0], argv
, envv
);
4887 emacs_close (inbak
);
4888 emacs_close (outbak
);
4889 emacs_close (errbak
);
4895 mouse_moveto (x
, y
);
4898 /* Some programs might change the meaning of the highest bit of the
4899 text attribute byte, so we get blinking characters instead of the
4900 bright background colors. Restore that. */
4907 argv
[1] = saveargv1
;
4908 argv
[2] = saveargv2
;
4916 fprintf (stderr
, "%s not yet implemented\r\n", badfunc
);
4923 /* ------------------------- Compatibility functions -------------------
4928 /* Hostnames for a pc are not really funny,
4929 but they are used in change log so we emulate the best we can. */
4931 gethostname (p
, size
)
4935 char *q
= egetenv ("HOSTNAME");
4942 /* When time zones are set from Ms-Dos too many C-libraries are playing
4943 tricks with time values. We solve this by defining our own version
4944 of `gettimeofday' bypassing GO32. Our version needs to be initialized
4945 once and after each call to `tzset' with TZ changed. That is
4946 accomplished by aliasing tzset to init_gettimeofday. */
4948 static struct tm time_rec
;
4951 gettimeofday (struct timeval
*tp
, struct timezone
*tzp
)
4959 if (t
.ti_hour
< time_rec
.tm_hour
) /* midnight wrap */
4963 time_rec
.tm_year
= d
.da_year
- 1900;
4964 time_rec
.tm_mon
= d
.da_mon
- 1;
4965 time_rec
.tm_mday
= d
.da_day
;
4968 time_rec
.tm_hour
= t
.ti_hour
;
4969 time_rec
.tm_min
= t
.ti_min
;
4970 time_rec
.tm_sec
= t
.ti_sec
;
4973 tm
.tm_gmtoff
= dos_timezone_offset
;
4975 tp
->tv_sec
= mktime (&tm
); /* may modify tm */
4976 tp
->tv_usec
= t
.ti_hund
* (1000000 / 100);
4978 /* Ignore tzp; it's obsolescent. */
4982 #endif /* __DJGPP__ < 2 */
4985 * A list of unimplemented functions that we silently ignore.
4989 unsigned alarm (s
) unsigned s
; {}
4990 fork () { return 0; }
4991 int kill (x
, y
) int x
, y
; { return -1; }
4993 void volatile pause () {}
4994 sigsetmask (x
) int x
; { return 0; }
4995 sigblock (mask
) int mask
; { return 0; }
4998 void request_sigio (void) {}
4999 setpgrp () {return 0; }
5000 setpriority (x
,y
,z
) int x
,y
,z
; { return 0; }
5001 void unrequest_sigio (void) {}
5005 #ifdef POSIX_SIGNALS
5007 /* Augment DJGPP library POSIX signal functions. This is needed
5008 as of DJGPP v2.01, but might be in the library in later releases. */
5010 #include <libc/bss.h>
5012 /* A counter to know when to re-initialize the static sets. */
5013 static int sigprocmask_count
= -1;
5015 /* Which signals are currently blocked (initially none). */
5016 static sigset_t current_mask
;
5018 /* Which signals are pending (initially none). */
5019 static sigset_t pending_signals
;
5021 /* Previous handlers to restore when the blocked signals are unblocked. */
5022 typedef void (*sighandler_t
)(int);
5023 static sighandler_t prev_handlers
[320];
5025 /* A signal handler which just records that a signal occured
5026 (it will be raised later, if and when the signal is unblocked). */
5028 sig_suspender (signo
)
5031 sigaddset (&pending_signals
, signo
);
5035 sigprocmask (how
, new_set
, old_set
)
5037 const sigset_t
*new_set
;
5043 /* If called for the first time, initialize. */
5044 if (sigprocmask_count
!= __bss_count
)
5046 sigprocmask_count
= __bss_count
;
5047 sigemptyset (&pending_signals
);
5048 sigemptyset (¤t_mask
);
5049 for (signo
= 0; signo
< 320; signo
++)
5050 prev_handlers
[signo
] = SIG_ERR
;
5054 *old_set
= current_mask
;
5059 if (how
!= SIG_BLOCK
&& how
!= SIG_UNBLOCK
&& how
!= SIG_SETMASK
)
5065 sigemptyset (&new_mask
);
5067 /* DJGPP supports upto 320 signals. */
5068 for (signo
= 0; signo
< 320; signo
++)
5070 if (sigismember (¤t_mask
, signo
))
5071 sigaddset (&new_mask
, signo
);
5072 else if (sigismember (new_set
, signo
) && how
!= SIG_UNBLOCK
)
5074 sigaddset (&new_mask
, signo
);
5076 /* SIGKILL is silently ignored, as on other platforms. */
5077 if (signo
!= SIGKILL
&& prev_handlers
[signo
] == SIG_ERR
)
5078 prev_handlers
[signo
] = signal (signo
, sig_suspender
);
5080 if (( how
== SIG_UNBLOCK
5081 && sigismember (&new_mask
, signo
)
5082 && sigismember (new_set
, signo
))
5083 || (how
== SIG_SETMASK
5084 && sigismember (&new_mask
, signo
)
5085 && !sigismember (new_set
, signo
)))
5087 sigdelset (&new_mask
, signo
);
5088 if (prev_handlers
[signo
] != SIG_ERR
)
5090 signal (signo
, prev_handlers
[signo
]);
5091 prev_handlers
[signo
] = SIG_ERR
;
5093 if (sigismember (&pending_signals
, signo
))
5095 sigdelset (&pending_signals
, signo
);
5100 current_mask
= new_mask
;
5104 #else /* not POSIX_SIGNALS */
5106 sigsetmask (x
) int x
; { return 0; }
5107 sigblock (mask
) int mask
; { return 0; }
5109 #endif /* not POSIX_SIGNALS */
5110 #endif /* __DJGPP__ > 1 */
5113 #include "sysselect.h"
5115 #ifndef EMACS_TIME_ZERO_OR_NEG_P
5116 #define EMACS_TIME_ZERO_OR_NEG_P(time) \
5117 ((long)(time).tv_sec < 0 \
5118 || ((time).tv_sec == 0 \
5119 && (long)(time).tv_usec <= 0))
5122 /* This yields the rest of the current time slice to the task manager.
5123 It should be called by any code which knows that it has nothing
5124 useful to do except idle.
5126 I don't use __dpmi_yield here, since versions of library before 2.02
5127 called Int 2Fh/AX=1680h there in a way that would wedge the DOS box
5128 on some versions of Windows 9X. */
5131 dos_yield_time_slice (void)
5133 _go32_dpmi_registers r
;
5136 r
.x
.ss
= r
.x
.sp
= r
.x
.flags
= 0;
5137 _go32_dpmi_simulate_int (0x2f, &r
);
5142 /* Only event queue is checked. */
5143 /* We don't have to call timer_check here
5144 because wait_reading_process_input takes care of that. */
5146 sys_select (nfds
, rfds
, wfds
, efds
, timeout
)
5148 SELECT_TYPE
*rfds
, *wfds
, *efds
;
5149 EMACS_TIME
*timeout
;
5157 check_input
= FD_ISSET (0, rfds
);
5168 /* If we are looking only for the terminal, with no timeout,
5169 just read it and wait -- that's more efficient. */
5172 while (!detect_input_pending ())
5174 dos_yield_time_slice ();
5179 EMACS_TIME clnow
, cllast
, cldiff
;
5182 EMACS_SET_SECS_USECS (cllast
, t
.ti_sec
, t
.ti_hund
* 10000L);
5184 while (!check_input
|| !detect_input_pending ())
5187 EMACS_SET_SECS_USECS (clnow
, t
.ti_sec
, t
.ti_hund
* 10000L);
5188 EMACS_SUB_TIME (cldiff
, clnow
, cllast
);
5190 /* When seconds wrap around, we assume that no more than
5191 1 minute passed since last `gettime'. */
5192 if (EMACS_TIME_NEG_P (cldiff
))
5193 EMACS_SET_SECS (cldiff
, EMACS_SECS (cldiff
) + 60);
5194 EMACS_SUB_TIME (*timeout
, *timeout
, cldiff
);
5196 /* Stop when timeout value crosses zero. */
5197 if (EMACS_TIME_ZERO_OR_NEG_P (*timeout
))
5200 dos_yield_time_slice ();
5210 * Define overlaid functions:
5212 * chdir -> sys_chdir
5213 * tzset -> init_gettimeofday
5214 * abort -> dos_abort
5219 extern int chdir ();
5225 int len
= strlen (path
);
5226 char *tmp
= (char *)path
;
5228 if (*tmp
&& tmp
[1] == ':')
5230 if (getdisk () != tolower (tmp
[0]) - 'a')
5231 setdisk (tolower (tmp
[0]) - 'a');
5232 tmp
+= 2; /* strip drive: KFS 1995-07-06 */
5236 if (len
> 1 && (tmp
[len
- 1] == '/'))
5238 char *tmp1
= (char *) alloca (len
+ 1);
5249 extern void tzset (void);
5252 init_gettimeofday ()
5258 ltm
= gtm
= time (NULL
);
5259 ltm
= mktime (lstm
= localtime (<m
));
5260 gtm
= mktime (gmtime (>m
));
5261 time_rec
.tm_hour
= 99; /* force gettimeofday to get date */
5262 time_rec
.tm_isdst
= lstm
->tm_isdst
;
5263 dos_timezone_offset
= time_rec
.tm_gmtoff
= (int)(gtm
- ltm
) / 60;
5270 dos_abort (file
, line
)
5274 char buffer1
[200], buffer2
[400];
5277 sprintf (buffer1
, "<EMACS FATAL ERROR IN %s LINE %d>", file
, line
);
5278 for (i
= j
= 0; buffer1
[i
]; i
++) {
5279 buffer2
[j
++] = buffer1
[i
];
5280 buffer2
[j
++] = 0x70;
5282 dosmemput (buffer2
, j
, (int)ScreenPrimary
);
5283 ScreenSetCursor (2, 0);
5291 ScreenSetCursor (10, 0);
5292 cputs ("\r\n\nEmacs aborted!\r\n");
5294 #if __DJGPP__ == 2 && __DJGPP_MINOR__ < 2
5295 if (screen_virtual_segment
)
5296 dosv_refresh_virtual_screen (2 * 10 * screen_size_X
, 4 * screen_size_X
);
5297 /* Generate traceback, so we could tell whodunit. */
5298 signal (SIGINT
, SIG_DFL
);
5299 __asm__
__volatile__ ("movb $0x1b,%al;call ___djgpp_hw_exception");
5300 #else /* __DJGPP_MINOR__ >= 2 */
5302 #endif /* __DJGPP_MINOR__ >= 2 */
5308 /* The following variables are required so that cus-start.el won't
5309 complain about unbound variables. */
5310 #ifndef subprocesses
5311 /* Nonzero means delete a process right away if it exits (process.c). */
5312 static int delete_exited_processes
;
5317 recent_doskeys
= Fmake_vector (make_number (NUM_RECENT_DOSKEYS
), Qnil
);
5318 staticpro (&recent_doskeys
);
5319 #ifndef HAVE_X_WINDOWS
5321 staticpro (&help_echo
);
5322 help_echo_object
= Qnil
;
5323 staticpro (&help_echo_object
);
5324 help_echo_window
= Qnil
;
5325 staticpro (&help_echo_window
);
5326 previous_help_echo
= Qnil
;
5327 staticpro (&previous_help_echo
);
5330 /* The following two are from xfns.c: */
5331 Qbar
= intern ("bar");
5333 Qcursor_type
= intern ("cursor-type");
5334 staticpro (&Qcursor_type
);
5335 Qreverse
= intern ("reverse");
5336 staticpro (&Qreverse
);
5338 DEFVAR_LISP ("dos-unsupported-char-glyph", &Vdos_unsupported_char_glyph
,
5339 doc
: /* *Glyph to display instead of chars not supported by current codepage.
5341 This variable is used only by MSDOS terminals. */);
5342 Vdos_unsupported_char_glyph
= '\177';
5344 DEFVAR_BOOL ("x-autoselect-window", &x_autoselect_window_p
,
5345 doc
: /* *Non-nil means autoselect window with mouse pointer. */);
5346 x_autoselect_window_p
= 0;
5348 #ifndef subprocesses
5349 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
5350 doc
: /* *Non-nil means delete processes immediately when they exit.
5351 nil means don't delete them until `list-processes' is run. */);
5352 delete_exited_processes
= 0;
5355 defsubr (&Srecent_doskeys
);
5356 defsubr (&Smsdos_long_file_names
);
5357 defsubr (&Smsdos_downcase_filename
);
5358 defsubr (&Smsdos_remember_default_colors
);
5359 defsubr (&Smsdos_set_mouse_buttons
);