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 /* If non-nil, dos_rawgetc generates an event to display that string.
1185 (The display is done in keyboard.c:read_char, by calling
1187 static Lisp_Object help_echo
;
1188 static Lisp_Object previous_help_echo
; /* a helper temporary variable */
1190 /* These record the window, the object and the position where the help
1191 echo string was generated. */
1192 static Lisp_Object help_echo_window
;
1193 static Lisp_Object help_echo_object
;
1194 static int help_echo_pos
;
1196 /* Non-zero means automatically select any window when the mouse
1197 cursor moves into it. */
1198 int x_autoselect_window_p
;
1200 /* Last window where we saw the mouse. Used by x-autoselect-window. */
1201 static Lisp_Object last_mouse_window
;
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 if (dpyinfo
->mouse_face_hidden
)
1243 goto set_cursor_shape
;
1245 fp
= FACE_FROM_ID (SELECTED_FRAME(), dpyinfo
->mouse_face_face_id
);
1247 goto set_cursor_shape
;
1250 /* Note that mouse_face_beg_row etc. are window relative. */
1251 for (i
= dpyinfo
->mouse_face_beg_row
;
1252 i
<= dpyinfo
->mouse_face_end_row
;
1255 int start_hpos
, end_hpos
;
1256 struct glyph_row
*row
= MATRIX_ROW (w
->current_matrix
, i
);
1258 /* Don't do anything if row doesn't have valid contents. */
1259 if (!row
->enabled_p
)
1262 /* For all but the first row, the highlight starts at column 0. */
1263 if (i
== dpyinfo
->mouse_face_beg_row
)
1264 start_hpos
= dpyinfo
->mouse_face_beg_col
;
1268 if (i
== dpyinfo
->mouse_face_end_row
)
1269 end_hpos
= dpyinfo
->mouse_face_end_col
;
1271 end_hpos
= row
->used
[TEXT_AREA
];
1273 if (end_hpos
<= start_hpos
)
1275 /* Record that some glyphs of this row are displayed in
1277 row
->mouse_face_p
= hl
> 0;
1280 int vpos
= row
->y
+ WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w
);
1281 int kstart
= start_hpos
+ WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w
);
1282 int nglyphs
= end_hpos
- start_hpos
;
1283 int offset
= ScreenPrimary
+ 2*(vpos
*screen_size_X
+ kstart
) + 1;
1284 int start_offset
= offset
;
1287 fprintf (termscript
, "\n<MH+ %d-%d:%d>",
1288 kstart
, kstart
+ nglyphs
- 1, vpos
);
1291 IT_set_face (dpyinfo
->mouse_face_face_id
);
1292 /* Since we are going to change only the _colors_ of the
1293 displayed text, there's no need to go through all the
1294 pain of generating and encoding the text from the glyphs.
1295 Instead, we simply poke the attribute byte of each
1296 affected position in video memory with the colors
1297 computed by IT_set_face! */
1298 _farsetsel (_dos_ds
);
1301 _farnspokeb (offset
, ScreenAttrib
);
1304 if (screen_virtual_segment
)
1305 dosv_refresh_virtual_screen (start_offset
, end_hpos
- start_hpos
);
1310 /* We are removing a previously-drawn mouse highlight. The
1311 safest way to do so is to redraw the glyphs anew, since
1312 all kinds of faces and display tables could have changed
1314 int nglyphs
= end_hpos
- start_hpos
;
1315 int save_x
= new_pos_X
, save_y
= new_pos_Y
;
1317 if (end_hpos
>= row
->used
[TEXT_AREA
])
1318 nglyphs
= row
->used
[TEXT_AREA
] - start_hpos
;
1320 /* IT_write_glyphs writes at cursor position, so we need to
1321 temporarily move cursor coordinates to the beginning of
1322 the highlight region. */
1323 new_pos_X
= start_hpos
+ WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w
);
1324 new_pos_Y
= row
->y
+ WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w
);
1327 fprintf (termscript
, "<MH- %d-%d:%d>",
1328 new_pos_X
, new_pos_X
+ nglyphs
- 1, new_pos_Y
);
1329 IT_write_glyphs (row
->glyphs
[TEXT_AREA
] + start_hpos
, nglyphs
);
1331 fputs ("\n", termscript
);
1339 /* Change the mouse pointer shape. */
1340 IT_set_mouse_pointer (hl
);
1343 /* Clear out the mouse-highlighted active region.
1344 Redraw it un-highlighted first. */
1346 clear_mouse_face (struct display_info
*dpyinfo
)
1348 if (! NILP (dpyinfo
->mouse_face_window
))
1349 show_mouse_face (dpyinfo
, 0);
1351 dpyinfo
->mouse_face_beg_row
= dpyinfo
->mouse_face_beg_col
= -1;
1352 dpyinfo
->mouse_face_end_row
= dpyinfo
->mouse_face_end_col
= -1;
1353 dpyinfo
->mouse_face_window
= Qnil
;
1356 /* Find the glyph matrix position of buffer position POS in window W.
1357 *HPOS and *VPOS are set to the positions found. W's current glyphs
1358 must be up to date. If POS is above window start return (0, 0).
1359 If POS is after end of W, return end of last line in W. */
1361 fast_find_position (struct window
*w
, int pos
, int *hpos
, int *vpos
)
1365 int maybe_next_line_p
= 0;
1366 int line_start_position
;
1367 int yb
= window_text_bottom_y (w
);
1368 struct glyph_row
*row
= MATRIX_ROW (w
->current_matrix
, 0);
1369 struct glyph_row
*best_row
= row
;
1373 if (row
->used
[TEXT_AREA
])
1374 line_start_position
= row
->glyphs
[TEXT_AREA
]->charpos
;
1376 line_start_position
= 0;
1378 if (line_start_position
> pos
)
1380 /* If the position sought is the end of the buffer,
1381 don't include the blank lines at the bottom of the window. */
1382 else if (line_start_position
== pos
1383 && pos
== BUF_ZV (XBUFFER (w
->buffer
)))
1385 maybe_next_line_p
= 1;
1388 else if (line_start_position
> 0)
1391 /* Don't overstep the last matrix row, lest we get into the
1392 never-never land... */
1393 if (row
->y
+ 1 >= yb
)
1399 /* Find the right column within BEST_ROW. */
1402 for (i
= 0; i
< row
->used
[TEXT_AREA
]; i
++)
1404 struct glyph
*glyph
= row
->glyphs
[TEXT_AREA
] + i
;
1407 charpos
= glyph
->charpos
;
1414 else if (charpos
> pos
)
1416 else if (charpos
> 0)
1420 /* If we're looking for the end of the buffer,
1421 and we didn't find it in the line we scanned,
1422 use the start of the following line. */
1423 if (maybe_next_line_p
)
1430 *hpos
= lastcol
+ 1;
1434 /* Take proper action when mouse has moved to the mode or top line of
1435 window W, x-position X. MODE_LINE_P non-zero means mouse is on the
1436 mode line. X is relative to the start of the text display area of
1437 W, so the width of fringes and scroll bars must be subtracted
1438 to get a position relative to the start of the mode line. */
1440 IT_note_mode_line_highlight (struct window
*w
, int x
, int mode_line_p
)
1442 struct frame
*f
= XFRAME (w
->frame
);
1443 struct display_info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
1444 struct glyph_row
*row
;
1447 row
= MATRIX_MODE_LINE_ROW (w
->current_matrix
);
1449 row
= MATRIX_HEADER_LINE_ROW (w
->current_matrix
);
1453 extern Lisp_Object Qhelp_echo
;
1454 struct glyph
*glyph
, *end
;
1455 Lisp_Object help
, map
;
1457 /* Find the glyph under X. */
1458 glyph
= row
->glyphs
[TEXT_AREA
]
1459 + x
- FRAME_LEFT_SCROLL_BAR_WIDTH (f
) * CANON_X_UNIT (f
);
1460 end
= glyph
+ row
->used
[TEXT_AREA
];
1462 && STRINGP (glyph
->object
)
1463 && XSTRING (glyph
->object
)->intervals
1464 && glyph
->charpos
>= 0
1465 && glyph
->charpos
< XSTRING (glyph
->object
)->size
)
1467 /* If we're on a string with `help-echo' text property,
1468 arrange for the help to be displayed. This is done by
1469 setting the global variable help_echo to the help string. */
1470 help
= Fget_text_property (make_number (glyph
->charpos
),
1471 Qhelp_echo
, glyph
->object
);
1475 XSETWINDOW (help_echo_window
, w
);
1476 help_echo_object
= glyph
->object
;
1477 help_echo_pos
= glyph
->charpos
;
1483 /* Take proper action when the mouse has moved to position X, Y on
1484 frame F as regards highlighting characters that have mouse-face
1485 properties. Also de-highlighting chars where the mouse was before.
1486 X and Y can be negative or out of range. */
1488 IT_note_mouse_highlight (struct frame
*f
, int x
, int y
)
1490 struct display_info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
1495 /* When a menu is active, don't highlight because this looks odd. */
1496 if (mouse_preempted
)
1499 if (NILP (Vmouse_highlight
)
1500 || !f
->glyphs_initialized_p
)
1503 dpyinfo
->mouse_face_mouse_x
= x
;
1504 dpyinfo
->mouse_face_mouse_y
= y
;
1505 dpyinfo
->mouse_face_mouse_frame
= f
;
1507 if (dpyinfo
->mouse_face_defer
)
1512 dpyinfo
->mouse_face_deferred_gc
= 1;
1516 /* Which window is that in? */
1517 window
= window_from_coordinates (f
, x
, y
, &portion
, 0);
1519 /* If we were displaying active text in another window, clear that. */
1520 if (! EQ (window
, dpyinfo
->mouse_face_window
))
1521 clear_mouse_face (dpyinfo
);
1523 /* Not on a window -> return. */
1524 if (!WINDOWP (window
))
1527 /* Convert to window-relative coordinates. */
1528 w
= XWINDOW (window
);
1529 x
-= WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w
);
1530 y
-= WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w
);
1532 if (portion
== 1 || portion
== 3)
1534 /* Mouse is on the mode or top line. */
1535 IT_note_mode_line_highlight (w
, x
, portion
== 1);
1539 IT_set_mouse_pointer (0);
1541 /* Are we in a window whose display is up to date?
1542 And verify the buffer's text has not changed. */
1543 if (/* Within text portion of the window. */
1545 && EQ (w
->window_end_valid
, w
->buffer
)
1546 && XFASTINT (w
->last_modified
) == BUF_MODIFF (XBUFFER (w
->buffer
))
1547 && (XFASTINT (w
->last_overlay_modified
)
1548 == BUF_OVERLAY_MODIFF (XBUFFER (w
->buffer
))))
1551 struct glyph_row
*row
;
1552 struct glyph
*glyph
;
1553 int nrows
= w
->current_matrix
->nrows
;
1555 /* Find the glyph under X/Y. */
1557 if (y
>= 0 && y
< nrows
)
1559 row
= MATRIX_ROW (w
->current_matrix
, y
);
1560 /* Give up if some row before the one we are looking for is
1562 for (i
= 0; i
<= y
; i
++)
1563 if (!MATRIX_ROW (w
->current_matrix
, i
)->enabled_p
)
1565 if (i
> y
/* all rows upto and including the one at Y are enabled */
1566 && row
->displays_text_p
1567 && x
< window_box_width (w
, TEXT_AREA
))
1569 glyph
= row
->glyphs
[TEXT_AREA
];
1570 if (x
>= row
->used
[TEXT_AREA
])
1575 if (!BUFFERP (glyph
->object
))
1581 /* Clear mouse face if X/Y not over text. */
1584 clear_mouse_face (dpyinfo
);
1588 if (!BUFFERP (glyph
->object
))
1590 pos
= glyph
->charpos
;
1592 /* Check for mouse-face and help-echo. */
1594 extern Lisp_Object Qmouse_face
;
1595 Lisp_Object mouse_face
, overlay
, position
;
1596 Lisp_Object
*overlay_vec
;
1598 struct buffer
*obuf
;
1601 /* If we get an out-of-range value, return now; avoid an error. */
1602 if (pos
> BUF_Z (XBUFFER (w
->buffer
)))
1605 /* Make the window's buffer temporarily current for
1606 overlays_at and compute_char_face. */
1607 obuf
= current_buffer
;
1608 current_buffer
= XBUFFER (w
->buffer
);
1614 /* Is this char mouse-active or does it have help-echo? */
1615 XSETINT (position
, pos
);
1617 /* Put all the overlays we want in a vector in overlay_vec.
1618 Store the length in len. If there are more than 10, make
1619 enough space for all, and try again. */
1621 overlay_vec
= (Lisp_Object
*) alloca (len
* sizeof (Lisp_Object
));
1622 noverlays
= overlays_at (pos
, 0, &overlay_vec
, &len
, NULL
, NULL
, 0);
1623 if (noverlays
> len
)
1626 overlay_vec
= (Lisp_Object
*) alloca (len
* sizeof (Lisp_Object
));
1627 noverlays
= overlays_at (pos
,
1628 0, &overlay_vec
, &len
, NULL
, NULL
, 0);
1631 /* Sort overlays into increasing priority order. */
1632 noverlays
= sort_overlays (overlay_vec
, noverlays
, w
);
1634 /* Check mouse-face highlighting. */
1635 if (! (EQ (window
, dpyinfo
->mouse_face_window
)
1636 && y
>= dpyinfo
->mouse_face_beg_row
1637 && y
<= dpyinfo
->mouse_face_end_row
1638 && (y
> dpyinfo
->mouse_face_beg_row
1639 || x
>= dpyinfo
->mouse_face_beg_col
)
1640 && (y
< dpyinfo
->mouse_face_end_row
1641 || x
< dpyinfo
->mouse_face_end_col
1642 || dpyinfo
->mouse_face_past_end
)))
1644 /* Clear the display of the old active region, if any. */
1645 clear_mouse_face (dpyinfo
);
1647 /* Find highest priority overlay that has a mouse-face prop. */
1649 for (i
= noverlays
- 1; i
>= 0; --i
)
1651 mouse_face
= Foverlay_get (overlay_vec
[i
], Qmouse_face
);
1652 if (!NILP (mouse_face
))
1654 overlay
= overlay_vec
[i
];
1659 /* If no overlay applies, get a text property. */
1661 mouse_face
= Fget_text_property (position
, Qmouse_face
,
1664 /* Handle the overlay case. */
1665 if (! NILP (overlay
))
1667 /* Find the range of text around this char that
1668 should be active. */
1669 Lisp_Object before
, after
;
1672 before
= Foverlay_start (overlay
);
1673 after
= Foverlay_end (overlay
);
1674 /* Record this as the current active region. */
1675 fast_find_position (w
, XFASTINT (before
),
1676 &dpyinfo
->mouse_face_beg_col
,
1677 &dpyinfo
->mouse_face_beg_row
);
1678 dpyinfo
->mouse_face_past_end
1679 = !fast_find_position (w
, XFASTINT (after
),
1680 &dpyinfo
->mouse_face_end_col
,
1681 &dpyinfo
->mouse_face_end_row
);
1682 dpyinfo
->mouse_face_window
= window
;
1683 dpyinfo
->mouse_face_face_id
1684 = face_at_buffer_position (w
, pos
, 0, 0,
1685 &ignore
, pos
+ 1, 1);
1687 /* Display it as active. */
1688 show_mouse_face (dpyinfo
, 1);
1690 /* Handle the text property case. */
1691 else if (! NILP (mouse_face
))
1693 /* Find the range of text around this char that
1694 should be active. */
1695 Lisp_Object before
, after
, beginning
, end
;
1698 beginning
= Fmarker_position (w
->start
);
1699 XSETINT (end
, (BUF_Z (XBUFFER (w
->buffer
))
1700 - XFASTINT (w
->window_end_pos
)));
1702 = Fprevious_single_property_change (make_number (pos
+ 1),
1704 w
->buffer
, beginning
);
1706 = Fnext_single_property_change (position
, Qmouse_face
,
1708 /* Record this as the current active region. */
1709 fast_find_position (w
, XFASTINT (before
),
1710 &dpyinfo
->mouse_face_beg_col
,
1711 &dpyinfo
->mouse_face_beg_row
);
1712 dpyinfo
->mouse_face_past_end
1713 = !fast_find_position (w
, XFASTINT (after
),
1714 &dpyinfo
->mouse_face_end_col
,
1715 &dpyinfo
->mouse_face_end_row
);
1716 dpyinfo
->mouse_face_window
= window
;
1717 dpyinfo
->mouse_face_face_id
1718 = face_at_buffer_position (w
, pos
, 0, 0,
1719 &ignore
, pos
+ 1, 1);
1721 /* Display it as active. */
1722 show_mouse_face (dpyinfo
, 1);
1726 /* Look for a `help-echo' property. */
1729 extern Lisp_Object Qhelp_echo
;
1731 /* Check overlays first. */
1733 for (i
= noverlays
- 1; i
>= 0 && NILP (help
); --i
)
1735 overlay
= overlay_vec
[i
];
1736 help
= Foverlay_get (overlay
, Qhelp_echo
);
1742 help_echo_window
= window
;
1743 help_echo_object
= overlay
;
1744 help_echo_pos
= pos
;
1746 /* Try text properties. */
1747 else if (NILP (help
)
1748 && ((STRINGP (glyph
->object
)
1749 && glyph
->charpos
>= 0
1750 && glyph
->charpos
< XSTRING (glyph
->object
)->size
)
1751 || (BUFFERP (glyph
->object
)
1752 && glyph
->charpos
>= BEGV
1753 && glyph
->charpos
< ZV
)))
1755 help
= Fget_text_property (make_number (glyph
->charpos
),
1756 Qhelp_echo
, glyph
->object
);
1760 help_echo_window
= window
;
1761 help_echo_object
= glyph
->object
;
1762 help_echo_pos
= glyph
->charpos
;
1769 current_buffer
= obuf
;
1775 IT_clear_end_of_line (int first_unused
)
1779 int offset
= 2 * (new_pos_X
+ screen_size_X
* new_pos_Y
);
1780 extern int fatal_error_in_progress
;
1782 if (new_pos_X
>= first_unused
|| fatal_error_in_progress
)
1786 i
= (j
= first_unused
- new_pos_X
) * 2;
1788 fprintf (termscript
, "<CLR:EOL[%d..%d)>", new_pos_X
, first_unused
);
1789 spaces
= sp
= alloca (i
);
1794 *sp
++ = ScreenAttrib
;
1798 dosmemput (spaces
, i
, (int)ScreenPrimary
+ offset
);
1799 if (screen_virtual_segment
)
1800 dosv_refresh_virtual_screen (offset
, i
/ 2);
1802 /* clear_end_of_line_raw on term.c leaves the cursor at first_unused.
1803 Let's follow their lead, in case someone relies on this. */
1804 new_pos_X
= first_unused
;
1808 IT_clear_screen (void)
1811 fprintf (termscript
, "<CLR:SCR>");
1812 /* We are sometimes called (from clear_garbaged_frames) when a new
1813 frame is being created, but its faces are not yet realized. In
1814 such a case we cannot call IT_set_face, since it will fail to find
1815 any valid faces and will abort. Instead, use the initial screen
1816 colors; that should mimic what a Unix tty does, which simply clears
1817 the screen with whatever default colors are in use. */
1818 if (FACE_FROM_ID (SELECTED_FRAME (), DEFAULT_FACE_ID
) == NULL
)
1819 ScreenAttrib
= (initial_screen_colors
[0] << 4) | initial_screen_colors
[1];
1824 if (screen_virtual_segment
)
1825 dosv_refresh_virtual_screen (0, screen_size
);
1826 new_pos_X
= new_pos_Y
= 0;
1830 IT_clear_to_end (void)
1833 fprintf (termscript
, "<CLR:EOS>");
1835 while (new_pos_Y
< screen_size_Y
) {
1837 IT_clear_end_of_line (screen_size_X
);
1843 IT_cursor_to (int y
, int x
)
1846 fprintf (termscript
, "\n<XY=%dx%d>", x
, y
);
1851 static int cursor_cleared
;
1854 IT_display_cursor (int on
)
1856 if (on
&& cursor_cleared
)
1858 ScreenSetCursor (current_pos_Y
, current_pos_X
);
1861 else if (!on
&& !cursor_cleared
)
1863 ScreenSetCursor (-1, -1);
1868 /* Emacs calls cursor-movement functions a lot when it updates the
1869 display (probably a legacy of old terminals where you cannot
1870 update a screen line without first moving the cursor there).
1871 However, cursor movement is expensive on MSDOS (it calls a slow
1872 BIOS function and requires 2 mode switches), while actual screen
1873 updates access the video memory directly and don't depend on
1874 cursor position. To avoid slowing down the redisplay, we cheat:
1875 all functions that move the cursor only set internal variables
1876 which record the cursor position, whereas the cursor is only
1877 moved to its final position whenever screen update is complete.
1879 `IT_cmgoto' is called from the keyboard reading loop and when the
1880 frame update is complete. This means that we are ready for user
1881 input, so we update the cursor position to show where the point is,
1882 and also make the mouse pointer visible.
1884 Special treatment is required when the cursor is in the echo area,
1885 to put the cursor at the end of the text displayed there. */
1888 IT_cmgoto (FRAME_PTR f
)
1890 /* Only set the cursor to where it should be if the display is
1891 already in sync with the window contents. */
1892 int update_cursor_pos
= 1; /* MODIFF == unchanged_modified; */
1894 /* FIXME: This needs to be rewritten for the new redisplay, or
1897 static int previous_pos_X
= -1;
1899 update_cursor_pos
= 1; /* temporary!!! */
1901 /* If the display is in sync, forget any previous knowledge about
1902 cursor position. This is primarily for unexpected events like
1903 C-g in the minibuffer. */
1904 if (update_cursor_pos
&& previous_pos_X
>= 0)
1905 previous_pos_X
= -1;
1906 /* If we are in the echo area, put the cursor at the
1907 end of the echo area message. */
1908 if (!update_cursor_pos
1909 && XFASTINT (XWINDOW (FRAME_MINIBUF_WINDOW (f
))->top
) <= new_pos_Y
)
1911 int tem_X
= current_pos_X
, dummy
;
1913 if (echo_area_glyphs
)
1915 tem_X
= echo_area_glyphs_length
;
1916 /* Save current cursor position, to be restored after the
1917 echo area message is erased. Only remember one level
1918 of previous cursor position. */
1919 if (previous_pos_X
== -1)
1920 ScreenGetCursor (&dummy
, &previous_pos_X
);
1922 else if (previous_pos_X
>= 0)
1924 /* We wind up here after the echo area message is erased.
1925 Restore the cursor position we remembered above. */
1926 tem_X
= previous_pos_X
;
1927 previous_pos_X
= -1;
1930 if (current_pos_X
!= tem_X
)
1933 update_cursor_pos
= 1;
1938 if (update_cursor_pos
1939 && (current_pos_X
!= new_pos_X
|| current_pos_Y
!= new_pos_Y
))
1941 ScreenSetCursor (current_pos_Y
= new_pos_Y
, current_pos_X
= new_pos_X
);
1943 fprintf (termscript
, "\n<CURSOR:%dx%d>", current_pos_X
, current_pos_Y
);
1946 /* Maybe cursor is invisible, so make it visible. */
1947 IT_display_cursor (1);
1949 /* Mouse pointer should be always visible if we are waiting for
1956 IT_update_begin (struct frame
*f
)
1958 struct display_info
*display_info
= FRAME_X_DISPLAY_INFO (f
);
1959 struct frame
*mouse_face_frame
= display_info
->mouse_face_mouse_frame
;
1963 if (f
&& f
== mouse_face_frame
)
1965 /* Don't do highlighting for mouse motion during the update. */
1966 display_info
->mouse_face_defer
= 1;
1968 /* If F needs to be redrawn, simply forget about any prior mouse
1970 if (FRAME_GARBAGED_P (f
))
1971 display_info
->mouse_face_window
= Qnil
;
1973 /* Can we tell that this update does not affect the window
1974 where the mouse highlight is? If so, no need to turn off.
1975 Likewise, don't do anything if none of the enabled rows
1976 contains glyphs highlighted in mouse face. */
1977 if (!NILP (display_info
->mouse_face_window
)
1978 && WINDOWP (display_info
->mouse_face_window
))
1980 struct window
*w
= XWINDOW (display_info
->mouse_face_window
);
1983 /* If the mouse highlight is in the window that was deleted
1984 (e.g., if it was popped by completion), clear highlight
1986 if (NILP (w
->buffer
))
1987 display_info
->mouse_face_window
= Qnil
;
1990 for (i
= 0; i
< w
->desired_matrix
->nrows
; ++i
)
1991 if (MATRIX_ROW_ENABLED_P (w
->desired_matrix
, i
)
1992 && MATRIX_ROW (w
->current_matrix
, i
)->mouse_face_p
)
1996 if (NILP (w
->buffer
) || i
< w
->desired_matrix
->nrows
)
1997 clear_mouse_face (display_info
);
2000 else if (mouse_face_frame
&& !FRAME_LIVE_P (mouse_face_frame
))
2002 /* If the frame with mouse highlight was deleted, invalidate the
2004 display_info
->mouse_face_beg_row
= display_info
->mouse_face_beg_col
= -1;
2005 display_info
->mouse_face_end_row
= display_info
->mouse_face_end_col
= -1;
2006 display_info
->mouse_face_window
= Qnil
;
2007 display_info
->mouse_face_deferred_gc
= 0;
2008 display_info
->mouse_face_mouse_frame
= NULL
;
2015 IT_update_end (struct frame
*f
)
2017 FRAME_X_DISPLAY_INFO (f
)->mouse_face_defer
= 0;
2020 Lisp_Object Qcursor_type
;
2023 IT_frame_up_to_date (struct frame
*f
)
2025 struct display_info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
2026 Lisp_Object new_cursor
, frame_desired_cursor
;
2029 if (dpyinfo
->mouse_face_deferred_gc
2030 || (f
&& f
== dpyinfo
->mouse_face_mouse_frame
))
2033 if (dpyinfo
->mouse_face_mouse_frame
)
2034 IT_note_mouse_highlight (dpyinfo
->mouse_face_mouse_frame
,
2035 dpyinfo
->mouse_face_mouse_x
,
2036 dpyinfo
->mouse_face_mouse_y
);
2037 dpyinfo
->mouse_face_deferred_gc
= 0;
2041 /* Set the cursor type to whatever they wanted. In a minibuffer
2042 window, we want the cursor to appear only if we are reading input
2043 from this window, and we want the cursor to be taken from the
2044 frame parameters. For the selected window, we use either its
2045 buffer-local value or the value from the frame parameters if the
2046 buffer doesn't define its local value for the cursor type. */
2047 sw
= XWINDOW (f
->selected_window
);
2048 frame_desired_cursor
= Fcdr (Fassq (Qcursor_type
, f
->param_alist
));
2049 if (cursor_in_echo_area
2050 && FRAME_HAS_MINIBUF_P (f
)
2051 && EQ (FRAME_MINIBUF_WINDOW (f
), echo_area_window
)
2052 && sw
== XWINDOW (echo_area_window
))
2053 new_cursor
= frame_desired_cursor
;
2056 struct buffer
*b
= XBUFFER (sw
->buffer
);
2058 if (EQ (b
->cursor_type
, Qt
))
2059 new_cursor
= frame_desired_cursor
;
2060 else if (NILP (b
->cursor_type
)) /* nil means no cursor */
2061 new_cursor
= Fcons (Qbar
, make_number (0));
2063 new_cursor
= b
->cursor_type
;
2066 IT_set_cursor_type (f
, new_cursor
);
2068 IT_cmgoto (f
); /* position cursor when update is done */
2071 /* Copy LEN glyphs displayed on a single line whose vertical position
2072 is YPOS, beginning at horizontal position XFROM to horizontal
2073 position XTO, by moving blocks in the video memory. Used by
2074 functions that insert and delete glyphs. */
2076 IT_copy_glyphs (int xfrom
, int xto
, size_t len
, int ypos
)
2078 /* The offsets of source and destination relative to the
2079 conventional memorty selector. */
2080 int from
= 2 * (xfrom
+ screen_size_X
* ypos
) + ScreenPrimary
;
2081 int to
= 2 * (xto
+ screen_size_X
* ypos
) + ScreenPrimary
;
2083 if (from
== to
|| len
<= 0)
2086 _farsetsel (_dos_ds
);
2088 /* The source and destination might overlap, so we need to move
2089 glyphs non-destructively. */
2092 for ( ; len
; from
+= 2, to
+= 2, len
--)
2093 _farnspokew (to
, _farnspeekw (from
));
2097 from
+= (len
- 1) * 2;
2098 to
+= (len
- 1) * 2;
2099 for ( ; len
; from
-= 2, to
-= 2, len
--)
2100 _farnspokew (to
, _farnspeekw (from
));
2102 if (screen_virtual_segment
)
2103 dosv_refresh_virtual_screen (ypos
* screen_size_X
* 2, screen_size_X
);
2106 /* Insert and delete glyphs. */
2108 IT_insert_glyphs (start
, len
)
2109 register struct glyph
*start
;
2112 int shift_by_width
= screen_size_X
- (new_pos_X
+ len
);
2114 /* Shift right the glyphs from the nominal cursor position to the
2115 end of this line. */
2116 IT_copy_glyphs (new_pos_X
, new_pos_X
+ len
, shift_by_width
, new_pos_Y
);
2118 /* Now write the glyphs to be inserted. */
2119 IT_write_glyphs (start
, len
);
2123 IT_delete_glyphs (n
)
2129 /* set-window-configuration on window.c needs this. */
2131 x_set_menu_bar_lines (f
, value
, oldval
)
2133 Lisp_Object value
, oldval
;
2135 set_menu_bar_lines (f
, value
, oldval
);
2138 /* This was copied from xfaces.c */
2140 extern Lisp_Object Qbackground_color
;
2141 extern Lisp_Object Qforeground_color
;
2142 Lisp_Object Qreverse
;
2143 extern Lisp_Object Qtitle
;
2145 /* IT_set_terminal_modes is called when emacs is started,
2146 resumed, and whenever the screen is redrawn! */
2149 IT_set_terminal_modes (void)
2152 fprintf (termscript
, "\n<SET_TERM>");
2154 screen_size_X
= ScreenCols ();
2155 screen_size_Y
= ScreenRows ();
2156 screen_size
= screen_size_X
* screen_size_Y
;
2158 new_pos_X
= new_pos_Y
= 0;
2159 current_pos_X
= current_pos_Y
= -1;
2161 if (term_setup_done
)
2163 term_setup_done
= 1;
2165 startup_screen_size_X
= screen_size_X
;
2166 startup_screen_size_Y
= screen_size_Y
;
2167 startup_screen_attrib
= ScreenAttrib
;
2170 /* Is DOS/V (or any other RSIS software which relocates
2171 the screen) installed? */
2173 unsigned short es_value
;
2176 regs
.h
.ah
= 0xfe; /* get relocated screen address */
2177 if (ScreenPrimary
== 0xb0000UL
|| ScreenPrimary
== 0xb8000UL
)
2178 regs
.x
.es
= (ScreenPrimary
>> 4) & 0xffff;
2179 else if (screen_old_address
) /* already switched to Japanese mode once */
2180 regs
.x
.es
= (screen_old_address
>> 4) & 0xffff;
2182 regs
.x
.es
= ScreenMode () == 7 ? 0xb000 : 0xb800;
2184 es_value
= regs
.x
.es
;
2185 __dpmi_int (0x10, ®s
);
2187 if (regs
.x
.es
!= es_value
)
2189 /* screen_old_address is only set if ScreenPrimary does NOT
2190 already point to the relocated buffer address returned by
2191 the Int 10h/AX=FEh call above. DJGPP v2.02 and later sets
2192 ScreenPrimary to that address at startup under DOS/V. */
2193 if (regs
.x
.es
!= (ScreenPrimary
>> 4) & 0xffff)
2194 screen_old_address
= ScreenPrimary
;
2195 screen_virtual_segment
= regs
.x
.es
;
2196 screen_virtual_offset
= regs
.x
.di
;
2197 ScreenPrimary
= (screen_virtual_segment
<< 4) + screen_virtual_offset
;
2200 #endif /* __DJGPP__ > 1 */
2202 ScreenGetCursor (&startup_pos_Y
, &startup_pos_X
);
2203 ScreenRetrieve (startup_screen_buffer
= xmalloc (screen_size
* 2));
2206 fprintf (termscript
, "<SCREEN SAVED (dimensions=%dx%d)>\n",
2207 screen_size_X
, screen_size_Y
);
2212 /* IT_reset_terminal_modes is called when emacs is
2213 suspended or killed. */
2216 IT_reset_terminal_modes (void)
2218 int display_row_start
= (int) ScreenPrimary
;
2219 int saved_row_len
= startup_screen_size_X
* 2;
2220 int update_row_len
= ScreenCols () * 2;
2221 int current_rows
= ScreenRows ();
2222 int to_next_row
= update_row_len
;
2223 unsigned char *saved_row
= startup_screen_buffer
;
2224 int cursor_pos_X
= ScreenCols () - 1;
2225 int cursor_pos_Y
= ScreenRows () - 1;
2228 fprintf (termscript
, "\n<RESET_TERM>");
2230 if (!term_setup_done
)
2235 /* Leave the video system in the same state as we found it,
2236 as far as the blink/bright-background bit is concerned. */
2237 maybe_enable_blinking ();
2239 /* We have a situation here.
2240 We cannot just do ScreenUpdate(startup_screen_buffer) because
2241 the luser could have changed screen dimensions inside Emacs
2242 and failed (or didn't want) to restore them before killing
2243 Emacs. ScreenUpdate() uses the *current* screen dimensions and
2244 thus will happily use memory outside what was allocated for
2245 `startup_screen_buffer'.
2246 Thus we only restore as much as the current screen dimensions
2247 can hold, and clear the rest (if the saved screen is smaller than
2248 the current) with the color attribute saved at startup. The cursor
2249 is also restored within the visible dimensions. */
2251 ScreenAttrib
= startup_screen_attrib
;
2253 /* Don't restore the screen if we are exiting less than 2 seconds
2254 after startup: we might be crashing, and the screen might show
2255 some vital clues to what's wrong. */
2256 if (clock () - startup_time
>= 2*CLOCKS_PER_SEC
)
2259 if (screen_virtual_segment
)
2260 dosv_refresh_virtual_screen (0, screen_size
);
2262 if (update_row_len
> saved_row_len
)
2263 update_row_len
= saved_row_len
;
2264 if (current_rows
> startup_screen_size_Y
)
2265 current_rows
= startup_screen_size_Y
;
2268 fprintf (termscript
, "<SCREEN RESTORED (dimensions=%dx%d)>\n",
2269 update_row_len
/ 2, current_rows
);
2271 while (current_rows
--)
2273 dosmemput (saved_row
, update_row_len
, display_row_start
);
2274 if (screen_virtual_segment
)
2275 dosv_refresh_virtual_screen (display_row_start
- ScreenPrimary
,
2276 update_row_len
/ 2);
2277 saved_row
+= saved_row_len
;
2278 display_row_start
+= to_next_row
;
2281 if (startup_pos_X
< cursor_pos_X
)
2282 cursor_pos_X
= startup_pos_X
;
2283 if (startup_pos_Y
< cursor_pos_Y
)
2284 cursor_pos_Y
= startup_pos_Y
;
2286 ScreenSetCursor (cursor_pos_Y
, cursor_pos_X
);
2287 xfree (startup_screen_buffer
);
2289 term_setup_done
= 0;
2293 IT_set_terminal_window (int foo
)
2297 /* Remember the screen colors of the curent frame, to serve as the
2298 default colors for newly-created frames. */
2299 DEFUN ("msdos-remember-default-colors", Fmsdos_remember_default_colors
,
2300 Smsdos_remember_default_colors
, 1, 1, 0,
2301 doc
: /* Remember the screen colors of the current frame. */)
2307 CHECK_FRAME (frame
);
2310 /* This function is called after applying default-frame-alist to the
2311 initial frame. At that time, if reverse-colors option was
2312 specified in default-frame-alist, it was already applied, and
2313 frame colors are reversed. We need to account for that. */
2314 if (EQ (Fcdr (Fassq (Qreverse
, f
->param_alist
)), Qt
))
2316 initial_screen_colors
[0] = FRAME_BACKGROUND_PIXEL (f
);
2317 initial_screen_colors
[1] = FRAME_FOREGROUND_PIXEL (f
);
2321 initial_screen_colors
[0] = FRAME_FOREGROUND_PIXEL (f
);
2322 initial_screen_colors
[1] = FRAME_BACKGROUND_PIXEL (f
);
2327 IT_set_frame_parameters (f
, alist
)
2332 int length
= XINT (Flength (alist
));
2335 = (Lisp_Object
*) alloca (length
* sizeof (Lisp_Object
));
2337 = (Lisp_Object
*) alloca (length
* sizeof (Lisp_Object
));
2338 /* Do we have to reverse the foreground and background colors? */
2339 int reverse
= EQ (Fcdr (Fassq (Qreverse
, f
->param_alist
)), Qt
);
2340 int was_reverse
= reverse
;
2341 int redraw
= 0, fg_set
= 0, bg_set
= 0;
2342 int need_to_reverse
;
2343 unsigned long orig_fg
;
2344 unsigned long orig_bg
;
2345 Lisp_Object frame_bg
, frame_fg
;
2346 extern Lisp_Object Qdefault
, QCforeground
, QCbackground
;
2348 /* If we are creating a new frame, begin with the original screen colors
2349 used for the initial frame. */
2350 if (alist
== Vdefault_frame_alist
2351 && initial_screen_colors
[0] != -1 && initial_screen_colors
[1] != -1)
2353 FRAME_FOREGROUND_PIXEL (f
) = initial_screen_colors
[0];
2354 FRAME_BACKGROUND_PIXEL (f
) = initial_screen_colors
[1];
2356 orig_fg
= FRAME_FOREGROUND_PIXEL (f
);
2357 orig_bg
= FRAME_BACKGROUND_PIXEL (f
);
2358 frame_fg
= Fcdr (Fassq (Qforeground_color
, f
->param_alist
));
2359 frame_bg
= Fcdr (Fassq (Qbackground_color
, f
->param_alist
));
2360 /* frame_fg and frame_bg could be nil if, for example,
2361 f->param_alist is nil, e.g. if we are called from
2362 Fmake_terminal_frame. */
2363 if (NILP (frame_fg
))
2364 frame_fg
= build_string (unspecified_fg
);
2365 if (NILP (frame_bg
))
2366 frame_bg
= build_string (unspecified_bg
);
2368 /* Extract parm names and values into those vectors. */
2370 for (tail
= alist
; CONSP (tail
); tail
= Fcdr (tail
))
2375 parms
[i
] = Fcar (elt
);
2376 CHECK_SYMBOL (parms
[i
]);
2377 values
[i
] = Fcdr (elt
);
2383 for (i
= 0; i
< j
; i
++)
2385 Lisp_Object prop
, val
;
2390 if (EQ (prop
, Qreverse
))
2391 reverse
= EQ (val
, Qt
);
2394 need_to_reverse
= reverse
&& !was_reverse
;
2395 if (termscript
&& need_to_reverse
)
2396 fprintf (termscript
, "<INVERSE-VIDEO>\n");
2398 /* Now process the alist elements in reverse of specified order. */
2399 for (i
--; i
>= 0; i
--)
2401 Lisp_Object prop
, val
;
2407 if (EQ (prop
, Qforeground_color
))
2409 unsigned long new_color
= load_color (f
, NULL
, val
, need_to_reverse
2410 ? LFACE_BACKGROUND_INDEX
2411 : LFACE_FOREGROUND_INDEX
);
2412 if (new_color
!= FACE_TTY_DEFAULT_COLOR
2413 && new_color
!= FACE_TTY_DEFAULT_FG_COLOR
2414 && new_color
!= FACE_TTY_DEFAULT_BG_COLOR
)
2416 FRAME_FOREGROUND_PIXEL (f
) = new_color
;
2417 /* Make sure the foreground of the default face for this
2418 frame is changed as well. */
2419 XSETFRAME (frame
, f
);
2420 if (need_to_reverse
)
2422 Finternal_set_lisp_face_attribute (Qdefault
, QCbackground
,
2424 prop
= Qbackground_color
;
2429 Finternal_set_lisp_face_attribute (Qdefault
, QCforeground
,
2435 fprintf (termscript
, "<FGCOLOR %lu>\n", new_color
);
2438 else if (EQ (prop
, Qbackground_color
))
2440 unsigned long new_color
= load_color (f
, NULL
, val
, need_to_reverse
2441 ? LFACE_FOREGROUND_INDEX
2442 : LFACE_BACKGROUND_INDEX
);
2443 if (new_color
!= FACE_TTY_DEFAULT_COLOR
2444 && new_color
!= FACE_TTY_DEFAULT_FG_COLOR
2445 && new_color
!= FACE_TTY_DEFAULT_BG_COLOR
)
2447 FRAME_BACKGROUND_PIXEL (f
) = new_color
;
2448 /* Make sure the background of the default face for this
2449 frame is changed as well. */
2450 XSETFRAME (frame
, f
);
2451 if (need_to_reverse
)
2453 Finternal_set_lisp_face_attribute (Qdefault
, QCforeground
,
2455 prop
= Qforeground_color
;
2460 Finternal_set_lisp_face_attribute (Qdefault
, QCbackground
,
2466 fprintf (termscript
, "<BGCOLOR %lu>\n", new_color
);
2469 else if (EQ (prop
, Qtitle
))
2471 x_set_title (f
, val
);
2473 fprintf (termscript
, "<TITLE: %s>\n", XSTRING (val
)->data
);
2475 else if (EQ (prop
, Qcursor_type
))
2477 IT_set_cursor_type (f
, val
);
2479 fprintf (termscript
, "<CTYPE: %s>\n",
2480 EQ (val
, Qbar
) || CONSP (val
) && EQ (XCAR (val
), Qbar
)
2483 store_frame_param (f
, prop
, val
);
2486 /* If they specified "reverse", but not the colors, we need to swap
2487 the current frame colors. */
2488 if (need_to_reverse
)
2494 XSETFRAME (frame
, f
);
2495 Finternal_set_lisp_face_attribute (Qdefault
, QCforeground
,
2496 tty_color_name (f
, orig_bg
),
2502 XSETFRAME (frame
, f
);
2503 Finternal_set_lisp_face_attribute (Qdefault
, QCbackground
,
2504 tty_color_name (f
, orig_fg
),
2512 face_change_count
++; /* forces xdisp.c to recompute basic faces */
2513 if (f
== SELECTED_FRAME())
2518 extern void init_frame_faces (FRAME_PTR
);
2520 #endif /* !HAVE_X_WINDOWS */
2523 /* Do we need the internal terminal? */
2526 internal_terminal_init ()
2528 char *term
= getenv ("TERM");
2530 struct frame
*sf
= SELECTED_FRAME();
2532 #ifdef HAVE_X_WINDOWS
2533 if (!inhibit_window_system
)
2538 = (!noninteractive
) && term
&& !strcmp (term
, "internal");
2540 if (getenv ("EMACSTEST"))
2541 termscript
= fopen (getenv ("EMACSTEST"), "wt");
2543 #ifndef HAVE_X_WINDOWS
2544 if (!internal_terminal
|| inhibit_window_system
)
2546 sf
->output_method
= output_termcap
;
2550 Vwindow_system
= intern ("pc");
2551 Vwindow_system_version
= make_number (1);
2552 sf
->output_method
= output_msdos_raw
;
2554 /* If Emacs was dumped on DOS/V machine, forget the stale VRAM address. */
2555 screen_old_address
= 0;
2557 /* Forget the stale screen colors as well. */
2558 initial_screen_colors
[0] = initial_screen_colors
[1] = -1;
2560 bzero (&the_only_x_display
, sizeof the_only_x_display
);
2561 the_only_x_display
.background_pixel
= 7; /* White */
2562 the_only_x_display
.foreground_pixel
= 0; /* Black */
2564 colors
= getenv ("EMACSCOLORS");
2565 if (colors
&& strlen (colors
) >= 2)
2567 /* The colors use 4 bits each (we enable bright background). */
2568 if (isdigit (colors
[0]))
2570 else if (isxdigit (colors
[0]))
2571 colors
[0] -= (isupper (colors
[0]) ? 'A' : 'a') - 10;
2572 if (colors
[0] >= 0 && colors
[0] < 16)
2573 the_only_x_display
.foreground_pixel
= colors
[0];
2574 if (isdigit (colors
[1]))
2576 else if (isxdigit (colors
[1]))
2577 colors
[1] -= (isupper (colors
[1]) ? 'A' : 'a') - 10;
2578 if (colors
[1] >= 0 && colors
[1] < 16)
2579 the_only_x_display
.background_pixel
= colors
[1];
2581 the_only_x_display
.line_height
= 1;
2582 the_only_x_display
.font
= (XFontStruct
*)1; /* must *not* be zero */
2583 the_only_x_display
.display_info
.mouse_face_mouse_frame
= NULL
;
2584 the_only_x_display
.display_info
.mouse_face_deferred_gc
= 0;
2585 the_only_x_display
.display_info
.mouse_face_beg_row
=
2586 the_only_x_display
.display_info
.mouse_face_beg_col
= -1;
2587 the_only_x_display
.display_info
.mouse_face_end_row
=
2588 the_only_x_display
.display_info
.mouse_face_end_col
= -1;
2589 the_only_x_display
.display_info
.mouse_face_face_id
= DEFAULT_FACE_ID
;
2590 the_only_x_display
.display_info
.mouse_face_window
= Qnil
;
2591 the_only_x_display
.display_info
.mouse_face_mouse_x
=
2592 the_only_x_display
.display_info
.mouse_face_mouse_y
= 0;
2593 the_only_x_display
.display_info
.mouse_face_defer
= 0;
2594 the_only_x_display
.display_info
.mouse_face_hidden
= 0;
2596 init_frame_faces (sf
);
2598 ring_bell_hook
= IT_ring_bell
;
2599 insert_glyphs_hook
= IT_insert_glyphs
;
2600 delete_glyphs_hook
= IT_delete_glyphs
;
2601 write_glyphs_hook
= IT_write_glyphs
;
2602 cursor_to_hook
= raw_cursor_to_hook
= IT_cursor_to
;
2603 clear_to_end_hook
= IT_clear_to_end
;
2604 clear_end_of_line_hook
= IT_clear_end_of_line
;
2605 clear_frame_hook
= IT_clear_screen
;
2606 update_begin_hook
= IT_update_begin
;
2607 update_end_hook
= IT_update_end
;
2608 frame_up_to_date_hook
= IT_frame_up_to_date
;
2610 /* These hooks are called by term.c without being checked. */
2611 set_terminal_modes_hook
= IT_set_terminal_modes
;
2612 reset_terminal_modes_hook
= IT_reset_terminal_modes
;
2613 set_terminal_window_hook
= IT_set_terminal_window
;
2614 char_ins_del_ok
= 0;
2618 dos_get_saved_screen (screen
, rows
, cols
)
2623 #ifndef HAVE_X_WINDOWS
2624 *screen
= startup_screen_buffer
;
2625 *cols
= startup_screen_size_X
;
2626 *rows
= startup_screen_size_Y
;
2627 return *screen
!= (char *)0;
2633 #ifndef HAVE_X_WINDOWS
2635 /* We are not X, but we can emulate it well enough for our needs... */
2639 if (! FRAME_MSDOS_P (SELECTED_FRAME()))
2640 error ("Not running under a window system");
2646 /* ----------------------- Keyboard control ----------------------
2648 * Keymaps reflect the following keyboard layout:
2650 * 0 1 2 3 4 5 6 7 8 9 10 11 12 BS
2651 * TAB 15 16 17 18 19 20 21 22 23 24 25 26 (41)
2652 * CLOK 30 31 32 33 34 35 36 37 38 39 40 (41) RET
2653 * SH () 45 46 47 48 49 50 51 52 53 54 SHIFT
2657 #define Ignore 0x0000
2658 #define Normal 0x0000 /* normal key - alt changes scan-code */
2659 #define FctKey 0x1000 /* func key if c == 0, else c */
2660 #define Special 0x2000 /* func key even if c != 0 */
2661 #define ModFct 0x3000 /* special if mod-keys, else 'c' */
2662 #define Map 0x4000 /* alt scan-code, map to unshift/shift key */
2663 #define KeyPad 0x5000 /* map to insert/kp-0 depending on c == 0xe0 */
2664 #define Grey 0x6000 /* Grey keypad key */
2666 #define Alt 0x0100 /* alt scan-code */
2667 #define Ctrl 0x0200 /* ctrl scan-code */
2668 #define Shift 0x0400 /* shift scan-code */
2670 static int extended_kbd
; /* 101 (102) keyboard present. */
2672 struct kbd_translate
{
2675 unsigned short code
;
2678 struct dos_keyboard_map
2683 struct kbd_translate
*translate_table
;
2687 static struct dos_keyboard_map us_keyboard
= {
2689 /* 01234567890123456789012345678901234567890 12345678901234 */
2690 "`1234567890-= qwertyuiop[] asdfghjkl;'\\ zxcvbnm,./ ",
2691 /* 0123456789012345678901234567890123456789 012345678901234 */
2692 "~!@#$%^&*()_+ QWERTYUIOP{} ASDFGHJKL:\"| ZXCVBNM<>? ",
2693 0, /* no Alt-Gr key */
2694 0 /* no translate table */
2697 static struct dos_keyboard_map fr_keyboard
= {
2699 /* 012 3456789012345678901234567890123456789012345678901234 */
2700 "ý&‚\",(-Š_€…)= azertyuiop^$ qsdfghjklm—* wxcvbnm;:! ",
2701 /* 0123456789012345678901234567890123456789012345678901234 */
2702 " 1234567890ø+ AZERTYUIOPùœ QSDFGHJKLM%æ WXCVBN?./õ ",
2703 /* 01234567 89012345678901234567890123456789012345678901234 */
2705 0 /* no translate table */
2709 * Italian keyboard support, country code 39.
2712 * added also {,},` as, respectively, AltGr-8, AltGr-9, AltGr-'
2713 * Donated by Stefano Brozzi <brozzis@mag00.cedi.unipr.it>
2716 static struct kbd_translate it_kbd_translate_table
[] = {
2717 { 0x56, 0x3c, Normal
| 13 },
2718 { 0x56, 0x3e, Normal
| 27 },
2721 static struct dos_keyboard_map it_keyboard
= {
2723 /* 0 123456789012345678901234567890123456789012345678901234 */
2724 "\\1234567890'�< qwertyuiopŠ+> asdfghjkl•…— zxcvbnm,.- ",
2725 /* 01 23456789012345678901234567890123456789012345678901234 */
2726 "|!\"œ$%&/()=?^> QWERTYUIOP‚* ASDFGHJKL‡øõ ZXCVBNM;:_ ",
2727 /* 0123456789012345678901234567890123456789012345678901234 */
2729 it_kbd_translate_table
2732 static struct dos_keyboard_map dk_keyboard
= {
2734 /* 0123456789012345678901234567890123456789012345678901234 */
2735 "«1234567890+| qwertyuiop†~ asdfghjkl‘›' zxcvbnm,.- ",
2736 /* 01 23456789012345678901234567890123456789012345678901234 */
2737 "õ!\"#$%&/()=?` QWERTYUIOP�^ ASDFGHJKL’�* ZXCVBNM;:_ ",
2738 /* 0123456789012345678901234567890123456789012345678901234 */
2740 0 /* no translate table */
2743 static struct kbd_translate jp_kbd_translate_table
[] = {
2744 { 0x73, 0x5c, Normal
| 0 },
2745 { 0x73, 0x5f, Normal
| 0 },
2746 { 0x73, 0x1c, Map
| 0 },
2747 { 0x7d, 0x5c, Normal
| 13 },
2748 { 0x7d, 0x7c, Normal
| 13 },
2749 { 0x7d, 0x1c, Map
| 13 },
2752 static struct dos_keyboard_map jp_keyboard
= {
2754 /* 0123456789012 345678901234567890123456789012345678901234 */
2755 "\\1234567890-^\\ qwertyuiop@[ asdfghjkl;:] zxcvbnm,./ ",
2756 /* 01 23456789012345678901234567890123456789012345678901234 */
2757 "_!\"#$%&'()~=~| QWERTYUIOP`{ ASDFGHJKL+*} ZXCVBNM<>? ",
2758 0, /* no Alt-Gr key */
2759 jp_kbd_translate_table
2762 static struct keyboard_layout_list
2765 struct dos_keyboard_map
*keyboard_map
;
2766 } keyboard_layout_list
[] =
2775 static struct dos_keyboard_map
*keyboard
;
2776 static int keyboard_map_all
;
2777 static int international_keyboard
;
2780 dos_set_keyboard (code
, always
)
2785 _go32_dpmi_registers regs
;
2787 /* See if Keyb.Com is installed (for international keyboard support).
2788 Note: calling Int 2Fh via int86 wedges the DOS box on some versions
2789 of Windows 9X! So don't do that! */
2791 regs
.x
.ss
= regs
.x
.sp
= regs
.x
.flags
= 0;
2792 _go32_dpmi_simulate_int (0x2f, ®s
);
2793 if (regs
.h
.al
== 0xff)
2794 international_keyboard
= 1;
2796 /* Initialize to US settings, for countries that don't have their own. */
2797 keyboard
= keyboard_layout_list
[0].keyboard_map
;
2798 keyboard_map_all
= always
;
2799 dos_keyboard_layout
= 1;
2801 for (i
= 0; i
< (sizeof (keyboard_layout_list
)/sizeof (struct keyboard_layout_list
)); i
++)
2802 if (code
== keyboard_layout_list
[i
].country_code
)
2804 keyboard
= keyboard_layout_list
[i
].keyboard_map
;
2805 keyboard_map_all
= always
;
2806 dos_keyboard_layout
= code
;
2814 unsigned char char_code
; /* normal code */
2815 unsigned char meta_code
; /* M- code */
2816 unsigned char keypad_code
; /* keypad code */
2817 unsigned char editkey_code
; /* edit key */
2818 } keypad_translate_map
[] = {
2819 '0', '0', 0xb0, /* kp-0 */ 0x63, /* insert */
2820 '1', '1', 0xb1, /* kp-1 */ 0x57, /* end */
2821 '2', '2', 0xb2, /* kp-2 */ 0x54, /* down */
2822 '3', '3', 0xb3, /* kp-3 */ 0x56, /* next */
2823 '4', '4', 0xb4, /* kp-4 */ 0x51, /* left */
2824 '5', '5', 0xb5, /* kp-5 */ 0xb5, /* kp-5 */
2825 '6', '6', 0xb6, /* kp-6 */ 0x53, /* right */
2826 '7', '7', 0xb7, /* kp-7 */ 0x50, /* home */
2827 '8', '8', 0xb8, /* kp-8 */ 0x52, /* up */
2828 '9', '9', 0xb9, /* kp-9 */ 0x55, /* prior */
2829 '.', '-', 0xae, /* kp-decimal */ 0xff /* delete */
2834 unsigned char char_code
; /* normal code */
2835 unsigned char keypad_code
; /* keypad code */
2836 } grey_key_translate_map
[] = {
2837 '/', 0xaf, /* kp-decimal */
2838 '*', 0xaa, /* kp-multiply */
2839 '-', 0xad, /* kp-subtract */
2840 '+', 0xab, /* kp-add */
2841 '\r', 0x8d /* kp-enter */
2844 static unsigned short
2845 ibmpc_translate_map
[] =
2847 /* --------------- 00 to 0f --------------- */
2848 Normal
| 0xff, /* Ctrl Break + Alt-NNN */
2849 Alt
| ModFct
| 0x1b, /* Escape */
2850 Normal
| 1, /* '1' */
2851 Normal
| 2, /* '2' */
2852 Normal
| 3, /* '3' */
2853 Normal
| 4, /* '4' */
2854 Normal
| 5, /* '5' */
2855 Normal
| 6, /* '6' */
2856 Normal
| 7, /* '7' */
2857 Normal
| 8, /* '8' */
2858 Normal
| 9, /* '9' */
2859 Normal
| 10, /* '0' */
2860 Normal
| 11, /* '-' */
2861 Normal
| 12, /* '=' */
2862 Special
| 0x08, /* Backspace */
2863 ModFct
| 0x74, /* Tab/Backtab */
2865 /* --------------- 10 to 1f --------------- */
2878 ModFct
| 0x0d, /* Return */
2883 /* --------------- 20 to 2f --------------- */
2892 Map
| 40, /* '\'' */
2894 Ignore
, /* Left shift */
2895 Map
| 41, /* '\\' */
2901 /* --------------- 30 to 3f --------------- */
2908 Ignore
, /* Right shift */
2909 Grey
| 1, /* Grey * */
2911 Normal
| 55, /* ' ' */
2912 Ignore
, /* Caps Lock */
2913 FctKey
| 0xbe, /* F1 */
2914 FctKey
| 0xbf, /* F2 */
2915 FctKey
| 0xc0, /* F3 */
2916 FctKey
| 0xc1, /* F4 */
2917 FctKey
| 0xc2, /* F5 */
2919 /* --------------- 40 to 4f --------------- */
2920 FctKey
| 0xc3, /* F6 */
2921 FctKey
| 0xc4, /* F7 */
2922 FctKey
| 0xc5, /* F8 */
2923 FctKey
| 0xc6, /* F9 */
2924 FctKey
| 0xc7, /* F10 */
2925 Ignore
, /* Num Lock */
2926 Ignore
, /* Scroll Lock */
2927 KeyPad
| 7, /* Home */
2928 KeyPad
| 8, /* Up */
2929 KeyPad
| 9, /* Page Up */
2930 Grey
| 2, /* Grey - */
2931 KeyPad
| 4, /* Left */
2932 KeyPad
| 5, /* Keypad 5 */
2933 KeyPad
| 6, /* Right */
2934 Grey
| 3, /* Grey + */
2935 KeyPad
| 1, /* End */
2937 /* --------------- 50 to 5f --------------- */
2938 KeyPad
| 2, /* Down */
2939 KeyPad
| 3, /* Page Down */
2940 KeyPad
| 0, /* Insert */
2941 KeyPad
| 10, /* Delete */
2942 Shift
| FctKey
| 0xbe, /* (Shift) F1 */
2943 Shift
| FctKey
| 0xbf, /* (Shift) F2 */
2944 Shift
| FctKey
| 0xc0, /* (Shift) F3 */
2945 Shift
| FctKey
| 0xc1, /* (Shift) F4 */
2946 Shift
| FctKey
| 0xc2, /* (Shift) F5 */
2947 Shift
| FctKey
| 0xc3, /* (Shift) F6 */
2948 Shift
| FctKey
| 0xc4, /* (Shift) F7 */
2949 Shift
| FctKey
| 0xc5, /* (Shift) F8 */
2950 Shift
| FctKey
| 0xc6, /* (Shift) F9 */
2951 Shift
| FctKey
| 0xc7, /* (Shift) F10 */
2952 Ctrl
| FctKey
| 0xbe, /* (Ctrl) F1 */
2953 Ctrl
| FctKey
| 0xbf, /* (Ctrl) F2 */
2955 /* --------------- 60 to 6f --------------- */
2956 Ctrl
| FctKey
| 0xc0, /* (Ctrl) F3 */
2957 Ctrl
| FctKey
| 0xc1, /* (Ctrl) F4 */
2958 Ctrl
| FctKey
| 0xc2, /* (Ctrl) F5 */
2959 Ctrl
| FctKey
| 0xc3, /* (Ctrl) F6 */
2960 Ctrl
| FctKey
| 0xc4, /* (Ctrl) F7 */
2961 Ctrl
| FctKey
| 0xc5, /* (Ctrl) F8 */
2962 Ctrl
| FctKey
| 0xc6, /* (Ctrl) F9 */
2963 Ctrl
| FctKey
| 0xc7, /* (Ctrl) F10 */
2964 Alt
| FctKey
| 0xbe, /* (Alt) F1 */
2965 Alt
| FctKey
| 0xbf, /* (Alt) F2 */
2966 Alt
| FctKey
| 0xc0, /* (Alt) F3 */
2967 Alt
| FctKey
| 0xc1, /* (Alt) F4 */
2968 Alt
| FctKey
| 0xc2, /* (Alt) F5 */
2969 Alt
| FctKey
| 0xc3, /* (Alt) F6 */
2970 Alt
| FctKey
| 0xc4, /* (Alt) F7 */
2971 Alt
| FctKey
| 0xc5, /* (Alt) F8 */
2973 /* --------------- 70 to 7f --------------- */
2974 Alt
| FctKey
| 0xc6, /* (Alt) F9 */
2975 Alt
| FctKey
| 0xc7, /* (Alt) F10 */
2976 Ctrl
| FctKey
| 0x6d, /* (Ctrl) Sys Rq */
2977 Ctrl
| KeyPad
| 4, /* (Ctrl) Left */
2978 Ctrl
| KeyPad
| 6, /* (Ctrl) Right */
2979 Ctrl
| KeyPad
| 1, /* (Ctrl) End */
2980 Ctrl
| KeyPad
| 3, /* (Ctrl) Page Down */
2981 Ctrl
| KeyPad
| 7, /* (Ctrl) Home */
2982 Alt
| Map
| 1, /* '1' */
2983 Alt
| Map
| 2, /* '2' */
2984 Alt
| Map
| 3, /* '3' */
2985 Alt
| Map
| 4, /* '4' */
2986 Alt
| Map
| 5, /* '5' */
2987 Alt
| Map
| 6, /* '6' */
2988 Alt
| Map
| 7, /* '7' */
2989 Alt
| Map
| 8, /* '8' */
2991 /* --------------- 80 to 8f --------------- */
2992 Alt
| Map
| 9, /* '9' */
2993 Alt
| Map
| 10, /* '0' */
2994 Alt
| Map
| 11, /* '-' */
2995 Alt
| Map
| 12, /* '=' */
2996 Ctrl
| KeyPad
| 9, /* (Ctrl) Page Up */
2997 FctKey
| 0xc8, /* F11 */
2998 FctKey
| 0xc9, /* F12 */
2999 Shift
| FctKey
| 0xc8, /* (Shift) F11 */
3000 Shift
| FctKey
| 0xc9, /* (Shift) F12 */
3001 Ctrl
| FctKey
| 0xc8, /* (Ctrl) F11 */
3002 Ctrl
| FctKey
| 0xc9, /* (Ctrl) F12 */
3003 Alt
| FctKey
| 0xc8, /* (Alt) F11 */
3004 Alt
| FctKey
| 0xc9, /* (Alt) F12 */
3005 Ctrl
| KeyPad
| 8, /* (Ctrl) Up */
3006 Ctrl
| Grey
| 2, /* (Ctrl) Grey - */
3007 Ctrl
| KeyPad
| 5, /* (Ctrl) Keypad 5 */
3009 /* --------------- 90 to 9f --------------- */
3010 Ctrl
| Grey
| 3, /* (Ctrl) Grey + */
3011 Ctrl
| KeyPad
| 2, /* (Ctrl) Down */
3012 Ctrl
| KeyPad
| 0, /* (Ctrl) Insert */
3013 Ctrl
| KeyPad
| 10, /* (Ctrl) Delete */
3014 Ctrl
| FctKey
| 0x09, /* (Ctrl) Tab */
3015 Ctrl
| Grey
| 0, /* (Ctrl) Grey / */
3016 Ctrl
| Grey
| 1, /* (Ctrl) Grey * */
3017 Alt
| FctKey
| 0x50, /* (Alt) Home */
3018 Alt
| FctKey
| 0x52, /* (Alt) Up */
3019 Alt
| FctKey
| 0x55, /* (Alt) Page Up */
3020 Ignore
, /* NO KEY */
3021 Alt
| FctKey
| 0x51, /* (Alt) Left */
3022 Ignore
, /* NO KEY */
3023 Alt
| FctKey
| 0x53, /* (Alt) Right */
3024 Ignore
, /* NO KEY */
3025 Alt
| FctKey
| 0x57, /* (Alt) End */
3027 /* --------------- a0 to af --------------- */
3028 Alt
| KeyPad
| 2, /* (Alt) Down */
3029 Alt
| KeyPad
| 3, /* (Alt) Page Down */
3030 Alt
| KeyPad
| 0, /* (Alt) Insert */
3031 Alt
| KeyPad
| 10, /* (Alt) Delete */
3032 Alt
| Grey
| 0, /* (Alt) Grey / */
3033 Alt
| FctKey
| 0x09, /* (Alt) Tab */
3034 Alt
| Grey
| 4 /* (Alt) Keypad Enter */
3037 /* These bit-positions corresponds to values returned by BIOS */
3038 #define SHIFT_P 0x0003 /* two bits! */
3039 #define CTRL_P 0x0004
3040 #define ALT_P 0x0008
3041 #define SCRLOCK_P 0x0010
3042 #define NUMLOCK_P 0x0020
3043 #define CAPSLOCK_P 0x0040
3044 #define ALT_GR_P 0x0800
3045 #define SUPER_P 0x4000 /* pseudo */
3046 #define HYPER_P 0x8000 /* pseudo */
3049 dos_get_modifiers (keymask
)
3056 /* Calculate modifier bits */
3057 regs
.h
.ah
= extended_kbd
? 0x12 : 0x02;
3058 int86 (0x16, ®s
, ®s
);
3062 mask
= regs
.h
.al
& (SHIFT_P
| CTRL_P
| ALT_P
|
3063 SCRLOCK_P
| NUMLOCK_P
| CAPSLOCK_P
);
3067 mask
= regs
.h
.al
& (SHIFT_P
|
3068 SCRLOCK_P
| NUMLOCK_P
| CAPSLOCK_P
);
3070 /* Do not break international keyboard support. */
3071 /* When Keyb.Com is loaded, the right Alt key is */
3072 /* used for accessing characters like { and } */
3073 if (regs
.h
.ah
& 2) /* Left ALT pressed ? */
3076 if ((regs
.h
.ah
& 8) != 0) /* Right ALT pressed ? */
3079 if (dos_hyper_key
== 1)
3082 modifiers
|= hyper_modifier
;
3084 else if (dos_super_key
== 1)
3087 modifiers
|= super_modifier
;
3089 else if (!international_keyboard
)
3091 /* If Keyb.Com is NOT installed, let Right Alt behave
3092 like the Left Alt. */
3098 if (regs
.h
.ah
& 1) /* Left CTRL pressed ? */
3101 if (regs
.h
.ah
& 4) /* Right CTRL pressed ? */
3103 if (dos_hyper_key
== 2)
3106 modifiers
|= hyper_modifier
;
3108 else if (dos_super_key
== 2)
3111 modifiers
|= super_modifier
;
3119 modifiers
|= shift_modifier
;
3121 modifiers
|= ctrl_modifier
;
3123 modifiers
|= meta_modifier
;
3130 #define NUM_RECENT_DOSKEYS (100)
3131 int recent_doskeys_index
; /* Index for storing next element into recent_doskeys */
3132 int total_doskeys
; /* Total number of elements stored into recent_doskeys */
3133 Lisp_Object recent_doskeys
; /* A vector, holding the last 100 keystrokes */
3135 DEFUN ("recent-doskeys", Frecent_doskeys
, Srecent_doskeys
, 0, 0, 0,
3136 doc
: /* Return vector of last 100 keyboard input values seen in dos_rawgetc.
3137 Each input key receives two values in this vector: first the ASCII code,
3138 and then the scan code. */)
3141 Lisp_Object
*keys
= XVECTOR (recent_doskeys
)->contents
;
3144 if (total_doskeys
< NUM_RECENT_DOSKEYS
)
3145 return Fvector (total_doskeys
, keys
);
3148 val
= Fvector (NUM_RECENT_DOSKEYS
, keys
);
3149 bcopy (keys
+ recent_doskeys_index
,
3150 XVECTOR (val
)->contents
,
3151 (NUM_RECENT_DOSKEYS
- recent_doskeys_index
) * sizeof (Lisp_Object
));
3153 XVECTOR (val
)->contents
+ NUM_RECENT_DOSKEYS
- recent_doskeys_index
,
3154 recent_doskeys_index
* sizeof (Lisp_Object
));
3159 /* Get a char from keyboard. Function keys are put into the event queue. */
3163 struct input_event event
;
3165 struct display_info
*dpyinfo
= FRAME_X_DISPLAY_INFO (SELECTED_FRAME());
3167 #ifndef HAVE_X_WINDOWS
3168 /* Maybe put the cursor where it should be. */
3169 IT_cmgoto (SELECTED_FRAME());
3172 /* The following condition is equivalent to `kbhit ()', except that
3173 it uses the bios to do its job. This pleases DESQview/X. */
3174 while ((regs
.h
.ah
= extended_kbd
? 0x11 : 0x01),
3175 int86 (0x16, ®s
, ®s
),
3176 (regs
.x
.flags
& 0x40) == 0)
3179 register unsigned char c
;
3180 int sc
, code
= -1, mask
, kp_mode
;
3183 regs
.h
.ah
= extended_kbd
? 0x10 : 0x00;
3184 int86 (0x16, ®s
, ®s
);
3189 XVECTOR (recent_doskeys
)->contents
[recent_doskeys_index
++]
3191 if (recent_doskeys_index
== NUM_RECENT_DOSKEYS
)
3192 recent_doskeys_index
= 0;
3193 XVECTOR (recent_doskeys
)->contents
[recent_doskeys_index
++]
3195 if (recent_doskeys_index
== NUM_RECENT_DOSKEYS
)
3196 recent_doskeys_index
= 0;
3198 modifiers
= dos_get_modifiers (&mask
);
3200 #ifndef HAVE_X_WINDOWS
3201 if (!NILP (Vdos_display_scancodes
))
3204 sprintf (buf
, "%02x:%02x*%04x",
3205 (unsigned) (sc
&0xff), (unsigned) c
, mask
);
3206 dos_direct_output (screen_size_Y
- 2, screen_size_X
- 12, buf
, 10);
3214 case 10: /* Ctrl Grey Enter */
3215 code
= Ctrl
| Grey
| 4;
3217 case 13: /* Grey Enter */
3220 case '/': /* Grey / */
3230 /* Try the keyboard-private translation table first. */
3231 if (keyboard
->translate_table
)
3233 struct kbd_translate
*p
= keyboard
->translate_table
;
3237 if (p
->sc
== sc
&& p
->ch
== c
)
3245 /* If the private table didn't translate it, use the general
3249 if (sc
>= (sizeof (ibmpc_translate_map
) / sizeof (short)))
3251 if ((code
= ibmpc_translate_map
[sc
]) == Ignore
)
3258 /* We only look at the keyboard Ctrl/Shift/Alt keys when
3259 Emacs is ready to read a key. Therefore, if they press
3260 `Alt-x' when Emacs is busy, by the time we get to
3261 `dos_get_modifiers', they might have already released the
3262 Alt key, and Emacs gets just `x', which is BAD.
3263 However, for keys with the `Map' property set, the ASCII
3264 code returns zero iff Alt is pressed. So, when we DON'T
3265 have to support international_keyboard, we don't have to
3266 distinguish between the left and right Alt keys, and we
3267 can set the META modifier for any keys with the `Map'
3268 property if they return zero ASCII code (c = 0). */
3270 || ( (code
& 0xf000) == Map
&& !international_keyboard
))
3271 modifiers
|= meta_modifier
;
3273 modifiers
|= ctrl_modifier
;
3275 modifiers
|= shift_modifier
;
3278 switch (code
& 0xf000)
3281 if (c
&& !(mask
& (SHIFT_P
| ALT_P
| CTRL_P
| HYPER_P
| SUPER_P
)))
3283 c
= 0; /* Special */
3296 if (c
== 0) /* ctrl-break */
3298 return c
; /* ALT-nnn */
3300 if (!keyboard_map_all
)
3309 if (c
&& !(mask
& ALT_P
) && !((mask
& SHIFT_P
) && (mask
& CTRL_P
)))
3310 if (!keyboard_map_all
)
3314 if (mask
& ALT_P
&& code
<= 10 && code
> 0 && dos_keypad_mode
& 0x200)
3315 mask
|= SHIFT_P
; /* ALT-1 => M-! etc. */
3319 code
= keyboard
->shifted
[code
];
3321 modifiers
&= ~shift_modifier
;
3324 if ((mask
& ALT_GR_P
) && keyboard
->alt_gr
&& keyboard
->alt_gr
[code
] != ' ')
3325 code
= keyboard
->alt_gr
[code
];
3327 code
= keyboard
->unshifted
[code
];
3332 if (c
== 0xe0) /* edit key */
3335 if ((mask
& (NUMLOCK_P
|CTRL_P
|SHIFT_P
|ALT_P
)) == NUMLOCK_P
) /* numlock on */
3336 kp_mode
= dos_keypad_mode
& 0x03;
3338 kp_mode
= (dos_keypad_mode
>> 4) & 0x03;
3343 if (code
== 10 && dos_decimal_point
)
3344 return dos_decimal_point
;
3345 return keypad_translate_map
[code
].char_code
;
3348 code
= 0xff00 | keypad_translate_map
[code
].keypad_code
;
3352 code
= keypad_translate_map
[code
].meta_code
;
3353 modifiers
= meta_modifier
;
3357 code
= 0xff00 | keypad_translate_map
[code
].editkey_code
;
3364 kp_mode
= ((mask
& (NUMLOCK_P
|CTRL_P
|SHIFT_P
|ALT_P
)) == NUMLOCK_P
) ? 0x04 : 0x40;
3365 if (dos_keypad_mode
& kp_mode
)
3366 code
= 0xff00 | grey_key_translate_map
[code
].keypad_code
;
3368 code
= grey_key_translate_map
[code
].char_code
;
3376 if (!dpyinfo
->mouse_face_hidden
&& INTEGERP (Vmouse_highlight
))
3378 dpyinfo
->mouse_face_hidden
= 1;
3379 clear_mouse_face (dpyinfo
);
3383 event
.kind
= non_ascii_keystroke
;
3385 event
.kind
= ascii_keystroke
;
3387 event
.modifiers
= modifiers
;
3388 event
.frame_or_window
= selected_frame
;
3390 event
.timestamp
= event_timestamp ();
3391 kbd_buffer_store_event (&event
);
3394 if (have_mouse
> 0 && !mouse_preempted
)
3396 int but
, press
, x
, y
, ok
;
3397 int mouse_prev_x
= mouse_last_x
, mouse_prev_y
= mouse_last_y
;
3399 /* Check for mouse movement *before* buttons. */
3400 mouse_check_moved ();
3402 /* If the mouse moved from the spot of its last sighting, we
3403 might need to update mouse highlight. */
3404 if (mouse_last_x
!= mouse_prev_x
|| mouse_last_y
!= mouse_prev_y
)
3406 if (dpyinfo
->mouse_face_hidden
)
3408 dpyinfo
->mouse_face_hidden
= 0;
3409 clear_mouse_face (dpyinfo
);
3413 /* Lisp must not be called asynchronously, so this must not
3415 if (x_autoselect_window_p
)
3418 Lisp_Object mouse_window
;
3420 mouse_window
= window_from_coordinates (SELECTED_FRAME(),
3424 /* A window will be selected only when it is not
3425 selected now. A minibuffer window will be selected
3426 iff it is active. */
3427 if (!EQ (mouse_window
, last_mouse_window
)
3428 && !EQ (mouse_window
, selected_window
)
3429 && (!MINI_WINDOW_P (XWINDOW (mouse_window
))
3430 || (EQ (mouse_window
, minibuf_window
)
3431 && minibuf_level
> 0)))
3433 Fselect_window (mouse_window
);
3435 last_mouse_window
= mouse_window
;
3438 last_mouse_window
= Qnil
;
3441 previous_help_echo
= help_echo
;
3442 help_echo
= help_echo_object
= help_echo_window
= Qnil
;
3444 IT_note_mouse_highlight (SELECTED_FRAME(),
3445 mouse_last_x
, mouse_last_y
);
3446 /* If the contents of the global variable help_echo has
3447 changed, generate a HELP_EVENT. */
3448 if (!NILP (help_echo
) || !NILP (previous_help_echo
))
3450 /* HELP_EVENT takes 2 events in the event loop. */
3451 event
.kind
= HELP_EVENT
;
3452 event
.frame_or_window
= selected_frame
;
3453 event
.arg
= help_echo_object
;
3454 event
.x
= make_number (help_echo_pos
);
3455 event
.timestamp
= event_timestamp ();
3457 kbd_buffer_store_event (&event
);
3458 if (WINDOWP (help_echo_window
))
3459 event
.frame_or_window
= help_echo_window
;
3460 event
.arg
= help_echo
;
3462 kbd_buffer_store_event (&event
);
3466 for (but
= 0; but
< NUM_MOUSE_BUTTONS
; but
++)
3467 for (press
= 0; press
< 2; press
++)
3469 int button_num
= but
;
3472 ok
= mouse_pressed (but
, &x
, &y
);
3474 ok
= mouse_released (but
, &x
, &y
);
3477 /* Allow a simultaneous press/release of Mouse-1 and
3478 Mouse-2 to simulate Mouse-3 on two-button mice. */
3479 if (mouse_button_count
== 2 && but
< 2)
3481 int x2
, y2
; /* don't clobber original coordinates */
3483 /* If only one button is pressed, wait 100 msec and
3484 check again. This way, Speedy Gonzales isn't
3485 punished, while the slow get their chance. */
3486 if (press
&& mouse_pressed (1-but
, &x2
, &y2
)
3487 || !press
&& mouse_released (1-but
, &x2
, &y2
))
3492 if (press
&& mouse_pressed (1-but
, &x2
, &y2
)
3493 || !press
&& mouse_released (1-but
, &x2
, &y2
))
3498 event
.kind
= mouse_click
;
3499 event
.code
= button_num
;
3500 event
.modifiers
= dos_get_modifiers (0)
3501 | (press
? down_modifier
: up_modifier
);
3504 event
.frame_or_window
= selected_frame
;
3506 event
.timestamp
= event_timestamp ();
3507 kbd_buffer_store_event (&event
);
3515 static int prev_get_char
= -1;
3517 /* Return 1 if a key is ready to be read without suspending execution. */
3521 if (prev_get_char
!= -1)
3524 return ((prev_get_char
= dos_rawgetc ()) != -1);
3527 /* Read a key. Return -1 if no key is ready. */
3531 if (prev_get_char
!= -1)
3533 int c
= prev_get_char
;
3538 return dos_rawgetc ();
3541 #ifndef HAVE_X_WINDOWS
3542 /* See xterm.c for more info. */
3544 pixel_to_glyph_coords (f
, pix_x
, pix_y
, x
, y
, bounds
, noclip
)
3546 register int pix_x
, pix_y
;
3547 register int *x
, *y
;
3551 if (bounds
) abort ();
3553 /* Ignore clipping. */
3560 glyph_to_pixel_coords (f
, x
, y
, pix_x
, pix_y
)
3563 register int *pix_x
, *pix_y
;
3569 /* Simulation of X's menus. Nothing too fancy here -- just make it work
3572 Actually, I don't know the meaning of all the parameters of the functions
3573 here -- I only know how they are called by xmenu.c. I could of course
3574 grab the nearest Xlib manual (down the hall, second-to-last door on the
3575 left), but I don't think it's worth the effort. */
3577 /* These hold text of the current and the previous menu help messages. */
3578 static char *menu_help_message
, *prev_menu_help_message
;
3579 /* Pane number and item number of the menu item which generated the
3580 last menu help message. */
3581 static int menu_help_paneno
, menu_help_itemno
;
3588 menu
= (XMenu
*) xmalloc (sizeof (XMenu
));
3589 menu
->allocated
= menu
->count
= menu
->panecount
= menu
->width
= 0;
3593 /* Allocate some (more) memory for MENU ensuring that there is room for one
3597 IT_menu_make_room (XMenu
*menu
)
3599 if (menu
->allocated
== 0)
3601 int count
= menu
->allocated
= 10;
3602 menu
->text
= (char **) xmalloc (count
* sizeof (char *));
3603 menu
->submenu
= (XMenu
**) xmalloc (count
* sizeof (XMenu
*));
3604 menu
->panenumber
= (int *) xmalloc (count
* sizeof (int));
3605 menu
->help_text
= (char **) xmalloc (count
* sizeof (char *));
3607 else if (menu
->allocated
== menu
->count
)
3609 int count
= menu
->allocated
= menu
->allocated
+ 10;
3611 = (char **) xrealloc (menu
->text
, count
* sizeof (char *));
3613 = (XMenu
**) xrealloc (menu
->submenu
, count
* sizeof (XMenu
*));
3615 = (int *) xrealloc (menu
->panenumber
, count
* sizeof (int));
3617 = (char **) xrealloc (menu
->help_text
, count
* sizeof (char *));
3621 /* Search the given menu structure for a given pane number. */
3624 IT_menu_search_pane (XMenu
*menu
, int pane
)
3629 for (i
= 0; i
< menu
->count
; i
++)
3630 if (menu
->submenu
[i
])
3632 if (pane
== menu
->panenumber
[i
])
3633 return menu
->submenu
[i
];
3634 if ((try = IT_menu_search_pane (menu
->submenu
[i
], pane
)))
3640 /* Determine how much screen space a given menu needs. */
3643 IT_menu_calc_size (XMenu
*menu
, int *width
, int *height
)
3645 int i
, h2
, w2
, maxsubwidth
, maxheight
;
3648 maxheight
= menu
->count
;
3649 for (i
= 0; i
< menu
->count
; i
++)
3651 if (menu
->submenu
[i
])
3653 IT_menu_calc_size (menu
->submenu
[i
], &w2
, &h2
);
3654 if (w2
> maxsubwidth
) maxsubwidth
= w2
;
3655 if (i
+ h2
> maxheight
) maxheight
= i
+ h2
;
3658 *width
= menu
->width
+ maxsubwidth
;
3659 *height
= maxheight
;
3662 /* Display MENU at (X,Y) using FACES. */
3665 IT_menu_display (XMenu
*menu
, int y
, int x
, int pn
, int *faces
, int disp_help
)
3667 int i
, j
, face
, width
;
3668 struct glyph
*text
, *p
;
3671 int enabled
, mousehere
;
3673 struct frame
*sf
= SELECTED_FRAME();
3675 menu_help_message
= NULL
;
3677 width
= menu
->width
;
3678 text
= (struct glyph
*) xmalloc ((width
+ 2) * sizeof (struct glyph
));
3679 ScreenGetCursor (&row
, &col
);
3680 mouse_get_xy (&mx
, &my
);
3681 IT_update_begin (sf
);
3682 for (i
= 0; i
< menu
->count
; i
++)
3684 int max_width
= width
+ 2;
3686 IT_cursor_to (y
+ i
, x
);
3688 = (!menu
->submenu
[i
] && menu
->panenumber
[i
]) || (menu
->submenu
[i
]);
3689 mousehere
= (y
+ i
== my
&& x
<= mx
&& mx
< x
+ width
+ 2);
3690 face
= faces
[enabled
+ mousehere
* 2];
3691 /* The following if clause means that we display the menu help
3692 strings even if the menu item is currently disabled. */
3693 if (disp_help
&& enabled
+ mousehere
* 2 >= 2)
3695 menu_help_message
= menu
->help_text
[i
];
3696 menu_help_paneno
= pn
- 1;
3697 menu_help_itemno
= i
;
3700 SET_CHAR_GLYPH (*p
, ' ', face
, 0);
3702 for (j
= 0, q
= menu
->text
[i
]; *q
; j
++)
3706 SET_CHAR_GLYPH (*p
, *q
++, face
, 0);
3709 else /* make '^x' */
3711 SET_CHAR_GLYPH (*p
, '^', face
, 0);
3714 SET_CHAR_GLYPH (*p
, *q
++ + 64, face
, 0);
3718 /* Don't let the menu text overflow into the next screen row. */
3719 if (x
+ max_width
> screen_size_X
)
3721 max_width
= screen_size_X
- x
;
3722 text
[max_width
- 1].u
.ch
= '$'; /* indicate it's truncated */
3724 for (; j
< max_width
- 2; j
++, p
++)
3725 SET_CHAR_GLYPH (*p
, ' ', face
, 0);
3727 SET_CHAR_GLYPH (*p
, menu
->submenu
[i
] ? 16 : ' ', face
, 0);
3729 IT_write_glyphs (text
, max_width
);
3732 IT_cursor_to (row
, col
);
3736 /* --------------------------- X Menu emulation ---------------------- */
3738 /* Report availability of menus. */
3746 /* Create a brand new menu structure. */
3749 XMenuCreate (Display
*foo1
, Window foo2
, char *foo3
)
3751 return IT_menu_create ();
3754 /* Create a new pane and place it on the outer-most level. It is not
3755 clear that it should be placed out there, but I don't know what else
3759 XMenuAddPane (Display
*foo
, XMenu
*menu
, char *txt
, int enable
)
3767 IT_menu_make_room (menu
);
3768 menu
->submenu
[menu
->count
] = IT_menu_create ();
3769 menu
->text
[menu
->count
] = txt
;
3770 menu
->panenumber
[menu
->count
] = ++menu
->panecount
;
3771 menu
->help_text
[menu
->count
] = NULL
;
3774 /* Adjust length for possible control characters (which will
3775 be written as ^x). */
3776 for (len
= strlen (txt
), p
= txt
; *p
; p
++)
3780 if (len
> menu
->width
)
3783 return menu
->panecount
;
3786 /* Create a new item in a menu pane. */
3789 XMenuAddSelection (Display
*bar
, XMenu
*menu
, int pane
,
3790 int foo
, char *txt
, int enable
, char *help_text
)
3796 if (!(menu
= IT_menu_search_pane (menu
, pane
)))
3798 IT_menu_make_room (menu
);
3799 menu
->submenu
[menu
->count
] = (XMenu
*) 0;
3800 menu
->text
[menu
->count
] = txt
;
3801 menu
->panenumber
[menu
->count
] = enable
;
3802 menu
->help_text
[menu
->count
] = help_text
;
3805 /* Adjust length for possible control characters (which will
3806 be written as ^x). */
3807 for (len
= strlen (txt
), p
= txt
; *p
; p
++)
3811 if (len
> menu
->width
)
3817 /* Decide where the menu would be placed if requested at (X,Y). */
3820 XMenuLocate (Display
*foo0
, XMenu
*menu
, int foo1
, int foo2
, int x
, int y
,
3821 int *ulx
, int *uly
, int *width
, int *height
)
3823 IT_menu_calc_size (menu
, width
, height
);
3829 struct IT_menu_state
3831 void *screen_behind
;
3838 /* Display menu, wait for user's response, and return that response. */
3841 XMenuActivate (Display
*foo
, XMenu
*menu
, int *pane
, int *selidx
,
3842 int x0
, int y0
, unsigned ButtonMask
, char **txt
,
3843 void (*help_callback
)(char *, int, int))
3845 struct IT_menu_state
*state
;
3850 Lisp_Object selectface
;
3851 int leave
, result
, onepane
;
3852 int title_faces
[4]; /* face to display the menu title */
3853 int buffers_num_deleted
= 0;
3854 struct frame
*sf
= SELECTED_FRAME();
3855 Lisp_Object saved_echo_area_message
;
3857 /* Just in case we got here without a mouse present... */
3858 if (have_mouse
<= 0)
3859 return XM_IA_SELECT
;
3860 /* Don't allow non-positive x0 and y0, lest the menu will wrap
3861 around the display. */
3867 /* We will process all the mouse events directly, so we had
3868 better prevent dos_rawgetc from stealing them from us. */
3871 state
= alloca (menu
->panecount
* sizeof (struct IT_menu_state
));
3872 screensize
= screen_size
* 2;
3874 = lookup_derived_face (sf
, intern ("msdos-menu-passive-face"),
3875 0, DEFAULT_FACE_ID
);
3877 = lookup_derived_face (sf
, intern ("msdos-menu-active-face"),
3878 0, DEFAULT_FACE_ID
);
3879 selectface
= intern ("msdos-menu-select-face");
3880 faces
[2] = lookup_derived_face (sf
, selectface
,
3882 faces
[3] = lookup_derived_face (sf
, selectface
,
3885 /* Make sure the menu title is always displayed with
3886 `msdos-menu-active-face', no matter where the mouse pointer is. */
3887 for (i
= 0; i
< 4; i
++)
3888 title_faces
[i
] = faces
[3];
3892 /* Don't let the title for the "Buffers" popup menu include a
3893 digit (which is ugly).
3895 This is a terrible kludge, but I think the "Buffers" case is
3896 the only one where the title includes a number, so it doesn't
3897 seem to be necessary to make this more general. */
3898 if (strncmp (menu
->text
[0], "Buffers 1", 9) == 0)
3900 menu
->text
[0][7] = '\0';
3901 buffers_num_deleted
= 1;
3904 /* We need to save the current echo area message, so that we could
3905 restore it below, before we exit. See the commentary below,
3906 before the call to message_with_string. */
3907 saved_echo_area_message
= Fcurrent_message ();
3908 state
[0].menu
= menu
;
3910 ScreenRetrieve (state
[0].screen_behind
= xmalloc (screensize
));
3912 /* Turn off the cursor. Otherwise it shows through the menu
3913 panes, which is ugly. */
3914 IT_display_cursor (0);
3916 /* Display the menu title. */
3917 IT_menu_display (menu
, y0
- 1, x0
- 1, 1, title_faces
, 0);
3918 if (buffers_num_deleted
)
3919 menu
->text
[0][7] = ' ';
3920 if ((onepane
= menu
->count
== 1 && menu
->submenu
[0]))
3922 menu
->width
= menu
->submenu
[0]->width
;
3923 state
[0].menu
= menu
->submenu
[0];
3927 state
[0].menu
= menu
;
3929 state
[0].x
= x0
- 1;
3931 state
[0].pane
= onepane
;
3933 mouse_last_x
= -1; /* A hack that forces display. */
3937 if (!mouse_visible
) mouse_on ();
3938 mouse_check_moved ();
3939 if (sf
->mouse_moved
)
3941 sf
->mouse_moved
= 0;
3942 result
= XM_IA_SELECT
;
3943 mouse_get_xy (&x
, &y
);
3944 for (i
= 0; i
< statecount
; i
++)
3945 if (state
[i
].x
<= x
&& x
< state
[i
].x
+ state
[i
].menu
->width
+ 2)
3947 int dy
= y
- state
[i
].y
;
3948 if (0 <= dy
&& dy
< state
[i
].menu
->count
)
3950 if (!state
[i
].menu
->submenu
[dy
])
3951 if (state
[i
].menu
->panenumber
[dy
])
3952 result
= XM_SUCCESS
;
3954 result
= XM_IA_SELECT
;
3955 *pane
= state
[i
].pane
- 1;
3957 /* We hit some part of a menu, so drop extra menus that
3958 have been opened. That does not include an open and
3960 if (i
!= statecount
- 2
3961 || state
[i
].menu
->submenu
[dy
] != state
[i
+1].menu
)
3962 while (i
!= statecount
- 1)
3966 ScreenUpdate (state
[statecount
].screen_behind
);
3967 if (screen_virtual_segment
)
3968 dosv_refresh_virtual_screen (0, screen_size
);
3969 xfree (state
[statecount
].screen_behind
);
3971 if (i
== statecount
- 1 && state
[i
].menu
->submenu
[dy
])
3973 IT_menu_display (state
[i
].menu
,
3978 state
[statecount
].menu
= state
[i
].menu
->submenu
[dy
];
3979 state
[statecount
].pane
= state
[i
].menu
->panenumber
[dy
];
3981 ScreenRetrieve (state
[statecount
].screen_behind
3982 = xmalloc (screensize
));
3984 = state
[i
].x
+ state
[i
].menu
->width
+ 2;
3985 state
[statecount
].y
= y
;
3990 IT_menu_display (state
[statecount
- 1].menu
,
3991 state
[statecount
- 1].y
,
3992 state
[statecount
- 1].x
,
3993 state
[statecount
- 1].pane
,
3998 if ((menu_help_message
|| prev_menu_help_message
)
3999 && menu_help_message
!= prev_menu_help_message
)
4001 help_callback (menu_help_message
,
4002 menu_help_paneno
, menu_help_itemno
);
4003 IT_display_cursor (0);
4004 prev_menu_help_message
= menu_help_message
;
4006 /* We are busy-waiting for the mouse to move, so let's be nice
4007 to other Windows applications by releasing our time slice. */
4010 for (b
= 0; b
< mouse_button_count
&& !leave
; b
++)
4012 /* Only leave if user both pressed and released the mouse, and in
4013 that order. This avoids popping down the menu pane unless
4014 the user is really done with it. */
4015 if (mouse_pressed (b
, &x
, &y
))
4017 while (mouse_button_depressed (b
, &x
, &y
))
4021 (void) mouse_released (b
, &x
, &y
);
4026 ScreenUpdate (state
[0].screen_behind
);
4027 if (screen_virtual_segment
)
4028 dosv_refresh_virtual_screen (0, screen_size
);
4030 /* We have a situation here. ScreenUpdate has just restored the
4031 screen contents as it was before we started drawing this menu.
4032 That includes any echo area message that could have been
4033 displayed back then. (In reality, that echo area message will
4034 almost always be the ``keystroke echo'' that echoes the sequence
4035 of menu items chosen by the user.) However, if the menu had some
4036 help messages, then displaying those messages caused Emacs to
4037 forget about the original echo area message. So when
4038 ScreenUpdate restored it, it created a discrepancy between the
4039 actual screen contents and what Emacs internal data structures
4042 To avoid this conflict, we force Emacs to restore the original
4043 echo area message as we found it when we entered this function.
4044 The irony of this is that we then erase the restored message
4045 right away, so the only purpose of restoring it is so that
4046 erasing it works correctly... */
4047 if (! NILP (saved_echo_area_message
))
4048 message_with_string ("%s", saved_echo_area_message
, 0);
4050 while (statecount
--)
4051 xfree (state
[statecount
].screen_behind
);
4052 IT_display_cursor (1); /* turn cursor back on */
4053 /* Clean up any mouse events that are waiting inside Emacs event queue.
4054 These events are likely to be generated before the menu was even
4055 displayed, probably because the user pressed and released the button
4056 (which invoked the menu) too quickly. If we don't remove these events,
4057 Emacs will process them after we return and surprise the user. */
4058 discard_mouse_events ();
4059 mouse_clear_clicks ();
4060 if (!kbd_buffer_events_waiting (1))
4061 clear_input_pending ();
4062 /* Allow mouse events generation by dos_rawgetc. */
4067 /* Dispose of a menu. */
4070 XMenuDestroy (Display
*foo
, XMenu
*menu
)
4073 if (menu
->allocated
)
4075 for (i
= 0; i
< menu
->count
; i
++)
4076 if (menu
->submenu
[i
])
4077 XMenuDestroy (foo
, menu
->submenu
[i
]);
4079 xfree (menu
->submenu
);
4080 xfree (menu
->panenumber
);
4081 xfree (menu
->help_text
);
4084 menu_help_message
= prev_menu_help_message
= NULL
;
4088 x_pixel_width (struct frame
*f
)
4090 return FRAME_WIDTH (f
);
4094 x_pixel_height (struct frame
*f
)
4096 return FRAME_HEIGHT (f
);
4098 #endif /* !HAVE_X_WINDOWS */
4100 /* ----------------------- DOS / UNIX conversion --------------------- */
4102 void msdos_downcase_filename (unsigned char *);
4104 /* Destructively turn backslashes into slashes. */
4107 dostounix_filename (p
)
4110 msdos_downcase_filename (p
);
4120 /* Destructively turn slashes into backslashes. */
4123 unixtodos_filename (p
)
4126 if (p
[1] == ':' && *p
>= 'A' && *p
<= 'Z')
4140 /* Get the default directory for a given drive. 0=def, 1=A, 2=B, ... */
4143 getdefdir (drive
, dst
)
4147 char in_path
[4], *p
= in_path
;
4150 /* Generate "X:." (when drive is X) or "." (when drive is 0). */
4153 *p
++ = drive
+ 'A' - 1;
4160 _fixpath (in_path
, dst
);
4161 /* _fixpath can set errno to ENOSYS on non-LFN systems because
4162 it queries the LFN support, so ignore that error. */
4163 if ((errno
&& errno
!= ENOSYS
) || *dst
== '\0')
4166 msdos_downcase_filename (dst
);
4173 emacs_root_dir (void)
4175 static char root_dir
[4];
4177 sprintf (root_dir
, "%c:/", 'A' + getdisk ());
4178 root_dir
[0] = tolower (root_dir
[0]);
4182 /* Remove all CR's that are followed by a LF. */
4187 register unsigned char *buf
;
4189 unsigned char *np
= buf
;
4190 unsigned char *startp
= buf
;
4191 unsigned char *endp
= buf
+ n
;
4195 while (buf
< endp
- 1)
4199 if (*(++buf
) != 0x0a)
4210 #if defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 0
4212 /* In DJGPP v2.0, library `write' can call `malloc', which might
4213 cause relocation of the buffer whose address we get in ADDR.
4214 Here is a version of `write' that avoids calling `malloc',
4215 to serve us until such time as the library is fixed.
4216 Actually, what we define here is called `__write', because
4217 `write' is a stub that just jmp's to `__write' (to be
4218 POSIXLY-correct with respect to the global name-space). */
4220 #include <io.h> /* for _write */
4221 #include <libc/dosio.h> /* for __file_handle_modes[] */
4223 static char xbuf
[64 * 1024]; /* DOS cannot write more in one chunk */
4225 #define XBUF_END (xbuf + sizeof (xbuf) - 1)
4228 __write (int handle
, const void *buffer
, size_t count
)
4233 if(__file_handle_modes
[handle
] & O_BINARY
)
4234 return _write (handle
, buffer
, count
);
4238 const char *bp
= buffer
;
4239 int total_written
= 0;
4240 int nmoved
= 0, ncr
= 0;
4244 /* The next test makes sure there's space for at least 2 more
4245 characters in xbuf[], so both CR and LF can be put there. */
4257 if (xbp
>= XBUF_END
|| !count
)
4259 size_t to_write
= nmoved
+ ncr
;
4260 int written
= _write (handle
, xbuf
, to_write
);
4265 total_written
+= nmoved
; /* CRs aren't counted in ret value */
4267 /* If some, but not all were written (disk full?), return
4268 an estimate of the total written bytes not counting CRs. */
4269 if (written
< to_write
)
4270 return total_written
- (to_write
- written
) * nmoved
/to_write
;
4277 return total_written
;
4281 /* A low-level file-renaming function which works around Windows 95 bug.
4282 This is pulled directly out of DJGPP v2.01 library sources, and only
4283 used when you compile with DJGPP v2.0. */
4287 int _rename(const char *old
, const char *new)
4290 int olen
= strlen(old
) + 1;
4292 int use_lfn
= _USE_LFN
;
4293 char tempfile
[FILENAME_MAX
];
4294 const char *orig
= old
;
4297 r
.x
.dx
= __tb_offset
;
4298 r
.x
.di
= __tb_offset
+ olen
;
4299 r
.x
.ds
= r
.x
.es
= __tb_segment
;
4303 /* Windows 95 bug: for some filenames, when you rename
4304 file -> file~ (as in Emacs, to leave a backup), the
4305 short 8+3 alias doesn't change, which effectively
4306 makes OLD and NEW the same file. We must rename
4307 through a temporary file to work around this. */
4309 char *pbase
= 0, *p
;
4310 static char try_char
[] = "abcdefghijklmnopqrstuvwxyz012345789";
4311 int idx
= sizeof(try_char
) - 1;
4313 /* Generate a temporary name. Can't use `tmpnam', since $TMPDIR
4314 might point to another drive, which will fail the DOS call. */
4315 strcpy(tempfile
, old
);
4316 for (p
= tempfile
; *p
; p
++) /* ensure temporary is on the same drive */
4317 if (*p
== '/' || *p
== '\\' || *p
== ':')
4323 strcpy(pbase
, "X$$djren$$.$$temp$$");
4329 *pbase
= try_char
[--idx
];
4330 } while (_chmod(tempfile
, 0) != -1);
4333 _put_path2(tempfile
, olen
);
4335 __dpmi_int(0x21, &r
);
4338 errno
= __doserr_to_errno(r
.x
.ax
);
4342 /* Now create a file with the original name. This will
4343 ensure that NEW will always have a 8+3 alias
4344 different from that of OLD. (Seems to be required
4345 when NameNumericTail in the Registry is set to 0.) */
4346 lfn_fd
= _creat(old
, 0);
4348 olen
= strlen(tempfile
) + 1;
4350 r
.x
.di
= __tb_offset
+ olen
;
4359 _put_path2(new, olen
);
4361 __dpmi_int(0x21, &r
);
4364 if (r
.x
.ax
== 5 && i
== 0) /* access denied */
4365 remove(new); /* and try again */
4368 errno
= __doserr_to_errno(r
.x
.ax
);
4370 /* Restore to original name if we renamed it to temporary. */
4378 _put_path2(orig
, olen
);
4379 _put_path(tempfile
);
4381 __dpmi_int(0x21, &r
);
4390 /* Success. Delete the file possibly created to work
4391 around the Windows 95 bug. */
4393 return (_close (lfn_fd
) == 0) ? remove (orig
) : -1;
4397 #endif /* __DJGPP__ == 2 && __DJGPP_MINOR__ == 0 */
4399 DEFUN ("msdos-long-file-names", Fmsdos_long_file_names
, Smsdos_long_file_names
,
4401 doc
: /* Return non-nil if long file names are supported on MSDOS. */)
4404 return (_USE_LFN
? Qt
: Qnil
);
4407 /* Convert alphabetic characters in a filename to lower-case. */
4410 msdos_downcase_filename (p
)
4411 register unsigned char *p
;
4413 /* Always lower-case drive letters a-z, even if the filesystem
4414 preserves case in filenames.
4415 This is so MSDOS filenames could be compared by string comparison
4416 functions that are case-sensitive. Even case-preserving filesystems
4417 do not distinguish case in drive letters. */
4418 if (p
[1] == ':' && *p
>= 'A' && *p
<= 'Z')
4424 /* Under LFN we expect to get pathnames in their true case. */
4425 if (NILP (Fmsdos_long_file_names ()))
4427 if (*p
>= 'A' && *p
<= 'Z')
4431 DEFUN ("msdos-downcase-filename", Fmsdos_downcase_filename
, Smsdos_downcase_filename
,
4433 doc
: /* Convert alphabetic characters in FILENAME to lower case and return that.
4434 When long filenames are supported, doesn't change FILENAME.
4435 If FILENAME is not a string, returns nil.
4436 The argument object is never altered--the value is a copy. */)
4438 Lisp_Object filename
;
4442 if (! STRINGP (filename
))
4445 tem
= Fcopy_sequence (filename
);
4446 msdos_downcase_filename (XSTRING (tem
)->data
);
4450 /* The Emacs root directory as determined by init_environment. */
4452 static char emacsroot
[MAXPATHLEN
];
4455 rootrelativepath (rel
)
4458 static char result
[MAXPATHLEN
+ 10];
4460 strcpy (result
, emacsroot
);
4461 strcat (result
, "/");
4462 strcat (result
, rel
);
4466 /* Define a lot of environment variables if not already defined. Don't
4467 remove anything unless you know what you're doing -- lots of code will
4468 break if one or more of these are missing. */
4471 init_environment (argc
, argv
, skip_args
)
4478 static const char * const tempdirs
[] = {
4479 "$TMPDIR", "$TEMP", "$TMP", "c:/"
4482 const int imax
= sizeof (tempdirs
) / sizeof (tempdirs
[0]);
4484 /* Make sure they have a usable $TMPDIR. Many Emacs functions use
4485 temporary files and assume "/tmp" if $TMPDIR is unset, which
4486 will break on DOS/Windows. Refuse to work if we cannot find
4487 a directory, not even "c:/", usable for that purpose. */
4488 for (i
= 0; i
< imax
; i
++)
4490 const char *tmp
= tempdirs
[i
];
4493 tmp
= getenv (tmp
+ 1);
4494 /* Note that `access' can lie to us if the directory resides on a
4495 read-only filesystem, like CD-ROM or a write-protected floppy.
4496 The only way to be really sure is to actually create a file and
4497 see if it succeeds. But I think that's too much to ask. */
4498 if (tmp
&& access (tmp
, D_OK
) == 0)
4500 setenv ("TMPDIR", tmp
, 1);
4507 Fcons (build_string ("no usable temporary directories found!!"),
4509 "While setting TMPDIR: ");
4511 /* Note the startup time, so we know not to clear the screen if we
4512 exit immediately; see IT_reset_terminal_modes.
4513 (Yes, I know `clock' returns zero the first time it's called, but
4514 I do this anyway, in case some wiseguy changes that at some point.) */
4515 startup_time
= clock ();
4517 /* Find our root from argv[0]. Assuming argv[0] is, say,
4518 "c:/emacs/bin/emacs.exe" our root will be "c:/emacs". */
4519 root
= alloca (MAXPATHLEN
+ 20);
4520 _fixpath (argv
[0], root
);
4521 msdos_downcase_filename (root
);
4522 len
= strlen (root
);
4523 while (len
> 0 && root
[len
] != '/' && root
[len
] != ':')
4527 && (strcmp (root
+ len
- 4, "/bin") == 0
4528 || strcmp (root
+ len
- 4, "/src") == 0)) /* under a debugger */
4529 root
[len
- 4] = '\0';
4531 strcpy (root
, "c:/emacs"); /* let's be defensive */
4532 len
= strlen (root
);
4533 strcpy (emacsroot
, root
);
4535 /* We default HOME to our root. */
4536 setenv ("HOME", root
, 0);
4538 /* We default EMACSPATH to root + "/bin". */
4539 strcpy (root
+ len
, "/bin");
4540 setenv ("EMACSPATH", root
, 0);
4542 /* I don't expect anybody to ever use other terminals so the internal
4543 terminal is the default. */
4544 setenv ("TERM", "internal", 0);
4546 #ifdef HAVE_X_WINDOWS
4547 /* Emacs expects DISPLAY to be set. */
4548 setenv ("DISPLAY", "unix:0.0", 0);
4551 /* SHELL is a bit tricky -- COMSPEC is the closest we come, but we must
4552 downcase it and mirror the backslashes. */
4553 s
= getenv ("COMSPEC");
4554 if (!s
) s
= "c:/command.com";
4555 t
= alloca (strlen (s
) + 1);
4557 dostounix_filename (t
);
4558 setenv ("SHELL", t
, 0);
4560 /* PATH is also downcased and backslashes mirrored. */
4561 s
= getenv ("PATH");
4563 t
= alloca (strlen (s
) + 3);
4564 /* Current directory is always considered part of MsDos's path but it is
4565 not normally mentioned. Now it is. */
4566 strcat (strcpy (t
, ".;"), s
);
4567 dostounix_filename (t
); /* Not a single file name, but this should work. */
4568 setenv ("PATH", t
, 1);
4570 /* In some sense all dos users have root privileges, so... */
4571 setenv ("USER", "root", 0);
4572 setenv ("NAME", getenv ("USER"), 0);
4574 /* Time zone determined from country code. To make this possible, the
4575 country code may not span more than one time zone. In other words,
4576 in the USA, you lose. */
4578 switch (dos_country_code
)
4580 case 31: /* Belgium */
4581 case 32: /* The Netherlands */
4582 case 33: /* France */
4583 case 34: /* Spain */
4584 case 36: /* Hungary */
4585 case 38: /* Yugoslavia (or what's left of it?) */
4586 case 39: /* Italy */
4587 case 41: /* Switzerland */
4588 case 42: /* Tjekia */
4589 case 45: /* Denmark */
4590 case 46: /* Sweden */
4591 case 47: /* Norway */
4592 case 48: /* Poland */
4593 case 49: /* Germany */
4594 /* Daylight saving from last Sunday in March to last Sunday in
4595 September, both at 2AM. */
4596 setenv ("TZ", "MET-01METDST-02,M3.5.0/02:00,M9.5.0/02:00", 0);
4598 case 44: /* United Kingdom */
4599 case 351: /* Portugal */
4600 case 354: /* Iceland */
4601 setenv ("TZ", "GMT+00", 0);
4603 case 81: /* Japan */
4604 case 82: /* Korea */
4605 setenv ("TZ", "JST-09", 0);
4607 case 90: /* Turkey */
4608 case 358: /* Finland */
4609 setenv ("TZ", "EET-02", 0);
4611 case 972: /* Israel */
4612 /* This is an approximation. (For exact rules, use the
4613 `zoneinfo/israel' file which comes with DJGPP, but you need
4614 to install it in `/usr/share/zoneinfo/' directory first.) */
4615 setenv ("TZ", "IST-02IDT-03,M4.1.6/00:00,M9.5.6/01:00", 0);
4623 static int break_stat
; /* BREAK check mode status. */
4624 static int stdin_stat
; /* stdin IOCTL status. */
4628 /* These must be global. */
4629 static _go32_dpmi_seginfo ctrl_break_vector
;
4630 static _go32_dpmi_registers ctrl_break_regs
;
4631 static int ctrlbreakinstalled
= 0;
4633 /* Interrupt level detection of Ctrl-Break. Don't do anything fancy here! */
4636 ctrl_break_func (regs
)
4637 _go32_dpmi_registers
*regs
;
4643 install_ctrl_break_check ()
4645 if (!ctrlbreakinstalled
)
4647 /* Don't press Ctrl-Break if you don't have either DPMI or Emacs
4648 was compiler with Djgpp 1.11 maintenance level 5 or later! */
4649 ctrlbreakinstalled
= 1;
4650 ctrl_break_vector
.pm_offset
= (int) ctrl_break_func
;
4651 _go32_dpmi_allocate_real_mode_callback_iret (&ctrl_break_vector
,
4653 _go32_dpmi_set_real_mode_interrupt_vector (0x1b, &ctrl_break_vector
);
4657 #endif /* __DJGPP__ < 2 */
4659 /* Turn off Dos' Ctrl-C checking and inhibit interpretation of
4660 control chars by DOS. Determine the keyboard type. */
4665 union REGS inregs
, outregs
;
4666 static int first_time
= 1;
4668 break_stat
= getcbrk ();
4671 install_ctrl_break_check ();
4677 int86 (0x15, &inregs
, &outregs
);
4678 extended_kbd
= (!outregs
.x
.cflag
) && (outregs
.h
.ah
== 0);
4682 if (internal_terminal
4683 #ifdef HAVE_X_WINDOWS
4684 && inhibit_window_system
4688 inregs
.x
.ax
= 0x0021;
4689 int86 (0x33, &inregs
, &outregs
);
4690 have_mouse
= (outregs
.x
.ax
& 0xffff) == 0xffff;
4693 /* Reportedly, the above doesn't work for some mouse drivers. There
4694 is an additional detection method that should work, but might be
4695 a little slower. Use that as an alternative. */
4696 inregs
.x
.ax
= 0x0000;
4697 int86 (0x33, &inregs
, &outregs
);
4698 have_mouse
= (outregs
.x
.ax
& 0xffff) == 0xffff;
4703 have_mouse
= 1; /* enable mouse */
4705 mouse_setup_buttons (outregs
.x
.bx
);
4706 mouse_position_hook
= &mouse_get_pos
;
4710 #ifndef HAVE_X_WINDOWS
4712 /* Save the cursor shape used outside Emacs. */
4713 outside_cursor
= _farpeekw (_dos_ds
, 0x460);
4722 stdin_stat
= setmode (fileno (stdin
), O_BINARY
);
4723 return (stdin_stat
!= -1);
4726 return (setmode (fileno (stdin
), O_BINARY
) != -1);
4728 #else /* __DJGPP__ < 2 */
4732 /* I think it is wrong to overwrite `stdin_stat' every time
4733 but the first one this function is called, but I don't
4734 want to change the way it used to work in v1.x.--EZ */
4736 inregs
.x
.ax
= 0x4400; /* Get IOCTL status. */
4737 inregs
.x
.bx
= 0x00; /* 0 = stdin. */
4738 intdos (&inregs
, &outregs
);
4739 stdin_stat
= outregs
.h
.dl
;
4741 inregs
.x
.dx
= stdin_stat
| 0x0020; /* raw mode */
4742 inregs
.x
.ax
= 0x4401; /* Set IOCTL status */
4743 intdos (&inregs
, &outregs
);
4744 return !outregs
.x
.cflag
;
4746 #endif /* __DJGPP__ < 2 */
4749 /* Restore status of standard input and Ctrl-C checking. */
4754 union REGS inregs
, outregs
;
4756 setcbrk (break_stat
);
4761 #ifndef HAVE_X_WINDOWS
4762 /* Restore the cursor shape we found on startup. */
4766 inregs
.x
.cx
= outside_cursor
;
4767 int86 (0x10, &inregs
, &outregs
);
4771 return (setmode (fileno (stdin
), stdin_stat
) != -1);
4773 #else /* not __DJGPP__ >= 2 */
4775 inregs
.x
.ax
= 0x4401; /* Set IOCTL status. */
4776 inregs
.x
.bx
= 0x00; /* 0 = stdin. */
4777 inregs
.x
.dx
= stdin_stat
;
4778 intdos (&inregs
, &outregs
);
4779 return !outregs
.x
.cflag
;
4781 #endif /* not __DJGPP__ >= 2 */
4785 /* Run command as specified by ARGV in directory DIR.
4786 The command is run with input from TEMPIN, output to
4787 file TEMPOUT and stderr to TEMPERR. */
4790 run_msdos_command (argv
, working_dir
, tempin
, tempout
, temperr
, envv
)
4791 unsigned char **argv
;
4792 const char *working_dir
;
4793 int tempin
, tempout
, temperr
;
4796 char *saveargv1
, *saveargv2
, *lowcase_argv0
, *pa
, *pl
;
4797 char oldwd
[MAXPATHLEN
+ 1]; /* Fixed size is safe on MSDOS. */
4798 int msshell
, result
= -1;
4799 int inbak
, outbak
, errbak
;
4803 /* Get current directory as MSDOS cwd is not per-process. */
4806 /* If argv[0] is the shell, it might come in any lettercase.
4807 Since `Fmember' is case-sensitive, we need to downcase
4808 argv[0], even if we are on case-preserving filesystems. */
4809 lowcase_argv0
= alloca (strlen (argv
[0]) + 1);
4810 for (pa
= argv
[0], pl
= lowcase_argv0
; *pa
; pl
++)
4813 if (*pl
>= 'A' && *pl
<= 'Z')
4818 cmd
= Ffile_name_nondirectory (build_string (lowcase_argv0
));
4819 msshell
= !NILP (Fmember (cmd
, Fsymbol_value (intern ("msdos-shells"))))
4820 && !strcmp ("-c", argv
[1]);
4823 saveargv1
= argv
[1];
4824 saveargv2
= argv
[2];
4826 /* We only need to mirror slashes if a DOS shell will be invoked
4827 not via `system' (which does the mirroring itself). Yes, that
4828 means DJGPP v1.x will lose here. */
4829 if (argv
[2] && argv
[3])
4831 char *p
= alloca (strlen (argv
[2]) + 1);
4833 strcpy (argv
[2] = p
, saveargv2
);
4834 while (*p
&& isspace (*p
))
4846 chdir (working_dir
);
4850 if (inbak
< 0 || outbak
< 0 || errbak
< 0)
4851 goto done
; /* Allocation might fail due to lack of descriptors. */
4854 mouse_get_xy (&x
, &y
);
4856 dos_ttcooked (); /* do it here while 0 = stdin */
4864 if (msshell
&& !argv
[3])
4866 /* MS-DOS native shells are too restrictive. For starters, they
4867 cannot grok commands longer than 126 characters. In DJGPP v2
4868 and later, `system' is much smarter, so we'll call it instead. */
4872 /* A shell gets a single argument--its full command
4873 line--whose original was saved in `saveargv2'. */
4875 /* Don't let them pass empty command lines to `system', since
4876 with some shells it will try to invoke an interactive shell,
4877 which will hang Emacs. */
4878 for (cmnd
= saveargv2
; *cmnd
&& isspace (*cmnd
); cmnd
++)
4882 extern char **environ
;
4883 char **save_env
= environ
;
4884 int save_system_flags
= __system_flags
;
4886 /* Request the most powerful version of `system'. We need
4887 all the help we can get to avoid calling stock DOS shells. */
4888 __system_flags
= (__system_redirect
4889 | __system_use_shell
4890 | __system_allow_multiple_cmds
4891 | __system_allow_long_cmds
4892 | __system_handle_null_commands
4893 | __system_emulate_chdir
);
4896 result
= system (cmnd
);
4897 __system_flags
= save_system_flags
;
4901 result
= 0; /* emulate Unixy shell behavior with empty cmd line */
4905 #endif /* __DJGPP__ > 1 */
4907 result
= spawnve (P_WAIT
, argv
[0], argv
, envv
);
4912 emacs_close (inbak
);
4913 emacs_close (outbak
);
4914 emacs_close (errbak
);
4920 mouse_moveto (x
, y
);
4923 /* Some programs might change the meaning of the highest bit of the
4924 text attribute byte, so we get blinking characters instead of the
4925 bright background colors. Restore that. */
4932 argv
[1] = saveargv1
;
4933 argv
[2] = saveargv2
;
4941 fprintf (stderr
, "%s not yet implemented\r\n", badfunc
);
4948 /* ------------------------- Compatibility functions -------------------
4953 /* Hostnames for a pc are not really funny,
4954 but they are used in change log so we emulate the best we can. */
4956 gethostname (p
, size
)
4960 char *q
= egetenv ("HOSTNAME");
4967 /* When time zones are set from Ms-Dos too many C-libraries are playing
4968 tricks with time values. We solve this by defining our own version
4969 of `gettimeofday' bypassing GO32. Our version needs to be initialized
4970 once and after each call to `tzset' with TZ changed. That is
4971 accomplished by aliasing tzset to init_gettimeofday. */
4973 static struct tm time_rec
;
4976 gettimeofday (struct timeval
*tp
, struct timezone
*tzp
)
4984 if (t
.ti_hour
< time_rec
.tm_hour
) /* midnight wrap */
4988 time_rec
.tm_year
= d
.da_year
- 1900;
4989 time_rec
.tm_mon
= d
.da_mon
- 1;
4990 time_rec
.tm_mday
= d
.da_day
;
4993 time_rec
.tm_hour
= t
.ti_hour
;
4994 time_rec
.tm_min
= t
.ti_min
;
4995 time_rec
.tm_sec
= t
.ti_sec
;
4998 tm
.tm_gmtoff
= dos_timezone_offset
;
5000 tp
->tv_sec
= mktime (&tm
); /* may modify tm */
5001 tp
->tv_usec
= t
.ti_hund
* (1000000 / 100);
5003 /* Ignore tzp; it's obsolescent. */
5007 #endif /* __DJGPP__ < 2 */
5010 * A list of unimplemented functions that we silently ignore.
5014 unsigned alarm (s
) unsigned s
; {}
5015 fork () { return 0; }
5016 int kill (x
, y
) int x
, y
; { return -1; }
5018 void volatile pause () {}
5019 sigsetmask (x
) int x
; { return 0; }
5020 sigblock (mask
) int mask
; { return 0; }
5023 void request_sigio (void) {}
5024 setpgrp () {return 0; }
5025 setpriority (x
,y
,z
) int x
,y
,z
; { return 0; }
5026 void unrequest_sigio (void) {}
5030 #ifdef POSIX_SIGNALS
5032 /* Augment DJGPP library POSIX signal functions. This is needed
5033 as of DJGPP v2.01, but might be in the library in later releases. */
5035 #include <libc/bss.h>
5037 /* A counter to know when to re-initialize the static sets. */
5038 static int sigprocmask_count
= -1;
5040 /* Which signals are currently blocked (initially none). */
5041 static sigset_t current_mask
;
5043 /* Which signals are pending (initially none). */
5044 static sigset_t pending_signals
;
5046 /* Previous handlers to restore when the blocked signals are unblocked. */
5047 typedef void (*sighandler_t
)(int);
5048 static sighandler_t prev_handlers
[320];
5050 /* A signal handler which just records that a signal occured
5051 (it will be raised later, if and when the signal is unblocked). */
5053 sig_suspender (signo
)
5056 sigaddset (&pending_signals
, signo
);
5060 sigprocmask (how
, new_set
, old_set
)
5062 const sigset_t
*new_set
;
5068 /* If called for the first time, initialize. */
5069 if (sigprocmask_count
!= __bss_count
)
5071 sigprocmask_count
= __bss_count
;
5072 sigemptyset (&pending_signals
);
5073 sigemptyset (¤t_mask
);
5074 for (signo
= 0; signo
< 320; signo
++)
5075 prev_handlers
[signo
] = SIG_ERR
;
5079 *old_set
= current_mask
;
5084 if (how
!= SIG_BLOCK
&& how
!= SIG_UNBLOCK
&& how
!= SIG_SETMASK
)
5090 sigemptyset (&new_mask
);
5092 /* DJGPP supports upto 320 signals. */
5093 for (signo
= 0; signo
< 320; signo
++)
5095 if (sigismember (¤t_mask
, signo
))
5096 sigaddset (&new_mask
, signo
);
5097 else if (sigismember (new_set
, signo
) && how
!= SIG_UNBLOCK
)
5099 sigaddset (&new_mask
, signo
);
5101 /* SIGKILL is silently ignored, as on other platforms. */
5102 if (signo
!= SIGKILL
&& prev_handlers
[signo
] == SIG_ERR
)
5103 prev_handlers
[signo
] = signal (signo
, sig_suspender
);
5105 if (( how
== SIG_UNBLOCK
5106 && sigismember (&new_mask
, signo
)
5107 && sigismember (new_set
, signo
))
5108 || (how
== SIG_SETMASK
5109 && sigismember (&new_mask
, signo
)
5110 && !sigismember (new_set
, signo
)))
5112 sigdelset (&new_mask
, signo
);
5113 if (prev_handlers
[signo
] != SIG_ERR
)
5115 signal (signo
, prev_handlers
[signo
]);
5116 prev_handlers
[signo
] = SIG_ERR
;
5118 if (sigismember (&pending_signals
, signo
))
5120 sigdelset (&pending_signals
, signo
);
5125 current_mask
= new_mask
;
5129 #else /* not POSIX_SIGNALS */
5131 sigsetmask (x
) int x
; { return 0; }
5132 sigblock (mask
) int mask
; { return 0; }
5134 #endif /* not POSIX_SIGNALS */
5135 #endif /* __DJGPP__ > 1 */
5138 #include "sysselect.h"
5140 #ifndef EMACS_TIME_ZERO_OR_NEG_P
5141 #define EMACS_TIME_ZERO_OR_NEG_P(time) \
5142 ((long)(time).tv_sec < 0 \
5143 || ((time).tv_sec == 0 \
5144 && (long)(time).tv_usec <= 0))
5147 /* This yields the rest of the current time slice to the task manager.
5148 It should be called by any code which knows that it has nothing
5149 useful to do except idle.
5151 I don't use __dpmi_yield here, since versions of library before 2.02
5152 called Int 2Fh/AX=1680h there in a way that would wedge the DOS box
5153 on some versions of Windows 9X. */
5156 dos_yield_time_slice (void)
5158 _go32_dpmi_registers r
;
5161 r
.x
.ss
= r
.x
.sp
= r
.x
.flags
= 0;
5162 _go32_dpmi_simulate_int (0x2f, &r
);
5167 /* Only event queue is checked. */
5168 /* We don't have to call timer_check here
5169 because wait_reading_process_input takes care of that. */
5171 sys_select (nfds
, rfds
, wfds
, efds
, timeout
)
5173 SELECT_TYPE
*rfds
, *wfds
, *efds
;
5174 EMACS_TIME
*timeout
;
5182 check_input
= FD_ISSET (0, rfds
);
5193 /* If we are looking only for the terminal, with no timeout,
5194 just read it and wait -- that's more efficient. */
5197 while (!detect_input_pending ())
5199 dos_yield_time_slice ();
5204 EMACS_TIME clnow
, cllast
, cldiff
;
5207 EMACS_SET_SECS_USECS (cllast
, t
.ti_sec
, t
.ti_hund
* 10000L);
5209 while (!check_input
|| !detect_input_pending ())
5212 EMACS_SET_SECS_USECS (clnow
, t
.ti_sec
, t
.ti_hund
* 10000L);
5213 EMACS_SUB_TIME (cldiff
, clnow
, cllast
);
5215 /* When seconds wrap around, we assume that no more than
5216 1 minute passed since last `gettime'. */
5217 if (EMACS_TIME_NEG_P (cldiff
))
5218 EMACS_SET_SECS (cldiff
, EMACS_SECS (cldiff
) + 60);
5219 EMACS_SUB_TIME (*timeout
, *timeout
, cldiff
);
5221 /* Stop when timeout value crosses zero. */
5222 if (EMACS_TIME_ZERO_OR_NEG_P (*timeout
))
5225 dos_yield_time_slice ();
5235 * Define overlaid functions:
5237 * chdir -> sys_chdir
5238 * tzset -> init_gettimeofday
5239 * abort -> dos_abort
5244 extern int chdir ();
5250 int len
= strlen (path
);
5251 char *tmp
= (char *)path
;
5253 if (*tmp
&& tmp
[1] == ':')
5255 if (getdisk () != tolower (tmp
[0]) - 'a')
5256 setdisk (tolower (tmp
[0]) - 'a');
5257 tmp
+= 2; /* strip drive: KFS 1995-07-06 */
5261 if (len
> 1 && (tmp
[len
- 1] == '/'))
5263 char *tmp1
= (char *) alloca (len
+ 1);
5274 extern void tzset (void);
5277 init_gettimeofday ()
5283 ltm
= gtm
= time (NULL
);
5284 ltm
= mktime (lstm
= localtime (<m
));
5285 gtm
= mktime (gmtime (>m
));
5286 time_rec
.tm_hour
= 99; /* force gettimeofday to get date */
5287 time_rec
.tm_isdst
= lstm
->tm_isdst
;
5288 dos_timezone_offset
= time_rec
.tm_gmtoff
= (int)(gtm
- ltm
) / 60;
5295 dos_abort (file
, line
)
5299 char buffer1
[200], buffer2
[400];
5302 sprintf (buffer1
, "<EMACS FATAL ERROR IN %s LINE %d>", file
, line
);
5303 for (i
= j
= 0; buffer1
[i
]; i
++) {
5304 buffer2
[j
++] = buffer1
[i
];
5305 buffer2
[j
++] = 0x70;
5307 dosmemput (buffer2
, j
, (int)ScreenPrimary
);
5308 ScreenSetCursor (2, 0);
5316 ScreenSetCursor (10, 0);
5317 cputs ("\r\n\nEmacs aborted!\r\n");
5319 #if __DJGPP__ == 2 && __DJGPP_MINOR__ < 2
5320 if (screen_virtual_segment
)
5321 dosv_refresh_virtual_screen (2 * 10 * screen_size_X
, 4 * screen_size_X
);
5322 /* Generate traceback, so we could tell whodunit. */
5323 signal (SIGINT
, SIG_DFL
);
5324 __asm__
__volatile__ ("movb $0x1b,%al;call ___djgpp_hw_exception");
5325 #else /* __DJGPP_MINOR__ >= 2 */
5327 #endif /* __DJGPP_MINOR__ >= 2 */
5333 /* The following variables are required so that cus-start.el won't
5334 complain about unbound variables. */
5335 #ifndef subprocesses
5336 /* Nonzero means delete a process right away if it exits (process.c). */
5337 static int delete_exited_processes
;
5342 recent_doskeys
= Fmake_vector (make_number (NUM_RECENT_DOSKEYS
), Qnil
);
5343 staticpro (&recent_doskeys
);
5344 #ifndef HAVE_X_WINDOWS
5346 staticpro (&help_echo
);
5347 help_echo_object
= Qnil
;
5348 staticpro (&help_echo_object
);
5349 help_echo_window
= Qnil
;
5350 staticpro (&help_echo_window
);
5351 previous_help_echo
= Qnil
;
5352 staticpro (&previous_help_echo
);
5355 /* The following two are from xfns.c: */
5356 Qbar
= intern ("bar");
5358 Qcursor_type
= intern ("cursor-type");
5359 staticpro (&Qcursor_type
);
5360 Qreverse
= intern ("reverse");
5361 staticpro (&Qreverse
);
5363 DEFVAR_LISP ("dos-unsupported-char-glyph", &Vdos_unsupported_char_glyph
,
5364 doc
: /* *Glyph to display instead of chars not supported by current codepage.
5366 This variable is used only by MSDOS terminals. */);
5367 Vdos_unsupported_char_glyph
= '\177';
5369 DEFVAR_BOOL ("x-autoselect-window", &x_autoselect_window_p
,
5370 doc
: /* *Non-nil means autoselect window with mouse pointer. */);
5371 x_autoselect_window_p
= 0;
5373 #ifndef subprocesses
5374 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
5375 doc
: /* *Non-nil means delete processes immediately when they exit.
5376 nil means don't delete them until `list-processes' is run. */);
5377 delete_exited_processes
= 0;
5380 defsubr (&Srecent_doskeys
);
5381 defsubr (&Smsdos_long_file_names
);
5382 defsubr (&Smsdos_downcase_filename
);
5383 defsubr (&Smsdos_remember_default_colors
);
5384 defsubr (&Smsdos_set_mouse_buttons
);