1 /* X Communication module for terminals which understand the X protocol.
2 Copyright (C) 1989, 1992 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
22 Kludge: dup2 is used to put the X-connection socket into desc # 0
23 so that wait_reading_process_input will wait for it in place of
24 actual terminal input.
34 /* On 4.3 this loses if it comes after xterm.h. */
37 /* This may include sys/types.h, and that somehow loses
38 if this is not done before the other system files. */
41 /* Load sys/types.h if not already loaded.
42 In some systems loading it twice is suicidal. */
44 #include <sys/types.h>
48 #include <sys/ioctl.h>
51 #include <sys/termio.h>
55 /* Allow m- file to inhibit use of FIONREAD. */
56 #ifdef BROKEN_FIONREAD
60 /* We are unable to use interrupts if FIONREAD is not available,
61 so flush SIGIO so we won't try. */
76 #include <sys/param.h>
78 #include "dispextern.h"
79 #include "termhooks.h"
92 #define XMapWindow XMapRaised /* Raise them when mapping. */
94 #include <X/Xkeyboard.h>
95 /*#include <X/Xproto.h> */
98 /* For sending Meta-characters. Do we need this? */
101 #define min(a,b) ((a)<(b) ? (a) : (b))
102 #define max(a,b) ((a)>(b) ? (a) : (b))
104 /* Nonzero means we must reprint all windows
105 because 1) we received an ExposeWindow event
106 or 2) we received too many ExposeRegion events to record. */
108 static int expose_all_windows
;
110 /* Nonzero means we must reprint all icon windows. */
112 static int expose_all_icons
;
115 /* ExposeRegion events, when received, are copied into this queue
116 for later processing. */
118 static struct event_queue x_expose_queue
;
120 /* ButtonPressed and ButtonReleased events, when received,
121 are copied into this queue for later processing. */
123 struct event_queue x_mouse_queue
;
126 /* Nonzero after BLOCK_INPUT; prevents input events from being
127 processed until later. */
131 #if defined (SIGIO) && defined (FIONREAD)
132 int BLOCK_INPUT_mask
;
135 /* Nonzero if input events came in while x_input_blocked was nonzero.
136 UNBLOCK_INPUT checks for this. */
140 /* Nonzero if in redisplay (); prevents us from calling it recursively */
144 /* The id of a bitmap used for icon windows.
145 One such map is shared by all Emacs icon windows.
146 This is zero if we have not yet had a need to create the bitmap. */
148 static Bitmap icon_bitmap
;
150 /* Font used for text icons. */
152 static FONT_TYPE
*icon_font_info
;
154 /* Stuff for dealing with the main icon title. */
156 extern Lisp_Object Vcommand_line_args
;
157 char *hostname
, *x_id_name
;
158 Lisp_Object invocation_name
;
160 /* This is the X connection that we are using. */
162 Display
*x_current_display
;
164 /* Screen being updated by update_screen. */
165 /* This is set by XTupdate_begin and looked at by all the
166 XT functions. It is zero while not inside an update.
167 In that case, the XT functions assume that `selected_screen'
168 is the screen to apply to. */
170 static struct screen
*updating_screen
;
172 /* The screen (if any) which has the X window that has keyboard focus.
173 Zero if none. This is examined by Ffocus_screen in screen.c. */
174 struct screen
*x_focus_screen
;
176 /* The screen which currently has the visual highlight, and should get
177 keyboard input (other sorts of input have the screen encoded in the
178 event). It points to the X focus screen's selected window's
179 screen. It differs from x_focus_screen when we're using a global
181 static struct screen
*x_highlight_screen
;
183 /* From .Xdefaults, the value of "emacs.WarpMouse". If non-zero,
184 mouse is moved to inside of screen when screen is de-iconified. */
186 static int warp_mouse_on_deiconify
;
188 /* During an update, maximum vpos for ins/del line operations to affect. */
190 static int flexlines
;
192 /* During an update, nonzero if chars output now should be highlighted. */
194 static int highlight
;
196 /* Nominal cursor position -- where to draw output.
197 During an update, these are different from the cursor-box position. */
203 /* `t' if a mouse button is depressed. */
205 extern Lisp_Object Vmouse_depressed
;
207 /* Tells if a window manager is present or not. */
209 extern Lisp_Object Vx_no_window_manager
;
211 /* Timestamp that we requested selection data was made. */
212 extern Time requestor_time
;
214 /* ID of the window requesting selection data. */
215 extern Window requestor_window
;
217 /* Nonzero enables some debugging for the X interface code. */
220 #else /* X10 stuff */
222 /* Bit patterns for the mouse cursor. */
224 short MouseCursor
[] = {
225 0x0000, 0x0008, 0x0018, 0x0038,
226 0x0078, 0x00f8, 0x01f8, 0x03f8,
227 0x07f8, 0x00f8, 0x00d8, 0x0188,
228 0x0180, 0x0300, 0x0300, 0x0000};
230 short MouseMask
[] = {
231 0x000c, 0x001c, 0x003c, 0x007c,
232 0x00fc, 0x01fc, 0x03fc, 0x07fc,
233 0x0ffc, 0x0ffc, 0x01fc, 0x03dc,
234 0x03cc, 0x0780, 0x0780, 0x0300};
236 static short grey_bits
[] = {
237 0x0005, 0x000a, 0x0005, 0x000a};
239 static Pixmap GreyPixmap
= 0;
240 #endif /* X10 stuff */
242 /* From time to time we get info on an Emacs window, here. */
244 static WINDOWINFO_TYPE windowinfo
;
248 extern Display
*XOpenDisplay ();
249 extern Window
XCreateWindow ();
251 extern Cursor
XCreateCursor ();
252 extern FONT_TYPE
*XOpenFont ();
254 static void flashback ();
257 static void dumpqueue ();
261 static int XTcursor_to ();
262 static int XTclear_end_of_line ();
264 /* These hooks are called by update_screen at the beginning and end
265 of a screen update. We record in `updating_screen' the identity
266 of the screen being updated, so that the XT... functions do not
267 need to take a screen as argument. Most of the XT... functions
268 should never be called except during an update, the only exceptions
269 being XTcursor_to, XTwrite_char and XTreassert_line_highlight. */
271 extern int mouse_track_top
, mouse_track_left
, mouse_track_width
;
283 flexlines
= s
->height
;
293 static void x_do_pending_expose ();
301 if (updating_screen
== 0
302 || updating_screen
!= s
)
309 adjust_scrollbars (s
);
310 x_do_pending_expose ();
312 x_display_cursor (s
, 1);
319 /* External interface to control of standout mode.
320 Call this when about to modify line at position VPOS
321 and not change whether it is highlighted. */
323 XTreassert_line_highlight (new, vpos
)
329 /* Call this when about to modify line at position VPOS
330 and change whether it is highlighted. */
333 XTchange_line_highlight (new_highlight
, vpos
, first_unused_hpos
)
334 int new_highlight
, vpos
, first_unused_hpos
;
336 highlight
= new_highlight
;
337 XTcursor_to (vpos
, 0);
338 XTclear_end_of_line (updating_screen
->width
);
341 /* This is used when starting Emacs and when restarting after suspend.
342 When starting Emacs, no X window is mapped. And nothing must be done
343 to Emacs's own window if it is suspended (though that rarely happens). */
346 XTset_terminal_modes ()
350 /* This is called when exiting or suspending Emacs.
351 Exiting will make the X-windows go away, and suspending
352 requires no action. */
355 XTreset_terminal_modes ()
357 /* XTclear_screen (); */
360 /* Set the nominal cursor position of the screen:
361 where display update commands will take effect.
362 This does not affect the place where the cursor-box is displayed. */
365 XTcursor_to (row
, col
)
366 register int row
, col
;
374 if (updating_screen
== 0)
377 x_display_cursor (selected_screen
, 1);
383 /* Display a sequence of N glyphs found at GP.
384 WINDOW is the x-window to output to. LEFT and TOP are starting coords.
385 HL is 1 if this text is highlighted, 2 if the cursor is on it.
387 FONT is the default font to use (for glyphs whose font-code is 0). */
390 dumpglyphs (s
, left
, top
, gp
, n
, hl
, font
)
393 register GLYPH
*gp
; /* Points to first GLYPH. */
394 register int n
; /* Number of glyphs to display. */
399 Window window
= s
->display
.x
->window_desc
;
400 GC drawing_gc
= (hl
== 2 ? s
->display
.x
->cursor_gc
401 : (hl
? s
->display
.x
->reverse_gc
402 : s
->display
.x
->normal_gc
));
404 if (sizeof (GLYPH
) == sizeof (XChar2b
))
405 XDrawImageString16 (x_current_display
, window
, drawing_gc
,
406 left
, top
+ FONT_BASE (font
), (XChar2b
*) gp
, n
);
407 else if (sizeof (GLYPH
) == sizeof (unsigned char))
408 XDrawImageString (x_current_display
, window
, drawing_gc
,
409 left
, top
+ FONT_BASE (font
), (char *) gp
, n
);
411 /* What size of glyph ARE you using? And does X have a function to
418 dumpglyphs (s
, left
, top
, gp
, n
, hl
, font
)
421 register GLYPH
*gp
; /* Points to first GLYPH. */
422 register int n
; /* Number of glyphs to display. */
426 char buf
[s
->width
]; /* Holds characters to be displayed. */
427 register char *cp
; /* Steps through buf[]. */
428 register int tlen
= GLYPH_TABLE_LENGTH
;
429 register Lisp_Object
*tbase
= GLYPH_TABLE_BASE
;
430 Window window
= s
->display
.x
->window_desc
;
431 int cursor_pixel
= s
->display
.x
->cursor_pixel
;
432 int fg_pixel
= s
->display
.x
->foreground_pixel
;
433 int bg_pixel
= s
->display
.x
->background_pixel
;
434 int intborder
= s
->display
.x
->internal_border_width
;
438 /* Get the face-code of the next GLYPH. */
442 while (GLYPH_ALIAS_P (tbase
, tlen
, g
))
443 g
= GLYPH_ALIAS (tbase
, g
);
447 /* Find the run of consecutive glyphs with the same face-code.
448 Extract their character codes into BUF. */
453 while (GLYPH_ALIAS_P (tbase
, tlen
, g
))
454 g
= GLYPH_ALIAS (tbase
, g
);
463 /* LEN gets the length of the run. */
466 /* Now output this run of chars, with the font and pixel values
467 determined by the face code CF. */
471 GC GC_cursor
= s
->display
.x
->cursor_gc
;
472 GC GC_reverse
= s
->display
.x
->reverse_gc
;
473 GC GC_normal
= s
->display
.x
->normal_gc
;
475 XDrawImageString (x_current_display
, window
,
478 : (hl
? GC_reverse
: GC_normal
)),
479 left
, top
+ FONT_BASE (font
), buf
, len
);
481 XText (window
, left
, top
,
486 ? (cursor_pixel
== fg_pixel
? bg_pixel
: fg_pixel
)
487 : hl
? bg_pixel
: fg_pixel
),
488 (hl
== 2 ? cursor_pixel
489 : hl
? fg_pixel
: bg_pixel
));
490 #endif /* HAVE_X11 */
495 if (FACE_IS_FONT (cf
))
496 XDrawImageString (x_current_display
, s
->display
.x
->window_desc
,
498 left
, top
+ FONT_BASE (FACE_FONT (cf
)),
500 else if (FACE_IS_IMAGE (cf
))
501 XCopyPlane (x_current_display
, FACE_IMAGE (cf
),
502 s
->display
.x
->window_desc
,
503 s
->display
.x
->normal_gc
,
505 FACE_IMAGE_WIDTH (cf
),
506 FACE_IMAGE_HEIGHT (cf
), left
, top
);
510 register struct face
*fp
= x_face_table
[cf
];
512 XText (window
, left
, top
,
517 ? (cursor_pixel
== fp
->fg
? fp
->bg
: fp
->fg
)
518 : hl
? fp
->bg
: fp
->fg
),
519 (hl
== 2 ? cursor_pixel
520 : hl
? fp
->fg
: fp
->bg
));
521 #endif /* HAVE_X11 */
523 left
+= len
* FONT_WIDTH (font
);
528 /* Output some text at the nominal screen cursor position,
529 advancing the cursor over the text.
530 Output LEN glyphs at START.
532 `highlight', set up by XTreassert_line_highlight or XTchange_line_highlight,
533 controls the pixel values used for foreground and background. */
536 XTwrite_glyphs (start
, len
)
537 register GLYPH
*start
;
540 register int temp_length
;
550 /* If not within an update,
551 output at the screen's visible cursor. */
552 curs_x
= s
->cursor_x
;
553 curs_y
= s
->cursor_y
;
557 (curs_x
* FONT_WIDTH (s
->display
.x
->font
)
558 + s
->display
.x
->internal_border_width
),
559 (curs_y
* FONT_HEIGHT (s
->display
.x
->font
)
560 + s
->display
.x
->internal_border_width
),
561 start
, len
, highlight
, s
->display
.x
->font
);
563 /* If we drew on top of the cursor, note that it is turned off. */
564 if (curs_y
== s
->phys_cursor_y
565 && curs_x
<= s
->phys_cursor_x
566 && curs_x
+ len
> s
->phys_cursor_x
)
567 s
->phys_cursor_x
= -1;
569 if (updating_screen
== 0)
572 x_display_cursor (s
, 1);
581 /* Erase the current text line from the nominal cursor position (inclusive)
582 to column FIRST_UNUSED (exclusive). The idea is that everything
583 from FIRST_UNUSED onward is already erased. */
586 XTclear_end_of_line (first_unused
)
587 register int first_unused
;
589 struct screen
*s
= updating_screen
;
595 if (curs_y
< 0 || curs_y
>= s
->height
)
597 if (first_unused
<= 0)
600 if (first_unused
>= s
->width
)
601 first_unused
= s
->width
;
605 /* Notice if the cursor will be cleared by this operation. */
606 if (curs_y
== s
->phys_cursor_y
607 && curs_x
<= s
->phys_cursor_x
608 && s
->phys_cursor_x
< first_unused
)
609 s
->phys_cursor_x
= -1;
612 XClearArea (x_current_display
, s
->display
.x
->window_desc
,
613 curs_x
* FONT_WIDTH (s
->display
.x
->font
)
614 + s
->display
.x
->internal_border_width
,
615 curs_y
* FONT_HEIGHT (s
->display
.x
->font
)
616 + s
->display
.x
->internal_border_width
,
617 FONT_WIDTH (s
->display
.x
->font
) * (first_unused
- curs_x
),
618 FONT_HEIGHT (s
->display
.x
->font
), False
);
621 XPixSet (s
->display
.x
->window_desc
,
622 curs_x
* FONT_WIDTH (s
->display
.x
->font
) + s
->display
.x
->internal_border_width
,
623 curs_y
* FONT_HEIGHT (s
->display
.x
->font
) + s
->display
.x
->internal_border_width
,
624 FONT_WIDTH (s
->display
.x
->font
) * (first_unused
- curs_x
),
625 FONT_HEIGHT (s
->display
.x
->font
),
626 s
->display
.x
->background_pixel
);
627 #endif /* HAVE_X11 */
636 struct screen
*s
= updating_screen
;
641 s
->phys_cursor_x
= -1; /* Cursor not visible. */
642 curs_x
= 0; /* Nominal cursor position is top left. */
646 XClear (s
->display
.x
->window_desc
);
654 /* Paint horzontal bars down the screen for a visible bell.
655 Note that this may be way too slow on some machines. */
660 register struct screen_glyphs
*active_screen
= SCREEN_CURRENT_GLYPHS (s
);
664 if (updating_screen
!= 0)
670 for (i
= s
->height
* FONT_HEIGHT (s
->display
.x
->font
) - 10;
672 i
-= 100) /* Should be NO LOWER than 75 for speed reasons. */
673 XFillRectangle (x_current_display
, s
->display
.x
->window_desc
,
674 s
->display
.x
->cursor_gc
,
675 0, i
, s
->width
* FONT_WIDTH (s
->display
.x
->font
)
676 + 2 * s
->display
.x
->internal_border_width
, 25);
679 x
= (s
->width
* FONT_WIDTH (s
->display
.x
->font
)) / 4;
680 y
= (s
->height
* FONT_HEIGHT (s
->display
.x
->font
)) / 4;
681 XFillRectangle (x_current_display
, s
->display
.x
->window_desc
,
682 s
->display
.x
->cursor_gc
,
684 dumpglyphs (s
, (x
+ s
->display
.x
->internal_border_width
),
685 (y
+ s
->display
.x
->internal_border_width
),
686 &active_screen
->glyphs
[(s
->height
/ 4) + 1][(s
->width
/ 4)],
687 1, 0, s
->display
.x
->font
);
690 for (i
= s
->height
* FONT_HEIGHT (s
->display
.x
->font
) - 10;
693 XPixFill (s
->display
.x
->window_desc
, 0, i
,
694 s
->width
* FONT_WIDTH (s
->display
.x
->font
)
695 + 2 * s
->display
.x
->internal_border_width
, 10,
696 WHITE_PIX_DEFAULT
, ClipModeClipped
, GXinvert
, AllPlanes
);
703 /* Flip background and forground colors of the screen. */
710 unsigned long pix_temp
;
712 x_display_cursor (s
, 0);
713 XClearWindow (x_current_display
, s
->display
.x
->window_desc
);
714 temp
= s
->display
.x
->normal_gc
;
715 s
->display
.x
->normal_gc
= s
->display
.x
->reverse_gc
;
716 s
->display
.x
->reverse_gc
= temp
;
717 pix_temp
= s
->display
.x
->foreground_pixel
;
718 s
->display
.x
->foreground_pixel
= s
->display
.x
->background_pixel
;
719 s
->display
.x
->background_pixel
= pix_temp
;
721 XSetWindowBackground (x_current_display
, s
->display
.x
->window_desc
,
722 s
->display
.x
->background_pixel
);
723 if (s
->display
.x
->background_pixel
== s
->display
.x
->cursor_pixel
)
725 s
->display
.x
->cursor_pixel
= s
->display
.x
->foreground_pixel
;
726 XSetBackground (x_current_display
, s
->display
.x
->cursor_gc
,
727 s
->display
.x
->cursor_pixel
);
728 XSetForeground (x_current_display
, s
->display
.x
->cursor_gc
,
729 s
->display
.x
->background_pixel
);
735 /* Make audible bell. */
738 #define XRINGBELL XBell(x_current_display, 0)
740 #define XRINGBELL XFeep(0);
747 XTflash (selected_screen
);
750 x_invert_screen (selected_screen
);
751 x_invert_screen (selected_screen
);
762 /* Insert and delete character are not supposed to be used
763 because we are supposed to turn off the feature of using them. */
766 XTinsert_glyphs (start
, len
)
767 register char *start
;
780 /* Specify how many text lines, from the top of the window,
781 should be affected by insert-lines and delete-lines operations.
782 This, and those operations, are used only within an update
783 that is bounded by calls to XTupdate_begin and XTupdate_end. */
786 XTset_terminal_window (n
)
789 if (updating_screen
== 0)
792 if ((n
<= 0) || (n
> updating_screen
->height
))
793 flexlines
= updating_screen
->height
;
798 /* Perform an insert-lines operation, inserting N lines
799 at a vertical position curs_y. */
805 register int topregion
, bottomregion
;
806 register int length
, newtop
, mask
;
807 register struct screen
*s
= updating_screen
;
808 int intborder
= s
->display
.x
->internal_border_width
;
810 if (curs_y
>= flexlines
)
814 bottomregion
= flexlines
- (n
+ 1);
815 newtop
= topregion
+ n
;
816 length
= (bottomregion
- topregion
) + 1;
822 if ((length
> 0) && (newtop
<= flexlines
))
825 XCopyArea (x_current_display
, s
->display
.x
->window_desc
,
826 s
->display
.x
->window_desc
, s
->display
.x
->normal_gc
,
827 intborder
, topregion
* FONT_HEIGHT (s
->display
.x
->font
) + intborder
,
828 s
->width
* FONT_WIDTH (s
->display
.x
->font
),
829 length
* FONT_HEIGHT (s
->display
.x
->font
), intborder
,
830 newtop
* FONT_HEIGHT (s
->display
.x
->font
) + intborder
);
832 XMoveArea (s
->display
.x
->window_desc
,
833 intborder
, topregion
* FONT_HEIGHT (s
->display
.x
->font
) + intborder
,
834 intborder
, newtop
* FONT_HEIGHT (s
->display
.x
->font
) + intborder
,
835 s
->width
* FONT_WIDTH (s
->display
.x
->font
),
836 length
* FONT_HEIGHT (s
->display
.x
->font
));
837 /* Now we must process any ExposeRegion events that occur
838 if the area being copied from is obscured.
839 We can't let it wait because further i/d operations
840 may want to copy this area to another area. */
842 #endif /* HAVE_X11 */
845 newtop
= min (newtop
, (flexlines
- 1));
846 length
= newtop
- topregion
;
850 XClearArea (x_current_display
, s
->display
.x
->window_desc
, intborder
,
851 topregion
* FONT_HEIGHT (s
->display
.x
->font
) + intborder
,
852 s
->width
* FONT_WIDTH (s
->display
.x
->font
),
853 n
* FONT_HEIGHT (s
->display
.x
->font
), False
);
855 XPixSet (s
->display
.x
->window_desc
,
857 topregion
* FONT_HEIGHT (s
->display
.x
->font
) + intborder
,
858 s
->width
* FONT_WIDTH (s
->display
.x
->font
),
859 n
* FONT_HEIGHT (s
->display
.x
->font
),
860 s
->display
.x
->background_pixel
);
861 #endif /* HAVE_X11 */
865 /* Perform a delete-lines operation, deleting N lines
866 at a vertical position curs_y. */
873 register struct screen
*s
= updating_screen
;
874 int intborder
= s
->display
.x
->internal_border_width
;
876 if (curs_y
>= flexlines
)
883 if ((curs_y
+ n
) >= flexlines
)
885 if (flexlines
>= (curs_y
+ 1))
888 XClearArea (x_current_display
, s
->display
.x
->window_desc
, intborder
,
889 curs_y
* FONT_HEIGHT (s
->display
.x
->font
) + intborder
,
890 s
->width
* FONT_WIDTH (s
->display
.x
->font
),
891 (flexlines
- curs_y
) * FONT_HEIGHT (s
->display
.x
->font
), False
);
893 XPixSet (s
->display
.x
->window_desc
,
894 intborder
, curs_y
* FONT_HEIGHT (s
->display
.x
->font
) + intborder
,
895 s
->width
* FONT_WIDTH (s
->display
.x
->font
),
896 (flexlines
- curs_y
) * FONT_HEIGHT (s
->display
.x
->font
),
897 s
->display
.x
->background_pixel
);
898 #endif /* HAVE_X11 */
904 XCopyArea (x_current_display
, s
->display
.x
->window_desc
,
905 s
->display
.x
->window_desc
, s
->display
.x
->normal_gc
,
907 (curs_y
+ n
) * FONT_HEIGHT (s
->display
.x
->font
) + intborder
,
908 s
->width
* FONT_WIDTH (s
->display
.x
->font
),
909 (flexlines
- (curs_y
+ n
)) * FONT_HEIGHT (s
->display
.x
->font
),
910 intborder
, curs_y
* FONT_HEIGHT (s
->display
.x
->font
) + intborder
);
911 XClearArea (x_current_display
, s
->display
.x
->window_desc
,
913 (flexlines
- n
) * FONT_HEIGHT (s
->display
.x
->font
) + intborder
,
914 s
->width
* FONT_WIDTH (s
->display
.x
->font
),
915 n
* FONT_HEIGHT (s
->display
.x
->font
), False
);
917 XMoveArea (s
->display
.x
->window_desc
,
919 (curs_y
+ n
) * FONT_HEIGHT (s
->display
.x
->font
) + intborder
,
920 intborder
, curs_y
* FONT_HEIGHT (s
->display
.x
->font
) + intborder
,
921 s
->width
* FONT_WIDTH (s
->display
.x
->font
),
922 (flexlines
- (curs_y
+ n
)) * FONT_HEIGHT (s
->display
.x
->font
));
923 /* Now we must process any ExposeRegion events that occur
924 if the area being copied from is obscured.
925 We can't let it wait because further i/d operations
926 may want to copy this area to another area. */
928 XPixSet (s
->display
.x
->window_desc
, intborder
,
929 (flexlines
- n
) * FONT_HEIGHT (s
->display
.x
->font
) + intborder
,
930 s
->width
* FONT_WIDTH (s
->display
.x
->font
),
931 n
* FONT_HEIGHT (s
->display
.x
->font
), s
->display
.x
->background_pixel
);
932 #endif /* HAVE_X11 */
936 /* Perform an insert-lines or delete-lines operation,
937 inserting N lines or deleting -N lines at vertical position VPOS. */
939 XTins_del_lines (vpos
, n
)
942 if (updating_screen
== 0)
945 /* Hide the cursor. */
946 x_display_cursor (updating_screen
, 0);
948 XTcursor_to (vpos
, 0);
959 static void clear_cursor ();
961 /* Output into a rectangle of an X-window (for screen S)
962 the characters in s->phys_lines that overlap that rectangle.
963 TOP and LEFT are the position of the upper left corner of the rectangle.
964 ROWS and COLS are the size of the rectangle. */
967 dumprectangle (s
, left
, top
, cols
, rows
)
969 register int left
, top
, cols
, rows
;
971 register struct screen_glyphs
*active_screen
= SCREEN_CURRENT_GLYPHS (s
);
972 int cursor_cleared
= 0;
976 if (SCREEN_GARBAGED_P (s
))
979 top
-= s
->display
.x
->internal_border_width
;
980 left
-= s
->display
.x
->internal_border_width
;
982 /* Express rectangle as four edges, instead of position-and-size. */
986 #ifndef HAVE_X11 /* Window manger does this for X11. */
987 /* If the rectangle includes any of the internal border area,
988 redisplay the border emphasis. */
989 if (top
< 0 || left
< 0
990 || bottom
> s
->height
* FONT_HEIGHT (s
->display
.x
->font
)
991 || right
> s
->width
* FONT_WIDTH (s
->display
.x
->font
))
993 #endif /* HAVE_X11 */
995 /* Convert rectangle edges in pixels to edges in chars.
996 Round down for left and top, up for right and bottom. */
997 top
/= FONT_HEIGHT (s
->display
.x
->font
);
998 left
/= FONT_WIDTH (s
->display
.x
->font
);
999 bottom
+= (FONT_HEIGHT (s
->display
.x
->font
) - 1);
1000 right
+= (FONT_WIDTH (s
->display
.x
->font
) - 1);
1001 bottom
/= FONT_HEIGHT (s
->display
.x
->font
);
1002 right
/= FONT_WIDTH (s
->display
.x
->font
);
1004 /* Clip the rectangle to what can be visible. */
1009 if (right
> s
->width
)
1011 if (bottom
> s
->height
)
1014 /* Get size in chars of the rectangle. */
1015 cols
= right
- left
;
1016 rows
= bottom
- top
;
1018 /* If rectangle has zero area, return. */
1019 if (rows
<= 0) return;
1020 if (cols
<= 0) return;
1022 /* Turn off the cursor if it is in the rectangle.
1023 We will turn it back on afterward. */
1024 if ((s
->phys_cursor_x
>= left
) && (s
->phys_cursor_x
< right
)
1025 && (s
->phys_cursor_y
>= top
) && (s
->phys_cursor_y
< bottom
))
1031 /* Display the text in the rectangle, one text line at a time. */
1033 for (y
= top
; y
< bottom
; y
++)
1035 GLYPH
*line
= &active_screen
->glyphs
[y
][left
];
1037 if (! active_screen
->enable
[y
] || left
> active_screen
->used
[y
])
1041 (left
* FONT_WIDTH (s
->display
.x
->font
)
1042 + s
->display
.x
->internal_border_width
),
1043 (y
* FONT_HEIGHT (s
->display
.x
->font
)
1044 + s
->display
.x
->internal_border_width
),
1045 line
, min (cols
, active_screen
->used
[y
] - left
),
1046 active_screen
->highlight
[y
], s
->display
.x
->font
);
1049 /* Turn the cursor on if we turned it off. */
1052 x_display_cursor (s
, 1);
1056 /* Process all queued ExposeRegion events. */
1062 XExposeRegionEvent r
;
1064 while (dequeue_event (&r
, &x_expose_queue
))
1066 struct screen
*s
= x_window_to_screen (r
.window
);
1067 if (s
->display
.x
->icon_desc
== r
.window
)
1070 dumprectangle (s
, r
.x
, r
.y
, r
.width
, r
.height
);
1076 /* Process all expose events that are pending.
1077 Redraws the cursor if necessary on any screen that
1078 is not in the process of being updated with update_screen. */
1081 x_do_pending_expose ()
1085 Lisp_Object tail
, screen
;
1087 if (expose_all_windows
)
1089 expose_all_windows
= 0;
1090 for (tail
= Vscreen_list
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
1092 register int temp_width
, temp_height
;
1095 screen
= XCONS (tail
)->car
;
1096 if (XTYPE (screen
) != Lisp_Screen
)
1098 s
= XSCREEN (screen
);
1099 if (! SCREEN_IS_X (s
))
1103 if (!s
->display
.x
->needs_exposure
)
1106 intborder
= s
->display
.x
->internal_border_width
;
1109 XGetWindowInfo (s
->display
.x
->window_desc
, &windowinfo
);
1110 temp_width
= ((windowinfo
.width
- 2 * intborder
1111 - s
->display
.x
->v_scrollbar_width
)
1112 / FONT_WIDTH (s
->display
.x
->font
));
1113 temp_height
= ((windowinfo
.height
- 2 * intborder
1114 - s
->display
.x
->h_scrollbar_height
)
1115 / FONT_HEIGHT (s
->display
.x
->font
));
1116 if (temp_width
!= s
->width
|| temp_height
!= s
->height
)
1118 change_screen_size (s
, max (1, temp_height
),
1119 max (1, temp_width
), 0);
1120 x_resize_scrollbars (s
);
1122 s
->display
.x
->left_pos
= windowinfo
.x
;
1123 s
->display
.x
->top_pos
= windowinfo
.y
;
1124 dumprectangle (s
, 0, 0, PIXEL_WIDTH (s
), PIXEL_HEIGHT (s
));
1128 s
->display
.x
->needs_exposure
= 0;
1129 if (updating_screen
!= s
)
1130 x_display_cursor (s
, 1);
1135 /* Handle any individual-rectangle expose events queued
1136 for various windows. */
1146 screen_highlight (screen
)
1147 struct screen
*screen
;
1149 if (! EQ (Vx_no_window_manager
, Qnil
))
1150 XSetWindowBorder (x_current_display
, screen
->display
.x
->window_desc
,
1151 screen
->display
.x
->border_pixel
);
1152 x_display_cursor (screen
, 1);
1156 screen_unhighlight (screen
)
1157 struct screen
*screen
;
1159 if (! EQ (Vx_no_window_manager
, Qnil
))
1160 XSetWindowBorderPixmap (x_current_display
, screen
->display
.x
->window_desc
,
1161 screen
->display
.x
->border_tile
);
1162 x_display_cursor (screen
, 1);
1165 /* Dump the border-emphasis of screen S.
1166 If S is selected, this is a lining of the same color as the border,
1167 just within the border, occupying a portion of the internal border.
1168 If S is not selected, it is background in the same place.
1169 If ALWAYS is 0, don't bother explicitly drawing if it's background.
1171 ALWAYS = 1 is used when a screen becomes selected or deselected.
1172 In that case, we also turn the cursor off and on again
1173 so it will appear in the proper shape (solid if selected; else hollow.) */
1176 dumpborder (s
, always
)
1180 int thickness
= s
->display
.x
->internal_border_width
/ 2;
1181 int width
= PIXEL_WIDTH (s
);
1182 int height
= PIXEL_HEIGHT (s
);
1185 if (s
!= selected_screen
)
1190 pixel
= s
->display
.x
->background_pixel
;
1194 pixel
= s
->display
.x
->border_pixel
;
1197 XPixSet (s
->display
.x
->window_desc
, 0, 0, width
, thickness
, pixel
);
1198 XPixSet (s
->display
.x
->window_desc
, 0, 0, thickness
, height
, pixel
);
1199 XPixSet (s
->display
.x
->window_desc
, 0, height
- thickness
, width
,
1201 XPixSet (s
->display
.x
->window_desc
, width
- thickness
, 0, thickness
,
1205 x_display_cursor (s
, 1);
1209 static void XTscreen_rehighlight ();
1211 /* The focus has changed. Update the screens as necessary to reflect
1212 the new situation. Note that we can't change the selected screen
1213 here, because the lisp code we are interrupting might become confused.
1214 Each event gets marked with the screen in which it occured, so the
1215 lisp code can tell when the switch took place by examining the events. */
1218 x_new_focus_screen (screen
)
1219 struct screen
*screen
;
1221 struct screen
*old_focus
= x_focus_screen
;
1222 int events_enqueued
= 0;
1224 if (screen
!= x_focus_screen
)
1226 /* Set this before calling other routines, so that they see
1227 the correct value of x_focus_screen. */
1228 x_focus_screen
= screen
;
1230 if (old_focus
&& old_focus
->auto_lower
)
1231 x_lower_screen (old_focus
);
1234 selected_screen
= screen
;
1235 XSET (XWINDOW (selected_screen
->selected_window
)->screen
,
1236 Lisp_Screen
, selected_screen
);
1237 Fselect_window (selected_screen
->selected_window
);
1238 choose_minibuf_screen ();
1241 if (x_focus_screen
&& x_focus_screen
->auto_raise
)
1242 x_raise_screen (x_focus_screen
);
1245 XTscreen_rehighlight ();
1249 /* The focus has changed, or we have make a screen's selected window
1250 point to a window on a different screen (this happens with global
1251 minibuffer screens). Shift the highlight as appropriate. */
1253 XTscreen_rehighlight ()
1255 struct screen
*old_highlight
= x_highlight_screen
;
1259 x_highlight_screen
= XSCREEN (SCREEN_FOCUS_SCREEN (x_focus_screen
));
1260 if (x_highlight_screen
->display
.nothing
== 0)
1261 XSET (SCREEN_FOCUS_SCREEN (x_focus_screen
), Lisp_Screen
,
1262 (x_highlight_screen
= x_focus_screen
));
1265 x_highlight_screen
= 0;
1267 if (x_highlight_screen
!= old_highlight
)
1270 screen_unhighlight (old_highlight
);
1271 if (x_highlight_screen
)
1272 screen_highlight (x_highlight_screen
);
1283 /* Position of the mouse in characters */
1284 unsigned int x_mouse_x
, x_mouse_y
;
1286 /* Offset in buffer of character under the pointer, or 0. */
1287 extern int mouse_buffer_offset
;
1289 extern int buffer_posn_from_coords ();
1291 /* Symbols from xfns.c to denote the different parts of a window. */
1292 extern Lisp_Object Qmodeline_part
, Qtext_part
;
1295 /* Set *RESULT to an emacs input_event corresponding to MOTION_EVENT.
1296 S is the screen in which the event occurred.
1298 WINDOW_TYPE says whether the event happened in a scrollbar window
1299 or a text window, affecting the format of the event created.
1301 PART specifies which part of the scrollbar the event happened in,
1302 if WINDOW_TYPE == scrollbar_window.
1304 If the mouse is over the same character as the last time we checked,
1305 don't return an event; set result->kind to no_event. */
1308 notice_mouse_movement (result
, motion_event
, s
, window_type
, part
)
1309 struct input_event
*result
;
1310 XMotionEvent motion_event
;
1315 int x
, y
, root_x
, root_y
, pix_x
, pix_y
;
1316 unsigned int keys_and_buttons
;
1317 Window w
, root_window
;
1319 /* Unless we decide otherwise below, return a non-event. */
1320 result
->kind
= no_event
;
1322 if (XQueryPointer (x_current_display
,
1323 s
->display
.x
->window_desc
,
1325 &root_x
, &root_y
, &pix_x
, &pix_y
,
1331 if (w
== None
) /* Mouse no longer in window. */
1335 pixel_to_glyph_translation (s
, pix_x
, pix_y
, &x
, &y
);
1336 if (x
== x_mouse_x
&& y
== x_mouse_y
)
1342 /* What sort of window are we in now? */
1343 if (window_type
== text_window
) /* Text part */
1347 Vmouse_window
= window_from_coordinates (s
, x
, y
, &modeline_p
);
1349 if (XTYPE (Vmouse_window
) == Lisp_Window
)
1351 = buffer_posn_from_coords (XWINDOW (Vmouse_window
), x
, y
);
1353 mouse_buffer_offset
= 0;
1355 if (EQ (Vmouse_window
, Qnil
))
1356 Vmouse_screen_part
= Qnil
;
1357 else if (modeline_p
)
1358 Vmouse_screen_part
= Qmodeline_part
;
1360 Vmouse_screen_part
= Qtext_part
;
1362 result
->kind
= window_sys_event
;
1363 result
->code
= Qmouse_moved
;
1367 else if (window_type
== scrollbar_window
) /* Scrollbar */
1369 Vmouse_window
= s
->selected_window
;
1370 mouse_buffer_offset
= 0;
1371 Vmouse_screen_part
= part
;
1373 result
->kind
= window_sys_event
;
1374 result
->code
= Qmouse_moved
;
1384 /* Mouse clicks and mouse movement. Rah. */
1387 /* Given a pixel position (PIX_X, PIX_Y) on the screen S, return
1388 glyph co-ordinates in (*X, *Y). Set *BOUNDS to the rectangle
1389 that the glyph at X, Y occupies, if BOUNDS != 0. */
1391 pixel_to_glyph_coords (s
, pix_x
, pix_y
, x
, y
, bounds
)
1393 register unsigned int pix_x
, pix_y
;
1394 register int *x
, *y
;
1397 int ibw
= s
->display
.x
->internal_border_width
;
1399 FONT_TYPE
*font
= s
->display
.x
->font
;
1401 width
= FONT_WIDTH (font
);
1402 height
= FONT_HEIGHT (font
);
1404 /* What line is it on? */
1407 else if (pix_y
> s
->display
.x
->pixel_height
- ibw
)
1408 *y
= SCREEN_HEIGHT (s
) - 1;
1410 *y
= (pix_y
- ibw
) / height
;
1412 /* And what column? */
1415 else if (pix_x
> s
->display
.x
->pixel_width
- ibw
)
1416 *x
= SCREEN_WIDTH (s
) - 1;
1418 *x
= (pix_x
- ibw
) / width
;
1422 bounds
->width
= width
;
1423 bounds
->height
= height
;
1424 bounds
->x
= ibw
+ (*x
* width
);
1425 bounds
->y
= ibw
+ (*y
* height
);
1429 /* Any buttons grabbed. */
1430 unsigned int x_mouse_grabbed
;
1432 /* Convert a set of X modifier bits to the proper form for a
1433 struct input_event modifiers value. */
1436 x_convert_modifiers (state
)
1439 return ( ((state
& (ShiftMask
| LockMask
)) ? shift_modifier
: 0)
1440 | ((state
& ControlMask
) ? ctrl_modifier
: 0)
1441 | ((state
& Mod1Mask
) ? meta_modifier
: 0));
1444 extern struct screen
*x_window_to_scrollbar ();
1445 extern Lisp_Object Vmouse_event
;
1447 /* Prepare a mouse-event in *RESULT for placement in the input queue.
1449 If the event is a button press, then note that we have grabbed
1452 If PART and PREFIX are 0, then the event occurred in the text part;
1453 otherwise it happened in a scrollbar. */
1456 construct_mouse_click (result
, event
, s
, part
, prefix
)
1457 struct input_event
*result
;
1458 XButtonEvent
*event
;
1463 /* Initialize those fields text and scrollbar clicks hold in common.
1464 Make the event type no_event; we'll change that when we decide
1466 result
->kind
= no_event
;
1467 XSET (result
->code
, Lisp_Int
, event
->button
);
1468 result
->timestamp
= event
->time
;
1469 result
->modifiers
= (x_convert_modifiers (event
->state
)
1470 | (event
->type
== ButtonRelease
? up_modifier
: 0));
1472 /* Notice if the mouse is still grabbed. */
1473 if (event
->type
== ButtonPress
)
1475 if (! x_mouse_grabbed
)
1476 Vmouse_depressed
= Qt
;
1477 x_mouse_grabbed
|= (1 << event
->button
);
1479 else if (event
->type
== ButtonRelease
)
1481 x_mouse_grabbed
&= ~(1 << event
->button
);
1482 if (!x_mouse_grabbed
)
1483 Vmouse_depressed
= Qnil
;
1486 if (part
) /* Scrollbar event */
1490 pos
= event
->y
- (s
->display
.x
->v_scrollbar_width
- 2);
1491 XSET (x_mouse_x
, Lisp_Int
, pos
);
1492 len
= ((FONT_HEIGHT (s
->display
.x
->font
) * s
->height
)
1493 + s
->display
.x
->internal_border_width
1494 - (2 * (s
->display
.x
->v_scrollbar_width
- 2)));
1495 XSET (x_mouse_y
, Lisp_Int
, len
);
1497 result
->kind
= scrollbar_click
;
1498 result
->part
= part
;
1499 XSET (result
->x
, Lisp_Int
, (s
->display
.x
->top_pos
- event
->y
));
1500 XSET (result
->y
, Lisp_Int
, s
->display
.x
->pixel_height
);
1503 else /* Text Window Event */
1507 pixel_to_glyph_coords (s
, event
->x
, event
->y
, &column
, &row
, NULL
);
1508 result
->kind
= mouse_click
;
1516 /* Mouse movement. Rah.
1518 In order to avoid asking for motion events and then throwing most
1519 of them away or busy-polling the server for mouse positions, we ask
1520 the server for pointer motion hints. This means that we get only
1521 one event per group of mouse movements. "Groups" are delimited by
1522 other kinds of events (focus changes and button clicks, for
1523 example), or by XQueryPointer calls; when one of these happens, we
1524 get another MotionNotify event the next time the mouse moves. This
1525 is at least as efficient than getting motion events when mouse
1526 tracking is on, and I suspect only negligibly worse when tracking
1529 The silly O'Reilly & Associates Nutshell guides barely document
1530 pointer motion hints at all (I think you have to infer how they
1531 work from an example), and the description of XQueryPointer doesn't
1532 mention that calling it causes you to get another motion hint from
1533 the server, which is very important. */
1535 /* Where the mouse was last time we reported a mouse event. */
1536 static SCREEN_PTR last_mouse_screen
;
1537 static XRectangle last_mouse_glyph
;
1539 /* Function to report a mouse movement to the mainstream Emacs code.
1540 The input handler calls this.
1542 We have received a mouse movement event, which is given in *event.
1543 If the mouse is over a different glyph than it was last time, tell
1544 the mainstream emacs code by setting mouse_moved. If not, ask for
1545 another motion event, so we can check again the next time it moves. */
1547 note_mouse_position (screen
, event
)
1549 XMotionEvent
*event
;
1552 /* Has the mouse moved off the glyph it was on at the last sighting? */
1553 if (event
->x
< last_mouse_glyph
.x
1554 || event
->x
>= last_mouse_glyph
.x
+ last_mouse_glyph
.width
1555 || event
->y
< last_mouse_glyph
.y
1556 || event
->y
>= last_mouse_glyph
.y
+ last_mouse_glyph
.height
)
1560 /* It's on the same glyph. Call XQueryPointer so we'll get an
1561 event the next time the mouse moves and we can see if it's
1562 *still* on the same glyph. */
1565 XQueryPointer (event
->display
, event
->window
,
1566 (Window
*) &dummy
, (Window
*) &dummy
,
1567 &dummy
, &dummy
, &dummy
, &dummy
,
1568 (unsigned int *) &dummy
);
1572 /* Return the current position of the mouse.
1574 This clears the mouse_moved flag, so we can wait for the next mouse
1575 position. This also calls XQueryPointer, which will cause the
1576 server to give us another MotionNotify when the mouse moves again.
1580 XTmouse_position (s
, x
, y
, time
)
1586 Display
*d
= x_current_display
;
1587 Window guess
, root
, child
;
1591 /* I would like to have an X function that just told me the
1592 innermost window containing the mouse.
1594 /* There doesn't seem to be any way to just get the innermost window
1595 containing the pointer, no matter what X screen it's on; you have
1596 to guess a window, and then X will tell you which one of that
1597 window's children it's in. If the pointer isn't in any of that
1598 window's children, it gives you a root window that contains it.
1600 So we start with the selected screen's window and chase down
1601 branches under the guidance of XQueryPointer until we hit a leaf
1602 (all of the Emacs windows we care about are leaf windows). If at
1603 any time XQueryPointer returns false, that means that the current
1604 window does not contain the pointer any more (perhaps it moved),
1605 so we start with the root window XQueryPointer has given us and
1608 guess
= selected_screen
->display
.x
->window_desc
;
1610 if (XQueryPointer (d
, guess
, &root
, &child
,
1611 &dummy
, &dummy
, &ix
, &iy
, (unsigned int *) &dummy
))
1614 /* Guess is a leaf window, and it contains the pointer. */
1620 /* When XQueryPointer returns False, the pointer isn't in guess
1621 anymore, but root is the root window of the screen we should
1625 *s
= last_mouse_screen
= x_window_to_screen (guess
);
1630 pixel_to_glyph_coords (*s
, ix
, iy
, &ix
, &iy
, &last_mouse_glyph
);
1631 XSET (*x
, Lisp_Int
, ix
);
1632 XSET (*y
, Lisp_Int
, iy
);
1637 /* I don't know how to find the time for the last movement; it seems
1638 like XQueryPointer ought to return it, but it doesn't. */
1645 static char *events
[] =
1685 #define XEvent XKeyPressedEvent
1686 #endif /* HAVE_X11 */
1688 /* Timestamp of enter window event. This is only used by XTread_socket,
1689 but we have to put it out here, since static variables within functions
1690 sometimes don't work. */
1691 static Time enter_timestamp
;
1693 /* Communication with window managers. */
1694 Atom Xatom_wm_protocols
;
1696 /* Kinds of protocol things we may receive. */
1697 Atom Xatom_wm_take_focus
;
1698 Atom Xatom_wm_save_yourself
;
1699 Atom Xatom_wm_delete_window
;
1701 /* Other WM communication */
1702 Atom Xatom_wm_configure_denied
; /* When our config request is denied */
1703 Atom Xatom_wm_window_moved
; /* When the WM moves us. */
1705 /* Read events coming from the X server.
1706 This routine is called by the SIGIO handler.
1707 We return as soon as there are no more events to be read.
1709 Events representing keys are stored in buffer BUFP,
1710 which can hold up to NUMCHARS characters.
1711 We return the number of characters stored into the buffer,
1712 thus pretending to be `read'.
1714 WAITP is nonzero if we should block until input arrives.
1715 EXPECTED is nonzero if the caller knows input is available. */
1718 XTread_socket (sd
, bufp
, numchars
, waitp
, expected
)
1720 register struct input_event
*bufp
;
1721 register int numchars
;
1728 int items_pending
; /* How many items are in the X queue. */
1735 if (x_input_blocked
)
1737 x_pending_input
= 1;
1741 x_pending_input
= 0;
1745 abort (); /* Don't think this happens. */
1748 /* If available, Xlib uses FIOSNBIO to make the socket
1749 non-blocking, and then looks for EWOULDBLOCK. If O_NDELAY is set,
1750 FIOSNBIO is ignored, and instead of signalling EWOULDBLOCK,
1751 a read returns 0, which Xlib interprets as equivalent to EPIPE. */
1752 fcntl (fileno (stdin
), F_SETFL
, 0);
1757 if (! (fcntl (fileno (stdin
), F_GETFL
, 0) & O_NDELAY
))
1759 extern int read_alarm_should_throw
;
1760 read_alarm_should_throw
= 1;
1761 XPeekEvent (XDISPLAY
&event
);
1762 read_alarm_should_throw
= 0;
1767 while (XStuffPending () != 0)
1769 XNextEvent (XDISPLAY
&event
);
1777 if (event
.xclient
.message_type
== Xatom_wm_protocols
1778 && event
.xclient
.format
== 32)
1780 if (event
.xclient
.data
.l
[0] == Xatom_wm_take_focus
)
1782 s
= x_window_to_screen (event
.xclient
.window
);
1784 x_focus_on_screen (s
);
1785 /* Not certain about handling scrollbars here */
1787 else if (event
.xclient
.data
.l
[0] == Xatom_wm_save_yourself
)
1789 /* Save state modify the WM_COMMAND property to
1790 something which can reinstate us. This notifies
1791 the session manager, who's looking for such a
1792 PropertyNotify. Can restart processing when
1793 a keyboard or mouse event arrives. */
1798 else if (event
.xclient
.data
.l
[0] == Xatom_wm_delete_window
)
1800 struct screen
*s
= x_window_to_screen (event
.xclient
.window
);
1808 else if (event
.xclient
.message_type
== Xatom_wm_configure_denied
)
1811 else if (event
.xclient
.message_type
== Xatom_wm_window_moved
)
1815 new_x
= event
.xclient
.data
.s
[0];
1816 new_y
= event
.xclient
.data
.s
[1];
1821 case SelectionClear
: /* Someone has grabbed ownership. */
1822 x_disown_selection (event
.xselectionclear
.window
,
1823 event
.xselectionclear
.selection
,
1824 event
.xselectionclear
.time
);
1827 case SelectionRequest
: /* Someone wants our selection. */
1828 x_answer_selection_request (event
);
1831 case PropertyNotify
:
1832 /* If we were to do this synchronously, there'd be no worry
1833 about re-selecting. */
1834 x_send_incremental (event
);
1838 s
= x_window_to_screen (event
.xexpose
.window
);
1841 if (s
->visible
== 0)
1845 SET_SCREEN_GARBAGED (s
);
1848 dumprectangle (x_window_to_screen (event
.xexpose
.window
),
1849 event
.xexpose
.x
, event
.xexpose
.y
,
1850 event
.xexpose
.width
, event
.xexpose
.height
);
1854 case GraphicsExpose
: /* This occurs when an XCopyArea's
1855 source area was obscured or not
1857 dumprectangle (x_window_to_screen (event
.xgraphicsexpose
.drawable
),
1858 event
.xgraphicsexpose
.x
, event
.xgraphicsexpose
.y
,
1859 event
.xgraphicsexpose
.width
,
1860 event
.xgraphicsexpose
.height
);
1863 case NoExpose
: /* This occurs when an XCopyArea's
1864 source area was completely
1867 #else /* not HAVE_X11 */
1869 if (event
.subwindow
!= 0)
1870 break; /* duplicate event */
1871 s
= x_window_to_screen (event
.window
);
1872 if (event
.window
== s
->display
.x
->icon_desc
)
1877 if (event
.window
== s
->display
.x
->window_desc
)
1879 /* Say must check all windows' needs_exposure flags. */
1880 expose_all_windows
= 1;
1881 s
->display
.x
->needs_exposure
= 1;
1887 if (event
.subwindow
!= 0)
1888 break; /* duplicate event */
1889 s
= x_window_to_screen (event
.window
);
1890 if (event
.window
== s
->display
.x
->icon_desc
)
1895 /* If window already needs full redraw, ignore this rectangle. */
1896 if (expose_all_windows
&& s
->display
.x
->needs_exposure
)
1898 /* Put the event on the queue of rectangles to redraw. */
1899 if (enqueue_event (&event
, &x_expose_queue
))
1900 /* If it is full, we can't record the rectangle,
1901 so redraw this entire window. */
1903 /* Say must check all windows' needs_exposure flags. */
1904 expose_all_windows
= 1;
1905 s
->display
.x
->needs_exposure
= 1;
1910 /* This should happen only when we are expecting it,
1911 in x_read_exposes. */
1913 #endif /* not HAVE_X11 */
1920 s
= x_window_to_screen (event
.xunmap
.window
);
1921 if (s
) /* S may no longer exist if
1922 the screen was deleted. */
1924 /* While a screen is unmapped, display generation is
1925 disabled; you don't want to spend time updating a
1926 display that won't ever be seen. */
1928 x_mouse_x
= x_mouse_y
= -1;
1934 s
= x_window_to_screen (event
.xmap
.window
);
1940 /* wait_reading_process_input will notice this and update
1941 the screen's display structures. */
1942 SET_SCREEN_GARBAGED (s
);
1946 /* Turn off processing if we become fully obscured. */
1947 case VisibilityNotify
:
1952 s
= x_window_to_screen (event
.window
);
1953 if (event
.window
== s
->display
.x
->icon_desc
)
1955 if (event
.window
== s
->display
.x
->window_desc
)
1958 #endif /* HAVE_X11 */
1962 s
= x_window_to_screen (event
.xkey
.window
);
1966 XComposeStatus status
;
1967 char copy_buffer
[80];
1968 int modifiers
= event
.xkey
.state
;
1970 /* Some keyboards generate different characters
1971 depending on the state of the meta key, in an attempt
1972 to support non-English typists. It would be nice to
1973 keep this functionality somehow, but for now, we will
1974 just clear the meta-key flag to get the 'pure' character. */
1975 event
.xkey
.state
&= ~Mod1Mask
;
1977 /* This will have to go some day... */
1978 nbytes
= XLookupString (&event
.xkey
,
1984 /* Strip off the vendor-specific keysym bit, and take a shot
1985 at recognizing the codes. HP servers have extra keysyms
1986 that fit into the MiscFunctionKey category. */
1991 if (IsCursorKey (keysym
) /* 0xff50 <= x < 0xff60 */
1992 || IsMiscFunctionKey (keysym
) /* 0xff60 <= x < 0xff80 */
1993 || IsKeypadKey (keysym
) /* 0xff80 <= x < 0xffbe */
1994 || IsFunctionKey (keysym
)) /* 0xffbe <= x < 0xffe1 */
1996 bufp
->kind
= non_ascii_keystroke
;
1997 XSET (bufp
->code
, Lisp_Int
, (unsigned) keysym
- 0xff50);
1999 bufp
->modifiers
= x_convert_modifiers (modifiers
);
2000 bufp
->timestamp
= event
.xkey
.time
;
2005 else if (numchars
> nbytes
)
2011 if (modifiers
& Mod1Mask
)
2012 *copy_buffer
|= METABIT
;
2013 bufp
->kind
= ascii_keystroke
;
2014 XSET (bufp
->code
, Lisp_Int
, *copy_buffer
);
2016 bufp
->timestamp
= event
.xkey
.time
;
2020 for (i
= nbytes
- 1; i
> 1; i
--)
2022 bufp
->kind
= ascii_keystroke
;
2023 XSET (bufp
->code
, Lisp_Int
, copy_buffer
[i
]);
2025 bufp
->timestamp
= event
.xkey
.time
;
2038 register char *where_mapping
;
2040 s
= x_window_to_screen (event
.window
);
2041 /* Ignore keys typed on icon windows. */
2042 if (s
!= 0 && event
.window
== s
->display
.x
->icon_desc
)
2044 where_mapping
= XLookupMapping (&event
, &nbytes
);
2045 /* Nasty fix for arrow keys */
2046 if (!nbytes
&& IsCursorKey (event
.detail
& 0xff))
2048 switch (event
.detail
& 0xff)
2050 case KC_CURSOR_LEFT
:
2051 where_mapping
= "\002";
2053 case KC_CURSOR_RIGHT
:
2054 where_mapping
= "\006";
2057 where_mapping
= "\020";
2059 case KC_CURSOR_DOWN
:
2060 where_mapping
= "\016";
2065 if (numchars
- nbytes
> 0)
2069 for (i
= 0; i
< nbytes
; i
++)
2071 bufp
->kind
= ascii_keystroke
;
2072 XSET (bufp
->code
, Lisp_Int
, where_mapping
[i
]);
2073 XSET (bufp
->time
, Lisp_Int
, event
.xkey
.time
);
2082 #endif /* HAVE_X11 */
2086 s
= x_window_to_screen (event
.xcrossing
.window
);
2088 if (event
.xcrossing
.detail
== NotifyInferior
) /* Left Scrollbar */
2090 else if (event
.xcrossing
.focus
) /* Entered Window */
2092 /* If we decide we want to generate an event to be seen
2093 by the rest of Emacs, we put it here. */
2094 struct input_event emacs_event
;
2095 emacs_event
.kind
= no_event
;
2097 /* Avoid nasty pop/raise loops. */
2098 if (s
&& (!(s
->auto_raise
)
2100 || (event
.xcrossing
.time
- enter_timestamp
) > 500))
2102 x_new_focus_screen (s
);
2103 enter_timestamp
= event
.xcrossing
.time
;
2106 else if ((s
= x_window_to_scrollbar (event
.xcrossing
.window
,
2108 /* Fake a motion event */
2109 notice_mouse_movement (&emacs_event
,
2110 event
.xmotion
, s
, scrollbar_window
,
2115 if (! EQ (Vx_send_mouse_movement_events
, Qnil
)
2117 && emacs_event
.kind
!= no_event
)
2119 bcopy (&emacs_event
, bufp
, sizeof (struct input_event
));
2126 else if (s
== x_focus_screen
)
2127 x_new_focus_screen (0);
2129 else if (s
= x_window_to_screen (event
.xcrossing
.window
))
2136 s
= x_window_to_screen (event
.xfocus
.window
);
2138 x_new_focus_screen (s
);
2142 if (event
.xcrossing
.detail
!= NotifyInferior
2143 && event
.xcrossing
.subwindow
== None
2144 && event
.xcrossing
.mode
== NotifyNormal
)
2146 s
= x_window_to_screen (event
.xcrossing
.window
);
2147 if (event
.xcrossing
.focus
)
2148 x_new_focus_screen (s
);
2149 else if (s
== x_focus_screen
)
2150 x_new_focus_screen (0);
2155 s
= x_window_to_screen (event
.xfocus
.window
);
2156 if (s
&& s
== x_focus_screen
)
2157 x_new_focus_screen (0);
2160 #else /* not HAVE_X11 */
2163 if ((event
.detail
& 0xFF) == 1)
2164 break; /* Coming from our own subwindow */
2165 if (event
.subwindow
!= 0)
2166 break; /* Entering our own subwindow. */
2169 struct screen
*old_s
= x_input_screen
;
2171 s
= x_window_to_screen (event
.window
);
2174 x_new_focus_screen (s
);
2179 if ((event
.detail
& 0xFF) == 1)
2180 break; /* Entering our own subwindow */
2181 if (event
.subwindow
!= 0)
2182 break; /* Leaving our own subwindow. */
2185 if (x_focus_screen
== 0
2186 && x_input_screen
!= 0
2187 && x_input_screen
== x_window_to_screen (event
.window
)
2188 && event
.window
== x_input_screen
->display
.x
->window_desc
)
2193 screen_unhighlight (s
);
2196 #endif /* not HAVE_X11 */
2201 s
= x_window_to_screen (event
.xmotion
.window
);
2203 note_mouse_position (s
, &event
.xmotion
);
2205 else if ((s
= x_window_to_scrollbar (event
.xmotion
.window
,
2208 What should go here
?
2214 case ConfigureNotify
:
2217 s
= x_window_to_screen (event
.xconfigure
.window
);
2221 columns
= ((event
.xconfigure
.width
-
2222 (2 * s
->display
.x
->internal_border_width
)
2223 - s
->display
.x
->v_scrollbar_width
)
2224 / FONT_WIDTH (s
->display
.x
->font
));
2225 rows
= ((event
.xconfigure
.height
-
2226 (2 * s
->display
.x
->internal_border_width
)
2227 - s
->display
.x
->h_scrollbar_height
)
2228 / FONT_HEIGHT (s
->display
.x
->font
));
2230 /* Even if the number of character rows and columns has
2231 not changed, the font size may have changed, so we need
2232 to check the pixel dimensions as well. */
2233 if (columns
!= s
->width
2234 || rows
!= s
->height
2235 || event
.xconfigure
.width
!= s
->display
.x
->pixel_width
2236 || event
.xconfigure
.height
!= s
->display
.x
->pixel_height
)
2238 change_screen_size (s
, rows
, columns
, 0);
2239 x_resize_scrollbars (s
);
2240 SET_SCREEN_GARBAGED (s
);
2243 s
->display
.x
->pixel_width
= event
.xconfigure
.width
;
2244 s
->display
.x
->pixel_height
= event
.xconfigure
.height
;
2245 s
->display
.x
->left_pos
= event
.xconfigure
.x
;
2246 s
->display
.x
->top_pos
= event
.xconfigure
.y
;
2253 /* If we decide we want to generate an event to be seen
2254 by the rest of Emacs, we put it here. */
2255 struct input_event emacs_event
;
2256 emacs_event
.kind
= no_event
;
2258 s
= x_window_to_screen (event
.xbutton
.window
);
2260 if (!x_focus_screen
|| (s
== x_focus_screen
))
2261 construct_mouse_click (&emacs_event
,
2266 if ((s
= x_window_to_scrollbar (event
.xbutton
.window
,
2269 if (!x_focus_screen
|| (selected_screen
== x_focus_screen
))
2270 construct_mouse_click (&emacs_event
,
2271 &event
, s
, part
, prefix
);
2276 if (numchars
>= 1 && emacs_event
.kind
!= no_event
)
2278 bcopy (&emacs_event
, bufp
, sizeof (struct input_event
));
2286 #else /* not HAVE_X11 */
2288 case ButtonReleased
:
2289 s
= x_window_to_screen (event
.window
);
2292 if (event
.window
== s
->display
.x
->icon_desc
)
2294 x_make_screen_visible (s
);
2296 if (warp_mouse_on_deiconify
)
2297 XWarpMouse (s
->display
.x
->window_desc
, 10, 10);
2300 if (event
.window
== s
->display
.x
->window_desc
)
2306 enqueue_event (&event
, &x_mouse_queue
);
2309 bufp
->kind
= ascii_keystroke
;
2310 bufp
->code
= (char) 'X' & 037; /* C-x */
2312 XSET (bufp
->time
, Lisp_Int
, event
.xkey
.time
);
2315 bufp
->kind
= ascii_keystroke
;
2316 bufp
->code
= (char) 0; /* C-@ */
2318 XSET (bufp
->time
, Lisp_Int
, event
.xkey
.time
);
2325 #endif /* not HAVE_X11 */
2329 case CirculateNotify
:
2331 case CirculateRequest
:
2334 #endif /* HAVE_X11 */
2337 if (event
.xmapping
.request
== MappingKeyboard
)
2338 /* Someone has changed the keyboard mapping - flush the
2340 XRefreshKeyboardMapping (&event
.xmapping
);
2350 if (expected
&& ! event_found
)
2352 /* AOJ 880406: if select returns true but XPending doesn't, it means that
2353 there is an EOF condition; in other words, that X has died.
2354 Act as if there had been a hangup. */
2356 int fd
= ConnectionNumber (x_current_display
);
2359 if (0 != select (fd
+ 1, &mask
, (long *) 0, (long *) 0,
2361 && !XStuffPending ())
2362 kill (getpid (), SIGHUP
);
2364 #endif /* HAVE_SELECT */
2367 if (updating_screen
== 0)
2368 x_do_pending_expose ();
2375 /* Read and process only Expose events
2376 until we get an ExposeCopy event; then return.
2377 This is used in insert/delete line.
2378 We assume input is already blocked. */
2384 XKeyPressedEvent event
;
2388 /* while there are more events*/
2389 XMaskEvent (ExposeWindow
| ExposeRegion
| ExposeCopy
, &event
);
2393 if (event
.subwindow
!= 0)
2394 break; /* duplicate event */
2395 s
= x_window_to_screen (event
.window
);
2396 if (event
.window
== s
->display
.x
->icon_desc
)
2401 if (event
.window
== s
->display
.x
->window_desc
)
2403 expose_all_windows
= 1;
2404 s
->display
.x
->needs_exposure
= 1;
2410 if (event
.subwindow
!= 0)
2411 break; /* duplicate event */
2412 s
= x_window_to_screen (event
.window
);
2413 if (event
.window
== s
->display
.x
->icon_desc
)
2418 /* If window already needs full redraw, ignore this rectangle. */
2419 if (expose_all_windows
&& s
->display
.x
->needs_exposure
)
2421 /* Put the event on the queue of rectangles to redraw. */
2422 if (enqueue_event (&event
, &x_expose_queue
))
2423 /* If it is full, we can't record the rectangle,
2424 so redraw this entire window. */
2426 /* Say must check all windows' needs_exposure flags. */
2427 expose_all_windows
= 1;
2428 s
->display
.x
->needs_exposure
= 1;
2437 #endif /* HAVE_X11 */
2440 /* Draw a hollow box cursor. Don't change the inside of the box. */
2446 int left
= s
->cursor_x
* FONT_WIDTH (s
->display
.x
->font
)
2447 + s
->display
.x
->internal_border_width
;
2448 int top
= s
->cursor_y
* FONT_HEIGHT (s
->display
.x
->font
)
2449 + s
->display
.x
->internal_border_width
;
2450 int width
= FONT_WIDTH (s
->display
.x
->font
);
2451 int height
= FONT_HEIGHT (s
->display
.x
->font
);
2454 /* Perhaps we should subtract 1 from width and height... */
2455 XDrawRectangle (x_current_display
, s
->display
.x
->window_desc
,
2456 s
->display
.x
->cursor_gc
,
2457 left
, top
, width
- 1, height
- 1);
2459 XPixSet (s
->display
.x
->window_desc
,
2460 left
, top
, width
, 1,
2461 s
->display
.x
->cursor_pixel
);
2463 XPixSet (s
->display
.x
->window_desc
,
2464 left
, top
, 1, height
,
2465 s
->display
.x
->cursor_pixel
);
2467 XPixSet (s
->display
.x
->window_desc
,
2468 left
+width
-1, top
, 1, height
,
2469 s
->display
.x
->cursor_pixel
);
2471 XPixSet (s
->display
.x
->window_desc
,
2472 left
, top
+height
-1, width
, 1,
2473 s
->display
.x
->cursor_pixel
);
2474 #endif /* HAVE_X11 */
2477 /* Clear the cursor of screen S to background color,
2478 and mark the cursor as not shown.
2479 This is used when the text where the cursor is
2480 is about to be rewritten. */
2489 || s
->phys_cursor_x
< 0)
2493 x_display_cursor (s
, 0);
2495 XClearArea (x_current_display
, s
->display
.x
->window_desc
,
2496 s
->phys_cursor_x
* FONT_WIDTH (s
->display
.x
->font
)
2497 + s
->display
.x
->internal_border_width
,
2498 s
->phys_cursor_y
* FONT_HEIGHT (s
->display
.x
->font
)
2499 + s
->display
.x
->internal_border_width
,
2500 FONT_WIDTH (s
->display
.x
->font
) + 1, FONT_HEIGHT (s
->display
.x
->font
) + 1, False
);
2503 XPixSet (s
->display
.x
->window_desc
,
2504 s
->phys_cursor_x
* FONT_WIDTH (s
->display
.x
->font
) + s
->display
.x
->internal_border_width
,
2505 s
->phys_cursor_y
* FONT_HEIGHT (s
->display
.x
->font
) + s
->display
.x
->internal_border_width
,
2506 FONT_WIDTH (s
->display
.x
->font
), FONT_HEIGHT (s
->display
.x
->font
),
2507 s
->display
.x
->background_pixel
);
2508 #endif /* HAVE_X11 */
2509 s
->phys_cursor_x
= -1;
2513 x_display_bar_cursor (s
, on
)
2517 register int phys_x
= s
->phys_cursor_x
;
2518 register int phys_y
= s
->phys_cursor_y
;
2523 if (! s
->visible
|| (! on
&& s
->phys_cursor_x
< 0))
2528 (!on
|| phys_x
!= s
->cursor_x
|| phys_y
!= s
->cursor_y
))
2530 x1
= phys_x
* FONT_WIDTH (s
->display
.x
->font
)
2531 + s
->display
.x
->internal_border_width
;
2532 y1
= phys_y
* FONT_HEIGHT (s
->display
.x
->font
)
2533 + s
->display
.x
->internal_border_width
- 1;
2534 y2
= y1
+ FONT_HEIGHT (s
->display
.x
->font
) + 1;
2536 XDrawLine (x_current_display
, s
->display
.x
->window_desc
,
2537 s
->display
.x
->reverse_gc
, x1
, y1
, x1
, y2
);
2539 s
->phys_cursor_x
= phys_x
= -1;
2542 if (on
&& s
== x_highlight_screen
)
2544 x1
= s
->cursor_x
* FONT_WIDTH (s
->display
.x
->font
)
2545 + s
->display
.x
->internal_border_width
;
2546 y1
= s
->cursor_y
* FONT_HEIGHT (s
->display
.x
->font
)
2547 + s
->display
.x
->internal_border_width
- 1;
2548 y2
= y1
+ FONT_HEIGHT (s
->display
.x
->font
) + 1;
2550 XDrawLine (x_current_display
, s
->display
.x
->window_desc
,
2551 s
->display
.x
->cursor_gc
, x1
, y1
, x1
, y2
);
2553 s
->phys_cursor_x
= s
->cursor_x
;
2554 s
->phys_cursor_y
= s
->cursor_y
;
2562 /* Redraw the glyph at ROW, COLUMN on screen S, in the style
2563 HIGHLIGHT. HIGHLIGHT is as defined for dumpglyphs. Return the
2567 x_draw_single_glyph (s
, row
, column
, glyph
, highlight
)
2574 (column
* FONT_WIDTH (s
->display
.x
->font
)
2575 + s
->display
.x
->internal_border_width
),
2576 (row
* FONT_HEIGHT (s
->display
.x
->font
)
2577 + s
->display
.x
->internal_border_width
),
2578 &glyph
, 1, highlight
, s
->display
.x
->font
);
2581 /* Turn the displayed cursor of screen S on or off according to ON.
2582 If ON is nonzero, where to put the cursor is specified
2583 by S->cursor_x and S->cursor_y. */
2586 x_display_box_cursor (s
, on
)
2590 struct screen_glyphs
*current_glyphs
= SCREEN_CURRENT_GLYPHS (s
);
2592 /* If we're not updating, then we want to use the current screen's
2593 cursor position, not our local idea of where the cursor ought to be. */
2594 if (s
!= updating_screen
)
2596 curs_x
= SCREEN_CURSOR_X (s
);
2597 curs_y
= SCREEN_CURSOR_Y (s
);
2603 /* If cursor is off and we want it off, return quickly. */
2604 if (!on
&& s
->phys_cursor_x
< 0)
2607 /* If cursor is currently being shown and we don't want it to be
2608 or it is in the wrong place,
2609 or we want a hollow box and it's not so, (pout!)
2611 if (s
->phys_cursor_x
>= 0
2613 || s
->phys_cursor_x
!= curs_x
2614 || s
->phys_cursor_y
!= curs_y
2615 || (s
->display
.x
->text_cursor_kind
!= hollow_box_cursor
2616 && (s
!= x_highlight_screen
))))
2618 /* Erase the cursor by redrawing the character underneath it. */
2619 x_draw_single_glyph (s
, s
->phys_cursor_y
, s
->phys_cursor_x
,
2620 s
->phys_cursor_glyph
,
2621 current_glyphs
->highlight
[s
->phys_cursor_y
]);
2622 s
->phys_cursor_x
= -1;
2625 /* If we want to show a cursor,
2626 or we want a box cursor and it's not so,
2627 write it in the right place. */
2629 && (s
->phys_cursor_x
< 0
2630 || (s
->display
.x
->text_cursor_kind
!= filled_box_cursor
2631 && s
== x_highlight_screen
)))
2633 s
->phys_cursor_glyph
2634 = ((current_glyphs
->enable
[curs_y
]
2635 && curs_x
< current_glyphs
->used
[curs_y
])
2636 ? current_glyphs
->glyphs
[curs_y
][curs_x
]
2638 if (s
!= x_highlight_screen
)
2641 s
->display
.x
->text_cursor_kind
= hollow_box_cursor
;
2645 x_draw_single_glyph (s
, curs_y
, curs_x
,
2646 s
->phys_cursor_glyph
, 2);
2647 s
->display
.x
->text_cursor_kind
= filled_box_cursor
;
2650 s
->phys_cursor_x
= curs_x
;
2651 s
->phys_cursor_y
= curs_y
;
2654 if (updating_screen
!= s
)
2658 extern Lisp_Object Vbar_cursor
;
2660 x_display_cursor (s
, on
)
2664 if (EQ (Vbar_cursor
, Qnil
))
2665 x_display_box_cursor (s
, on
);
2667 x_display_bar_cursor (s
, on
);
2672 /* Refresh bitmap kitchen sink icon for screen S
2673 when we get an expose event for it. */
2679 /* Normally, the window manager handles this function. */
2683 if (s
->display
.x
->icon_bitmap_flag
)
2684 XBitmapBitsPut (s
->display
.x
->icon_desc
, 0, 0, sink_width
, sink_height
,
2685 sink_bits
, BlackPixel
, WHITE_PIX_DEFAULT
,
2686 icon_bitmap
, GXcopy
, AllPlanes
);
2689 extern struct screen
*selected_screen
;
2690 struct Lisp_String
*str
;
2691 unsigned char *string
;
2694 = XSTRING (XBUFFER (XWINDOW (s
->selected_window
)->buffer
)->name
)->data
;
2696 if (s
->display
.x
->icon_label
!= string
)
2698 s
->display
.x
->icon_label
= string
;
2699 XChangeWindow (s
->display
.x
->icon_desc
,
2700 XQueryWidth (string
, icon_font_info
->id
) + 10,
2701 icon_font_info
->height
+ 10);
2704 XText (s
->display
.x
->icon_desc
, 5, 5, string
,
2705 str
->size
, icon_font_info
->id
,
2706 BLACK_PIX_DEFAULT
, WHITE_PIX_DEFAULT
);
2709 #endif /* HAVE_X11 */
2712 /* Make the x-window of screen S use the kitchen-sink icon
2713 that's a window generated by Emacs. */
2722 if (s
->display
.x
->window_desc
== 0)
2727 XFreePixmap (x_current_display
, icon_bitmap
);
2730 XCreateBitmapFromData (x_current_display
, s
->display
.x
->window_desc
,
2731 gnu_bits
, gnu_width
, gnu_height
);
2732 x_wm_set_icon_pixmap (s
, icon_bitmap
);
2733 s
->display
.x
->icon_bitmap_flag
= 1;
2735 if (s
->display
.x
->icon_desc
)
2737 XClearIconWindow (s
->display
.x
->window_desc
);
2738 XDestroyWindow (s
->display
.x
->icon_desc
);
2741 icon_window
= XCreateWindow (s
->display
.x
->parent_desc
,
2742 0, 0, sink_width
, sink_height
,
2743 2, WhitePixmap
, (Pixmap
) NULL
);
2745 if (icon_window
== 0)
2748 XSetIconWindow (s
->display
.x
->window_desc
, icon_window
);
2749 XSelectInput (icon_window
, ExposeWindow
| UnmapWindow
);
2751 s
->display
.x
->icon_desc
= icon_window
;
2752 s
->display
.x
->icon_bitmap_flag
= 1;
2754 if (icon_bitmap
== 0)
2756 = XStoreBitmap (sink_mask_width
, sink_mask_height
, sink_mask_bits
);
2757 #endif /* HAVE_X11 */
2763 /* Make the x-window of screen S use a rectangle with text. */
2766 x_text_icon (s
, icon_name
)
2774 char *X_DefaultValue
;
2778 #define WhitePixel 1
2782 #define BlackPixel 0
2784 #endif /* not HAVE_X11 */
2786 if (s
->display
.x
->window_desc
== 0)
2789 if (icon_font_info
== 0)
2791 = XGetFont (XGetDefault (XDISPLAY
2792 (char *) XSTRING (invocation_name
)->data
,
2797 s
->display
.x
->icon_label
= icon_name
;
2799 if (! s
->display
.x
->icon_label
)
2800 s
->display
.x
->icon_label
= " *emacs* ";
2802 XSetIconName (x_current_display
, s
->display
.x
->window_desc
,
2803 (char *) s
->display
.x
->icon_label
);
2805 s
->display
.x
->icon_bitmap_flag
= 0;
2807 if (s
->display
.x
->icon_desc
)
2809 XClearIconWindow (XDISPLAY s
->display
.x
->window_desc
);
2810 XDestroyWindow (XDISPLAY s
->display
.x
->icon_desc
);
2814 s
->display
.x
->icon_label
= (unsigned char *) icon_name
;
2816 if (! s
->display
.x
->icon_label
)
2817 s
->display
.x
->icon_label
= XSTRING (s
->name
)->data
;
2819 width
= XStringWidth (s
->display
.x
->icon_label
, icon_font_info
, 0, 0);
2820 icon_window
= XCreateWindow (s
->display
.x
->parent_desc
,
2821 s
->display
.x
->left_pos
,
2822 s
->display
.x
->top_pos
,
2823 width
+ 10, icon_font_info
->height
+ 10,
2824 2, BlackPixmap
, WhitePixmap
);
2826 if (icon_window
== 0)
2829 XSetIconWindow (s
->display
.x
->window_desc
, icon_window
);
2830 XSelectInput (icon_window
, ExposeWindow
| ExposeRegion
| UnmapWindow
| ButtonPressed
);
2832 s
->display
.x
->icon_desc
= icon_window
;
2833 s
->display
.x
->icon_bitmap_flag
= 0;
2834 s
->display
.x
->icon_label
= 0;
2835 #endif /* HAVE_X11 */
2840 /* Handling X errors. */
2842 /* A handler for SIGPIPE, when it occurs on the X server's connection.
2843 This basically does an orderly shutdown of Emacs. */
2850 Fkill_emacs (make_number (70));
2853 static char *x_proto_requests
[] =
2856 "ChangeWindowAttributes",
2857 "GetWindowAttributes",
2859 "DestroySubwindows",
2876 "SetSelectionOwner",
2877 "GetSelectionOwner",
2884 "ChangeActivePointerGrab",
2904 "ListFontsWithInfo",
2913 "SetClipRectangles",
2924 "PolyFillRectangle",
2934 "CopyColormapAndFree",
2936 "UninstallColormap",
2937 "ListInstalledColormaps",
2948 "CreateGlyphCursor",
2954 "ChangeKeyboardMapping",
2955 "GetKeyboardMapping",
2956 "ChangeKeyboardControl",
2957 "GetKeyboardControl",
2959 "ChangePointerControl",
2960 "GetPointerControl",
2970 "SetPointerMapping",
2971 "GetPointerMapping",
2972 "SetModifierMapping",
2973 "GetModifierMapping",
2977 #define acceptable_x_error_p(type) ((type) == 94)
2979 x_handle_error_gracefully (event
)
2982 char error_ptr
[128];
2983 char *proto_ptr
= x_proto_requests
[event
->request_code
];
2986 XGetErrorText (x_current_display
, event
->error_code
, error_ptr
, 128);
2987 sprintf (str
, "X Protocol Error: %s on request: %s", error_ptr
, proto_ptr
);
2988 TOTALLY_UNBLOCK_INPUT
;
2993 extern int x_selection_alloc_error
;
2994 extern int x_converting_selection
;
2997 /* Handle X Errors. If the error is not traumatic,
2998 just call error (). Otherwise print a (hopefully) interesting
3001 The arg to Fkill_emacs is an exit status value
3002 and also prevents any questions. */
3004 x_error_handler (disp
, event
)
3009 #define XlibDisplayIOError (1L << 0)
3012 struct _XErrorEvent
*event
;
3015 /* Here we use the standard X handlers. */
3018 if (event
&& event
->type
== 0) /* 0 is the XError Event type. */
3022 if (event
->request_code
== BadAlloc
&& x_converting_selection
)
3023 x_selection_alloc_error
= 1;
3027 if (acceptable_x_error_p (event
->request_code
))
3028 x_handle_error_gracefully (event
);
3030 _XDefaultError (disp
, event
);
3034 disp
->flags
|= XlibDisplayIOError
;
3035 _XDefaultIOError (disp
);
3043 static unsigned int x_wire_count
;
3046 fprintf (stderr
, "Lib call: %d\n", ++x_wire_count
);
3051 /* Set the font of the x-window specified by screen S
3052 to the font named NEWNAME. This is safe to use
3053 even before S has an actual x-window. */
3057 /* A table of all the fonts we have already loaded. */
3058 static XFontStruct
**x_font_table
;
3060 /* The current capacity of x_font_table. */
3061 static int x_font_table_size
;
3063 /* The number of fonts actually stored in x_font_table.
3064 x_font_table[n] is used and valid iff 0 <= n < n_fonts.
3065 0 <= n_fonts <= x_font_table_size. */
3068 x_new_font (s
, fontname
)
3070 register char *fontname
;
3074 int n_matching_fonts
;
3075 XFontStruct
*font_info
;
3078 /* Get a list of all the fonts that match this name. Once we
3079 have a list of matching fonts, we compare them against the fonts
3080 we already have by comparing font ids. */
3081 font_names
= (char **) XListFontsWithInfo (x_current_display
, fontname
,
3082 1024, &n_matching_fonts
,
3084 /* If the server couldn't find any fonts whose named matched fontname,
3085 return an error code. */
3086 if (n_matching_fonts
== 0)
3089 /* See if we've already loaded a matching font. */
3094 for (i
= 0; i
< n_fonts
; i
++)
3095 for (j
= 0; j
< n_matching_fonts
; j
++)
3096 if (x_font_table
[i
]->fid
== font_info
[j
].fid
)
3104 /* If we have, just return it from the table. */
3106 s
->display
.x
->font
= x_font_table
[already_loaded
];
3108 /* Otherwise, load the font and add it to the table. */
3113 font
= (XFontStruct
*) XLoadQueryFont (x_current_display
, fontname
);
3117 /* Do we need to create the table? */
3118 if (x_font_table_size
== 0)
3120 x_font_table_size
= 16;
3122 = (XFontStruct
**) xmalloc (x_font_table_size
3123 * sizeof (x_font_table
[0]));
3125 /* Do we need to grow the table? */
3126 else if (n_fonts
>= x_font_table_size
)
3128 x_font_table_size
*= 2;
3130 = (XFontStruct
**) xrealloc (x_font_table
,
3132 * sizeof (x_font_table
[0])));
3135 s
->display
.x
->font
= x_font_table
[n_fonts
++] = font
;
3138 /* Free the information from XListFontsWithInfo. The data
3139 we actually retain comes from XLoadQueryFont. */
3140 XFreeFontInfo (font_names
, font_info
, n_matching_fonts
);
3142 /* Now make the screen display the given font. */
3143 if (s
->display
.x
->window_desc
!= 0)
3145 XSetFont (x_current_display
, s
->display
.x
->normal_gc
,
3146 s
->display
.x
->font
->fid
);
3147 XSetFont (x_current_display
, s
->display
.x
->reverse_gc
,
3148 s
->display
.x
->font
->fid
);
3149 XSetFont (x_current_display
, s
->display
.x
->cursor_gc
,
3150 s
->display
.x
->font
->fid
);
3152 x_set_window_size (s
, s
->width
, s
->height
);
3158 x_new_font (s
, newname
)
3160 register char *newname
;
3165 temp
= XGetFont (newname
);
3166 if (temp
== (FONT_TYPE
*) 0)
3169 if (s
->display
.x
->font
)
3170 XLoseFont (s
->display
.x
->font
);
3172 s
->display
.x
->font
= temp
;
3174 if (s
->display
.x
->window_desc
!= 0)
3175 x_set_window_size (s
, s
->width
, s
->height
);
3181 x_calc_absolute_position (s
)
3185 if (s
->display
.x
->left_pos
< 0)
3186 s
->display
.x
->left_pos
3187 = XINT (x_screen_width
) - PIXEL_WIDTH (s
) + s
->display
.x
->left_pos
;
3189 if (s
->display
.x
->top_pos
< 0)
3190 s
->display
.x
->top_pos
3191 = XINT (x_screen_height
) - PIXEL_HEIGHT (s
) + s
->display
.x
->top_pos
;
3193 WINDOWINFO_TYPE parentinfo
;
3195 XGetWindowInfo (s
->display
.x
->window_desc
, &parentinfo
);
3197 if (s
->display
.x
->left_pos
< 0)
3198 s
->display
.x
->left_pos
= parentinfo
.width
+ (s
->display
.x
->left_pos
+ 1)
3199 - PIXEL_WIDTH (s
) - 2 * s
->display
.x
->internal_border_width
;
3201 if (s
->display
.x
->top_pos
< 0)
3202 s
->display
.x
->top_pos
= parentinfo
.height
+ (s
->display
.x
->top_pos
+ 1)
3203 - PIXEL_HEIGHT (s
) - 2 * s
->display
.x
->internal_border_width
;
3207 x_set_offset (s
, xoff
, yoff
)
3209 register int xoff
, yoff
;
3211 s
->display
.x
->top_pos
= yoff
;
3212 s
->display
.x
->left_pos
= xoff
;
3213 x_calc_absolute_position (s
);
3216 XMoveWindow (XDISPLAY s
->display
.x
->window_desc
,
3217 s
->display
.x
->left_pos
, s
->display
.x
->top_pos
);
3219 x_wm_set_size_hint (s
, 0);
3224 /* Call this to change the size of screen S's x-window. */
3226 x_set_window_size (s
, cols
, rows
)
3228 register int cols
, rows
;
3230 int pixelwidth
, pixelheight
;
3232 int ibw
= s
->display
.x
->internal_border_width
;
3236 /* ??? Who DOES worry about minimum reasonable sizes? */
3237 pixelwidth
= (cols
* FONT_WIDTH (s
->display
.x
->font
) + 2 * ibw
3238 + s
->display
.x
->v_scrollbar_width
);
3239 pixelheight
= (rows
* FONT_HEIGHT (s
->display
.x
->font
) + 2 * ibw
3240 + s
->display
.x
->h_scrollbar_height
);
3243 x_wm_set_size_hint (s
, 0);
3244 #endif /* HAVE_X11 */
3245 XChangeWindowSize (s
->display
.x
->window_desc
, pixelwidth
, pixelheight
);
3251 x_set_resize_hint (s
)
3255 XSetResizeHint (s
->display
.x
->window_desc
, 2 * s
->display
.x
->internal_border_width
,
3256 2 * s
->display
.x
->internal_border_width
,
3257 FONT_WIDTH (s
->display
.x
->font
), FONT_HEIGHT (s
->display
.x
->font
));
3259 #endif /* not HAVE_X11 */
3262 x_set_mouse_position (s
, x
, y
)
3271 pix_x
= (SCREEN_WIDTH (s
)
3272 * FONT_WIDTH (s
->display
.x
->font
)
3273 + 2 * s
->display
.x
->internal_border_width
3274 + s
->display
.x
->v_scrollbar_width
) / 2;
3276 pix_x
= x
* FONT_WIDTH (s
->display
.x
->font
) + 2; /* add 2 pixels to each
3277 dimension to move the
3282 pix_y
= (SCREEN_HEIGHT (s
)
3283 * FONT_HEIGHT (s
->display
.x
->font
)
3284 + 2 * s
->display
.x
->internal_border_width
3285 + s
->display
.x
->h_scrollbar_height
) / 2;
3287 pix_y
= y
* FONT_HEIGHT (s
->display
.x
->font
) + 2;
3293 XWarpMousePointer (s
->display
.x
->window_desc
, pix_x
, pix_y
);
3298 x_focus_on_screen (s
)
3303 /* I don't think that the ICCCM allows programs to do things like this
3304 without the interaction of the window manager. Whatever you end up
3305 doing with this code, do it to x_unfocus_screen too. */
3306 XSetInputFocus (x_current_display
, s
->display
.x
->window_desc
,
3307 RevertToPointerRoot
, CurrentTime
);
3311 x_unfocus_screen (s
)
3315 /* Look at the remarks in x_focus_on_screen. */
3316 if (x_focus_screen
== s
)
3317 XSetInputFocus (x_current_display
, PointerRoot
,
3318 RevertToPointerRoot
, CurrentTime
);
3324 /* Raise screen S. */
3332 XRaiseWindow (XDISPLAY s
->display
.x
->window_desc
);
3338 /* Lower screen S. */
3346 XLowerWindow (XDISPLAY s
->display
.x
->window_desc
);
3352 /* Change from withdrawn state to mapped state. */
3354 x_make_screen_visible (s
)
3361 if (! SCREEN_VISIBLE_P (s
))
3364 if (! EQ (Vx_no_window_manager
, Qt
))
3365 x_wm_set_window_state (s
, NormalState
);
3367 XMapWindow (XDISPLAY s
->display
.x
->window_desc
);
3368 if (s
->display
.x
->v_scrollbar
!= 0 || s
->display
.x
->h_scrollbar
!= 0)
3369 XMapSubwindows (x_current_display
, s
->display
.x
->window_desc
);
3371 XMapWindow (XDISPLAY s
->display
.x
->window_desc
);
3372 if (s
->display
.x
->icon_desc
!= 0)
3373 XUnmapWindow (s
->display
.x
->icon_desc
);
3375 /* Handled by the MapNotify event for X11 */
3379 /* NOTE: this may cause problems for the first screen. */
3381 #endif /* not HAVE_X11 */
3389 /* Change from mapped state to withdrawn state. */
3391 x_make_screen_invisible (s
)
3402 if (! EQ (Vx_no_window_manager
, Qt
))
3406 unmap
.type
= UnmapNotify
;
3407 unmap
.window
= s
->display
.x
->window_desc
;
3408 unmap
.event
= DefaultRootWindow (x_current_display
);
3409 unmap
.from_configure
= False
;
3410 XSendEvent (x_current_display
, DefaultRootWindow (x_current_display
),
3411 False
, SubstructureRedirectMask
|SubstructureNotifyMask
,
3415 /* The new function below does the same as the above code, plus unmapping
3416 the window. Sending the event without actually unmapping can make
3417 the window manager start ignoring the window (i.e., no more title bar,
3418 icon manager stuff.) */
3421 /* New function available with R4 */
3422 if (! XWithdrawWindow (x_current_display
, s
->display
.x
->window_desc
,
3423 DefaultScreen (x_current_display
)))
3425 UNBLOCK_INPUT_RESIGNAL
;
3426 error ("Can't notify window manager of iconification.");
3430 XUnmapWindow (XDISPLAY s
->display
.x
->window_desc
);
3432 s
->visible
= 0; /* Handled by the UnMap event for X11 */
3433 if (s
->display
.x
->icon_desc
!= 0)
3434 XUnmapWindow (XDISPLAY s
->display
.x
->icon_desc
);
3435 #endif /* not HAVE_X11 */
3441 /* Window manager communication. Created in Fx_open_connection. */
3442 extern Atom Xatom_wm_change_state
;
3444 /* Change window state from mapped to iconified. */
3446 x_iconify_screen (s
)
3457 if (! EQ (Vx_no_window_manager
, Qt
))
3458 if (! XIconifyWindow (x_current_display
, s
->display
.x
->window_desc
,
3459 DefaultScreen (x_current_display
)))
3461 UNBLOCK_INPUT_RESIGNAL
;
3462 error ("Can't notify window manager of iconification.");
3469 XClientMessageEvent message
;
3471 message
.window
= s
->display
.x
->window_desc
;
3472 message
.type
= ClientMessage
;
3473 message
.message_type
= Xatom_wm_change_state
;
3474 message
.format
= 32;
3475 message
.data
.l
[0] = IconicState
;
3477 if (! XSendEvent (x_current_display
,
3478 DefaultRootWindow (x_current_display
),
3480 SubstructureRedirectMask
| SubstructureNotifyMask
,
3483 UNBLOCK_INPUT_RESIGNAL
;
3484 error ("Can't notify window manager of iconification.");
3489 XUnmapWindow (XDISPLAY s
->display
.x
->window_desc
);
3491 s
->visible
= 0; /* Handled in the UnMap event for X11. */
3492 if (s
->display
.x
->icon_desc
!= 0)
3494 XMapWindow (XDISPLAY s
->display
.x
->icon_desc
);
3503 /* Destroy the X window of screen S.
3504 DISPL is the former s->display (since s->display
3505 has already been nulled out). */
3507 x_destroy_window (s
, displ
)
3509 union display displ
;
3514 if (displ
.x
->icon_desc
!= 0)
3515 XDestroyWindow (XDISPLAY displ
.x
->icon_desc
);
3516 XDestroyWindow (XDISPLAY displ
.x
->window_desc
);
3521 if (s
== x_focus_screen
)
3523 if (s
== x_highlight_screen
)
3524 x_highlight_screen
= 0;
3529 /* Manage event queues.
3531 This code is only used by the X10 support.
3533 We cannot leave events in the X queue and get them when we are ready
3534 because X does not provide a subroutine to get only a certain kind
3535 of event but not block if there are no queued events of that kind.
3537 Therefore, we must examine events as they come in and copy events
3538 of certain kinds into our private queues.
3540 All ExposeRegion events are put in x_expose_queue.
3541 All ButtonPressed and ButtonReleased events are put in x_mouse_queue. */
3544 /* Write the event *P_XREP into the event queue *QUEUE.
3545 If the queue is full, do nothing, but return nonzero. */
3548 enqueue_event (p_xrep
, queue
)
3549 register XEvent
*p_xrep
;
3550 register struct event_queue
*queue
;
3552 int newindex
= queue
->windex
+ 1;
3553 if (newindex
== EVENT_BUFFER_SIZE
)
3555 if (newindex
== queue
->rindex
)
3557 queue
->xrep
[queue
->windex
] = *p_xrep
;
3558 queue
->windex
= newindex
;
3562 /* Fetch the next event from queue *QUEUE and store it in *P_XREP.
3563 If *QUEUE is empty, do nothing and return 0. */
3566 dequeue_event (p_xrep
, queue
)
3567 register XEvent
*p_xrep
;
3568 register struct event_queue
*queue
;
3570 if (queue
->windex
== queue
->rindex
)
3572 *p_xrep
= queue
->xrep
[queue
->rindex
++];
3573 if (queue
->rindex
== EVENT_BUFFER_SIZE
)
3578 /* Return the number of events buffered in *QUEUE. */
3581 queue_event_count (queue
)
3582 register struct event_queue
*queue
;
3584 int tem
= queue
->windex
- queue
->rindex
;
3587 return EVENT_BUFFER_SIZE
+ tem
;
3590 /* Return nonzero if mouse input is pending. */
3593 mouse_event_pending_p ()
3595 return queue_event_count (&x_mouse_queue
);
3601 x_wm_set_size_hint (s
, prompting
)
3605 XSizeHints size_hints
;
3606 Window window
= s
->display
.x
->window_desc
;
3608 size_hints
.flags
= PResizeInc
| PMinSize
| PMaxSize
;
3610 size_hints
.flags
|= PBaseSize
;
3613 flexlines
= s
->height
;
3615 size_hints
.x
= s
->display
.x
->left_pos
;
3616 size_hints
.y
= s
->display
.x
->top_pos
;
3617 size_hints
.height
= PIXEL_HEIGHT (s
);
3618 size_hints
.width
= PIXEL_WIDTH (s
);
3619 size_hints
.width_inc
= FONT_WIDTH (s
->display
.x
->font
);
3620 size_hints
.height_inc
= FONT_HEIGHT (s
->display
.x
->font
);
3621 size_hints
.base_width
= (2 * s
->display
.x
->internal_border_width
)
3622 + s
->display
.x
->v_scrollbar_width
;
3623 size_hints
.base_height
= (2 * s
->display
.x
->internal_border_width
)
3624 + s
->display
.x
->h_scrollbar_height
;
3625 size_hints
.min_width
= size_hints
.base_width
+ size_hints
.width_inc
;
3626 size_hints
.min_height
= size_hints
.base_height
+ size_hints
.height_inc
;
3627 size_hints
.max_width
= x_screen_width
3628 - ((2 * s
->display
.x
->internal_border_width
)
3629 + s
->display
.x
->v_scrollbar_width
);
3630 size_hints
.max_height
= x_screen_height
3631 - ((2 * s
->display
.x
->internal_border_width
)
3632 + s
->display
.x
->h_scrollbar_height
);
3635 size_hints
.flags
|= prompting
;
3638 XSizeHints hints
; /* Sometimes I hate X Windows... */
3640 XGetNormalHints (x_current_display
, window
, &hints
);
3641 if (hints
.flags
& PSize
)
3642 size_hints
.flags
|= PSize
;
3643 if (hints
.flags
& PPosition
)
3644 size_hints
.flags
|= PPosition
;
3645 if (hints
.flags
& USPosition
)
3646 size_hints
.flags
|= USPosition
;
3647 if (hints
.flags
& USSize
)
3648 size_hints
.flags
|= USSize
;
3652 XSetNormalHints (x_current_display
, window
, &size_hints
);
3654 XSetWMNormalHints (x_current_display
, window
, &size_hints
);
3657 /* Used for IconicState or NormalState */
3658 x_wm_set_window_state (s
, state
)
3663 Window window
= s
->display
.x
->window_desc
;
3665 wm_hints
.flags
= StateHint
;
3666 wm_hints
.initial_state
= state
;
3667 XSetWMHints (x_current_display
, window
, &wm_hints
);
3670 x_wm_set_icon_pixmap (s
, icon_pixmap
)
3675 Window window
= s
->display
.x
->window_desc
;
3677 wm_hints
.flags
= IconPixmapHint
;
3678 wm_hints
.icon_pixmap
= icon_pixmap
;
3679 XSetWMHints (x_current_display
, window
, &wm_hints
);
3682 x_wm_set_icon_position (s
, icon_x
, icon_y
)
3687 Window window
= s
->display
.x
->window_desc
;
3689 wm_hints
.flags
= IconPositionHint
;
3690 wm_hints
.icon_x
= icon_x
;
3691 wm_hints
.icon_y
= icon_y
;
3692 XSetWMHints (x_current_display
, window
, &wm_hints
);
3697 x_term_init (display_name
)
3703 extern int old_fcntl_owner
;
3706 x_focus_screen
= x_highlight_screen
= 0;
3708 x_current_display
= XOpenDisplay (display_name
);
3709 if (x_current_display
== 0)
3710 fatal ("X server %s not responding; check the DISPLAY environment variable or use \"-d\"\n",
3715 int hostname_size
= MAXHOSTNAMELEN
+ 1;
3717 hostname
= (char *) xmalloc (hostname_size
);
3720 XSetAfterFunction (x_current_display
, x_trace_wire
);
3723 invocation_name
= Ffile_name_nondirectory (Fcar (Vcommand_line_args
));
3725 /* Try to get the host name; if the buffer is too short, try
3726 again. Apparently, the only indication gethostname gives of
3727 whether the buffer was large enough is the presence or absence
3728 of a '\0' in the string. Eech. */
3731 gethostname (hostname
, hostname_size
- 1);
3732 hostname
[hostname_size
- 1] = '\0';
3734 /* Was the buffer large enough for gethostname to store the '\0'? */
3735 if (strlen (hostname
) < hostname_size
- 1)
3738 hostname_size
<<= 1;
3739 hostname
= (char *) xrealloc (hostname
, hostname_size
);
3741 x_id_name
= (char *) xmalloc (XSTRING (invocation_name
)->size
3744 sprintf (x_id_name
, "%s@%s", XSTRING (invocation_name
)->data
, hostname
);
3747 dup2 (ConnectionNumber (x_current_display
), 0);
3749 #ifndef SYSV_STREAMS
3750 /* Streams somehow keeps track of which descriptor number
3751 is being used to talk to X. So it is not safe to substitute
3752 descriptor 0. But it is safe to make descriptor 0 a copy of it. */
3753 close (ConnectionNumber (x_current_display
));
3754 ConnectionNumber (x_current_display
) = 0; /* Looks a little strange?
3755 * check the def of the macro;
3756 * it is a genuine lvalue */
3757 #endif /* not SYSV_STREAMS */
3759 #endif /* HAVE_X11 */
3762 old_fcntl_owner
= fcntl (0, F_GETOWN
, 0);
3763 #ifdef F_SETOWN_SOCK_NEG
3764 fcntl (0, F_SETOWN
, -getpid ()); /* stdin is a socket here */
3766 fcntl (0, F_SETOWN
, getpid ());
3767 #endif /* F_SETOWN_SOCK_NEG */
3768 #endif /* F_SETOWN */
3774 /* Must use interrupt input because we cannot otherwise
3775 arrange for C-g to be noticed immediately.
3776 We cannot connect it to SIGINT. */
3777 Fset_input_mode (Qt
, Qnil
, Qt
, Qnil
);
3779 expose_all_windows
= 0;
3781 clear_screen_hook
= XTclear_screen
;
3782 clear_end_of_line_hook
= XTclear_end_of_line
;
3783 ins_del_lines_hook
= XTins_del_lines
;
3784 change_line_highlight_hook
= XTchange_line_highlight
;
3785 insert_glyphs_hook
= XTinsert_glyphs
;
3786 write_glyphs_hook
= XTwrite_glyphs
;
3787 delete_glyphs_hook
= XTdelete_glyphs
;
3788 ring_bell_hook
= XTring_bell
;
3789 reset_terminal_modes_hook
= XTreset_terminal_modes
;
3790 set_terminal_modes_hook
= XTset_terminal_modes
;
3791 update_begin_hook
= XTupdate_begin
;
3792 update_end_hook
= XTupdate_end
;
3793 set_terminal_window_hook
= XTset_terminal_window
;
3794 read_socket_hook
= XTread_socket
;
3795 cursor_to_hook
= XTcursor_to
;
3796 reassert_line_highlight_hook
= XTreassert_line_highlight
;
3797 screen_rehighlight_hook
= XTscreen_rehighlight
;
3798 mouse_position_hook
= XTmouse_position
;
3800 scroll_region_ok
= 1; /* we'll scroll partial screens */
3801 char_ins_del_ok
= 0; /* just as fast to write the line */
3802 line_ins_del_ok
= 1; /* we'll just blt 'em */
3803 fast_clear_end_of_line
= 1; /* X does this well */
3804 memory_below_screen
= 0; /* we don't remember what scrolls
3808 XHandleError (x_error_handler
);
3809 XHandleIOError (x_error_handler
);
3811 /* Disable Window Change signals; they are handled by X events. */
3813 signal (SIGWINCH
, SIG_DFL
);
3814 #endif /* SIGWINCH */
3816 signal (SIGPIPE
, x_death_handler
);
3822 staticpro (&invocation_name
);
3823 invocation_name
= Qnil
;
3825 #endif /* HAVE_X11 */
3826 #endif /* HAVE_X_WINDOWS */