--- /dev/null
+/* The event_stream interface for X11 with Xt, and/or tty frames.
+ Copyright (C) 1991-5, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1995 Sun Microsystems, Inc.
+ Copyright (C) 1996 Ben Wing.
+
+This file is part of XEmacs.
+
+XEmacs is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING. If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+/* Synched up with: Not in FSF. */
+
+#include <config.h>
+#include "lisp.h"
+
+#include "console-x.h"
+#include "../lwlib/lwlib.h"
+#include "EmacsFrame.h"
+
+#include "blocktype.h"
+#include "buffer.h"
+#include "console.h"
+#include "console-tty.h"
+#include "events.h"
+#include "frame.h"
+#include "objects-x.h"
+#include "process.h"
+#include "redisplay.h"
+#include "elhash.h"
+
+#include "systime.h"
+#include "sysproc.h" /* for MAXDESC */
+
+#include "xintrinsicp.h" /* CoreP.h needs this */
+#include <X11/CoreP.h> /* Numerous places access the fields of
+ a core widget directly. We could
+ use XtGetValues(), but ... */
+#include <X11/ShellP.h>
+
+#ifdef HAVE_XIM
+#ifdef XIM_MOTIF
+#include <Xm/Xm.h>
+#endif
+#include "lstream.h"
+#include "file-coding.h"
+#endif
+
+#ifdef HAVE_DRAGNDROP
+#include "dragdrop.h"
+#endif
+
+#if defined (HAVE_OFFIX_DND)
+#include "offix.h"
+#endif
+
+#include "events-mod.h"
+
+void enqueue_focus_event (Widget wants_it, Lisp_Object frame, int in_p);
+static void handle_focus_event_1 (struct frame *f, int in_p);
+static void handle_focus_event_2 (Window w, struct frame *f, int in_p);
+
+static struct event_stream *Xt_event_stream;
+
+/* With the new event model, all events go through XtDispatchEvent()
+ and are picked up by an event handler that is added to each frame
+ widget. (This is how it's supposed to be.) In the old method,
+ Emacs sucks out events directly from XtNextEvent() and only
+ dispatches the events that it doesn't need to deal with. This
+ old way has lots of corresponding junk that is no longer
+ necessary: lwlib extensions, synthetic XAnyEvents, unnecessary
+ magic events, etc. */
+
+/* The one and only one application context that Emacs uses. */
+XtAppContext Xt_app_con;
+
+/* Do we accept events sent by other clients? */
+int x_allow_sendevents;
+
+#ifdef DEBUG_XEMACS
+Fixnum debug_x_events;
+#endif
+
+static int process_events_occurred;
+static int tty_events_occurred;
+static Widget widget_with_focus;
+
+/* Mask of bits indicating the descriptors that we wait for input on */
+extern SELECT_TYPE input_wait_mask, process_only_mask, tty_only_mask;
+
+static const String x_fallback_resources[] =
+{
+ /* This file is automatically generated from the app-defaults file
+ in ../etc/Emacs.ad. These resources are consulted only if no
+ app-defaults file is found at all.
+ */
+#include <Emacs.ad.h>
+ 0
+};
+
+static Lisp_Object x_keysym_to_emacs_keysym (KeySym keysym, int simple_p);
+void emacs_Xt_mapping_action (Widget w, XEvent *event);
+void debug_process_finalization (Lisp_Process *p);
+void emacs_Xt_event_handler (Widget wid, XtPointer closure, XEvent *event,
+ Boolean *continue_to_dispatch);
+
+static int last_quit_check_signal_tick_count;
+
+Lisp_Object Qkey_mapping;
+Lisp_Object Qsans_modifiers;
+
+\f
+/************************************************************************/
+/* keymap handling */
+/************************************************************************/
+
+/* X bogusly doesn't define the interpretations of any bits besides
+ ModControl, ModShift, and ModLock; so the Interclient Communication
+ Conventions Manual says that we have to bend over backwards to figure
+ out what the other modifier bits mean. According to ICCCM:
+
+ - Any keycode which is assigned ModControl is a "control" key.
+
+ - Any modifier bit which is assigned to a keycode which generates Meta_L
+ or Meta_R is the modifier bit meaning "meta". Likewise for Super, Hyper,
+ etc.
+
+ - Any keypress event which contains ModControl in its state should be
+ interpreted as a "control" character.
+
+ - Any keypress event which contains a modifier bit in its state which is
+ generated by a keycode whose corresponding keysym is Meta_L or Meta_R
+ should be interpreted as a "meta" character. Likewise for Super, Hyper,
+ etc.
+
+ - It is illegal for a keysym to be associated with more than one modifier
+ bit.
+
+ This means that the only thing that emacs can reasonably interpret as a
+ "meta" key is a key whose keysym is Meta_L or Meta_R, and which generates
+ one of the modifier bits Mod1-Mod5.
+
+ Unfortunately, many keyboards don't have Meta keys in their default
+ configuration. So, if there are no Meta keys, but there are "Alt" keys,
+ emacs will interpret Alt as Meta. If there are both Meta and Alt keys,
+ then the Meta keys mean "Meta", and the Alt keys mean "Alt" (it used to
+ mean "Symbol," but that just confused the hell out of way too many people).
+
+ This works with the default configurations of the 19 keyboard-types I've
+ checked.
+
+ Emacs detects keyboard configurations which violate the above rules, and
+ prints an error message on the standard-error-output. (Perhaps it should
+ use a pop-up-window instead.)
+ */
+
+/* For every key on the keyboard that has a known character correspondence,
+ we define the ascii-character property of the keysym, and make the
+ default binding for the key be self-insert-command.
+
+ The following magic is basically intimate knowledge of X11/keysymdef.h.
+ The keysym mappings defined by X11 are based on the iso8859 standards,
+ except for Cyrillic and Greek.
+
+ In a non-Mule world, a user can still have a multi-lingual editor, by doing
+ (set-face-font "...-iso8859-2" (current-buffer))
+ for all their Latin-2 buffers, etc. */
+
+static Lisp_Object
+x_keysym_to_character (KeySym keysym)
+{
+#ifdef MULE
+ Lisp_Object charset = Qzero;
+#define USE_CHARSET(var,cs) \
+ ((var) = CHARSET_BY_LEADING_BYTE (LEADING_BYTE_##cs))
+#else
+#define USE_CHARSET(var,lb)
+#endif /* MULE */
+ int code = 0;
+
+ if ((keysym & 0xff) < 0xa0)
+ return Qnil;
+
+ switch (keysym >> 8)
+ {
+ case 0: /* ASCII + Latin1 */
+ USE_CHARSET (charset, LATIN_ISO8859_1);
+ code = keysym & 0x7f;
+ break;
+ case 1: /* Latin2 */
+ USE_CHARSET (charset, LATIN_ISO8859_2);
+ code = keysym & 0x7f;
+ break;
+ case 2: /* Latin3 */
+ USE_CHARSET (charset, LATIN_ISO8859_3);
+ code = keysym & 0x7f;
+ break;
+ case 3: /* Latin4 */
+ USE_CHARSET (charset, LATIN_ISO8859_4);
+ code = keysym & 0x7f;
+ break;
+ case 4: /* Katakana */
+ USE_CHARSET (charset, KATAKANA_JISX0201);
+ if ((keysym & 0xff) > 0xa0)
+ code = keysym & 0x7f;
+ break;
+ case 5: /* Arabic */
+ USE_CHARSET (charset, ARABIC_ISO8859_6);
+ code = keysym & 0x7f;
+ break;
+ case 6: /* Cyrillic */
+ {
+ static unsigned char const cyrillic[] = /* 0x20 - 0x7f */
+ {0x00, 0x72, 0x73, 0x71, 0x74, 0x75, 0x76, 0x77,
+ 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x00, 0x7e, 0x7f,
+ 0x70, 0x22, 0x23, 0x21, 0x24, 0x25, 0x26, 0x27,
+ 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x00, 0x2e, 0x2f,
+ 0x6e, 0x50, 0x51, 0x66, 0x54, 0x55, 0x64, 0x53,
+ 0x65, 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e,
+ 0x5f, 0x6f, 0x60, 0x61, 0x62, 0x63, 0x56, 0x52,
+ 0x6c, 0x6b, 0x57, 0x68, 0x6d, 0x69, 0x67, 0x6a,
+ 0x4e, 0x30, 0x31, 0x46, 0x34, 0x35, 0x44, 0x33,
+ 0x45, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e,
+ 0x3f, 0x4f, 0x40, 0x41, 0x42, 0x43, 0x36, 0x32,
+ 0x4c, 0x4b, 0x37, 0x48, 0x4d, 0x49, 0x47, 0x4a};
+ USE_CHARSET (charset, CYRILLIC_ISO8859_5);
+ code = cyrillic[(keysym & 0x7f) - 0x20];
+ break;
+ }
+ case 7: /* Greek */
+ {
+ static unsigned char const greek[] = /* 0x20 - 0x7f */
+ {0x00, 0x36, 0x38, 0x39, 0x3a, 0x5a, 0x00, 0x3c,
+ 0x3e, 0x5b, 0x00, 0x3f, 0x00, 0x00, 0x35, 0x2f,
+ 0x00, 0x5c, 0x5d, 0x5e, 0x5f, 0x7a, 0x40, 0x7c,
+ 0x7d, 0x7b, 0x60, 0x7e, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
+ 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
+ 0x50, 0x51, 0x53, 0x00, 0x54, 0x55, 0x56, 0x57,
+ 0x58, 0x59, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+ 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
+ 0x70, 0x71, 0x73, 0x72, 0x74, 0x75, 0x76, 0x77,
+ 0x78, 0x79, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+ USE_CHARSET (charset, GREEK_ISO8859_7);
+ code = greek[(keysym & 0x7f) - 0x20];
+ break;
+ }
+ case 8: /* Technical */
+ break;
+ case 9: /* Special */
+ break;
+ case 10: /* Publishing */
+ break;
+ case 11: /* APL */
+ break;
+ case 12: /* Hebrew */
+ USE_CHARSET (charset, HEBREW_ISO8859_8);
+ code = keysym & 0x7f;
+ break;
+ case 13: /* Thai */
+ /* #### This needs to deal with character composition. */
+ USE_CHARSET (charset, THAI_TIS620);
+ code = keysym & 0x7f;
+ break;
+ case 14: /* Korean Hangul */
+ break;
+ case 19: /* Latin 9 - ISO8859-15 - unsupported charset. */
+ break;
+ case 32: /* Currency */
+ break;
+ default:
+ break;
+ }
+
+ if (code == 0)
+ return Qnil;
+
+#ifdef MULE
+ return make_char (MAKE_CHAR (charset, code, 0));
+#else
+ return make_char (code + 0x80);
+#endif
+}
+
+/* #### The way that keysym correspondence to characters should work:
+ - a Lisp_Event should contain a keysym AND a character slot.
+ - keybindings are tried with the keysym. If no binding can be found,
+ and there is a corresponding character, call self-insert-command.
+
+ #### Nuke x-iso8859-1.el.
+ #### Nuke the Qascii_character property.
+ #### Nuke Vcharacter_set_property.
+*/
+static void
+maybe_define_x_key_as_self_inserting_character (KeySym keysym, Lisp_Object symbol)
+{
+ Lisp_Object character = x_keysym_to_character (keysym);
+
+ if (CHARP (character))
+ {
+ extern Lisp_Object Vcurrent_global_map;
+ extern Lisp_Object Qascii_character;
+ if (NILP (Flookup_key (Vcurrent_global_map, symbol, Qnil)))
+ {
+ Fput (symbol, Qascii_character, character);
+ Fdefine_key (Vcurrent_global_map, symbol, Qself_insert_command);
+ }
+ }
+}
+
+static void
+x_has_keysym (KeySym keysym, Lisp_Object hash_table, int with_modifiers)
+{
+ KeySym upper_lower[2];
+ int j;
+
+ if (keysym < 0x80) /* Optimize for ASCII keysyms */
+ return;
+
+ /* If you execute:
+ xmodmap -e 'keysym NN = scaron'
+ and then press (Shift scaron), X11 will return the different
+ keysym `Scaron', but `xmodmap -pke' might not even mention `Scaron'.
+ So we "register" both `scaron' and `Scaron'. */
+#ifdef HAVE_XCONVERTCASE
+ XConvertCase (keysym, &upper_lower[0], &upper_lower[1]);
+#else
+ upper_lower[0] = upper_lower[1] = keysym;
+#endif
+
+ for (j = 0; j < (upper_lower[0] == upper_lower[1] ? 1 : 2); j++)
+ {
+ char *name;
+ keysym = upper_lower[j];
+
+ name = XKeysymToString (keysym);
+ if (name)
+ {
+ /* X guarantees NAME to be in the Host Portable Character Encoding */
+ Lisp_Object sym = x_keysym_to_emacs_keysym (keysym, 0);
+ Lisp_Object new_value = with_modifiers ? Qt : Qsans_modifiers;
+ Lisp_Object old_value = Fgethash (sym, hash_table, Qnil);
+
+ if (! EQ (old_value, new_value)
+ && ! (EQ (old_value, Qsans_modifiers) &&
+ EQ (new_value, Qt)))
+ {
+ maybe_define_x_key_as_self_inserting_character (keysym, sym);
+ Fputhash (build_ext_string (name, Qbinary), new_value, hash_table);
+ Fputhash (sym, new_value, hash_table);
+ }
+ }
+ }
+}
+
+static void
+x_reset_key_mapping (struct device *d)
+{
+ Display *display = DEVICE_X_DISPLAY (d);
+ struct x_device *xd = DEVICE_X_DATA (d);
+ KeySym *keysym, *keysym_end;
+ Lisp_Object hash_table;
+ int key_code_count, keysyms_per_code;
+
+ if (xd->x_keysym_map)
+ XFree ((char *) xd->x_keysym_map);
+ XDisplayKeycodes (display,
+ &xd->x_keysym_map_min_code,
+ &xd->x_keysym_map_max_code);
+ key_code_count = xd->x_keysym_map_max_code - xd->x_keysym_map_min_code + 1;
+ xd->x_keysym_map =
+ XGetKeyboardMapping (display, xd->x_keysym_map_min_code, key_code_count,
+ &xd->x_keysym_map_keysyms_per_code);
+
+ hash_table = xd->x_keysym_map_hash_table;
+ if (HASH_TABLEP (hash_table))
+ Fclrhash (hash_table);
+ else
+ xd->x_keysym_map_hash_table = hash_table =
+ make_lisp_hash_table (128, HASH_TABLE_NON_WEAK, HASH_TABLE_EQUAL);
+
+ for (keysym = xd->x_keysym_map,
+ keysyms_per_code = xd->x_keysym_map_keysyms_per_code,
+ keysym_end = keysym + (key_code_count * keysyms_per_code);
+ keysym < keysym_end;
+ keysym += keysyms_per_code)
+ {
+ int j;
+
+ if (keysym[0] == NoSymbol)
+ continue;
+
+ x_has_keysym (keysym[0], hash_table, 0);
+
+ for (j = 1; j < keysyms_per_code; j++)
+ {
+ if (keysym[j] != keysym[0] &&
+ keysym[j] != NoSymbol)
+ x_has_keysym (keysym[j], hash_table, 1);
+ }
+ }
+}
+
+static const char *
+index_to_name (int indice)
+{
+ switch (indice)
+ {
+ case ShiftMapIndex: return "ModShift";
+ case LockMapIndex: return "ModLock";
+ case ControlMapIndex: return "ModControl";
+ case Mod1MapIndex: return "Mod1";
+ case Mod2MapIndex: return "Mod2";
+ case Mod3MapIndex: return "Mod3";
+ case Mod4MapIndex: return "Mod4";
+ case Mod5MapIndex: return "Mod5";
+ default: return "???";
+ }
+}
+
+/* Boy, I really wish C had local functions... */
+struct c_doesnt_have_closures /* #### not yet used */
+{
+ int warned_about_overlapping_modifiers;
+ int warned_about_predefined_modifiers;
+ int warned_about_duplicate_modifiers;
+ int meta_bit;
+ int hyper_bit;
+ int super_bit;
+ int alt_bit;
+ int mode_bit;
+};
+
+static void
+x_reset_modifier_mapping (struct device *d)
+{
+ Display *display = DEVICE_X_DISPLAY (d);
+ struct x_device *xd = DEVICE_X_DATA (d);
+ int modifier_index, modifier_key, column, mkpm;
+ int warned_about_overlapping_modifiers = 0;
+ int warned_about_predefined_modifiers = 0;
+ int warned_about_duplicate_modifiers = 0;
+ int meta_bit = 0;
+ int hyper_bit = 0;
+ int super_bit = 0;
+ int alt_bit = 0;
+ int mode_bit = 0;
+
+ xd->lock_interpretation = 0;
+
+ if (xd->x_modifier_keymap)
+ XFreeModifiermap (xd->x_modifier_keymap);
+
+ x_reset_key_mapping (d);
+
+ xd->x_modifier_keymap = XGetModifierMapping (display);
+
+ /* Boy, I really wish C had local functions...
+ */
+
+ /* The call to warn_when_safe must be on the same line as the string or
+ make-msgfile won't pick it up properly (the newline doesn't confuse
+ it, but the backslash does). */
+
+#define modwarn(name,old,other) \
+ warn_when_safe (Qkey_mapping, Qwarning, "XEmacs: %s (0x%x) generates %s, which is generated by %s.", \
+ name, code, index_to_name (old), other), \
+ warned_about_overlapping_modifiers = 1
+
+#define modbarf(name,other) \
+ warn_when_safe (Qkey_mapping, Qwarning, "XEmacs: %s (0x%x) generates %s, which is nonsensical.", \
+ name, code, other), \
+ warned_about_predefined_modifiers = 1
+
+#define check_modifier(name,mask) \
+ if ((1<<modifier_index) != mask) \
+ warn_when_safe (Qkey_mapping, Qwarning, "XEmacs: %s (0x%x) generates %s, which is nonsensical.", \
+ name, code, index_to_name (modifier_index)), \
+ warned_about_predefined_modifiers = 1
+
+#define store_modifier(name,old) \
+ if (old && old != modifier_index) \
+ warn_when_safe (Qkey_mapping, Qwarning, "XEmacs: %s (0x%x) generates both %s and %s, which is nonsensical.",\
+ name, code, index_to_name (old), \
+ index_to_name (modifier_index)), \
+ warned_about_duplicate_modifiers = 1; \
+ if (modifier_index == ShiftMapIndex) modbarf (name,"ModShift"); \
+ else if (modifier_index == LockMapIndex) modbarf (name,"ModLock"); \
+ else if (modifier_index == ControlMapIndex) modbarf (name,"ModControl"); \
+ else if (sym == XK_Mode_switch) \
+ mode_bit = modifier_index; /* Mode_switch is special, see below... */ \
+ else if (modifier_index == meta_bit && old != meta_bit) \
+ modwarn (name, meta_bit, "Meta"); \
+ else if (modifier_index == super_bit && old != super_bit) \
+ modwarn (name, super_bit, "Super"); \
+ else if (modifier_index == hyper_bit && old != hyper_bit) \
+ modwarn (name, hyper_bit, "Hyper"); \
+ else if (modifier_index == alt_bit && old != alt_bit) \
+ modwarn (name, alt_bit, "Alt"); \
+ else \
+ old = modifier_index;
+
+ mkpm = xd->x_modifier_keymap->max_keypermod;
+ for (modifier_index = 0; modifier_index < 8; modifier_index++)
+ for (modifier_key = 0; modifier_key < mkpm; modifier_key++) {
+ KeySym last_sym = 0;
+ for (column = 0; column < 4; column += 2) {
+ KeyCode code = xd->x_modifier_keymap->modifiermap[modifier_index * mkpm
+ + modifier_key];
+ KeySym sym = (code ? XKeycodeToKeysym (display, code, column) : 0);
+ if (sym == last_sym) continue;
+ last_sym = sym;
+ switch (sym) {
+ case XK_Mode_switch:store_modifier ("Mode_switch", mode_bit); break;
+ case XK_Meta_L: store_modifier ("Meta_L", meta_bit); break;
+ case XK_Meta_R: store_modifier ("Meta_R", meta_bit); break;
+ case XK_Super_L: store_modifier ("Super_L", super_bit); break;
+ case XK_Super_R: store_modifier ("Super_R", super_bit); break;
+ case XK_Hyper_L: store_modifier ("Hyper_L", hyper_bit); break;
+ case XK_Hyper_R: store_modifier ("Hyper_R", hyper_bit); break;
+ case XK_Alt_L: store_modifier ("Alt_L", alt_bit); break;
+ case XK_Alt_R: store_modifier ("Alt_R", alt_bit); break;
+ case XK_Control_L: check_modifier ("Control_L", ControlMask); break;
+ case XK_Control_R: check_modifier ("Control_R", ControlMask); break;
+ case XK_Shift_L: check_modifier ("Shift_L", ShiftMask); break;
+ case XK_Shift_R: check_modifier ("Shift_R", ShiftMask); break;
+ case XK_Shift_Lock: check_modifier ("Shift_Lock", LockMask);
+ xd->lock_interpretation = XK_Shift_Lock; break;
+ case XK_Caps_Lock: check_modifier ("Caps_Lock", LockMask);
+ xd->lock_interpretation = XK_Caps_Lock; break;
+
+ /* It probably doesn't make any sense for a modifier bit to be
+ assigned to a key that is not one of the above, but OpenWindows
+ assigns modifier bits to a couple of random function keys for
+ no reason that I can discern, so printing a warning here would
+ be annoying. */
+ }
+ }
+ }
+#undef store_modifier
+#undef check_modifier
+#undef modwarn
+#undef modbarf
+
+ /* If there was no Meta key, then try using the Alt key instead.
+ If there is both a Meta key and an Alt key, then the Alt key
+ is not disturbed and remains an Alt key. */
+ if (! meta_bit && alt_bit)
+ meta_bit = alt_bit, alt_bit = 0;
+
+ /* mode_bit overrides everything, since it's processed down inside of
+ XLookupString() instead of by us. If Meta and Mode_switch both
+ generate the same modifier bit (which is an error), then we don't
+ interpret that bit as Meta, because we can't make XLookupString()
+ not interpret it as Mode_switch; and interpreting it as both would
+ be totally wrong. */
+ if (mode_bit)
+ {
+ const char *warn = 0;
+ if (mode_bit == meta_bit) warn = "Meta", meta_bit = 0;
+ else if (mode_bit == hyper_bit) warn = "Hyper", hyper_bit = 0;
+ else if (mode_bit == super_bit) warn = "Super", super_bit = 0;
+ else if (mode_bit == alt_bit) warn = "Alt", alt_bit = 0;
+ if (warn)
+ {
+ warn_when_safe
+ (Qkey_mapping, Qwarning,
+ "XEmacs: %s is being used for both Mode_switch and %s.",
+ index_to_name (mode_bit), warn),
+ warned_about_overlapping_modifiers = 1;
+ }
+ }
+#undef index_to_name
+
+ xd->MetaMask = (meta_bit ? (1 << meta_bit) : 0);
+ xd->HyperMask = (hyper_bit ? (1 << hyper_bit) : 0);
+ xd->SuperMask = (super_bit ? (1 << super_bit) : 0);
+ xd->AltMask = (alt_bit ? (1 << alt_bit) : 0);
+ xd->ModeMask = (mode_bit ? (1 << mode_bit) : 0); /* unused */
+
+
+ if (warned_about_overlapping_modifiers)
+ warn_when_safe (Qkey_mapping, Qwarning, "\n"
+" Two distinct modifier keys (such as Meta and Hyper) cannot generate\n"
+" the same modifier bit, because Emacs won't be able to tell which\n"
+" modifier was actually held down when some other key is pressed. It\n"
+" won't be able to tell Meta-x and Hyper-x apart, for example. Change\n"
+" one of these keys to use some other modifier bit. If you intend for\n"
+" these keys to have the same behavior, then change them to have the\n"
+" same keysym as well as the same modifier bit.");
+
+ if (warned_about_predefined_modifiers)
+ warn_when_safe (Qkey_mapping, Qwarning, "\n"
+" The semantics of the modifier bits ModShift, ModLock, and ModControl\n"
+" are predefined. It does not make sense to assign ModControl to any\n"
+" keysym other than Control_L or Control_R, or to assign any modifier\n"
+" bits to the \"control\" keysyms other than ModControl. You can't\n"
+" turn a \"control\" key into a \"meta\" key (or vice versa) by simply\n"
+" assigning the key a different modifier bit. You must also make that\n"
+" key generate an appropriate keysym (Control_L, Meta_L, etc).");
+
+ /* No need to say anything more for warned_about_duplicate_modifiers. */
+
+ if (warned_about_overlapping_modifiers || warned_about_predefined_modifiers)
+ warn_when_safe (Qkey_mapping, Qwarning, "\n"
+" The meanings of the modifier bits Mod1 through Mod5 are determined\n"
+" by the keysyms used to control those bits. Mod1 does NOT always\n"
+" mean Meta, although some non-ICCCM-compliant programs assume that.");
+}
+
+void
+x_init_modifier_mapping (struct device *d)
+{
+ struct x_device *xd = DEVICE_X_DATA (d);
+ xd->x_keysym_map_hash_table = Qnil;
+ xd->x_keysym_map = NULL;
+ xd->x_modifier_keymap = NULL;
+ x_reset_modifier_mapping (d);
+}
+
+static int
+x_key_is_modifier_p (KeyCode keycode, struct device *d)
+{
+ struct x_device *xd = DEVICE_X_DATA (d);
+ KeySym *syms;
+ int i;
+
+ if (keycode < xd->x_keysym_map_min_code ||
+ keycode > xd->x_keysym_map_max_code)
+ return 0;
+
+ syms = &xd->x_keysym_map [(keycode - xd->x_keysym_map_min_code) *
+ xd->x_keysym_map_keysyms_per_code];
+ for (i = 0; i < xd->x_keysym_map_keysyms_per_code; i++)
+ if (IsModifierKey (syms [i]) ||
+ syms [i] == XK_Mode_switch) /* why doesn't IsModifierKey count this? */
+ return 1;
+ return 0;
+}
+
+/* key-handling code is always ugly. It just ends up working out
+ that way.
+
+ Here are some pointers:
+
+ -- DOWN_MASK indicates which modifiers should be treated as "down"
+ when the corresponding upstroke happens. It gets reset for
+ a particular modifier when that modifier goes up, and reset
+ for all modifiers when a non-modifier key is pressed. Example:
+
+ I press Control-A-Shift and then release Control-A-Shift.
+ I want the Shift key to be sticky but not the Control key.
+
+ -- LAST_DOWNKEY and RELEASE_TIME are used to keep track of
+ auto-repeat -- see below.
+
+ -- If a modifier key is sticky, I can unstick it by pressing
+ the modifier key again. */
+
+static void
+x_handle_sticky_modifiers (XEvent *ev, struct device *d)
+{
+ struct x_device *xd;
+ KeyCode keycode;
+ int type;
+
+ if (!modifier_keys_are_sticky) /* Optimize for non-sticky modifiers */
+ return;
+
+ xd = DEVICE_X_DATA (d);
+ keycode = ev->xkey.keycode;
+ type = ev->type;
+
+ if (keycode < xd->x_keysym_map_min_code ||
+ keycode > xd->x_keysym_map_max_code)
+ return;
+
+ if (! ((type == KeyPress || type == KeyRelease) &&
+ x_key_is_modifier_p (keycode, d)))
+ { /* Not a modifier key */
+ Bool key_event_p = (type == KeyPress || type == KeyRelease);
+
+ if (type == ButtonPress
+ || (type == KeyPress
+ && ((xd->last_downkey
+ && ((keycode != xd->last_downkey
+ || ev->xkey.time != xd->release_time)))
+ || (INTP (Vmodifier_keys_sticky_time)
+ && ev->xkey.time
+ > (xd->modifier_release_time
+ + XINT (Vmodifier_keys_sticky_time))))))
+ {
+ xd->need_to_add_mask = 0;
+ xd->last_downkey = 0;
+ }
+ else if (type == KeyPress && !xd->last_downkey)
+ xd->last_downkey = keycode;
+
+ if (type == KeyPress)
+ xd->release_time = 0;
+ if (type == KeyPress || type == ButtonPress)
+ {
+ xd->down_mask = 0;
+ xd->modifier_release_time = 0;
+ }
+
+ if (key_event_p)
+ ev->xkey.state |= xd->need_to_add_mask;
+ else
+ ev->xbutton.state |= xd->need_to_add_mask;
+
+ if (type == KeyRelease && keycode == xd->last_downkey)
+ /* If I hold press-and-release the Control key and then press
+ and hold down the right arrow, I want it to auto-repeat
+ Control-Right. On the other hand, if I do the same but
+ manually press the Right arrow a bunch of times, I want
+ to see one Control-Right and then a bunch of Rights.
+ This means that we need to distinguish between an
+ auto-repeated key and a key pressed and released a bunch
+ of times.
+
+ Naturally, the designers of the X spec didn't see fit
+ to provide an obvious way to distinguish these cases.
+ So we assume that if the release and the next press
+ occur at the same time, the key was actually auto-
+ repeated. Under Open-Windows, at least, this works. */
+ xd->modifier_release_time = xd->release_time
+ = key_event_p ? ev->xkey.time : ev->xbutton.time;
+ }
+ else /* Modifier key pressed */
+ {
+ int i;
+ KeySym *syms = &xd->x_keysym_map [(keycode - xd->x_keysym_map_min_code) *
+ xd->x_keysym_map_keysyms_per_code];
+
+ /* If a non-modifier key was pressed in the middle of a bunch
+ of modifiers, then it unsticks all the modifiers that were
+ previously pressed. We cannot unstick the modifiers until
+ now because we want to check for auto-repeat of the
+ non-modifier key. */
+
+ if (xd->last_downkey)
+ {
+ xd->last_downkey = 0;
+ xd->need_to_add_mask = 0;
+ }
+
+ if (xd->modifier_release_time
+ && INTP (Vmodifier_keys_sticky_time)
+ && (ev->xkey.time
+ > xd->modifier_release_time + XINT (Vmodifier_keys_sticky_time)))
+ {
+ xd->need_to_add_mask = 0;
+ xd->down_mask = 0;
+ }
+
+#define FROB(mask) \
+do { \
+ if (type == KeyPress) \
+ { \
+ /* If modifier key is already sticky, \
+ then unstick it. Note that we do \
+ not test down_mask to deal with the \
+ unlikely but possible case that the \
+ modifier key auto-repeats. */ \
+ if (xd->need_to_add_mask & mask) \
+ { \
+ xd->need_to_add_mask &= ~mask; \
+ xd->down_mask &= ~mask; \
+ } \
+ else \
+ xd->down_mask |= mask; \
+ } \
+ else \
+ { \
+ if (xd->down_mask & mask) \
+ { \
+ xd->down_mask &= ~mask; \
+ xd->need_to_add_mask |= mask; \
+ } \
+ } \
+ xd->modifier_release_time = ev->xkey.time; \
+} while (0)
+
+ for (i = 0; i < xd->x_keysym_map_keysyms_per_code; i++)
+ switch (syms[i])
+ {
+ case XK_Control_L: case XK_Control_R: FROB (ControlMask); break;
+ case XK_Shift_L: case XK_Shift_R: FROB (ShiftMask); break;
+ case XK_Meta_L: case XK_Meta_R: FROB (xd->MetaMask); break;
+ case XK_Super_L: case XK_Super_R: FROB (xd->SuperMask); break;
+ case XK_Hyper_L: case XK_Hyper_R: FROB (xd->HyperMask); break;
+ case XK_Alt_L: case XK_Alt_R: FROB (xd->AltMask); break;
+ }
+ }
+#undef FROB
+}
+
+static void
+clear_sticky_modifiers (struct device *d)
+{
+ struct x_device *xd = DEVICE_X_DATA (d);
+
+ xd->need_to_add_mask = 0;
+ xd->last_downkey = 0;
+ xd->release_time = 0;
+ xd->down_mask = 0;
+}
+
+static int
+keysym_obeys_caps_lock_p (KeySym sym, struct device *d)
+{
+ struct x_device *xd = DEVICE_X_DATA (d);
+ /* Eeeeevil hack. Don't apply Caps_Lock to things that aren't alphabetic
+ characters, where "alphabetic" means something more than simply A-Z.
+ That is, if Caps_Lock is down, typing ESC doesn't produce Shift-ESC.
+ But if shift-lock is down, then it does. */
+ if (xd->lock_interpretation == XK_Shift_Lock)
+ return 1;
+
+ return
+ ((sym >= XK_A) && (sym <= XK_Z)) ||
+ ((sym >= XK_a) && (sym <= XK_z)) ||
+ ((sym >= XK_Agrave) && (sym <= XK_Odiaeresis)) ||
+ ((sym >= XK_agrave) && (sym <= XK_odiaeresis)) ||
+ ((sym >= XK_Ooblique) && (sym <= XK_Thorn)) ||
+ ((sym >= XK_oslash) && (sym <= XK_thorn));
+}
+
+/* called from EmacsFrame.c (actually from Xt itself) when a
+ MappingNotify event is received. In its infinite wisdom, Xt
+ decided that Xt event handlers never get MappingNotify events.
+ O'Reilly Xt Programming Manual 9.1.2 says:
+
+ MappingNotify is automatically handled by Xt, so it isn't passed
+ to event handlers and you don't need to worry about it.
+
+ Of course, we DO worry about it, so we need a special translation. */
+void
+emacs_Xt_mapping_action (Widget w, XEvent* event)
+{
+ struct device *d = get_device_from_display (event->xany.display);
+
+ if (DEVICE_X_BEING_DELETED (d))
+ return;
+#if 0
+ /* nyet. Now this is handled by Xt. */
+ XRefreshKeyboardMapping (&event->xmapping);
+#endif
+ /* xmodmap generates about a billion MappingKeyboard events, followed
+ by a single MappingModifier event, so it might be worthwhile to
+ take extra MappingKeyboard events out of the queue before requesting
+ the current keymap from the server. */
+ switch (event->xmapping.request)
+ {
+ case MappingKeyboard: x_reset_key_mapping (d); break;
+ case MappingModifier: x_reset_modifier_mapping (d); break;
+ case MappingPointer: /* Do something here? */ break;
+ default: ABORT();
+ }
+}
+
+\f
+/************************************************************************/
+/* X to Emacs event conversion */
+/************************************************************************/
+
+static Lisp_Object
+x_keysym_to_emacs_keysym (KeySym keysym, int simple_p)
+{
+ char *name;
+ if (keysym >= XK_exclam && keysym <= XK_asciitilde)
+ /* We must assume that the X keysym numbers for the ASCII graphic
+ characters are the same as their ASCII codes. */
+ return make_char (keysym);
+
+ switch (keysym)
+ {
+ /* These would be handled correctly by the default case, but by
+ special-casing them here we don't garbage a string or call
+ intern(). */
+ case XK_BackSpace: return QKbackspace;
+ case XK_Tab: return QKtab;
+ case XK_Linefeed: return QKlinefeed;
+ case XK_Return: return QKreturn;
+ case XK_Escape: return QKescape;
+ case XK_space: return QKspace;
+ case XK_Delete: return QKdelete;
+ case 0: return Qnil;
+ default:
+ if (simple_p) return Qnil;
+ /* !!#### not Mule-ized */
+ name = XKeysymToString (keysym);
+ if (!name || !name[0])
+ /* This happens if there is a mismatch between the Xlib of
+ XEmacs and the Xlib of the X server...
+
+ Let's hard-code in some knowledge of common keysyms introduced
+ in recent X11 releases. Snarfed from X11/keysymdef.h
+
+ Probably we should add some stuff here for X11R6. */
+ switch (keysym)
+ {
+ case 0xFF95: return KEYSYM ("kp-home");
+ case 0xFF96: return KEYSYM ("kp-left");
+ case 0xFF97: return KEYSYM ("kp-up");
+ case 0xFF98: return KEYSYM ("kp-right");
+ case 0xFF99: return KEYSYM ("kp-down");
+ case 0xFF9A: return KEYSYM ("kp-prior");
+ case 0xFF9B: return KEYSYM ("kp-next");
+ case 0xFF9C: return KEYSYM ("kp-end");
+ case 0xFF9D: return KEYSYM ("kp-begin");
+ case 0xFF9E: return KEYSYM ("kp-insert");
+ case 0xFF9F: return KEYSYM ("kp-delete");
+
+ case 0x1005FF10: return KEYSYM ("SunF36"); /* labeled F11 */
+ case 0x1005FF11: return KEYSYM ("SunF37"); /* labeled F12 */
+ default:
+ {
+ char buf [64];
+ sprintf (buf, "unknown-keysym-0x%X", (int) keysym);
+ return KEYSYM (buf);
+ }
+ }
+ /* If it's got a one-character name, that's good enough. */
+ if (!name[1])
+ return make_char (name[0]);
+
+ /* If it's in the "Keyboard" character set, downcase it.
+ The case of those keysyms is too totally random for us to
+ force anyone to remember them.
+ The case of the other character sets is significant, however.
+ */
+ if ((((unsigned int) keysym) & (~0x1FF)) == ((unsigned int) 0xFE00))
+ {
+ char buf [255];
+ char *s1, *s2;
+ for (s1 = name, s2 = buf; *s1; s1++, s2++) {
+ if (*s1 == '_') {
+ *s2 = '-';
+ } else {
+ *s2 = tolower (* (unsigned char *) s1);
+ }
+ }
+ *s2 = 0;
+ return KEYSYM (buf);
+ }
+ return KEYSYM (name);
+ }
+}
+
+static Lisp_Object
+x_to_emacs_keysym (XKeyPressedEvent *event, int simple_p)
+ /* simple_p means don't try too hard (ASCII only) */
+{
+ KeySym keysym = 0;
+
+#ifdef HAVE_XIM
+ int len;
+ /* Some implementations of XmbLookupString don't return
+ XBufferOverflow correctly, so increase the size of the xim input
+ buffer from 64 to the more reasonable size 513, as Emacs has done.
+ From Kenichi Handa. */
+ char buffer[513];
+ char *bufptr = buffer;
+ int bufsiz = sizeof (buffer);
+ Status status;
+#ifdef XIM_XLIB
+ XIC xic = FRAME_X_XIC (x_any_window_to_frame
+ (get_device_from_display (event->display),
+ event->window));
+#endif /* XIM_XLIB */
+#endif /* HAVE_XIM */
+
+ /* We use XLookupString if we're not using XIM, or are using
+ XIM_XLIB but input context creation failed. */
+#if ! (defined (HAVE_XIM) && defined (XIM_MOTIF))
+#if defined (HAVE_XIM) && defined (XIM_XLIB)
+ if (!xic)
+#endif /* XIM_XLIB */
+ {
+ /* Apparently it's necessary to specify a dummy here (rather
+ than passing in 0) to avoid crashes on German IRIX */
+ char dummy[256];
+ XLookupString (event, dummy, 200, &keysym, 0);
+ return (IsModifierKey (keysym) || keysym == XK_Mode_switch )
+ ? Qnil : x_keysym_to_emacs_keysym (keysym, simple_p);
+ }
+#endif /* ! XIM_MOTIF */
+
+#ifdef HAVE_XIM
+ Lookup_String: /* Come-From XBufferOverflow */
+#ifdef XIM_MOTIF
+ len = XmImMbLookupString (XtWindowToWidget (event->display, event->window),
+ event, bufptr, bufsiz, &keysym, &status);
+#else /* XIM_XLIB */
+ if (xic)
+ len = XmbLookupString (xic, event, bufptr, bufsiz, &keysym, &status);
+#endif /* HAVE_XIM */
+
+#ifdef DEBUG_XEMACS
+ if (debug_x_events > 0)
+ {
+ stderr_out (" status=");
+#define print_status_when(S) if (status == S) stderr_out (#S)
+ print_status_when (XLookupKeySym);
+ print_status_when (XLookupBoth);
+ print_status_when (XLookupChars);
+ print_status_when (XLookupNone);
+ print_status_when (XBufferOverflow);
+
+ if (status == XLookupKeySym || status == XLookupBoth)
+ stderr_out (" keysym=%s", XKeysymToString (keysym));
+ if (status == XLookupChars || status == XLookupBoth)
+ {
+ if (len != 1)
+ {
+ int j;
+ stderr_out (" chars=\"");
+ for (j=0; j<len; j++)
+ stderr_out ("%c", bufptr[j]);
+ stderr_out ("\"");
+ }
+ else if (bufptr[0] <= 32 || bufptr[0] >= 127)
+ stderr_out (" char=0x%x", bufptr[0]);
+ else
+ stderr_out (" char=%c", bufptr[0]);
+ }
+ stderr_out ("\n");
+ }
+#endif /* DEBUG_XEMACS */
+
+ switch (status)
+ {
+ case XLookupKeySym:
+ case XLookupBoth:
+ return (IsModifierKey (keysym) || keysym == XK_Mode_switch )
+ ? Qnil : x_keysym_to_emacs_keysym (keysym, simple_p);
+
+ case XLookupChars:
+ {
+ /* Generate multiple emacs events */
+ struct device *d = get_device_from_display (event->display);
+ Emchar ch;
+ Lisp_Object instream, fb_instream;
+ Lstream *istr;
+ struct gcpro gcpro1, gcpro2;
+
+ fb_instream = make_fixed_buffer_input_stream (bufptr, len);
+
+ /* #### Use Fget_coding_system (Vcomposed_input_coding_system) */
+ instream =
+ make_decoding_input_stream (XLSTREAM (fb_instream),
+ Fget_coding_system (Qundecided));
+
+ istr = XLSTREAM (instream);
+
+ GCPRO2 (instream, fb_instream);
+ while ((ch = Lstream_get_emchar (istr)) != EOF)
+ {
+ Lisp_Object emacs_event = Fmake_event (Qnil, Qnil);
+ Lisp_Event *ev = XEVENT (emacs_event);
+ ev->channel = DEVICE_CONSOLE (d);
+ ev->event_type = key_press_event;
+ ev->timestamp = event->time;
+ ev->event.key.modifiers = 0;
+ ev->event.key.keysym = make_char (ch);
+ enqueue_Xt_dispatch_event (emacs_event);
+ }
+ Lstream_close (istr);
+ UNGCPRO;
+ Lstream_delete (istr);
+ Lstream_delete (XLSTREAM (fb_instream));
+ return Qnil;
+ }
+ case XLookupNone: return Qnil;
+ case XBufferOverflow:
+ bufptr = (char *) alloca (len+1);
+ bufsiz = len+1;
+ goto Lookup_String;
+ }
+ return Qnil; /* not reached */
+#endif /* HAVE_XIM */
+}
+
+static void
+set_last_server_timestamp (struct device *d, XEvent *x_event)
+{
+ Time t;
+ switch (x_event->type)
+ {
+ case KeyPress:
+ case KeyRelease: t = x_event->xkey.time; break;
+ case ButtonPress:
+ case ButtonRelease: t = x_event->xbutton.time; break;
+ case EnterNotify:
+ case LeaveNotify: t = x_event->xcrossing.time; break;
+ case MotionNotify: t = x_event->xmotion.time; break;
+ case PropertyNotify: t = x_event->xproperty.time; break;
+ case SelectionClear: t = x_event->xselectionclear.time; break;
+ case SelectionRequest: t = x_event->xselectionrequest.time; break;
+ case SelectionNotify: t = x_event->xselection.time; break;
+ default: return;
+ }
+ DEVICE_X_LAST_SERVER_TIMESTAMP (d) = t;
+}
+
+static int
+x_event_to_emacs_event (XEvent *x_event, Lisp_Event *emacs_event)
+{
+ Display *display = x_event->xany.display;
+ struct device *d = get_device_from_display (display);
+ struct x_device *xd = DEVICE_X_DATA (d);
+
+ if (DEVICE_X_BEING_DELETED (d))
+ /* #### Uh, is this 0 correct? */
+ return 0;
+
+ set_last_server_timestamp (d, x_event);
+
+ switch (x_event->type)
+ {
+ case KeyRelease:
+ x_handle_sticky_modifiers (x_event, d);
+ return 0;
+
+ case KeyPress:
+ case ButtonPress:
+ case ButtonRelease:
+ {
+ int modifiers = 0;
+ int shift_p, lock_p;
+ Bool key_event_p = (x_event->type == KeyPress);
+ unsigned int *state =
+ key_event_p ? &x_event->xkey.state : &x_event->xbutton.state;
+
+ /* If this is a synthetic KeyPress or Button event, and the user
+ has expressed a disinterest in this security hole, then drop
+ it on the floor. */
+ if ((key_event_p
+ ? x_event->xkey.send_event
+ : x_event->xbutton.send_event)
+#ifdef EXTERNAL_WIDGET
+ /* ben: events get sent to an ExternalShell using XSendEvent.
+ This is not a perfect solution. */
+ && !FRAME_X_EXTERNAL_WINDOW_P
+ (x_any_window_to_frame (d, x_event->xany.window))
+#endif
+ && !x_allow_sendevents)
+ return 0;
+
+ DEVICE_X_MOUSE_TIMESTAMP (d) =
+ DEVICE_X_GLOBAL_MOUSE_TIMESTAMP (d) =
+ key_event_p ? x_event->xkey.time : x_event->xbutton.time;
+
+ x_handle_sticky_modifiers (x_event, d);
+
+ if (*state & ControlMask) modifiers |= XEMACS_MOD_CONTROL;
+ if (*state & xd->MetaMask) modifiers |= XEMACS_MOD_META;
+ if (*state & xd->SuperMask) modifiers |= XEMACS_MOD_SUPER;
+ if (*state & xd->HyperMask) modifiers |= XEMACS_MOD_HYPER;
+ if (*state & xd->AltMask) modifiers |= XEMACS_MOD_ALT;
+ {
+ int numero_de_botao = -1;
+
+ if (!key_event_p)
+ numero_de_botao = x_event->xbutton.button;
+
+ /* the button gets noted either in the button or the modifiers
+ field, but not both. */
+ if (numero_de_botao != 1 && (*state & Button1Mask))
+ modifiers |= XEMACS_MOD_BUTTON1;
+ if (numero_de_botao != 2 && (*state & Button2Mask))
+ modifiers |= XEMACS_MOD_BUTTON2;
+ if (numero_de_botao != 3 && (*state & Button3Mask))
+ modifiers |= XEMACS_MOD_BUTTON3;
+ if (numero_de_botao != 4 && (*state & Button4Mask))
+ modifiers |= XEMACS_MOD_BUTTON4;
+ if (numero_de_botao != 5 && (*state & Button5Mask))
+ modifiers |= XEMACS_MOD_BUTTON5;
+ }
+
+ /* Ignore the Caps_Lock key if:
+ - any other modifiers are down, so that Caps_Lock doesn't
+ turn C-x into C-X, which would suck.
+ - the event was a mouse event. */
+ if (modifiers || ! key_event_p)
+ *state &= (~LockMask);
+
+ shift_p = *state & ShiftMask;
+ lock_p = *state & LockMask;
+
+ if (shift_p || lock_p)
+ modifiers |= XEMACS_MOD_SHIFT;
+
+ if (key_event_p)
+ {
+ Lisp_Object keysym;
+ XKeyEvent *ev = &x_event->xkey;
+ /* This used to compute the frame from the given X window and
+ store it here, but we really don't care about the frame. */
+ emacs_event->channel = DEVICE_CONSOLE (d);
+ keysym = x_to_emacs_keysym (&x_event->xkey, 0);
+
+ /* If the emacs keysym is nil, then that means that the X
+ keysym was either a Modifier or NoSymbol, which
+ probably means that we're in the midst of reading a
+ Multi_key sequence, or a "dead" key prefix, or XIM
+ input. Ignore it. */
+ if (NILP (keysym))
+ return 0;
+
+ /* More Caps_Lock garbage: Caps_Lock should *only* add the
+ shift modifier to two-case keys (that is, A-Z and
+ related characters). So at this point (after looking up
+ the keysym) if the keysym isn't a dual-case alphabetic,
+ and if the caps lock key was down but the shift key
+ wasn't, then turn off the shift modifier. Gag barf */
+ /* #### type lossage: assuming equivalence of emacs and
+ X keysyms */
+ /* !!#### maybe fix for Mule */
+ if (lock_p && !shift_p &&
+ ! (CHAR_OR_CHAR_INTP (keysym)
+ && keysym_obeys_caps_lock_p
+ ((KeySym) XCHAR_OR_CHAR_INT (keysym), d)))
+ modifiers &= (~XEMACS_MOD_SHIFT);
+
+ /* If this key contains two distinct keysyms, that is,
+ "shift" generates a different keysym than the
+ non-shifted key, then don't apply the shift modifier
+ bit: it's implicit. Otherwise, if there would be no
+ other way to tell the difference between the shifted
+ and unshifted version of this key, apply the shift bit.
+ Non-graphics, like Backspace and F1 get the shift bit
+ in the modifiers slot. Neither the characters "a",
+ "A", "2", nor "@" normally have the shift bit set.
+ However, "F1" normally does. */
+ if (modifiers & XEMACS_MOD_SHIFT)
+ {
+ int Mode_switch_p = *state & xd->ModeMask;
+ KeySym bot = XLookupKeysym (ev, Mode_switch_p ? 2 : 0);
+ KeySym top = XLookupKeysym (ev, Mode_switch_p ? 3 : 1);
+ if (top && bot && top != bot)
+ modifiers &= ~XEMACS_MOD_SHIFT;
+ }
+ emacs_event->event_type = key_press_event;
+ emacs_event->timestamp = ev->time;
+ emacs_event->event.key.modifiers = modifiers;
+ emacs_event->event.key.keysym = keysym;
+ }
+ else /* Mouse press/release event */
+ {
+ XButtonEvent *ev = &x_event->xbutton;
+ struct frame *frame = x_window_to_frame (d, ev->window);
+
+ if (! frame)
+ return 0; /* not for us */
+ XSETFRAME (emacs_event->channel, frame);
+
+ emacs_event->event_type = (x_event->type == ButtonPress) ?
+ button_press_event : button_release_event;
+
+ emacs_event->event.button.modifiers = modifiers;
+ emacs_event->timestamp = ev->time;
+ emacs_event->event.button.button = ev->button;
+ emacs_event->event.button.x = ev->x;
+ emacs_event->event.button.y = ev->y;
+ /* because we don't seem to get a FocusIn event for button clicks
+ when a widget-glyph is selected we will assume that we want the
+ focus if a button gets pressed. */
+ if (x_event->type == ButtonPress)
+ handle_focus_event_1 (frame, 1);
+ }
+ }
+ break;
+
+ case MotionNotify:
+ {
+ XMotionEvent *ev = &x_event->xmotion;
+ struct frame *frame = x_window_to_frame (d, ev->window);
+ int modifiers = 0;
+ XMotionEvent event2;
+
+ if (! frame)
+ return 0; /* not for us */
+
+ /* We use MotionHintMask, so we will get only one motion event
+ until the next time we call XQueryPointer or the user
+ clicks the mouse. So call XQueryPointer now (meaning that
+ the event will be in sync with the server just before
+ Fnext_event() returns). If the mouse is still in motion,
+ then the server will immediately generate exactly one more
+ motion event, which will be on the queue waiting for us
+ next time around. */
+ event2 = *ev;
+ if (XQueryPointer (event2.display, event2.window,
+ &event2.root, &event2.subwindow,
+ &event2.x_root, &event2.y_root,
+ &event2.x, &event2.y,
+ &event2.state))
+ ev = &event2; /* only one structure copy */
+
+ DEVICE_X_MOUSE_TIMESTAMP (d) = ev->time;
+
+ XSETFRAME (emacs_event->channel, frame);
+ emacs_event->event_type = pointer_motion_event;
+ emacs_event->timestamp = ev->time;
+ emacs_event->event.motion.x = ev->x;
+ emacs_event->event.motion.y = ev->y;
+ if (ev->state & ShiftMask) modifiers |= XEMACS_MOD_SHIFT;
+ if (ev->state & ControlMask) modifiers |= XEMACS_MOD_CONTROL;
+ if (ev->state & xd->MetaMask) modifiers |= XEMACS_MOD_META;
+ if (ev->state & xd->SuperMask) modifiers |= XEMACS_MOD_SUPER;
+ if (ev->state & xd->HyperMask) modifiers |= XEMACS_MOD_HYPER;
+ if (ev->state & xd->AltMask) modifiers |= XEMACS_MOD_ALT;
+ if (ev->state & Button1Mask) modifiers |= XEMACS_MOD_BUTTON1;
+ if (ev->state & Button2Mask) modifiers |= XEMACS_MOD_BUTTON2;
+ if (ev->state & Button3Mask) modifiers |= XEMACS_MOD_BUTTON3;
+ if (ev->state & Button4Mask) modifiers |= XEMACS_MOD_BUTTON4;
+ if (ev->state & Button5Mask) modifiers |= XEMACS_MOD_BUTTON5;
+ /* Currently ignores Shift_Lock but probably shouldn't
+ (but it definitely should ignore Caps_Lock). */
+ emacs_event->event.motion.modifiers = modifiers;
+ }
+ break;
+
+ case ClientMessage:
+ {
+ /* Patch bogus TAKE_FOCUS messages from MWM; CurrentTime is
+ passed as the timestamp of the TAKE_FOCUS, which the ICCCM
+ explicitly prohibits. */
+ XClientMessageEvent *ev = &x_event->xclient;
+#ifdef HAVE_OFFIX_DND
+ if (DndIsDropMessage(x_event))
+ {
+ unsigned int state;
+ int modifiers = 0;
+ unsigned int button=0;
+ struct frame *frame = x_any_window_to_frame (d, ev->window);
+ Extbyte *data;
+ unsigned long size, dtype;
+ Lisp_Object l_type = Qnil, l_data = Qnil;
+ Lisp_Object l_dndlist = Qnil, l_item = Qnil;
+ struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
+
+ if (! frame)
+ return 0; /* not for us */
+
+ GCPRO4 (l_type, l_data, l_dndlist, l_item);
+ XSETFRAME (emacs_event->channel, frame);
+
+ emacs_event->event_type = misc_user_event;
+ emacs_event->timestamp = DEVICE_X_LAST_SERVER_TIMESTAMP (d);
+
+ state=DndDragButtons(x_event);
+
+ if (state & ShiftMask) modifiers |= XEMACS_MOD_SHIFT;
+ if (state & ControlMask) modifiers |= XEMACS_MOD_CONTROL;
+ if (state & xd->MetaMask) modifiers |= XEMACS_MOD_META;
+ if (state & xd->SuperMask) modifiers |= XEMACS_MOD_SUPER;
+ if (state & xd->HyperMask) modifiers |= XEMACS_MOD_HYPER;
+ if (state & xd->AltMask) modifiers |= XEMACS_MOD_ALT;
+ if (state & Button1Mask) modifiers |= XEMACS_MOD_BUTTON1;
+ if (state & Button2Mask) modifiers |= XEMACS_MOD_BUTTON2;
+ if (state & Button3Mask) modifiers |= XEMACS_MOD_BUTTON3;
+ if (state & Button4Mask) modifiers |= XEMACS_MOD_BUTTON4;
+ if (state & Button5Mask) modifiers |= XEMACS_MOD_BUTTON5;
+
+ if (state & Button5Mask) button = Button5;
+ if (state & Button4Mask) button = Button4;
+ if (state & Button3Mask) button = Button3;
+ if (state & Button2Mask) button = Button2;
+ if (state & Button1Mask) button = Button1;
+
+ emacs_event->event.misc.modifiers = modifiers;
+ emacs_event->event.misc.button = button;
+
+ DndDropCoordinates(FRAME_X_TEXT_WIDGET(frame), x_event,
+ &(emacs_event->event.misc.x),
+ &(emacs_event->event.misc.y) );
+
+ DndGetData(x_event,&data,&size);
+
+ dtype=DndDataType(x_event);
+ switch (dtype)
+ {
+ case DndFiles: /* null terminated strings, end null */
+ {
+ int len;
+ char *hurl = NULL;
+
+ while (*data)
+ {
+ len = strlen ((char*)data);
+ hurl = dnd_url_hexify_string ((char *)data, "file:");
+ l_item = make_string ((Bufbyte *)hurl, strlen (hurl));
+ l_dndlist = Fcons (l_item, l_dndlist);
+ data += len + 1;
+ xfree (hurl);
+ }
+ l_type = Qdragdrop_URL;
+ }
+ break;
+ case DndText:
+ l_type = Qdragdrop_MIME;
+ l_dndlist = list1 ( list3 ( list1 ( make_string ((Bufbyte *)"text/plain", 10) ),
+ make_string ((Bufbyte *)"8bit", 4),
+ make_ext_string ((Extbyte *)data,
+ strlen((char *)data),
+ Qctext) ) );
+ break;
+ case DndMIME:
+ /* we have to parse this in some way to extract
+ content-type and params (in the tm way) and
+ content encoding.
+ OR: if data is string, let tm do the job
+ if data is list[2], give the first two
+ to tm...
+ */
+ l_type = Qdragdrop_MIME;
+ l_dndlist = list1 ( make_ext_string ((Extbyte *)data,
+ strlen((char *)data),
+ Qbinary) );
+ break;
+ case DndFile:
+ case DndDir:
+ case DndLink:
+ case DndExe:
+ {
+ char *hurl = dnd_url_hexify_string ((char *) data, "file:");
+
+ l_dndlist = list1 ( make_string ((Bufbyte *)hurl,
+ strlen (hurl)) );
+ l_type = Qdragdrop_URL;
+
+ xfree (hurl);
+ }
+ break;
+ case DndURL:
+ /* as it is a real URL it should already be escaped
+ and escaping again will break them (cause % is unsave) */
+ l_dndlist = list1 ( make_ext_string ((Extbyte *)data,
+ strlen ((char *)data),
+ Qfile_name) );
+ l_type = Qdragdrop_URL;
+ break;
+ default: /* Unknown, RawData and any other type */
+ l_dndlist = list1 ( list3 ( list1 ( make_string ((Bufbyte *)"application/octet-stream", 24) ),
+ make_string ((Bufbyte *)"8bit", 4),
+ make_ext_string ((Extbyte *)data,
+ size,
+ Qbinary) ) );
+ l_type = Qdragdrop_MIME;
+ break;
+ }
+
+ emacs_event->event.misc.function = Qdragdrop_drop_dispatch;
+ emacs_event->event.misc.object = Fcons (l_type, l_dndlist);
+
+ UNGCPRO;
+
+ break;
+ }
+#endif /* HAVE_OFFIX_DND */
+ if (ev->message_type == DEVICE_XATOM_WM_PROTOCOLS (d)
+ && (Atom) (ev->data.l[0]) == DEVICE_XATOM_WM_TAKE_FOCUS (d)
+ && (Atom) (ev->data.l[1]) == 0)
+ {
+ ev->data.l[1] = DEVICE_X_LAST_SERVER_TIMESTAMP (d);
+ }
+ }
+ /* fall through */
+
+ default: /* it's a magic event */
+ {
+ struct frame *frame;
+ Window w;
+ XEvent *x_event_copy = &emacs_event->event.magic.underlying_x_event;
+
+#define FROB(event_member, window_member) \
+ x_event_copy->event_member = x_event->event_member; \
+ w = x_event->event_member.window_member
+
+ switch (x_event->type)
+ {
+ case SelectionRequest: FROB(xselectionrequest, owner); break;
+ case SelectionClear: FROB(xselectionclear, window); break;
+ case SelectionNotify: FROB(xselection, requestor); break;
+ case PropertyNotify: FROB(xproperty, window); break;
+ case ClientMessage: FROB(xclient, window); break;
+ case ConfigureNotify: FROB(xconfigure, window); break;
+ case Expose:
+ case GraphicsExpose: FROB(xexpose, window); break;
+ case MapNotify:
+ case UnmapNotify: FROB(xmap, window); break;
+ case EnterNotify:
+ case LeaveNotify: FROB(xcrossing, window); break;
+ case FocusIn:
+ case FocusOut: FROB(xfocus, window); break;
+ case VisibilityNotify: FROB(xvisibility, window); break;
+ case CreateNotify: FROB(xcreatewindow, window); break;
+ default:
+ w = x_event->xany.window;
+ *x_event_copy = *x_event;
+ break;
+ }
+#undef FROB
+ frame = x_any_window_to_frame (d, w);
+
+ if (!frame)
+ return 0;
+
+ emacs_event->event_type = magic_event;
+ XSETFRAME (emacs_event->channel, frame);
+
+ break;
+ }
+ }
+ return 1;
+}
+
+
+\f
+/************************************************************************/
+/* magic-event handling */
+/************************************************************************/
+
+static void
+handle_focus_event_1 (struct frame *f, int in_p)
+{
+ handle_focus_event_2 (XtWindow (FRAME_X_TEXT_WIDGET (f)), f, in_p);
+}
+
+static void
+handle_focus_event_2 (Window win, struct frame *f, int in_p)
+{
+ /* Although this treats focus differently for all widgets (including
+ the frame) it seems to work ok. */
+ Widget needs_it = XtWindowToWidget (FRAME_X_DISPLAY (f), win);
+
+#if XtSpecificationRelease > 5
+ widget_with_focus = XtGetKeyboardFocusWidget (FRAME_X_TEXT_WIDGET (f));
+#endif
+#ifdef HAVE_XIM
+ XIM_focus_event (f, in_p);
+#endif /* HAVE_XIM */
+
+ /* On focus change, clear all memory of sticky modifiers
+ to avoid non-intuitive behavior. */
+ clear_sticky_modifiers (XDEVICE (FRAME_DEVICE (f)));
+
+ /* We don't want to handle the focus change now, because we might
+ be in an accept-process-output, sleep-for, or sit-for. So
+ we enqueue it.
+
+ Actually, we half handle it: we handle it as far as changing the
+ box cursor for redisplay, but we don't call any hooks or do any
+ select-frame stuff until after the sit-for.
+
+ Unfortunately native widgets break the model because they grab
+ the keyboard focus and nothing sets it back again. I cannot find
+ any reasonable way to do this elsewhere so we assert here that
+ the keyboard focus is on the emacs text widget. Menus and dialogs
+ do this in their selection callback, but we don't want that since
+ a button having focus is legitimate. An edit field having focus
+ is mandatory. Weirdly you get a FocusOut event when you click in
+ a widget-glyph but you don't get a corresponding FocusIn when you
+ click in the frame. Why is this? */
+ if (in_p
+#if XtSpecificationRelease > 5
+ && needs_it != widget_with_focus
+#endif
+ )
+ {
+ lw_set_keyboard_focus (FRAME_X_SHELL_WIDGET (f), needs_it);
+ }
+
+ /* If we are focusing on a native widget then record and exit. */
+ if (needs_it != FRAME_X_TEXT_WIDGET (f)) {
+ widget_with_focus = needs_it;
+ return;
+ }
+
+ /* We have the focus now. See comment in
+ emacs_Xt_handle_widget_losing_focus (). */
+ if (in_p)
+ widget_with_focus = NULL;
+
+ /* do the generic event-stream stuff. */
+ {
+ Lisp_Object frm;
+ Lisp_Object conser;
+ struct gcpro gcpro1;
+
+ XSETFRAME (frm, f);
+ conser = Fcons (frm, Fcons (FRAME_DEVICE (f), in_p ? Qt : Qnil));
+ GCPRO1 (conser);
+ emacs_handle_focus_change_preliminary (conser);
+ enqueue_magic_eval_event (emacs_handle_focus_change_final,
+ conser);
+ UNGCPRO;
+ }
+}
+
+/* Create a synthetic X focus event. */
+void
+enqueue_focus_event (Widget wants_it, Lisp_Object frame, int in_p)
+{
+ Lisp_Object emacs_event = Fmake_event (Qnil, Qnil);
+ Lisp_Event *ev = XEVENT (emacs_event);
+ XEvent *x_event = &ev->event.magic.underlying_x_event;
+
+ x_event->type = in_p ? FocusIn : FocusOut;
+ x_event->xfocus.window = XtWindow (wants_it);
+
+ ev->channel = frame;
+ ev->event_type = magic_event;
+
+ enqueue_Xt_dispatch_event (emacs_event);
+}
+
+/* The idea here is that when a widget glyph gets unmapped we don't
+ want the focus to stay with it if it has focus - because it may
+ well just get deleted next and then we have lost the focus until the
+ user does something. So handle_focus_event_1 records the widget
+ with keyboard focus when FocusOut is processed, and then, when a
+ widget gets unmapped, it calls this function to restore focus if
+ appropriate. */
+void emacs_Xt_handle_widget_losing_focus (struct frame* f, Widget losing_widget);
+void
+emacs_Xt_handle_widget_losing_focus (struct frame* f, Widget losing_widget)
+{
+ if (losing_widget == widget_with_focus)
+ {
+ handle_focus_event_1 (f, 1);
+ }
+}
+
+/* This is called from the external-widget code */
+
+void emacs_Xt_handle_focus_event (XEvent *event);
+void
+emacs_Xt_handle_focus_event (XEvent *event)
+{
+ struct device *d = get_device_from_display (event->xany.display);
+ struct frame *f;
+
+ if (DEVICE_X_BEING_DELETED (d))
+ return;
+
+ /*
+ * It's curious that we're using x_any_window_to_frame() instead
+ * of x_window_to_frame(). I don't know what the impact of this is.
+ */
+ f = x_any_window_to_frame (d, event->xfocus.window);
+ if (!f)
+ /* focus events are sometimes generated just before
+ a frame is destroyed. */
+ return;
+ handle_focus_event_1 (f, event->type == FocusIn);
+}
+
+/* both MapNotify and VisibilityNotify can cause this
+ JV is_visible has the same semantics as f->visible*/
+static void
+change_frame_visibility (struct frame *f, int is_visible)
+{
+ Lisp_Object frame;
+
+ XSETFRAME (frame, f);
+
+ if (!FRAME_VISIBLE_P (f) && is_visible)
+ {
+ FRAME_VISIBLE_P (f) = is_visible;
+ /* This improves the double flicker when uniconifying a frame
+ some. A lot of it is not showing a buffer which has changed
+ while the frame was iconified. To fix it further requires
+ the good 'ol double redisplay structure. */
+ MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f);
+ va_run_hook_with_args (Qmap_frame_hook, 1, frame);
+ }
+ else if (FRAME_VISIBLE_P (f) && !is_visible)
+ {
+ FRAME_VISIBLE_P (f) = 0;
+ va_run_hook_with_args (Qunmap_frame_hook, 1, frame);
+ }
+ else if (FRAME_VISIBLE_P (f) * is_visible < 0)
+ {
+ FRAME_VISIBLE_P(f) = - FRAME_VISIBLE_P(f);
+ if (FRAME_REPAINT_P(f))
+ MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f);
+ va_run_hook_with_args (Qmap_frame_hook, 1, frame);
+ }
+}
+
+static void
+handle_map_event (struct frame *f, XEvent *event)
+{
+ Lisp_Object frame;
+
+ XSETFRAME (frame, f);
+ if (event->type == MapNotify)
+ {
+ XWindowAttributes xwa;
+
+ /* Bleagh!!!!!! Apparently some window managers (e.g. MWM)
+ send synthetic MapNotify events when a window is first
+ created, EVEN IF IT'S CREATED ICONIFIED OR INVISIBLE.
+ Or something like that. We initially tried a different
+ solution below, but that ran into a different window-
+ manager bug.
+
+ It seems that the only reliable way is to treat a
+ MapNotify event as a "hint" that the window might or
+ might not be visible, and check explicitly. */
+
+ XGetWindowAttributes (event->xany.display, event->xmap.window,
+ &xwa);
+ if (xwa.map_state != IsViewable)
+ {
+ /* Calling Fframe_iconified_p is the only way we have to
+ correctly update FRAME_ICONIFIED_P */
+ Fframe_iconified_p (frame);
+ return;
+ }
+
+ FRAME_X_TOTALLY_VISIBLE_P (f) = 1;
+#if 0
+ /* Bleagh again!!!! We initially tried the following hack
+ around the MWM problem, but it turns out that TWM
+ has a race condition when you un-iconify, where it maps
+ the window and then tells the server that the window
+ is un-iconified. Usually, XEmacs wakes up between
+ those two occurrences, and thus thinks that un-iconified
+ windows are still iconified.
+
+ Ah, the joys of X. */
+
+ /* By Emacs definition, a frame that is iconified is not
+ visible. Marking a frame as visible will automatically cause
+ frame-iconified-p to return nil, regardless of whether the
+ frame is actually iconified. Therefore, we have to ignore
+ MapNotify events on iconified frames. (It's not obvious
+ to me why these are being sent, but it happens at startup
+ with frames that are initially iconified; perhaps they are
+ synthetic MapNotify events coming from the window manager.)
+ Note that `frame-iconified-p' queries the server
+ to determine whether the frame is currently iconified,
+ rather than consulting some internal (and likely
+ inaccurate) state flag. Therefore, ignoring the MapNotify
+ is correct. */
+ if (!FRAME_VISIBLE_P (f) && NILP (Fframe_iconified_p (frame)))
+#endif /* 0 */
+ change_frame_visibility (f, 1);
+ }
+ else
+ {
+ FRAME_X_TOTALLY_VISIBLE_P (f) = 0;
+ change_frame_visibility (f, 0);
+ /* Calling Fframe_iconified_p is the only way we have to
+ correctly update FRAME_ICONIFIED_P */
+ Fframe_iconified_p (frame);
+ }
+}
+
+static void
+handle_client_message (struct frame *f, XEvent *event)
+{
+ struct device *d = XDEVICE (FRAME_DEVICE (f));
+ Lisp_Object frame;
+
+ XSETFRAME (frame, f);
+
+ if (event->xclient.message_type == DEVICE_XATOM_WM_PROTOCOLS (d) &&
+ (Atom) (event->xclient.data.l[0]) == DEVICE_XATOM_WM_DELETE_WINDOW (d))
+ {
+ /* WM_DELETE_WINDOW is a misc-user event, but other ClientMessages,
+ such as WM_TAKE_FOCUS, are eval events. That's because delete-window
+ was probably executed with a mouse click, while the others could
+ have been sent as a result of mouse motion or some other implicit
+ action. (Call this a "heuristic"...) The reason for caring about
+ this is so that clicking on the close-box will make emacs prompt
+ using a dialog box instead of the minibuffer if there are unsaved
+ buffers.
+ */
+ enqueue_misc_user_event (frame, Qeval,
+ list3 (Qdelete_frame, frame, Qt));
+ }
+ else if (event->xclient.message_type == DEVICE_XATOM_WM_PROTOCOLS (d) &&
+ (Atom) event->xclient.data.l[0] == DEVICE_XATOM_WM_TAKE_FOCUS (d))
+ {
+ handle_focus_event_1 (f, 1);
+#if 0
+ /* If there is a dialog box up, focus on it.
+
+ #### Actually, we're raising it too, which is wrong. We should
+ #### just focus on it, but lwlib doesn't currently give us an
+ #### easy way to do that. This should be fixed.
+ */
+ unsigned long take_focus_timestamp = event->xclient.data.l[1];
+ Widget widget = lw_raise_all_pop_up_widgets ();
+ if (widget)
+ {
+ /* kludge: raise_all returns bottommost widget, but we really
+ want the topmost. So just raise it for now. */
+ XMapRaised (XtDisplay (widget), XtWindow (widget));
+ /* Grab the focus with the timestamp of the TAKE_FOCUS. */
+ XSetInputFocus (XtDisplay (widget), XtWindow (widget),
+ RevertToParent, take_focus_timestamp);
+ }
+#endif
+ }
+}
+
+/* #### I'm struggling to understand how the X event loop really works.
+ Here is the problem:
+
+ When widgets get mapped / changed etc the actual display updates
+ are done asynchronously via X events being processed - this
+ normally happens when XtAppProcessEvent() gets called. However, if
+ we are executing lisp code or even doing redisplay we won't
+ necessarily process X events for a very long time. This has the
+ effect of widgets only getting updated when XEmacs only goes into
+ idle, or some other event causes processing of the X event queue.
+
+ XtAppProcessEvent can get called from the following places:
+
+ emacs_Xt_next_event () - this is normal event processing, almost
+ any non-X event will take precedence and this means that we
+ cannot rely on it to do the right thing at the right time for
+ widget display.
+
+ drain_X_queue () - this happens when SIGIO gets tripped,
+ processing the event queue allows C-g to be checked for. It gets
+ called from emacs_Xt_event_pending_p ().
+
+ In order to solve this I have tried introducing a list primitive -
+ dispatch-non-command-events - which forces processing of X events
+ related to display. Unfortunately this has a number of problems,
+ one is that it is possible for event_stream_event_pending_p to
+ block for ever if there isn't actually an event. I guess this can
+ happen if we drop the synthetic event for reason. It also relies on
+ SIGIO processing which makes things rather fragile.
+
+ People have seen behaviour whereby XEmacs blocks until you move the
+ mouse. This seems to indicate that dispatch-non-command-events is
+ blocking. It may be that in a SIGIO world forcing SIGIO processing
+ does the wrong thing.
+*/
+static void
+emacs_Xt_force_event_pending (struct frame* f)
+{
+ XEvent event;
+
+ Display* dpy = DEVICE_X_DISPLAY (XDEVICE (FRAME_DEVICE (f)));
+ event.xclient.type = ClientMessage;
+ event.xclient.display = dpy;
+ event.xclient.message_type = XInternAtom (dpy, "BumpQueue", False);
+ event.xclient.format = 32;
+ event.xclient.window = 0;
+
+ /* Send the drop message */
+ XSendEvent(dpy, XtWindow (FRAME_X_SHELL_WIDGET (f)),
+ True, NoEventMask, &event);
+ /* We rely on SIGIO and friends to realise we have generated an
+ event. */
+}
+
+static void
+emacs_Xt_handle_magic_event (Lisp_Event *emacs_event)
+{
+ /* This function can GC */
+ XEvent *event = &emacs_event->event.magic.underlying_x_event;
+ struct frame *f = XFRAME (EVENT_CHANNEL (emacs_event));
+
+ if (!FRAME_LIVE_P (f) || DEVICE_X_BEING_DELETED (XDEVICE (FRAME_DEVICE (f))))
+ return;
+
+ switch (event->type)
+ {
+ case SelectionRequest:
+ x_handle_selection_request (&event->xselectionrequest);
+ break;
+
+ case SelectionClear:
+ x_handle_selection_clear (&event->xselectionclear);
+ break;
+
+ case SelectionNotify:
+ x_handle_selection_notify (&event->xselection);
+ break;
+
+ case PropertyNotify:
+ x_handle_property_notify (&event->xproperty);
+ break;
+
+ case Expose:
+ if (!check_for_ignored_expose (f, event->xexpose.x, event->xexpose.y,
+ event->xexpose.width, event->xexpose.height)
+ &&
+ !find_matching_subwindow (f, event->xexpose.x, event->xexpose.y,
+ event->xexpose.width, event->xexpose.height))
+ x_redraw_exposed_area (f, event->xexpose.x, event->xexpose.y,
+ event->xexpose.width, event->xexpose.height);
+ break;
+
+ case GraphicsExpose: /* This occurs when an XCopyArea's source area was
+ obscured or not available. */
+ x_redraw_exposed_area (f, event->xexpose.x, event->xexpose.y,
+ event->xexpose.width, event->xexpose.height);
+ break;
+
+ case MapNotify:
+ case UnmapNotify:
+ handle_map_event (f, event);
+ break;
+
+ case EnterNotify:
+ if (event->xcrossing.detail != NotifyInferior)
+ {
+ Lisp_Object frame;
+
+ XSETFRAME (frame, f);
+ /* FRAME_X_MOUSE_P (f) = 1; */
+ va_run_hook_with_args (Qmouse_enter_frame_hook, 1, frame);
+ }
+ break;
+
+ case LeaveNotify:
+ if (event->xcrossing.detail != NotifyInferior)
+ {
+ Lisp_Object frame;
+
+ XSETFRAME (frame, f);
+ /* FRAME_X_MOUSE_P (f) = 0; */
+ va_run_hook_with_args (Qmouse_leave_frame_hook, 1, frame);
+ }
+ break;
+
+ case FocusIn:
+ case FocusOut:
+
+#ifdef EXTERNAL_WIDGET
+ /* External widget lossage: Ben said:
+ YUCK. The only way to make focus changes work properly is to
+ completely ignore all FocusIn/FocusOut events and depend only
+ on notifications from the ExternalClient widget. */
+ if (FRAME_X_EXTERNAL_WINDOW_P (f))
+ break;
+#endif
+ handle_focus_event_2 (event->xfocus.window, f, event->type == FocusIn);
+ break;
+
+ case ClientMessage:
+ handle_client_message (f, event);
+ break;
+
+ case VisibilityNotify: /* window visibility has changed */
+ if (event->xvisibility.window == XtWindow (FRAME_X_SHELL_WIDGET (f)))
+ {
+ FRAME_X_TOTALLY_VISIBLE_P (f) =
+ (event->xvisibility.state == VisibilityUnobscured);
+ /* Note that the fvwm pager only sends VisibilityNotify when
+ changing pages. Is this all we need to do ? JV */
+ /* Nope. We must at least trigger a redisplay here.
+ Since this case seems similar to MapNotify, I've
+ factored out some code to change_frame_visibility().
+ This triggers the necessary redisplay and runs
+ (un)map-frame-hook. - dkindred@cs.cmu.edu */
+ /* Changed it again to support the tristate visibility flag */
+ change_frame_visibility (f, (event->xvisibility.state
+ != VisibilityFullyObscured) ? 1 : -1);
+ }
+ break;
+
+ case ConfigureNotify:
+#ifdef HAVE_XIM
+ XIM_SetGeometry (f);
+#endif
+ break;
+
+ case CreateNotify:
+ break;
+
+ default:
+ break;
+ }
+}
+
+\f
+/************************************************************************/
+/* timeout events */
+/************************************************************************/
+
+static int timeout_id_tick;
+
+/* Xt interval id's might not fit into an int (they're pointers, as it
+ happens), so we need to provide a conversion list. */
+
+/* pending_timeouts is a set (unordered), implemented as a stack.
+ completed_timeouts* is a queue. */
+static struct Xt_timeout
+{
+ int id;
+ XtIntervalId interval_id;
+ struct Xt_timeout *next;
+} *pending_timeouts, *completed_timeouts_head, *completed_timeouts_tail;
+
+static struct Xt_timeout_blocktype
+{
+ Blocktype_declare (struct Xt_timeout);
+} *the_Xt_timeout_blocktype;
+
+/* called by XtAppNextEvent() */
+static void
+Xt_timeout_callback (XtPointer closure, XtIntervalId *id)
+{
+ struct Xt_timeout *timeout = (struct Xt_timeout *) closure;
+ struct Xt_timeout *t2 = pending_timeouts;
+ /* Remove this one from the set of pending timeouts */
+ if (t2 == timeout)
+ pending_timeouts = pending_timeouts->next;
+ else
+ {
+ while (t2->next && t2->next != timeout) t2 = t2->next;
+ assert (t2->next);
+ t2->next = t2->next->next;
+ }
+ /* Add this one to the queue of completed timeouts */
+ timeout->next = NULL;
+ if (completed_timeouts_head)
+ completed_timeouts_tail->next = timeout;
+ else
+ completed_timeouts_head = timeout;
+ completed_timeouts_tail = timeout;
+}
+
+static int
+emacs_Xt_add_timeout (EMACS_TIME thyme)
+{
+ struct Xt_timeout *timeout = Blocktype_alloc (the_Xt_timeout_blocktype);
+ EMACS_TIME current_time;
+ int milliseconds;
+
+ timeout->id = timeout_id_tick++;
+ timeout->next = pending_timeouts;
+ pending_timeouts = timeout;
+ EMACS_GET_TIME (current_time);
+ EMACS_SUB_TIME (thyme, thyme, current_time);
+ milliseconds = EMACS_SECS (thyme) * 1000 +
+ EMACS_USECS (thyme) / 1000;
+ if (milliseconds < 1)
+ milliseconds = 1;
+ timeout->interval_id = XtAppAddTimeOut (Xt_app_con, milliseconds,
+ Xt_timeout_callback,
+ (XtPointer) timeout);
+ return timeout->id;
+}
+
+static void
+emacs_Xt_remove_timeout (int id)
+{
+ struct Xt_timeout *timeout, *t2;
+
+ timeout = NULL;
+
+ /* Find the timeout on the list of pending ones, if it's still there. */
+ if (pending_timeouts)
+ {
+ if (id == pending_timeouts->id)
+ {
+ timeout = pending_timeouts;
+ pending_timeouts = pending_timeouts->next;
+ }
+ else
+ {
+ t2 = pending_timeouts;
+ while (t2->next && t2->next->id != id) t2 = t2->next;
+ if ( t2->next) /*found it */
+ {
+ timeout = t2->next;
+ t2->next = t2->next->next;
+ }
+ }
+ /* if it was pending, we have removed it from the list */
+ if (timeout)
+ XtRemoveTimeOut (timeout->interval_id);
+ }
+
+ /* It could be that Xt_timeout_callback was already called but we didn't
+ convert into an Emacs event yet */
+ if (!timeout && completed_timeouts_head)
+ {
+ /* Thank God for code duplication! */
+ if (id == completed_timeouts_head->id)
+ {
+ timeout = completed_timeouts_head;
+ completed_timeouts_head = completed_timeouts_head->next;
+ /* this may not be necessary? */
+ if (!completed_timeouts_head) completed_timeouts_tail = NULL;
+ }
+ else
+ {
+ t2 = completed_timeouts_head;
+ while (t2->next && t2->next->id != id) t2 = t2->next;
+ if (t2->next) /* found it */
+ {
+ timeout = t2->next;
+ t2->next = t2->next->next;
+ if (!t2->next) completed_timeouts_tail = t2;
+ }
+ }
+ }
+
+ /* If we found the thing on the lists of timeouts,
+ and removed it, deallocate
+ */
+ if (timeout)
+ Blocktype_free (the_Xt_timeout_blocktype, timeout);
+}
+
+static void
+Xt_timeout_to_emacs_event (Lisp_Event *emacs_event)
+{
+ struct Xt_timeout *timeout = completed_timeouts_head;
+ assert (timeout);
+ completed_timeouts_head = completed_timeouts_head->next;
+ /* probably unnecessary */
+ if (!completed_timeouts_head) completed_timeouts_tail = NULL;
+ emacs_event->event_type = timeout_event;
+ /* timeout events have nil as channel */
+ emacs_event->timestamp = 0; /* #### wrong!! */
+ emacs_event->event.timeout.interval_id = timeout->id;
+ emacs_event->event.timeout.function = Qnil;
+ emacs_event->event.timeout.object = Qnil;
+ Blocktype_free (the_Xt_timeout_blocktype, timeout);
+}
+
+\f
+/************************************************************************/
+/* process and tty events */
+/************************************************************************/
+
+struct what_is_ready_closure
+{
+ int fd;
+ Lisp_Object what;
+ XtInputId id;
+};
+
+static Lisp_Object *filedesc_with_input;
+static struct what_is_ready_closure **filedesc_to_what_closure;
+
+static void
+init_what_input_once (void)
+{
+ int i;
+
+ filedesc_with_input = xnew_array (Lisp_Object, MAXDESC);
+ filedesc_to_what_closure =
+ xnew_array (struct what_is_ready_closure *, MAXDESC);
+
+ for (i = 0; i < MAXDESC; i++)
+ {
+ filedesc_to_what_closure[i] = 0;
+ filedesc_with_input[i] = Qnil;
+ }
+
+ process_events_occurred = 0;
+ tty_events_occurred = 0;
+}
+
+static void
+mark_what_as_being_ready (struct what_is_ready_closure *closure)
+{
+ if (NILP (filedesc_with_input[closure->fd]))
+ {
+ SELECT_TYPE temp_mask;
+ FD_ZERO (&temp_mask);
+ FD_SET (closure->fd, &temp_mask);
+ /* Check to make sure there's *really* input available.
+ Sometimes things seem to get confused and this gets called
+ for the tty fd when there's really only input available
+ on some process's fd. (It will subsequently get called
+ for that process's fd, so returning without setting any
+ flags will take care of it.) To see the problem, uncomment
+ the stderr_out below, turn NORMAL_QUIT_CHECK_TIMEOUT_MSECS
+ down to 25, do sh -c 'xemacs -nw -q -f shell 2>/tmp/log'
+ and press return repeatedly. (Seen under AIX & Linux.)
+ -dkindred@cs.cmu.edu */
+ if (!poll_fds_for_input (temp_mask))
+ {
+#if 0
+ stderr_out ("mark_what_as_being_ready: no input available (fd=%d)\n",
+ closure->fd);
+#endif
+ return;
+ }
+ filedesc_with_input[closure->fd] = closure->what;
+ if (PROCESSP (closure->what))
+ /* Don't increment this if the current process is already marked
+ * as having input. */
+ process_events_occurred++;
+ else
+ tty_events_occurred++;
+ }
+}
+
+static void
+Xt_what_callback (void *closure, int *source, XtInputId *id)
+{
+ /* If closure is 0, then we got a fake event from a signal handler.
+ The only purpose of this is to make XtAppProcessEvent() stop
+ blocking. */
+ if (closure)
+ mark_what_as_being_ready ((struct what_is_ready_closure *) closure);
+ else
+ {
+ fake_event_occurred++;
+ drain_signal_event_pipe ();
+ }
+}
+
+static void
+select_filedesc (int fd, Lisp_Object what)
+{
+ struct what_is_ready_closure *closure;
+
+ /* If somebody is trying to select something that's already selected
+ for, then something went wrong. The generic routines ought to
+ detect this and error before here. */
+ assert (!filedesc_to_what_closure[fd]);
+
+ closure = xnew (struct what_is_ready_closure);
+ closure->fd = fd;
+ closure->what = what;
+ closure->id =
+ XtAppAddInput (Xt_app_con, fd,
+ (XtPointer) (XtInputReadMask /* | XtInputExceptMask */),
+ Xt_what_callback, closure);
+ filedesc_to_what_closure[fd] = closure;
+}
+
+static void
+unselect_filedesc (int fd)
+{
+ struct what_is_ready_closure *closure = filedesc_to_what_closure[fd];
+
+ assert (closure);
+ if (!NILP (filedesc_with_input[fd]))
+ {
+ /* We are unselecting this process before we have drained the rest of
+ the input from it, probably from status_notify() in the command loop.
+ This can happen like so:
+
+ - We are waiting in XtAppNextEvent()
+ - Process generates output
+ - Process is marked as being ready
+ - Process dies, SIGCHLD gets generated before we return (!?)
+ It could happen I guess.
+ - sigchld_handler() marks process as dead
+ - Somehow we end up getting a new KeyPress event on the queue
+ at the same time (I'm really so sure how that happens but I'm
+ not sure it can't either so let's assume it can...).
+ - Key events have priority so we return that instead of the proc.
+ - Before dispatching the lisp key event we call status_notify()
+ - Which deselects the process that SIGCHLD marked as dead.
+
+ Thus we never remove it from _with_input and turn it into a lisp
+ event, so we need to do it here. But this does not mean that we're
+ throwing away the last block of output - status_notify() has already
+ taken care of running the proc filter or whatever.
+ */
+ filedesc_with_input[fd] = Qnil;
+ if (PROCESSP (closure->what))
+ {
+ assert (process_events_occurred > 0);
+ process_events_occurred--;
+ }
+ else
+ {
+ assert (tty_events_occurred > 0);
+ tty_events_occurred--;
+ }
+ }
+ XtRemoveInput (closure->id);
+ xfree (closure);
+ filedesc_to_what_closure[fd] = 0;
+}
+
+static void
+emacs_Xt_select_process (Lisp_Process *p)
+{
+ Lisp_Object process;
+ int infd = event_stream_unixoid_select_process (p);
+
+ XSETPROCESS (process, p);
+ select_filedesc (infd, process);
+}
+
+static void
+emacs_Xt_unselect_process (Lisp_Process *p)
+{
+ int infd = event_stream_unixoid_unselect_process (p);
+
+ unselect_filedesc (infd);
+}
+
+static USID
+emacs_Xt_create_stream_pair (void* inhandle, void* outhandle,
+ Lisp_Object* instream, Lisp_Object* outstream, int flags)
+{
+ USID u = event_stream_unixoid_create_stream_pair
+ (inhandle, outhandle, instream, outstream, flags);
+ if (u != USID_ERROR)
+ u = USID_DONTHASH;
+ return u;
+}
+
+static USID
+emacs_Xt_delete_stream_pair (Lisp_Object instream, Lisp_Object outstream)
+{
+ event_stream_unixoid_delete_stream_pair (instream, outstream);
+ return USID_DONTHASH;
+}
+
+/* This is called from GC when a process object is about to be freed.
+ If we've still got pointers to it in this file, we're gonna lose hard.
+ */
+void
+debug_process_finalization (Lisp_Process *p)
+{
+#if 0 /* #### */
+ int i;
+ Lisp_Object instr, outstr;
+
+ get_process_streams (p, &instr, &outstr);
+ /* if it still has fds, then it hasn't been killed yet. */
+ assert (NILP(instr));
+ assert (NILP(outstr));
+ /* Better not still be in the "with input" table; we know it's got no fds. */
+ for (i = 0; i < MAXDESC; i++)
+ {
+ Lisp_Object process = filedesc_fds_with_input [i];
+ assert (!PROCESSP (process) || XPROCESS (process) != p);
+ }
+#endif
+}
+
+static void
+Xt_process_to_emacs_event (Lisp_Event *emacs_event)
+{
+ int i;
+
+ assert (process_events_occurred > 0);
+
+ for (i = 0; i < MAXDESC; i++)
+ {
+ Lisp_Object process = filedesc_with_input[i];
+ if (PROCESSP (process))
+ {
+ filedesc_with_input[i] = Qnil;
+ process_events_occurred--;
+ /* process events have nil as channel */
+ emacs_event->event_type = process_event;
+ emacs_event->timestamp = 0; /* #### */
+ emacs_event->event.process.process = process;
+ return;
+ }
+ }
+ ABORT ();
+}
+
+static void
+emacs_Xt_select_console (struct console *con)
+{
+ Lisp_Object console;
+ int infd;
+
+ if (CONSOLE_X_P (con))
+ return; /* X consoles are automatically selected for when we
+ initialize them in Xt */
+ infd = event_stream_unixoid_select_console (con);
+ XSETCONSOLE (console, con);
+ select_filedesc (infd, console);
+}
+
+static void
+emacs_Xt_unselect_console (struct console *con)
+{
+ Lisp_Object console;
+ int infd;
+
+ if (CONSOLE_X_P (con))
+ return; /* X consoles are automatically selected for when we
+ initialize them in Xt */
+ infd = event_stream_unixoid_unselect_console (con);
+ XSETCONSOLE (console, con);
+ unselect_filedesc (infd);
+}
+
+/* read an event from a tty, if one is available. Returns non-zero
+ if an event was available. Note that when this function is
+ called, there should always be a tty marked as ready for input.
+ However, the input condition might actually be EOF, so there
+ may not really be any input available. (In this case,
+ read_event_from_tty_or_stream_desc() will arrange for the TTY device
+ to be deleted.) */
+
+static int
+Xt_tty_to_emacs_event (Lisp_Event *emacs_event)
+{
+ int i;
+
+ assert (tty_events_occurred > 0);
+ for (i = 0; i < MAXDESC; i++)
+ {
+ Lisp_Object console = filedesc_with_input[i];
+ if (CONSOLEP (console))
+ {
+ assert (tty_events_occurred > 0);
+ tty_events_occurred--;
+ filedesc_with_input[i] = Qnil;
+ if (read_event_from_tty_or_stream_desc
+ (emacs_event, XCONSOLE (console), i))
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+\f
+/************************************************************************/
+/* debugging functions to decipher an event */
+/************************************************************************/
+
+#ifdef DEBUG_XEMACS
+#include "xintrinsicp.h" /* only describe_event() needs this */
+#include <X11/Xproto.h> /* only describe_event() needs this */
+
+static void
+describe_event_window (Window window, Display *display)
+{
+ struct frame *f;
+ Widget w;
+ stderr_out (" window: 0x%lx", (unsigned long) window);
+ w = XtWindowToWidget (display, window);
+ if (w)
+ stderr_out (" %s", w->core.widget_class->core_class.class_name);
+ f = x_any_window_to_frame (get_device_from_display (display), window);
+ if (f)
+ {
+ char *buf = alloca_array (char, XSTRING_LENGTH (f->name) + 4);
+ sprintf (buf, " \"%s\"", XSTRING_DATA (f->name));
+ write_string_to_stdio_stream (stderr, 0, (Bufbyte *) buf, 0,
+ strlen (buf), Qterminal, 1);
+ }
+ stderr_out ("\n");
+}
+
+static const char *
+XEvent_mode_to_string (int mode)
+{
+ switch (mode)
+ {
+ case NotifyNormal: return "Normal";
+ case NotifyGrab: return "Grab";
+ case NotifyUngrab: return "Ungrab";
+ case NotifyWhileGrabbed: return "WhileGrabbed";
+ default: return "???";
+ }
+}
+
+static const char *
+XEvent_detail_to_string (int detail)
+{
+ switch (detail)
+ {
+ case NotifyAncestor: return "Ancestor";
+ case NotifyInferior: return "Inferior";
+ case NotifyNonlinear: return "Nonlinear";
+ case NotifyNonlinearVirtual: return "NonlinearVirtual";
+ case NotifyPointer: return "Pointer";
+ case NotifyPointerRoot: return "PointerRoot";
+ case NotifyDetailNone: return "DetailNone";
+ default: return "???";
+ }
+}
+
+static const char *
+XEvent_visibility_to_string (int state)
+{
+ switch (state)
+ {
+ case VisibilityFullyObscured: return "FullyObscured";
+ case VisibilityPartiallyObscured: return "PartiallyObscured";
+ case VisibilityUnobscured: return "Unobscured";
+ default: return "???";
+ }
+}
+
+static void
+describe_event (XEvent *event)
+{
+ char buf[100];
+ struct device *d = get_device_from_display (event->xany.display);
+
+ sprintf (buf, "%s%s", x_event_name (event->type),
+ event->xany.send_event ? " (send)" : "");
+ stderr_out ("%-30s", buf);
+ switch (event->type)
+ {
+ case FocusIn:
+ case FocusOut:
+ {
+ XFocusChangeEvent *ev = &event->xfocus;
+ describe_event_window (ev->window, ev->display);
+ stderr_out (" mode: %s\n", XEvent_mode_to_string (ev->mode));
+ stderr_out (" detail: %s\n", XEvent_detail_to_string(ev->detail));
+ break;
+ }
+
+ case KeyPress:
+ {
+ XKeyEvent *ev = &event->xkey;
+ unsigned int state = ev->state;
+
+ describe_event_window (ev->window, ev->display);
+ stderr_out (" subwindow: %ld\n", ev->subwindow);
+ stderr_out (" state: ");
+ /* Complete list of modifier key masks */
+ if (state & ShiftMask) stderr_out ("Shift ");
+ if (state & LockMask) stderr_out ("Lock ");
+ if (state & ControlMask) stderr_out ("Control ");
+ if (state & Mod1Mask) stderr_out ("Mod1 ");
+ if (state & Mod2Mask) stderr_out ("Mod2 ");
+ if (state & Mod3Mask) stderr_out ("Mod3 ");
+ if (state & Mod4Mask) stderr_out ("Mod4 ");
+ if (state & Mod5Mask) stderr_out ("Mod5 ");
+
+ if (! state)
+ stderr_out ("vanilla\n");
+ else
+ stderr_out ("\n");
+ if (x_key_is_modifier_p (ev->keycode, d))
+ stderr_out (" Modifier key");
+ stderr_out (" keycode: 0x%x\n", ev->keycode);
+ }
+ break;
+
+ case Expose:
+ if (debug_x_events > 1)
+ {
+ XExposeEvent *ev = &event->xexpose;
+ describe_event_window (ev->window, ev->display);
+ stderr_out (" region: x=%d y=%d width=%d height=%d\n",
+ ev->x, ev->y, ev->width, ev->height);
+ stderr_out (" count: %d\n", ev->count);
+ }
+ else
+ stderr_out ("\n");
+ break;
+
+ case GraphicsExpose:
+ if (debug_x_events > 1)
+ {
+ XGraphicsExposeEvent *ev = &event->xgraphicsexpose;
+ describe_event_window (ev->drawable, ev->display);
+ stderr_out (" major: %s\n",
+ (ev ->major_code == X_CopyArea ? "CopyArea" :
+ (ev->major_code == X_CopyPlane ? "CopyPlane" : "?")));
+ stderr_out (" region: x=%d y=%d width=%d height=%d\n",
+ ev->x, ev->y, ev->width, ev->height);
+ stderr_out (" count: %d\n", ev->count);
+ }
+ else
+ stderr_out ("\n");
+ break;
+
+ case EnterNotify:
+ case LeaveNotify:
+ if (debug_x_events > 1)
+ {
+ XCrossingEvent *ev = &event->xcrossing;
+ describe_event_window (ev->window, ev->display);
+#if 0
+ stderr_out(" subwindow: 0x%x\n", ev->subwindow);
+ stderr_out(" pos: %d %d\n", ev->x, ev->y);
+ stderr_out(" root pos: %d %d\n", ev->x_root, ev->y_root);
+#endif
+ stderr_out(" mode: %s\n", XEvent_mode_to_string(ev->mode));
+ stderr_out(" detail: %s\n", XEvent_detail_to_string(ev->detail));
+ stderr_out(" focus: %d\n", ev->focus);
+#if 0
+ stderr_out(" state: 0x%x\n", ev->state);
+#endif
+ }
+ else
+ stderr_out("\n");
+ break;
+
+ case ConfigureNotify:
+ if (debug_x_events > 1)
+ {
+ XConfigureEvent *ev = &event->xconfigure;
+ describe_event_window (ev->window, ev->display);
+ stderr_out(" above: 0x%lx\n", ev->above);
+ stderr_out(" size: %d %d %d %d\n", ev->x, ev->y,
+ ev->width, ev->height);
+ stderr_out(" redirect: %d\n", ev->override_redirect);
+ }
+ else
+ stderr_out("\n");
+ break;
+
+ case VisibilityNotify:
+ if (debug_x_events > 1)
+ {
+ XVisibilityEvent *ev = &event->xvisibility;
+ describe_event_window (ev->window, ev->display);
+ stderr_out(" state: %s\n", XEvent_visibility_to_string(ev->state));
+ }
+ else
+ stderr_out ("\n");
+ break;
+
+ case ClientMessage:
+ {
+ XClientMessageEvent *ev = &event->xclient;
+ char *name = XGetAtomName (ev->display, ev->message_type);
+ stderr_out ("%s", name);
+ if (!strcmp (name, "WM_PROTOCOLS")) {
+ char *protname = XGetAtomName (ev->display, ev->data.l[0]);
+ stderr_out ("(%s)", protname);
+ XFree (protname);
+ }
+ XFree (name);
+ stderr_out ("\n");
+ break;
+ }
+
+ default:
+ stderr_out ("\n");
+ break;
+ }
+
+ fflush (stdout);
+}
+
+#endif /* include describe_event definition */
+
+\f
+/************************************************************************/
+/* get the next event from Xt */
+/************************************************************************/
+
+static Lisp_Object dispatch_event_queue, dispatch_event_queue_tail;
+
+void
+enqueue_Xt_dispatch_event (Lisp_Object event)
+{
+ enqueue_event (event, &dispatch_event_queue, &dispatch_event_queue_tail);
+}
+
+static Lisp_Object
+dequeue_Xt_dispatch_event (void)
+{
+ return dequeue_event (&dispatch_event_queue, &dispatch_event_queue_tail);
+}
+
+/* This business exists because menu events "happen" when
+ menubar_selection_callback() is called from somewhere deep
+ within XtAppProcessEvent in emacs_Xt_next_event(). The
+ callback needs to terminate the modal loop in that function
+ or else it will continue waiting until another event is
+ received.
+
+ Same business applies to scrollbar events. */
+
+void
+signal_special_Xt_user_event (Lisp_Object channel, Lisp_Object function,
+ Lisp_Object object)
+{
+ Lisp_Object event = Fmake_event (Qnil, Qnil);
+
+ XEVENT (event)->event_type = misc_user_event;
+ XEVENT (event)->channel = channel;
+ XEVENT (event)->event.eval.function = function;
+ XEVENT (event)->event.eval.object = object;
+
+ enqueue_Xt_dispatch_event (event);
+}
+
+static void
+emacs_Xt_next_event (Lisp_Event *emacs_event)
+{
+ we_didnt_get_an_event:
+
+ while (NILP (dispatch_event_queue) &&
+ !completed_timeouts_head &&
+ !fake_event_occurred &&
+ !process_events_occurred &&
+ !tty_events_occurred)
+ {
+
+ /* Stupid logic in XtAppProcessEvent() dictates that, if process
+ events and X events are both available, the process event gets
+ taken first. This will cause an infinite loop if we're being
+ called from Fdiscard_input().
+ */
+ if (XtAppPending (Xt_app_con) & XtIMXEvent)
+ XtAppProcessEvent (Xt_app_con, XtIMXEvent);
+ else
+ {
+ Lisp_Object devcons, concons;
+
+ /* We're about to block. Xt has a bug in it (big surprise,
+ there) in that it blocks using select() and doesn't
+ flush the Xlib output buffers (XNextEvent() does this
+ automatically before blocking). So it's necessary
+ for us to do this ourselves. If we don't do it, then
+ display output may not be seen until the next time
+ an X event is received. (This happens esp. with
+ subprocess output that gets sent to a visible buffer.)
+
+ #### The above comment may not have any validity. */
+
+ DEVICE_LOOP_NO_BREAK (devcons, concons)
+ {
+ struct device *d;
+ d = XDEVICE (XCAR (devcons));
+
+ if (DEVICE_X_P (d) && DEVICE_X_DISPLAY (d))
+ /* emacs may be exiting */
+ XFlush (DEVICE_X_DISPLAY (d));
+ }
+ XtAppProcessEvent (Xt_app_con, XtIMAll);
+ }
+ }
+
+ if (!NILP (dispatch_event_queue))
+ {
+ Lisp_Object event, event2;
+ XSETEVENT (event2, emacs_event);
+ event = dequeue_Xt_dispatch_event ();
+ Fcopy_event (event, event2);
+ Fdeallocate_event (event);
+ }
+ else if (tty_events_occurred)
+ {
+ if (!Xt_tty_to_emacs_event (emacs_event))
+ goto we_didnt_get_an_event;
+ }
+ else if (completed_timeouts_head)
+ Xt_timeout_to_emacs_event (emacs_event);
+ else if (fake_event_occurred)
+ {
+ /* A dummy event, so that a cycle of the command loop will occur. */
+ fake_event_occurred = 0;
+ /* eval events have nil as channel */
+ emacs_event->event_type = eval_event;
+ emacs_event->event.eval.function = Qidentity;
+ emacs_event->event.eval.object = Qnil;
+ }
+ else /* if (process_events_occurred) */
+ Xt_process_to_emacs_event (emacs_event);
+
+ /* No need to call XFilterEvent; Xt does it for us */
+}
+
+void
+emacs_Xt_event_handler (Widget wid /* unused */,
+ XtPointer closure /* unused */,
+ XEvent *event,
+ Boolean *continue_to_dispatch /* unused */)
+{
+ Lisp_Object emacs_event = Fmake_event (Qnil, Qnil);
+
+#ifdef DEBUG_XEMACS
+ if (debug_x_events > 0)
+ {
+ describe_event (event);
+ }
+#endif /* DEBUG_XEMACS */
+ if (x_event_to_emacs_event (event, XEVENT (emacs_event)))
+ enqueue_Xt_dispatch_event (emacs_event);
+ else
+ Fdeallocate_event (emacs_event);
+}
+
+\f
+/************************************************************************/
+/* input pending / C-g checking */
+/************************************************************************/
+
+static Bool
+quit_char_predicate (Display *display, XEvent *event, XPointer data)
+{
+ struct device *d = get_device_from_display (display);
+ struct x_device *xd = DEVICE_X_DATA (d);
+ char c, quit_char;
+ Bool *critical = (Bool *) data;
+ Lisp_Object keysym;
+
+ if (critical)
+ *critical = False;
+ if ((event->type != KeyPress) ||
+ (! x_any_window_to_frame (d, event->xany.window)) ||
+ (event->xkey.state
+ & (xd->MetaMask | xd->HyperMask | xd->SuperMask | xd->AltMask)))
+ return 0;
+
+ /* This duplicates some code that exists elsewhere, but it's relatively
+ fast and doesn't cons. */
+ keysym = x_to_emacs_keysym (&event->xkey, 1);
+ if (NILP (keysym)) return 0;
+ if (CHAR_OR_CHAR_INTP (keysym))
+ c = XCHAR_OR_CHAR_INT (keysym);
+ /* Highly doubtful that these are the quit character, but... */
+ else if (EQ (keysym, QKbackspace)) c = '\b';
+ else if (EQ (keysym, QKtab)) c = '\t';
+ else if (EQ (keysym, QKlinefeed)) c = '\n';
+ else if (EQ (keysym, QKreturn)) c = '\r';
+ else if (EQ (keysym, QKescape)) c = 27;
+ else if (EQ (keysym, QKspace)) c = ' ';
+ else if (EQ (keysym, QKdelete)) c = 127;
+ else return 0;
+
+ if (event->xkey.state & xd->MetaMask) c |= 0x80;
+ if ((event->xkey.state & ControlMask) && !(c >= 'A' && c <= 'Z'))
+ c &= 0x1F; /* unshifted control characters */
+ quit_char = CONSOLE_QUIT_CHAR (XCONSOLE (DEVICE_CONSOLE (d)));
+ if (c == quit_char)
+ return True;
+ /* If we've got Control-Shift-G instead of Control-G, that means
+ we have a critical_quit. Caps_Lock is its own modifier, so it
+ won't cause ^G to act differently than before. */
+ if (event->xkey.state & ControlMask) c &= 0x1F;
+ if (c == quit_char)
+ {
+ if (critical) *critical = True;
+ return True;
+ }
+ return False;
+}
+
+/* This scans the X input queue for a KeyPress event that matches the
+ quit character, and sets Vquit_flag. This is called from the
+ QUIT macro to determine whether we should quit.
+
+ In a SIGIO world, this won't be called unless a SIGIO has happened
+ since the last time we checked.
+
+ In a non-SIGIO world, this is called from emacs_Xt_event_pending_p
+ (which is called from input_pending_p).
+ */
+static void
+x_check_for_quit_char (Display *display)
+{
+ XEvent event;
+ int queued;
+ Bool critical_quit = False;
+ XEventsQueued (display, QueuedAfterReading);
+ queued = XCheckIfEvent (display, &event,
+ quit_char_predicate,
+ (char *) &critical_quit);
+ if (queued)
+ {
+ Vquit_flag = (critical_quit ? Qcritical : Qt);
+ /* don't put the event back onto the queue. Those functions that
+ wanted to read a ^G directly have arranged to do this. */
+ }
+}
+
+static void
+check_for_tty_quit_char (struct device *d)
+{
+ SELECT_TYPE temp_mask;
+ int infd = DEVICE_INFD (d);
+ struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
+ Emchar quit_char = CONSOLE_QUIT_CHAR (con);
+
+ FD_ZERO (&temp_mask);
+ FD_SET (infd, &temp_mask);
+
+ while (1)
+ {
+ Lisp_Object event;
+ Emchar the_char;
+
+ if (!poll_fds_for_input (temp_mask))
+ return;
+
+ event = Fmake_event (Qnil, Qnil);
+ if (!read_event_from_tty_or_stream_desc (XEVENT (event), con, infd))
+ /* EOF, or something ... */
+ return;
+ /* #### bogus. quit-char should be allowed to be any sort
+ of event. */
+ the_char = event_to_character (XEVENT (event), 1, 0, 0);
+ if (the_char >= 0 && the_char == quit_char)
+ {
+ Vquit_flag = Qt;
+ /* do not queue the C-g. See above. */
+ return;
+ }
+
+ /* queue the read event to be read for real later. */
+ enqueue_Xt_dispatch_event (event);
+ }
+}
+
+static void
+emacs_Xt_quit_p (void)
+{
+ Lisp_Object devcons, concons;
+ CONSOLE_LOOP (concons)
+ {
+ struct console *con = XCONSOLE (XCAR (concons));
+ if (!con->input_enabled)
+ continue;
+
+ CONSOLE_DEVICE_LOOP (devcons, con)
+ {
+ struct device *d;
+ d = XDEVICE (XCAR (devcons));
+
+ if (DEVICE_X_P (d) && DEVICE_X_DISPLAY (d))
+ /* emacs may be exiting */
+ x_check_for_quit_char (DEVICE_X_DISPLAY (d));
+ else if (DEVICE_TTY_P (d))
+ check_for_tty_quit_char (d);
+ }
+ }
+}
+
+static void
+drain_X_queue (void)
+{
+ Lisp_Object devcons, concons;
+ CONSOLE_LOOP (concons)
+ {
+ struct console *con = XCONSOLE (XCAR (concons));
+ if (!con->input_enabled)
+ continue;
+
+ /* sjt sez: Have you tried the loop over devices with XtAppPending(),
+ not XEventsQueued()?
+ Ben Sigelman sez: No.
+ sjt sez: I'm guessing that the reason that your patch "works" is this:
+
+ + struct device* d;
+ + Display* display;
+ + d = XDEVICE (XCAR (devcons));
+ + if (DEVICE_X_P (d) && DEVICE_X_DISPLAY (d)) {
+
+ Ie, if the device goes down, XEmacs detects that and deletes it.
+ Then the if() fails (DEVICE_X_DISPLAY(d) is NULL), and we don't go
+ into the Xlib-of-no-return. If you know different, I'd like to hear
+ about it. ;-)
+
+ These ideas haven't been tested; the code below works for Ben.
+ */
+ CONSOLE_DEVICE_LOOP (devcons, con)
+ {
+ struct device* d;
+ Display* display;
+ d = XDEVICE (XCAR (devcons));
+ if (DEVICE_X_P (d) && DEVICE_X_DISPLAY (d)) {
+ display = DEVICE_X_DISPLAY (d);
+ while (XEventsQueued (display, QueuedAfterReading))
+ XtAppProcessEvent (Xt_app_con, XtIMXEvent);
+ }
+ }
+ }
+ /* This is the old code, before Ben Sigelman's patch. */
+ /*
+ while (XtAppPending (Xt_app_con) & XtIMXEvent)
+ XtAppProcessEvent (Xt_app_con, XtIMXEvent);
+ */
+}
+
+static int
+emacs_Xt_event_pending_p (int user_p)
+{
+ Lisp_Object event;
+ int tick_count_val;
+
+ /* If `user_p' is false, then this function returns whether there are any
+ X, timeout, or fd events pending (that is, whether emacs_Xt_next_event()
+ would return immediately without blocking).
+
+ if `user_p' is true, then this function returns whether there are any
+ *user generated* events available (that is, whether there are keyboard
+ or mouse-click events ready to be read). This also implies that
+ emacs_Xt_next_event() would not block.
+
+ In a non-SIGIO world, this also checks whether the user has typed ^G,
+ since this is a convenient place to do so. We don't need to do this
+ in a SIGIO world, since input causes an interrupt.
+ */
+
+#if 0
+ /* I don't think there's any point to this and it will nullify
+ the speed gains achieved by the sigio_happened checking below.
+ Its only advantage is that it may possibly make C-g response
+ a bit faster. The C-g will be noticed within 0.25 second, anyway,
+ even without this. */
+#ifndef SIGIO
+ /* First check for C-g if necessary */
+ emacs_Xt_quit_p ();
+#endif
+#endif
+
+ /* This function used to simply check whether there were any X
+ events (or if user_p was 1, it iterated over all the pending
+ X events using XCheckIfEvent(), looking for keystrokes and
+ button events). That worked in the old cheesoid event loop,
+ which didn't go through XtAppDispatchEvent(), but it doesn't
+ work any more -- X events may not result in anything. For
+ example, a button press in a blank part of the menubar appears
+ as an X event but will not result in any Emacs events (a
+ button press that activates the menubar results in an Emacs
+ event through the stop_next_event mechanism).
+
+ The only accurate way of determining whether these X events
+ translate into Emacs events is to go ahead and dispatch them
+ until there's something on the dispatch queue. */
+
+ /* See if there are any user events already on the queue. */
+ EVENT_CHAIN_LOOP (event, dispatch_event_queue)
+ if (!user_p || command_event_p (event))
+ return 1;
+
+ /* See if there's any TTY input available.
+ */
+ if (poll_fds_for_input (tty_only_mask))
+ return 1;
+
+ if (!user_p)
+ {
+ /* If not user_p and there are any timer or file-desc events
+ pending, we know there will be an event so we're through. */
+ XtInputMask pending_value;
+
+ /* Note that formerly we just checked the value of XtAppPending()
+ to determine if there was file-desc input. This doesn't
+ work any more with the signal_event_pipe; XtAppPending()
+ will says "yes" in this case but there isn't really any
+ input. Another way of fixing this problem is for the
+ signal_event_pipe to generate actual input in the form
+ of an identity eval event or something. (#### maybe this
+ actually happens?) */
+
+ if (poll_fds_for_input (process_only_mask))
+ return 1;
+
+ pending_value = XtAppPending (Xt_app_con);
+
+ if (pending_value & XtIMTimer)
+ return 1;
+ }
+
+ /* XtAppPending() can be super-slow, esp. over a network connection.
+ Quantify results have indicated that in some cases the
+ call to detect_input_pending() completely dominates the
+ running time of redisplay(). Fortunately, in a SIGIO world
+ we can more quickly determine whether there are any X events:
+ if an event has happened since the last time we checked, then
+ a SIGIO will have happened. On a machine with broken SIGIO,
+ we'll still be in an OK state -- the sigio_happened flag
+ will get set at least once a second, so we'll be no more than
+ one second behind reality. (In general it's OK if we
+ erroneously report no input pending when input is actually
+ pending() -- preemption is just a bit less efficient, that's
+ all. It's bad bad bad if you err the other way -- you've
+ promised that `next-event' won't block but it actually will,
+ and some action might get delayed until the next time you
+ hit a key.)
+ */
+
+ /* quit_check_signal_tick_count is volatile so try to avoid race conditions
+ by using a temporary variable */
+ tick_count_val = quit_check_signal_tick_count;
+ if (last_quit_check_signal_tick_count != tick_count_val
+#if !defined (SIGIO) || defined (CYGWIN)
+ || (XtIMXEvent & XtAppPending (Xt_app_con))
+#endif
+ )
+ {
+ last_quit_check_signal_tick_count = tick_count_val;
+
+ /* We need to drain the entire queue now -- if we only
+ drain part of it, we may later on end up with events
+ actually pending but detect_input_pending() returning
+ false because there wasn't another SIGIO. */
+ drain_X_queue ();
+
+ EVENT_CHAIN_LOOP (event, dispatch_event_queue)
+ if (!user_p || command_event_p (event))
+ return 1;
+ }
+
+ return 0;
+}
+
+static int
+emacs_Xt_current_event_timestamp (struct console *c)
+{
+ /* semi-yuck. */
+ Lisp_Object devs = CONSOLE_DEVICE_LIST (c);
+
+ if (NILP (devs))
+ return 0;
+ else
+ {
+ struct device *d = XDEVICE (XCAR (devs));
+ return DEVICE_X_LAST_SERVER_TIMESTAMP (d);
+ }
+}
+
+\f
+/************************************************************************/
+/* replacement for standard string-to-pixel converter */
+/************************************************************************/
+
+/* This was constructed by ripping off the standard string-to-pixel
+ converter from Converters.c in the Xt source code and modifying
+ appropriately. */
+
+#if 0
+
+/* This is exported by the Xt library (at least by mine). If this
+ isn't the case somewhere, rename this appropriately and remove
+ the '#if 0'. Note, however, that I got "unknown structure"
+ errors when I tried this. */
+XtConvertArgRec Const colorConvertArgs[] = {
+ { XtWidgetBaseOffset, (XtPointer)XtOffsetOf(WidgetRec, core.screen),
+ sizeof (Screen *) },
+ { XtWidgetBaseOffset, (XtPointer)XtOffsetOf(WidgetRec, core.colormap),
+ sizeof (Colormap) }
+};
+
+#endif
+
+#define done(type, value) \
+ if (toVal->addr != NULL) { \
+ if (toVal->size < sizeof(type)) { \
+ toVal->size = sizeof(type); \
+ return False; \
+ } \
+ *(type*)(toVal->addr) = (value); \
+ } else { \
+ static type static_val; \
+ static_val = (value); \
+ toVal->addr = (XPointer)&static_val; \
+ } \
+ toVal->size = sizeof(type); \
+ return True /* Caller supplies `;' */
+
+/* JH: We use this because I think there's a possibility this
+ is called before the device is properly set up, in which case
+ I don't want to ABORT. */
+extern struct device *get_device_from_display_1 (Display *dpy);
+
+static
+Boolean EmacsXtCvtStringToPixel (
+ Display *dpy,
+ XrmValuePtr args,
+ Cardinal *num_args,
+ XrmValuePtr fromVal,
+ XrmValuePtr toVal,
+ XtPointer *closure_ret)
+{
+ String str = (String)fromVal->addr;
+ XColor screenColor;
+ XColor exactColor;
+ Screen *screen;
+ Colormap colormap;
+ Visual *visual;
+ struct device *d;
+ Status status;
+ String params[1];
+ Cardinal num_params = 1;
+ XtAppContext the_app_con = XtDisplayToApplicationContext (dpy);
+
+ if (*num_args != 2) {
+ XtAppWarningMsg(the_app_con, "wrongParameters", "cvtStringToPixel",
+ "XtToolkitError",
+ "String to pixel conversion needs screen and colormap arguments",
+ (String *)NULL, (Cardinal *)NULL);
+ return False;
+ }
+
+ screen = *((Screen **) args[0].addr);
+ colormap = *((Colormap *) args[1].addr);
+
+ /* The original uses the private function CompareISOLatin1().
+ Use XmuCompareISOLatin1() if you want, but I don't think it
+ makes any difference here. */
+ if (strcmp(str, XtDefaultBackground) == 0) {
+ *closure_ret = False;
+ /* This refers to the display's "*reverseVideo" resource.
+ These display resources aren't documented anywhere that
+ I can find, so I'm going to ignore this. */
+ /* if (pd->rv) done(Pixel, BlackPixelOfScreen(screen)) else */
+ done(Pixel, WhitePixelOfScreen(screen));
+ }
+ if (strcmp(str, XtDefaultForeground) == 0) {
+ *closure_ret = False;
+ /* if (pd->rv) done(Pixel, WhitePixelOfScreen(screen)) else */
+ done(Pixel, BlackPixelOfScreen(screen));
+ }
+
+ /* Originally called XAllocNamedColor() here. */
+ if ((d = get_device_from_display_1(dpy))) {
+ visual = DEVICE_X_VISUAL(d);
+ if (colormap != DEVICE_X_COLORMAP(d)) {
+ XtAppWarningMsg(the_app_con, "weirdColormap", "cvtStringToPixel",
+ "XtToolkitWarning",
+ "The colormap passed to cvtStringToPixel doesn't match the one registered to the device.\n",
+ NULL, 0);
+ status = XAllocNamedColor(dpy, colormap, (char*)str, &screenColor, &exactColor);
+ } else {
+ status = XParseColor (dpy, colormap, (char*)str, &screenColor);
+ if (status) {
+ status = allocate_nearest_color (dpy, colormap, visual, &screenColor);
+ }
+ }
+ } else {
+ /* We haven't set up this device totally yet, so just punt */
+ status = XAllocNamedColor(dpy, colormap, (char*)str, &screenColor, &exactColor);
+ }
+ if (status == 0) {
+ params[0] = str;
+ /* Server returns a specific error code but Xlib discards it. Ugh */
+ if (XLookupColor(DisplayOfScreen(screen), colormap, (char*) str,
+ &exactColor, &screenColor)) {
+ XtAppWarningMsg(the_app_con, "noColormap", "cvtStringToPixel",
+ "XtToolkitError",
+ "Cannot allocate colormap entry for \"%s\"",
+ params, &num_params);
+
+ } else {
+ XtAppWarningMsg(the_app_con, "badValue", "cvtStringToPixel",
+ "XtToolkitError",
+ "Color name \"%s\" is not defined", params, &num_params);
+ }
+
+ *closure_ret = False;
+ return False;
+ } else {
+ *closure_ret = (char*)True;
+ done(Pixel, screenColor.pixel);
+ }
+}
+
+/* ARGSUSED */
+static void EmacsFreePixel (
+ XtAppContext app,
+ XrmValuePtr toVal,
+ XtPointer closure,
+ XrmValuePtr args,
+ Cardinal *num_args)
+{
+ if (*num_args != 2) {
+ XtAppWarningMsg(app, "wrongParameters","freePixel","XtToolkitError",
+ "Freeing a pixel requires screen and colormap arguments",
+ (String *)NULL, (Cardinal *)NULL);
+ return;
+ }
+
+ if (closure) {
+ Screen *screen = *((Screen **) args[0].addr);
+ Colormap colormap = *((Colormap *) args[1].addr);
+ XFreeColors(DisplayOfScreen(screen), colormap,
+ (unsigned long*)toVal->addr, 1, (unsigned long)0);
+ }
+}
+
+\f
+/************************************************************************/
+/* handle focus changes for native widgets */
+/************************************************************************/
+static void
+emacs_Xt_event_widget_focus_in (Widget w,
+ XEvent *event,
+ String *params,
+ Cardinal *num_params)
+{
+ struct frame* f =
+ x_any_widget_or_parent_to_frame (get_device_from_display (event->xany.display), w);
+
+ XtSetKeyboardFocus (FRAME_X_SHELL_WIDGET (f), w);
+}
+
+static void
+emacs_Xt_event_widget_focus_out (Widget w,
+ XEvent *event,
+ String *params,
+ Cardinal *num_params)
+{
+}
+
+static XtActionsRec widgetActionsList[] =
+{
+ {"widget-focus-in", emacs_Xt_event_widget_focus_in },
+ {"widget-focus-out", emacs_Xt_event_widget_focus_out },
+};
+
+static void
+emacs_Xt_event_add_widget_actions (XtAppContext ctx)
+{
+ XtAppAddActions (ctx, widgetActionsList, 2);
+}
+
+\f
+/************************************************************************/
+/* initialization */
+/************************************************************************/
+
+void
+syms_of_event_Xt (void)
+{
+ defsymbol (&Qkey_mapping, "key-mapping");
+ defsymbol (&Qsans_modifiers, "sans-modifiers");
+ defsymbol (&Qself_insert_command, "self-insert-command");
+}
+
+void
+reinit_vars_of_event_Xt (void)
+{
+ Xt_event_stream = xnew (struct event_stream);
+ Xt_event_stream->event_pending_p = emacs_Xt_event_pending_p;
+ Xt_event_stream->force_event_pending = emacs_Xt_force_event_pending;
+ Xt_event_stream->next_event_cb = emacs_Xt_next_event;
+ Xt_event_stream->handle_magic_event_cb = emacs_Xt_handle_magic_event;
+ Xt_event_stream->add_timeout_cb = emacs_Xt_add_timeout;
+ Xt_event_stream->remove_timeout_cb = emacs_Xt_remove_timeout;
+ Xt_event_stream->select_console_cb = emacs_Xt_select_console;
+ Xt_event_stream->unselect_console_cb = emacs_Xt_unselect_console;
+ Xt_event_stream->select_process_cb = emacs_Xt_select_process;
+ Xt_event_stream->unselect_process_cb = emacs_Xt_unselect_process;
+ Xt_event_stream->quit_p_cb = emacs_Xt_quit_p;
+ Xt_event_stream->create_stream_pair_cb = emacs_Xt_create_stream_pair;
+ Xt_event_stream->delete_stream_pair_cb = emacs_Xt_delete_stream_pair;
+ Xt_event_stream->current_event_timestamp_cb =
+ emacs_Xt_current_event_timestamp;
+
+ the_Xt_timeout_blocktype = Blocktype_new (struct Xt_timeout_blocktype);
+
+ last_quit_check_signal_tick_count = 0;
+
+ /* this function only makes safe calls */
+ init_what_input_once ();
+}
+
+void
+vars_of_event_Xt (void)
+{
+ reinit_vars_of_event_Xt ();
+
+ dispatch_event_queue = Qnil;
+ staticpro (&dispatch_event_queue);
+ dispatch_event_queue_tail = Qnil;
+ dump_add_root_object (&dispatch_event_queue_tail);
+
+ DEFVAR_BOOL ("x-allow-sendevents", &x_allow_sendevents /*
+*Non-nil means to allow synthetic events. Nil means they are ignored.
+Beware: allowing emacs to process SendEvents opens a big security hole.
+*/ );
+ x_allow_sendevents = 0;
+
+#ifdef DEBUG_XEMACS
+ DEFVAR_INT ("debug-x-events", &debug_x_events /*
+If non-zero, display debug information about X events that XEmacs sees.
+Information is displayed on stderr. Currently defined values are:
+
+1 == non-verbose output
+2 == verbose output
+*/ );
+ debug_x_events = 0;
+#endif
+}
+
+/* This mess is a hack that patches the shell widget to treat visual inheritance
+ the same as colormap and depth inheritance */
+
+static XtInitProc orig_shell_init_proc;
+
+static void ShellVisualPatch(Widget wanted, Widget new,
+ ArgList args, Cardinal *num_args)
+{
+ Widget p;
+ ShellWidget w = (ShellWidget) new;
+
+ /* first, call the original setup */
+ (*orig_shell_init_proc)(wanted, new, args, num_args);
+
+ /* if the visual isn't explicitly set, grab it from the nearest shell ancestor */
+ if (w->shell.visual == CopyFromParent) {
+ p = XtParent(w);
+ while (p && !XtIsShell(p)) p = XtParent(p);
+ if (p) w->shell.visual = ((ShellWidget)p)->shell.visual;
+ }
+}
+
+void
+init_event_Xt_late (void) /* called when already initialized */
+{
+ timeout_id_tick = 1;
+ pending_timeouts = NULL;
+ completed_timeouts_head = NULL; /* queue is empty */
+ completed_timeouts_tail = NULL; /* just to be picky */
+
+ event_stream = Xt_event_stream;
+
+#if defined(HAVE_XIM) || defined(USE_XFONTSET)
+ Initialize_Locale();
+#endif /* HAVE_XIM || USE_XFONTSET */
+
+ XtToolkitInitialize ();
+ Xt_app_con = XtCreateApplicationContext ();
+ XtAppSetFallbackResources (Xt_app_con, (String *) x_fallback_resources);
+
+ /* In select-x.c */
+ x_selection_timeout = (XtAppGetSelectionTimeout (Xt_app_con) / 1000);
+ XSetErrorHandler (x_error_handler);
+ XSetIOErrorHandler (x_IO_error_handler);
+
+#ifndef WIN32_NATIVE
+ XtAppAddInput (Xt_app_con, signal_event_pipe[0],
+ (XtPointer) (XtInputReadMask /* | XtInputExceptMask */),
+ Xt_what_callback, 0);
+#endif
+
+ XtAppSetTypeConverter (Xt_app_con, XtRString, XtRPixel,
+ EmacsXtCvtStringToPixel,
+ (XtConvertArgList) colorConvertArgs,
+ 2, XtCacheByDisplay, EmacsFreePixel);
+
+#ifdef XIM_XLIB
+ XtAppSetTypeConverter (Xt_app_con, XtRString, XtRXimStyles,
+ EmacsXtCvtStringToXIMStyles,
+ NULL, 0,
+ XtCacheByDisplay, EmacsFreeXIMStyles);
+#endif /* XIM_XLIB */
+ /* Add extra actions to native widgets to handle focus and friends. */
+ emacs_Xt_event_add_widget_actions (Xt_app_con);
+
+ /* insert the visual inheritance patch/hack described above */
+ orig_shell_init_proc = shellClassRec.core_class.initialize;
+ shellClassRec.core_class.initialize = ShellVisualPatch;
+
+}
projects / chise / xemacs-chise.git- / blobdiff