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misc.c
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misc.c
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/* $XTermId: misc.c,v 1.658 2013/02/03 23:18:38 tom Exp $ */
/*
* Copyright 1999-2012,2013 by Thomas E. Dickey
*
* All Rights Reserved
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name(s) of the above copyright
* holders shall not be used in advertising or otherwise to promote the
* sale, use or other dealings in this Software without prior written
* authorization.
*
*
* Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
*
* All Rights Reserved
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* supporting documentation, and that the name of Digital Equipment
* Corporation not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior permission.
*
*
* DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
* DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
* ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
#include <version.h>
#include <main.h>
#include <xterm.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdarg.h>
#include <signal.h>
#include <ctype.h>
#include <pwd.h>
#include <sys/wait.h>
#include <X11/keysym.h>
#include <X11/Xatom.h>
#include <X11/cursorfont.h>
#include <X11/Xlocale.h>
#include <X11/Xmu/Error.h>
#include <X11/Xmu/SysUtil.h>
#include <X11/Xmu/WinUtil.h>
#include <X11/Xmu/Xmu.h>
#if HAVE_X11_SUNKEYSYM_H
#include <X11/Sunkeysym.h>
#endif
#ifdef HAVE_LIBXPM
#include <X11/xpm.h>
#endif
#ifdef HAVE_LANGINFO_CODESET
#include <langinfo.h>
#endif
#include <xutf8.h>
#include <data.h>
#include <error.h>
#include <menu.h>
#include <fontutils.h>
#include <xcharmouse.h>
#include <xstrings.h>
#include <xtermcap.h>
#include <VTparse.h>
#include <assert.h>
#if (XtSpecificationRelease < 6)
#ifndef X_GETTIMEOFDAY
#define X_GETTIMEOFDAY(t) gettimeofday(t,(struct timezone *)0)
#endif
#endif
#ifdef VMS
#define XTERM_VMS_LOGFILE "SYS$SCRATCH:XTERM_LOG.TXT"
#ifdef ALLOWLOGFILEEXEC
#undef ALLOWLOGFILEEXEC
#endif
#endif /* VMS */
#if OPT_TEK4014
#define OUR_EVENT(event,Type) \
(event.type == Type && \
(event.xcrossing.window == XtWindow(XtParent(xw)) || \
(tekWidget && \
event.xcrossing.window == XtWindow(XtParent(tekWidget)))))
#else
#define OUR_EVENT(event,Type) \
(event.type == Type && \
(event.xcrossing.window == XtWindow(XtParent(xw))))
#endif
static Boolean xtermAllocColor(XtermWidget, XColor *, const char *);
static Cursor make_hidden_cursor(XtermWidget);
static char emptyString[] = "";
#if OPT_EXEC_XTERM
/* Like readlink(2), but returns a malloc()ed buffer, or NULL on
error; adapted from libc docs */
static char *
Readlink(const char *filename)
{
char *buf = NULL;
size_t size = 100;
int n;
for (;;) {
buf = TypeRealloc(char, size, buf);
memset(buf, 0, size);
n = (int) readlink(filename, buf, size);
if (n < 0) {
free(buf);
return NULL;
}
if ((unsigned) n < size) {
return buf;
}
size *= 2;
}
}
#endif /* OPT_EXEC_XTERM */
static void
Sleep(int msec)
{
static struct timeval select_timeout;
select_timeout.tv_sec = 0;
select_timeout.tv_usec = msec * 1000;
select(0, 0, 0, 0, &select_timeout);
}
static void
selectwindow(XtermWidget xw, int flag)
{
TScreen *screen = TScreenOf(xw);
TRACE(("selectwindow(%d) flag=%d\n", screen->select, flag));
#if OPT_TEK4014
if (TEK4014_ACTIVE(xw)) {
if (!Ttoggled)
TCursorToggle(tekWidget, TOGGLE);
screen->select |= flag;
if (!Ttoggled)
TCursorToggle(tekWidget, TOGGLE);
} else
#endif
{
#if OPT_I18N_SUPPORT && OPT_INPUT_METHOD
TInput *input = lookupTInput(xw, (Widget) xw);
if (input && input->xic)
XSetICFocus(input->xic);
#endif
if (screen->cursor_state && CursorMoved(screen))
HideCursor();
screen->select |= flag;
if (screen->cursor_state)
ShowCursor();
}
GetScrollLock(screen);
}
static void
unselectwindow(XtermWidget xw, int flag)
{
TScreen *screen = TScreenOf(xw);
TRACE(("unselectwindow(%d) flag=%d\n", screen->select, flag));
if (screen->hide_pointer && screen->pointer_mode < pFocused) {
screen->hide_pointer = False;
xtermDisplayCursor(xw);
}
if (!screen->always_highlight) {
#if OPT_TEK4014
if (TEK4014_ACTIVE(xw)) {
if (!Ttoggled)
TCursorToggle(tekWidget, TOGGLE);
screen->select &= ~flag;
if (!Ttoggled)
TCursorToggle(tekWidget, TOGGLE);
} else
#endif
{
#if OPT_I18N_SUPPORT && OPT_INPUT_METHOD
TInput *input = lookupTInput(xw, (Widget) xw);
if (input && input->xic)
XUnsetICFocus(input->xic);
#endif
screen->select &= ~flag;
if (screen->cursor_state && CursorMoved(screen))
HideCursor();
if (screen->cursor_state)
ShowCursor();
}
}
}
static void
DoSpecialEnterNotify(XtermWidget xw, XEnterWindowEvent * ev)
{
TScreen *screen = TScreenOf(xw);
TRACE(("DoSpecialEnterNotify(%d)\n", screen->select));
TRACE_FOCUS(xw, ev);
if (((ev->detail) != NotifyInferior) &&
ev->focus &&
!(screen->select & FOCUS))
selectwindow(xw, INWINDOW);
}
static void
DoSpecialLeaveNotify(XtermWidget xw, XEnterWindowEvent * ev)
{
TScreen *screen = TScreenOf(xw);
TRACE(("DoSpecialLeaveNotify(%d)\n", screen->select));
TRACE_FOCUS(xw, ev);
if (((ev->detail) != NotifyInferior) &&
ev->focus &&
!(screen->select & FOCUS))
unselectwindow(xw, INWINDOW);
}
#ifndef XUrgencyHint
#define XUrgencyHint (1L << 8) /* X11R5 does not define */
#endif
static void
setXUrgency(XtermWidget xw, Bool enable)
{
TScreen *screen = TScreenOf(xw);
if (screen->bellIsUrgent) {
XWMHints *h = XGetWMHints(screen->display, VShellWindow(xw));
if (h != 0) {
if (enable && !(screen->select & FOCUS)) {
h->flags |= XUrgencyHint;
} else {
h->flags &= ~XUrgencyHint;
}
XSetWMHints(screen->display, VShellWindow(xw), h);
}
}
}
void
do_xevents(void)
{
TScreen *screen = TScreenOf(term);
if (xtermAppPending()
||
#if defined(VMS) || defined(__VMS)
screen->display->qlen > 0
#else
GetBytesAvailable(ConnectionNumber(screen->display)) > 0
#endif
)
xevents();
}
void
xtermDisplayCursor(XtermWidget xw)
{
TScreen *screen = TScreenOf(xw);
if (screen->Vshow) {
if (screen->hide_pointer) {
TRACE(("Display hidden_cursor\n"));
XDefineCursor(screen->display, VWindow(screen), screen->hidden_cursor);
} else {
TRACE(("Display pointer_cursor\n"));
recolor_cursor(screen,
screen->pointer_cursor,
T_COLOR(screen, MOUSE_FG),
T_COLOR(screen, MOUSE_BG));
XDefineCursor(screen->display, VWindow(screen), screen->pointer_cursor);
}
}
}
void
xtermShowPointer(XtermWidget xw, Bool enable)
{
static int tried = -1;
TScreen *screen = TScreenOf(xw);
#if OPT_TEK4014
if (TEK4014_SHOWN(xw))
enable = True;
#endif
/*
* Whether we actually hide the pointer depends on the pointer-mode and
* the mouse-mode:
*/
if (!enable) {
switch (screen->pointer_mode) {
case pNever:
enable = True;
break;
case pNoMouse:
if (screen->send_mouse_pos != MOUSE_OFF)
enable = True;
break;
case pAlways:
case pFocused:
break;
}
}
if (enable) {
if (screen->hide_pointer) {
screen->hide_pointer = False;
xtermDisplayCursor(xw);
switch (screen->send_mouse_pos) {
case ANY_EVENT_MOUSE:
break;
default:
MotionOff(screen, xw);
break;
}
}
} else if (!(screen->hide_pointer) && (tried <= 0)) {
if (screen->hidden_cursor == 0) {
screen->hidden_cursor = make_hidden_cursor(xw);
}
if (screen->hidden_cursor == 0) {
tried = 1;
} else {
tried = 0;
screen->hide_pointer = True;
xtermDisplayCursor(xw);
MotionOn(screen, xw);
}
}
}
#if OPT_TRACE
static void
TraceExposeEvent(XEvent * arg)
{
XExposeEvent *event = (XExposeEvent *) arg;
TRACE(("pending Expose %ld %d: %d,%d %dx%d %#lx\n",
event->serial,
event->count,
event->y,
event->x,
event->height,
event->width,
event->window));
}
#else
#define TraceExposeEvent(event) /* nothing */
#endif
/* true if p contains q */
#define ExposeContains(p,q) \
((p)->y <= (q)->y \
&& (p)->x <= (q)->x \
&& ((p)->y + (p)->height) >= ((q)->y + (q)->height) \
&& ((p)->x + (p)->width) >= ((q)->x + (q)->width))
static XtInputMask
mergeExposeEvents(XEvent * target)
{
XEvent next_event;
XExposeEvent *p, *q;
TRACE(("pending Expose...?\n"));
TraceExposeEvent(target);
XtAppNextEvent(app_con, target);
p = (XExposeEvent *) target;
while (XtAppPending(app_con)
&& XtAppPeekEvent(app_con, &next_event)
&& next_event.type == Expose) {
Boolean merge_this = False;
TraceExposeEvent(&next_event);
q = (XExposeEvent *) (&next_event);
XtAppNextEvent(app_con, &next_event);
/*
* If either window is contained within the other, merge the events.
* The traces show that there are also cases where a full repaint of
* a window is broken into 3 or more rectangles, which do not arrive
* in the same instant. We could merge those if xterm were modified
* to skim several events ahead.
*/
if (p->window == q->window) {
if (ExposeContains(p, q)) {
TRACE(("pending Expose...merged forward\n"));
merge_this = True;
next_event = *target;
} else if (ExposeContains(q, p)) {
TRACE(("pending Expose...merged backward\n"));
merge_this = True;
}
}
if (!merge_this) {
XtDispatchEvent(target);
}
*target = next_event;
}
XtDispatchEvent(target);
return XtAppPending(app_con);
}
#if OPT_TRACE
static void
TraceConfigureEvent(XEvent * arg)
{
XConfigureEvent *event = (XConfigureEvent *) arg;
TRACE(("pending Configure %ld %d,%d %dx%d %#lx\n",
event->serial,
event->y,
event->x,
event->height,
event->width,
event->window));
}
#else
#define TraceConfigureEvent(event) /* nothing */
#endif
/*
* On entry, we have peeked at the event queue and see a configure-notify
* event. Remove that from the queue so we can look further.
*
* Then, as long as there is a configure-notify event in the queue, remove
* that. If the adjacent events are for different windows, process the older
* event and update the event used for comparing windows. If they are for the
* same window, only the newer event is of interest.
*
* Finally, process the (remaining) configure-notify event.
*/
static XtInputMask
mergeConfigureEvents(XEvent * target)
{
XEvent next_event;
XConfigureEvent *p, *q;
XtAppNextEvent(app_con, target);
p = (XConfigureEvent *) target;
TRACE(("pending Configure...?%s\n", XtAppPending(app_con) ? "yes" : "no"));
TraceConfigureEvent(target);
if (XtAppPending(app_con)
&& XtAppPeekEvent(app_con, &next_event)
&& next_event.type == ConfigureNotify) {
Boolean merge_this = False;
TraceConfigureEvent(&next_event);
XtAppNextEvent(app_con, &next_event);
q = (XConfigureEvent *) (&next_event);
if (p->window == q->window) {
TRACE(("pending Configure...merged\n"));
merge_this = True;
}
if (!merge_this) {
TRACE(("pending Configure...skipped\n"));
XtDispatchEvent(target);
}
*target = next_event;
}
XtDispatchEvent(target);
return XtAppPending(app_con);
}
/*
* Filter redundant Expose- and ConfigureNotify-events. This is limited to
* adjacent events because there could be other event-loop processing. Absent
* that limitation, it might be possible to scan ahead to find when the screen
* would be completely updated, skipping unnecessary re-repainting before that
* point.
*
* Note: all cases should allow doing XtAppNextEvent if result is true.
*/
XtInputMask
xtermAppPending(void)
{
XtInputMask result = XtAppPending(app_con);
XEvent this_event;
while (result && XtAppPeekEvent(app_con, &this_event)) {
if (this_event.type == Expose) {
result = mergeExposeEvents(&this_event);
} else if (this_event.type == ConfigureNotify) {
result = mergeConfigureEvents(&this_event);
} else {
TRACE(("pending %s\n", visibleEventType(this_event.type)));
break;
}
}
return result;
}
void
xevents(void)
{
XtermWidget xw = term;
TScreen *screen = TScreenOf(xw);
XEvent event;
XtInputMask input_mask;
if (need_cleanup)
NormalExit();
if (screen->scroll_amt)
FlushScroll(xw);
/*
* process timeouts, relying on the fact that XtAppProcessEvent
* will process the timeout and return without blockng on the
* XEvent queue. Other sources i.e., the pty are handled elsewhere
* with select().
*/
while ((input_mask = xtermAppPending()) != 0) {
if (input_mask & XtIMTimer)
XtAppProcessEvent(app_con, (XtInputMask) XtIMTimer);
#if OPT_SESSION_MGT
/*
* Session management events are alternative input events. Deal with
* them in the same way.
*/
else if (input_mask & XtIMAlternateInput)
XtAppProcessEvent(app_con, (XtInputMask) XtIMAlternateInput);
#endif
else
break;
}
/*
* If there's no XEvents, don't wait around...
*/
if ((input_mask & XtIMXEvent) != XtIMXEvent)
return;
do {
/*
* This check makes xterm hang when in mouse hilite tracking mode.
* We simply ignore all events except for those not passed down to
* this function, e.g., those handled in in_put().
*/
if (screen->waitingForTrackInfo) {
Sleep(10);
return;
}
XtAppNextEvent(app_con, &event);
/*
* Hack to get around problems with the toolkit throwing away
* eventing during the exclusive grab of the menu popup. By
* looking at the event ourselves we make sure that we can
* do the right thing.
*/
if (OUR_EVENT(event, EnterNotify)) {
DoSpecialEnterNotify(xw, &event.xcrossing);
} else if (OUR_EVENT(event, LeaveNotify)) {
DoSpecialLeaveNotify(xw, &event.xcrossing);
} else if ((screen->send_mouse_pos == ANY_EVENT_MOUSE
#if OPT_DEC_LOCATOR
|| screen->send_mouse_pos == DEC_LOCATOR
#endif /* OPT_DEC_LOCATOR */
)
&& event.xany.type == MotionNotify
&& event.xcrossing.window == XtWindow(xw)) {
SendMousePosition(xw, &event);
xtermShowPointer(xw, True);
continue;
}
/*
* If the event is interesting (and not a keyboard event), turn the
* mouse pointer back on.
*/
if (screen->hide_pointer) {
if (screen->pointer_mode >= pFocused) {
switch (event.xany.type) {
case MotionNotify:
xtermShowPointer(xw, True);
break;
}
} else {
switch (event.xany.type) {
case KeyPress:
case KeyRelease:
case ButtonPress:
case ButtonRelease:
/* also these... */
case Expose:
case NoExpose:
case PropertyNotify:
case ClientMessage:
break;
default:
xtermShowPointer(xw, True);
break;
}
}
}
if (!event.xany.send_event ||
screen->allowSendEvents ||
((event.xany.type != KeyPress) &&
(event.xany.type != KeyRelease) &&
(event.xany.type != ButtonPress) &&
(event.xany.type != ButtonRelease))) {
XtDispatchEvent(&event);
}
} while (xtermAppPending() & XtIMXEvent);
}
static Cursor
make_hidden_cursor(XtermWidget xw)
{
TScreen *screen = TScreenOf(xw);
Cursor c;
Display *dpy = screen->display;
XFontStruct *fn;
static XColor dummy;
/*
* Prefer nil2 (which is normally available) to "fixed" (which is supposed
* to be "always" available), since it's a smaller glyph in case the
* server insists on drawing _something_.
*/
TRACE(("Ask for nil2 font\n"));
if ((fn = XLoadQueryFont(dpy, "nil2")) == 0) {
TRACE(("...Ask for fixed font\n"));
fn = XLoadQueryFont(dpy, DEFFONT);
}
if (fn != 0) {
/* a space character seems to work as a cursor (dots are not needed) */
c = XCreateGlyphCursor(dpy, fn->fid, fn->fid, 'X', ' ', &dummy, &dummy);
XFreeFont(dpy, fn);
} else {
c = 0;
}
TRACE(("XCreateGlyphCursor ->%#lx\n", c));
return (c);
}
Cursor
make_colored_cursor(unsigned cursorindex, /* index into font */
unsigned long fg, /* pixel value */
unsigned long bg) /* pixel value */
{
TScreen *screen = TScreenOf(term);
Cursor c;
Display *dpy = screen->display;
c = XCreateFontCursor(dpy, cursorindex);
if (c != None) {
recolor_cursor(screen, c, fg, bg);
}
return (c);
}
/* ARGSUSED */
void
HandleKeyPressed(Widget w GCC_UNUSED,
XEvent * event,
String * params GCC_UNUSED,
Cardinal *nparams GCC_UNUSED)
{
TRACE(("Handle insert-seven-bit for %p\n", (void *) w));
Input(term, &event->xkey, False);
}
/* ARGSUSED */
void
HandleEightBitKeyPressed(Widget w GCC_UNUSED,
XEvent * event,
String * params GCC_UNUSED,
Cardinal *nparams GCC_UNUSED)
{
TRACE(("Handle insert-eight-bit for %p\n", (void *) w));
Input(term, &event->xkey, True);
}
/* ARGSUSED */
void
HandleStringEvent(Widget w GCC_UNUSED,
XEvent * event GCC_UNUSED,
String * params,
Cardinal *nparams)
{
if (*nparams != 1)
return;
if ((*params)[0] == '0' && (*params)[1] == 'x' && (*params)[2] != '\0') {
const char *abcdef = "ABCDEF";
const char *xxxxxx;
Char c;
UString p;
unsigned value = 0;
for (p = (UString) (*params + 2); (c = CharOf(x_toupper(*p))) !=
'\0'; p++) {
value *= 16;
if (c >= '0' && c <= '9')
value += (unsigned) (c - '0');
else if ((xxxxxx = strchr(abcdef, c)) != 0)
value += (unsigned) (xxxxxx - abcdef) + 10;
else
break;
}
if (c == '\0') {
Char hexval[2];
hexval[0] = (Char) value;
hexval[1] = 0;
StringInput(term, hexval, (size_t) 1);
}
} else {
StringInput(term, (const Char *) *params, strlen(*params));
}
}
#if OPT_EXEC_XTERM
#ifndef PROCFS_ROOT
#define PROCFS_ROOT "/proc"
#endif
/* ARGSUSED */
void
HandleSpawnTerminal(Widget w GCC_UNUSED,
XEvent * event GCC_UNUSED,
String * params,
Cardinal *nparams)
{
TScreen *screen = TScreenOf(term);
char *child_cwd = NULL;
char *child_exe;
pid_t pid;
/*
* Try to find the actual program which is running in the child process.
* This works for Linux. If we cannot find the program, fall back to the
* xterm program (which is usually adequate). Give up if we are given only
* a relative path to xterm, since that would not always match $PATH.
*/
child_exe = Readlink(PROCFS_ROOT "/self/exe");
if (!child_exe) {
if (strncmp(ProgramName, "./", (size_t) 2)
&& strncmp(ProgramName, "../", (size_t) 3)) {
child_exe = xtermFindShell(ProgramName, True);
} else {
xtermWarning("Cannot exec-xterm given \"%s\"\n", ProgramName);
}
if (child_exe == 0)
return;
}
/*
* Determine the current working directory of the child so that we can
* spawn a new terminal in the same directory.
*
* If we cannot get the CWD of the child, just use our own.
*/
if (screen->pid) {
char child_cwd_link[sizeof(PROCFS_ROOT) + 80];
sprintf(child_cwd_link, PROCFS_ROOT "/%lu/cwd", (unsigned long) screen->pid);
child_cwd = Readlink(child_cwd_link);
}
/* The reaper will take care of cleaning up the child */
pid = fork();
if (pid == -1) {
xtermWarning("Could not fork: %s\n", SysErrorMsg(errno));
} else if (!pid) {
/* We are the child */
if (child_cwd) {
IGNORE_RC(chdir(child_cwd)); /* We don't care if this fails */
}
if (setuid(screen->uid) == -1
|| setgid(screen->gid) == -1) {
xtermWarning("Cannot reset uid/gid\n");
} else {
unsigned myargc = *nparams + 1;
char **myargv = TypeMallocN(char *, myargc + 1);
unsigned n = 0;
myargv[n++] = child_exe;
while (n < myargc) {
myargv[n++] = (char *) *params++;
}
myargv[n] = 0;
execv(child_exe, myargv);
/* If we get here, we've failed */
xtermWarning("exec of '%s': %s\n", child_exe, SysErrorMsg(errno));
}
_exit(0);
}
/* We are the parent; clean up */
if (child_cwd)
free(child_cwd);
free(child_exe);
}
#endif /* OPT_EXEC_XTERM */
/*
* Rather than sending characters to the host, put them directly into our
* input queue. That lets a user have access to any of the control sequences
* for a key binding. This is the equivalent of local function key support.
*
* NOTE: This code does not support the hexadecimal kludge used in
* HandleStringEvent because it prevents us from sending an arbitrary string
* (but it appears in a lot of examples - so we are stuck with it). The
* standard string converter does recognize "\" for newline ("\n") and for
* octal constants (e.g., "\007" for BEL). So we assume the user can make do
* without a specialized converter. (Don't try to use \000, though).
*/
/* ARGSUSED */
void
HandleInterpret(Widget w GCC_UNUSED,
XEvent * event GCC_UNUSED,
String * params,
Cardinal *param_count)
{
if (*param_count == 1) {
const char *value = params[0];
int need = (int) strlen(value);
int used = (int) (VTbuffer->next - VTbuffer->buffer);
int have = (int) (VTbuffer->last - VTbuffer->buffer);
if (have - used + need < BUF_SIZE) {
fillPtyData(term, VTbuffer, value, (int) strlen(value));
TRACE(("Interpret %s\n", value));
VTbuffer->update++;
}
}
}
/*ARGSUSED*/
void
HandleEnterWindow(Widget w GCC_UNUSED,
XtPointer eventdata GCC_UNUSED,
XEvent * event GCC_UNUSED,
Boolean * cont GCC_UNUSED)
{
/* NOP since we handled it above */
TRACE(("HandleEnterWindow ignored\n"));
TRACE_FOCUS(w, event);
}
/*ARGSUSED*/
void
HandleLeaveWindow(Widget w GCC_UNUSED,
XtPointer eventdata GCC_UNUSED,
XEvent * event GCC_UNUSED,
Boolean * cont GCC_UNUSED)
{
/* NOP since we handled it above */
TRACE(("HandleLeaveWindow ignored\n"));
TRACE_FOCUS(w, event);
}
/*ARGSUSED*/
void
HandleFocusChange(Widget w GCC_UNUSED,
XtPointer eventdata GCC_UNUSED,
XEvent * ev,
Boolean * cont GCC_UNUSED)
{
XFocusChangeEvent *event = (XFocusChangeEvent *) ev;
XtermWidget xw = term;
TScreen *screen = TScreenOf(xw);
TRACE(("HandleFocusChange type=%s, mode=%s, detail=%s\n",
visibleEventType(event->type),
visibleNotifyMode(event->mode),
visibleNotifyDetail(event->detail)));
TRACE_FOCUS(xw, event);
if (screen->quiet_grab
&& (event->mode == NotifyGrab || event->mode == NotifyUngrab)) {
/* EMPTY */ ;
} else if ((event->type == FocusIn || event->type == FocusOut)
&& event->detail == NotifyPointer) {
/*
* NotifyPointer is sent to the window where the pointer is, and is
* in addition to events sent to the old/new focus-windows.
*/
/* EMPTY */ ;
} else if (event->type == FocusIn) {
setXUrgency(xw, False);
/*
* NotifyNonlinear only happens (on FocusIn) if the pointer was not in
* one of our windows. Use this to reset a case where one xterm is
* partly obscuring another, and X gets (us) confused about whether the
* pointer was in the window. In particular, this can happen if the
* user is resizing the obscuring window, causing some events to not be
* delivered to the obscured window.
*/
if (event->detail == NotifyNonlinear
&& (screen->select & INWINDOW) != 0) {
unselectwindow(xw, INWINDOW);
}
selectwindow(xw,
((event->detail == NotifyPointer)
? INWINDOW
: FOCUS));
SendFocusButton(xw, event);
} else {
#if OPT_FOCUS_EVENT
if (event->type == FocusOut) {
SendFocusButton(xw, event);
}
#endif
/*
* XGrabKeyboard() will generate NotifyGrab event that we want to
* ignore.
*/
if (event->mode != NotifyGrab) {
unselectwindow(xw,
((event->detail == NotifyPointer)
? INWINDOW
: FOCUS));
}
if (screen->grabbedKbd && (event->mode == NotifyUngrab)) {
Bell(xw, XkbBI_Info, 100);
ReverseVideo(xw);
screen->grabbedKbd = False;
update_securekbd();
}
}
}
static long lastBellTime; /* in milliseconds */
#if defined(HAVE_XKB_BELL_EXT)
static Atom
AtomBell(XtermWidget xw, int which)
{
#define DATA(name) { XkbBI_##name, XkbBN_##name }
static struct {
int value;
const char *name;
} table[] = {
DATA(Info),