/* windows.c --- turning the screen black; dealing with visuals, virtual roots.
- * xscreensaver, Copyright (c) 1991-1997 Jamie Zawinski <jwz@netscape.com>
+ * xscreensaver, Copyright (c) 1991-1998 Jamie Zawinski <jwz@jwz.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
#ifdef VMS
# include <unixlib.h> /* for getpid() */
# include "vms-gtod.h" /* for gettimeofday() */
-# if !defined(HAVE_UNAME) && (__VMS_VER >= 70000000)
-# define HAVE_UNAME 1
-# endif /* !HAVE_UNAME */
#endif /* VMS */
-# ifdef HAVE_UNAME
-# include <sys/utsname.h> /* for uname() */
-# endif /* HAVE_UNAME */
+#ifndef VMS
+# include <pwd.h> /* for getpwuid() */
+#else /* VMS */
+# include "vms-pwd.h"
+#endif /* VMS */
+
+#ifdef HAVE_UNAME
+# include <sys/utsname.h> /* for uname() */
+#endif /* HAVE_UNAME */
#include <stdio.h>
#include <X11/Xproto.h> /* for CARD32 */
# include <X11/extensions/scrnsaver.h>
#endif /* HAVE_MIT_SAVER_EXTENSION */
-
-#ifdef HAVE_XHPDISABLERESET
-# include <X11/XHPlib.h>
-
- /* Calls to XHPDisableReset and XHPEnableReset must be balanced,
- or BadAccess errors occur. (Ok for this to be global, since it
- affects the whole machine, not just the current screen.) */
- Bool hp_locked_p = False;
-
-#endif /* HAVE_XHPDISABLERESET */
+#ifdef HAVE_XF86VMODE
+# include <X11/extensions/xf86vmode.h>
+#endif /* HAVE_XF86VMODE */
/* This file doesn't need the Xt headers, so stub these types out... */
#include "visual.h"
#include "fade.h"
+
extern int kill (pid_t, int); /* signal() is in sys/signal.h... */
Atom XA_VROOT, XA_XSETROOT_ID;
-Atom XA_SCREENSAVER_VERSION, XA_SCREENSAVER_ID;
+Atom XA_SCREENSAVER, XA_SCREENSAVER_VERSION, XA_SCREENSAVER_ID;
Atom XA_SCREENSAVER_TIME;
Button1MotionMask | Button2MotionMask | Button3MotionMask | \
Button4MotionMask | Button5MotionMask | ButtonMotionMask)
-/* I don't really understand Sync vs Async, but these seem to work... */
-#define grab_kbd(dpy,win) \
- XGrabKeyboard ((dpy), (win), True, GrabModeSync, GrabModeAsync, CurrentTime)
-#define grab_mouse(dpy,win,cursor) \
- XGrabPointer ((dpy), (win), True, ALL_POINTER_EVENTS, \
- GrabModeAsync, GrabModeAsync, None, cursor, CurrentTime)
-void
-grab_keyboard_and_mouse (Display *dpy, Window window, Cursor cursor)
+static const char *
+grab_string(int status)
{
- Status status;
- XSync (dpy, False);
+ switch (status)
+ {
+ case GrabSuccess: return "GrabSuccess";
+ case AlreadyGrabbed: return "AlreadyGrabbed";
+ case GrabInvalidTime: return "GrabInvalidTime";
+ case GrabNotViewable: return "GrabNotViewable";
+ case GrabFrozen: return "GrabFrozen";
+ default:
+ {
+ static char foo[255];
+ sprintf(foo, "unknown status: %d", status);
+ return foo;
+ }
+ }
+}
+
+static int
+grab_kbd(saver_info *si, Window w)
+{
+ saver_preferences *p = &si->prefs;
+ int status = XGrabKeyboard (si->dpy, w, True,
+ /* I don't really understand Sync vs Async,
+ but these seem to work... */
+ GrabModeSync, GrabModeAsync,
+ CurrentTime);
+ if (status == GrabSuccess)
+ si->keyboard_grab_window = w;
+
+ if (p->verbose_p)
+ fprintf(stderr, "%s: grabbing keyboard on 0x%x... %s.\n",
+ blurb(), (unsigned long) w, grab_string(status));
+ return status;
+}
+
+
+static int
+grab_mouse (saver_info *si, Window w, Cursor cursor)
+{
+ saver_preferences *p = &si->prefs;
+ int status = XGrabPointer (si->dpy, w, True, ALL_POINTER_EVENTS,
+ GrabModeAsync, GrabModeAsync, w,
+ cursor, CurrentTime);
+ if (status == GrabSuccess)
+ si->mouse_grab_window = w;
+
+ if (p->verbose_p)
+ fprintf(stderr, "%s: grabbing mouse on 0x%x... %s.\n",
+ blurb(), (unsigned long) w, grab_string(status));
+ return status;
+}
+
+
+static void
+ungrab_kbd(saver_info *si)
+{
+ saver_preferences *p = &si->prefs;
+ XUngrabKeyboard(si->dpy, CurrentTime);
+ if (p->verbose_p)
+ fprintf(stderr, "%s: ungrabbing keyboard (was 0x%x).\n", blurb(),
+ (unsigned long) si->keyboard_grab_window);
+ si->keyboard_grab_window = 0;
+}
+
- status = grab_kbd (dpy, window);
- if (status != GrabSuccess)
+static void
+ungrab_mouse(saver_info *si)
+{
+ saver_preferences *p = &si->prefs;
+ XUngrabPointer(si->dpy, CurrentTime);
+ if (p->verbose_p)
+ fprintf(stderr, "%s: ungrabbing mouse (was 0x%x).\n", blurb(),
+ (unsigned long) si->mouse_grab_window);
+ si->mouse_grab_window = 0;
+}
+
+
+static Bool
+grab_keyboard_and_mouse (saver_info *si, Window window, Cursor cursor)
+{
+ Status mstatus, kstatus;
+ XSync (si->dpy, False);
+
+ kstatus = grab_kbd (si, window);
+ if (kstatus != GrabSuccess)
{ /* try again in a second */
sleep (1);
- status = grab_kbd (dpy, window);
- if (status != GrabSuccess)
- fprintf (stderr, "%s: couldn't grab keyboard! (%d)\n",
- progname, status);
+ kstatus = grab_kbd (si, window);
+ if (kstatus != GrabSuccess)
+ fprintf (stderr, "%s: couldn't grab keyboard! (%s)\n",
+ blurb(), grab_string(kstatus));
}
- status = grab_mouse (dpy, window, cursor);
- if (status != GrabSuccess)
+
+ mstatus = grab_mouse (si, window, cursor);
+ if (mstatus != GrabSuccess)
{ /* try again in a second */
sleep (1);
- status = grab_mouse (dpy, window, cursor);
- if (status != GrabSuccess)
- fprintf (stderr, "%s: couldn't grab pointer! (%d)\n",
- progname, status);
+ mstatus = grab_mouse (si, window, cursor);
+ if (mstatus != GrabSuccess)
+ fprintf (stderr, "%s: couldn't grab pointer! (%s)\n",
+ blurb(), grab_string(mstatus));
}
+
+ return (kstatus == GrabSuccess ||
+ mstatus == GrabSuccess);
}
-void
-ungrab_keyboard_and_mouse (Display *dpy)
+static void
+ungrab_keyboard_and_mouse (saver_info *si)
{
- XUngrabPointer (dpy, CurrentTime);
- XUngrabKeyboard (dpy, CurrentTime);
+ ungrab_mouse (si);
+ ungrab_kbd (si);
}
-void
+int
+move_mouse_grab (saver_info *si, Window to, Cursor cursor)
+{
+ Window old = si->mouse_grab_window;
+
+ if (old == 0)
+ return grab_mouse (si, to, cursor);
+ else
+ {
+ saver_preferences *p = &si->prefs;
+ int status;
+
+ XSync (si->dpy, False);
+ XGrabServer (si->dpy); /* ############ DANGER! */
+ XSync (si->dpy, False);
+
+ if (p->verbose_p)
+ fprintf(stderr, "%s: grabbing server...\n", blurb());
+
+ ungrab_mouse (si);
+ status = grab_mouse (si, to, cursor);
+
+ if (status != GrabSuccess) /* Augh! */
+ {
+ sleep (1); /* Note dramatic evil of sleeping
+ with server grabbed. */
+ XSync (si->dpy, False);
+ status = grab_mouse (si, to, cursor);
+ }
+
+ if (status != GrabSuccess) /* Augh! Try to get the old one back... */
+ grab_mouse (si, to, cursor);
+
+ XUngrabServer (si->dpy);
+ XSync (si->dpy, False); /* ###### (danger over) */
+
+ if (p->verbose_p)
+ fprintf(stderr, "%s: ungrabbing server.\n", blurb());
+
+ return status;
+ }
+}
+
+
+/* Prints an error message to stderr and returns True if there is another
+ xscreensaver running already. Silently returns False otherwise. */
+Bool
ensure_no_screensaver_running (Display *dpy, Screen *screen)
{
+ Bool status = 0;
int i;
Window root = RootWindowOfScreen (screen);
Window root2, parent, *kids;
fprintf (stderr,
"%s: already running on display %s (window 0x%x)\n from process %s.\n",
- progname, DisplayString (dpy), (int) kids [i], id);
- exit (1);
+ blurb(), DisplayString (dpy), (int) kids [i], id);
+ status = True;
}
}
if (kids) XFree ((char *) kids);
XSync (dpy, False);
XSetErrorHandler (old_handler);
+ return status;
}
#if 0
if (p->verbose_p)
fprintf (stderr,
- "%s: storing XA_VROOT = 0x%x (%s) = 0x%x (%s)\n", progname,
+ "%s: storing XA_VROOT = 0x%x (%s) = 0x%x (%s)\n", blurb(),
win,
(win == screensaver_window ? "ScreenSaver" :
(win == real_vroot ? "VRoot" :
{
#if 0
if (p->verbose_p)
- fprintf (stderr, "%s: removing XA_VROOT from 0x%x (%s)\n", progname, win,
+ fprintf (stderr, "%s: removing XA_VROOT from 0x%x (%s)\n", blurb(), win,
(win == screensaver_window ? "ScreenSaver" :
(win == real_vroot ? "VRoot" :
(win == real_vroot_value ? "Vroot_value" : "???"))));
nitems == 1 && bytesafter == 0)
{
if (verbose_p)
- printf ("%s: destroying xsetroot data (0x%lX).\n",
- progname, *dataP);
+ fprintf (stderr, "%s: destroying xsetroot data (0x%lX).\n",
+ blurb(), *dataP);
XKillClient (dpy, *dataP);
}
else
fprintf (stderr, "%s: deleted unrecognised _XSETROOT_ID property: \n\
%lu, %lu; type: %lu, format: %d, nitems: %lu, bytesafter %ld\n",
- progname, (unsigned long) dataP, (dataP ? *dataP : 0), type,
+ blurb(), (unsigned long) dataP, (dataP ? *dataP : 0), type,
format, nitems, bytesafter);
}
}
Window root = RootWindowOfScreen (screen);
Window root2, parent, *kids;
unsigned int nkids;
+ XErrorHandler old_handler;
+
+ /* It's possible that a window might be deleted between our call to
+ XQueryTree() and our call to XGetWindowProperty(). Don't die if
+ that happens (but just ignore that window, it's not the one we're
+ interested in anyway.)
+ */
+ XSync (dpy, False);
+ old_handler = XSetErrorHandler (BadWindow_ehandler);
+ XSync (dpy, False);
ssi->real_vroot = 0;
ssi->real_vroot_value = 0;
if (*vrootP == ssi->screensaver_window) abort ();
fprintf (stderr,
"%s: more than one virtual root window found (0x%x and 0x%x).\n",
- progname, (int) ssi->real_vroot, (int) kids [i]);
+ blurb(), (int) ssi->real_vroot, (int) kids [i]);
exit (1);
}
ssi->real_vroot = kids [i];
ssi->real_vroot_value = *vrootP;
}
+ XSync (dpy, False);
+ XSetErrorHandler (old_handler);
+ XSync (dpy, False);
+
if (ssi->real_vroot)
{
handle_signals (si, True);
saver_info *si = ssi->global;
saver_preferences *p = &si->prefs;
if (p->verbose_p && ssi->real_vroot)
- printf ("%s: restoring __SWM_VROOT property on the real vroot (0x%lx).\n",
- progname, (unsigned long) ssi->real_vroot);
+ fprintf (stderr,
+ "%s: restoring __SWM_VROOT property on the real vroot (0x%lx).\n",
+ blurb(), (unsigned long) ssi->real_vroot);
remove_vroot_property (si->dpy, ssi->screensaver_window);
if (ssi->real_vroot)
{
signal (sig, SIG_DFL);
if (restore_real_vroot_1 (si))
fprintf (real_stderr, "\n%s: %s intercepted, vroot restored.\n",
- progname, signal_name(sig));
+ blurb(), signal_name(sig));
kill (getpid (), sig);
}
if (((long) signal (sig, restore_real_vroot_handler)) == -1L)
{
char buf [255];
- sprintf (buf, "%s: couldn't catch %s", progname, signal_name(sig));
+ sprintf (buf, "%s: couldn't catch %s", blurb(), signal_name(sig));
perror (buf);
- saver_exit (si, 1);
+ saver_exit (si, 1, 0);
}
}
}
handle_signals (saver_info *si, Bool on_p)
{
#if 0
- if (on_p) printf ("handling signals\n");
- else printf ("unhandling signals\n");
+ if (on_p) fprintf (stderr, "handling signals\n");
+ else fprintf (stderr, "unhandling signals\n");
#endif
catch_signal (si, SIGHUP, on_p);
}
void
-saver_exit (saver_info *si, int status)
+saver_exit (saver_info *si, int status, const char *dump_core_reason)
{
saver_preferences *p = &si->prefs;
static Bool exiting = False;
+ Bool bugp;
Bool vrs;
if (exiting)
emergency_kill_subproc (si);
if (vrs && (p->verbose_p || status != 0))
- fprintf (real_stderr, "%s: vroot restored, exiting.\n", progname);
+ fprintf (real_stderr, "%s: vroot restored, exiting.\n", blurb());
else if (p->verbose_p)
- fprintf (real_stderr, "%s: no vroot to restore; exiting.\n", progname);
+ fprintf (real_stderr, "%s: no vroot to restore; exiting.\n", blurb());
fflush(real_stdout);
else if (status == 1) status = -1;
#endif
-#ifdef DEBUG
- if (si->prefs.debug_p)
- /* Do this to drop a core file, so that we can get a stack trace. */
- abort();
-#endif
+ bugp = !!dump_core_reason;
+
+ if (si->prefs.debug_p && !dump_core_reason)
+ dump_core_reason = "because of -debug";
+
+ if (dump_core_reason)
+ {
+ /* Note that the Linux man page for setuid() says If uid is
+ different from the old effective uid, the process will be
+ forbidden from leaving core dumps.
+ */
+ char cwd[4096]; /* should really be PATH_MAX, but who cares. */
+ cwd[0] = 0;
+ fprintf(real_stderr, "%s: dumping core (%s)\n", blurb(),
+ dump_core_reason);
+
+ if (bugp)
+ fprintf(real_stderr,
+ "%s: see http://www.jwz.org/xscreensaver/bugs.html\n"
+ "\t\tfor bug reporting information.\n\n",
+ blurb());
+
+# if defined(HAVE_GETCWD)
+ if (!getcwd (cwd, sizeof(cwd)))
+# elif defined(HAVE_GETWD)
+ if (!getwd (cwd))
+# endif
+ strcpy(cwd, "unknown.");
+
+ fprintf (real_stderr, "%s: current directory is %s\n", blurb(), cwd);
+ describe_uids (si, real_stderr);
+
+ /* Do this to drop a core file, so that we can get a stack trace. */
+ abort();
+ }
exit (status);
}
return (xgwa.screen != 0);
}
+static void
+store_saver_id (saver_screen_info *ssi)
+{
+ XClassHint class_hints;
+ saver_info *si = ssi->global;
+ unsigned long pid = (unsigned long) getpid ();
+ char buf[20];
+ struct passwd *p = getpwuid (getuid ());
+ const char *name, *host;
+ char *id;
+
+ /* First store the name and class on the window.
+ */
+ class_hints.res_name = progname;
+ class_hints.res_class = progclass;
+ XSetClassHint (si->dpy, ssi->screensaver_window, &class_hints);
+ XStoreName (si->dpy, ssi->screensaver_window, "screensaver");
+
+ /* Then store the xscreensaver version number.
+ */
+ XChangeProperty (si->dpy, ssi->screensaver_window,
+ XA_SCREENSAVER_VERSION,
+ XA_STRING, 8, PropModeReplace,
+ (unsigned char *) si->version,
+ strlen (si->version));
+
+ /* Now store the XSCREENSAVER_ID property, that says what user and host
+ xscreensaver is running as.
+ */
+
+ if (p && p->pw_name && *p->pw_name)
+ name = p->pw_name;
+ else if (p)
+ {
+ sprintf (buf, "%lu", (unsigned long) p->pw_uid);
+ name = buf;
+ }
+ else
+ name = "???";
+
+# if defined(HAVE_UNAME)
+ {
+ struct utsname uts;
+ if (uname (&uts) < 0)
+ host = "???";
+ else
+ host = uts.nodename;
+ }
+# elif defined(VMS)
+ host = getenv("SYS$NODE");
+# else /* !HAVE_UNAME && !VMS */
+ host = "???";
+# endif /* !HAVE_UNAME && !VMS */
+
+ id = (char *) malloc (strlen(name) + strlen(host) + 50);
+ sprintf (id, "%lu (%s@%s)", pid, name, host);
+
+ XChangeProperty (si->dpy, ssi->screensaver_window,
+ XA_SCREENSAVER_ID, XA_STRING,
+ 8, PropModeReplace,
+ (unsigned char *) id, strlen (id));
+ free (id);
+}
+
+
+/* Returns the area of the screen which the xscreensaver window should cover.
+ Normally this is the whole screen, but if the X server's root window is
+ actually larger than the monitor's displayable area, then we want to
+ operate in the currently-visible portion of the desktop instead.
+ */
+void
+get_screen_viewport (saver_screen_info *ssi,
+ int *x_ret, int *y_ret,
+ int *w_ret, int *h_ret,
+ Bool verbose_p)
+{
+ int w = WidthOfScreen (ssi->screen);
+ int h = HeightOfScreen (ssi->screen);
+
+#ifdef HAVE_XF86VMODE
+ saver_info *si = ssi->global;
+ int screen_no = screen_number (ssi->screen);
+ int op, event, error;
+ int dot;
+ XF86VidModeModeLine ml;
+ int x, y;
+
+ /* Check for Xinerama first, because the VidModeExtension is broken
+ when Xinerama is present. Wheee!
+ */
+
+ if (!XQueryExtension (si->dpy, "XINERAMA", &op, &event, &error) &&
+ XF86VidModeQueryExtension (si->dpy, &event, &error) &&
+ XF86VidModeGetModeLine (si->dpy, screen_no, &dot, &ml) &&
+ XF86VidModeGetViewPort (si->dpy, screen_no, &x, &y))
+ {
+ char msg[512];
+ *x_ret = x;
+ *y_ret = y;
+ *w_ret = ml.hdisplay;
+ *h_ret = ml.vdisplay;
+
+ if (*x_ret == 0 && *y_ret == 0 && *w_ret == w && *h_ret == h)
+ /* There is no viewport -- the screen does not scroll. */
+ return;
+
+
+ /* Apparently some versions of XFree86 return nonsense here!
+ I've had reports of 1024x768 viewports at -1936862040, -1953705044.
+ So, sanity-check the values and give up if they are out of range.
+ */
+ if (*x_ret < 0 || *x_ret >= w ||
+ *y_ret < 0 || *y_ret >= h ||
+ *w_ret <= 0 || *w_ret > w ||
+ *h_ret <= 0 || *h_ret > h)
+ {
+ static int warned_once = 0;
+ if (!warned_once)
+ {
+ fprintf (stderr, "\n"
+ "%s: X SERVER BUG: %dx%d viewport at %d,%d is impossible.\n"
+ "%s: The XVidMode server extension is returning nonsense.\n"
+ "%s: Please report this bug to your X server vendor.\n\n",
+ blurb(), *w_ret, *h_ret, *x_ret, *y_ret,
+ blurb(), blurb());
+ warned_once = 1;
+ }
+ *x_ret = 0;
+ *y_ret = 0;
+ *w_ret = w;
+ *h_ret = h;
+ return;
+ }
+
+
+ sprintf (msg, "%s: vp is %dx%d+%d+%d",
+ blurb(), *w_ret, *h_ret, *x_ret, *y_ret);
+
+
+ /* Apparently, though the server stores the X position in increments of
+ 1 pixel, it will only make changes to the *display* in some other
+ increment. With XF86_SVGA on a Thinkpad, the display only updates
+ in multiples of 8 pixels when in 8-bit mode, and in multiples of 4
+ pixels in 16-bit mode. I don't know what it does in 24- and 32-bit
+ mode, because I don't have enough video memory to find out.
+
+ I consider it a bug that XF86VidModeGetViewPort() is telling me the
+ server's *target* scroll position rather than the server's *actual*
+ scroll position. David Dawes agrees, and says they may fix this in
+ XFree86 4.0, but it's notrivial.
+
+ He also confirms that this behavior is server-dependent, so the
+ actual scroll position cannot be reliably determined by the client.
+ So... that means the only solution is to provide a ``sandbox''
+ around the blackout window -- we make the window be up to N pixels
+ larger than the viewport on both the left and right sides. That
+ means some part of the outer edges of each hack might not be
+ visible, but screw it.
+
+ I'm going to guess that 16 pixels is enough, and that the Y dimension
+ doesn't have this problem.
+
+ The drawback of doing this, of course, is that some of the screenhacks
+ will still look pretty stupid -- for example, "slidescreen" will cut
+ off the left and right edges of the grid, etc.
+ */
+# define FUDGE 16
+ if (x > 0 && x < w - ml.hdisplay) /* not at left edge or right edge */
+ {
+ /* Round X position down to next lower multiple of FUDGE.
+ Increase width by 2*FUDGE in case some server rounds up.
+ */
+ *x_ret = ((x - 1) / FUDGE) * FUDGE;
+ *w_ret += (FUDGE * 2);
+ }
+# undef FUDGE
+
+ if (*x_ret != x ||
+ *y_ret != y ||
+ *w_ret != ml.hdisplay ||
+ *h_ret != ml.vdisplay)
+ sprintf (msg + strlen(msg), "; fudged to %dx%d+%d+%d",
+ *w_ret, *h_ret, *x_ret, *y_ret);
+
+ if (verbose_p)
+ fprintf (stderr, "%s.\n", msg);
+
+ return;
+ }
+
+#endif /* HAVE_XF86VMODE */
+
+ *x_ret = 0;
+ *y_ret = 0;
+ *w_ret = w;
+ *h_ret = h;
+}
+
+
static void
initialize_screensaver_window_1 (saver_screen_info *ssi)
{
saver_info *si = ssi->global;
saver_preferences *p = &si->prefs;
+ Bool install_cmap_p = ssi->install_cmap_p; /* not p->install_cmap_p */
/* This resets the screensaver window as fully as possible, since there's
no way of knowing what some random client may have done to us in the
its own set of problems...
*/
XColor black;
- XClassHint class_hints;
XSetWindowAttributes attrs;
unsigned long attrmask;
- int width = WidthOfScreen (ssi->screen);
- int height = HeightOfScreen (ssi->screen);
- char id [2048];
+ int x, y, width, height;
static Bool printed_visual_info = False; /* only print the message once. */
+ get_screen_viewport (ssi, &x, &y, &width, &height,
+ (p->verbose_p && !si->screen_blanked_p));
+
black.red = black.green = black.blue = 0;
if (ssi->cmap == DefaultColormapOfScreen (ssi->screen))
ssi->cmap = 0;
- if (p->install_cmap_p ||
- ssi->current_visual != DefaultVisualOfScreen (ssi->screen))
+ if (ssi->current_visual != DefaultVisualOfScreen (ssi->screen))
+ /* It's not the default visual, so we have no choice but to install. */
+ install_cmap_p = True;
+
+ if (install_cmap_p)
{
if (! ssi->cmap)
{
- ssi->cmap = XCreateColormap (si->dpy, RootWindowOfScreen (ssi->screen),
+ ssi->cmap = XCreateColormap (si->dpy,
+ RootWindowOfScreen (ssi->screen),
ssi->current_visual, AllocNone);
if (! XAllocColor (si->dpy, ssi->cmap, &black)) abort ();
ssi->black_pixel = black.pixel;
}
else
{
+ Colormap def_cmap = DefaultColormapOfScreen (ssi->screen);
if (ssi->cmap)
{
XFreeColors (si->dpy, ssi->cmap, &ssi->black_pixel, 1, 0);
- if (ssi->cmap != ssi->demo_cmap)
+ if (ssi->cmap != ssi->demo_cmap &&
+ ssi->cmap != def_cmap)
XFreeColormap (si->dpy, ssi->cmap);
}
- ssi->cmap = DefaultColormapOfScreen (ssi->screen);
+ ssi->cmap = def_cmap;
ssi->black_pixel = BlackPixelOfScreen (ssi->screen);
}
-#if 0
- if (cmap2)
- {
- XFreeColormap (si->dpy, cmap2);
- cmap2 = 0;
- }
-
- if (p->fade_p)
- {
- cmap2 = copy_colormap (si->screen, ssi->current_visual, ssi->cmap, 0);
- if (! cmap2)
- p->fade_p = p->unfade_p = 0;
- }
-#endif
-
attrmask = (CWOverrideRedirect | CWEventMask | CWBackingStore | CWColormap |
CWBackPixel | CWBackingPixel | CWBorderPixel);
attrs.override_redirect = True;
attrs.backing_pixel = ssi->black_pixel;
attrs.border_pixel = ssi->black_pixel;
-#ifdef DEBUG
if (p->debug_p) width = width / 2;
-#endif /* DEBUG */
if (!p->verbose_p || printed_visual_info)
;
else if (ssi->current_visual == DefaultVisualOfScreen (ssi->screen))
{
- fprintf (stderr, "%s: using default visual ", progname);
- describe_visual (stderr, ssi->screen, ssi->current_visual);
+ fprintf (stderr, "%s: using default visual ", blurb());
+ describe_visual (stderr, ssi->screen, ssi->current_visual,
+ install_cmap_p);
}
else
{
- fprintf (stderr, "%s: using visual: ", progname);
- describe_visual (stderr, ssi->screen, ssi->current_visual);
- fprintf (stderr, "%s: default visual: ", progname);
+ fprintf (stderr, "%s: using visual: ", blurb());
+ describe_visual (stderr, ssi->screen, ssi->current_visual,
+ install_cmap_p);
+ fprintf (stderr, "%s: default visual: ", blurb());
describe_visual (stderr, ssi->screen,
- DefaultVisualOfScreen (ssi->screen));
+ DefaultVisualOfScreen (ssi->screen),
+ ssi->install_cmap_p);
}
printed_visual_info = True;
#ifdef HAVE_MIT_SAVER_EXTENSION
- if (p->use_mit_saver_extension)
+ if (si->using_mit_saver_extension)
{
XScreenSaverInfo *info;
Window root = RootWindowOfScreen (ssi->screen);
{
XWindowChanges changes;
unsigned int changesmask = CWX|CWY|CWWidth|CWHeight|CWBorderWidth;
- changes.x = 0;
- changes.y = 0;
+ changes.x = x;
+ changes.y = y;
changes.width = width;
changes.height = height;
changes.border_width = 0;
else
{
ssi->screensaver_window =
- XCreateWindow (si->dpy, RootWindowOfScreen (ssi->screen), 0, 0,
- width, height, 0, ssi->current_depth, InputOutput,
+ XCreateWindow (si->dpy, RootWindowOfScreen (ssi->screen),
+ x, y, width, height,
+ 0, ssi->current_depth, InputOutput,
ssi->current_visual, attrmask, &attrs);
+
reset_stderr (ssi);
store_activate_time(si, True);
if (p->verbose_p)
fprintf (stderr, "%s: saver window is 0x%lx.\n",
- progname, (unsigned long) ssi->screensaver_window);
+ blurb(), (unsigned long) ssi->screensaver_window);
}
-#ifdef HAVE_MIT_SAVER_EXTENSION
- if (!p->use_mit_saver_extension ||
- window_exists_p (si->dpy, ssi->screensaver_window))
- /* When using the MIT-SCREEN-SAVER extension, the window pointed to
- by screensaver_window only exists while the saver is active.
- So we must be careful to only try and manipulate it while it
- exists...
- (#### The above comment would be true if the MIT extension actually
- worked, but it's not true today -- see `server_mit_saver_window'.)
- */
-#endif /* HAVE_MIT_SAVER_EXTENSION */
- {
- class_hints.res_name = progname;
- class_hints.res_class = progclass;
- XSetClassHint (si->dpy, ssi->screensaver_window, &class_hints);
- XStoreName (si->dpy, ssi->screensaver_window, "screensaver");
- XChangeProperty (si->dpy, ssi->screensaver_window,
- XA_SCREENSAVER_VERSION,
- XA_STRING, 8, PropModeReplace,
- (unsigned char *) si->version,
- strlen (si->version));
-
- sprintf (id, "%lu on host ", (unsigned long) getpid ());
-# if defined(HAVE_UNAME)
- {
- struct utsname uts;
- if (uname (&uts) < 0)
- strcat (id, "???");
- else
- strcat (id, uts.nodename);
- }
-# elif defined(VMS)
- strcat (id, getenv("SYS$NODE"));
-# else /* !HAVE_UNAME && !VMS */
- strcat (id, "???");
-# endif /* !HAVE_UNAME && !VMS */
+ store_saver_id (ssi);
- XChangeProperty (si->dpy, ssi->screensaver_window,
- XA_SCREENSAVER_ID, XA_STRING,
- 8, PropModeReplace, (unsigned char *) id, strlen (id));
+ if (!ssi->cursor)
+ {
+ Pixmap bit;
+ bit = XCreatePixmapFromBitmapData (si->dpy, ssi->screensaver_window,
+ "\000", 1, 1,
+ BlackPixelOfScreen (ssi->screen),
+ BlackPixelOfScreen (ssi->screen),
+ 1);
+ ssi->cursor = XCreatePixmapCursor (si->dpy, bit, bit, &black, &black,
+ 0, 0);
+ XFreePixmap (si->dpy, bit);
+ }
- if (!ssi->cursor)
- {
- Pixmap bit;
- bit = XCreatePixmapFromBitmapData (si->dpy, ssi->screensaver_window,
- "\000", 1, 1,
- BlackPixelOfScreen (ssi->screen),
- BlackPixelOfScreen (ssi->screen),
- 1);
- ssi->cursor = XCreatePixmapCursor (si->dpy, bit, bit, &black, &black,
- 0, 0);
- XFreePixmap (si->dpy, bit);
- }
+ XSetWindowBackground (si->dpy, ssi->screensaver_window, ssi->black_pixel);
- XSetWindowBackground (si->dpy, ssi->screensaver_window,
- ssi->black_pixel);
- if (si->demo_mode_p)
- XUndefineCursor (si->dpy, ssi->screensaver_window);
- else
- XDefineCursor (si->dpy, ssi->screensaver_window, ssi->cursor);
- }
+ if (si->demoing_p)
+ XUndefineCursor (si->dpy, ssi->screensaver_window);
+ else
+ XDefineCursor (si->dpy, ssi->screensaver_window, ssi->cursor);
}
void
saver_preferences *p = &si->prefs;
int i;
- initialize_screensaver_window (si);
+ if (si->demoing_p)
+ inhibit_fade = True;
+
+ if (si->emergency_lock_p)
+ inhibit_fade = True;
+
+ if (!dont_clear)
+ initialize_screensaver_window (si);
+
reset_watchdog_timer (si, True);
- if (p->fade_p && !inhibit_fade && !si->demo_mode_p)
+ if (p->fade_p && si->fading_possible_p && !inhibit_fade)
{
- int grabbed = -1;
+ Window *current_windows = (Window *)
+ calloc(sizeof(Window), si->nscreens);
Colormap *current_maps = (Colormap *)
calloc(sizeof(Colormap), si->nscreens);
for (i = 0; i < si->nscreens; i++)
{
saver_screen_info *ssi = &si->screens[i];
+ current_windows[i] = ssi->screensaver_window;
current_maps[i] = (between_hacks_p
? ssi->cmap
: DefaultColormapOfScreen (ssi->screen));
+ /* Ensure that the default background of the window is really black,
+ not a pixmap or something. (This does not clear the window.) */
+ XSetWindowBackground (si->dpy, ssi->screensaver_window,
+ ssi->black_pixel);
}
- if (p->verbose_p) fprintf (stderr, "%s: fading... ", progname);
+ if (p->verbose_p) fprintf (stderr, "%s: fading...\n", blurb());
- XGrabServer (si->dpy);
+ XGrabServer (si->dpy); /* ############ DANGER! */
- for (i = 0; i < si->nscreens; i++)
- {
- saver_screen_info *ssi = &si->screens[i];
-
- /* grab and blacken mouse on the root window (saver not mapped yet)
- */
- if (grabbed != GrabSuccess)
- grabbed = grab_mouse (si->dpy, ssi->screensaver_window,
- (si->demo_mode_p ? 0 : ssi->cursor));
+ /* Clear the stderr layer on each screen.
+ */
+ if (!dont_clear)
+ for (i = 0; i < si->nscreens; i++)
+ {
+ saver_screen_info *ssi = &si->screens[i];
+ if (ssi->stderr_overlay_window)
+ /* Do this before the fade, since the stderr cmap won't fade
+ even if we uninstall it (beats me...) */
+ clear_stderr (ssi);
+ }
- if (!dont_clear || ssi->stderr_overlay_window)
- /* Do this before the fade, since the stderr cmap won't fade
- even if we uninstall it (beats me...) */
- clear_stderr (ssi);
- }
+ /* Note! The server is grabbed, and this will take several seconds
+ to complete! */
+ fade_screens (si->dpy, current_maps, current_windows,
+ p->fade_seconds/1000, p->fade_ticks, True, !dont_clear);
- fade_screens (si->dpy, current_maps, p->fade_seconds, p->fade_ticks,
- True);
+ free(current_maps);
+ free(current_windows);
+ current_maps = 0;
+ current_windows = 0;
- if (p->verbose_p) fprintf (stderr, "fading done.\n");
+ if (p->verbose_p) fprintf (stderr, "%s: fading done.\n", blurb());
+#ifdef HAVE_MIT_SAVER_EXTENSION
for (i = 0; i < si->nscreens; i++)
{
saver_screen_info *ssi = &si->screens[i];
- if (!dont_clear)
- XClearWindow (si->dpy, ssi->screensaver_window);
- XMapRaised (si->dpy, ssi->screensaver_window);
-
-#ifdef HAVE_MIT_SAVER_EXTENSION
if (ssi->server_mit_saver_window &&
window_exists_p (si->dpy, ssi->server_mit_saver_window))
XUnmapWindow (si->dpy, ssi->server_mit_saver_window);
-#endif /* HAVE_MIT_SAVER_EXTENSION */
-
- /* Once the saver window is up, restore the colormap.
- (The "black" pixels of the two colormaps are compatible.) */
- if (ssi->cmap)
- XInstallColormap (si->dpy, ssi->cmap);
}
+#endif /* HAVE_MIT_SAVER_EXTENSION */
- if (grabbed == GrabSuccess)
- XUngrabPointer (si->dpy, CurrentTime);
XUngrabServer (si->dpy);
+ XSync (si->dpy, False); /* ###### (danger over) */
}
else
{
}
}
-void
+Bool
blank_screen (saver_info *si)
{
int i;
+ Bool ok;
+
+ /* Note: we do our grabs on the root window, not on the screensaver window.
+ If we grabbed on the saver window, then the demo mode and lock dialog
+ boxes wouldn't get any events.
+ */
+ ok = grab_keyboard_and_mouse (si,
+ /*si->screens[0].screensaver_window,*/
+ RootWindowOfScreen(si->screens[0].screen),
+ (si->demoing_p
+ ? 0
+ : si->screens[0].cursor));
+
+
+ if (si->using_mit_saver_extension || si->using_sgi_saver_extension)
+ /* If we're using a server extension, then failure to get a grab is
+ not a big deal -- even without the grab, we will still be able
+ to un-blank when there is user activity, since the server will
+ tell us. */
+ ok = True;
+
+ if (!ok)
+ return False;
+
for (i = 0; i < si->nscreens; i++)
{
saver_screen_info *ssi = &si->screens[i];
store_vroot_property (si->dpy,
ssi->screensaver_window,
ssi->screensaver_window);
+
+#ifdef HAVE_XF86VMODE
+ {
+ int ev, er;
+ if (!XF86VidModeQueryExtension (si->dpy, &ev, &er) ||
+ !XF86VidModeGetViewPort (si->dpy, i,
+ &ssi->blank_vp_x,
+ &ssi->blank_vp_y))
+ ssi->blank_vp_x = ssi->blank_vp_y = -1;
+ }
+#endif /* HAVE_XF86VMODE */
}
store_activate_time (si, si->screen_blanked_p);
raise_window (si, False, False, False);
- /* #### */
- grab_keyboard_and_mouse (si->dpy, si->screens[0].screensaver_window,
- (si->demo_mode_p ? 0 : si->screens[0].cursor));
-#ifdef HAVE_XHPDISABLERESET
- if (si->locked_p && !hp_locked_p)
- {
- XHPDisableReset (si->dpy); /* turn off C-Sh-Reset */
- hp_locked_p = True;
- }
-#endif
si->screen_blanked_p = True;
+ si->last_wall_clock_time = 0;
+
+ return True;
}
void
unblank_screen (saver_info *si)
{
saver_preferences *p = &si->prefs;
- int i, j;
+ Bool unfade_p = (si->fading_possible_p && p->unfade_p);
+ int i;
+
+ monitor_power_on (si);
store_activate_time (si, True);
reset_watchdog_timer (si, False);
- if (p->unfade_p && !si->demo_mode_p)
+ if (si->demoing_p)
+ unfade_p = False;
+
+ if (unfade_p)
{
- int grabbed = -1;
- int extra_cmaps = 4;
- int ncmaps = si->nscreens * (extra_cmaps + 1);
- Colormap *cmaps = (Colormap *) calloc(sizeof(Colormap), ncmaps);
+ Window *current_windows = (Window *)
+ calloc(sizeof(Window), si->nscreens);
- if (p->verbose_p) fprintf (stderr, "%s: unfading... ", progname);
+ for (i = 0; i < si->nscreens; i++)
+ {
+ saver_screen_info *ssi = &si->screens[i];
+ current_windows[i] = ssi->screensaver_window;
+ /* Ensure that the default background of the window is really black,
+ not a pixmap or something. (This does not clear the window.) */
+ XSetWindowBackground (si->dpy, ssi->screensaver_window,
+ ssi->black_pixel);
+ }
- /* Fake out SGI's multi-colormap hardware; see utils/fade.c
- for an explanation. */
- for (i = 0; i < ncmaps; i += (extra_cmaps + 1))
- for (j = 0; j < (extra_cmaps + 1); j++)
- {
- cmaps[i+j] = XCreateColormap (si->dpy,
- RootWindow (si->dpy, i),
- DefaultVisual(si->dpy, i),
- AllocAll);
- if (cmaps[i+j])
- {
- blacken_colormap (ScreenOfDisplay(si->dpy, i), cmaps[i+j]);
- XInstallColormap (si->dpy, cmaps[i+j]);
- }
- }
+ if (p->verbose_p) fprintf (stderr, "%s: unfading...\n", blurb());
- XGrabServer (si->dpy);
+
+ XSync (si->dpy, False);
+ XGrabServer (si->dpy); /* ############ DANGER! */
+ XSync (si->dpy, False);
+
+ /* Clear the stderr layer on each screen.
+ */
for (i = 0; i < si->nscreens; i++)
{
saver_screen_info *ssi = &si->screens[i];
- if (grabbed != GrabSuccess)
- grabbed = grab_mouse (si->dpy, RootWindowOfScreen (ssi->screen),
- 0);
- XUnmapWindow (si->dpy, ssi->screensaver_window);
clear_stderr (ssi);
}
+
XUngrabServer (si->dpy);
+ XSync (si->dpy, False); /* ###### (danger over) */
- fade_screens (si->dpy, 0, p->fade_seconds, p->fade_ticks, False);
- for (i = 0; i < ncmaps; i++)
- if (cmaps[i]) XFreeColormap (si->dpy, cmaps[i]);
- free (cmaps);
+ fade_screens (si->dpy, 0, current_windows,
+ p->fade_seconds/1000, p->fade_ticks,
+ False, False);
- if (p->verbose_p) fprintf (stderr, "unfading done.\n");
- if (grabbed == GrabSuccess)
- XUngrabPointer (si->dpy, CurrentTime);
+ free(current_windows);
+ current_windows = 0;
+
+ if (p->verbose_p) fprintf (stderr, "%s: unfading done.\n", blurb());
}
else
{
store_activate_time(si, False); /* store unblank time */
- ungrab_keyboard_and_mouse (si->dpy);
+ ungrab_keyboard_and_mouse (si);
restore_real_vroot (si);
-#ifdef HAVE_XHPDISABLERESET
- if (hp_locked_p)
- {
- XHPEnableReset (si->dpy); /* turn C-Sh-Reset back on */
- hp_locked_p = False;
- }
-#endif
+ /* Unmap the windows a second time, dammit -- just to avoid a race
+ with the screen-grabbing hacks. (I'm not sure if this is really
+ necessary; I'm stabbing in the dark now.)
+ */
+ for (i = 0; i < si->nscreens; i++)
+ XUnmapWindow (si->dpy, si->screens[i].screensaver_window);
si->screen_blanked_p = False;
+ si->last_wall_clock_time = 0;
}
{
saver_info *si = ssi->global;
saver_preferences *p = &si->prefs;
- Visual *new_v;
+ Bool install_cmap_p = p->install_cmap_p;
+ Bool was_installed_p = (ssi->cmap != DefaultColormapOfScreen(ssi->screen));
+ Visual *new_v = 0;
Bool got_it;
if (visual_name && *visual_name)
- new_v = get_visual (ssi->screen, visual_name, True, False);
+ {
+ if (!strcmp(visual_name, "default-i"))
+ {
+ visual_name = "default";
+ install_cmap_p = True;
+ }
+ else if (!strcmp(visual_name, "default-n"))
+ {
+ visual_name = "default";
+ install_cmap_p = False;
+ }
+#ifdef DAEMON_USE_GL
+ else if (!strcmp(visual_name, "gl") ||
+ !strcmp(visual_name, "GL"))
+ {
+ new_v = get_gl_visual (ssi->screen);
+ if (!new_v && p->verbose_p)
+ fprintf (stderr, "%s: no GL visuals.\n", progname);
+ }
+#endif /* DAEMON_USE_GL */
+
+ if (!new_v)
+ new_v = get_visual (ssi->screen, visual_name, True, False);
+ }
else
- new_v = ssi->default_visual;
+ {
+ new_v = ssi->default_visual;
+ }
got_it = !!new_v;
- if (new_v && ssi->current_visual != new_v)
+ if (new_v && new_v != DefaultVisualOfScreen(ssi->screen))
+ /* It's not the default visual, so we have no choice but to install. */
+ install_cmap_p = True;
+
+ ssi->install_cmap_p = install_cmap_p;
+
+ if (new_v &&
+ ((ssi->current_visual != new_v) ||
+ (install_cmap_p != was_installed_p)))
{
Colormap old_c = ssi->cmap;
Window old_w = ssi->screensaver_window;
if (p->verbose_p)
{
+ fprintf (stderr, "%s: switching to visual ", blurb());
+ describe_visual (stderr, ssi->screen, new_v, install_cmap_p);
#if 0
- fprintf (stderr, "%s: switching visuals\tfrom: ", progname);
- describe_visual (stderr, ssi->screen, ssi->current_visual);
- fprintf (stderr, "\t\t\t\tto: ");
- describe_visual (stderr, ssi->screen, new_v);
-#else
- fprintf (stderr, "%s: switching to visual ", progname);
- describe_visual (stderr, ssi->screen, new_v);
+ fprintf (stderr, "%s: from ", blurb());
+ describe_visual (stderr, ssi->screen, ssi->current_visual,
+ was_installed_p);
#endif
}
ssi->screensaver_window = 0;
initialize_screensaver_window_1 (ssi);
+
+ /* stderr_overlay_window is a child of screensaver_window, so we need
+ to destroy that as well (actually, we just need to invalidate and
+ drop our pointers to it, but this will destroy it, which is ok so
+ long as it happens before old_w itself is destroyed.) */
+ reset_stderr (ssi);
+
raise_window (si, True, True, False);
store_vroot_property (si->dpy,
ssi->screensaver_window, ssi->screensaver_window);
store_activate_time (si, True);
+
+
+ /* Transfer the grabs from the old window to the new.
+ Actually I think none of this is necessary, since we always
+ hold our grabs on the root window, but I wrote this before
+ re-discovering that...
+ */
+
+
+ /* If we're destroying the window that holds our mouse grab,
+ transfer the grab to the new window. (Grab the server while
+ so doing, to avoid a race condition.)
+ */
+ if (old_w == si->mouse_grab_window)
+ {
+ XGrabServer (si->dpy); /* ############ DANGER! */
+ ungrab_mouse (si);
+ grab_mouse (si, ssi->screensaver_window,
+ (si->demoing_p
+ ? 0
+ : ssi->cursor));
+ XUngrabServer (si->dpy);
+ XSync (si->dpy, False); /* ###### (danger over) */
+ }
+
+ /* If we're destroying the window that holds our keyboard grab,
+ transfer the grab to the new window. (Grab the server while
+ so doing, to avoid a race condition.)
+ */
+ if (old_w == si->keyboard_grab_window)
+ {
+ XGrabServer (si->dpy); /* ############ DANGER! */
+ ungrab_kbd(si);
+ grab_kbd(si, ssi->screensaver_window);
+ XUngrabServer (si->dpy);
+ XSync (si->dpy, False); /* ###### (danger over) */
+ }
+
+ /* Now we can destroy this window without horking our grabs. */
+
XDestroyWindow (si->dpy, old_w);
+
+ if (p->verbose_p)
+ fprintf (stderr, "%s: destroyed old saver window 0x%lx.\n",
+ blurb(), (unsigned long) old_w);
+
if (old_c &&
old_c != DefaultColormapOfScreen (ssi->screen) &&
old_c != ssi->demo_cmap)