-/* xscreensaver, Copyright (c) 1992 Jamie Zawinski <jwz@mcom.com>
+/* xscreensaver, Copyright (c) 1992-2008 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
The idea being that, when writing a graphics hack, you can just link
with this .o to get all of the uninteresting junk out of the way.
- - create a procedure `screenhack(dpy, window)'
+ Create a few static global procedures and variables:
- - create a variable `char *progclass' which names this program's
- resource class.
+ static void *YOURNAME_init (Display *, Window);
- - create a variable `char defaults []' for the default resources.
+ Return an opaque structure representing your drawing state.
- - create a variable `XrmOptionDescRec options []' for the command-line,
- and `int options_size' which is `XtNumber (options)'.
+ static unsigned long YOURNAME_draw (Display *, Window, void *closure);
- And that's it...
+ Draw one frame.
+ The `closure' arg is your drawing state, that you created in `init'.
+ Return the number of microseconds to wait until the next frame.
+
+ This should return in some small fraction of a second.
+ Do not call `usleep' or loop excessively. For long loops, use a
+ finite state machine.
+
+ static void YOURNAME_reshape (Display *, Window, void *closure,
+ unsigned int width, unsigned int height);
+
+ Called when the size of the window changes with the new size.
+
+ static Bool YOURNAME_event (Display *, Window, void *closure,
+ XEvent *event);
+
+ Called when a keyboard or mouse event arrives.
+ Return True if you handle it in some way, False otherwise.
+
+ static void YOURNAME_event (Display *, Window, void *closure);
+
+ Called when you are done: free everything you've allocated,
+ including your private `state' structure.
+
+ static char YOURNAME_defaults [] = { "...", "...", ... , 0 };
+
+ This variable is an array of strings, your default resources.
+ Null-terminate the list.
+
+ static XrmOptionDescRec YOURNAME_options[] = { { ... }, ... { 0,0,0,0 } }
+
+ This variable describes your command-line options.
+ Null-terminate the list.
+
+ Finally , invoke the XSCREENSAVER_MODULE() macro to tie it all together.
+
+ Additional caveats:
+
+ - Make sure that all functions in your module are static (check this
+ by running "nm -g" on the .o file).
+
+ - Do not use global variables: all such info must be stored in the
+ private `state' structure.
+
+ - Do not static function-local variables, either. Put it in `state'.
+
+ Assume that there are N independent runs of this code going in the
+ same address space at the same time: they must not affect each other.
+
+ - Don't forget to write an XML file to describe the user interface
+ of your screen saver module. See .../hacks/config/README for details.
*/
-#include "version.h"
+#define DEBUG_TIMING
+#define DEBUG_PAIR
#include <stdio.h>
#include <X11/Intrinsic.h>
#include <X11/IntrinsicP.h>
#include <X11/CoreP.h>
-#ifndef VMS
-#include <X11/Xmu/Error.h>
+#include <X11/Shell.h>
+#include <X11/StringDefs.h>
+#include <X11/keysym.h>
+
+#ifdef __sgi
+# include <X11/SGIScheme.h> /* for SgiUseSchemes() */
+#endif /* __sgi */
+
+#ifdef HAVE_XMU
+# ifndef VMS
+# include <X11/Xmu/Error.h>
+# else /* VMS */
+# include <Xmu/Error.h>
+# endif
#else
-#include "sys$common:[decw$include.xmu]Error.h"
+# include "xmu.h"
#endif
-#include "screenhack.h"
+#include "screenhackI.h"
+#include "version.h"
+#include "vroot.h"
-char *progname;
-XrmDatabase db;
-Bool mono_p;
+#ifndef _XSCREENSAVER_VROOT_H_
+# error Error! You have an old version of vroot.h! Check -I args.
+#endif /* _XSCREENSAVER_VROOT_H_ */
-#if __STDC__
-# define P(x) x
-#else
-# define P(x)()
+#ifndef isupper
+# define isupper(c) ((c) >= 'A' && (c) <= 'Z')
+#endif
+#ifndef _tolower
+# define _tolower(c) ((c) - 'A' + 'a')
#endif
+/* This is defined by the SCREENHACK_MAIN() macro via screenhack.h.
+ */
+extern struct xscreensaver_function_table *xscreensaver_function_table;
+
+
+const char *progname; /* used by hacks in error messages */
+const char *progclass; /* used by ../utils/resources.c */
+Bool mono_p; /* used by hacks */
+
+
static XrmOptionDescRec default_options [] = {
{ "-root", ".root", XrmoptionNoArg, "True" },
{ "-window", ".root", XrmoptionNoArg, "False" },
{ "-mono", ".mono", XrmoptionNoArg, "True" },
- { "-install", ".installColormap", XrmoptionNoArg, "True" }
+ { "-install", ".installColormap", XrmoptionNoArg, "True" },
+ { "-noinstall",".installColormap", XrmoptionNoArg, "False" },
+ { "-visual", ".visualID", XrmoptionSepArg, 0 },
+ { "-window-id", ".windowID", XrmoptionSepArg, 0 },
+
+# ifdef DEBUG_PAIR
+ { "-pair", ".pair", XrmoptionNoArg, "True" },
+# endif /* DEBUG_PAIR */
+ { 0, 0, 0, 0 }
};
static char *default_defaults[] = {
- "*root: false",
- "*geometry: 500x500",
+ ".root: false",
+ "*geometry: 600x480", /* this should be .geometry, but nooooo... */
"*mono: false",
"*installColormap: false",
+ "*visualID: default",
+ "*windowID: ",
+ "*desktopGrabber: xscreensaver-getimage %s",
0
};
static char **merged_defaults;
static void
-merge_options P((void))
+merge_options (void)
{
- int options_sizeof = options_size * sizeof (options[0]);
- int defaults_size;
- merged_options_size = XtNumber (default_options) + options_size;
+ struct xscreensaver_function_table *ft = xscreensaver_function_table;
+
+ const XrmOptionDescRec *options = ft->options;
+ const char * const *defaults = ft->defaults;
+ const char *progclass = ft->progclass;
+
+ int def_opts_size, opts_size;
+ int def_defaults_size, defaults_size;
+
+ for (def_opts_size = 0; default_options[def_opts_size].option;
+ def_opts_size++)
+ ;
+ for (opts_size = 0; options[opts_size].option; opts_size++)
+ ;
+
+ merged_options_size = def_opts_size + opts_size;
merged_options = (XrmOptionDescRec *)
- malloc (sizeof (default_options) + options_sizeof);
- memcpy (merged_options, options, options_sizeof);
- memcpy (merged_options + options_size, default_options,
- sizeof (default_options));
+ malloc ((merged_options_size + 1) * sizeof(*default_options));
+ memcpy (merged_options, default_options,
+ (def_opts_size * sizeof(*default_options)));
+ memcpy (merged_options + def_opts_size, options,
+ ((opts_size + 1) * sizeof(*default_options)));
- for (defaults_size = 0; defaults [defaults_size]; defaults_size++);
+ for (def_defaults_size = 0; default_defaults[def_defaults_size];
+ def_defaults_size++)
+ ;
+ for (defaults_size = 0; defaults[defaults_size]; defaults_size++)
+ ;
merged_defaults = (char **)
- malloc (sizeof (default_defaults) + (defaults_size * sizeof (char *)));
- memcpy (merged_defaults, default_defaults, sizeof (default_defaults));
- memcpy ((merged_defaults - 1 +
- (sizeof (default_defaults) / sizeof (default_defaults[0]))),
- defaults, ((defaults_size + 1) * sizeof (defaults[0])));
+ malloc ((def_defaults_size + defaults_size + 1) * sizeof (*defaults));;
+ memcpy (merged_defaults, default_defaults,
+ def_defaults_size * sizeof(*defaults));
+ memcpy (merged_defaults + def_defaults_size, defaults,
+ (defaults_size + 1) * sizeof(*defaults));
+
+ /* This totally sucks. Xt should behave like this by default.
+ If the string in `defaults' looks like ".foo", change that
+ to "Progclass.foo".
+ */
+ {
+ char **s;
+ for (s = merged_defaults; *s; s++)
+ if (**s == '.')
+ {
+ const char *oldr = *s;
+ char *newr = (char *) malloc(strlen(oldr) + strlen(progclass) + 3);
+ strcpy (newr, progclass);
+ strcat (newr, oldr);
+ *s = newr;
+ }
+ }
}
\f
*/
static int
-screenhack_ehandler (dpy, error)
- Display *dpy;
- XErrorEvent *error;
+screenhack_ehandler (Display *dpy, XErrorEvent *error)
{
fprintf (stderr, "\nX error in %s:\n", progname);
if (XmuPrintDefaultErrorMessage (dpy, error, stderr))
}
static Bool
-MapNotify_event_p (dpy, event, window)
- Display *dpy;
- XEvent *event;
- XPointer window;
+MapNotify_event_p (Display *dpy, XEvent *event, XPointer window)
{
return (event->xany.type == MapNotify &&
event->xvisibility.window == (Window) window);
}
-#ifndef VMS
-void
-#else
-int
+static Atom XA_WM_PROTOCOLS, XA_WM_DELETE_WINDOW;
+
+/* Dead-trivial event handling: exits if "q" or "ESC" are typed.
+ Exit if the WM_PROTOCOLS WM_DELETE_WINDOW ClientMessage is received.
+ Returns False if the screen saver should now terminate.
+ */
+static Bool
+screenhack_handle_event_1 (Display *dpy, XEvent *event)
+{
+ switch (event->xany.type)
+ {
+ case KeyPress:
+ {
+ KeySym keysym;
+ char c = 0;
+ XLookupString (&event->xkey, &c, 1, &keysym, 0);
+ if (c == 'q' ||
+ c == 'Q' ||
+ c == 3 || /* ^C */
+ c == 27) /* ESC */
+ return False; /* exit */
+ else if (! (keysym >= XK_Shift_L && keysym <= XK_Hyper_R))
+ XBell (dpy, 0); /* beep for non-chord keys */
+ }
+ break;
+ case ButtonPress:
+ XBell (dpy, 0);
+ break;
+ case ClientMessage:
+ {
+ if (event->xclient.message_type != XA_WM_PROTOCOLS)
+ {
+ char *s = XGetAtomName(dpy, event->xclient.message_type);
+ if (!s) s = "(null)";
+ fprintf (stderr, "%s: unknown ClientMessage %s received!\n",
+ progname, s);
+ }
+ else if (event->xclient.data.l[0] != XA_WM_DELETE_WINDOW)
+ {
+ char *s1 = XGetAtomName(dpy, event->xclient.message_type);
+ char *s2 = XGetAtomName(dpy, event->xclient.data.l[0]);
+ if (!s1) s1 = "(null)";
+ if (!s2) s2 = "(null)";
+ fprintf (stderr, "%s: unknown ClientMessage %s[%s] received!\n",
+ progname, s1, s2);
+ }
+ else
+ {
+ return False; /* exit */
+ }
+ }
+ break;
+ }
+ return True;
+}
+
+
+static Visual *
+pick_visual (Screen *screen)
+{
+ struct xscreensaver_function_table *ft = xscreensaver_function_table;
+
+ if (ft->pick_visual_hook)
+ {
+ Visual *v = ft->pick_visual_hook (screen);
+ if (v) return v;
+ }
+
+ return get_visual_resource (screen, "visualID", "VisualID", False);
+}
+
+
+/* Notice when the user has requested a different visual or colormap
+ on a pre-existing window (e.g., "-root -visual truecolor" or
+ "-window-id 0x2c00001 -install") and complain, since when drawing
+ on an existing window, we have no choice about these things.
+ */
+static void
+visual_warning (Screen *screen, Window window, Visual *visual, Colormap cmap,
+ Bool window_p)
+{
+ struct xscreensaver_function_table *ft = xscreensaver_function_table;
+
+ char *visual_string = get_string_resource (DisplayOfScreen (screen),
+ "visualID", "VisualID");
+ Visual *desired_visual = pick_visual (screen);
+ char win[100];
+ char why[100];
+
+ if (window == RootWindowOfScreen (screen))
+ strcpy (win, "root window");
+ else
+ sprintf (win, "window 0x%lx", (unsigned long) window);
+
+ if (window_p)
+ sprintf (why, "-window-id 0x%lx", (unsigned long) window);
+ else
+ strcpy (why, "-root");
+
+ if (visual_string && *visual_string)
+ {
+ char *s;
+ for (s = visual_string; *s; s++)
+ if (isupper (*s)) *s = _tolower (*s);
+
+ if (!strcmp (visual_string, "default") ||
+ !strcmp (visual_string, "default") ||
+ !strcmp (visual_string, "best"))
+ /* don't warn about these, just silently DWIM. */
+ ;
+ else if (visual != desired_visual)
+ {
+ fprintf (stderr, "%s: ignoring `-visual %s' because of `%s'.\n",
+ progname, visual_string, why);
+ fprintf (stderr, "%s: using %s's visual 0x%lx.\n",
+ progname, win, XVisualIDFromVisual (visual));
+ }
+ free (visual_string);
+ }
+
+ if (visual == DefaultVisualOfScreen (screen) &&
+ has_writable_cells (screen, visual) &&
+ get_boolean_resource (DisplayOfScreen (screen),
+ "installColormap", "InstallColormap"))
+ {
+ fprintf (stderr, "%s: ignoring `-install' because of `%s'.\n",
+ progname, why);
+ fprintf (stderr, "%s: using %s's colormap 0x%lx.\n",
+ progname, win, (unsigned long) cmap);
+ }
+
+ if (ft->validate_visual_hook)
+ {
+ if (! ft->validate_visual_hook (screen, win, visual))
+ exit (1);
+ }
+}
+
+
+static void
+fix_fds (void)
+{
+ /* Bad Things Happen if stdin, stdout, and stderr have been closed
+ (as by the `sh incantation "attraction >&- 2>&-"). When you do
+ that, the X connection gets allocated to one of these fds, and
+ then some random library writes to stderr, and random bits get
+ stuffed down the X pipe, causing "Xlib: sequence lost" errors.
+ So, we cause the first three file descriptors to be open to
+ /dev/null if they aren't open to something else already. This
+ must be done before any other files are opened (or the closing
+ of that other file will again free up one of the "magic" first
+ three FDs.)
+
+ We do this by opening /dev/null three times, and then closing
+ those fds, *unless* any of them got allocated as #0, #1, or #2,
+ in which case we leave them open. Gag.
+
+ Really, this crap is technically required of *every* X program,
+ if you want it to be robust in the face of "2>&-".
+ */
+ int fd0 = open ("/dev/null", O_RDWR);
+ int fd1 = open ("/dev/null", O_RDWR);
+ int fd2 = open ("/dev/null", O_RDWR);
+ if (fd0 > 2) close (fd0);
+ if (fd1 > 2) close (fd1);
+ if (fd2 > 2) close (fd2);
+}
+
+
+#ifdef DEBUG_TIMING
+
+static void
+check_timing (unsigned long delay)
+{
+ static unsigned long frame_count = 0;
+ static unsigned long delay_sum = 0;
+ static struct timeval prev1 = { 0, };
+ static struct timeval prev2 = { 0, };
+ struct timeval now;
+ double uprev1, uprev2, unow;
+
+# ifdef GETTIMEOFDAY_TWO_ARGS
+ gettimeofday (&now, 0);
+# else
+ gettimeofday (&now);
+# endif
+
+ if (prev1.tv_sec == 0)
+ prev1 = prev2 = now;
+
+ frame_count++;
+
+ uprev1 = prev1.tv_sec + ((double) prev1.tv_usec * 0.000001);
+ uprev2 = prev2.tv_sec + ((double) prev2.tv_usec * 0.000001);
+ unow = now.tv_sec + ((double) now.tv_usec * 0.000001);
+
+ if (unow >= uprev1 + 1.5)
+ fprintf (stderr,
+ "%s: warning: blocked event processing for %.1f secs!\n",
+ progname, unow - uprev1);
+ prev1 = now;
+
+ if (unow >= uprev2 + 10.0)
+ {
+ double fps = frame_count / (unow - uprev2);
+ double elapsed = unow - uprev2;
+ double slept = (delay_sum * 0.000001);
+ double sleep_ratio = slept / elapsed;
+
+ if (sleep_ratio < 0.10) {
+ fprintf (stderr,
+ "%s: warning: only %.0f%% idle over the"
+ " last %2.0f secs (at %.1f FPS)\n",
+ progname, 100 * sleep_ratio, elapsed, fps);
+ }
+
+ prev2 = now;
+ frame_count = 0;
+ delay_sum = 0;
+ }
+
+ delay_sum += delay;
+}
+
+#else /* !DEBUG_TIMING */
+# define check_timing(delay) /**/
+#endif /* !DEBUG_TIMING */
+
+static Boolean
+screenhack_table_handle_events (Display *dpy,
+ const struct xscreensaver_function_table *ft,
+ Window window, void *closure
+#ifdef DEBUG_PAIR
+ , Window window2, void *closure2
#endif
-main (argc, argv)
- int argc;
- char **argv;
+ )
{
- XtAppContext app;
+ XtAppContext app = XtDisplayToApplicationContext (dpy);
+
+ if (XtAppPending (app) & (XtIMTimer|XtIMAlternateInput))
+ XtAppProcessEvent (app, XtIMTimer|XtIMAlternateInput);
+
+ while (XPending (dpy))
+ {
+ XEvent event;
+ XNextEvent (dpy, &event);
+
+ if (event.xany.type == ConfigureNotify)
+ {
+ if (event.xany.window == window)
+ ft->reshape_cb (dpy, window, closure,
+ event.xconfigure.width, event.xconfigure.height);
+#ifdef DEBUG_PAIR
+ if (event.xany.window == window2)
+ ft->reshape_cb (dpy, window2, closure2,
+ event.xconfigure.width, event.xconfigure.height);
+#endif
+ }
+ else if (event.xany.type == ClientMessage ||
+ (! (event.xany.window == window
+ ? ft->event_cb (dpy, window, closure, &event)
+#ifdef DEBUG_PAIR
+ : event.xany.window == window2
+ ? ft->event_cb (dpy, window2, closure2, &event)
+#endif
+ : 0)))
+ if (! screenhack_handle_event_1 (dpy, &event))
+ return False;
+
+ if (XtAppPending (app) & (XtIMTimer|XtIMAlternateInput))
+ XtAppProcessEvent (app, XtIMTimer|XtIMAlternateInput);
+ }
+ return True;
+}
+
+
+static Boolean
+usleep_and_process_events (Display *dpy,
+ const struct xscreensaver_function_table *ft,
+ Window window, void *closure, unsigned long delay
+#ifdef DEBUG_PAIR
+ , Window window2, void *closure2, unsigned long delay2
+#endif
+ )
+{
+ do {
+ unsigned long quantum = 100000; /* 1/10th second */
+ if (quantum > delay)
+ quantum = delay;
+ delay -= quantum;
+
+ XSync (dpy, False);
+ if (quantum > 0)
+ usleep (quantum);
+
+ check_timing (quantum);
+
+ /* The above isn't quite right in pair-mode: we always run both windows
+ with the timing of window 2. But, it's just a debugging hack, so
+ that doesn't really matter that much... */
+
+ if (! screenhack_table_handle_events (dpy, ft, window, closure
+#ifdef DEBUG_PAIR
+ , window2, closure2
+#endif
+ ))
+ return False;
+ } while (delay > 0);
+
+ return True;
+}
+
+
+static void
+run_screenhack_table (Display *dpy,
+ Window window,
+# ifdef DEBUG_PAIR
+ Window window2,
+# endif
+ const struct xscreensaver_function_table *ft)
+{
+
+ /* Kludge: even though the init_cb functions are declared to take 2 args,
+ actually call them with 3, for the benefit of xlockmore_init() and
+ xlockmore_setup().
+ */
+ void *(*init_cb) (Display *, Window, void *) =
+ (void *(*) (Display *, Window, void *)) ft->init_cb;
+
+ void *closure = init_cb (dpy, window, ft->setup_arg);
+
+#ifdef DEBUG_PAIR
+ void *closure2 = 0;
+ if (window2) closure2 = init_cb (dpy, window2, ft->setup_arg);
+#endif
+
+ if (! closure) /* if it returns nothing, it can't possibly be re-entrant. */
+ abort();
+
+ while (1)
+ {
+ unsigned long delay = ft->draw_cb (dpy, window, closure);
+#ifdef DEBUG_PAIR
+ unsigned long delay2 = 0;
+ if (window2) delay2 = ft->draw_cb (dpy, window2, closure2);
+#endif
+
+ if (! usleep_and_process_events (dpy, ft,
+ window, closure, delay
+#ifdef DEBUG_PAIR
+ , window2, closure2, delay2
+#endif
+ ))
+ break;
+ }
+
+ ft->free_cb (dpy, window, closure);
+
+#ifdef DEBUG_PAIR
+ if (window2)
+ ft->free_cb (dpy, window2, closure2);
+#endif
+}
+
+
+static Widget
+make_shell (Screen *screen, Widget toplevel, int width, int height)
+{
+ Display *dpy = DisplayOfScreen (screen);
+ Visual *visual = pick_visual (screen);
+ Boolean def_visual_p = (toplevel &&
+ visual == DefaultVisualOfScreen (screen));
+
+ if (width <= 0) width = 600;
+ if (height <= 0) height = 480;
+
+# ifdef USE_GL
+ if (!validate_gl_visual (stderr, screen, "window", visual))
+ exit (1);
+# endif /* USE_GL */
+
+ if (def_visual_p)
+ {
+ Window window;
+ XtVaSetValues (toplevel,
+ XtNmappedWhenManaged, False,
+ XtNwidth, width,
+ XtNheight, height,
+ XtNinput, True, /* for WM_HINTS */
+ NULL);
+ XtRealizeWidget (toplevel);
+ window = XtWindow (toplevel);
+
+ if (get_boolean_resource (dpy, "installColormap", "InstallColormap"))
+ {
+ Colormap cmap =
+ XCreateColormap (dpy, window, DefaultVisualOfScreen (screen),
+ AllocNone);
+ XSetWindowColormap (dpy, window, cmap);
+ }
+ }
+ else
+ {
+ unsigned int bg, bd;
+ Widget new;
+ Colormap cmap = XCreateColormap (dpy, VirtualRootWindowOfScreen(screen),
+ visual, AllocNone);
+ bg = get_pixel_resource (dpy, cmap, "background", "Background");
+ bd = get_pixel_resource (dpy, cmap, "borderColor", "Foreground");
+
+ new = XtVaAppCreateShell (progname, progclass,
+ topLevelShellWidgetClass, dpy,
+ XtNmappedWhenManaged, False,
+ XtNvisual, visual,
+ XtNdepth, visual_depth (screen, visual),
+ XtNwidth, width,
+ XtNheight, height,
+ XtNcolormap, cmap,
+ XtNbackground, (Pixel) bg,
+ XtNborderColor, (Pixel) bd,
+ XtNinput, True, /* for WM_HINTS */
+ NULL);
+
+ if (!toplevel) /* kludge for the second window in -pair mode... */
+ XtVaSetValues (new, XtNx, 0, XtNy, 550, NULL);
+
+ XtRealizeWidget (new);
+ toplevel = new;
+ }
+
+ return toplevel;
+}
+
+static void
+init_window (Display *dpy, Widget toplevel, const char *title)
+{
+ Window window;
+ XWindowAttributes xgwa;
+ XtPopup (toplevel, XtGrabNone);
+ XtVaSetValues (toplevel, XtNtitle, title, NULL);
+
+ /* Select KeyPress, and announce that we accept WM_DELETE_WINDOW.
+ */
+ window = XtWindow (toplevel);
+ XGetWindowAttributes (dpy, window, &xgwa);
+ XSelectInput (dpy, window,
+ (xgwa.your_event_mask | KeyPressMask | KeyReleaseMask |
+ ButtonPressMask | ButtonReleaseMask));
+ XChangeProperty (dpy, window, XA_WM_PROTOCOLS, XA_ATOM, 32,
+ PropModeReplace,
+ (unsigned char *) &XA_WM_DELETE_WINDOW, 1);
+}
+
+
+int
+main (int argc, char **argv)
+{
+ struct xscreensaver_function_table *ft = xscreensaver_function_table;
+
+ XWindowAttributes xgwa;
Widget toplevel;
Display *dpy;
Window window;
- Colormap cmap;
+# ifdef DEBUG_PAIR
+ Window window2 = 0;
+ Widget toplevel2 = 0;
+# endif
+ XtAppContext app;
Bool root_p;
+ Window on_window = 0;
XEvent event;
+ Boolean dont_clear;
+ char version[255];
+
+ fix_fds();
+
+ progname = argv[0]; /* reset later */
+ progclass = ft->progclass;
+
+ if (ft->setup_cb)
+ ft->setup_cb (ft, ft->setup_arg);
merge_options ();
+
+#ifdef __sgi
+ /* We have to do this on SGI to prevent the background color from being
+ overridden by the current desktop color scheme (we'd like our backgrounds
+ to be black, thanks.) This should be the same as setting the
+ "*useSchemes: none" resource, but it's not -- if that resource is
+ present in the `default_defaults' above, it doesn't work, though it
+ does work when passed as an -xrm arg on the command line. So screw it,
+ turn them off from C instead.
+ */
+ SgiUseSchemes ("none");
+#endif /* __sgi */
+
toplevel = XtAppInitialize (&app, progclass, merged_options,
merged_options_size, &argc, argv,
merged_defaults, 0, 0);
+
dpy = XtDisplay (toplevel);
- db = XtDatabase (dpy);
- XtGetApplicationNameAndClass (dpy, &progname, &progclass);
+
+ XtGetApplicationNameAndClass (dpy,
+ (char **) &progname,
+ (char **) &progclass);
+
+ /* half-assed way of avoiding buffer-overrun attacks. */
+ if (strlen (progname) >= 100) ((char *) progname)[100] = 0;
+
XSetErrorHandler (screenhack_ehandler);
+
+ XA_WM_PROTOCOLS = XInternAtom (dpy, "WM_PROTOCOLS", False);
+ XA_WM_DELETE_WINDOW = XInternAtom (dpy, "WM_DELETE_WINDOW", False);
+
+ {
+ char *v = (char *) strdup(strchr(screensaver_id, ' '));
+ char *s1, *s2, *s3, *s4;
+ s1 = (char *) strchr(v, ' '); s1++;
+ s2 = (char *) strchr(s1, ' ');
+ s3 = (char *) strchr(v, '('); s3++;
+ s4 = (char *) strchr(s3, ')');
+ *s2 = 0;
+ *s4 = 0;
+ sprintf (version, "%s: from the XScreenSaver %s distribution (%s.)",
+ progclass, s1, s3);
+ free(v);
+ }
+
if (argc > 1)
{
+ const char *s;
int i;
int x = 18;
int end = 78;
- fprintf (stderr, "%s: unrecognised option \"%s\"\n", progname, argv[1]);
+ Bool help_p = (!strcmp(argv[1], "-help") ||
+ !strcmp(argv[1], "--help"));
+ fprintf (stderr, "%s\n", version);
+ for (s = progclass; *s; s++) fprintf(stderr, " ");
+ fprintf (stderr, " http://www.jwz.org/xscreensaver/\n\n");
+
+ if (!help_p)
+ fprintf(stderr, "Unrecognised option: %s\n", argv[1]);
fprintf (stderr, "Options include: ");
for (i = 0; i < merged_options_size; i++)
{
if (argp) fprintf (stderr, " <arg>");
if (i != merged_options_size - 1) fprintf (stderr, ", ");
}
+
fprintf (stderr, ".\n");
- exit (1);
+
+#if 0
+ if (help_p)
+ {
+ fprintf (stderr, "\nResources:\n\n");
+ for (i = 0; i < merged_options_size; i++)
+ {
+ const char *opt = merged_options [i].option;
+ const char *res = merged_options [i].specifier + 1;
+ const char *val = merged_options [i].value;
+ char *s = get_string_resource (dpy, (char *) res, (char *) res);
+
+ if (s)
+ {
+ int L = strlen(s);
+ while (L > 0 && (s[L-1] == ' ' || s[L-1] == '\t'))
+ s[--L] = 0;
+ }
+
+ fprintf (stderr, " %-16s %-18s ", opt, res);
+ if (merged_options [i].argKind == XrmoptionSepArg)
+ {
+ fprintf (stderr, "[%s]", (s ? s : "?"));
+ }
+ else
+ {
+ fprintf (stderr, "%s", (val ? val : "(null)"));
+ if (val && s && !strcasecmp (val, s))
+ fprintf (stderr, " [default]");
+ }
+ fprintf (stderr, "\n");
+ }
+ fprintf (stderr, "\n");
+ }
+#endif
+
+ exit (help_p ? 0 : 1);
}
- mono_p = get_boolean_resource ("mono", "Boolean");
+ free (merged_options);
+ free (merged_defaults);
+ merged_options = 0;
+ merged_defaults = 0;
+
+ dont_clear = get_boolean_resource (dpy, "dontClearRoot", "Boolean");
+ mono_p = get_boolean_resource (dpy, "mono", "Boolean");
if (CellsOfScreen (DefaultScreenOfDisplay (dpy)) <= 2)
mono_p = True;
- root_p = get_boolean_resource ("root", "Boolean");
- if (root_p)
+ root_p = get_boolean_resource (dpy, "root", "Boolean");
+
+ {
+ char *s = get_string_resource (dpy, "windowID", "WindowID");
+ if (s && *s)
+ on_window = get_integer_resource (dpy, "windowID", "WindowID");
+ if (s) free (s);
+ }
+
+ if (on_window)
+ {
+ window = (Window) on_window;
+ XtDestroyWidget (toplevel);
+ XGetWindowAttributes (dpy, window, &xgwa);
+ visual_warning (xgwa.screen, window, xgwa.visual, xgwa.colormap, True);
+
+ /* Select KeyPress and resize events on the external window.
+ */
+ xgwa.your_event_mask |= KeyPressMask | StructureNotifyMask;
+ XSelectInput (dpy, window, xgwa.your_event_mask);
+
+ /* Select ButtonPress and ButtonRelease events on the external window,
+ if no other app has already selected them (only one app can select
+ ButtonPress at a time: BadAccess results.)
+ */
+ if (! (xgwa.all_event_masks & (ButtonPressMask | ButtonReleaseMask)))
+ XSelectInput (dpy, window,
+ (xgwa.your_event_mask |
+ ButtonPressMask | ButtonReleaseMask));
+ }
+ else if (root_p)
{
- XWindowAttributes xgwa;
- window = RootWindowOfScreen (XtScreen (toplevel));
+ window = VirtualRootWindowOfScreen (XtScreen (toplevel));
XtDestroyWidget (toplevel);
XGetWindowAttributes (dpy, window, &xgwa);
- cmap = xgwa.colormap;
+ visual_warning (xgwa.screen, window, xgwa.visual, xgwa.colormap, False);
}
else
{
- XtRealizeWidget (toplevel);
+ Widget new = make_shell (XtScreen (toplevel), toplevel,
+ toplevel->core.width,
+ toplevel->core.height);
+ if (new != toplevel)
+ {
+ XtDestroyWidget (toplevel);
+ toplevel = new;
+ }
+
+ init_window (dpy, toplevel, version);
window = XtWindow (toplevel);
- if (get_boolean_resource ("installColormap", "InstallColormap"))
- {
- cmap = XCreateColormap (dpy, window,
- DefaultVisualOfScreen (XtScreen (toplevel)),
- AllocNone);
- XSetWindowColormap (dpy, window, cmap);
- }
- else
- cmap = DefaultColormap (dpy, DefaultScreen (dpy));
+ XGetWindowAttributes (dpy, window, &xgwa);
+
+# ifdef DEBUG_PAIR
+ if (get_boolean_resource (dpy, "pair", "Boolean"))
+ {
+ toplevel2 = make_shell (xgwa.screen, 0,
+ toplevel->core.width,
+ toplevel->core.height);
+ init_window (dpy, toplevel2, version);
+ window2 = XtWindow (toplevel2);
+ }
+# endif /* DEBUG_PAIR */
}
- if (!get_boolean_resource ("dontClearWindow", "Boolean")) /* kludge-o-rama */
+
+ if (!dont_clear)
{
- XSetWindowBackground (dpy, window,
- get_pixel_resource ("background", "Background",
- dpy, cmap));
+ unsigned int bg = get_pixel_resource (dpy, xgwa.colormap,
+ "background", "Background");
+ XSetWindowBackground (dpy, window, bg);
XClearWindow (dpy, window);
+# ifdef DEBUG_PAIR
+ if (window2)
+ {
+ XSetWindowBackground (dpy, window2, bg);
+ XClearWindow (dpy, window2);
+ }
+# endif
}
- if (!root_p && toplevel->core.mapped_when_managed)
+ if (!root_p && !on_window)
/* wait for it to be mapped */
XIfEvent (dpy, &event, MapNotify_event_p, (XPointer) window);
XSync (dpy, False);
- srandom ((int) time ((time_t *) 0));
- screenhack (dpy, window);
+
+ /* This is the one and only place that the random-number generator is
+ seeded in any screenhack. You do not need to seed the RNG again,
+ it is done for you before your code is invoked. */
+# undef ya_rand_init
+ ya_rand_init (0);
+
+ run_screenhack_table (dpy, window,
+# ifdef DEBUG_PAIR
+ window2,
+# endif
+ ft);
+
+ XtDestroyWidget (toplevel);
+ XtDestroyApplicationContext (app);
+
+ return 0;
}
projects / xscreensaver / blobdiff