--- /dev/null
+/* fps, Copyright (c) 2001-2008 Jamie Zawinski <jwz@jwz.org>
+ * Draw a frames-per-second display (Xlib and OpenGL).
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include "screenhackI.h"
+#include "fpsI.h"
+
+fps_state *
+fps_init (Display *dpy, Window window)
+{
+ fps_state *st;
+ const char *font;
+ XFontStruct *f;
+ int first, last;
+
+ if (! get_boolean_resource (dpy, "doFPS", "DoFPS"))
+ return 0;
+
+ st = (fps_state *) calloc (1, sizeof(*st));
+
+ st->dpy = dpy;
+ st->window = window;
+ st->clear_p = get_boolean_resource (dpy, "fpsSolid", "FPSSolid");
+
+ font = get_string_resource (dpy, "fpsFont", "Font");
+
+ if (!font) font = "-*-courier-bold-r-normal-*-180-*";
+ f = XLoadQueryFont (dpy, font);
+ if (!f) f = XLoadQueryFont (dpy, "fixed");
+
+ first = f->min_char_or_byte2;
+ last = f->max_char_or_byte2;
+
+ {
+ XWindowAttributes xgwa;
+ XGCValues gcv;
+ XGetWindowAttributes (dpy, window, &xgwa);
+ gcv.font = f->fid;
+ gcv.foreground =
+ get_pixel_resource (st->dpy, xgwa.colormap, "foreground", "Foreground");
+ st->draw_gc = XCreateGC (dpy, window, GCFont|GCForeground, &gcv);
+ gcv.foreground =
+ get_pixel_resource (st->dpy, xgwa.colormap, "background", "Background");
+ st->erase_gc = XCreateGC (dpy, window, GCFont|GCForeground, &gcv);
+ }
+
+ st->font = f;
+ st->x = 10;
+ st->y = 10;
+ if (get_boolean_resource (dpy, "fpsTop", "FPSTop"))
+ st->y = - (st->font->ascent + st->font->descent + 10);
+
+ strcpy (st->string, "FPS: ... ");
+
+ return st;
+}
+
+void
+fps_free (fps_state *st)
+{
+ if (st->draw_gc) XFreeGC (st->dpy, st->draw_gc);
+ if (st->erase_gc) XFreeGC (st->dpy, st->erase_gc);
+ if (st->font) XFreeFont (st->dpy, st->font);
+ free (st);
+}
+
+
+void
+fps_slept (fps_state *st, unsigned long usecs)
+{
+ st->slept += usecs;
+}
+
+
+double
+fps_compute (fps_state *st, unsigned long polys)
+{
+ if (! st) return 0; /* too early? */
+
+ /* Every N frames (where N is approximately one second's worth of frames)
+ check the wall clock. We do this because checking the wall clock is
+ a slow operation.
+ */
+ if (st->frame_count++ >= st->last_ifps)
+ {
+# ifdef GETTIMEOFDAY_TWO_ARGS
+ struct timezone tzp;
+ gettimeofday(&st->this_frame_end, &tzp);
+# else
+ gettimeofday(&st->this_frame_end);
+# endif
+
+ if (st->prev_frame_end.tv_sec == 0)
+ st->prev_frame_end = st->this_frame_end;
+ }
+
+ /* If we've probed the wall-clock time, regenerate the string.
+ */
+ if (st->this_frame_end.tv_sec != st->prev_frame_end.tv_sec)
+ {
+ double uprev_frame_end = (st->prev_frame_end.tv_sec +
+ ((double) st->prev_frame_end.tv_usec
+ * 0.000001));
+ double uthis_frame_end = (st->this_frame_end.tv_sec +
+ ((double) st->this_frame_end.tv_usec
+ * 0.000001));
+ double fps = st->frame_count / (uthis_frame_end - uprev_frame_end);
+ double idle = (((double) st->slept * 0.000001) /
+ (uthis_frame_end - uprev_frame_end));
+ double load = 100 * (1 - idle);
+
+ if (load < 0) load = 0; /* well that's obviously nonsense... */
+
+ st->prev_frame_end = st->this_frame_end;
+ st->frame_count = 0;
+ st->slept = 0;
+ st->last_ifps = fps;
+ st->last_fps = fps;
+
+ sprintf (st->string, (polys
+ ? "FPS: %.1f \nLoad: %.1f%% "
+ : "FPS: %.1f \nLoad: %.1f%% "),
+ fps, load);
+
+ if (polys > 0)
+ {
+ const char *s = "";
+# if 0
+ if (polys >= (1024 * 1024)) polys >>= 20, s = "M";
+ else if (polys >= 2048) polys >>= 10, s = "K";
+# endif
+
+ strcat (st->string, "\nPolys: ");
+ if (polys >= 1000000)
+ sprintf (st->string + strlen(st->string), "%lu,%03lu,%03lu%s ",
+ (polys / 1000000), ((polys / 1000) % 1000),
+ (polys % 1000), s);
+ else if (polys >= 1000)
+ sprintf (st->string + strlen(st->string), "%lu,%03lu%s ",
+ (polys / 1000), (polys % 1000), s);
+ else
+ sprintf (st->string + strlen(st->string), "%lu%s ", polys, s);
+ }
+ }
+
+ return st->last_fps;
+}
+
+
+
+/* Width (and optionally height) of the string in pixels.
+ */
+static int
+string_width (XFontStruct *f, const char *c, int *height_ret)
+{
+ int x = 0;
+ int max_w = 0;
+ int h = f->ascent + f->descent;
+ while (*c)
+ {
+ int cc = *((unsigned char *) c);
+ if (*c == '\n')
+ {
+ if (x > max_w) max_w = x;
+ x = 0;
+ h += f->ascent + f->descent;
+ }
+ else
+ x += (f->per_char
+ ? f->per_char[cc-f->min_char_or_byte2].width
+ : f->min_bounds.rbearing);
+ c++;
+ }
+ if (x > max_w) max_w = x;
+ if (height_ret) *height_ret = h;
+
+ return max_w;
+}
+
+
+/* This function is used only in Xlib mode. For GL mode, see glx/fps-glx.c.
+ */
+void
+fps_draw (fps_state *st)
+{
+ XWindowAttributes xgwa;
+ const char *string = st->string;
+ const char *s;
+ int x = st->x;
+ int y = st->y;
+ int lines = 1;
+ int lh = st->font->ascent + st->font->descent;
+
+ XGetWindowAttributes (st->dpy, st->window, &xgwa);
+
+ for (s = string; *s; s++)
+ if (*s == '\n') lines++;
+
+ if (y < 0)
+ y = -y + (lines-1) * lh;
+ else
+ y = xgwa.height - y;
+
+ y -= lh * (lines-1) + st->font->descent;
+
+ /* clear the background */
+ if (st->clear_p)
+ {
+ int w, h;
+ w = string_width (st->font, string, &h);
+ XFillRectangle (st->dpy, st->window, st->erase_gc,
+ x - st->font->descent,
+ y - lh,
+ w + 2*st->font->descent,
+ h + 2*st->font->descent);
+ }
+
+ /* draw the text */
+ while (lines)
+ {
+ s = strchr (string, '\n');
+ if (! s) s = string + strlen(string);
+ XDrawString (st->dpy, st->window, st->draw_gc,
+ x, y, string, s - string);
+ string = s;
+ string++;
+ lines--;
+ y += lh;
+ }
+}
--- /dev/null
+/* fps, Copyright (c) 2001-2008 Jamie Zawinski <jwz@jwz.org>
+ * Draw a frames-per-second display (Xlib and OpenGL).
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#ifndef __XSCREENSAVER_FPS_H__
+# define __XSCREENSAVER_FPS_H__
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+typedef struct fps_state fps_state;
+
+extern fps_state *fps_init (Display *, Window);
+extern void fps_free (fps_state *);
+extern void fps_slept (fps_state *, unsigned long usecs);
+extern double fps_compute (fps_state *, unsigned long polys);
+extern void fps_draw (fps_state *);
+
+#endif /* __XSCREENSAVER_FPS_H__ */
--- /dev/null
+/* fps, Copyright (c) 2001-2008 Jamie Zawinski <jwz@jwz.org>
+ * Draw a frames-per-second display (Xlib and OpenGL).
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#ifndef __XSCREENSAVER_FPSI_H__
+# define __XSCREENSAVER_FPSI_H__
+
+#include "fps.h"
+
+struct fps_state {
+ Display *dpy;
+ Window window;
+ int x, y;
+ XFontStruct *font;
+ unsigned long font_dlist; /* for glx/fps-gl.c */
+ Bool clear_p;
+ char string[1024];
+
+ GC draw_gc, erase_gc;
+
+ int last_ifps;
+ double last_fps;
+ int frame_count;
+ unsigned long slept;
+ struct timeval prev_frame_end, this_frame_end;
+};
+
+#endif /* __XSCREENSAVER_FPSI_H__ */
--- /dev/null
+/* 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 above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * And remember: X Windows is to graphics hacking as roman numerals are to
+ * the square root of pi.
+ */
+
+/* This file contains simple code to open a window or draw on the root.
+ 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 few static global procedures and variables:
+
+ static void *YOURNAME_init (Display *, Window);
+
+ Return an opaque structure representing your drawing state.
+
+ static unsigned long YOURNAME_draw (Display *, Window, void *closure);
+
+ 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_free (Display *, Window, void *closure);
+
+ Called when you are done: free everything you've allocated,
+ including your private `state' structure.
+
+ NOTE: this is called in windowed-mode when the user typed
+ 'q' or clicks on the window's close box; but when
+ xscreensaver terminates this screenhack, it does so by
+ killing the process with SIGSTOP. So this callback is
+ mostly useless.
+
+ 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 use 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.
+ */
+
+#define DEBUG_PAIR
+
+#include <stdio.h>
+#include <X11/Intrinsic.h>
+#include <X11/IntrinsicP.h>
+#include <X11/CoreP.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 "xmu.h"
+#endif
+
+#include "screenhackI.h"
+#include "version.h"
+#include "vroot.h"
+#include "fps.h"
+
+#ifndef _XSCREENSAVER_VROOT_H_
+# error Error! You have an old version of vroot.h! Check -I args.
+#endif /* _XSCREENSAVER_VROOT_H_ */
+
+#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" },
+ { "-noinstall",".installColormap", XrmoptionNoArg, "False" },
+ { "-visual", ".visualID", XrmoptionSepArg, 0 },
+ { "-window-id", ".windowID", XrmoptionSepArg, 0 },
+ { "-fps", ".doFPS", XrmoptionNoArg, "True" },
+ { "-no-fps", ".doFPS", XrmoptionNoArg, "False" },
+
+# ifdef DEBUG_PAIR
+ { "-pair", ".pair", XrmoptionNoArg, "True" },
+# endif /* DEBUG_PAIR */
+ { 0, 0, 0, 0 }
+};
+
+static char *default_defaults[] = {
+ ".root: false",
+ "*geometry: 600x480", /* this should be .geometry, but nooooo... */
+ "*mono: false",
+ "*installColormap: false",
+ "*doFPS: false",
+ "*visualID: default",
+ "*windowID: ",
+ "*desktopGrabber: xscreensaver-getimage %s",
+ 0
+};
+
+static XrmOptionDescRec *merged_options;
+static int merged_options_size;
+static char **merged_defaults;
+
+
+static void
+merge_options (void)
+{
+ 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 ((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 (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 ((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
+/* Make the X errors print out the name of this program, so we have some
+ clue which one has a bug when they die under the screensaver.
+ */
+
+static int
+screenhack_ehandler (Display *dpy, XErrorEvent *error)
+{
+ fprintf (stderr, "\nX error in %s:\n", progname);
+ if (XmuPrintDefaultErrorMessage (dpy, error, stderr))
+ exit (-1);
+ else
+ fprintf (stderr, " (nonfatal.)\n");
+ return 0;
+}
+
+static Bool
+MapNotify_event_p (Display *dpy, XEvent *event, XPointer window)
+{
+ return (event->xany.type == MapNotify &&
+ event->xvisibility.window == (Window) window);
+}
+
+
+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);
+}
+
+
+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
+ )
+{
+ 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, fps_state *fpst, void *closure,
+ unsigned long delay
+#ifdef DEBUG_PAIR
+ , Window window2, fps_state *fpst2, 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);
+ if (fpst) fps_slept (fpst, quantum);
+#ifdef DEBUG_PAIR
+ if (fpst2) fps_slept (fpst2, quantum);
+#endif
+ }
+
+ if (! screenhack_table_handle_events (dpy, ft, window, closure
+#ifdef DEBUG_PAIR
+ , window2, closure2
+#endif
+ ))
+ return False;
+ } while (delay > 0);
+
+ return True;
+}
+
+
+static void
+screenhack_do_fps (Display *dpy, Window w, fps_state *fpst, void *closure)
+{
+ fps_compute (fpst, 0);
+ fps_draw (fpst);
+}
+
+
+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 (*fps_cb) (Display *, Window, fps_state *, void *) = ft->fps_cb;
+
+ void *closure = init_cb (dpy, window, ft->setup_arg);
+ fps_state *fpst = fps_init (dpy, window);
+
+#ifdef DEBUG_PAIR
+ void *closure2 = 0;
+ fps_state *fpst2 = 0;
+ if (window2) closure2 = init_cb (dpy, window2, ft->setup_arg);
+ if (window2) fpst2 = fps_init (dpy, window2);
+#endif
+
+ if (! closure) /* if it returns nothing, it can't possibly be re-entrant. */
+ abort();
+
+ if (! fps_cb) fps_cb = screenhack_do_fps;
+
+ 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 (fpst) fps_cb (dpy, window, fpst, closure);
+#ifdef DEBUG_PAIR
+ if (fpst2) fps_cb (dpy, window, fpst2, closure);
+#endif
+
+ if (! usleep_and_process_events (dpy, ft,
+ window, fpst, closure, delay
+#ifdef DEBUG_PAIR
+ , window2, fpst2, closure2, delay2
+#endif
+ ))
+ break;
+ }
+
+ ft->free_cb (dpy, window, closure);
+ if (fpst) fps_free (fpst);
+
+#ifdef DEBUG_PAIR
+ if (window2) ft->free_cb (dpy, window2, closure2);
+ if (window2) fps_free (fpst2);
+#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;
+
+ 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;
+# 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);
+
+ 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;
+ 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++)
+ {
+ char *sw = merged_options [i].option;
+ Bool argp = (merged_options [i].argKind == XrmoptionSepArg);
+ int size = strlen (sw) + (argp ? 6 : 0) + 2;
+ if (x + size >= end)
+ {
+ fprintf (stderr, "\n\t\t ");
+ x = 18;
+ }
+ x += size;
+ fprintf (stderr, "%s", sw);
+ if (argp) fprintf (stderr, " <arg>");
+ if (i != merged_options_size - 1) fprintf (stderr, ", ");
+ }
+
+ fprintf (stderr, ".\n");
+
+#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);
+ }
+
+ 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 (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)
+ {
+ window = VirtualRootWindowOfScreen (XtScreen (toplevel));
+ XtDestroyWidget (toplevel);
+ XGetWindowAttributes (dpy, window, &xgwa);
+ /* With RANDR, the root window can resize! */
+ XSelectInput (dpy, window, xgwa.your_event_mask | StructureNotifyMask);
+ visual_warning (xgwa.screen, window, xgwa.visual, xgwa.colormap, False);
+ }
+ else
+ {
+ 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);
+ 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 (!dont_clear)
+ {
+ 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 && !on_window)
+ /* wait for it to be mapped */
+ XIfEvent (dpy, &event, MapNotify_event_p, (XPointer) window);
+
+ XSync (dpy, False);
+
+ /* 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;
+}
--- /dev/null
+/* 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 above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#ifndef __SCREENHACK_H__
+#define __SCREENHACK_H__
+
+#include "screenhackI.h"
+
+/* In an Xlib world, we define two global symbols here:
+ a struct in `MODULENAME_xscreensaver_function_table',
+ and a pointer to that in `xscreensaver_function_table'.
+
+ In a Cocoa world, we only define the prefixed symbol;
+ the un-prefixed symbol does not exist.
+ */
+#ifdef HAVE_COCOA
+# define XSCREENSAVER_LINK(NAME)
+#else
+# define XSCREENSAVER_LINK(NAME) \
+ struct xscreensaver_function_table *xscreensaver_function_table = &NAME;
+#endif
+
+
+#if defined(HAVE_COCOA) && !defined(__XLOCKMORE_INTERNAL_H__)
+ /* this is one enormous kludge... */
+# undef ya_rand_init
+ static void
+ xscreensaver_common_setup(struct xscreensaver_function_table *xsft, void *a)
+ { ya_rand_init(0); }
+#else
+# define xscreensaver_common_setup 0
+#endif
+
+
+#define XSCREENSAVER_MODULE_2(CLASS,NAME,PREFIX) \
+ struct xscreensaver_function_table \
+ NAME ## _xscreensaver_function_table = { \
+ CLASS, \
+ PREFIX ## _defaults, \
+ PREFIX ## _options, \
+ xscreensaver_common_setup, 0, \
+ PREFIX ## _init, \
+ PREFIX ## _draw, \
+ PREFIX ## _reshape, \
+ PREFIX ## _event, \
+ PREFIX ## _free, \
+ 0, 0, 0 }; \
+ XSCREENSAVER_LINK (NAME ## _xscreensaver_function_table)
+
+#define XSCREENSAVER_MODULE(CLASS,PREFIX) \
+ XSCREENSAVER_MODULE_2(CLASS,PREFIX,PREFIX)
+
+#endif /* __SCREENHACK_H__ */
--- /dev/null
+/* 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 above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+/* Found in Don Hopkins' .plan file:
+ *
+ * The color situation is a total flying circus. The X approach to
+ * device independence is to treat everything like a MicroVax framebuffer
+ * on acid. A truely portable X application is required to act like the
+ * persistent customer in the Monty Python ``Cheese Shop'' sketch. Even
+ * the simplest applications must answer many difficult questions, like:
+ *
+ * WHAT IS YOUR DISPLAY?
+ * display = XOpenDisplay("unix:0");
+ * WHAT IS YOUR ROOT?
+ * root = RootWindow(display, DefaultScreen(display));
+ * AND WHAT IS YOUR WINDOW?
+ * win = XCreateSimpleWindow(display, root, 0, 0, 256, 256, 1,
+ * BlackPixel(display, DefaultScreen(display)),
+ * WhitePixel(display, DefaultScreen(display)))
+ * OH ALL RIGHT, YOU CAN GO ON.
+ *
+ * WHAT IS YOUR DISPLAY?
+ * display = XOpenDisplay("unix:0");
+ * WHAT IS YOUR COLORMAP?
+ * cmap = DefaultColormap(display, DefaultScreen(display));
+ * AND WHAT IS YOUR FAVORITE COLOR?
+ * favorite_color = 0; / * Black. * /
+ * / * Whoops! No, I mean: * /
+ * favorite_color = BlackPixel(display, DefaultScreen(display));
+ * / * AAAYYYYEEEEE!! (client dumps core & falls into the chasm) * /
+ *
+ * WHAT IS YOUR DISPLAY?
+ * display = XOpenDisplay("unix:0");
+ * WHAT IS YOUR VISUAL?
+ * struct XVisualInfo vinfo;
+ * if (XMatchVisualInfo(display, DefaultScreen(display),
+ * 8, PseudoColor, &vinfo) != 0)
+ * visual = vinfo.visual;
+ * AND WHAT IS THE NET SPEED VELOCITY OF AN XConfigureWindow REQUEST?
+ * / * Is that a SubStructureRedirectMask or a ResizeRedirectMask? * /
+ * WHAT?! HOW AM I SUPPOSED TO KNOW THAT?
+ * AAAAUUUGGGHHH!!!! (server dumps core & falls into the chasm)
+ */
+
+#ifndef __SCREENHACK_I_H__
+#define __SCREENHACK_I_H__
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+#ifdef __hpux
+ /* Which of the ten billion standards does values.h belong to?
+ What systems always have it? */
+# include <values.h>
+#endif
+
+#ifdef HAVE_COCOA
+# include "jwxyz.h"
+#else /* !HAVE_COCOA -- real X11 */
+# include <X11/Xlib.h>
+# include <X11/Xutil.h>
+# include <X11/Xresource.h>
+# include <X11/Xos.h>
+#endif /* !HAVE_COCOA */
+
+/* M_PI ought to have been defined in math.h, but... */
+#ifndef M_PI
+# define M_PI 3.1415926535
+#endif
+
+#ifndef M_PI_2
+# define M_PI_2 1.5707963267
+#endif
+
+#ifndef Button6
+# define Button6 6
+# define Button7 7
+#endif
+
+#include "yarandom.h"
+#include "usleep.h"
+#include "resources.h"
+#include "hsv.h"
+#include "colors.h"
+#include "grabscreen.h"
+#include "visual.h"
+#include "fps.h"
+
+/* Be Posixly correct */
+#undef bzero
+#define bzero __ERROR_use_memset_not_bzero_in_xscreensaver__
+#undef bcopy
+#define bcopy __ERROR_use_memcpy_not_bcopy_in_xscreensaver__
+#undef ftime
+#define ftime __ERROR_use_gettimeofday_not_ftime_in_xscreensaver__
+#undef sleep
+#define sleep __ERROR_do_not_sleep_in_xscreensaver__
+
+extern Bool mono_p;
+
+struct xscreensaver_function_table {
+
+ const char *progclass;
+ const char * const *defaults;
+ const XrmOptionDescRec *options;
+
+ void (*setup_cb) (struct xscreensaver_function_table *, void *);
+ void * setup_arg;
+
+ void * (*init_cb) (Display *, Window);
+ unsigned long (*draw_cb) (Display *, Window, void *);
+ void (*reshape_cb) (Display *, Window, void *,
+ unsigned int w, unsigned int h);
+ Bool (*event_cb) (Display *, Window, void *, XEvent *);
+ void (*free_cb) (Display *, Window, void *);
+ void (*fps_cb) (Display *, Window, fps_state *, void *);
+
+ Visual * (*pick_visual_hook) (Screen *);
+ Bool (*validate_visual_hook) (Screen *, const char *, Visual *);
+
+};
+
+extern const char *progname;
+
+#endif /* __SCREENHACK_I_H__ */
--- /dev/null
+/* xscreensaver, Copyright (c) 1992, 1997 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 above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#ifndef __COLORS_H__
+#define __COLORS_H__
+
+/* Like XFreeColors, but works on `XColor *' instead of `unsigned long *'
+ */
+extern void free_colors (Display *, Colormap, XColor *, int ncolors);
+
+
+/* Allocates writable, non-contiguous color cells. The number requested is
+ passed in *ncolorsP, and the number actually allocated is returned there.
+ (Unlike XAllocColorCells(), this will allocate as many as it can, instead
+ of failing if they can't all be allocated.)
+ */
+extern void allocate_writable_colors (Display *dpy, Colormap cmap,
+ unsigned long *pixels, int *ncolorsP);
+
+
+/* Generates a sequence of colors evenly spaced between the given pair
+ of HSV coordinates.
+
+ If closed_p is true, the colors will go from the first point to the
+ second then back to the first.
+
+ If allocate_p is true, the colors will be allocated from the map;
+ if enough colors can't be allocated, we will try for less, and the
+ result will be returned to ncolorsP.
+
+ If writable_p is true, writable color cells will be allocated;
+ otherwise, read-only cells will be allocated.
+ */
+extern void make_color_ramp (Display *dpy, Colormap cmap,
+ int h1, double s1, double v1,
+ int h2, double s2, double v2,
+ XColor *colors, int *ncolorsP,
+ Bool closed_p,
+ Bool allocate_p,
+ Bool writable_p);
+
+/* Generates a sequence of colors evenly spaced around the triangle
+ indicated by the thee HSV coordinates.
+
+ If allocate_p is true, the colors will be allocated from the map;
+ if enough colors can't be allocated, we will try for less, and the
+ result will be returned to ncolorsP.
+
+ If writable_p is true, writable color cells will be allocated;
+ otherwise, read-only cells will be allocated.
+ */
+extern void make_color_loop (Display *, Colormap,
+ int h1, double s1, double v1,
+ int h2, double s2, double v2,
+ int h3, double s3, double v3,
+ XColor *colors, int *ncolorsP,
+ Bool allocate_p,
+ Bool writable_p);
+
+
+/* Allocates a hopefully-interesting colormap, which will be a closed loop
+ without any sudden transitions.
+
+ If allocate_p is true, the colors will be allocated from the map;
+ if enough colors can't be allocated, we will try for less, and the
+ result will be returned to ncolorsP. An error message will be
+ printed on stderr (if verbose_p).
+
+ If *writable_pP is true, writable color cells will be allocated;
+ otherwise, read-only cells will be allocated. If no writable cells
+ cannot be allocated, we will try to allocate unwritable cells
+ instead, and print a message on stderr to that effect (if verbose_p).
+ */
+extern void make_smooth_colormap (Display *dpy, Visual *visual,
+ Colormap cmap,
+ XColor *colors, int *ncolorsP,
+ Bool allocate_p,
+ Bool *writable_pP,
+ Bool verbose_p);
+
+/* Allocates a uniform colormap which touches each hue of the spectrum,
+ evenly spaced. The saturation and intensity are chosen randomly, but
+ will be high enough to be visible.
+
+ If allocate_p is true, the colors will be allocated from the map;
+ if enough colors can't be allocated, we will try for less, and the
+ result will be returned to ncolorsP. An error message will be
+ printed on stderr (if verbose_p).
+
+ If *writable_pP is true, writable color cells will be allocated;
+ otherwise, read-only cells will be allocated. If no writable cells
+ cannot be allocated, we will try to allocate unwritable cells
+ instead, and print a message on stderr to that effect (if verbose_p).
+ */
+extern void make_uniform_colormap (Display *dpy, Visual *visual,
+ Colormap cmap,
+ XColor *colors, int *ncolorsP,
+ Bool allocate_p,
+ Bool *writable_pP,
+ Bool verbose_p);
+
+/* Allocates a random colormap (the colors are unrelated to one another.)
+ If `bright_p' is false, the colors will be completely random; if it is
+ true, all of the colors will be bright enough to see on a black background.
+
+ If allocate_p is true, the colors will be allocated from the map;
+ if enough colors can't be allocated, we will try for less, and the
+ result will be returned to ncolorsP. An error message will be
+ printed on stderr (if verbose_p).
+
+ If *writable_pP is true, writable color cells will be allocated;
+ otherwise, read-only cells will be allocated. If no writable cells
+ cannot be allocated, we will try to allocate unwritable cells
+ instead, and print a message on stderr to that effect (if verbose_p).
+ */
+extern void make_random_colormap (Display *dpy, Visual *visual,
+ Colormap cmap,
+ XColor *colors, int *ncolorsP,
+ Bool bright_p,
+ Bool allocate_p,
+ Bool *writable_pP,
+ Bool verbose_p);
+
+
+/* Assuming that the array of colors indicates the current state of a set
+ of writable color cells, this rotates the contents of the array by
+ `distance' steps, moving the colors of cell N to cell (N - distance).
+ */
+extern void rotate_colors (Display *, Colormap,
+ XColor *, int ncolors, int distance);
+
+#endif /* __COLORS_H__ */
--- /dev/null
+/* xscreensaver, Copyright (c) 1992-2006 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 above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#ifndef __GRABSCREEN_H__
+#define __GRABSCREEN_H__
+
+/* This will write an image onto the given Drawable.
+ The Drawable (arg 3) may be a Window or a Pixmap.
+
+ The Window must be the top-level window. The image *may or may not*
+ be written to the window, though it will definitely be written to
+ the drawable. It's fine for args 2 and 3 to be the same window, or
+ for arg 2 to be a Window, and arg 3 to be a Pixmap.
+
+ The loaded image might be from a file, or from a screen shot of the
+ desktop, or from the system's video input, depending on user
+ preferences.
+
+ When the callback is called, the image data will have been loaded
+ into the given drawable. Copy `name' if you want to keep it.
+
+ If it is from a file, then the `filename' argument will be the name
+ of the file. It may be NULL. If you want to keep this string, copy it.
+
+ The size and position of the image is in the `geometry' arg.
+ The image will generally have been scaled up to fit the window, but
+ if a loaded file had a different aspect ratio than the window, it
+ will have been centered, and the returned coords will describe that.
+
+ Many colors may be allocated from the window's colormap.
+ */
+extern void load_image_async (Screen *, Window, Drawable,
+ void (*callback) (Screen *, Window,
+ Drawable,
+ const char *name,
+ XRectangle *geometry,
+ void *closure),
+ void *closure);
+
+/* A utility wrapper around load_image_async() that is simpler if you
+ are only loading a single image at a time: just keep calling it
+ periodically until it returns NULL. When it does, the image has
+ been loaded.
+ */
+typedef struct async_load_state async_load_state;
+extern async_load_state *load_image_async_simple (async_load_state *,
+ Screen *,
+ Window top_level,
+ Drawable target,
+ char **filename_ret,
+ XRectangle *geometry_ret);
+
+
+/* Whether one should use GCSubwindowMode when drawing on this window
+ (assuming a screen image has been grabbed onto it.) Yes, this is a
+ total kludge. */
+extern Bool use_subwindow_mode_p(Screen *screen, Window window);
+
+/* Whether the given window is:
+ - the real root window;
+ - the virtual root window;
+ - a direct child of the root window;
+ - a direct child of the window manager's decorations.
+ */
+extern Bool top_level_window_p(Screen *screen, Window window);
+
+
+/* Don't call this: this is for the "xscreensaver-getimage" program only. */
+extern void grab_screen_image_internal (Screen *, Window);
+
+/* Don't use these: this is how "xscreensaver-getimage" and "grabclient.c"
+ pass the file name around. */
+#define XA_XSCREENSAVER_IMAGE_FILENAME "_SCREENSAVER_IMAGE_FILENAME"
+#define XA_XSCREENSAVER_IMAGE_GEOMETRY "_SCREENSAVER_IMAGE_GEOMETRY"
+
+/* For debugging: turn on verbosity. */
+extern void grabscreen_verbose (void);
+
+#ifdef HAVE_COCOA
+/* Don't use these: internal interface of grabclient.c. */
+extern void osx_grab_desktop_image (Screen *, Window, Drawable);
+extern Bool osx_load_image_file (Screen *, Window, Drawable,
+ const char *filename, XRectangle *geom_ret);
+#endif /* HAVE_COCOA */
+
+#endif /* __GRABSCREEN_H__ */
--- /dev/null
+/* xscreensaver, Copyright (c) 1992, 1997 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 above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#ifndef __HSV_H__
+#define __HSV_H__
+
+/* Converts between RGB and HSV color spaces.
+ R, G, and B are in the range 0 - 65535;
+ H is in the range 0 - 360;
+ S and V are in the range 0.0 - 1.0.
+ */
+extern void hsv_to_rgb (int h, double s, double v,
+ unsigned short *r,
+ unsigned short *g,
+ unsigned short *b);
+extern void rgb_to_hsv (unsigned short r, unsigned short g, unsigned short b,
+ int *h, double *s, double *v);
+
+#endif /* __HSV_H__ */
--- /dev/null
+/* xscreensaver, Copyright (c) 1992, 1997, 1998, 2001, 2003, 2006
+ * 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 above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#include "utils.h"
+#include "resources.h"
+
+extern char *progname;
+
+
+#ifndef HAVE_COCOA
+
+#include <X11/Xresource.h>
+
+/* These are the Xlib/Xrm versions of these functions.
+ The Cocoa versions are on OSX/XScreenSaverView.m.
+ */
+
+extern char *progclass;
+extern XrmDatabase XtDatabase (Display *);
+
+static unsigned int get_time_resource (Display *dpy,
+ char *res_name, char *res_class,
+ Bool sec_p);
+
+#ifndef isupper
+# define isupper(c) ((c) >= 'A' && (c) <= 'Z')
+#endif
+#ifndef _tolower
+# define _tolower(c) ((c) - 'A' + 'a')
+#endif
+
+char *
+get_string_resource (Display *dpy, char *res_name, char *res_class)
+{
+ XrmValue value;
+ char *type;
+ char full_name [1024], full_class [1024];
+ strcpy (full_name, progname);
+ strcat (full_name, ".");
+ strcat (full_name, res_name);
+ strcpy (full_class, progclass);
+ strcat (full_class, ".");
+ strcat (full_class, res_class);
+ if (XrmGetResource (XtDatabase (dpy), full_name, full_class, &type, &value))
+ {
+ char *str = (char *) malloc (value.size + 1);
+ strncpy (str, (char *) value.addr, value.size);
+ str [value.size] = 0;
+ return str;
+ }
+ return 0;
+}
+
+Bool
+get_boolean_resource (Display *dpy, char *res_name, char *res_class)
+{
+ char *tmp, buf [100];
+ char *s = get_string_resource (dpy, res_name, res_class);
+ char *os = s;
+ if (! s) return 0;
+ for (tmp = buf; *s; s++)
+ *tmp++ = isupper (*s) ? _tolower (*s) : *s;
+ *tmp = 0;
+ free (os);
+
+ while (*buf &&
+ (buf[strlen(buf)-1] == ' ' ||
+ buf[strlen(buf)-1] == '\t'))
+ buf[strlen(buf)-1] = 0;
+
+ if (!strcmp (buf, "on") || !strcmp (buf, "true") || !strcmp (buf, "yes"))
+ return 1;
+ if (!strcmp (buf,"off") || !strcmp (buf, "false") || !strcmp (buf,"no"))
+ return 0;
+ fprintf (stderr, "%s: %s must be boolean, not %s.\n",
+ progname, res_name, buf);
+ return 0;
+}
+
+int
+get_integer_resource (Display *dpy, char *res_name, char *res_class)
+{
+ int val;
+ char c, *s = get_string_resource (dpy, res_name, res_class);
+ char *ss = s;
+ if (!s) return 0;
+
+ while (*ss && *ss <= ' ') ss++; /* skip whitespace */
+
+ if (ss[0] == '0' && (ss[1] == 'x' || ss[1] == 'X')) /* 0x: parse as hex */
+ {
+ if (1 == sscanf (ss+2, "%x %c", (unsigned int *) &val, &c))
+ {
+ free (s);
+ return val;
+ }
+ }
+ else /* else parse as dec */
+ {
+ if (1 == sscanf (ss, "%d %c", &val, &c))
+ {
+ free (s);
+ return val;
+ }
+ }
+
+ fprintf (stderr, "%s: %s must be an integer, not %s.\n",
+ progname, res_name, s);
+ free (s);
+ return 0;
+}
+
+double
+get_float_resource (Display *dpy, char *res_name, char *res_class)
+{
+ double val;
+ char c, *s = get_string_resource (dpy, res_name, res_class);
+ if (! s) return 0.0;
+ if (1 == sscanf (s, " %lf %c", &val, &c))
+ {
+ free (s);
+ return val;
+ }
+ fprintf (stderr, "%s: %s must be a float, not %s.\n",
+ progname, res_name, s);
+ free (s);
+ return 0.0;
+}
+
+#endif /* !HAVE_COCOA */
+
+
+/* These functions are the same with Xlib and Cocoa:
+ */
+
+
+unsigned int
+get_pixel_resource (Display *dpy, Colormap cmap,
+ char *res_name, char *res_class)
+{
+ XColor color;
+ char *s = get_string_resource (dpy, res_name, res_class);
+ char *s2;
+ Bool ok = True;
+ if (!s) goto DEFAULT;
+
+ for (s2 = s + strlen(s) - 1; s2 > s; s2--)
+ if (*s2 == ' ' || *s2 == '\t')
+ *s2 = 0;
+ else
+ break;
+
+ if (! XParseColor (dpy, cmap, s, &color))
+ {
+ fprintf (stderr, "%s: can't parse color %s", progname, s);
+ ok = False;
+ goto DEFAULT;
+ }
+ if (! XAllocColor (dpy, cmap, &color))
+ {
+ fprintf (stderr, "%s: couldn't allocate color %s", progname, s);
+ ok = False;
+ goto DEFAULT;
+ }
+ free (s);
+ return color.pixel;
+ DEFAULT:
+ if (s) free (s);
+
+ {
+ Bool black_p = (strlen(res_class) >= 10 &&
+ !strcasecmp ("Background",
+ res_class + strlen(res_class) - 10));
+ if (!ok)
+ fprintf (stderr, ": using %s.\n", (black_p ? "black" : "white"));
+ color.flags = DoRed|DoGreen|DoBlue;
+ color.red = color.green = color.blue = (black_p ? 0 : 0xFFFF);
+ if (XAllocColor (dpy, cmap, &color))
+ return color.pixel;
+ else
+ {
+ fprintf (stderr, "%s: couldn't allocate %s either!\n", progname,
+ (black_p ? "black" : "white"));
+ /* We can't use BlackPixel/WhitePixel here, because we don't know
+ what screen we're allocating on (only an issue when running inside
+ the xscreensaver daemon: for hacks, DefaultScreen is fine.)
+ */
+ return 0;
+ }
+ }
+}
+
+
+int
+parse_time (const char *string, Bool seconds_default_p, Bool silent_p)
+{
+ unsigned int h, m, s;
+ char c;
+ if (3 == sscanf (string, " %u : %2u : %2u %c", &h, &m, &s, &c))
+ ;
+ else if (2 == sscanf (string, " : %2u : %2u %c", &m, &s, &c) ||
+ 2 == sscanf (string, " %u : %2u %c", &m, &s, &c))
+ h = 0;
+ else if (1 == sscanf (string, " : %2u %c", &s, &c))
+ h = m = 0;
+ else if (1 == sscanf (string, " %u %c",
+ (seconds_default_p ? &s : &m), &c))
+ {
+ h = 0;
+ if (seconds_default_p) m = 0;
+ else s = 0;
+ }
+ else
+ {
+ if (! silent_p)
+ fprintf (stderr, "%s: invalid time interval specification \"%s\".\n",
+ progname, string);
+ return -1;
+ }
+ if (s >= 60 && (h != 0 || m != 0))
+ {
+ if (! silent_p)
+ fprintf (stderr, "%s: seconds > 59 in \"%s\".\n", progname, string);
+ return -1;
+ }
+ if (m >= 60 && h > 0)
+ {
+ if (! silent_p)
+ fprintf (stderr, "%s: minutes > 59 in \"%s\".\n", progname, string);
+ return -1;
+ }
+ return ((h * 60 * 60) + (m * 60) + s);
+}
+
+static unsigned int
+get_time_resource (Display *dpy, char *res_name, char *res_class, Bool sec_p)
+{
+ int val;
+ char *s = get_string_resource (dpy, res_name, res_class);
+ if (!s) return 0;
+ val = parse_time (s, sec_p, False);
+ free (s);
+ return (val < 0 ? 0 : val);
+}
+
+unsigned int
+get_seconds_resource (Display *dpy, char *res_name, char *res_class)
+{
+ return get_time_resource (dpy, res_name, res_class, True);
+}
+
+unsigned int
+get_minutes_resource (Display *dpy, char *res_name, char *res_class)
+{
+ return get_time_resource (dpy, res_name, res_class, False);
+}
--- /dev/null
+/* xscreensaver, Copyright (c) 1992, 1997, 2001, 2003, 2006
+ * 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 above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#ifndef __XSCREENSAVER_RESOURCES_H__
+#define __XSCREENSAVER_RESOURCES_H__
+
+extern char *get_string_resource (Display*,char*,char*);
+extern Bool get_boolean_resource (Display*,char*,char*);
+extern int get_integer_resource (Display*,char*,char*);
+extern double get_float_resource (Display*,char*,char*);
+extern unsigned int get_pixel_resource (Display*,Colormap,char*,char*);
+extern unsigned int get_minutes_resource (Display*,char*,char*);
+extern unsigned int get_seconds_resource (Display*,char*,char*);
+extern int parse_time (const char *string, Bool seconds_default_p,
+ Bool silent_p);
+extern Pixmap
+xscreensaver_logo (Screen *screen, Visual *visual,
+ Drawable drawable, Colormap cmap,
+ unsigned long background_color,
+ unsigned long **pixels_ret, int *npixels_ret,
+ Pixmap *mask_ret,
+ Bool big_p);
+
+#endif /* __XSCREENSAVER_RESOURCES_H__ */
--- /dev/null
+/* xscreensaver, Copyright (c) 1992, 1996, 1997, 2003
+ * 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 above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#else /* !HAVE_CONFIG_H */
+# ifndef NO_SELECT
+# define HAVE_SELECT
+# endif
+#endif /* !HAVE_CONFIG_H */
+
+#ifdef __STDC__
+# include <stdlib.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#if defined(VMS)
+# include <descrip.h>
+# include <stdio.h>
+# include <lib$routines.h>
+#elif defined(HAVE_SELECT)
+# include <sys/time.h> /* for struct timeval */
+#endif
+
+
+#ifdef __SCREENHACK_USLEEP_H__
+ERROR, do not include that here
+#endif
+
+extern void screenhack_usleep (unsigned long usecs); /* suppress warning */
+
+void
+screenhack_usleep (unsigned long usecs)
+{
+# if defined(VMS)
+ float seconds = ((float) usecs)/1000000.0;
+ unsigned long int statvms = lib$wait(&seconds);
+
+#elif defined(HAVE_SELECT)
+ /* usleep() doesn't exist everywhere, and select() is faster anyway. */
+ struct timeval tv;
+ tv.tv_sec = usecs / 1000000L;
+ tv.tv_usec = usecs % 1000000L;
+ (void) select (0, 0, 0, 0, &tv);
+
+#else /* !VMS && !HAVE_SELECT */
+ /* If you don't have select() or usleep(), I guess you lose...
+ Maybe you have napms() instead? Let me know. */
+ usleep (usecs);
+
+#endif /* !VMS && !HAVE_SELECT */
+}
--- /dev/null
+/* xscreensaver, Copyright (c) 1992, 1996 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 above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#ifndef __SCREENHACK_USLEEP_H__
+#define __SCREENHACK_USLEEP_H__
+
+extern void screenhack_usleep (unsigned long usecs);
+
+#undef usleep
+#define usleep(usecs) screenhack_usleep(usecs)
+
+#endif /* __SCREENHACK_USLEEP_H__ */
--- /dev/null
+/* xscreensaver, Copyright (c) 1997, 2006 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 above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+
+#ifdef HAVE_COCOA
+# include "jwxyz.h"
+#else /* !HAVE_COCOA - real X11 */
+# include <X11/Xlib.h>
+# include <X11/Xutil.h>
+# include <X11/Xos.h>
+#endif /* !HAVE_COCOA */
--- /dev/null
+/* xscreensaver, Copyright (c) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2006
+ *
+ *
+ * by 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 above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+/* This file contains some code for intelligently picking the best visual
+ (where "best" is biased in the direction of either: high color counts;
+ or: having writable color cells...)
+ */
+
+#include "utils.h"
+#include "resources.h" /* for get_string_resource() */
+#include "visual.h"
+
+#include <string.h>
+#include <X11/Xutil.h>
+
+extern char *progname;
+
+
+#ifndef isupper
+# define isupper(c) ((c) >= 'A' && (c) <= 'Z')
+#endif
+#ifndef _tolower
+# define _tolower(c) ((c) - 'A' + 'a')
+#endif
+
+
+static Visual *pick_best_visual (Screen *, Bool, Bool);
+static Visual *pick_mono_visual (Screen *);
+static Visual *pick_best_visual_of_class (Screen *, int);
+static Visual *pick_best_gl_visual (Screen *);
+
+
+#define DEFAULT_VISUAL -1
+#define BEST_VISUAL -2
+#define MONO_VISUAL -3
+#define GRAY_VISUAL -4
+#define COLOR_VISUAL -5
+#define GL_VISUAL -6
+#define SPECIFIC_VISUAL -7
+
+Visual *
+get_visual (Screen *screen, const char *string, Bool prefer_writable_cells,
+ Bool verbose_p)
+{
+ char *v = (string ? strdup(string) : 0);
+ char c, *tmp;
+ int vclass;
+ unsigned long id;
+ Visual *result = 0;
+
+ if (v)
+ for (tmp = v; *tmp; tmp++)
+ if (isupper (*tmp)) *tmp = _tolower (*tmp);
+
+ if (!v || !*v) vclass = BEST_VISUAL;
+ else if (!strcmp (v, "default")) vclass = DEFAULT_VISUAL;
+ else if (!strcmp (v, "best")) vclass = BEST_VISUAL;
+ else if (!strcmp (v, "mono")) vclass = MONO_VISUAL;
+ else if (!strcmp (v, "monochrome")) vclass = MONO_VISUAL;
+ else if (!strcmp (v, "gray")) vclass = GRAY_VISUAL;
+ else if (!strcmp (v, "grey")) vclass = GRAY_VISUAL;
+ else if (!strcmp (v, "color")) vclass = COLOR_VISUAL;
+ else if (!strcmp (v, "gl")) vclass = GL_VISUAL;
+ else if (!strcmp (v, "staticgray")) vclass = StaticGray;
+ else if (!strcmp (v, "staticcolor")) vclass = StaticColor;
+ else if (!strcmp (v, "truecolor")) vclass = TrueColor;
+ else if (!strcmp (v, "grayscale")) vclass = GrayScale;
+ else if (!strcmp (v, "greyscale")) vclass = GrayScale;
+ else if (!strcmp (v, "pseudocolor")) vclass = PseudoColor;
+ else if (!strcmp (v, "directcolor")) vclass = DirectColor;
+ else if (1 == sscanf (v, " %lu %c", &id, &c)) vclass = SPECIFIC_VISUAL;
+ else if (1 == sscanf (v, " 0x%lx %c", &id, &c)) vclass = SPECIFIC_VISUAL;
+ else
+ {
+ fprintf (stderr, "%s: unrecognized visual \"%s\".\n", progname, v);
+ vclass = DEFAULT_VISUAL;
+ }
+
+ if (vclass == DEFAULT_VISUAL)
+ result = DefaultVisualOfScreen (screen);
+ else if (vclass == BEST_VISUAL)
+ result = pick_best_visual (screen, prefer_writable_cells, False);
+ else if (vclass == MONO_VISUAL)
+ {
+ result = pick_mono_visual (screen);
+ if (!result && verbose_p)
+ fprintf (stderr, "%s: no monochrome visuals.\n", progname);
+ }
+ else if (vclass == GRAY_VISUAL)
+ {
+ if (prefer_writable_cells)
+ result = pick_best_visual_of_class (screen, GrayScale);
+ if (!result)
+ result = pick_best_visual_of_class (screen, StaticGray);
+ if (!result)
+ result = pick_best_visual_of_class (screen, GrayScale);
+ if (!result && verbose_p)
+ fprintf (stderr, "%s: no GrayScale or StaticGray visuals.\n",
+ progname);
+ }
+ else if (vclass == COLOR_VISUAL)
+ {
+ int class;
+ /* First see if the default visual will do. */
+ result = DefaultVisualOfScreen (screen);
+ class = visual_class(screen, result);
+ if (class != TrueColor &&
+ class != PseudoColor &&
+ class != DirectColor &&
+ class != StaticColor)
+ result = 0;
+ if (result && visual_depth(screen, result) <= 1)
+ result = 0;
+
+ /* Else, find the best non-default color visual */
+ if (!result)
+ result = pick_best_visual (screen, prefer_writable_cells, True);
+
+ if (!result && verbose_p)
+ fprintf (stderr, "%s: no color visuals.\n", progname);
+ }
+ else if (vclass == GL_VISUAL)
+ {
+ Visual *visual = pick_best_gl_visual (screen);
+ if (visual)
+ result = visual;
+ else if (verbose_p)
+ fprintf (stderr, "%s: no visual suitable for GL.\n", progname);
+ }
+ else if (vclass == SPECIFIC_VISUAL)
+ {
+ result = id_to_visual (screen, id);
+ if (!result && verbose_p)
+ fprintf (stderr, "%s: no visual with id 0x%x.\n", progname,
+ (unsigned int) id);
+ }
+ else
+ {
+ Visual *visual = pick_best_visual_of_class (screen, vclass);
+ if (visual)
+ result = visual;
+ else if (verbose_p)
+ fprintf (stderr, "%s: no visual of class %s.\n", progname, v);
+ }
+
+ if (v) free (v);
+ return result;
+}
+
+Visual *
+get_visual_resource (Screen *screen, char *name, char *class,
+ Bool prefer_writable_cells)
+{
+ char *string = get_string_resource (DisplayOfScreen (screen), name, class);
+ Visual *v = get_visual (screen, string, prefer_writable_cells, True);
+ if (string)
+ free(string);
+ if (v)
+ return v;
+ else
+ return DefaultVisualOfScreen (screen);
+}
+
+
+static Visual *
+pick_best_visual (Screen *screen, Bool prefer_writable_cells, Bool color_only)
+{
+ Visual *visual;
+
+ if (!prefer_writable_cells)
+ {
+ /* If we don't prefer writable cells, then the "best" visual is the one
+ on which we can allocate the largest range and number of colors.
+
+ Therefore, a TrueColor visual which is at least 16 bits deep is best.
+ (The assumption here being that a TrueColor of less than 16 bits is
+ really just a PseudoColor visual with a pre-allocated color cube.)
+
+ The next best thing is a PseudoColor visual of any type. After that
+ come the non-colormappable visuals, and non-color visuals.
+ */
+ if ((visual = pick_best_visual_of_class (screen, TrueColor)) &&
+ visual_depth (screen, visual) >= 16)
+ return visual;
+ }
+
+#define TRY_CLASS(CLASS) \
+ if ((visual = pick_best_visual_of_class (screen, CLASS)) && \
+ (!color_only || visual_depth(screen, visual) > 1)) \
+ return visual
+ TRY_CLASS(PseudoColor);
+ TRY_CLASS(TrueColor);
+ TRY_CLASS(DirectColor);
+ TRY_CLASS(StaticColor);
+ if (!color_only)
+ {
+ TRY_CLASS(GrayScale);
+ TRY_CLASS(StaticGray);
+ }
+#undef TRY_CLASS
+
+ visual = DefaultVisualOfScreen (screen);
+ if (!color_only || visual_depth(screen, visual) > 1)
+ return visual;
+ else
+ return 0;
+}
+
+static Visual *
+pick_mono_visual (Screen *screen)
+{
+ Display *dpy = DisplayOfScreen (screen);
+ XVisualInfo vi_in, *vi_out;
+ int out_count;
+
+ vi_in.depth = 1;
+ vi_in.screen = screen_number (screen);
+ vi_out = XGetVisualInfo (dpy, (VisualDepthMask | VisualScreenMask),
+ &vi_in, &out_count);
+ if (vi_out)
+ {
+ Visual *v = (out_count > 0 ? vi_out [0].visual : 0);
+ if (v && vi_out[0].depth != 1)
+ v = 0;
+ XFree ((char *) vi_out);
+ return v;
+ }
+ else
+ return 0;
+}
+
+
+static Visual *
+pick_best_visual_of_class (Screen *screen, int visual_class)
+{
+ /* The best visual of a class is the one which on which we can allocate
+ the largest range and number of colors, which means the one with the
+ greatest depth and number of cells.
+
+ (But actually, for XDaliClock, all visuals of the same class are
+ probably equivalent - either we have writable cells or we don't.)
+ */
+ Display *dpy = DisplayOfScreen (screen);
+ XVisualInfo vi_in, *vi_out;
+ int out_count;
+
+ vi_in.class = visual_class;
+ vi_in.screen = screen_number (screen);
+ vi_out = XGetVisualInfo (dpy, (VisualClassMask | VisualScreenMask),
+ &vi_in, &out_count);
+ if (vi_out)
+ {
+ /* choose the 'best' one, if multiple */
+ int i, best;
+ Visual *visual;
+/* for (i = 0, best = 0; i < out_count; i++) */
+ for (i = out_count-1, best = i; i >= 0; i--) /* go backwards */
+ /* It's better if it's deeper, or if it's the same depth with
+ more cells (does that ever happen? Well, it could...) */
+ if ((vi_out [i].depth > vi_out [best].depth) ||
+ ((vi_out [i].depth == vi_out [best].depth) &&
+ (vi_out [i].colormap_size > vi_out [best].colormap_size)))
+ best = i;
+ visual = (best < out_count ? vi_out [best].visual : 0);
+ XFree ((char *) vi_out);
+ return visual;
+ }
+ else
+ return 0;
+}
+
+static Visual *
+pick_best_gl_visual (Screen *screen)
+{
+ /* The best visual for GL is a TrueColor visual that is half as deep as
+ the screen. If such a thing doesn't exist, then TrueColor is best.
+ Failing that, the deepest available color visual is best.
+
+ Compare this function to get_gl_visual() in visual-gl.c.
+ This function tries to find the best GL visual using Xlib calls,
+ whereas that function does the same thing using GLX calls.
+ */
+ Display *dpy = DisplayOfScreen (screen);
+ XVisualInfo vi_in, *vi_out;
+ int out_count;
+ Visual *result = 0;
+
+ int ndepths = 0;
+ int *depths = XListDepths (dpy, screen_number (screen), &ndepths);
+ int screen_depth = depths[ndepths];
+ XFree (depths);
+
+ vi_in.class = TrueColor;
+ vi_in.screen = screen_number (screen);
+ vi_in.depth = screen_depth / 2;
+ vi_out = XGetVisualInfo (dpy, (VisualClassMask | VisualScreenMask |
+ VisualDepthMask),
+ &vi_in, &out_count);
+ if (out_count > 0)
+ result = vi_out[0].visual;
+
+ if (vi_out)
+ XFree ((char *) vi_out);
+
+ if (!result && screen_depth > 24)
+ {
+ /* If it's a 32-deep screen and we didn't find a depth-16 visual,
+ see if there's a depth-12 visual. */
+ vi_in.class = TrueColor;
+ vi_in.screen = screen_number (screen);
+ vi_in.depth = 12;
+ vi_out = XGetVisualInfo (dpy, (VisualClassMask | VisualScreenMask |
+ VisualDepthMask),
+ &vi_in, &out_count);
+ if (out_count > 0)
+ result = vi_out[0].visual;
+ }
+
+ if (!result)
+ /* No half-depth TrueColor? Ok, try for any TrueColor (the deepest.) */
+ result = pick_best_visual_of_class (screen, TrueColor);
+
+ if (!result)
+ /* No TrueColor? Ok, try for anything. */
+ result = pick_best_visual (screen, False, False);
+
+ return result;
+}
+
+
+Visual *
+id_to_visual (Screen *screen, int id)
+{
+ Display *dpy = DisplayOfScreen (screen);
+ XVisualInfo vi_in, *vi_out;
+ int out_count;
+ vi_in.screen = screen_number (screen);
+ vi_in.visualid = id;
+ vi_out = XGetVisualInfo (dpy, (VisualScreenMask | VisualIDMask),
+ &vi_in, &out_count);
+ if (vi_out)
+ {
+ Visual *v = vi_out[0].visual;
+ XFree ((char *) vi_out);
+ return v;
+ }
+ return 0;
+}
+
+int
+visual_depth (Screen *screen, Visual *visual)
+{
+ Display *dpy = DisplayOfScreen (screen);
+ XVisualInfo vi_in, *vi_out;
+ int out_count, d;
+ vi_in.screen = screen_number (screen);
+ vi_in.visualid = XVisualIDFromVisual (visual);
+ vi_out = XGetVisualInfo (dpy, VisualScreenMask|VisualIDMask,
+ &vi_in, &out_count);
+ if (! vi_out) abort ();
+ d = vi_out [0].depth;
+ XFree ((char *) vi_out);
+ return d;
+}
+
+
+#if 0
+/* You very probably don't want to be using this.
+ Pixmap depth doesn't refer to the depths of pixmaps, but rather, to
+ the depth of protocol-level on-the-wire pixmap data, that is, XImages.
+ To get this info, you should be looking at XImage->bits_per_pixel
+ instead. (And allocating the data for your XImage structures by
+ multiplying ximage->bytes_per_line by ximage->height.)
+ */
+int
+visual_pixmap_depth (Screen *screen, Visual *visual)
+{
+ Display *dpy = DisplayOfScreen (screen);
+ int vdepth = visual_depth (screen, visual);
+ int pdepth = vdepth;
+ int i, pfvc = 0;
+ XPixmapFormatValues *pfv = XListPixmapFormats (dpy, &pfvc);
+
+ /* Return the first matching depth in the pixmap formats. If there are no
+ matching pixmap formats (which shouldn't be able to happen at all) then
+ return the visual depth instead. */
+ for (i = 0; i < pfvc; i++)
+ if (pfv[i].depth == vdepth)
+ {
+ pdepth = pfv[i].bits_per_pixel;
+ break;
+ }
+ if (pfv)
+ XFree (pfv);
+ return pdepth;
+}
+#endif /* 0 */
+
+
+int
+visual_class (Screen *screen, Visual *visual)
+{
+ Display *dpy = DisplayOfScreen (screen);
+ XVisualInfo vi_in, *vi_out;
+ int out_count, c;
+ vi_in.screen = screen_number (screen);
+ vi_in.visualid = XVisualIDFromVisual (visual);
+ vi_out = XGetVisualInfo (dpy, VisualScreenMask|VisualIDMask,
+ &vi_in, &out_count);
+ if (! vi_out) abort ();
+ c = vi_out [0].class;
+ XFree ((char *) vi_out);
+ return c;
+}
+
+Bool
+has_writable_cells (Screen *screen, Visual *visual)
+{
+ switch (visual_class (screen, visual))
+ {
+ case GrayScale: /* Mappable grays. */
+ case PseudoColor: /* Mappable colors. */
+ case DirectColor: /* Like TrueColor, but with three colormaps:
+ one each for red, green, and blue. */
+ return True;
+ case StaticGray: /* Fixed grays. */
+ case TrueColor: /* Fixed colors. */
+ case StaticColor: /* Like PseudoColor with an unmodifiable colormap. */
+ return False;
+ default:
+ abort();
+ return False;
+ }
+}
+
+void
+describe_visual (FILE *f, Screen *screen, Visual *visual, Bool private_cmap_p)
+{
+ char n[10];
+ Display *dpy = DisplayOfScreen (screen);
+ XVisualInfo vi_in, *vi_out;
+ int out_count;
+ vi_in.screen = screen_number (screen);
+ vi_in.visualid = XVisualIDFromVisual (visual);
+ vi_out = XGetVisualInfo (dpy, (VisualScreenMask | VisualIDMask),
+ &vi_in, &out_count);
+ if (! vi_out) abort ();
+ if (private_cmap_p)
+ sprintf(n, "%3d", vi_out->colormap_size);
+ else
+ strcpy(n, "default");
+
+ fprintf (f, "0x%02x (%s depth: %2d, cmap: %s)\n",
+ (unsigned int) vi_out->visualid,
+ (vi_out->class == StaticGray ? "StaticGray, " :
+ vi_out->class == StaticColor ? "StaticColor," :
+ vi_out->class == TrueColor ? "TrueColor, " :
+ vi_out->class == GrayScale ? "GrayScale, " :
+ vi_out->class == PseudoColor ? "PseudoColor," :
+ vi_out->class == DirectColor ? "DirectColor," :
+ "UNKNOWN: "),
+ vi_out->depth, n);
+ XFree ((char *) vi_out);
+}
+
+int
+screen_number (Screen *screen)
+{
+ Display *dpy = DisplayOfScreen (screen);
+ int i;
+ for (i = 0; i < ScreenCount (dpy); i++)
+ if (ScreenOfDisplay (dpy, i) == screen)
+ return i;
+ abort ();
+ return 0;
+}
+
+int
+visual_cells (Screen *screen, Visual *visual)
+{
+ Display *dpy = DisplayOfScreen (screen);
+ XVisualInfo vi_in, *vi_out;
+ int out_count, c;
+ vi_in.screen = screen_number (screen);
+ vi_in.visualid = XVisualIDFromVisual (visual);
+ vi_out = XGetVisualInfo (dpy, VisualScreenMask|VisualIDMask,
+ &vi_in, &out_count);
+ if (! vi_out) abort ();
+ c = vi_out [0].colormap_size;
+ XFree ((char *) vi_out);
+ return c;
+}
+
+Visual *
+find_similar_visual(Screen *screen, Visual *old_visual)
+{
+ Display *dpy = DisplayOfScreen (screen);
+ XVisualInfo vi_in, *vi_out;
+ Visual *result = 0;
+ int out_count;
+
+ vi_in.screen = screen_number (screen);
+ vi_in.class = visual_class (screen, old_visual);
+ vi_in.depth = visual_depth (screen, old_visual);
+
+ /* Look for a visual of the same class and depth.
+ */
+ vi_out = XGetVisualInfo (dpy, (VisualScreenMask | VisualClassMask |
+ VisualDepthMask),
+ &vi_in, &out_count);
+ if (vi_out && out_count > 0)
+ result = vi_out[0].visual;
+ if (vi_out) XFree (vi_out);
+ vi_out = 0;
+
+ /* Failing that, look for a visual of the same class.
+ */
+ if (!result)
+ {
+ vi_out = XGetVisualInfo (dpy, (VisualScreenMask | VisualClassMask),
+ &vi_in, &out_count);
+ if (vi_out && out_count > 0)
+ result = vi_out[0].visual;
+ if (vi_out) XFree (vi_out);
+ vi_out = 0;
+ }
+
+ /* Failing that, return the default visual. */
+ if (!result)
+ result = DefaultVisualOfScreen (screen);
+
+ return result;
+}
--- /dev/null
+/* xscreensaver, Copyright (c) 1993-2000 by 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 above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#ifndef __VISUAL_H__
+#define __VISUAL_H__
+
+extern Visual *get_visual (Screen *, const char *name, Bool, Bool);
+extern Visual *get_visual_resource (Screen *, char *, char *, Bool);
+extern int visual_depth (Screen *, Visual *);
+/* extern int visual_pixmap_depth (Screen *, Visual *); */
+extern int visual_class (Screen *, Visual *);
+extern int visual_cells (Screen *, Visual *);
+extern int screen_number (Screen *);
+extern Visual *find_similar_visual (Screen *, Visual *old);
+extern void describe_visual (FILE *f, Screen *, Visual *, Bool private_cmap_p);
+extern Visual *get_overlay_visual (Screen *, unsigned long *pixel_return);
+extern Bool has_writable_cells (Screen *, Visual *);
+extern Visual *id_to_visual (Screen *, int);
+
+extern Visual *get_gl_visual (Screen *);
+extern void describe_gl_visual (FILE *, Screen *, Visual *, Bool priv_cmap_p);
+extern Bool validate_gl_visual (FILE *, Screen *, const char *, Visual *);
+
+#endif /* __VISUAL_H__ */
--- /dev/null
+/* -*- Mode: C; tab-width: 2 -*- */
+/*****************************************************************************/
+/** Copyright 1991 by Andreas Stolcke **/
+/** Copyright 1990 by Solbourne Computer Inc. **/
+/** Longmont, Colorado **/
+/** **/
+/** 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 permis- **/
+/** sion notice appear in supporting documentation, and that the **/
+/** name of Solbourne not be used in advertising **/
+/** in publicity pertaining to distribution of the software without **/
+/** specific, written prior permission. **/
+/** **/
+/** ANDREAS STOLCKE AND SOLBOURNE COMPUTER INC. DISCLAIMS ALL WARRANTIES **/
+/** WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF **/
+/** MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL ANDREAS STOLCKE **/
+/** OR SOLBOURNE 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. **/
+/*****************************************************************************/
+/*
+ * vroot.h -- Virtual Root Window handling header file
+ *
+ * This header file redefines the X11 macros RootWindow and DefaultRootWindow,
+ * making them look for a virtual root window as provided by certain `virtual'
+ * window managers like swm and tvtwm. If none is found, the ordinary root
+ * window is returned, thus retaining backward compatibility with standard
+ * window managers.
+ * The function implementing the virtual root lookup remembers the result of
+ * its last invocation to avoid overhead in the case of repeated calls
+ * on the same display and screen arguments.
+ * The lookup code itself is taken from Tom LaStrange's ssetroot program.
+ *
+ * Most simple root window changing X programs can be converted to using
+ * virtual roots by just including
+ *
+ * #include <X11/vroot.h>
+ *
+ * after all the X11 header files. It has been tested on such popular
+ * X clients as xphoon, xfroot, xloadimage, and xaqua.
+ * It also works with the core clients xprop, xwininfo, xwd, and editres
+ * (and is necessary to get those clients working under tvtwm).
+ * It does NOT work with xsetroot; get the xsetroot replacement included in
+ * the tvtwm distribution instead.
+ *
+ * Andreas Stolcke <stolcke@ICSI.Berkeley.EDU>, 9/7/90
+ * - replaced all NULL's with properly cast 0's, 5/6/91
+ * - free children list (suggested by Mark Martin <mmm@cetia.fr>), 5/16/91
+ * - include X11/Xlib.h and support RootWindowOfScreen, too 9/17/91
+ *
+ * Jamie Zawinski <jwz@jwz.org>, 28-Apr-1997
+ * - use ANSI C
+ *
+ * Jamie Zawinski <jwz@jwz.org>, 3-Sep-2003
+ * - if the environment variable "XSCREENSAVER_WINDOW" is set, use that
+ * as the root window instead of searching for __SWM_VROOT.
+ *
+ * Jamie Zawinski <jwz@jwz.org>, 14-Aug-2004
+ * - changes to get gcc to stop whining about "type punning".
+ *
+ * Jamie Zawinski <jwz@jwz.org>, 16-Dec-2004
+ * - fixed that last fix.
+ */
+
+#ifndef _VROOT_H_
+#define _VROOT_H_
+#define _XSCREENSAVER_VROOT_H_
+
+#if !defined(lint) && !defined(SABER)
+static const char vroot_rcsid[] =
+ "#Id: vroot.h,v 1.8 2004/12/16 05:33:54 jwz Exp #" "\n"
+ "#Id: vroot.h,v 1.4 1991/09/30 19:23:16 stolcke Exp stolcke #";
+#endif
+
+#include <X11/X.h>
+#include <X11/Xatom.h>
+#include <X11/Xlib.h>
+
+static Window
+#ifdef __STDC__ /* ANSIfication added by jwz, to avoid superfluous warnings. */
+VirtualRootWindowOfScreen(Screen *screen)
+#else /* !__STDC__ */
+VirtualRootWindowOfScreen(screen) Screen *screen;
+#endif /* !__STDC__ */
+{
+ static Screen *save_screen = (Screen *)0;
+ static Window root = (Window)0;
+
+ if (screen != save_screen) {
+ Display *dpy = DisplayOfScreen(screen);
+ Atom __SWM_VROOT = None;
+ int i;
+ Window rootReturn, parentReturn, *children;
+ unsigned int numChildren;
+
+ /* first check for a hex or decimal window ID in the environment */
+ const char *xss_id = getenv("XSCREENSAVER_WINDOW");
+ if (xss_id && *xss_id) {
+ unsigned long id = 0;
+ char c;
+ if (1 == sscanf (xss_id, " 0x%lx %c", &id, &c) ||
+ 1 == sscanf (xss_id, " %lu %c", &id, &c)) {
+ root = (Window) id;
+ save_screen = screen;
+ return root;
+ }
+ }
+
+ root = RootWindowOfScreen(screen);
+
+ /* go look for a virtual root */
+ __SWM_VROOT = XInternAtom(dpy, "__SWM_VROOT", False);
+ if (XQueryTree(dpy, root, &rootReturn, &parentReturn,
+ &children, &numChildren)) {
+ for (i = 0; i < numChildren; i++) {
+ Atom actual_type;
+ int actual_format;
+ unsigned long nitems, bytesafter;
+ unsigned char *newRoot = 0;
+
+ if (XGetWindowProperty(dpy, children[i],
+ __SWM_VROOT, 0, 1, False, XA_WINDOW,
+ &actual_type, &actual_format,
+ &nitems, &bytesafter,
+ &newRoot) == Success
+ && newRoot) {
+ root = *((Window *) newRoot);
+ break;
+ }
+ }
+ if (children)
+ XFree((char *)children);
+ }
+
+ save_screen = screen;
+ }
+
+ return root;
+}
+
+#undef RootWindowOfScreen
+#define RootWindowOfScreen(s) VirtualRootWindowOfScreen(s)
+
+#undef RootWindow
+#define RootWindow(dpy,screen) VirtualRootWindowOfScreen(ScreenOfDisplay(dpy,screen))
+
+#undef DefaultRootWindow
+#define DefaultRootWindow(dpy) VirtualRootWindowOfScreen(DefaultScreenOfDisplay(dpy))
+
+#endif /* _VROOT_H_ */
--- /dev/null
+/* This file contains compatibility routines for systems without Xmu.
+ * You would be better served by installing Xmu on your machine or
+ * yelling at your vendor to ship it.
+ */
+
+#ifndef __XMU_H__
+#define __XMU_H__
+
+#include <X11/Xlib.h>
+#include <stdio.h>
+
+int XmuPrintDefaultErrorMessage (Display *dpy, XErrorEvent *event, FILE *fp);
+
+#endif /* __XMU_H__ */
--- /dev/null
+/* yarandom.c -- Yet Another Random Number Generator.
+ * Copyright (c) 1997, 1998, 2003 by 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 above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+/* The unportable mess that is rand(), random(), drand48() and friends led me
+ to ask Phil Karlton <karlton@netscape.com> what the Right Thing to Do was.
+ He responded with this. It is non-cryptographically secure, reasonably
+ random (more so than anything that is in any C library), and very fast.
+
+ I don't understand how it works at all, but he says "look at Knuth,
+ Vol. 2 (original edition), page 26, Algorithm A. In this case n=55,
+ k=24 and m=2^32."
+
+ So there you have it.
+
+ ---------------------------
+ Note: xlockmore 4.03a10 uses this very simple RNG:
+
+ if ((seed = seed % 44488 * 48271 - seed / 44488 * 3399) < 0)
+ seed += 2147483647;
+ return seed-1;
+
+ of which it says
+
+ ``Dr. Park's algorithm published in the Oct. '88 ACM "Random Number
+ Generators: Good Ones Are Hard To Find" His version available at
+ ftp://cs.wm.edu/pub/rngs.tar Present form by many authors.''
+
+ Karlton says: ``the usual problem with that kind of RNG turns out to
+ be unexepected short cycles for some word lengths.''
+
+ Karlton's RNG is faster, since it does three adds and two stores, while the
+ xlockmore RNG does two multiplies, two divides, three adds, and one store.
+
+ Compiler optimizations make a big difference here:
+ gcc -O: difference is 1.2x.
+ gcc -O2: difference is 1.4x.
+ gcc -O3: difference is 1.5x.
+ SGI cc -O: difference is 2.4x.
+ SGI cc -O2: difference is 2.4x.
+ SGI cc -O3: difference is 5.1x.
+ Irix 6.2; Indy r5k; SGI cc version 6; gcc version 2.7.2.1.
+ */
+
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h> /* for getpid() */
+#endif
+#include <sys/time.h> /* for gettimeofday() */
+
+#include "yarandom.h"
+# undef ya_rand_init
+
+
+/* The following 'random' numbers are taken from CRC, 18th Edition, page 622.
+ Each array element was taken from the corresponding line in the table,
+ except that a[0] was from line 100. 8s and 9s in the table were simply
+ skipped. The high order digit was taken mod 4.
+ */
+#define VectorSize 55
+static unsigned int a[VectorSize] = {
+ 035340171546, 010401501101, 022364657325, 024130436022, 002167303062, /* 5 */
+ 037570375137, 037210607110, 016272055420, 023011770546, 017143426366, /* 10 */
+ 014753657433, 021657231332, 023553406142, 004236526362, 010365611275, /* 14 */
+ 007117336710, 011051276551, 002362132524, 001011540233, 012162531646, /* 20 */
+ 007056762337, 006631245521, 014164542224, 032633236305, 023342700176, /* 25 */
+ 002433062234, 015257225043, 026762051606, 000742573230, 005366042132, /* 30 */
+ 012126416411, 000520471171, 000725646277, 020116577576, 025765742604, /* 35 */
+ 007633473735, 015674255275, 017555634041, 006503154145, 021576344247, /* 40 */
+ 014577627653, 002707523333, 034146376720, 030060227734, 013765414060, /* 45 */
+ 036072251540, 007255221037, 024364674123, 006200353166, 010126373326, /* 50 */
+ 015664104320, 016401041535, 016215305520, 033115351014, 017411670323 /* 55 */
+};
+
+static int i1, i2;
+
+unsigned int
+ya_random (void)
+{
+ register int ret = a[i1] + a[i2];
+ a[i1] = ret;
+ if (++i1 >= VectorSize) i1 = 0;
+ if (++i2 >= VectorSize) i2 = 0;
+ return ret;
+}
+
+void
+ya_rand_init(unsigned int seed)
+{
+ int i;
+ if (seed == 0)
+ {
+ struct timeval tp;
+#ifdef GETTIMEOFDAY_TWO_ARGS
+ struct timezone tzp;
+ gettimeofday(&tp, &tzp);
+#else
+ gettimeofday(&tp);
+#endif
+ /* ignore overflow */
+ seed = (999*tp.tv_sec) + (1001*tp.tv_usec) + (1003 * getpid());
+ }
+
+ a[0] += seed;
+ for (i = 1; i < VectorSize; i++)
+ {
+ seed = a[i-1]*1001 + seed*999;
+ a[i] += seed;
+ }
+
+ i1 = a[0] % VectorSize;
+ i2 = (i1 + 24) % VectorSize;
+}
--- /dev/null
+/* xscreensaver, Copyright (c) 1997, 1998, 2003 by 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 above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#ifndef __YARANDOM_H__
+#define __YARANDOM_H__
+
+#undef random
+#undef rand
+#undef drand48
+#undef srandom
+#undef srand
+#undef srand48
+#undef frand
+#undef RAND_MAX
+
+#ifdef VMS
+# include "vms-gtod.h"
+#endif
+
+extern unsigned int ya_random (void);
+extern void ya_rand_init (unsigned int);
+
+#define random() ya_random()
+#define RAND_MAX 0xFFFFFFFF
+
+/*#define srandom(i) ya_rand_init(0)*/
+
+/* Define these away to keep people from using the wrong APIs in xscreensaver.
+ */
+#define rand __ERROR_use_random_not_rand_in_xscreensaver__
+#define drand48 __ERROR_use_frand_not_drand48_in_xscreensaver__
+#define srandom __ERROR_do_not_call_srandom_in_xscreensaver__
+#define srand __ERROR_do_not_call_srand_in_xscreensaver__
+#define srand48 __ERROR_do_not_call_srand48_in_xscreensaver__
+#define ya_rand_init __ERROR_do_not_call_ya_rand_init_in_xscreensaver__
+
+
+#if defined (__GNUC__) && (__GNUC__ >= 2)
+ /* Implement frand using GCC's statement-expression extension. */
+
+# define frand(f) \
+ __extension__ \
+ ({ double tmp = ((((double) random()) * ((double) (f))) / \
+ ((double) ((unsigned int)~0))); \
+ tmp < 0 ? (-tmp) : tmp; })
+
+#else /* not GCC2 - implement frand using a global variable.*/
+
+static double _frand_tmp_;
+# define frand(f) \
+ (_frand_tmp_ = ((((double) random()) * ((double) (f))) / \
+ ((double) ((unsigned int)~0))), \
+ _frand_tmp_ < 0 ? (-_frand_tmp_) : _frand_tmp_)
+
+#endif /* not GCC2 */
+
+#endif /* __YARANDOM_H__ */
projects / unicode-screensaver.git / commitdiff