X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=hacks%2Fscreenhack.c;h=eb9d7185e0058dd0cd3e3e1c042d8a94f26d1fcb;hb=551b3de3f619c04c2dd1971ee9b3f02e270c28c9;hp=0bbd4be20c5d66391484fa5aac0c2a79f0f699b0;hpb=0a1527cc01e9894017614b7c36b838b2b6914ba9;p=xscreensaver diff --git a/hacks/screenhack.c b/hacks/screenhack.c index 0bbd4be2..eb9d7185 100644 --- a/hacks/screenhack.c +++ b/hacks/screenhack.c @@ -1,4 +1,5 @@ -/* xscreensaver, Copyright (c) 1992 Jamie Zawinski +/* xscreensaver, Copyright (c) 1992, 1995, 1997, 1998 + * Jamie Zawinski * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that @@ -21,40 +22,64 @@ - create a variable `char *progclass' which names this program's resource class. - - create a variable `char defaults []' for the default resources. + - create a variable `char defaults []' for the default resources, and + null-terminate it. - - create a variable `XrmOptionDescRec options []' for the command-line, - and `int options_size' which is `XtNumber (options)'. + - create a variable `XrmOptionDescRec options[]' for the command-line, + and null-terminate it. And that's it... */ -#include "version.h" - #include #include #include #include -#include +#include +#include +#include +#include + +#ifdef __sgi +# include /* for SgiUseSchemes() */ +#endif /* __sgi */ + +#ifdef HAVE_XMU +# ifndef VMS +# include +# else /* VMS */ +# include +# endif +#else +# include "xmu.h" +#endif #include "screenhack.h" +#include "version.h" +#include "vroot.h" char *progname; XrmDatabase db; +XtAppContext app; Bool mono_p; - 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 }, + { 0, 0, 0, 0 } }; static char *default_defaults[] = { - "*root: false", - "*geometry: 500x500", /* this should be .geometry, but nooooo... */ + ".root: false", + "*geometry: 600x480", /* this should be .geometry, but nooooo... */ "*mono: false", "*installColormap: false", + "*visualID: default", + "*windowID: ", 0 }; @@ -63,24 +88,53 @@ static int merged_options_size; static char **merged_defaults; static void -merge_options () +merge_options (void) { - int options_sizeof = options_size * sizeof (options[0]); - int defaults_size; - merged_options_size = XtNumber (default_options) + options_size; + 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); - bcopy (options, merged_options, options_sizeof); - bcopy (default_options, merged_options + options_size, - 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 *))); - bcopy (default_defaults, merged_defaults, sizeof (default_defaults)); - bcopy (defaults, merged_defaults - 1 + - (sizeof (default_defaults) / sizeof (default_defaults[0])), - ((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; + } + } } @@ -89,9 +143,7 @@ merge_options () */ 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)) @@ -102,30 +154,121 @@ screenhack_ehandler (dpy, error) } 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); } +#ifdef USE_GL +extern Visual *get_gl_visual (Screen *, const char *, const char *); +#endif + +#ifdef XLOCKMORE +extern void pre_merge_options (void); +#endif + + +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. + */ +void +screenhack_handle_event (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 */ + exit (0); + 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 + { + exit (0); + } + } + break; + } +} + + void -main (argc, argv) - int argc; - char **argv; +screenhack_handle_events (Display *dpy) +{ + while (XPending (dpy)) + { + XEvent event; + XNextEvent (dpy, &event); + screenhack_handle_event (dpy, &event); + } +} + + + +int +main (int argc, char **argv) { - XtAppContext app; Widget toplevel; Display *dpy; Window window; + Visual *visual; Colormap cmap; Bool root_p; + Window on_window = 0; XEvent event; + Boolean dont_clear /*, dont_map */; + char version[255]; +#ifdef XLOCKMORE + pre_merge_options (); +#endif 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); @@ -133,12 +276,37 @@ main (argc, argv) db = XtDatabase (dpy); XtGetApplicationNameAndClass (dpy, &progname, &progclass); 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"); + 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++) { @@ -156,37 +324,133 @@ main (argc, argv) if (i != merged_options_size - 1) fprintf (stderr, ", "); } fprintf (stderr, ".\n"); - exit (1); + exit (help_p ? 0 : 1); } + dont_clear = get_boolean_resource ("dontClearRoot", "Boolean"); +/*dont_map = get_boolean_resource ("dontMapWindow", "Boolean"); */ mono_p = get_boolean_resource ("mono", "Boolean"); if (CellsOfScreen (DefaultScreenOfDisplay (dpy)) <= 2) mono_p = True; root_p = get_boolean_resource ("root", "Boolean"); - if (root_p) + + { + char *s = get_string_resource ("windowID", "WindowID"); + if (s && *s) + on_window = get_integer_resource ("windowID", "WindowID"); + if (s) free (s); + } + + if (on_window) + { + XWindowAttributes xgwa; + window = (Window) on_window; + XtDestroyWidget (toplevel); + XGetWindowAttributes (dpy, window, &xgwa); + cmap = xgwa.colormap; + visual = xgwa.visual; + } + else if (root_p) { XWindowAttributes xgwa; window = RootWindowOfScreen (XtScreen (toplevel)); XtDestroyWidget (toplevel); XGetWindowAttributes (dpy, window, &xgwa); cmap = xgwa.colormap; + visual = xgwa.visual; } else { - XtRealizeWidget (toplevel); - window = XtWindow (toplevel); - if (get_boolean_resource ("installColormap", "InstallColormap")) + Boolean def_visual_p; + Screen *screen = XtScreen (toplevel); + +#ifdef USE_GL + visual = get_gl_visual (screen, "visualID", "VisualID"); +#else + visual = get_visual_resource (screen, "visualID", "VisualID", False); +#endif + + if (toplevel->core.width <= 0) + toplevel->core.width = 600; + if (toplevel->core.height <= 0) + toplevel->core.height = 480; + + def_visual_p = (visual == DefaultVisualOfScreen (screen)); + + if (!def_visual_p) { - cmap = XCreateColormap (dpy, window, - DefaultVisualOfScreen (XtScreen (toplevel)), - AllocNone); - XSetWindowColormap (dpy, window, cmap); + unsigned int bg, bd; + Widget new; + + cmap = XCreateColormap (dpy, RootWindowOfScreen(screen), + visual, AllocNone); + bg = get_pixel_resource ("background", "Background", dpy, cmap); + bd = get_pixel_resource ("borderColor", "Foreground", dpy, cmap); + + new = XtVaAppCreateShell (progname, progclass, + topLevelShellWidgetClass, dpy, + XtNmappedWhenManaged, False, + XtNvisual, visual, + XtNdepth, visual_depth (screen, visual), + XtNwidth, toplevel->core.width, + XtNheight, toplevel->core.height, + XtNcolormap, cmap, + XtNbackground, (Pixel) bg, + XtNborderColor, (Pixel) bd, + 0); + XtDestroyWidget (toplevel); + toplevel = new; + XtRealizeWidget (toplevel); + window = XtWindow (toplevel); } else - cmap = DefaultColormap (dpy, DefaultScreen (dpy)); + { + XtVaSetValues (toplevel, XtNmappedWhenManaged, False, 0); + XtRealizeWidget (toplevel); + 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)); + } + } + +/* + if (dont_map) + { + XtVaSetValues (toplevel, XtNmappedWhenManaged, False, 0); + XtRealizeWidget (toplevel); + } + else +*/ + { + XtPopup (toplevel, XtGrabNone); + } + + XtVaSetValues(toplevel, XtNtitle, version, 0); + + /* For screenhack_handle_events(): select KeyPress, and + announce that we accept WM_DELETE_WINDOW. */ + { + XWindowAttributes xgwa; + XGetWindowAttributes (dpy, window, &xgwa); + XSelectInput (dpy, window, + xgwa.your_event_mask | KeyPressMask | ButtonPressMask); + XChangeProperty (dpy, window, XA_WM_PROTOCOLS, XA_ATOM, 32, + PropModeReplace, + (unsigned char *) &XA_WM_DELETE_WINDOW, 1); + } } - if (!get_boolean_resource ("dontClearWindow", "Boolean")) /* kludge-o-rama */ + + if (!dont_clear) { XSetWindowBackground (dpy, window, get_pixel_resource ("background", "Background", @@ -194,11 +458,12 @@ main (argc, argv) XClearWindow (dpy, window); } - 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); + screenhack (dpy, window); /* doesn't return */ + return 0; }