1 /* xscreensaver, Copyright (c) 1993-1998 Jamie Zawinski <jwz@netscape.com>
3 * Permission to use, copy, modify, distribute, and sell this software and its
4 * documentation for any purpose is hereby granted without fee, provided that
5 * the above copyright notice appear in all copies and that both that
6 * copyright notice and this permission notice appear in supporting
7 * documentation. No representations are made about the suitability of this
8 * software for any purpose. It is provided "as is" without express or
12 #ifndef __XSCREENSAVER_H__
13 #define __XSCREENSAVER_H__
23 extern char *progname;
24 extern char *progclass;
26 typedef struct saver_preferences saver_preferences;
27 typedef struct saver_info saver_info;
28 typedef struct saver_screen_info saver_screen_info;
32 #define countof(x) (sizeof((x))/sizeof((*x)))
36 /* This structure holds all the user-specified parameters, read from the
37 command line, the resource database, or entered through a dialog box.
39 struct saver_preferences {
40 Bool verbose_p; /* whether to print out lots of status info */
41 Bool timestamp_p; /* whether to mark messages with a timestamp */
42 Bool debug_p; /* pay no mind to the man behind the curtain */
44 Bool lock_p; /* whether to lock as well as save */
45 Bool fade_p; /* whether to fade to black */
46 Bool unfade_p; /* whether to fade from black */
47 int fade_seconds; /* how long that should take */
48 int fade_ticks; /* how many ticks should be used */
50 Bool install_cmap_p; /* whether we should use our own colormap
51 when using the screen's default visual. */
53 char **screenhacks; /* the programs to run */
54 int screenhacks_count;
56 int nice_inferior; /* nice value for subprocs */
58 int initial_delay; /* how long to sleep after launch */
59 Time timeout; /* how much idle time before activation */
60 Time lock_timeout; /* how long after activation locking starts */
61 Time cycle; /* how long each hack should run */
63 Time passwd_timeout; /* how much time before pw dialog goes down */
65 Time pointer_timeout; /* how often to check mouse position */
66 Time notice_events_timeout; /* how long after window creation to select */
67 Time watchdog_timeout; /* how often to re-raise and re-blank screen */
69 Bool use_xidle_extension; /* which extension to use, if possible */
70 Bool use_mit_saver_extension;
71 Bool use_sgi_saver_extension;
73 char *shell; /* where to find /bin/sh */
78 /* This structure holds all the data that applies to the program as a whole,
79 or to the non-screen-specific parts of the display connection.
83 saver_preferences prefs;
86 saver_screen_info *screens;
87 saver_screen_info *default_screen; /* ...on which dialogs will appear. */
89 /* =======================================================================
90 global connection info
91 ======================================================================= */
97 /* =======================================================================
99 ======================================================================= */
101 # ifdef HAVE_MIT_SAVER_EXTENSION
102 int mit_saver_ext_event_number;
103 int mit_saver_ext_error_number;
105 # ifdef HAVE_SGI_SAVER_EXTENSION
106 int sgi_saver_ext_event_number;
107 int sgi_saver_ext_error_number;
111 /* =======================================================================
113 ======================================================================= */
115 Bool screen_blanked_p; /* Whether the saver is currently active. */
116 Window mouse_grab_window; /* Window holding our mouse grab */
117 Window keyboard_grab_window; /* Window holding our keyboard grab */
120 /* =======================================================================
122 ======================================================================= */
124 Bool locking_disabled_p; /* Sometimes locking is impossible. */
125 char *nolock_reason; /* This is why. */
126 Bool locked_p; /* Whether the screen is currently locked. */
127 Bool dbox_up_p; /* Whether the demo-mode or passwd dialogs
128 are currently visible */
130 /* =======================================================================
132 ======================================================================= */
134 Bool demo_mode_p; /* Whether demo-mode is active */
135 char *demo_hack; /* The hack that has been selected from the
136 dialog box, which should be run next. */
139 /* =======================================================================
141 ======================================================================= */
143 Bool question_up_p; /* Whether the question dialog is currently
145 Widget question_dialog; /* The question dialog, if any. */
148 /* =======================================================================
150 ======================================================================= */
152 XtIntervalId lock_id; /* Timer to implement `prefs.lock_timeout' */
153 XtIntervalId cycle_id; /* Timer to implement `prefs.cycle' */
154 XtIntervalId timer_id; /* Timer to implement `prefs.timeout' */
155 XtIntervalId watchdog_id; /* Timer to implement `prefs.watchdog */
156 XtIntervalId check_pointer_timer_id; /* `prefs.pointer_timeout' */
158 time_t last_activity_time; /* Used only when no server exts. */
159 saver_screen_info *last_activity_screen;
162 /* =======================================================================
164 ======================================================================= */
166 int next_mode_p; /* Set to 1 if the NEXT ClientMessage has just
167 been received; set to 2 if PREV has just
168 been received. (#### This is nasty.) */
170 /* =======================================================================
172 ======================================================================= */
174 XtIntervalId stderr_popup_timer;
179 /* This structure holds all the data that applies to the screen-specific parts
180 of the display connection; if the display has multiple screens, there will
181 be one of these for each screen.
183 struct saver_screen_info {
187 Widget toplevel_shell;
189 /* =======================================================================
191 ======================================================================= */
193 Window screensaver_window; /* The window that will impersonate the root,
194 when the screensaver activates. Note that
195 the window stored here may change, as we
196 destroy and recreate it on different
198 Colormap cmap; /* The colormap that goes with the window. */
199 Bool install_cmap_p; /* whether we should use our own colormap.
200 This can be overridden on a per-hack basis.
202 Visual *current_visual; /* The visual of the window. */
203 Visual *default_visual; /* visual to use when none other specified */
204 int current_depth; /* How deep the visual (and the window) are. */
206 Window real_vroot; /* The original virtual-root window. */
207 Window real_vroot_value; /* What was in the __SWM_VROOT property. */
209 Cursor cursor; /* A blank cursor that goes with the
211 unsigned long black_pixel; /* Black, allocated from `cmap'. */
213 # ifdef HAVE_MIT_SAVER_EXTENSION
214 Window server_mit_saver_window;
218 /* =======================================================================
220 ======================================================================= */
222 Colormap demo_cmap; /* The colormap that goes with the dialogs:
223 this might be the same as `cmap' so care
224 must be taken not to free it while it's
227 /* =======================================================================
229 ======================================================================= */
231 int poll_mouse_last_root_x; /* Used only when no server exts. */
232 int poll_mouse_last_root_y;
233 Window poll_mouse_last_child;
234 unsigned int poll_mouse_last_mask;
237 /* =======================================================================
239 ======================================================================= */
241 int current_hack; /* Index into `prefs.screenhacks' */
246 int stderr_line_height;
247 XFontStruct *stderr_font;
249 Window stderr_overlay_window; /* Used if the server has overlay planes */
250 Colormap stderr_cmap;
256 /* =======================================================================
257 server extensions and virtual roots
258 ======================================================================= */
260 extern void restore_real_vroot (saver_info *si);
261 extern void disable_builtin_screensaver (saver_info *si, Bool turn_off_p);
262 extern Bool ensure_no_screensaver_running (Display *, Screen *);
264 #ifdef HAVE_MIT_SAVER_EXTENSION
265 extern Bool query_mit_saver_extension (saver_info *);
267 #ifdef HAVE_SGI_SAVER_EXTENSION
268 extern Bool query_sgi_saver_extension (saver_info *);
271 /* Display Power Management System (DPMS) interface. */
272 extern Bool monitor_powered_on_p (saver_info *si);
273 extern void monitor_power_on (saver_info *si);
276 /* =======================================================================
278 ======================================================================= */
280 extern void initialize_screensaver_window (saver_info *si);
281 extern void raise_window (saver_info *si,
282 Bool inhibit_fade, Bool between_hacks_p,
284 extern void blank_screen (saver_info *si);
285 extern void unblank_screen (saver_info *si);
286 extern void grab_keyboard_and_mouse (saver_info *si, Window, Cursor);
287 extern void ungrab_keyboard_and_mouse (saver_info *si);
289 /* =======================================================================
291 ======================================================================= */
294 extern Bool unlock_p (saver_info *si);
295 extern create_passwd_dialog (Widget, Visual *, Colormap);
296 extern Bool lock_init (int argc, char **argv);
297 extern Bool passwd_valid_p (const char *typed_passwd);
300 /* =======================================================================
302 ======================================================================= */
305 extern void demo_mode (saver_info *si);
306 extern void demo_mode_restart_process (saver_info *si);
307 extern create_demo_dialog (Widget, Visual *, Colormap);
308 extern create_resources_dialog (Widget, Visual *, Colormap);
311 #if !defined(NO_LOCKING) || !defined(NO_DEMO_MODE)
312 extern void pop_up_dialog_box (Widget dialog, Widget form, int where);
313 extern void format_into_label (Widget label, const char *arg);
314 extern void steal_focus_and_colormap (Widget dialog);
318 extern void disable_motif_drag_and_drop(Widget w);
322 /* =======================================================================
324 ======================================================================= */
326 extern void start_notice_events_timer (saver_info *, Window);
327 extern void cycle_timer (XtPointer si, XtIntervalId *id);
328 extern void activate_lock_timer (XtPointer si, XtIntervalId *id);
329 extern void reset_watchdog_timer (saver_info *si, Bool on_p);
330 extern void idle_timer (XtPointer si, XtIntervalId *id);
331 extern void sleep_until_idle (saver_info *si, Bool until_idle_p);
333 /* =======================================================================
335 ======================================================================= */
337 extern Bool handle_clientmessage (saver_info *, XEvent *, Bool);
339 /* =======================================================================
341 ======================================================================= */
343 extern void hack_environment (saver_info *si);
344 extern void init_sigchld (void);
345 extern void spawn_screenhack (saver_info *si, Bool first_time_p);
346 extern void kill_screenhack (saver_info *si);
347 extern void suspend_screenhack (saver_info *si, Bool suspend_p);
348 extern Bool screenhack_running_p (saver_info *si);
349 extern void emergency_kill_subproc (saver_info *si);
350 extern Bool select_visual (saver_screen_info *ssi, const char *visual_name);
351 extern const char *signal_name (int signal);
353 /* =======================================================================
355 ======================================================================= */
359 # define hack_uid_warn()
360 #else /* !NO_SETUID */
361 extern void hack_uid (saver_info *si);
362 extern void hack_uid_warn (saver_info *si);
363 #endif /* NO_SETUID */
365 /* =======================================================================
367 ======================================================================= */
369 extern FILE *real_stderr;
370 extern FILE *real_stdout;
371 extern void initialize_stderr (saver_info *si);
372 extern void reset_stderr (saver_screen_info *ssi);
373 extern void clear_stderr (saver_screen_info *ssi);
375 /* =======================================================================
377 ======================================================================= */
379 extern const char *blurb (void);
380 extern void save_argv (int argc, char **argv);
381 extern void saver_exit (saver_info *si, int status);
382 extern void restart_process (saver_info *si);
384 extern int saver_ehandler (Display *dpy, XErrorEvent *error);
385 extern int BadWindow_ehandler (Display *dpy, XErrorEvent *error);
386 extern Bool window_exists_p (Display *dpy, Window window);
387 extern char *timestring (void);
389 extern Atom XA_VROOT, XA_XSETROOT_ID;
390 extern Atom XA_SCREENSAVER, XA_SCREENSAVER_VERSION, XA_SCREENSAVER_ID;
391 extern Atom XA_SCREENSAVER_TIME;
393 #endif /* __XSCREENSAVER_H__ */