1 /* xscreensaver, Copyright (c) 1993-1998 Jamie Zawinski <jwz@jwz.org>
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 */
43 Bool xsync_p; /* whether XSynchronize has been called */
45 Bool lock_p; /* whether to lock as well as save */
46 Bool fade_p; /* whether to fade to black */
47 Bool unfade_p; /* whether to fade from black */
48 int fade_seconds; /* how long that should take */
49 int fade_ticks; /* how many ticks should be used */
51 Bool install_cmap_p; /* whether we should use our own colormap
52 when using the screen's default visual. */
54 char **screenhacks; /* the programs to run */
55 int screenhacks_count;
57 int nice_inferior; /* nice value for subprocs */
59 int initial_delay; /* how long to sleep after launch */
60 Time splash_duration; /* how long the splash screen stays up */
61 Time timeout; /* how much idle time before activation */
62 Time lock_timeout; /* how long after activation locking starts */
63 Time cycle; /* how long each hack should run */
65 Time passwd_timeout; /* how much time before pw dialog goes down */
67 Time pointer_timeout; /* how often to check mouse position */
68 Time notice_events_timeout; /* how long after window creation to select */
69 Time watchdog_timeout; /* how often to re-raise and re-blank screen */
71 Bool use_xidle_extension; /* which extension to use, if possible */
72 Bool use_mit_saver_extension;
73 Bool use_sgi_saver_extension;
75 char *shell; /* where to find /bin/sh */
77 char *help_url; /* Where the help document resides. */
78 char *load_url_command; /* How one loads URLs. */
82 /* This structure holds all the data that applies to the program as a whole,
83 or to the non-screen-specific parts of the display connection.
87 saver_preferences prefs;
90 saver_screen_info *screens;
91 saver_screen_info *default_screen; /* ...on which dialogs will appear. */
93 /* =======================================================================
94 global connection info
95 ======================================================================= */
101 /* =======================================================================
102 server extension info
103 ======================================================================= */
105 # ifdef HAVE_MIT_SAVER_EXTENSION
106 int mit_saver_ext_event_number;
107 int mit_saver_ext_error_number;
109 # ifdef HAVE_SGI_SAVER_EXTENSION
110 int sgi_saver_ext_event_number;
111 int sgi_saver_ext_error_number;
115 /* =======================================================================
117 ======================================================================= */
119 Bool screen_blanked_p; /* Whether the saver is currently active. */
120 Window mouse_grab_window; /* Window holding our mouse grab */
121 Window keyboard_grab_window; /* Window holding our keyboard grab */
124 /* =======================================================================
125 locking and runtime priveleges
126 ======================================================================= */
128 Bool locked_p; /* Whether the screen is currently locked. */
129 Bool dbox_up_p; /* Whether the demo-mode or passwd dialogs
130 are currently visible */
132 Bool locking_disabled_p; /* Sometimes locking is impossible. */
133 char *nolock_reason; /* This is why. */
135 char *orig_uid; /* What uid/gid we had at startup, before
136 discarding priveleges. */
137 char *uid_message; /* Any diagnostics from our attempt to
138 discard priveleges (printed only in
141 /* =======================================================================
143 ======================================================================= */
145 Bool demo_mode_p; /* Whether demo-mode is active */
146 char *demo_hack; /* The hack that has been selected from the
147 dialog box, which should be run next. */
150 /* =======================================================================
152 ======================================================================= */
154 Bool question_up_p; /* Whether the question dialog is currently
156 Widget question_dialog; /* The question dialog, if any. */
157 Widget splash_dialog; /* The splash screen window, if any. */
159 /* =======================================================================
161 ======================================================================= */
163 XtIntervalId lock_id; /* Timer to implement `prefs.lock_timeout' */
164 XtIntervalId cycle_id; /* Timer to implement `prefs.cycle' */
165 XtIntervalId timer_id; /* Timer to implement `prefs.timeout' */
166 XtIntervalId watchdog_id; /* Timer to implement `prefs.watchdog */
167 XtIntervalId check_pointer_timer_id; /* `prefs.pointer_timeout' */
169 time_t last_activity_time; /* Used only when no server exts. */
170 saver_screen_info *last_activity_screen;
173 /* =======================================================================
175 ======================================================================= */
177 int next_mode_p; /* Set to 1 if the NEXT ClientMessage has just
178 been received; set to 2 if PREV has just
179 been received. (#### This is nasty.) */
181 /* =======================================================================
183 ======================================================================= */
185 XtIntervalId stderr_popup_timer;
190 /* This structure holds all the data that applies to the screen-specific parts
191 of the display connection; if the display has multiple screens, there will
192 be one of these for each screen.
194 struct saver_screen_info {
198 Widget toplevel_shell;
200 /* =======================================================================
202 ======================================================================= */
204 Window screensaver_window; /* The window that will impersonate the root,
205 when the screensaver activates. Note that
206 the window stored here may change, as we
207 destroy and recreate it on different
209 Colormap cmap; /* The colormap that goes with the window. */
210 Bool install_cmap_p; /* whether we should use our own colormap.
211 This can be overridden on a per-hack basis.
213 Visual *current_visual; /* The visual of the window. */
214 Visual *default_visual; /* visual to use when none other specified */
215 int current_depth; /* How deep the visual (and the window) are. */
217 Window real_vroot; /* The original virtual-root window. */
218 Window real_vroot_value; /* What was in the __SWM_VROOT property. */
220 Cursor cursor; /* A blank cursor that goes with the
222 unsigned long black_pixel; /* Black, allocated from `cmap'. */
224 # ifdef HAVE_MIT_SAVER_EXTENSION
225 Window server_mit_saver_window;
229 /* =======================================================================
231 ======================================================================= */
233 Colormap demo_cmap; /* The colormap that goes with the dialogs:
234 this might be the same as `cmap' so care
235 must be taken not to free it while it's
238 /* =======================================================================
240 ======================================================================= */
242 int poll_mouse_last_root_x; /* Used only when no server exts. */
243 int poll_mouse_last_root_y;
244 Window poll_mouse_last_child;
245 unsigned int poll_mouse_last_mask;
248 /* =======================================================================
250 ======================================================================= */
252 int current_hack; /* Index into `prefs.screenhacks' */
257 int stderr_line_height;
258 XFontStruct *stderr_font;
260 Window stderr_overlay_window; /* Used if the server has overlay planes */
261 Colormap stderr_cmap;
267 /* =======================================================================
268 server extensions and virtual roots
269 ======================================================================= */
271 extern void restore_real_vroot (saver_info *si);
272 extern void disable_builtin_screensaver (saver_info *si, Bool turn_off_p);
273 extern Bool ensure_no_screensaver_running (Display *, Screen *);
275 #ifdef HAVE_MIT_SAVER_EXTENSION
276 extern Bool query_mit_saver_extension (saver_info *);
278 #ifdef HAVE_SGI_SAVER_EXTENSION
279 extern Bool query_sgi_saver_extension (saver_info *);
282 /* Display Power Management System (DPMS) interface. */
283 extern Bool monitor_powered_on_p (saver_info *si);
284 extern void monitor_power_on (saver_info *si);
287 /* =======================================================================
289 ======================================================================= */
291 extern void initialize_screensaver_window (saver_info *si);
292 extern void raise_window (saver_info *si,
293 Bool inhibit_fade, Bool between_hacks_p,
295 extern void blank_screen (saver_info *si);
296 extern void unblank_screen (saver_info *si);
297 extern void grab_keyboard_and_mouse (saver_info *si, Window, Cursor);
298 extern void ungrab_keyboard_and_mouse (saver_info *si);
300 /* =======================================================================
302 ======================================================================= */
305 extern Bool unlock_p (saver_info *si);
306 extern void create_passwd_dialog (Widget, Visual *, Colormap);
307 extern Bool lock_init (int argc, char **argv);
308 extern Bool passwd_valid_p (const char *typed_passwd);
311 /* =======================================================================
313 ======================================================================= */
315 extern void hack_uid (saver_info *si);
316 extern void describe_uids (saver_info *si, FILE *out);
318 /* =======================================================================
320 ======================================================================= */
323 extern void demo_mode (saver_info *si);
324 extern void demo_mode_restart_process (saver_info *si);
325 extern void create_demo_dialog (Widget, Visual *, Colormap);
326 extern void create_resources_dialog (Widget, Visual *, Colormap);
329 #if !defined(NO_LOCKING) || !defined(NO_DEMO_MODE)
330 extern void pop_up_dialog_box (Widget dialog, Widget form, int where);
331 extern void format_into_label (Widget label, const char *arg);
332 extern void steal_focus_and_colormap (Widget dialog);
335 extern void create_splash_dialog (Widget, Visual *, Colormap);
336 extern void pop_splash_dialog (saver_info *si);
337 extern void roger (Widget button, XtPointer client_data, XtPointer call_data);
340 /* =======================================================================
342 ======================================================================= */
344 extern void start_notice_events_timer (saver_info *, Window);
345 extern void cycle_timer (XtPointer si, XtIntervalId *id);
346 extern void activate_lock_timer (XtPointer si, XtIntervalId *id);
347 extern void reset_watchdog_timer (saver_info *si, Bool on_p);
348 extern void idle_timer (XtPointer si, XtIntervalId *id);
349 extern void sleep_until_idle (saver_info *si, Bool until_idle_p);
351 /* =======================================================================
353 ======================================================================= */
355 extern Bool handle_clientmessage (saver_info *, XEvent *, Bool);
357 /* =======================================================================
359 ======================================================================= */
361 extern void hack_environment (saver_info *si);
362 extern void init_sigchld (void);
363 extern void spawn_screenhack (saver_info *si, Bool first_time_p);
364 extern void kill_screenhack (saver_info *si);
365 extern void suspend_screenhack (saver_info *si, Bool suspend_p);
366 extern Bool screenhack_running_p (saver_info *si);
367 extern void emergency_kill_subproc (saver_info *si);
368 extern Bool select_visual (saver_screen_info *ssi, const char *visual_name);
369 extern const char *signal_name (int signal);
371 /* =======================================================================
373 ======================================================================= */
375 extern FILE *real_stderr;
376 extern FILE *real_stdout;
377 extern void initialize_stderr (saver_info *si);
378 extern void reset_stderr (saver_screen_info *ssi);
379 extern void clear_stderr (saver_screen_info *ssi);
381 /* =======================================================================
383 ======================================================================= */
385 extern const char *blurb (void);
386 extern void save_argv (int argc, char **argv);
387 extern void saver_exit (saver_info *si, int status, const char *core_reason);
388 extern void restart_process (saver_info *si);
390 extern int saver_ehandler (Display *dpy, XErrorEvent *error);
391 extern int BadWindow_ehandler (Display *dpy, XErrorEvent *error);
392 extern Bool window_exists_p (Display *dpy, Window window);
393 extern char *timestring (void);
395 extern Atom XA_VROOT, XA_XSETROOT_ID;
396 extern Atom XA_SCREENSAVER, XA_SCREENSAVER_VERSION, XA_SCREENSAVER_ID;
397 extern Atom XA_SCREENSAVER_TIME;
398 extern Atom XA_DEMO, XA_PREFS;
400 #endif /* __XSCREENSAVER_H__ */