1 /* xscreensaver, Copyright (c) 1993-2006 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__
24 # include <signal.h> /* for sigset_t */
29 extern char *progname;
30 extern char *progclass;
33 #define countof(x) (sizeof((x))/sizeof((*x)))
37 /* =======================================================================
38 server extensions and virtual roots
39 ======================================================================= */
41 extern Bool restore_real_vroot (saver_info *si);
42 extern void disable_builtin_screensaver (saver_info *, Bool unblank_screen_p);
43 extern Bool ensure_no_screensaver_running (Display *, Screen *);
45 #ifdef HAVE_MIT_SAVER_EXTENSION
46 extern Bool query_mit_saver_extension (saver_info *);
48 #ifdef HAVE_SGI_SAVER_EXTENSION
49 extern Bool query_sgi_saver_extension (saver_info *);
51 #ifdef HAVE_XIDLE_EXTENSION
52 extern Bool query_xidle_extension (saver_info *);
55 extern Bool query_randr_extension (saver_info *);
57 #ifdef HAVE_PROC_INTERRUPTS
58 extern Bool query_proc_interrupts_available (saver_info *, const char **why);
61 /* Display Power Management System (DPMS) interface. */
62 extern Bool monitor_powered_on_p (saver_info *si);
63 extern void monitor_power_on (saver_info *si);
66 /* =======================================================================
68 ======================================================================= */
70 extern void initialize_screensaver_window (saver_info *si);
71 extern void raise_window (saver_info *si,
72 Bool inhibit_fade, Bool between_hacks_p,
74 extern Bool blank_screen (saver_info *si);
75 extern void unblank_screen (saver_info *si);
76 extern void resize_screensaver_window (saver_info *si);
78 extern void get_screen_viewport (saver_screen_info *ssi,
79 int *x_ret, int *y_ret,
80 int *w_ret, int *h_ret,
81 int target_x, int target_y,
85 /* =======================================================================
87 ======================================================================= */
90 extern Bool unlock_p (saver_info *si);
91 extern Bool lock_priv_init (int argc, char **argv, Bool verbose_p);
92 extern Bool lock_init (int argc, char **argv, Bool verbose_p);
93 extern Bool passwd_valid_p (const char *typed_passwd, Bool verbose_p);
94 #endif /* NO_LOCKING */
96 extern void set_locked_p (saver_info *si, Bool locked_p);
97 extern int move_mouse_grab (saver_info *si, Window to, Cursor cursor,
99 extern int mouse_screen (saver_info *si);
102 /* =======================================================================
104 ======================================================================= */
106 extern void hack_uid (saver_info *si);
107 extern void describe_uids (saver_info *si, FILE *out);
109 /* =======================================================================
111 ======================================================================= */
113 extern void draw_shaded_rectangle (Display *dpy, Window window,
115 int width, int height,
117 unsigned long top_color,
118 unsigned long bottom_color);
119 extern int string_width (XFontStruct *font, char *s);
121 extern void make_splash_dialog (saver_info *si);
122 extern void handle_splash_event (saver_info *si, XEvent *e);
125 /* =======================================================================
127 ======================================================================= */
129 extern void start_notice_events_timer (saver_info *, Window, Bool verbose_p);
130 extern void cycle_timer (XtPointer si, XtIntervalId *id);
131 extern void activate_lock_timer (XtPointer si, XtIntervalId *id);
132 extern void reset_watchdog_timer (saver_info *si, Bool on_p);
133 extern void idle_timer (XtPointer si, XtIntervalId *id);
134 extern void de_race_timer (XtPointer si, XtIntervalId *id);
135 extern void sleep_until_idle (saver_info *si, Bool until_idle_p);
136 extern void reset_timers (saver_info *si);
137 extern void schedule_wakeup_event (saver_info *si, Time when, Bool verbose_p);
140 /* =======================================================================
142 ======================================================================= */
144 extern Bool handle_clientmessage (saver_info *, XEvent *, Bool);
145 extern void maybe_reload_init_file (saver_info *);
147 /* =======================================================================
149 ======================================================================= */
151 extern void handle_signals (saver_info *si);
152 #ifdef HAVE_SIGACTION
153 extern sigset_t block_sigchld (void);
154 #else /* !HAVE_SIGACTION */
155 extern int block_sigchld (void);
156 #endif /* !HAVE_SIGACTION */
157 extern void unblock_sigchld (void);
158 extern void hack_environment (saver_info *si);
159 extern void hack_subproc_environment (saver_screen_info *ssi);
160 extern void init_sigchld (void);
161 extern void spawn_screenhack (saver_info *si, Bool first_time_p);
162 extern pid_t fork_and_exec (saver_screen_info *ssi, const char *command);
163 extern void kill_screenhack (saver_info *si);
164 extern void suspend_screenhack (saver_info *si, Bool suspend_p);
165 extern Bool screenhack_running_p (saver_info *si);
166 extern void emergency_kill_subproc (saver_info *si);
167 extern Bool select_visual (saver_screen_info *ssi, const char *visual_name);
168 extern void store_saver_status (saver_info *si);
169 extern const char *signal_name (int signal);
171 /* =======================================================================
173 ======================================================================= */
175 extern FILE *real_stderr;
176 extern FILE *real_stdout;
177 extern void initialize_stderr (saver_info *si);
178 extern void reset_stderr (saver_screen_info *ssi);
179 extern void clear_stderr (saver_screen_info *ssi);
180 extern void shutdown_stderr (saver_info *si);
183 /* =======================================================================
185 ======================================================================= */
187 extern const char *blurb (void);
188 extern void save_argv (int argc, char **argv);
189 extern void saver_exit (saver_info *si, int status, const char *core_reason);
190 extern void restart_process (saver_info *si);
192 extern int saver_ehandler (Display *dpy, XErrorEvent *error);
193 extern int BadWindow_ehandler (Display *dpy, XErrorEvent *error);
194 extern Bool window_exists_p (Display *dpy, Window window);
195 extern char *timestring (void);
196 extern Bool display_is_on_console_p (saver_info *si);
197 extern Visual *get_best_gl_visual (saver_screen_info *ssi);
198 extern void check_for_leaks (const char *where);
200 extern Atom XA_VROOT, XA_XSETROOT_ID, XA_ESETROOT_PMAP_ID, XA_XROOTPMAP_ID;
201 extern Atom XA_SCREENSAVER, XA_SCREENSAVER_VERSION, XA_SCREENSAVER_ID;
202 extern Atom XA_SCREENSAVER_STATUS, XA_LOCK, XA_BLANK;
203 extern Atom XA_DEMO, XA_PREFS;
205 #endif /* __XSCREENSAVER_H__ */