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-rw-r--r--src/main.c447
1 files changed, 274 insertions, 173 deletions
diff --git a/src/main.c b/src/main.c
index 74a4144..2503773 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,6 +1,7 @@
/* main.c
Copyright (C) 1999-2003 Tom Gilbert.
+Copyright (C) 2010-2023 Birte Kristina Friesel.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to
@@ -29,194 +30,294 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#include "timers.h"
#include "options.h"
#include "events.h"
-#include "support.h"
+#include "signals.h"
+#include "wallpaper.h"
+#include <termios.h>
+
+#ifdef HAVE_INOTIFY
+#include <sys/inotify.h>
+#endif
char **cmdargv = NULL;
int cmdargc = 0;
-int call_level = 0;
char *mode = NULL;
-int
-main(int argc, char **argv)
+int main(int argc, char **argv)
{
- D_ENTER(4);
- atexit(feh_clean_exit);
-
- init_parse_options(argc, argv);
-
- init_imlib_fonts();
-
- if (opt.display)
- init_x_and_imlib();
-
- feh_event_init();
-
- if (opt.index)
- init_index_mode();
- else if (opt.collage)
- init_collage_mode();
- else if (opt.multiwindow)
- init_multiwindow_mode();
- else if (opt.list || opt.customlist)
- init_list_mode();
- else if (opt.loadables)
- init_loadables_mode();
- else if (opt.unloadables)
- init_unloadables_mode();
- else if (opt.thumbs)
- init_thumbnail_mode();
- else if(opt.bgmode)
- {
- feh_wm_set_bg_file(opt.output_file, opt.bgmode);
- exit(0);
- }
-/* else if (opt.fmmode)
- {
- fmmode();
- opt.slideshow = 1;
- init_slideshow_mode();
- }
- */
- else
- {
- /* Slideshow mode is the default. Because it's spiffy */
- opt.slideshow = 1;
- init_slideshow_mode();
- }
-
- /* main event loop */
- while (feh_main_iteration(1));
-
- D_RETURN(4,0);
+ atexit(feh_clean_exit);
+
+ srandom(getpid() * time(NULL) % ((unsigned int) -1));
+
+ setup_signal_handlers();
+
+#ifdef HAVE_LIBMAGIC
+ init_magic();
+#endif
+
+ init_parse_options(argc, argv);
+
+ init_imlib_fonts();
+
+ if (opt.display) {
+ init_x_and_imlib();
+ init_keyevents();
+ init_buttonbindings();
+#ifdef HAVE_INOTIFY
+ if (opt.auto_reload) {
+ opt.inotify_fd = inotify_init();
+ if (opt.inotify_fd < 0) {
+ opt.auto_reload = 0;
+ weprintf("inotify_init failed:");
+ weprintf("Disabling inotify-based auto-reload");
+ }
+ }
+#endif
+ }
+
+ feh_event_init();
+
+ if (opt.index)
+ init_index_mode();
+ else if (opt.multiwindow)
+ init_multiwindow_mode();
+ else if (opt.list || opt.customlist)
+ init_list_mode();
+ else if (opt.loadables)
+ init_loadables_mode();
+ else if (opt.unloadables)
+ init_unloadables_mode();
+ else if (opt.thumbs)
+ init_thumbnail_mode();
+ else if (opt.bgmode) {
+ feh_wm_set_bg_filelist(opt.bgmode);
+ exit(0);
+ }
+ else if (opt.display){
+ /* Slideshow mode is the default. Because it's spiffy */
+ opt.slideshow = 1;
+ init_slideshow_mode();
+ }
+ else {
+ eprintf("Invalid option combination");
+ }
+
+ /* main event loop */
+ while (feh_main_iteration(1));
+
+ return(sig_exit);
}
+static void feh_process_signal(void)
+{
+ winwidget winwid = winwidget_get_first_window_of_type(WIN_TYPE_SLIDESHOW);
+ int i;
+ int signo = sig_received;
+ sig_received = 0;
+
+ if (winwid) {
+ if (filelist_len > 1) {
+ if (signo == SIGUSR1)
+ slideshow_change_image(winwid, SLIDE_NEXT, 1);
+ else if (signo == SIGUSR2)
+ slideshow_change_image(winwid, SLIDE_PREV, 1);
+ } else {
+ feh_reload_image(winwid, 0, 0);
+ }
+ } else if (opt.multiwindow) {
+ for (i = window_num - 1; i >= 0; i--)
+ feh_reload_image(windows[i], 0, 0);
+ }
+}
/* Return 0 to stop iterating, 1 if ok to continue. */
-int
-feh_main_iteration(int block)
+int feh_main_iteration(int block)
{
- static int first = 1;
- static int xfd = 0;
- static int fdsize = 0;
- static double pt = 0.0;
- XEvent ev;
- struct timeval tval;
- fd_set fdset;
- int count = 0;
- double t1 = 0.0, t2 = 0.0;
- fehtimer ft;
-
- D_ENTER(5);
-
- if (window_num == 0)
- D_RETURN(5,0);
-
- if (first)
- {
- /* Only need to set these up the first time */
- xfd = ConnectionNumber(disp);
- fdsize = xfd + 1;
- pt = feh_get_time();
- first = 0;
- }
-
- /* Timers */
- t1 = feh_get_time();
- t2 = t1 - pt;
- pt = t1;
- while (XPending(disp))
- {
- XNextEvent(disp, &ev);
- if (ev_handler[ev.type])
- (*(ev_handler[ev.type])) (&ev);
-
- if (window_num == 0)
- D_RETURN(5,0);
- }
- XFlush(disp);
-
- feh_redraw_menus();
-
- FD_ZERO(&fdset);
- FD_SET(xfd, &fdset);
-
- /* Timers */
- ft = first_timer;
- /* Don't do timers if we're zooming/panning/etc or if we are paused*/
- if (ft && (opt.mode == MODE_NORMAL) && !opt.paused)
- {
- D(5,("There are timers in the queue\n"));
- if (ft->just_added)
- {
- D(5,("The first timer has just been added\n"));
- D(5,("ft->in = %f\n", ft->in));
- ft->just_added = 0;
- t1 = ft->in;
- }
- else
- {
- D(5,("The first timer was not just added\n"));
- t1 = ft->in - t2;
- if (t1 < 0.0)
- t1 = 0.0;
- ft->in = t1;
- }
-
- XSync(disp, False);
- D(5,("I next need to action a timer in %f seconds\n", t1));
- /* Only do a blocking select if there's a timer due, or no events
- waiting */
- if (t1 == 0.0 || (block && !XPending(disp)))
- {
- tval.tv_sec = (long) t1;
- tval.tv_usec = (long) ((t1 - ((double) tval.tv_sec)) * 1000000);
- if (tval.tv_sec < 0)
- tval.tv_sec = 0;
- if (tval.tv_usec <= 1000)
- tval.tv_usec = 1000;
- errno = 0;
- D(5,("Performing blocking select - waiting for timer or event\n"));
- count = select(fdsize, &fdset, NULL, NULL, &tval);
- if ((count < 0)
- && ((errno == ENOMEM) || (errno == EINVAL) || (errno == EBADF)))
- eprintf("Connection to X display lost");
- if ((ft) && (count == 0))
- {
- /* This means the timer is due to be executed. If count was > 0,
- that would mean an X event had woken us, we're not interested
- in that */
- feh_handle_timer();
- }
- }
- }
- else
- {
- /* Don't block if there are events in the queue. That's a bit rude ;-) */
- if (block && !XPending(disp))
- {
- errno = 0;
- D(5,("Performing blocking select - no timers, or zooming\n"));
- count = select(fdsize, &fdset, NULL, NULL, NULL);
- if ((count < 0)
- && ((errno == ENOMEM) || (errno == EINVAL) || (errno == EBADF)))
- eprintf("Connection to X display lost");
- }
- }
- if (window_num == 0)
- D_RETURN(5,0);
- D_RETURN(5,1);
-}
+ static int first = 1;
+ static int xfd = 0;
+ static int fdsize = 0;
+ static double pt = 0.0;
+ XEvent ev;
+ struct timeval tval;
+ fd_set fdset;
+ int count = 0;
+ double t1 = 0.0, t2 = 0.0;
+ fehtimer ft;
+
+ if (window_num == 0 || sig_exit != 0)
+ return(0);
+ if (sig_received) {
+ feh_process_signal();
+ }
-void
-feh_clean_exit(void)
+ if (first) {
+ /* Only need to set these up the first time */
+ xfd = ConnectionNumber(disp);
+ fdsize = xfd + 1;
+ pt = feh_get_time();
+ first = 0;
+ /*
+ * Only accept commands from stdin if
+ * - stdin is a terminal (otherwise it's probably used as an image / filelist)
+ * - we aren't running in multiwindow mode (cause it's not clear which
+ * window commands should be applied to in that case)
+ * - we're in the same process group as stdin, AKA we're not running
+ * in the background. Background processes are stopped with SIGTTOU
+ * if they try to write to stdout or change terminal attributes. They
+ * also don't get input from stdin anyway.
+ */
+ if (isatty(STDIN_FILENO) && !opt.multiwindow && getpgrp() == (tcgetpgrp(STDIN_FILENO))) {
+ setup_stdin();
+ }
+ }
+
+ /* Timers */
+ t1 = feh_get_time();
+ t2 = t1 - pt;
+ pt = t1;
+ while (XPending(disp)) {
+ XNextEvent(disp, &ev);
+ if (ev_handler[ev.type])
+ (*(ev_handler[ev.type])) (&ev);
+
+ if (window_num == 0 || sig_exit != 0)
+ return(0);
+
+ if (sig_received) {
+ feh_process_signal();
+ }
+ }
+ XFlush(disp);
+
+ feh_redraw_menus();
+
+ FD_ZERO(&fdset);
+ FD_SET(xfd, &fdset);
+ if (control_via_stdin) {
+ FD_SET(STDIN_FILENO, &fdset);
+ }
+#ifdef HAVE_INOTIFY
+ if (opt.auto_reload) {
+ FD_SET(opt.inotify_fd, &fdset);
+ if (opt.inotify_fd >= fdsize)
+ fdsize = opt.inotify_fd + 1;
+ }
+#endif
+
+ /* Timers */
+ ft = first_timer;
+ /* Don't do timers if we're zooming/panning/etc or if we are paused */
+ if (ft && (opt.mode == MODE_NORMAL) && !opt.paused) {
+ D(("There are timers in the queue\n"));
+ if (ft->just_added) {
+ D(("The first timer has just been added\n"));
+ D(("ft->in = %f\n", ft->in));
+ ft->just_added = 0;
+ t1 = ft->in;
+ } else {
+ D(("The first timer was not just added\n"));
+ t1 = ft->in - t2;
+ if (t1 < 0.0)
+ t1 = 0.0;
+ ft->in = t1;
+ }
+
+ XSync(disp, False);
+ D(("I next need to action a timer in %f seconds\n", t1));
+ /* Only do a blocking select if there's a timer due, or no events
+ waiting */
+ if (t1 == 0.0 || (block && !XPending(disp))) {
+ tval.tv_sec = (long) t1;
+ tval.tv_usec = (long) ((t1 - ((double) tval.tv_sec)) * 1000000);
+ if (tval.tv_sec < 0)
+ tval.tv_sec = 0;
+ if (tval.tv_usec <= 1000)
+ tval.tv_usec = 1000;
+ errno = 0;
+ D(("Performing blocking select - waiting for timer or event\n"));
+ count = select(fdsize, &fdset, NULL, NULL, &tval);
+ if ((count < 0)
+ && ((errno == ENOMEM) || (errno == EINVAL)
+ || (errno == EBADF)))
+ eprintf("Connection to X display lost");
+ if (count == 0) {
+ /* This means the timer is due to be executed. If count was > 0,
+ that would mean an X event had woken us, we're not interested
+ in that */
+ feh_handle_timer();
+ }
+ /*
+ * Beware: If stdin is not connected, we may end up with xfd == 0.
+ * However, STDIN_FILENO == 0 holds as well in most cases. So we must
+ * check control_via_stdin to avoid mistaking an X11 event for stdin.
+ */
+ else if ((count > 0) && control_via_stdin && (FD_ISSET(STDIN_FILENO, &fdset)))
+ feh_event_handle_stdin();
+#ifdef HAVE_INOTIFY
+ else if ((count > 0) && (FD_ISSET(opt.inotify_fd, &fdset)))
+ feh_event_handle_inotify();
+#endif
+ }
+ } else {
+ /* Don't block if there are events in the queue. That's a bit rude ;-) */
+ if (block && !XPending(disp)) {
+ errno = 0;
+ D(("Performing blocking select - no timers, or zooming\n"));
+ count = select(fdsize, &fdset, NULL, NULL, NULL);
+ if ((count < 0)
+ && ((errno == ENOMEM) || (errno == EINVAL)
+ || (errno == EBADF)))
+ eprintf("Connection to X display lost");
+ else if ((count > 0) && control_via_stdin && (FD_ISSET(STDIN_FILENO, &fdset)))
+ feh_event_handle_stdin();
+#ifdef HAVE_INOTIFY
+ else if ((count > 0) && (FD_ISSET(opt.inotify_fd, &fdset)))
+ feh_event_handle_inotify();
+#endif
+ }
+ }
+ if (window_num == 0 || sig_exit != 0)
+ return(0);
+
+ if (sig_received) {
+ feh_process_signal();
+ }
+
+ return(1);
+}
+
+void feh_clean_exit(void)
{
- D_ENTER(4);
+ delete_rm_files();
+
+ free(opt.menu_font);
+
+#ifdef HAVE_INOTIFY
+ if (opt.auto_reload)
+ if (close(opt.inotify_fd))
+ eprintf("inotify close failed");
+#endif
+
+ if(disp)
+ XCloseDisplay(disp);
+
+#ifdef HAVE_LIBMAGIC
+ uninit_magic();
+#endif
- delete_rm_files();
+ /*
+ * Only restore the old terminal settings if
+ * - we changed them in the first place
+ * - stdin still is a terminal (it might have been closed)
+ * - stdin still belongs to us (we might have been detached from the
+ * controlling terminal, in that case we probably shouldn't be messing
+ * around with it) <https://github.com/derf/feh/issues/324>
+ */
+ if (control_via_stdin && isatty(STDIN_FILENO) && getpgrp() == (tcgetpgrp(STDIN_FILENO)))
+ restore_stdin();
- if (opt.filelistfile)
- feh_write_filelist(filelist, opt.filelistfile);
+ if (opt.filelistfile)
+ feh_write_filelist(filelist, opt.filelistfile);
- D_RETURN_(4);
+ return;
}
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