Unlock touchpad when switching away from supported xsession

pull/3/head
Werner Sembach 4 years ago
parent c2ae648d86
commit 077495424a

@ -10,9 +10,9 @@ target_link_libraries(tuxedo-touchpad-switch udev PkgConfig::deps)
install(TARGETS tuxedo-touchpad-switch DESTINATION bin/)
install(FILES res/99-tuxedo-touchpad-switch.rules DESTINATION lib/udev/rules.d/)
install(FILES res/tuxedo-touchpad-switch.desktop DESTINATION /etc/xdg/autostart/) # absolute path on purpose for this file only:
# $XDG_CONFIG_DIRS dos not include a folder under /usr/ by default
# https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html#variables
install(FILES res/tuxedo-touchpad-switch-lockfile DESTINATION /etc/ PERMISSIONS OWNER_READ GROUP_READ WORLD_READ) # absolute path on purpose: implemented as such in tuxedo-touchpad-switch.cpp
install(FILES res/tuxedo-touchpad-switch.desktop DESTINATION /usr/share/gdm/greeter/autostart/) # absolute path on purpose: gdm has no config dir in /usr/local/
install(FILES res/tuxedo-touchpad-switch.desktop DESTINATION /etc/xdg/autostart/) # absolute path on purpose: $XDG_CONFIG_DIRS dos not include a folder under /usr/ by default https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html#variables
SET(CPACK_GENERATOR DEB RPM)
SET(CPACK_PACKAGE_CONTACT "Werner Sembach <tux@tuxedocomputers.com>")

@ -19,6 +19,7 @@
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <signal.h>
#include <libudev.h>
@ -33,6 +34,8 @@ using std::cout;
using std::cerr;
using std::endl;
int lockfile;
static int get_touchpad_hidraw_devices(std::vector<std::string> *devnodes) {
int result = -EXIT_FAILURE;
@ -125,7 +128,12 @@ int set_touchpad_state(int enabled) {
}
void gracefull_exit(int signum) {
exit(set_touchpad_state(1));
int result = set_touchpad_state(1);
if (flock(lockfile, LOCK_UN)) {
cerr << "main(...): flock(...) failed." << endl;
}
close(lockfile);
exit(result);
}
void send_events_handler(GSettings *settings, const char* key, __attribute__((unused)) gpointer user_data) {
@ -153,8 +161,19 @@ void properties_changed_handler(__attribute__((unused)) GDBusProxy *proxy, GVar
g_variant_dict_init (&changed_properties_dict, changed_properties);
if (g_variant_dict_lookup (&changed_properties_dict, "SessionIsActive", "b", &sessionIsActive)) {
if (sessionIsActive) {
if (flock(lockfile, LOCK_EX)) {
cerr << "main(...): flock(...) failed." << endl;
}
send_events_handler((GSettings *)user_data, "send-events", NULL);
}
else {
if (set_touchpad_state(1)) {
cerr << "properties_changed_handler(...): set_touchpad_state(...) failed." << endl;
}
if (flock(lockfile, LOCK_UN)) {
cerr << "main(...): flock(...) failed." << endl;
}
}
}
}
}
@ -162,13 +181,26 @@ void properties_changed_handler(__attribute__((unused)) GDBusProxy *proxy, GVar
int main() {
// Currently this programm works on desktop environments using Gnome settings only (Gnome/Budgie/Cinnamon/etc.).
// A KDE configuration version will be developt once this works flawless.
lockfile = open("/etc/tuxedo-touchpad-switch-lockfile", O_RDONLY);
if (lockfile < 0) {
cerr << "main(...): open(...) failed." << endl;
return EXIT_FAILURE;
}
signal(SIGINT, gracefull_exit);
signal(SIGTERM, gracefull_exit);
if (flock(lockfile, LOCK_EX)) {
cerr << "main(...): flock(...) failed." << endl;
close(lockfile);
return EXIT_FAILURE;
}
// get a new glib settings context to read the touchpad configuration of the current user
GSettings *touchpad_settings = g_settings_new("org.gnome.desktop.peripherals.touchpad");
if (!touchpad_settings) {
cerr << "main(...): g_settings_new(...) failed." << endl;
close(lockfile);
return EXIT_FAILURE;
}
@ -176,6 +208,7 @@ int main() {
// sync on config change
if (g_signal_connect(touchpad_settings, "changed::send-events", G_CALLBACK(send_events_handler), NULL) < 1) {
cerr << "main(...): g_signal_connect(...) failed." << endl;
close(lockfile);
return EXIT_FAILURE;
}
@ -188,11 +221,13 @@ int main() {
GDBusProxy *session_manager_properties = g_dbus_proxy_new_for_bus_sync(G_BUS_TYPE_SESSION, G_DBUS_PROXY_FLAGS_NONE, NULL, "org.gnome.SessionManager", "/org/gnome/SessionManager", "org.gnome.SessionManager", NULL, NULL);
if (session_manager_properties == NULL) {
cerr << "main(...): g_dbus_proxy_new_for_bus_sync(...) failed." << endl;
close(lockfile);
return EXIT_FAILURE;
}
if (g_signal_connect(session_manager_properties, "g-properties-changed", G_CALLBACK(properties_changed_handler), touchpad_settings) < 1) {
cerr << "main(...): g_signal_connect(...) failed." << endl;
close(lockfile);
g_object_unref(session_manager_properties);
return EXIT_FAILURE;
}
@ -202,6 +237,7 @@ int main() {
GMainLoop *app = g_main_loop_new(NULL, TRUE);
if (!app) {
cerr << "main(...): g_main_loop_new(...) failed." << endl;
close(lockfile);
g_object_unref(session_manager_properties);
return EXIT_FAILURE;
}
@ -209,6 +245,7 @@ int main() {
g_main_loop_run(app);
// g_main_loop_run should not return
cerr << "main(...): g_main_loop_run(...) failed." << endl;
close(lockfile);
g_object_unref(session_manager_properties);
return EXIT_FAILURE;
}

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