Reenable touchpad on exit

pull/3/head
Werner Sembach 4 years ago
parent f96e450101
commit 085b4d9bb6

@ -19,6 +19,7 @@
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <signal.h>
#include <libudev.h>
@ -33,7 +34,7 @@ using std::cerr;
using std::endl;
static int get_touchpad_hidraw_devices(std::vector<std::string> *devnodes) {
int result = -1;
int result = -EXIT_FAILURE;
struct udev *udev_context = udev_new();
if (!udev_context) {
@ -85,36 +86,30 @@ static int get_touchpad_hidraw_devices(std::vector<std::string> *devnodes) {
return result;
}
void send_events_handler(GSettings *settings, const char* key, __attribute__((unused)) gpointer user_data) {
const gchar *send_events_string = g_settings_get_string(settings, key);
if (!send_events_string) {
cerr << "send_events_handler(...): g_settings_get_string(...) failed." << endl;
return;
}
int set_touchpad_state(int enabled) {
std::vector<std::string> devnodes;
int touchpad_count = get_touchpad_hidraw_devices(&devnodes);
if (touchpad_count < 0) {
cerr << "send_events_handler(...): get_touchpad_hidraw_devices(...) failed." << endl;
return;
return EXIT_FAILURE;
}
if (touchpad_count == 0) {
cout << "No compatible touchpads found." << endl;
return;
return EXIT_FAILURE;
}
for (auto it = devnodes.begin(); it != devnodes.end(); ++it) {
int hidraw = open((*it).c_str(), O_WRONLY|O_NONBLOCK);
if (hidraw < 0) {
cerr << "send_events_handler(...): open(\"" << *it << "\", O_RDWR|O_NONBLOCK) failed." << endl;
cerr << "send_events_handler(...): open(\"" << *it << "\", O_WRONLY|O_NONBLOCK) failed." << endl;
continue;
}
// default is to enable touchpad, for this send "0x03" as feature report nr.7 (0x07) to the touchpad hid device
char buffer[2] = {0x07, 0x03};
char buffer[2] = {0x07, 0x00};
// change 0x03 to 0x00 to disable touchpad when configuration string starts with [d]isable
if (send_events_string[0] == 'd') {
buffer[1] = 0x00;
if (enabled) {
buffer[1] = 0x03;
}
int result = ioctl(hidraw, HIDIOCSFEATURE(sizeof(buffer)/sizeof(buffer[0])), buffer);
if (result < 0) {
@ -125,11 +120,36 @@ void send_events_handler(GSettings *settings, const char* key, __attribute__((un
close(hidraw);
}
return EXIT_SUCCESS;
}
void gracefull_exit(int signum) {
exit(set_touchpad_state(1));
}
void send_events_handler(GSettings *settings, const char* key, __attribute__((unused)) gpointer user_data) {
const gchar *send_events_string = g_settings_get_string(settings, key);
if (!send_events_string) {
cerr << "send_events_handler(...): g_settings_get_string(...) failed." << endl;
return;
}
int enabled = 0;
if (send_events_string[0] == 'e') {
enabled = 1;
}
if (set_touchpad_state(enabled)) {
cerr << "send_events_handler(...): set_touchpad_state(...) failed." << endl;
}
}
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.
signal(SIGINT, gracefull_exit);
signal(SIGTERM, gracefull_exit);
// 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");

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