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tuxedo-touchpad-switch
mirror of https://github.com/tuxedocomputers/tuxedo-touchpad-switch
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Working prototype

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pull/3/head
Werner Sembach 4 years ago
parent 9f3333c623
commit 13caaaff8e
4 changed files with 227 additions and 0 deletions
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13
CMakeLists.txt
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@ -1,3 +1,16 @@
cmake_minimum_required(VERSION 3.6)
project(tuxedo-touchpad-switch)
find_package(PkgConfig REQUIRED)
add_executable(tuxedo-touchpad-switch tuxedo-touchpad-switch.cpp)
target_link_libraries(tuxedo-touchpad-switch udev)
pkg_check_modules(GIO2 REQUIRED IMPORTED_TARGET gio-2.0)
add_executable(gsettings-test gsettings-test.c)
target_link_libraries(gsettings-test PkgConfig::GIO2)
add_executable(tuxedo-touchpad-switch-deamon tuxedo-touchpad-switch-deamon.cpp)
target_link_libraries(tuxedo-touchpad-switch-deamon udev PkgConfig::GIO2)

34
gsettings-test.c
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#include <gio/gio.h>
#include <stdio.h>
void send_events_handler(GSettings *settings, char* key, gpointer user_data) {
const gchar *send_events_string = g_settings_get_string(settings, key);
if (!send_events_string) {
perror("g_settings_get_string");
}
printf("send_events_string: %s\n", send_events_string);
}
int main(int argc, char *argv[]) {
GSettings *settings_touchpad = g_settings_new("org.gnome.desktop.peripherals.touchpad");
if (!settings_touchpad) {
perror("g_settings_new");
return EXIT_FAILURE;
}
if (g_signal_connect(settings_touchpad, "changed::send-events", G_CALLBACK(send_events_handler), NULL) < 1) {
perror("g_signal_connect");
return EXIT_FAILURE;
}
GMainLoop *app = g_main_loop_new(NULL, TRUE);
if (!app) {
perror("g_main_loop_new");
return EXIT_FAILURE;
}
g_main_loop_run(app);
// g_main_loop_run should not return
perror("g_main_loop_run");
return EXIT_FAILURE;
}

179
tuxedo-touchpad-switch-deamon.cpp
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@ -0,0 +1,179 @@
#include <linux/hidraw.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <libudev.h>
#include <string.h>
#include <signal.h>
#include <vector>
#include <string>
#include <gio/gio.h>
const char *bus_str(int bus);
static int get_touchpad_hidraw_devices(std::vector<std::string> *devnodes) {
struct udev *udev_context = udev_new();
if (!udev_context) {
perror("udev_new");
return -1;
}
struct udev_enumerate *hidraw_devices = udev_enumerate_new(udev_context);
if (!hidraw_devices) {
perror("udev_enumerate_new");
udev_unref(udev_context);
return -1;
}
if (udev_enumerate_add_match_subsystem(hidraw_devices, "hidraw") < 0) {
perror("udev_enumerate_add_match_subsystem");
udev_enumerate_unref(hidraw_devices);
udev_unref(udev_context);
return -1;
}
if (udev_enumerate_scan_devices(hidraw_devices) < 0) {
perror("udev_enumerate_scan_devices");
udev_enumerate_unref(hidraw_devices);
udev_unref(udev_context);
return -1;
}
struct udev_list_entry *hidraw_devices_iterator = udev_enumerate_get_list_entry(hidraw_devices);
if (!hidraw_devices_iterator) {
udev_enumerate_unref(hidraw_devices);
udev_unref(udev_context);
return -1;
}
struct udev_list_entry *hidraw_device_entry;
udev_list_entry_foreach(hidraw_device_entry, hidraw_devices_iterator) {
if (strstr(udev_list_entry_get_name(hidraw_device_entry), "i2c-UNIW0001")) {
struct udev_device *hidraw_device = udev_device_new_from_syspath(udev_context, udev_list_entry_get_name(hidraw_device_entry));
if (!hidraw_device) {
perror("udev_device_new_from_syspath");
continue;
}
std::string devnode = udev_device_get_devnode(hidraw_device);
devnodes->push_back(devnode);
udev_device_unref(hidraw_device);
}
}
udev_enumerate_unref(hidraw_devices);
udev_unref(udev_context);
return devnodes->size();;
}
void send_events_handler(GSettings *settings, const char* key, gpointer user_data) {
const gchar *send_events_string = g_settings_get_string(settings, key);
if (!send_events_string) {
perror("g_settings_get_string");
return;
}
std::vector<std::string> devnodes;
int touchpad_count = get_touchpad_hidraw_devices(&devnodes);
if (touchpad_count < 0) {
perror("get_touchpad_hidraw_devices");
return;
}
if (touchpad_count == 0) {
printf("No compatible touchpads found.\n");
return;
}
for (auto it = devnodes.begin(); it != devnodes.end(); ++it) {
int hidraw = open((*it).c_str(), O_RDWR|O_NONBLOCK);
if (hidraw < 0) {
perror("open");
continue;
}
char buffer[2] = {0x07, 0x03};
if (send_events_string[0] == 'd') {
buffer[1] = 0x00;
}
int result = ioctl(hidraw, HIDIOCSFEATURE(sizeof(buffer)/sizeof(buffer[0])), buffer);
if (result < 0) {
perror("ioctl");
close(hidraw);
continue;
}
close(hidraw);
}
}
void gracefull_exit(int signum) {
GSettings *settings_touchpad = g_settings_new("org.gnome.desktop.peripherals.touchpad");
if (!settings_touchpad) {
perror("g_settings_new");
exit(EXIT_FAILURE);
}
std::vector<std::string> devnodes;
int touchpad_count = get_touchpad_hidraw_devices(&devnodes);
if (touchpad_count < 0) {
perror("get_touchpad_hidraw_devices");
exit(EXIT_FAILURE);
}
if (touchpad_count == 0) {
printf("No compatible touchpads found.\n");
exit(EXIT_SUCCESS);
}
for (auto it = devnodes.begin(); it != devnodes.end(); ++it) {
int hidraw = open((*it).c_str(), O_RDWR|O_NONBLOCK);
if (hidraw < 0) {
perror("open");
continue;
}
char buffer[2] = {0x07, 0x03};
int result = ioctl(hidraw, HIDIOCSFEATURE(sizeof(buffer)/sizeof(buffer[0])), buffer);
if (result < 0) {
perror("ioctl");
close(hidraw);
continue;
}
close(hidraw);
}
exit(EXIT_SUCCESS);
}
int main(int argc, char *argv[]) {
signal(SIGINT, gracefull_exit);
signal(SIGTERM, gracefull_exit);
GSettings *settings_touchpad = g_settings_new("org.gnome.desktop.peripherals.touchpad");
if (!settings_touchpad) {
perror("g_settings_new");
return EXIT_FAILURE;
}
// sync on start
send_events_handler(settings_touchpad, "send-events", NULL);
if (g_signal_connect(settings_touchpad, "changed::send-events", G_CALLBACK(send_events_handler), NULL) < 1) {
perror("g_signal_connect");
return EXIT_FAILURE;
}
GMainLoop *app = g_main_loop_new(NULL, TRUE);
if (!app) {
perror("g_main_loop_new");
return EXIT_FAILURE;
}
g_main_loop_run(app);
// g_main_loop_run should not return
perror("g_main_loop_run");
return EXIT_FAILURE;
}

1
tuxedo-touchpad-switch.cpp
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@ -76,6 +76,7 @@ int main(int argc, char *argv[]) {
std::vector<std::string> devnodes;
int touchpad_count = get_touchpad_hidraw_devices(&devnodes);
if (touchpad_count < 0) {
perror("get_touchpad_hidraw_devices");
return EXIT_FAILURE;
}
if (touchpad_count == 0) {

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