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#include <csignal>
#include <cstring>
#include <iostream>
#include <unistd.h>
#include <wayland-client-protocol.h>
#include <wayland-client.h>
// You'll need to generate these headers from the protocol XML files:
// wayland-scanner client-header < idle-inhibit-unstable-v1.xml >
// idle-inhibit-client-protocol.h wayland-scanner private-code <
// idle-inhibit-unstable-v1.xml > idle-inhibit-protocol.c
extern "C" {
#include "idle-inhibitor.h"
}
class WaylandIdleInhibitor {
private:
struct wl_display *display;
struct wl_registry *registry;
struct wl_compositor *compositor;
struct wl_surface *surface;
struct zwp_idle_inhibit_manager_v1 *idle_inhibit_manager;
struct zwp_idle_inhibitor_v1 *idle_inhibitor;
static WaylandIdleInhibitor *instance;
// Registry listener to get global objects
static void registry_global(void *data, struct wl_registry *registry,
uint32_t id, const char *interface,
uint32_t version) {
WaylandIdleInhibitor *inhibitor = static_cast<WaylandIdleInhibitor *>(data);
if (strcmp(interface, wl_compositor_interface.name) == 0) {
inhibitor->compositor = static_cast<struct wl_compositor *>(
wl_registry_bind(registry, id, &wl_compositor_interface, 1));
} else if (strcmp(interface, zwp_idle_inhibit_manager_v1_interface.name) ==
0) {
inhibitor->idle_inhibit_manager =
static_cast<struct zwp_idle_inhibit_manager_v1 *>(wl_registry_bind(
registry, id, &zwp_idle_inhibit_manager_v1_interface, 1));
}
}
static void registry_global_remove(void *data, struct wl_registry *registry,
uint32_t id) {}
static const struct wl_registry_listener registry_listener;
public:
WaylandIdleInhibitor()
: display(nullptr), registry(nullptr), compositor(nullptr),
surface(nullptr), idle_inhibit_manager(nullptr),
idle_inhibitor(nullptr) {
instance = this;
}
~WaylandIdleInhibitor() { cleanup(); }
bool initialize() {
display = wl_display_connect(nullptr);
if (!display) {
return false;
}
registry = wl_display_get_registry(display);
if (!registry) {
return false;
}
wl_registry_add_listener(registry, ®istry_listener, this);
// Roundtrip to get all globals
wl_display_roundtrip(display);
if (!compositor || !idle_inhibit_manager) {
return false;
}
return true;
}
bool createInvisibleSurface() {
surface = wl_compositor_create_surface(compositor);
if (!surface) {
return false;
}
return true;
}
bool inhibitIdle() {
if (!surface || !idle_inhibit_manager) {
return false;
}
idle_inhibitor = zwp_idle_inhibit_manager_v1_create_inhibitor(
idle_inhibit_manager, surface);
if (!idle_inhibitor) {
std::cerr << "Failed to create idle inhibitor\n";
return false;
}
wl_display_roundtrip(display);
std::cout << "Idle inhibition activated\n";
return true;
}
void cleanup() {
if (idle_inhibitor) {
zwp_idle_inhibitor_v1_destroy(idle_inhibitor);
idle_inhibitor = nullptr;
}
if (surface) {
wl_surface_destroy(surface);
surface = nullptr;
}
if (idle_inhibit_manager) {
zwp_idle_inhibit_manager_v1_destroy(idle_inhibit_manager);
idle_inhibit_manager = nullptr;
}
if (compositor) {
wl_compositor_destroy(compositor);
compositor = nullptr;
}
if (registry) {
wl_registry_destroy(registry);
registry = nullptr;
}
if (display) {
wl_display_disconnect(display);
display = nullptr;
}
}
void run() {
while (wl_display_dispatch(display) != -1)
;
}
static WaylandIdleInhibitor *getInstance() { return instance; }
};
WaylandIdleInhibitor *WaylandIdleInhibitor::instance = nullptr;
const struct wl_registry_listener WaylandIdleInhibitor::registry_listener = {
WaylandIdleInhibitor::registry_global,
WaylandIdleInhibitor::registry_global_remove};
void signalHandler(int signal) {
WaylandIdleInhibitor *inhibitor = WaylandIdleInhibitor::getInstance();
if (inhibitor) {
inhibitor->cleanup();
}
exit(0);
}
int main() {
signal(SIGINT, signalHandler);
signal(SIGTERM, signalHandler);
signal(SIGHUP, signalHandler);
WaylandIdleInhibitor inhibitor;
if (!(inhibitor.initialize() && inhibitor.createInvisibleSurface() &&
inhibitor.inhibitIdle())) {
std::cerr << "Cannot inhibit idle!" << std::endl;
return 1;
}
inhibitor.run();
return 0;
}
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