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/* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup GHOST
*/
#include "GHOST_TaskbarX11.h"
#include <cassert>
#include <cstdio>
#include <cstdlib>
#include <dlfcn.h>
using unity_get_entry_t = void *(*)(const char *);
using unity_set_progress_t = void (*)(void *, double);
using unity_set_progress_visible_t = void (*)(void *, int);
using unity_event_loop_t = int (*)(void *, int);
static unity_get_entry_t unity_get_entry;
static unity_set_progress_t unity_set_progress;
static unity_set_progress_visible_t unity_set_progress_visible;
static unity_event_loop_t unity_event_loop;
static bool libunity_initialized = false;
static bool libunity_available = false;
static void *libunity_handle = nullptr;
void GHOST_TaskBarX11::free()
{
if (libunity_handle) {
dlclose(libunity_handle);
libunity_handle = nullptr;
}
}
bool GHOST_TaskBarX11::init()
{
if (libunity_initialized) {
return libunity_available;
}
libunity_initialized = true;
const char *libunity_names[] = {
"libunity.so.4", "libunity.so.6", "libunity.so.9", "libunity.so", nullptr};
for (int i = 0; libunity_names[i]; i++) {
libunity_handle = dlopen(libunity_names[i], RTLD_LAZY);
if (libunity_handle) {
break;
}
}
if (!libunity_handle) {
return false;
}
unity_get_entry = (unity_get_entry_t)dlsym(libunity_handle,
"unity_launcher_entry_get_for_desktop_id");
if (!unity_get_entry) {
fprintf(stderr, "failed to load libunity: %s\n", dlerror());
return false;
}
unity_set_progress = (unity_set_progress_t)dlsym(libunity_handle,
"unity_launcher_entry_set_progress");
if (!unity_set_progress) {
fprintf(stderr, "failed to load libunity: %s\n", dlerror());
return false;
}
unity_set_progress_visible = (unity_set_progress_visible_t)dlsym(
libunity_handle, "unity_launcher_entry_set_progress_visible");
if (!unity_set_progress_visible) {
fprintf(stderr, "failed to load libunity: %s\n", dlerror());
return false;
}
unity_event_loop = (unity_event_loop_t)dlsym(libunity_handle, "g_main_context_iteration");
if (!unity_event_loop) {
fprintf(stderr, "failed to load libunity: %s\n", dlerror());
return false;
}
atexit(GHOST_TaskBarX11::free);
libunity_available = true;
return true;
}
GHOST_TaskBarX11::GHOST_TaskBarX11(const char *name)
{
if (GHOST_TaskBarX11::init()) {
handle = unity_get_entry(name);
}
else {
handle = nullptr;
}
}
bool GHOST_TaskBarX11::is_valid()
{
return (handle != nullptr);
}
void GHOST_TaskBarX11::set_progress(double progress)
{
assert(is_valid());
unity_set_progress(handle, progress);
}
void GHOST_TaskBarX11::set_progress_enabled(bool enabled)
{
assert(is_valid());
unity_set_progress_visible(handle, enabled ? 1 : 0);
unity_event_loop(nullptr, 0);
}
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