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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Contributor(s):
* Lukas Stockner
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file ghost/intern/GHOST_TaskbarX11.cpp
* \ingroup GHOST
*/
#include "GHOST_TaskbarX11.h"
#include <dlfcn.h>
#include <cstdio>
#include <cassert>
#include <cstdlib>
typedef void*(*unity_get_entry_t)(const char*);
typedef void(*unity_set_progress_t)(void*, double);
typedef void(*unity_set_progress_visible_t)(void*, int);
typedef int(*unity_event_loop_t)(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;
void* libunity_handle = NULL;
void GHOST_TaskBarX11::free()
{
if(libunity_handle) {
dlclose(libunity_handle);
libunity_handle = NULL;
}
}
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", NULL};
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 = NULL;
}
}
bool GHOST_TaskBarX11::is_valid()
{
return (handle != NULL);
}
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(NULL, 0);
}
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