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/***************************************************************************
* Copyright (C) 2007 by Ken Werner *
* ken.werner@web.de *
* *
* 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. *
***************************************************************************/
#include "batterysrc.h"
#include <klocale.h>
#include <kdebug.h>
#define DBUS_DEBUG_MESSAGE(func, _dbus_err_) \
kdDebug() << "error in " << func << ": " << _dbus_err_.name << ", " << _dbus_err_.message << endl
#define FREE_DBUS_ERROR(func, _dbus_err_) \
do { \
if(dbus_error_is_set(&_dbus_err_)) { \
DBUS_DEBUG_MESSAGE(func, _dbus_err_); \
dbus_error_free(&_dbus_err_); \
} \
} while(0)
BatterySrc::BatterySrc(QWidget* inParent, QString inUDI):
LabelSource(inParent),
mTrigger(this, 5000),
mUDI(inUDI),
mLibHalContext(NULL){
mID = mUDI.section('/', -1);
mName = mID;
mDescription = i18n("This source displays the current state of charge of your battery.");
dbus_error_init(&mDBusError);
if((mLibHalContext = libhal_ctx_new()) == NULL){
kdDebug() << "error: libmLibHalContext_new" << endl;
return;
}
if(!libhal_ctx_set_dbus_connection(mLibHalContext, dbus_bus_get (DBUS_BUS_SYSTEM, &mDBusError))){
FREE_DBUS_ERROR("libhal_ctx_set_dbus_connection", mDBusError);
libhal_ctx_free(mLibHalContext);
mLibHalContext = NULL;
return;
}
if(!libhal_ctx_init(mLibHalContext, &mDBusError)){
FREE_DBUS_ERROR("libhal_ctx_init", mDBusError);
libhal_ctx_free(mLibHalContext);
mLibHalContext = NULL;
return;
}
}
BatterySrc::~BatterySrc(){
if(mLibHalContext != NULL){
if(!libhal_ctx_shutdown(mLibHalContext, &mDBusError)){
FREE_DBUS_ERROR("libhal_ctx_shutdown", mDBusError);
}
libhal_ctx_free(mLibHalContext);
}
}
std::list<Source*>BatterySrc::createInstances(QWidget* inParent){
std::list<Source*> list;
LibHalContext* libHalContext;
DBusError dBusError;
dbus_error_init(&dBusError);
if((libHalContext = libhal_ctx_new()) == NULL){
kdDebug() << "error: libmLibHalContext_new" << endl;
return list;
}
if(!libhal_ctx_set_dbus_connection(libHalContext, dbus_bus_get (DBUS_BUS_SYSTEM, &dBusError))){
FREE_DBUS_ERROR("libhal_ctx_set_dbus_connection", dBusError);
libhal_ctx_free(libHalContext);
return list;
}
if(!libhal_ctx_init(libHalContext, &dBusError)){
FREE_DBUS_ERROR("libhal_ctx_init", dBusError);
libhal_ctx_free(libHalContext);
return list;
}
int num = 0;
char** udis = libhal_manager_find_device_string_match(libHalContext, "info.category", "battery", &num, &dBusError);
if(!dbus_error_is_set(&dBusError)){
for(int i = 0; i < num; ++i){
if(libhal_device_get_property_type(libHalContext, udis[i], "battery.charge_level.last_full", &dBusError) == LIBHAL_PROPERTY_TYPE_INT32 && libhal_device_get_property_type(libHalContext, udis[i], "battery.charge_level.current", &dBusError) == LIBHAL_PROPERTY_TYPE_INT32){
if(!dbus_error_is_set(&dBusError)) // todo: check whether this check is redundant
list.push_back(new BatterySrc(inParent, udis[i]));
}
if(dbus_error_is_set(&dBusError)) {
DBUS_DEBUG_MESSAGE("libhal_device_get_property_type", dBusError);
dbus_error_free(&dBusError);
}
}
} else {
DBUS_DEBUG_MESSAGE("libhal_manager_find_device_string_match", dBusError);
dbus_error_free(&dBusError);
}
if(!libhal_ctx_shutdown(libHalContext, &dBusError)){
FREE_DBUS_ERROR("libhal_ctx_shutdown", dBusError);
}
// clean up
libhal_ctx_free(libHalContext);
libhal_free_string_array(udis);
return list;
}
QString BatterySrc::fetchValue() {
QString s = "n/a";
if(mLibHalContext != NULL){
int last_full = 0;
int current = 0;
last_full = libhal_device_get_property_int(mLibHalContext, mUDI.ascii(), "battery.charge_level.last_full", &mDBusError);
if(dbus_error_is_set(&mDBusError)){
DBUS_DEBUG_MESSAGE("libhal_device_get_property_int", mDBusError);
dbus_error_free(&mDBusError);
return s;
}
current = libhal_device_get_property_int(mLibHalContext, mUDI.ascii(), "battery.charge_level.current", &mDBusError);
if(dbus_error_is_set(&mDBusError)){
DBUS_DEBUG_MESSAGE("libhal_device_get_property_int", mDBusError);
dbus_error_free(&mDBusError);
return s;
}
s = QString::number(qRound((current * 100.0) / last_full)) + " %";
}
return s;
}
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