diff options
Diffstat (limited to 'src/sources/batterysrc.cpp')
| -rw-r--r-- | src/sources/batterysrc.cpp | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/sources/batterysrc.cpp b/src/sources/batterysrc.cpp new file mode 100644 index 0000000..b8f73ac --- /dev/null +++ b/src/sources/batterysrc.cpp @@ -0,0 +1,141 @@ +/*************************************************************************** + * Copyright (C) 2007 by Ken Werner * + * [email protected] * + * * + * 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; +} |