tdebacklightdevice.cpp

/* This file is part of the TDE libraries
   Copyright (C) 2012 Timothy Pearson <kb9vqf@pearsoncomputing.net>
             (C) 2013 Golubev Alexander <fatzer2@gmail.com>
 
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License version 2 as published by the Free Software Foundation.
 
   This library 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
   Library General Public License for more details.
 
   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/
 
#include "tdebacklightdevice.h"
 
#include <unistd.h>
 
#include <tqfile.h>
 
#include "config.h"
 
// uPower
#if defined(WITH_TDEHWLIB_DAEMONS)
    #include <tqdbusdata.h>
    #include <tqdbusmessage.h>
    #include <tqdbusproxy.h>
    #include <tqdbusvariant.h>
    #include <tqdbusconnection.h>
#endif // defined(WITH_TDEHWLIB_DAEMONS)
 
TDEBacklightDevice::TDEBacklightDevice(TDEGenericDeviceType::TDEGenericDeviceType dt, TQString dn) : TDEGenericDevice(dt, dn) {
}
 
TDEBacklightDevice::~TDEBacklightDevice() {
}
 
TDEDisplayPowerLevel::TDEDisplayPowerLevel TDEBacklightDevice::powerLevel() {
    return m_powerLevel;
}
 
void TDEBacklightDevice::internalSetPowerLevel(TDEDisplayPowerLevel::TDEDisplayPowerLevel pl) {
    m_powerLevel = pl;
}
 
void TDEBacklightDevice::internalSetMaximumRawBrightness(int br) {
    m_maximumBrightness = br;
}
 
void TDEBacklightDevice::internalSetCurrentRawBrightness(int br) {
    m_currentBrightness = br;
}
 
int TDEBacklightDevice::brightnessSteps() {
    return m_maximumBrightness + 1;
}
 
double TDEBacklightDevice::brightnessPercent() {
    return (((m_currentBrightness*1.0)/m_maximumBrightness)*100.0);
}
 
bool TDEBacklightDevice::canSetBrightness() {
    TQString brightnessnode = systemPath() + "/brightness";
    int rval = access (brightnessnode.ascii(), W_OK);
    if (rval == 0) {
        return true;
    }
 
#ifdef WITH_TDEHWLIB_DAEMONS
    {
        TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
        if (dbusConn.isConnected()) {
            TQT_DBusProxy hardwareControl("org.trinitydesktop.hardwarecontrol", "/org/trinitydesktop/hardwarecontrol", "org.trinitydesktop.hardwarecontrol.Brightness", dbusConn);
            if (hardwareControl.canSend()) {
                // can set brightness?
                TQValueList<TQT_DBusData> params;
                params << TQT_DBusData::fromString(brightnessnode);
                TQT_DBusMessage reply = hardwareControl.sendWithReply("CanSetBrightness", params);
                if (reply.type() == TQT_DBusMessage::ReplyMessage && reply.count() == 1) {
                    return reply[0].toBool();
                }
            }
        }
    }
#endif // WITH_TDEHWLIB_DAEMONS
 
    return false;
}
 
int TDEBacklightDevice::rawBrightness() {
    return m_currentBrightness;
}
 
void TDEBacklightDevice::setRawBrightness(int br) {
    bool setRawBrightnessDone = false;
 
    TQString brightnessnode = systemPath() + "/brightness";
    TQString brightnessCommand = TQString("%1").arg(br);
    TQFile file( brightnessnode );
    if ( file.open( IO_WriteOnly ) ) {
        TQTextStream stream( &file );
        stream << brightnessCommand;
        file.close();
        setRawBrightnessDone = true;
    }
 
#ifdef WITH_TDEHWLIB_DAEMONS
    if ( !setRawBrightnessDone ) {
        TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
        if (dbusConn.isConnected()) {
            TQT_DBusProxy hardwareControl("org.trinitydesktop.hardwarecontrol", "/org/trinitydesktop/hardwarecontrol", "org.trinitydesktop.hardwarecontrol.Brightness", dbusConn);
            if (hardwareControl.canSend()) {
                // set brightness
                TQValueList<TQT_DBusData> params;
                params << TQT_DBusData::fromString(brightnessnode) << TQT_DBusData::fromString(brightnessCommand);
                TQT_DBusMessage reply = hardwareControl.sendWithReply("SetBrightness", params);
                if (reply.type() == TQT_DBusMessage::ReplyMessage) {
                    setRawBrightnessDone = true;
                }
            }
        }
    }
#endif // WITH_TDEHWLIB_DAEMONS
 
}
 
#include "tdebacklightdevice.moc"