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tdebacklightdevice.cpp
1 /* This file is part of the TDE libraries
2  Copyright (C) 2012 Timothy Pearson <kb9vqf@pearsoncomputing.net>
3  (C) 2013 Golubev Alexander <fatzer2@gmail.com>
4 
5  This library is free software; you can redistribute it and/or
6  modify it under the terms of the GNU Library General Public
7  License version 2 as published by the Free Software Foundation.
8 
9  This library is distributed in the hope that it will be useful,
10  but WITHOUT ANY WARRANTY; without even the implied warranty of
11  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  Library General Public License for more details.
13 
14  You should have received a copy of the GNU Library General Public License
15  along with this library; see the file COPYING.LIB. If not, write to
16  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17  Boston, MA 02110-1301, USA.
18 */
19 
20 #include "tdebacklightdevice.h"
21 
22 #include <unistd.h>
23 
24 #include <tqfile.h>
25 
26 #include "config.h"
27 
28 // uPower
29 #if defined(WITH_TDEHWLIB_DAEMONS)
30  #include <tqdbusdata.h>
31  #include <tqdbusmessage.h>
32  #include <tqdbusproxy.h>
33  #include <tqdbusvariant.h>
34  #include <tqdbusconnection.h>
35 #endif // defined(WITH_TDEHWLIB_DAEMONS)
36 
37 TDEBacklightDevice::TDEBacklightDevice(TDEGenericDeviceType::TDEGenericDeviceType dt, TQString dn) : TDEGenericDevice(dt, dn) {
38 }
39 
40 TDEBacklightDevice::~TDEBacklightDevice() {
41 }
42 
43 TDEDisplayPowerLevel::TDEDisplayPowerLevel TDEBacklightDevice::powerLevel() {
44  return m_powerLevel;
45 }
46 
47 void TDEBacklightDevice::internalSetPowerLevel(TDEDisplayPowerLevel::TDEDisplayPowerLevel pl) {
48  m_powerLevel = pl;
49 }
50 
51 void TDEBacklightDevice::internalSetMaximumRawBrightness(int br) {
52  m_maximumBrightness = br;
53 }
54 
55 void TDEBacklightDevice::internalSetCurrentRawBrightness(int br) {
56  m_currentBrightness = br;
57 }
58 
59 int TDEBacklightDevice::brightnessSteps() {
60  return m_maximumBrightness + 1;
61 }
62 
63 double TDEBacklightDevice::brightnessPercent() {
64  return (((m_currentBrightness*1.0)/m_maximumBrightness)*100.0);
65 }
66 
67 bool TDEBacklightDevice::canSetBrightness() {
68  TQString brightnessnode = systemPath() + "/brightness";
69  int rval = access (brightnessnode.ascii(), W_OK);
70  if (rval == 0) {
71  return TRUE;
72  }
73 
74 #ifdef WITH_TDEHWLIB_DAEMONS
75  {
76  TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
77  if (dbusConn.isConnected()) {
78  TQT_DBusProxy hardwareControl("org.trinitydesktop.hardwarecontrol", "/org/trinitydesktop/hardwarecontrol", "org.trinitydesktop.hardwarecontrol.Brightness", dbusConn);
79  if (hardwareControl.canSend()) {
80  // can set brightness?
81  TQValueList<TQT_DBusData> params;
82  params << TQT_DBusData::fromString(brightnessnode);
83  TQT_DBusMessage reply = hardwareControl.sendWithReply("CanSetBrightness", params);
84  if (reply.type() == TQT_DBusMessage::ReplyMessage && reply.count() == 1) {
85  return reply[0].toBool();
86  }
87  }
88  }
89  }
90 #endif // WITH_TDEHWLIB_DAEMONS
91 
92  return FALSE;
93 }
94 
95 int TDEBacklightDevice::rawBrightness() {
96  return m_currentBrightness;
97 }
98 
99 void TDEBacklightDevice::setRawBrightness(int br) {
100  bool setRawBrightnessDone = FALSE;
101 
102  TQString brightnessnode = systemPath() + "/brightness";
103  TQString brightnessCommand = TQString("%1").arg(br);
104  TQFile file( brightnessnode );
105  if ( file.open( IO_WriteOnly ) ) {
106  TQTextStream stream( &file );
107  stream << brightnessCommand;
108  file.close();
109  setRawBrightnessDone = TRUE;
110  }
111 
112 #ifdef WITH_TDEHWLIB_DAEMONS
113  if ( !setRawBrightnessDone ) {
114  TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
115  if (dbusConn.isConnected()) {
116  TQT_DBusProxy hardwareControl("org.trinitydesktop.hardwarecontrol", "/org/trinitydesktop/hardwarecontrol", "org.trinitydesktop.hardwarecontrol.Brightness", dbusConn);
117  if (hardwareControl.canSend()) {
118  // set brightness
119  TQValueList<TQT_DBusData> params;
120  params << TQT_DBusData::fromString(brightnessnode) << TQT_DBusData::fromString(brightnessCommand);
121  TQT_DBusMessage reply = hardwareControl.sendWithReply("SetBrightness", params);
122  if (reply.type() == TQT_DBusMessage::ReplyMessage) {
123  setRawBrightnessDone = TRUE;
124  }
125  }
126  }
127  }
128 #endif // WITH_TDEHWLIB_DAEMONS
129 
130 }
131 
132 #include "tdebacklightdevice.moc"

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