workspace/plasma/dataengines/mouse/mouseengine.cpp

   1 /*
   2  *   Copyright © 2007 Fredrik Höglund <fredrik@kde.org>
   3  *
   4  *   This program is free software; you can redistribute it and/or modify
   5  *   it under the terms of the GNU Library General Public License version 2 as
   6  *   published by the Free Software Foundation
   7  *
   8  *   This program is distributed in the hope that it will be useful,
   9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *   GNU General Public License for more details
  12  *
  13  *   You should have received a copy of the GNU Library General Public
  14  *   License along with this program; if not, write to the
  15  *   Free Software Foundation, Inc.,
  16  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17  */
  18
  19 #include "mouseengine.h"
  20
  21 #include <QCursor>
  22
  23 #ifdef HAVE_XFIXES
  24 #  include "cursornotificationhandler.h"
  25 #endif
  26
  27
  28 MouseEngine::MouseEngine(QObject* parent, const QVariantList& args)
  29     : Plasma::DataEngine(parent, args), timerId(0)
  30 #ifdef HAVE_XFIXES
  31 , handler(0)
  32 #endif
  33 {
  34     Q_UNUSED(args)
  35 }
  36
  37
  38 MouseEngine::~MouseEngine()
  39 {
  40     if (timerId)
  41         killTimer(timerId);
  42 #ifdef HAVE_XFIXES
  43     delete handler;
  44 #endif
  45 }
  46
  47
  48 QStringList MouseEngine::sources() const
  49 {
  50    QStringList list;
  51
  52    list << QLatin1String("Position");
  53 #ifdef HAVE_XFIXES
  54    list << QLatin1String("Name");
  55 #endif
  56
  57    return list;
  58 }
  59
  60
  61 void MouseEngine::init()
  62 {
  63     if (!timerId)
  64         timerId = startTimer(40);
  65
  66     // Init cursor position
  67     QPoint pos = QCursor::pos();
  68     setData(QLatin1String("Position"), QVariant(pos));
  69     lastPosition = pos;
  70
  71 #ifdef HAVE_XFIXES
  72     handler = new CursorNotificationHandler;
  73     connect(handler, SIGNAL(cursorNameChanged(QString)), SLOT(updateCursorName(QString)));
  74
  75     setData(QLatin1String("Name"), QVariant(handler->cursorName()));
  76 #endif
  77
  78     scheduleSourcesUpdated();
  79 }
  80
  81
  82 void MouseEngine::timerEvent(QTimerEvent *)
  83 {
  84     QPoint pos = QCursor::pos();
  85
  86     if (pos != lastPosition)
  87     {
  88         setData(QLatin1String("Position"), QVariant(pos));
  89         lastPosition = pos;
  90
  91         scheduleSourcesUpdated();
  92     }
  93 }
  94
  95
  96 void MouseEngine::updateCursorName(const QString &name)
  97 {
  98     setData(QLatin1String("Name"), QVariant(name));
  99     scheduleSourcesUpdated();
 100 }
 101
 102 #include "mouseengine.moc"
 103