src/statusbarspaceinfo.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz (peter.penz@gmx.at) and              *
   3  *   and Patrice Tremblay                                                  *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
  19  ***************************************************************************/
  20
  21 #include "statusbarspaceinfo.h"
  22
  23 #include <kdiskfreespace.h>
  24 #include <kmountpoint.h>
  25 #include <klocale.h>
  26 #include <kio/job.h>
  27
  28 #include <QTimer>
  29 #include <QKeyEvent>
  30
  31 StatusBarSpaceInfo::StatusBarSpaceInfo(QWidget* parent) :
  32     QProgressBar(parent),
  33     m_gettingSize(false),
  34     m_text()
  35 {
  36     setMinimum(0);
  37     setMaximum(0);
  38
  39     setMaximumWidth(200);
  40
  41     // Update the space information each 10 seconds. Polling is useful
  42     // here, as files can be deleted/added outside the scope of Dolphin.
  43     QTimer* timer = new QTimer(this);
  44     connect(timer, SIGNAL(timeout()), this, SLOT(refresh()));
  45     timer->start(10000);
  46 }
  47
  48 StatusBarSpaceInfo::~StatusBarSpaceInfo()
  49 {
  50 }
  51
  52 void StatusBarSpaceInfo::setUrl(const KUrl& url)
  53 {
  54     m_url = url;
  55     refresh();
  56 }
  57
  58 QString StatusBarSpaceInfo::text() const
  59 {
  60     return m_text;
  61 }
  62
  63 void StatusBarSpaceInfo::slotFoundMountPoint(const QString& mountPoint,
  64                                              quint64 kBSize,
  65                                              quint64 kBUsed,
  66                                              quint64 kBAvailable)
  67 {
  68     Q_UNUSED(kBSize);
  69     Q_UNUSED(mountPoint);
  70
  71     m_gettingSize = false;
  72     const bool valuesChanged = (kBUsed != static_cast<quint64>(value())) ||
  73                                (kBAvailable != static_cast<quint64>(maximum()));
  74     if (valuesChanged) {
  75         m_text = i18nc("@info:status", "%1 free", KIO::convertSizeFromKiB(kBAvailable));
  76         setMaximum(kBAvailable);
  77         setValue(kBUsed);
  78     }
  79 }
  80
  81 void StatusBarSpaceInfo::refresh()
  82 {
  83     // KDiskFreeSpace is for local paths only
  84     if (!m_url.isLocalFile()) {
  85         return;
  86     }
  87
  88     KMountPoint::Ptr mp = KMountPoint::currentMountPoints().findByPath(m_url.path());
  89     if (!mp) {
  90         return;
  91     }
  92
  93     m_gettingSize = true;
  94     KDiskFreeSpace* job = new KDiskFreeSpace(this);
  95     connect(job, SIGNAL(foundMountPoint(const QString&,
  96                                         quint64,
  97                                         quint64,
  98                                         quint64)),
  99             this, SLOT(slotFoundMountPoint(const QString&,
 100                                            quint64,
 101                                            quint64,
 102                                            quint64)));
 103
 104     job->readDF(mp->mountPoint());
 105
 106     // refresh() is invoked for each directory change. Usually getting
 107     // the size information can be done very fast, so to prevent any
 108     // flickering the "Getting size..." indication is only shown if
 109     // at least 300 ms have been passed.
 110     QTimer::singleShot(300, this, SLOT(showGettingSizeInfo()));
 111 }
 112
 113 void StatusBarSpaceInfo::showGettingSizeInfo()
 114 {
 115     if (m_gettingSize) {
 116         m_text = i18nc("@info:status", "Getting size...");
 117         setMinimum(0);
 118         setMaximum(0);
 119     }
 120 }
 121
 122 #include "statusbarspaceinfo.moc"