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_foundMountPoint(false),
  35     m_text()
  36 {
  37     setMinimum(0);
  38     setMaximum(0);
  39
  40     setMaximumWidth(200);
  41
  42     // Update the space information each 10 seconds. Polling is useful
  43     // here, as files can be deleted/added outside the scope of Dolphin.
  44     QTimer* timer = new QTimer(this);
  45     connect(timer, SIGNAL(timeout()), this, SLOT(refresh()));
  46     timer->start(10000);
  47 }
  48
  49 StatusBarSpaceInfo::~StatusBarSpaceInfo()
  50 {
  51 }
  52
  53 void StatusBarSpaceInfo::setUrl(const KUrl& url)
  54 {
  55     m_url = url;
  56     refresh();
  57 }
  58
  59 QString StatusBarSpaceInfo::text() const
  60 {
  61     return m_text;
  62 }
  63
  64 void StatusBarSpaceInfo::slotFoundMountPoint(const QString& mountPoint,
  65                                              quint64 kBSize,
  66                                              quint64 kBUsed,
  67                                              quint64 kBAvailable)
  68 {
  69     Q_UNUSED(kBSize);
  70     Q_UNUSED(mountPoint);
  71
  72     m_gettingSize = false;
  73     m_foundMountPoint = true;
  74     const bool valuesChanged = (kBUsed != static_cast<quint64>(value())) ||
  75                                (kBAvailable != static_cast<quint64>(maximum()));
  76     if (valuesChanged) {
  77         m_text = i18nc("@info:status Free disk space", "%1 free", KIO::convertSize(kBAvailable * 1024));
  78         setMaximum(kBSize);
  79         setValue(kBUsed);
  80     }
  81 }
  82
  83 void StatusBarSpaceInfo::slotDiskFreeSpaceDone()
  84 {
  85     if (m_foundMountPoint) {
  86         return;
  87     }
  88
  89     m_gettingSize = false;
  90     m_text = i18nc("@info:status", "Unknown size");
  91     setMinimum(0);
  92     setMaximum(0);
  93     setValue(0);
  94 }
  95
  96 void StatusBarSpaceInfo::refresh()
  97 {
  98     // KDiskFreeSpace is for local paths only
  99     if (!m_url.isLocalFile()) {
 100         m_text = i18nc("@info:status", "Unknown size");
 101         update();
 102         return;
 103     }
 104
 105     KMountPoint::Ptr mp = KMountPoint::currentMountPoints().findByPath(m_url.path());
 106     if (!mp) {
 107         return;
 108     }
 109
 110     m_gettingSize = true;
 111     m_foundMountPoint = false;
 112     KDiskFreeSpace* job = new KDiskFreeSpace(this);
 113     connect(job, SIGNAL(foundMountPoint(const QString&,
 114                                         quint64,
 115                                         quint64,
 116                                         quint64)),
 117             this, SLOT(slotFoundMountPoint(const QString&,
 118                                            quint64,
 119                                            quint64,
 120                                            quint64)));
 121     connect(job, SIGNAL(done()), this, SLOT(slotDiskFreeSpaceDone()));
 122
 123     job->readDF(mp->mountPoint());
 124
 125     // refresh() is invoked for each directory change. Usually getting
 126     // the size information can be done very fast, so to prevent any
 127     // flickering the "Getting size..." indication is only shown if
 128     // at least 300 ms have been passed.
 129     QTimer::singleShot(300, this, SLOT(showGettingSizeInfo()));
 130 }
 131
 132 void StatusBarSpaceInfo::showGettingSizeInfo()
 133 {
 134     if (m_gettingSize) {
 135         m_text = i18nc("@info:status", "Getting size...");
 136         update();
 137         setMinimum(0);
 138         setMaximum(0);
 139     }
 140 }
 141
 142 #include "statusbarspaceinfo.moc"