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