src/statusbar/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 <KDiskFreeSpaceInfo>
  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_kBSize(0),
  34     m_timer(0)
  35 {
  36     // Use a timer to update the space information. Polling is useful
  37     // here, as files can be deleted/added outside the scope of Dolphin.
  38     m_timer = new QTimer(this);
  39     connect(m_timer, SIGNAL(timeout()), this, SLOT(refresh()));
  40 }
  41
  42 StatusBarSpaceInfo::~StatusBarSpaceInfo()
  43 {
  44 }
  45
  46 void StatusBarSpaceInfo::setUrl(const KUrl& url)
  47 {
  48     m_url = url;
  49     refresh();
  50 }
  51
  52 KUrl StatusBarSpaceInfo::url() const
  53 {
  54     return m_url;
  55 }
  56
  57 void StatusBarSpaceInfo::showEvent(QShowEvent* event)
  58 {
  59     KCapacityBar::showEvent(event);
  60     if (!event->spontaneous()) {
  61         refresh();
  62         m_timer->start(10000);
  63     }
  64 }
  65
  66 void StatusBarSpaceInfo::hideEvent(QHideEvent* event)
  67 {
  68     m_timer->stop();
  69     KCapacityBar::hideEvent(event);
  70 }
  71
  72 void StatusBarSpaceInfo::refresh()
  73 {
  74     if (!isVisible()) {
  75         return;
  76     }
  77
  78     // KDiskFreeSpace is for local paths only
  79     if (!m_url.isLocalFile()) {
  80         setText(i18nc("@info:status", "Unknown size"));
  81         setValue(0);
  82         update();
  83         return;
  84     }
  85
  86     KMountPoint::Ptr mp = KMountPoint::currentMountPoints().findByPath(m_url.toLocalFile());
  87     if (!mp) {
  88         return;
  89     }
  90
  91     KDiskFreeSpaceInfo job = KDiskFreeSpaceInfo::freeSpaceInfo(mp->mountPoint());
  92     if (!job.isValid()) {
  93         setText(i18nc("@info:status", "Unknown size"));
  94         setValue(0);
  95         update();
  96         return;
  97     }
  98
  99     KIO::filesize_t kBSize = job.size() / 1024;
 100     KIO::filesize_t kBUsed = job.used() / 1024;
 101
 102     const bool valuesChanged = (kBUsed != static_cast<quint64>(value())) || (kBSize != m_kBSize);
 103     if (valuesChanged) {
 104         setText(i18nc("@info:status Free disk space", "%1 free",
 105                 KIO::convertSize(job.available())));
 106
 107         setUpdatesEnabled(false);
 108         m_kBSize = kBSize;
 109         setValue(kBSize > 0 ? (kBUsed * 100) / kBSize : 0);
 110         setUpdatesEnabled(true);
 111         update();
 112     }
 113 }
 114
 115 #include "statusbarspaceinfo.moc"