apps/dolphin/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 <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     setMaximumWidth(200);
  37     setMinimumWidth(200); // something to fix on kcapacitybar (ereslibre)
  38
  39     // Use a timer to update the space information. Polling is useful
  40     // here, as files can be deleted/added outside the scope of Dolphin.
  41     m_timer = new QTimer(this);
  42     connect(m_timer, SIGNAL(timeout()), this, SLOT(refresh()));
  43 }
  44
  45 StatusBarSpaceInfo::~StatusBarSpaceInfo()
  46 {
  47 }
  48
  49 void StatusBarSpaceInfo::setUrl(const KUrl& url)
  50 {
  51     m_url = url;
  52     refresh();
  53 }
  54
  55 void StatusBarSpaceInfo::showEvent(QShowEvent* event)
  56 {
  57     KCapacityBar::showEvent(event);
  58     if (!event->spontaneous()) {
  59         refresh();
  60         m_timer->start(10000);
  61     }
  62 }
  63
  64 void StatusBarSpaceInfo::hideEvent(QHideEvent* event)
  65 {
  66     m_timer->stop();
  67     KCapacityBar::hideEvent(event);
  68 }
  69
  70 void StatusBarSpaceInfo::refresh()
  71 {
  72     if (!isVisible()) {
  73         return;
  74     }
  75
  76     // KDiskFreeSpace is for local paths only
  77     if (!m_url.isLocalFile()) {
  78         setText(i18nc("@info:status", "Unknown size"));
  79         setValue(0);
  80         update();
  81         return;
  82     }
  83
  84     KMountPoint::Ptr mp = KMountPoint::currentMountPoints().findByPath(m_url.path());
  85     if (!mp) {
  86         return;
  87     }
  88
  89     KDiskFreeSpaceInfo job = KDiskFreeSpaceInfo::freeSpaceInfo(mp->mountPoint());
  90     if (!job.isValid()) {
  91         setText(i18nc("@info:status", "Unknown size"));
  92         setValue(0);
  93         update();
  94         return;
  95     }
  96
  97     KIO::filesize_t kBSize = job.size() / 1024;
  98     KIO::filesize_t kBUsed = job.used() / 1024;
  99
 100     const bool valuesChanged = (kBUsed != static_cast<quint64>(value())) || (kBSize != m_kBSize);
 101     if (valuesChanged) {
 102         setText(i18nc("@info:status Free disk space", "%1 free",
 103                 KIO::convertSize(job.available())));
 104
 105         setUpdatesEnabled(false);
 106         m_kBSize = kBSize;
 107         setValue(kBSize > 0 ? (kBUsed * 100) / kBSize : 0);
 108         setUpdatesEnabled(true);
 109         update();
 110     }
 111 }
 112
 113 #include "statusbarspaceinfo.moc"