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 <KLocale>
  25 #include <KIO/Job>
  26
  27 #include <QTimer>
  28 #include <QKeyEvent>
  29
  30 StatusBarSpaceInfo::StatusBarSpaceInfo(QWidget* parent) :
  31     KCapacityBar(KCapacityBar::DrawTextInline, parent),
  32     m_kBSize(0),
  33     m_timer(0)
  34 {
  35     // Use a timer to update the space information. Polling is useful
  36     // here, as files can be deleted/added outside the scope of Dolphin.
  37     m_timer = new QTimer(this);
  38     connect(m_timer, SIGNAL(timeout()), this, SLOT(calculateSpaceInfo()));
  39 }
  40
  41 StatusBarSpaceInfo::~StatusBarSpaceInfo()
  42 {
  43 }
  44
  45 void StatusBarSpaceInfo::setUrl(const KUrl& url)
  46 {
  47     if (m_url != url) {
  48         m_url = url;
  49         if (isVisible()) {
  50             calculateSpaceInfo();
  51         }
  52     }
  53 }
  54
  55 KUrl StatusBarSpaceInfo::url() const
  56 {
  57     return m_url;
  58 }
  59
  60 void StatusBarSpaceInfo::showEvent(QShowEvent* event)
  61 {
  62     KCapacityBar::showEvent(event);
  63     if (!event->spontaneous()) {
  64         calculateSpaceInfo();
  65         m_timer->start(10000);
  66     }
  67 }
  68
  69 void StatusBarSpaceInfo::hideEvent(QHideEvent* event)
  70 {
  71     m_timer->stop();
  72     KCapacityBar::hideEvent(event);
  73 }
  74
  75 void StatusBarSpaceInfo::calculateSpaceInfo()
  76 {
  77     // KDiskFreeSpace is for local paths only
  78     if (!m_url.isLocalFile()) {
  79         setText(i18nc("@info:status", "Unknown size"));
  80         setValue(0);
  81         update();
  82         return;
  83     }
  84
  85     KDiskFreeSpaceInfo job = KDiskFreeSpaceInfo::freeSpaceInfo(m_url.toLocalFile());
  86     if (!job.isValid()) {
  87         setText(i18nc("@info:status", "Unknown size"));
  88         setValue(0);
  89         update();
  90         return;
  91     }
  92
  93     KIO::filesize_t kBSize = job.size() / 1024;
  94     KIO::filesize_t kBUsed = job.used() / 1024;
  95
  96     const bool valuesChanged = (kBUsed != static_cast<quint64>(value())) || (kBSize != m_kBSize);
  97     if (valuesChanged) {
  98         setText(i18nc("@info:status Free disk space", "%1 free",
  99                 KIO::convertSize(job.available())));
 100
 101         setUpdatesEnabled(false);
 102         m_kBSize = kBSize;
 103         setValue(kBSize > 0 ? (kBUsed * 100) / kBSize : 0);
 104         setUpdatesEnabled(true);
 105         update();
 106     }
 107 }
 108
 109 #include "statusbarspaceinfo.moc"