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 "spaceinfoobserver.h"
  24
  25 #include <KLocalizedString>
  26 #include <KNS3/KMoreToolsMenuFactory>
  27
  28 #include <QMouseEvent>
  29
  30 StatusBarSpaceInfo::StatusBarSpaceInfo(QWidget* parent) :
  31     KCapacityBar(KCapacityBar::DrawTextInline, parent),
  32     m_observer(nullptr)
  33 {
  34     setCursor(Qt::PointingHandCursor);
  35 }
  36
  37 StatusBarSpaceInfo::~StatusBarSpaceInfo()
  38 {
  39 }
  40
  41 void StatusBarSpaceInfo::setShown(bool shown)
  42 {
  43     m_shown = shown;
  44     if (!m_shown) {
  45         hide();
  46         m_ready = false;
  47     }
  48 }
  49
  50 void StatusBarSpaceInfo::setUrl(const QUrl& url)
  51 {
  52     if (m_url != url) {
  53         m_url = url;
  54         m_ready = false;
  55         if (m_observer) {
  56             m_observer.reset(new SpaceInfoObserver(m_url, this));
  57             connect(m_observer.data(), &SpaceInfoObserver::valuesChanged, this, &StatusBarSpaceInfo::slotValuesChanged);
  58         }
  59     }
  60 }
  61
  62 QUrl StatusBarSpaceInfo::url() const
  63 {
  64     return m_url;
  65 }
  66
  67 void StatusBarSpaceInfo::update()
  68 {
  69     if (m_observer) {
  70         m_observer->update();
  71     }
  72 }
  73
  74 void StatusBarSpaceInfo::showEvent(QShowEvent* event)
  75 {
  76     if (m_shown) {
  77         if (m_ready) {
  78             KCapacityBar::showEvent(event);
  79         }
  80
  81         if (m_observer.isNull()) {
  82             m_observer.reset(new SpaceInfoObserver(m_url, this));
  83             connect(m_observer.data(), &SpaceInfoObserver::valuesChanged, this, &StatusBarSpaceInfo::slotValuesChanged);
  84         }
  85     }
  86 }
  87
  88 void StatusBarSpaceInfo::hideEvent(QHideEvent* event)
  89 {
  90     if (m_ready) {
  91         m_observer.reset();
  92         m_ready = false;
  93     }
  94     KCapacityBar::hideEvent(event);
  95 }
  96
  97 void StatusBarSpaceInfo::mousePressEvent(QMouseEvent* event)
  98 {
  99     if (event->button() == Qt::LeftButton) {
 100         // Creates a menu with tools that help to find out more about free
 101         // disk space for the given url.
 102
 103         // Note that this object must live long enough in case the user opens
 104         // the "Configure..." dialog
 105         KMoreToolsMenuFactory menuFactory(QStringLiteral("dolphin/statusbar-diskspace-menu"));
 106         menuFactory.setParentWidget(this);
 107         auto menu = menuFactory.createMenuFromGroupingNames(
 108             { "disk-usage", "more:", "disk-partitions" }, m_url);
 109
 110         menu->exec(QCursor::pos());
 111     }
 112 }
 113
 114 void StatusBarSpaceInfo::slotValuesChanged()
 115 {
 116     Q_ASSERT(m_observer);
 117     const quint64 size = m_observer->size();
 118
 119     if (!m_shown || size == 0) {
 120         hide();
 121         return;
 122     }
 123
 124     m_ready = true;
 125
 126     const quint64 available = m_observer->available();
 127     const quint64 used = size - available;
 128     const int percentUsed = qRound(100.0 * qreal(used) / qreal(size));
 129
 130     setText(i18nc("@info:status Free disk space", "%1 free", KIO::convertSize(available)));
 131     setUpdatesEnabled(false);
 132     setValue(percentUsed);
 133     setUpdatesEnabled(true);
 134
 135     if (!isVisible()) {
 136         show();
 137     } else {
 138         update();
 139     }
 140 }
 141