src/statusbar/statusbarspaceinfo.cpp

   1 /*
   2  * SPDX-FileCopyrightText: 2006 Peter Penz (peter.penz@gmx.at) and Patrice Tremblay
   3  *
   4  * SPDX-License-Identifier: GPL-2.0-or-later
   5  */
   6
   7 #include "statusbarspaceinfo.h"
   8
   9 #include "config-dolphin.h"
  10 #include "diskspaceusagemenu.h"
  11 #include "spaceinfoobserver.h"
  12
  13 #include <KCapacityBar>
  14 #include <KIO/Global>
  15 #include <KLocalizedString>
  16
  17 #include <QHBoxLayout>
  18 #include <QToolButton>
  19
  20 StatusBarSpaceInfo::StatusBarSpaceInfo(QWidget *parent)
  21     : QWidget(parent)
  22     , m_observer(nullptr)
  23     , m_hasSpaceInfo{false}
  24     , m_shown{false}
  25 {
  26     hide(); // Only become visible when we have space info to show. @see StatusBarSpaceInfo::setShown().
  27
  28     m_capacityBar = new KCapacityBar(KCapacityBar::DrawTextInline, this);
  29     m_textInfoButton = new QToolButton(this);
  30     m_textInfoButton->setAutoRaise(true);
  31     m_textInfoButton->setPopupMode(QToolButton::InstantPopup);
  32     auto menu = new DiskSpaceUsageMenu{this};
  33     connect(menu, &DiskSpaceUsageMenu::showMessage, this, &StatusBarSpaceInfo::showMessage);
  34     connect(menu, &DiskSpaceUsageMenu::showInstallationProgress, this, &StatusBarSpaceInfo::showInstallationProgress);
  35     m_textInfoButton->setMenu(menu);
  36
  37     auto layout = new QHBoxLayout(this);
  38     // We reduce the outside margin of the flat button so it visually has the same margin as the status bar text label on the other end of the bar.
  39     layout->setContentsMargins(2, -1, 0, -1); // "-1" makes it so the fixed height won't be ignored.
  40     layout->addWidget(m_capacityBar);
  41     layout->addWidget(m_textInfoButton);
  42 }
  43
  44 StatusBarSpaceInfo::~StatusBarSpaceInfo()
  45 {
  46 }
  47
  48 void StatusBarSpaceInfo::setShown(bool shown)
  49 {
  50     m_shown = shown;
  51     if (!m_shown) {
  52         hide();
  53         return;
  54     }
  55
  56     // We only show() this widget in slotValueChanged() when it m_hasSpaceInfo.
  57     if (m_observer.isNull()) {
  58         m_observer.reset(new SpaceInfoObserver(m_url, this));
  59         connect(m_observer.data(), &SpaceInfoObserver::valuesChanged, this, &StatusBarSpaceInfo::slotValuesChanged);
  60     }
  61
  62     if (m_hasSpaceInfo) {
  63         slotValuesChanged();
  64     }
  65 }
  66
  67 void StatusBarSpaceInfo::setUrl(const QUrl &url)
  68 {
  69     if (m_url != url) {
  70         m_url = url;
  71         static_cast<DiskSpaceUsageMenu *>(m_textInfoButton->menu())->setUrl(url);
  72         m_hasSpaceInfo = false;
  73         if (m_observer) {
  74             m_observer.reset(new SpaceInfoObserver(m_url, this));
  75             connect(m_observer.data(), &SpaceInfoObserver::valuesChanged, this, &StatusBarSpaceInfo::slotValuesChanged);
  76         }
  77     }
  78 }
  79
  80 QUrl StatusBarSpaceInfo::url() const
  81 {
  82     return m_url;
  83 }
  84
  85 void StatusBarSpaceInfo::update()
  86 {
  87     if (m_observer) {
  88         m_observer->update();
  89     }
  90 }
  91
  92 void StatusBarSpaceInfo::showEvent(QShowEvent *event)
  93 {
  94     if (m_shown && m_observer.isNull()) {
  95         m_observer.reset(new SpaceInfoObserver(m_url, this));
  96         connect(m_observer.data(), &SpaceInfoObserver::valuesChanged, this, &StatusBarSpaceInfo::slotValuesChanged);
  97     }
  98     QWidget::showEvent(event);
  99 }
 100
 101 void StatusBarSpaceInfo::hideEvent(QHideEvent *event)
 102 {
 103     if (m_hasSpaceInfo) {
 104         m_observer.reset();
 105         m_hasSpaceInfo = false;
 106     }
 107     QWidget::hideEvent(event);
 108 }
 109
 110 QSize StatusBarSpaceInfo::minimumSizeHint() const
 111 {
 112     return QSize();
 113 }
 114
 115 void StatusBarSpaceInfo::slotValuesChanged()
 116 {
 117     Q_ASSERT(m_observer);
 118     const quint64 size = m_observer->size();
 119
 120     if (!m_shown || size == 0) {
 121         hide();
 122         return;
 123     }
 124
 125     m_hasSpaceInfo = true;
 126
 127     const quint64 available = m_observer->available();
 128     const quint64 used = size - available;
 129     const int percentUsed = qRound(100.0 * qreal(used) / qreal(size));
 130
 131     m_textInfoButton->setText(i18nc("@info:status Free disk space", "%1 free", KIO::convertSize(available)));
 132     setToolTip(i18nc("tooltip:status Free disk space", "%1 free out of %2 (%3% used)", KIO::convertSize(available), KIO::convertSize(size), percentUsed));
 133     m_textInfoButton->setToolTip(i18nc("@info:tooltip for the free disk space button",
 134                                        "%1 free out of %2 (%3% used)\nPress to manage disk space usage.",
 135                                        KIO::convertSize(available),
 136                                        KIO::convertSize(size),
 137                                        percentUsed));
 138     setUpdatesEnabled(false);
 139     m_capacityBar->setValue(percentUsed);
 140     setUpdatesEnabled(true);
 141
 142     if (!isVisible()) {
 143         show();
 144     } else {
 145         update();
 146     }
 147 }
 148
 149 #include "moc_statusbarspaceinfo.cpp"