]> cloud.milkyroute.net Git - dolphin.git/blobdiff - src/panels/information/informationpanelcontent.cpp
projects / dolphin.git / blobdiff
? search:
summary | shortlog | log | commit | commitdiff | tree
raw | inline | side by side
Create thumbnails with scene devicePixelRatio
[dolphin.git] / src / panels / information / informationpanelcontent.cpp
diff --git a/src/panels/information/informationpanelcontent.cpp b/src/panels/information/informationpanelcontent.cpp
index e2b90dcc894da300810b0b6c250e3afe61c4765f..23870b0b1457e002256375f95a2f0fe6710d3c83 100644 (file)
--- a/src/panels/information/informationpanelcontent.cpp
+++ b/src/panels/information/informationpanelcontent.cpp
@@ -1,66 +1,61 @@
-/***************************************************************************
- *   Copyright (C) 2009 by Peter Penz <peter.penz19@gmail.com>             *
- *                                                                         *
- *   This program is free software; you can redistribute it and/or modify  *
- *   it under the terms of the GNU General Public License as published by  *
- *   the Free Software Foundation; either version 2 of the License, or     *
- *   (at your option) any later version.                                   *
- *                                                                         *
- *   This program is distributed in the hope that it will be useful,       *
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
- *   GNU General Public License for more details.                          *
- *                                                                         *
- *   You should have received a copy of the GNU General Public License     *
- *   along with this program; if not, write to the                         *
- *   Free Software Foundation, Inc.,                                       *
- *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
- ***************************************************************************/
+/*
+ * SPDX-FileCopyrightText: 2009 Peter Penz <peter.penz19@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
 
 #include "informationpanelcontent.h"
 
 
 #include "informationpanelcontent.h"
 
-#include <KIO/JobUiDelegate>
+#include <KConfigGroup>
 #include <KIO/PreviewJob>
 #include <KIconEffect>
 #include <KIconLoader>
 #include <KJobWidgets>
 #include <KLocalizedString>
 #include <KSeparator>
 #include <KIO/PreviewJob>
 #include <KIconEffect>
 #include <KIconLoader>
 #include <KJobWidgets>
 #include <KLocalizedString>
 #include <KSeparator>
+#include <KSharedConfig>
 #include <KStringHandler>
 #include <KStringHandler>
+#include <QPainterPath>
 
 #include <QIcon>
 
 #include <QIcon>
+#include <QStyle>
 #include <QTextDocument>
 
 #include <Baloo/FileMetaDataWidget>
 
 #include <QTextDocument>
 
 #include <Baloo/FileMetaDataWidget>
 
-#include <panels/places/placesitem.h>
-#include <panels/places/placesitemmodel.h>
-
-#include <Phonon/BackendCapabilities>
-#include <Phonon/MediaObject>
+#include <phonon/BackendCapabilities>
+#include <phonon/MediaObject>
 
 
+#include <QDialogButtonBox>
+#include <QGesture>
 #include <QLabel>
 #include <QLabel>
+#include <QLinearGradient>
+#include <QPainter>
+#include <QPolygon>
 #include <QScrollArea>
 #include <QScrollArea>
+#include <QScroller>
 #include <QTextLayout>
 #include <QTimer>
 #include <QVBoxLayout>
 #include <QTextLayout>
 #include <QTimer>
 #include <QVBoxLayout>
-#include <QStyle>
 
 #include "dolphin_informationpanelsettings.h"
 #include "phononwidget.h"
 #include "pixmapviewer.h"
 
 
 #include "dolphin_informationpanelsettings.h"
 #include "phononwidget.h"
 #include "pixmapviewer.h"
 
-InformationPanelContent::InformationPanelContent(QWidget* parent) :
-    QWidget(parent),
-    m_item(),
-    m_previewJob(nullptr),
-    m_outdatedPreviewTimer(nullptr),
-    m_preview(nullptr),
-    m_phononWidget(nullptr),
-    m_nameLabel(nullptr),
-    m_metaDataWidget(nullptr),
-    m_metaDataArea(nullptr),
-    m_placesItemModel(nullptr)
+const int PLAY_ARROW_SIZE = 24;
+const int PLAY_ARROW_BORDER_SIZE = 2;
+
+InformationPanelContent::InformationPanelContent(QWidget *parent)
+    : QWidget(parent)
+    , m_item()
+    , m_previewJob(nullptr)
+    , m_outdatedPreviewTimer(nullptr)
+    , m_preview(nullptr)
+    , m_phononWidget(nullptr)
+    , m_nameLabel(nullptr)
+    , m_metaDataWidget(nullptr)
+    , m_metaDataArea(nullptr)
+    , m_isVideo(false)
 {
     parent->installEventFilter(this);
 
 {
     parent->installEventFilter(this);
 
@@ -68,12 +63,11 @@ InformationPanelContent::InformationPanelContent(QWidget* parent) :
     // delay. This prevents flickering if the new preview can be generated
     // within a very small timeframe.
     m_outdatedPreviewTimer = new QTimer(this);
     // delay. This prevents flickering if the new preview can be generated
     // within a very small timeframe.
     m_outdatedPreviewTimer = new QTimer(this);
-    m_outdatedPreviewTimer->setInterval(300);
+    m_outdatedPreviewTimer->setInterval(100);
     m_outdatedPreviewTimer->setSingleShot(true);
     m_outdatedPreviewTimer->setSingleShot(true);
-    connect(m_outdatedPreviewTimer, &QTimer::timeout,
-            this, &InformationPanelContent::markOutdatedPreview);
+    connect(m_outdatedPreviewTimer, &QTimer::timeout, this, &InformationPanelContent::markOutdatedPreview);
 
 
-    QVBoxLayout* layout = new QVBoxLayout(this);
+    QVBoxLayout *layout = new QVBoxLayout(this);
 
     // preview
     const int minPreviewWidth = KIconLoader::SizeEnormous + KIconLoader::SizeMedium;
 
     // preview
     const int minPreviewWidth = KIconLoader::SizeEnormous + KIconLoader::SizeMedium;
@@ -85,8 +79,8 @@ InformationPanelContent::InformationPanelContent(QWidget* parent) :
     m_phononWidget = new PhononWidget(parent);
     m_phononWidget->hide();
     m_phononWidget->setMinimumWidth(minPreviewWidth);
     m_phononWidget = new PhononWidget(parent);
     m_phononWidget->hide();
     m_phononWidget->setMinimumWidth(minPreviewWidth);
-    connect(m_phononWidget, &PhononWidget::hasVideoChanged,
-            this, &InformationPanelContent::slotHasVideoChanged);
+    m_phononWidget->setAutoPlay(InformationPanelSettings::previewsAutoPlay());
+    connect(m_phononWidget, &PhononWidget::hasVideoChanged, this, &InformationPanelContent::slotHasVideoChanged);
 
     // name
     m_nameLabel = new QLabel(parent);
 
     // name
     m_nameLabel = new QLabel(parent);
@@ -96,42 +90,55 @@ InformationPanelContent::InformationPanelContent(QWidget* parent) :
     m_nameLabel->setTextFormat(Qt::PlainText);
     m_nameLabel->setAlignment(Qt::AlignHCenter);
     m_nameLabel->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Fixed);
     m_nameLabel->setTextFormat(Qt::PlainText);
     m_nameLabel->setAlignment(Qt::AlignHCenter);
     m_nameLabel->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Fixed);
+    m_nameLabel->setTextInteractionFlags(Qt::TextSelectableByMouse);
 
     const bool previewsShown = InformationPanelSettings::previewsShown();
     m_preview->setVisible(previewsShown);
 
     m_metaDataWidget = new Baloo::FileMetaDataWidget(parent);
     m_metaDataWidget->setDateFormat(static_cast<Baloo::DateFormats>(InformationPanelSettings::dateFormat()));
 
     const bool previewsShown = InformationPanelSettings::previewsShown();
     m_preview->setVisible(previewsShown);
 
     m_metaDataWidget = new Baloo::FileMetaDataWidget(parent);
     m_metaDataWidget->setDateFormat(static_cast<Baloo::DateFormats>(InformationPanelSettings::dateFormat()));
-    connect(m_metaDataWidget, &Baloo::FileMetaDataWidget::urlActivated,
-            this, &InformationPanelContent::urlActivated);
+    connect(m_metaDataWidget, &Baloo::FileMetaDataWidget::urlActivated, this, &InformationPanelContent::urlActivated);
     m_metaDataWidget->setFont(QFontDatabase::systemFont(QFontDatabase::SmallestReadableFont));
     m_metaDataWidget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Minimum);
 
     m_metaDataWidget->setFont(QFontDatabase::systemFont(QFontDatabase::SmallestReadableFont));
     m_metaDataWidget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Minimum);
 
-    // Encapsulate the MetaDataWidget inside a container that has a dummy widget
-    // at the bottom. This prevents that the meta data widget gets vertically stretched
-    // in the case where the height of m_metaDataArea > m_metaDataWidget.
-    QWidget* metaDataWidgetContainer = new QWidget(parent);
-    QVBoxLayout* containerLayout = new QVBoxLayout(metaDataWidgetContainer);
-    containerLayout->setContentsMargins(0, 0, 0, 0);
-    containerLayout->setSpacing(0);
-    containerLayout->addWidget(m_metaDataWidget);
-    containerLayout->addStretch();
+    // Configuration
+    m_configureLabel = new QLabel(i18nc("@label::textbox", "Select which data should be shown:"), this);
+    m_configureLabel->setWordWrap(true);
+    m_configureLabel->setVisible(false);
+
+    m_configureButtons = new QDialogButtonBox(QDialogButtonBox::Save | QDialogButtonBox::Cancel);
+    m_configureButtons->setVisible(false);
+    connect(m_configureButtons, &QDialogButtonBox::accepted, this, [this]() {
+        m_metaDataWidget->setConfigurationMode(Baloo::ConfigurationMode::Accept);
+        m_configureButtons->setVisible(false);
+        m_configureLabel->setVisible(false);
+        Q_EMIT configurationFinished();
+    });
+    connect(m_configureButtons, &QDialogButtonBox::rejected, this, [this]() {
+        m_metaDataWidget->setConfigurationMode(Baloo::ConfigurationMode::Cancel);
+        m_configureButtons->setVisible(false);
+        m_configureLabel->setVisible(false);
+        Q_EMIT configurationFinished();
+    });
 
     m_metaDataArea = new QScrollArea(parent);
 
     m_metaDataArea = new QScrollArea(parent);
-    m_metaDataArea->setWidget(metaDataWidgetContainer);
+    m_metaDataArea->setWidget(m_metaDataWidget);
     m_metaDataArea->setWidgetResizable(true);
     m_metaDataArea->setFrameShape(QFrame::NoFrame);
 
     m_metaDataArea->setWidgetResizable(true);
     m_metaDataArea->setFrameShape(QFrame::NoFrame);
 
-    QWidget* viewport = m_metaDataArea->viewport();
+    QWidget *viewport = m_metaDataArea->viewport();
+    QScroller::grabGesture(viewport, QScroller::TouchGesture);
     viewport->installEventFilter(this);
 
     layout->addWidget(m_preview);
     layout->addWidget(m_phononWidget);
     layout->addWidget(m_nameLabel);
     layout->addWidget(new KSeparator());
     viewport->installEventFilter(this);
 
     layout->addWidget(m_preview);
     layout->addWidget(m_phononWidget);
     layout->addWidget(m_nameLabel);
     layout->addWidget(new KSeparator());
+    layout->addWidget(m_configureLabel);
     layout->addWidget(m_metaDataArea);
     layout->addWidget(m_metaDataArea);
+    layout->addWidget(m_configureButtons);
 
 
-    m_placesItemModel = new PlacesItemModel(this);
+    grabGesture(Qt::TapAndHoldGesture);
 }
 
 InformationPanelContent::~InformationPanelContent()
 }
 
 InformationPanelContent::~InformationPanelContent()
@@ -139,85 +146,132 @@ InformationPanelContent::~InformationPanelContent()
     InformationPanelSettings::self()->save();
 }
 
     InformationPanelSettings::self()->save();
 }
 
-void InformationPanelContent::showItem(const KFileItem& item)
+void InformationPanelContent::showItem(const KFileItem &item)
 {
 {
-    m_item = item;
+    // compares item entries, comparing items only compares urls
+    if (m_item.entry() != item.entry()) {
+        m_item = item;
+        m_preview->stopAnimatedImage();
+        refreshMetaData();
+    }
 
     refreshPreview();
 
     refreshPreview();
-    refreshMetaData();
 }
 
 }
 
-void InformationPanelContent::refreshPreview() {
+void InformationPanelContent::refreshPixmapView()
+{
     // If there is a preview job, kill it to prevent that we have jobs for
     // multiple items running, and thus a race condition (bug 250787).
     if (m_previewJob) {
         m_previewJob->kill();
     }
 
     // If there is a preview job, kill it to prevent that we have jobs for
     // multiple items running, and thus a race condition (bug 250787).
     if (m_previewJob) {
         m_previewJob->kill();
     }
 
-    if (InformationPanelSettings::previewsShown()) {
-        m_preview->show();
+    // try to get a preview pixmap from the item...
+
+    // Mark the currently shown preview as outdated. This is done
+    // with a small delay to prevent a flickering when the next preview
+    // can be shown within a short timeframe.
+    m_outdatedPreviewTimer->start();
+
+    const KConfigGroup globalConfig(KSharedConfig::openConfig(), "PreviewSettings");
+    const QStringList plugins = globalConfig.readEntry("Plugins", KIO::PreviewJob::defaultPlugins());
+    m_previewJob = new KIO::PreviewJob(KFileItemList() << m_item, QSize(m_preview->width(), m_preview->height()), &plugins);
+    m_previewJob->setScaleType(KIO::PreviewJob::Unscaled);
+    m_previewJob->setIgnoreMaximumSize(m_item.isLocalFile() && !m_item.isSlow());
+    m_previewJob->setDevicePixelRatio(devicePixelRatioF());
+    if (m_previewJob->uiDelegate()) {
+        KJobWidgets::setWindow(m_previewJob, this);
+    }
+
+    connect(m_previewJob.data(), &KIO::PreviewJob::gotPreview, this, &InformationPanelContent::showPreview);
+    connect(m_previewJob.data(), &KIO::PreviewJob::failed, this, &InformationPanelContent::showIcon);
+}
 
 
+void InformationPanelContent::refreshPreview()
+{
+    // If there is a preview job, kill it to prevent that we have jobs for
+    // multiple items running, and thus a race condition (bug 250787).
+    if (m_previewJob) {
+        m_previewJob->kill();
+    }
+
+    m_preview->setCursor(Qt::ArrowCursor);
+    setNameLabelText(m_item.text());
+    if (InformationPanelSettings::previewsShown()) {
         const QUrl itemUrl = m_item.url();
         const QUrl itemUrl = m_item.url();
-        const bool isSearchUrl = itemUrl.scheme().contains(QStringLiteral("search")) && m_item.localPath().isEmpty();
-        setNameLabelText(m_item.text());
+        const bool isSearchUrl = itemUrl.scheme().contains(QLatin1String("search")) && m_item.localPath().isEmpty();
         if (isSearchUrl) {
         if (isSearchUrl) {
+            m_preview->show();
+            m_phononWidget->hide();
+
             // in the case of a search-URL the URL is not readable for humans
             // (at least not useful to show in the Information Panel)
             // in the case of a search-URL the URL is not readable for humans
             // (at least not useful to show in the Information Panel)
-            m_preview->setPixmap(
-                QIcon::fromTheme(QStringLiteral("nepomuk")).pixmap(KIconLoader::SizeEnormous, KIconLoader::SizeEnormous)
-            );
+            m_preview->setPixmap(QIcon::fromTheme(QStringLiteral("baloo")).pixmap(m_preview->height(), m_preview->width()));
         } else {
         } else {
-            // try to get a preview pixmap from the item...
-
-            // Mark the currently shown preview as outdated. This is done
-            // with a small delay to prevent a flickering when the next preview
-            // can be shown within a short timeframe. This timer is not started
-            // for directories, as directory previews might fail and return the
-            // same icon.
-            if (!m_item.isDir()) {
-                m_outdatedPreviewTimer->start();
-            }
-
-            QStringList plugins = KIO::PreviewJob::availablePlugins();
-            m_previewJob = new KIO::PreviewJob(KFileItemList() << m_item,
-                                               QSize(m_preview->width(), m_preview->height()),
-                                               &plugins);
-            m_previewJob->setScaleType(KIO::PreviewJob::Unscaled);
-            m_previewJob->setIgnoreMaximumSize(m_item.isLocalFile());
-            if (m_previewJob->uiDelegate()) {
-                KJobWidgets::setWindow(m_previewJob, this);
-            }
-
-            connect(m_previewJob.data(), &KIO::PreviewJob::gotPreview,
-                    this, &InformationPanelContent::showPreview);
-            connect(m_previewJob.data(), &KIO::PreviewJob::failed,
-                    this, &InformationPanelContent::showIcon);
+            refreshPixmapView();
 
             const QString mimeType = m_item.mimetype();
 
             const QString mimeType = m_item.mimetype();
-            const bool usePhonon = mimeType.startsWith(QLatin1String("audio/")) || mimeType.startsWith(QLatin1String("video/"));
+            const bool isAnimatedImage = m_preview->isAnimatedMimeType(mimeType);
+            m_isVideo = !isAnimatedImage && mimeType.startsWith(QLatin1String("video/"));
+            bool usePhonon = m_isVideo || mimeType.startsWith(QLatin1String("audio/"));
+
             if (usePhonon) {
             if (usePhonon) {
+                // change the cursor of the preview
+                m_preview->setCursor(Qt::PointingHandCursor);
+                m_preview->installEventFilter(m_phononWidget);
                 m_phononWidget->show();
                 m_phononWidget->show();
-                m_phononWidget->setUrl(m_item.targetUrl());
-                m_phononWidget->setVideoSize(m_preview->size());
+
+                // if the video is playing, has been paused or stopped
+                // we don't need to update the preview/phonon widget states
+                // unless the previewed file has changed,
+                // or the setting previewshown has changed
+                if ((m_phononWidget->state() != Phonon::State::PlayingState && m_phononWidget->state() != Phonon::State::PausedState
+                     && m_phononWidget->state() != Phonon::State::StoppedState)
+                    || m_item.targetUrl() != m_phononWidget->url() || (!m_preview->isVisible() && !m_phononWidget->isVisible())) {
+                    if (InformationPanelSettings::previewsAutoPlay() && m_isVideo) {
+                        // hides the preview now to avoid flickering when the autoplay video starts
+                        m_preview->hide();
+                    } else {
+                        // the video won't play before the preview is displayed
+                        m_preview->show();
+                    }
+
+                    m_phononWidget->setUrl(m_item.targetUrl(), m_isVideo ? PhononWidget::MediaKind::Video : PhononWidget::MediaKind::Audio);
+                    adjustWidgetSizes(parentWidget()->width());
+                }
             } else {
             } else {
+                if (isAnimatedImage) {
+                    m_preview->setAnimatedImageFileName(itemUrl.toLocalFile());
+                }
+                // When we don't need it, hide the phonon widget first to avoid flickering
                 m_phononWidget->hide();
                 m_phononWidget->hide();
+                m_preview->show();
+                m_preview->removeEventFilter(m_phononWidget);
+                m_phononWidget->clearUrl();
             }
         }
     } else {
             }
         }
     } else {
+        m_preview->stopAnimatedImage();
         m_preview->hide();
         m_phononWidget->hide();
     }
 }
 
         m_preview->hide();
         m_phononWidget->hide();
     }
 }
 
-void InformationPanelContent::refreshMetaData() {
-    if (m_metaDataWidget) {
-        m_metaDataWidget->setDateFormat(static_cast<Baloo::DateFormats>(InformationPanelSettings::dateFormat()));
-        m_metaDataWidget->show();
-        m_metaDataWidget->setItems(KFileItemList() << m_item);
-    }
+void InformationPanelContent::configureShownProperties()
+{
+    m_configureLabel->setVisible(true);
+    m_configureButtons->setVisible(true);
+    m_metaDataWidget->setConfigurationMode(Baloo::ConfigurationMode::ReStart);
+}
+
+void InformationPanelContent::refreshMetaData()
+{
+    m_metaDataWidget->setDateFormat(static_cast<Baloo::DateFormats>(InformationPanelSettings::dateFormat()));
+    m_metaDataWidget->show();
+    m_metaDataWidget->setItems(KFileItemList() << m_item);
 }
 
 }
 
-void InformationPanelContent::showItems(const KFileItemList& items)
+void InformationPanelContent::showItems(const KFileItemList &items)
 {
     // If there is a preview job, kill it to prevent that we have jobs for
     // multiple items running, and thus a race condition (bug 250787).
 {
     // If there is a preview job, kill it to prevent that we have jobs for
     // multiple items running, and thus a race condition (bug 250787).
@@ -225,25 +279,23 @@ void InformationPanelContent::showItems(const KFileItemList& items)
         m_previewJob->kill();
     }
 
         m_previewJob->kill();
     }
 
-    m_preview->setPixmap(
-        QIcon::fromTheme(QStringLiteral("dialog-information")).pixmap(KIconLoader::SizeEnormous, KIconLoader::SizeEnormous)
-    );
+    m_preview->stopAnimatedImage();
+
+    m_preview->setPixmap(QIcon::fromTheme(QStringLiteral("dialog-information")).pixmap(m_preview->height(), m_preview->width()));
     setNameLabelText(i18ncp("@label", "%1 item selected", "%1 items selected", items.count()));
 
     setNameLabelText(i18ncp("@label", "%1 item selected", "%1 items selected", items.count()));
 
-    if (m_metaDataWidget) {
-        m_metaDataWidget->setItems(items);
-    }
+    m_metaDataWidget->setItems(items);
 
     m_phononWidget->hide();
 
     m_item = KFileItem();
 }
 
 
     m_phononWidget->hide();
 
     m_item = KFileItem();
 }
 
-bool InformationPanelContent::eventFilter(QObject* obj, QEvent* event)
+bool InformationPanelContent::eventFilter(QObject *obj, QEvent *event)
 {
     switch (event->type()) {
     case QEvent::Resize: {
 {
     switch (event->type()) {
     case QEvent::Resize: {
-        QResizeEvent* resizeEvent = static_cast<QResizeEvent*>(event);
+        QResizeEvent *resizeEvent = static_cast<QResizeEvent *>(event);
         if (obj == m_metaDataArea->viewport()) {
             // The size of the meta text area has changed. Adjust the fixed
             // width in a way that no horizontal scrollbar needs to be shown.
         if (obj == m_metaDataArea->viewport()) {
             // The size of the meta text area has changed. Adjust the fixed
             // width in a way that no horizontal scrollbar needs to be shown.
@@ -269,44 +321,123 @@ bool InformationPanelContent::eventFilter(QObject* obj, QEvent* event)
     return QWidget::eventFilter(obj, event);
 }
 
     return QWidget::eventFilter(obj, event);
 }
 
-void InformationPanelContent::showIcon(const KFileItem& item)
+bool InformationPanelContent::event(QEvent *event)
+{
+    if (event->type() == QEvent::Gesture) {
+        gestureEvent(static_cast<QGestureEvent *>(event));
+        return true;
+    }
+    return QWidget::event(event);
+}
+
+bool InformationPanelContent::gestureEvent(QGestureEvent *event)
+{
+    if (!underMouse()) {
+        return false;
+    }
+
+    QTapAndHoldGesture *tap = static_cast<QTapAndHoldGesture *>(event->gesture(Qt::TapAndHoldGesture));
+
+    if (tap) {
+        if (tap->state() == Qt::GestureFinished) {
+            Q_EMIT contextMenuRequested(tap->position().toPoint());
+        }
+        event->accept();
+        return true;
+    }
+    return false;
+}
+
+void InformationPanelContent::showIcon(const KFileItem &item)
 {
     m_outdatedPreviewTimer->stop();
 {
     m_outdatedPreviewTimer->stop();
-    QPixmap pixmap = QIcon::fromTheme(item.iconName()).pixmap(KIconLoader::SizeEnormous, KIconLoader::SizeEnormous);
+    QPixmap pixmap = QIcon::fromTheme(item.iconName()).pixmap(m_preview->height(), m_preview->width());
     KIconLoader::global()->drawOverlays(item.overlays(), pixmap, KIconLoader::Desktop);
     m_preview->setPixmap(pixmap);
 }
 
     KIconLoader::global()->drawOverlays(item.overlays(), pixmap, KIconLoader::Desktop);
     m_preview->setPixmap(pixmap);
 }
 
-void InformationPanelContent::showPreview(const KFileItem& item,
-                                          const QPixmap& pixmap)
+void InformationPanelContent::showPreview(const KFileItem &item, const QPixmap &pixmap)
 {
     m_outdatedPreviewTimer->stop();
 {
     m_outdatedPreviewTimer->stop();
-    Q_UNUSED(item);
 
     QPixmap p = pixmap;
     KIconLoader::global()->drawOverlays(item.overlays(), p, KIconLoader::Desktop);
 
     QPixmap p = pixmap;
     KIconLoader::global()->drawOverlays(item.overlays(), p, KIconLoader::Desktop);
+
+    if (m_isVideo) {
+        // adds a play arrow overlay
+
+        auto maxDim = qMax(p.width(), p.height());
+        auto arrowSize = qMax(PLAY_ARROW_SIZE, maxDim / 8);
+
+        // compute relative pixel positions
+        const int zeroX = static_cast<int>((p.width() / 2 - arrowSize / 2) / pixmap.devicePixelRatio());
+        const int zeroY = static_cast<int>((p.height() / 2 - arrowSize / 2) / pixmap.devicePixelRatio());
+
+        QPolygon arrow;
+        arrow << QPoint(zeroX, zeroY);
+        arrow << QPoint(zeroX, zeroY + arrowSize);
+        arrow << QPoint(zeroX + arrowSize, zeroY + arrowSize / 2);
+
+        QPainterPath path;
+        path.addPolygon(arrow);
+
+        QLinearGradient gradient(QPointF(zeroX, zeroY + arrowSize / 2), QPointF(zeroX + arrowSize, zeroY + arrowSize / 2));
+
+        QColor whiteColor = Qt::white;
+        QColor blackColor = Qt::black;
+        gradient.setColorAt(0, whiteColor);
+        gradient.setColorAt(1, blackColor);
+
+        QBrush brush(gradient);
+
+        QPainter painter(&p);
+
+        QPen pen(blackColor, PLAY_ARROW_BORDER_SIZE, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin);
+        painter.setPen(pen);
+
+        painter.setRenderHint(QPainter::Antialiasing);
+        painter.drawPolygon(arrow);
+        painter.fillPath(path, brush);
+    }
+
     m_preview->setPixmap(p);
 }
 
 void InformationPanelContent::markOutdatedPreview()
 {
     m_preview->setPixmap(p);
 }
 
 void InformationPanelContent::markOutdatedPreview()
 {
-    KIconEffect *iconEffect = KIconLoader::global()->iconEffect();
-    QPixmap disabledPixmap = iconEffect->apply(m_preview->pixmap(),
-                                               KIconLoader::Desktop,
-                                               KIconLoader::DisabledState);
-    m_preview->setPixmap(disabledPixmap);
+    if (m_item.isDir()) {
+        // directory preview can be long
+        // but since we always have icons to display
+        // use it until the preview is done
+        showIcon(m_item);
+    } else {
+        KIconEffect *iconEffect = KIconLoader::global()->iconEffect();
+        QPixmap disabledPixmap = iconEffect->apply(m_preview->pixmap(), KIconLoader::Desktop, KIconLoader::DisabledState);
+        m_preview->setPixmap(disabledPixmap);
+    }
 }
 
 }
 
-KFileItemList InformationPanelContent::items() {
+KFileItemList InformationPanelContent::items()
+{
     return m_metaDataWidget->items();
 }
 
 void InformationPanelContent::slotHasVideoChanged(bool hasVideo)
 {
     m_preview->setVisible(InformationPanelSettings::previewsShown() && !hasVideo);
     return m_metaDataWidget->items();
 }
 
 void InformationPanelContent::slotHasVideoChanged(bool hasVideo)
 {
     m_preview->setVisible(InformationPanelSettings::previewsShown() && !hasVideo);
+    if (m_preview->isVisible() && m_preview->size().width() != m_preview->pixmap().size().width()) {
+        // in case the information panel has been resized when the preview was not displayed
+        // we need to refresh its content
+        refreshPixmapView();
+    }
 }
 
 }
 
-void InformationPanelContent::setNameLabelText(const QString& text)
+void InformationPanelContent::setPreviewAutoPlay(bool autoPlay)
+{
+    m_phononWidget->setAutoPlay(autoPlay);
+}
+
+void InformationPanelContent::setNameLabelText(const QString &text)
 {
     QTextOption textOption;
     textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
 {
     QTextOption textOption;
     textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
@@ -325,7 +456,7 @@ void InformationPanelContent::setNameLabelText(const QString& text)
     QTextLine line = textLayout.createLine();
     while (line.isValid()) {
         line.setLineWidth(m_nameLabel->width());
     QTextLine line = textLayout.createLine();
     while (line.isValid()) {
         line.setLineWidth(m_nameLabel->width());
-        wrappedText += processedText.midRef(line.textStart(), line.textLength());
+        wrappedText += QStringView(processedText).mid(line.textStart(), line.textLength());
 
         line = textLayout.createLine();
         if (line.isValid()) {
 
         line = textLayout.createLine();
         if (line.isValid()) {
@@ -349,9 +480,7 @@ void InformationPanelContent::adjustWidgetSizes(int width)
 
     // The metadata widget also contains a text widget which may return
     // a large preferred width.
 
     // The metadata widget also contains a text widget which may return
     // a large preferred width.
-    if (m_metaDataWidget) {
-        m_metaDataWidget->setMaximumWidth(maxWidth);
-    }
+    m_metaDataWidget->setMaximumWidth(maxWidth);
 
     // try to increase the preview as large as possible
     m_preview->setSizeHint(QSize(maxWidth, maxWidth));
 
     // try to increase the preview as large as possible
     m_preview->setSizeHint(QSize(maxWidth, maxWidth));
@@ -362,3 +491,4 @@ void InformationPanelContent::adjustWidgetSizes(int width)
     }
 }
 
     }
 }
 
+#include "moc_informationpanelcontent.cpp"