]> cloud.milkyroute.net Git - dolphin.git/blobdiff - src/panels/information/informationpanelcontent.cpp
dolphin: convert panels/ and filterbar to qt signal/slot syntax
[dolphin.git] / src / panels / information / informationpanelcontent.cpp
index b47ee78400b4df533ef1edf9d408928e410ab1ea..74f0ae9352a271f558d24337ad8ec452c2fb157d 100644 (file)
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2009 by Peter Penz <peter.penz@gmx.at>                  *
+ *   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  *
 
 #include "informationpanelcontent.h"
 
-#include <config-nepomuk.h>
-
-#include <kdialog.h>
-#include <kfileitem.h>
-#include <kfileplacesmodel.h>
-#include <kio/previewjob.h>
-#include <kiconeffect.h>
-#include <kiconloader.h>
-#include <klocale.h>
-#include <kmenu.h>
+#include <KDialog>
+#include <KFileItem>
+#include <KGlobalSettings>
+#include <KIO/JobUiDelegate>
+#include <KIO/PreviewJob>
+#include <KJobWidgets>
+#include <KIconEffect>
+#include <KIconLoader>
+#include <KIcon>
+#include <KLocale>
+#include <KMenu>
 #include <kseparator.h>
+#include <KStringHandler>
+
+#ifndef HAVE_BALOO
+#include <KFileMetaDataWidget>
+#else
+#include <baloo/filemetadatawidget.h>
+#endif
+
+#include <panels/places/placesitem.h>
+#include <panels/places/placesitemmodel.h>
 
 #include <Phonon/BackendCapabilities>
 #include <Phonon/MediaObject>
 #include <QEvent>
 #include <QLabel>
 #include <QPixmap>
+#include <QPointer>
 #include <QResizeEvent>
 #include <QScrollArea>
+#include <QTextDocument>
 #include <QTextLayout>
 #include <QTextLine>
 #include <QTimer>
 #include <QVBoxLayout>
 
 #include "dolphin_informationpanelsettings.h"
-#include "settings/dolphinsettings.h"
-#include "metadatawidget.h"
-#include "metadataconfigurationdialog.h"
+#include "filemetadataconfigurationdialog.h"
 #include "phononwidget.h"
 #include "pixmapviewer.h"
 
-/**
- * Helper function for sorting items with qSort() in
- * InformationPanelContent::contextMenu().
- */
-bool lessThan(const QAction* action1, const QAction* action2)
-{
-    return action1->text() < action2->text();
-}
-
-
 InformationPanelContent::InformationPanelContent(QWidget* parent) :
-    Panel(parent),
+    QWidget(parent),
     m_item(),
-    m_pendingPreview(false),
+    m_previewJob(0),
     m_outdatedPreviewTimer(0),
-    m_nameLabel(0),
     m_preview(0),
-    m_previewSeparator(0),
     m_phononWidget(0),
+    m_nameLabel(0),
     m_metaDataWidget(0),
-    m_metaDataArea(0)
+    m_metaDataArea(0),
+    m_placesItemModel(0)
 {
     parent->installEventFilter(this);
 
@@ -82,21 +83,12 @@ InformationPanelContent::InformationPanelContent(QWidget* parent) :
     m_outdatedPreviewTimer = new QTimer(this);
     m_outdatedPreviewTimer->setInterval(300);
     m_outdatedPreviewTimer->setSingleShot(true);
-    connect(m_outdatedPreviewTimer, SIGNAL(timeout()),
-            this, SLOT(markOutdatedPreview()));
+    connect(m_outdatedPreviewTimer, &QTimer::timeout,
+            this, &InformationPanelContent::markOutdatedPreview);
 
-    QVBoxLayout* layout = new QVBoxLayout;
+    QVBoxLayout* layout = new QVBoxLayout(this);
     layout->setSpacing(KDialog::spacingHint());
 
-    // name
-    m_nameLabel = new QLabel(parent);
-    QFont font = m_nameLabel->font();
-    font.setBold(true);
-    m_nameLabel->setFont(font);
-    m_nameLabel->setAlignment(Qt::AlignHCenter);
-    m_nameLabel->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
-    m_nameLabel->setMaximumWidth(KIconLoader::SizeEnormous);
-
     // preview
     const int minPreviewWidth = KIconLoader::SizeEnormous + KIconLoader::SizeMedium;
 
@@ -105,20 +97,31 @@ InformationPanelContent::InformationPanelContent(QWidget* parent) :
     m_preview->setMinimumHeight(KIconLoader::SizeEnormous);
 
     m_phononWidget = new PhononWidget(parent);
+    m_phononWidget->hide();
     m_phononWidget->setMinimumWidth(minPreviewWidth);
-    connect(m_phononWidget, SIGNAL(playingStarted()),
-            this, SLOT(slotPlayingStarted()));
-    connect(m_phononWidget, SIGNAL(playingStopped()),
-            this, SLOT(slotPlayingStopped()));
+    connect(m_phononWidget, &PhononWidget::hasVideoChanged,
+            this, &InformationPanelContent::slotHasVideoChanged);
 
-    m_previewSeparator = new KSeparator(parent);
+    // name
+    m_nameLabel = new QLabel(parent);
+    QFont font = m_nameLabel->font();
+    font.setBold(true);
+    m_nameLabel->setFont(font);
+    m_nameLabel->setTextFormat(Qt::PlainText);
+    m_nameLabel->setAlignment(Qt::AlignHCenter);
+    m_nameLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
 
-    const bool showPreview = InformationPanelSettings::showPreview();
-    m_preview->setVisible(showPreview);
-    m_previewSeparator->setVisible(showPreview);
+    const bool previewsShown = InformationPanelSettings::previewsShown();
+    m_preview->setVisible(previewsShown);
 
-    m_metaDataWidget = new MetaDataWidget(parent);
+#ifndef HAVE_BALOO
+    m_metaDataWidget = new KFileMetaDataWidget(parent);
+#else
+    m_metaDataWidget = new Baloo::FileMetaDataWidget(parent);
+#endif
+    m_metaDataWidget->setFont(KGlobalSettings::smallestReadableFont());
     m_metaDataWidget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Minimum);
+    connect(m_metaDataWidget, &KFileMetaDataWidget::urlActivated, this, &InformationPanelContent::urlActivated);
 
     // Encapsulate the MetaDataWidget inside a container that has a dummy widget
     // at the bottom. This prevents that the meta data widget gets vertically stretched
@@ -128,9 +131,7 @@ InformationPanelContent::InformationPanelContent(QWidget* parent) :
     containerLayout->setContentsMargins(0, 0, 0, 0);
     containerLayout->setSpacing(0);
     containerLayout->addWidget(m_metaDataWidget);
-    QWidget* stretchWidget = new QWidget(metaDataWidgetContainer);
-    stretchWidget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::MinimumExpanding);
-    containerLayout->addWidget(stretchWidget);
+    containerLayout->addStretch();
 
     m_metaDataArea = new QScrollArea(parent);
     m_metaDataArea->setWidget(metaDataWidgetContainer);
@@ -144,13 +145,13 @@ InformationPanelContent::InformationPanelContent(QWidget* parent) :
     palette.setColor(viewport->backgroundRole(), QColor(Qt::transparent));
     viewport->setPalette(palette);
 
-    layout->addWidget(m_nameLabel);
-    layout->addWidget(new KSeparator(this));
     layout->addWidget(m_preview);
     layout->addWidget(m_phononWidget);
-    layout->addWidget(m_previewSeparator);
+    layout->addWidget(m_nameLabel);
+    layout->addWidget(new KSeparator());
     layout->addWidget(m_metaDataArea);
-    parent->setLayout(layout);
+
+    m_placesItemModel = new PlacesItemModel(this);
 }
 
 InformationPanelContent::~InformationPanelContent()
@@ -160,55 +161,62 @@ InformationPanelContent::~InformationPanelContent()
 
 void InformationPanelContent::showItem(const KFileItem& item)
 {
-    m_pendingPreview = false;
+    // 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();
+    }
 
     const KUrl itemUrl = item.url();
+    const bool isSearchUrl = itemUrl.protocol().contains("search") && item.localPath().isEmpty();
     if (!applyPlace(itemUrl)) {
-        // try to get a preview pixmap from the item...
-        m_pendingPreview = true;
-
-        // 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 (!item.isDir()) {
-            m_outdatedPreviewTimer->start();
-        }
-
-        KIO::PreviewJob* job = KIO::filePreview(KFileItemList() << item,
-                                                m_preview->width(),
-                                                m_preview->height(),
-                                                0,
-                                                0,
-                                                false,
-                                                true);
+        setNameLabelText(item.text());
+        if (isSearchUrl) {
+            // in the case of a search-URL the URL is not readable for humans
+            // (at least not useful to show in the Information Panel)
+            KIconLoader iconLoader;
+            QPixmap icon = iconLoader.loadIcon("nepomuk",
+                                               KIconLoader::NoGroup,
+                                               KIconLoader::SizeEnormous);
+            m_preview->setPixmap(icon);
+        } 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 (!item.isDir()) {
+                m_outdatedPreviewTimer->start();
+            }
 
-        connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
-                this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
-        connect(job, SIGNAL(failed(const KFileItem&)),
-                this, SLOT(showIcon(const KFileItem&)));
+            m_previewJob = new KIO::PreviewJob(KFileItemList() << item, QSize(m_preview->width(), m_preview->height()));
+            m_previewJob->setScaleType(KIO::PreviewJob::Unscaled);
+            m_previewJob->setIgnoreMaximumSize(item.isLocalFile());
+            if (m_previewJob->ui()) {
+                KJobWidgets::setWindow(m_previewJob, this);
+            }
 
-        setNameLabelText(itemUrl.fileName());
+            connect(m_previewJob.data(), &KIO::PreviewJob::gotPreview,
+                    this, &InformationPanelContent::showPreview);
+            connect(m_previewJob.data(), &KIO::PreviewJob::failed,
+                    this, &InformationPanelContent::showIcon);
+        }
     }
 
-    if (m_metaDataWidget != 0) {
-        m_metaDataWidget->setItem(item);
+    if (m_metaDataWidget) {
+        m_metaDataWidget->show();
+        m_metaDataWidget->setItems(KFileItemList() << item);
     }
 
-    if (InformationPanelSettings::showPreview()) {
+    if (InformationPanelSettings::previewsShown()) {
         const QString mimeType = item.mimetype();
-        const bool usePhonon = Phonon::BackendCapabilities::isMimeTypeAvailable(mimeType) &&
-                               (mimeType != "image/png");  // TODO: workaround, as Phonon
-                                                           // thinks it supports PNG images
+        const bool usePhonon = mimeType.startsWith("audio/") || mimeType.startsWith("video/");
         if (usePhonon) {
             m_phononWidget->show();
-            PhononWidget::Mode mode = mimeType.startsWith(QLatin1String("video"))
-                                      ? PhononWidget::Video
-                                      : PhononWidget::Audio;
-            m_phononWidget->setMode(mode);
-            m_phononWidget->setUrl(item.url());
-            if ((mode == PhononWidget::Video) && m_preview->isVisible()) {
+            m_phononWidget->setUrl(item.targetUrl());
+            if (m_preview->isVisible()) {
                 m_phononWidget->setVideoSize(m_preview->size());
             }
         } else {
@@ -224,16 +232,20 @@ void InformationPanelContent::showItem(const KFileItem& item)
 
 void InformationPanelContent::showItems(const KFileItemList& items)
 {
-    m_pendingPreview = false;
+    // 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();
+    }
 
     KIconLoader iconLoader;
     QPixmap icon = iconLoader.loadIcon("dialog-information",
                                        KIconLoader::NoGroup,
                                        KIconLoader::SizeEnormous);
     m_preview->setPixmap(icon);
-    setNameLabelText(i18ncp("@info", "%1 item selected", "%1 items selected", items.count()));
+    setNameLabelText(i18ncp("@label", "%1 item selected", "%1 items selected", items.count()));
 
-    if (m_metaDataWidget != 0) {
+    if (m_metaDataWidget) {
         m_metaDataWidget->setItems(items);
     }
 
@@ -244,127 +256,120 @@ void InformationPanelContent::showItems(const KFileItemList& items)
 
 bool InformationPanelContent::eventFilter(QObject* obj, QEvent* event)
 {
-    if (event->type() == QEvent::Resize) {
+    switch (event->type()) {
+    case QEvent::Resize: {
         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.
             m_metaDataWidget->setFixedWidth(resizeEvent->size().width());
         } else if (obj == parent()) {
-            // If the text inside the name label or the info label cannot
-            // get wrapped, then the maximum width of the label is increased
-            // so that the width of the information panel gets increased.
-            // To prevent this, the maximum width is adjusted to
-            // the current width of the panel.
-            const int maxWidth = resizeEvent->size().width() - KDialog::spacingHint() * 4;
-            m_nameLabel->setMaximumWidth(maxWidth);
-
-            // The metadata widget also contains a text widget which may return
-            // a large preferred width.
-            if (m_metaDataWidget != 0) {
-                m_metaDataWidget->setMaximumWidth(maxWidth);
-            }
+            adjustWidgetSizes(resizeEvent->size().width());
+        }
+        break;
+    }
 
-            // try to increase the preview as large as possible
-            m_preview->setSizeHint(QSize(maxWidth, maxWidth));
+    case QEvent::Polish:
+        adjustWidgetSizes(parentWidget()->width());
+        break;
 
-            if (m_phononWidget->isVisible() && (m_phononWidget->mode() == PhononWidget::Video)) {
-                // assure that the size of the video player is the same as the preview size
-                m_phononWidget->setVideoSize(QSize(maxWidth, maxWidth));
-            }
-        }
+    default:
+        break;
     }
-    return Panel::eventFilter(obj, event);
+
+    return QWidget::eventFilter(obj, event);
 }
 
-void InformationPanelContent::configureSettings()
+void InformationPanelContent::configureSettings(const QList<QAction*>& customContextMenuActions)
 {
-    if (m_item.isNull() ||
-        !m_item.nepomukUri().isValid()) {
-        return;
-    }
-
     KMenu popup(this);
 
     QAction* previewAction = popup.addAction(i18nc("@action:inmenu", "Preview"));
-    previewAction->setIcon(KIcon("view-preview"));
+    previewAction->setIcon(QIcon::fromTheme("view-preview"));
     previewAction->setCheckable(true);
-    previewAction->setChecked(InformationPanelSettings::showPreview());
+    previewAction->setChecked(InformationPanelSettings::previewsShown());
 
     QAction* configureAction = popup.addAction(i18nc("@action:inmenu", "Configure..."));
     configureAction->setIcon(KIcon("configure"));
 
+    popup.addSeparator();
+    foreach (QAction* action, customContextMenuActions) {
+        popup.addAction(action);
+    }
+
     // Open the popup and adjust the settings for the
     // selected action.
     QAction* action = popup.exec(QCursor::pos());
-    if (action == 0) {
+    if (!action) {
         return;
     }
 
     const bool isChecked = action->isChecked();
     if (action == previewAction) {
         m_preview->setVisible(isChecked);
-        m_previewSeparator->setVisible(isChecked);
-        InformationPanelSettings::setShowPreview(isChecked);
+        InformationPanelSettings::setPreviewsShown(isChecked);
     } else if (action == configureAction) {
-        MetaDataConfigurationDialog dialog(m_metaDataWidget, this, Qt::Dialog);
-        dialog.exec();
+        FileMetaDataConfigurationDialog* dialog = new FileMetaDataConfigurationDialog();
+        dialog->setDescription(i18nc("@label::textbox",
+                                     "Select which data should be shown in the information panel:"));
+        dialog->setItems(m_metaDataWidget->items());
+        dialog->setAttribute(Qt::WA_DeleteOnClose);
+        dialog->show();
+        dialog->raise();
+        dialog->activateWindow();
+        connect(dialog, &FileMetaDataConfigurationDialog::destroyed, this, &InformationPanelContent::refreshMetaData);
     }
-
-    showItem(m_item);
 }
 
 void InformationPanelContent::showIcon(const KFileItem& item)
 {
     m_outdatedPreviewTimer->stop();
-    m_pendingPreview = false;
-    if (!applyPlace(item.url())) {
-        m_preview->setPixmap(item.pixmap(KIconLoader::SizeEnormous));
+    if (!applyPlace(item.targetUrl())) {
+        KIcon icon(item.iconName(), KIconLoader::global(), item.overlays());
+        m_preview->setPixmap(icon.pixmap(KIconLoader::SizeEnormous));
     }
 }
 
 void InformationPanelContent::showPreview(const KFileItem& item,
-                                  const QPixmap& pixmap)
+                                          const QPixmap& pixmap)
 {
     m_outdatedPreviewTimer->stop();
-
     Q_UNUSED(item);
-    if (m_pendingPreview) {
-        m_preview->setPixmap(pixmap);
-        m_pendingPreview = false;
-    }
+
+    QPixmap p = pixmap;
+    KIconLoader::global()->drawOverlays(item.overlays(), p, KIconLoader::Desktop);
+    m_preview->setPixmap(p);
 }
 
 void InformationPanelContent::markOutdatedPreview()
 {
-    KIconEffect iconEffect;
-    QPixmap disabledPixmap = iconEffect.apply(m_preview->pixmap(),
-                                              KIconLoader::Desktop,
-                                              KIconLoader::DisabledState);
+    KIconEffect *iconEffect = KIconLoader::global()->iconEffect();
+    QPixmap disabledPixmap = iconEffect->apply(m_preview->pixmap(),
+                                               KIconLoader::Desktop,
+                                               KIconLoader::DisabledState);
     m_preview->setPixmap(disabledPixmap);
 }
 
-void InformationPanelContent::slotPlayingStarted()
+void InformationPanelContent::slotHasVideoChanged(bool hasVideo)
 {
-    m_preview->setVisible(m_phononWidget->mode() != PhononWidget::Video);
+    m_preview->setVisible(!hasVideo);
 }
 
-void InformationPanelContent::slotPlayingStopped()
+void InformationPanelContent::refreshMetaData()
 {
-    m_preview->setVisible(true);
+    if (!m_item.isNull()) {
+        showItem(m_item);
+    }
 }
 
 bool InformationPanelContent::applyPlace(const KUrl& url)
 {
-    KFilePlacesModel* placesModel = DolphinSettings::instance().placesModel();
-    int count = placesModel->rowCount();
-
+    const int count = m_placesItemModel->count();
     for (int i = 0; i < count; ++i) {
-        QModelIndex index = placesModel->index(i, 0);
-
-        if (url.equals(placesModel->url(index), KUrl::CompareWithoutTrailingSlash)) {
-            setNameLabelText(placesModel->text(index));
-            m_preview->setPixmap(placesModel->icon(index).pixmap(128, 128));
+        const PlacesItem* item = m_placesItemModel->placesItem(i);
+        if (item->url().equals(url, KUrl::CompareWithoutTrailingSlash)) {
+            setNameLabelText(item->text());
+            m_preview->setPixmap(KIcon(item->icon()).pixmap(128, 128));
             return true;
         }
     }
@@ -377,19 +382,21 @@ void InformationPanelContent::setNameLabelText(const QString& text)
     QTextOption textOption;
     textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
 
-    QTextLayout textLayout(text);
+    const QString processedText = Qt::mightBeRichText(text) ? text : KStringHandler::preProcessWrap(text);
+
+    QTextLayout textLayout(processedText);
     textLayout.setFont(m_nameLabel->font());
     textLayout.setTextOption(textOption);
 
     QString wrappedText;
-    wrappedText.reserve(text.length());
+    wrappedText.reserve(processedText.length());
 
     // wrap the text to fit into the width of m_nameLabel
     textLayout.beginLayout();
     QTextLine line = textLayout.createLine();
     while (line.isValid()) {
         line.setLineWidth(m_nameLabel->width());
-        wrappedText += text.mid(line.textStart(), line.textLength());
+        wrappedText += processedText.mid(line.textStart(), line.textLength());
 
         line = textLayout.createLine();
         if (line.isValid()) {
@@ -401,4 +408,29 @@ void InformationPanelContent::setNameLabelText(const QString& text)
     m_nameLabel->setText(wrappedText);
 }
 
+void InformationPanelContent::adjustWidgetSizes(int width)
+{
+    // If the text inside the name label or the info label cannot
+    // get wrapped, then the maximum width of the label is increased
+    // so that the width of the information panel gets increased.
+    // To prevent this, the maximum width is adjusted to
+    // the current width of the panel.
+    const int maxWidth = width - KDialog::spacingHint() * 4;
+    m_nameLabel->setMaximumWidth(maxWidth);
+
+    // The metadata widget also contains a text widget which may return
+    // a large preferred width.
+    if (m_metaDataWidget) {
+        m_metaDataWidget->setMaximumWidth(maxWidth);
+    }
+
+    // try to increase the preview as large as possible
+    m_preview->setSizeHint(QSize(maxWidth, maxWidth));
+
+    if (m_phononWidget->isVisible()) {
+        // assure that the size of the video player is the same as the preview size
+        m_phononWidget->setVideoSize(QSize(maxWidth, maxWidth));
+    }
+}
+
 #include "informationpanelcontent.moc"