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[dolphin.git] / src / panels / information / informationpanelcontent.cpp
index dfa88be17f8b871d127cf41609eaeb6a4e9879be..04e13060d23501afd2675a49a3743469256ca093 100644 (file)
 
 #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 <kfilemetadatawidget.h>
+#include <KFilePlacesModel>
+#include <KGlobalSettings>
+#include <KIO/PreviewJob>
+#include <KIconEffect>
+#include <KIconLoader>
+#include <KLocale>
+#include <KMenu>
 #include <kseparator.h>
+#include <KStringHandler>
 
 #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 "filemetadataconfigurationdialog.h"
 #include "settings/dolphinsettings.h"
-#include "metadatawidget.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_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_enabledPlugins()
 {
     parent->installEventFilter(this);
 
@@ -84,18 +77,9 @@ InformationPanelContent::InformationPanelContent(QWidget* parent) :
     connect(m_outdatedPreviewTimer, SIGNAL(timeout()),
             this, SLOT(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;
 
@@ -104,20 +88,28 @@ 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()));
 
-    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->setAlignment(Qt::AlignHCenter);
+    m_nameLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
 
     const bool showPreview = InformationPanelSettings::showPreview();
     m_preview->setVisible(showPreview);
-    m_previewSeparator->setVisible(showPreview);
 
-    m_metaDataWidget = new MetaDataWidget(parent);
+    m_metaDataWidget = new KFileMetaDataWidget(parent);
+    m_metaDataWidget->setFont(KGlobalSettings::smallestReadableFont());
     m_metaDataWidget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Minimum);
+    connect(m_metaDataWidget, SIGNAL(urlActivated(KUrl)), this, SIGNAL(urlActivated(KUrl)));
 
     // Encapsulate the MetaDataWidget inside a container that has a dummy widget
     // at the bottom. This prevents that the meta data widget gets vertically stretched
@@ -127,9 +119,7 @@ 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);
@@ -143,13 +133,11 @@ 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);
 }
 
 InformationPanelContent::~InformationPanelContent()
@@ -162,37 +150,51 @@ void InformationPanelContent::showItem(const KFileItem& item)
     m_pendingPreview = false;
 
     const KUrl itemUrl = item.url();
+    const bool isSearchUrl = itemUrl.protocol().contains("search") && item.nepomukUri().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();
-        }
+        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...
+            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);
+            if (m_enabledPlugins.isEmpty()) {
+                const KConfigGroup globalConfig(KGlobal::config(), "PreviewSettings");
+                m_enabledPlugins = globalConfig.readEntry("Plugins", QStringList()
+                                                                     << "directorythumbnail"
+                                                                     << "imagethumbnail"
+                                                                     << "jpegthumbnail");
+            }
 
-        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&)));
+            KIO::PreviewJob* job = KIO::filePreview(KFileItemList() << item, m_preview->width(), m_preview->height(),
+                                                    0, 0, false, true, &m_enabledPlugins);
 
-        setNameLabelText(itemUrl.fileName());
+            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&)));
+        }
     }
 
     if (m_metaDataWidget != 0) {
-        m_metaDataWidget->setItem(item);
+        m_metaDataWidget->show();
+        m_metaDataWidget->setItems(KFileItemList() << item);
     }
 
     if (InformationPanelSettings::showPreview()) {
@@ -206,7 +208,7 @@ void InformationPanelContent::showItem(const KFileItem& item)
                                       ? PhononWidget::Video
                                       : PhononWidget::Audio;
             m_phononWidget->setMode(mode);
-            m_phononWidget->setUrl(item.url());
+            m_phononWidget->setUrl(item.targetUrl());
             if ((mode == PhononWidget::Video) && m_preview->isVisible()) {
                 m_phononWidget->setVideoSize(m_preview->size());
             }
@@ -243,46 +245,32 @@ 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"));
@@ -293,6 +281,11 @@ void InformationPanelContent::configureSettings()
     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());
@@ -303,26 +296,31 @@ void InformationPanelContent::configureSettings()
     const bool isChecked = action->isChecked();
     if (action == previewAction) {
         m_preview->setVisible(isChecked);
-        m_previewSeparator->setVisible(isChecked);
         InformationPanelSettings::setShowPreview(isChecked);
     } else if (action == configureAction) {
-        m_metaDataWidget->openConfigurationDialog();
+        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, SIGNAL(destroyed()), this, SLOT(refreshMetaData()));
     }
-
-    showItem(m_item);
 }
 
 void InformationPanelContent::showIcon(const KFileItem& item)
 {
     m_outdatedPreviewTimer->stop();
     m_pendingPreview = false;
-    if (!applyPlace(item.url())) {
+    if (!applyPlace(item.targetUrl())) {
         m_preview->setPixmap(item.pixmap(KIconLoader::SizeEnormous));
     }
 }
 
 void InformationPanelContent::showPreview(const KFileItem& item,
-                                  const QPixmap& pixmap)
+                                          const QPixmap& pixmap)
 {
     m_outdatedPreviewTimer->stop();
 
@@ -335,10 +333,10 @@ void InformationPanelContent::showPreview(const KFileItem& item,
 
 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);
 }
 
@@ -352,6 +350,13 @@ void InformationPanelContent::slotPlayingStopped()
     m_preview->setVisible(true);
 }
 
+void InformationPanelContent::refreshMetaData()
+{
+    if (!m_item.isNull() && m_item.nepomukUri().isValid()) {
+        showItem(m_item);
+    }
+}
+
 bool InformationPanelContent::applyPlace(const KUrl& url)
 {
     KFilePlacesModel* placesModel = DolphinSettings::instance().placesModel();
@@ -375,19 +380,21 @@ 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()) {
@@ -399,4 +406,29 @@ 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 != 0) {
+        m_metaDataWidget->setMaximumWidth(maxWidth);
+    }
+
+    // try to increase the preview as large as possible
+    m_preview->setSizeHint(QSize(maxWidth, maxWidth));
+
+    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));
+    }
+}
+
 #include "informationpanelcontent.moc"