src/panels/information/informationpanel.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz <peter.penz@gmx.at>                  *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "informationpanel.h"
  21
  22 #include <config-nepomuk.h>
  23
  24 #include <kdialog.h>
  25 #include <kdirnotify.h>
  26 #include <kfileitem.h>
  27 #include <kfilemetainfo.h>
  28 #include <kfileplacesmodel.h>
  29 #include <kglobalsettings.h>
  30 #include <kio/previewjob.h>
  31 #include <kiconeffect.h>
  32 #include <kiconloader.h>
  33 #include <klocale.h>
  34 #include <kmenu.h>
  35 #include <kseparator.h>
  36
  37 #ifdef HAVE_NEPOMUK
  38 #include <Nepomuk/Resource>
  39 #include <Nepomuk/Types/Property>
  40 #include <Nepomuk/Variant>
  41 #endif
  42
  43 #include <Phonon/BackendCapabilities>
  44 #include <Phonon/MediaObject>
  45 #include <Phonon/SeekSlider>
  46
  47 #include <QEvent>
  48 #include <QInputDialog>
  49 #include <QLabel>
  50 #include <QPainter>
  51 #include <QPixmap>
  52 #include <QResizeEvent>
  53 #include <QScrollArea>
  54 #include <QTextLayout>
  55 #include <QTextLine>
  56 #include <QTimer>
  57 #include <QScrollBar>
  58 #include <QVBoxLayout>
  59
  60 #include "settings/dolphinsettings.h"
  61 #include "metadatawidget.h"
  62 #include "metatextlabel.h"
  63 #include "phononwidget.h"
  64 #include "pixmapviewer.h"
  65
  66 /**
  67  * Helper function for sorting items with qSort() in
  68  * InformationPanel::contextMenu().
  69  */
  70 bool lessThan(const QAction* action1, const QAction* action2)
  71 {
  72     return action1->text() < action2->text();
  73 }
  74
  75
  76 InformationPanel::InformationPanel(QWidget* parent) :
  77     Panel(parent),
  78     m_initialized(false),
  79     m_pendingPreview(false),
  80     m_infoTimer(0),
  81     m_outdatedPreviewTimer(0),
  82     m_shownUrl(),
  83     m_urlCandidate(),
  84     m_fileItem(),
  85     m_selection(),
  86     m_nameLabel(0),
  87     m_preview(0),
  88     m_phononWidget(0),
  89     m_metaDataWidget(0),
  90     m_metaTextArea(0),
  91     m_metaTextLabel(0)
  92 {
  93 }
  94
  95 InformationPanel::~InformationPanel()
  96 {
  97 }
  98
  99 QSize InformationPanel::sizeHint() const
 100 {
 101     QSize size = Panel::sizeHint();
 102     size.setWidth(minimumSizeHint().width());
 103     return size;
 104 }
 105
 106 void InformationPanel::setUrl(const KUrl& url)
 107 {
 108     Panel::setUrl(url);
 109     if (url.isValid() && !isEqualToShownUrl(url)) {
 110         if (isVisible()) {
 111             cancelRequest();
 112             m_shownUrl = url;
 113             showItemInfo();
 114         } else {
 115             m_shownUrl = url;
 116         }
 117     }
 118 }
 119
 120 void InformationPanel::setSelection(const KFileItemList& selection)
 121 {
 122     if (!isVisible()) {
 123         return;
 124     }
 125
 126     if ((selection.count() == 0) && (m_selection.count() == 0)) {
 127         // The selection has not really changed, only the current index.
 128         // QItemSelectionModel emits a signal in this case and it is less
 129         // expensive doing the check this way instead of patching
 130         // DolphinView::emitSelectionChanged().
 131         return;
 132     }
 133
 134     m_selection = selection;
 135
 136     const int count = selection.count();
 137     if (count == 0) {
 138         if (!isEqualToShownUrl(url())) {
 139             m_shownUrl = url();
 140             showItemInfo();
 141         }
 142     } else {
 143         if ((count == 1) && !selection.first().url().isEmpty()) {
 144             m_urlCandidate = selection.first().url();
 145         }
 146         m_infoTimer->start();
 147     }
 148 }
 149
 150 void InformationPanel::requestDelayedItemInfo(const KFileItem& item)
 151 {
 152     if (!isVisible()) {
 153         return;
 154     }
 155
 156     cancelRequest();
 157
 158     m_fileItem = KFileItem();
 159     if (item.isNull()) {
 160         // The cursor is above the viewport. If files are selected,
 161         // show information regarding the selection.
 162         if (m_selection.size() > 0) {
 163             m_pendingPreview = false;
 164             m_infoTimer->start();
 165         }
 166     } else {
 167         const KUrl url = item.url();
 168         if (url.isValid() && !isEqualToShownUrl(url)) {
 169             m_urlCandidate = item.url();
 170             m_fileItem = item;
 171             m_infoTimer->start();
 172         }
 173     }
 174 }
 175
 176 void InformationPanel::showEvent(QShowEvent* event)
 177 {
 178     Panel::showEvent(event);
 179     if (!event->spontaneous()) {
 180         if (!m_initialized) {
 181             // do a delayed initialization so that no performance
 182             // penalty is given when Dolphin is started with a closed
 183             // Information Panel
 184             init();
 185         }
 186         showItemInfo();
 187     }
 188 }
 189
 190 void InformationPanel::resizeEvent(QResizeEvent* event)
 191 {
 192     if (isVisible()) {
 193         // If the text inside the name label or the info label cannot
 194         // get wrapped, then the maximum width of the label is increased
 195         // so that the width of the information panel gets increased.
 196         // To prevent this, the maximum width is adjusted to
 197         // the current width of the panel.
 198         const int maxWidth = event->size().width() - KDialog::spacingHint() * 4;
 199         m_nameLabel->setMaximumWidth(maxWidth);
 200
 201         // try to increase the preview as large as possible
 202         m_preview->setSizeHint(QSize(maxWidth, maxWidth));
 203         m_urlCandidate = m_shownUrl; // reset the URL candidate if a resizing is done
 204         m_infoTimer->start();
 205     }
 206     Panel::resizeEvent(event);
 207 }
 208
 209 bool InformationPanel::eventFilter(QObject* obj, QEvent* event)
 210 {
 211     // Check whether the size of the meta text area has changed and adjust
 212     // the fixed width in a way that no horizontal scrollbar needs to be shown.
 213     if ((obj == m_metaTextArea->viewport()) && (event->type() == QEvent::Resize)) {
 214         QResizeEvent* resizeEvent = static_cast<QResizeEvent*>(event);
 215         m_metaTextLabel->setFixedWidth(resizeEvent->size().width());
 216     }
 217     return Panel::eventFilter(obj, event);
 218 }
 219
 220 void InformationPanel::contextMenuEvent(QContextMenuEvent* event)
 221 {
 222     Panel::contextMenuEvent(event);
 223
 224 #ifdef HAVE_NEPOMUK
 225     if (showMultipleSelectionInfo()) {
 226         return;
 227     }
 228
 229     KMenu popup(this);
 230     popup.addTitle(i18nc("@title:menu", "Shown Information"));
 231
 232     KConfig config("kmetainformationrc", KConfig::NoGlobals);
 233     KConfigGroup settings = config.group("Show");
 234     initMetaInfoSettings(settings);
 235
 236     QList<QAction*> actions;
 237
 238     // Get all meta information labels that are available for
 239     // the currently shown file item and add them to the popup.
 240     Nepomuk::Resource res(fileItem().url());
 241     QHash<QUrl, Nepomuk::Variant> properties = res.properties();
 242     QHash<QUrl, Nepomuk::Variant>::const_iterator it = properties.constBegin();
 243     while (it != properties.constEnd()) {
 244         Nepomuk::Types::Property prop(it.key());
 245         const QString key = prop.label();
 246
 247         // Meta information provided by Nepomuk that is already
 248         // available from KFileItem should not be configurable.
 249         bool skip = (key == "fileExtension") ||
 250                     (key == "name") ||
 251                     (key == "sourceModified") ||
 252                     (key == "size") ||
 253                     (key == "mime type");
 254         if (!skip) {
 255             // Check whether there is already a meta information
 256             // having the same label. In this case don't show it
 257             // twice in the menu.
 258             foreach (const QAction* action, actions) {
 259                 if (action->data().toString() == key) {
 260                     skip = true;
 261                     break;
 262                 }
 263             }
 264         }
 265
 266         if (!skip) {
 267             const QString label = key; // TODO
 268             QAction* action = new QAction(label, &popup);
 269             action->setCheckable(true);
 270             action->setChecked(settings.readEntry(key, true));
 271             action->setData(key);
 272             actions.append(action);
 273         }
 274
 275         ++it;
 276     }
 277
 278     if (actions.count() == 0) {
 279         return;
 280     }
 281
 282     // add all items alphabetically sorted to the popup
 283     qSort(actions.begin(), actions.end(), lessThan);
 284     foreach (QAction* action, actions) {
 285         popup.addAction(action);
 286     }
 287
 288     // Open the popup and adjust the settings for the
 289     // selected action.
 290     QAction* action = popup.exec(QCursor::pos());
 291     if (action != 0) {
 292         settings.writeEntry(action->data().toString(), action->isChecked());
 293         settings.sync();
 294         showMetaInfo();
 295     }
 296 #endif
 297 }
 298
 299 void InformationPanel::showItemInfo()
 300 {
 301     if (!isVisible()) {
 302         return;
 303     }
 304
 305     cancelRequest();
 306
 307     if (showMultipleSelectionInfo()) {
 308         KIconLoader iconLoader;
 309         QPixmap icon = iconLoader.loadIcon("dialog-information",
 310                                            KIconLoader::NoGroup,
 311                                            KIconLoader::SizeEnormous);
 312         m_preview->setPixmap(icon);
 313         setNameLabelText(i18ncp("@info", "%1 item selected", "%1 items selected",  m_selection.count()));
 314         m_shownUrl = KUrl();
 315     } else {
 316         const KFileItem item = fileItem();
 317         const KUrl itemUrl = item.url();
 318         if (!applyPlace(itemUrl)) {
 319             // try to get a preview pixmap from the item...
 320             m_pendingPreview = true;
 321
 322             // Mark the currently shown preview as outdated. This is done
 323             // with a small delay to prevent a flickering when the next preview
 324             // can be shown within a short timeframe.
 325             m_outdatedPreviewTimer->start();
 326
 327             KIO::PreviewJob* job = KIO::filePreview(KFileItemList() << item,
 328                                                     m_preview->width(),
 329                                                     m_preview->height(),
 330                                                     0,
 331                                                     0,
 332                                                     false,
 333                                                     true);
 334
 335             connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 336                     this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 337             connect(job, SIGNAL(failed(const KFileItem&)),
 338                     this, SLOT(showIcon(const KFileItem&)));
 339
 340             setNameLabelText(itemUrl.fileName());
 341         }
 342     }
 343
 344     showMetaInfo();
 345 }
 346
 347 void InformationPanel::slotInfoTimeout()
 348 {
 349     m_shownUrl = m_urlCandidate;
 350     showItemInfo();
 351 }
 352
 353 void InformationPanel::markOutdatedPreview()
 354 {
 355     KIconEffect iconEffect;
 356     QPixmap disabledPixmap = iconEffect.apply(m_preview->pixmap(),
 357                                               KIconLoader::Desktop,
 358                                               KIconLoader::DisabledState);
 359     m_preview->setPixmap(disabledPixmap);
 360 }
 361
 362 void InformationPanel::showIcon(const KFileItem& item)
 363 {
 364     m_outdatedPreviewTimer->stop();
 365     m_pendingPreview = false;
 366     if (!applyPlace(item.url())) {
 367         m_preview->setPixmap(item.pixmap(KIconLoader::SizeEnormous));
 368     }
 369 }
 370
 371 void InformationPanel::showPreview(const KFileItem& item,
 372                                   const QPixmap& pixmap)
 373 {
 374     m_outdatedPreviewTimer->stop();
 375
 376     Q_UNUSED(item);
 377     if (m_pendingPreview) {
 378         m_preview->setPixmap(pixmap);
 379         m_pendingPreview = false;
 380     }
 381 }
 382
 383 void InformationPanel::slotFileRenamed(const QString& source, const QString& dest)
 384 {
 385     const KUrl sourceUrl = KUrl(source);
 386
 387     // Verify whether the renamed item is selected. If this is the case, the
 388     // selection must be updated with the renamed item.
 389     bool isSelected = false;
 390     for (int i = m_selection.size() - 1; i >= 0; --i) {
 391         if (m_selection[i].url() == sourceUrl) {
 392             m_selection.removeAt(i);
 393             isSelected = true;
 394             break;
 395         }
 396     }
 397
 398     if ((m_shownUrl == sourceUrl) || isSelected) {
 399         m_shownUrl = KUrl(dest);
 400         m_fileItem = KFileItem(KFileItem::Unknown, KFileItem::Unknown, m_shownUrl);
 401         if (isSelected) {
 402             m_selection.append(m_fileItem);
 403         }
 404         showItemInfo();
 405     }
 406 }
 407
 408 void InformationPanel::slotFilesAdded(const QString& directory)
 409 {
 410     if (m_shownUrl == KUrl(directory)) {
 411         // If the 'trash' icon changes because the trash has been emptied or got filled,
 412         // the signal filesAdded("trash:/") will be emitted.
 413         KFileItem item(KFileItem::Unknown, KFileItem::Unknown, KUrl(directory));
 414         requestDelayedItemInfo(item);
 415     }
 416 }
 417
 418 void InformationPanel::slotFilesChanged(const QStringList& files)
 419 {
 420     foreach (const QString& fileName, files) {
 421         if (m_shownUrl == KUrl(fileName)) {
 422             showItemInfo();
 423             break;
 424         }
 425     }
 426 }
 427
 428 void InformationPanel::slotFilesRemoved(const QStringList& files)
 429 {
 430     foreach (const QString& fileName, files) {
 431         if (m_shownUrl == KUrl(fileName)) {
 432             // the currently shown item has been removed, show
 433             // the parent directory as fallback
 434             reset();
 435             break;
 436         }
 437     }
 438 }
 439
 440 void InformationPanel::slotEnteredDirectory(const QString& directory)
 441 {
 442     if (m_shownUrl == KUrl(directory)) {
 443         KFileItem item(KFileItem::Unknown, KFileItem::Unknown, KUrl(directory));
 444         requestDelayedItemInfo(item);
 445     }
 446 }
 447
 448 void InformationPanel::slotLeftDirectory(const QString& directory)
 449 {
 450     if (m_shownUrl == KUrl(directory)) {
 451         // The signal 'leftDirectory' is also emitted when a media
 452         // has been unmounted. In this case no directory change will be
 453         // done in Dolphin, but the Information Panel must be updated to
 454         // indicate an invalid directory.
 455         reset();
 456     }
 457 }
 458
 459 bool InformationPanel::applyPlace(const KUrl& url)
 460 {
 461     KFilePlacesModel* placesModel = DolphinSettings::instance().placesModel();
 462     int count = placesModel->rowCount();
 463
 464     for (int i = 0; i < count; ++i) {
 465         QModelIndex index = placesModel->index(i, 0);
 466
 467         if (url.equals(placesModel->url(index), KUrl::CompareWithoutTrailingSlash)) {
 468             setNameLabelText(placesModel->text(index));
 469             m_preview->setPixmap(placesModel->icon(index).pixmap(128, 128));
 470             return true;
 471         }
 472     }
 473
 474     return false;
 475 }
 476
 477 void InformationPanel::cancelRequest()
 478 {
 479     m_infoTimer->stop();
 480 }
 481
 482 void InformationPanel::showMetaInfo()
 483 {
 484     m_metaTextLabel->clear();
 485
 486     if (showMultipleSelectionInfo()) {
 487         if (m_metaDataWidget != 0) {
 488             KUrl::List urls;
 489             foreach (const KFileItem& item, m_selection) {
 490                 urls.append(item.targetUrl());
 491             }
 492             m_metaDataWidget->setFiles(urls);
 493         }
 494
 495         quint64 totalSize = 0;
 496         foreach (const KFileItem& item, m_selection) {
 497             // Only count the size of files, not dirs to match what
 498             // DolphinViewContainer::selectionStatusBarText() does.
 499             if (!item.isDir() && !item.isLink()) {
 500                 totalSize += item.size();
 501             }
 502         }
 503         m_metaTextLabel->add(i18nc("@label", "Total size:"), KIO::convertSize(totalSize));
 504
 505         delete m_phononWidget;
 506         m_phononWidget = 0;
 507     } else {
 508         const KFileItem item = fileItem();
 509         if (item.isDir()) {
 510             m_metaTextLabel->add(i18nc("@label", "Type:"), i18nc("@label", "Folder"));
 511             m_metaTextLabel->add(i18nc("@label", "Modified:"), item.timeString());
 512         } else {
 513             m_metaTextLabel->add(i18nc("@label", "Type:"), item.mimeComment());
 514
 515             m_metaTextLabel->add(i18nc("@label", "Size:"), KIO::convertSize(item.size()));
 516             m_metaTextLabel->add(i18nc("@label", "Modified:"), item.timeString());
 517
 518 #ifdef HAVE_NEPOMUK
 519             KConfig config("kmetainformationrc", KConfig::NoGlobals);
 520             KConfigGroup settings = config.group("Show");
 521             initMetaInfoSettings(settings);
 522
 523             Nepomuk::Resource res(item.url());
 524
 525             QHash<QUrl, Nepomuk::Variant> properties = res.properties();
 526             QHash<QUrl, Nepomuk::Variant>::const_iterator it = properties.constBegin();
 527             while (it != properties.constEnd()) {
 528                 Nepomuk::Types::Property prop(it.key());
 529                 const QString label = prop.label();
 530                 if (settings.readEntry(label, true)) {
 531                     // TODO: use Nepomuk::formatValue(res, prop) if available
 532                     // instead of it.value().toString()
 533                     m_metaTextLabel->add(label, it.value().toString());
 534                 }
 535                 ++it;
 536             }
 537 #endif
 538         }
 539
 540         if (m_metaDataWidget != 0) {
 541             m_metaDataWidget->setFile(item.targetUrl());
 542         }
 543
 544         if (Phonon::BackendCapabilities::isMimeTypeAvailable(item.mimetype())) {
 545             if (m_phononWidget == 0) {
 546                 m_phononWidget = new PhononWidget(this);
 547
 548                 QVBoxLayout* vBoxLayout = qobject_cast<QVBoxLayout*>(layout());
 549                 Q_ASSERT(vBoxLayout != 0);
 550                 vBoxLayout->insertWidget(3, m_phononWidget);
 551             }
 552             m_phononWidget->setUrl(item.url());
 553         } else {
 554             delete m_phononWidget;
 555             m_phononWidget = 0;
 556         }
 557     }
 558 }
 559
 560 KFileItem InformationPanel::fileItem() const
 561 {
 562     if (!m_fileItem.isNull()) {
 563         return m_fileItem;
 564     }
 565
 566     if (!m_selection.isEmpty()) {
 567         Q_ASSERT(m_selection.count() == 1);
 568         return m_selection.first();
 569     }
 570
 571     // no item is hovered and no selection has been done: provide
 572     // an item for the directory represented by m_shownUrl
 573     KFileItem item(KFileItem::Unknown, KFileItem::Unknown, m_shownUrl);
 574     item.refresh();
 575     return item;
 576 }
 577
 578 bool InformationPanel::showMultipleSelectionInfo() const
 579 {
 580     return m_fileItem.isNull() && (m_selection.count() > 1);
 581 }
 582
 583 bool InformationPanel::isEqualToShownUrl(const KUrl& url) const
 584 {
 585     return m_shownUrl.equals(url, KUrl::CompareWithoutTrailingSlash);
 586 }
 587
 588 void InformationPanel::setNameLabelText(const QString& text)
 589 {
 590     QTextOption textOption;
 591     textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
 592
 593     QTextLayout textLayout(text);
 594     textLayout.setFont(m_nameLabel->font());
 595     textLayout.setTextOption(textOption);
 596
 597     QString wrappedText;
 598     wrappedText.reserve(text.length());
 599
 600     // wrap the text to fit into the width of m_nameLabel
 601     textLayout.beginLayout();
 602     QTextLine line = textLayout.createLine();
 603     while (line.isValid()) {
 604         line.setLineWidth(m_nameLabel->width());
 605         wrappedText += text.mid(line.textStart(), line.textLength());
 606
 607         line = textLayout.createLine();
 608         if (line.isValid()) {
 609             wrappedText += QChar::LineSeparator;
 610         }
 611     }
 612     textLayout.endLayout();
 613
 614     m_nameLabel->setText(wrappedText);
 615 }
 616
 617 void InformationPanel::reset()
 618 {
 619     m_selection.clear();
 620     m_shownUrl = url();
 621     m_fileItem = KFileItem();
 622     showItemInfo();
 623 }
 624
 625 void InformationPanel::initMetaInfoSettings(KConfigGroup& group)
 626 {
 627     if (!group.readEntry("initialized", false)) {
 628         // The resource file is read the first time. Assure
 629         // that some meta information is disabled per default.
 630         group.writeEntry("fileExtension", false);
 631         group.writeEntry("url", false);
 632         group.writeEntry("sourceModified", false);
 633         group.writeEntry("parentUrl", false);
 634         group.writeEntry("size", false);
 635         group.writeEntry("mime type", false);
 636         group.writeEntry("depth", false);
 637         group.writeEntry("name", false);
 638
 639         // mark the group as initialized
 640         group.writeEntry("initialized", true);
 641     }
 642 }
 643
 644 void InformationPanel::init()
 645 {
 646     const int spacing = KDialog::spacingHint();
 647
 648     m_infoTimer = new QTimer(this);
 649     m_infoTimer->setInterval(300);
 650     m_infoTimer->setSingleShot(true);
 651     connect(m_infoTimer, SIGNAL(timeout()),
 652             this, SLOT(slotInfoTimeout()));
 653
 654     // Initialize timer for disabling an outdated preview with a small
 655     // delay. This prevents flickering if the new preview can be generated
 656     // within a very small timeframe.
 657     m_outdatedPreviewTimer = new QTimer(this);
 658     m_outdatedPreviewTimer->setInterval(300);
 659     m_outdatedPreviewTimer->setSingleShot(true);
 660     connect(m_outdatedPreviewTimer, SIGNAL(timeout()),
 661             this, SLOT(markOutdatedPreview()));
 662
 663     QVBoxLayout* layout = new QVBoxLayout;
 664     layout->setSpacing(spacing);
 665
 666     // name
 667     m_nameLabel = new QLabel(this);
 668     QFont font = m_nameLabel->font();
 669     font.setBold(true);
 670     m_nameLabel->setFont(font);
 671     m_nameLabel->setAlignment(Qt::AlignHCenter);
 672     m_nameLabel->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
 673
 674     // preview
 675     m_preview = new PixmapViewer(this);
 676     m_preview->setMinimumWidth(KIconLoader::SizeEnormous + KIconLoader::SizeMedium);
 677     m_preview->setMinimumHeight(KIconLoader::SizeEnormous);
 678
 679     if (MetaDataWidget::metaDataAvailable()) {
 680         // rating, comment and tags
 681         m_metaDataWidget = new MetaDataWidget(this);
 682         m_metaDataWidget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
 683     }
 684
 685     // general meta text information
 686     m_metaTextLabel = new MetaTextLabel(this);
 687     m_metaTextLabel->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
 688
 689     m_metaTextArea = new QScrollArea(this);
 690     m_metaTextArea->setWidget(m_metaTextLabel);
 691     m_metaTextArea->setWidgetResizable(true);
 692     m_metaTextArea->setFrameShape(QFrame::NoFrame);
 693
 694     QWidget* viewport = m_metaTextArea->viewport();
 695     viewport->installEventFilter(this);
 696
 697     QPalette palette = viewport->palette();
 698     palette.setColor(viewport->backgroundRole(), QColor(Qt::transparent));
 699     viewport->setPalette(palette);
 700
 701     layout->addWidget(m_nameLabel);
 702     layout->addWidget(new KSeparator(this));
 703     layout->addWidget(m_preview);
 704     layout->addWidget(new KSeparator(this));
 705     if (m_metaDataWidget != 0) {
 706         layout->addWidget(m_metaDataWidget);
 707         layout->addWidget(new KSeparator(this));
 708     }
 709     layout->addWidget(m_metaTextArea);
 710     setLayout(layout);
 711
 712     org::kde::KDirNotify* dirNotify = new org::kde::KDirNotify(QString(), QString(),
 713                                                                QDBusConnection::sessionBus(), this);
 714     connect(dirNotify, SIGNAL(FileRenamed(QString, QString)), SLOT(slotFileRenamed(QString, QString)));
 715     connect(dirNotify, SIGNAL(FilesAdded(QString)), SLOT(slotFilesAdded(QString)));
 716     connect(dirNotify, SIGNAL(FilesChanged(QStringList)), SLOT(slotFilesChanged(QStringList)));
 717     connect(dirNotify, SIGNAL(FilesRemoved(QStringList)), SLOT(slotFilesRemoved(QStringList)));
 718     connect(dirNotify, SIGNAL(enteredDirectory(QString)), SLOT(slotEnteredDirectory(QString)));
 719     connect(dirNotify, SIGNAL(leftDirectory(QString)), SLOT(slotLeftDirectory(QString)));
 720
 721     m_initialized = true;
 722 }
 723
 724 #include "informationpanel.moc"