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 "dolphin_informationpanelsettings.h"
  61 #include "settings/dolphinsettings.h"
  62 #include "metadatawidget.h"
  63 #include "metatextlabel.h"
  64 #include "phononwidget.h"
  65 #include "pixmapviewer.h"
  66
  67 /**
  68  * Helper function for sorting items with qSort() in
  69  * InformationPanel::contextMenu().
  70  */
  71 bool lessThan(const QAction* action1, const QAction* action2)
  72 {
  73     return action1->text() < action2->text();
  74 }
  75
  76
  77 InformationPanel::InformationPanel(QWidget* parent) :
  78     Panel(parent),
  79     m_initialized(false),
  80     m_pendingPreview(false),
  81     m_infoTimer(0),
  82     m_outdatedPreviewTimer(0),
  83     m_shownUrl(),
  84     m_urlCandidate(),
  85     m_fileItem(),
  86     m_selection(),
  87     m_nameLabel(0),
  88     m_preview(0),
  89     m_phononWidget(0),
  90     m_metaDataWidget(0),
  91     m_metaTextArea(0),
  92     m_metaTextLabel(0)
  93 {
  94 }
  95
  96 InformationPanel::~InformationPanel()
  97 {
  98 }
  99
 100 QSize InformationPanel::sizeHint() const
 101 {
 102     QSize size = Panel::sizeHint();
 103     size.setWidth(minimumSizeHint().width());
 104     return size;
 105 }
 106
 107 void InformationPanel::setUrl(const KUrl& url)
 108 {
 109     Panel::setUrl(url);
 110     if (url.isValid() && !isEqualToShownUrl(url)) {
 111         if (isVisible()) {
 112             cancelRequest();
 113             m_shownUrl = url;
 114             showItemInfo();
 115         } else {
 116             m_shownUrl = url;
 117         }
 118     }
 119 }
 120
 121 void InformationPanel::setSelection(const KFileItemList& selection)
 122 {
 123     if (!isVisible()) {
 124         return;
 125     }
 126
 127     if ((selection.count() == 0) && (m_selection.count() == 0)) {
 128         // The selection has not really changed, only the current index.
 129         // QItemSelectionModel emits a signal in this case and it is less
 130         // expensive doing the check this way instead of patching
 131         // DolphinView::emitSelectionChanged().
 132         return;
 133     }
 134
 135     m_selection = selection;
 136
 137     const int count = selection.count();
 138     if (count == 0) {
 139         if (!isEqualToShownUrl(url())) {
 140             m_shownUrl = url();
 141             showItemInfo();
 142         }
 143     } else {
 144         if ((count == 1) && !selection.first().url().isEmpty()) {
 145             m_urlCandidate = selection.first().url();
 146         }
 147         m_infoTimer->start();
 148     }
 149 }
 150
 151 void InformationPanel::requestDelayedItemInfo(const KFileItem& item)
 152 {
 153     if (!isVisible()) {
 154         return;
 155     }
 156
 157     cancelRequest();
 158
 159     m_fileItem = KFileItem();
 160     if (item.isNull()) {
 161         // The cursor is above the viewport. If files are selected,
 162         // show information regarding the selection.
 163         if (m_selection.size() > 0) {
 164             m_pendingPreview = false;
 165             m_infoTimer->start();
 166         }
 167     } else {
 168         const KUrl url = item.url();
 169         if (url.isValid() && !isEqualToShownUrl(url)) {
 170             m_urlCandidate = item.url();
 171             m_fileItem = item;
 172             m_infoTimer->start();
 173         }
 174     }
 175 }
 176
 177 void InformationPanel::showEvent(QShowEvent* event)
 178 {
 179     Panel::showEvent(event);
 180     if (!event->spontaneous()) {
 181         if (!m_initialized) {
 182             // do a delayed initialization so that no performance
 183             // penalty is given when Dolphin is started with a closed
 184             // Information Panel
 185             init();
 186         }
 187         showItemInfo();
 188     }
 189 }
 190
 191 void InformationPanel::resizeEvent(QResizeEvent* event)
 192 {
 193     if (isVisible()) {
 194         // If the text inside the name label or the info label cannot
 195         // get wrapped, then the maximum width of the label is increased
 196         // so that the width of the information panel gets increased.
 197         // To prevent this, the maximum width is adjusted to
 198         // the current width of the panel.
 199         const int maxWidth = event->size().width() - KDialog::spacingHint() * 4;
 200         m_nameLabel->setMaximumWidth(maxWidth);
 201
 202         // try to increase the preview as large as possible
 203         m_preview->setSizeHint(QSize(maxWidth, maxWidth));
 204         m_urlCandidate = m_shownUrl; // reset the URL candidate if a resizing is done
 205         m_infoTimer->start();
 206     }
 207     Panel::resizeEvent(event);
 208 }
 209
 210 bool InformationPanel::eventFilter(QObject* obj, QEvent* event)
 211 {
 212     // Check whether the size of the meta text area has changed and adjust
 213     // the fixed width in a way that no horizontal scrollbar needs to be shown.
 214     if ((obj == m_metaTextArea->viewport()) && (event->type() == QEvent::Resize)) {
 215         QResizeEvent* resizeEvent = static_cast<QResizeEvent*>(event);
 216         m_metaTextLabel->setFixedWidth(resizeEvent->size().width());
 217     }
 218     return Panel::eventFilter(obj, event);
 219 }
 220
 221 void InformationPanel::contextMenuEvent(QContextMenuEvent* event)
 222 {
 223     Panel::contextMenuEvent(event);
 224
 225 #ifdef HAVE_NEPOMUK
 226     if (showMultipleSelectionInfo()) {
 227         return;
 228     }
 229
 230     KMenu popup(this);
 231
 232     QAction* previewAction = popup.addAction(i18nc("@action:inmenu", "Preview"));
 233     previewAction->setIcon(KIcon("view-preview"));
 234     previewAction->setCheckable(true);
 235     previewAction->setChecked(InformationPanelSettings::showPreview());
 236
 237     QAction* ratingAction = popup.addAction(i18nc("@action:inmenu", "Rating"));
 238     ratingAction->setIcon(KIcon("rating"));
 239     ratingAction->setCheckable(true);
 240     ratingAction->setChecked(InformationPanelSettings::showRating());
 241
 242     QAction* commentAction = popup.addAction(i18nc("@action:inmenu", "Comment"));
 243     commentAction->setIcon(KIcon("text-plain"));
 244     commentAction->setCheckable(true);
 245     commentAction->setChecked(InformationPanelSettings::showComment());
 246
 247     QAction* tagsAction = popup.addAction(i18nc("@action:inmenu", "Tags"));
 248     tagsAction->setCheckable(true);
 249     tagsAction->setChecked(InformationPanelSettings::showTags());
 250
 251     KConfig config("kmetainformationrc", KConfig::NoGlobals);
 252     KConfigGroup settings = config.group("Show");
 253     initMetaInfoSettings(settings);
 254
 255     QList<QAction*> actions;
 256
 257     // Get all meta information labels that are available for
 258     // the currently shown file item and add them to the popup.
 259     Nepomuk::Resource res(fileItem().url());
 260     QHash<QUrl, Nepomuk::Variant> properties = res.properties();
 261     QHash<QUrl, Nepomuk::Variant>::const_iterator it = properties.constBegin();
 262     while (it != properties.constEnd()) {
 263         Nepomuk::Types::Property prop(it.key());
 264         const QString key = prop.label();
 265
 266         // Meta information provided by Nepomuk that is already
 267         // available from KFileItem should not be configurable.
 268         bool skip = (key == "fileExtension") ||
 269                     (key == "name") ||
 270                     (key == "sourceModified") ||
 271                     (key == "size") ||
 272                     (key == "mime type");
 273         if (!skip) {
 274             // Check whether there is already a meta information
 275             // having the same label. In this case don't show it
 276             // twice in the menu.
 277             foreach (const QAction* action, actions) {
 278                 if (action->data().toString() == key) {
 279                     skip = true;
 280                     break;
 281                 }
 282             }
 283         }
 284
 285         if (!skip) {
 286             const QString label = key; // TODO
 287             QAction* action = new QAction(label, &popup);
 288             action->setCheckable(true);
 289             action->setChecked(settings.readEntry(key, true));
 290             action->setData(key);
 291             actions.append(action);
 292         }
 293
 294         ++it;
 295     }
 296
 297     if (actions.count() > 0) {
 298         popup.addSeparator();
 299
 300         // add all items alphabetically sorted to the popup
 301         qSort(actions.begin(), actions.end(), lessThan);
 302         foreach (QAction* action, actions) {
 303             popup.addAction(action);
 304         }
 305     }
 306
 307     // Open the popup and adjust the settings for the
 308     // selected action.
 309     QAction* action = popup.exec(QCursor::pos());
 310     if (action == 0) {
 311         return;
 312     }
 313
 314     if (action == previewAction) {
 315         // TODO
 316     } else if (action == ratingAction) {
 317         // TODO
 318     } else if (action == commentAction) {
 319         // TODO
 320     } else if (action == tagsAction) {
 321         // TODO
 322     } else {
 323         settings.writeEntry(action->data().toString(), action->isChecked());
 324         settings.sync();
 325         showMetaInfo();
 326     }
 327 #endif
 328 }
 329
 330 void InformationPanel::showItemInfo()
 331 {
 332     if (!isVisible()) {
 333         return;
 334     }
 335
 336     cancelRequest();
 337
 338     if (showMultipleSelectionInfo()) {
 339         KIconLoader iconLoader;
 340         QPixmap icon = iconLoader.loadIcon("dialog-information",
 341                                            KIconLoader::NoGroup,
 342                                            KIconLoader::SizeEnormous);
 343         m_preview->setPixmap(icon);
 344         setNameLabelText(i18ncp("@info", "%1 item selected", "%1 items selected",  m_selection.count()));
 345         m_shownUrl = KUrl();
 346     } else {
 347         const KFileItem item = fileItem();
 348         const KUrl itemUrl = item.url();
 349         if (!applyPlace(itemUrl)) {
 350             // try to get a preview pixmap from the item...
 351             m_pendingPreview = true;
 352
 353             // Mark the currently shown preview as outdated. This is done
 354             // with a small delay to prevent a flickering when the next preview
 355             // can be shown within a short timeframe.
 356             m_outdatedPreviewTimer->start();
 357
 358             KIO::PreviewJob* job = KIO::filePreview(KFileItemList() << item,
 359                                                     m_preview->width(),
 360                                                     m_preview->height(),
 361                                                     0,
 362                                                     0,
 363                                                     false,
 364                                                     true);
 365
 366             connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 367                     this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 368             connect(job, SIGNAL(failed(const KFileItem&)),
 369                     this, SLOT(showIcon(const KFileItem&)));
 370
 371             setNameLabelText(itemUrl.fileName());
 372         }
 373     }
 374
 375     showMetaInfo();
 376 }
 377
 378 void InformationPanel::slotInfoTimeout()
 379 {
 380     m_shownUrl = m_urlCandidate;
 381     showItemInfo();
 382 }
 383
 384 void InformationPanel::markOutdatedPreview()
 385 {
 386     KIconEffect iconEffect;
 387     QPixmap disabledPixmap = iconEffect.apply(m_preview->pixmap(),
 388                                               KIconLoader::Desktop,
 389                                               KIconLoader::DisabledState);
 390     m_preview->setPixmap(disabledPixmap);
 391 }
 392
 393 void InformationPanel::showIcon(const KFileItem& item)
 394 {
 395     m_outdatedPreviewTimer->stop();
 396     m_pendingPreview = false;
 397     if (!applyPlace(item.url())) {
 398         m_preview->setPixmap(item.pixmap(KIconLoader::SizeEnormous));
 399     }
 400 }
 401
 402 void InformationPanel::showPreview(const KFileItem& item,
 403                                   const QPixmap& pixmap)
 404 {
 405     m_outdatedPreviewTimer->stop();
 406
 407     Q_UNUSED(item);
 408     if (m_pendingPreview) {
 409         m_preview->setPixmap(pixmap);
 410         m_pendingPreview = false;
 411     }
 412 }
 413
 414 void InformationPanel::slotFileRenamed(const QString& source, const QString& dest)
 415 {
 416     const KUrl sourceUrl = KUrl(source);
 417
 418     // Verify whether the renamed item is selected. If this is the case, the
 419     // selection must be updated with the renamed item.
 420     bool isSelected = false;
 421     for (int i = m_selection.size() - 1; i >= 0; --i) {
 422         if (m_selection[i].url() == sourceUrl) {
 423             m_selection.removeAt(i);
 424             isSelected = true;
 425             break;
 426         }
 427     }
 428
 429     if ((m_shownUrl == sourceUrl) || isSelected) {
 430         m_shownUrl = KUrl(dest);
 431         m_fileItem = KFileItem(KFileItem::Unknown, KFileItem::Unknown, m_shownUrl);
 432         if (isSelected) {
 433             m_selection.append(m_fileItem);
 434         }
 435         showItemInfo();
 436     }
 437 }
 438
 439 void InformationPanel::slotFilesAdded(const QString& directory)
 440 {
 441     if (m_shownUrl == KUrl(directory)) {
 442         // If the 'trash' icon changes because the trash has been emptied or got filled,
 443         // the signal filesAdded("trash:/") will be emitted.
 444         KFileItem item(KFileItem::Unknown, KFileItem::Unknown, KUrl(directory));
 445         requestDelayedItemInfo(item);
 446     }
 447 }
 448
 449 void InformationPanel::slotFilesChanged(const QStringList& files)
 450 {
 451     foreach (const QString& fileName, files) {
 452         if (m_shownUrl == KUrl(fileName)) {
 453             showItemInfo();
 454             break;
 455         }
 456     }
 457 }
 458
 459 void InformationPanel::slotFilesRemoved(const QStringList& files)
 460 {
 461     foreach (const QString& fileName, files) {
 462         if (m_shownUrl == KUrl(fileName)) {
 463             // the currently shown item has been removed, show
 464             // the parent directory as fallback
 465             reset();
 466             break;
 467         }
 468     }
 469 }
 470
 471 void InformationPanel::slotEnteredDirectory(const QString& directory)
 472 {
 473     if (m_shownUrl == KUrl(directory)) {
 474         KFileItem item(KFileItem::Unknown, KFileItem::Unknown, KUrl(directory));
 475         requestDelayedItemInfo(item);
 476     }
 477 }
 478
 479 void InformationPanel::slotLeftDirectory(const QString& directory)
 480 {
 481     if (m_shownUrl == KUrl(directory)) {
 482         // The signal 'leftDirectory' is also emitted when a media
 483         // has been unmounted. In this case no directory change will be
 484         // done in Dolphin, but the Information Panel must be updated to
 485         // indicate an invalid directory.
 486         reset();
 487     }
 488 }
 489
 490 bool InformationPanel::applyPlace(const KUrl& url)
 491 {
 492     KFilePlacesModel* placesModel = DolphinSettings::instance().placesModel();
 493     int count = placesModel->rowCount();
 494
 495     for (int i = 0; i < count; ++i) {
 496         QModelIndex index = placesModel->index(i, 0);
 497
 498         if (url.equals(placesModel->url(index), KUrl::CompareWithoutTrailingSlash)) {
 499             setNameLabelText(placesModel->text(index));
 500             m_preview->setPixmap(placesModel->icon(index).pixmap(128, 128));
 501             return true;
 502         }
 503     }
 504
 505     return false;
 506 }
 507
 508 void InformationPanel::cancelRequest()
 509 {
 510     m_infoTimer->stop();
 511 }
 512
 513 void InformationPanel::showMetaInfo()
 514 {
 515     m_metaTextLabel->clear();
 516
 517     if (showMultipleSelectionInfo()) {
 518         if (m_metaDataWidget != 0) {
 519             KUrl::List urls;
 520             foreach (const KFileItem& item, m_selection) {
 521                 urls.append(item.targetUrl());
 522             }
 523             m_metaDataWidget->setFiles(urls);
 524         }
 525
 526         quint64 totalSize = 0;
 527         foreach (const KFileItem& item, m_selection) {
 528             // Only count the size of files, not dirs to match what
 529             // DolphinViewContainer::selectionStatusBarText() does.
 530             if (!item.isDir() && !item.isLink()) {
 531                 totalSize += item.size();
 532             }
 533         }
 534         m_metaTextLabel->add(i18nc("@label", "Total size:"), KIO::convertSize(totalSize));
 535
 536         delete m_phononWidget;
 537         m_phononWidget = 0;
 538     } else {
 539         const KFileItem item = fileItem();
 540         if (item.isDir()) {
 541             m_metaTextLabel->add(i18nc("@label", "Type:"), i18nc("@label", "Folder"));
 542             m_metaTextLabel->add(i18nc("@label", "Modified:"), item.timeString());
 543         } else {
 544             m_metaTextLabel->add(i18nc("@label", "Type:"), item.mimeComment());
 545
 546             m_metaTextLabel->add(i18nc("@label", "Size:"), KIO::convertSize(item.size()));
 547             m_metaTextLabel->add(i18nc("@label", "Modified:"), item.timeString());
 548
 549 #ifdef HAVE_NEPOMUK
 550             KConfig config("kmetainformationrc", KConfig::NoGlobals);
 551             KConfigGroup settings = config.group("Show");
 552             initMetaInfoSettings(settings);
 553
 554             Nepomuk::Resource res(item.url());
 555
 556             QHash<QUrl, Nepomuk::Variant> properties = res.properties();
 557             QHash<QUrl, Nepomuk::Variant>::const_iterator it = properties.constBegin();
 558             while (it != properties.constEnd()) {
 559                 Nepomuk::Types::Property prop(it.key());
 560                 const QString label = prop.label();
 561                 if (settings.readEntry(label, true)) {
 562                     // TODO: use Nepomuk::formatValue(res, prop) if available
 563                     // instead of it.value().toString()
 564                     m_metaTextLabel->add(label, it.value().toString());
 565                 }
 566                 ++it;
 567             }
 568 #endif
 569         }
 570
 571         if (m_metaDataWidget != 0) {
 572             m_metaDataWidget->setFile(item.targetUrl());
 573         }
 574
 575         if (Phonon::BackendCapabilities::isMimeTypeAvailable(item.mimetype())) {
 576             if (m_phononWidget == 0) {
 577                 m_phononWidget = new PhononWidget(this);
 578
 579                 QVBoxLayout* vBoxLayout = qobject_cast<QVBoxLayout*>(layout());
 580                 Q_ASSERT(vBoxLayout != 0);
 581                 vBoxLayout->insertWidget(3, m_phononWidget);
 582             }
 583             m_phononWidget->setUrl(item.url());
 584         } else {
 585             delete m_phononWidget;
 586             m_phononWidget = 0;
 587         }
 588     }
 589 }
 590
 591 KFileItem InformationPanel::fileItem() const
 592 {
 593     if (!m_fileItem.isNull()) {
 594         return m_fileItem;
 595     }
 596
 597     if (!m_selection.isEmpty()) {
 598         Q_ASSERT(m_selection.count() == 1);
 599         return m_selection.first();
 600     }
 601
 602     // no item is hovered and no selection has been done: provide
 603     // an item for the directory represented by m_shownUrl
 604     KFileItem item(KFileItem::Unknown, KFileItem::Unknown, m_shownUrl);
 605     item.refresh();
 606     return item;
 607 }
 608
 609 bool InformationPanel::showMultipleSelectionInfo() const
 610 {
 611     return m_fileItem.isNull() && (m_selection.count() > 1);
 612 }
 613
 614 bool InformationPanel::isEqualToShownUrl(const KUrl& url) const
 615 {
 616     return m_shownUrl.equals(url, KUrl::CompareWithoutTrailingSlash);
 617 }
 618
 619 void InformationPanel::setNameLabelText(const QString& text)
 620 {
 621     QTextOption textOption;
 622     textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
 623
 624     QTextLayout textLayout(text);
 625     textLayout.setFont(m_nameLabel->font());
 626     textLayout.setTextOption(textOption);
 627
 628     QString wrappedText;
 629     wrappedText.reserve(text.length());
 630
 631     // wrap the text to fit into the width of m_nameLabel
 632     textLayout.beginLayout();
 633     QTextLine line = textLayout.createLine();
 634     while (line.isValid()) {
 635         line.setLineWidth(m_nameLabel->width());
 636         wrappedText += text.mid(line.textStart(), line.textLength());
 637
 638         line = textLayout.createLine();
 639         if (line.isValid()) {
 640             wrappedText += QChar::LineSeparator;
 641         }
 642     }
 643     textLayout.endLayout();
 644
 645     m_nameLabel->setText(wrappedText);
 646 }
 647
 648 void InformationPanel::reset()
 649 {
 650     m_selection.clear();
 651     m_shownUrl = url();
 652     m_fileItem = KFileItem();
 653     showItemInfo();
 654 }
 655
 656 void InformationPanel::initMetaInfoSettings(KConfigGroup& group)
 657 {
 658     if (!group.readEntry("initialized", false)) {
 659         // The resource file is read the first time. Assure
 660         // that some meta information is disabled per default.
 661         group.writeEntry("fileExtension", false);
 662         group.writeEntry("url", false);
 663         group.writeEntry("sourceModified", false);
 664         group.writeEntry("parentUrl", false);
 665         group.writeEntry("size", false);
 666         group.writeEntry("mime type", false);
 667         group.writeEntry("depth", false);
 668         group.writeEntry("name", false);
 669
 670         // mark the group as initialized
 671         group.writeEntry("initialized", true);
 672     }
 673 }
 674
 675 void InformationPanel::init()
 676 {
 677     const int spacing = KDialog::spacingHint();
 678
 679     m_infoTimer = new QTimer(this);
 680     m_infoTimer->setInterval(300);
 681     m_infoTimer->setSingleShot(true);
 682     connect(m_infoTimer, SIGNAL(timeout()),
 683             this, SLOT(slotInfoTimeout()));
 684
 685     // Initialize timer for disabling an outdated preview with a small
 686     // delay. This prevents flickering if the new preview can be generated
 687     // within a very small timeframe.
 688     m_outdatedPreviewTimer = new QTimer(this);
 689     m_outdatedPreviewTimer->setInterval(300);
 690     m_outdatedPreviewTimer->setSingleShot(true);
 691     connect(m_outdatedPreviewTimer, SIGNAL(timeout()),
 692             this, SLOT(markOutdatedPreview()));
 693
 694     QVBoxLayout* layout = new QVBoxLayout;
 695     layout->setSpacing(spacing);
 696
 697     // name
 698     m_nameLabel = new QLabel(this);
 699     QFont font = m_nameLabel->font();
 700     font.setBold(true);
 701     m_nameLabel->setFont(font);
 702     m_nameLabel->setAlignment(Qt::AlignHCenter);
 703     m_nameLabel->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
 704
 705     // preview
 706     m_preview = new PixmapViewer(this);
 707     m_preview->setMinimumWidth(KIconLoader::SizeEnormous + KIconLoader::SizeMedium);
 708     m_preview->setMinimumHeight(KIconLoader::SizeEnormous);
 709
 710     if (MetaDataWidget::metaDataAvailable()) {
 711         // rating, comment and tags
 712         m_metaDataWidget = new MetaDataWidget(this);
 713         m_metaDataWidget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
 714     }
 715
 716     // general meta text information
 717     m_metaTextLabel = new MetaTextLabel(this);
 718     m_metaTextLabel->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
 719
 720     m_metaTextArea = new QScrollArea(this);
 721     m_metaTextArea->setWidget(m_metaTextLabel);
 722     m_metaTextArea->setWidgetResizable(true);
 723     m_metaTextArea->setFrameShape(QFrame::NoFrame);
 724
 725     QWidget* viewport = m_metaTextArea->viewport();
 726     viewport->installEventFilter(this);
 727
 728     QPalette palette = viewport->palette();
 729     palette.setColor(viewport->backgroundRole(), QColor(Qt::transparent));
 730     viewport->setPalette(palette);
 731
 732     layout->addWidget(m_nameLabel);
 733     layout->addWidget(new KSeparator(this));
 734     layout->addWidget(m_preview);
 735     layout->addWidget(new KSeparator(this));
 736     if (m_metaDataWidget != 0) {
 737         layout->addWidget(m_metaDataWidget);
 738         layout->addWidget(new KSeparator(this));
 739     }
 740     layout->addWidget(m_metaTextArea);
 741     setLayout(layout);
 742
 743     org::kde::KDirNotify* dirNotify = new org::kde::KDirNotify(QString(), QString(),
 744                                                                QDBusConnection::sessionBus(), this);
 745     connect(dirNotify, SIGNAL(FileRenamed(QString, QString)), SLOT(slotFileRenamed(QString, QString)));
 746     connect(dirNotify, SIGNAL(FilesAdded(QString)), SLOT(slotFilesAdded(QString)));
 747     connect(dirNotify, SIGNAL(FilesChanged(QStringList)), SLOT(slotFilesChanged(QStringList)));
 748     connect(dirNotify, SIGNAL(FilesRemoved(QStringList)), SLOT(slotFilesRemoved(QStringList)));
 749     connect(dirNotify, SIGNAL(enteredDirectory(QString)), SLOT(slotEnteredDirectory(QString)));
 750     connect(dirNotify, SIGNAL(leftDirectory(QString)), SLOT(slotLeftDirectory(QString)));
 751
 752     m_initialized = true;
 753 }
 754
 755 #include "informationpanel.moc"