src/panels/information/kmetadatawidget.cpp

   1 /*****************************************************************************
   2  * Copyright (C) 2008 by Sebastian Trueg <trueg@kde.org>                     *
   3  * Copyright (C) 2009 by Peter Penz <peter.penz@gmx.at>                      *
   4  *                                                                           *
   5  * This library is free software; you can redistribute it and/or             *
   6  * modify it under the terms of the GNU Library General Public               *
   7  * License version 2 as published by the Free Software Foundation.           *
   8  *                                                                           *
   9  * This library 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 GNU         *
  12  * Library General Public License for more details.                          *
  13  *                                                                           *
  14  * You should have received a copy of the GNU Library General Public License *
  15  * along with this library; see the file COPYING.LIB.  If not, write to      *
  16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,      *
  17  * Boston, MA 02110-1301, USA.                                               *
  18  *****************************************************************************/
  19
  20 #include "kmetadatawidget.h"
  21
  22 #include <kconfig.h>
  23 #include <kconfiggroup.h>
  24 #include <kfileitem.h>
  25 #include <kglobalsettings.h>
  26 #include <kglobal.h>
  27 #include <klocale.h>
  28
  29 #include <QEvent>
  30 #include <QFontMetrics>
  31 #include <QGridLayout>
  32 #include <QLabel>
  33 #include <QList>
  34 #include <QString>
  35
  36 #include <config-nepomuk.h>
  37 #ifdef HAVE_NEPOMUK
  38     #define DISABLE_NEPOMUK_LEGACY
  39
  40     #include "kcommentwidget_p.h"
  41     #include "kloadmetadatathread_p.h"
  42     #include "ktaggingwidget_p.h"
  43
  44     #include <nepomuk/kratingwidget.h>
  45     #include <nepomuk/resource.h>
  46     #include <nepomuk/resourcemanager.h>
  47     #include <nepomuk/property.h>
  48     #include <nepomuk/tag.h>
  49     #include <nepomuk/variant.h>
  50     #include "nepomukmassupdatejob_p.h"
  51
  52     #include <QMutex>
  53     #include <QSpacerItem>
  54     #include <QThread>
  55 #else
  56     namespace Nepomuk
  57     {
  58         typedef int Tag;
  59     }
  60 #endif
  61
  62 class KMetaDataWidget::Private
  63 {
  64 public:
  65     struct Row
  66     {
  67         QLabel* label;
  68         QWidget* infoWidget;
  69     };
  70
  71     Private(KMetaDataWidget* parent);
  72     ~Private();
  73
  74     void addRow(QLabel* label, QWidget* infoWidget);
  75     void removeMetaInfoRows();
  76     void setRowVisible(QWidget* infoWidget, bool visible);
  77
  78     /**
  79      * Initializes the configuration file "kmetainformationrc"
  80      * with proper default settings for the first start in
  81      * an uninitialized environment.
  82      */
  83     void initMetaInfoSettings();
  84
  85     /**
  86      * Parses the configuration file "kmetainformationrc" and
  87      * updates the visibility of all rows.
  88      */
  89     void updateRowsVisibility();
  90
  91     void slotLoadingFinished();
  92
  93     void slotRatingChanged(unsigned int rating);
  94     void slotTagsChanged(const QList<Nepomuk::Tag>& tags);
  95     void slotCommentChanged(const QString& comment);
  96
  97     void slotMetaDataUpdateDone();
  98     void slotLinkActivated(const QString& link);
  99
 100 #ifdef HAVE_NEPOMUK
 101     void slotTagActivated(const Nepomuk::Tag& tag);
 102
 103     /**
 104      * Disables the metadata widget and starts the job that
 105      * changes the meta data asynchronously. After the job
 106      * has been finished, the metadata widget gets enabled again.
 107      */
 108     void startChangeDataJob(KJob* job);
 109
 110     /**
 111      * Merges items like 'width' and 'height' as one item.
 112      */
 113     QList<KLoadMetaDataThread::Item> mergedItems(const QList<KLoadMetaDataThread::Item>& items);
 114 #endif
 115
 116     bool m_sizeVisible;
 117     bool m_readOnly;
 118     bool m_nepomukActivated;
 119     MetaDataTypes m_visibleDataTypes;
 120     QList<KFileItem> m_fileItems;
 121     QList<Row> m_rows;
 122
 123     QGridLayout* m_gridLayout;
 124
 125     QLabel* m_typeInfo;
 126     QLabel* m_sizeLabel;
 127     QLabel* m_sizeInfo;
 128     QLabel* m_modifiedInfo;
 129     QLabel* m_ownerInfo;
 130     QLabel* m_permissionsInfo;
 131
 132 #ifdef HAVE_NEPOMUK
 133     KRatingWidget* m_ratingWidget;
 134     KTaggingWidget* m_taggingWidget;
 135     KCommentWidget* m_commentWidget;
 136
 137     QMap<KUrl, Nepomuk::Resource> m_files;
 138
 139     KLoadMetaDataThread* m_loadMetaDataThread;
 140 #endif
 141
 142 private:
 143     KMetaDataWidget* const q;
 144 };
 145
 146 KMetaDataWidget::Private::Private(KMetaDataWidget* parent) :
 147     m_sizeVisible(true),
 148     m_readOnly(false),
 149     m_nepomukActivated(false),
 150     m_visibleDataTypes(TypeData | SizeData | ModifiedData | OwnerData |
 151                 PermissionsData | RatingData | TagsData | CommentData),
 152     m_fileItems(),
 153     m_rows(),
 154     m_gridLayout(0),
 155     m_typeInfo(0),
 156     m_sizeLabel(0),
 157     m_sizeInfo(0),
 158     m_modifiedInfo(0),
 159     m_ownerInfo(0),
 160     m_permissionsInfo(0),
 161 #ifdef HAVE_NEPOMUK
 162     m_ratingWidget(0),
 163     m_taggingWidget(0),
 164     m_commentWidget(0),
 165     m_files(),
 166     m_loadMetaDataThread(0),
 167 #endif
 168     q(parent)
 169 {
 170     const QFontMetrics fontMetrics(KGlobalSettings::smallestReadableFont());
 171
 172     m_gridLayout = new QGridLayout(parent);
 173     m_gridLayout->setMargin(0);
 174     m_gridLayout->setSpacing(fontMetrics.height() / 4);
 175
 176     m_typeInfo = new QLabel(parent);
 177     m_sizeLabel = new QLabel(parent);
 178     m_sizeInfo = new QLabel(parent);
 179     m_modifiedInfo = new QLabel(parent);
 180     m_ownerInfo = new QLabel(parent);
 181     m_permissionsInfo = new QLabel(parent);
 182
 183 #ifdef HAVE_NEPOMUK
 184     m_nepomukActivated = (Nepomuk::ResourceManager::instance()->init() == 0);
 185     if (m_nepomukActivated) {
 186         m_ratingWidget = new KRatingWidget(parent);
 187         m_ratingWidget->setFixedHeight(fontMetrics.height());
 188         connect(m_ratingWidget, SIGNAL(ratingChanged(unsigned int)),
 189                 q, SLOT(slotRatingChanged(unsigned int)));
 190
 191         m_taggingWidget = new KTaggingWidget(parent);
 192         connect(m_taggingWidget, SIGNAL(tagsChanged(const QList<Nepomuk::Tag>&)),
 193                 q, SLOT(slotTagsChanged(const QList<Nepomuk::Tag>&)));
 194         connect(m_taggingWidget, SIGNAL(tagActivated(const Nepomuk::Tag&)),
 195                 q, SLOT(slotTagActivated(const Nepomuk::Tag&)));
 196
 197         m_commentWidget = new KCommentWidget(parent);
 198         connect(m_commentWidget, SIGNAL(commentChanged(const QString&)),
 199                 q, SLOT(slotCommentChanged(const QString&)));
 200     }
 201 #endif
 202
 203     initMetaInfoSettings();
 204 }
 205
 206 KMetaDataWidget::Private::~Private()
 207 {
 208 #ifdef HAVE_NEPOMUK
 209     if (m_loadMetaDataThread != 0) {
 210         disconnect(m_loadMetaDataThread, SIGNAL(finished()), q, SLOT(slotLoadingFinished()));
 211         m_loadMetaDataThread->cancelAndDelete();
 212         m_loadMetaDataThread = 0;
 213     }
 214 #endif
 215 }
 216
 217 void KMetaDataWidget::Private::addRow(QLabel* label, QWidget* infoWidget)
 218 {
 219     Row row;
 220     row.label = label;
 221     row.infoWidget = infoWidget;
 222     m_rows.append(row);
 223
 224     const QFont smallFont = KGlobalSettings::smallestReadableFont();
 225     // use a brighter color for the label and a small font size
 226     QPalette palette = label->palette();
 227     const QPalette::ColorRole role = q->foregroundRole();
 228     QColor textColor = palette.color(role);
 229     textColor.setAlpha(128);
 230     palette.setColor(role, textColor);
 231     label->setPalette(palette);
 232     label->setForegroundRole(role);
 233     label->setFont(smallFont);
 234     label->setWordWrap(true);
 235     label->setAlignment(Qt::AlignTop | Qt::AlignRight);
 236
 237     infoWidget->setForegroundRole(role);
 238     QLabel* infoLabel = qobject_cast<QLabel*>(infoWidget);
 239     if (infoLabel != 0) {
 240         infoLabel->setFont(smallFont);
 241         infoLabel->setWordWrap(true);
 242         infoLabel->setAlignment(Qt::AlignTop | Qt::AlignLeft);
 243     }
 244
 245     // add the row to grid layout
 246     const int rowIndex = m_rows.count();
 247     m_gridLayout->addWidget(label, rowIndex, 0, Qt::AlignRight);
 248     const int spacerWidth = QFontMetrics(smallFont).size(Qt::TextSingleLine, " ").width();
 249     m_gridLayout->addItem(new QSpacerItem(spacerWidth, 1), rowIndex, 1);
 250     m_gridLayout->addWidget(infoWidget, rowIndex, 2, Qt::AlignLeft);
 251 }
 252
 253 void KMetaDataWidget::Private::setRowVisible(QWidget* infoWidget, bool visible)
 254 {
 255     foreach (const Row& row, m_rows) {
 256         if (row.infoWidget == infoWidget) {
 257             row.label->setVisible(visible);
 258             row.infoWidget->setVisible(visible);
 259             return;
 260         }
 261     }
 262 }
 263
 264
 265 void KMetaDataWidget::Private::initMetaInfoSettings()
 266 {
 267     static const int s_metainformationrcVersion = 1;
 268     KConfig config("kmetainformationrc", KConfig::NoGlobals);
 269     if (config.group( "Misc" ).readEntry("version", 0) < s_metainformationrcVersion) {
 270         // The resource file is read the first time. Assure
 271         // that some meta information is disabled per default.
 272
 273         // clear old info
 274         config.deleteGroup( "Show" );
 275         KConfigGroup settings = config.group("Show");
 276
 277         // trueg: KDE 4.5: use a blacklist of actual rdf properties
 278
 279         static const char* disabledProperties[] = {
 280             "asText", "contentSize", "created", "depth", "description", "fileExtension",
 281             "fileName", "fileSize", "hasTag", "isPartOf", "lastModified", "mimeType", "name",
 282             "numericRating", "parentUrl", "permissions", "plainTextContent", "owner",
 283             "sourceModified", "url",
 284             0 // mandatory last entry
 285         };
 286
 287         for (int i = 0; disabledProperties[i] != 0; ++i) {
 288             settings.writeEntry(disabledProperties[i], false);
 289         }
 290
 291         // mark the group as initialized
 292         config.group( "Misc" ).writeEntry("version", s_metainformationrcVersion);
 293     }
 294 }
 295
 296 void KMetaDataWidget::Private::updateRowsVisibility()
 297 {
 298     KConfig config("kmetainformationrc", KConfig::NoGlobals);
 299     KConfigGroup settings = config.group("Show");
 300
 301     setRowVisible(m_typeInfo,
 302                   (m_visibleDataTypes & KMetaDataWidget::TypeData) &&
 303                   settings.readEntry("type", true));
 304
 305     // Cache in m_sizeVisible whether the size should be shown. This
 306     // is necessary as the size is temporary hidden when the target
 307     // file item is a directory.
 308     m_sizeVisible = (m_visibleDataTypes & KMetaDataWidget::SizeData) &&
 309                       settings.readEntry("size", true);
 310     setRowVisible(m_sizeInfo, m_sizeVisible);
 311
 312     setRowVisible(m_modifiedInfo,
 313                   (m_visibleDataTypes & KMetaDataWidget::ModifiedData) &&
 314                   settings.readEntry("modified", true));
 315
 316     setRowVisible(m_ownerInfo,
 317                   (m_visibleDataTypes & KMetaDataWidget::OwnerData) &&
 318                   settings.readEntry("owner", true));
 319
 320     setRowVisible(m_permissionsInfo,
 321                   (m_visibleDataTypes & KMetaDataWidget::PermissionsData) &&
 322                   settings.readEntry("permissions", true));
 323
 324 #ifdef HAVE_NEPOMUK
 325     if (m_nepomukActivated) {
 326         setRowVisible(m_ratingWidget,
 327                       (m_visibleDataTypes & KMetaDataWidget::RatingData) &&
 328                       settings.readEntry("rating", true));
 329
 330         setRowVisible(m_taggingWidget,
 331                       (m_visibleDataTypes & KMetaDataWidget::TagsData) &&
 332                       settings.readEntry("tags", true));
 333
 334         setRowVisible(m_commentWidget,
 335                       (m_visibleDataTypes & KMetaDataWidget::CommentData) &&
 336                       settings.readEntry("comment", true));
 337     }
 338 #endif
 339 }
 340
 341 void KMetaDataWidget::Private::slotLoadingFinished()
 342 {
 343 #ifdef HAVE_NEPOMUK
 344     Q_ASSERT(m_loadMetaDataThread != 0);
 345     Q_ASSERT(m_ratingWidget != 0);
 346     Q_ASSERT(m_commentWidget != 0);
 347     Q_ASSERT(m_taggingWidget != 0);
 348     m_ratingWidget->setRating(m_loadMetaDataThread->rating());
 349     m_commentWidget->setText(m_loadMetaDataThread->comment());
 350     m_taggingWidget->setTags(m_loadMetaDataThread->tags());
 351
 352     // Show the remaining meta information as text. The number
 353     // of required rows may very. Existing rows are reused to
 354     // prevent flickering.
 355     int index = 8;  // TODO: don't hardcode this value here
 356     const int rowCount = m_rows.count();
 357     Q_ASSERT(rowCount >= index);
 358
 359     const QList<KLoadMetaDataThread::Item> items = mergedItems(m_loadMetaDataThread->items());
 360     foreach (const KLoadMetaDataThread::Item& item, items) {
 361         if (index < rowCount) {
 362             // adjust texts of the current row
 363             m_rows[index].label->setText(item.label);
 364             QLabel* infoValueLabel = qobject_cast<QLabel*>(m_rows[index].infoWidget);
 365             Q_ASSERT(infoValueLabel != 0);
 366             infoValueLabel->setText(item.value);
 367         } else {
 368             // create new row
 369             QLabel* infoLabel = new QLabel(item.label, q);
 370             QLabel* infoValue = new QLabel(item.value, q);
 371             connect(infoValue, SIGNAL(linkActivated(QString)),
 372                     q, SLOT(slotLinkActivated(QString)));
 373             addRow(infoLabel, infoValue);
 374         }
 375         ++index;
 376     }
 377     if (items.count() > 0) {
 378         --index;
 379     }
 380
 381     // remove rows that are not needed anymore
 382     for (int i = m_rows.count() - 1; i >= index; --i) {
 383         delete m_rows[i].label;
 384         delete m_rows[i].infoWidget;
 385         m_rows.pop_back();
 386     }
 387
 388     m_files = m_loadMetaDataThread->files();
 389
 390     delete m_loadMetaDataThread;
 391     m_loadMetaDataThread = 0;
 392 #endif
 393
 394     q->updateGeometry();
 395 }
 396
 397 void KMetaDataWidget::Private::slotRatingChanged(unsigned int rating)
 398 {
 399 #ifdef HAVE_NEPOMUK
 400     Nepomuk::MassUpdateJob* job =
 401         Nepomuk::MassUpdateJob::rateResources(m_files.values(), rating);
 402     startChangeDataJob(job);
 403 #else
 404     Q_UNUSED(rating);
 405 #endif
 406 }
 407
 408 void KMetaDataWidget::Private::slotTagsChanged(const QList<Nepomuk::Tag>& tags)
 409 {
 410 #ifdef HAVE_NEPOMUK
 411     m_taggingWidget->setTags(tags);
 412
 413     Nepomuk::MassUpdateJob* job =
 414         Nepomuk::MassUpdateJob::tagResources(m_files.values(), tags);
 415     startChangeDataJob(job);
 416 #else
 417     Q_UNUSED(tags);
 418 #endif
 419 }
 420
 421 void KMetaDataWidget::Private::slotCommentChanged(const QString& comment)
 422 {
 423 #ifdef HAVE_NEPOMUK
 424     Nepomuk::MassUpdateJob* job =
 425         Nepomuk::MassUpdateJob::commentResources(m_files.values(), comment);
 426     startChangeDataJob(job);
 427 #else
 428     Q_UNUSED(comment);
 429 #endif
 430 }
 431
 432 #ifdef HAVE_NEPOMUK
 433 void KMetaDataWidget::Private::slotTagActivated(const Nepomuk::Tag& tag)
 434 {
 435     emit q->urlActivated(tag.resourceUri());
 436 }
 437 #endif
 438
 439 void KMetaDataWidget::Private::slotMetaDataUpdateDone()
 440 {
 441 #ifdef HAVE_NEPOMUK
 442     q->setEnabled(true);
 443 #endif
 444 }
 445
 446 void KMetaDataWidget::Private::slotLinkActivated(const QString& link)
 447 {
 448     emit q->urlActivated(KUrl(link));
 449 }
 450
 451 #ifdef HAVE_NEPOMUK
 452 void KMetaDataWidget::Private::startChangeDataJob(KJob* job)
 453 {
 454     connect(job, SIGNAL(result(KJob*)),
 455             q, SLOT(slotMetaDataUpdateDone()));
 456     q->setEnabled(false); // no updates during execution
 457     job->start();
 458 }
 459
 460 QList<KLoadMetaDataThread::Item>
 461     KMetaDataWidget::Private::mergedItems(const QList<KLoadMetaDataThread::Item>& items)
 462 {
 463     // TODO: Currently only "width" and "height" are merged as "width x height". If
 464     // other kind of merges should be done too, a more general approach is required.
 465     QList<KLoadMetaDataThread::Item> mergedItems;
 466
 467     KLoadMetaDataThread::Item width;
 468     KLoadMetaDataThread::Item height;
 469
 470     foreach (const KLoadMetaDataThread::Item& item, items) {
 471         if (item.name == "width") {
 472             width = item;
 473         } else if (item.name == "height") {
 474             height = item;
 475         } else {
 476             // insert the item sorted by the label
 477             bool inserted = false;
 478             int i = 0;
 479             const int count = mergedItems.count();
 480             while (!inserted && (i < count)) {
 481                 if (item.label < mergedItems[i].label) {
 482                     mergedItems.insert(i, item);
 483                     inserted = true;
 484                 }
 485                 ++i;
 486             }
 487             if (!inserted) {
 488                 mergedItems.append(item);
 489             }
 490         }
 491     }
 492
 493     const bool foundWidth = !width.name.isEmpty();
 494     const bool foundHeight = !height.name.isEmpty();
 495     if (foundWidth && !foundHeight) {
 496         mergedItems.insert(0, width);
 497     } else if (foundHeight && !foundWidth) {
 498         mergedItems.insert(0, height);
 499     } else if (foundWidth && foundHeight) {
 500         KLoadMetaDataThread::Item size;
 501         size.label = i18nc("@label", "Width x Height:");
 502         size.value = width.value + " x " + height.value;
 503         mergedItems.insert(0, size);
 504     }
 505
 506     return mergedItems;
 507 }
 508 #endif
 509
 510 KMetaDataWidget::KMetaDataWidget(QWidget* parent) :
 511     QWidget(parent),
 512     d(new Private(this))
 513 {
 514 }
 515
 516 KMetaDataWidget::~KMetaDataWidget()
 517 {
 518     delete d;
 519 }
 520
 521 void KMetaDataWidget::setItem(const KFileItem& item)
 522 {
 523     // update values for "type", "size", "modified",
 524     // "owner" and "permissions" synchronously
 525     d->m_sizeLabel->setText(i18nc("@label", "Size:"));
 526     if (item.isDir()) {
 527         d->m_typeInfo->setText(i18nc("@label", "Folder"));
 528         d->setRowVisible(d->m_sizeInfo, false);
 529     } else {
 530         d->m_typeInfo->setText(item.mimeComment());
 531         d->m_sizeInfo->setText(KIO::convertSize(item.size()));
 532         d->setRowVisible(d->m_sizeInfo, d->m_sizeVisible);
 533     }
 534     d->m_modifiedInfo->setText(KGlobal::locale()->formatDateTime(item.time(KFileItem::ModificationTime), KLocale::FancyLongDate));
 535     d->m_ownerInfo->setText(item.user());
 536     d->m_permissionsInfo->setText(item.permissionsString());
 537
 538     setItems(KFileItemList() << item);
 539 }
 540
 541 void KMetaDataWidget::setItems(const KFileItemList& items)
 542 {
 543     d->m_fileItems = items;
 544
 545     if (items.count() > 1) {
 546         // calculate the size of all items and show this
 547         // information to the user
 548         d->m_sizeLabel->setText(i18nc("@label", "Total Size:"));
 549         d->setRowVisible(d->m_sizeInfo, d->m_sizeVisible);
 550
 551         quint64 totalSize = 0;
 552         foreach (const KFileItem& item, items) {
 553             if (!item.isDir() && !item.isLink()) {
 554                 totalSize += item.size();
 555             }
 556         }
 557         d->m_sizeInfo->setText(KIO::convertSize(totalSize));
 558     }
 559
 560 #ifdef HAVE_NEPOMUK
 561     if (d->m_nepomukActivated) {
 562         QList<KUrl> urls;
 563         foreach (const KFileItem& item, items) {
 564             const KUrl url = item.nepomukUri();
 565             if (url.isValid()) {
 566                 urls.append(url);
 567             }
 568         }
 569
 570         if (d->m_loadMetaDataThread != 0) {
 571             disconnect(d->m_loadMetaDataThread, SIGNAL(finished()), this, SLOT(slotLoadingFinished()));
 572             d->m_loadMetaDataThread->cancelAndDelete();
 573         }
 574
 575         d->m_loadMetaDataThread = new KLoadMetaDataThread();
 576         connect(d->m_loadMetaDataThread, SIGNAL(finished()), this, SLOT(slotLoadingFinished()));
 577         d->m_loadMetaDataThread->load(urls);
 578     }
 579 #endif
 580 }
 581
 582 void KMetaDataWidget::setItem(const KUrl& url)
 583 {
 584     KFileItem item(KFileItem::Unknown, KFileItem::Unknown, url);
 585     item.refresh();
 586     setItem(item);
 587 }
 588
 589 void KMetaDataWidget::setItems(const QList<KUrl>& urls)
 590 {
 591     KFileItemList items;
 592     foreach (const KUrl& url, urls) {
 593         KFileItem item(KFileItem::Unknown, KFileItem::Unknown, url);
 594         item.refresh();
 595         items.append(item);
 596     }
 597     setItems(items);
 598 }
 599
 600 KFileItemList KMetaDataWidget::items() const
 601 {
 602     return d->m_fileItems;
 603 }
 604
 605 void KMetaDataWidget::setReadOnly(bool readOnly)
 606 {
 607     d->m_readOnly = readOnly;
 608 #ifdef HAVE_NEPOMUK
 609     // TODO: encapsulate this code as part of a metadata-model for KDE 4.5
 610     if (d->m_taggingWidget)
 611         d->m_taggingWidget->setReadOnly(readOnly);
 612     if (d->m_commentWidget)
 613         d->m_commentWidget->setReadOnly(readOnly);
 614 #endif
 615 }
 616
 617 bool KMetaDataWidget::isReadOnly() const
 618 {
 619     return d->m_readOnly;
 620 }
 621
 622 void KMetaDataWidget::setVisibleDataTypes(MetaDataTypes data)
 623 {
 624     d->m_visibleDataTypes = data;
 625     d->updateRowsVisibility();
 626 }
 627
 628 KMetaDataWidget::MetaDataTypes KMetaDataWidget::visibleDataTypes() const
 629 {
 630     return d->m_visibleDataTypes;
 631 }
 632
 633 QSize KMetaDataWidget::sizeHint() const
 634 {
 635     const int fixedWidth = 200;
 636
 637     int height = d->m_gridLayout->margin() * 2 +
 638                  d->m_gridLayout->spacing() * (d->m_rows.count() - 1);
 639
 640     foreach (const Private::Row& row, d->m_rows) {
 641         if (row.infoWidget != 0) {
 642             int rowHeight = row.infoWidget->heightForWidth(fixedWidth / 2);
 643             if (rowHeight <= 0) {
 644                 rowHeight = row.infoWidget->sizeHint().height();
 645             }
 646             height += rowHeight;
 647         }
 648     }
 649
 650     return QSize(fixedWidth, height);
 651 }
 652
 653 bool KMetaDataWidget::event(QEvent* event)
 654 {
 655     if (event->type() == QEvent::Polish) {
 656         // The adding of rows is not done in the constructor. This allows the
 657         // client of KMetaDataWidget to set a proper foreground role which
 658         // will be respected by the rows.
 659
 660         d->addRow(new QLabel(i18nc("@label", "Type:"), this), d->m_typeInfo);
 661         d->addRow(d->m_sizeLabel, d->m_sizeInfo);
 662         d->addRow(new QLabel(i18nc("@label", "Modified:"), this), d->m_modifiedInfo);
 663         d->addRow(new QLabel(i18nc("@label", "Owner:"), this), d->m_ownerInfo);
 664         d->addRow(new QLabel(i18nc("@label", "Permissions:"), this), d->m_permissionsInfo);
 665
 666     #ifdef HAVE_NEPOMUK
 667         if (d->m_nepomukActivated) {
 668             d->addRow(new QLabel(i18nc("@label", "Rating:"), this), d->m_ratingWidget);
 669             d->addRow(new QLabel(i18nc("@label", "Tags:"), this), d->m_taggingWidget);
 670             d->addRow(new QLabel(i18nc("@label", "Comment:"), this), d->m_commentWidget);
 671         }
 672     #endif
 673
 674         d->updateRowsVisibility();
 675     }
 676
 677     return QWidget::event(event);
 678 }
 679
 680 #include "kmetadatawidget.moc"