src/dolphindetailsview.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz                                      *
   3  *   peter.penz@gmx.at                                                     *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  19  ***************************************************************************/
  20
  21 #include "dolphindetailsview.h"
  22
  23 #include "dolphinmodel.h"
  24 #include "dolphincontroller.h"
  25 #include "dolphinsettings.h"
  26 #include "dolphinsortfilterproxymodel.h"
  27 #include "draganddrophelper.h"
  28 #include "selectionmanager.h"
  29 #include "viewproperties.h"
  30
  31 #include "dolphin_detailsmodesettings.h"
  32 #include "dolphin_generalsettings.h"
  33
  34 #include <kdirmodel.h>
  35 #include <klocale.h>
  36 #include <kmenu.h>
  37
  38 #include <QAbstractProxyModel>
  39 #include <QAction>
  40 #include <QApplication>
  41 #include <QHeaderView>
  42 #include <QRubberBand>
  43 #include <QPainter>
  44 #include <QScrollBar>
  45
  46 DolphinDetailsView::DolphinDetailsView(QWidget* parent, DolphinController* controller) :
  47     QTreeView(parent),
  48         m_autoResize(true),
  49     m_controller(controller),
  50     m_selectionManager(0),
  51     m_font(),
  52     m_decorationSize(),
  53     m_showElasticBand(false),
  54     m_elasticBandOrigin(),
  55     m_elasticBandDestination()
  56 {
  57     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
  58     Q_ASSERT(settings != 0);
  59     Q_ASSERT(controller != 0);
  60
  61     setAcceptDrops(true);
  62     setSortingEnabled(true);
  63     setUniformRowHeights(true);
  64     setSelectionBehavior(SelectItems);
  65     setDragDropMode(QAbstractItemView::DragDrop);
  66     setDropIndicatorShown(false);
  67     setAlternatingRowColors(true);
  68     setRootIsDecorated(settings->expandableFolders());
  69     setItemsExpandable(settings->expandableFolders());
  70     setEditTriggers(QAbstractItemView::NoEditTriggers);
  71
  72     setMouseTracking(true);
  73
  74     const ViewProperties props(controller->url());
  75     setSortIndicatorSection(props.sorting());
  76     setSortIndicatorOrder(props.sortOrder());
  77
  78     QHeaderView* headerView = header();
  79     connect(headerView, SIGNAL(sectionClicked(int)),
  80             this, SLOT(synchronizeSortingState(int)));
  81     headerView->setContextMenuPolicy(Qt::CustomContextMenu);
  82     connect(headerView, SIGNAL(customContextMenuRequested(const QPoint&)),
  83             this, SLOT(configureColumns(const QPoint&)));
  84     connect(headerView, SIGNAL(sectionResized(int, int, int)),
  85             this, SLOT(slotHeaderSectionResized(int, int, int)));
  86     connect(headerView, SIGNAL(sectionHandleDoubleClicked(int)),
  87             this, SLOT(disableAutoResizing()));
  88
  89     connect(parent, SIGNAL(sortingChanged(DolphinView::Sorting)),
  90             this, SLOT(setSortIndicatorSection(DolphinView::Sorting)));
  91     connect(parent, SIGNAL(sortOrderChanged(Qt::SortOrder)),
  92             this, SLOT(setSortIndicatorOrder(Qt::SortOrder)));
  93
  94     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
  95     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
  96     // necessary connecting the signal 'singleClick()' or 'doubleClick' and to handle the
  97     // RETURN-key in keyPressEvent().
  98     if (KGlobalSettings::singleClick()) {
  99         connect(this, SIGNAL(clicked(const QModelIndex&)),
 100                 controller, SLOT(triggerItem(const QModelIndex&)));
 101         if (DolphinSettings::instance().generalSettings()->showSelectionToggle()) {
 102             m_selectionManager = new SelectionManager(this);
 103             connect(m_selectionManager, SIGNAL(selectionChanged()),
 104                     this, SLOT(requestActivation()));
 105             connect(m_controller, SIGNAL(urlChanged(const KUrl&)),
 106                     m_selectionManager, SLOT(reset()));
 107          }
 108     } else {
 109         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 110                 controller, SLOT(triggerItem(const QModelIndex&)));
 111     }
 112     connect(this, SIGNAL(entered(const QModelIndex&)),
 113             this, SLOT(slotEntered(const QModelIndex&)));
 114     connect(this, SIGNAL(viewportEntered()),
 115             controller, SLOT(emitViewportEntered()));
 116     connect(controller, SIGNAL(zoomIn()),
 117             this, SLOT(zoomIn()));
 118     connect(controller, SIGNAL(zoomOut()),
 119             this, SLOT(zoomOut()));
 120     connect(controller->dolphinView(), SIGNAL(additionalInfoChanged()),
 121             this, SLOT(updateColumnVisibility()));
 122
 123     if (settings->useSystemFont()) {
 124         m_font = KGlobalSettings::generalFont();
 125     } else {
 126         m_font = QFont(settings->fontFamily(),
 127                        settings->fontSize(),
 128                        settings->fontWeight(),
 129                        settings->italicFont());
 130     }
 131
 132     setVerticalScrollMode(QTreeView::ScrollPerPixel);
 133     setHorizontalScrollMode(QTreeView::ScrollPerPixel);
 134
 135     updateDecorationSize();
 136
 137     setFocus();
 138     viewport()->installEventFilter(this);
 139
 140     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 141             this, SLOT(updateFont()));
 142 }
 143
 144 DolphinDetailsView::~DolphinDetailsView()
 145 {
 146 }
 147
 148 bool DolphinDetailsView::event(QEvent* event)
 149 {
 150     if (event->type() == QEvent::Polish) {
 151         QHeaderView* headerView = header();
 152         headerView->setResizeMode(QHeaderView::Interactive);
 153         headerView->setMovable(false);
 154
 155         updateColumnVisibility();
 156
 157         hideColumn(DolphinModel::Rating);
 158         hideColumn(DolphinModel::Tags);
 159     } else if (event->type() == QEvent::UpdateRequest) {
 160         // a wheel movement will scroll 4 items
 161         if (model()->rowCount() > 0) {
 162             verticalScrollBar()->setSingleStep((sizeHintForRow(0) / 3) * 4);
 163         }
 164     }
 165
 166     return QTreeView::event(event);
 167 }
 168
 169 QStyleOptionViewItem DolphinDetailsView::viewOptions() const
 170 {
 171     QStyleOptionViewItem viewOptions = QTreeView::viewOptions();
 172     viewOptions.font = m_font;
 173     viewOptions.showDecorationSelected = true;
 174     viewOptions.decorationSize = m_decorationSize;
 175     return viewOptions;
 176 }
 177
 178 void DolphinDetailsView::contextMenuEvent(QContextMenuEvent* event)
 179 {
 180     QTreeView::contextMenuEvent(event);
 181     m_controller->triggerContextMenuRequest(event->pos());
 182 }
 183
 184 void DolphinDetailsView::mousePressEvent(QMouseEvent* event)
 185 {
 186     m_controller->requestActivation();
 187
 188     QTreeView::mousePressEvent(event);
 189
 190     const QModelIndex index = indexAt(event->pos());
 191     if (index.isValid() && (event->button() == Qt::LeftButton)) {
 192         // TODO: see comment in DolphinIconsView::mousePressEvent()
 193         setState(QAbstractItemView::DraggingState);
 194     }
 195
 196     if (!index.isValid() || (index.column() != DolphinModel::Name)) {
 197         const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 198         if (!(modifier & Qt::ShiftModifier) && !(modifier & Qt::ControlModifier)) {
 199             clearSelection();
 200         }
 201     }
 202
 203     if (event->button() == Qt::LeftButton) {
 204         m_showElasticBand = true;
 205
 206         const QPoint pos(contentsPos());
 207         m_elasticBandOrigin = event->pos();
 208         m_elasticBandOrigin.setX(m_elasticBandOrigin.x() + pos.x());
 209         m_elasticBandOrigin.setY(m_elasticBandOrigin.y() + pos.y());
 210         m_elasticBandDestination = event->pos();
 211     }
 212 }
 213
 214 void DolphinDetailsView::mouseMoveEvent(QMouseEvent* event)
 215 {
 216     if (m_showElasticBand) {
 217         const QPoint mousePos = event->pos();
 218         const QModelIndex index = indexAt(mousePos);
 219         if (!index.isValid()) {
 220             // the destination of the selection rectangle is above the viewport. In this
 221             // case QTreeView does no selection at all, which is not the wanted behavior
 222             // in Dolphin -> select all items within the elastic band rectangle
 223             clearSelection();
 224
 225             const int nameColumnWidth = header()->sectionSize(DolphinModel::Name);
 226             QRect selRect = QRect(m_elasticBandOrigin, m_elasticBandDestination).normalized();
 227             const QRect nameColumnsRect(0, 0, nameColumnWidth, viewport()->height());
 228             selRect = nameColumnsRect.intersected(selRect);
 229
 230             setSelection(selRect, QItemSelectionModel::Select);
 231         }
 232
 233         // TODO: enable QTreeView::mouseMoveEvent(event) again, as soon
 234         // as the Qt-issue #199631 has been fixed.
 235         // QTreeView::mouseMoveEvent(event);
 236         QAbstractItemView::mouseMoveEvent(event);
 237         updateElasticBand();
 238     } else {
 239         // TODO: enable QTreeView::mouseMoveEvent(event) again, as soon
 240         // as the Qt-issue #199631 has been fixed.
 241         // QTreeView::mouseMoveEvent(event);
 242         QAbstractItemView::mouseMoveEvent(event);
 243     }
 244 }
 245
 246 void DolphinDetailsView::mouseReleaseEvent(QMouseEvent* event)
 247 {
 248     QTreeView::mouseReleaseEvent(event);
 249     if (m_showElasticBand) {
 250         updateElasticBand();
 251         m_showElasticBand = false;
 252     }
 253 }
 254
 255 void DolphinDetailsView::startDrag(Qt::DropActions supportedActions)
 256 {
 257     DragAndDropHelper::startDrag(this, supportedActions);
 258     m_showElasticBand = false;
 259 }
 260
 261 void DolphinDetailsView::dragEnterEvent(QDragEnterEvent* event)
 262 {
 263     if (event->mimeData()->hasUrls()) {
 264         event->acceptProposedAction();
 265     }
 266
 267     if (m_showElasticBand) {
 268         updateElasticBand();
 269         m_showElasticBand = false;
 270     }
 271 }
 272
 273 void DolphinDetailsView::dragLeaveEvent(QDragLeaveEvent* event)
 274 {
 275     QTreeView::dragLeaveEvent(event);
 276     setDirtyRegion(m_dropRect);
 277 }
 278
 279 void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* event)
 280 {
 281     QTreeView::dragMoveEvent(event);
 282
 283     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 284     setDirtyRegion(m_dropRect);
 285     const QModelIndex index = indexAt(event->pos());
 286     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 287         const KFileItem item = m_controller->itemForIndex(index);
 288         if (!item.isNull() && item.isDir()) {
 289             m_dropRect = visualRect(index);
 290         } else {
 291             m_dropRect.setSize(QSize()); // set as invalid
 292         }
 293         setDirtyRegion(m_dropRect);
 294     }
 295
 296     if (event->mimeData()->hasUrls()) {
 297         // accept url drops, independently from the destination item
 298         event->acceptProposedAction();
 299     }
 300 }
 301
 302 void DolphinDetailsView::dropEvent(QDropEvent* event)
 303 {
 304     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 305     if (!urls.isEmpty()) {
 306         event->acceptProposedAction();
 307         const QModelIndex index = indexAt(event->pos());
 308         KFileItem item;
 309         if (index.isValid() && (index.column() == DolphinModel::Name)) {
 310             item = m_controller->itemForIndex(index);
 311         }
 312         m_controller->indicateDroppedUrls(urls,
 313                                           m_controller->url(),
 314                                           item);
 315     }
 316     QTreeView::dropEvent(event);
 317 }
 318
 319 void DolphinDetailsView::paintEvent(QPaintEvent* event)
 320 {
 321     QTreeView::paintEvent(event);
 322     if (m_showElasticBand) {
 323         // The following code has been taken from QListView
 324         // and adapted to DolphinDetailsView.
 325         // (C) 1992-2007 Trolltech ASA
 326         QStyleOptionRubberBand opt;
 327         opt.initFrom(this);
 328         opt.shape = QRubberBand::Rectangle;
 329         opt.opaque = false;
 330         opt.rect = elasticBandRect();
 331
 332         QPainter painter(viewport());
 333         painter.save();
 334         style()->drawControl(QStyle::CE_RubberBand, &opt, &painter);
 335         painter.restore();
 336     }
 337 }
 338
 339 void DolphinDetailsView::keyPressEvent(QKeyEvent* event)
 340 {
 341     QTreeView::keyPressEvent(event);
 342     m_controller->handleKeyPressEvent(event);
 343 }
 344
 345 void DolphinDetailsView::resizeEvent(QResizeEvent* event)
 346 {
 347     if (m_autoResize) {
 348         resizeColumns();
 349     }
 350     QTreeView::resizeEvent(event);
 351 }
 352
 353 void DolphinDetailsView::wheelEvent(QWheelEvent* event)
 354 {
 355     if (m_selectionManager != 0) {
 356         m_selectionManager->reset();
 357     }
 358
 359     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 360     if (event->modifiers() & Qt::ControlModifier) {
 361         event->ignore();
 362         return;
 363     }
 364
 365     QTreeView::wheelEvent(event);
 366 }
 367
 368 void DolphinDetailsView::currentChanged(const QModelIndex& current, const QModelIndex& previous)
 369 {
 370     QTreeView::currentChanged(current, previous);
 371
 372     // Stay consistent with QListView: When changing the current index by key presses,
 373     // also change the selection.
 374     if (QApplication::mouseButtons() == Qt::NoButton) {
 375         selectionModel()->select(current, QItemSelectionModel::ClearAndSelect);
 376     }
 377 }
 378
 379 bool DolphinDetailsView::eventFilter(QObject* watched, QEvent* event)
 380 {
 381     if ((watched == viewport()) && (event->type() == QEvent::Leave)) {
 382         // if the mouse is above an item and moved very fast outside the widget,
 383         // no viewportEntered() signal might be emitted although the mouse has been moved
 384         // above the viewport
 385         m_controller->emitViewportEntered();
 386     }
 387
 388     return QTreeView::eventFilter(watched, event);
 389 }
 390
 391 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
 392 {
 393     QHeaderView* headerView = header();
 394     headerView->setSortIndicator(sorting, headerView->sortIndicatorOrder());
 395 }
 396
 397 void DolphinDetailsView::setSortIndicatorOrder(Qt::SortOrder sortOrder)
 398 {
 399     QHeaderView* headerView = header();
 400     headerView->setSortIndicator(headerView->sortIndicatorSection(), sortOrder);
 401 }
 402
 403 void DolphinDetailsView::synchronizeSortingState(int column)
 404 {
 405     // The sorting has already been changed in QTreeView if this slot is
 406     // invoked, but Dolphin is not informed about this.
 407     DolphinView::Sorting sorting = DolphinSortFilterProxyModel::sortingForColumn(column);
 408     const Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
 409     m_controller->indicateSortingChange(sorting);
 410     m_controller->indicateSortOrderChange(sortOrder);
 411 }
 412
 413 void DolphinDetailsView::slotEntered(const QModelIndex& index)
 414 {
 415     const QPoint pos = viewport()->mapFromGlobal(QCursor::pos());
 416     const int nameColumnWidth = header()->sectionSize(DolphinModel::Name);
 417     if (pos.x() < nameColumnWidth) {
 418         m_controller->emitItemEntered(index);
 419     }
 420     else {
 421         m_controller->emitViewportEntered();
 422     }
 423 }
 424
 425 void DolphinDetailsView::updateElasticBand()
 426 {
 427     if (m_showElasticBand) {
 428         QRect dirtyRegion(elasticBandRect());
 429         m_elasticBandDestination = viewport()->mapFromGlobal(QCursor::pos());
 430         dirtyRegion = dirtyRegion.united(elasticBandRect());
 431         setDirtyRegion(dirtyRegion);
 432     }
 433 }
 434
 435 QRect DolphinDetailsView::elasticBandRect() const
 436 {
 437     const QPoint pos(contentsPos());
 438     const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
 439     return QRect(topLeft, m_elasticBandDestination).normalized();
 440 }
 441
 442 void DolphinDetailsView::zoomIn()
 443 {
 444     if (isZoomInPossible()) {
 445         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 446         switch (settings->iconSize()) {
 447         case KIconLoader::SizeSmall:  settings->setIconSize(KIconLoader::SizeMedium); break;
 448         case KIconLoader::SizeMedium: settings->setIconSize(KIconLoader::SizeLarge); break;
 449         default: Q_ASSERT(false); break;
 450         }
 451         updateDecorationSize();
 452     }
 453 }
 454
 455 void DolphinDetailsView::zoomOut()
 456 {
 457     if (isZoomOutPossible()) {
 458         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 459         switch (settings->iconSize()) {
 460         case KIconLoader::SizeLarge:  settings->setIconSize(KIconLoader::SizeMedium); break;
 461         case KIconLoader::SizeMedium: settings->setIconSize(KIconLoader::SizeSmall); break;
 462         default: Q_ASSERT(false); break;
 463         }
 464         updateDecorationSize();
 465     }
 466 }
 467
 468 void DolphinDetailsView::configureColumns(const QPoint& pos)
 469 {
 470     KMenu popup(this);
 471     popup.addTitle(i18nc("@title:menu", "Columns"));
 472
 473     QHeaderView* headerView = header();
 474     for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
 475         const int logicalIndex = headerView->logicalIndex(i);
 476         const QString text = model()->headerData(i, Qt::Horizontal).toString();
 477         QAction* action = popup.addAction(text);
 478         action->setCheckable(true);
 479         action->setChecked(!headerView->isSectionHidden(logicalIndex));
 480         action->setData(i);
 481     }
 482
 483     QAction* activatedAction = popup.exec(header()->mapToGlobal(pos));
 484     if (activatedAction != 0) {
 485         const bool show = activatedAction->isChecked();
 486         const int columnIndex = activatedAction->data().toInt();
 487
 488         KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
 489         const KFileItemDelegate::Information info = infoForColumn(columnIndex);
 490         if (show) {
 491             Q_ASSERT(!list.contains(info));
 492             list.append(info);
 493         } else {
 494             Q_ASSERT(list.contains(info));
 495             const int index = list.indexOf(info);
 496             list.removeAt(index);
 497         }
 498
 499         m_controller->indicateAdditionalInfoChange(list);
 500         setColumnHidden(columnIndex, !show);
 501     }
 502 }
 503
 504 void DolphinDetailsView::updateColumnVisibility()
 505 {
 506     const KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
 507     for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
 508         const KFileItemDelegate::Information info = infoForColumn(i);
 509         const bool hide = !list.contains(info);
 510         if (isColumnHidden(i) != hide) {
 511             setColumnHidden(i, hide);
 512         }
 513     }
 514
 515     resizeColumns();
 516 }
 517
 518 void DolphinDetailsView::slotHeaderSectionResized(int logicalIndex, int oldSize, int newSize)
 519 {
 520     Q_UNUSED(logicalIndex);
 521     Q_UNUSED(oldSize);
 522     Q_UNUSED(newSize);
 523     if (QApplication::mouseButtons() & Qt::LeftButton) {
 524         disableAutoResizing();
 525     }
 526 }
 527
 528 void DolphinDetailsView::disableAutoResizing()
 529 {
 530     m_autoResize = false;
 531 }
 532
 533 void DolphinDetailsView::requestActivation()
 534 {
 535     m_controller->requestActivation();
 536 }
 537
 538 void DolphinDetailsView::updateFont()
 539 {
 540     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 541     Q_ASSERT(settings != 0);
 542
 543     if (settings->useSystemFont()) {
 544         m_font = KGlobalSettings::generalFont();
 545     }
 546 }
 547
 548 bool DolphinDetailsView::isZoomInPossible() const
 549 {
 550     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 551     return settings->iconSize() < KIconLoader::SizeLarge;
 552 }
 553
 554 bool DolphinDetailsView::isZoomOutPossible() const
 555 {
 556     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 557     return settings->iconSize() > KIconLoader::SizeSmall;
 558 }
 559
 560 void DolphinDetailsView::updateDecorationSize()
 561 {
 562     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 563     const int iconSize = settings->iconSize();
 564     setIconSize(QSize(iconSize, iconSize));
 565     m_decorationSize = QSize(iconSize, iconSize);
 566
 567     m_controller->setZoomInPossible(isZoomInPossible());
 568     m_controller->setZoomOutPossible(isZoomOutPossible());
 569
 570     if (m_selectionManager != 0) {
 571         m_selectionManager->reset();
 572     }
 573
 574     doItemsLayout();
 575 }
 576
 577 QPoint DolphinDetailsView::contentsPos() const
 578 {
 579     // implementation note: the horizonal position is ignored currently, as no
 580     // horizontal scrolling is done anyway during a selection
 581     const QScrollBar* scrollbar = verticalScrollBar();
 582     Q_ASSERT(scrollbar != 0);
 583
 584     const int maxHeight = maximumViewportSize().height();
 585     const int height = scrollbar->maximum() - scrollbar->minimum() + 1;
 586     const int visibleHeight = model()->rowCount() + 1 - height;
 587     if (visibleHeight <= 0) {
 588         return QPoint(0, 0);
 589     }
 590
 591     const int y = scrollbar->sliderPosition() * maxHeight / visibleHeight;
 592     return QPoint(0, y);
 593 }
 594
 595 KFileItemDelegate::Information DolphinDetailsView::infoForColumn(int columnIndex) const
 596 {
 597     KFileItemDelegate::Information info = KFileItemDelegate::NoInformation;
 598
 599     switch (columnIndex) {
 600     case DolphinModel::Size:         info = KFileItemDelegate::Size; break;
 601     case DolphinModel::ModifiedTime: info = KFileItemDelegate::ModificationTime; break;
 602     case DolphinModel::Permissions:  info = KFileItemDelegate::Permissions; break;
 603     case DolphinModel::Owner:        info = KFileItemDelegate::Owner; break;
 604     case DolphinModel::Group:        info = KFileItemDelegate::OwnerAndGroup; break;
 605     case DolphinModel::Type:         info = KFileItemDelegate::FriendlyMimeType; break;
 606     default: break;
 607     }
 608
 609     return info;
 610 }
 611
 612 void DolphinDetailsView::resizeColumns()
 613 {
 614     // Using the resize mode QHeaderView::ResizeToContents is too slow (it takes
 615     // around 3 seconds for each (!) resize operation when having > 10000 items).
 616     // This gets a problem especially when opening large directories, where several
 617     // resize operations are received for showing the currently available items during
 618     // loading (the application hangs around 20 seconds when loading > 10000 items).
 619
 620     QHeaderView* headerView = header();
 621     QFontMetrics fontMetrics(viewport()->font());
 622
 623     int columnWidth[KDirModel::ColumnCount];
 624     columnWidth[KDirModel::Size] = fontMetrics.width("00000 Items");
 625     columnWidth[KDirModel::ModifiedTime] = fontMetrics.width("0000-00-00 00:00");
 626     columnWidth[KDirModel::Permissions] = fontMetrics.width("xxxxxxxxxx");
 627     columnWidth[KDirModel::Owner] = fontMetrics.width("xxxxxxxxxx");
 628     columnWidth[KDirModel::Group] = fontMetrics.width("xxxxxxxxxx");
 629     columnWidth[KDirModel::Type] = fontMetrics.width("XXXX Xxxxxxx");
 630
 631     int requiredWidth = 0;
 632     for (int i = KDirModel::Size; i <= KDirModel::Type; ++i) {
 633         if (!isColumnHidden(i)) {
 634             columnWidth[i] += 20; // provide a default gap
 635             requiredWidth += columnWidth[i];
 636             headerView->resizeSection(i, columnWidth[i]);
 637         }
 638     }
 639
 640     // resize the name column in a way that the whole available width is used
 641     columnWidth[KDirModel::Name] = viewport()->width() - requiredWidth;
 642     if (columnWidth[KDirModel::Name] < 120) {
 643         columnWidth[KDirModel::Name] = 120;
 644     }
 645     headerView->resizeSection(KDirModel::Name, columnWidth[KDirModel::Name]);
 646 }
 647
 648 #include "dolphindetailsview.moc"