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_font(),
  51     m_decorationSize(),
  52     m_dragging(false),
  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
  71     setMouseTracking(true);
  72     viewport()->setAttribute(Qt::WA_Hover);
  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                 this, SLOT(triggerItem(const QModelIndex&)));
 101         if (DolphinSettings::instance().generalSettings()->showSelectionToggle()) {
 102             SelectionManager* selManager = new SelectionManager(this);
 103             connect(selManager, SIGNAL(selectionChanged()),
 104                     this, SLOT(requestActivation()));
 105             connect(m_controller, SIGNAL(urlChanged(const KUrl&)),
 106                     selManager, SLOT(reset()));
 107         }
 108     } else {
 109         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 110                 this, 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     m_font = QFont(settings->fontFamily(), settings->fontSize());
 124
 125 // TODO: Remove this check when 4.3.2 is released and KDE requires it... this
 126 //       check avoids a division by zero happening on versions before 4.3.1.
 127 //       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
 128 //       ereslibre
 129 #if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
 130     setVerticalScrollMode(QTreeView::ScrollPerPixel);
 131     setHorizontalScrollMode(QTreeView::ScrollPerPixel);
 132 #endif
 133
 134     updateDecorationSize();
 135
 136     setFocus();
 137 }
 138
 139 DolphinDetailsView::~DolphinDetailsView()
 140 {
 141 }
 142
 143 bool DolphinDetailsView::event(QEvent* event)
 144 {
 145     if (event->type() == QEvent::Polish) {
 146         QHeaderView* headerView = header();
 147         headerView->setResizeMode(QHeaderView::Interactive);
 148         headerView->setMovable(false);
 149
 150         updateColumnVisibility();
 151
 152         hideColumn(DolphinModel::Rating);
 153         hideColumn(DolphinModel::Tags);
 154     }
 155 // TODO: Remove this check when 4.3.2 is released and KDE requires it... this
 156 //       check avoids a division by zero happening on versions before 4.3.1.
 157 //       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
 158 //       ereslibre
 159 #if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
 160     else if (event->type() == QEvent::UpdateRequest) {
 161         // a wheel movement will scroll 4 items
 162         if (model()->rowCount() > 0) {
 163             verticalScrollBar()->setSingleStep((sizeHintForRow(0) / 3) * 4);
 164         }
 165     }
 166 #endif
 167
 168     return QTreeView::event(event);
 169 }
 170
 171 QStyleOptionViewItem DolphinDetailsView::viewOptions() const
 172 {
 173     QStyleOptionViewItem viewOptions = QTreeView::viewOptions();
 174     viewOptions.font = m_font;
 175     viewOptions.showDecorationSelected = true;
 176     viewOptions.decorationSize = m_decorationSize;
 177     return viewOptions;
 178 }
 179
 180 void DolphinDetailsView::contextMenuEvent(QContextMenuEvent* event)
 181 {
 182     QTreeView::contextMenuEvent(event);
 183     m_controller->triggerContextMenuRequest(event->pos());
 184 }
 185
 186 void DolphinDetailsView::mousePressEvent(QMouseEvent* event)
 187 {
 188     m_controller->requestActivation();
 189
 190     QTreeView::mousePressEvent(event);
 191
 192     const QModelIndex index = indexAt(event->pos());
 193     if (!index.isValid() || (index.column() != DolphinModel::Name)) {
 194         const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 195         if (!(modifier & Qt::ShiftModifier) && !(modifier & Qt::ControlModifier)) {
 196             clearSelection();
 197         }
 198     }
 199
 200     if (event->button() == Qt::LeftButton) {
 201         m_showElasticBand = true;
 202
 203         const QPoint pos(contentsPos());
 204         m_elasticBandOrigin = event->pos();
 205         m_elasticBandOrigin.setX(m_elasticBandOrigin.x() + pos.x());
 206         m_elasticBandOrigin.setY(m_elasticBandOrigin.y() + pos.y());
 207         m_elasticBandDestination = event->pos();
 208     }
 209 }
 210
 211 void DolphinDetailsView::mouseMoveEvent(QMouseEvent* event)
 212 {
 213     if (m_showElasticBand) {
 214         const QPoint mousePos = event->pos();
 215         const QModelIndex index = indexAt(mousePos);
 216         if (!index.isValid()) {
 217             // the destination of the selection rectangle is above the viewport. In this
 218             // case QTreeView does no selection at all, which is not the wanted behavior
 219             // in Dolphin -> select all items within the elastic band rectangle
 220             clearSelection();
 221
 222             const int nameColumnWidth = header()->sectionSize(DolphinModel::Name);
 223             QRect selRect = QRect(m_elasticBandOrigin, m_elasticBandDestination).normalized();
 224             const QRect nameColumnsRect(0, 0, nameColumnWidth, viewport()->height());
 225             selRect = nameColumnsRect.intersected(selRect);
 226
 227             setSelection(selRect, QItemSelectionModel::Select);
 228         }
 229
 230         QTreeView::mouseMoveEvent(event);
 231         updateElasticBand();
 232     } else {
 233         QTreeView::mouseMoveEvent(event);
 234     }
 235 }
 236
 237 void DolphinDetailsView::mouseReleaseEvent(QMouseEvent* event)
 238 {
 239     QTreeView::mouseReleaseEvent(event);
 240     if (m_showElasticBand) {
 241         updateElasticBand();
 242         m_showElasticBand = false;
 243     }
 244 }
 245
 246 void DolphinDetailsView::startDrag(Qt::DropActions supportedActions)
 247 {
 248     DragAndDropHelper::startDrag(this, supportedActions);
 249 }
 250
 251 void DolphinDetailsView::dragEnterEvent(QDragEnterEvent* event)
 252 {
 253     if (event->mimeData()->hasUrls()) {
 254         event->acceptProposedAction();
 255     }
 256
 257     if (m_showElasticBand) {
 258         updateElasticBand();
 259         m_showElasticBand = false;
 260     }
 261     m_dragging = true;
 262 }
 263
 264 void DolphinDetailsView::dragLeaveEvent(QDragLeaveEvent* event)
 265 {
 266     QTreeView::dragLeaveEvent(event);
 267
 268     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 269     m_dragging = false;
 270     setDirtyRegion(m_dropRect);
 271 }
 272
 273 void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* event)
 274 {
 275     QTreeView::dragMoveEvent(event);
 276
 277     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 278     setDirtyRegion(m_dropRect);
 279     const QModelIndex index = indexAt(event->pos());
 280     if (!index.isValid() || (index.column() != DolphinModel::Name)) {
 281         m_dragging = false;
 282     } else {
 283         m_dragging = true;
 284         const KFileItem item = itemForIndex(index);
 285         if (!item.isNull() && item.isDir()) {
 286             m_dropRect = visualRect(index);
 287         } else {
 288             m_dropRect.setSize(QSize()); // set as invalid
 289         }
 290         setDirtyRegion(m_dropRect);
 291     }
 292
 293     if (event->mimeData()->hasUrls()) {
 294         // accept url drops, independently from the destination item
 295         event->acceptProposedAction();
 296     }
 297 }
 298
 299 void DolphinDetailsView::dropEvent(QDropEvent* event)
 300 {
 301     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 302     if (!urls.isEmpty()) {
 303         event->acceptProposedAction();
 304         const QModelIndex index = indexAt(event->pos());
 305         KFileItem item;
 306         if (index.isValid() && (index.column() == DolphinModel::Name)) {
 307             item = itemForIndex(index);
 308         }
 309         m_controller->indicateDroppedUrls(urls,
 310                                           m_controller->url(),
 311                                           item);
 312     }
 313     QTreeView::dropEvent(event);
 314     m_dragging = false;
 315 }
 316
 317 void DolphinDetailsView::paintEvent(QPaintEvent* event)
 318 {
 319     QTreeView::paintEvent(event);
 320     if (m_showElasticBand) {
 321         // The following code has been taken from QListView
 322         // and adapted to DolphinDetailsView.
 323         // (C) 1992-2007 Trolltech ASA
 324         QStyleOptionRubberBand opt;
 325         opt.initFrom(this);
 326         opt.shape = QRubberBand::Rectangle;
 327         opt.opaque = false;
 328         opt.rect = elasticBandRect();
 329
 330         QPainter painter(viewport());
 331         painter.save();
 332         style()->drawControl(QStyle::CE_RubberBand, &opt, &painter);
 333         painter.restore();
 334     }
 335
 336     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 337     if (m_dragging) {
 338         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 339         DragAndDropHelper::drawHoverIndication(this, m_dropRect, brush);
 340     }
 341 }
 342
 343 void DolphinDetailsView::keyPressEvent(QKeyEvent* event)
 344 {
 345     QTreeView::keyPressEvent(event);
 346
 347     const QItemSelectionModel* selModel = selectionModel();
 348     const QModelIndex currentIndex = selModel->currentIndex();
 349     const bool trigger = currentIndex.isValid()
 350                          && (event->key() == Qt::Key_Return)
 351                          && (selModel->selectedIndexes().count() <= 1);
 352     if (trigger) {
 353         triggerItem(currentIndex);
 354     }
 355 }
 356
 357 void DolphinDetailsView::resizeEvent(QResizeEvent* event)
 358 {
 359     if (m_autoResize) {
 360         resizeColumns();
 361     }
 362     QTreeView::resizeEvent(event);
 363 }
 364
 365 void DolphinDetailsView::wheelEvent(QWheelEvent* event)
 366 {
 367     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 368     if ((event->modifiers() & Qt::ControlModifier) == Qt::ControlModifier) {
 369         event->ignore();
 370         return;
 371     }
 372     QTreeView::wheelEvent(event);
 373 }
 374
 375 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
 376 {
 377     QHeaderView* headerView = header();
 378     headerView->setSortIndicator(sorting, headerView->sortIndicatorOrder());
 379 }
 380
 381 void DolphinDetailsView::setSortIndicatorOrder(Qt::SortOrder sortOrder)
 382 {
 383     QHeaderView* headerView = header();
 384     headerView->setSortIndicator(headerView->sortIndicatorSection(), sortOrder);
 385 }
 386
 387 void DolphinDetailsView::synchronizeSortingState(int column)
 388 {
 389     // The sorting has already been changed in QTreeView if this slot is
 390     // invoked, but Dolphin is not informed about this.
 391     DolphinView::Sorting sorting = DolphinSortFilterProxyModel::sortingForColumn(column);
 392     const Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
 393     m_controller->indicateSortingChange(sorting);
 394     m_controller->indicateSortOrderChange(sortOrder);
 395 }
 396
 397 void DolphinDetailsView::slotEntered(const QModelIndex& index)
 398 {
 399     const QPoint pos = viewport()->mapFromGlobal(QCursor::pos());
 400     const int nameColumnWidth = header()->sectionSize(DolphinModel::Name);
 401     if (pos.x() < nameColumnWidth) {
 402         m_controller->emitItemEntered(itemForIndex(index));
 403     }
 404     else {
 405         m_controller->emitViewportEntered();
 406     }
 407 }
 408
 409 void DolphinDetailsView::updateElasticBand()
 410 {
 411     if (m_showElasticBand) {
 412         QRect dirtyRegion(elasticBandRect());
 413         m_elasticBandDestination = viewport()->mapFromGlobal(QCursor::pos());
 414         dirtyRegion = dirtyRegion.united(elasticBandRect());
 415         setDirtyRegion(dirtyRegion);
 416     }
 417 }
 418
 419 QRect DolphinDetailsView::elasticBandRect() const
 420 {
 421     const QPoint pos(contentsPos());
 422     const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
 423     return QRect(topLeft, m_elasticBandDestination).normalized();
 424 }
 425
 426 void DolphinDetailsView::zoomIn()
 427 {
 428     if (isZoomInPossible()) {
 429         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 430         switch (settings->iconSize()) {
 431         case KIconLoader::SizeSmall:  settings->setIconSize(KIconLoader::SizeMedium); break;
 432         case KIconLoader::SizeMedium: settings->setIconSize(KIconLoader::SizeLarge); break;
 433         default: Q_ASSERT(false); break;
 434         }
 435         updateDecorationSize();
 436     }
 437 }
 438
 439 void DolphinDetailsView::zoomOut()
 440 {
 441     if (isZoomOutPossible()) {
 442         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 443         switch (settings->iconSize()) {
 444         case KIconLoader::SizeLarge:  settings->setIconSize(KIconLoader::SizeMedium); break;
 445         case KIconLoader::SizeMedium: settings->setIconSize(KIconLoader::SizeSmall); break;
 446         default: Q_ASSERT(false); break;
 447         }
 448         updateDecorationSize();
 449     }
 450 }
 451
 452 void DolphinDetailsView::triggerItem(const QModelIndex& index)
 453 {
 454     const KFileItem item = itemForIndex(index);
 455     if (index.isValid() && (index.column() == KDirModel::Name)) {
 456         m_controller->triggerItem(item);
 457     } else {
 458         clearSelection();
 459         m_controller->emitItemEntered(item);
 460     }
 461 }
 462
 463 void DolphinDetailsView::configureColumns(const QPoint& pos)
 464 {
 465     KMenu popup(this);
 466     popup.addTitle(i18nc("@title:menu", "Columns"));
 467
 468     QHeaderView* headerView = header();
 469     for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
 470         const int logicalIndex = headerView->logicalIndex(i);
 471         const QString text = model()->headerData(i, Qt::Horizontal).toString();
 472         QAction* action = popup.addAction(text);
 473         action->setCheckable(true);
 474         action->setChecked(!headerView->isSectionHidden(logicalIndex));
 475         action->setData(i);
 476     }
 477
 478     QAction* activatedAction = popup.exec(header()->mapToGlobal(pos));
 479     if (activatedAction != 0) {
 480         const bool show = activatedAction->isChecked();
 481         const int columnIndex = activatedAction->data().toInt();
 482
 483         KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
 484         const KFileItemDelegate::Information info = infoForColumn(columnIndex);
 485         if (show) {
 486             Q_ASSERT(!list.contains(info));
 487             list.append(info);
 488         } else {
 489             Q_ASSERT(list.contains(info));
 490             const int index = list.indexOf(info);
 491             list.removeAt(index);
 492         }
 493
 494         m_controller->indicateAdditionalInfoChange(list);
 495         setColumnHidden(columnIndex, !show);
 496     }
 497 }
 498
 499 void DolphinDetailsView::updateColumnVisibility()
 500 {
 501     const KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
 502     for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
 503         const KFileItemDelegate::Information info = infoForColumn(i);
 504         const bool hide = !list.contains(info);
 505         if (isColumnHidden(i) != hide) {
 506             setColumnHidden(i, hide);
 507         }
 508     }
 509
 510     resizeColumns();
 511 }
 512
 513 void DolphinDetailsView::slotHeaderSectionResized(int logicalIndex, int oldSize, int newSize)
 514 {
 515     Q_UNUSED(logicalIndex);
 516     Q_UNUSED(oldSize);
 517     Q_UNUSED(newSize);
 518     if (QApplication::mouseButtons() & Qt::LeftButton) {
 519         disableAutoResizing();
 520     }
 521 }
 522
 523 void DolphinDetailsView::disableAutoResizing()
 524 {
 525     m_autoResize = false;
 526 }
 527
 528 void DolphinDetailsView::requestActivation()
 529 {
 530     m_controller->requestActivation();
 531 }
 532
 533 bool DolphinDetailsView::isZoomInPossible() const
 534 {
 535     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 536     return settings->iconSize() < KIconLoader::SizeLarge;
 537 }
 538
 539 bool DolphinDetailsView::isZoomOutPossible() const
 540 {
 541     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 542     return settings->iconSize() > KIconLoader::SizeSmall;
 543 }
 544
 545 void DolphinDetailsView::updateDecorationSize()
 546 {
 547     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 548     const int iconSize = settings->iconSize();
 549     setIconSize(QSize(iconSize, iconSize));
 550     m_decorationSize = QSize(iconSize, iconSize);
 551
 552     m_controller->setZoomInPossible(isZoomInPossible());
 553     m_controller->setZoomOutPossible(isZoomOutPossible());
 554
 555     doItemsLayout();
 556 }
 557
 558 QPoint DolphinDetailsView::contentsPos() const
 559 {
 560     // implementation note: the horizonal position is ignored currently, as no
 561     // horizontal scrolling is done anyway during a selection
 562     const QScrollBar* scrollbar = verticalScrollBar();
 563     Q_ASSERT(scrollbar != 0);
 564
 565     const int maxHeight = maximumViewportSize().height();
 566     const int height = scrollbar->maximum() - scrollbar->minimum() + 1;
 567     const int visibleHeight = model()->rowCount() + 1 - height;
 568     if (visibleHeight <= 0) {
 569         return QPoint(0, 0);
 570     }
 571
 572     const int y = scrollbar->sliderPosition() * maxHeight / visibleHeight;
 573     return QPoint(0, y);
 574 }
 575
 576 KFileItem DolphinDetailsView::itemForIndex(const QModelIndex& index) const
 577 {
 578     QAbstractProxyModel* proxyModel = static_cast<QAbstractProxyModel*>(model());
 579     KDirModel* dirModel = static_cast<KDirModel*>(proxyModel->sourceModel());
 580     const QModelIndex dirIndex = proxyModel->mapToSource(index);
 581     return dirModel->itemForIndex(dirIndex);
 582 }
 583
 584 KFileItemDelegate::Information DolphinDetailsView::infoForColumn(int columnIndex) const
 585 {
 586     KFileItemDelegate::Information info = KFileItemDelegate::NoInformation;
 587
 588     switch (columnIndex) {
 589     case DolphinModel::Size:         info = KFileItemDelegate::Size; break;
 590     case DolphinModel::ModifiedTime: info = KFileItemDelegate::ModificationTime; break;
 591     case DolphinModel::Permissions:  info = KFileItemDelegate::Permissions; break;
 592     case DolphinModel::Owner:        info = KFileItemDelegate::Owner; break;
 593     case DolphinModel::Group:        info = KFileItemDelegate::OwnerAndGroup; break;
 594     case DolphinModel::Type:         info = KFileItemDelegate::FriendlyMimeType; break;
 595     default: break;
 596     }
 597
 598     return info;
 599 }
 600
 601 void DolphinDetailsView::resizeColumns()
 602 {
 603     // Using the resize mode QHeaderView::ResizeToContents is too slow (it takes
 604     // around 3 seconds for each (!) resize operation when having > 10000 items).
 605     // This gets a problem especially when opening large directories, where several
 606     // resize operations are received for showing the currently available items during
 607     // loading (the application hangs around 20 seconds when loading > 10000 items).
 608
 609     QHeaderView* headerView = header();
 610     QFontMetrics fontMetrics(viewport()->font());
 611
 612     int columnWidth[KDirModel::ColumnCount];
 613     columnWidth[KDirModel::Size] = fontMetrics.width("00000 Items");
 614     columnWidth[KDirModel::ModifiedTime] = fontMetrics.width("0000-00-00 00:00");
 615     columnWidth[KDirModel::Permissions] = fontMetrics.width("xxxxxxxxxx");
 616     columnWidth[KDirModel::Owner] = fontMetrics.width("xxxxxxxxxx");
 617     columnWidth[KDirModel::Group] = fontMetrics.width("xxxxxxxxxx");
 618     columnWidth[KDirModel::Type] = fontMetrics.width("XXXX Xxxxxxx");
 619
 620     int requiredWidth = 0;
 621     for (int i = KDirModel::Size; i <= KDirModel::Type; ++i) {
 622         if (!isColumnHidden(i)) {
 623             columnWidth[i] += 20; // provide a default gap
 624             requiredWidth += columnWidth[i];
 625             headerView->resizeSection(i, columnWidth[i]);
 626         }
 627     }
 628
 629     // resize the name column in a way that the whole available width is used
 630     columnWidth[KDirModel::Name] = viewport()->width() - requiredWidth;
 631     if (columnWidth[KDirModel::Name] < 120) {
 632         columnWidth[KDirModel::Name] = 120;
 633     }
 634     headerView->resizeSection(KDirModel::Name, columnWidth[KDirModel::Name]);
 635 }
 636
 637 #include "dolphindetailsview.moc"