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