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                 controller, 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                 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
 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     m_dragging = true;
 265 }
 266
 267 void DolphinDetailsView::dragLeaveEvent(QDragLeaveEvent* event)
 268 {
 269     QTreeView::dragLeaveEvent(event);
 270
 271     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 272     m_dragging = false;
 273     setDirtyRegion(m_dropRect);
 274 }
 275
 276 void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* event)
 277 {
 278     QTreeView::dragMoveEvent(event);
 279
 280     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 281     setDirtyRegion(m_dropRect);
 282     const QModelIndex index = indexAt(event->pos());
 283     if (!index.isValid() || (index.column() != DolphinModel::Name)) {
 284         m_dragging = false;
 285     } else {
 286         m_dragging = true;
 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     m_dragging = false;
 318 }
 319
 320 void DolphinDetailsView::paintEvent(QPaintEvent* event)
 321 {
 322     QTreeView::paintEvent(event);
 323     if (m_showElasticBand) {
 324         // The following code has been taken from QListView
 325         // and adapted to DolphinDetailsView.
 326         // (C) 1992-2007 Trolltech ASA
 327         QStyleOptionRubberBand opt;
 328         opt.initFrom(this);
 329         opt.shape = QRubberBand::Rectangle;
 330         opt.opaque = false;
 331         opt.rect = elasticBandRect();
 332
 333         QPainter painter(viewport());
 334         painter.save();
 335         style()->drawControl(QStyle::CE_RubberBand, &opt, &painter);
 336         painter.restore();
 337     }
 338
 339     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 340     if (m_dragging) {
 341         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 342         DragAndDropHelper::drawHoverIndication(this, m_dropRect, brush);
 343     }
 344 }
 345
 346 void DolphinDetailsView::keyPressEvent(QKeyEvent* event)
 347 {
 348     QTreeView::keyPressEvent(event);
 349     m_controller->handleKeyPressEvent(event);
 350 }
 351
 352 void DolphinDetailsView::resizeEvent(QResizeEvent* event)
 353 {
 354     if (m_autoResize) {
 355         resizeColumns();
 356     }
 357     QTreeView::resizeEvent(event);
 358 }
 359
 360 void DolphinDetailsView::wheelEvent(QWheelEvent* event)
 361 {
 362     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 363     if (event->modifiers() & Qt::ControlModifier) {
 364         event->ignore();
 365         return;
 366     }
 367     QTreeView::wheelEvent(event);
 368 }
 369
 370 void DolphinDetailsView::currentChanged(const QModelIndex& current, const QModelIndex& previous)
 371 {
 372     QTreeView::currentChanged(current, previous);
 373     selectionModel()->select(current, QItemSelectionModel::ClearAndSelect);
 374 }
 375
 376 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
 377 {
 378     QHeaderView* headerView = header();
 379     headerView->setSortIndicator(sorting, headerView->sortIndicatorOrder());
 380 }
 381
 382 void DolphinDetailsView::setSortIndicatorOrder(Qt::SortOrder sortOrder)
 383 {
 384     QHeaderView* headerView = header();
 385     headerView->setSortIndicator(headerView->sortIndicatorSection(), sortOrder);
 386 }
 387
 388 void DolphinDetailsView::synchronizeSortingState(int column)
 389 {
 390     // The sorting has already been changed in QTreeView if this slot is
 391     // invoked, but Dolphin is not informed about this.
 392     DolphinView::Sorting sorting = DolphinSortFilterProxyModel::sortingForColumn(column);
 393     const Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
 394     m_controller->indicateSortingChange(sorting);
 395     m_controller->indicateSortOrderChange(sortOrder);
 396 }
 397
 398 void DolphinDetailsView::slotEntered(const QModelIndex& index)
 399 {
 400     const QPoint pos = viewport()->mapFromGlobal(QCursor::pos());
 401     const int nameColumnWidth = header()->sectionSize(DolphinModel::Name);
 402     if (pos.x() < nameColumnWidth) {
 403         m_controller->emitItemEntered(index);
 404     }
 405     else {
 406         m_controller->emitViewportEntered();
 407     }
 408 }
 409
 410 void DolphinDetailsView::updateElasticBand()
 411 {
 412     if (m_showElasticBand) {
 413         QRect dirtyRegion(elasticBandRect());
 414         m_elasticBandDestination = viewport()->mapFromGlobal(QCursor::pos());
 415         dirtyRegion = dirtyRegion.united(elasticBandRect());
 416         setDirtyRegion(dirtyRegion);
 417     }
 418 }
 419
 420 QRect DolphinDetailsView::elasticBandRect() const
 421 {
 422     const QPoint pos(contentsPos());
 423     const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
 424     return QRect(topLeft, m_elasticBandDestination).normalized();
 425 }
 426
 427 void DolphinDetailsView::zoomIn()
 428 {
 429     if (isZoomInPossible()) {
 430         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 431         switch (settings->iconSize()) {
 432         case KIconLoader::SizeSmall:  settings->setIconSize(KIconLoader::SizeMedium); break;
 433         case KIconLoader::SizeMedium: settings->setIconSize(KIconLoader::SizeLarge); break;
 434         default: Q_ASSERT(false); break;
 435         }
 436         updateDecorationSize();
 437     }
 438 }
 439
 440 void DolphinDetailsView::zoomOut()
 441 {
 442     if (isZoomOutPossible()) {
 443         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 444         switch (settings->iconSize()) {
 445         case KIconLoader::SizeLarge:  settings->setIconSize(KIconLoader::SizeMedium); break;
 446         case KIconLoader::SizeMedium: settings->setIconSize(KIconLoader::SizeSmall); break;
 447         default: Q_ASSERT(false); break;
 448         }
 449         updateDecorationSize();
 450     }
 451 }
 452
 453 void DolphinDetailsView::configureColumns(const QPoint& pos)
 454 {
 455     KMenu popup(this);
 456     popup.addTitle(i18nc("@title:menu", "Columns"));
 457
 458     QHeaderView* headerView = header();
 459     for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
 460         const int logicalIndex = headerView->logicalIndex(i);
 461         const QString text = model()->headerData(i, Qt::Horizontal).toString();
 462         QAction* action = popup.addAction(text);
 463         action->setCheckable(true);
 464         action->setChecked(!headerView->isSectionHidden(logicalIndex));
 465         action->setData(i);
 466     }
 467
 468     QAction* activatedAction = popup.exec(header()->mapToGlobal(pos));
 469     if (activatedAction != 0) {
 470         const bool show = activatedAction->isChecked();
 471         const int columnIndex = activatedAction->data().toInt();
 472
 473         KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
 474         const KFileItemDelegate::Information info = infoForColumn(columnIndex);
 475         if (show) {
 476             Q_ASSERT(!list.contains(info));
 477             list.append(info);
 478         } else {
 479             Q_ASSERT(list.contains(info));
 480             const int index = list.indexOf(info);
 481             list.removeAt(index);
 482         }
 483
 484         m_controller->indicateAdditionalInfoChange(list);
 485         setColumnHidden(columnIndex, !show);
 486     }
 487 }
 488
 489 void DolphinDetailsView::updateColumnVisibility()
 490 {
 491     const KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
 492     for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
 493         const KFileItemDelegate::Information info = infoForColumn(i);
 494         const bool hide = !list.contains(info);
 495         if (isColumnHidden(i) != hide) {
 496             setColumnHidden(i, hide);
 497         }
 498     }
 499
 500     resizeColumns();
 501 }
 502
 503 void DolphinDetailsView::slotHeaderSectionResized(int logicalIndex, int oldSize, int newSize)
 504 {
 505     Q_UNUSED(logicalIndex);
 506     Q_UNUSED(oldSize);
 507     Q_UNUSED(newSize);
 508     if (QApplication::mouseButtons() & Qt::LeftButton) {
 509         disableAutoResizing();
 510     }
 511 }
 512
 513 void DolphinDetailsView::disableAutoResizing()
 514 {
 515     m_autoResize = false;
 516 }
 517
 518 void DolphinDetailsView::requestActivation()
 519 {
 520     m_controller->requestActivation();
 521 }
 522
 523 void DolphinDetailsView::updateFont()
 524 {
 525     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 526     Q_ASSERT(settings != 0);
 527
 528     if (settings->useSystemFont()) {
 529         m_font = KGlobalSettings::generalFont();
 530     }
 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 KFileItemDelegate::Information DolphinDetailsView::infoForColumn(int columnIndex) const
 577 {
 578     KFileItemDelegate::Information info = KFileItemDelegate::NoInformation;
 579
 580     switch (columnIndex) {
 581     case DolphinModel::Size:         info = KFileItemDelegate::Size; break;
 582     case DolphinModel::ModifiedTime: info = KFileItemDelegate::ModificationTime; break;
 583     case DolphinModel::Permissions:  info = KFileItemDelegate::Permissions; break;
 584     case DolphinModel::Owner:        info = KFileItemDelegate::Owner; break;
 585     case DolphinModel::Group:        info = KFileItemDelegate::OwnerAndGroup; break;
 586     case DolphinModel::Type:         info = KFileItemDelegate::FriendlyMimeType; break;
 587     default: break;
 588     }
 589
 590     return info;
 591 }
 592
 593 void DolphinDetailsView::resizeColumns()
 594 {
 595     // Using the resize mode QHeaderView::ResizeToContents is too slow (it takes
 596     // around 3 seconds for each (!) resize operation when having > 10000 items).
 597     // This gets a problem especially when opening large directories, where several
 598     // resize operations are received for showing the currently available items during
 599     // loading (the application hangs around 20 seconds when loading > 10000 items).
 600
 601     QHeaderView* headerView = header();
 602     QFontMetrics fontMetrics(viewport()->font());
 603
 604     int columnWidth[KDirModel::ColumnCount];
 605     columnWidth[KDirModel::Size] = fontMetrics.width("00000 Items");
 606     columnWidth[KDirModel::ModifiedTime] = fontMetrics.width("0000-00-00 00:00");
 607     columnWidth[KDirModel::Permissions] = fontMetrics.width("xxxxxxxxxx");
 608     columnWidth[KDirModel::Owner] = fontMetrics.width("xxxxxxxxxx");
 609     columnWidth[KDirModel::Group] = fontMetrics.width("xxxxxxxxxx");
 610     columnWidth[KDirModel::Type] = fontMetrics.width("XXXX Xxxxxxx");
 611
 612     int requiredWidth = 0;
 613     for (int i = KDirModel::Size; i <= KDirModel::Type; ++i) {
 614         if (!isColumnHidden(i)) {
 615             columnWidth[i] += 20; // provide a default gap
 616             requiredWidth += columnWidth[i];
 617             headerView->resizeSection(i, columnWidth[i]);
 618         }
 619     }
 620
 621     // resize the name column in a way that the whole available width is used
 622     columnWidth[KDirModel::Name] = viewport()->width() - requiredWidth;
 623     if (columnWidth[KDirModel::Name] < 120) {
 624         columnWidth[KDirModel::Name] = 120;
 625     }
 626     headerView->resizeSection(KDirModel::Name, columnWidth[KDirModel::Name]);
 627 }
 628
 629 #include "dolphindetailsview.moc"