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 "viewproperties.h"
  29
  30 #include "dolphin_detailsmodesettings.h"
  31
  32 #include <kdirmodel.h>
  33 #include <klocale.h>
  34 #include <kmenu.h>
  35
  36 #include <QAbstractProxyModel>
  37 #include <QAction>
  38 #include <QApplication>
  39 #include <QHeaderView>
  40 #include <QRubberBand>
  41 #include <QPainter>
  42 #include <QScrollBar>
  43
  44 DolphinDetailsView::DolphinDetailsView(QWidget* parent, DolphinController* controller) :
  45     QTreeView(parent),
  46     m_controller(controller),
  47     m_font(),
  48     m_decorationSize(),
  49     m_clearAdditionalInfo(false),
  50     m_dragging(false),
  51     m_showElasticBand(false),
  52     m_elasticBandOrigin(),
  53     m_elasticBandDestination()
  54 {
  55     Q_ASSERT(controller != 0);
  56
  57     setAcceptDrops(true);
  58     setRootIsDecorated(false);
  59     setSortingEnabled(true);
  60     setUniformRowHeights(true);
  61     setSelectionBehavior(SelectItems);
  62     setDragDropMode(QAbstractItemView::DragDrop);
  63     setDropIndicatorShown(false);
  64     setAlternatingRowColors(true);
  65     setItemsExpandable(false);
  66
  67     setMouseTracking(true);
  68     viewport()->setAttribute(Qt::WA_Hover);
  69
  70     const ViewProperties props(controller->url());
  71     setSortIndicatorSection(props.sorting());
  72     setSortIndicatorOrder(props.sortOrder());
  73
  74     QHeaderView* headerView = header();
  75     connect(headerView, SIGNAL(sectionClicked(int)),
  76             this, SLOT(synchronizeSortingState(int)));
  77     headerView->setContextMenuPolicy(Qt::CustomContextMenu);
  78     connect(headerView, SIGNAL(customContextMenuRequested(const QPoint&)),
  79             this, SLOT(configureColumns(const QPoint&)));
  80
  81     connect(parent, SIGNAL(sortingChanged(DolphinView::Sorting)),
  82             this, SLOT(setSortIndicatorSection(DolphinView::Sorting)));
  83     connect(parent, SIGNAL(sortOrderChanged(Qt::SortOrder)),
  84             this, SLOT(setSortIndicatorOrder(Qt::SortOrder)));
  85
  86     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
  87     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
  88     // necessary connecting the signal 'singleClick()' or 'doubleClick' and to handle the
  89     // RETURN-key in keyPressEvent().
  90     if (KGlobalSettings::singleClick()) {
  91         connect(this, SIGNAL(clicked(const QModelIndex&)),
  92                 this, SLOT(triggerItem(const QModelIndex&)));
  93     } else {
  94         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
  95                 this, SLOT(triggerItem(const QModelIndex&)));
  96     }
  97     connect(this, SIGNAL(entered(const QModelIndex&)),
  98             this, SLOT(slotEntered(const QModelIndex&)));
  99     connect(this, SIGNAL(viewportEntered()),
 100             controller, SLOT(emitViewportEntered()));
 101     connect(controller, SIGNAL(zoomIn()),
 102             this, SLOT(zoomIn()));
 103     connect(controller, SIGNAL(zoomOut()),
 104             this, SLOT(zoomOut()));
 105     connect(controller->dolphinView(), SIGNAL(additionalInfoChanged(const KFileItemDelegate::InformationList&)),
 106             this, SLOT(updateColumnVisibility()));
 107
 108     // apply the details mode settings to the widget
 109     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 110     Q_ASSERT(settings != 0);
 111
 112     m_font = QFont(settings->fontFamily(), settings->fontSize());
 113
 114 // TODO: Remove this check when 4.3.2 is released and KDE requires it... this
 115 //       check avoids a division by zero happening on versions before 4.3.1.
 116 //       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
 117 //       ereslibre
 118 #if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
 119     setVerticalScrollMode(QTreeView::ScrollPerPixel);
 120     setHorizontalScrollMode(QTreeView::ScrollPerPixel);
 121 #endif
 122
 123     updateDecorationSize();
 124
 125     setFocus();
 126 }
 127
 128 DolphinDetailsView::~DolphinDetailsView()
 129 {
 130 }
 131
 132 bool DolphinDetailsView::event(QEvent* event)
 133 {
 134     if (event->type() == QEvent::Polish) {
 135         QHeaderView* headerView = header();
 136         headerView->setResizeMode(QHeaderView::Interactive);
 137         headerView->setMovable(false);
 138
 139         updateColumnVisibility();
 140
 141         hideColumn(DolphinModel::Rating);
 142         hideColumn(DolphinModel::Tags);
 143     }
 144 // TODO: Remove this check when 4.3.2 is released and KDE requires it... this
 145 //       check avoids a division by zero happening on versions before 4.3.1.
 146 //       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
 147 //       ereslibre
 148 #if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
 149     else if (event->type() == QEvent::UpdateRequest) {
 150         // a wheel movement will scroll 4 items
 151         if (model()->rowCount() > 0) {
 152             verticalScrollBar()->setSingleStep((sizeHintForRow(0) / 3) * 4);
 153         }
 154     }
 155 #endif
 156
 157     return QTreeView::event(event);
 158 }
 159
 160 QStyleOptionViewItem DolphinDetailsView::viewOptions() const
 161 {
 162     QStyleOptionViewItem viewOptions = QTreeView::viewOptions();
 163     viewOptions.font = m_font;
 164     viewOptions.showDecorationSelected = true;
 165     viewOptions.decorationSize = m_decorationSize;
 166     return viewOptions;
 167 }
 168
 169 void DolphinDetailsView::contextMenuEvent(QContextMenuEvent* event)
 170 {
 171     QTreeView::contextMenuEvent(event);
 172     m_controller->triggerContextMenuRequest(event->pos());
 173 }
 174
 175 void DolphinDetailsView::mousePressEvent(QMouseEvent* event)
 176 {
 177     m_controller->requestActivation();
 178
 179     QTreeView::mousePressEvent(event);
 180
 181     const QModelIndex index = indexAt(event->pos());
 182     if (!index.isValid() || (index.column() != DolphinModel::Name)) {
 183         const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 184         if (!(modifier & Qt::ShiftModifier) && !(modifier & Qt::ControlModifier)) {
 185             clearSelection();
 186         }
 187     }
 188
 189     if (event->button() == Qt::LeftButton) {
 190         m_showElasticBand = true;
 191
 192         const QPoint pos(contentsPos());
 193         m_elasticBandOrigin = event->pos();
 194         m_elasticBandOrigin.setX(m_elasticBandOrigin.x() + pos.x());
 195         m_elasticBandOrigin.setY(m_elasticBandOrigin.y() + pos.y());
 196         m_elasticBandDestination = event->pos();
 197     }
 198 }
 199
 200 void DolphinDetailsView::mouseMoveEvent(QMouseEvent* event)
 201 {
 202     QTreeView::mouseMoveEvent(event);
 203     if (m_showElasticBand) {
 204         updateElasticBand();
 205     }
 206 }
 207
 208 void DolphinDetailsView::mouseReleaseEvent(QMouseEvent* event)
 209 {
 210     QTreeView::mouseReleaseEvent(event);
 211     if (m_showElasticBand) {
 212         updateElasticBand();
 213         m_showElasticBand = false;
 214     }
 215 }
 216
 217 void DolphinDetailsView::startDrag(Qt::DropActions supportedActions)
 218 {
 219     DragAndDropHelper::startDrag(this, supportedActions);
 220 }
 221
 222 void DolphinDetailsView::dragEnterEvent(QDragEnterEvent* event)
 223 {
 224     if (event->mimeData()->hasUrls()) {
 225         event->acceptProposedAction();
 226     }
 227
 228     if (m_showElasticBand) {
 229         updateElasticBand();
 230         m_showElasticBand = false;
 231     }
 232     m_dragging = true;
 233 }
 234
 235 void DolphinDetailsView::dragLeaveEvent(QDragLeaveEvent* event)
 236 {
 237     QTreeView::dragLeaveEvent(event);
 238
 239     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 240     m_dragging = false;
 241     setDirtyRegion(m_dropRect);
 242 }
 243
 244 void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* event)
 245 {
 246     QTreeView::dragMoveEvent(event);
 247
 248     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 249     setDirtyRegion(m_dropRect);
 250     const QModelIndex index = indexAt(event->pos());
 251     if (!index.isValid() || (index.column() != DolphinModel::Name)) {
 252         m_dragging = false;
 253     } else {
 254         m_dragging = true;
 255         const KFileItem item = itemForIndex(index);
 256         if (!item.isNull() && item.isDir()) {
 257             m_dropRect = visualRect(index);
 258         } else {
 259             m_dropRect.setSize(QSize()); // set as invalid
 260         }
 261         setDirtyRegion(m_dropRect);
 262     }
 263 }
 264
 265 void DolphinDetailsView::dropEvent(QDropEvent* event)
 266 {
 267     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 268     if (!urls.isEmpty()) {
 269         event->acceptProposedAction();
 270         const QModelIndex index = indexAt(event->pos());
 271         KFileItem item;
 272         if (index.isValid() && (index.column() == DolphinModel::Name)) {
 273             item = itemForIndex(index);
 274         }
 275         m_controller->indicateDroppedUrls(urls,
 276                                           m_controller->url(),
 277                                           item);
 278     }
 279     QTreeView::dropEvent(event);
 280     m_dragging = false;
 281 }
 282
 283 void DolphinDetailsView::paintEvent(QPaintEvent* event)
 284 {
 285     QTreeView::paintEvent(event);
 286     if (m_showElasticBand) {
 287         // The following code has been taken from QListView
 288         // and adapted to DolphinDetailsView.
 289         // (C) 1992-2007 Trolltech ASA
 290         QStyleOptionRubberBand opt;
 291         opt.initFrom(this);
 292         opt.shape = QRubberBand::Rectangle;
 293         opt.opaque = false;
 294         opt.rect = elasticBandRect();
 295
 296         QPainter painter(viewport());
 297         painter.save();
 298         style()->drawControl(QStyle::CE_RubberBand, &opt, &painter);
 299         painter.restore();
 300     }
 301
 302     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 303     if (m_dragging) {
 304         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 305         DragAndDropHelper::drawHoverIndication(viewport(), m_dropRect, brush);
 306     }
 307 }
 308
 309 void DolphinDetailsView::keyPressEvent(QKeyEvent* event)
 310 {
 311     QTreeView::keyPressEvent(event);
 312
 313     const QItemSelectionModel* selModel = selectionModel();
 314     const QModelIndex currentIndex = selModel->currentIndex();
 315     const bool trigger = currentIndex.isValid()
 316                          && (event->key() == Qt::Key_Return)
 317                          && (selModel->selectedIndexes().count() <= 1);
 318     if (trigger) {
 319         triggerItem(currentIndex);
 320     }
 321 }
 322
 323 void DolphinDetailsView::resizeEvent(QResizeEvent* event)
 324 {
 325     QTreeView::resizeEvent(event);
 326
 327     // TODO: There seems to be no easy way to find out whether the resize event
 328     // has been triggered because of resizing the window or by adjusting the column-width
 329     // by a left mouse-click (the columns should only be resized automatically when the window
 330     // size is adjusted). The following workaround works well, but it should be
 331     // considered solving this in a more transparent way.
 332     if (!(QApplication::mouseButtons() & Qt::LeftButton)) {
 333         resizeColumns();
 334     }
 335 }
 336
 337 void DolphinDetailsView::closeEvent(QCloseEvent* event)
 338 {
 339     if (m_clearAdditionalInfo) {
 340         disconnect(m_controller->dolphinView(), SIGNAL(additionalInfoChanged(const KFileItemDelegate::InformationList&)),
 341                 this, SLOT(updateColumnVisibility()));
 342
 343         KFileItemDelegate::InformationList info;
 344         info.append(KFileItemDelegate::NoInformation);
 345         m_controller->indicateAdditionalInfoChange(info);
 346         m_clearAdditionalInfo = false;
 347     }
 348     QTreeView::closeEvent(event);
 349 }
 350
 351 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
 352 {
 353     QHeaderView* headerView = header();
 354     headerView->setSortIndicator(sorting, headerView->sortIndicatorOrder());
 355 }
 356
 357 void DolphinDetailsView::setSortIndicatorOrder(Qt::SortOrder sortOrder)
 358 {
 359     QHeaderView* headerView = header();
 360     headerView->setSortIndicator(headerView->sortIndicatorSection(), sortOrder);
 361 }
 362
 363 void DolphinDetailsView::synchronizeSortingState(int column)
 364 {
 365     // The sorting has already been changed in QTreeView if this slot is
 366     // invoked, but Dolphin is not informed about this.
 367     DolphinView::Sorting sorting = DolphinSortFilterProxyModel::sortingForColumn(column);
 368     const Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
 369     m_controller->indicateSortingChange(sorting);
 370     m_controller->indicateSortOrderChange(sortOrder);
 371 }
 372
 373 void DolphinDetailsView::slotEntered(const QModelIndex& index)
 374 {
 375     const QPoint pos = viewport()->mapFromGlobal(QCursor::pos());
 376     const int nameColumnWidth = header()->sectionSize(DolphinModel::Name);
 377     if (pos.x() < nameColumnWidth) {
 378         m_controller->emitItemEntered(itemForIndex(index));
 379     }
 380     else {
 381         m_controller->emitViewportEntered();
 382     }
 383 }
 384
 385 void DolphinDetailsView::updateElasticBand()
 386 {
 387     Q_ASSERT(m_showElasticBand);
 388     QRect dirtyRegion(elasticBandRect());
 389     m_elasticBandDestination = viewport()->mapFromGlobal(QCursor::pos());
 390     dirtyRegion = dirtyRegion.united(elasticBandRect());
 391     setDirtyRegion(dirtyRegion);
 392 }
 393
 394 QRect DolphinDetailsView::elasticBandRect() const
 395 {
 396     const QPoint pos(contentsPos());
 397     const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
 398     return QRect(topLeft, m_elasticBandDestination).normalized();
 399 }
 400
 401 void DolphinDetailsView::zoomIn()
 402 {
 403     if (isZoomInPossible()) {
 404         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 405         switch (settings->iconSize()) {
 406         case KIconLoader::SizeSmall:  settings->setIconSize(KIconLoader::SizeMedium); break;
 407         case KIconLoader::SizeMedium: settings->setIconSize(KIconLoader::SizeLarge); break;
 408         default: Q_ASSERT(false); break;
 409         }
 410         updateDecorationSize();
 411     }
 412 }
 413
 414 void DolphinDetailsView::zoomOut()
 415 {
 416     if (isZoomOutPossible()) {
 417         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 418         switch (settings->iconSize()) {
 419         case KIconLoader::SizeLarge:  settings->setIconSize(KIconLoader::SizeMedium); break;
 420         case KIconLoader::SizeMedium: settings->setIconSize(KIconLoader::SizeSmall); break;
 421         default: Q_ASSERT(false); break;
 422         }
 423         updateDecorationSize();
 424     }
 425 }
 426
 427 void DolphinDetailsView::triggerItem(const QModelIndex& index)
 428 {
 429     const KFileItem item = itemForIndex(index);
 430     if (index.isValid() && (index.column() == KDirModel::Name)) {
 431         m_controller->triggerItem(item);
 432     } else {
 433         clearSelection();
 434         m_controller->emitItemEntered(item);
 435     }
 436 }
 437
 438 void DolphinDetailsView::configureColumns(const QPoint& pos)
 439 {
 440     KMenu popup(this);
 441     popup.addTitle(i18nc("@title:menu", "Columns"));
 442
 443     QHeaderView* headerView = header();
 444     for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
 445         const int logicalIndex = headerView->logicalIndex(i);
 446         const QString text = model()->headerData(i, Qt::Horizontal).toString();
 447         QAction* action = popup.addAction(text);
 448         action->setCheckable(true);
 449         action->setChecked(!headerView->isSectionHidden(logicalIndex));
 450         action->setData(i);
 451     }
 452
 453     QAction* activatedAction = popup.exec(header()->mapToGlobal(pos));
 454     if (activatedAction != 0) {
 455         const bool show = activatedAction->isChecked();
 456         const int columnIndex = activatedAction->data().toInt();
 457
 458         KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
 459         const KFileItemDelegate::Information info = infoForColumn(columnIndex);
 460         if (show) {
 461             Q_ASSERT(!list.contains(info));
 462             list.append(info);
 463         } else {
 464             Q_ASSERT(list.contains(info));
 465             const int index = list.indexOf(info);
 466             list.removeAt(index);
 467         }
 468
 469         m_controller->indicateAdditionalInfoChange(list);
 470         setColumnHidden(columnIndex, !show);
 471     }
 472 }
 473
 474 void DolphinDetailsView::updateColumnVisibility()
 475 {
 476     KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
 477     const bool useDefaultColumns = !isVisible() &&
 478                                    (list.isEmpty() ||
 479                                     list.contains(KFileItemDelegate::NoInformation));
 480     if (useDefaultColumns) {
 481         // Using the details view without any additional information (-> additional column)
 482         // makes no sense and leads to a usability problem as no viewport area is available
 483         // anymore. Hence as fallback provide at least a size and date column.
 484         list.clear();
 485         list.append(KFileItemDelegate::Size);
 486         list.append(KFileItemDelegate::ModificationTime);
 487         m_controller->indicateAdditionalInfoChange(list);
 488         m_clearAdditionalInfo = true;
 489     }
 490
 491     for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
 492         const KFileItemDelegate::Information info = infoForColumn(i);
 493         const bool hide = !list.contains(info);
 494         if (isColumnHidden(i) != hide) {
 495             setColumnHidden(i, hide);
 496             m_clearAdditionalInfo = false;
 497         }
 498     }
 499
 500     resizeColumns();
 501 }
 502
 503 bool DolphinDetailsView::isZoomInPossible() const
 504 {
 505     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 506     return settings->iconSize() < KIconLoader::SizeLarge;
 507 }
 508
 509 bool DolphinDetailsView::isZoomOutPossible() const
 510 {
 511     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 512     return settings->iconSize() > KIconLoader::SizeSmall;
 513 }
 514
 515 void DolphinDetailsView::updateDecorationSize()
 516 {
 517     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 518     const int iconSize = settings->iconSize();
 519     m_decorationSize = QSize(iconSize, iconSize);
 520
 521     m_controller->setZoomInPossible(isZoomInPossible());
 522     m_controller->setZoomOutPossible(isZoomOutPossible());
 523
 524     doItemsLayout();
 525 }
 526
 527 QPoint DolphinDetailsView::contentsPos() const
 528 {
 529     // implementation note: the horizonal position is ignored currently, as no
 530     // horizontal scrolling is done anyway during a selection
 531     const QScrollBar* scrollbar = verticalScrollBar();
 532     Q_ASSERT(scrollbar != 0);
 533
 534     const int maxHeight = maximumViewportSize().height();
 535     const int height = scrollbar->maximum() - scrollbar->minimum() + 1;
 536     const int visibleHeight = model()->rowCount() + 1 - height;
 537     if (visibleHeight <= 0) {
 538         return QPoint(0, 0);
 539     }
 540
 541     const int y = scrollbar->sliderPosition() * maxHeight / visibleHeight;
 542     return QPoint(0, y);
 543 }
 544
 545 KFileItem DolphinDetailsView::itemForIndex(const QModelIndex& index) const
 546 {
 547     QAbstractProxyModel* proxyModel = static_cast<QAbstractProxyModel*>(model());
 548     KDirModel* dirModel = static_cast<KDirModel*>(proxyModel->sourceModel());
 549     const QModelIndex dirIndex = proxyModel->mapToSource(index);
 550     return dirModel->itemForIndex(dirIndex);
 551 }
 552
 553 KFileItemDelegate::Information DolphinDetailsView::infoForColumn(int columnIndex) const
 554 {
 555     KFileItemDelegate::Information info = KFileItemDelegate::NoInformation;
 556
 557     switch (columnIndex) {
 558     case DolphinModel::Size:         info = KFileItemDelegate::Size; break;
 559     case DolphinModel::ModifiedTime: info = KFileItemDelegate::ModificationTime; break;
 560     case DolphinModel::Permissions:  info = KFileItemDelegate::Permissions; break;
 561     case DolphinModel::Owner:        info = KFileItemDelegate::Owner; break;
 562     case DolphinModel::Group:        info = KFileItemDelegate::OwnerAndGroup; break;
 563     case DolphinModel::Type:         info = KFileItemDelegate::FriendlyMimeType; break;
 564     default: break;
 565     }
 566
 567     return info;
 568 }
 569
 570 void DolphinDetailsView::resizeColumns()
 571 {
 572     // Using the resize mode QHeaderView::ResizeToContents is too slow (it takes
 573     // around 3 seconds for each (!) resize operation when having > 10000 items).
 574     // This gets a problem especially when opening large directories, where several
 575     // resize operations are received for showing the currently available items during
 576     // loading (the application hangs around 20 seconds when loading > 10000 items).
 577
 578     QHeaderView* headerView = header();
 579     QFontMetrics fontMetrics(viewport()->font());
 580
 581     int columnWidth[KDirModel::ColumnCount];
 582     columnWidth[KDirModel::Size] = fontMetrics.width("00000 Items");
 583     columnWidth[KDirModel::ModifiedTime] = fontMetrics.width("0000-00-00 00:00");
 584     columnWidth[KDirModel::Permissions] = fontMetrics.width("xxxxxxxxxx");
 585     columnWidth[KDirModel::Owner] = fontMetrics.width("xxxxxxxxxx");
 586     columnWidth[KDirModel::Group] = fontMetrics.width("xxxxxxxxxx");
 587     columnWidth[KDirModel::Type] = fontMetrics.width("XXXX Xxxxxxx");
 588
 589     int requiredWidth = 0;
 590     for (int i = KDirModel::Size; i <= KDirModel::Type; ++i) {
 591         if (!isColumnHidden(i)) {
 592             columnWidth[i] += 20; // provide a default gap
 593             requiredWidth += columnWidth[i];
 594             headerView->resizeSection(i, columnWidth[i]);
 595         }
 596     }
 597
 598     // resize the name column in a way that the whole available width is used
 599     columnWidth[KDirModel::Name] = viewport()->width() - requiredWidth;
 600     if (columnWidth[KDirModel::Name] < 120) {
 601         columnWidth[KDirModel::Name] = 120;
 602     }
 603     headerView->resizeSection(KDirModel::Name, columnWidth[KDirModel::Name]);
 604 }
 605
 606 #include "dolphindetailsview.moc"