src/dolphindetailsview.cpp

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