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_expandingTogglePressed(false),
  50     m_keyPressed(false),
  51     m_controller(controller),
  52     m_selectionManager(0),
  53     m_font(),
  54     m_decorationSize(),
  55     m_showElasticBand(false),
  56     m_elasticBandOrigin(),
  57     m_elasticBandDestination()
  58 {
  59     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
  60     Q_ASSERT(settings != 0);
  61     Q_ASSERT(controller != 0);
  62
  63     setAcceptDrops(true);
  64     setSortingEnabled(true);
  65     setUniformRowHeights(true);
  66     setSelectionBehavior(SelectItems);
  67     setDragDropMode(QAbstractItemView::DragDrop);
  68     setDropIndicatorShown(false);
  69     setAlternatingRowColors(true);
  70     setRootIsDecorated(settings->expandableFolders());
  71     setItemsExpandable(settings->expandableFolders());
  72     setEditTriggers(QAbstractItemView::NoEditTriggers);
  73
  74     setMouseTracking(true);
  75
  76     const ViewProperties props(controller->url());
  77     setSortIndicatorSection(props.sorting());
  78     setSortIndicatorOrder(props.sortOrder());
  79
  80     QHeaderView* headerView = header();
  81     connect(headerView, SIGNAL(sectionClicked(int)),
  82             this, SLOT(synchronizeSortingState(int)));
  83     headerView->setContextMenuPolicy(Qt::CustomContextMenu);
  84     connect(headerView, SIGNAL(customContextMenuRequested(const QPoint&)),
  85             this, SLOT(configureColumns(const QPoint&)));
  86     connect(headerView, SIGNAL(sectionResized(int, int, int)),
  87             this, SLOT(slotHeaderSectionResized(int, int, int)));
  88     connect(headerView, SIGNAL(sectionHandleDoubleClicked(int)),
  89             this, SLOT(disableAutoResizing()));
  90
  91     connect(parent, SIGNAL(sortingChanged(DolphinView::Sorting)),
  92             this, SLOT(setSortIndicatorSection(DolphinView::Sorting)));
  93     connect(parent, SIGNAL(sortOrderChanged(Qt::SortOrder)),
  94             this, SLOT(setSortIndicatorOrder(Qt::SortOrder)));
  95
  96     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
  97     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
  98     // necessary connecting the signal 'singleClick()' or 'doubleClick' and to handle the
  99     // RETURN-key in keyPressEvent().
 100     if (KGlobalSettings::singleClick()) {
 101         connect(this, SIGNAL(clicked(const QModelIndex&)),
 102                 controller, SLOT(triggerItem(const QModelIndex&)));
 103     } else {
 104         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 105                 controller, SLOT(triggerItem(const QModelIndex&)));
 106     }
 107
 108     if (DolphinSettings::instance().generalSettings()->showSelectionToggle()) {
 109         m_selectionManager = new SelectionManager(this);
 110         connect(m_selectionManager, SIGNAL(selectionChanged()),
 111                 this, SLOT(requestActivation()));
 112         connect(m_controller, SIGNAL(urlChanged(const KUrl&)),
 113                 m_selectionManager, SLOT(reset()));
 114     }
 115
 116     connect(this, SIGNAL(entered(const QModelIndex&)),
 117             this, SLOT(slotEntered(const QModelIndex&)));
 118     connect(this, SIGNAL(viewportEntered()),
 119             controller, SLOT(emitViewportEntered()));
 120     connect(controller, SIGNAL(zoomLevelChanged(int)),
 121             this, SLOT(setZoomLevel(int)));
 122     connect(controller->dolphinView(), SIGNAL(additionalInfoChanged()),
 123             this, SLOT(updateColumnVisibility()));
 124     connect(controller, SIGNAL(activationChanged(bool)),
 125             this, SLOT(slotActivationChanged(bool)));
 126
 127     if (settings->useSystemFont()) {
 128         m_font = KGlobalSettings::generalFont();
 129     } else {
 130         m_font = QFont(settings->fontFamily(),
 131                        settings->fontSize(),
 132                        settings->fontWeight(),
 133                        settings->italicFont());
 134     }
 135
 136     setVerticalScrollMode(QTreeView::ScrollPerPixel);
 137     setHorizontalScrollMode(QTreeView::ScrollPerPixel);
 138
 139     updateDecorationSize();
 140
 141     setFocus();
 142     viewport()->installEventFilter(this);
 143
 144     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 145             this, SLOT(updateFont()));
 146 }
 147
 148 DolphinDetailsView::~DolphinDetailsView()
 149 {
 150 }
 151
 152 bool DolphinDetailsView::event(QEvent* event)
 153 {
 154     if (event->type() == QEvent::Polish) {
 155         QHeaderView* headerView = header();
 156         headerView->setResizeMode(QHeaderView::Interactive);
 157         headerView->setMovable(false);
 158
 159         updateColumnVisibility();
 160
 161         hideColumn(DolphinModel::Rating);
 162         hideColumn(DolphinModel::Tags);
 163     } else if (event->type() == QEvent::UpdateRequest) {
 164         // a wheel movement will scroll 4 items
 165         if (model()->rowCount() > 0) {
 166             verticalScrollBar()->setSingleStep((sizeHintForRow(0) / 3) * 4);
 167         }
 168     }
 169
 170     return QTreeView::event(event);
 171 }
 172
 173 QStyleOptionViewItem DolphinDetailsView::viewOptions() const
 174 {
 175     QStyleOptionViewItem viewOptions = QTreeView::viewOptions();
 176     viewOptions.font = m_font;
 177     viewOptions.showDecorationSelected = true;
 178     viewOptions.decorationSize = m_decorationSize;
 179     return viewOptions;
 180 }
 181
 182 void DolphinDetailsView::contextMenuEvent(QContextMenuEvent* event)
 183 {
 184     QTreeView::contextMenuEvent(event);
 185     m_controller->triggerContextMenuRequest(event->pos());
 186 }
 187
 188 void DolphinDetailsView::mousePressEvent(QMouseEvent* event)
 189 {
 190     m_controller->requestActivation();
 191
 192     const QModelIndex current = currentIndex();
 193     QTreeView::mousePressEvent(event);
 194
 195     m_expandingTogglePressed = false;
 196     const QModelIndex index = indexAt(event->pos());
 197     const bool updateState = index.isValid() &&
 198                              (index.column() == DolphinModel::Name) &&
 199                              (event->button() == Qt::LeftButton);
 200     if (updateState) {
 201         // TODO: See comment in DolphinIconsView::mousePressEvent(). Only update
 202         // the state if no expanding/collapsing area has been hit:
 203         const QRect rect = visualRect(index);
 204         if (event->pos().x() >= rect.x() + indentation()) {
 205             setState(QAbstractItemView::DraggingState);
 206         } else {
 207             m_expandingTogglePressed = true;
 208         }
 209     }
 210
 211     if (!index.isValid() || (index.column() != DolphinModel::Name)) {
 212         if (QApplication::mouseButtons() & Qt::MidButton) {
 213             m_controller->replaceUrlByClipboard();
 214         }
 215
 216         const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 217         if (!(modifier & Qt::ShiftModifier) && !(modifier & Qt::ControlModifier)) {
 218             clearSelection();
 219         }
 220
 221         // restore the current index, other columns are handled as viewport area
 222         selectionModel()->setCurrentIndex(current, QItemSelectionModel::Current);
 223     }
 224
 225     if ((event->button() == Qt::LeftButton) && !m_expandingTogglePressed) {
 226         m_showElasticBand = true;
 227
 228         const QPoint pos(contentsPos());
 229         m_elasticBandOrigin = event->pos();
 230         m_elasticBandOrigin.setX(m_elasticBandOrigin.x() + pos.x());
 231         m_elasticBandOrigin.setY(m_elasticBandOrigin.y() + pos.y());
 232         m_elasticBandDestination = event->pos();
 233     }
 234 }
 235
 236 void DolphinDetailsView::mouseMoveEvent(QMouseEvent* event)
 237 {
 238     if (m_showElasticBand) {
 239         const QPoint mousePos = event->pos();
 240         const QModelIndex index = indexAt(mousePos);
 241         if (!index.isValid()) {
 242             // the destination of the selection rectangle is above the viewport. In this
 243             // case QTreeView does no selection at all, which is not the wanted behavior
 244             // in Dolphin -> select all items within the elastic band rectangle
 245             clearSelection();
 246
 247             const int nameColumnWidth = header()->sectionSize(DolphinModel::Name);
 248             QRect selRect = QRect(m_elasticBandOrigin, m_elasticBandDestination).normalized();
 249             const QRect nameColumnsRect(0, 0, nameColumnWidth, viewport()->height());
 250             selRect = nameColumnsRect.intersected(selRect);
 251
 252             setSelection(selRect, QItemSelectionModel::Select);
 253         }
 254
 255         // TODO: enable QTreeView::mouseMoveEvent(event) again, as soon
 256         // as the Qt-issue #199631 has been fixed.
 257         // QTreeView::mouseMoveEvent(event);
 258         QAbstractItemView::mouseMoveEvent(event);
 259         updateElasticBand();
 260     } else {
 261         // TODO: enable QTreeView::mouseMoveEvent(event) again, as soon
 262         // as the Qt-issue #199631 has been fixed.
 263         // QTreeView::mouseMoveEvent(event);
 264         QAbstractItemView::mouseMoveEvent(event);
 265     }
 266
 267     if (m_expandingTogglePressed) {
 268         // Per default QTreeView starts either a selection or a drag operation when dragging
 269         // the expanding toggle button (Qt-issue - see TODO comment in DolphinIconsView::mousePressEvent()).
 270         // Turn off this behavior in Dolphin to stay predictable:
 271         clearSelection();
 272         setState(QAbstractItemView::NoState);
 273     }
 274 }
 275
 276 void DolphinDetailsView::mouseReleaseEvent(QMouseEvent* event)
 277 {
 278     const QModelIndex index = indexAt(event->pos());
 279     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 280         QTreeView::mouseReleaseEvent(event);
 281     } else {
 282         // don't change the current index if the cursor is released
 283         // above any other column than the name column, as the other
 284         // columns act as viewport
 285         const QModelIndex current = currentIndex();
 286         QTreeView::mouseReleaseEvent(event);
 287         selectionModel()->setCurrentIndex(current, QItemSelectionModel::Current);
 288     }
 289
 290     m_expandingTogglePressed = false;
 291     if (m_showElasticBand) {
 292         updateElasticBand();
 293         m_showElasticBand = false;
 294     }
 295 }
 296
 297 void DolphinDetailsView::startDrag(Qt::DropActions supportedActions)
 298 {
 299     DragAndDropHelper::startDrag(this, supportedActions);
 300     m_showElasticBand = false;
 301 }
 302
 303 void DolphinDetailsView::dragEnterEvent(QDragEnterEvent* event)
 304 {
 305     if (event->mimeData()->hasUrls()) {
 306         event->acceptProposedAction();
 307     }
 308
 309     if (m_showElasticBand) {
 310         updateElasticBand();
 311         m_showElasticBand = false;
 312     }
 313 }
 314
 315 void DolphinDetailsView::dragLeaveEvent(QDragLeaveEvent* event)
 316 {
 317     QTreeView::dragLeaveEvent(event);
 318     setDirtyRegion(m_dropRect);
 319 }
 320
 321 void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* event)
 322 {
 323     QTreeView::dragMoveEvent(event);
 324
 325     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 326     setDirtyRegion(m_dropRect);
 327     const QModelIndex index = indexAt(event->pos());
 328     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 329         const KFileItem item = m_controller->itemForIndex(index);
 330         if (!item.isNull() && item.isDir()) {
 331             m_dropRect = visualRect(index);
 332         } else {
 333             m_dropRect.setSize(QSize()); // set as invalid
 334         }
 335         setDirtyRegion(m_dropRect);
 336     }
 337
 338     if (event->mimeData()->hasUrls()) {
 339         // accept url drops, independently from the destination item
 340         event->acceptProposedAction();
 341     }
 342 }
 343
 344 void DolphinDetailsView::dropEvent(QDropEvent* event)
 345 {
 346     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 347     if (!urls.isEmpty()) {
 348         event->acceptProposedAction();
 349         const QModelIndex index = indexAt(event->pos());
 350         KFileItem item;
 351         if (index.isValid() && (index.column() == DolphinModel::Name)) {
 352             item = m_controller->itemForIndex(index);
 353         }
 354         m_controller->indicateDroppedUrls(urls,
 355                                           m_controller->url(),
 356                                           item);
 357     }
 358     QTreeView::dropEvent(event);
 359 }
 360
 361 void DolphinDetailsView::paintEvent(QPaintEvent* event)
 362 {
 363     QTreeView::paintEvent(event);
 364     if (m_showElasticBand) {
 365         // The following code has been taken from QListView
 366         // and adapted to DolphinDetailsView.
 367         // (C) 1992-2007 Trolltech ASA
 368         QStyleOptionRubberBand opt;
 369         opt.initFrom(this);
 370         opt.shape = QRubberBand::Rectangle;
 371         opt.opaque = false;
 372         opt.rect = elasticBandRect();
 373
 374         QPainter painter(viewport());
 375         painter.save();
 376         style()->drawControl(QStyle::CE_RubberBand, &opt, &painter);
 377         painter.restore();
 378     }
 379 }
 380
 381 void DolphinDetailsView::keyPressEvent(QKeyEvent* event)
 382 {
 383     // If the Control modifier is pressed, a multiple selection
 384     // is done and DolphinDetailsView::currentChanged() may not
 385     // not change the selection in a custom way.
 386     m_keyPressed = !(event->modifiers() & Qt::ControlModifier);
 387
 388     QTreeView::keyPressEvent(event);
 389     m_controller->handleKeyPressEvent(event);
 390 }
 391
 392 void DolphinDetailsView::keyReleaseEvent(QKeyEvent* event)
 393 {
 394     QTreeView::keyReleaseEvent(event);
 395     m_keyPressed = false;
 396 }
 397
 398 void DolphinDetailsView::resizeEvent(QResizeEvent* event)
 399 {
 400     if (m_autoResize) {
 401         resizeColumns();
 402     }
 403     QTreeView::resizeEvent(event);
 404 }
 405
 406 void DolphinDetailsView::wheelEvent(QWheelEvent* event)
 407 {
 408     if (m_selectionManager != 0) {
 409         m_selectionManager->reset();
 410     }
 411
 412     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 413     if (event->modifiers() & Qt::ControlModifier) {
 414         event->ignore();
 415         return;
 416     }
 417
 418     QTreeView::wheelEvent(event);
 419 }
 420
 421 void DolphinDetailsView::currentChanged(const QModelIndex& current, const QModelIndex& previous)
 422 {
 423     QTreeView::currentChanged(current, previous);
 424
 425     // Stay consistent with QListView: When changing the current index by key presses,
 426     // also change the selection.
 427     if (m_keyPressed) {
 428         selectionModel()->select(current, QItemSelectionModel::ClearAndSelect);
 429     }
 430 }
 431
 432 bool DolphinDetailsView::eventFilter(QObject* watched, QEvent* event)
 433 {
 434     if ((watched == viewport()) && (event->type() == QEvent::Leave)) {
 435         // if the mouse is above an item and moved very fast outside the widget,
 436         // no viewportEntered() signal might be emitted although the mouse has been moved
 437         // above the viewport
 438         m_controller->emitViewportEntered();
 439     }
 440
 441     return QTreeView::eventFilter(watched, event);
 442 }
 443
 444 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
 445 {
 446     QHeaderView* headerView = header();
 447     headerView->setSortIndicator(sorting, headerView->sortIndicatorOrder());
 448 }
 449
 450 void DolphinDetailsView::setSortIndicatorOrder(Qt::SortOrder sortOrder)
 451 {
 452     QHeaderView* headerView = header();
 453     headerView->setSortIndicator(headerView->sortIndicatorSection(), sortOrder);
 454 }
 455
 456 void DolphinDetailsView::synchronizeSortingState(int column)
 457 {
 458     // The sorting has already been changed in QTreeView if this slot is
 459     // invoked, but Dolphin is not informed about this.
 460     DolphinView::Sorting sorting = DolphinSortFilterProxyModel::sortingForColumn(column);
 461     const Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
 462     m_controller->indicateSortingChange(sorting);
 463     m_controller->indicateSortOrderChange(sortOrder);
 464 }
 465
 466 void DolphinDetailsView::slotEntered(const QModelIndex& index)
 467 {
 468     if (index.column() == DolphinModel::Name) {
 469         m_controller->emitItemEntered(index);
 470     } else {
 471         m_controller->emitViewportEntered();
 472     }
 473 }
 474
 475 void DolphinDetailsView::updateElasticBand()
 476 {
 477     if (m_showElasticBand) {
 478         QRect dirtyRegion(elasticBandRect());
 479         m_elasticBandDestination = viewport()->mapFromGlobal(QCursor::pos());
 480         dirtyRegion = dirtyRegion.united(elasticBandRect());
 481         setDirtyRegion(dirtyRegion);
 482     }
 483 }
 484
 485 QRect DolphinDetailsView::elasticBandRect() const
 486 {
 487     const QPoint pos(contentsPos());
 488     const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
 489     return QRect(topLeft, m_elasticBandDestination).normalized();
 490 }
 491
 492 void DolphinDetailsView::setZoomLevel(int level)
 493 {
 494     const int size = DolphinController::iconSizeForZoomLevel(level);
 495     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 496     settings->setIconSize(size);
 497
 498     updateDecorationSize();
 499 }
 500
 501 void DolphinDetailsView::configureColumns(const QPoint& pos)
 502 {
 503     KMenu popup(this);
 504     popup.addTitle(i18nc("@title:menu", "Columns"));
 505
 506     QHeaderView* headerView = header();
 507     for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
 508         const int logicalIndex = headerView->logicalIndex(i);
 509         const QString text = model()->headerData(i, Qt::Horizontal).toString();
 510         QAction* action = popup.addAction(text);
 511         action->setCheckable(true);
 512         action->setChecked(!headerView->isSectionHidden(logicalIndex));
 513         action->setData(i);
 514     }
 515
 516     QAction* activatedAction = popup.exec(header()->mapToGlobal(pos));
 517     if (activatedAction != 0) {
 518         const bool show = activatedAction->isChecked();
 519         const int columnIndex = activatedAction->data().toInt();
 520
 521         KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
 522         const KFileItemDelegate::Information info = infoForColumn(columnIndex);
 523         if (show) {
 524             Q_ASSERT(!list.contains(info));
 525             list.append(info);
 526         } else {
 527             Q_ASSERT(list.contains(info));
 528             const int index = list.indexOf(info);
 529             list.removeAt(index);
 530         }
 531
 532         m_controller->indicateAdditionalInfoChange(list);
 533         setColumnHidden(columnIndex, !show);
 534     }
 535 }
 536
 537 void DolphinDetailsView::updateColumnVisibility()
 538 {
 539     const KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
 540     for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
 541         const KFileItemDelegate::Information info = infoForColumn(i);
 542         const bool hide = !list.contains(info);
 543         if (isColumnHidden(i) != hide) {
 544             setColumnHidden(i, hide);
 545         }
 546     }
 547
 548     resizeColumns();
 549 }
 550
 551 void DolphinDetailsView::slotHeaderSectionResized(int logicalIndex, int oldSize, int newSize)
 552 {
 553     Q_UNUSED(logicalIndex);
 554     Q_UNUSED(oldSize);
 555     Q_UNUSED(newSize);
 556     if (QApplication::mouseButtons() & Qt::LeftButton) {
 557         disableAutoResizing();
 558     }
 559 }
 560
 561 void DolphinDetailsView::slotActivationChanged(bool active)
 562 {
 563     setAlternatingRowColors(active);
 564 }
 565
 566 void DolphinDetailsView::disableAutoResizing()
 567 {
 568     m_autoResize = false;
 569 }
 570
 571 void DolphinDetailsView::requestActivation()
 572 {
 573     m_controller->requestActivation();
 574 }
 575
 576 void DolphinDetailsView::updateFont()
 577 {
 578     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 579     Q_ASSERT(settings != 0);
 580
 581     if (settings->useSystemFont()) {
 582         m_font = KGlobalSettings::generalFont();
 583     }
 584 }
 585
 586 void DolphinDetailsView::updateDecorationSize()
 587 {
 588     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 589     const int iconSize = settings->iconSize();
 590     setIconSize(QSize(iconSize, iconSize));
 591     m_decorationSize = QSize(iconSize, iconSize);
 592
 593     if (m_selectionManager != 0) {
 594         m_selectionManager->reset();
 595     }
 596
 597     doItemsLayout();
 598 }
 599
 600 QPoint DolphinDetailsView::contentsPos() const
 601 {
 602     // implementation note: the horizonal position is ignored currently, as no
 603     // horizontal scrolling is done anyway during a selection
 604     const QScrollBar* scrollbar = verticalScrollBar();
 605     Q_ASSERT(scrollbar != 0);
 606
 607     const int maxHeight = maximumViewportSize().height();
 608     const int height = scrollbar->maximum() - scrollbar->minimum() + 1;
 609     const int visibleHeight = model()->rowCount() + 1 - height;
 610     if (visibleHeight <= 0) {
 611         return QPoint(0, 0);
 612     }
 613
 614     const int y = scrollbar->sliderPosition() * maxHeight / visibleHeight;
 615     return QPoint(0, y);
 616 }
 617
 618 KFileItemDelegate::Information DolphinDetailsView::infoForColumn(int columnIndex) const
 619 {
 620     KFileItemDelegate::Information info = KFileItemDelegate::NoInformation;
 621
 622     switch (columnIndex) {
 623     case DolphinModel::Size:         info = KFileItemDelegate::Size; break;
 624     case DolphinModel::ModifiedTime: info = KFileItemDelegate::ModificationTime; break;
 625     case DolphinModel::Permissions:  info = KFileItemDelegate::Permissions; break;
 626     case DolphinModel::Owner:        info = KFileItemDelegate::Owner; break;
 627     case DolphinModel::Group:        info = KFileItemDelegate::OwnerAndGroup; break;
 628     case DolphinModel::Type:         info = KFileItemDelegate::FriendlyMimeType; break;
 629     default: break;
 630     }
 631
 632     return info;
 633 }
 634
 635 void DolphinDetailsView::resizeColumns()
 636 {
 637     // Using the resize mode QHeaderView::ResizeToContents is too slow (it takes
 638     // around 3 seconds for each (!) resize operation when having > 10000 items).
 639     // This gets a problem especially when opening large directories, where several
 640     // resize operations are received for showing the currently available items during
 641     // loading (the application hangs around 20 seconds when loading > 10000 items).
 642
 643     QHeaderView* headerView = header();
 644     QFontMetrics fontMetrics(viewport()->font());
 645
 646     int columnWidth[KDirModel::ColumnCount];
 647     columnWidth[KDirModel::Size] = fontMetrics.width("00000 Items");
 648     columnWidth[KDirModel::ModifiedTime] = fontMetrics.width("0000-00-00 00:00");
 649     columnWidth[KDirModel::Permissions] = fontMetrics.width("xxxxxxxxxx");
 650     columnWidth[KDirModel::Owner] = fontMetrics.width("xxxxxxxxxx");
 651     columnWidth[KDirModel::Group] = fontMetrics.width("xxxxxxxxxx");
 652     columnWidth[KDirModel::Type] = fontMetrics.width("XXXX Xxxxxxx");
 653
 654     int requiredWidth = 0;
 655     for (int i = KDirModel::Size; i <= KDirModel::Type; ++i) {
 656         if (!isColumnHidden(i)) {
 657             columnWidth[i] += 20; // provide a default gap
 658             requiredWidth += columnWidth[i];
 659             headerView->resizeSection(i, columnWidth[i]);
 660         }
 661     }
 662
 663     // resize the name column in a way that the whole available width is used
 664     columnWidth[KDirModel::Name] = viewport()->width() - requiredWidth;
 665     if (columnWidth[KDirModel::Name] < 120) {
 666         columnWidth[KDirModel::Name] = 120;
 667     }
 668     headerView->resizeSection(KDirModel::Name, columnWidth[KDirModel::Name]);
 669 }
 670
 671 #include "dolphindetailsview.moc"