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                 this, 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                 this, 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     m_font = QFont(settings->fontFamily(), settings->fontSize());
 124
 125 // TODO: Remove this check when 4.3.2 is released and KDE requires it... this
 126 //       check avoids a division by zero happening on versions before 4.3.1.
 127 //       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
 128 //       ereslibre
 129 #if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
 130     setVerticalScrollMode(QTreeView::ScrollPerPixel);
 131     setHorizontalScrollMode(QTreeView::ScrollPerPixel);
 132 #endif
 133
 134     updateDecorationSize();
 135
 136     setFocus();
 137 }
 138
 139 DolphinDetailsView::~DolphinDetailsView()
 140 {
 141 }
 142
 143 bool DolphinDetailsView::event(QEvent* event)
 144 {
 145     if (event->type() == QEvent::Polish) {
 146         QHeaderView* headerView = header();
 147         headerView->setResizeMode(QHeaderView::Interactive);
 148         headerView->setMovable(false);
 149
 150         updateColumnVisibility();
 151
 152         hideColumn(DolphinModel::Rating);
 153         hideColumn(DolphinModel::Tags);
 154     }
 155 // TODO: Remove this check when 4.3.2 is released and KDE requires it... this
 156 //       check avoids a division by zero happening on versions before 4.3.1.
 157 //       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
 158 //       ereslibre
 159 #if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
 160     else if (event->type() == QEvent::UpdateRequest) {
 161         // a wheel movement will scroll 4 items
 162         if (model()->rowCount() > 0) {
 163             verticalScrollBar()->setSingleStep((sizeHintForRow(0) / 3) * 4);
 164         }
 165     }
 166 #endif
 167
 168     return QTreeView::event(event);
 169 }
 170
 171 QStyleOptionViewItem DolphinDetailsView::viewOptions() const
 172 {
 173     QStyleOptionViewItem viewOptions = QTreeView::viewOptions();
 174     viewOptions.font = m_font;
 175     viewOptions.showDecorationSelected = true;
 176     viewOptions.decorationSize = m_decorationSize;
 177     return viewOptions;
 178 }
 179
 180 void DolphinDetailsView::contextMenuEvent(QContextMenuEvent* event)
 181 {
 182     QTreeView::contextMenuEvent(event);
 183     m_controller->triggerContextMenuRequest(event->pos());
 184 }
 185
 186 void DolphinDetailsView::mousePressEvent(QMouseEvent* event)
 187 {
 188     m_controller->requestActivation();
 189
 190     QTreeView::mousePressEvent(event);
 191
 192     const QModelIndex index = indexAt(event->pos());
 193     if (!index.isValid() || (index.column() != DolphinModel::Name)) {
 194         const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 195         if (!(modifier & Qt::ShiftModifier) && !(modifier & Qt::ControlModifier)) {
 196             clearSelection();
 197         }
 198     }
 199
 200     if (event->button() == Qt::LeftButton) {
 201         m_showElasticBand = true;
 202
 203         const QPoint pos(contentsPos());
 204         m_elasticBandOrigin = event->pos();
 205         m_elasticBandOrigin.setX(m_elasticBandOrigin.x() + pos.x());
 206         m_elasticBandOrigin.setY(m_elasticBandOrigin.y() + pos.y());
 207         m_elasticBandDestination = event->pos();
 208     }
 209 }
 210
 211 void DolphinDetailsView::mouseMoveEvent(QMouseEvent* event)
 212 {
 213     if (m_showElasticBand) {
 214         const QPoint mousePos = event->pos();
 215         const QModelIndex index = indexAt(mousePos);
 216         if (!index.isValid()) {
 217             // the destination of the selection rectangle is above the viewport. In this
 218             // case QTreeView does no selection at all, which is not the wanted behavior
 219             // in Dolphin -> select all items within the elastic band rectangle
 220             clearSelection();
 221
 222             const int nameColumnWidth = header()->sectionSize(DolphinModel::Name);
 223             QRect selRect = QRect(m_elasticBandOrigin, m_elasticBandDestination).normalized();
 224             const QRect nameColumnsRect(0, 0, nameColumnWidth, viewport()->height());
 225             selRect = nameColumnsRect.intersected(selRect);
 226
 227             setSelection(selRect, QItemSelectionModel::Select);
 228         }
 229
 230         // TODO: see comment at end of method
 231         // QTreeView::mouseMoveEvent(event);
 232         QAbstractItemView::mouseMoveEvent(event);
 233         updateElasticBand();
 234     } else {
 235         // TODO: see comment at end of method
 236         //QTreeView::mouseMoveEvent(event);
 237         QAbstractItemView::mouseMoveEvent(event);
 238     }
 239
 240     // The original implementation of QTreeView::mouseMoveEvent() looks like this (Qt4.4):
 241     //
 242     // void QTreeView::mouseMoveEvent(QMouseEvent *event)
 243     // {
 244     //     Q_D(QTreeView);
 245     //     if (d->itemDecorationAt(event->pos()) == -1) // ### what about expanding/collapsing state ?
 246     //         QAbstractItemView::mouseMoveEvent(event);
 247     // }
 248     //
 249     // This prevents that the signal 'entered()' is emitted when the mouse is above a decoration,
 250     // although the hovered item has changed. The SelectionManager is connected to 'entered()'
 251     // and assumes that the old item is selected. This is currently bypassed by skipping
 252     // the base implementation and invoking QAbstractItemView::mouseMoveEvent() directly.
 253     // Submitted a bug report to Trolltech, bug ID is still pending.
 254 }
 255
 256 void DolphinDetailsView::mouseReleaseEvent(QMouseEvent* event)
 257 {
 258     QTreeView::mouseReleaseEvent(event);
 259     if (m_showElasticBand) {
 260         updateElasticBand();
 261         m_showElasticBand = false;
 262     }
 263 }
 264
 265 void DolphinDetailsView::startDrag(Qt::DropActions supportedActions)
 266 {
 267     DragAndDropHelper::startDrag(this, supportedActions);
 268 }
 269
 270 void DolphinDetailsView::dragEnterEvent(QDragEnterEvent* event)
 271 {
 272     if (event->mimeData()->hasUrls()) {
 273         event->acceptProposedAction();
 274     }
 275
 276     if (m_showElasticBand) {
 277         updateElasticBand();
 278         m_showElasticBand = false;
 279     }
 280     m_dragging = true;
 281 }
 282
 283 void DolphinDetailsView::dragLeaveEvent(QDragLeaveEvent* event)
 284 {
 285     QTreeView::dragLeaveEvent(event);
 286
 287     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 288     m_dragging = false;
 289     setDirtyRegion(m_dropRect);
 290 }
 291
 292 void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* event)
 293 {
 294     QTreeView::dragMoveEvent(event);
 295
 296     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 297     setDirtyRegion(m_dropRect);
 298     const QModelIndex index = indexAt(event->pos());
 299     if (!index.isValid() || (index.column() != DolphinModel::Name)) {
 300         m_dragging = false;
 301     } else {
 302         m_dragging = true;
 303         const KFileItem item = itemForIndex(index);
 304         if (!item.isNull() && item.isDir()) {
 305             m_dropRect = visualRect(index);
 306         } else {
 307             m_dropRect.setSize(QSize()); // set as invalid
 308         }
 309         setDirtyRegion(m_dropRect);
 310     }
 311
 312     if (event->mimeData()->hasUrls()) {
 313         // accept url drops, independently from the destination item
 314         event->acceptProposedAction();
 315     }
 316 }
 317
 318 void DolphinDetailsView::dropEvent(QDropEvent* event)
 319 {
 320     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 321     if (!urls.isEmpty()) {
 322         event->acceptProposedAction();
 323         const QModelIndex index = indexAt(event->pos());
 324         KFileItem item;
 325         if (index.isValid() && (index.column() == DolphinModel::Name)) {
 326             item = itemForIndex(index);
 327         }
 328         m_controller->indicateDroppedUrls(urls,
 329                                           m_controller->url(),
 330                                           item);
 331     }
 332     QTreeView::dropEvent(event);
 333     m_dragging = false;
 334 }
 335
 336 void DolphinDetailsView::paintEvent(QPaintEvent* event)
 337 {
 338     QTreeView::paintEvent(event);
 339     if (m_showElasticBand) {
 340         // The following code has been taken from QListView
 341         // and adapted to DolphinDetailsView.
 342         // (C) 1992-2007 Trolltech ASA
 343         QStyleOptionRubberBand opt;
 344         opt.initFrom(this);
 345         opt.shape = QRubberBand::Rectangle;
 346         opt.opaque = false;
 347         opt.rect = elasticBandRect();
 348
 349         QPainter painter(viewport());
 350         painter.save();
 351         style()->drawControl(QStyle::CE_RubberBand, &opt, &painter);
 352         painter.restore();
 353     }
 354
 355     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 356     if (m_dragging) {
 357         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 358         DragAndDropHelper::drawHoverIndication(this, m_dropRect, brush);
 359     }
 360 }
 361
 362 void DolphinDetailsView::keyPressEvent(QKeyEvent* event)
 363 {
 364     QTreeView::keyPressEvent(event);
 365
 366     const QItemSelectionModel* selModel = selectionModel();
 367     const QModelIndex currentIndex = selModel->currentIndex();
 368     const bool trigger = currentIndex.isValid()
 369                          && (event->key() == Qt::Key_Return)
 370                          && (selModel->selectedIndexes().count() <= 1);
 371     if (trigger) {
 372         triggerItem(currentIndex);
 373     }
 374 }
 375
 376 void DolphinDetailsView::resizeEvent(QResizeEvent* event)
 377 {
 378     if (m_autoResize) {
 379         resizeColumns();
 380     }
 381     QTreeView::resizeEvent(event);
 382 }
 383
 384 void DolphinDetailsView::wheelEvent(QWheelEvent* event)
 385 {
 386     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 387     if ((event->modifiers() & Qt::ControlModifier) == Qt::ControlModifier) {
 388         event->ignore();
 389         return;
 390     }
 391     QTreeView::wheelEvent(event);
 392 }
 393
 394 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
 395 {
 396     QHeaderView* headerView = header();
 397     headerView->setSortIndicator(sorting, headerView->sortIndicatorOrder());
 398 }
 399
 400 void DolphinDetailsView::setSortIndicatorOrder(Qt::SortOrder sortOrder)
 401 {
 402     QHeaderView* headerView = header();
 403     headerView->setSortIndicator(headerView->sortIndicatorSection(), sortOrder);
 404 }
 405
 406 void DolphinDetailsView::synchronizeSortingState(int column)
 407 {
 408     // The sorting has already been changed in QTreeView if this slot is
 409     // invoked, but Dolphin is not informed about this.
 410     DolphinView::Sorting sorting = DolphinSortFilterProxyModel::sortingForColumn(column);
 411     const Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
 412     m_controller->indicateSortingChange(sorting);
 413     m_controller->indicateSortOrderChange(sortOrder);
 414 }
 415
 416 void DolphinDetailsView::slotEntered(const QModelIndex& index)
 417 {
 418     const QPoint pos = viewport()->mapFromGlobal(QCursor::pos());
 419     const int nameColumnWidth = header()->sectionSize(DolphinModel::Name);
 420     if (pos.x() < nameColumnWidth) {
 421         m_controller->emitItemEntered(itemForIndex(index));
 422     }
 423     else {
 424         m_controller->emitViewportEntered();
 425     }
 426 }
 427
 428 void DolphinDetailsView::updateElasticBand()
 429 {
 430     if (m_showElasticBand) {
 431         QRect dirtyRegion(elasticBandRect());
 432         m_elasticBandDestination = viewport()->mapFromGlobal(QCursor::pos());
 433         dirtyRegion = dirtyRegion.united(elasticBandRect());
 434         setDirtyRegion(dirtyRegion);
 435     }
 436 }
 437
 438 QRect DolphinDetailsView::elasticBandRect() const
 439 {
 440     const QPoint pos(contentsPos());
 441     const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
 442     return QRect(topLeft, m_elasticBandDestination).normalized();
 443 }
 444
 445 void DolphinDetailsView::zoomIn()
 446 {
 447     if (isZoomInPossible()) {
 448         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 449         switch (settings->iconSize()) {
 450         case KIconLoader::SizeSmall:  settings->setIconSize(KIconLoader::SizeMedium); break;
 451         case KIconLoader::SizeMedium: settings->setIconSize(KIconLoader::SizeLarge); break;
 452         default: Q_ASSERT(false); break;
 453         }
 454         updateDecorationSize();
 455     }
 456 }
 457
 458 void DolphinDetailsView::zoomOut()
 459 {
 460     if (isZoomOutPossible()) {
 461         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 462         switch (settings->iconSize()) {
 463         case KIconLoader::SizeLarge:  settings->setIconSize(KIconLoader::SizeMedium); break;
 464         case KIconLoader::SizeMedium: settings->setIconSize(KIconLoader::SizeSmall); break;
 465         default: Q_ASSERT(false); break;
 466         }
 467         updateDecorationSize();
 468     }
 469 }
 470
 471 void DolphinDetailsView::triggerItem(const QModelIndex& index)
 472 {
 473     const KFileItem item = itemForIndex(index);
 474     if (index.isValid() && (index.column() == KDirModel::Name)) {
 475         m_controller->triggerItem(item);
 476     } else {
 477         clearSelection();
 478         m_controller->emitItemEntered(item);
 479     }
 480 }
 481
 482 void DolphinDetailsView::configureColumns(const QPoint& pos)
 483 {
 484     KMenu popup(this);
 485     popup.addTitle(i18nc("@title:menu", "Columns"));
 486
 487     QHeaderView* headerView = header();
 488     for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
 489         const int logicalIndex = headerView->logicalIndex(i);
 490         const QString text = model()->headerData(i, Qt::Horizontal).toString();
 491         QAction* action = popup.addAction(text);
 492         action->setCheckable(true);
 493         action->setChecked(!headerView->isSectionHidden(logicalIndex));
 494         action->setData(i);
 495     }
 496
 497     QAction* activatedAction = popup.exec(header()->mapToGlobal(pos));
 498     if (activatedAction != 0) {
 499         const bool show = activatedAction->isChecked();
 500         const int columnIndex = activatedAction->data().toInt();
 501
 502         KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
 503         const KFileItemDelegate::Information info = infoForColumn(columnIndex);
 504         if (show) {
 505             Q_ASSERT(!list.contains(info));
 506             list.append(info);
 507         } else {
 508             Q_ASSERT(list.contains(info));
 509             const int index = list.indexOf(info);
 510             list.removeAt(index);
 511         }
 512
 513         m_controller->indicateAdditionalInfoChange(list);
 514         setColumnHidden(columnIndex, !show);
 515     }
 516 }
 517
 518 void DolphinDetailsView::updateColumnVisibility()
 519 {
 520     const KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
 521     for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
 522         const KFileItemDelegate::Information info = infoForColumn(i);
 523         const bool hide = !list.contains(info);
 524         if (isColumnHidden(i) != hide) {
 525             setColumnHidden(i, hide);
 526         }
 527     }
 528
 529     resizeColumns();
 530 }
 531
 532 void DolphinDetailsView::slotHeaderSectionResized(int logicalIndex, int oldSize, int newSize)
 533 {
 534     Q_UNUSED(logicalIndex);
 535     Q_UNUSED(oldSize);
 536     Q_UNUSED(newSize);
 537     if (QApplication::mouseButtons() & Qt::LeftButton) {
 538         disableAutoResizing();
 539     }
 540 }
 541
 542 void DolphinDetailsView::disableAutoResizing()
 543 {
 544     m_autoResize = false;
 545 }
 546
 547 void DolphinDetailsView::requestActivation()
 548 {
 549     m_controller->requestActivation();
 550 }
 551
 552 bool DolphinDetailsView::isZoomInPossible() const
 553 {
 554     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 555     return settings->iconSize() < KIconLoader::SizeLarge;
 556 }
 557
 558 bool DolphinDetailsView::isZoomOutPossible() const
 559 {
 560     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 561     return settings->iconSize() > KIconLoader::SizeSmall;
 562 }
 563
 564 void DolphinDetailsView::updateDecorationSize()
 565 {
 566     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 567     const int iconSize = settings->iconSize();
 568     setIconSize(QSize(iconSize, iconSize));
 569     m_decorationSize = QSize(iconSize, iconSize);
 570
 571     m_controller->setZoomInPossible(isZoomInPossible());
 572     m_controller->setZoomOutPossible(isZoomOutPossible());
 573
 574     doItemsLayout();
 575 }
 576
 577 QPoint DolphinDetailsView::contentsPos() const
 578 {
 579     // implementation note: the horizonal position is ignored currently, as no
 580     // horizontal scrolling is done anyway during a selection
 581     const QScrollBar* scrollbar = verticalScrollBar();
 582     Q_ASSERT(scrollbar != 0);
 583
 584     const int maxHeight = maximumViewportSize().height();
 585     const int height = scrollbar->maximum() - scrollbar->minimum() + 1;
 586     const int visibleHeight = model()->rowCount() + 1 - height;
 587     if (visibleHeight <= 0) {
 588         return QPoint(0, 0);
 589     }
 590
 591     const int y = scrollbar->sliderPosition() * maxHeight / visibleHeight;
 592     return QPoint(0, y);
 593 }
 594
 595 KFileItem DolphinDetailsView::itemForIndex(const QModelIndex& index) const
 596 {
 597     QAbstractProxyModel* proxyModel = static_cast<QAbstractProxyModel*>(model());
 598     KDirModel* dirModel = static_cast<KDirModel*>(proxyModel->sourceModel());
 599     const QModelIndex dirIndex = proxyModel->mapToSource(index);
 600     return dirModel->itemForIndex(dirIndex);
 601 }
 602
 603 KFileItemDelegate::Information DolphinDetailsView::infoForColumn(int columnIndex) const
 604 {
 605     KFileItemDelegate::Information info = KFileItemDelegate::NoInformation;
 606
 607     switch (columnIndex) {
 608     case DolphinModel::Size:         info = KFileItemDelegate::Size; break;
 609     case DolphinModel::ModifiedTime: info = KFileItemDelegate::ModificationTime; break;
 610     case DolphinModel::Permissions:  info = KFileItemDelegate::Permissions; break;
 611     case DolphinModel::Owner:        info = KFileItemDelegate::Owner; break;
 612     case DolphinModel::Group:        info = KFileItemDelegate::OwnerAndGroup; break;
 613     case DolphinModel::Type:         info = KFileItemDelegate::FriendlyMimeType; break;
 614     default: break;
 615     }
 616
 617     return info;
 618 }
 619
 620 void DolphinDetailsView::resizeColumns()
 621 {
 622     // Using the resize mode QHeaderView::ResizeToContents is too slow (it takes
 623     // around 3 seconds for each (!) resize operation when having > 10000 items).
 624     // This gets a problem especially when opening large directories, where several
 625     // resize operations are received for showing the currently available items during
 626     // loading (the application hangs around 20 seconds when loading > 10000 items).
 627
 628     QHeaderView* headerView = header();
 629     QFontMetrics fontMetrics(viewport()->font());
 630
 631     int columnWidth[KDirModel::ColumnCount];
 632     columnWidth[KDirModel::Size] = fontMetrics.width("00000 Items");
 633     columnWidth[KDirModel::ModifiedTime] = fontMetrics.width("0000-00-00 00:00");
 634     columnWidth[KDirModel::Permissions] = fontMetrics.width("xxxxxxxxxx");
 635     columnWidth[KDirModel::Owner] = fontMetrics.width("xxxxxxxxxx");
 636     columnWidth[KDirModel::Group] = fontMetrics.width("xxxxxxxxxx");
 637     columnWidth[KDirModel::Type] = fontMetrics.width("XXXX Xxxxxxx");
 638
 639     int requiredWidth = 0;
 640     for (int i = KDirModel::Size; i <= KDirModel::Type; ++i) {
 641         if (!isColumnHidden(i)) {
 642             columnWidth[i] += 20; // provide a default gap
 643             requiredWidth += columnWidth[i];
 644             headerView->resizeSection(i, columnWidth[i]);
 645         }
 646     }
 647
 648     // resize the name column in a way that the whole available width is used
 649     columnWidth[KDirModel::Name] = viewport()->width() - requiredWidth;
 650     if (columnWidth[KDirModel::Name] < 120) {
 651         columnWidth[KDirModel::Name] = 120;
 652     }
 653     headerView->resizeSection(KDirModel::Name, columnWidth[KDirModel::Name]);
 654 }
 655
 656 #include "dolphindetailsview.moc"