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         if (DolphinSettings::instance().generalSettings()->showSelectionToggle()) {
 104             m_selectionManager = new SelectionManager(this);
 105             connect(m_selectionManager, SIGNAL(selectionChanged()),
 106                     this, SLOT(requestActivation()));
 107             connect(m_controller, SIGNAL(urlChanged(const KUrl&)),
 108                     m_selectionManager, SLOT(reset()));
 109          }
 110     } else {
 111         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 112                 controller, SLOT(triggerItem(const QModelIndex&)));
 113     }
 114     connect(this, SIGNAL(entered(const QModelIndex&)),
 115             this, SLOT(slotEntered(const QModelIndex&)));
 116     connect(this, SIGNAL(viewportEntered()),
 117             controller, SLOT(emitViewportEntered()));
 118     connect(controller, SIGNAL(zoomIn()),
 119             this, SLOT(zoomIn()));
 120     connect(controller, SIGNAL(zoomOut()),
 121             this, SLOT(zoomOut()));
 122     connect(controller->dolphinView(), SIGNAL(additionalInfoChanged()),
 123             this, SLOT(updateColumnVisibility()));
 124
 125     if (settings->useSystemFont()) {
 126         m_font = KGlobalSettings::generalFont();
 127     } else {
 128         m_font = QFont(settings->fontFamily(),
 129                        settings->fontSize(),
 130                        settings->fontWeight(),
 131                        settings->italicFont());
 132     }
 133
 134     setVerticalScrollMode(QTreeView::ScrollPerPixel);
 135     setHorizontalScrollMode(QTreeView::ScrollPerPixel);
 136
 137     updateDecorationSize();
 138
 139     setFocus();
 140     viewport()->installEventFilter(this);
 141
 142     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 143             this, SLOT(updateFont()));
 144 }
 145
 146 DolphinDetailsView::~DolphinDetailsView()
 147 {
 148 }
 149
 150 bool DolphinDetailsView::event(QEvent* event)
 151 {
 152     if (event->type() == QEvent::Polish) {
 153         QHeaderView* headerView = header();
 154         headerView->setResizeMode(QHeaderView::Interactive);
 155         headerView->setMovable(false);
 156
 157         updateColumnVisibility();
 158
 159         hideColumn(DolphinModel::Rating);
 160         hideColumn(DolphinModel::Tags);
 161     } else if (event->type() == QEvent::UpdateRequest) {
 162         // a wheel movement will scroll 4 items
 163         if (model()->rowCount() > 0) {
 164             verticalScrollBar()->setSingleStep((sizeHintForRow(0) / 3) * 4);
 165         }
 166     }
 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     const QModelIndex current = currentIndex();
 191     QTreeView::mousePressEvent(event);
 192
 193     m_expandingTogglePressed = false;
 194     const QModelIndex index = indexAt(event->pos());
 195     const bool updateState = index.isValid() &&
 196                              (index.column() == DolphinModel::Name) &&
 197                              (event->button() == Qt::LeftButton);
 198     if (updateState) {
 199         // TODO: See comment in DolphinIconsView::mousePressEvent(). Only update
 200         // the state if no expanding/collapsing area has been hit:
 201         const QRect rect = visualRect(index);
 202         if (event->pos().x() >= rect.x() + indentation()) {
 203             setState(QAbstractItemView::DraggingState);
 204         } else {
 205             m_expandingTogglePressed = true;
 206         }
 207     }
 208
 209     if (!index.isValid() || (index.column() != DolphinModel::Name)) {
 210         if (QApplication::mouseButtons() & Qt::MidButton) {
 211             m_controller->replaceUrlByClipboard();
 212         }
 213
 214         const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 215         if (!(modifier & Qt::ShiftModifier) && !(modifier & Qt::ControlModifier)) {
 216             clearSelection();
 217         }
 218
 219         // restore the current index, other columns are handled as viewport area
 220         selectionModel()->setCurrentIndex(current, QItemSelectionModel::Current);
 221     }
 222
 223     if ((event->button() == Qt::LeftButton) && !m_expandingTogglePressed) {
 224         m_showElasticBand = true;
 225
 226         const QPoint pos(contentsPos());
 227         m_elasticBandOrigin = event->pos();
 228         m_elasticBandOrigin.setX(m_elasticBandOrigin.x() + pos.x());
 229         m_elasticBandOrigin.setY(m_elasticBandOrigin.y() + pos.y());
 230         m_elasticBandDestination = event->pos();
 231     }
 232 }
 233
 234 void DolphinDetailsView::mouseMoveEvent(QMouseEvent* event)
 235 {
 236     if (m_showElasticBand) {
 237         const QPoint mousePos = event->pos();
 238         const QModelIndex index = indexAt(mousePos);
 239         if (!index.isValid()) {
 240             // the destination of the selection rectangle is above the viewport. In this
 241             // case QTreeView does no selection at all, which is not the wanted behavior
 242             // in Dolphin -> select all items within the elastic band rectangle
 243             clearSelection();
 244
 245             const int nameColumnWidth = header()->sectionSize(DolphinModel::Name);
 246             QRect selRect = QRect(m_elasticBandOrigin, m_elasticBandDestination).normalized();
 247             const QRect nameColumnsRect(0, 0, nameColumnWidth, viewport()->height());
 248             selRect = nameColumnsRect.intersected(selRect);
 249
 250             setSelection(selRect, QItemSelectionModel::Select);
 251         }
 252
 253         // TODO: enable QTreeView::mouseMoveEvent(event) again, as soon
 254         // as the Qt-issue #199631 has been fixed.
 255         // QTreeView::mouseMoveEvent(event);
 256         QAbstractItemView::mouseMoveEvent(event);
 257         updateElasticBand();
 258     } else {
 259         // TODO: enable QTreeView::mouseMoveEvent(event) again, as soon
 260         // as the Qt-issue #199631 has been fixed.
 261         // QTreeView::mouseMoveEvent(event);
 262         QAbstractItemView::mouseMoveEvent(event);
 263     }
 264
 265     if (m_expandingTogglePressed) {
 266         // Per default QTreeView starts either a selection or a drag operation when dragging
 267         // the expanding toggle button (Qt-issue - see TODO comment in DolphinIconsView::mousePressEvent()).
 268         // Turn off this behavior in Dolphin to stay predictable:
 269         clearSelection();
 270         setState(QAbstractItemView::NoState);
 271     }
 272 }
 273
 274 void DolphinDetailsView::mouseReleaseEvent(QMouseEvent* event)
 275 {
 276     const QModelIndex index = indexAt(event->pos());
 277     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 278         QTreeView::mouseReleaseEvent(event);
 279     } else {
 280         // don't change the current index if the cursor is released
 281         // above any other column than the name column, as the other
 282         // columns act as viewport
 283         const QModelIndex current = currentIndex();
 284         QTreeView::mouseReleaseEvent(event);
 285         selectionModel()->setCurrentIndex(current, QItemSelectionModel::Current);
 286     }
 287
 288     m_expandingTogglePressed = false;
 289     if (m_showElasticBand) {
 290         updateElasticBand();
 291         m_showElasticBand = false;
 292     }
 293 }
 294
 295 void DolphinDetailsView::startDrag(Qt::DropActions supportedActions)
 296 {
 297     DragAndDropHelper::startDrag(this, supportedActions);
 298     m_showElasticBand = false;
 299 }
 300
 301 void DolphinDetailsView::dragEnterEvent(QDragEnterEvent* event)
 302 {
 303     if (event->mimeData()->hasUrls()) {
 304         event->acceptProposedAction();
 305     }
 306
 307     if (m_showElasticBand) {
 308         updateElasticBand();
 309         m_showElasticBand = false;
 310     }
 311 }
 312
 313 void DolphinDetailsView::dragLeaveEvent(QDragLeaveEvent* event)
 314 {
 315     QTreeView::dragLeaveEvent(event);
 316     setDirtyRegion(m_dropRect);
 317 }
 318
 319 void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* event)
 320 {
 321     QTreeView::dragMoveEvent(event);
 322
 323     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 324     setDirtyRegion(m_dropRect);
 325     const QModelIndex index = indexAt(event->pos());
 326     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 327         const KFileItem item = m_controller->itemForIndex(index);
 328         if (!item.isNull() && item.isDir()) {
 329             m_dropRect = visualRect(index);
 330         } else {
 331             m_dropRect.setSize(QSize()); // set as invalid
 332         }
 333         setDirtyRegion(m_dropRect);
 334     }
 335
 336     if (event->mimeData()->hasUrls()) {
 337         // accept url drops, independently from the destination item
 338         event->acceptProposedAction();
 339     }
 340 }
 341
 342 void DolphinDetailsView::dropEvent(QDropEvent* event)
 343 {
 344     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 345     if (!urls.isEmpty()) {
 346         event->acceptProposedAction();
 347         const QModelIndex index = indexAt(event->pos());
 348         KFileItem item;
 349         if (index.isValid() && (index.column() == DolphinModel::Name)) {
 350             item = m_controller->itemForIndex(index);
 351         }
 352         m_controller->indicateDroppedUrls(urls,
 353                                           m_controller->url(),
 354                                           item);
 355     }
 356     QTreeView::dropEvent(event);
 357 }
 358
 359 void DolphinDetailsView::paintEvent(QPaintEvent* event)
 360 {
 361     QTreeView::paintEvent(event);
 362     if (m_showElasticBand) {
 363         // The following code has been taken from QListView
 364         // and adapted to DolphinDetailsView.
 365         // (C) 1992-2007 Trolltech ASA
 366         QStyleOptionRubberBand opt;
 367         opt.initFrom(this);
 368         opt.shape = QRubberBand::Rectangle;
 369         opt.opaque = false;
 370         opt.rect = elasticBandRect();
 371
 372         QPainter painter(viewport());
 373         painter.save();
 374         style()->drawControl(QStyle::CE_RubberBand, &opt, &painter);
 375         painter.restore();
 376     }
 377 }
 378
 379 void DolphinDetailsView::keyPressEvent(QKeyEvent* event)
 380 {
 381     m_keyPressed = true;
 382     QTreeView::keyPressEvent(event);
 383     m_controller->handleKeyPressEvent(event);
 384 }
 385
 386 void DolphinDetailsView::keyReleaseEvent(QKeyEvent* event)
 387 {
 388     QTreeView::keyReleaseEvent(event);
 389     m_keyPressed = false;
 390 }
 391
 392 void DolphinDetailsView::resizeEvent(QResizeEvent* event)
 393 {
 394     if (m_autoResize) {
 395         resizeColumns();
 396     }
 397     QTreeView::resizeEvent(event);
 398 }
 399
 400 void DolphinDetailsView::wheelEvent(QWheelEvent* event)
 401 {
 402     if (m_selectionManager != 0) {
 403         m_selectionManager->reset();
 404     }
 405
 406     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 407     if (event->modifiers() & Qt::ControlModifier) {
 408         event->ignore();
 409         return;
 410     }
 411
 412     QTreeView::wheelEvent(event);
 413 }
 414
 415 void DolphinDetailsView::currentChanged(const QModelIndex& current, const QModelIndex& previous)
 416 {
 417     QTreeView::currentChanged(current, previous);
 418
 419     // Stay consistent with QListView: When changing the current index by key presses,
 420     // also change the selection.
 421     if (m_keyPressed) {
 422         selectionModel()->select(current, QItemSelectionModel::ClearAndSelect);
 423     }
 424 }
 425
 426 bool DolphinDetailsView::eventFilter(QObject* watched, QEvent* event)
 427 {
 428     if ((watched == viewport()) && (event->type() == QEvent::Leave)) {
 429         // if the mouse is above an item and moved very fast outside the widget,
 430         // no viewportEntered() signal might be emitted although the mouse has been moved
 431         // above the viewport
 432         m_controller->emitViewportEntered();
 433     }
 434
 435     return QTreeView::eventFilter(watched, event);
 436 }
 437
 438 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
 439 {
 440     QHeaderView* headerView = header();
 441     headerView->setSortIndicator(sorting, headerView->sortIndicatorOrder());
 442 }
 443
 444 void DolphinDetailsView::setSortIndicatorOrder(Qt::SortOrder sortOrder)
 445 {
 446     QHeaderView* headerView = header();
 447     headerView->setSortIndicator(headerView->sortIndicatorSection(), sortOrder);
 448 }
 449
 450 void DolphinDetailsView::synchronizeSortingState(int column)
 451 {
 452     // The sorting has already been changed in QTreeView if this slot is
 453     // invoked, but Dolphin is not informed about this.
 454     DolphinView::Sorting sorting = DolphinSortFilterProxyModel::sortingForColumn(column);
 455     const Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
 456     m_controller->indicateSortingChange(sorting);
 457     m_controller->indicateSortOrderChange(sortOrder);
 458 }
 459
 460 void DolphinDetailsView::slotEntered(const QModelIndex& index)
 461 {
 462     if (index.column() == DolphinModel::Name) {
 463         m_controller->emitItemEntered(index);
 464     } else {
 465         m_controller->emitViewportEntered();
 466     }
 467 }
 468
 469 void DolphinDetailsView::updateElasticBand()
 470 {
 471     if (m_showElasticBand) {
 472         QRect dirtyRegion(elasticBandRect());
 473         m_elasticBandDestination = viewport()->mapFromGlobal(QCursor::pos());
 474         dirtyRegion = dirtyRegion.united(elasticBandRect());
 475         setDirtyRegion(dirtyRegion);
 476     }
 477 }
 478
 479 QRect DolphinDetailsView::elasticBandRect() const
 480 {
 481     const QPoint pos(contentsPos());
 482     const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
 483     return QRect(topLeft, m_elasticBandDestination).normalized();
 484 }
 485
 486 void DolphinDetailsView::zoomIn()
 487 {
 488     if (isZoomInPossible()) {
 489         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 490         switch (settings->iconSize()) {
 491         case KIconLoader::SizeSmall:  settings->setIconSize(KIconLoader::SizeMedium); break;
 492         case KIconLoader::SizeMedium: settings->setIconSize(KIconLoader::SizeLarge); break;
 493         default: Q_ASSERT(false); break;
 494         }
 495         updateDecorationSize();
 496     }
 497 }
 498
 499 void DolphinDetailsView::zoomOut()
 500 {
 501     if (isZoomOutPossible()) {
 502         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 503         switch (settings->iconSize()) {
 504         case KIconLoader::SizeLarge:  settings->setIconSize(KIconLoader::SizeMedium); break;
 505         case KIconLoader::SizeMedium: settings->setIconSize(KIconLoader::SizeSmall); break;
 506         default: Q_ASSERT(false); break;
 507         }
 508         updateDecorationSize();
 509     }
 510 }
 511
 512 void DolphinDetailsView::configureColumns(const QPoint& pos)
 513 {
 514     KMenu popup(this);
 515     popup.addTitle(i18nc("@title:menu", "Columns"));
 516
 517     QHeaderView* headerView = header();
 518     for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
 519         const int logicalIndex = headerView->logicalIndex(i);
 520         const QString text = model()->headerData(i, Qt::Horizontal).toString();
 521         QAction* action = popup.addAction(text);
 522         action->setCheckable(true);
 523         action->setChecked(!headerView->isSectionHidden(logicalIndex));
 524         action->setData(i);
 525     }
 526
 527     QAction* activatedAction = popup.exec(header()->mapToGlobal(pos));
 528     if (activatedAction != 0) {
 529         const bool show = activatedAction->isChecked();
 530         const int columnIndex = activatedAction->data().toInt();
 531
 532         KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
 533         const KFileItemDelegate::Information info = infoForColumn(columnIndex);
 534         if (show) {
 535             Q_ASSERT(!list.contains(info));
 536             list.append(info);
 537         } else {
 538             Q_ASSERT(list.contains(info));
 539             const int index = list.indexOf(info);
 540             list.removeAt(index);
 541         }
 542
 543         m_controller->indicateAdditionalInfoChange(list);
 544         setColumnHidden(columnIndex, !show);
 545     }
 546 }
 547
 548 void DolphinDetailsView::updateColumnVisibility()
 549 {
 550     const KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
 551     for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
 552         const KFileItemDelegate::Information info = infoForColumn(i);
 553         const bool hide = !list.contains(info);
 554         if (isColumnHidden(i) != hide) {
 555             setColumnHidden(i, hide);
 556         }
 557     }
 558
 559     resizeColumns();
 560 }
 561
 562 void DolphinDetailsView::slotHeaderSectionResized(int logicalIndex, int oldSize, int newSize)
 563 {
 564     Q_UNUSED(logicalIndex);
 565     Q_UNUSED(oldSize);
 566     Q_UNUSED(newSize);
 567     if (QApplication::mouseButtons() & Qt::LeftButton) {
 568         disableAutoResizing();
 569     }
 570 }
 571
 572 void DolphinDetailsView::disableAutoResizing()
 573 {
 574     m_autoResize = false;
 575 }
 576
 577 void DolphinDetailsView::requestActivation()
 578 {
 579     m_controller->requestActivation();
 580 }
 581
 582 void DolphinDetailsView::updateFont()
 583 {
 584     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 585     Q_ASSERT(settings != 0);
 586
 587     if (settings->useSystemFont()) {
 588         m_font = KGlobalSettings::generalFont();
 589     }
 590 }
 591
 592 bool DolphinDetailsView::isZoomInPossible() const
 593 {
 594     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 595     return settings->iconSize() < KIconLoader::SizeLarge;
 596 }
 597
 598 bool DolphinDetailsView::isZoomOutPossible() const
 599 {
 600     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 601     return settings->iconSize() > KIconLoader::SizeSmall;
 602 }
 603
 604 void DolphinDetailsView::updateDecorationSize()
 605 {
 606     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 607     const int iconSize = settings->iconSize();
 608     setIconSize(QSize(iconSize, iconSize));
 609     m_decorationSize = QSize(iconSize, iconSize);
 610
 611     m_controller->setZoomInPossible(isZoomInPossible());
 612     m_controller->setZoomOutPossible(isZoomOutPossible());
 613
 614     if (m_selectionManager != 0) {
 615         m_selectionManager->reset();
 616     }
 617
 618     doItemsLayout();
 619 }
 620
 621 QPoint DolphinDetailsView::contentsPos() const
 622 {
 623     // implementation note: the horizonal position is ignored currently, as no
 624     // horizontal scrolling is done anyway during a selection
 625     const QScrollBar* scrollbar = verticalScrollBar();
 626     Q_ASSERT(scrollbar != 0);
 627
 628     const int maxHeight = maximumViewportSize().height();
 629     const int height = scrollbar->maximum() - scrollbar->minimum() + 1;
 630     const int visibleHeight = model()->rowCount() + 1 - height;
 631     if (visibleHeight <= 0) {
 632         return QPoint(0, 0);
 633     }
 634
 635     const int y = scrollbar->sliderPosition() * maxHeight / visibleHeight;
 636     return QPoint(0, y);
 637 }
 638
 639 KFileItemDelegate::Information DolphinDetailsView::infoForColumn(int columnIndex) const
 640 {
 641     KFileItemDelegate::Information info = KFileItemDelegate::NoInformation;
 642
 643     switch (columnIndex) {
 644     case DolphinModel::Size:         info = KFileItemDelegate::Size; break;
 645     case DolphinModel::ModifiedTime: info = KFileItemDelegate::ModificationTime; break;
 646     case DolphinModel::Permissions:  info = KFileItemDelegate::Permissions; break;
 647     case DolphinModel::Owner:        info = KFileItemDelegate::Owner; break;
 648     case DolphinModel::Group:        info = KFileItemDelegate::OwnerAndGroup; break;
 649     case DolphinModel::Type:         info = KFileItemDelegate::FriendlyMimeType; break;
 650     default: break;
 651     }
 652
 653     return info;
 654 }
 655
 656 void DolphinDetailsView::resizeColumns()
 657 {
 658     // Using the resize mode QHeaderView::ResizeToContents is too slow (it takes
 659     // around 3 seconds for each (!) resize operation when having > 10000 items).
 660     // This gets a problem especially when opening large directories, where several
 661     // resize operations are received for showing the currently available items during
 662     // loading (the application hangs around 20 seconds when loading > 10000 items).
 663
 664     QHeaderView* headerView = header();
 665     QFontMetrics fontMetrics(viewport()->font());
 666
 667     int columnWidth[KDirModel::ColumnCount];
 668     columnWidth[KDirModel::Size] = fontMetrics.width("00000 Items");
 669     columnWidth[KDirModel::ModifiedTime] = fontMetrics.width("0000-00-00 00:00");
 670     columnWidth[KDirModel::Permissions] = fontMetrics.width("xxxxxxxxxx");
 671     columnWidth[KDirModel::Owner] = fontMetrics.width("xxxxxxxxxx");
 672     columnWidth[KDirModel::Group] = fontMetrics.width("xxxxxxxxxx");
 673     columnWidth[KDirModel::Type] = fontMetrics.width("XXXX Xxxxxxx");
 674
 675     int requiredWidth = 0;
 676     for (int i = KDirModel::Size; i <= KDirModel::Type; ++i) {
 677         if (!isColumnHidden(i)) {
 678             columnWidth[i] += 20; // provide a default gap
 679             requiredWidth += columnWidth[i];
 680             headerView->resizeSection(i, columnWidth[i]);
 681         }
 682     }
 683
 684     // resize the name column in a way that the whole available width is used
 685     columnWidth[KDirModel::Name] = viewport()->width() - requiredWidth;
 686     if (columnWidth[KDirModel::Name] < 120) {
 687         columnWidth[KDirModel::Name] = 120;
 688     }
 689     headerView->resizeSection(KDirModel::Name, columnWidth[KDirModel::Name]);
 690 }
 691
 692 #include "dolphindetailsview.moc"