src/kitemviews/kitemlistcontroller.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com>             *
   3  *                                                                         *
   4  *   Based on the Itemviews NG project from Trolltech Labs:                *
   5  *   http://qt.gitorious.org/qt-labs/itemviews-ng                          *
   6  *                                                                         *
   7  *   This program is free software; you can redistribute it and/or modify  *
   8  *   it under the terms of the GNU General Public License as published by  *
   9  *   the Free Software Foundation; either version 2 of the License, or     *
  10  *   (at your option) any later version.                                   *
  11  *                                                                         *
  12  *   This program is distributed in the hope that it will be useful,       *
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  15  *   GNU General Public License for more details.                          *
  16  *                                                                         *
  17  *   You should have received a copy of the GNU General Public License     *
  18  *   along with this program; if not, write to the                         *
  19  *   Free Software Foundation, Inc.,                                       *
  20  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  21  ***************************************************************************/
  22
  23 #include "kitemlistcontroller.h"
  24
  25 #include "kitemlistview.h"
  26 #include "kitemlistrubberband_p.h"
  27 #include "kitemlistselectionmanager.h"
  28
  29 #include <QApplication>
  30 #include <QDrag>
  31 #include <QEvent>
  32 #include <QGraphicsSceneEvent>
  33 #include <QMimeData>
  34
  35 #include <KGlobalSettings>
  36 #include <KDebug>
  37
  38 KItemListController::KItemListController(QObject* parent) :
  39     QObject(parent),
  40     m_dragging(false),
  41     m_selectionBehavior(NoSelection),
  42     m_model(0),
  43     m_view(0),
  44     m_selectionManager(new KItemListSelectionManager(this)),
  45     m_pressedIndex(-1),
  46     m_pressedMousePos(),
  47     m_oldSelection()
  48 {
  49 }
  50
  51 KItemListController::~KItemListController()
  52 {
  53 }
  54
  55 void KItemListController::setModel(KItemModelBase* model)
  56 {
  57     if (m_model == model) {
  58         return;
  59     }
  60
  61     KItemModelBase* oldModel = m_model;
  62     m_model = model;
  63
  64     if (m_view) {
  65         m_view->setModel(m_model);
  66     }
  67
  68     m_selectionManager->setModel(m_model);
  69
  70     emit modelChanged(m_model, oldModel);
  71 }
  72
  73 KItemModelBase* KItemListController::model() const
  74 {
  75     return m_model;
  76 }
  77
  78 KItemListSelectionManager* KItemListController::selectionManager() const
  79 {
  80     return m_selectionManager;
  81 }
  82
  83 void KItemListController::setView(KItemListView* view)
  84 {
  85     if (m_view == view) {
  86         return;
  87     }
  88
  89     KItemListView* oldView = m_view;
  90     if (oldView) {
  91         disconnect(oldView, SIGNAL(offsetChanged(qreal,qreal)), this, SLOT(slotViewOffsetChanged(qreal,qreal)));
  92     }
  93
  94     m_view = view;
  95
  96     if (m_view) {
  97         m_view->setController(this);
  98         m_view->setModel(m_model);
  99         connect(m_view, SIGNAL(offsetChanged(qreal,qreal)), this, SLOT(slotViewOffsetChanged(qreal,qreal)));
 100     }
 101
 102     emit viewChanged(m_view, oldView);
 103 }
 104
 105 KItemListView* KItemListController::view() const
 106 {
 107     return m_view;
 108 }
 109
 110 void KItemListController::setSelectionBehavior(SelectionBehavior behavior)
 111 {
 112     m_selectionBehavior = behavior;
 113 }
 114
 115 KItemListController::SelectionBehavior KItemListController::selectionBehavior() const
 116 {
 117     return m_selectionBehavior;
 118 }
 119
 120 bool KItemListController::showEvent(QShowEvent* event)
 121 {
 122     Q_UNUSED(event);
 123     return false;
 124 }
 125
 126 bool KItemListController::hideEvent(QHideEvent* event)
 127 {
 128     Q_UNUSED(event);
 129     return false;
 130 }
 131
 132 bool KItemListController::keyPressEvent(QKeyEvent* event)
 133 {
 134     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
 135     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
 136     const bool shiftOrControlPressed = shiftPressed || controlPressed;
 137
 138     int index = m_selectionManager->currentItem();
 139     const int itemCount = m_model->count();
 140     const int itemsPerRow = m_view->itemsPerOffset();
 141
 142     // For horizontal scroll orientation, transform
 143     // the arrow keys to simplify the event handling.
 144     int key = event->key();
 145     if (m_view->scrollOrientation() == Qt::Horizontal) {
 146         switch (key) {
 147         case Qt::Key_Up:    key = Qt::Key_Left; break;
 148         case Qt::Key_Down:  key = Qt::Key_Right; break;
 149         case Qt::Key_Left:  key = Qt::Key_Up; break;
 150         case Qt::Key_Right: key = Qt::Key_Down; break;
 151         default:            break;
 152         }
 153     }
 154
 155     switch (key) {
 156     case Qt::Key_Home:
 157         index = 0;
 158         break;
 159
 160     case Qt::Key_End:
 161         index = itemCount - 1;
 162         break;
 163
 164     case Qt::Key_Left:
 165         if (index > 0) {
 166             index--;
 167         }
 168         break;
 169
 170     case Qt::Key_Right:
 171         if (index < itemCount - 1) {
 172             index++;
 173         }
 174         break;
 175
 176     case Qt::Key_Up:
 177         if (index >= itemsPerRow) {
 178             index -= itemsPerRow;
 179         }
 180         break;
 181
 182     case Qt::Key_Down:
 183         if (index + itemsPerRow < itemCount) {
 184             // We are not in the last row yet.
 185             index += itemsPerRow;
 186         }
 187         else {
 188             // We are either in the last row already, or we are in the second-last row,
 189             // and there is no item below the current item.
 190             // In the latter case, we jump to the very last item.
 191             const int currentColumn = index % itemsPerRow;
 192             const int lastItemColumn = (itemCount - 1) % itemsPerRow;
 193             const bool inLastRow = currentColumn < lastItemColumn;
 194             if (!inLastRow) {
 195                 index = itemCount - 1;
 196             }
 197         }
 198         break;
 199
 200     case Qt::Key_Space:
 201         if (controlPressed) {
 202             m_selectionManager->endAnchoredSelection();
 203             m_selectionManager->setSelected(index, 1, KItemListSelectionManager::Toggle);
 204             m_selectionManager->beginAnchoredSelection(index);
 205         }
 206
 207     default:
 208         break;
 209     }
 210
 211     if (m_selectionManager->currentItem() != index) {
 212         if (controlPressed) {
 213             m_selectionManager->endAnchoredSelection();
 214         }
 215
 216         m_selectionManager->setCurrentItem(index);
 217
 218         if (!shiftOrControlPressed || m_selectionBehavior == SingleSelection) {
 219             m_selectionManager->clearSelection();
 220             m_selectionManager->setSelected(index, 1);
 221         }
 222
 223         if (!shiftPressed) {
 224             m_selectionManager->beginAnchoredSelection(index);
 225         }
 226     }
 227     return true;
 228 }
 229
 230 bool KItemListController::inputMethodEvent(QInputMethodEvent* event)
 231 {
 232     Q_UNUSED(event);
 233     return false;
 234 }
 235
 236 bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 237 {
 238     if (!m_view) {
 239         return false;
 240     }
 241
 242     m_dragging = false;
 243     m_pressedMousePos = transform.map(event->pos());
 244     m_pressedIndex = m_view->itemAt(m_pressedMousePos);
 245
 246     if (m_view->isAboveExpansionToggle(m_pressedIndex, m_pressedMousePos)) {
 247         return true;
 248     }
 249
 250     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
 251     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
 252
 253     if (m_selectionBehavior == SingleSelection) {
 254         m_selectionManager->clearSelection();
 255     }
 256
 257     if (!shiftPressed) {
 258         // Finish the anchored selection before the current index is changed
 259         m_selectionManager->endAnchoredSelection();
 260     }
 261
 262     if (m_pressedIndex >= 0) {
 263         m_selectionManager->setCurrentItem(m_pressedIndex);
 264
 265         switch (m_selectionBehavior) {
 266         case NoSelection:
 267             break;
 268
 269         case SingleSelection:
 270             m_selectionManager->setSelected(m_pressedIndex);
 271             break;
 272
 273         case MultiSelection:
 274             if (controlPressed) {
 275                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 276                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 277             } else if (!shiftPressed || !m_selectionManager->isAnchoredSelectionActive()) {
 278                 // Select the pressed item and start a new anchored selection
 279                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select);
 280                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 281             }
 282             break;
 283
 284         default:
 285             Q_ASSERT(false);
 286             break;
 287         }
 288
 289         return true;
 290     } else {
 291         KItemListRubberBand* rubberBand = m_view->rubberBand();
 292         QPointF startPos = m_pressedMousePos;
 293         if (m_view->scrollOrientation() == Qt::Vertical) {
 294             startPos.ry() += m_view->offset();
 295             if (m_view->itemSize().width() < 0) {
 296                 // Use a special rubberband for views that have only one column and
 297                 // expand the rubberband to use the whole width of the view.
 298                 startPos.setX(0);
 299             }
 300         } else {
 301             startPos.rx() += m_view->offset();
 302         }
 303
 304         m_oldSelection = m_selectionManager->selectedItems();
 305         rubberBand->setStartPosition(startPos);
 306         rubberBand->setEndPosition(startPos);
 307         rubberBand->setActive(true);
 308         connect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged()));
 309         m_view->setAutoScroll(true);
 310     }
 311
 312     return false;
 313 }
 314
 315 bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 316 {
 317     if (!m_view) {
 318         return false;
 319     }
 320
 321     if (m_pressedIndex >= 0) {
 322         // Check whether a dragging should be started
 323         if (!m_dragging && (event->buttons() & Qt::LeftButton)) {
 324             const QPointF pos = transform.map(event->pos());
 325             const qreal minDragDiff = 4;
 326             const bool hasMinDragDiff = qAbs(pos.x() - m_pressedMousePos.x()) >= minDragDiff ||
 327                                         qAbs(pos.y() - m_pressedMousePos.y()) >= minDragDiff;
 328             if (hasMinDragDiff && startDragging()) {
 329                 m_dragging = true;
 330             }
 331         }
 332     } else {
 333         KItemListRubberBand* rubberBand = m_view->rubberBand();
 334         if (rubberBand->isActive()) {
 335             QPointF endPos = transform.map(event->pos());
 336             if (m_view->scrollOrientation() == Qt::Vertical) {
 337                 endPos.ry() += m_view->offset();
 338                 if (m_view->itemSize().width() < 0) {
 339                     // Use a special rubberband for views that have only one column and
 340                     // expand the rubberband to use the whole width of the view.
 341                     endPos.setX(m_view->size().width());
 342                 }
 343             } else {
 344                 endPos.rx() += m_view->offset();
 345             }
 346             rubberBand->setEndPosition(endPos);
 347         }
 348     }
 349
 350     return false;
 351 }
 352
 353 bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 354 {
 355     if (!m_view) {
 356         return false;
 357     }
 358
 359     const bool shiftOrControlPressed = event->modifiers() & Qt::ShiftModifier ||
 360                                        event->modifiers() & Qt::ControlModifier;
 361
 362     bool clearSelection = !shiftOrControlPressed && !m_dragging && !(event->button() == Qt::RightButton);
 363
 364     KItemListRubberBand* rubberBand = m_view->rubberBand();
 365     if (rubberBand->isActive()) {
 366         disconnect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged()));
 367         rubberBand->setActive(false);
 368         m_oldSelection.clear();
 369         m_view->setAutoScroll(false);
 370
 371         if (rubberBand->startPosition() != rubberBand->endPosition()) {
 372             clearSelection = false;
 373         }
 374     }
 375
 376     const QPointF pos = transform.map(event->pos());
 377     const int index = m_view->itemAt(pos);
 378
 379     if (index >= 0 && index == m_pressedIndex) {
 380         // The release event is done above the same item as the press event
 381
 382         if (clearSelection) {
 383             // Clear the previous selection but reselect the current index
 384             m_selectionManager->setSelectedItems(QSet<int>() << index);
 385         }
 386
 387         bool emitItemClicked = true;
 388         if (event->button() & Qt::LeftButton) {
 389             if (m_view->isAboveExpansionToggle(index, pos)) {
 390                 emit itemExpansionToggleClicked(index);
 391                 emitItemClicked = false;
 392             } else if (shiftOrControlPressed || !KGlobalSettings::singleClick()) {
 393                 emitItemClicked = false;
 394             }
 395         }
 396
 397         if (emitItemClicked) {
 398             emit itemClicked(index, event->button());
 399         }
 400     } else if (clearSelection) {
 401         m_selectionManager->clearSelection();
 402     }
 403
 404     m_dragging = false;
 405     m_pressedMousePos = QPointF();
 406     m_pressedIndex = -1;
 407     return false;
 408 }
 409
 410 bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 411 {
 412     const QPointF pos = transform.map(event->pos());
 413     const int index = m_view->itemAt(pos);
 414
 415     bool emitItemClicked = !KGlobalSettings::singleClick() &&
 416                            (event->button() & Qt::LeftButton) &&
 417                            index >= 0 && index < m_model->count();
 418     if (emitItemClicked) {
 419         emit itemClicked(index, event->button());
 420     }
 421     return false;
 422 }
 423
 424 bool KItemListController::dragEnterEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 425 {
 426     Q_UNUSED(event);
 427     Q_UNUSED(transform);
 428     return false;
 429 }
 430
 431 bool KItemListController::dragLeaveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 432 {
 433     Q_UNUSED(event);
 434     Q_UNUSED(transform);
 435     return false;
 436 }
 437
 438 bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 439 {
 440     Q_UNUSED(event);
 441     Q_UNUSED(transform);
 442     return false;
 443 }
 444
 445 bool KItemListController::dropEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 446 {
 447     Q_UNUSED(event);
 448     Q_UNUSED(transform);
 449
 450     m_dragging = false;
 451     return false;
 452 }
 453
 454 bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 455 {
 456     Q_UNUSED(event);
 457     Q_UNUSED(transform);
 458     return false;
 459 }
 460
 461 bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 462 {
 463     // The implementation assumes that only one item can get hovered no matter
 464     // whether they overlap or not.
 465
 466     Q_UNUSED(transform);
 467     if (!m_model || !m_view) {
 468         return false;
 469     }
 470
 471     // Search the previously hovered item that might get unhovered
 472     KItemListWidget* unhoveredWidget = 0;
 473     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 474         if (widget->isHovered()) {
 475             unhoveredWidget = widget;
 476             break;
 477         }
 478     }
 479
 480     // Search the currently hovered item
 481     KItemListWidget* hoveredWidget = 0;
 482     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 483         const QPointF mappedPos = widget->mapFromItem(m_view, event->pos());
 484
 485         const bool hovered = widget->contains(mappedPos) &&
 486                              !widget->expansionToggleRect().contains(mappedPos) &&
 487                              !widget->selectionToggleRect().contains(mappedPos);
 488         if (hovered) {
 489             hoveredWidget = widget;
 490             break;
 491         }
 492     }
 493
 494     if (unhoveredWidget != hoveredWidget) {
 495         if (unhoveredWidget) {
 496             unhoveredWidget->setHovered(false);
 497             emit itemUnhovered(unhoveredWidget->index());
 498         }
 499
 500         if (hoveredWidget) {
 501             hoveredWidget->setHovered(true);
 502             emit itemHovered(hoveredWidget->index());
 503         }
 504     }
 505
 506     return false;
 507 }
 508
 509 bool KItemListController::hoverLeaveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 510 {
 511     Q_UNUSED(event);
 512     Q_UNUSED(transform);
 513
 514     if (!m_model || !m_view) {
 515         return false;
 516     }
 517
 518     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 519         if (widget->isHovered()) {
 520             widget->setHovered(false);
 521             emit itemUnhovered(widget->index());
 522         }
 523     }
 524     return false;
 525 }
 526
 527 bool KItemListController::wheelEvent(QGraphicsSceneWheelEvent* event, const QTransform& transform)
 528 {
 529     Q_UNUSED(event);
 530     Q_UNUSED(transform);
 531     return false;
 532 }
 533
 534 bool KItemListController::resizeEvent(QGraphicsSceneResizeEvent* event, const QTransform& transform)
 535 {
 536     Q_UNUSED(event);
 537     Q_UNUSED(transform);
 538     return false;
 539 }
 540
 541 bool KItemListController::processEvent(QEvent* event, const QTransform& transform)
 542 {
 543     if (!event) {
 544         return false;
 545     }
 546
 547     switch (event->type()) {
 548     case QEvent::KeyPress:
 549         return keyPressEvent(static_cast<QKeyEvent*>(event));
 550     case QEvent::InputMethod:
 551         return inputMethodEvent(static_cast<QInputMethodEvent*>(event));
 552     case QEvent::GraphicsSceneMousePress:
 553         return mousePressEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 554     case QEvent::GraphicsSceneMouseMove:
 555         return mouseMoveEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 556     case QEvent::GraphicsSceneMouseRelease:
 557         return mouseReleaseEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 558     case QEvent::GraphicsSceneMouseDoubleClick:
 559         return mouseDoubleClickEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 560     case QEvent::GraphicsSceneWheel:
 561          return wheelEvent(static_cast<QGraphicsSceneWheelEvent*>(event), QTransform());
 562     case QEvent::GraphicsSceneDragEnter:
 563         return dragEnterEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 564     case QEvent::GraphicsSceneDragLeave:
 565         return dragLeaveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 566     case QEvent::GraphicsSceneDragMove:
 567         return dragMoveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 568     case QEvent::GraphicsSceneDrop:
 569         return dropEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 570     case QEvent::GraphicsSceneHoverEnter:
 571         return hoverEnterEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
 572     case QEvent::GraphicsSceneHoverMove:
 573         return hoverMoveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
 574     case QEvent::GraphicsSceneHoverLeave:
 575         return hoverLeaveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
 576     case QEvent::GraphicsSceneResize:
 577         return resizeEvent(static_cast<QGraphicsSceneResizeEvent*>(event), transform);
 578     default:
 579         break;
 580     }
 581
 582     return false;
 583 }
 584
 585 void KItemListController::slotViewOffsetChanged(qreal current, qreal previous)
 586 {
 587     if (!m_view) {
 588         return;
 589     }
 590
 591     KItemListRubberBand* rubberBand = m_view->rubberBand();
 592     if (rubberBand->isActive()) {
 593         const qreal diff = current - previous;
 594         // TODO: Ideally just QCursor::pos() should be used as
 595         // new end-position but it seems there is no easy way
 596         // to have something like QWidget::mapFromGlobal() for QGraphicsWidget
 597         // (... or I just missed an easy way to do the mapping)
 598         QPointF endPos = rubberBand->endPosition();
 599         if (m_view->scrollOrientation() == Qt::Vertical) {
 600             endPos.ry() += diff;
 601         } else {
 602             endPos.rx() += diff;
 603         }
 604
 605         rubberBand->setEndPosition(endPos);
 606     }
 607 }
 608
 609 void KItemListController::slotRubberBandChanged()
 610 {
 611     if (!m_view || !m_model || m_model->count() <= 0) {
 612         return;
 613     }
 614
 615     const KItemListRubberBand* rubberBand = m_view->rubberBand();
 616     const QPointF startPos = rubberBand->startPosition();
 617     const QPointF endPos = rubberBand->endPosition();
 618     QRectF rubberBandRect = QRectF(startPos, endPos).normalized();
 619
 620     const bool scrollVertical = (m_view->scrollOrientation() == Qt::Vertical);
 621     if (scrollVertical) {
 622         rubberBandRect.translate(0, -m_view->offset());
 623     } else {
 624         rubberBandRect.translate(-m_view->offset(), 0);
 625     }
 626
 627     if (!m_oldSelection.isEmpty()) {
 628         // Clear the old selection that was available before the rubberband has
 629         // been activated in case if no Shift- or Control-key are pressed
 630         const bool shiftOrControlPressed = QApplication::keyboardModifiers() & Qt::ShiftModifier ||
 631                                            QApplication::keyboardModifiers() & Qt::ControlModifier;
 632         if (!shiftOrControlPressed) {
 633             m_oldSelection.clear();
 634         }
 635     }
 636
 637     QSet<int> selectedItems;
 638
 639     // Select all visible items that intersect with the rubberband
 640     foreach (const KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 641         const int index = widget->index();
 642
 643         const QRectF widgetRect = m_view->itemBoundingRect(index);
 644         if (widgetRect.intersects(rubberBandRect)) {
 645             const QRectF iconRect = widget->iconBoundingRect().translated(widgetRect.topLeft());
 646             const QRectF textRect = widget->textBoundingRect().translated(widgetRect.topLeft());
 647             if (iconRect.intersects(rubberBandRect) || textRect.intersects(rubberBandRect)) {
 648                 selectedItems.insert(index);
 649             }
 650         }
 651     }
 652
 653     // Select all invisible items that intersect with the rubberband. Instead of
 654     // iterating all items only the area which might be touched by the rubberband
 655     // will be checked.
 656     const bool increaseIndex = scrollVertical ?
 657                                startPos.y() > endPos.y(): startPos.x() > endPos.x();
 658
 659     int index = increaseIndex ? m_view->lastVisibleIndex() + 1 : m_view->firstVisibleIndex() - 1;
 660     bool selectionFinished = false;
 661     do {
 662         const QRectF widgetRect = m_view->itemBoundingRect(index);
 663         if (widgetRect.intersects(rubberBandRect)) {
 664             selectedItems.insert(index);
 665         }
 666
 667         if (increaseIndex) {
 668             ++index;
 669             selectionFinished = (index >= m_model->count()) ||
 670                                 ( scrollVertical && widgetRect.top()  > rubberBandRect.bottom()) ||
 671                                 (!scrollVertical && widgetRect.left() > rubberBandRect.right());
 672         } else {
 673             --index;
 674             selectionFinished = (index < 0) ||
 675                                 ( scrollVertical && widgetRect.bottom() < rubberBandRect.top()) ||
 676                                 (!scrollVertical && widgetRect.right()  < rubberBandRect.left());
 677         }
 678     } while (!selectionFinished);
 679
 680     m_selectionManager->setSelectedItems(selectedItems + m_oldSelection);
 681 }
 682
 683 bool KItemListController::startDragging()
 684 {
 685     if (!m_view || !m_model) {
 686         return false;
 687     }
 688
 689     const QSet<int> selectedItems = m_selectionManager->selectedItems();
 690     QMimeData* data = m_model->createMimeData(selectedItems);
 691     if (!data) {
 692         return false;
 693     }
 694
 695     // The created drag object will be owned and deleted
 696     // by QApplication::activeWindow().
 697     QDrag* drag = new QDrag(QApplication::activeWindow());
 698     drag->setMimeData(data);
 699
 700     const QPixmap pixmap = m_view->createDragPixmap(selectedItems);
 701     drag->setPixmap(pixmap);
 702
 703     drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction, Qt::IgnoreAction);
 704     return true;
 705 }
 706
 707 #include "kitemlistcontroller.moc"