X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/blobdiff_plain/afca8efa2601d9566c8d34d7b67dfb5abc729956..3e9d31d293b0b42b38e07a7a30a6199cc278ade1:/src/kitemviews/kitemlistcontroller.cpp diff --git a/src/kitemviews/kitemlistcontroller.cpp b/src/kitemviews/kitemlistcontroller.cpp index 207535ce1..026c245f5 100644 --- a/src/kitemviews/kitemlistcontroller.cpp +++ b/src/kitemviews/kitemlistcontroller.cpp @@ -30,15 +30,18 @@ #include #include #include +#include #include +#include #include +#include #include #include KItemListController::KItemListController(QObject* parent) : QObject(parent), - m_dragging(false), + m_selectionTogglePressed(false), m_selectionBehavior(NoSelection), m_model(0), m_view(0), @@ -46,9 +49,18 @@ KItemListController::KItemListController(QObject* parent) : m_keyboardManager(new KItemListKeyboardSearchManager(this)), m_pressedIndex(-1), m_pressedMousePos(), - m_oldSelection() + m_autoActivationTimer(0), + m_oldSelection(), + m_keyboardAnchorIndex(-1), + m_keyboardAnchorPos(0) { - connect(m_keyboardManager, SIGNAL(requestItemActivation(QString,bool)), this, SLOT(slotKeyboardActivationRequested(QString,bool))); + connect(m_keyboardManager, SIGNAL(changeCurrentItem(QString,bool)), + this, SLOT(slotChangeCurrentItem(QString,bool))); + + m_autoActivationTimer = new QTimer(this); + m_autoActivationTimer->setSingleShot(true); + m_autoActivationTimer->setInterval(-1); + connect(m_autoActivationTimer, SIGNAL(timeout()), this, SLOT(slotAutoActivationTimeout())); } KItemListController::~KItemListController() @@ -91,7 +103,7 @@ void KItemListController::setView(KItemListView* view) KItemListView* oldView = m_view; if (oldView) { - disconnect(oldView, SIGNAL(offsetChanged(qreal,qreal)), this, SLOT(slotViewOffsetChanged(qreal,qreal))); + disconnect(oldView, SIGNAL(scrollOffsetChanged(qreal,qreal)), this, SLOT(slotViewScrollOffsetChanged(qreal,qreal))); } m_view = view; @@ -99,7 +111,7 @@ void KItemListController::setView(KItemListView* view) if (m_view) { m_view->setController(this); m_view->setModel(m_model); - connect(m_view, SIGNAL(offsetChanged(qreal,qreal)), this, SLOT(slotViewOffsetChanged(qreal,qreal))); + connect(m_view, SIGNAL(scrollOffsetChanged(qreal,qreal)), this, SLOT(slotViewScrollOffsetChanged(qreal,qreal))); } emit viewChanged(m_view, oldView); @@ -120,6 +132,16 @@ KItemListController::SelectionBehavior KItemListController::selectionBehavior() return m_selectionBehavior; } +void KItemListController::setAutoActivationDelay(int delay) +{ + m_autoActivationTimer->setInterval(delay); +} + +int KItemListController::autoActivationDelay() const +{ + return m_autoActivationTimer->interval(); +} + bool KItemListController::showEvent(QShowEvent* event) { Q_UNUSED(event); @@ -134,17 +156,30 @@ bool KItemListController::hideEvent(QHideEvent* event) bool KItemListController::keyPressEvent(QKeyEvent* event) { + int index = m_selectionManager->currentItem(); + int key = event->key(); + + // Handle the expanding/collapsing of items + if (m_view->supportsItemExpanding() && m_model->isExpandable(index)) { + if (key == Qt::Key_Right) { + if (m_model->setExpanded(index, true)) { + return true; + } + } else if (key == Qt::Key_Left) { + if (m_model->setExpanded(index, false)) { + return true; + } + } + } + const bool shiftPressed = event->modifiers() & Qt::ShiftModifier; const bool controlPressed = event->modifiers() & Qt::ControlModifier; const bool shiftOrControlPressed = shiftPressed || controlPressed; - int index = m_selectionManager->currentItem(); const int itemCount = m_model->count(); - const int itemsPerRow = m_view->itemsPerOffset(); // For horizontal scroll orientation, transform // the arrow keys to simplify the event handling. - int key = event->key(); if (m_view->scrollOrientation() == Qt::Horizontal) { switch (key) { case Qt::Key_Up: key = Qt::Key_Left; break; @@ -154,6 +189,16 @@ bool KItemListController::keyPressEvent(QKeyEvent* event) default: break; } } + + const bool selectSingleItem = itemCount == 1 && + (key == Qt::Key_Home || key == Qt::Key_End || + key == Qt::Key_Up || key == Qt::Key_Down || + key == Qt::Key_Left || key == Qt::Key_Right); + if (selectSingleItem) { + const int current = m_selectionManager->currentItem(); + m_selectionManager->setSelected(current); + return true; + } switch (key) { case Qt::Key_Home: @@ -166,47 +211,76 @@ bool KItemListController::keyPressEvent(QKeyEvent* event) case Qt::Key_Left: if (index > 0) { - index--; + --index; + m_keyboardAnchorIndex = index; + m_keyboardAnchorPos = keyboardAnchorPos(index); } break; case Qt::Key_Right: if (index < itemCount - 1) { - index++; + ++index; + m_keyboardAnchorIndex = index; + m_keyboardAnchorPos = keyboardAnchorPos(index); } break; case Qt::Key_Up: - if (index >= itemsPerRow) { - index -= itemsPerRow; - } + updateKeyboardAnchor(); + index = previousRowIndex(); break; case Qt::Key_Down: - if (index + itemsPerRow < itemCount) { - // We are not in the last row yet. - index += itemsPerRow; - } - else { - // We are either in the last row already, or we are in the second-last row, - // and there is no item below the current item. - // In the latter case, we jump to the very last item. - const int currentColumn = index % itemsPerRow; - const int lastItemColumn = (itemCount - 1) % itemsPerRow; - const bool inLastRow = currentColumn < lastItemColumn; - if (!inLastRow) { - index = itemCount - 1; - } + updateKeyboardAnchor(); + index = nextRowIndex(); + break; + + case Qt::Key_Enter: + case Qt::Key_Return: { + const QSet selectedItems = m_selectionManager->selectedItems(); + if (selectedItems.count() >= 2) { + emit itemsActivated(selectedItems); + } else if (selectedItems.count() == 1) { + emit itemActivated(selectedItems.toList().first()); + } else { + emit itemActivated(index); } break; + } case Qt::Key_Space: if (controlPressed) { m_selectionManager->endAnchoredSelection(); m_selectionManager->setSelected(index, 1, KItemListSelectionManager::Toggle); m_selectionManager->beginAnchoredSelection(index); - break; + } else { + const int current = m_selectionManager->currentItem(); + m_selectionManager->setSelected(current); } + break; + + case Qt::Key_Menu: { + // Emit the signal itemContextMenuRequested() in case if at least one + // item is selected. Otherwise the signal viewContextMenuRequested() will be emitted. + const QSet selectedItems = m_selectionManager->selectedItems(); + int index = -1; + if (selectedItems.count() >= 2) { + const int currentItemIndex = m_selectionManager->currentItem(); + index = selectedItems.contains(currentItemIndex) + ? currentItemIndex : selectedItems.toList().first(); + } else if (selectedItems.count() == 1) { + index = selectedItems.toList().first(); + } + + if (index >= 0) { + const QRectF contextRect = m_view->itemContextRect(index); + const QPointF pos(m_view->scene()->views().first()->mapToGlobal(contextRect.bottomRight().toPoint())); + emit itemContextMenuRequested(index, pos); + } else { + emit viewContextMenuRequested(QCursor::pos()); + } + break; + } default: m_keyboardManager->addKeys(event->text()); @@ -228,21 +302,22 @@ bool KItemListController::keyPressEvent(QKeyEvent* event) if (!shiftPressed) { m_selectionManager->beginAnchoredSelection(index); } + + m_view->scrollToItem(index); } return true; } -void KItemListController::slotKeyboardActivationRequested(const QString& text, bool searchFromNextItem) +void KItemListController::slotChangeCurrentItem(const QString& text, bool searchFromNextItem) { - if (!m_model) { + if (!m_model || m_model->count() == 0) { return; } const int currentIndex = m_selectionManager->currentItem(); int index; if (searchFromNextItem) { - index = m_model->indexForKeyboardSearch(text, (currentIndex + 1) % m_model->count()); - } - else { + index = m_model->indexForKeyboardSearch(text, (currentIndex + 1) % m_model->count()); + } else { index = m_model->indexForKeyboardSearch(text, currentIndex); } if (index >= 0) { @@ -250,6 +325,28 @@ void KItemListController::slotKeyboardActivationRequested(const QString& text, b m_selectionManager->clearSelection(); m_selectionManager->setSelected(index, 1); m_selectionManager->beginAnchoredSelection(index); + m_view->scrollToItem(index); + } +} + +void KItemListController::slotAutoActivationTimeout() +{ + if (!m_model || !m_view) { + return; + } + + const int index = m_autoActivationTimer->property("index").toInt(); + if (index < 0 || index >= m_model->count()) { + return; + } + + if (m_model->supportsDropping(index)) { + if (m_view->supportsItemExpanding() && m_model->isExpandable(index)) { + const bool expanded = m_model->isExpanded(index); + m_model->setExpanded(index, !expanded); + } else { + emit itemActivated(index); + } } } @@ -265,19 +362,43 @@ bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const return false; } - m_dragging = false; m_pressedMousePos = transform.map(event->pos()); m_pressedIndex = m_view->itemAt(m_pressedMousePos); + if (m_pressedIndex >= 0) { + emit itemPressed(m_pressedIndex, event->button()); + } if (m_view->isAboveExpansionToggle(m_pressedIndex, m_pressedMousePos)) { m_selectionManager->setCurrentItem(m_pressedIndex); return true; } + m_selectionTogglePressed = m_view->isAboveSelectionToggle(m_pressedIndex, m_pressedMousePos); + if (m_selectionTogglePressed) { + m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle); + // The previous anchored selection has been finished already in + // KItemListSelectionManager::setSelected(). We can safely change + // the current item and start a new anchored selection now. + m_selectionManager->setCurrentItem(m_pressedIndex); + m_selectionManager->beginAnchoredSelection(m_pressedIndex); + return true; + } + const bool shiftPressed = event->modifiers() & Qt::ShiftModifier; const bool controlPressed = event->modifiers() & Qt::ControlModifier; - if (m_selectionBehavior == SingleSelection) { + // The previous selection is cleared if either + // 1. The selection mode is SingleSelection, or + // 2. the selection mode is MultiSelection, and *none* of the following conditions are met: + // a) Shift or Control are pressed. + // b) The clicked item is selected already. In that case, the user might want to: + // - start dragging multiple items, or + // - open the context menu and perform an action for all selected items. + const bool shiftOrControlPressed = shiftPressed || controlPressed; + const bool pressedItemAlreadySelected = m_pressedIndex >= 0 && m_selectionManager->isSelected(m_pressedIndex); + const bool clearSelection = m_selectionBehavior == SingleSelection || + (!shiftOrControlPressed && !pressedItemAlreadySelected); + if (clearSelection) { m_selectionManager->clearSelection(); } @@ -313,22 +434,38 @@ bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const break; } + if (event->buttons() & Qt::RightButton) { + emit itemContextMenuRequested(m_pressedIndex, event->screenPos()); + } + return true; - } else { - KItemListRubberBand* rubberBand = m_view->rubberBand(); + } + + if (event->buttons() & Qt::RightButton) { + const QRectF headerBounds = m_view->headerBoundaries(); + if (headerBounds.contains(event->pos())) { + emit headerContextMenuRequested(event->screenPos()); + } else { + emit viewContextMenuRequested(event->screenPos()); + } + return true; + } + + if (m_selectionBehavior == MultiSelection) { QPointF startPos = m_pressedMousePos; if (m_view->scrollOrientation() == Qt::Vertical) { - startPos.ry() += m_view->offset(); + startPos.ry() += m_view->scrollOffset(); if (m_view->itemSize().width() < 0) { // Use a special rubberband for views that have only one column and // expand the rubberband to use the whole width of the view. startPos.setX(0); } } else { - startPos.rx() += m_view->offset(); + startPos.rx() += m_view->scrollOffset(); } m_oldSelection = m_selectionManager->selectedItems(); + KItemListRubberBand* rubberBand = m_view->rubberBand(); rubberBand->setStartPosition(startPos); rubberBand->setEndPosition(startPos); rubberBand->setActive(true); @@ -347,28 +484,41 @@ bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent* event, const if (m_pressedIndex >= 0) { // Check whether a dragging should be started - if (!m_dragging && (event->buttons() & Qt::LeftButton)) { + if (event->buttons() & Qt::LeftButton) { const QPointF pos = transform.map(event->pos()); - const qreal minDragDiff = 4; - const bool hasMinDragDiff = qAbs(pos.x() - m_pressedMousePos.x()) >= minDragDiff || - qAbs(pos.y() - m_pressedMousePos.y()) >= minDragDiff; - if (hasMinDragDiff && startDragging()) { - m_dragging = true; + if ((pos - m_pressedMousePos).manhattanLength() >= QApplication::startDragDistance()) { + if (!m_selectionManager->isSelected(m_pressedIndex)) { + // Always assure that the dragged item gets selected. Usually this is already + // done on the mouse-press event, but when using the selection-toggle on a + // selected item the dragged item is not selected yet. + m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle); + } + startDragging(); } } } else { KItemListRubberBand* rubberBand = m_view->rubberBand(); if (rubberBand->isActive()) { QPointF endPos = transform.map(event->pos()); + + // Update the current item. + const int newCurrent = m_view->itemAt(endPos); + if (newCurrent >= 0) { + // It's expected that the new current index is also the new anchor (bug 163451). + m_selectionManager->endAnchoredSelection(); + m_selectionManager->setCurrentItem(newCurrent); + m_selectionManager->beginAnchoredSelection(newCurrent); + } + if (m_view->scrollOrientation() == Qt::Vertical) { - endPos.ry() += m_view->offset(); + endPos.ry() += m_view->scrollOffset(); if (m_view->itemSize().width() < 0) { // Use a special rubberband for views that have only one column and // expand the rubberband to use the whole width of the view. endPos.setX(m_view->size().width()); } } else { - endPos.rx() += m_view->offset(); + endPos.rx() += m_view->scrollOffset(); } rubberBand->setEndPosition(endPos); } @@ -383,21 +533,31 @@ bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, con return false; } + if (m_pressedIndex >= 0) { + emit itemReleased(m_pressedIndex, event->button()); + } + + const bool isAboveSelectionToggle = m_view->isAboveSelectionToggle(m_pressedIndex, m_pressedMousePos); + if (isAboveSelectionToggle) { + m_selectionTogglePressed = false; + return true; + } + + if (!isAboveSelectionToggle && m_selectionTogglePressed) { + m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle); + m_selectionTogglePressed = false; + return true; + } + const bool shiftOrControlPressed = event->modifiers() & Qt::ShiftModifier || event->modifiers() & Qt::ControlModifier; - bool clearSelection = !shiftOrControlPressed && !m_dragging && !(event->button() == Qt::RightButton); - KItemListRubberBand* rubberBand = m_view->rubberBand(); if (rubberBand->isActive()) { disconnect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged())); rubberBand->setActive(false); m_oldSelection.clear(); m_view->setAutoScroll(false); - - if (rubberBand->startPosition() != rubberBand->endPosition()) { - clearSelection = false; - } } const QPointF pos = transform.map(event->pos()); @@ -406,29 +566,28 @@ bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, con if (index >= 0 && index == m_pressedIndex) { // The release event is done above the same item as the press event - if (clearSelection) { - // Clear the previous selection but reselect the current index - m_selectionManager->setSelectedItems(QSet() << index); - } - - bool emitItemClicked = true; if (event->button() & Qt::LeftButton) { + bool emitItemActivated = true; if (m_view->isAboveExpansionToggle(index, pos)) { + const bool expanded = m_model->isExpanded(index); + m_model->setExpanded(index, !expanded); + emit itemExpansionToggleClicked(index); - emitItemClicked = false; - } else if (shiftOrControlPressed || !KGlobalSettings::singleClick()) { - emitItemClicked = false; + emitItemActivated = false; + } else if (shiftOrControlPressed) { + // The mouse click should only update the selection, not trigger the item + emitItemActivated = false; + } else if (!KGlobalSettings::singleClick()) { + emitItemActivated = false; } + if (emitItemActivated) { + emit itemActivated(index); + } + } else if (event->button() & Qt::MidButton) { + emit itemMiddleClicked(index); } - - if (emitItemClicked) { - emit itemClicked(index, event->button()); - } - } else if (clearSelection) { - m_selectionManager->clearSelection(); } - m_dragging = false; m_pressedMousePos = QPointF(); m_pressedIndex = -1; return false; @@ -439,11 +598,11 @@ bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event, const QPointF pos = transform.map(event->pos()); const int index = m_view->itemAt(pos); - bool emitItemClicked = !KGlobalSettings::singleClick() && - (event->button() & Qt::LeftButton) && - index >= 0 && index < m_model->count(); - if (emitItemClicked) { - emit itemClicked(index, event->button()); + bool emitItemActivated = !KGlobalSettings::singleClick() && + (event->button() & Qt::LeftButton) && + index >= 0 && index < m_model->count(); + if (emitItemActivated) { + emit itemActivated(index); } return false; } @@ -464,18 +623,55 @@ bool KItemListController::dragLeaveEvent(QGraphicsSceneDragDropEvent* event, con bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform) { - Q_UNUSED(event); Q_UNUSED(transform); + if (!m_model || !m_view) { + return false; + } + + KItemListWidget* oldHoveredWidget = hoveredWidget(); + + const QPointF pos = transform.map(event->pos()); + KItemListWidget* newHoveredWidget = widgetForPos(pos); + + if (oldHoveredWidget != newHoveredWidget) { + m_autoActivationTimer->stop(); + + if (oldHoveredWidget) { + oldHoveredWidget->setHovered(false); + emit itemUnhovered(oldHoveredWidget->index()); + } + + if (newHoveredWidget) { + const int index = newHoveredWidget->index(); + if (m_model->supportsDropping(index)) { + newHoveredWidget->setHovered(true); + } + emit itemHovered(index); + + if (m_autoActivationTimer->interval() >= 0) { + m_autoActivationTimer->setProperty("index", index); + m_autoActivationTimer->start(); + } + } + } + return false; } bool KItemListController::dropEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform) { - Q_UNUSED(event); - Q_UNUSED(transform); + Q_UNUSED(transform) + if (!m_view) { + return false; + } - m_dragging = false; - return false; + m_autoActivationTimer->stop(); + + const QPointF pos = transform.map(event->pos()); + const int index = m_view->itemAt(pos); + emit itemDropEvent(index, event); + + return true; } bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform) @@ -487,46 +683,24 @@ bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent* event, const bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform) { - // The implementation assumes that only one item can get hovered no matter - // whether they overlap or not. - Q_UNUSED(transform); if (!m_model || !m_view) { return false; } - // Search the previously hovered item that might get unhovered - KItemListWidget* unhoveredWidget = 0; - foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) { - if (widget->isHovered()) { - unhoveredWidget = widget; - break; - } - } - - // Search the currently hovered item - KItemListWidget* hoveredWidget = 0; - foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) { - const QPointF mappedPos = widget->mapFromItem(m_view, event->pos()); - - const bool hovered = widget->contains(mappedPos) && - !widget->expansionToggleRect().contains(mappedPos) && - !widget->selectionToggleRect().contains(mappedPos); - if (hovered) { - hoveredWidget = widget; - break; - } - } + KItemListWidget* oldHoveredWidget = hoveredWidget(); + const QPointF pos = transform.map(event->pos()); + KItemListWidget* newHoveredWidget = widgetForPos(pos); - if (unhoveredWidget != hoveredWidget) { - if (unhoveredWidget) { - unhoveredWidget->setHovered(false); - emit itemUnhovered(unhoveredWidget->index()); + if (oldHoveredWidget != newHoveredWidget) { + if (oldHoveredWidget) { + oldHoveredWidget->setHovered(false); + emit itemUnhovered(oldHoveredWidget->index()); } - if (hoveredWidget) { - hoveredWidget->setHovered(true); - emit itemHovered(hoveredWidget->index()); + if (newHoveredWidget) { + newHoveredWidget->setHovered(true); + emit itemHovered(newHoveredWidget->index()); } } @@ -609,7 +783,7 @@ bool KItemListController::processEvent(QEvent* event, const QTransform& transfor return false; } -void KItemListController::slotViewOffsetChanged(qreal current, qreal previous) +void KItemListController::slotViewScrollOffsetChanged(qreal current, qreal previous) { if (!m_view) { return; @@ -646,9 +820,9 @@ void KItemListController::slotRubberBandChanged() const bool scrollVertical = (m_view->scrollOrientation() == Qt::Vertical); if (scrollVertical) { - rubberBandRect.translate(0, -m_view->offset()); + rubberBandRect.translate(0, -m_view->scrollOffset()); } else { - rubberBandRect.translate(-m_view->offset(), 0); + rubberBandRect.translate(-m_view->scrollOffset(), 0); } if (!m_oldSelection.isEmpty()) { @@ -667,10 +841,10 @@ void KItemListController::slotRubberBandChanged() foreach (const KItemListWidget* widget, m_view->visibleItemListWidgets()) { const int index = widget->index(); - const QRectF widgetRect = m_view->itemBoundingRect(index); + const QRectF widgetRect = m_view->itemRect(index); if (widgetRect.intersects(rubberBandRect)) { - const QRectF iconRect = widget->iconBoundingRect().translated(widgetRect.topLeft()); - const QRectF textRect = widget->textBoundingRect().translated(widgetRect.topLeft()); + const QRectF iconRect = widget->iconRect().translated(widgetRect.topLeft()); + const QRectF textRect = widget->textRect().translated(widgetRect.topLeft()); if (iconRect.intersects(rubberBandRect) || textRect.intersects(rubberBandRect)) { selectedItems.insert(index); } @@ -686,7 +860,7 @@ void KItemListController::slotRubberBandChanged() int index = increaseIndex ? m_view->lastVisibleIndex() + 1 : m_view->firstVisibleIndex() - 1; bool selectionFinished = false; do { - const QRectF widgetRect = m_view->itemBoundingRect(index); + const QRectF widgetRect = m_view->itemRect(index); if (widgetRect.intersects(rubberBandRect)) { selectedItems.insert(index); } @@ -716,16 +890,20 @@ void KItemListController::slotRubberBandChanged() } } -bool KItemListController::startDragging() +void KItemListController::startDragging() { if (!m_view || !m_model) { - return false; + return; } const QSet selectedItems = m_selectionManager->selectedItems(); + if (selectedItems.isEmpty()) { + return; + } + QMimeData* data = m_model->createMimeData(selectedItems); if (!data) { - return false; + return; } // The created drag object will be owned and deleted @@ -736,8 +914,130 @@ bool KItemListController::startDragging() const QPixmap pixmap = m_view->createDragPixmap(selectedItems); drag->setPixmap(pixmap); - drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction, Qt::IgnoreAction); - return true; + drag->exec(Qt::CopyAction); +} + +KItemListWidget* KItemListController::hoveredWidget() const +{ + Q_ASSERT(m_view); + + foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) { + if (widget->isHovered()) { + return widget; + } + } + + return 0; +} + +KItemListWidget* KItemListController::widgetForPos(const QPointF& pos) const +{ + Q_ASSERT(m_view); + + foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) { + const QPointF mappedPos = widget->mapFromItem(m_view, pos); + + const bool hovered = widget->contains(mappedPos) && + !widget->expansionToggleRect().contains(mappedPos); + if (hovered) { + return widget; + } + } + + return 0; +} + +void KItemListController::updateKeyboardAnchor() +{ + const bool validAnchor = m_keyboardAnchorIndex >= 0 && + m_keyboardAnchorIndex < m_model->count() && + keyboardAnchorPos(m_keyboardAnchorIndex) == m_keyboardAnchorPos; + if (!validAnchor) { + const int index = m_selectionManager->currentItem(); + m_keyboardAnchorIndex = index; + m_keyboardAnchorPos = keyboardAnchorPos(index); + } +} + +int KItemListController::nextRowIndex() const +{ + const int currentIndex = m_selectionManager->currentItem(); + if (m_keyboardAnchorIndex < 0) { + return currentIndex; + } + + const int maxIndex = m_model->count() - 1; + if (currentIndex == maxIndex) { + return currentIndex; + } + + // Calculate the index of the last column inside the row of the current index + int lastColumnIndex = currentIndex; + while (keyboardAnchorPos(lastColumnIndex + 1) > keyboardAnchorPos(lastColumnIndex)) { + ++lastColumnIndex; + if (lastColumnIndex >= maxIndex) { + return currentIndex; + } + } + + // Based on the last column index go to the next row and calculate the nearest index + // that is below the current index + int nextRowIndex = lastColumnIndex + 1; + int searchIndex = nextRowIndex; + qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(nextRowIndex)); + while (searchIndex < maxIndex && keyboardAnchorPos(searchIndex + 1) > keyboardAnchorPos(searchIndex)) { + ++searchIndex; + const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex)); + if (searchDiff < minDiff) { + minDiff = searchDiff; + nextRowIndex = searchIndex; + } + } + + return nextRowIndex; +} + +int KItemListController::previousRowIndex() const +{ + const int currentIndex = m_selectionManager->currentItem(); + if (m_keyboardAnchorIndex < 0 || currentIndex == 0) { + return currentIndex; + } + + // Calculate the index of the first column inside the row of the current index + int firstColumnIndex = currentIndex; + while (keyboardAnchorPos(firstColumnIndex - 1) < keyboardAnchorPos(firstColumnIndex)) { + --firstColumnIndex; + if (firstColumnIndex <= 0) { + return currentIndex; + } + } + + // Based on the first column index go to the previous row and calculate the nearest index + // that is above the current index + int previousRowIndex = firstColumnIndex - 1; + int searchIndex = previousRowIndex; + qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(previousRowIndex)); + while (searchIndex > 0 && keyboardAnchorPos(searchIndex - 1) < keyboardAnchorPos(searchIndex)) { + --searchIndex; + const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex)); + if (searchDiff < minDiff) { + minDiff = searchDiff; + previousRowIndex = searchIndex; + } + } + + return previousRowIndex; +} + +qreal KItemListController::keyboardAnchorPos(int index) const +{ + const QRectF itemRect = m_view->itemRect(index); + if (!itemRect.isEmpty()) { + return (m_view->scrollOrientation() == Qt::Vertical) ? itemRect.x() : itemRect.y(); + } + + return 0; } #include "kitemlistcontroller.moc"