/***************************************************************************
* Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com> *
+ * Copyright (C) 2012 by Frank Reininghaus <frank78ac@googlemail.com> *
* *
* Based on the Itemviews NG project from Trolltech Labs: *
* http://qt.gitorious.org/qt-labs/itemviews-ng *
#include "kitemlistcontroller.h"
+#include <KGlobalSettings>
+#include <KDebug>
+
#include "kitemlistview.h"
#include "kitemlistselectionmanager.h"
+#include "private/kitemlistrubberband.h"
+#include "private/kitemlistkeyboardsearchmanager.h"
+
+#include <QApplication>
+#include <QDrag>
#include <QEvent>
+#include <QGraphicsScene>
#include <QGraphicsSceneEvent>
-#include <QTransform>
+#include <QGraphicsView>
+#include <QMimeData>
+#include <QTimer>
-#include <KDebug>
-
-KItemListController::KItemListController(QObject* parent) :
+KItemListController::KItemListController(KItemModelBase* model, KItemListView* view, QObject* parent) :
QObject(parent),
+ m_singleClickActivation(KGlobalSettings::singleClick()),
+ m_selectionTogglePressed(false),
+ m_clearSelectionIfItemsAreNotDragged(false),
m_selectionBehavior(NoSelection),
m_model(0),
m_view(0),
m_selectionManager(new KItemListSelectionManager(this)),
- m_pressedIndex(-1)
+ m_keyboardManager(new KItemListKeyboardSearchManager(this)),
+ m_pressedIndex(-1),
+ m_pressedMousePos(),
+ m_autoActivationTimer(0),
+ m_oldSelection(),
+ m_keyboardAnchorIndex(-1),
+ m_keyboardAnchorPos(0)
{
+ connect(m_keyboardManager, SIGNAL(changeCurrentItem(QString,bool)),
+ this, SLOT(slotChangeCurrentItem(QString,bool)));
+ connect(m_selectionManager, SIGNAL(currentChanged(int,int)),
+ m_keyboardManager, SLOT(slotCurrentChanged(int,int)));
+
+ m_autoActivationTimer = new QTimer(this);
+ m_autoActivationTimer->setSingleShot(true);
+ m_autoActivationTimer->setInterval(-1);
+ connect(m_autoActivationTimer, SIGNAL(timeout()), this, SLOT(slotAutoActivationTimeout()));
+
+ setModel(model);
+ setView(view);
}
KItemListController::~KItemListController()
{
+ setView(0);
+ Q_ASSERT(!m_view);
+
+ setModel(0);
+ Q_ASSERT(!m_model);
}
void KItemListController::setModel(KItemModelBase* model)
}
KItemModelBase* oldModel = m_model;
+ if (oldModel) {
+ oldModel->deleteLater();
+ }
+
m_model = model;
+ if (m_model) {
+ m_model->setParent(this);
+ }
if (m_view) {
m_view->setModel(m_model);
}
KItemListView* oldView = m_view;
+ if (oldView) {
+ disconnect(oldView, SIGNAL(scrollOffsetChanged(qreal,qreal)), this, SLOT(slotViewScrollOffsetChanged(qreal,qreal)));
+ oldView->deleteLater();
+ }
+
m_view = view;
if (m_view) {
+ m_view->setParent(this);
m_view->setController(this);
m_view->setModel(m_model);
+ connect(m_view, SIGNAL(scrollOffsetChanged(qreal,qreal)), this, SLOT(slotViewScrollOffsetChanged(qreal,qreal)));
+ updateExtendedSelectionRegion();
}
emit viewChanged(m_view, oldView);
void KItemListController::setSelectionBehavior(SelectionBehavior behavior)
{
m_selectionBehavior = behavior;
+ updateExtendedSelectionRegion();
}
KItemListController::SelectionBehavior KItemListController::selectionBehavior() const
return m_selectionBehavior;
}
+void KItemListController::setAutoActivationDelay(int delay)
+{
+ m_autoActivationTimer->setInterval(delay);
+}
+
+int KItemListController::autoActivationDelay() const
+{
+ return m_autoActivationTimer->interval();
+}
+
+void KItemListController::setSingleClickActivation(bool singleClick)
+{
+ m_singleClickActivation = singleClick;
+}
+
+bool KItemListController::singleClickActivation() const
+{
+ return m_singleClickActivation;
+}
+
bool KItemListController::showEvent(QShowEvent* event)
{
Q_UNUSED(event);
bool KItemListController::keyPressEvent(QKeyEvent* event)
{
- Q_UNUSED(event);
- return false;
+ 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;
+
+ const int itemCount = m_model->count();
+
+ // For horizontal scroll orientation, transform
+ // the arrow keys to simplify the event handling.
+ if (m_view->scrollOrientation() == Qt::Horizontal) {
+ switch (key) {
+ case Qt::Key_Up: key = Qt::Key_Left; break;
+ case Qt::Key_Down: key = Qt::Key_Right; break;
+ case Qt::Key_Left: key = Qt::Key_Up; break;
+ case Qt::Key_Right: key = Qt::Key_Down; break;
+ default: break;
+ }
+ }
+
+ const bool selectSingleItem = m_selectionBehavior != NoSelection &&
+ 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:
+ index = 0;
+ m_keyboardAnchorIndex = index;
+ m_keyboardAnchorPos = keyboardAnchorPos(index);
+ break;
+
+ case Qt::Key_End:
+ index = itemCount - 1;
+ m_keyboardAnchorIndex = index;
+ m_keyboardAnchorPos = keyboardAnchorPos(index);
+ break;
+
+ case Qt::Key_Left:
+ if (index > 0) {
+ const int expandedParentsCount = m_model->expandedParentsCount(index);
+ if (expandedParentsCount == 0) {
+ --index;
+ } else {
+ // Go to the parent of the current item.
+ do {
+ --index;
+ } while (index > 0 && m_model->expandedParentsCount(index) == expandedParentsCount);
+ }
+ m_keyboardAnchorIndex = index;
+ m_keyboardAnchorPos = keyboardAnchorPos(index);
+ }
+ break;
+
+ case Qt::Key_Right:
+ if (index < itemCount - 1) {
+ ++index;
+ m_keyboardAnchorIndex = index;
+ m_keyboardAnchorPos = keyboardAnchorPos(index);
+ }
+ break;
+
+ case Qt::Key_Up:
+ updateKeyboardAnchor();
+ index = previousRowIndex(index);
+ break;
+
+ case Qt::Key_Down:
+ updateKeyboardAnchor();
+ index = nextRowIndex(index);
+ break;
+
+ case Qt::Key_PageUp:
+ if (m_view->scrollOrientation() == Qt::Horizontal) {
+ // The new current index should correspond to the first item in the current column.
+ int newIndex = qMax(index - 1, 0);
+ while (newIndex != index && m_view->itemRect(newIndex).topLeft().y() < m_view->itemRect(index).topLeft().y()) {
+ index = newIndex;
+ newIndex = qMax(index - 1, 0);
+ }
+ m_keyboardAnchorIndex = index;
+ m_keyboardAnchorPos = keyboardAnchorPos(index);
+ } else {
+ const qreal currentItemBottom = m_view->itemRect(index).bottomLeft().y();
+ const qreal height = m_view->geometry().height();
+
+ // The new current item should be the first item in the current
+ // column whose itemRect's top coordinate is larger than targetY.
+ const qreal targetY = currentItemBottom - height;
+
+ updateKeyboardAnchor();
+ int newIndex = previousRowIndex(index);
+ do {
+ index = newIndex;
+ updateKeyboardAnchor();
+ newIndex = previousRowIndex(index);
+ } while (m_view->itemRect(newIndex).topLeft().y() > targetY && newIndex != index);
+ }
+ break;
+
+ case Qt::Key_PageDown:
+ if (m_view->scrollOrientation() == Qt::Horizontal) {
+ // The new current index should correspond to the last item in the current column.
+ int newIndex = qMin(index + 1, m_model->count() - 1);
+ while (newIndex != index && m_view->itemRect(newIndex).topLeft().y() > m_view->itemRect(index).topLeft().y()) {
+ index = newIndex;
+ newIndex = qMin(index + 1, m_model->count() - 1);
+ }
+ m_keyboardAnchorIndex = index;
+ m_keyboardAnchorPos = keyboardAnchorPos(index);
+ } else {
+ const qreal currentItemTop = m_view->itemRect(index).topLeft().y();
+ const qreal height = m_view->geometry().height();
+
+ // The new current item should be the last item in the current
+ // column whose itemRect's bottom coordinate is smaller than targetY.
+ const qreal targetY = currentItemTop + height;
+
+ updateKeyboardAnchor();
+ int newIndex = nextRowIndex(index);
+ do {
+ index = newIndex;
+ updateKeyboardAnchor();
+ newIndex = nextRowIndex(index);
+ } while (m_view->itemRect(newIndex).bottomLeft().y() < targetY && newIndex != index);
+ }
+ break;
+
+ case Qt::Key_Enter:
+ case Qt::Key_Return: {
+ const QSet<int> 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 (m_selectionBehavior == MultiSelection) {
+ if (controlPressed) {
+ m_selectionManager->endAnchoredSelection();
+ m_selectionManager->setSelected(index, 1, KItemListSelectionManager::Toggle);
+ m_selectionManager->beginAnchoredSelection(index);
+ } 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<int> 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;
+ }
+
+ case Qt::Key_Escape:
+ if (m_selectionBehavior != SingleSelection) {
+ m_selectionManager->clearSelection();
+ }
+ m_keyboardManager->cancelSearch();
+ break;
+
+ default:
+ m_keyboardManager->addKeys(event->text());
+ return false;
+ }
+
+ if (m_selectionManager->currentItem() != index) {
+ switch (m_selectionBehavior) {
+ case NoSelection:
+ m_selectionManager->setCurrentItem(index);
+ break;
+
+ case SingleSelection:
+ m_selectionManager->setCurrentItem(index);
+ m_selectionManager->clearSelection();
+ m_selectionManager->setSelected(index, 1);
+ break;
+
+ case MultiSelection:
+ if (controlPressed) {
+ m_selectionManager->endAnchoredSelection();
+ }
+
+ m_selectionManager->setCurrentItem(index);
+
+ if (!shiftOrControlPressed) {
+ m_selectionManager->clearSelection();
+ m_selectionManager->setSelected(index, 1);
+ }
+
+ if (!shiftPressed) {
+ m_selectionManager->beginAnchoredSelection(index);
+ }
+ break;
+ }
+
+ m_view->scrollToItem(index);
+ }
+ return true;
+}
+
+void KItemListController::slotChangeCurrentItem(const QString& text, bool searchFromNextItem)
+{
+ 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);
+ }
+ if (index >= 0) {
+ m_selectionManager->setCurrentItem(index);
+ 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);
+ }
+ }
}
bool KItemListController::inputMethodEvent(QInputMethodEvent* event)
bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
{
- const QPointF pos = transform.map(event->pos());
- m_pressedIndex = m_view->itemAt(pos);
+ if (!m_view) {
+ return false;
+ }
+
+ m_pressedMousePos = transform.map(event->pos());
+ m_pressedIndex = m_view->itemAt(m_pressedMousePos);
+ emit mouseButtonPressed(m_pressedIndex, event->buttons());
+
+ if (m_view->isAboveExpansionToggle(m_pressedIndex, m_pressedMousePos)) {
+ m_selectionManager->endAnchoredSelection();
+ m_selectionManager->setCurrentItem(m_pressedIndex);
+ m_selectionManager->beginAnchoredSelection(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;
+
+ // 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();
+ } else if (pressedItemAlreadySelected && !shiftOrControlPressed && (event->buttons() & Qt::LeftButton)) {
+ // The user might want to start dragging multiple items, but if he clicks the item
+ // in order to trigger it instead, the other selected items must be deselected.
+ // However, we do not know yet what the user is going to do.
+ // -> remember that the user pressed an item which had been selected already and
+ // clear the selection in mouseReleaseEvent(), unless the items are dragged.
+ m_clearSelectionIfItemsAreNotDragged = true;
+ }
+
+ if (!shiftPressed) {
+ // Finish the anchored selection before the current index is changed
+ m_selectionManager->endAnchoredSelection();
+ }
+
+ if (m_pressedIndex >= 0) {
+ m_selectionManager->setCurrentItem(m_pressedIndex);
+
+ switch (m_selectionBehavior) {
+ case NoSelection:
+ break;
+
+ case SingleSelection:
+ m_selectionManager->setSelected(m_pressedIndex);
+ break;
+
+ case MultiSelection:
+ if (controlPressed && !shiftPressed) {
+ m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
+ m_selectionManager->beginAnchoredSelection(m_pressedIndex);
+ } else if (!shiftPressed || !m_selectionManager->isAnchoredSelectionActive()) {
+ // Select the pressed item and start a new anchored selection
+ m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select);
+ m_selectionManager->beginAnchoredSelection(m_pressedIndex);
+ }
+ break;
+
+ default:
+ Q_ASSERT(false);
+ break;
+ }
+
+ if (event->buttons() & Qt::RightButton) {
+ emit itemContextMenuRequested(m_pressedIndex, event->screenPos());
+ }
+
+ return true;
+ }
+
+ 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;
+ }
- m_selectionManager->setCurrentItem(m_pressedIndex);
+ if (m_selectionBehavior == MultiSelection) {
+ QPointF startPos = m_pressedMousePos;
+ if (m_view->scrollOrientation() == Qt::Vertical) {
+ 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->scrollOffset();
+ }
- // The anchor for the current selection is updated except for Shift+LeftButton events
- // (the current selection is continued with the previous anchor in that case).
- if (!(event->buttons() & Qt::LeftButton && event->modifiers() & Qt::ShiftModifier)) {
- m_selectionManager->setAnchorItem(m_pressedIndex);
+ m_oldSelection = m_selectionManager->selectedItems();
+ KItemListRubberBand* rubberBand = m_view->rubberBand();
+ rubberBand->setStartPosition(startPos);
+ rubberBand->setEndPosition(startPos);
+ rubberBand->setActive(true);
+ connect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged()));
+ m_view->setAutoScroll(true);
}
return false;
bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
{
- Q_UNUSED(event);
- Q_UNUSED(transform);
+ if (!m_view) {
+ return false;
+ }
+
+ if (m_pressedIndex >= 0) {
+ // Check whether a dragging should be started
+ if (event->buttons() & Qt::LeftButton) {
+ const QPointF pos = transform.map(event->pos());
+ 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);
+ } else {
+ // A selected item has been clicked to drag all selected items
+ // -> the selection should not be cleared when the mouse button is released.
+ m_clearSelectionIfItemsAreNotDragged = false;
+ }
+
+ 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->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->scrollOffset();
+ }
+ rubberBand->setEndPosition(endPos);
+ }
+ }
+
return false;
}
bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
{
- if (m_view) {
- const QPointF pos = transform.map(event->pos());
- const int index = m_view->itemAt(pos);
- if (index >= 0 && index == m_pressedIndex) {
- bool emitItemClicked = true;
- if (event->button() & Qt::LeftButton) {
- if (m_view->isAboveExpansionToggle(index, pos)) {
- emit itemExpansionToggleClicked(index);
- emitItemClicked = false;
- }
- }
+ if (!m_view) {
+ return false;
+ }
+
+ emit mouseButtonReleased(m_pressedIndex, event->buttons());
+
+ 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;
+
+ 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);
+ }
+
+ const QPointF pos = transform.map(event->pos());
+ const int index = m_view->itemAt(pos);
- if (emitItemClicked) {
- emit itemClicked(index, event->button());
+ if (index >= 0 && index == m_pressedIndex) {
+ // The release event is done above the same item as the press event
+
+ if (m_clearSelectionIfItemsAreNotDragged) {
+ // A selected item has been clicked, but no drag operation has been started
+ // -> clear the rest of the selection.
+ m_selectionManager->clearSelection();
+ m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select);
+ m_selectionManager->beginAnchoredSelection(m_pressedIndex);
+ }
+
+ 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);
+ emitItemActivated = false;
+ } else if (shiftOrControlPressed) {
+ // The mouse click should only update the selection, not trigger the item
+ emitItemActivated = false;
+ } else if (!m_singleClickActivation) {
+ emitItemActivated = false;
+ }
+ if (emitItemActivated) {
+ emit itemActivated(index);
}
+ } else if (event->button() & Qt::MidButton) {
+ emit itemMiddleClicked(index);
}
}
+ m_pressedMousePos = QPointF();
m_pressedIndex = -1;
+ m_clearSelectionIfItemsAreNotDragged = false;
return false;
}
bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
{
- Q_UNUSED(event);
- Q_UNUSED(transform);
+ const QPointF pos = transform.map(event->pos());
+ const int index = m_view->itemAt(pos);
+
+ bool emitItemActivated = !m_singleClickActivation &&
+ (event->button() & Qt::LeftButton) &&
+ index >= 0 && index < m_model->count();
+ if (emitItemActivated) {
+ emit itemActivated(index);
+ }
return false;
}
{
Q_UNUSED(event);
Q_UNUSED(transform);
+
+ m_view->setAutoScroll(false);
+ m_view->hideDropIndicator();
+
+ KItemListWidget* widget = hoveredWidget();
+ if (widget) {
+ widget->setHovered(false);
+ emit itemUnhovered(widget->index());
+ }
return false;
}
bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
{
- Q_UNUSED(event);
- Q_UNUSED(transform);
+ if (!m_model || !m_view) {
+ return false;
+ }
+
+ event->acceptProposedAction();
+
+ 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) {
+ bool droppingBetweenItems = false;
+ if (m_model->sortRole().isEmpty()) {
+ // The model supports inserting items between other items.
+ droppingBetweenItems = (m_view->showDropIndicator(pos) >= 0);
+ }
+
+ const int index = newHoveredWidget->index();
+ if (!droppingBetweenItems && m_model->supportsDropping(index)) {
+ // Something has been dragged on an item.
+ m_view->hideDropIndicator();
+ 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);
- return false;
+ if (!m_view) {
+ return false;
+ }
+
+ m_autoActivationTimer->stop();
+ m_view->setAutoScroll(false);
+
+ const QPointF pos = transform.map(event->pos());
+
+ int dropAboveIndex = -1;
+ if (m_model->sortRole().isEmpty()) {
+ // The model supports inserting of items between other items.
+ dropAboveIndex = m_view->showDropIndicator(pos);
+ }
+
+ if (dropAboveIndex >= 0) {
+ // Something has been dropped between two items.
+ m_view->hideDropIndicator();
+ emit aboveItemDropEvent(dropAboveIndex, event);
+ } else {
+ // Something has been dropped on an item or on an empty part of the view.
+ emit itemDropEvent(m_view->itemAt(pos), event);
+ }
+
+ return true;
}
bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent* 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) {
+ if (oldHoveredWidget) {
+ oldHoveredWidget->setHovered(false);
+ emit itemUnhovered(oldHoveredWidget->index());
+ }
+
+ if (newHoveredWidget) {
+ newHoveredWidget->setHovered(true);
+ emit itemHovered(newHoveredWidget->index());
+ }
+ }
+
return false;
}
{
Q_UNUSED(event);
Q_UNUSED(transform);
+
+ if (!m_model || !m_view) {
+ return false;
+ }
+
+ foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
+ if (widget->isHovered()) {
+ widget->setHovered(false);
+ emit itemUnhovered(widget->index());
+ }
+ }
return false;
}
}
switch (event->type()) {
-// case QEvent::FocusIn:
-// case QEvent::FocusOut:
-// return focusEvent(static_cast<QFocusEvent*>(event));
case QEvent::KeyPress:
return keyPressEvent(static_cast<QKeyEvent*>(event));
case QEvent::InputMethod:
return mouseMoveEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
case QEvent::GraphicsSceneMouseRelease:
return mouseReleaseEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
+ case QEvent::GraphicsSceneMouseDoubleClick:
+ return mouseDoubleClickEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
case QEvent::GraphicsSceneWheel:
return wheelEvent(static_cast<QGraphicsSceneWheelEvent*>(event), QTransform());
case QEvent::GraphicsSceneDragEnter:
return false;
}
+void KItemListController::slotViewScrollOffsetChanged(qreal current, qreal previous)
+{
+ if (!m_view) {
+ return;
+ }
+
+ KItemListRubberBand* rubberBand = m_view->rubberBand();
+ if (rubberBand->isActive()) {
+ const qreal diff = current - previous;
+ // TODO: Ideally just QCursor::pos() should be used as
+ // new end-position but it seems there is no easy way
+ // to have something like QWidget::mapFromGlobal() for QGraphicsWidget
+ // (... or I just missed an easy way to do the mapping)
+ QPointF endPos = rubberBand->endPosition();
+ if (m_view->scrollOrientation() == Qt::Vertical) {
+ endPos.ry() += diff;
+ } else {
+ endPos.rx() += diff;
+ }
+
+ rubberBand->setEndPosition(endPos);
+ }
+}
+
+void KItemListController::slotRubberBandChanged()
+{
+ if (!m_view || !m_model || m_model->count() <= 0) {
+ return;
+ }
+
+ const KItemListRubberBand* rubberBand = m_view->rubberBand();
+ const QPointF startPos = rubberBand->startPosition();
+ const QPointF endPos = rubberBand->endPosition();
+ QRectF rubberBandRect = QRectF(startPos, endPos).normalized();
+
+ const bool scrollVertical = (m_view->scrollOrientation() == Qt::Vertical);
+ if (scrollVertical) {
+ rubberBandRect.translate(0, -m_view->scrollOffset());
+ } else {
+ rubberBandRect.translate(-m_view->scrollOffset(), 0);
+ }
+
+ if (!m_oldSelection.isEmpty()) {
+ // Clear the old selection that was available before the rubberband has
+ // been activated in case if no Shift- or Control-key are pressed
+ const bool shiftOrControlPressed = QApplication::keyboardModifiers() & Qt::ShiftModifier ||
+ QApplication::keyboardModifiers() & Qt::ControlModifier;
+ if (!shiftOrControlPressed) {
+ m_oldSelection.clear();
+ }
+ }
+
+ QSet<int> selectedItems;
+
+ // Select all visible items that intersect with the rubberband
+ foreach (const KItemListWidget* widget, m_view->visibleItemListWidgets()) {
+ const int index = widget->index();
+
+ const QRectF widgetRect = m_view->itemRect(index);
+ if (widgetRect.intersects(rubberBandRect)) {
+ 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);
+ }
+ }
+ }
+
+ // Select all invisible items that intersect with the rubberband. Instead of
+ // iterating all items only the area which might be touched by the rubberband
+ // will be checked.
+ const bool increaseIndex = scrollVertical ?
+ startPos.y() > endPos.y(): startPos.x() > endPos.x();
+
+ int index = increaseIndex ? m_view->lastVisibleIndex() + 1 : m_view->firstVisibleIndex() - 1;
+ bool selectionFinished = false;
+ do {
+ const QRectF widgetRect = m_view->itemRect(index);
+ if (widgetRect.intersects(rubberBandRect)) {
+ selectedItems.insert(index);
+ }
+
+ if (increaseIndex) {
+ ++index;
+ selectionFinished = (index >= m_model->count()) ||
+ ( scrollVertical && widgetRect.top() > rubberBandRect.bottom()) ||
+ (!scrollVertical && widgetRect.left() > rubberBandRect.right());
+ } else {
+ --index;
+ selectionFinished = (index < 0) ||
+ ( scrollVertical && widgetRect.bottom() < rubberBandRect.top()) ||
+ (!scrollVertical && widgetRect.right() < rubberBandRect.left());
+ }
+ } while (!selectionFinished);
+
+ if (QApplication::keyboardModifiers() & Qt::ControlModifier) {
+ // If Control is pressed, the selection state of all items in the rubberband is toggled.
+ // Therefore, the new selection contains:
+ // 1. All previously selected items which are not inside the rubberband, and
+ // 2. all items inside the rubberband which have not been selected previously.
+ m_selectionManager->setSelectedItems((m_oldSelection - selectedItems) + (selectedItems - m_oldSelection));
+ }
+ else {
+ m_selectionManager->setSelectedItems(selectedItems + m_oldSelection);
+ }
+}
+
+void KItemListController::startDragging()
+{
+ if (!m_view || !m_model) {
+ return;
+ }
+
+ const QSet<int> selectedItems = m_selectionManager->selectedItems();
+ if (selectedItems.isEmpty()) {
+ return;
+ }
+
+ QMimeData* data = m_model->createMimeData(selectedItems);
+ if (!data) {
+ return;
+ }
+
+ // The created drag object will be owned and deleted
+ // by QApplication::activeWindow().
+ QDrag* drag = new QDrag(QApplication::activeWindow());
+ drag->setMimeData(data);
+
+ const QPixmap pixmap = m_view->createDragPixmap(selectedItems);
+ drag->setPixmap(pixmap);
+
+ const QPoint hotSpot(pixmap.width() / 2, 0);
+ drag->setHotSpot(hotSpot);
+
+ drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction, 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(int index) const
+{
+ if (m_keyboardAnchorIndex < 0) {
+ return index;
+ }
+
+ const int maxIndex = m_model->count() - 1;
+ if (index == maxIndex) {
+ return index;
+ }
+
+ // Calculate the index of the last column inside the row of the current index
+ int lastColumnIndex = index;
+ while (keyboardAnchorPos(lastColumnIndex + 1) > keyboardAnchorPos(lastColumnIndex)) {
+ ++lastColumnIndex;
+ if (lastColumnIndex >= maxIndex) {
+ return index;
+ }
+ }
+
+ // 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(int index) const
+{
+ if (m_keyboardAnchorIndex < 0 || index == 0) {
+ return index;
+ }
+
+ // Calculate the index of the first column inside the row of the current index
+ int firstColumnIndex = index;
+ while (keyboardAnchorPos(firstColumnIndex - 1) < keyboardAnchorPos(firstColumnIndex)) {
+ --firstColumnIndex;
+ if (firstColumnIndex <= 0) {
+ return index;
+ }
+ }
+
+ // 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;
+}
+
+void KItemListController::updateExtendedSelectionRegion()
+{
+ if (m_view) {
+ const bool extend = (m_selectionBehavior != MultiSelection);
+ KItemListStyleOption option = m_view->styleOption();
+ if (option.extendedSelectionRegion != extend) {
+ option.extendedSelectionRegion = extend;
+ m_view->setStyleOption(option);
+ }
+ }
+}
+
#include "kitemlistcontroller.moc"
projects / dolphin.git / blobdiff