#include "kitemlistcontroller.h"
#include "kitemlistview.h"
+#include "kitemlistrubberband_p.h"
#include "kitemlistselectionmanager.h"
+#include <QApplication>
+#include <QDrag>
#include <QEvent>
#include <QGraphicsSceneEvent>
-#include <QTransform>
+#include <QMimeData>
#include <KDebug>
KItemListController::KItemListController(QObject* parent) :
QObject(parent),
+ m_dragging(false),
m_selectionBehavior(NoSelection),
m_model(0),
m_view(0),
- m_selectionManager(new KItemListSelectionManager(this))
+ m_selectionManager(new KItemListSelectionManager(this)),
+ m_pressedIndex(-1),
+ m_pressedMousePos(),
+ m_oldSelection()
{
}
m_view->setModel(m_model);
}
+ m_selectionManager->setModel(m_model);
+
emit modelChanged(m_model, oldModel);
}
}
KItemListView* oldView = m_view;
+ if (oldView) {
+ disconnect(oldView, SIGNAL(offsetChanged(qreal,qreal)), this, SLOT(slotViewOffsetChanged(qreal,qreal)));
+ }
+
m_view = 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)));
}
emit viewChanged(m_view, oldView);
bool KItemListController::keyPressEvent(QKeyEvent* event)
{
- Q_UNUSED(event);
- return false;
+ 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;
+ 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;
+ }
+ }
+
+ switch (key) {
+ case Qt::Key_Home:
+ index = 0;
+ break;
+
+ case Qt::Key_End:
+ index = itemCount - 1;
+ break;
+
+ case Qt::Key_Left:
+ if (index > 0) {
+ index--;
+ }
+ break;
+
+ case Qt::Key_Right:
+ if (index < itemCount - 1) {
+ index++;
+ }
+ break;
+
+ case Qt::Key_Up:
+ if (index >= itemsPerRow) {
+ index -= itemsPerRow;
+ }
+ 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;
+ }
+ }
+ break;
+
+ case Qt::Key_Space:
+ if (controlPressed) {
+ m_selectionManager->endAnchoredSelection();
+ m_selectionManager->setSelected(index, 1, KItemListSelectionManager::Toggle);
+ m_selectionManager->beginAnchoredSelection(index);
+ }
+
+ default:
+ break;
+ }
+
+ if (m_selectionManager->currentItem() != index) {
+ if (controlPressed) {
+ m_selectionManager->endAnchoredSelection();
+ }
+
+ m_selectionManager->setCurrentItem(index);
+
+ if (!shiftOrControlPressed || m_selectionBehavior == SingleSelection) {
+ m_selectionManager->clearSelection();
+ m_selectionManager->setSelected(index, 1);
+ }
+
+ if (!shiftPressed) {
+ m_selectionManager->beginAnchoredSelection(index);
+ }
+ }
+ return true;
}
bool KItemListController::inputMethodEvent(QInputMethodEvent* event)
bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
{
- Q_UNUSED(event);
- Q_UNUSED(transform);
+ if (!m_view) {
+ return false;
+ }
+
+ m_dragging = false;
+ m_pressedMousePos = transform.map(event->pos());
+ m_pressedIndex = m_view->itemAt(m_pressedMousePos);
+
+ if (m_view->isAboveExpansionToggle(m_pressedIndex, m_pressedMousePos)) {
+ return true;
+ }
+
+ const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
+ const bool controlPressed = event->modifiers() & Qt::ControlModifier;
+
+ if (m_selectionBehavior == SingleSelection) {
+ m_selectionManager->clearSelection();
+ }
+
+ 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) {
+ 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;
+ }
+
+ return true;
+ } else {
+ KItemListRubberBand* rubberBand = m_view->rubberBand();
+ QPointF startPos = m_pressedMousePos;
+ if (m_view->scrollOrientation() == Qt::Vertical) {
+ startPos.ry() += m_view->offset();
+ 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();
+ }
+
+ m_oldSelection = m_selectionManager->selectedItems();
+ rubberBand->setStartPosition(startPos);
+ rubberBand->setEndPosition(startPos);
+ rubberBand->setActive(true);
+ connect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged()));
+ }
+
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 (!m_dragging && (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;
+ }
+ }
+ } else {
+ KItemListRubberBand* rubberBand = m_view->rubberBand();
+ if (rubberBand->isActive()) {
+ QPointF endPos = transform.map(event->pos());
+ if (m_view->scrollOrientation() == Qt::Vertical) {
+ endPos.ry() += m_view->offset();
+ 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();
+ }
+ 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) {
- bool emitItemClicked = true;
- if (event->button() & Qt::LeftButton) {
- if (m_view->isAboveExpansionToggle(index, pos)) {
- emit itemExpansionToggleClicked(index);
- emitItemClicked = false;
- }
- }
+ if (!m_view) {
+ return false;
+ }
- if (emitItemClicked) {
- emit itemClicked(index, event->button());
+ 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();
+
+ if (rubberBand->startPosition() != rubberBand->endPosition()) {
+ clearSelection = false;
+ }
+ }
+
+ const QPointF pos = transform.map(event->pos());
+ const int index = m_view->itemAt(pos);
+
+ 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<int>() << index);
+ }
+
+ bool emitItemClicked = true;
+ if (event->button() & Qt::LeftButton) {
+ if (m_view->isAboveExpansionToggle(index, pos)) {
+ emit itemExpansionToggleClicked(index);
+ emitItemClicked = false;
+ } else if (shiftOrControlPressed) {
+ // The mouse click should only update the selection, not trigger the item
+ emitItemClicked = false;
}
}
+
+ if (emitItemClicked) {
+ emit itemClicked(index, event->button());
+ }
+ } else if (clearSelection) {
+ m_selectionManager->clearSelection();
}
+ m_dragging = false;
+ m_pressedMousePos = QPointF();
+ m_pressedIndex = -1;
return false;
}
{
Q_UNUSED(event);
Q_UNUSED(transform);
+
+ m_dragging = false;
return false;
}
bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
{
- Q_UNUSED(event);
+ // 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;
+ }
+ }
+
+ if (unhoveredWidget != hoveredWidget) {
+ if (unhoveredWidget) {
+ unhoveredWidget->setHovered(false);
+ emit itemUnhovered(unhoveredWidget->index());
+ }
+
+ if (hoveredWidget) {
+ hoveredWidget->setHovered(true);
+ emit itemHovered(hoveredWidget->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 false;
}
+void KItemListController::slotViewOffsetChanged(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->offset());
+ } else {
+ rubberBandRect.translate(-m_view->offset(), 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->itemBoundingRect(index);
+ if (widgetRect.intersects(rubberBandRect)) {
+ const QRectF iconRect = widget->iconBoundingRect().translated(widgetRect.topLeft());
+ const QRectF textRect = widget->textBoundingRect().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->itemBoundingRect(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);
+
+ m_selectionManager->setSelectedItems(selectedItems + m_oldSelection);
+}
+
+bool KItemListController::startDragging()
+{
+ if (!m_view || !m_model) {
+ return false;
+ }
+
+ const QSet<int> selectedItems = m_selectionManager->selectedItems();
+ QMimeData* data = m_model->createMimeData(selectedItems);
+ if (!data) {
+ return false;
+ }
+
+ // 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);
+
+ drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction, Qt::IgnoreAction);
+ return true;
+}
+
#include "kitemlistcontroller.moc"
projects / dolphin.git / blobdiff