#include "kitemlistcontroller.h"
#include "kitemlistview.h"
+#include "kitemlistrubberband_p.h"
#include "kitemlistselectionmanager.h"
#include <QEvent>
#include <QGraphicsSceneEvent>
-#include <QTransform>
#include <KDebug>
}
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)
{
+ if (!m_view) {
+ return false;
+ }
+
const QPointF pos = transform.map(event->pos());
m_pressedIndex = m_view->itemAt(pos);
- m_selectionManager->setCurrentItem(m_pressedIndex);
+ if (m_view->isAboveExpansionToggle(m_pressedIndex, pos)) {
+ return true;
+ }
+
+ const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
+ const bool controlPressed = event->modifiers() & Qt::ControlModifier;
+ const bool shiftOrControlPressed = shiftPressed || controlPressed;
+
+ if (!shiftOrControlPressed || 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;
+ }
- // 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);
+ return true;
+ } else {
+ KItemListRubberBand* rubberBand = m_view->rubberBand();
+ QPointF startPos = pos;
+ if (m_view->scrollOrientation() == Qt::Vertical) {
+ startPos.ry() += m_view->offset();
+ } else {
+ startPos.rx() += m_view->offset();
+ }
+ rubberBand->setStartPosition(startPos);
+ rubberBand->setEndPosition(startPos);
+ rubberBand->setActive(true);
}
return false;
bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
{
- Q_UNUSED(event);
- Q_UNUSED(transform);
+ if (!m_view) {
+ return false;
+ }
+
+ 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();
+ } 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 && index == m_pressedIndex) {
- bool emitItemClicked = true;
- if (event->button() & Qt::LeftButton) {
- if (m_view->isAboveExpansionToggle(index, pos)) {
- emit itemExpansionToggleClicked(index);
- emitItemClicked = false;
- }
- else if (event->modifiers() & Qt::ShiftModifier || event->modifiers() & Qt::ControlModifier) {
- // The mouse click should only update the selection, not trigger the item.
- emitItemClicked = false;
- }
- }
+ if (!m_view) {
+ return false;
+ }
+
+ m_view->rubberBand()->setActive(false);
- if (emitItemClicked) {
- emit itemClicked(index, event->button());
+ const QPointF pos = transform.map(event->pos());
+ const int index = m_view->itemAt(pos);
+ const bool shiftOrControlPressed = event->modifiers() & Qt::ShiftModifier || event->modifiers() & Qt::ControlModifier;
+
+ if (index >= 0 && index == m_pressedIndex) {
+ // The release event is done above the same item as the press event
+ 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 (!shiftOrControlPressed) {
+ m_selectionManager->clearSelection();
}
m_pressedIndex = -1;
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);
+ }
+}
+
#include "kitemlistcontroller.moc"
projects / dolphin.git / blobdiff