#include "kitemlistcontroller.h"
#include "kitemlistview.h"
+#include "kitemlistrubberband_p.h"
#include "kitemlistselectionmanager.h"
+#include <QApplication>
#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)
{
- switch (event->key()) {
+ 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:
- m_selectionManager->setCurrentItem(0);
+ index = 0;
break;
+
case Qt::Key_End:
- m_selectionManager->setCurrentItem(m_model->count() - 1);
+ 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;
}
- return false;
+
+ 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);
switch (m_selectionBehavior) {
case NoSelection:
- return true;
+ break;
+
case SingleSelection:
m_selectionManager->setSelected(m_pressedIndex);
- return true;
+ break;
+
case MultiSelection:
if (controlPressed) {
m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
m_selectionManager->beginAnchoredSelection(m_pressedIndex);
- }
- else {
- if (shiftPressed && m_selectionManager->isAnchoredSelectionActive()) {
- // The anchored selection is continued automatically by calling
- // m_selectionManager->setCurrentItem(m_pressedIndex), see above -> nothing more to do here
- return true;
- }
-
+ } 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 = pos;
+ 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();
+ }
+ 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;
+ }
+
+ 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);
- 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 (!m_view) {
+ return false;
+ }
- if (emitItemClicked) {
- emit itemClicked(index, event->button());
+ KItemListRubberBand* rubberBand = m_view->rubberBand();
+ if (rubberBand->isActive()) {
+ disconnect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged()));
+ rubberBand->setActive(false);
+ m_pressedIndex = -1;
+ return false;
+ }
+
+ 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) {
- m_selectionManager->clearSelection();
+ 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;
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);
+ }
+
+ QSet<int> previousSelectedItems;
+ if (m_selectionManager->hasSelection()) {
+ // Don't clear the current selection in case if the user pressed the
+ // Shift- or Control-key during the rubberband selection
+ const bool shiftOrControlPressed = QApplication::keyboardModifiers() & Qt::ShiftModifier ||
+ QApplication::keyboardModifiers() & Qt::ControlModifier;
+ if (shiftOrControlPressed) {
+ previousSelectedItems = m_selectionManager->selectedItems();
+ }
+ }
+
+ 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 + previousSelectedItems);
+}
+
#include "kitemlistcontroller.moc"
projects / dolphin.git / blobdiff