bool UIGChooserHandlerMouse::handleMousePress(QGraphicsSceneMouseEvent *pEvent) const
{
/* Get item under mouse cursor: */
QPointF scenePos = pEvent->scenePos();
if (QGraphicsItem *pItemUnderMouse = model()->itemAt(scenePos))
{
/* Which button it was? */
switch (pEvent->button())
{
/* Left one? */
case Qt::LeftButton:
{
/* Which item we just clicked? */
UIGChooserItem *pClickedItem = 0;
/* Was that a group item? */
if (UIGChooserItemGroup *pGroupItem = qgraphicsitem_cast<UIGChooserItemGroup*>(pItemUnderMouse))
pClickedItem = pGroupItem;
/* Or a machine one? */
else if (UIGChooserItemMachine *pMachineItem = qgraphicsitem_cast<UIGChooserItemMachine*>(pItemUnderMouse))
pClickedItem = pMachineItem;
/* If we had clicked one of required item types: */
if (pClickedItem && !pClickedItem->isRoot())
{
/* Was 'shift' modifier pressed? */
if (pEvent->modifiers() == Qt::ShiftModifier)
{
/* Calculate positions: */
UIGChooserItem *pFirstItem = model()->currentItem();
int iFirstPosition = model()->navigationList().indexOf(pFirstItem);
int iClickedPosition = model()->navigationList().indexOf(pClickedItem);
/* Populate list of items from 'first' to 'clicked': */
QList<UIGChooserItem*> items;
if (iFirstPosition <= iClickedPosition)
for (int i = iFirstPosition; i <= iClickedPosition; ++i)
items << model()->navigationList().at(i);
else
for (int i = iFirstPosition; i >= iClickedPosition; --i)
items << model()->navigationList().at(i);
/* Set that list as current: */
model()->setCurrentItems(items);
/* Move focus to clicked item: */
model()->setFocusItem(pClickedItem);
}
/* Was 'control' modifier pressed? */
else if (pEvent->modifiers() == Qt::ControlModifier)
{
/* Invert selection state for clicked item: */
if (model()->currentItems().contains(pClickedItem))
model()->removeFromCurrentItems(pClickedItem);
else
model()->addToCurrentItems(pClickedItem);
/* Move focus to clicked item: */
model()->setFocusItem(pClickedItem);
}
/* Was no modifiers pressed? */
else if (pEvent->modifiers() == Qt::NoModifier)
{
/* Make clicked item the current one: */
model()->setCurrentItem(pClickedItem);
}
}
break;
}
/* Right one? */
case Qt::RightButton:
{
/* Which item we just clicked? */
UIGChooserItem *pClickedItem = 0;
/* Was that a group item? */
if (UIGChooserItemGroup *pGroupItem = qgraphicsitem_cast<UIGChooserItemGroup*>(pItemUnderMouse))
pClickedItem = pGroupItem;
/* Or a machine one? */
else if (UIGChooserItemMachine *pMachineItem = qgraphicsitem_cast<UIGChooserItemMachine*>(pItemUnderMouse))
pClickedItem = pMachineItem;
/* If we had clicked one of required item types: */
if (pClickedItem && !pClickedItem->isRoot())
{
/* Select clicked item if not selected yet: */
if (!model()->currentItems().contains(pClickedItem))
model()->setCurrentItem(pClickedItem);
}
break;
}
default:
break;
}
}
/* Pass all other events: */
return false;
}
bool UIGChooserHandlerMouse::handleMousePress(QGraphicsSceneMouseEvent *pEvent) const
{
/* Get item under mouse cursor: */
QPointF scenePos = pEvent->scenePos();
if (QGraphicsItem *pItemUnderMouse = model()->itemAt(scenePos))
{
/* Which button it was? */
switch (pEvent->button())
{
/* Left one? */
case Qt::LeftButton:
{
/* Which item we just clicked? */
UIGChooserItem *pClickedItem = 0;
/* Was that a group item? */
if (UIGChooserItemGroup *pGroupItem = qgraphicsitem_cast<UIGChooserItemGroup*>(pItemUnderMouse))
pClickedItem = pGroupItem;
/* Or a machine one? */
else if (UIGChooserItemMachine *pMachineItem = qgraphicsitem_cast<UIGChooserItemMachine*>(pItemUnderMouse))
pClickedItem = pMachineItem;
/* If we had clicked one of the required item types: */
if (pClickedItem && !pClickedItem->isRoot())
{
/* Old selection list: */
QList<UIGChooserItem*> oldSelectionList = model()->selectionList();
/* Move focus to clicked item: */
model()->setFocusItem(pClickedItem);
/* Was 'shift' modifier pressed? */
if (pEvent->modifiers() == Qt::ShiftModifier)
{
/* Calculate positions: */
UIGChooserItem *pFirstItem = model()->selectionList().first();
int iFirstPosition = model()->navigationList().indexOf(pFirstItem);
int iClickedPosition = model()->navigationList().indexOf(pClickedItem);
/* Clear selection: */
model()->clearSelectionList();
/* Select all the items from 'first' to 'clicked': */
if (iFirstPosition <= iClickedPosition)
for (int i = iFirstPosition; i <= iClickedPosition; ++i)
model()->addToSelectionList(model()->navigationList().at(i));
else
for (int i = iFirstPosition; i >= iClickedPosition; --i)
model()->addToSelectionList(model()->navigationList().at(i));
}
/* Was 'control' modifier pressed? */
else if (pEvent->modifiers() == Qt::ControlModifier)
{
/* Select clicked item, inverting if necessary: */
if (model()->selectionList().contains(pClickedItem))
model()->removeFromSelectionList(pClickedItem);
else
model()->addToSelectionList(pClickedItem);
}
/* Was no modifiers pressed? */
else if (pEvent->modifiers() == Qt::NoModifier)
{
/* Move selection to clicked item: */
model()->clearSelectionList();
model()->addToSelectionList(pClickedItem);
}
/* Selection list changed?: */
if (oldSelectionList != model()->selectionList())
model()->notifySelectionChanged();
}
break;
}
/* Right one? */
case Qt::RightButton:
{
/* Which item we just clicked? */
UIGChooserItem *pClickedItem = 0;
/* Was that a group item? */
if (UIGChooserItemGroup *pGroupItem = qgraphicsitem_cast<UIGChooserItemGroup*>(pItemUnderMouse))
pClickedItem = pGroupItem;
/* Or a machine one? */
else if (UIGChooserItemMachine *pMachineItem = qgraphicsitem_cast<UIGChooserItemMachine*>(pItemUnderMouse))
pClickedItem = pMachineItem;
/* If we had clicked one of the required item types: */
if (pClickedItem)
{
/* For non-root items: */
if (!pClickedItem->isRoot())
{
/* Is clicked item in selection list: */
bool fIsClickedItemInSelectionList = contains(model()->selectionList(), pClickedItem);
/* Move focus to clicked item (with selection if not selected yet): */
model()->setFocusItem(pClickedItem, !fIsClickedItemInSelectionList);
}
}
break;
}
default:
break;
}
}
/* Pass all other events: */
return false;
}