/**
* @brief Receives a mouse press event.
* @param event The event to handle.
*/
void TilesetView::mousePressEvent(QMouseEvent* event) {
if (model == nullptr) {
return;
}
if (state == State::NORMAL) {
QList<QGraphicsItem*> items_under_mouse = items(
QRect(event->pos(), QSize(1, 1)),
Qt::IntersectsItemBoundingRect // Pick transparent items too.
);
QGraphicsItem* item = items_under_mouse.empty() ? nullptr : items_under_mouse.first();
const bool control_or_shift = (event->modifiers() & (Qt::ControlModifier | Qt::ShiftModifier));
bool keep_selected = false;
if (control_or_shift) {
// If ctrl or shift is pressed, keep the existing selection.
keep_selected = true;
}
else if (item != nullptr && item->isSelected()) {
// When clicking an already selected item, keep the existing selection too.
keep_selected = true;
}
if (!keep_selected) {
scene->clearSelection();
}
if (event->button() == Qt::LeftButton) {
if (item != nullptr &&
item->isSelected() &&
model->get_selection_count() == 1 &&
!is_read_only()) {
// Clicking on an already selected item: allow to move it.
start_state_moving_pattern(event->pos());
}
else {
// Otherwise initialize a selection rectangle.
initially_selected_items = scene->selectedItems();
start_state_drawing_rectangle(event->pos());
}
}
else {
if (item != nullptr && !item->isSelected()) {
// Select the right-clicked item.
item->setSelected(true);
}
}
}
}
void ULLineEditor::mousePressEvent ( QGraphicsSceneMouseEvent * mouseEvent )
{
if ( itemAt ( mouseEvent->scenePos() ) )
{
QGraphicsItem * it =itemAt ( mouseEvent->scenePos() );
it->isSelected() ? it->setSelected ( false ) : it->setSelected ( true );
}
else
{
mouseSelectBegin = mouseEvent->scenePos();
mouseSelect = true;
mouseSelectRect->setPos ( mouseEvent->pos() );
addItem ( mouseSelectRect );
}
}
void SCgSelectSubGraph::select(SCgObject *obj)
{
obj->setSelected(true);
// select parent
//if (obj->parentItem() != 0 && SCgObject::isSCgObjectType(obj->parentItem()->type()))
//select(static_cast<SCgObject*>(obj->parentItem()));
switch(obj->type())
{
case SCgBus::Type:
{
SCgBus *bus = static_cast<SCgBus*>(obj);
if (bus->owner() != 0 && !bus->owner()->isSelected())
select(bus->owner());
}
break;
case SCgNode::Type:
{
SCgNode *node = static_cast<SCgNode*>(obj);
if (node->bus() != 0 && !node->bus()->isSelected())
select(node->bus());
}
break;
case SCgPair::Type:
{
SCgPair *pair = static_cast<SCgPair*>(obj);
if (pair->beginObject() != 0 && !pair->beginObject()->isSelected())
select(pair->beginObject());
if (pair->endObject() != 0 && !pair->endObject()->isSelected())
select(pair->endObject());
}
break;
case SCgContour::Type:
{
SCgContour *contour = static_cast<SCgContour*>(obj);
QList<QGraphicsItem*> items = contour->childItems();
QGraphicsItem *item = 0;
foreach(item, items)
{
// skip not sc.g-objects and selected objects
if (!SCgObject::isSCgObjectType(item->type()) || item->isSelected())
continue;
select(static_cast<SCgObject*>(item));
}
}
break;
}
SCgObject::SCgObjectList connected = obj->connectedObjects();
SCgObject *c_obj = 0;
foreach(c_obj, connected)
{
// skip selected objects
if (c_obj->isSelected())
continue;
select(c_obj);
}
}
void EnhancedGraphicsScene::mouseMoveEvent(QGraphicsSceneMouseEvent * mouseEvent)
{
static int cnt = 0;
QPointF mousePosition = mouseEvent->scenePos();
QGraphicsItem* pItem = itemAt(mousePosition.x(), mousePosition.y(), QTransform());
if (pItem == 0)
{
if(!rot && !selectedItems().isEmpty())
{
QGraphicsScene::mouseMoveEvent(mouseEvent);
return;
}
}
else if (pItem->isSelected() == false && !rot && !selectedItems().isEmpty())
{
QGraphicsScene::mouseMoveEvent(mouseEvent);
return;
}
// We want to move the items only if the mouse is clicked and not in rubberband
if((rubberBandOn == false) && clicked)
{
if(rot)
{
QLog_Info(LOG_ID_INFO, "entering rotation code");
// we must find the most east point of all selected object as well
// as the most west point. With this, we determine if we turn around
// one or the other
QList<QGraphicsItem*> selectionList = selectedItems();
QGraphicsItemGroup *group = createItemGroup(selectionList);
// Get the bounding rect of the group to determine the rotation
if(firstRot)
{
// Calculate X coordinate of the center of the top segment, we need to separate cases if there is only
// one selected object, and to use this object's bounding rect. Otherwise, the bounding rect of the group
// won't fit the object
qreal center = 0;
if(selectionList.size() == 1)
{
center = (selectionList.first()->mapToScene(0,0).x() + selectionList.first()->mapToScene(selectionList.first()->boundingRect().topRight()).x()) / 2;
}
else
center = group->boundingRect().center().x();
if(mouseEvent->scenePos().x() < center)
{
originPoint = findRotationPivot(selectionList, false);
previousRot = 0;
}
else
{
originPoint = findRotationPivot(selectionList, true);
previousRot = 0;
}
// Check the rotation offset of the position of the mouse
qreal a1 = mouseEvent->scenePos().x() - originPoint.x();
qreal a2 = mouseEvent->scenePos().y() - originPoint.y();
previousAngle = qAtan2(a2, a1);
firstRot = false;
}
qreal a1 = mouseEvent->scenePos().x() - originPoint.x();
qreal a2 = mouseEvent->scenePos().y() - originPoint.y();
qreal angle = qAtan2(a2, a1);
QTransform trans;
trans.translate(originPoint.x(), originPoint.y())
.rotate(-previousRot)
.rotate(( (angle - previousAngle) * 180 / 3.14))
.translate(-originPoint.x(), -originPoint.y());
previousRot = ((angle - previousAngle) * 180 / 3.14);
group->setTransform(trans, true);
// group must be destroyed so that we can interact with the items
destroyItemGroup(group);
}
if(cnt++ % 6 == 0)
{
cnt = 0;
refreshItemPositionsOnNetwork();
}
// In case of a rotation, we don't want the graphics items
// to get the mouse move event, so we return without
// calling mouse move event of qgraphicsscene
if(rot) return;
}
QGraphicsScene::mouseMoveEvent(mouseEvent);
}
/**
* @brief Receives a mouse release event.
* @param event The event to handle.
*/
void TilesetView::mouseReleaseEvent(QMouseEvent* event) {
if (model == nullptr) {
return;
}
bool do_selection = false;
if (state == State::DRAWING_RECTANGLE) {
// If the rectangle is empty, consider it was a click and not a drag.
// In this case we simply select the clicked item.
do_selection = current_area_item->rect().isEmpty();
end_state_drawing_rectangle();
}
else if (state == State::MOVING_PATTERN) {
end_state_moving_pattern();
}
if (do_selection) {
if (event->button() == Qt::LeftButton || event->button() == Qt::RightButton) {
// Left or right button: possibly change the selection.
QList<QGraphicsItem*> items_under_mouse = items(
QRect(event->pos(), QSize(1, 1)),
Qt::IntersectsItemBoundingRect // Pick transparent items too.
);
QGraphicsItem* item = items_under_mouse.empty() ? nullptr : items_under_mouse.first();
const bool control_or_shift = (event->modifiers() & (Qt::ControlModifier | Qt::ShiftModifier));
bool keep_selected = false;
if (control_or_shift) {
// If ctrl or shift is pressed, keep the existing selection.
keep_selected = true;
}
else if (item != nullptr && item->isSelected()) {
// When clicking an already selected item, keep the existing selection too.
keep_selected = true;
}
if (!keep_selected) {
scene->clearSelection();
}
if (event->button() == Qt::LeftButton) {
if (item != nullptr) {
if (control_or_shift) {
// Left-clicking an item while pressing control or shift: toggle it.
item->setSelected(!item->isSelected());
}
else {
if (!item->isSelected()) {
// Select the item.
item->setSelected(true);
}
}
}
}
}
}
}
