void ViewWidget::mousePressEvent(QMouseEvent *event)
{
assert(event);
/* Ignore right click events as they will open context menus when
* used on trace labels. Those menus prevent ViewWidget::mouseReleaseEvent()
* to be triggered upon button release, making mouse_down_item_
* hold the last reference to a view item that might have been deleted
* from the context menu, preventing it from being freed as intended.
*/
if (event->button() & Qt::LeftButton) {
mouse_down_point_ = event->pos();
mouse_down_item_ = get_mouse_over_item(event->pos());
mouse_left_press_event(event);
}
}
void ViewWidget::mouseMoveEvent(QMouseEvent *e)
{
assert(e);
mouse_point_ = e->pos();
if (!e->buttons())
item_hover(get_mouse_over_item(e->pos()));
else if (e->buttons() & Qt::LeftButton) {
if (!item_dragging_) {
if ((e->pos() - mouse_down_point_).manhattanLength() <
QApplication::startDragDistance())
return;
if (!accept_drag())
return;
item_dragging_ = true;
}
// Do the drag
drag_items(e->pos() - mouse_down_point_);
}
}
