protected new void OnMouseMove(MouseMoveEvent e) { if (!m_Active) { return; } if (m_GraphView == null) { return; } var ve = (VisualElement)e.target; Vector2 gvMousePos = ve.ChangeCoordinatesTo(m_GraphView.contentContainer, e.localMousePosition); m_PanDiff = GetEffectivePanSpeed(gvMousePos); if (m_PanDiff != Vector3.zero) { m_PanSchedule.Resume(); } else { m_PanSchedule.Pause(); } // We need to monitor the mouse diff "by hand" because we stop positionning the graph elements once the // mouse has gone out. m_MouseDiff = m_originalMouse - e.mousePosition; foreach (KeyValuePair <GraphElement, Rect> v in m_OriginalPos) { GraphElement ce = v.Key; // Detach the selected element from its parent before dragging it // TODO: Make it more generic if (ce.parent is StackNode) { StackNode stackNode = ce.parent as StackNode; ce.RemoveFromHierarchy(); m_GraphView.AddElement(ce); // Reselect it because RemoveFromHierarchy unselected it ce.Select(m_GraphView, true); if (m_GraphView.elementRemovedFromStackNode != null) { m_GraphView.elementRemovedFromStackNode(stackNode, ce); } } MoveElement(ce, v.Value); } List <ISelectable> selection = m_GraphView.selection; // TODO: Replace with a temp drawing or something...maybe manipulator could fake position // all this to let operation know which element sits under cursor...or is there another way to draw stuff that is being dragged? IDropTarget dropTarget = GetDropTargetAt(e.mousePosition, selection.OfType <VisualElement>()); if (m_PrevDropTarget != dropTarget && m_PrevDropTarget != null) { using (DragExitedEvent eexit = DragExitedEvent.GetPooled(e)) { SendDragAndDropEvent(eexit, selection, m_PrevDropTarget); } } using (DragUpdatedEvent eupdated = DragUpdatedEvent.GetPooled(e)) { SendDragAndDropEvent(eupdated, selection, dropTarget); } m_PrevDropTarget = dropTarget; selectedElement = null; e.StopPropagation(); }
protected new void OnMouseDown(MouseDownEvent e) { if (m_Active) { e.StopImmediatePropagation(); return; } if (CanStartManipulation(e)) { m_GraphView = target as GraphView; if (m_GraphView == null) { return; } selectedElement = null; // avoid starting a manipulation on a non movable object clickedElement = e.target as GraphElement; if (clickedElement == null) { var ve = e.target as VisualElement; clickedElement = ve.GetFirstAncestorOfType <GraphElement>(); if (clickedElement == null) { return; } } // Only start manipulating if the clicked element is movable, selected and that the mouse is in its clickable region (it must be deselected otherwise). if (!clickedElement.IsMovable() || !clickedElement.HitTest(clickedElement.WorldToLocal(e.mousePosition))) { return; } // If we hit this, this likely because the element has just been unselected // It is important for this manipulator to receive the event so the previous one did not stop it // but we shouldn't let it propagate to other manipulators to avoid a re-selection if (!m_GraphView.selection.Contains(clickedElement)) { e.StopImmediatePropagation(); return; } selectedElement = clickedElement; m_OriginalPos = new Dictionary <GraphElement, OriginalPos>(); foreach (ISelectable s in m_GraphView.selection) { GraphElement ce = s as GraphElement; if (ce == null || !ce.IsMovable()) { continue; } StackNode stackNode = null; if (ce.parent is StackNode) { stackNode = ce.parent as StackNode; if (stackNode.IsSelected(m_GraphView)) { continue; } } Rect geometry = ce.GetPosition(); Rect geometryInContentViewSpace = ce.shadow.parent.ChangeCoordinatesTo(m_GraphView.contentViewContainer, geometry); m_OriginalPos[ce] = new OriginalPos { pos = geometryInContentViewSpace, scope = ce.GetContainingScope(), stack = stackNode, stackIndex = stackNode != null?stackNode.IndexOf(ce) : -1 }; } m_originalMouse = e.mousePosition; m_ItemPanDiff = Vector3.zero; if (m_PanSchedule == null) { m_PanSchedule = m_GraphView.schedule.Execute(Pan).Every(k_PanInterval).StartingIn(k_PanInterval); m_PanSchedule.Pause(); } m_Active = true; target.CaptureMouse(); // We want to receive events even when mouse is not over ourself. e.StopImmediatePropagation(); } }
protected new void OnMouseDown(MouseDownEvent e) { if (m_Active) { e.StopImmediatePropagation(); return; } if (CanStartManipulation(e)) { m_GraphView = target as GraphView; if (m_GraphView == null) { return; } selectedElement = null; // avoid starting a manipulation on a non movable object clickedElement = e.target as GraphElement; if (clickedElement == null) { var ve = e.target as VisualElement; clickedElement = ve.GetFirstAncestorOfType <GraphElement>(); if (clickedElement == null) { return; } } // Only start manipulating if the clicked element is movable, selected and that the mouse is in its clickable region (it must be deselected otherwise). if (!clickedElement.IsMovable() || !m_GraphView.selection.Contains(clickedElement) || !clickedElement.HitTest(clickedElement.WorldToLocal(e.mousePosition))) { return; } selectedElement = clickedElement; m_OriginalPos = new Dictionary <GraphElement, Rect>(); foreach (ISelectable s in m_GraphView.selection) { GraphElement ce = s as GraphElement; if (ce == null || !ce.IsMovable()) { continue; } if (ce.parent is StackNode) { StackNode stackNode = ce.parent as StackNode; if (stackNode.IsSelected(m_GraphView)) { continue; } } Rect geometry = ce.GetPosition(); Rect geometryInContentViewSpace = ce.shadow.parent.ChangeCoordinatesTo(m_GraphView.contentViewContainer, geometry); m_OriginalPos[ce] = geometryInContentViewSpace; } m_originalMouse = e.mousePosition; m_ItemPanDiff = Vector3.zero; if (m_PanSchedule == null) { m_PanSchedule = m_GraphView.schedule.Execute(Pan).Every(k_PanInterval).StartingIn(k_PanInterval); m_PanSchedule.Pause(); } m_Active = true; target.TakeMouseCapture(); // We want to receive events even when mouse is not over ourself. e.StopImmediatePropagation(); } }