/// <summary>
/// Creates a new NodeLayoutManager.
/// </summary>
/// <param name="edgePen">The pen which is used to draw the edges connecting the nodes.</param>
/// <param name="edgePenSubReferenced">The pen which is used to draw the edges connecting sub-referenced nodes.</param>
/// <param name="skipLabels">Defines if labels are drawn or not.</param>
/// <param name="rootNode">The root of the nodes shown in the view.</param>
internal NodeLayoutManager(NodeViewData rootNode, Pen edgePen, Pen edgePenSubReferenced, bool skipLabels)
{
_rootNodeLayout = rootNode;
_edgePen = edgePen;
_edgePenReadOnly = edgePenSubReferenced;
_skipLabels = skipLabels;
}
/// <summary>
/// Draws the graph.
/// </summary>
/// <param name="graphics">The graphics object we want to draw to.</param>
/// <param name="currentNode">The node the mouse is currently hovering over.</param>
/// <param name="selectedNode">The node which is currently selected.</param>
/// <param name="graphMousePos">The mouse's position in the graph.</param>
internal void DrawGraph(Graphics graphics, NodeViewData currentNode, NodeViewData selectedNode, PointF graphMousePos)
{
// setup drawing
graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBilinear;
graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
graphics.Transform = new System.Drawing.Drawing2D.Matrix(_scale, 0.0f, 0.0f, _scale, _offset.X, _offset.Y);
// update display bounding boxes
_rootNodeLayout.UpdateDisplay(_offset.X, _offset.Y, _scale);
// draw comment backgrounds
if (!_skipLabels)
{
_rootNodeLayout.DrawCommentBackground(graphics, _renderDepth, _padding);
}
// draw the edges
if (_edgePen != null && _renderDepth > 0)
{
_rootNodeLayout.DrawEdges(graphics, _edgePen, _edgePenReadOnly, _renderDepth - 1);
}
// draw the nodes
_rootNodeLayout.Draw(graphics, currentNode, selectedNode, _skipLabels, graphMousePos, _renderDepth);
// draw comment text
if (!_skipLabels)
{
_rootNodeLayout.DrawCommentText(graphics, _renderDepth);
}
// draw last mouse pos
//e.Graphics.DrawRectangle(Pens.Red, graphMousePos.X -1.0f, graphMousePos.Y -1.0f, 2.0f, 2.0f);
}
/// <summary>
/// Draws the node's shape as the background.
/// </summary>
/// <param name="graphics">The graphics object used for drawing.</param>
/// <param name="nvd">The node view data of the node the subitem belongs to.</param>
/// <param name="brush">The brush to draw the node's shape.</param>
protected void DrawBackground(Graphics graphics, NodeViewData nvd, Brush brush)
{
if (brush != null)
{
nvd.DrawShapeBackground(graphics, nvd.BoundingBox, brush);
}
}
public override void Draw(Graphics graphics, NodeViewData nvd, RectangleF boundingBox)
{
// render background
DrawBackground(graphics, nvd, _selected ? _backgroundSelected : _backgroundNormal);
// render the label
PointF center = new PointF(boundingBox.Left + boundingBox.Width * 0.5f, boundingBox.Top + boundingBox.Height * 0.5f);
SizeF labelSize = MeasureDisplayStringWidth(graphics, Label, _labelFont);
// draw text
switch (_alignment)
{
case (Alignment.Left):
graphics.DrawString(Label, _labelFont, _labelBrush, boundingBox.Left + 6.0f, center.Y - labelSize.Height * 0.5f);
break;
case (Alignment.Center):
graphics.DrawString(Label, _labelFont, _labelBrush, center.X - labelSize.Width * 0.5f, center.Y - labelSize.Height * 0.5f);
break;
case (Alignment.Right):
graphics.DrawString(Label, _labelFont, _labelBrush, boundingBox.Right - labelSize.Width - 6.0f, center.Y - labelSize.Height * 0.5f);
break;
}
//graphics.DrawRectangle(Pens.Red, boundingBox.X, boundingBox.Y, boundingBox.Width, boundingBox.Height);
}
/// <summary>
/// Draws the node's shape as the background.
/// </summary>
/// <param name="dc">The graphics object used for drawing.</param>
/// <param name="nvd">The node view data of the node the subitem belongs to.</param>
/// <param name="brush">The brush to draw the node's shape.</param>
protected void DrawBackground(DrawingContext dc, NodeViewData nvd, Brush brush)
{
if (brush != null)
{
nvd.DrawShape(dc, nvd.BoundingBox, brush, null);
}
}
public override void Update(NodeViewData node, DrawingContext dc)
{
// calculate the extent used by the label
FormattedText formattedText = _labelFont.FormatText(Label, Brushes.White);
_width = formattedText.Width;
}
public override void Draw(DrawingContext dc, NodeViewData nvd, Rect boundingBox)
{
// render background
DrawBackground(dc, nvd, _selected ? _backgroundSelected : _backgroundNormal);
// render the label
Point center = new Point(boundingBox.Left + boundingBox.Width * 0.5f, boundingBox.Top + boundingBox.Height * 0.5f);
FormattedText formattedText = _labelFont.FormatText(Label, _labelBrush);
// draw text
switch (_alignment)
{
case (Alignment.Left):
dc.DrawText(formattedText, new Point(boundingBox.Left + 6.0, center.Y - formattedText.Height * 0.5));
break;
case (Alignment.Center):
dc.DrawText(formattedText, new Point(center.X - formattedText.Width * 0.5, center.Y - formattedText.Height * 0.5));
break;
case (Alignment.Right):
dc.DrawText(formattedText, new Point(boundingBox.Right - formattedText.Width - 6.0, center.Y - formattedText.Height * 0.5));
break;
}
//graphics.DrawRectangle(Pens.Red, boundingBox.X, boundingBox.Y, boundingBox.Width, boundingBox.Height);
}
/// <summary>
/// Draws the graph.
/// </summary>
/// <param name="dc">The graphics object we want to draw to.</param>
/// <param name="currentNode">The node the mouse is currently hovering over.</param>
/// <param name="selectedNode">The node which is currently selected.</param>
/// <param name="graphMousePos">The mouse's position in the graph.</param>
internal void DrawGraph(DrawingContext dc, NodeViewData currentNode, NodeViewData selectedNode, Point graphMousePos)
{
// setup drawing
dc.PushTransform(new MatrixTransform(_scale, 0.0, 0.0, _scale, _offset.X, _offset.Y));
// update display bounding boxes
_rootNodeLayout.UpdateDisplay(_offset.X, _offset.Y, _scale);
// draw comment backgrounds
if (!_skipLabels)
{
_rootNodeLayout.DrawCommentBackground(dc, _renderDepth, _padding);
}
// draw the edges
if (_edgePen != null && _renderDepth > 0)
{
_rootNodeLayout.DrawEdges(dc, _edgePen, _edgePenReadOnly, _renderDepth - 1);
}
// draw the nodes
_rootNodeLayout.Draw(dc, currentNode, selectedNode, _skipLabels, graphMousePos, _renderDepth);
// draw comment text
if (!_skipLabels)
{
_rootNodeLayout.DrawCommentText(dc, _renderDepth);
}
// draw last mouse pos
//e.Graphics.DrawRectangle(Pens.Red, graphMousePos.X -1.0f, graphMousePos.Y -1.0f, 2.0f, 2.0f);
dc.Pop();
}
/// <summary>
/// This function adapts the children of the view that they represent the children of the node this view is for.
/// Children are added and removed.
/// </summary>
/// <param name="processedBehaviors">A list of previously processed behaviours to deal with circular references.</param>
public virtual void SynchronizeWithNode(IList <BehaviorNode> processedBehaviors)
{
// allow the node to add some final children or remove some
_node.PreLayoutUpdate(this);
// if the counts do not fit we must rebuild
bool rebuild = _node.Children.Count != _children.Count;
// check if all children are associated to the correct children of the node
if (!rebuild)
{
for (int i = 0; i < _node.Children.Count; ++i)
{
// this view is associated to another node than the child of the node
if (_children[i].Node != _node.Children[i])
{
rebuild = true;
break;
}
}
}
// check if we must rebuild the child list
if (rebuild)
{
// store the old children
List <NodeViewData> oldChildren = _children;
// create a new list
_children = new List <NodeViewData>();
// update the children
foreach (Node child in _node.Children)
{
// check if our old child list already contains a view for this node. If so copy it.
NodeViewData nvd = child.FindNodeViewData(oldChildren);
if (nvd != null)
{
Debug.Check(_rootBehavior == nvd.RootBehavior);
_children.Add(nvd);
}
// otherwise create a new view
else
{
_children.Add(child.CreateNodeViewData(this, _rootBehavior));
}
}
}
// synchronise the children as well
foreach (NodeViewData child in _children)
{
Debug.Check(child.RootBehavior == _rootBehavior);
child.SynchronizeWithNode(processedBehaviors);
}
}
/// <summary>
/// Is called when the node was double-clicked. Used for referenced behaviours.
/// </summary>
/// <param name="nvd">The view data of the node in the current view.</param>
/// <param name="layoutChanged">Does the layout need to be recalculated?</param>
/// <returns>Returns if the node handled the double click or not.</returns>
public override bool OnDoubleClick(NodeViewData nvd, out bool layoutChanged)
{
NodeViewDataReferencedBehavior nvdrb = (NodeViewDataReferencedBehavior)nvd;
nvdrb.IsExpanded = !nvdrb.IsExpanded;
layoutChanged = true;
return(true);
}
public override void Draw(DrawingContext dc, NodeViewData nvd, Rect boundingBox)
{
Event evnt = (Event)_attachment;
// use a different brush depending on if the event is reacted to or blocked.
_labelBrush = evnt.BlockEvent ? Brushes.Orange : Brushes.White;
base.Draw(dc, nvd, boundingBox);
}
public NodeViewDataStyled(NodeViewData parent, BehaviorNode rootBehavior, Node node, Pen borderPen, Brush backgroundBrush, Brush draggedBackgroundBrush, string label, string description) :
base(parent, rootBehavior, node,
NodeShape.RoundedRectangle,
new Style(backgroundBrush, null, Brushes.White),
new Style(null, __defaultCurrentBorderPen, null),
new Style(null, __defaultSelectedBorderPen, null),
new Style(draggedBackgroundBrush, null, null),
label, __defaultLabelFont, 120, 35, description)
{
}
/// <summary>
/// Handles when an event of a node is selected.
/// </summary>
/// <param name="node">The node whose event is selected.</param>
private void control_ClickEvent(NodeViewData node)
{
// if there is no subitem selected, use the properties of the node
if (node.SelectedSubItem == null || node.SelectedSubItem.SelectableObject == null)
{
PropertiesDock.InspectObject(node.Node);
}
// publish the properties of the subitem's selection object
else
{
PropertiesDock.InspectObject(node.SelectedSubItem.SelectableObject);
}
}
/// <summary>
/// Draws the node to the graph.
/// </summary>
/// <param name="graphics">The graphics object we render to.</param>
/// <param name="currentNode">The current node under the mouse cursor.</param>
/// <param name="selectedNode">The currently selected node.</param>
/// <param name="isDragged">Determines if the node is currently being dragged.</param>
/// <param name="graphMousePos">The mouse position in the untransformed graph.</param>
/// <param name="renderDepth">The depth which is still rendered.</param>
public virtual void Draw(Graphics graphics, NodeViewData currentNode, NodeViewData selectedNode, bool isDragged, PointF graphMousePos, int renderDepth)
{
_node.Draw(graphics, this, currentNode == null ? false : this.Node == currentNode.Node, selectedNode == null ? false : this.Node == selectedNode.Node, isDragged, graphMousePos);
// draw children
if (renderDepth > 0)
{
foreach (NodeViewData child in _children)
{
child.Draw(graphics, currentNode, selectedNode, isDragged, graphMousePos, renderDepth - 1);
}
}
}
/// <summary>
/// Creates a new view for a given node.
/// </summary>
/// <param name="parent">The parent of the new NodeViewData.</param>
/// <param name="rootBehavior">The behaviour which is the root of the graph the given node is shown in.</param>
/// <param name="node">The node the view is created for.</param>
public NodeViewData(NodeViewData parent, BehaviorNode rootBehavior, Node node)
{
Debug.Check(rootBehavior != null);
_parent = parent;
_rootBehavior = rootBehavior;
_node = node;
if (parent != null)
{
WasModified = parent.WasModified;
}
_node.WasModified += new Node.WasModifiedEventDelegate(node_WasModified);
}
/// <summary>
/// Returns the node a given location is in.
/// </summary>
/// <param name="location">The location you want to check.</param>
/// <returns>Returns null if the position is not inside any node.</returns>
public NodeViewData IsInside(PointF location)
{
if (_displayBoundingBox.Contains(location))
{
return(this);
}
foreach (NodeViewData node in _children)
{
NodeViewData insidenode = node.IsInside(location);
if (insidenode != null)
{
return(insidenode);
}
}
return(null);
}
/// <summary>
/// Returns the first NodeViewData which is associated with the given node. Notice that there might be other NodeViewDatas which are ignored.
/// </summary>
/// <param name="node">The node you want to get the NodeViewData for.</param>
/// <returns>Returns the first NodeViewData found.</returns>
public virtual NodeViewData FindNodeViewData(Node node)
{
// check if this is a fitting view
if (_node == node)
{
return(this);
}
// search the children
foreach (NodeViewData child in _children)
{
NodeViewData result = child.FindNodeViewData(node);
if (result != null)
{
return(result);
}
}
return(null);
}
private void listView_DoubleClick(object sender, EventArgs e)
{
// check if there is an item selected
if (listView.SelectedItems.Count < 1)
{
return;
}
// check if this item has a node connected to it. The no-errors message doesn't
Nodes.BehaviorNode node = (Nodes.BehaviorNode)listView.SelectedItems[0].Tag;
if (node == null)
{
return;
}
// show the behaviour and select the node.
NodeViewData nvd = _behaviorTreeList.ShowNode((Nodes.Node)node);
_behaviorTreeView.SelectedNode = nvd;
}
/// <summary>
/// Handles when a node is clicked.
/// </summary>
/// <param name="node">The node that was clicked.</param>
private void control_ClickNode(NodeViewData node)
{
PropertiesDock.InspectObject(node == null ? null : node.Node);
}
/// <summary>
/// Handles when a mouse button is let go of.
/// </summary>
protected override void OnMouseUp(MouseEventArgs e)
{
// check if we were dragging or copying an existing node
if(e.Button ==MouseButtons.Right && _movedNode !=null || e.Button ==MouseButtons.Left && _copiedNode !=null || e.Button ==MouseButtons.Left && _clipboardPasteMode)
{
// if we have a valid target node continue
if(_dragTargetNode !=null)
{
Node sourcenode= null;
if(_movedNode !=null)
sourcenode= _movedNode;
else if(_copiedNode !=null)
sourcenode= _keyShiftIsDown ? (Nodes.Node)_copiedNode.CloneBranch() : (Nodes.Node)_copiedNode.Clone();
else if(_clipboardPasteMode)
sourcenode= _keyShiftIsDown ? (Nodes.Node)_clipboardNode.CloneBranch() : (Nodes.Node)_clipboardNode.Clone();
// move the dragged node to the target node, according to the attach mode
switch(_dragAttachMode)
{
// the node will be placed above the traget node
case(NodeAttachMode.Top):
if(_movedNode !=null)
{
if(_keyShiftIsDown)
{
_movedNode.Parent.RemoveChild(_movedNode.ParentConnector, _movedNode);
}
else
{
if(!_movedNode.ExtractNode())
throw new Exception(Resources.ExceptionNodeCouldNotBeExtracted);
}
}
int n= _dragTargetNode.Node.ParentConnector.GetChildIndex(_dragTargetNode.Node);
_dragTargetNode.Node.Parent.AddChild(_dragTargetNode.Node.ParentConnector, sourcenode, n);
LayoutChanged();
break;
// the node will be placed below the target node
case(NodeAttachMode.Bottom):
if(_movedNode !=null)
{
if(_keyShiftIsDown)
{
_movedNode.Parent.RemoveChild(_movedNode.ParentConnector, _movedNode);
}
else
{
if(!_movedNode.ExtractNode())
throw new Exception(Resources.ExceptionNodeCouldNotBeExtracted);
}
}
int m= _dragTargetNode.Node.ParentConnector.GetChildIndex(_dragTargetNode.Node);
_dragTargetNode.Node.Parent.AddChild(_dragTargetNode.Node.ParentConnector, sourcenode, m +1);
LayoutChanged();
break;
// the node will be placed in front of the target node
case(NodeAttachMode.Left):
if(_movedNode !=null)
{
if(_keyShiftIsDown)
{
_movedNode.Parent.RemoveChild(_movedNode.ParentConnector, _movedNode);
}
else
{
if(!_movedNode.ExtractNode())
throw new Exception(Resources.ExceptionNodeCouldNotBeExtracted);
}
}
Node parent= _dragTargetNode.Node.Parent;
Node.Connector conn= _dragTargetNode.Node.ParentConnector;
int o= conn.GetChildIndex(_dragTargetNode.Node);
parent.RemoveChild(conn, _dragTargetNode.Node);
parent.AddChild(conn, sourcenode, o);
sourcenode.AddChild(sourcenode.DefaultConnector, _dragTargetNode.Node);
break;
// the node will simply attached to the target node
case(NodeAttachMode.Right):
if(_movedNode !=null)
{
if(_keyShiftIsDown)
{
_movedNode.Parent.RemoveChild(_movedNode.ParentConnector, _movedNode);
}
else
{
if(!_movedNode.ExtractNode())
throw new Exception(Resources.ExceptionNodeCouldNotBeExtracted);
}
}
_dragTargetNode.Node.AddChild(_dragTargetConnector, sourcenode);
LayoutChanged();
break;
}
// update the node's label
sourcenode.OnPropertyValueChanged(false);
}
// reset all the drag data
if(!_clipboardPasteMode)
{
_copiedNode= null;
_movedNode= null;
_dragTargetNode= null;
_dragNodeDefaults= null;
_movedNodeGraph= null;
}
// redraw the graph
Invalidate();
}
Cursor= Cursors.Hand;
base.OnMouseUp(e);
}
public NodeViewDataReferencedBehavior(NodeViewData parent, Nodes.BehaviorNode rootBehavior, Nodes.ReferencedBehaviorNode node) : base(parent, rootBehavior, (Node)node)
{
}
/// <summary>
/// Handles when a node is clicked.
/// </summary>
/// <param name="node">The node that was clicked.</param>
private void control_ClickNode(NodeViewData node)
{
PropertiesDock.InspectObject(node ==null ? null : node.Node);
}
/// <summary>
/// Handles when the user doucle-clicks.
/// </summary>
protected override void OnMouseDoubleClick(MouseEventArgs e)
{
// when the user double-clicked a node and the graph was not dragged and it was the left mouse button, continue
if(_currentNode !=null && DoubleClickNode !=null && !_wasDragged && e.Button ==MouseButtons.Left)
{
// call double-clicked on the node
bool layoutChanged;
if(_currentNode.Node.OnDoubleClick(_currentNode, out layoutChanged))
{
// check if the node requires the layout to be updated, for example when expanding or collapsing referenced behaviours
if(layoutChanged)
{
// keep the position of the current node
_maintainNodePosition= _currentNode;
_graphOrigin= _maintainNodePosition.DisplayBoundingBox.Location;
LayoutChanged();
}
}
else
{
// if the node did not handle the double-click the developer may
if(DoubleClickNode !=null)
DoubleClickNode(_currentNode);
}
}
else base.OnMouseDoubleClick(e);
}
/// <summary>
/// Handles when a key is pressed.
/// </summary>
protected override void OnKeyDown(KeyEventArgs e)
{
switch(e.KeyCode)
{
// store when the control key is pressed
case(Keys.ControlKey):
_keyControlIsDown= true;
if(_copiedNode ==null && _movedNode ==null)
Cursor= Cursors.Arrow;
break;
// store when the shift key is pressed
case(Keys.ShiftKey):
_keyShiftIsDown= true;
// update the drawn graph for dragging and duplicating
if(_movedNodeGraph !=null)
{
_movedNodeGraph.RenderDepth= _keyShiftIsDown ? int.MaxValue : 0;
Invalidate();
}
break;
// copy to clipboard
case(Keys.C):
if(_keyControlIsDown && _selectedNode !=null)
{
_clipboardNode= _keyShiftIsDown ? (Node)_selectedNode.Node.CloneBranch() : (Node)_selectedNode.Node.Clone();
}
break;
// paste from clipboard
case(Keys.V):
if(!_clipboardPasteMode)
{
_clipboardPasteMode= _keyControlIsDown && _clipboardNode !=null;
if(_clipboardPasteMode)
{
// create the layout manager used to draw the graph
_movedNodeGraph= new NodeLayoutManager(_clipboardNode.CreateNodeViewData(null, _rootNode.RootBehavior), _nodeLayoutManager.EdgePen, _nodeLayoutManager.EdgePenReadOnly, true);
_movedNodeGraph.Scale= 0.3f;
_movedNodeGraph.RenderDepth= _keyShiftIsDown ? int.MaxValue : 0;
// use the existing node as the node defaults
_dragNodeDefaults= _clipboardNode;
Invalidate();
}
}
break;
// cut to clipboard
case(Keys.X):
if(_keyControlIsDown && _selectedNode !=null)
{
_clipboardNode= _keyShiftIsDown ? (Node)_selectedNode.Node.CloneBranch() : (Node)_selectedNode.Node.Clone();
// store the selected node
Node node= _selectedNode.Node;
// clear the selected and current node
_selectedNode= null;
_currentNode= null;
if(_keyShiftIsDown)
{
// remove the node
node.Parent.RemoveChild(node.ParentConnector, node);
// call the ClickNode event to delselect the node in the editor
if(ClickNode !=null)
ClickNode(null);
}
else
{
if(node.ExtractNode())
{
// call the ClickNode event to delselect the node in the editor
if(ClickNode !=null)
ClickNode(null);
}
}
}
break;
// handle when the delete key is pressed
case(Keys.Delete):
// when we have a node selected which is not the root node, continue
if(_selectedNode !=null && _selectedNode.Node.Parent !=null)
{
// check whether we have to delete an event or a node
if(_selectedNode.Node.SelectedSubItem ==null)
{
// store the selected node
Node node= _selectedNode.Node;
// clear the selected and current node
_selectedNode= null;
_currentNode= null;
if(_keyShiftIsDown)
{
// remove the node
node.Parent.RemoveChild(node.ParentConnector, node);
// call the ClickNode event to delselect the node in the editor
if(ClickNode !=null)
ClickNode(null);
}
else
{
if(node.ExtractNode())
{
// call the ClickNode event to delselect the node in the editor
if(ClickNode !=null)
ClickNode(null);
}
}
}
else
{
// just let the node delete the selected subitem
if(_selectedNode.Node.RemoveSelectedSubItem())
{
_selectedNode.Node.BehaviorWasModified();
// call the ClickNode event to select the node instead of the deleted subitem
if(ClickNode !=null)
ClickNode(_selectedNode);
}
}
// the layout needs to be recalculated
LayoutChanged();
}
break;
default: base.OnKeyDown(e); break;
}
}
/// <summary>
/// Handles when the root node changes.
/// </summary>
/// <param name="node">The node which was changed, in our case always the root node.</param>
void nodeViewData_WasModified(NodeViewData node)
{
LayoutChanged();
}
/// <summary>
/// Centres the given node in the view.
/// </summary>
/// <param name="node">The node which will be centred.</param>
internal void CenterNode(NodeViewData node)
{
// we use the existing maintain position stuff for that
RectangleF bbox= node.BoundingBox;
_maintainNodePosition= node;
// if the node was not yet shown there is no bounding box so we simply use the min height for that
float height= bbox.Height <=0.0f ? node.Node.MinHeight : bbox.Height;
_graphOrigin= new PointF(20.0f, ClientSize.Height *0.5f - height *0.5f);
Invalidate();
}
public override void Update(NodeViewData node, Graphics graphics)
{
// calculate the extent used by the label
_width = MeasureDisplayStringWidth(graphics, Label, _labelFont).Width;
}
public NodeViewDataReferencedBehavior(NodeViewData parent, Nodes.BehaviorNode rootBehavior, Nodes.ReferencedBehaviorNode node, Pen borderPen, Brush backgroundBrush, string label, string description) :
base(parent, rootBehavior, (Node)node, borderPen, backgroundBrush, label, description)
{
}
/// <summary>
/// Attaches a dragged node from the node explorer to an existing node.
/// </summary>
/// <param name="nvd">The node the new node will be attached to.</param>
/// <param name="mode">The way the new node will be attached.</param>
/// <param name="nodetag">The tag of the you want to create.</param>
/// <param name="label">The label of the new node.</param>
private void InsertNewNode(NodeViewData nvd, NodeAttachMode mode, NodeTag nodetag)
{
// check if the attach mode is valid
if(mode ==NodeAttachMode.Event || mode ==NodeAttachMode.None)
throw new Exception("A node cannot be created with the given attach mode");
if(nodetag.Type !=NodeTagType.Behavior && nodetag.Type !=NodeTagType.Node)
throw new Exception("Only behaviours and nodes can be attached to a behaviour tree");
Node node= nvd.Node;
Node newnode;
// when we attach a behaviour we must create a special referenced behaviour node
if(nodetag.Type ==NodeTagType.Behavior)
{
// reset any previously loaded behaviour
FileManagers.FileManager.ResetLoadedBehavior();
// get the behaviour we want to reference
BehaviorNode behavior= _behaviorTreeList.LoadBehavior(nodetag.Filename);
// a behaviour may not reference itself
if(behavior ==_rootNode.RootBehavior)
return;
// create the referenced behaviour node for the behaviour
ReferencedBehavior refnode= new ReferencedBehavior(_rootNode.RootBehavior, behavior);
// register the view so it gets updated when the referenced behaviour gets updated.
refnode.ReferencedBehaviorWasModified+= new ReferencedBehavior.ReferencedBehaviorWasModifiedEventDelegate(refnode_ReferencedBehaviorWasModified);
newnode= refnode;
}
else
{
// simply create the node which is supposed to be created.
newnode= Node.Create(nodetag.NodeType);
}
// update label
newnode.OnPropertyValueChanged(false);
// attach the new node with the correct mode
switch(mode)
{
// the new node is inserted in front of the target node
case(NodeAttachMode.Left):
Node parent= node.Parent;
int k= parent.Children.IndexOf(node);
Node.Connector conn= node.ParentConnector;
Debug.Check(conn !=null);
parent.RemoveChild(conn, node);
parent.AddChild(conn, newnode, k);
Node.Connector newconn= newnode.GetConnector(conn.Identifier);
Debug.Check(newconn !=null);
newnode.AddChild(newconn, node);
// automatically select the new node
_selectedNodePending= newnode;
_selectedNodePendingParent= nvd.Parent;
break;
// the new node is simply added to the target node's children
case(NodeAttachMode.Right):
node.AddChild(_dragTargetConnector, newnode);
// automatically select the new node
_selectedNodePending= newnode;
_selectedNodePendingParent= nvd;
break;
// the new node is placed above the target node
case(NodeAttachMode.Top):
int n= _dragTargetNode.Node.ParentConnector.GetChildIndex(node);
node.Parent.AddChild(_dragTargetNode.Node.ParentConnector, newnode, n);
// automatically select the new node
_selectedNodePending= newnode;
_selectedNodePendingParent= nvd.Parent;
break;
// the new node is placed below the target node
case(NodeAttachMode.Bottom):
int m= _dragTargetNode.Node.ParentConnector.GetChildIndex(node);
node.Parent.AddChild(_dragTargetNode.Node.ParentConnector, newnode, m +1);
// automatically select the new node
_selectedNodePending= newnode;
_selectedNodePendingParent= nvd.Parent;
break;
}
// the layout needs to be recalculated
LayoutChanged();
}
/// <summary>
/// Adds nodes to the referenced behaviour which represent sub-referenced behaviours.
/// </summary>
/// <param name="processedBehaviors">A list of processed behaviours to handle circular references.</param>
/// <param name="parent">The node the sub-referenced behaviours will be added to.</param>
/// <param name="node">The current node we are checking.</param>
protected void GenerateReferencedBehaviorsTree(ProcessedBehaviors processedBehaviors, NodeViewData parent, Node node)
{
if (!processedBehaviors.MayProcess(node))
{
return;
}
// check if this is a referenced behaviour
if (node is ReferencedBehaviorNode)
{
// create the dummy node and add it without marking the behaviour as being modified as these are no REAL nodes.
NodeViewData rb = node.CreateNodeViewData(parent, _rootBehavior);
#if DEBUG
rb.IsSubreferencedGraphNode();
#endif
rb.DoSynchronizeWithNode(processedBehaviors);
Connector conn = parent.GetConnector("GenericChildren");
Debug.Check(conn != null);
Connector rbconn = parent.GetConnector("GenericChildren");
Debug.Check(rbconn != null);
bool parentReadOnly = conn.IsReadOnly;
conn.IsReadOnly = false;
parent.AddChildNotModified(conn, rb);
conn.IsReadOnly = parentReadOnly;
// we have a circular reference here. Skip the children
if (((ReferencedBehaviorNode)node).Reference == _rootBehavior)
{
rbconn.IsReadOnly = true;
return;
}
// do the same for all the children
foreach (Node child in node.Children)
{
GenerateReferencedBehaviorsTree(processedBehaviors.Branch(child), rb, child);
}
rbconn.IsReadOnly = true;
}
else if (node is Impulse)
{
// create the dummy node and add it without marking the behaviour as being modified as these are no REAL nodes.
NodeViewData ip = node.CreateNodeViewData(parent, _rootBehavior);
ip.DoSynchronizeWithNode(processedBehaviors);
// do the same for all the children
foreach (Node child in node.Children)
{
GenerateReferencedBehaviorsTree(processedBehaviors.Branch(child), ip, child);
}
if (ip.Children.Count > 0)
{
Connector conn = parent.GetConnector("GenericChildren");
Debug.Check(conn != null);
Connector ipconn = ip.GetConnector("GenericChildren");
Debug.Check(ipconn != null);
parent.AddChildNotModified(conn, ip);
ipconn.IsReadOnly = true;
}
}
else
{
// do the same for all the children
foreach (Node child in node.Children)
{
GenerateReferencedBehaviorsTree(processedBehaviors.Branch(child), parent, child);
}
}
}
/// <summary>
/// Handles the drawing and updating of the graph.
/// </summary>
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
// calculate the mouse position in the graph
PointF graphMousePos= _nodeLayoutManager.ViewToGraph(_lastMousePosition);
// when the layout was changed it needs to be recalculated
bool layoutChanged= _nodeLayoutManager.LayoutChanged;
if(layoutChanged)
_nodeLayoutManager.UpdateLayout(e.Graphics);
// centre the root behaviour if requested
if(_pendingCentreBehavior)
{
_pendingCentreBehavior= false;
CenterNode(_rootNode);
}
// select the pending node
if(_selectedNodePending !=null)
{
SelectedNode= _selectedNodePendingParent.GetChild(_selectedNodePending);
_selectedNodePending= null;
_selectedNodePendingParent= null;
if(ClickNode !=null)
ClickNode(_selectedNode);
}
// check if we must keep the original position of the mouse
if(_maintainMousePosition)
{
_maintainMousePosition= false;
// move the graph so that _graphOrigin is at the same position in the view as it was before
float mouseX= (graphMousePos.X - _graphOrigin.X) * _nodeLayoutManager.Scale + _nodeLayoutManager.Offset.X;
float mouseY= (graphMousePos.Y - _graphOrigin.Y) * _nodeLayoutManager.Scale + _nodeLayoutManager.Offset.Y;
_nodeLayoutManager.Offset= new PointF(mouseX, mouseY);
}
// check if we must keep the original position of _maintainNodePosition
else if(_maintainNodePosition !=null)
{
// move the graph so that _graphOrigin is at the same position in the view as it was before
RectangleF bbox= _maintainNodePosition.BoundingBox;
PointF viewpos= new PointF(bbox.Location.X * _nodeLayoutManager.Scale, bbox.Location.Y * _nodeLayoutManager.Scale);
_nodeLayoutManager.Offset= new PointF(_graphOrigin.X - viewpos.X, _graphOrigin.Y - viewpos.Y);
}
// reset the node whose position we want to keep
_maintainNodePosition= null;
// draw the graph to the view
_nodeLayoutManager.DrawGraph(e.Graphics, _currentNode, _selectedNode, graphMousePos);
// check if we are currently dragging a node and we must draw additional data
if(_dragTargetNode !=null && _dragTargetNode.Node !=_movedNode)
{
if(_dragAttachMode == NodeAttachMode.Event)
{
// we could draw some stuff for events here
}
else
{
// draw the arrows for the attach modes
// get the bounding box of the node
RectangleF bbox= _dragTargetNode.BoundingBox;
// get the bounding box of the connector
_dragTargetConnector= null;
// the depth of the area for the mouse
const float offset= 20.0f;
// the distance of the arrow from the border and its height
const float innerOffset= 6.0f;
// the horizintal middle of the node
float centerX= bbox.Left + bbox.Width *0.5f;
// the half width of the arrow depending of the node's height
float arrowHalfWidth= (bbox.Height - innerOffset - innerOffset) *0.5f;
// calculate the mouse areas for the different attach modes
RectangleF top= new RectangleF(bbox.X + offset, bbox.Top, bbox.Width - offset - offset, offset);
RectangleF bottom= new RectangleF(bbox.X + offset, bbox.Bottom - offset, bbox.Width - offset - offset, offset);
RectangleF left= new RectangleF(bbox.X, bbox.Y, offset, bbox.Height);
// update for dragging in a new node
BehaviorNode behavior= _dragNodeDefaults as BehaviorNode;
if(behavior !=null && behavior.FileManager ==null)
behavior= null;
bool hasParentBehavior= _dragTargetNode.HasParentBehavior(behavior);
bool parentHasParentBehavior= _dragTargetNode.Parent !=null && _dragTargetNode.Parent.HasParentBehavior(behavior);
bool mayTop= _dragTargetNode.Node.Parent !=null && !parentHasParentBehavior && _dragTargetNode.Node.ParentConnector.AcceptsChildren(1);
bool mayBottom= _dragTargetNode.Node.Parent !=null && !parentHasParentBehavior && _dragTargetNode.Node.ParentConnector.AcceptsChildren(1);
bool mayLeft= _dragTargetNode.Parent !=null && !parentHasParentBehavior && !hasParentBehavior &&
!_dragTargetNode.Node.ParentConnector.IsReadOnly &&
_dragNodeDefaults is Node &&
((Node)_dragNodeDefaults).CanAdoptNode(_dragTargetNode.Node) &&
!(_dragNodeDefaults.GetType() is BehaviorNode);
// update for moving an existing node
bool dragTargetHasParentMovedNode= false;
if(_movedNode !=null)
{
dragTargetHasParentMovedNode= _keyShiftIsDown && _dragTargetNode.HasParent(_movedNode);
// a node may not dragged on itself and may not dragged on one of its own children
if(_dragTargetNode.Node ==_movedNode || dragTargetHasParentMovedNode)
{
mayTop= false;
mayBottom= false;
mayLeft= false;
}
else
{
// a dragged node cannot be placed in the same position again
mayTop= mayTop && _dragTargetNode.Node.PreviousNode !=_movedNode;
mayBottom= mayBottom && _dragTargetNode.Node.NextNode !=_movedNode;
mayLeft= mayLeft && _movedNode.CanAdoptChildren(_dragTargetNode.Node) && (!_keyShiftIsDown || _movedNode.Children.Count ==0);
}
}
else if(_copiedNode !=null)
{
mayLeft= mayLeft && _copiedNode.CanAdoptChildren(_dragTargetNode.Node) && (!_keyShiftIsDown || _copiedNode.Children.Count ==0);
}
// reset the attach mode
_dragAttachMode= NodeAttachMode.None;
// the vertices needed to draw the arrows
PointF[] vertices= new PointF[3];
// draw the top arrow if this action is allowed
if(mayTop)
{
vertices[0]= new PointF(centerX - arrowHalfWidth, top.Bottom - innerOffset);
vertices[1]= new PointF(centerX, top.Top + innerOffset);
vertices[2]= new PointF(centerX + arrowHalfWidth, top.Bottom - innerOffset);
if(top.Contains(graphMousePos))
{
_dragAttachMode= NodeAttachMode.Top;
e.Graphics.FillPolygon(Brushes.White, vertices);
}
else e.Graphics.FillPolygon(Brushes.Black, vertices);
}
// draw the bottom arrow if this action is allowed
if(mayBottom)
{
vertices[0]= new PointF(centerX - arrowHalfWidth, bottom.Top + innerOffset);
vertices[1]= new PointF(centerX + arrowHalfWidth, bottom.Top + innerOffset);
vertices[2]= new PointF(centerX, bottom.Bottom - innerOffset);
if(_dragAttachMode ==NodeAttachMode.None && bottom.Contains(graphMousePos))
{
_dragAttachMode= NodeAttachMode.Bottom;
e.Graphics.FillPolygon(Brushes.White, vertices);
}
else e.Graphics.FillPolygon(Brushes.Black, vertices);
}
// draw the left arrow if this action is allowed
if(mayLeft)
{
vertices[0]= new PointF(left.Right - innerOffset, left.Top + innerOffset);
vertices[1]= new PointF(left.Right - innerOffset, left.Bottom - innerOffset);
vertices[2]= new PointF(left.Left + innerOffset, left.Top + left.Height *0.5f);
if(_dragAttachMode ==NodeAttachMode.None && left.Contains(graphMousePos))
{
_dragAttachMode= NodeAttachMode.Left;
e.Graphics.FillPolygon(Brushes.White, vertices);
}
else e.Graphics.FillPolygon(Brushes.Black, vertices);
}
// draw the right arrow if this action is allowed
foreach(Node.Connector connector in _dragTargetNode.Node.Connectors)
{
RectangleF bboxConnector= _dragTargetNode.Node.GetConnectorBoundingBox(bbox, connector);
//e.Graphics.DrawRectangle(Pens.Red, bboxConnector.X, bboxConnector.Y, bboxConnector.Width, bboxConnector.Height);
RectangleF right= new RectangleF(bboxConnector.Right - offset, bboxConnector.Y, offset, bboxConnector.Height);
bool mayRight= !dragTargetHasParentMovedNode && !hasParentBehavior && connector.AcceptsChildren(1);
if(mayRight && _movedNode !=null && connector ==_movedNode.ParentConnector)
mayRight= false;
if(mayRight)
{
float inOffset= bboxConnector.Height >innerOffset *4.0f ? innerOffset : 3.0f;
vertices[0]= new PointF(right.Left + inOffset, right.Top + inOffset);
vertices[1]= new PointF(right.Right - inOffset, right.Top + right.Height *0.5f);
vertices[2]= new PointF(right.Left + inOffset, right.Bottom - inOffset);
if(_dragAttachMode ==NodeAttachMode.None && right.Contains(graphMousePos))
{
_dragTargetConnector= connector;
_dragAttachMode= NodeAttachMode.Right;
e.Graphics.FillPolygon(Brushes.White, vertices);
}
else e.Graphics.FillPolygon(Brushes.Black, vertices);
}
}
}
}
// draw last mouse pos
//e.Graphics.DrawRectangle(Pens.Red, graphMousePos.X -1.0f, graphMousePos.Y -1.0f, 2.0f, 2.0f);
//when we are dragging an existing node we draw a small graph representing it
if(_movedNodeGraph !=null)
{
// update the layout for the graph. This happens only once inside the function.
_movedNodeGraph.UpdateLayout(e.Graphics);
// offset the graph to the mouse position
_movedNodeGraph.Offset= new PointF(_nodeLayoutManager.Offset.X + graphMousePos.X * _nodeLayoutManager.Scale,
_nodeLayoutManager.Offset.Y + graphMousePos.Y * _nodeLayoutManager.Scale - _movedNodeGraph.RootNodeLayout.LayoutRectangle.Height *0.5f * _movedNodeGraph.Scale);
// draw the graph
_movedNodeGraph.DrawGraph(e.Graphics, null, null, graphMousePos);
}
//if(_currentNode !=null && _currentNode.SubItems.Count >0)
// Invalidate();
}
/// <summary> /// Called when the node is drawn. /// </summary> /// <param name="dc">The graphics object used to draw the subitem.</param> /// <param name="nvd">The node view data of the node the subitem belongs to.</param> /// <param name="boundingBox">The bounding box of the subitem. Drawing is clipped to this.</param> public abstract void Draw(DrawingContext dc, NodeViewData nvd, Rect boundingBox);
/// <summary>
/// Draws the node to the graph.
/// </summary>
/// <param name="graphics">The graphics object we render to.</param>
/// <param name="currentNode">The current node under the mouse cursor.</param>
/// <param name="selectedNode">The currently selected node.</param>
/// <param name="isDragged">Determines if the node is currently being dragged.</param>
/// <param name="graphMousePos">The mouse position in the untransformed graph.</param>
/// <param name="renderDepth">The depth which is still rendered.</param>
public virtual void Draw(Graphics graphics, NodeViewData currentNode, NodeViewData selectedNode, bool isDragged, PointF graphMousePos, int renderDepth)
{
_node.Draw(graphics, this, currentNode ==null ? false : this.Node ==currentNode.Node, selectedNode ==null ? false : this.Node ==selectedNode.Node, isDragged, graphMousePos);
// draw children
if(renderDepth >0)
{
foreach(NodeViewData child in _children)
child.Draw(graphics, currentNode, selectedNode, isDragged, graphMousePos, renderDepth -1);
}
}
/// <summary> /// Called when the node gets updated. /// </summary> /// <param name="node">The node the subitem belongs to.</param> /// <param name="dc">The graphics object used for the update, NOT for drawing!</param> public abstract void Update(NodeViewData node, DrawingContext dc);
/// <summary> /// Called when the node is drawn. /// </summary> /// <param name="graphics">The graphics object used to draw the subitem.</param> /// <param name="nvd">The node view data of the node the subitem belongs to.</param> /// <param name="boundingBox">The bounding box of the subitem. Drawing is clipped to this.</param> public abstract void Draw(Graphics graphics, NodeViewData nvd, RectangleF boundingBox);
/// <summary>
/// Handles when a key is released.
/// </summary>
protected override void OnKeyUp(KeyEventArgs e)
{
switch(e.KeyCode)
{
// store when the control key is released
case(Keys.ControlKey):
_keyControlIsDown= false;
if(_copiedNode ==null && _movedNode ==null)
Cursor= Cursors.Hand;
break;
// store when the shift key is released
case(Keys.ShiftKey):
_keyShiftIsDown= false;
// update the drawn graph for dragging and duplicating
if(_movedNodeGraph !=null)
{
_movedNodeGraph.RenderDepth= _keyShiftIsDown ? int.MaxValue : 0;
Invalidate();
}
break;
// paste from clipboard
case(Keys.V):
_clipboardPasteMode= false;
// reset all the drag data
_copiedNode= null;
_movedNode= null;
_dragTargetNode= null;
_dragNodeDefaults= null;
_movedNodeGraph= null;
// redraw the graph
Invalidate();
break;
default: base.OnKeyUp(e); break;
}
}
/// <summary>
/// Handles when dropping a tree node on the view.
/// </summary>
private void BehaviorTreeView_DragDrop(object sender, DragEventArgs e)
{
//make sure the view is focused
Focus();
// get source node
TreeNode sourceNode= (TreeNode) e.Data.GetData("System.Windows.Forms.TreeNode");
NodeTag sourceNodeTag= (NodeTag)sourceNode.Tag;
// keep the current node position
_maintainNodePosition= _dragTargetNode;
_graphOrigin= _maintainNodePosition.DisplayBoundingBox.Location;
// check if we are dropping an event
if(_dragAttachMode ==NodeAttachMode.Event)
{
// add the event to the target node
Events.Event evnt= Brainiac.Design.Events.Event.Create(sourceNodeTag.NodeType, _dragTargetNode.Node);
evnt.OnPropertyValueChanged(false);
Nodes.Node.SubItemEvent sub= new Nodes.Node.SubItemEvent(evnt);
_dragTargetNode.Node.AddSubItem(sub);
_dragTargetNode.Node.BehaviorWasModified();
SelectedNode= _dragTargetNode;
_selectedNode.Node.SelectedSubItem= sub;
// call the ClickEvent event handler
if(ClickEvent !=null)
ClickEvent(_selectedNode);
LayoutChanged();
}
else if(_dragAttachMode !=NodeAttachMode.None)
{
// attach a new node to the target node
InsertNewNode(_dragTargetNode, _dragAttachMode, sourceNodeTag);
}
// reset drag stuff
_dragTargetNode= null;
_dragNodeDefaults= null;
_dragAttachMode= NodeAttachMode.None;
Invalidate();
}
/// <summary>
/// Handles when an event of a node is selected.
/// </summary>
/// <param name="node">The node whose event is selected.</param>
private void control_ClickEvent(NodeViewData node)
{
// if there is no subitem selected, use the properties of the node
if(node.Node.SelectedSubItem ==null || node.Node.SelectedSubItem.SelectableObject ==null)
{
PropertiesDock.InspectObject(node.Node);
}
// publish the properties of the subitem's selection object
else
{
PropertiesDock.InspectObject(node.Node.SelectedSubItem.SelectableObject);
}
}
/// <summary> /// Called when the node gets updated. /// </summary> /// <param name="node">The node the subitem belongs to.</param> /// <param name="graphics">The graphics object used for the update, NOT for drawing!</param> public abstract void Update(NodeViewData node, Graphics graphics);
/// <summary>
/// Handles when a node is double-clicked.
/// </summary>
/// <param name="node">The node that was double-clicked.</param>
private void control_DoubleClickNode(NodeViewData node)
{
}
/// <summary>
/// Handles when a tree node is dragged on the view.
/// </summary>
private void BehaviorTreeView_DragOver(object sender, DragEventArgs e)
{
// get the node we are dragging over
Point pt= PointToClient(new Point(e.X, e.Y));
NodeViewData nodeFound= _rootNode.IsInside(new PointF(pt.X, pt.Y));
// update the current node
if(nodeFound !=_currentNode)
{
_currentNode= nodeFound;
Invalidate();
}
// when we are moving on a node we must keep drawing as the ttach ode might change but not the node
else if(nodeFound !=null)
{
Invalidate();
}
// store the target node
_dragTargetNode= _currentNode;
// deny drop by default
e.Effect= DragDropEffects.None;
// make sure the correct drag attach mode is set
if(_dragTargetNode !=null)
{
if(_dragNodeDefaults is Nodes.Node && _dragAttachMode ==NodeAttachMode.Event)
_dragAttachMode= NodeAttachMode.None;
else if(_dragNodeDefaults is Events.Event && _dragAttachMode !=NodeAttachMode.Event)
_dragAttachMode= NodeAttachMode.Event;
}
// check if we are trying to drop a node on another one
if(_dragTargetNode !=null && (e.KeyState & 1/*left mouse button*/) >0 && _dragNodeDefaults is Nodes.Node)
{
e.Effect= DragDropEffects.Move;
}
// check if we are trying attach an event to a node
else if(_dragTargetNode !=null && (e.KeyState & 1/*left mouse button*/) >0 && _dragNodeDefaults is Events.Event && _dragTargetNode.Node.AcceptsEvents)
{
e.Effect= DragDropEffects.Move;
}
// update last know mouse position
_lastMousePosition= new PointF(pt.X, pt.Y);
}
/// <summary>
/// Creates a new NodeLayoutManager.
/// </summary>
/// <param name="edgePen">The pen which is used to draw the edges connecting the nodes.</param>
/// <param name="edgePenSubReferenced">The pen which is used to draw the edges connecting sub-referenced nodes.</param>
/// <param name="skipLabels">Defines if labels are drawn or not.</param>
/// <param name="rootNode">The root of the nodes shown in the view.</param>
internal NodeLayoutManager(NodeViewData rootNode, Pen edgePen, Pen edgePenSubReferenced, bool skipLabels)
{
_rootNodeLayout= rootNode;
_edgePen= edgePen;
_edgePenReadOnly= edgePenSubReferenced;
_skipLabels= skipLabels;
}
/// <summary>
/// Handles when the mouse is moved.
/// </summary>
protected override void OnMouseMove(MouseEventArgs e)
{
if(_lostFocus)
{
_lostFocus= false;
// update the last ouse position
_lastMousePosition= e.Location;
base.OnMouseMove(e);
return;
}
// returns the mouse under the mouse cursor
NodeViewData nodeFound= _rootNode.IsInside(e.Location);
// clear previously stored node which can cause problems when dragging to another view
_dragTargetNode= null;
// if a different node is the current one, update it
if(nodeFound !=_currentNode)
{
_currentNode= nodeFound;
// if enabled show the tooltip for the node
if(Settings.Default.ShowNodeToolTips)
{
if(_currentNode ==null)
{
toolTip.Hide(this);
}
else
{
if(_currentNode.Node.ToolTip !=string.Empty)
toolTip.Show(_currentNode.Node.ToolTip, this, new Point( (int)_currentNode.DisplayBoundingBox.X -20, (int)_currentNode.DisplayBoundingBox.Y -30 ));
}
}
Invalidate();
}
// check if we are currently dragging the graph
if(e.Button ==MouseButtons.Left && _lastMousePosition !=e.Location && !_keyControlIsDown && _copiedNode ==null)
{
_wasDragged= true;
// move the graph according to the last mouse position
_nodeLayoutManager.Offset= new PointF(_nodeLayoutManager.Offset.X - (_lastMousePosition.X - e.X), _nodeLayoutManager.Offset.Y - (_lastMousePosition.Y - e.Y));
Invalidate();
}
// check if we start duplicating an existing node step 1
else if(e.Button ==MouseButtons.Left && _keyControlIsDown && _lastMousePosition !=e.Location && _copiedNode ==null && _currentNode !=null && !(_currentNode.Node is BehaviorNode))
{
_copiedNode= _currentNode.Node;
// create the layout manager used to draw the graph
_movedNodeGraph= new NodeLayoutManager(_copiedNode.CloneBranch().CreateNodeViewData(null, _rootNode.RootBehavior), _nodeLayoutManager.EdgePen, _nodeLayoutManager.EdgePenReadOnly, true);
_movedNodeGraph.Scale= 0.3f;
_movedNodeGraph.RenderDepth= _keyShiftIsDown ? int.MaxValue : 0;
// use the existing node as the node defaults
_dragNodeDefaults= _copiedNode;
Invalidate();
}
// check if we are duplicating an existing node step 2
else if(e.Button ==MouseButtons.Left && _keyControlIsDown && _copiedNode !=null)
{
_movedNodeGraph.RenderDepth= _keyShiftIsDown ? int.MaxValue : 0;
_dragTargetNode= _currentNode;
Cursor= _currentNode ==null ? Cursors.No : Cursors.Arrow;
//Point movedGraphGraphPos= new Point(e.Location.X + _movedNodeGraph.Offset.X, e.Location.Y + _movedNodeGraph.Offset.Y /-2);
//_movedNodeGraph.Location= movedGraphGraphPos;
Invalidate();
}
// check if we start dragging an existing node step 1
else if(e.Button ==MouseButtons.Right && _lastMousePosition !=e.Location && _movedNode ==null && _currentNode !=null && !(_currentNode.Node is BehaviorNode) && (_keyShiftIsDown || _currentNode.Node.ParentCanAdoptChildren))
{
_movedNode= _currentNode.Node;
// create the layout manager used to draw the graph
_movedNodeGraph= new NodeLayoutManager(_movedNode.CloneBranch().CreateNodeViewData(null, _rootNode.RootBehavior), _nodeLayoutManager.EdgePen, _nodeLayoutManager.EdgePenReadOnly, true);
_movedNodeGraph.Scale= 0.3f;
_movedNodeGraph.RenderDepth= _keyShiftIsDown ? int.MaxValue : 0;
// use the existing node as the node defaults
_dragNodeDefaults= _movedNode;
Invalidate();
}
// check if we are dragging an existing node step 2
else if(e.Button ==MouseButtons.Right && _movedNode !=null)
{
_movedNodeGraph.RenderDepth= _keyShiftIsDown ? int.MaxValue : 0;
_dragTargetNode= _currentNode;
Cursor= _currentNode ==null ? Cursors.No : Cursors.Arrow;
Invalidate();
}
else if(_clipboardPasteMode)
{
_movedNodeGraph.RenderDepth= _keyShiftIsDown ? int.MaxValue : 0;
_dragTargetNode= _currentNode;
Cursor= _currentNode ==null ? Cursors.No : Cursors.Arrow;
Invalidate();
}
// update the last ouse position
_lastMousePosition= e.Location;
base.OnMouseMove(e);
}
/// <summary>
/// Handles when a node is double-clicked.
/// </summary>
/// <param name="node">The node that was double-clicked.</param>
private void control_DoubleClickNode(NodeViewData node)
{
}
/// <summary>
/// Creates a new view for a given node.
/// </summary>
/// <param name="parent">The parent of the new NodeViewData.</param>
/// <param name="rootBehavior">The behaviour which is the root of the graph the given node is shown in.</param>
/// <param name="node">The node the view is created for.</param>
public NodeViewData(NodeViewData parent, BehaviorNode rootBehavior, Node node)
{
Debug.Check(rootBehavior !=null);
_parent= parent;
_rootBehavior= rootBehavior;
_node= node;
if(parent !=null)
WasModified= parent.WasModified;
_node.WasModified+= new Node.WasModifiedEventDelegate(node_WasModified);
}
/// <summary>
/// Draws the graph.
/// </summary>
/// <param name="graphics">The graphics object we want to draw to.</param>
/// <param name="currentNode">The node the mouse is currently hovering over.</param>
/// <param name="selectedNode">The node which is currently selected.</param>
/// <param name="graphMousePos">The mouse's position in the graph.</param>
internal void DrawGraph(Graphics graphics, NodeViewData currentNode, NodeViewData selectedNode, PointF graphMousePos)
{
// setup drawing
graphics.InterpolationMode= System.Drawing.Drawing2D.InterpolationMode.HighQualityBilinear;
graphics.SmoothingMode= System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
graphics.Transform= new System.Drawing.Drawing2D.Matrix(_scale, 0.0f, 0.0f, _scale, _offset.X, _offset.Y);
// update display bounding boxes
_rootNodeLayout.UpdateDisplay(_offset.X, _offset.Y, _scale);
// draw comment backgrounds
if(!_skipLabels)
_rootNodeLayout.DrawCommentBackground(graphics, _renderDepth, _padding);
// draw the edges
if(_edgePen !=null && _renderDepth >0)
_rootNodeLayout.DrawEdges(graphics, _edgePen, _edgePenReadOnly, _renderDepth -1);
// draw the nodes
_rootNodeLayout.Draw(graphics, currentNode, selectedNode, _skipLabels, graphMousePos, _renderDepth);
// draw comment text
if(!_skipLabels)
_rootNodeLayout.DrawCommentText(graphics, _renderDepth);
// draw last mouse pos
//e.Graphics.DrawRectangle(Pens.Red, graphMousePos.X -1.0f, graphMousePos.Y -1.0f, 2.0f, 2.0f);
}
public NodeViewDataReferencedBehavior(NodeViewData parent, Nodes.BehaviorNode rootBehavior, Nodes.ReferencedBehaviorNode node) : base(parent, rootBehavior, (Node)node)
{
}