/// <summary>
///
/// </summary>
/// <param name="e"></param>
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
// if (m_bMouseMoveLocked == true)
// return;
Point p = new Point(e.X, e.Y);
Node oMouseMoveNode = GetSubObjectAtPoint(p) as Node;
// get the mouse down info and the coordinates, if we are starting to move mouse over the clicked node
// then start the drag drop operation
if (AutoDragDrop == true)
{
if (m_oButtonClicked == MouseButtons.Left && m_oDragNode == null && oMouseMoveNode != null && m_bDragDropNode == false)
{
if (Math.Abs(m_oMouseClickPoint.X - p.X) > 3 || Math.Abs(m_oMouseClickPoint.Y - p.Y) > 3)
{
if (oMouseMoveNode.AllowDrag == true)
{
m_bDragDropNode = true;
m_oDragNode = oMouseMoveNode;
if (m_oDragNode != null)
{
m_oDragDropPop = new DragDropPopup(m_oDragNode);
m_oDragDropPop.Show();
this.Focus();
}
}
}
}
}
#region dragdrop node drop test
if (m_bDragDropNode == true && m_oDragDropPop != null)
{
m_oDragDropPop.CanDrop = false;
m_oDragDropPop.Left = this.PointToScreen(p).X + 10;
m_oDragDropPop.Top = this.PointToScreen(p).Y + 10;
// get the drop object and check if we can drop it here
// try to find the group or node object and set the object to the property window
Node oCanDropNode = this.GetSubObjectAtPoint(p) as Node;
if (oCanDropNode != null)
{
if (oCanDropNode.AllowDrop == true)
{
if (m_oDragNode != null && m_oDragNode.IsSomeParent(oCanDropNode) == false)
m_oDragDropPop.CanDrop = true;
}
else
m_oDragDropPop.CanDrop = false;
}
if (oCanDropNode != null && oCanDropNode.IsExpanded == false)
{
// start the expand timer
m_oTimerExpandNode = oCanDropNode;
System.Windows.Forms.Timer timer = new System.Windows.Forms.Timer();
timer.Interval = 800;
timer.Tick += new EventHandler(this.ExpandTimerTick);
timer.Enabled = true;
}
m_oDragDropPop.Refresh();
}
#endregion
#region dragdrop autoscroll
if (Controls.Contains(m_oScrollBar) == true && m_oDragNode != null)
{
if (p.Y < 10 && m_bDragScrollDownRunning == false)
{
if (m_oDragScrollThread != null)
try
{
m_oDragScrollThread.Abort();
}
catch
{
}
m_oDragScrollThread = new Thread(new ThreadStart(this.OnDragScrollDown));
m_oDragScrollThread.Start();
}
else if (p.Y > this.Height - 10 && m_bDragScrollUpRunning == false)
{
if (m_oDragScrollThread != null)
try
{
m_oDragScrollThread.Abort();
}
catch
{
}
m_oDragScrollThread = new Thread(new ThreadStart(this.OnDragScrollUp));
m_oDragScrollThread.Start();
}
else
{
// if the mouse is outside the scrolling area and the scrolling thread is running stop the scrolling
if (m_oDragScrollThread != null)
try
{
m_oDragScrollThread.Abort();
}
catch
{
}
m_bDragScrollDownRunning = false;
m_bDragScrollUpRunning = false;
}
}
#endregion
#region Node dragdrop structure creation and dragdrop check
if (AutoDragDrop == true)
{
if (oMouseMoveNode != null)
{
if (m_oDragNode != null && oMouseMoveNode != m_oDragNode)
{
// we are not dragging, just hightlight the node
if (m_bDragDropNode == true)
{
// we are in the dragging mode, get the node's rectangle and do some more calculations and
// operations here
Rectangle oRect = GetNodeRect(oMouseMoveNode);
// test the area where we are with the actual point of drag.
if (p.Y >= oRect.Top && p.Y < oRect.Top + ((float) oRect.Height / 2.0))
{
if (p.X > m_oMouseClickPoint.X + 3)
// we are in the upper part of the node, but in the right side, drop under
DragDropNode = new NodeDragDrop(m_oDragNode, oMouseMoveNode, NodeDropMode.DropUnder);
else
// we are in the upper part of the node
DragDropNode = new NodeDragDrop(m_oDragNode, oMouseMoveNode, NodeDropMode.DropInfront);
}
else if (p.Y >= oRect.Top + ((float) oRect.Height / 2.0) && p.Y <= oRect.Bottom)
{
// we are in the lower part of the node
if (p.X > m_oMouseClickPoint.X + 3)
// test the X coordinate, if we are in the right from the pop, then behave in that way
DragDropNode = new NodeDragDrop(m_oDragNode, oMouseMoveNode, NodeDropMode.DropUnder);
else
// test the X coordinate, if we are in the right from the pop, then behave in that way
DragDropNode = new NodeDragDrop(m_oDragNode, oMouseMoveNode, NodeDropMode.DropAfter);
}
}
}
}
}
#endregion
HighlightedNode = null;
#region search for the node, if node found, highlight it
if (this.Style.TrackNodeHover == true)
{
foreach (Rectangle r in m_mapRectToSubItem.Keys)
{
if (r.Contains(e.X, e.Y) == false)
continue;
Node oNode = m_mapRectToSubItem[r] as Node;
if (oNode == null)
{
base.OnMouseMove(e);
return;
}
if (this.HighlightedNode == oNode)
{
base.OnMouseMove(e);
InvokeNodeMouseMove(e, oNode);
return;
}
this.HighlightedNode = oNode;
Invalidate();
if (this.MouseOverNode != null && this.MouseOverNode != oNode)
InvokeNodeMouseLeave(MouseOverNode);
if (this.MouseOverNode != oNode)
{
this.MouseOverNode = oNode;
InvokeNodeMouseEnter(MouseOverNode);
}
base.OnMouseMove(e);
InvokeNodeMouseMove(e, oNode);
return;
}
}
else
{
foreach (Rectangle r in m_mapRectToSubItem.Keys)
{
if (r.Contains(e.X, e.Y) == false)
continue;
Node oNode = m_mapRectToSubItem[r] as Node;
if (oNode == null)
{
base.OnMouseMove(e);
return;
}
if (this.MouseOverNode != null && this.MouseOverNode != oNode)
InvokeNodeMouseLeave(MouseOverNode);
if (this.MouseOverNode != oNode)
{
this.MouseOverNode = oNode;
InvokeNodeMouseEnter(MouseOverNode);
}
base.OnMouseMove(e);
InvokeNodeMouseMove(e, oNode);
Invalidate();
return;
}
}
#endregion
bool bInvalidate = false;
HighlightedNode = null;
if (MouseOverNode != null)
{
InvokeNodeMouseLeave(MouseOverNode);
bInvalidate = true;
}
MouseOverNode = null;
if (bInvalidate == true)
Invalidate();
}
protected override void OnMouseLeave(EventArgs e)
{
base.OnMouseLeave(e);
if (m_oDragDropPop != null)
{
m_oDragDropPop.Hide();
m_oDragDropPop.Dispose();
}
ClearDesignHighlight();
ClearHover();
m_bFocus = false;
if (MouseOverNode != null)
InvokeNodeMouseLeave(MouseOverNode);
MouseOverNode = null;
HighlightedNode = null;
m_oDragOverNode = null;
m_bDragDropNode = false;
m_oDragNode = null;
DragDropNode = null;
m_oButtonClicked = System.Windows.Forms.MouseButtons.None;
Invalidate();
}
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (m_oDragDropPop != null)
{
m_oDragDropPop.Hide();
m_oDragDropPop.Dispose();
}
// check the place, get the object, its popup menu and show it
Component oComponent = this.GetSubObjectAtPoint(new Point(e.X, e.Y));
if (oComponent is Node)
InvokeNodeMouseUp(e, oComponent as Node);
// flag object
if (this.Flags == true && IsNodeFlag(new Point(e.X, e.Y)) == true)
{
Node oNode = GetNodeByItemFlag(GetNodeFlagRect(new Point(e.X, e.Y)));
InvokeNodeFlagMouseUp(e, oNode);
}
#region droping at node
Node oDropNode = oComponent as Node;
string key = null;
if (m_oDragNode != null)
key = m_oDragNode.Key;
if (oDropNode != null && oDropNode.AllowDrop == true)
{
// perform the drop of the node
if (m_bDragDropNode == true && oDropNode != null && oDropNode != m_oDragNode)
{
Node oCopyNode = m_oDragNode;
// check where we are dropping, we can test the TreeView's nodedrop variables
if (DragDropNode != null
&& DragDropNode.NodeDropMode == NodeDropMode.DropUnder)
{
// drop at the node
// add the node to the new parent holder
oCopyNode.TreeView = oDropNode.TreeView;
oCopyNode.NodeMoving = true;
if (oCopyNode.IsSomeParent(oDropNode) == false)
{
InvokeBeforeNodePositionChange(oCopyNode);
m_oDragNode.Remove();
oCopyNode.SetParent(oDropNode);
oDropNode.Nodes.Insert(0, oCopyNode);
InvokeAfterNodePositionChange(oCopyNode);
oDropNode.IsExpanded = true;
}
oCopyNode.NodeMoving = false;
foreach (Node oSubNode in oCopyNode.Nodes)
oSubNode.m_nCollectionOrder = oSubNode.YOrder;
}
else if (DragDropNode != null
&& DragDropNode.NodeDropMode == NodeDropMode.DropAfter)
{
// we are droping the node behind the drop node selected
Node oNode = DragDropNode.DropNode;
if (oNode.Collection.Count - 1 == oNode.Index)
{
// add the node to the new parent holder
oCopyNode.TreeView = oNode.TreeView;
oCopyNode.NodeMoving = true;
if (oCopyNode.IsSomeParent(oNode) == false)
{
InvokeBeforeNodePositionChange(oCopyNode);
m_oDragNode.Remove();
oCopyNode.SetParent(oNode.Parent);
oNode.Collection.Add(oCopyNode);
InvokeAfterNodePositionChange(oCopyNode);
oDropNode.IsExpanded = true;
}
oCopyNode.NodeMoving = false;
}
else
{
// add the node to the new parent holder
oCopyNode.TreeView = oNode.TreeView;
oCopyNode.NodeMoving = true;
if (oCopyNode.IsSomeParent(oNode) == false)
{
InvokeBeforeNodePositionChange(oCopyNode);
m_oDragNode.Remove();
oCopyNode.SetParent(oNode.Parent);
oNode.Collection.Insert(oNode.Index + 1, oCopyNode);
InvokeAfterNodePositionChange(oCopyNode);
oDropNode.IsExpanded = true;
}
oCopyNode.NodeMoving = false;
}
}
else if (DragDropNode != null
&& DragDropNode.NodeDropMode == NodeDropMode.DropInfront)
{
// we are droping the node infront the drop node selected
Node oNode = DragDropNode.DropNode;
// add the node to the new parent holder
oCopyNode.TreeView = oNode.TreeView;
oCopyNode.NodeMoving = true;
if (oCopyNode.IsSomeParent(oNode) == false)
{
InvokeBeforeNodePositionChange(oCopyNode);
m_oDragNode.Remove();
oCopyNode.SetParent(oNode.Parent);
oNode.Collection.Insert(oNode.Index, oCopyNode);
InvokeAfterNodePositionChange(oCopyNode);
oDropNode.IsExpanded = true;
}
oCopyNode.NodeMoving = false;
}
foreach (Node oCollectionNode in oCopyNode.Collection)
oCollectionNode.m_nCollectionOrder = oCollectionNode.Index;
}
}
if (m_oDragNode != null)
{
ClearNodeKey(key);
m_oDragNode.Key = key;
}
#endregion
m_oButtonClicked = MouseButtons.None;
m_bDragDropNode = false;
DragDropNode = null;
m_oDragNode = null;
Invalidate();
}
