private void OnMouseMove(object sender, MouseEventArgs e)
{
if (IsDisposed)
{
return;
}
if (_newSegCtl != null)
{
_newSegCtl.OnMouseMove(sender, e);
return;
}
if (_containerPanel.EditMode) // && object.ReferenceEquals(this, sender))
{
Point newMousePosition = MousePosition;
if (e.Button != MouseButtons.Left)
{
Point ptCtlLoc = PointToClient(newMousePosition);
// No Left button. Not trying to drag. Just set cursor
Rectangle rcEntire = new Rectangle(Point.Empty, Size);
if (rcEntire.Contains(ptCtlLoc))
{
_containerPanel.Cursor = Cursors.SizeAll;
}
else
{
_containerPanel.Cursor = Cursors.Default;
}
}
else
{
// Get Head in panel coordinates
int x = newMousePosition.X - _lastMousePosition.X;
int y = newMousePosition.Y - _lastMousePosition.Y;
if (x == 0 && y == 0)
{
return;
}
// Which Drag are we trying to do?
bool bMovingVertical = Math.Abs(x) < Math.Abs(y);
bool bInLine = bMovingVertical == Vertical;
switch (DragMode)
{
case eDrag.None:
return;
case eDrag.BodyClick:
case eDrag.HeadClick:
case eDrag.TailClick:
// Not dragging yet
// Have we dragged far enough
int totalPixDragDistance = (x * x + y * y);
if (totalPixDragDistance < 5 || Math.Abs(x) == Math.Abs(y))
{
// Not far enough or indeterminatant
return;
}
if (bInLine)
{
_segMoves = new SMPathSegment[] { _pathSeg };
DragMode = eDrag.Extending;
}
break;
}
// Not in line move
SMPathSegment segPrevious = _pathSeg.Previous;;
SMPathSegment segNext = _pathSeg.Next;;
switch (DragMode)
{
case eDrag.BodyClick:
if (segPrevious == null)
{
DragMode = eDrag.None;
_flowItem.ChangeExit(FirstPathSeg, x, y);
_ctlBase.RebuildSegment(FirstPathSeg);
return;
}
_segMoves = new SMPathSegment[] { segPrevious, segNext };
DragMode = eDrag.Extending;
break;
case eDrag.HeadClick:
if (IsLast)
{
CreateNewSegment(eDrag.Extending, x, y);
}
else
{
// Same as moving the body
_segMoves = new SMPathSegment[] { segPrevious, segNext };
DragMode = eDrag.Extending;
}
break;
case eDrag.TailClick:
_segMoves = new SMPathSegment[] { segPrevious, segNext };
DragMode = eDrag.Extending;
break;
}
//
if (DragMode == eDrag.Extending)
{
DoExtensions(x, y);
_lastMousePosition = newMousePosition;
}
}
}
}
