/// <summary>
/// Get currently dragging edge or null
/// if currently no edige is being dragged.</summary>
/// <returns></returns>
public DragEdge GetDraggingEdge()
{
if (!m_isConnecting)
{
return(null);
}
var d2dControl = this.AdaptedControl as D2dAdaptableControl;
D2dGraphics gfx = d2dControl.D2dGraphics;
var invXform = Matrix3x2F.Invert(gfx.Transform);
var edge = new DragEdge();
edge.FromNode = m_draggingContext.ActualFromNode();
edge.FromRoute = m_draggingContext.ActualFromRoute(edge.FromNode);
edge.ToNode = m_draggingContext.ActualToNode();
edge.ToRoute = m_draggingContext.ActualToRoute(edge.ToNode);
edge.Label = m_draggingContext.ExistingEdge != null ? m_draggingContext.ExistingEdge.Label : null;
edge.StartPoint = edge.FromRoute == null?Matrix3x2F.TransformPoint(invXform, m_edgeDragPoint) : m_draggingContext.FromRoutePos;
edge.EndPoint = edge.ToRoute == null?Matrix3x2F.TransformPoint(invXform, m_edgeDragPoint) : m_draggingContext.ToRoutePos;
return(edge);
}
private Rect ComputeBottomLayDown(DragEdge dragEdge)
{
int bl = PaddingLeft, bt = PaddingTop;
int br, bb;
if (dragEdge == DragEdge.Right) {
bl = MeasuredWidth - mDragDistance;
} else if (dragEdge == DragEdge.Bottom) {
bt = MeasuredHeight - mDragDistance;
}
if (dragEdge == DragEdge.Left || dragEdge == DragEdge.Right) {
br = bl + mDragDistance;
bb = bt + MeasuredHeight;
} else {
br = bl + MeasuredWidth;
bb = bt + mDragDistance;
}
return new Rect(bl, bt, br, bb);
}
protected bool IsViewTotallyFirstShowed(View child, Rect relativePosition, DragEdge edge, int surfaceLeft,
int surfaceTop, int surfaceRight, int surfaceBottom)
{
if (mShowEntirely[child]) return false;
int childLeft = relativePosition.Left;
int childRight = relativePosition.Right;
int childTop = relativePosition.Top;
int childBottom = relativePosition.Bottom;
bool r = false;
if (mShowMode == ShowMode.LayDown) {
if ((edge == DragEdge.Right && surfaceRight <= childLeft)
|| (edge == DragEdge.Left && surfaceLeft >= childRight)
|| (edge == DragEdge.Top && surfaceTop >= childBottom)
|| (edge == DragEdge.Bottom && surfaceBottom <= childTop)) r = true;
} else if (mShowMode == ShowMode.PullOut) {
if ((edge == DragEdge.Right && childRight <= Width)
|| (edge == DragEdge.Left && childLeft >= PaddingLeft)
|| (edge == DragEdge.Top && childTop >= PaddingTop)
|| (edge == DragEdge.Bottom && childBottom <= Height)) r = true;
}
return r;
}
protected bool IsViewShowing(View child, Rect relativePosition, DragEdge availableEdge, int surfaceLeft,
int surfaceTop, int surfaceRight, int surfaceBottom)
{
int childLeft = relativePosition.Left;
int childRight = relativePosition.Right;
int childTop = relativePosition.Top;
int childBottom = relativePosition.Bottom;
if (mShowMode == ShowMode.LayDown) {
switch (availableEdge) {
case DragEdge.Right:
if (surfaceRight > childLeft && surfaceRight <= childRight) {
return true;
}
break;
case DragEdge.Left:
if (surfaceLeft < childRight && surfaceLeft >= childLeft) {
return true;
}
break;
case DragEdge.Top:
if (surfaceTop >= childTop && surfaceTop < childBottom) {
return true;
}
break;
case DragEdge.Bottom:
if (surfaceBottom > childTop && surfaceBottom <= childBottom) {
return true;
}
break;
}
} else if (mShowMode == ShowMode.PullOut) {
switch (availableEdge) {
case DragEdge.Right:
if (childLeft <= Width && childRight > Width) return true;
break;
case DragEdge.Left:
if (childRight >= PaddingLeft && childLeft < PaddingLeft) return true;
break;
case DragEdge.Top:
if (childTop < PaddingTop && childBottom >= PaddingTop) return true;
break;
case DragEdge.Bottom:
if (childTop < Height && childTop >= PaddingTop) return true;
break;
}
}
return false;
}
public void Open(bool smooth, bool notify, DragEdge edge)
{
CurrentDragEdge = edge;
Open(smooth, notify);
}
public void Open(bool smooth, DragEdge edge)
{
CurrentDragEdge = edge;
Open(smooth, true);
}
public void Open(DragEdge edge)
{
CurrentDragEdge = edge;
Open(true, true);
}