/// <summary>
/// Updates the given cell state.
/// </summary>
/// <param name="state"></param>
public void UpdateCellState(mxCellState state, mxCellState source, mxCellState target)
{
state.AbsoluteOffset.X = 0;
state.AbsoluteOffset.Y = 0;
state.Origin.X = 0;
state.Origin.Y = 0;
state.Length = 0;
mxIGraphModel model = graph.Model;
mxCellState pState = GetState(model.GetParent(state.Cell));
if (pState != null)
{
state.Origin.X += pState.Origin.X;
state.Origin.Y += pState.Origin.Y;
}
mxPoint offset = graph.GetChildOffsetForCell(state.Cell);
if (offset != null)
{
state.Origin.X += offset.X;
state.Origin.Y += offset.Y;
}
mxGeometry geo = graph.GetCellGeometry(state.Cell);
if (geo != null)
{
if (!model.IsEdge(state.Cell))
{
mxPoint origin = state.Origin;
offset = geo.Offset;
if (offset == null)
{
offset = EMPTY_POINT;
}
if (geo.Relative && pState != null)
{
if (model.IsEdge(pState.Cell))
{
mxPoint orig = GetPoint(pState, geo);
if (orig != null)
{
origin.X += (orig.X / scale) - pState.Origin.X - translate.X;
origin.Y += (orig.Y / scale) - pState.Origin.Y - translate.Y;
}
}
else
{
origin.X += geo.X * pState.Width / scale + offset.X;
origin.Y += geo.Y * pState.Height / scale + offset.Y;
}
}
else
{
state.AbsoluteOffset = new mxPoint(scale * offset.X,
scale * offset.Y);
origin.X += geo.X;
origin.Y += geo.Y;
}
}
state.X = scale * (translate.X + state.Origin.X);
state.Y = scale * (translate.Y + state.Origin.Y);
state.Width = scale * geo.Width;
state.Height = scale * geo.Height;
if (model.IsVertex(state.Cell))
{
UpdateVertexState(state, geo);
}
if (model.IsEdge(state.Cell))
{
UpdateEdgeState(state, geo, source, target);
}
}
}
/// <summary>
/// Validates the bounds of the given parent's child using the given parent
/// state as the origin for the child. The validation is carried out
/// recursively for all non-collapsed descendants.
/// </summary>
/// <param name="parentState">Cell state for the given parent.</param>
/// <param name="cell">Cell for which the bounds in the state should be updated.</param>
public void ValidateBounds(mxCellState parentState, Object cell)
{
mxIGraphModel model = graph.Model;
mxCellState state = GetState(cell, true);
if (state != null)
{
if (!graph.IsCellVisible(cell))
{
RemoveState(cell);
}
else if (parentState != null)
{
state.AbsoluteOffset.X = 0;
state.AbsoluteOffset.Y = 0;
state.Origin = new mxPoint(parentState.Origin.X,
parentState.Origin.Y);
mxGeometry geo = graph.GetCellGeometry(cell);
if (geo != null)
{
if (!model.IsEdge(cell))
{
mxPoint origin = state.Origin;
mxPoint offset = geo.Offset;
if (offset == null)
{
offset = EMPTY_POINT;
}
if (geo.Relative)
{
origin.X += geo.X * parentState.Width /
Scale + offset.X;
origin.Y += geo.Y * parentState.Height /
Scale + offset.Y;
}
else
{
state.AbsoluteOffset = new mxPoint(
scale * offset.X,
scale * offset.Y);
origin.X += geo.X;
origin.Y += geo.Y;
}
}
// Updates the cell state's bounds
state.X = scale * (translate.X + state.Origin.X);
state.Y = scale * (translate.Y + state.Origin.Y);
state.Width = scale * geo.Width;
state.Height = scale * geo.Height;
if (model.IsVertex(cell))
{
UpdateVertexLabelOffset(state);
}
}
}
// Applies child offset to origin
mxPoint childOffset = graph.GetChildOffsetForCell(cell);
if (childOffset != null)
{
state.Origin.X += childOffset.X;
state.Origin.Y += childOffset.Y;
}
}
// Recursively validates the child bounds
if (state != null &&
!graph.IsCellCollapsed(cell))
{
int childCount = model.GetChildCount(cell);
for (int i = 0; i < childCount; i++)
{
ValidateBounds(state, model.GetChildAt(cell, i));
}
}
}