internal void AutoPositionShape(EntityTypeShape entityTypeShape)
{
//determine initial nextX/nextY position and if we're going to start adding horizontally or vertically...
if (_nextShapeX == null || _nextShapeY == null)
{
decimal diagramWidth = DiagramWidth;
decimal diagramHeight = DiagramHeight;
if (diagramHeight > diagramWidth)
{
_addVertical = true;
_nextShapeX = diagramWidth + .75M;
_nextShapeY = .75M;
_maxY = diagramHeight;
}
else
{
_addVertical = false;
_nextShapeX = .75M;
_nextShapeY = diagramHeight + .75M;
_maxX = diagramWidth;
}
}
//set position and size for the current element
entityTypeShape.Top = _nextShapeY.Value;
entityTypeShape.Left = _nextShapeX.Value;
entityTypeShape.Width = 1.5M;
entityTypeShape.Height = 2M;
//increase nextx/nexty depending on if we're adding horizontally or vertically
if (_addVertical)
{
_nextShapeY = _nextShapeY.Value + 2.5M;
if (_nextShapeY > _maxY)
{
_nextShapeY = null;
}
}
else
{
_nextShapeX = _nextShapeX.Value + 2M;
if (_nextShapeX > _maxX)
{
_nextShapeX = null;
}
}
}
/// <summary>
/// Adds an entity type shape to the diagram
/// </summary>
/// <param name="entityType">Model entity type to add to the diagram.</param>
/// <returns>An EntityTypeShape object</returns>
public EntityTypeShape AddEntityTypeShape(ModelEntityType entityType)
{
if (entityType == null)
{
throw new ArgumentNullException("entityType");
}
EntityTypeShape ets = EntityTypeShapes.FirstOrDefault(es => es.EntityType == entityType);
if (ets == null)
{
ets = new EntityTypeShape(ParentFile, this, entityType);
ets.Removed += new EventHandler(ets_Removed);
_entityTypeShapes.Add(ets.EntityTypeName, ets);
}
return(ets);
}
