/// <summary>
/// Handler class which handles with point elements
/// </summary>
/// <param name="element"></param>
/// <param name="hOperator">Handler operator</param>
/// <param name="point">Point element to be handled</param>
public PointHandler(ShapeElement element, HandlerOperator hOperator,
PointElement point) : base(element, hOperator)
{
this.FillColor = Color.BlueViolet;
this.linkedPoint = point;
this.element = element;
this.RePosition(element);
}
/// <summary>
/// Handler class which handles with adding new point operation
/// </summary>
/// <param name="element">Current element</param>
/// <param name="hndlOperator">Handler Operator</param>
/// <param name="point">New point</param>
/// <param name="index">index of the handler </param>
public NewPointHandler(ShapeElement element, HandlerOperator hndlOperator,
PointElement point, int index) : base(element, hndlOperator)
{
this.element = element;
Index = index;
this.FillColor = Color.YellowGreen;
this.linkedPoint = point;
this.RePosition(element);
}
/// <summary>
/// Returns Cursor according to handler operator value
/// </summary>
/// <param name="hOperator">HandlerOperator</param>
/// <returns><see cref="System.Windows.Forms.Cursor"/></returns>
public static Cursor GetCursor(HandlerOperator hOperator)
{
if (hOperator == HandlerOperator.NewPoint || hOperator == HandlerOperator.Polygon ||
hOperator == HandlerOperator.Rotation)
{
return(Cursors.SizeAll);
}
else if (hOperator == HandlerOperator.Default)
{
return(Cursors.Hand);
}
else if (hOperator == HandlerOperator.RedimNorthWest)
{
return(Cursors.SizeNWSE);
}
else if (hOperator == HandlerOperator.RedimNorth)
{
return(Cursors.SizeNS);
}
else if (hOperator == HandlerOperator.RedimNorthEast)
{
return(Cursors.SizeNESW);
}
else if (hOperator == HandlerOperator.RedimEast)
{
return(Cursors.SizeWE);
}
else if (hOperator == HandlerOperator.RedimSouthEast)
{
return(Cursors.SizeNWSE);
}
else if (hOperator == HandlerOperator.RedimSouth)
{
return(Cursors.SizeNS);
}
else if (hOperator == HandlerOperator.RedimSouthWest)
{
return(Cursors.SizeNESW);
}
else if (hOperator == HandlerOperator.RedimWest)
{
return(Cursors.SizeWE);
}
else if (hOperator == HandlerOperator.Zoom)
{
return(Cursors.SizeNWSE);
}
return(Cursors.Default);
}
/// <summary>
/// Determines whether point(x,y) is contained by this handler or not
/// </summary>
/// <param name="x">x region of the point</param>
/// <param name="y">y region of the point</param>
/// <returns>True if contains, false if not</returns>
public HandlerOperator IsOver(int x, int y)
{
HandlerOperator hOperator = HandlerOperator.None;
foreach (Handler handler in this.handlers)
{
hOperator = handler.IsOver(x, y);
if (hOperator != HandlerOperator.None)
{
return(hOperator);
}
}
if (this.Contains(x, y))
{
return(HandlerOperator.Default);
}
return(HandlerOperator.None);
}
/// <summary>
/// Convert <see cref="DrawingBoard2.HandlerOperator"/> enum value to
/// <see cref="DrawingBoard2.Direction"/>enum value
/// </summary>
/// <param name="hOperator">Handler operation value</param>
/// <returns>Direction enum value</returns>
public static Direction ToDirection(HandlerOperator hOperator)
{
if (hOperator == HandlerOperator.RedimEast)
{
return(Direction.East);
}
else if (hOperator == HandlerOperator.RedimNorth)
{
return(Direction.North);
}
else if (hOperator == HandlerOperator.RedimNorthEast)
{
return(Direction.NorthEast);
}
else if (hOperator == HandlerOperator.RedimNorthWest)
{
return(Direction.NorthWest);
}
else if (hOperator == HandlerOperator.RedimSouth)
{
return(Direction.South);
}
else if (hOperator == HandlerOperator.RedimSouthEast)
{
return(Direction.SouthEast);
}
else if (hOperator == HandlerOperator.RedimSouthWest)
{
return(Direction.SouthWest);
}
else if (hOperator == HandlerOperator.RedimWest)
{
return(Direction.West);
}
return(Direction.West);
}
/// <summary>
/// Handler class which handles with rotation of shape elements
/// </summary>
/// <param name="element"></param>
/// <param name="hOperator"></param>
public RotationHandler(ShapeElement element, HandlerOperator hOperator)
: base(element, hOperator)
{
this.FillColor = Color.Black;
}
/// <summary>
/// Base handler class
/// </summary>
/// <param name="shape">Shape element to be handled</param>
/// <param name="hOperator">Handler Operator</param>
public Handler(ShapeElement shape, HandlerOperator hOperator)
{
this.handleOperator = hOperator;
this.RePosition(shape);
}
