public override object ConvertTo(ITypeDescriptorContext context,
CultureInfo culture,
object value,
Type destinationType)
{
if (culture == null)
{
culture = CultureInfo.CurrentCulture;
}
// LAMESPEC: "The default implementation calls the object's
// ToString method if the object is valid and if the destination
// type is string." MS does not behave as per the specs.
// Oh well, we have to be compatible with MS.
if (value is Point_)
{
Point_ point = (Point_)value;
if (destinationType == typeof(string))
{
return(point.X.ToString(culture) + culture.TextInfo.ListSeparator
+ " " + point.Y.ToString(culture));
}
else if (destinationType == typeof(InstanceDescriptor))
{
ConstructorInfo ctor = typeof(Point_).GetConstructor(new Type[] { typeof(int), typeof(int) });
return(new InstanceDescriptor(ctor, new object[] { point.X, point.Y }));
}
}
return(base.ConvertTo(context, culture, value, destinationType));
}
// -----------------------
// Public Constructors
// -----------------------
/// <summary>
/// Rectangle Constructor
/// </summary>
///
/// <remarks>
/// Creates a Rectangle_ from Point and Size values.
/// </remarks>
public Rectangle_(Point_ location, Size_ size)
{
x = location.X;
y = location.Y;
width = size.Width;
height = size.Height;
}
public bool IsVisible(Point_ point)
{
bool result;
Status status = GDIPlus.GdipIsVisibleRegionPointI(nativeRegion, point.X, point.Y,
IntPtr.Zero, out result);
GDIPlus.CheckStatus(status);
return(result);
}
public bool IsVisible(Point_ point, Graphics g)
{
IntPtr ptr = (g == null) ? IntPtr.Zero : g.NativeObject;
bool result;
Status status = GDIPlus.GdipIsVisibleRegionPointI(nativeRegion, point.X, point.Y,
ptr, out result);
GDIPlus.CheckStatus(status);
return(result);
}
// -----------------------
// Public Constructors
// -----------------------
/// <summary>
/// Size Constructor
/// </summary>
///
/// <remarks>
/// Creates a Size from a Point value.
/// </remarks>
public Size_(Point_ pt)
{
width = pt.X;
height = pt.Y;
}
/// <summary>
/// Offset Method
/// </summary>
///
/// <remarks>
/// Moves the Rectangle_ a specified distance.
/// </remarks>
public void Offset(Point_ pos)
{
x += pos.X;
y += pos.Y;
}
/// <summary>
/// Contains Method
/// </summary>
///
/// <remarks>
/// Checks if a Point lies within this Rectangle.
/// </remarks>
public bool Contains(Point_ pt)
{
return(Contains(pt.X, pt.Y));
}
public static Point_ Subtract(Point_ pt, Size sz)
{
return(new Point_(pt.X - sz.Width, pt.Y - sz.Height));
}
public void Offset(Point_ p)
{
Offset(p.X, p.Y);
}
public static Point_ Add(Point_ pt, Size sz)
{
return(new Point_(pt.X + sz.Width, pt.Y + sz.Height));
}