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//---------------------------------------------------------------------------
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
// Description: Floater element.
//
//---------------------------------------------------------------------------
using System.ComponentModel;
using MS.Internal;
using MS.Internal.PtsHost.UnsafeNativeMethods; // PTS restrictions
namespace System.Windows.Documents
{
/// <summary>
/// Floater element
/// </summary>
public class Floater : AnchoredBlock
{
//-------------------------------------------------------------------
//
// Constructors
//
//-------------------------------------------------------------------
#region Constructors
/// <summary>
/// Static ctor. Initializes property metadata.
/// </summary>
static Floater()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(Floater), new FrameworkPropertyMetadata(typeof(Floater)));
}
/// <summary>
/// Initialized the new instance of a Floater
/// </summary>
public Floater() : this(null, null)
{
}
/// <summary>
/// Initialized the new instance of a Floater specifying a Block added
/// to a Floater as its first child.
/// </summary>
/// <param name="childBlock">
/// Block added as a first initial child of the Floater.
/// </param>
public Floater(Block childBlock) : this(childBlock, null)
{
}
/// <summary>
/// Creates a new Floater instance.
/// </summary>
/// <param name="childBlock">
/// Optional child of the new Floater, may be null.
/// </param>
/// <param name="insertionPosition">
/// Optional position at which to insert the new Floater. May
/// be null.
/// </param>
public Floater(Block childBlock, TextPointer insertionPosition) : base(childBlock, insertionPosition)
{
}
#endregion Constructors
//-------------------------------------------------------------------
//
// Public Properties
//
//-------------------------------------------------------------------
#region Public Properties
/// <summary>
/// DependencyProperty for <see cref="HorizontalAlignment" /> property.
/// </summary>
public static readonly DependencyProperty HorizontalAlignmentProperty =
FrameworkElement.HorizontalAlignmentProperty.AddOwner(
typeof(Floater),
new FrameworkPropertyMetadata(
HorizontalAlignment.Stretch,
FrameworkPropertyMetadataOptions.AffectsMeasure));
/// <summary>
///
/// </summary>
public HorizontalAlignment HorizontalAlignment
{
get { return (HorizontalAlignment)GetValue(HorizontalAlignmentProperty); }
set { SetValue(HorizontalAlignmentProperty, value); }
}
/// <summary>
/// DependencyProperty for <see cref="Width" /> property.
/// </summary>
public static readonly DependencyProperty WidthProperty =
DependencyProperty.Register(
"Width",
typeof(double),
typeof(Floater),
new FrameworkPropertyMetadata(
Double.NaN,
FrameworkPropertyMetadataOptions.AffectsMeasure),
new ValidateValueCallback(IsValidWidth));
/// <summary>
/// The Width property specifies the width of the element.
/// </summary>
[TypeConverter(typeof(LengthConverter))]
public double Width
{
get { return (double)GetValue(WidthProperty); }
set { SetValue(WidthProperty, value); }
}
#endregion Public Properties
//-------------------------------------------------------------------
//
// Private Methods
//
//-------------------------------------------------------------------
#region Private Methods
private static bool IsValidWidth(object o)
{
double width = (double)o;
double maxWidth = Math.Min(1000000, PTS.MaxPageSize);
if (Double.IsNaN(width))
{
// Default value of width is NaN
return true;
}
if (width < 0 || width > maxWidth)
{
return false;
}
return true;
}
#endregion Private Methods
}
}
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