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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Windows.Input;
namespace System.Windows.Ink
{
#region Public APIs
// ===========================================================================================
/// <summary>
/// delegate used for event handlers that are called when a stroke was was added, removed, or modified inside of a Stroke collection
/// </summary>
public delegate void StrokeCollectionChangedEventHandler(object sender, StrokeCollectionChangedEventArgs e);
/// <summary>
/// Event arg used when delegate a stroke is was added, removed, or modified inside of a Stroke collection
/// </summary>
public class StrokeCollectionChangedEventArgs : EventArgs
{
private StrokeCollection.ReadOnlyStrokeCollection _added;
private StrokeCollection.ReadOnlyStrokeCollection _removed;
private int _index = -1;
/// <summary>Constructor</summary>
internal StrokeCollectionChangedEventArgs(StrokeCollection added, StrokeCollection removed, int index) :
this(added, removed)
{
_index = index;
}
/// <summary>Constructor</summary>
public StrokeCollectionChangedEventArgs(StrokeCollection added, StrokeCollection removed)
{
if ( added == null && removed == null )
{
throw new ArgumentException(SR.Format(SR.CannotBothBeNull, "added", "removed"));
}
_added = ( added == null ) ? null : new StrokeCollection.ReadOnlyStrokeCollection(added);
_removed = ( removed == null ) ? null : new StrokeCollection.ReadOnlyStrokeCollection(removed);
}
/// <summary>Set of strokes that where added, result may be an empty collection</summary>
public StrokeCollection Added
{
get
{
if ( _added == null )
{
_added = new StrokeCollection.ReadOnlyStrokeCollection(new StrokeCollection());
}
return _added;
}
}
/// <summary>Set of strokes that where removed, result may be an empty collection</summary>
public StrokeCollection Removed
{
get
{
if ( _removed == null )
{
_removed = new StrokeCollection.ReadOnlyStrokeCollection(new StrokeCollection());
}
return _removed;
}
}
/// <summary>
/// The zero based starting index that was affected
/// </summary>
internal int Index
{
get
{
return _index;
}
}
}
// ===========================================================================================
/// <summary>
/// delegate used for event handlers that are called when a change to the drawing attributes associated with one or more strokes has occurred.
/// </summary>
public delegate void PropertyDataChangedEventHandler(object sender, PropertyDataChangedEventArgs e);
/// <summary>
/// Event arg used a change to the drawing attributes associated with one or more strokes has occurred.
/// </summary>
public class PropertyDataChangedEventArgs : EventArgs
{
private Guid _propertyGuid;
private object _newValue;
private object _previousValue;
/// <summary>Constructor</summary>
public PropertyDataChangedEventArgs(Guid propertyGuid,
object newValue,
object previousValue)
{
if ( newValue == null && previousValue == null )
{
throw new ArgumentException(SR.Format(SR.CannotBothBeNull, "newValue", "previousValue"));
}
_propertyGuid = propertyGuid;
_newValue = newValue;
_previousValue = previousValue;
}
/// <summary>
/// Gets the property guid that represents the DrawingAttribute that changed
/// </summary>
public Guid PropertyGuid
{
get { return _propertyGuid; }
}
/// <summary>
/// Gets the new value of the DrawingAttribute
/// </summary>
public object NewValue
{
get { return _newValue; }
}
/// <summary>
/// Gets the previous value of the DrawingAttribute
/// </summary>
public object PreviousValue
{
get { return _previousValue; }
}
}
// ===========================================================================================
/// <summary>
/// delegate used for event handlers that are called when the Custom attributes associated with an object have changed.
/// </summary>
internal delegate void ExtendedPropertiesChangedEventHandler(object sender, ExtendedPropertiesChangedEventArgs e);
/// <summary>
/// Event Arg used when the Custom attributes associated with an object have changed.
/// </summary>
internal class ExtendedPropertiesChangedEventArgs : EventArgs
{
private ExtendedProperty _oldProperty;
private ExtendedProperty _newProperty;
/// <summary>Constructor</summary>
internal ExtendedPropertiesChangedEventArgs(ExtendedProperty oldProperty,
ExtendedProperty newProperty)
{
if ( oldProperty == null && newProperty == null )
{
throw new ArgumentNullException("oldProperty");
}
_oldProperty = oldProperty;
_newProperty = newProperty;
}
/// <summary>
/// The value of the previous property. If the Changed event was caused
/// by an ExtendedProperty being added, this value is null
/// </summary>
internal ExtendedProperty OldProperty
{
get { return _oldProperty; }
}
/// <summary>
/// The value of the new property. If the Changed event was caused by
/// an ExtendedProperty being removed, this value is null
/// </summary>
internal ExtendedProperty NewProperty
{
get { return _newProperty; }
}
}
/// <summary>
/// The delegate to use for the DefaultDrawingAttributesReplaced event
/// </summary>
public delegate void DrawingAttributesReplacedEventHandler(object sender, DrawingAttributesReplacedEventArgs e);
/// <summary>
/// DrawingAttributesReplacedEventArgs
/// </summary>
public class DrawingAttributesReplacedEventArgs : EventArgs
{
/// <summary>
/// DrawingAttributesReplacedEventArgs
/// </summary>
/// <remarks>
/// This must be public so InkCanvas can instance it
/// </remarks>
public DrawingAttributesReplacedEventArgs(DrawingAttributes newDrawingAttributes, DrawingAttributes previousDrawingAttributes)
{
ArgumentNullException.ThrowIfNull(newDrawingAttributes);
ArgumentNullException.ThrowIfNull(previousDrawingAttributes);
_newDrawingAttributes = newDrawingAttributes;
_previousDrawingAttributes = previousDrawingAttributes;
}
/// <summary>
/// [TBS]
/// </summary>
public DrawingAttributes NewDrawingAttributes
{
get { return _newDrawingAttributes; }
}
/// <summary>
/// [TBS]
/// </summary>
public DrawingAttributes PreviousDrawingAttributes
{
get { return _previousDrawingAttributes; }
}
private DrawingAttributes _newDrawingAttributes;
private DrawingAttributes _previousDrawingAttributes;
}
/// <summary>
/// The delegate to use for the StylusPointsReplaced event
/// </summary>
public delegate void StylusPointsReplacedEventHandler(object sender, StylusPointsReplacedEventArgs e);
/// <summary>
/// StylusPointsReplacedEventArgs
/// </summary>
public class StylusPointsReplacedEventArgs : EventArgs
{
/// <summary>
/// StylusPointsReplacedEventArgs
/// </summary>
/// <remarks>
/// This must be public so InkCanvas can instance it
/// </remarks>
public StylusPointsReplacedEventArgs(StylusPointCollection newStylusPoints, StylusPointCollection previousStylusPoints)
{
ArgumentNullException.ThrowIfNull(newStylusPoints);
ArgumentNullException.ThrowIfNull(previousStylusPoints);
_newStylusPoints = newStylusPoints;
_previousStylusPoints = previousStylusPoints;
}
/// <summary>
/// [TBS]
/// </summary>
public StylusPointCollection NewStylusPoints
{
get { return _newStylusPoints; }
}
/// <summary>
/// [TBS]
/// </summary>
public StylusPointCollection PreviousStylusPoints
{
get { return _previousStylusPoints; }
}
private StylusPointCollection _newStylusPoints;
private StylusPointCollection _previousStylusPoints;
}
#endregion
}
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