//-------------------------------------------------------------------------------
//
// Private Methods
//
//-------------------------------------------------------------------------------
#region Private Methods
/// <summary>
/// Copy the current Selection in XAML format.
/// Called by :
/// CopySelectedData
/// </summary>
/// <param name="dataObject"></param>
/// <param name="strokes"></param>
/// <param name="elements"></param>
/// <param name="transform"></param>
/// <param name="size"></param>
/// <returns>True if the copy is succeeded</returns>
private bool CopySelectionInXAML(IDataObject dataObject, StrokeCollection strokes, List <UIElement> elements, Matrix transform, Size size)
{
InkCanvas inkCanvas = new InkCanvas();
// We already transform the Strokes in CopySelectedData.
if (strokes.Count != 0)
{
inkCanvas.Strokes = strokes;
}
int elementCount = elements.Count;
if (elementCount != 0)
{
InkCanvasSelection inkCanvasSelection = InkCanvas.InkCanvasSelection;
for (int i = 0; i < elementCount; i++)
{
// NOTICE-2005/05/05-WAYNEZEN,
// An element can't be added to two visual trees.
// So, we cannot add the elements to the new container since they have been added to the current InkCanvas.
// Here we have to do is according to the suggestion from Avalon team -
// 1. Presist the elements to Xaml
// 2. Load the xaml to create the new instances of the elements.
// 3. Add the new instances to the new container.
string xml = XamlWriter.Save(elements[i]);
UIElement newElement = XamlReader.Load(new XmlTextReader(new StringReader(xml))) as UIElement;
((IAddChild)inkCanvas).AddChild(newElement);
// Now we tranform the element.
inkCanvasSelection.UpdateElementBounds(elements[i], newElement, transform);
}
}
if (inkCanvas != null)
{
inkCanvas.Width = size.Width;
inkCanvas.Height = size.Height;
ClipboardData data = new XamlClipboardData(new UIElement[] { inkCanvas });
try
{
data.CopyToDataObject(dataObject);
}
catch (SecurityException)
{
// If we hit a SecurityException under the PartialTrust, we should just fail the copy
// operation.
inkCanvas = null;
}
}
return(inkCanvas != null);
}
private bool CopySelectionInXAML(IDataObject dataObject, StrokeCollection strokes, List <UIElement> elements, Matrix transform, Size size)
{
if (!SecurityHelper.CheckUnmanagedCodePermission())
{
return(false);
}
InkCanvas inkCanvas = new InkCanvas();
if (strokes.Count != 0)
{
inkCanvas.Strokes = strokes;
}
int count = elements.Count;
if (count != 0)
{
InkCanvasSelection inkCanvasSelection = this.InkCanvas.InkCanvasSelection;
for (int i = 0; i < count; i++)
{
try
{
string s = XamlWriter.Save(elements[i]);
UIElement uielement = XamlReader.Load(new XmlTextReader(new StringReader(s))) as UIElement;
((IAddChild)inkCanvas).AddChild(uielement);
inkCanvasSelection.UpdateElementBounds(elements[i], uielement, transform);
}
catch (SecurityException)
{
inkCanvas = null;
break;
}
}
}
if (inkCanvas != null)
{
inkCanvas.Width = size.Width;
inkCanvas.Height = size.Height;
ClipboardData clipboardData = new XamlClipboardData(new UIElement[]
{
inkCanvas
});
try
{
clipboardData.CopyToDataObject(dataObject);
}
catch (SecurityException)
{
inkCanvas = null;
}
}
return(inkCanvas != null);
}
// Token: 0x06006D0E RID: 27918 RVA: 0x001F5420 File Offset: 0x001F3620
internal bool PasteData(IDataObject dataObject, ref StrokeCollection newStrokes, ref List <UIElement> newElements)
{
foreach (KeyValuePair <InkCanvasClipboardFormat, ClipboardData> keyValuePair in this._preferredClipboardData)
{
InkCanvasClipboardFormat key = keyValuePair.Key;
ClipboardData value = keyValuePair.Value;
if (value.CanPaste(dataObject))
{
switch (key)
{
case InkCanvasClipboardFormat.InkSerializedFormat:
{
ISFClipboardData isfclipboardData = (ISFClipboardData)value;
isfclipboardData.PasteFromDataObject(dataObject);
newStrokes = isfclipboardData.Strokes;
break;
}
case InkCanvasClipboardFormat.Text:
{
TextClipboardData textClipboardData = (TextClipboardData)value;
textClipboardData.PasteFromDataObject(dataObject);
newElements = textClipboardData.Elements;
break;
}
case InkCanvasClipboardFormat.Xaml:
{
XamlClipboardData xamlClipboardData = (XamlClipboardData)value;
xamlClipboardData.PasteFromDataObject(dataObject);
List <UIElement> elements = xamlClipboardData.Elements;
if (elements != null && elements.Count != 0)
{
if (elements.Count == 1 && ClipboardProcessor.InkCanvasDType.IsInstanceOfType(elements[0]))
{
this.TearDownInkCanvasContainer((InkCanvas)elements[0], ref newStrokes, ref newElements);
}
else
{
newElements = elements;
}
}
break;
}
}
return(true);
}
}
return(false);
}
/// <summary>
/// The method returns the Strokes or UIElement array if there is the supported data in the IDataObject
/// </summary>
/// <param name="dataObject">The IDataObject instance</param>
/// <param name="newStrokes">The strokes which are converted from the data in the IDataObject</param>
/// <param name="newElements">The elements array which are converted from the data in the IDataObject</param>
internal bool PasteData(IDataObject dataObject, ref StrokeCollection newStrokes, ref List <UIElement> newElements)
{
Debug.Assert(dataObject != null && _preferredClipboardData != null);
// We honor the order in our preferred list.
foreach (KeyValuePair <InkCanvasClipboardFormat, ClipboardData> pair in _preferredClipboardData)
{
InkCanvasClipboardFormat format = pair.Key;
ClipboardData data = pair.Value;
if (data.CanPaste(dataObject))
{
switch (format)
{
case InkCanvasClipboardFormat.Xaml:
{
XamlClipboardData xamlData = (XamlClipboardData)data;
xamlData.PasteFromDataObject(dataObject);
List <UIElement> elements = xamlData.Elements;
if (elements != null && elements.Count != 0)
{
// If the Xaml data has been set in an InkCanvas, the top element will be a container InkCanvas.
// In this case, the new elements will be the children of the container.
// Otherwise, the new elements will be whatever data from the data object.
if (elements.Count == 1 && ClipboardProcessor.InkCanvasDType.IsInstanceOfType(elements[0]))
{
TearDownInkCanvasContainer((InkCanvas)(elements[0]), ref newStrokes, ref newElements);
}
else
{
// The new elements are the data in the data object.
newElements = elements;
}
}
break;
}
case InkCanvasClipboardFormat.InkSerializedFormat:
{
// Retrieve the stroke data.
ISFClipboardData isfData = (ISFClipboardData)data;
isfData.PasteFromDataObject(dataObject);
newStrokes = isfData.Strokes;
break;
}
case InkCanvasClipboardFormat.Text:
{
// Convert the text data in the data object to a text box element.
TextClipboardData textData = (TextClipboardData)data;
textData.PasteFromDataObject(dataObject);
newElements = textData.Elements;
break;
}
}
// Once we've done pasting, just return now.
return(true);
}
}
// Nothing gets pasted.
return(false);
}
private bool CopySelectionInXAML(IDataObject dataObject, StrokeCollection strokes, List<UIElement> elements, Matrix transform, Size size)
{
//NOTE: after meeting with the partial trust team, we have
//collectively decided to only allow copy / cut of XAML if the caller
//has unmanagedcode permission, else we silently ignore the XAML
if (!SecurityHelper.CheckUnmanagedCodePermission())
{
return false;
}
else
{
InkCanvas inkCanvas = new InkCanvas();
// NOTICE-2005/12/06-WAYNEZEN,
// We already transform the Strokes in CopySelectedData.
if (strokes.Count != 0)
{
inkCanvas.Strokes = strokes;
}
int elementCount = elements.Count;
if (elementCount != 0)
{
InkCanvasSelection inkCanvasSelection = InkCanvas.InkCanvasSelection;
for (int i = 0; i < elementCount; i++)
{
// NOTICE-2005/05/05-WAYNEZEN,
// An element can't be added to two visual trees.
// So, we cannot add the elements to the new container since they have been added to the current InkCanvas.
// Here we have to do is according to the suggestion from Avalon team -
// 1. Presist the elements to Xaml
// 2. Load the xaml to create the new instances of the elements.
// 3. Add the new instances to the new container.
string xml;
try
{
xml = XamlWriter.Save(elements[i]);
UIElement newElement = XamlReader.Load(new XmlTextReader(new StringReader(xml))) as UIElement;
((IAddChild)inkCanvas).AddChild(newElement);
// Now we tranform the element.
inkCanvasSelection.UpdateElementBounds(elements[i], newElement, transform);
}
catch (SecurityException)
{
// If we hit a SecurityException under the PartialTrust, we should just stop generating
// the containing InkCanvas.
inkCanvas = null;
break;
}
}
}
if (inkCanvas != null)
{
inkCanvas.Width = size.Width;
inkCanvas.Height = size.Height;
ClipboardData data = new XamlClipboardData(new UIElement[] { inkCanvas });
try
{
data.CopyToDataObject(dataObject);
}
catch (SecurityException)
{
// If we hit a SecurityException under the PartialTrust, we should just fail the copy
// operation.
inkCanvas = null;
}
}
return inkCanvas != null;
}
}
