/// <summary>
/// StylusPointCollection
/// </summary>
/// <param name="stylusPoints">stylusPoints</param>
public StylusPointCollection(IEnumerable <StylusPoint> stylusPoints)
//: this() //don't call the base ctor, we want to use the first sp
{
if (stylusPoints == null)
{
throw new ArgumentNullException("stylusPoints");
}
List <StylusPoint> points = new List <StylusPoint>(stylusPoints);
if (points.Count == 0)
{
throw new ArgumentException(SR.Get(SRID.InvalidStylusPointConstructionZeroLengthCollection), "stylusPoints");
}
//
// set our packet description to the first in the array
//
_stylusPointDescription = points[0].Description;
((List <StylusPoint>) this.Items).Capacity = points.Count;
for (int x = 0; x < points.Count; x++)
{
this.Add(points[x]);
}
}
/// <summary>
/// Adds the StylusPoints in the StylusPointCollection to this StylusPointCollection
/// </summary>
/// <param name="stylusPoints">stylusPoints</param>
public void Add(StylusPointCollection stylusPoints)
{
//note that we don't raise an exception if stylusPoints.Count == 0
if (null == stylusPoints)
{
throw new ArgumentNullException("stylusPoints");
}
if (!StylusPointDescription.AreCompatible(stylusPoints.Description,
_stylusPointDescription))
{
throw new ArgumentException(SR.Get(SRID.IncompatibleStylusPointDescriptions), "stylusPoints");
}
// cache count outside of the loop, so if this SPC is ever passed
// we don't loop forever
int count = stylusPoints.Count;
for (int x = 0; x < count; x++)
{
StylusPoint stylusPoint = stylusPoints[x];
stylusPoint.Description = _stylusPointDescription;
//this does not go through our protected virtuals
((List <StylusPoint>) this.Items).Add(stylusPoint);
}
if (stylusPoints.Count > 0)
{
OnChanged(EventArgs.Empty);
}
}
internal Point GetLastTabletPoint()
{
int packetLength = StylusPointDescription.GetInputArrayLengthPerPoint();
int lastXIndex = _data.Length - packetLength;
return(new Point(_data[lastXIndex], _data[lastXIndex + 1]));
}
/// <summary>
/// Private clone implementation
/// </summary>
private StylusPointCollection Clone(GeneralTransform transform, StylusPointDescription descriptionToUse, int count)
{
Debug.Assert(count <= this.Count);
//
// We don't need to copy our _stylusPointDescription because it is immutable
// and we don't need to copy our StylusPoints, because they are structs.
//
StylusPointCollection newCollection =
new StylusPointCollection(descriptionToUse, count);
bool isIdentity = (transform is Transform) ? ((Transform)transform).IsIdentity : false;
for (int x = 0; x < count; x++)
{
if (isIdentity)
{
((List <StylusPoint>)newCollection.Items).Add(this[x]);
}
else
{
Point point = new Point();
StylusPoint stylusPoint = this[x];
point.X = stylusPoint.X;
point.Y = stylusPoint.Y;
transform.TryTransform(point, out point);
stylusPoint.X = point.X;
stylusPoint.Y = point.Y;
((List <StylusPoint>)newCollection.Items).Add(stylusPoint);
}
}
return(newCollection);
}
internal RawStylusInputReport(
InputMode mode,
int timestamp,
PresentationSource inputSource,
RawStylusActions actions,
StylusPointDescription mousePointDescription,
int[] mouseData)
: base(inputSource, InputType.Stylus, mode, timestamp)
{
// Validate parameters
if (!RawStylusActionsHelper.IsValid(actions))
{
throw new InvalidEnumArgumentException(SR.Get(SRID.Enum_Invalid, "actions"));
}
if (mouseData == null)
{
throw new ArgumentNullException("mouseData");
}
_penContext = new SecurityCriticalDataClass <PenContext>(null);
_actions = actions;
_tabletDeviceId = 0;
_stylusDeviceId = 0;
_data = mouseData;
_isSynchronize = false;
_mousePointDescription = mousePointDescription;
_isMouseInput = true;
}
/// <summary>
/// Internal ctor called by input with a raw int[]
/// </summary>
/// <param name="stylusPointDescription">stylusPointDescription</param>
/// <param name="rawPacketData">rawPacketData</param>
/// <param name="tabletToView">tabletToView</param>
/// <param name="tabletToViewMatrix">tabletToView</param>
internal StylusPointCollection(StylusPointDescription stylusPointDescription, int[] rawPacketData, GeneralTransform tabletToView, Matrix tabletToViewMatrix)
{
if (null == stylusPointDescription)
{
throw new ArgumentNullException("stylusPointDescription");
}
_stylusPointDescription = stylusPointDescription;
int lengthPerPoint = stylusPointDescription.GetInputArrayLengthPerPoint();
int logicalPointCount = rawPacketData.Length / lengthPerPoint;
Debug.Assert(0 == rawPacketData.Length % lengthPerPoint, "Invalid assumption about packet length, there shouldn't be any remainder");
//
// set our capacity and validate
//
((List <StylusPoint>) this.Items).Capacity = logicalPointCount;
for (int count = 0, i = 0; count < logicalPointCount; count++, i += lengthPerPoint)
{
//first, determine the x, y values by xf-ing them
Point p = new Point(rawPacketData[i], rawPacketData[i + 1]);
if (tabletToView != null)
{
tabletToView.TryTransform(p, out p);
}
else
{
p = tabletToViewMatrix.Transform(p);
}
int startIndex = 2;
bool containsTruePressure = stylusPointDescription.ContainsTruePressure;
if (containsTruePressure)
{
//don't copy pressure in the int[] for extra data
startIndex++;
}
int[] data = null;
int dataLength = lengthPerPoint - startIndex;
if (dataLength > 0)
{
//copy the rest of the data
var rawArrayStartIndex = i + startIndex;
data = rawPacketData.AsSpan(rawArrayStartIndex, dataLength).ToArray();
}
StylusPoint newPoint = new StylusPoint(p.X, p.Y, StylusPoint.DefaultPressure, _stylusPointDescription, data, false, false);
if (containsTruePressure)
{
//use the algorithm to set pressure in StylusPoint
int pressure = rawPacketData[i + 2];
newPoint.SetPropertyValue(StylusPointProperties.NormalPressure, pressure);
}
//this does not go through our protected virtuals
((List <StylusPoint>) this.Items).Add(newPoint);
}
}
/// <summary>
/// StylusPointCollection
/// </summary>
/// <param name="stylusPointDescription">stylusPointDescription</param>
public StylusPointCollection(StylusPointDescription stylusPointDescription)
{
if (null == stylusPointDescription)
{
throw new ArgumentNullException();
}
_stylusPointDescription = stylusPointDescription;
}
/// <summary>
/// StylusPointCollection
/// </summary>
/// <param name="stylusPointDescription">stylusPointDescription</param>
/// <param name="initialCapacity">initialCapacity</param>
public StylusPointCollection(StylusPointDescription stylusPointDescription, int initialCapacity)
: this(stylusPointDescription)
{
if (initialCapacity < 0)
{
throw new ArgumentException(SR.Get(SRID.InvalidStylusPointConstructionZeroLengthCollection), "initialCapacity");
}
((List <StylusPoint>) this.Items).Capacity = initialCapacity;
}
/// <summary>
/// Compares two StylusPoint instances for exact equality.
/// Note that double values can acquire error when operated upon, such that
/// an exact comparison between two values which are logically equal may fail.
/// Furthermore, using this equality operator, Double.NaN is not equal to itself.
/// Descriptions must match for equality to succeed and additional values must match
/// </summary>
/// <returns>
/// bool - true if the two Stylus instances are exactly equal, false otherwise
/// </returns>
/// <param name='stylusPoint1'>The first StylusPoint to compare</param>
/// <param name='stylusPoint2'>The second StylusPoint to compare</param>
public static bool Equals(StylusPoint stylusPoint1, StylusPoint stylusPoint2)
{
//
// do the cheap comparison first
//
bool membersEqual =
stylusPoint1._x == stylusPoint2._x &&
stylusPoint1._y == stylusPoint2._y &&
stylusPoint1._pressureFactor == stylusPoint2._pressureFactor;
if (!membersEqual)
{
return(false);
}
//
// before we go checking the descriptions... check to see if both additionalData's are null
// we can infer that the SPD's are just X,Y,P and that they are compatible.
//
if (stylusPoint1._additionalValues == null &&
stylusPoint2._additionalValues == null)
{
Debug.Assert(StylusPointDescription.AreCompatible(stylusPoint1.Description, stylusPoint2.Description));
return(true);
}
//
// ok, the members are equal. compare the description and then additional data
//
if (object.ReferenceEquals(stylusPoint1.Description, stylusPoint2.Description) ||
StylusPointDescription.AreCompatible(stylusPoint1.Description, stylusPoint2.Description))
{
//
// descriptions match and there are equal numbers of additional values
// let's check the values
//
for (int x = 0; x < stylusPoint1._additionalValues.Length; x++)
{
if (stylusPoint1._additionalValues[x] != stylusPoint2._additionalValues[x])
{
return(false);
}
}
//
// Ok, ok already, we're equal
//
return(true);
}
return(false);
}
/// <summary>
/// called by base class Collection<T> when an item is set in list;
/// raises a CollectionChanged event to any listeners
/// </summary>
protected override sealed void SetItem(int index, StylusPoint stylusPoint)
{
if (!StylusPointDescription.AreCompatible(stylusPoint.Description,
_stylusPointDescription))
{
throw new ArgumentException(SR.Get(SRID.IncompatibleStylusPointDescriptions), "stylusPoint");
}
stylusPoint.Description = _stylusPointDescription;
base.SetItem(index, stylusPoint);
OnChanged(EventArgs.Empty);
}
/// <summary>
/// Returns a new StylusPointDescription with the common StylusPointProperties from both
/// </summary>
/// <param name="stylusPointDescription">stylusPointDescription</param>
/// <param name="stylusPointDescriptionPreserveInfo">stylusPointDescriptionPreserveInfo</param>
/// <remarks>The StylusPointProperties from stylusPointDescriptionPreserveInfo will be returned in the new StylusPointDescription</remarks>
public static StylusPointDescription GetCommonDescription(StylusPointDescription stylusPointDescription, StylusPointDescription stylusPointDescriptionPreserveInfo)
{
if (stylusPointDescription == null)
{
throw new ArgumentNullException("stylusPointDescription");
}
if (stylusPointDescriptionPreserveInfo == null)
{
throw new ArgumentNullException("stylusPointDescriptionPreserveInfo");
}
#pragma warning disable 6506 // if a StylusPointDescription is not null, then _stylusPointPropertyInfos is not null.
//
// ignore X, Y, Pressure - they are guaranteed to be the first3 members
//
Debug.Assert(stylusPointDescription._stylusPointPropertyInfos.Length >= 3 &&
stylusPointDescription._stylusPointPropertyInfos[0].Id == StylusPointPropertyIds.X &&
stylusPointDescription._stylusPointPropertyInfos[1].Id == StylusPointPropertyIds.Y &&
stylusPointDescription._stylusPointPropertyInfos[2].Id == StylusPointPropertyIds.NormalPressure);
Debug.Assert(stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos.Length >= 3 &&
stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[0].Id == StylusPointPropertyIds.X &&
stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[1].Id == StylusPointPropertyIds.Y &&
stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[2].Id == StylusPointPropertyIds.NormalPressure);
//add x, y, p
List <StylusPointPropertyInfo> commonProperties = new List <StylusPointPropertyInfo>();
commonProperties.Add(stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[0]);
commonProperties.Add(stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[1]);
commonProperties.Add(stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[2]);
//add common properties
for (int x = RequiredCountOfProperties; x < stylusPointDescription._stylusPointPropertyInfos.Length; x++)
{
for (int y = RequiredCountOfProperties; y < stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos.Length; y++)
{
if (StylusPointPropertyInfo.AreCompatible(stylusPointDescription._stylusPointPropertyInfos[x],
stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[y]))
{
commonProperties.Add(stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[y]);
}
}
}
#pragma warning restore 6506
return(new StylusPointDescription(commonProperties));
}
internal void UpdateSizeDeltas(StylusPointDescription description, StylusLogic stylusLogic)
{
if (_doubleTapSize.IsEmpty || _cancelSize.IsEmpty || _forceUpdateSizeDeltas)
{
// Query default settings for mouse drag and double tap (with minimum of 1x1 size).
Size mouseDragDefault = new Size(Math.Max(1, SafeSystemMetrics.DragDeltaX / 2),
Math.Max(1, SafeSystemMetrics.DragDeltaY / 2));
Size mouseDoubleTapDefault = new Size(Math.Max(1, SafeSystemMetrics.DoubleClickDeltaX / 2),
Math.Max(1, SafeSystemMetrics.DoubleClickDeltaY / 2));
StylusPointPropertyInfo xProperty = description.GetPropertyInfo(StylusPointProperties.X);
StylusPointPropertyInfo yProperty = description.GetPropertyInfo(StylusPointProperties.Y);
uint dwXValue = GetPropertyValue(xProperty);
uint dwYValue = GetPropertyValue(yProperty);
if (dwXValue != 0 && dwYValue != 0)
{
_cancelSize = new Size((int)Math.Round((ScreenSize.Width * stylusLogic.CancelDelta) / dwXValue),
(int)Math.Round((ScreenSize.Height * stylusLogic.CancelDelta) / dwYValue));
// Make sure we return whole numbers (pixels are whole numbers) and take the maximum
// value between mouse and stylus settings to be safe.
_cancelSize.Width = Math.Max(mouseDragDefault.Width, _cancelSize.Width);
_cancelSize.Height = Math.Max(mouseDragDefault.Height, _cancelSize.Height);
_doubleTapSize = new Size((int)Math.Round((ScreenSize.Width * stylusLogic.DoubleTapDelta) / dwXValue),
(int)Math.Round((ScreenSize.Height * stylusLogic.DoubleTapDelta) / dwYValue));
// Make sure we return whole numbers (pixels are whole numbers) and take the maximum
// value between mouse and stylus settings to be safe.
_doubleTapSize.Width = Math.Max(mouseDoubleTapDefault.Width, _doubleTapSize.Width);
_doubleTapSize.Height = Math.Max(mouseDoubleTapDefault.Height, _doubleTapSize.Height);
}
else
{
// If no info to do the calculation then use the mouse settings for the default.
_doubleTapSize = mouseDoubleTapDefault;
_cancelSize = mouseDragDefault;
}
_forceUpdateSizeDeltas = false;
}
}
/// <summary>
/// Loads a stroke from the stream based on Stroke Descriptor, StylusPointDescription, Drawing Attributes, Stroke IDs, transform and GuidList
/// </summary>
/// <param name="stream"></param>
/// <param name="size"></param>
/// <param name="guidList"></param>
/// <param name="strokeDescriptor"></param>
/// <param name="stylusPointDescription"></param>
/// <param name="drawingAttributes"></param>
/// <param name="transform"></param>
/// <param name="stroke">Newly decoded stroke</param>
#endif
internal static uint DecodeStroke(Stream stream,
uint size,
GuidList guidList,
StrokeDescriptor strokeDescriptor,
StylusPointDescription stylusPointDescription,
DrawingAttributes drawingAttributes,
Matrix transform,
#if OLD_ISF
Compressor compressor,
#endif
out Stroke stroke)
{
ExtendedPropertyCollection extendedProperties;
StylusPointCollection stylusPoints;
uint cb = DecodeISFIntoStroke(
#if OLD_ISF
compressor,
#endif
stream,
size,
guidList,
strokeDescriptor,
stylusPointDescription,
transform,
out stylusPoints,
out extendedProperties);
if (cb != size)
{
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Stroke size (" +
cb.ToString(System.Globalization.CultureInfo.InvariantCulture) + ") != expected (" +
size.ToString(System.Globalization.CultureInfo.InvariantCulture) + ")"));
}
stroke = new Stroke(stylusPoints, drawingAttributes, extendedProperties);
return cb;
}
/// <summary>
/// Returns true if this StylusPointDescription is a subset
/// of the StylusPointDescription passed in
/// </summary>
/// <param name="stylusPointDescriptionSuperset">stylusPointDescriptionSuperset</param>
/// <returns></returns>
public bool IsSubsetOf(StylusPointDescription stylusPointDescriptionSuperset)
{
if (null == stylusPointDescriptionSuperset)
{
throw new ArgumentNullException("stylusPointDescriptionSuperset");
}
if (stylusPointDescriptionSuperset._stylusPointPropertyInfos.Length < _stylusPointPropertyInfos.Length)
{
return(false);
}
//
// iterate through our local properties and make sure that the
// superset contains them
//
for (int x = 0; x < _stylusPointPropertyInfos.Length; x++)
{
Guid id = _stylusPointPropertyInfos[x].Id;
if (-1 == stylusPointDescriptionSuperset.IndexOf(id))
{
return(false);
}
}
return(true);
}
/// <summary>
/// Returns true if the two StylusPointDescriptions have the same StylusPointProperties. Metrics are ignored.
/// </summary>
/// <param name="stylusPointDescription1">stylusPointDescription1</param>
/// <param name="stylusPointDescription2">stylusPointDescription2</param>
public static bool AreCompatible(StylusPointDescription stylusPointDescription1, StylusPointDescription stylusPointDescription2)
{
if (stylusPointDescription1 == null || stylusPointDescription2 == null)
{
throw new ArgumentNullException("stylusPointDescription");
}
#pragma warning disable 6506 // if a StylusPointDescription is not null, then _stylusPointPropertyInfos is not null.
//
// ignore X, Y, Pressure - they are guaranteed to be the first3 members
//
Debug.Assert(stylusPointDescription1._stylusPointPropertyInfos.Length >= RequiredCountOfProperties &&
stylusPointDescription1._stylusPointPropertyInfos[0].Id == StylusPointPropertyIds.X &&
stylusPointDescription1._stylusPointPropertyInfos[1].Id == StylusPointPropertyIds.Y &&
stylusPointDescription1._stylusPointPropertyInfos[2].Id == StylusPointPropertyIds.NormalPressure);
Debug.Assert(stylusPointDescription2._stylusPointPropertyInfos.Length >= RequiredCountOfProperties &&
stylusPointDescription2._stylusPointPropertyInfos[0].Id == StylusPointPropertyIds.X &&
stylusPointDescription2._stylusPointPropertyInfos[1].Id == StylusPointPropertyIds.Y &&
stylusPointDescription2._stylusPointPropertyInfos[2].Id == StylusPointPropertyIds.NormalPressure);
if (stylusPointDescription1._stylusPointPropertyInfos.Length != stylusPointDescription2._stylusPointPropertyInfos.Length)
{
return(false);
}
for (int x = RequiredCountOfProperties; x < stylusPointDescription1._stylusPointPropertyInfos.Length; x++)
{
if (!StylusPointPropertyInfo.AreCompatible(stylusPointDescription1._stylusPointPropertyInfos[x], stylusPointDescription2._stylusPointPropertyInfos[x]))
{
return(false);
}
}
#pragma warning restore 6506
return(true);
}
public StylusPoint(double x, double y, float pressureFactor, StylusPointDescription stylusPointDescription, int[] additionalValues)
{
}
internal RawStylusInputReport(
InputMode mode,
int timestamp,
PresentationSource inputSource,
RawStylusActions actions,
StylusPointDescription mousePointDescription,
int[] mouseData)
: base(inputSource, InputType.Stylus, mode, timestamp)
{
// Validate parameters
if (!RawStylusActionsHelper.IsValid(actions))
{
throw new InvalidEnumArgumentException(SR.Get(SRID.Enum_Invalid, "actions"));
}
if (mouseData == null)
{
throw new ArgumentNullException("mouseData");
}
_penContext = new SecurityCriticalDataClass<PenContext>(null);
_actions = actions;
_tabletDeviceId = 0;
_stylusDeviceId = 0;
_data = mouseData;
_isSynchronize = false;
_mousePointDescription = mousePointDescription;
_isMouseInput = true;
}
public StylusPointCollection GetStylusPoints(System.Windows.IInputElement relativeTo, StylusPointDescription subsetToReformatTo)
{
return default(StylusPointCollection);
}
/// <summary>
/// Returns true if this StylusPointDescription is a subset
/// of the StylusPointDescription passed in
/// </summary>
/// <param name="stylusPointDescriptionSuperset">stylusPointDescriptionSuperset</param>
/// <returns></returns>
public bool IsSubsetOf(StylusPointDescription stylusPointDescriptionSuperset)
{
if (null == stylusPointDescriptionSuperset)
{
throw new ArgumentNullException("stylusPointDescriptionSuperset");
}
if (stylusPointDescriptionSuperset._stylusPointPropertyInfos.Length < _stylusPointPropertyInfos.Length)
{
return false;
}
//
// iterate through our local properties and make sure that the
// superset contains them
//
for (int x = 0; x < _stylusPointPropertyInfos.Length; x++)
{
Guid id = _stylusPointPropertyInfos[x].Id;
if (-1 == stylusPointDescriptionSuperset.IndexOf(id))
{
return false;
}
}
return true;
}
/// <summary>
/// Reformat
/// </summary>
/// <param name="subsetToReformatTo">subsetToReformatTo</param>
public StylusPointCollection Reformat(StylusPointDescription subsetToReformatTo)
{
return(Reformat(subsetToReformatTo, System.Windows.Media.Transform.Identity));
}
/// <summary>
/// This functions loads a stroke from a memory stream based on the descriptor and GuidList. It returns
/// the no of bytes it has read from the stream to correctly load the stream, which should be same as
/// the value of the size parameter. If they are unequal throws ArgumentException. Stroke descriptor is
/// used to load the packetproperty as well as ExtendedPropertyCollection on this stroke. Compressor is used
/// to decompress the data.
/// </summary>
/// <param name="stream"></param>
/// <param name="totalBytesInStrokeBlockOfIsfStream"></param>
/// <param name="guidList"></param>
/// <param name="strokeDescriptor"></param>
/// <param name="stylusPointDescription"></param>
/// <param name="transform"></param>
/// <param name="stylusPoints"></param>
/// <param name="extendedProperties"></param>
#endif
static uint DecodeISFIntoStroke(
#if OLD_ISF
Compressor compressor,
#endif
Stream stream,
uint totalBytesInStrokeBlockOfIsfStream,
GuidList guidList,
StrokeDescriptor strokeDescriptor,
StylusPointDescription stylusPointDescription,
Matrix transform,
out StylusPointCollection stylusPoints,
out ExtendedPropertyCollection extendedProperties)
{
stylusPoints = null;
extendedProperties = null;
// We do allow a stroke with no packet data
if (0 == totalBytesInStrokeBlockOfIsfStream)
{
return 0;
}
uint locallyDecodedBytes;
uint remainingBytesInStrokeBlock = totalBytesInStrokeBlockOfIsfStream;
// First try to load any packet data
locallyDecodedBytes = LoadPackets( stream,
remainingBytesInStrokeBlock,
#if OLD_ISF
compressor,
#endif
stylusPointDescription,
transform,
out stylusPoints);
if (locallyDecodedBytes > remainingBytesInStrokeBlock)
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Packet buffer overflowed the ISF stream"));
remainingBytesInStrokeBlock -= locallyDecodedBytes;
if (0 == remainingBytesInStrokeBlock)
{
return locallyDecodedBytes;
}
// Now read the extended propertes
for (int iTag = 1; iTag < strokeDescriptor.Template.Count && remainingBytesInStrokeBlock > 0; iTag++)
{
KnownTagCache.KnownTagIndex tag = strokeDescriptor.Template[iTag - 1];
switch (tag)
{
case MS.Internal.Ink.InkSerializedFormat.KnownTagCache.KnownTagIndex.StrokePropertyList:
{
// we've found the stroke extended properties. Load them now.
while (iTag < strokeDescriptor.Template.Count && remainingBytesInStrokeBlock > 0)
{
tag = strokeDescriptor.Template[iTag];
object data;
Guid guid = guidList.FindGuid(tag);
if (guid == Guid.Empty)
{
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Stroke Custom Attribute tag embedded in ISF stream does not match guid table"));
}
// load the extended property data from the stream (and decode the type)
locallyDecodedBytes = ExtendedPropertySerializer.DecodeAsISF(stream, remainingBytesInStrokeBlock, guidList, tag, ref guid, out data);
// add the guid/data pair into the property collection (don't redecode the type)
if (extendedProperties == null)
{
extendedProperties = new ExtendedPropertyCollection();
}
extendedProperties[guid] = data;
if (locallyDecodedBytes > remainingBytesInStrokeBlock)
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Invalid ISF data"));
remainingBytesInStrokeBlock -= locallyDecodedBytes;
iTag++;
}
}
break;
case MS.Internal.Ink.InkSerializedFormat.KnownTagCache.KnownTagIndex.Buttons:
{
// Next tag is count of buttons and the tags for the button guids
iTag += (int)((uint)strokeDescriptor.Template[iTag]) + 1;
}
break;
// ignore any tags embedded in the Stroke block that this
// version of the ISF decoder doesn't understand
default:
{
System.Diagnostics.Trace.WriteLine("Ignoring unhandled stroke tag in ISF stroke descriptor");
}
break;
}
}
// Now try to load any tagged property data or point property data
while (remainingBytesInStrokeBlock > 0)
{
// Read the tag first
KnownTagCache.KnownTagIndex tag;
uint uiTag;
locallyDecodedBytes = SerializationHelper.Decode(stream, out uiTag);
tag = (KnownTagCache.KnownTagIndex)uiTag;
if (locallyDecodedBytes > remainingBytesInStrokeBlock)
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Invalid ISF data"));
remainingBytesInStrokeBlock -= locallyDecodedBytes;
// if it is a point property block
switch (tag)
{
case MS.Internal.Ink.InkSerializedFormat.KnownTagCache.KnownTagIndex.PointProperty:
{
// First load the totalBytesInStrokeBlockOfIsfStream of the point property block
uint cbsize;
locallyDecodedBytes = SerializationHelper.Decode(stream, out cbsize);
if (locallyDecodedBytes > remainingBytesInStrokeBlock)
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Invalid ISF data"));
remainingBytesInStrokeBlock -= locallyDecodedBytes;
while (remainingBytesInStrokeBlock > 0)
{
// First read the tag corresponding to the property
locallyDecodedBytes = SerializationHelper.Decode(stream, out uiTag);
tag = (KnownTagCache.KnownTagIndex)uiTag;
if (locallyDecodedBytes > remainingBytesInStrokeBlock)
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Invalid ISF data"));
remainingBytesInStrokeBlock -= locallyDecodedBytes;
// Now read the packet index for which the property will apply
uint propindex;
locallyDecodedBytes = SerializationHelper.Decode(stream, out propindex);
if (locallyDecodedBytes > remainingBytesInStrokeBlock)
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Invalid ISF data"));
remainingBytesInStrokeBlock -= locallyDecodedBytes;
uint propsize;
locallyDecodedBytes = SerializationHelper.Decode(stream, out propsize);
if (locallyDecodedBytes > remainingBytesInStrokeBlock)
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Invalid ISF data"));
remainingBytesInStrokeBlock -= locallyDecodedBytes;
// Compressed data totalBytesInStrokeBlockOfIsfStream
propsize += 1;
// Make sure we have enough data to read
if (propsize > remainingBytesInStrokeBlock)
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Invalid ISF data"));
byte[] in_buffer = new byte[propsize];
uint bytesRead = StrokeCollectionSerializer.ReliableRead(stream, in_buffer, propsize);
if (propsize != bytesRead)
{
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Read different size from stream then expected"));
}
byte[] out_buffer = Compressor.DecompressPropertyData(in_buffer);
System.Diagnostics.Debug.Assert(false, "ExtendedProperties for points are not supported");
// skip the bytes in both success & failure cases
// Note: Point ExtendedProperties are discarded
remainingBytesInStrokeBlock -= propsize;
}
}
break;
default:
{
object data;
Guid guid = guidList.FindGuid(tag);
if (guid == Guid.Empty)
{
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Stroke Custom Attribute tag embedded in ISF stream does not match guid table"));
}
// load the extended property data from the stream (and decode the type)
locallyDecodedBytes = ExtendedPropertySerializer.DecodeAsISF(stream, remainingBytesInStrokeBlock, guidList, tag, ref guid, out data);
// add the guid/data pair into the property collection (don't redecode the type)
if (extendedProperties == null)
{
extendedProperties = new ExtendedPropertyCollection();
}
extendedProperties[guid] = data;
if (locallyDecodedBytes > remainingBytesInStrokeBlock)
{
throw new InvalidOperationException(StrokeCollectionSerializer.ISFDebugMessage("ExtendedProperty decoded totalBytesInStrokeBlockOfIsfStream exceeded ISF stream totalBytesInStrokeBlockOfIsfStream"));
}
remainingBytesInStrokeBlock -= locallyDecodedBytes;
}
break;
}
}
if (0 != remainingBytesInStrokeBlock)
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Invalid ISF data"));
return totalBytesInStrokeBlockOfIsfStream;
}
public StylusPointCollection(StylusPointDescription stylusPointDescription, int initialCapacity)
{
}
public StylusPointCollection(StylusPointDescription stylusPointDescription)
{
}
public System.Windows.Input.StylusPointCollection Reformat(StylusPointDescription subsetToReformatTo)
{
return(default(System.Windows.Input.StylusPointCollection));
}
internal void UpdateSizeDeltas(StylusPointDescription description, StylusLogic stylusLogic)
{
if (_doubleTapSize.IsEmpty || _cancelSize.IsEmpty || _forceUpdateSizeDeltas)
{
// Query default settings for mouse drag and double tap (with minimum of 1x1 size).
Size mouseDragDefault = new Size(Math.Max(1, SafeSystemMetrics.DragDeltaX / 2),
Math.Max(1, SafeSystemMetrics.DragDeltaY / 2));
Size mouseDoubleTapDefault = new Size(Math.Max(1, SafeSystemMetrics.DoubleClickDeltaX / 2),
Math.Max(1, SafeSystemMetrics.DoubleClickDeltaY / 2));
StylusPointPropertyInfo xProperty = description.GetPropertyInfo(StylusPointProperties.X);
StylusPointPropertyInfo yProperty = description.GetPropertyInfo(StylusPointProperties.Y);
uint dwXValue = GetPropertyValue(xProperty);
uint dwYValue = GetPropertyValue(yProperty);
if (dwXValue != 0 && dwYValue != 0)
{
_cancelSize = new Size((int)Math.Round((ScreenSize.Width * stylusLogic.CancelDelta) / dwXValue),
(int)Math.Round((ScreenSize.Height * stylusLogic.CancelDelta) / dwYValue));
// Make sure we return whole numbers (pixels are whole numbers) and take the maximum
// value between mouse and stylus settings to be safe.
_cancelSize.Width = Math.Max(mouseDragDefault.Width, _cancelSize.Width);
_cancelSize.Height = Math.Max(mouseDragDefault.Height, _cancelSize.Height);
_doubleTapSize = new Size((int)Math.Round((ScreenSize.Width * stylusLogic.DoubleTapDelta) / dwXValue),
(int)Math.Round((ScreenSize.Height * stylusLogic.DoubleTapDelta) / dwYValue));
// Make sure we return whole numbers (pixels are whole numbers) and take the maximum
// value between mouse and stylus settings to be safe.
_doubleTapSize.Width = Math.Max(mouseDoubleTapDefault.Width, _doubleTapSize.Width);
_doubleTapSize.Height = Math.Max(mouseDoubleTapDefault.Height, _doubleTapSize.Height);
}
else
{
// If no info to do the calculation then use the mouse settings for the default.
_doubleTapSize = mouseDoubleTapDefault;
_cancelSize = mouseDragDefault;
}
_forceUpdateSizeDeltas = false;
}
}
private void InitStylusPointDescription()
{
int cProps;
int cButtons;
int pressureIndex = -1;
// Make sure we are never called on the application thread when we need to talk
// to penimc or else we can cause reentrancy!
Debug.Assert(!_contexts._inputSource.Value.CheckAccess());
// We should always have a valid IPimcContext interface pointer.
Debug.Assert(_pimcContext != null && _pimcContext.Value != null);
_pimcContext.Value.GetPacketDescriptionInfo(out cProps, out cButtons); // Calls Unmanaged code - SecurityCritical with SUC.
List<StylusPointPropertyInfo> propertyInfos = new List<StylusPointPropertyInfo>(cProps + cButtons + 3);
for (int i = 0; i < cProps; i++)
{
Guid guid;
int min, max;
int units;
float res;
_pimcContext.Value.GetPacketPropertyInfo(i, out guid, out min, out max, out units, out res); // Calls Unmanaged code - SecurityCritical with SUC.
if (pressureIndex == -1 && guid == StylusPointPropertyIds.NormalPressure)
{
pressureIndex = i;
}
if (_statusPropertyIndex == -1 && guid == StylusPointPropertyIds.PacketStatus)
{
_statusPropertyIndex = i;
}
StylusPointPropertyInfo propertyInfo = new StylusPointPropertyInfo(new StylusPointProperty(guid, false), min, max, (StylusPointPropertyUnit)units, res);
propertyInfos.Add(propertyInfo);
}
Debug.Assert(_statusPropertyIndex != -1); // We should always see this.
// Make sure we actually created propertyInfos OK
if (propertyInfos != null)
{
for (int i = 0; i < cButtons; i++)
{
Guid buttonGuid;
_pimcContext.Value.GetPacketButtonInfo(i, out buttonGuid); // Calls Unmanaged code - SecurityCritical with SUC.
StylusPointProperty buttonProperty = new StylusPointProperty(buttonGuid, true);
StylusPointPropertyInfo buttonInfo = new StylusPointPropertyInfo(buttonProperty);
propertyInfos.Add(buttonInfo);
}
//validate we can never get X, Y at index != 0, 1
Debug.Assert(propertyInfos[StylusPointDescription.RequiredXIndex /*0*/].Id == StylusPointPropertyIds.X, "X isn't where we expect it! Fix PenImc to ask for X at index 0");
Debug.Assert(propertyInfos[StylusPointDescription.RequiredYIndex /*0*/].Id == StylusPointPropertyIds.Y, "Y isn't where we expect it! Fix PenImc to ask for Y at index 1");
Debug.Assert(pressureIndex == -1 || pressureIndex == StylusPointDescription.RequiredPressureIndex /*2*/,
"Fix PenImc to ask for NormalPressure at index 2!");
if (pressureIndex == -1)
{
//pressure wasn't found. Add it
propertyInfos.Insert(StylusPointDescription.RequiredPressureIndex /*2*/, StylusPointPropertyInfoDefaults.NormalPressure);
}
_infoX = propertyInfos[0];
_infoY = propertyInfos[1];
_stylusPointDescription = new StylusPointDescription(propertyInfos, pressureIndex);
}
}
/// <summary>
/// Clone with a transform, used by input
/// </summary>
internal StylusPointCollection Clone(GeneralTransform transform, StylusPointDescription descriptionToUse)
{
return(this.Clone(transform, descriptionToUse, this.Count));
}
/// <summary>
/// Returns a StylusPointCollection object for processing the data in the packet.
/// This method creates a new StylusPointCollection and copies the data.
/// </summary>
public StylusPointCollection GetStylusPoints(IInputElement relativeTo, StylusPointDescription subsetToReformatTo)
{
return(StylusDeviceImpl.GetStylusPoints(relativeTo, subsetToReformatTo));
}
/// <summary>
/// StylusPointCollection
/// </summary>
public StylusPointCollection()
{
_stylusPointDescription = new StylusPointDescription();
}
public StylusPointCollection GetStylusPoints(System.Windows.IInputElement relativeTo, StylusPointDescription subsetToReformatTo)
{
return(default(StylusPointCollection));
}
/// <summary>
/// Helper that transforms and scales in one go
/// </summary>
internal StylusPointCollection Reformat(StylusPointDescription subsetToReformatTo, GeneralTransform transform)
{
if (!subsetToReformatTo.IsSubsetOf(this.Description))
{
throw new ArgumentException(SR.Get(SRID.InvalidStylusPointDescriptionSubset), "subsetToReformatTo");
}
StylusPointDescription subsetToReformatToWithCurrentMetrics =
StylusPointDescription.GetCommonDescription(subsetToReformatTo,
this.Description); //preserve metrics from this spd
if (StylusPointDescription.AreCompatible(this.Description, subsetToReformatToWithCurrentMetrics) &&
(transform is Transform) && ((Transform)transform).IsIdentity)
{
//subsetToReformatTo might have different x, y, p metrics
return(this.Clone(transform, subsetToReformatToWithCurrentMetrics));
}
//
// we really need to reformat this...
//
StylusPointCollection newCollection = new StylusPointCollection(subsetToReformatToWithCurrentMetrics, this.Count);
int additionalDataCount = subsetToReformatToWithCurrentMetrics.GetExpectedAdditionalDataCount();
ReadOnlyCollection <StylusPointPropertyInfo> properties
= subsetToReformatToWithCurrentMetrics.GetStylusPointProperties();
bool isIdentity = (transform is Transform) ? ((Transform)transform).IsIdentity : false;
for (int i = 0; i < this.Count; i++)
{
StylusPoint stylusPoint = this[i];
double xCoord = stylusPoint.X;
double yCoord = stylusPoint.Y;
float pressure = stylusPoint.GetUntruncatedPressureFactor();
if (!isIdentity)
{
Point p = new Point(xCoord, yCoord);
transform.TryTransform(p, out p);
xCoord = p.X;
yCoord = p.Y;
}
int[] newData = null;
if (additionalDataCount > 0)
{
//don't init, we'll do that below
newData = new int[additionalDataCount];
}
StylusPoint newStylusPoint =
new StylusPoint(xCoord, yCoord, pressure, subsetToReformatToWithCurrentMetrics, newData, false, false);
//start at 3, skipping x, y, pressure
for (int x = StylusPointDescription.RequiredCountOfProperties /*3*/; x < properties.Count; x++)
{
int value = stylusPoint.GetPropertyValue(properties[x]);
newStylusPoint.SetPropertyValue(properties[x], value, false /*copy on write*/);
}
//bypass validation
((List <StylusPoint>)newCollection.Items).Add(newStylusPoint);
}
return(newCollection);
}
/// <summary>
/// Returns a new StylusPointDescription with the common StylusPointProperties from both
/// </summary>
/// <param name="stylusPointDescription">stylusPointDescription</param>
/// <param name="stylusPointDescriptionPreserveInfo">stylusPointDescriptionPreserveInfo</param>
/// <remarks>The StylusPointProperties from stylusPointDescriptionPreserveInfo will be returned in the new StylusPointDescription</remarks>
public static StylusPointDescription GetCommonDescription(StylusPointDescription stylusPointDescription, StylusPointDescription stylusPointDescriptionPreserveInfo)
{
if (stylusPointDescription == null)
{
throw new ArgumentNullException("stylusPointDescription");
}
if (stylusPointDescriptionPreserveInfo == null)
{
throw new ArgumentNullException("stylusPointDescriptionPreserveInfo");
}
#pragma warning disable 6506 // if a StylusPointDescription is not null, then _stylusPointPropertyInfos is not null.
//
// ignore X, Y, Pressure - they are guaranteed to be the first3 members
//
Debug.Assert(stylusPointDescription._stylusPointPropertyInfos.Length >= 3 &&
stylusPointDescription._stylusPointPropertyInfos[0].Id == StylusPointPropertyIds.X &&
stylusPointDescription._stylusPointPropertyInfos[1].Id == StylusPointPropertyIds.Y &&
stylusPointDescription._stylusPointPropertyInfos[2].Id == StylusPointPropertyIds.NormalPressure);
Debug.Assert(stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos.Length >= 3 &&
stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[0].Id == StylusPointPropertyIds.X &&
stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[1].Id == StylusPointPropertyIds.Y &&
stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[2].Id == StylusPointPropertyIds.NormalPressure);
//add x, y, p
List<StylusPointPropertyInfo> commonProperties = new List<StylusPointPropertyInfo>();
commonProperties.Add(stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[0]);
commonProperties.Add(stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[1]);
commonProperties.Add(stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[2]);
//add common properties
for (int x = RequiredCountOfProperties; x < stylusPointDescription._stylusPointPropertyInfos.Length; x++)
{
for (int y = RequiredCountOfProperties; y < stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos.Length; y++)
{
if (StylusPointPropertyInfo.AreCompatible( stylusPointDescription._stylusPointPropertyInfos[x],
stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[y]))
{
commonProperties.Add(stylusPointDescriptionPreserveInfo._stylusPointPropertyInfos[y]);
}
}
}
#pragma warning restore 6506
return new StylusPointDescription(commonProperties);
}
public StylusPointCollection GetStylusPoints(IInputElement relativeTo,
StylusPointDescription subsetReformatTo)
{
throw new NotImplementedException();
}
/// <summary>
/// Loads packets from the input stream. For example, packets are all of the x's in a stroke
/// </summary>
#endif
static uint LoadPackets(Stream inputStream,
uint totalBytesInStrokeBlockOfIsfStream,
#if OLD_ISF
Compressor compressor,
#endif
StylusPointDescription stylusPointDescription,
Matrix transform,
out StylusPointCollection stylusPoints)
{
stylusPoints = null;
if (0 == totalBytesInStrokeBlockOfIsfStream)
return 0;
uint locallyDecodedBytesRemaining = totalBytesInStrokeBlockOfIsfStream;
uint localBytesRead;
// First read the no of packets
uint pointCount;
localBytesRead = SerializationHelper.Decode(inputStream, out pointCount);
if (locallyDecodedBytesRemaining < localBytesRead)
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Invalid ISF data"));
locallyDecodedBytesRemaining -= localBytesRead;
if (0 == locallyDecodedBytesRemaining)
return localBytesRead;
// Allocate packet properties
int intsPerPoint = stylusPointDescription.GetInputArrayLengthPerPoint();
int buttonCount = stylusPointDescription.ButtonCount;
int buttonIntsPerPoint = (buttonCount > 0 ? 1 : 0);
int valueIntsPerPoint = intsPerPoint - buttonIntsPerPoint;
//add one int per point for button data if it exists
int[] rawPointData = new int[pointCount * intsPerPoint];
int[] packetDataSet = new int[pointCount];
// copy the rest of the data from the stroke data
byte[] inputBuffer = new byte[locallyDecodedBytesRemaining];
// Read the input data into the byte array
uint bytesRead = StrokeCollectionSerializer.ReliableRead(inputStream, inputBuffer, locallyDecodedBytesRemaining);
if ( bytesRead != locallyDecodedBytesRemaining )
{
// Make sure the bytes read are expected. If not, we should bail out.
// An exception will be thrown.
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Invalid ISF data"));
}
// at this point, we have read all of the bytes remaining in the input
// stream's packet block, and while we will keep the bytes remaining
// variable for positioning within the local byte buffer, we should
// not read from the stream again, or we risk reading into another
// ISF tag's block.
int originalPressureIndex = stylusPointDescription.OriginalPressureIndex;
for (int i = 0; i < valueIntsPerPoint && locallyDecodedBytesRemaining > 0; i++)
{
localBytesRead = locallyDecodedBytesRemaining;
Compressor.DecompressPacketData(
#if OLD_ISF
compressor,
#endif
inputBuffer,
ref localBytesRead,
packetDataSet);
if (localBytesRead > locallyDecodedBytesRemaining)
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Invalid ISF data"));
//
// packetDataSet is like this:
// -------------
// |X|X|X|X|X|X|
// -------------
//
// we need to copy into rawPointData at
//
// -------------
// |X| |X| |X| |
// -------------
//
// additionally, for NormalPressure, if it exists and was
// reordered in the StylusPointDescription, we need to account for that here
//
int tempi = i;
if (tempi > 1 &&
originalPressureIndex != -1 &&
originalPressureIndex != StylusPointDescription.RequiredPressureIndex/*2*/)
{
//
// NormalPressure exists in the packet stream and was not at index 2
// StylusPointDescription enforces that NormalPressure is at index 2
// so we need to copy packet data beyond X and Y into a different location
//
// take the example of the original StylusPointDescription
// |X|Y|XTilt|YTilt|NormalPressure|Rotation|
//
// originalPressureIndex is 4, and we know it is now 2
// which means that everything before index 4 has been shifted one
// and everything after index 4 is still good. Index 4 should be copied to index 2
if (tempi == originalPressureIndex)
{
tempi = 2;
}
else if (tempi < originalPressureIndex)
{
tempi++;
}
}
locallyDecodedBytesRemaining -= localBytesRead;
for (int j = 0, x = 0; j < pointCount; j++, x += intsPerPoint)
{
rawPointData[x + tempi] = packetDataSet[j];
}
// Move the array elements to point to next set of compressed data
for (uint u = 0; u < locallyDecodedBytesRemaining; u++)
{
inputBuffer[u] = inputBuffer[u + (int)localBytesRead];
}
}
// Now that we've read packet data, we must read button data if it is there
byte[] buttonData = null;
// since the button state is a simple bit value (either down or up), the button state
// for a series of packets is packed into an array of bits rather than integers
// For example, if there are 16 packets, and 2 buttons, then 32 bits can be used (e.g. 1 32-bit integer)
if (0 != locallyDecodedBytesRemaining && buttonCount > 0)
{
// calculate the number of full bytes used for buttons per packet
// Example: 10 buttons would require 1 full byte
int fullBytesForButtonsPerPacket = buttonCount / Native.BitsPerByte;
// calculate the number of bits that spill beyond the full byte boundary
// Example: 10 buttons would require 2 extra bits (8 fit in a full byte)
int partialBitsForButtonsPerPacket = buttonCount % Native.BitsPerByte;
// Now figure out how many bytes we need to read for the button data
localBytesRead = (uint)((buttonCount * pointCount + 7) / Native.BitsPerByte);
if (localBytesRead > locallyDecodedBytesRemaining)
{
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Buffer range is smaller than expected expected size"));
}
locallyDecodedBytesRemaining -= localBytesRead;
int buttonSizeInBytes = (buttonCount + 7)/Native.BitsPerByte;
buttonData = new byte[pointCount * buttonSizeInBytes];
// Create a bit reader to unpack the bits from the ISF stream into
// loosely packed byte buffer (e.g. button data aligned on full byte
// boundaries only)
BitStreamReader bitReader =
new BitStreamReader(inputBuffer, (uint)buttonCount * pointCount);
// unpack the button data into each packet
int byteCounter = 0;
while (!bitReader.EndOfStream)
{
// unpack the fully bytes first
for (int fullBytes = 0; fullBytes < fullBytesForButtonsPerPacket; fullBytes++)
{
buttonData[byteCounter++] = bitReader.ReadByte(Native.BitsPerByte);
}
// then unpack a single partial byte if necessary
if (partialBitsForButtonsPerPacket > 0)
{
buttonData[byteCounter++] = bitReader.ReadByte((int)partialBitsForButtonsPerPacket);
}
}
// if the number of bytes allocated != necessary byte amount then an error occurred
if (byteCounter != buttonData.Length)
{
throw new ArgumentException(StrokeCollectionSerializer.ISFDebugMessage("Button data length not equal to expected length"));
}
//
// set the point data in the raw array
//
FillButtonData( (int)pointCount,
buttonCount,
valueIntsPerPoint, //gives the first button index
rawPointData,
buttonData);
}
stylusPoints = new StylusPointCollection(stylusPointDescription, rawPointData, null, transform);
// if we read too far into the stream (e.g. the packets were compressed)
// then move the stream pointer back to the end of the actual packet
// data before returning. This keeps the return value on the function
// (representing bytes read) honest and consistent with the stream
// position movement in this function.
if (0 != locallyDecodedBytesRemaining)
{
inputStream.Seek(0 - (long)locallyDecodedBytesRemaining, SeekOrigin.Current);
}
return totalBytesInStrokeBlockOfIsfStream - locallyDecodedBytesRemaining;
}
/////////////////////////////////////////////////////////////////////
/// <summary>
/// Returns a StylusPointCollection for processing the data from input.
/// This method creates a new StylusPointCollection and copies the data.
/// </summary>
public StylusPointCollection GetStylusPoints(IInputElement relativeTo, StylusPointDescription subsetToReformatTo)
{
return StylusDevice.GetStylusPoints(relativeTo, subsetToReformatTo);
}
/// <summary>
/// StylusPoint
/// </summary>
/// <param name="x">x</param>
/// <param name="y">y</param>
/// <param name="pressureFactor">pressureFactor</param>
/// <param name="stylusPointDescription">stylusPointDescription</param>
/// <param name="additionalValues">additionalValues</param>
public StylusPoint(double x, double y, float pressureFactor, StylusPointDescription stylusPointDescription, int[] additionalValues)
: this(x, y, pressureFactor, stylusPointDescription, additionalValues, true, true)
{
}
/// <summary> /// Returns a StylusPointCollection object for processing the data in the packet. /// This method creates a new StylusPointCollection and copies the data. /// </summary> internal abstract StylusPointCollection GetStylusPoints(IInputElement relativeTo, StylusPointDescription subsetToReformatTo);
/// <summary>
/// internal ctor
/// </summary>
internal StylusPoint(
double x,
double y,
float pressureFactor,
StylusPointDescription stylusPointDescription,
int[] additionalValues,
bool validateAdditionalData,
bool validatePressureFactor)
{
if (Double.IsNaN(x))
{
throw new ArgumentOutOfRangeException("x", SR.Get(SRID.InvalidStylusPointXYNaN));
}
if (Double.IsNaN(y))
{
throw new ArgumentOutOfRangeException("y", SR.Get(SRID.InvalidStylusPointXYNaN));
}
//we don't validate pressure when called by StylusPointDescription.Reformat
if (validatePressureFactor &&
(pressureFactor == Single.NaN || pressureFactor < 0.0f || pressureFactor > 1.0f))
{
throw new ArgumentOutOfRangeException("pressureFactor", SR.Get(SRID.InvalidPressureValue));
}
//
// only accept values between MaxXY and MinXY
// we don't throw when passed a value outside of that range, we just silently trunctate
//
_x = GetClampedXYValue(x);
_y = GetClampedXYValue(y);
_stylusPointDescription = stylusPointDescription;
_additionalValues = additionalValues;
_pressureFactor = pressureFactor;
if (validateAdditionalData)
{
//
// called from the public verbose ctor
//
if (null == stylusPointDescription)
{
throw new ArgumentNullException("stylusPointDescription");
}
//
// additionalValues can be null if PropertyCount == 3 (X, Y, P)
//
if (stylusPointDescription.PropertyCount > StylusPointDescription.RequiredCountOfProperties &&
null == additionalValues)
{
throw new ArgumentNullException("additionalValues");
}
if (additionalValues != null)
{
ReadOnlyCollection <StylusPointPropertyInfo> properties
= stylusPointDescription.GetStylusPointProperties();
int expectedAdditionalValues = properties.Count - StylusPointDescription.RequiredCountOfProperties; //for x, y, pressure
if (additionalValues.Length != expectedAdditionalValues)
{
throw new ArgumentException(SR.Get(SRID.InvalidAdditionalDataForStylusPoint), "additionalValues");
}
//
// any buttons passed in must each be in their own int. We need to
// pack them all into one int here
//
int[] newAdditionalValues =
new int[stylusPointDescription.GetExpectedAdditionalDataCount()];
_additionalValues = newAdditionalValues;
for (int i = StylusPointDescription.RequiredCountOfProperties, j = 0; i < properties.Count; i++, j++)
{
//
// use SetPropertyValue, it validates buttons, but does not copy the
// int[] on writes (since we pass the bool flag)
//
SetPropertyValue(properties[i], additionalValues[j], false /*copy on write*/);
}
}
}
}
/////////////////////////////////////////////////////////////////////
/// <summary>
/// Returns a StylusPointCollection object for processing the data in the packet.
/// This method creates a new StylusPointCollection and copies the data.
/// </summary>
public StylusPointCollection GetStylusPoints(IInputElement relativeTo, StylusPointDescription subsetToReformatTo)
{
if (null == subsetToReformatTo)
{
throw new ArgumentNullException("subsetToReformatTo");
}
// Fake up an empty one if we have to.
if (_eventStylusPoints == null)
{
return new StylusPointCollection(subsetToReformatTo);
}
return _eventStylusPoints.Reformat(subsetToReformatTo, GetElementTransform(relativeTo));
}
private void GetPacketData
(
Stroke stroke,
out MS.Win32.Recognizer.PACKET_DESCRIPTION packetDescription,
out int countOfBytes,
out IntPtr packets,
out NativeMethods.XFORM xForm
)
{
int i;
countOfBytes = 0;
packets = IntPtr.Zero;
packetDescription = new MS.Win32.Recognizer.PACKET_DESCRIPTION();
Matrix matrix = Matrix.Identity;
xForm = new NativeMethods.XFORM((float)(matrix.M11), (float)(matrix.M12), (float)(matrix.M21),
(float)(matrix.M22), (float)(matrix.OffsetX), (float)(matrix.OffsetY));
StylusPointCollection stylusPoints = stroke.StylusPoints;
if (stylusPoints.Count == 0)
{
return; //we'll fail when the calling routine sees that packets is IntPtr.Zer
}
if (stylusPoints.Description.PropertyCount > StylusPointDescription.RequiredCountOfProperties)
{
//
// reformat to X, Y, P
//
StylusPointDescription reformatDescription
= new StylusPointDescription(
new StylusPointPropertyInfo[]{
new StylusPointPropertyInfo(StylusPointProperties.X),
new StylusPointPropertyInfo(StylusPointProperties.Y),
stylusPoints.Description.GetPropertyInfo(StylusPointProperties.NormalPressure)});
stylusPoints = stylusPoints.Reformat(reformatDescription);
}
//
// now make sure we only take a finite amount of data for the stroke
//
if (stylusPoints.Count > MaxStylusPoints)
{
stylusPoints = stylusPoints.Clone(MaxStylusPoints);
}
Guid[] propertyGuids = new Guid[]{ StylusPointPropertyIds.X, //required index for SPD
StylusPointPropertyIds.Y, //required index for SPD
StylusPointPropertyIds.NormalPressure}; //required index for SPD
Debug.Assert(stylusPoints != null);
Debug.Assert(propertyGuids.Length == StylusPointDescription.RequiredCountOfProperties);
// Get the packet description
packetDescription.cbPacketSize = (uint)(propertyGuids.Length * Marshal.SizeOf(typeof(Int32)));
packetDescription.cPacketProperties = (uint)propertyGuids.Length;
//
// use X, Y defaults for metrics, sometimes mouse metrics can be bogus
// always use NormalPressure metrics, though.
//
StylusPointPropertyInfo[] infosToUse = new StylusPointPropertyInfo[StylusPointDescription.RequiredCountOfProperties];
infosToUse[StylusPointDescription.RequiredXIndex] = StylusPointPropertyInfoDefaults.X;
infosToUse[StylusPointDescription.RequiredYIndex] = StylusPointPropertyInfoDefaults.Y;
infosToUse[StylusPointDescription.RequiredPressureIndex] =
stylusPoints.Description.GetPropertyInfo(StylusPointProperties.NormalPressure);
MS.Win32.Recognizer.PACKET_PROPERTY[] packetProperties =
new MS.Win32.Recognizer.PACKET_PROPERTY[packetDescription.cPacketProperties];
StylusPointPropertyInfo propertyInfo;
for ( i = 0; i < packetDescription.cPacketProperties; i++ )
{
packetProperties[i].guid = propertyGuids[i];
propertyInfo = infosToUse[i];
MS.Win32.Recognizer.PROPERTY_METRICS propertyMetrics = new MS.Win32.Recognizer.PROPERTY_METRICS( );
propertyMetrics.nLogicalMin = propertyInfo.Minimum;
propertyMetrics.nLogicalMax = propertyInfo.Maximum;
propertyMetrics.Units = (int)(propertyInfo.Unit);
propertyMetrics.fResolution = propertyInfo.Resolution;
packetProperties[i].PropertyMetrics = propertyMetrics;
}
unsafe
{
int allocationSize = (int)(Marshal.SizeOf(typeof(MS.Win32.Recognizer.PACKET_PROPERTY)) * packetDescription.cPacketProperties);
packetDescription.pPacketProperties = Marshal.AllocCoTaskMem(allocationSize);
MS.Win32.Recognizer.PACKET_PROPERTY* pPacketProperty =
(MS.Win32.Recognizer.PACKET_PROPERTY*)(packetDescription.pPacketProperties.ToPointer());
MS.Win32.Recognizer.PACKET_PROPERTY* pElement = pPacketProperty;
for ( i = 0 ; i < packetDescription.cPacketProperties ; i ++ )
{
Marshal.StructureToPtr(packetProperties[i], new IntPtr(pElement), false);
pElement++;
}
}
// Get packet data
int[] rawPackets = stylusPoints.ToHiMetricArray();
int packetCount = rawPackets.Length;
if (packetCount != 0)
{
countOfBytes = packetCount * Marshal.SizeOf(typeof(Int32));
packets = Marshal.AllocCoTaskMem(countOfBytes);
Marshal.Copy(rawPackets, 0, packets, packetCount);
}
}
private void InitStylusPointDescription()
{
int cProps;
int cButtons;
int pressureIndex = -1;
// Make sure we are never called on the application thread when we need to talk
// to penimc or else we can cause reentrancy!
Debug.Assert(!_contexts._inputSource.Value.CheckAccess());
// We should always have a valid IPimcContext2 interface pointer.
Debug.Assert(_pimcContext != null && _pimcContext.Value != null);
_pimcContext.Value.GetPacketDescriptionInfo(out cProps, out cButtons); // Calls Unmanaged code - SecurityCritical with SUC.
List <StylusPointPropertyInfo> propertyInfos = new List <StylusPointPropertyInfo>(cProps + cButtons + 3);
for (int i = 0; i < cProps; i++)
{
Guid guid;
int min, max;
int units;
float res;
_pimcContext.Value.GetPacketPropertyInfo(i, out guid, out min, out max, out units, out res); // Calls Unmanaged code - SecurityCritical with SUC.
if (pressureIndex == -1 && guid == StylusPointPropertyIds.NormalPressure)
{
pressureIndex = i;
}
if (_statusPropertyIndex == -1 && guid == StylusPointPropertyIds.PacketStatus)
{
_statusPropertyIndex = i;
}
StylusPointPropertyInfo propertyInfo = new StylusPointPropertyInfo(new StylusPointProperty(guid, false), min, max, (StylusPointPropertyUnit)units, res);
propertyInfos.Add(propertyInfo);
}
Debug.Assert(_statusPropertyIndex != -1); // We should always see this.
// Make sure we actually created propertyInfos OK
if (propertyInfos != null)
{
for (int i = 0; i < cButtons; i++)
{
Guid buttonGuid;
_pimcContext.Value.GetPacketButtonInfo(i, out buttonGuid); // Calls Unmanaged code - SecurityCritical with SUC.
StylusPointProperty buttonProperty = new StylusPointProperty(buttonGuid, true);
StylusPointPropertyInfo buttonInfo = new StylusPointPropertyInfo(buttonProperty);
propertyInfos.Add(buttonInfo);
}
//validate we can never get X, Y at index != 0, 1
Debug.Assert(propertyInfos[StylusPointDescription.RequiredXIndex /*0*/].Id == StylusPointPropertyIds.X, "X isn't where we expect it! Fix PenImc to ask for X at index 0");
Debug.Assert(propertyInfos[StylusPointDescription.RequiredYIndex /*0*/].Id == StylusPointPropertyIds.Y, "Y isn't where we expect it! Fix PenImc to ask for Y at index 1");
Debug.Assert(pressureIndex == -1 || pressureIndex == StylusPointDescription.RequiredPressureIndex /*2*/,
"Fix PenImc to ask for NormalPressure at index 2!");
if (pressureIndex == -1)
{
//pressure wasn't found. Add it
propertyInfos.Insert(StylusPointDescription.RequiredPressureIndex /*2*/, StylusPointPropertyInfoDefaults.NormalPressure);
}
_infoX = propertyInfos[0];
_infoY = propertyInfos[1];
_stylusPointDescription = new StylusPointDescription(propertyInfos, pressureIndex);
}
}
/// <summary>
/// Returns true if the two StylusPointDescriptions have the same StylusPointProperties. Metrics are ignored.
/// </summary>
/// <param name="stylusPointDescription1">stylusPointDescription1</param>
/// <param name="stylusPointDescription2">stylusPointDescription2</param>
public static bool AreCompatible(StylusPointDescription stylusPointDescription1, StylusPointDescription stylusPointDescription2)
{
if (stylusPointDescription1 == null || stylusPointDescription2 == null)
{
throw new ArgumentNullException("stylusPointDescription");
}
#pragma warning disable 6506 // if a StylusPointDescription is not null, then _stylusPointPropertyInfos is not null.
//
// ignore X, Y, Pressure - they are guaranteed to be the first3 members
//
Debug.Assert( stylusPointDescription1._stylusPointPropertyInfos.Length >= RequiredCountOfProperties &&
stylusPointDescription1._stylusPointPropertyInfos[0].Id == StylusPointPropertyIds.X &&
stylusPointDescription1._stylusPointPropertyInfos[1].Id == StylusPointPropertyIds.Y &&
stylusPointDescription1._stylusPointPropertyInfos[2].Id == StylusPointPropertyIds.NormalPressure);
Debug.Assert( stylusPointDescription2._stylusPointPropertyInfos.Length >= RequiredCountOfProperties &&
stylusPointDescription2._stylusPointPropertyInfos[0].Id == StylusPointPropertyIds.X &&
stylusPointDescription2._stylusPointPropertyInfos[1].Id == StylusPointPropertyIds.Y &&
stylusPointDescription2._stylusPointPropertyInfos[2].Id == StylusPointPropertyIds.NormalPressure);
if (stylusPointDescription1._stylusPointPropertyInfos.Length != stylusPointDescription2._stylusPointPropertyInfos.Length)
{
return false;
}
for (int x = RequiredCountOfProperties; x < stylusPointDescription1._stylusPointPropertyInfos.Length; x++)
{
if (!StylusPointPropertyInfo.AreCompatible(stylusPointDescription1._stylusPointPropertyInfos[x], stylusPointDescription2._stylusPointPropertyInfos[x]))
{
return false;
}
}
#pragma warning restore 6506
return true;
}