private HidContactInfo CreateContact(HidContactState state, int id, int x, int y, int width, int height)
{
long timestamp = Stopwatch.GetTimestamp();
ContactData data = new ContactData();
data.Id = id;
data.Position = new Point(x, y);
data.MajorAxis = width;
data.MinorAxis = height;
data.Area = width * height;
Contact contact = new Contact(data, IntPtr.Zero, timestamp);
HidContactInfo hidContactInfo = new HidContactInfo(state, contact);
return(hidContactInfo);
}
void contactHandler_Frame(object sender, FrameEventArgs e)
{
foreach (Contact contact in e.Contacts)
{
HidContactInfo contactInfo;
switch (contact.State)
{
case ContactState.New:
contactInfo = new HidContactInfo(HidContactState.Adding, contact);
break;
case ContactState.Moved:
contactInfo = new HidContactInfo(HidContactState.Updated, contact);
break;
case ContactState.Removed:
contactInfo = new HidContactInfo(HidContactState.Removing, contact);
break;
default:
throw new ArgumentOutOfRangeException();
}
communicator.Enqueue(contactInfo);
}
}
public void TwoContactsToBytes()
{
MultiTouchReport report = new MultiTouchReport(2, true);
Point point = HidContactInfo.GetPoint(new Point(2, 3));
report.Contacts.Add(CreateContact(HidContactState.Updated, 1, 2, 3, 4, 5));
report.Contacts.Add(CreateContact(HidContactState.Updated, 2, 2, 3, 4, 5));
const int expectedPresure = 4 * 5;
report.ToBytes();
byte[] data = report.Data;
BinaryReader reader = new BinaryReader(new MemoryStream(data));
Assert.AreEqual(3, reader.ReadByte()); //tip, inrange
Assert.AreEqual(0, reader.ReadByte()); //
Assert.AreEqual(Convert.ToUInt16(point.X), reader.ReadUInt16()); // x
Assert.AreEqual(Convert.ToUInt16(point.Y), reader.ReadUInt16()); // y
Assert.AreEqual(expectedPresure, reader.ReadUInt16()); // pressure
Assert.AreEqual(4, reader.ReadUInt16()); // width
Assert.AreEqual(5, reader.ReadUInt16()); // height
Assert.AreEqual(1, reader.ReadUInt16()); // id
Assert.AreEqual(3, reader.ReadByte()); //tip, inrange
Assert.AreEqual(0, reader.ReadByte()); //
Assert.AreEqual(Convert.ToUInt16(point.X), reader.ReadUInt16()); // x
Assert.AreEqual(Convert.ToUInt16(point.Y), reader.ReadUInt16()); // y
Assert.AreEqual(expectedPresure, reader.ReadUInt16()); // pressure
Assert.AreEqual(4, reader.ReadUInt16()); // width
Assert.AreEqual(5, reader.ReadUInt16()); // height
Assert.AreEqual(2, reader.ReadUInt16()); // id
Assert.AreEqual(2, reader.ReadByte());
}
/// <summary>
/// Append a contact to the list of contacts in this report. Note you cannot call this more than 'MaxContactsPerReport' per report.
/// </summary>
/// <param name="pContact">The contact to add.</param>
public void addContact(HidContactInfo pContact)
{
// If we have reached the maximum number of contacts - throw an error.
if (lContacts.Count == MaxContactsPerReport)
throw new InvalidOperationException("Cannot add more than " + MaxContactsPerReport + " to a MultiTouchReport.");
// All is well so add it.
lContacts.Add(pContact);
}
/// <summary>
/// This is called to enqueue a HID contact onto the list to send out.
/// </summary>
/// <param name="contactInfo"></param>
private void enqueueContact(HidContactInfo pContact)
{
// Obtain mutual exclusion over the queue.
this.pContactLock.WaitOne();
// Add it to the queue.
this.lCurrentContacts.Enqueue(pContact);
// Release exclusion.
this.pContactLock.ReleaseMutex();
}
public void Enqueue(HidContactInfo contactInfo)
{
lock (lockCurrentContacts)
{
currentContacts.Enqueue(contactInfo);
}
}
private HidContactInfo CreateContact(HidContactState state, int id, int x, int y, int width, int height)
{
long timestamp = Stopwatch.GetTimestamp();
ContactData data = new ContactData();
data.Id = id;
data.Position = new Point(x, y);
data.MajorAxis = width;
data.MinorAxis = height;
data.Area = width * height;
Contact contact = new Contact(data, IntPtr.Zero, timestamp);
HidContactInfo hidContactInfo = new HidContactInfo(state, contact);
return hidContactInfo;
}