static void RaiseCaptureEvent(Contact contact, RoutedEvent routedEvent, DependencyObject source, long timestamp)
{
ContactEventArgs args = new ContactEventArgs(contact, timestamp);
args.RoutedEvent = routedEvent;
args.Source = source;
MultitouchLogic.RaiseEvent(source, args);
}
public ElementRoutedEventArgs(FrameworkElement element, Point offset, ContactEventArgs e)
{
contactEventArgs = e;
contact = e.Contact;
this.element = element;
this.offset = offset;
}
void OnLostContactCapture(object sender, ContactEventArgs e)
{
IsDragging = false;
RaiseEvent(new DragCompletedEventArgs(screenTotalDelta.X, screenTotalDelta.Y, false));
originalThumbPosition.X = 0.0;
originalThumbPosition.Y = 0.0;
}
void OnContactMoved(object sender, ContactEventArgs e)
{
if(IsDragging)
{
Point currentPosition = e.GetPosition(this);
if (currentPosition != lastThumbPosition)
{
e.Handled = true;
RaiseEvent(new DragDeltaEventArgs(currentPosition.X - lastThumbPosition.X, currentPosition.Y - lastThumbPosition.Y));
lastThumbPosition = currentPosition;
}
}
}
void InvokeHandler(ContactEventHandler handler, ContactEventArgs e)
{
if (handler != null)
{
handler(this, e);
if (executeOnNextContact != null)
{
Action<Contact> action = executeOnNextContact;
executeOnNextContact = null;
action(e.Contact);
}
}
}
void OnContactRemoved(object sender, ContactEventArgs e)
{
if (ClickMode != ClickMode.Hover)
{
e.Handled = true;
if (e.Contact.Captured == this)
{
e.Contact.ReleaseCapture();
if (MultitouchScreen.GetContactsCaptured(this).Count() == 0)
{
StopTimer();
IsPressed = false;
}
}
}
}
void OnContactRemoved(object sender, ContactEventArgs e)
{
if (ClickMode != ClickMode.Hover)
{
e.Handled = true;
if (e.Contact.Captured == this)
{
bool shouldMakeClick = IsPressed && ClickMode == ClickMode.Release;
e.Contact.ReleaseCapture();
if (MultitouchScreen.GetContactsCaptured(this).Count() == 0)
{
if(shouldMakeClick)
OnClick();
IsPressed = false;
}
}
}
}
void OnGotContactCapture(object sender, ContactEventArgs e)
{
if (!IsDragging)
{
IsDragging = true;
screenTotalDelta = new Vector();
originalThumbPosition = e.GetPosition(this);
lastThumbPosition = originalThumbPosition;
bool failed = true;
try
{
RaiseEvent(new DragStartedEventArgs(originalThumbPosition.X, originalThumbPosition.Y));
failed = false;
}
finally
{
if (failed)
CancelDrag();
}
}
}
void OnGotContactCapture(object sender, ContactEventArgs e)
{
FrameworkElement element = (FrameworkElement)e.Source;
FrameworkElement container = ItemsControl.ContainerFromElement(null, element) as FrameworkElement;
if (container != null)
element = container;
Body body;
if (elementToBody.TryGetValue(element, out body))
{
Point position = e.GetPosition(this);
Vector2D contactPoint = position.ToVector2D();
if (body.Shape.CanGetIntersection)
{
Vector2D temp = body.Matrices.ToBody * contactPoint;
IntersectionInfo intersectionInfo;
if (body.Shape.TryGetIntersection(temp, out intersectionInfo))
{
FixedHingeJoint joint = new FixedHingeJoint(body, contactPoint, new Lifespan());
joint.Softness = 0.3;
engine.AddJoint(joint);
contactJoints[e.Contact.Id] = joint;
}
}
}
SetZTop(element);
}
static void OnContactRemoved(object sender, ContactEventArgs e)
{
if (e.Contact.Captured == e.Source)
e.Contact.Capture(null);
}
void OnContactRemoved(object sender, ContactEventArgs e)
{
e.Handled = true;
if (e.Contact.Captured == this)
e.Contact.Capture(null);
}
void OnContactMoved(object sender, ContactEventArgs e)
{
Point position = e.GetPosition(this);
FixedHingeJoint joint;
if (contactJoints.TryGetValue(e.Contact.Id, out joint))
{
joint.Anchor = position.ToVector2D();
//scale
Body body = joint.Bodies.First();
FrameworkElement frameworkElement = body.Tag as FrameworkElement;
if (frameworkElement != null && GetIsScalable(frameworkElement))
{
ScaleState state;
if (elementToScale.TryGetValue(frameworkElement, out state))
{
IEnumerable<Contact> contacts = MultitouchScreen.GetContactsCaptured((IInputElement)e.Source);
double previousDistance = 0;
double currentDistance = 0;
int divisor = 0;
Contact[] contactsArray = contacts.ToArray();
Point center = new Point(frameworkElement.ActualWidth / 2, frameworkElement.ActualHeight / 2);
for (int i = 0; i < contactsArray.Length; i++)
{
for (int j = i + 1; j < contactsArray.Length; j++)
{
Point currFirst = contactsArray[j].GetPosition(this);
Point currSecond = contactsArray[i].GetPosition(this);
Vector vector = frameworkElement.PointFromScreen(currFirst) - frameworkElement.PointFromScreen(currSecond);
currentDistance += vector.Length;
Point prevFirst = contactsArray[j].GetPoints(this).FirstOrDefault();
if (default(Point) == prevFirst)
prevFirst = currFirst;
Point prevSecond = contactsArray[i].GetPoints(this).FirstOrDefault();
if (default(Point) == prevSecond)
prevSecond = currSecond;
Vector previousVector = frameworkElement.PointFromScreen(prevFirst) - frameworkElement.PointFromScreen(prevSecond);
previousDistance += previousVector.Length;
divisor++;
}
}
if (divisor == 0)
divisor = 1;
previousDistance /= divisor;
currentDistance /= divisor;
double delta = currentDistance / previousDistance;
if (double.IsNaN(delta))
delta = 1;
var newScale = state.Scale * delta;
if (newScale > MaxScale)
delta = MaxScale / state.Scale;
else if (newScale < MinScale)
delta = MinScale / state.Scale;
state.Scale *= delta;
state.Center = center;
body.Transformation *= Matrix2x3.FromScale(new Vector2D(delta, delta));
}
}
}
}
public void createButton_Click(object sender, ContactEventArgs e)
{
//if (this.appState != APPSTATE_DEFAULT) return;
/*
Int32 id = this.nodes.Keys.Count;
Node n = new Node(MainGrid, new System.Windows.Point(600, 600),
this, id);
this.nodes.Add(id, n);
*/
Node created = new Node(mainGrid, new Point(300, 300), this, nodes.Count);
nodes.Add(created);
/* Node n = Node.ForWPFContext(this, MainGrid);
this.nodes.Add(n.data.id, n);*/
}
private void list1_ContactMoved(object sender, ContactEventArgs e)
{
Contacts1.Remove(e.Contact);
Contacts1.Add(e.Contact);
}
void OnContactRemoved(object sender, ContactEventArgs e)
{
InvokeHandler(ContactRemoved, e);
}
public void editButton_Click(object sender, ContactEventArgs e)
{
if (this.appState == APPSTATE_CHOOSE_NODE_TO_EDIT)
{
this.changeAppStateTo(APPSTATE_DEFAULT);
//get rid of the popup here
return;
}
//to me this is disabling potential gestures since we're changing the state anyways. are there interum states we aren't covering?
/*if (this.appState != APPSTATE_DEFAULT)
return;
*/
this.changeAppStateTo(APPSTATE_CHOOSE_NODE_TO_EDIT);
}
void OnContactMoved(object sender, ContactEventArgs e)
{
HitTestResult hitTestResult = VisualTreeHelper.HitTest(this, e.GetPosition(this));
if (hitTestResult != null) return;
if (contactElements.ContainsKey(e.Contact.Id) && eltOffset.ContainsKey(contactElements[e.Contact.Id]))
{
var contactElement = contactElements[e.Contact.Id] as FrameworkElement;
var offset = eltOffset[contactElements[e.Contact.Id]];
eltOffset.Remove(contactElements[e.Contact.Id]);
RaiseElementDraggedEvent(contactElement, offset, e);
e.Contact.ReleaseCapture();
}
}
void OnContactLeave(object sender, ContactEventArgs e)
{
InvokeHandler(ContactLeave, e);
}
private void list1_ContactEnter(object sender, ContactEventArgs e)
{
Contacts1.Add(e.Contact);
}
private void list1_ContactLeave(object sender, ContactEventArgs e)
{
Contacts1.Remove(e.Contact);
}
private void list1_ContactEnter(object sender, ContactEventArgs e)
{
Contacts1.Add(e.Contact);
}
void OnLostContactCapture(object sender, ContactEventArgs e)
{
FixedHingeJoint removedJoint;
if (contactJoints.TryGetValue(e.Contact.Id, out removedJoint))
{
removedJoint.Lifetime.IsExpired = true;
contactJoints.Remove(e.Contact.Id);
}
}
void OnContactLeave(object sender, ContactEventArgs e)
{
HitTestResult htr = VisualTreeHelper.HitTest(this, e.GetPosition(this));
if (htr != null) return;
OnContactRemoved(sender, e);
}
public void trashButton_Click(object sender, ContactEventArgs e)
{
if (this.appState == APPSTATE_CHOOSE_NODE_TO_DELETE)
{
this.changeAppStateTo(APPSTATE_DEFAULT);
//get rid of the popup here
return;
}
/*
if (this.appState != APPSTATE_DEFAULT)
return;*/
this.changeAppStateTo(APPSTATE_CHOOSE_NODE_TO_DELETE);
}
private void list1_ContactMoved(object sender, ContactEventArgs e)
{
Contacts1.Remove(e.Contact);
Contacts1.Add(e.Contact);
}
void OnPreviewContactMoved(object sender, ContactEventArgs e)
{
InvokeHandler(PreviewContactMoved, e);
}
public void connectionButton_Click(object sender, ContactEventArgs e)
{
if (this.appState == APPSTATE_CHOOSE_FIRST_NODE_TO_TOGGLE_CONNECTION ||
this.appState == APPSTATE_CHOOSE_SECOND_NODE_TO_TOGGLE_CONNECTION)
{
this.changeAppStateTo(APPSTATE_DEFAULT);
//get rid of the popup here
return;
}
//if (this.appState != APPSTATE_DEFAULT)
// return;
this.changeAppStateTo(APPSTATE_CHOOSE_FIRST_NODE_TO_TOGGLE_CONNECTION);
}
void OnGotContactCapture(object sender, ContactEventArgs e)
{
InvokeHandler(GotContactCapture, e);
}
private void list1_ContactLeave(object sender, ContactEventArgs e)
{
Contacts1.Remove(e.Contact);
}
void OnContactEnter(object sender, ContactEventArgs e)
{
InvokeHandler(ContactEnter, e);
}
private void RaiseElementDraggedEvent(FrameworkElement element, Point offset, ContactEventArgs e)
{
ElementRoutedEventArgs newEventArgs = new ElementRoutedEventArgs(element, offset, e);
newEventArgs.RoutedEvent = ElementDraggedEvent;
RaiseEvent(newEventArgs);
}
private void button_ContactRemoved(object sender, ContactEventArgs e)
{
Button b = (Button)sender;
b.Background = Brushes.White;
b.Foreground = Brushes.DarkTurquoise;
}
void OnContactRemoved(object sender, ContactEventArgs e)
{
if (e.Contact.Id == firstContactId)
{
scrollJoint.Lifetime.IsExpired = true;
scrollJoint = null;
firstContactId = null;
}
}