private TouchCollection GetState()
{
TouchCollection actualState = Microsoft.Xna.Framework.Input.Touch.TouchPanel.GetState();
TouchLocation[] locations = new TouchLocation[1];
if (actualState.Count > 0)
{
TouchLocation location = actualState[0];
TouchLocation previousState;
location.TryGetPreviousLocation(out previousState);
if (previousState.State == TouchLocationState.Pressed)
{
locations[0] = new TouchLocation(previousState.Id, TouchLocationState.Pressed, location.Position);
}
else
{
locations[0] = location;
}
previousLocation = location;
return(new TouchCollection(locations));
}
else if (previousLocation.State == TouchLocationState.Moved)
{
locations[0] = new TouchLocation(previousLocation.Id, TouchLocationState.Released, previousLocation.Position);
previousLocation = new TouchLocation();
return(new TouchCollection(locations));
}
return(new TouchCollection(empty));
}
/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
verboseTouches.Clear();
TouchCollection touchs = TouchPanel.GetState();
if (touchs.Count > 0)
{
for (int i = 0; i < touchs.Count; i++)
{
TouchLocation tl = touchs[i];
verboseTouches.Add("Id: " + tl.Id);
TouchLocation ptl;
if (tl.TryGetPreviousLocation(out ptl))
{
verboseTouches.Add(String.Format("Prev: ({0}, {1})", ptl.Position.X, ptl.Position.Y));
}
verboseTouches.Add(String.Format("Position: ({0}, {1})", tl.Position.X, tl.Position.Y));
verboseTouches.Add("State: " + tl.State.ToString());
verboseTouches.Add("--------------");
}
}
else
{
verboseTouches.Add("Push the screen");
verboseTouches.Add("to view the position");
}
base.Update(gameTime);
}
public override void Update(float elapsed)
{
#if PLATFORM_WINDOWS
this.touchCollection = new TouchCollection();
#else
this.touchCollection = TouchPanel.GetState();
#endif
MouseState mouse = Mouse.GetState();
Vector2 currentMousePosition = new Vector2(mouse.X, mouse.Y);
Vector2 previousMousePosition = new Vector2(previousMouse.X, previousMouse.Y);
TouchLocationState mouseState = TouchLocationState.Invalid;
if (mouse.LeftButton == ButtonState.Pressed)
{
if ((currentMousePosition - previousMousePosition).LengthSquared() > 0)
{
mouseState = TouchLocationState.Moved;
}
if (previousMouse.LeftButton != ButtonState.Pressed)
{
mouseID--;
mouseState = TouchLocationState.Pressed;
}
}
else if (previousMouse.LeftButton == ButtonState.Pressed)
{
mouseState = TouchLocationState.Released;
}
TouchLocation[] result = new TouchLocation[this.touchCollection.Count + (mouseState != TouchLocationState.Invalid?1:0)];
for (int i = 0; i < this.touchCollection.Count; i++)
{
TouchLocation p, l = this.touchCollection [i];
if (l.TryGetPreviousLocation(out p))
{
result [i] = new TouchLocation(l.Id, l.State, Vector2.Transform(l.Position, this.invertedWorld), p.State, Vector2.Transform(p.Position, this.invertedWorld));
}
else
{
result [i] = new TouchLocation(l.Id, l.State, Vector2.Transform(l.Position, this.invertedWorld));
}
}
if (mouseState != TouchLocationState.Invalid)
{
result [result.Length - 1] = new TouchLocation(mouseID, mouseState, Vector2.Transform(currentMousePosition, this.invertedWorld), mousePrevState, Vector2.Transform(previousMousePosition, this.invertedWorld));
}
this.touchCollection = new TouchCollection(result);
mousePrevState = mouseState;
previousMouse = mouse;
base.Update(elapsed);
}
public bool ProcessTouch(TouchLocation touch)
{
if (Texture == null)
{
return(false);
}
bool touchHandled = false;
switch (touch.State)
{
case TouchLocationState.Pressed:
if ((touch.Position.X > Position.X - Origin.X) &&
(touch.Position.X < Position.X - Origin.X + Texture.Width) &&
(touch.Position.Y > Position.Y - Origin.Y) &&
(touch.Position.Y < Position.Y - Origin.Y + Texture.Height))
{
touchId = touch.Id;
touchHandled = true;
}
break;
case TouchLocationState.Moved:
if (touchId.HasValue && touchId.Value == touch.Id)
{
TouchLocation previousTouch;
touch.TryGetPreviousLocation(out previousTouch);
Position += touch.Position - previousTouch.Position;
// Fire the event!
if (PositionChanged != null)
{
PositionChanged(this, EventArgs.Empty);
}
touchHandled = true;
}
break;
case TouchLocationState.Released:
if (touchId.HasValue && touchId.Value == touch.Id)
{
touchId = null;
touchHandled = true;
}
break;
}
return(touchHandled);
}
public void AgeStateUpdatesPreviousDetails([Values(true, false)] bool isSameFrameReleased)
{
var touch = new TouchLocation(1, TouchLocationState.Pressed, new Vector2(1, 2), TimeSpan.FromSeconds(1));
if (isSameFrameReleased)
{
touch.SameFrameReleased = true;
}
touch.AgeState();
TouchLocation previous;
Assert.True(touch.TryGetPreviousLocation(out previous));
Assert.AreEqual(TouchLocationState.Pressed, previous.State);
Assert.AreEqual(touch.Id, previous.Id);
Assert.AreEqual(touch.Position, previous.Position);
Assert.AreEqual(touch.Timestamp, previous.Timestamp);
}
public void Update(Camera cam)
{
camera = cam;
// Clear all lists
touchPoints.Clear();
PressPoints.Clear();
ClickPoints.Clear();
// Update touch state
TouchCollection touchCollection = TouchPanel.GetState();
// Add touches to list
foreach (TouchLocation touch in touchCollection)
{
touchPoints.Add(touch);
}
if (touchPoints.Count == 0)
{
// See if any release states were missed
foreach (TouchLocation touch in prevTouchPoints)
{
if (touch.State == TouchLocationState.Pressed)
{
ClickPoints.Add(touch.Position);
}
else if (touch.State == TouchLocationState.Moved)
{
TouchLocation prevTouch;
if (touch.TryGetPreviousLocation(out prevTouch))
{
var delta = touch.Position - prevTouch.Position;
// Allow some errors
if (delta.LengthSquared() < 2)
{
ClickPoints.Add(touch.Position);
}
}
}
}
swipeDirection = Vector2.Zero;
}
else if (touchPoints.Count == 1)
{
TouchLocation touch = touchPoints[0];
if ((touch.State == TouchLocationState.Moved) || (touch.State == TouchLocationState.Pressed))
{
TouchLocation prevTouch;
// Sometimes TryGetPreviousLocation can fail
if (touch.TryGetPreviousLocation(out prevTouch))
{
// Get swiping direction
swipeDirection = touch.Position - prevTouch.Position;
}
else
{
PressPoints.Add(touch.Position);
}
}
else if (touch.State == TouchLocationState.Released)
{
TouchLocation prevTouch;
if (touch.TryGetPreviousLocation(out prevTouch))
{
var delta = touch.Position - prevTouch.Position;
// Allow some errors
if (delta.LengthSquared() < 2)
{
ClickPoints.Add(touch.Position);
}
}
else
{
ClickPoints.Add(touch.Position);
}
}
}
else if (touchCollection.Count == 2)
{
// TODO
}
else
{
// TODO
}
// Update previous state
prevTouchPoints.Clear();
prevTouchPoints.AddRange(touchPoints);
}