//****************************************************************
// Event Handling - Methods for handling events
//
// The dispatch manager updates the focus nodes based on the
// incoming events, and dispatches those events to the appropriate
// focus nodes.
//****************************************************************
/// <summary>
/// Create a new PInputEvent based on the next windows event and dispatch it to Piccolo.
/// </summary>
public virtual void ProcessInput()
{
if (nextInput == null)
{
return;
}
PInputEventArgs e = new PInputEventArgs(this, nextInput, nextType);
//The EventArgs object for a Click event does not provide the position, so
//we just ignore it here.
if (e.IsMouseEvent || e.IsDragDropEvent)
{
lastCanvasPosition = currentCanvasPosition;
if (e.IsMouseEvent)
{
currentCanvasPosition = new PointFx(((MouseEventArgs)nextInput).X, ((MouseEventArgs)nextInput).Y);
}
else
{
Point pt = new Point((int)((DragEventArgs)nextInput).X, (int)((DragEventArgs)nextInput).Y);
Point tPt = nextWindowsSource.PointToClient(pt);
currentCanvasPosition = new PointFx(tPt.X, tPt.Y);
}
PPickPath pickPath = nextInputSource.Pick(currentCanvasPosition.X, currentCanvasPosition.Y, 1);
MouseOver = pickPath;
}
nextInput = null;
nextInputSource = null;
Dispatch(e);
}
/// <summary>
/// Process the given windows event from the camera.
/// </summary>
/// <param name="e">The windows event to be processed.</param>
/// <param name="type">The type of windows event being processed.</param>
/// <param name="camera">The camera from which to process the windows event.</param>
/// <param name="canvas">The source of the windows event being processed.</param>
public virtual void ProcessEventFromCamera(EventArgs e, PInputType type, PCamera camera, PCanvas canvas)
{
nextInput = e;
nextType = type;
nextInputSource = camera;
nextWindowsSource = canvas;
camera.Root.ProcessInputs();
}
/// <summary>
/// Remove the camera at the given index from this layer's camera list.
/// </summary>
/// <param name="index">The index of the camera to remove.</param>
/// <returns>The removed camera.</returns>
public virtual PCamera RemoveCamera(int index)
{
PCamera camera = cameras[index];
cameras.RemoveAt(index);
InvalidatePaint();
FirePropertyChangedEvent(PROPERTY_KEY_CAMERAS, PROPERTY_CODE_CAMERAS, null, cameras);
return(camera);
}
//****************************************************************
// Serialization - Layers conditionally serialize their cameras.
// This means that only the camera references that were unconditionally
// (using GetObjectData) serialized by someone else will be restored
// when the layer is unserialized.
//****************************************************************
/// <summary>
/// Read this this layer and all its children from the given SerializationInfo.
/// </summary>
/// <param name="info">The SerializationInfo to read from.</param>
/// <param name="context">
/// The StreamingContext of this serialization operation.
/// </param>
/// <remarks>
/// This constructor is required for Deserialization.
/// </remarks>
protected PLayer(SerializationInfo info, StreamingContext context)
: base(info, context)
{
cameras = new PCameraList();
int count = info.GetInt32("cameraCount");
for (int i = 0; i < count; i++)
{
PCamera camera = (PCamera)info.GetValue("camera" + i, typeof(PCamera));
if (camera != null)
{
cameras.Add(camera);
}
}
}
/// <summary>
/// Constructs a new PCameraTransformTarget.
/// </summary>
/// <param name="target">The target camera.</param>
public PCameraTransformTarget(PCamera target)
{
this.target = target;
}
/// <summary>
/// Remove the camera from this layer's camera list.
/// </summary>
/// <param name="camera">The camera to remove.</param>
/// <returns>The removed camera.</returns>
public virtual PCamera RemoveCamera(PCamera camera)
{
return(RemoveCamera(cameras.IndexOf(camera)));
}
/// <summary>
/// Add a camera to this layer's camera list at the specified index.
/// </summary>
/// <param name="index">The index at which to add the new layer.</param>
/// <param name="camera">The new camera to add.</param>
/// <remarks>
/// This method it called automatically when a layer is added to a camera.
/// </remarks>
public virtual void AddCamera(int index, PCamera camera)
{
cameras.Insert(index, camera);
InvalidatePaint();
FirePropertyChangedEvent(PROPERTY_KEY_CAMERAS, PROPERTY_CODE_CAMERAS, null, cameras);
}
/// <summary>
/// Add a camera to this layer's camera list.
/// </summary>
/// <param name="camera">The new camera to add.</param>
/// <remarks>
/// This method it called automatically when a layer is added to a camera.
/// </remarks>
public virtual void AddCamera(PCamera camera)
{
AddCamera(CameraCount, camera);
}