private void Element_MouseWheel(object sender, System.Windows.Input.MouseWheelEventArgs args)
{
var position = GetPosition(args);
var buttons = GetMouseButtons(args);
var delta = args.Delta;
MouseWheel?.Invoke(this, new MouseWheelEventArgs(CurrentTime, position, PointerId.FromMouse(PointerId.MouseNoButton), buttons, delta));
}
private void Element_MouseMove(object sender, MouseEventArgs args)
{
var buttons = GetMouseButtons(args);
var id = buttons & FirstMouseButton;
var position = GetPosition(args);
PointerMove?.Invoke(this, new PointerEventArgs(CurrentTime, position, PointerId.FromMouse(id), buttons));
}
internal void Init(PointerId pointerId, Vector2 origin, Vector2 position, TimeSpan time)
{
PointerId = PointerId;
Origin = origin;
Position = position;
Time = time;
Offset = Vector2.Zero;
PointerCapturedBy = null;
Handled = false;
}
private void AnalizeMovement(PointerId pointerId, PointerDownElement pointer, Vector2 move, TimeSpan time)
{
Vector2 drag = pointer.Position - pointer.Origin;
if ((pointer.LockedGesture & (GestureType.HorizontalDrag | GestureType.VerticalDrag | GestureType.Hold | GestureType.HoldStart | GestureType.Down)) == GestureType.None)
{
if (Math.Abs(drag.X) > MinDragSize && Math.Abs(drag.X) > Math.Abs(drag.Y))
{
pointer.LockedGesture = GestureType.HorizontalDrag;
move = drag;
}
else if (Math.Abs(drag.Y) > MinDragSize && Math.Abs(drag.Y) > Math.Abs(drag.X))
{
pointer.LockedGesture = GestureType.VerticalDrag;
move = drag;
}
else if (drag.Length() > MinDragSize)
{
pointer.LockedGesture = GestureType.FreeDrag;
move = drag;
}
}
if ((pointer.LockedGesture & GestureType.DragGestures) != GestureType.None)
{
var offset = move;
if (pointer.LockedGesture.HasFlag(GestureType.HorizontalDrag))
{
offset.Y = 0;
}
if (pointer.LockedGesture.HasFlag(GestureType.VerticalDrag))
{
offset.X = 0;
}
var gesture = gesturesPool.Get();
gesture.Init(pointerId, pointer.Origin, pointer.Position, time);
gesture.GestureType = pointer.LockedGesture & GestureType.DragGestures;
gesture.Offset = offset;
Publish(gesture);
if (!pointer.LockedGesture.HasFlag(GestureType.FreeDrag))
{
gesture = gesturesPool.Get();
gesture.Init(pointerId, pointer.Origin, pointer.Position, time);
gesture.GestureType = GestureType.FreeDrag;
gesture.Offset = move;
Publish(gesture);
}
}
}
private void Element_MouseDown(object sender, MouseButtonEventArgs args)
{
var id = GetMouseButton(args);
var buttons = GetMouseButtons(args);
var position = GetPosition(args);
if (FirstMouseButton == 0)
{
FirstMouseButton = id;
}
PointerDown?.Invoke(this, new PointerEventArgs(CurrentTime, position, PointerId.FromMouse(id), buttons));
}
private void AnalizeHolds(PointerId pointerId, PointerDownElement pointer, TimeSpan time)
{
Vector2 drag = pointer.Position - pointer.Origin;
if (pointer.LockedGesture == GestureType.None && drag.Length() < MinDragSize)
{
TimeSpan elapsed = time - pointer.DownTime;
if (elapsed > HoldStartTime)
{
pointer.LockedGesture = GestureType.HoldStart;
var gesture = gesturesPool.Get();
gesture.Init(pointerId, pointer.Origin, pointer.Position, time);
gesture.GestureType = GestureType.HoldStart;
Publish(gesture);
}
}
else if (pointer.LockedGesture == GestureType.HoldStart)
{
TimeSpan elapsed = time - pointer.DownTime;
if (drag.Length() > MinDragSize)
{
pointer.LockedGesture &= ~GestureType.HoldGestures;
var gesture = gesturesPool.Get();
gesture.Init(pointerId, pointer.Origin, pointer.Position, time);
gesture.GestureType = GestureType.HoldCancel;
Publish(gesture);
return;
}
if (elapsed > HoldTime)
{
pointer.LockedGesture = GestureType.Hold;
var gesture = gesturesPool.Get();
gesture.Init(pointerId, pointer.Origin, pointer.Position, time);
gesture.GestureType = GestureType.Hold;
Publish(gesture);
}
}
}
private void Element_MouseLeave(object sender, MouseEventArgs args)
{
var position = GetPosition(args);
var buttons = GetMouseButtons(args);
if ((buttons & PointerId.MouseLeftButton) != 0)
{
PointerLost?.Invoke(this, new PointerEventArgs(CurrentTime, position, PointerId.FromMouse(PointerId.MouseLeftButton), buttons));
}
if ((buttons & PointerId.MouseRightButton) != 0)
{
PointerLost?.Invoke(this, new PointerEventArgs(CurrentTime, position, PointerId.FromMouse(PointerId.MouseRightButton), buttons));
}
if ((buttons & PointerId.MouseMiddleButton) != 0)
{
PointerLost?.Invoke(this, new PointerEventArgs(CurrentTime, position, PointerId.FromMouse(PointerId.MouseMiddleButton), buttons));
}
PointerLost?.Invoke(this, new PointerEventArgs(CurrentTime, position, PointerId.FromMouse(PointerId.MouseNoButton), buttons));
}
