private void CheckMouseDragged(Func <MouseState, ButtonState> getButtonState, MouseButton button)
{
if ((getButtonState(_currentState) == ButtonState.Pressed) &&
(getButtonState(_previousState) == ButtonState.Pressed))
{
var args = new MouseEventArgs(ViewportAdapter, _gameTime.TotalGameTime, _previousState, _currentState, button);
if (_mouseDownArgs.Button == args.Button)
{
if (_dragging)
{
MouseDrag?.Invoke(this, args);
}
else
{
// Only start to drag based on DragThreshold
var clickMovement = DistanceBetween(args.Position, _mouseDownArgs.Position);
if (clickMovement > DragThreshold)
{
_dragging = true;
MouseDragStart?.Invoke(this, args);
}
}
}
}
}
private void _mouseListener_MouseDragStart(object sender, MouseEventArgs e)
{
_scene?.FireMouseDragStart(e);
MouseDragStart?.Invoke(sender, e);
#if DEBUG
Logger.Log("Mouse drag start.");
#endif
}
internal void FireMouseDragStart(MouseEventArgs e)
{
OnMouseDragStart(e);
MouseDragStart?.Invoke(this, e);
}
