public ScrollViewerLayouter(ScrollContentPresenter view) : base(view)
{
}
private void UpdateProperties(ScrollViewer sv)
{
// find child
_scrollViewer = sv;
_presenter = _scrollViewer.FindFirstChild<ScrollContentPresenter>();
_container = (Grid)VisualTreeHelper.GetParent(_presenter);
// add indicator
_indicator = new PullToRefreshIndicator();
_indicator.Height = IndicatorHeight;
_indicator.VerticalAlignment = VerticalAlignment.Top;
_indicator.RenderTransform = new TranslateTransform { Y = -IndicatorHeight };
_indicator.Visibility = IsRefreshEnabled ? Visibility.Visible : Visibility.Collapsed;
_container.Children.Insert(0, _indicator);
// update properties
_container.SizeChanged += Grid_SizeChanged;
_container.Clip = new RectangleGeometry { Rect = new Rect(0, 0, _container.ActualWidth, _container.ActualHeight) };
_presenter.ManipulationMode = ManipulationModes.TranslateY | ManipulationModes.TranslateRailsY |
ManipulationModes.TranslateInertia | ManipulationModes.System;
_presenter.ManipulationStarting += ScrollContentPresenter_OnManipulationStarting;
_presenter.ManipulationInertiaStarting += ScrollContentPresenter_OnManipulationInertiaStarting;
_presenter.ManipulationDelta += ScrollContentPresenter_OnManipulationDelta;
_presenter.ManipulationCompleted += ScrollContentPresenter_OnManipulationCompleted;
_presenter.RenderTransform = new TranslateTransform();
_presenter.Background = new SolidColorBrush(Colors.Transparent);
}
public ScrollContentPresenterManipulationManager(ScrollContentPresenter scrollPresenter)
{
_scrollPresenter = scrollPresenter;
}