LunarMind/RecentFileScrollViewer.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;

namespace SHomeWorkshop.LunarMind
{
    public class RecentFileScrollViewer : ScrollViewer
    {
        //Register a DependencyProperty which has a onChange callback
        public static DependencyProperty CurrentVerticalOffsetProperty = DependencyProperty.Register("CurrentVerticalOffset", typeof(double), typeof(RecentFileScrollViewer), new PropertyMetadata(new PropertyChangedCallback(OnVerticalChanged)));
        public static DependencyProperty CurrentHorizontalOffsetProperty = DependencyProperty.Register("CurrentHorizontalOffsetOffset", typeof(double), typeof(RecentFileScrollViewer), new PropertyMetadata(new PropertyChangedCallback(OnHorizontalChanged)));

        //When the DependencyProperty is changed change the vertical offset, thus 'animating' the scrollViewer
        private static void OnVerticalChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            RecentFileScrollViewer viewer = d as RecentFileScrollViewer;
            viewer.ScrollToVerticalOffset((double)e.NewValue);
        }

        //When the DependencyProperty is changed change the vertical offset, thus 'animating' the scrollViewer
        private static void OnHorizontalChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            RecentFileScrollViewer viewer = d as RecentFileScrollViewer;
            viewer.ScrollToHorizontalOffset((double)e.NewValue);
        }


        public double CurrentHorizontalOffset
        {
            get { return (double)this.GetValue(CurrentHorizontalOffsetProperty); }
            set { this.SetValue(CurrentHorizontalOffsetProperty, value); }
        }

        public double CurrentVerticalOffset
        {
            get { return (double)this.GetValue(CurrentVerticalOffsetProperty); }
            set { this.SetValue(CurrentVerticalOffsetProperty, value); }
        }

    }
}