Implemented LightTouch ScrollViewer !!

2 files changed, 53 insertions, 0 deletions

diff --git a/Software/Visual_Studio/Tango.Touch/Converters/ScrollViewerScrollBarVisibilityConverter.cs b/Software/Visual_Studio/Tango.Touch/Converters/ScrollViewerScrollBarVisibilityConverter.cs
new file mode 100644
index 000000000..d477feeb3
--- /dev/null
+++ b/Software/Visual_Studio/Tango.Touch/Converters/ScrollViewerScrollBarVisibilityConverter.cs
@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Data;
+
+namespace Tango.Touch.Converters
+{
+    public class ScrollViewerScrollBarVisibilityConverter : IMultiValueConverter
+    {
+        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
+        {
+            double scroll_viewer_height = (double)values[0];
+            double content_height = (double)values[1];
+            return content_height > scroll_viewer_height ? Visibility.Visible : Visibility.Collapsed;
+        }
+
+        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}
diff --git a/Software/Visual_Studio/Tango.Touch/Converters/ScrollViewerThumbSizeConverter.cs b/Software/Visual_Studio/Tango.Touch/Converters/ScrollViewerThumbSizeConverter.cs
new file mode 100644
index 000000000..5307f6509
--- /dev/null
+++ b/Software/Visual_Studio/Tango.Touch/Converters/ScrollViewerThumbSizeConverter.cs
@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Data;
+
+namespace Tango.Touch.Converters
+{
+    public class ScrollViewerThumbSizeConverter : IMultiValueConverter
+    {
+        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
+        {
+            double scroll_viewer_height = (double)values[0];
+            double content_height = (double)values[1];
+
+            var viewableRatio = scroll_viewer_height / content_height;
+            return scroll_viewer_height * viewableRatio;
+        }
+
+        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}