Finalized client-side storage

src/Artemis.UI/Controls/Visualizers/LedVisualizer.cs

@@ -1,5 +1,6 @@
 using System.Windows;
 using System.Windows.Controls;
+using System.Windows.Media;
 using RGB.NET.Core;
 
 namespace Artemis.UI.Controls.Visualizers
@@ -32,5 +33,15 @@ namespace Artemis.UI.Controls.Visualizers
         // ReSharper restore InconsistentNaming
 
         #endregion
+
+        public void Select()
+        {
+            BorderBrush = new SolidColorBrush(Colors.RoyalBlue);
+        }
+
+        public void Deselect()
+        {
+            BorderBrush = new SolidColorBrush(Colors.Black);
+        }
     }
 }

src/Artemis.UI/Controls/Visualizers/RGBDeviceVisualizer.cs

@@ -18,8 +18,8 @@ namespace Artemis.UI.Controls.Visualizers
         #endregion
 
         #region Properties & Fields
-
-        private Canvas _canvas;
+        
+        public Canvas Canvas { get; private set; }
 
         #endregion
 
@@ -51,7 +51,7 @@ namespace Artemis.UI.Controls.Visualizers
         /// <inheritdoc />
         public override void OnApplyTemplate()
         {
-            _canvas = (Canvas) GetTemplateChild(PART_CANVAS);
+            Canvas = (Canvas) GetTemplateChild(PART_CANVAS);
 
             LayoutLeds();
         }
@@ -63,14 +63,14 @@ namespace Artemis.UI.Controls.Visualizers
 
         private void LayoutLeds()
         {
-            if (_canvas == null) return;
+            if (Canvas == null) return;
 
-            _canvas.Children.Clear();
+            Canvas.Children.Clear();
 
             if (Device == null) return;
 
             foreach (Led led in Device)
-                _canvas.Children.Add(new LedVisualizer {Led = led});
+                Canvas.Children.Add(new LedVisualizer {Led = led});
         }
 
         #endregion

src/Artemis.UI/Controls/Visualizers/RGBSurfaceVisualizer.cs

@@ -1,7 +1,14 @@
 using System.Collections.Generic;
+using System.Linq;
 using System.Windows;
 using System.Windows.Controls;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using Artemis.UI.Adorners;
 using RGB.NET.Core;
+using RGB.NET.Groups;
+using Point = System.Windows.Point;
 
 namespace Artemis.UI.Controls.Visualizers
 {
@@ -22,6 +29,8 @@ namespace Artemis.UI.Controls.Visualizers
 
         private RGBSurface _surface;
         private Canvas _canvas;
+        private BoundingBoxAdorner _boundingBox;
+        private Point _startingPoint;
 
         //TODO DarthAffe 17.06.2017: This is ugly - redesign how device connect/disconnect is generally handled!
         private readonly List<IRGBDevice> _newDevices = new List<IRGBDevice>();
@@ -74,9 +83,70 @@ namespace Artemis.UI.Controls.Visualizers
         /// <inheritdoc />
         public override void OnApplyTemplate()
         {
+            // Detach any existing event handlers
+            if (_canvas != null)
+            {
+                _canvas.MouseLeftButtonDown -= ScrollViewerOnMouseLeftButtonDown;
+                _canvas.MouseLeftButtonUp -= ScrollViewerOnMouseLeftButtonUp;
+            }
             _canvas?.Children.Clear();
-            _canvas = (Canvas)GetTemplateChild(PART_CANVAS);
+            _canvas = (Canvas) GetTemplateChild(PART_CANVAS);
+
             UpdateSurface();
+
+            if (_canvas == null) return;
+            _canvas.MouseLeftButtonDown += ScrollViewerOnMouseLeftButtonDown;
+            _canvas.MouseLeftButtonUp += ScrollViewerOnMouseLeftButtonUp;
+            _canvas.MouseMove += ScrollViewerOnMouseMove;
+        }
+
+
+        private void ScrollViewerOnMouseLeftButtonDown(object sender, MouseButtonEventArgs mouseButtonEventArgs)
+        {
+            _canvas.CaptureMouse();
+            _startingPoint = mouseButtonEventArgs.GetPosition(_canvas);
+            _boundingBox = new BoundingBoxAdorner(_canvas, Colors.RoyalBlue);
+
+            var adornerLayer = AdornerLayer.GetAdornerLayer(_canvas);
+            adornerLayer.Add(_boundingBox);
+        }
+
+        private void ScrollViewerOnMouseLeftButtonUp(object sender, MouseButtonEventArgs mouseButtonEventArgs)
+        {
+            _canvas.ReleaseMouseCapture();
+            var adornerLayer = AdornerLayer.GetAdornerLayer(_canvas);
+            var adorners = adornerLayer.GetAdorners(_canvas);
+            if (adorners == null) return;
+            foreach (var adorner in adorners)
+                adornerLayer.Remove(adorner);
+
+            _boundingBox = null;
+        }
+
+        private void ScrollViewerOnMouseMove(object sender, MouseEventArgs mouseEventArgs)
+        {
+            if (_boundingBox == null) return;
+            var currentPoint = mouseEventArgs.GetPosition(_canvas);
+            _boundingBox.Update(_startingPoint, currentPoint);
+
+            var ledStart = new RGB.NET.Core.Point(_startingPoint.X, _startingPoint.Y);
+            var ledEnd = new RGB.NET.Core.Point(currentPoint.X, currentPoint.Y);
+            var selection = new RectangleLedGroup(ledStart, ledEnd, 0.1);
+
+            // Deselect all LED of each device
+            var deviceLeds = new List<LedVisualizer>();
+            foreach (var rgbDeviceVisualizer in _canvas.Children.Cast<RGBDeviceVisualizer>())
+                deviceLeds.AddRange(rgbDeviceVisualizer.Canvas.Children.Cast<LedVisualizer>());
+
+            foreach (var ledVisualizer in deviceLeds)
+                ledVisualizer?.Deselect();
+
+            // Select all LEDs in the bounding box
+            foreach (var led in selection.GetLeds())
+            {
+                var ledVisualizer = deviceLeds.FirstOrDefault(l => l.Led == led);
+                ledVisualizer?.Select();
+            }
         }
 
         private void UpdateSurface()
@@ -86,7 +156,7 @@ namespace Artemis.UI.Controls.Visualizers
             if (_newDevices.Count > 0)
             {
                 foreach (IRGBDevice device in _newDevices)
-                    _canvas.Children.Add(new RGBDeviceVisualizer { Device = device });
+                    _canvas.Children.Add(new RGBDeviceVisualizer {Device = device});
                 _newDevices.Clear();
             }
 
@@ -96,4 +166,4 @@ namespace Artemis.UI.Controls.Visualizers
 
         #endregion
     }
-}
+}