Build 130105

DrumKit/UI/DrumUI.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Windows.Storage;
+using Windows.UI;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Controls.Primitives;
+using Windows.UI.Xaml.Media;
+using Windows.UI.Xaml.Media.Animation;
+using Windows.UI.Xaml.Media.Imaging;
+
+namespace DrumKit
+{
+    class DrumUI
+    {
+        #region Private attributes
+        private Thumb thumb;
+        private Image image, imagePressed;
+        private Grid grid;
+        private Storyboard hitAnimation;
+        #endregion
+
+        #region Public properties
+        /// <summary>
+        /// Gets the ui element which will be put in a canvas.
+        /// </summary>
+        public FrameworkElement Element { get { return grid; } }
+
+        /// <summary>
+        /// Gets the drum id.
+        /// </summary>
+        public string DrumID { get; private set; }
+
+        public event Windows.UI.Xaml.Input.PointerEventHandler PointerPressed
+        {
+            add {
+                grid.PointerPressed += value;
+            }
+
+            remove {
+                grid.PointerPressed -= value;
+            }
+        }
+
+        public event DragDeltaEventHandler DragDelta
+        {
+            add {
+                thumb.DragDelta += value;
+            }
+
+            remove {
+                thumb.DragDelta -= value;
+            }
+
+        }
+
+        #endregion
+
+        #region Initialization
+        private void GridAddChild(FrameworkElement element)
+        {
+            grid.Children.Add(element);
+            element.HorizontalAlignment = HorizontalAlignment.Stretch;
+            element.VerticalAlignment = VerticalAlignment.Stretch;
+        }
+
+        private void InitializeCreateObjects()
+        {
+            // Create thumb
+            this.thumb = new Thumb()
+            {
+                Background = new SolidColorBrush(Colors.Green),
+                Opacity = .3,
+                Visibility = Visibility.Collapsed
+            };
+
+            // Create image
+            this.image = new Image();
+
+            // Create pressed image
+            this.imagePressed = new Image()
+            {
+                Opacity = 0
+            };
+
+            // Create grid
+            this.grid = new Grid();
+
+            // Create animation
+            DoubleAnimation fade = new DoubleAnimation();
+            fade.Duration = TimeSpan.FromSeconds(.6);
+            fade.From = 1;
+            fade.To = 0;
+
+            Storyboard.SetTarget(fade, this.imagePressed);
+            Storyboard.SetTargetProperty(fade, "Opacity");
+
+            this.hitAnimation = new Storyboard();
+            this.hitAnimation.Children.Add(fade);
+
+            // grid.Resources.Add("hitanimation", this.hitAnimation);
+        }
+
+        private void InitializeParenting()
+        {
+            this.GridAddChild(this.image);
+            this.GridAddChild(this.imagePressed);
+            this.GridAddChild(this.thumb);
+        }
+
+        public async Task InitializeDrum(Drum drum, StorageFolder root)
+        {
+            // Set path
+            Uri rootpath = new Uri(root.Path);
+
+            // Set drum id
+            this.DrumID = drum.Id;
+
+            // Set images
+            this.image.Source = await IOHelper.GetImageAsync(root, drum.ImageSource);
+            this.imagePressed.Source = await IOHelper.GetImageAsync(root, drum.ImagePressedSource);
+
+            // Set tags
+            this.thumb.Tag = drum.Id;
+            this.grid.Tag = drum.Id;
+        }
+
+        #endregion
+
+        public DrumUI()
+        {
+            // Create objects
+            this.InitializeCreateObjects();
+            this.InitializeParenting();
+        }
+
+        public void UpdateLayout(DrumLayout layout, double canvasWidth, double canvasHeight)
+        {
+            // Set up size
+            this.grid.Width = layout.Size * canvasWidth;
+            this.grid.Height = layout.Size * canvasWidth;
+
+            // Set up position
+            Canvas.SetLeft(this.grid, layout.X * canvasWidth);
+            Canvas.SetTop(this.grid, layout.Y * canvasHeight);
+            Canvas.SetZIndex(this.grid, layout.ZIndex);
+
+            // Rotation
+            RotateTransform transform = new RotateTransform();
+            transform.Angle = layout.Angle;
+            transform.CenterX = this.grid.Width / 2;
+            transform.CenterY = this.grid.Height / 2;
+            this.image.RenderTransform = transform;
+            this.imagePressed.RenderTransform = transform;
+        }
+
+        public void Hit()
+        {
+            // Perform a drum hit
+            this.hitAnimation.Begin();
+        }
+
+        public void EnableEdit()
+        {
+            // Thumb becomes visible
+            this.thumb.Visibility = Visibility.Visible;
+        }
+
+        public void DisableEdit()
+        {
+            // Thumb becomes invisible
+            this.thumb.Visibility = Visibility.Collapsed;
+        }
+    }
+}