Separate version

Net40/HandyControl_Net40/Controls/Loading/LoadingBase.cs

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+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Media;
+using System.Windows.Media.Animation;
+using System.Windows.Shapes;
+using HandyControl.Data;
+
+
+namespace HandyControl.Controls
+{
+    public abstract class LoadingBase : ContentControl
+    {
+        protected Storyboard Storyboard;
+
+        public static readonly DependencyProperty IsRunningProperty = DependencyProperty.Register(
+            "IsRunning", typeof(bool), typeof(LoadingBase), new PropertyMetadata(ValueBoxes.TrueBox, (o, args) =>
+            {
+                var ctl = (LoadingBase) o;
+                var v = (bool) args.NewValue;
+                if (v)
+                {
+                    ctl.Storyboard?.Resume();
+                }
+                else
+                {
+                    ctl.Storyboard?.Pause();
+                }
+            }));
+
+        public bool IsRunning
+        {
+            get => (bool) GetValue(IsRunningProperty);
+            set => SetValue(IsRunningProperty, value);
+        }
+
+        public static readonly DependencyProperty DotCountProperty = DependencyProperty.Register(
+            "DotCount", typeof(int), typeof(LoadingBase),
+            new FrameworkPropertyMetadata(5, FrameworkPropertyMetadataOptions.AffectsRender));
+
+        public static readonly DependencyProperty DotIntervalProperty = DependencyProperty.Register(
+            "DotInterval", typeof(double), typeof(LoadingBase),
+            new FrameworkPropertyMetadata(10.0, FrameworkPropertyMetadataOptions.AffectsRender));
+
+        public static readonly DependencyProperty DotBorderBrushProperty = DependencyProperty.Register(
+            "DotBorderBrush", typeof(Brush), typeof(LoadingBase),
+            new FrameworkPropertyMetadata(default(Brush), FrameworkPropertyMetadataOptions.AffectsRender));
+
+        public static readonly DependencyProperty DotBorderThicknessProperty = DependencyProperty.Register(
+            "DotBorderThickness", typeof(double), typeof(LoadingBase),
+            new FrameworkPropertyMetadata(ValueBoxes.Double0Box, FrameworkPropertyMetadataOptions.AffectsRender));
+
+        public static readonly DependencyProperty DotDiameterProperty = DependencyProperty.Register(
+            "DotDiameter", typeof(double), typeof(LoadingBase),
+            new FrameworkPropertyMetadata(6.0, FrameworkPropertyMetadataOptions.AffectsRender));
+
+        public static readonly DependencyProperty DotSpeedProperty = DependencyProperty.Register(
+            "DotSpeed", typeof(double), typeof(LoadingBase),
+            new FrameworkPropertyMetadata(4.0, FrameworkPropertyMetadataOptions.AffectsRender));
+
+        public static readonly DependencyProperty DotDelayTimeProperty = DependencyProperty.Register(
+            "DotDelayTime", typeof(double), typeof(LoadingBase),
+            new FrameworkPropertyMetadata(80.0, FrameworkPropertyMetadataOptions.AffectsRender));
+
+        protected readonly Canvas PrivateCanvas = new Canvas
+        {
+            ClipToBounds = true
+        };
+
+        protected LoadingBase()
+        {
+            Content = PrivateCanvas;
+        }
+
+        public int DotCount
+        {
+            get => (int) GetValue(DotCountProperty);
+            set => SetValue(DotCountProperty, value);
+        }
+
+        public double DotInterval
+        {
+            get => (double) GetValue(DotIntervalProperty);
+            set => SetValue(DotIntervalProperty, value);
+        }
+
+        public Brush DotBorderBrush
+        {
+            get => (Brush) GetValue(DotBorderBrushProperty);
+            set => SetValue(DotBorderBrushProperty, value);
+        }
+
+        public double DotBorderThickness
+        {
+            get => (double) GetValue(DotBorderThicknessProperty);
+            set => SetValue(DotBorderThicknessProperty, value);
+        }
+
+        public double DotDiameter
+        {
+            get => (double) GetValue(DotDiameterProperty);
+            set => SetValue(DotDiameterProperty, value);
+        }
+
+        public double DotSpeed
+        {
+            get => (double) GetValue(DotSpeedProperty);
+            set => SetValue(DotSpeedProperty, value);
+        }
+
+        public double DotDelayTime
+        {
+            get => (double) GetValue(DotDelayTimeProperty);
+            set => SetValue(DotDelayTimeProperty, value);
+        }
+
+        protected abstract void UpdateDots();
+
+        protected override void OnRender(DrawingContext drawingContext)
+        {
+            base.OnRender(drawingContext);
+            UpdateDots();
+        }
+
+        protected Ellipse CreateEllipse(int index)
+        {
+            var ellipse = new Ellipse();
+            ellipse.SetBinding(WidthProperty, new Binding(DotDiameterProperty.Name) {Source = this});
+            ellipse.SetBinding(HeightProperty, new Binding(DotDiameterProperty.Name) {Source = this});
+            ellipse.SetBinding(Shape.FillProperty, new Binding(ForegroundProperty.Name) {Source = this});
+            ellipse.SetBinding(Shape.StrokeThicknessProperty, new Binding(DotBorderThicknessProperty.Name) {Source = this});
+            ellipse.SetBinding(Shape.StrokeProperty, new Binding(DotBorderBrushProperty.Name) {Source = this});
+            return ellipse;
+        }
+    }
+}