support for .NET framework 3.5

Still have bugs
2019-01-21 00:43:10 +08:00
1 parent 5878039e21
commit 7d6b491f25
@@ -0,0 +1,56 @@
+using System.Windows;
+using System.Windows.Media;
+using System.Windows.Media.Effects;
+
+namespace HandyControl.Interactivity
+{
+    public abstract class TransitionEffect : ShaderEffect
+    {
+        // Fields
+        public static readonly DependencyProperty InputProperty =
+            RegisterPixelShaderSamplerProperty("Input", typeof(TransitionEffect), 0, SamplingMode.NearestNeighbor);
+
+        public static readonly DependencyProperty OldImageProperty =
+            RegisterPixelShaderSamplerProperty("OldImage", typeof(TransitionEffect), 1, SamplingMode.NearestNeighbor);
+
+        public static readonly DependencyProperty ProgressProperty = DependencyProperty.Register("Progress",
+            typeof(double), typeof(TransitionEffect), new PropertyMetadata(0.0, PixelShaderConstantCallback(0)));
+
+        // Methods
+        protected TransitionEffect()
+        {
+            UpdateShaderValue(InputProperty);
+            UpdateShaderValue(OldImageProperty);
+            UpdateShaderValue(ProgressProperty);
+        }
+
+        // Properties
+        public Brush Input
+        {
+            get =>
+                (Brush) GetValue(InputProperty);
+            set => SetValue(InputProperty, value);
+        }
+
+        public Brush OldImage
+        {
+            get =>
+                (Brush) GetValue(OldImageProperty);
+            set => SetValue(OldImageProperty, value);
+        }
+
+        public double Progress
+        {
+            get =>
+                (double) GetValue(ProgressProperty);
+            set => SetValue(ProgressProperty, value);
+        }
+
+        public new TransitionEffect CloneCurrentValue()
+        {
+            return (TransitionEffect) base.CloneCurrentValue();
+        }
+
+        protected abstract TransitionEffect DeepCopy();
+    }
+}