From 01f43a9ddc6216662bb0796c8c95df1c52445289 Mon Sep 17 00:00:00 2001
From: NaBian <836904362@qq.com>
Date: Thu, 26 Sep 2019 21:58:32 +0800
Subject: [PATCH] Create GeometryKeyFrameCollection.cs

---
 .../Animation/GeometryKeyFrameCollection.cs   | 323 ++++++++++++++++++
 1 file changed, 323 insertions(+)
 create mode 100644 src/Shared/HandyControl_Shared/Media/Animation/GeometryKeyFrameCollection.cs

diff --git a/src/Shared/HandyControl_Shared/Media/Animation/GeometryKeyFrameCollection.cs b/src/Shared/HandyControl_Shared/Media/Animation/GeometryKeyFrameCollection.cs
new file mode 100644
index 00000000..a65a27e4
--- /dev/null
+++ b/src/Shared/HandyControl_Shared/Media/Animation/GeometryKeyFrameCollection.cs
@@ -0,0 +1,323 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Windows;
+
+namespace HandyControl.Media.Animation
+{
+    public class GeometryKeyFrameCollection : Freezable, IList
+    {
+        private List<GeometryKeyFrame> _keyFrames;
+        
+        private static GeometryKeyFrameCollection s_emptyCollection;
+
+        public GeometryKeyFrameCollection()
+        {
+            _keyFrames = new List<GeometryKeyFrame>(2);
+        }
+
+        public static GeometryKeyFrameCollection Empty
+        {
+            get
+            {
+                if (s_emptyCollection == null)
+                {
+                    var emptyCollection = new GeometryKeyFrameCollection
+                    {
+                        _keyFrames = new List<GeometryKeyFrame>(0)
+                    };
+
+                    emptyCollection.Freeze();
+
+                    s_emptyCollection = emptyCollection;
+                }
+
+                return s_emptyCollection;
+            }
+        }
+
+        public new GeometryKeyFrameCollection Clone() => (GeometryKeyFrameCollection)base.Clone();
+
+        protected override Freezable CreateInstanceCore() => new GeometryKeyFrameCollection();
+
+        protected override void CloneCore(Freezable sourceFreezable)
+        {
+            var sourceCollection = (GeometryKeyFrameCollection)sourceFreezable;
+            base.CloneCore(sourceFreezable);
+
+            var count = sourceCollection._keyFrames.Count;
+
+            _keyFrames = new List<GeometryKeyFrame>(count);
+
+            for (var i = 0; i < count; i++)
+            {
+                var keyFrame = (GeometryKeyFrame)sourceCollection._keyFrames[i].Clone();
+                _keyFrames.Add(keyFrame);
+                OnFreezablePropertyChanged(null, keyFrame);
+            }
+        }
+
+        protected override void CloneCurrentValueCore(Freezable sourceFreezable)
+        {
+            var sourceCollection = (GeometryKeyFrameCollection)sourceFreezable;
+            base.CloneCurrentValueCore(sourceFreezable);
+
+            var count = sourceCollection._keyFrames.Count;
+
+            _keyFrames = new List<GeometryKeyFrame>(count);
+
+            for (var i = 0; i < count; i++)
+            {
+                var keyFrame = (GeometryKeyFrame)sourceCollection._keyFrames[i].CloneCurrentValue();
+                _keyFrames.Add(keyFrame);
+                OnFreezablePropertyChanged(null, keyFrame);
+            }
+        }
+
+        protected override void GetAsFrozenCore(Freezable sourceFreezable)
+        {
+            var sourceCollection = (GeometryKeyFrameCollection)sourceFreezable;
+            base.GetAsFrozenCore(sourceFreezable);
+
+            var count = sourceCollection._keyFrames.Count;
+
+            _keyFrames = new List<GeometryKeyFrame>(count);
+
+            for (var i = 0; i < count; i++)
+            {
+                var keyFrame = (GeometryKeyFrame)sourceCollection._keyFrames[i].GetAsFrozen();
+                _keyFrames.Add(keyFrame);
+                OnFreezablePropertyChanged(null, keyFrame);
+            }
+        }
+
+        protected override void GetCurrentValueAsFrozenCore(Freezable sourceFreezable)
+        {
+            var sourceCollection = (GeometryKeyFrameCollection)sourceFreezable;
+            base.GetCurrentValueAsFrozenCore(sourceFreezable);
+
+            var count = sourceCollection._keyFrames.Count;
+
+            _keyFrames = new List<GeometryKeyFrame>(count);
+
+            for (var i = 0; i < count; i++)
+            {
+                var keyFrame = (GeometryKeyFrame)sourceCollection._keyFrames[i].GetCurrentValueAsFrozen();
+                _keyFrames.Add(keyFrame);
+                OnFreezablePropertyChanged(null, keyFrame);
+            }
+        }
+
+        protected override bool FreezeCore(bool isChecking)
+        {
+            var canFreeze = base.FreezeCore(isChecking);
+
+            for (var i = 0; i < _keyFrames.Count && canFreeze; i++)
+            {
+                canFreeze &= Freeze(_keyFrames[i], isChecking);
+            }
+
+            return canFreeze;
+        }
+
+        public IEnumerator GetEnumerator()
+        {
+            ReadPreamble();
+
+            return _keyFrames.GetEnumerator();
+        }
+
+        void ICollection.CopyTo(Array array, int index)
+        {
+            ReadPreamble();
+
+            ((ICollection)_keyFrames).CopyTo(array, index);
+        }
+
+        public void CopyTo(GeometryKeyFrame[] array, int index)
+        {
+            ReadPreamble();
+
+            _keyFrames.CopyTo(array, index);
+        }
+
+        public int Count
+        {
+            get
+            {
+                ReadPreamble();
+
+                return _keyFrames.Count;
+            }
+        }
+        
+        public object SyncRoot
+        {
+            get
+            {
+                ReadPreamble();
+
+                return ((ICollection)_keyFrames).SyncRoot;
+            }
+        }
+
+        public bool IsSynchronized
+        {
+            get
+            {
+                ReadPreamble();
+
+                return IsFrozen || Dispatcher != null;
+            }
+        }
+
+        int IList.Add(object keyFrame) => Add((GeometryKeyFrame)keyFrame);
+
+        public int Add(GeometryKeyFrame keyFrame)
+        {
+            if (keyFrame == null)
+            {
+                throw new ArgumentNullException(nameof(keyFrame));
+            }
+
+            WritePreamble();
+
+            OnFreezablePropertyChanged(null, keyFrame);
+            _keyFrames.Add(keyFrame);
+
+            WritePostscript();
+
+            return _keyFrames.Count - 1;
+        }
+
+        public void Clear()
+        {
+            WritePreamble();
+
+            if (_keyFrames.Count <= 0) return;
+            
+            foreach (var frame in _keyFrames)
+            {
+                OnFreezablePropertyChanged(frame, null);
+            }
+
+            _keyFrames.Clear();
+
+            WritePostscript();
+        }
+
+        bool IList.Contains(object keyFrame) => Contains((GeometryKeyFrame)keyFrame);
+
+        public bool Contains(GeometryKeyFrame keyFrame)
+        {
+            ReadPreamble();
+
+            return _keyFrames.Contains(keyFrame);
+        }
+
+        int IList.IndexOf(object keyFrame) => IndexOf((GeometryKeyFrame)keyFrame);
+
+        public int IndexOf(GeometryKeyFrame keyFrame)
+        {
+            ReadPreamble();
+
+            return _keyFrames.IndexOf(keyFrame);
+        }
+
+        void IList.Insert(int index, object keyFrame) => Insert(index, (GeometryKeyFrame)keyFrame);
+
+        public void Insert(int index, GeometryKeyFrame keyFrame)
+        {
+            if (keyFrame == null)
+            {
+                throw new ArgumentNullException(nameof(keyFrame));
+            }
+
+            WritePreamble();
+
+            OnFreezablePropertyChanged(null, keyFrame);
+            _keyFrames.Insert(index, keyFrame);
+
+            WritePostscript();
+        }
+
+        void IList.Remove(object keyFrame) => Remove((GeometryKeyFrame)keyFrame);
+
+        public void Remove(GeometryKeyFrame keyFrame)
+        {
+            WritePreamble();
+
+            if (_keyFrames.Contains(keyFrame))
+            {
+                OnFreezablePropertyChanged(keyFrame, null);
+                _keyFrames.Remove(keyFrame);
+
+                WritePostscript();
+            }
+        }
+
+        public void RemoveAt(int index)
+        {
+            WritePreamble();
+
+            OnFreezablePropertyChanged(_keyFrames[index], null);
+            _keyFrames.RemoveAt(index);
+
+            WritePostscript();
+        }
+
+        object IList.this[int index]
+        {
+            get => this[index];
+            set => this[index] = (GeometryKeyFrame)value;
+        }
+
+        public GeometryKeyFrame this[int index]
+        {
+            get
+            {
+                ReadPreamble();
+
+                return _keyFrames[index];
+            }
+            set
+            {
+                if (value == null)
+                {
+                    throw new ArgumentNullException(string.Format(CultureInfo.InvariantCulture, "DoubleKeyFrameCollection[{0}]", index));
+                }
+
+                WritePreamble();
+
+                if (value != _keyFrames[index])
+                {
+                    OnFreezablePropertyChanged(_keyFrames[index], value);
+                    _keyFrames[index] = value;
+
+                    WritePostscript();
+                }
+            }
+        }
+
+        public bool IsReadOnly
+        {
+            get
+            {
+                ReadPreamble();
+
+                return IsFrozen;
+            }
+        }
+
+        public bool IsFixedSize
+        {
+            get
+            {
+                ReadPreamble();
+
+                return IsFrozen;
+            }
+        }
+    }
+}