1 files changed, 244 insertions, 0 deletions
diff --git a/Assets/uGUI-2017.1/UnityEngine.UI/UI/Animation/CoroutineTween.cs b/Assets/uGUI-2017.1/UnityEngine.UI/UI/Animation/CoroutineTween.cs
new file mode 100644
index 0000000..8b15b3c
--- /dev/null
+++ b/Assets/uGUI-2017.1/UnityEngine.UI/UI/Animation/CoroutineTween.cs
@@ -0,0 +1,244 @@
+using System.Collections;
+using UnityEngine.Events;
+
+namespace UnityEngine.UI.CoroutineTween
+{
+    // Base interface for tweeners,
+    // using an interface instead of
+    // an abstract class as we want the
+    // tweens to be structs.
+    internal interface ITweenValue
+    {
+        void TweenValue(float floatPercentage);
+        bool ignoreTimeScale { get; }
+        float duration { get; }
+        bool ValidTarget();
+    }
+
+    // Color tween class, receives the
+    // TweenValue callback and then sets
+    // the value on the target.
+    internal struct ColorTween : ITweenValue
+    {
+        public enum ColorTweenMode
+        {
+            All,
+            RGB,
+            Alpha
+        }
+
+        public class ColorTweenCallback : UnityEvent<Color> {}
+
+        private ColorTweenCallback m_Target;
+        private Color m_StartColor;
+        private Color m_TargetColor;
+        private ColorTweenMode m_TweenMode;
+
+        private float m_Duration;
+        private bool m_IgnoreTimeScale;
+
+        public Color startColor
+        {
+            get { return m_StartColor; }
+            set { m_StartColor = value; }
+        }
+
+        public Color targetColor
+        {
+            get { return m_TargetColor; }
+            set { m_TargetColor = value; }
+        }
+
+        public ColorTweenMode tweenMode
+        {
+            get { return m_TweenMode; }
+            set { m_TweenMode = value; }
+        }
+
+        public float duration
+        {
+            get { return m_Duration; }
+            set { m_Duration = value; }
+        }
+
+        public bool ignoreTimeScale
+        {
+            get { return m_IgnoreTimeScale; }
+            set { m_IgnoreTimeScale = value; }
+        }
+
+        public void TweenValue(float floatPercentage)
+        {
+            if (!ValidTarget())
+                return;
+
+            var newColor = Color.Lerp(m_StartColor, m_TargetColor, floatPercentage);
+
+            if (m_TweenMode == ColorTweenMode.Alpha)
+            {
+                newColor.r = m_StartColor.r;
+                newColor.g = m_StartColor.g;
+                newColor.b = m_StartColor.b;
+            }
+            else if (m_TweenMode == ColorTweenMode.RGB)
+            {
+                newColor.a = m_StartColor.a;
+            }
+            m_Target.Invoke(newColor);
+        }
+
+        public void AddOnChangedCallback(UnityAction<Color> callback)
+        {
+            if (m_Target == null)
+                m_Target = new ColorTweenCallback();
+
+            m_Target.AddListener(callback);
+        }
+
+        public bool GetIgnoreTimescale()
+        {
+            return m_IgnoreTimeScale;
+        }
+
+        public float GetDuration()
+        {
+            return m_Duration;
+        }
+
+        public bool ValidTarget()
+        {
+            return m_Target != null;
+        }
+    }
+
+    // Float tween class, receives the
+    // TweenValue callback and then sets
+    // the value on the target.
+    internal struct FloatTween : ITweenValue
+    {
+        public class FloatTweenCallback : UnityEvent<float> {}
+
+        private FloatTweenCallback m_Target;
+        private float m_StartValue;
+        private float m_TargetValue;
+
+        private float m_Duration;
+        private bool m_IgnoreTimeScale;
+
+        public float startValue
+        {
+            get { return m_StartValue; }
+            set { m_StartValue = value; }
+        }
+
+        public float targetValue
+        {
+            get { return m_TargetValue; }
+            set { m_TargetValue = value; }
+        }
+
+        public float duration
+        {
+            get { return m_Duration; }
+            set { m_Duration = value; }
+        }
+
+        public bool ignoreTimeScale
+        {
+            get { return m_IgnoreTimeScale; }
+            set { m_IgnoreTimeScale = value; }
+        }
+
+        public void TweenValue(float floatPercentage)
+        {
+            if (!ValidTarget())
+                return;
+
+            var newValue = Mathf.Lerp(m_StartValue, m_TargetValue, floatPercentage);
+            m_Target.Invoke(newValue);
+        }
+
+        public void AddOnChangedCallback(UnityAction<float> callback)
+        {
+            if (m_Target == null)
+                m_Target = new FloatTweenCallback();
+
+            m_Target.AddListener(callback);
+        }
+
+        public bool GetIgnoreTimescale()
+        {
+            return m_IgnoreTimeScale;
+        }
+
+        public float GetDuration()
+        {
+            return m_Duration;
+        }
+
+        public bool ValidTarget()
+        {
+            return m_Target != null;
+        }
+    }
+
+    // Tween runner, executes the given tween.
+    // The coroutine will live within the given
+    // behaviour container.
+    internal class TweenRunner<T> where T : struct, ITweenValue
+    {
+        protected MonoBehaviour m_CoroutineContainer;
+        protected IEnumerator m_Tween;
+
+        // utility function for starting the tween
+        private static IEnumerator Start(T tweenInfo)
+        {
+            if (!tweenInfo.ValidTarget())
+                yield break;
+
+            var elapsedTime = 0.0f;
+            while (elapsedTime < tweenInfo.duration)
+            {
+                elapsedTime += tweenInfo.ignoreTimeScale ? Time.unscaledDeltaTime : Time.deltaTime;
+                var percentage = Mathf.Clamp01(elapsedTime / tweenInfo.duration);
+                tweenInfo.TweenValue(percentage);
+                yield return null;
+            }
+            tweenInfo.TweenValue(1.0f);
+        }
+
+        public void Init(MonoBehaviour coroutineContainer)
+        {
+            m_CoroutineContainer = coroutineContainer;
+        }
+
+        public void StartTween(T info)
+        {
+            if (m_CoroutineContainer == null)
+            {
+                Debug.LogWarning("Coroutine container not configured... did you forget to call Init?");
+                return;
+            }
+
+            StopTween();
+
+            if (!m_CoroutineContainer.gameObject.activeInHierarchy)
+            {
+                info.TweenValue(1.0f);
+                return;
+            }
+
+            m_Tween = Start(info);
+            m_CoroutineContainer.StartCoroutine(m_Tween);
+        }
+
+        public void StopTween()
+        {
+            if (m_Tween != null)
+            {
+                m_CoroutineContainer.StopCoroutine(m_Tween);
+                m_Tween = null;
+            }
+        }
+    }
+}