1 files changed, 78 insertions, 0 deletions
diff --git a/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Layout/LayoutElement.cs b/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Layout/LayoutElement.cs
new file mode 100644
index 0000000..cdee245
--- /dev/null
+++ b/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Layout/LayoutElement.cs
@@ -0,0 +1,78 @@
+using UnityEngine.EventSystems;
+
+namespace UnityEngine.UI
+{
+    [AddComponentMenu("Layout/Layout Element", 140)]
+    [RequireComponent(typeof(RectTransform))]
+    [ExecuteInEditMode]
+    public class LayoutElement : UIBehaviour, ILayoutElement, ILayoutIgnorer
+    {
+        [SerializeField] private bool m_IgnoreLayout = false;
+        [SerializeField] private float m_MinWidth = -1;
+        [SerializeField] private float m_MinHeight = -1;
+        [SerializeField] private float m_PreferredWidth = -1;
+        [SerializeField] private float m_PreferredHeight = -1;
+        [SerializeField] private float m_FlexibleWidth = -1;
+        [SerializeField] private float m_FlexibleHeight = -1;
+        [SerializeField] private int m_LayoutPriority = 1;
+
+
+        public virtual bool ignoreLayout { get { return m_IgnoreLayout; } set { if (SetPropertyUtility.SetStruct(ref m_IgnoreLayout, value)) SetDirty(); } }
+
+        public virtual void CalculateLayoutInputHorizontal() {}
+        public virtual void CalculateLayoutInputVertical() {}
+        public virtual float minWidth { get { return m_MinWidth; } set { if (SetPropertyUtility.SetStruct(ref m_MinWidth, value)) SetDirty(); } }
+        public virtual float minHeight { get { return m_MinHeight; } set { if (SetPropertyUtility.SetStruct(ref m_MinHeight, value)) SetDirty(); } }
+        public virtual float preferredWidth { get { return m_PreferredWidth; } set { if (SetPropertyUtility.SetStruct(ref m_PreferredWidth, value)) SetDirty(); } }
+        public virtual float preferredHeight { get { return m_PreferredHeight; } set { if (SetPropertyUtility.SetStruct(ref m_PreferredHeight, value)) SetDirty(); } }
+        public virtual float flexibleWidth { get { return m_FlexibleWidth; } set { if (SetPropertyUtility.SetStruct(ref m_FlexibleWidth, value)) SetDirty(); } }
+        public virtual float flexibleHeight { get { return m_FlexibleHeight; } set { if (SetPropertyUtility.SetStruct(ref m_FlexibleHeight, value)) SetDirty(); } }
+        public virtual int layoutPriority { get { return m_LayoutPriority; } set { if (SetPropertyUtility.SetStruct(ref m_LayoutPriority, value)) SetDirty(); } }
+
+
+        protected LayoutElement()
+        {}
+
+        protected override void OnEnable()
+        {
+            base.OnEnable();
+            SetDirty();
+        }
+
+        protected override void OnTransformParentChanged()
+        {
+            SetDirty();
+        }
+
+        protected override void OnDisable()
+        {
+            SetDirty();
+            base.OnDisable();
+        }
+
+        protected override void OnDidApplyAnimationProperties()
+        {
+            SetDirty();
+        }
+
+        protected override void OnBeforeTransformParentChanged()
+        {
+            SetDirty();
+        }
+
+        protected void SetDirty()
+        {
+            if (!IsActive())
+                return;
+            LayoutRebuilder.MarkLayoutForRebuild(transform as RectTransform);
+        }
+
+    #if UNITY_EDITOR
+        protected override void OnValidate()
+        {
+            SetDirty();
+        }
+
+    #endif
+    }
+}