+init

1 files changed, 166 insertions, 0 deletions

diff --git a/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Mask.cs b/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Mask.cs
new file mode 100644
index 0000000..39dc291
--- /dev/null
+++ b/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Mask.cs
@@ -0,0 +1,166 @@
+using System;
+using UnityEngine;
+using UnityEngine.EventSystems;
+using UnityEngine.Rendering;
+using UnityEngine.Serialization;
+
+namespace UnityEngine.UI
+{
+    [AddComponentMenu("UI/Mask", 13)]
+    [ExecuteInEditMode]
+    [RequireComponent(typeof(RectTransform))]
+    [DisallowMultipleComponent]
+    public class Mask : UIBehaviour, ICanvasRaycastFilter, IMaterialModifier
+    {
+        [NonSerialized]
+        private RectTransform m_RectTransform;
+        public RectTransform rectTransform
+        {
+            get { return m_RectTransform ?? (m_RectTransform = GetComponent<RectTransform>()); }
+        }
+
+        [SerializeField]
+        [FormerlySerializedAs("m_ShowGraphic")]
+        private bool m_ShowMaskGraphic = true;
+        public bool showMaskGraphic
+        {
+            get { return m_ShowMaskGraphic; }
+            set
+            {
+                if (m_ShowMaskGraphic == value)
+                    return;
+
+                m_ShowMaskGraphic = value;
+                if (graphic != null)
+                    graphic.SetMaterialDirty();
+            }
+        }
+
+        [NonSerialized]
+        private Graphic m_Graphic;
+        public Graphic graphic
+        {
+            get { return m_Graphic ?? (m_Graphic = GetComponent<Graphic>()); }
+        }
+
+        [NonSerialized]
+        private Material m_MaskMaterial;
+
+        [NonSerialized]
+        private Material m_UnmaskMaterial;
+
+        protected Mask()
+        {}
+
+        public virtual bool MaskEnabled() { return IsActive() && graphic != null; }
+
+        [Obsolete("Not used anymore.")]
+        public virtual void OnSiblingGraphicEnabledDisabled() {}
+
+        protected override void OnEnable()
+        {
+            base.OnEnable();
+            if (graphic != null)
+            {
+                graphic.canvasRenderer.hasPopInstruction = true;
+                graphic.SetMaterialDirty();
+            }
+
+            MaskUtilities.NotifyStencilStateChanged(this);
+        }
+
+        protected override void OnDisable()
+        {
+            // we call base OnDisable first here
+            // as we need to have the IsActive return the
+            // correct value when we notify the children
+            // that the mask state has changed.
+            base.OnDisable();
+            if (graphic != null)
+            {
+                graphic.SetMaterialDirty();
+                graphic.canvasRenderer.hasPopInstruction = false;
+                graphic.canvasRenderer.popMaterialCount = 0;
+            }
+
+            StencilMaterial.Remove(m_MaskMaterial);
+            m_MaskMaterial = null;
+            StencilMaterial.Remove(m_UnmaskMaterial);
+            m_UnmaskMaterial = null;
+
+            MaskUtilities.NotifyStencilStateChanged(this);
+        }
+
+#if UNITY_EDITOR
+        protected override void OnValidate()
+        {
+            base.OnValidate();
+
+            if (!IsActive())
+                return;
+
+            if (graphic != null)
+                graphic.SetMaterialDirty();
+
+            MaskUtilities.NotifyStencilStateChanged(this);
+        }
+
+#endif
+
+        public virtual bool IsRaycastLocationValid(Vector2 sp, Camera eventCamera)
+        {
+            if (!isActiveAndEnabled)
+                return true;
+
+            return RectTransformUtility.RectangleContainsScreenPoint(rectTransform, sp, eventCamera);
+        }
+
+        /// Stencil calculation time!
+        public virtual Material GetModifiedMaterial(Material baseMaterial)
+        {
+            if (!MaskEnabled())
+                return baseMaterial;
+
+            var rootSortCanvas = MaskUtilities.FindRootSortOverrideCanvas(transform);
+            var stencilDepth = MaskUtilities.GetStencilDepth(transform, rootSortCanvas);
+            if (stencilDepth >= 8)
+            {
+                Debug.LogError("Attempting to use a stencil mask with depth > 8", gameObject);
+                return baseMaterial;
+            }
+
+            int desiredStencilBit = 1 << stencilDepth;
+
+            // if we are at the first level...
+            // we want to destroy what is there
+            if (desiredStencilBit == 1)
+            {
+                var maskMaterial = StencilMaterial.Add(baseMaterial, 1, StencilOp.Replace, CompareFunction.Always, m_ShowMaskGraphic ? ColorWriteMask.All : 0);
+                StencilMaterial.Remove(m_MaskMaterial);
+                m_MaskMaterial = maskMaterial;
+
+                var unmaskMaterial = StencilMaterial.Add(baseMaterial, 1, StencilOp.Zero, CompareFunction.Always, 0);
+                StencilMaterial.Remove(m_UnmaskMaterial);
+                m_UnmaskMaterial = unmaskMaterial;
+                graphic.canvasRenderer.popMaterialCount = 1;
+                graphic.canvasRenderer.SetPopMaterial(m_UnmaskMaterial, 0);
+
+                return m_MaskMaterial;
+            }
+
+            //otherwise we need to be a bit smarter and set some read / write masks
+            var maskMaterial2 = StencilMaterial.Add(baseMaterial, desiredStencilBit | (desiredStencilBit - 1), StencilOp.Replace, CompareFunction.Equal, m_ShowMaskGraphic ? ColorWriteMask.All : 0, desiredStencilBit - 1, desiredStencilBit | (desiredStencilBit - 1));
+            StencilMaterial.Remove(m_MaskMaterial);
+            m_MaskMaterial = maskMaterial2;
+
+            graphic.canvasRenderer.hasPopInstruction = true;
+            var unmaskMaterial2 = StencilMaterial.Add(baseMaterial, desiredStencilBit - 1, StencilOp.Replace, CompareFunction.Equal, 0, desiredStencilBit - 1, desiredStencilBit | (desiredStencilBit - 1));
+            StencilMaterial.Remove(m_UnmaskMaterial);
+            m_UnmaskMaterial = unmaskMaterial2;
+            graphic.canvasRenderer.popMaterialCount = 1;
+            graphic.canvasRenderer.SetPopMaterial(m_UnmaskMaterial, 0);
+
+            return m_MaskMaterial;
+        }
+    }
+}