提交代码

AnimationCurvePopupMenu/.gitignore

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+/Library/
+/Temp/

AnimationCurvePopupMenu/Assets/Editor/AnimationCurveDrawer.cs

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+using UnityEngine;
+using UnityEditor;
+
+[CustomPropertyDrawer(typeof(AnimationCurve))]
+public class AnimationCurveDrawer : PropertyDrawer
+{
+    public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
+    {
+        AnimationCurveGUI.OnGUI(position, property, label);
+    }
+}

AnimationCurvePopupMenu/Assets/Editor/AnimationCurveGUI.cs

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+using UnityEngine;
+using UnityEditor;
+
+public class AnimationCurveGUI
+{
+    private static Rect SubtractPopupWidth(Rect position)
+    {
+        position.width -= 18f;
+        return position;
+    }
+
+    private static Rect GetPopupRect(Rect position)
+    {
+        position.xMin = position.xMax - 13f;
+        return position;
+    }
+
+    #region EditorGUILayout
+    public static AnimationCurve CurveField(AnimationCurve value, params GUILayoutOption[] options)
+    {
+        Rect position = EditorGUILayout.GetControlRect(false, 16f, EditorStyles.colorField, options);
+        return CurveField(position, value);
+    }
+
+    public static AnimationCurve CurveField(string label, AnimationCurve value, params GUILayoutOption[] options)
+    {
+        Rect position = EditorGUILayout.GetControlRect(true, 16f, EditorStyles.colorField, options);
+        return CurveField(position, label, value);
+    }
+
+    public static AnimationCurve CurveField(GUIContent label, AnimationCurve value, params GUILayoutOption[] options)
+    {
+        Rect position = EditorGUILayout.GetControlRect(true, 16f, EditorStyles.colorField, options);
+        return CurveField(position, label, value);
+    }
+    #endregion
+
+    #region EditorGUI
+    public static AnimationCurve CurveField(Rect position, AnimationCurve value)
+    {
+        AnimationCurve animationCurve = EditorGUI.CurveField(SubtractPopupWidth(position), value);
+        AnimationCurvePopupMenu.Show(GetPopupRect(position), animationCurve, null);
+        return animationCurve;
+    }
+
+    public static AnimationCurve CurveField(Rect position, string label, AnimationCurve value)
+    {
+        return CurveField(position, new GUIContent(label), value);
+    }
+
+    public static AnimationCurve CurveField(Rect position, GUIContent label, AnimationCurve value)
+    {
+        AnimationCurve animationCurve = EditorGUI.CurveField(SubtractPopupWidth(position), label, value);
+        AnimationCurvePopupMenu.Show(GetPopupRect(position), animationCurve, null);
+        return animationCurve;
+    }
+    #endregion
+
+    /// <summary>
+    /// 默认属性字段的绘制，也会为PropertyField自动绘制
+    /// </summary>
+    /// <param name="position"></param>
+    /// <param name="property"></param>
+    /// <param name="label"></param>
+    public static void OnGUI(Rect position, SerializedProperty property, GUIContent label)
+    {
+        label = EditorGUI.BeginProperty(position, label, property);
+        EditorGUI.CurveField(EditorGUI.PrefixLabel(SubtractPopupWidth(position), label), property, Color.green, default(Rect));
+        AnimationCurvePopupMenu.Show(GetPopupRect(position), null, property);
+		EditorGUI.EndProperty();
+    }
+}

AnimationCurvePopupMenu/Assets/Editor/AnimationCurvePopupMenu.cs

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+using System;
+using System.Reflection;
+using UnityEngine;
+using UnityEditor;
+using UnityEditorInternal;
+
+public class AnimationCurvePopupMenu
+{
+    private static AnimationCurve s_ClipBoardAnimationCurve;
+
+    public static void Show(Rect popupRect, AnimationCurve animationCurve, SerializedProperty property)
+    {
+        if (GUI.Button(popupRect, GUIContent.none, "ShurikenDropdown"))
+        {
+            GUIContent content = new GUIContent("Copy");
+            GUIContent content2 = new GUIContent("Paste");
+            GUIContent content3 = new GUIContent("Clear");
+            GenericMenu genericMenu = new GenericMenu();
+
+            if (property != null)
+            {
+                genericMenu.AddItem(content, false, AnimationCurveCallbackCopy, property);
+                genericMenu.AddItem(content2, false, AnimationCurveCallbackPaste, property);
+                genericMenu.AddItem(content3, false, AnimationCurveCallbackClear, property);
+            }
+            else
+            {
+                genericMenu.AddItem(content, false, AnimationCurveCallback2Copy, animationCurve);
+                genericMenu.AddItem(content2, false, AnimationCurveCallback2Paste, animationCurve);
+                genericMenu.AddItem(content3, false, AnimationCurveCallback2Clear, animationCurve);
+            }
+
+            if (!HasClipBoardAnimationCurve())
+            {
+                genericMenu.AddDisabledItem(content2);
+            }
+            genericMenu.DropDown(popupRect);
+            Event.current.Use();
+        }
+    }
+
+    /// <summary>
+    /// 清除检视器界面的曲线缓存，才能刷新新的值
+    /// </summary>
+    public static void AnimationCurvePreviewCacheClearCache()
+    {
+        Assembly assembly = Assembly.GetAssembly(typeof(ReorderableList));
+        Type type = assembly.GetType("UnityEditorInternal.AnimationCurvePreviewCache");
+        MethodInfo clearCache = type.GetMethod("ClearCache", BindingFlags.Static | BindingFlags.Public);
+        if (clearCache != null)
+        {
+            clearCache.Invoke(null, null);
+        }
+    }
+
+    private static bool HasClipBoardAnimationCurve()
+    {
+        return s_ClipBoardAnimationCurve != null;
+    }
+
+    private static void AnimationCurveCallbackCopy(object obj)
+    {
+        SerializedProperty property = (SerializedProperty)obj;
+        s_ClipBoardAnimationCurve = property.animationCurveValue;
+    }
+
+    private static void AnimationCurveCallbackPaste(object obj)
+    {
+        if (s_ClipBoardAnimationCurve == null)
+        {
+            return;
+        }
+        SerializedProperty property = (SerializedProperty)obj;
+        property.serializedObject.Update();
+        property.animationCurveValue = s_ClipBoardAnimationCurve;
+        property.serializedObject.ApplyModifiedProperties();
+    }
+
+    private static void AnimationCurveCallbackClear(object obj)
+    {
+        SerializedProperty property = (SerializedProperty)obj;
+        property.serializedObject.Update();
+        property.animationCurveValue = new AnimationCurve();
+        property.serializedObject.ApplyModifiedProperties();
+    }
+
+    private static void AnimationCurveCallback2Copy(object obj)
+    {
+        AnimationCurve animationCurve = (AnimationCurve)obj;
+        s_ClipBoardAnimationCurve = animationCurve;
+    }
+
+    private static void AnimationCurveCallback2Paste(object obj)
+    {
+        if (s_ClipBoardAnimationCurve == null)
+        {
+            return;
+        }
+        AnimationCurve animationCurve = (AnimationCurve)obj;
+        animationCurve.keys = s_ClipBoardAnimationCurve.keys;
+        animationCurve.postWrapMode = s_ClipBoardAnimationCurve.postWrapMode;
+        animationCurve.preWrapMode = s_ClipBoardAnimationCurve.preWrapMode;
+        AnimationCurvePreviewCacheClearCache();
+    }
+
+    private static void AnimationCurveCallback2Clear(object obj)
+    {
+        AnimationCurve animationCurve = (AnimationCurve)obj;
+        if (animationCurve != null)
+        {
+            for (int i = animationCurve.length - 1; i >= 0; i--)
+            {
+                animationCurve.RemoveKey(i);
+            }
+            AnimationCurvePreviewCacheClearCache();
+        }
+    }
+}

AnimationCurvePopupMenu/Assets/Editor/TestCurveEditor.cs

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+using UnityEngine;
+using UnityEditor;
+
+[CustomEditor(typeof(TestCurve))]
+public class TestCurveEditor : Editor
+{
+    SerializedProperty curveProp;
+    SerializedProperty curveProp2;
+    private AnimationCurve m_TestAnimCurve = new AnimationCurve();
+    private AnimationCurve m_TestAnimCurve2 = new AnimationCurve();
+
+    void OnEnable()
+    {
+        curveProp = serializedObject.FindProperty("curve");
+        curveProp2 = serializedObject.FindProperty("curve2");
+    }
+
+    public override void OnInspectorGUI()
+    {
+        serializedObject.Update();
+
+        EditorGUILayout.PropertyField(curveProp);
+        EditorGUILayout.PropertyField(curveProp2, new GUIContent("Curve2 Object"));
+
+        m_TestAnimCurve = AnimationCurveGUI.CurveField("扩展曲线", m_TestAnimCurve);
+        m_TestAnimCurve2 = EditorGUILayout.CurveField("默认曲线", m_TestAnimCurve2);
+
+        //EditorGUILayout.TextField("abc");
+
+        serializedObject.ApplyModifiedProperties();
+    }
+}

AnimationCurvePopupMenu/Assets/TestCurve.cs

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+using UnityEngine;
+using System.Collections;
+
+public class TestCurve : MonoBehaviour
+{
+    public AnimationCurve curve;    // for preview
+    public AnimationCurve curve2;    // for preview
+}

AnimationCurvePopupMenu/ProjectSettings/ProjectVersion.txt

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+m_EditorVersion: 5.3.4p5
+m_StandardAssetsVersion: 0

README.md

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-# UnityAnimationCurvePopupMenu
-Unity AnimationCurvePopupMenu (Copy, Paste)
+# Unity AnimationCurvePopupMenu
+Unity 曲线编辑扩展菜单功能
+
+# 原因
+默认的 AnimationCurve 字段曲线编辑，不支持复制粘贴到另一个 AnimationCurve 字段，亦不支持关键帧的清空。所以扩展 AnimationCurve 的绘制，在右侧添加下拉菜单，以扩展功能。
+
+# 功能
+* 复制曲线
+* 粘贴曲线
+* 清空曲线
+
+# 截图
+点击右侧下拉按钮，点击 Copy 复制：
+![](https://github.com/akof1314/UnityAnimationCurvePopupMenu/raw/master/Screenshots/screenshot_copy.png)
+在另一个曲线，右侧菜单点击 Paste 粘贴：
+![](https://github.com/akof1314/UnityAnimationCurvePopupMenu/raw/master/Screenshots/screenshot_copy.png)
+清空曲线的关键帧值，点击 Clear 清空：
+![](https://github.com/akof1314/UnityAnimationCurvePopupMenu/raw/master/Screenshots/screenshot_clear.png)
+
+# 使用说明
+代码放进工程里面，对于默认的脚本，会自动调用扩展的曲线绘制方式：
+默认的脚本类似：
+```
+public class TestCurve : MonoBehaviour
+{
+    public AnimationCurve curve;
+}
+```
+高级方式，要对默认脚本进行自定义绘制的话，创建 Editor 类。接着，对于属性值，调用 Unity 自带的接口 `EditorGUILayout.PropertyField` 即可。对于非属性值，可通过 AnimationCurveGUI 接口来替换 EditorGUILayout 和 EditorGUI 来绘制曲线：
+```
+using UnityEngine;
+using UnityEditor;
+
+[CustomEditor(typeof(TestCurve))]
+public class TestCurveEditor : Editor
+{
+    private SerializedProperty curveProp;
+    private AnimationCurve m_TestAnimCurve = new AnimationCurve();
+
+    void OnEnable()
+    {
+        curveProp = serializedObject.FindProperty("curve");
+    }
+
+    public override void OnInspectorGUI()
+    {
+        serializedObject.Update();
+
+        EditorGUILayout.PropertyField(curveProp);
+        m_TestAnimCurve = AnimationCurveGUI.CurveField("扩展曲线", m_TestAnimCurve);
+
+        serializedObject.ApplyModifiedProperties();
+    }
+}
+```