24.总结

18.EditorGUIUtility-绘制色板绘制曲线

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18.1 知识点

绘制色板

在指定区域绘制一个色板矩形
EditorGUIUtility.DrawColorSwatch(Rect 绘制色板的矩形, Color 颜色);

主要配合 EditorGUILayout.ColorField 颜色输入控件使用

private Color color;

private void OnGUI()
{
    // 绘制色板
    // 一般配合选取颜色控件使用
    color = EditorGUILayout.ColorField(new GUIContent("选取颜色"), color, true, true, true);
    // 默认颜色，方便选取颜色
    EditorGUIUtility.DrawColorSwatch(new Rect(180, 180, 30, 30), Color.blue);
}

绘制曲线

在指定区域绘制曲线
EditorGUIUtility.DrawCurveSwatch(Rect 绘制曲线的范围,
AnimationCurve 曲线,
SerializedProperty 要绘制为SerializedProperty的曲线,
Color 绘制曲线的颜色,
Color 绘制背景的颜色);

private AnimationCurve curve = new AnimationCurve();

private void OnGUI()
{
    // 绘制曲线
    // 配合 EditorGUILayout.CurveField 曲线输入控件显示当前显示的曲线
    curve = EditorGUILayout.CurveField("曲线设置", curve);
    EditorGUIUtility.DrawCurveSwatch(new Rect(0, 300, 100, 80), curve, null, Color.red, Color.white);
}

更多API

官方文档：EditorGUIUtility

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18.2 知识点代码

Lesson18_EditorGUIUtility_绘制色板绘制曲线

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Lesson18_EditorGUIUtility_绘制色板绘制曲线 : MonoBehaviour
{
    void Start()
    {
        #region 知识点一 绘制色板

        //在指定区域绘制一个色板矩形
        //EditorGUIUtility.DrawColorSwatch(Rect 绘制色板的矩形, Color 颜色);

        //主要配合 EditorGUILayout.ColorField 颜色输入控件使用

        #endregion

        #region 知识点二 绘制曲线

        //在指定区域绘制曲线
        //EditorGUIUtility.DrawCurveSwatch(Rect 绘制曲线的范围,
        //                                   AnimationCurve 曲线,
        //                                   SerializedProperty 要绘制为SerializedProperty的曲线,
        //                                   Color 绘制曲线的颜色,
        //                                   Color 绘制背景的颜色);

        //主要配合 EditorGUILayout.CurveField 曲线输入控件使用

        #endregion

        #region 知识点三 更多API

        // 官方文档：https://docs.unity3d.com/ScriptReference/EditorGUIUtility.html

        #endregion
    }
}

MyEditorGUIUtilityLearnWindow

using System;
using UnityEditor;
using UnityEngine;

public class MyEditorGUIUtilityLearnWindow : EditorWindow
{
    [MenuItem("编辑器拓展教程/MyEditorGUIUtilityLearnWindow")]
    private static void OpenMyEditorGUIUtilityLearnWindow()
    {
        MyEditorGUIUtilityLearnWindow win =
            EditorWindow.GetWindow<MyEditorGUIUtilityLearnWindow>("EditorGUIUtility学习面板");
        //win.titleContent = new GUIContent("EditorGUIUtility学习面板");
        win.Show();
    }

    #region Lesson14_EditorGUIUtility_资源加载

    private Texture img;
    private Texture img2;

    #endregion

    #region Lesson15_EditorGUIUtility_搜索框查询对象选中提示

    private Texture img3;

    #endregion
    
    #region Lesson18_EditorGUIUtility_绘制色板绘制曲线

    private Color color;

    private AnimationCurve curve = new AnimationCurve();

    #endregion

    private void OnGUI()
    {
        #region Lesson14_EditorGUIUtility_资源加载

        //加载资源（如果资源不存在返回null)
        if (GUILayout.Button("加载编辑器图片资源"))
            img = EditorGUIUtility.Load("head.png") as Texture;
        if (img != null)
            GUI.DrawTexture(new Rect(0, 50, 160, 90), img);

        //加载资源（如果资源不存在会直接报错）
        if (GUILayout.Button("加载编辑器图片资源(如果资源不存在会直接报错）"))
            img2 = EditorGUIUtility.LoadRequired("head.png") as Texture;
        if (img2 != null)
            GUI.DrawTexture(new Rect(0, 150, 160, 90), img2);

        #endregion

        #region Lesson15_EditorGUIUtility_搜索框查询对象选中提示

        //搜索框查询
        if (GUILayout.Button("打开搜索框查询窗口"))
        {
            EditorGUIUtility.ShowObjectPicker<Texture>(null, true, "head", 0);
        }

        if (Event.current.commandName == "ObjectSelectorUpdated")
        {
            img3 = EditorGUIUtility.GetObjectPickerObject() as Texture;
            if (img3 != null)
                Debug.Log(img3.name);
        }
        else if (Event.current.commandName == "ObjectSelectorClosed")
        {
            img3 = EditorGUIUtility.GetObjectPickerObject() as Texture;
            if (img3 != null)
                Debug.Log("窗口关闭 - " + img3.name);
        }


        //对象选中提示提示
        if (GUILayout.Button("高亮选中对象"))
        {
            if (img3 != null)
                EditorGUIUtility.PingObject(img3);
        }

        #endregion

        #region Lesson16_EditorGUIUtility_窗口事件传递坐标转换

        //窗口事件传递
        if (GUILayout.Button("传递事件"))
        {
            //声明事件
            Event e = EditorGUIUtility.CommandEvent("韬老狮的事件");
            MyEditorGUILearnWindow win = EditorWindow.GetWindow<MyEditorGUILearnWindow>();
            win.SendEvent(e);
        }

        //坐标转换
        if (GUILayout.Button("坐标转换测试"))
        {
            Vector2 v = new Vector2(10, 10);

            Vector2 screenPos = EditorGUIUtility.GUIToScreenPoint(v);

            GUI.BeginGroup(new Rect(10, 10, 100, 100));
            //转换函数 如果包裹在布局相关函数中 那么位置要加上布局的偏移 再进行转换
            Vector2 screenPos2 = EditorGUIUtility.GUIToScreenPoint(v);
            GUI.EndGroup();

            Debug.Log("GUI:" + v + "Screen:" + screenPos + "布局内坐标：" + screenPos2);
        }

        #endregion

        #region Lesson17_EditorGUIUtility_指定区域使用对应鼠标指针

        EditorGUI.DrawRect(new Rect(0, 180, 100, 100), Color.green);
        EditorGUIUtility.AddCursorRect(new Rect(0, 180, 100, 100), MouseCursor.FPS);

        #endregion

        #region Lesson18_EditorGUIUtility_绘制色板绘制曲线

        //绘制色板
        //一般配合选取颜色控件使用
        color = EditorGUILayout.ColorField(new GUIContent("选取颜色"), color, true, true, true);
        //默认颜色 方便选取颜色
        EditorGUIUtility.DrawColorSwatch(new Rect(180, 180, 30, 30), Color.blue);

        //绘制曲线
        //配合 EditorGUILayout.CurveField 曲线输入控件显示当前显示的曲线
        curve = EditorGUILayout.CurveField("曲线设置", curve);
        EditorGUIUtility.DrawCurveSwatch(new Rect(0, 300, 100, 80), curve, null, Color.red, Color.white);

        #endregion
    }
}

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