Unity一键压图插件开发

前言

前段时间给项目压图，上千张图片都是一张张手动压的，累的要死还没有意义，于是就萌生了做一个unity压图插件的想法。功能逻辑不是很复杂，因为是第一次研究EditorGUI，大概有一半时间都用在制作插件界面上了。

正文

界面效果：

点击菜单栏中的 图片压缩->打开工具，会弹出插件的界面。 Talk is cheap. Show me the code. 代码如下：

using System.Collections;
using UnityEngine;
using UnityEditor;
using System.IO;
public class CompressTextureHelper : EditorWindow
{
    private enum Platform
    {
        Android,
        iPhone,
        Standalone,
        WebGL
    }

    private enum CompressMode
    {
        普通压缩, //最保守的压缩，选择比最大边大一号的size压缩，效果可能会不明显
        智能压缩, //选择最大边接近的size，比普通压缩压缩力度大
        根据面积压缩, //根据面积压缩，选择比自己面积大一号的，比较保守
        根据面积强力压缩 //根据面积压缩，选择与自己最接近的
    }

    private CompressMode mode = CompressMode.普通压缩;

    private bool isReset;

    private bool isAndroid;
    private bool isIOS;
    private bool isStandalone;
    private bool isWebGL;

    private int quality;
    private TextureImporterFormat format = TextureImporterFormat.ASTC_RGB_6x6;

    private TextureImporterPlatformSettings settings;

    //存储路径
    static ArrayList ImagePathlist;

    [MenuItem("图片压缩/打开工具")]
    static void Init()
    {
        GetWindow(typeof(CompressTextureHelper));
    }

    private void Awake()
    {
        settings = new TextureImporterPlatformSettings();
        settings.overridden = true;
        //settings.resizeAlgorithm = TextureResizeAlgorithm.Mitchell;
        //settings.textureCompression = TextureImporterCompression.Uncompressed;
        //settings.compressionQuality = 100;
        //settings.crunchedCompression = true;
        //settings.allowsAlphaSplitting = true;
        //settings.androidETC2FallbackOverride = AndroidETC2FallbackOverride.UseBuildSettings;
    }

    //界面
    void OnGUI()
    {
        EditorGUILayout.Space();
        EditorGUILayout.Space();
        EditorGUILayout.Space();
        EditorGUI.DropShadowLabel(new Rect(0, -5, position.width, 20), "一键压缩工具v1.0");
        EditorGUILayout.Space();

        EditorGUI.BeginDisabledGroup(isReset); //与end呼应，中间的都灰色禁用
        //GUI.enabled = isReset; //和上面功能类似，结束位置用GUI.enabled = true;

        mode = (CompressMode)EditorGUILayout.EnumPopup("压缩模式", mode);
        EditorGUILayout.Space();

        format = (TextureImporterFormat)EditorGUILayout.EnumPopup("压图格式", format);
        EditorGUILayout.Space();

        EditorGUI.EndDisabledGroup();
        //GUI.enabled = true;

        EditorGUILayout.LabelField("压缩平台：");
        //EditorGUILayout.BeginHorizontal(); //开始水平布局
        isAndroid = EditorGUILayout.Toggle("Android", isAndroid);
        isIOS = EditorGUILayout.Toggle("IOS", isIOS);
        isStandalone = EditorGUILayout.Toggle("PC,Mac&Linux", isStandalone);
        isWebGL = EditorGUILayout.Toggle("WebGL", isWebGL);
        //EditorGUILayout.EndHorizontal();
        EditorGUILayout.Space();

        isReset = EditorGUILayout.Toggle("还原为导入时默认格式", isReset);
        EditorGUILayout.Space();

        if (GUILayout.Button("一键压缩"))
        {
            CompressorIma();
        }
        EditorGUILayout.Space();

        if (GUILayout.Button("单个文件夹压缩"))
        {
            CompressorIma1();
        }
        EditorGUILayout.Space();

        if (GUILayout.Button("选中图片压缩"))
        {
            CompressorIma2();
        }
    }

    //获取所有图片路径并保存
    void GetDirs(string path1)
    {
        foreach (string path in Directory.GetFiles(path1))
        {
            //获取所有文件夹中后缀符合要求对象的路径  
            if (System.IO.Path.GetExtension(path) == ".jpg" || System.IO.Path.GetExtension(path) == ".png" || System.IO.Path.GetExtension(path) == ".JPG" || System.IO.Path.GetExtension(path) == ".PNG")
            {
                ImagePathlist.Add(path.Substring(path.IndexOf(path1)));
            }
        }
        if (Directory.GetDirectories(path1).Length > 0)  //遍历所有文件夹  
        {
            foreach (string path11 in Directory.GetDirectories(path1))
            {
                GetDirs(path11);
            }
        }
    }

    //处理资源
    void opImage(string path)
    {
        try
        {
            TextureImporter ti = (TextureImporter)TextureImporter.GetAtPath(path);
            Texture texture = AssetDatabase.LoadAssetAtPath(path);

            int size = 1024;
            GetSize(texture, ref size);

            ChoosePlatformAndHandleIma(ti, size);
        }
        catch (System.Exception)
        {
            //因为某些原因未被成功压缩的图片，请手动查看路径
            Debug.LogError(path);
        }
    }

    //一键压缩
    void CompressorIma()
    {
        if (!JudgeChoose())
            return;

        if (ImagePathlist == null)
        {
            ImagePathlist = new ArrayList();
        }
        else
        {
            ImagePathlist.Clear();
        }

        GetDirs("Assets");
        
        bool temp = EditorUtility.DisplayDialog("提示", "一共需要处理" + ImagePathlist.Count + "张图片", "确定", "取消");

        if (temp)
        {
            EditorUtility.DisplayProgressBar("进度", "0/" + ImagePathlist.Count, 0);
            for (int i = 0; i