【Photoshop】レイヤーの書き出しツール

LayerExporter.jsx

/*================================================================================
#	LayerExporter for Photoshop
#	レイヤーをpng,jpg,psdで書き出すスクリプト
================================================================================*/

#target photoshop

//================================================================================
const SCRIPT_TITLE = "LayerExporter";

const EDIT_TEXT_WIDTH_MINSIZE = 100;
const EDIT_TEXT_HEIGHT_MINSIZE = 30;

//================================================================================
var mFolderPath;

//================================================================================
// 実行部
app.activeDocument.suspendHistory(SCRIPT_TITLE,"Run()");

//================================================================================
// メイン処理
function Run() {

    // 単位設定を保持＋Pixelに変換
    var myRulerUnits = preferences.rulerUnits;
    preferences.rulerUnits = Units.PIXELS;

    SettingWindow();

    // 初期設定
    grpSelectType.selectType.selection = 0;
    grpSaveType.selectType.selection = 0;

    // 書き出し先の初期値に現在のパスを指定
    // 保存されていない場合にはパスがないのでtry,catchで
    try {
        if (activeDocument.path != null) {
            mFolderPath = activeDocument.path;
            grpFilePath.filePath.text  = mFolderPath;
        }
    } catch(e) {
        // 特に何もしない
    }

    // 参照ボタンが押された時
    grpFilePath.btnReference.onClick = function () {
        FolderReference ();
        // 再描画
        refresh();
    }

    // 実行ボタンが押されたら
    grpSystemButton.btnApply.onClick = function () {
        if (SettingCheck ()) {
            LayerExport();
        }
    }

    dlg.show();

    // 単位設定を元に戻す
    preferences.rulerUnits = myRulerUnits;
}

//================================================================================
// ウィンドウの設定
function SettingWindow () {

    // --ウィンドウの生成
    dlg = new Window ("dialog", SCRIPT_TITLE);
    dlg.minimumSize = [200, 100];
    dlg.margins = [10, 10, 10, 10];

    // --Panel > Setting
    dlg.pnlSetting = dlg.add("panel", undefined,"Setting");
    dlg.pnlSetting.alignment = "left";

    // --Setting
    grpFilePath = dlg.pnlSetting.add("group");
    grpFilePath.alignment = "left";
    grpFilePath.title = grpFilePath.add("statictext", undefined, "書き出し先：");
    grpFilePath.filePath = grpFilePath.add("edittext",undefined, mFolderPath);
    grpFilePath.filePath.minimumSize = [EDIT_TEXT_WIDTH_MINSIZE, undefined];
    grpFilePath.filePath.maximumSize = [EDIT_TEXT_WIDTH_MINSIZE, EDIT_TEXT_WIDTH_MINSIZE];
    grpFilePath.btnReference = grpFilePath.add("button",undefined, "参照", { name:"reference"});    

    grpSaveType = dlg.pnlSetting.add("group");
    grpSaveType.alignment = "left";
    grpSaveType.sText = grpSaveType.add("statictext", undefined, "保存形式：");
    grpSaveType.selectType = grpSaveType.add("dropdownlist", undefined, ["PNG", "JPG", "PSD"]);

    grpSelectType = dlg.pnlSetting.add("group");
    grpSelectType.alignment = "left";
    grpSelectType.sText = grpSelectType.add("statictext", undefined, "対象レイヤーを選択：");
    grpSelectType.selectType = grpSelectType.add("dropdownlist", undefined, ["Select Layers", "All Layers"]);

    grpTrim = dlg.pnlSetting.add("group");
    grpTrim.cBoxTrim = grpTrim.add("checkbox", undefined, "トリミングを行う");
    grpTrim.cBoxTrim.minimumSize = [200, undefined];
    grpTrim.alignment = "left";

    grpSerialNum = dlg.pnlSetting.add("group");
    grpSerialNum.cBoxSerialNum = grpSerialNum.add("checkbox", undefined, "連番追加");
    grpSerialNum.cBoxSerialNum.minimumSize = [200, undefined];
    grpSerialNum.alignment = "left";

    // --システムボタン
    grpSystemButton = dlg.add("group");
    grpSystemButton.btnApply = grpSystemButton.add("button",undefined, "実行", { name:"apply"});
    grpSystemButton.btnApply.minimumSize = [EDIT_TEXT_WIDTH_MINSIZE, EDIT_TEXT_HEIGHT_MINSIZE];
    grpSystemButton.btnCancel = grpSystemButton.add("button",undefined, "閉じる", { name:"cancel"});
    grpSystemButton.btnCancel.minimumSize = [EDIT_TEXT_WIDTH_MINSIZE, EDIT_TEXT_HEIGHT_MINSIZE];
}

//================================================================================
// レイヤーのエクスポート処理
function LayerExport() {
    try {
        var targetLayers = [];
        var selection = grpSelectType.selectType.selection.text;

        if (selection == "All Layers") {
            targetLayers = activeDocument.layers;
        } else {
            targetLayers = GetSelectedLayers(targetLayers);
        }

        switch(grpSaveType.selectType.selection.text) {
            case "PNG":
            case "JPG":
                LayerExportImage(targetLayers);
                break;
            case "PSD":
                LayerExportPSD(targetLayers);
                break;
        }

        alert("書き出しが完了しました。", "完了通知");
    } catch(e) {
        alert (e);
    }
}

//================================================================================
// 単一画像のエクスポート処理
function LayerExportImage(targetLayers, ext) {
    var copyVisibles = [];
    var ext = "." + grpSaveType.selectType.selection.text.toLowerCase();

    // 選択レイヤーの表示状態を保存
    for (var i = 0; i < targetLayers.length; i++) {
        copyVisibles.push(targetLayers[i].visible);
    }

    DisableLayers(targetLayers);

    for (var i = 0; i < targetLayers.length; i++) {
        var path = mFolderPath + "/" ;

        // 連番の追加
        path += AddSerialNum();

        path += targetLayers[i].name;

        // 名前に「.png」があると保存時に「.png.png」などになるので削除
        path = path.replace(ext, "");

        //レイヤーの表示状態を制御
        if (i >= 1) {
            targetLayers[i-1].visible = false;
        }
        targetLayers[i].visible = true;

        switch(grpSaveType.selectType.selection.text) {
            case "PNG":
                SavePNG(path);
                break;
            case "JPG":
                SaveJPG(path);
                break;
        }

        // トリミングするか？
        if (grpTrim.cBoxTrim.value) {
            // ファイルオープンの際は、拡張子まで名前が必要
            Trimming (path + ext);
        }
    }

    // 表示状態を元に戻す
    for (var i = 0; i < targetLayers.length; i++) {
        targetLayers[i].visible = copyVisibles[i];
    }
}

//================================================================================
// PSDのエクスポート処理
function LayerExportPSD(targetLayers) {
    var ext = "." + grpSaveType.selectType.selection.text.toLowerCase();

    var oriDocName = activeDocument.name;
    var names = GetLayerNames(targetLayers);
    for (var i = 0; i < names.length; i++) {
        var path = mFolderPath + "/" ;
        SetActiveDocument(oriDocName);
        var copyDoc = activeDocument.duplicate()
        activeDocument = copyDoc
        path += AddSerialNum();
        path += names[i];
        path = path.replace(ext, "");

        RemoveLayers(names, names[i]);
        SavePSD(path);
        copyDoc.close(SaveOptions.DONOTSAVECHANGES);
    }
}

//================================================================================
// 指定ドキュメントをアクティブに
function SetActiveDocument(name) {
    for (var i = 0; i < documents.length; i++) {
        if (documents[i].name == name) {
            activeDocument = documents[i];
            return;
        }
    }
}

//================================================================================
// レイヤーリストから名前リストを取得
function GetLayerNames(layers) {
    var names = new Array();
    for (var i = 0; i < layers.length; i++) {
        names.push(layers[i].name);
    }
    return names;
}

//================================================================================
// 指定レイヤー以外を削除
function RemoveLayers(names, ignoreName) {
    ClearSelectLayers();

    var doc = app.activeDocument;
    var allLayers = [];
    var allLayers = CollectAllLayers(doc, allLayers);
    for (var i = 0; i < allLayers.length; i++) {
        if (allLayers[i].name == ignoreName) {
            continue;
        }

        for (var j = 0; j < names.length; j++) {
            if (allLayers[i].name == names[j]) {
                AddSelectionLayer(allLayers[i].name);
            }
        }
    }

    RemoveSelectLayers();
}

//================================================================================
// 全てのレイヤーの選択を解除
function ClearSelectLayers() {
    var idselectNoLayers = stringIDToTypeID( "selectNoLayers" );
        var desc21 = new ActionDescriptor();
        var idnull = charIDToTypeID( "null" );
            var ref7 = new ActionReference();
            var idLyr = charIDToTypeID( "Lyr " );
            var idOrdn = charIDToTypeID( "Ordn" );
            var idTrgt = charIDToTypeID( "Trgt" );
            ref7.putEnumerated( idLyr, idOrdn, idTrgt );
        desc21.putReference( idnull, ref7 );
    executeAction( idselectNoLayers, desc21, DialogModes.NO );
}

//================================================================================
// 全てのレイヤーを取得
function CollectAllLayers (doc, allLayers){
    for (var m = 0; m < doc.layers.length; m++){
        var theLayer = doc.layers[m];
        if (theLayer.typename === "ArtLayer"){
            allLayers.push(theLayer);
        }else{
            allLayers.push(theLayer);
            CollectAllLayers(theLayer, allLayers);
        }
    }
    return allLayers;
}

//================================================================================
// 指定レイヤーの追加選択
function AddSelectionLayer(layerName) {
    var actDesc= new ActionDescriptor();
    var actRef= new ActionReference();
    actRef.putName( charIDToTypeID('Lyr '), layerName);
    actDesc.putReference( charIDToTypeID('null'), actRef );
    actDesc.putEnumerated( stringIDToTypeID('selectionModifier'),
        stringIDToTypeID('selectionModifierType'),
        stringIDToTypeID('addToSelection') );
    actDesc.putBoolean( charIDToTypeID('MkVs'), false );
    executeAction( charIDToTypeID('slct'), actDesc, DialogModes.NO );
}

//================================================================================
// 選択レイヤーを全て削除
function RemoveSelectLayers() {
    var idDlt = charIDToTypeID( "Dlt " );
        var desc14 = new ActionDescriptor();
        var idnull = charIDToTypeID( "null" );
            var ref2 = new ActionReference();
            var idLyr = charIDToTypeID( "Lyr " );
            var idOrdn = charIDToTypeID( "Ordn" );
            var idTrgt = charIDToTypeID( "Trgt" );
            ref2.putEnumerated( idLyr, idOrdn, idTrgt );
        desc14.putReference( idnull, ref2 );
        var idLyrI = charIDToTypeID( "LyrI" );
            var list2 = new ActionList();
            list2.putInteger( 27 );
        desc14.putList( idLyrI, list2 );
    executeAction( idDlt, desc14, DialogModes.NO );
}

//================================================================================
// 連番の追加処理
function AddSerialNum() {
    var addText = "";
    // 連番追加するか？(同一名回避用)
    if (grpSerialNum.cBoxSerialNum.value) {
        // 0埋め3桁
        var num = ("00" + i).slice(-3) + "_";
        addText += num;
    }

    return addText;
}

//================================================================================
// 対象レイヤーのリストを全て非表示に
function DisableLayers(targetLayers) {
    for (var i = 0; i < targetLayers.length; i++) {
        targetLayers[i].visible = false;
    }
}

//================================================================================
// PNG形式で保存
function SavePNG(path) {
    var saveFileObj = new File(path);
    var opt = new PNGSaveOptions();	//PNGの設定
    opt.interlaced = false;  		//インターレースなし
    activeDocument.saveAs(saveFileObj, opt, true, Extension.LOWERCASE)
}

//================================================================================
// JPG形式で保存
function SaveJPG(path) {
    var saveFileObj = new File(path);
    var opt = new JPEGSaveOptions();	//JPGの設定
    opt.quality = 12;
    activeDocument.saveAs(saveFileObj, opt, true, Extension.LOWERCASE)
}

//================================================================================
// PSD形式で保存
function SavePSD(path) {
    var saveFileObj = new File(path);
    var opt = new PhotoshopSaveOptions();
    opt.alphaChannels = true;
    opt.annotations = true;
    opt.embedColorProfile = false;
    opt.layers = true;
    opt.spotColors = false;
    activeDocument.saveAs(saveFileObj, opt, true, Extension.LOWERCASE);
}

//================================================================================
// フォルダの選択処理
function FolderReference() {
    try {
        mFolderPath = Folder.selectDialog("★フォルダを指定してください");
        grpFilePath.filePath.text  = mFolderPath;
    } catch (e) {
        alert(e);
    }
}

//================================================================================
// 設定のエラーチェック処理
function SettingCheck() {
    if (mFolderPath == null) {
        alert("フォルダが選択されていません", "エラー通知");
        return false;
    }

    return true;
}

//================================================================================
// トリミング処理
function Trimming(path) {
    var path02 = path;

    // 最初に「/」や「\」があるとファイルオープンの際にコケるので回避
    if (path02[0] == '/' || path02[0] == '\\') {
        path02.substr(1);
    }  

    var fileObj = new File(path);

    app.open(fileObj);

    // アルファでトリミング
    activeDocument.trim(TrimType.TRANSPARENT, true, true, true, true);

    SavePNG (path);
    activeDocument.close(SaveOptions.DONOTSAVECHANGES);
}

//================================================================================
// 選択レイヤーを取得
function GetSelectedLayers(){ 
    var selectList = [];

    var idGrp = stringIDToTypeID( "groupLayersEvent" );
    var descGrp = new ActionDescriptor();
    var refGrp = new ActionReference();
    refGrp.putEnumerated(charIDToTypeID( "Lyr " ),charIDToTypeID( "Ordn" ),charIDToTypeID( "Trgt" ));
    descGrp.putReference(charIDToTypeID( "null" ), refGrp );
    executeAction( idGrp, descGrp, DialogModes.ALL );

    var myActiveLayer = app.activeDocument.activeLayer;
    for (var i = 0; i < myActiveLayer.layers.length; i++) {
        selectList.push(myActiveLayer.layers[i])
    }

    Undo();

    return selectList;
}

//================================================================================
// Undo処理
function Undo() {
    executeAction(charIDToTypeID("undo"), undefined, DialogModes.NO);
}