Photoshop脚本将文件名添加为文本并调整大小

Question

我有一个Photoshop脚本将文件名添加为文本图层（没有扩展名），然后重新定位它并更改字体大小。除了字体大小外，它一切都很完美 - 它默认为50px。

var docRef = activeDocument;

// Now create a text layer at the front
var myLayerRef = docRef.artLayers.add();
myLayerRef.kind = LayerKind.TEXT;
myLayerRef.name = "Filename";


var myTextRef = myLayerRef.textItem;

// strip the extension off
var fileNameNoExtension = docRef.name;
fileNameNoExtension = fileNameNoExtension.split( "." );
if ( fileNameNoExtension.length > 1 ) {
    fileNameNoExtension.length--;
}
fileNameNoExtension = fileNameNoExtension.join(".");
myTextRef.contents = fileNameNoExtension.substring(0);


// off set the text to be in the middle
myTextRef.position = new Array( "279", "641");
myTextRef.size = new UnitValue(20, 'px');

如果删除最后一行，则文本默认为12px。我还尝试用以下代码替换最后一行：

myTextRef.size = new UnitValue("20", "px");
myTextRef.size = "20";
myTextRef.size = 20;
myTextRef.size = "20 px";
myTextRef.size = 20px;