[772732136@qq.com]

例子：

function setRulerOriginToBottomLeft() {
    if (app.documents.length === 0) {
        alert("请打开一个文档再运行脚本。");
        return;
    }

    var doc = app.activeDocument;
    var artboard = doc.artboards[doc.artboards.getActiveArtboardIndex()];

    // 获取画板的尺寸
    var artboardRect = artboard.artboardRect;
    var artboardWidth = artboardRect[2] - artboardRect[0];
    var artboardHeight = artboardRect[1] - artboardRect[3];

    // 设置标尺原点到画板左下角
    doc.rulerOrigin = [artboardRect[0], artboardRect[3]];

    // 可选：将全局坐标系的原点也设置到画板左下角
    doc.rulerUnits = RulerUnits.Millimeters;
    app.coordinateSystem = CoordinateSystem.ARTBOARDCOORDINATESYSTEM;
}

// 运行函数
setRulerOriginToBottomLeft();