Sketch 数字上标格式

digit_superscript.js

const digit_font = "DINAlternate-Bold";
const digit_re = /[\.0-9]+/g;
const digit_sup_re = /\.[0-9]+/g;

const offsetScale = 0.2;
const scale  = 0.7;

function reHelper (re, text){
    let buffer, ranges = [];
    while ((buffer = re.exec(text)) !== null) {
        res = { "string": buffer[0], "start":  buffer.index, "length": buffer[0].length};
        ranges.push(NSMakeRange(res.start,res.length))
    }
    return ranges;
}

function fontHelper (fn,size) { return NSFont.fontWithName_size(fn,size?size:16) };

function sizeInRange (layer,range){
    let sub = [[layer attributedStringValue] attributedSubstringFromRange: range];
    return sub.treeAsDictionary().attributes[0].NSFont.attributes.NSFontSizeAttribute;
}

function updateLayers(){
    let selectedLayers = context.selection;
    let layers = selectedLayers;

    layers.forEach(function(layer){
        if (layer.className() != 'MSTextLayer') return;
        let text  = layer.stringValue();

        let digit_ranges = reHelper(digit_re,text);
        let digit_sup_ranges = reHelper(digit_sup_re,text);

        layer.setIsEditingText(true);

        digit_ranges.forEach(function(range){
            let size = sizeInRange(layer,range);
            layer.addAttribute_value_forRange(NSFontAttributeName, fontHelper(digit_font,size), range);
        });
        digit_sup_ranges.forEach(function(range){
            let size = sizeInRange(layer,range);
            layer.addAttribute_value_forRange(NSFontAttributeName, fontHelper(digit_font,size*scale), range);
            layer.addAttribute_value_forRange(NSBaselineOffsetAttributeName, offsetScale*size, range);
        });
        layer.setIsEditingText(false);
    })
};

updateLayers();