@TiagoRocha, i had a feeling that I understood something wrong 🙂
In your description, I see one problem - there is no definition of what exactly should act as the basis for determining the multiplier. Let's say, we have two lines 50 pt and 25 pt. If we take the first one as the base and add 50 pt, then we get the multiplier (50+50)/50 = 2. If we have the second one as the base, then the multiplier is different (25+50)/25= 3. We can, of course, use a fixed multiplier, but it will be difficult for you to get the desired symbol size.
I rewrote the script with this in mind, try:
#target photoshop
var w = new Window('dialog{orientation:"column"}'),
g1 = w.add("group"),
st = g1.add('statictext{text:"base:"}');
dl = g1.add("dropdownlist{preferredSize: [120,-1]}"),
g2 = w.add("group"),
bnInc = g2.add('button{text:"+"}'),
bnDec = g2.add('button{text:"-"}'),
et = g2.add('edittext{preferredSize: [40,-1]}');
g1.add('statictext{text:"pt"}');
g2.add('statictext{text:"pt"}');
et.text = $.getenv('size') ? $.getenv('size') : 50
et.onChange = function () { $.setenv('size', this.text) }
bnDec.onClick = bnInc.onClick = function () {
var base = Number(dl.selection.text),
scale = this.text == '+' ? (base + Number(et.text)) / base : (base - Number(et.text)) / base;
if (scale >= 0) {
changeFontSize(scale)
w.onShow();
try { app.refresh() } catch (e) { w.close() }
}
}
dl.onChange = function () { $.setenv('base', this.selection.index) }
w.onShow = function () {
var o = getFontSize();
dl.removeAll()
for (a in o) { dl.add('item', a) }
dl.selection = $.getenv('base') && Number($.getenv('base')) < dl.items.length ? Number($.getenv('base')) : 0
}
w.show();
function changeFontSize(scale) {
var s2t = stringIDToTypeID;
(r = new ActionReference()).putProperty(s2t('property'), p = s2t('textKey'));
r.putEnumerated(s2t('layer'), s2t('ordinal'), s2t('targetEnum'));
if (executeActionGet(r).hasKey(p)) {
var textKey = executeActionGet(r).getObjectValue(p),
styles = textKey.getList(s2t('textStyleRange'));
var l = new ActionList();
for (var i = 0; i < styles.count; i++) {
var cur = styles.getObjectValue(i),
textStyle = cur.getObjectValue(s2t('textStyle'));
var curSize = textStyle.getUnitDoubleValue(s2t('impliedFontSize')),
curLeading = textStyle.hasKey(s2t('impliedLeading')) ? textStyle.getUnitDoubleValue(s2t('impliedLeading')) : null;
textStyle.putUnitDouble(s2t('impliedFontSize'), s2t('pointsUnit'), curSize * scale);
if (curLeading) textStyle.putUnitDouble(s2t('impliedLeading'), s2t('pointsUnit'), curLeading * scale);
cur.putObject(s2t('textStyle'), s2t('textStyle'), textStyle);
l.putObject(s2t('textStyleRange'), cur)
}
textKey.putList(s2t('textStyleRange'), l);
(r = new ActionReference()).putEnumerated(s2t('layer'), s2t('ordinal'), s2t('targetEnum'));
(d = new ActionDescriptor()).putReference(s2t('null'), r);
d.putObject(s2t('to'), s2t('textLayer'), textKey);
executeAction(s2t('set'), d, DialogModes.NO);
}
}
function getFontSize() {
var s2t = stringIDToTypeID,
fontSizeList = {};
(r = new ActionReference()).putProperty(s2t('property'), p = s2t('textKey'));
r.putEnumerated(s2t('layer'), s2t('ordinal'), s2t('targetEnum'));
if (executeActionGet(r).hasKey(p)) {
var sList = executeActionGet(r).getObjectValue(p).getList(s2t('textStyleRange'));
for (var x = 0; x < sList.count; x++) {
var k = sList.getObjectValue(x).getObjectValue(s2t('textStyle'))
if (k.hasKey(s2t('impliedFontSize'))) {
var size = Math.round(k.getUnitDoubleValue(s2t('impliedFontSize')) * 100) / 100
if (fontSizeList[size]) fontSizeList[size].push(i) else fontSizeList[size] = [i]
}
}
}
return (fontSizeList)
}
* better to use .jsx file extension, not .js. @Stephen_A_Marsh wrote a good instruction on working with scripts Downloading and Installing Adobe Scripts
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