Application measurement/unit preferences (picas vs pixels)

Question

Hello,
I need to adjust the geometricbounds of an Image within a rectangle via a JS script. But when I get the Geometric bounds for my image, it is not using the pixels unit for measurement, its using picas. However, if I manually adjust the preferences in my Desktop Indesign to Pixels, the script runs correctly.
How can I change the preferences to "Pixels" from within my script so that I don't have to check manually?
Thanks in advance!!
Lloyd

Answer 1

It should be possible to test a document for its measurement units then use unit values to do the conversion… This was with a quick play NOT very well thought through I must admit but it may be the way to go on this…
#target indesign
app.activate();
var docRef = app.activeDocument;
with (docRef) {
     var uU = userUnits(docRef);
     $.writeln(uU);
     var rb = spreads[0].rectangles[0].geometricBounds;
     $.writeln(rb);
     // 9.99999999999999,9.99999999999999,80,110 as millimeters my prefs
     var a = new UnitValue(5,'pt');
     $.writeln(a.as(uU));
     // 1.76388888888889
     var nb = new Array(rb[0], rb[1], rb[2]+a.as(uU), rb[3]+a.as(uU));
     $.writeln(nb);
     // 9.99999999999999,9.99999999999999,81.7638888888889,111.763888888889
     spreads[0].rectangles[0].geometricBounds = nb;
// I only bothered to check in one direction…
function userUnits(doc) {
     switch (doc.viewPreferences.horizontalMeasurementUnits) {
          case 2054188905 : uU = 'pt' break;
          case 2054187363 : uU = 'pc' break;
          case 2053729891 : uU = 'inch' break;
          case 2053729892 : uU = 'inch' break;
          case 2053991795 : uU = 'mm' break;
          case 2053336435 : uU = 'cm' break;
          case 2053335395 : uU = 'ci' break;
          case 1131639917 : uU = '?????'; // What do with this?
     return uU;
It would appear to give me the same results as using mixed measures in the GUI but I've not tested much…