Get Position of Notes

I progress . I can get the page number of a note, modify the layout, ... :-)
I discover a little bit more thanks to generic information in :
https://musescore.org/en/developers-handbook/references/musescore-inter…

{syntaxhighlighter }
import QtQuick 2.0
import MuseScore 1.0
import FileIO 1.0

MuseScore {
version: "1.0"
description: "plugin scan position"
menuPath: "Plugins.Notes.scan_position"

// output file to save the positions of the notes
FileIO {
id: outfile
source: "outfile.txt"
onError: console.log(msg)
}

// input file with layout parameters
FileIO {
id: infile
source: "infile.txt"
onError: console.log(msg)
}

// to inspect an object
function logInspect(o, oname) {
console.log("object " + oname + " <" + o.objectName + ">" );
for(var p in o){
var t=typeof o[p];
console.log(" " + p + " / " + t )
}
}

// to read positions of the chords
function scanPosition() {
// logInspect(curScore,"score");

// read the width and height from the input file
// var params = infile.read();
var params = "width 8 height 8";
var reg_width = /width (\d*)/ ;
var width = Number(params.match(reg_width)[1]);
var reg_height = /height (\d*)/ ;
var height = Number(params.match(reg_height)[1]);
console.log("infile size=<" + width + "/" + height + ">" );

// apply the width and height in the layout
curScore.pageFormat.evenBottomMargin = 0.5 ;
curScore.pageFormat.evenLeftMargin = 0.5 ;
curScore.pageFormat.evenTopMargin = 0.5 ;
curScore.pageFormat.oddBottomMargin = 0.5 ;
curScore.pageFormat.oddLeftMargin = 0.5 ;
curScore.pageFormat.oddTopMargin = 0.5 ;
curScore.pageFormat.size.width = width ;
curScore.pageFormat.size.height = height ;
curScore.pageFormat.printableWidth = curScore.pageFormat.size.width
- 2 * curScore.pageFormat.evenLeftMargin ;
curScore.pageFormat.twosided = false ;
curScore.doLayout();

console.log("pages=" + curScore.npages + " measures=" + curScore.nmeasures)

// scan the ticks of the measures
var cursor = curScore.newCursor();
cursor.rewind(0);
cursor.voice = 0;
cursor.staffIdx = curScore.nstaves - 1;
var tmeasure = [ ] ;
while (cursor.segment) {
tmeasure.push(cursor.tick) ;
cursor.nextMeasure();
}
console.log("measure " + tmeasure );

// scan the graphic positions of the chords
cursor.rewind(0);
cursor.voice = 0;
cursor.staffIdx = curScore.nstaves - 1;
var nrmeasure = 0 ;
var nbmeasure = tmeasure.length ;
var offsett = 0 ;
var toWrite = "" ;
while (cursor.segment) {
var pagenr = cursor.measure.parent.parent.pagenumber;
if (cursor.element && cursor.element.type == Element.CHORD) {
var chord = cursor.element ;
var t = cursor.tick ;
// search the measure for this tick
while ((nrmeasure < nbmeasure ) && (t >= tmeasure[nrmeasure] )) {
nrmeasure ++ ;
offsett = tmeasure[nrmeasure - 1];
}
// add the information in the string to write
toWrite +=
" m " + nrmeasure +
" t " + (t - offsett) +
" p " + pagenr +
" x " + chord.pagePos.x.toPrecision(6) +
" y " + chord.pagePos.y.toPrecision(6) +
" w " + chord.bbox.width.toPrecision(6) +
" h " + chord.bbox.height.toPrecision(6) +
"\n" ;
}
cursor.next();
}

// write the positions in the output file
outfile.write(toWrite);
}

onRun: {
console.log("hello scan position");

if (typeof curScore === 'undefined')
Qt.quit();

scanPosition()

Qt.quit();
}
}
{/syntaxhighlighter}