pdf_highlight_colorize_js.txt

function sortindex(array){
    var ind = [];
    for (var i = 0; i < array.length; i++){
	ind.push([array[i],i]);
    }

    ind.sort(function(left,right){
	return left[0] < right[0] ? -1 : 1;
    });
    var indices = [];
    for (var i = 0; i < ind.length; i++){
	indices.push(ind[i][1]);
    }
    return indices;
}

function getxs(quad){
    var xs = [];
    for (var i = 0; i < quad.length; i+=2){
	xs = xs.concat(quad[i]);
    }
    return xs;
}

function getys(quad){
    var ys = [];
    for (var i = 1; i < quad.length; i+=2){
	ys = ys.concat(quad[i]);
    }
    return ys;
}

function fixquad(quad){
    var xs = getxs(quad)
    var ys = getys(quad)

    var indxs = sortindex(xs);
    var indys = sortindex(ys);

    // find candidates for top left based on greatest y

    var A = indys.slice(2,4);
    if (xs[A[0]] < xs[A[1]]){  // the first A candidate is better
	var B = A[1];
	A = A[0];
    } else { // the second A candidate is better
	var B = A[0];
	A = A[1];
    }

    var C = indys.slice(0,2);
    if (xs[C[0]] < xs[C[1]]){ // the first C candidate is better
	var D = C[1];
	C = C[0];
    } else{ // the second C candidate is better
	var D = C[0];
	C = C[1];
    }

    var newind = [A, B, C, D];

    var newquad = [];
    for (var i = 0; i < newind.length; i++){
	newquad.push(xs[newind[i]]);
	newquad.push(ys[newind[i]]);
    }
    return newquad;
}

function fixquads(quads){
    for (var i = 0; i < quads.length; i++) {
	quads[i] = fixquad(quads[i]);
    }
    return quads;
}


this.syncAnnotScan();
var annots = this.getAnnots({});
var changeflag = 0;
if (annots){
    for (var i = 0; i < annots.length; i++) {
	if (annots[i].type == "Highlight"){
	    if (annots[i].contents == "" & ! color.equal(annots[i].strokeColor,color.green)) {
		annots[i].strokeColor = color.green;
		changeflag = 1;
	    }
	    if (annots[i].contents != "" & ! color.equal(annots[i].strokeColor,color.blue)){
		annots[i].strokeColor = color.blue;
		changeflag = 1;
	    }
	    if (annots[i].opacity != 0.5){
		annots[i].opacity = 0.5;
		changeflag = 1;
	    }
	    newquads = fixquads(annots[i].quads);
	    if (newquads.toString() != annots[i].quads.toString()){
		changeflag = 1;
		annots[i].quads = newquads;
	    }
	}
	if (annots[i].type == "Ink" & annots[i].Subject != "Pencil"){
	   var copy_props = annots[i].getProps();
	   annots[i].destroy();
	   var copy_annot = this.addAnnot(copy_props);
	   copy_annot.Subject = "Pencil"
	   changeflag = 1;
	}
    }
}

if (changeflag == 1) app.execMenuItem("Save", this);
this.closeDoc(true);