This would be a generic function for sorting an array of pageItems (all belonging to the same spread) by stack order.
// Order an array page items by z stacking order
// by Trevor http://creative-scripts.com
// jshint undef: true, unused: true
/* globals app, $, MeasurementUnits, ContentType, Spread, Document */
var orderByStack;
orderByStack = function(pageItems) {
var spread, allSpreadItems, n, c, item,
stackMap = [];
////////////////////////////////////////////////////////////////////////////////////////
// Get the parent spread //
// We're going to be lazy and not check that all the pageItems are on the same spread //
// If there not then a deserved error will be thrown //
////////////////////////////////////////////////////////////////////////////////////////
spread = pageItems[0];
while (spread.constructor !== Spread) {
spread = spread.parent;
if (spread.constructor === Document) {
spread = false;
return pageItems; // spit back the same spit that was spat
}
}
allSpreadItems = spread.allPageItems;
n = allSpreadItems.length;
//////////////////////////////////
// Index the spread items by Id //
//////////////////////////////////
for (c = 0; c < n; c++) {
item = allSpreadItems;
stackMap['_' + item.id] = {
index: c,
item: item
};
}
//////////////////////////////////////////////////////////////////////////////////
// make a temp non-sorted list of the pageItems that contains there stack index //
//////////////////////////////////////////////////////////////////////////////////
n = pageItems.length;
for (c = 0; c < n; c++) {
pageItems = stackMap['_' + pageItems.id];
}
/////////////////////////////////////
// Sort the stackList by stack order //
/////////////////////////////////////
pageItems.sort(function(a, b) {
return b.index < a.index;
});
while (n--) {
pageItems = pageItems.item;
}
allSpreadItems.length = 0;
return pageItems;
};
/////////////////
// Pretty Demo //
/////////////////
var doc, itemsToCheck = [],
n, madeItems = [];
doc = app.documents.add({
viewPreferences: {
horizontalMeasurementUnits: MeasurementUnits.MILLIMETERS,
verticalMeasurementUnits: MeasurementUnits.MILLIMETERS
}
});
var swatchCount, itemsToMake, top, left, bottom, right, rn, item, s, rn, color;
swatchCount = doc.swatches.length - 1;
/////////////////////
// Make some items //
/////////////////////
itemsToMake = 15;
while (itemsToMake--) {
top = 10 + (260 * Math.random()) | 0;
left = 10 + (180 * Math.random()) | 0;
bottom = top + 40 + 100 * Math.random() | 0;
right = left + 40 + 100 * Math.random() | 0;
madeItems.push(doc.pages[0].rectangles.add({
geometricBounds: [top, left, bottom, right],
fillColor: 'None',
strokeColor: doc.swatches[-1],
transparencySettings: {
blendingSettings: {
opacity: 70
}
}
}));
}
////////////////////////////////
// randomly pick some of them //
////////////////////////////////
n = 5;
while (n--) {
rn = madeItems.length * Math.random() | 0;
itemsToCheck.push(madeItems[rn]);
madeItems.splice(rn, 1);
}
///////////////////////////////////////////////////////////
// we now have 5 items that are of a random stack order. //
// Let's order them //
///////////////////////////////////////////////////////////
orderByStack(itemsToCheck);
///////////////////////////
// Lets make them pretty //
///////////////////////////
n = itemsToCheck.length;
s = 0;
$.writeln('back');
while (n--) {
item = itemsToCheck;
s = s % swatchCount + 1;
color = doc.swatches[swatchCount - s];
item.fillColor = color;
item.contentType = ContentType.TEXT_TYPE;
item = item.getElements()[0];
item.contents = '' + (n + 1);
$.writeln('item.itemByID(' + item.id + ').color.name: ' + color.name + ' contents: ' + item.contents);
}
$.writeln('front');
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