Hi @RussellBeswick, I'm not sure I've understood exactly what you are doing, but I hope I've got the gist.
I've re-written your script and I hope, even if it isn't exactly what you need, it will give you a good leg-up.
/**
* @discussion https://community.adobe.com/t5/illustrator-discussions/applying-spot-colour-to-selection-help-unlocking-layer/m-p/13621584
*/
(function () {
app.userInteractionLevel = UserInteractionLevel.DONTDISPLAYALERTS;
app.selection = null;
var doc = app.activeDocument;
var whiteOverprintSpot = addSpot(doc, 'White Overprint', 39, 0, 39, 0);
var underbaseSpot = addSpot(doc, 'Underbase', 100, 0, 0, 0);
var underbaseLayer = addLayer(doc, 'Underbase');
var items = [];
for (var i = 0; i < doc.pathItems.length; i++)
items.push(doc.pathItems[i]);
// Loop through all path items in the document
for (var i = 0; i < items.length; i++) {
var item = items[i];
// Check if the path item's fill color is white
// note: this won't trigger if white global color
if (
item.fillColor.typename === "CMYKColor"
&& item.fillColor.cyan == 0
&& item.fillColor.magenta == 0
&& item.fillColor.yellow == 0
&& item.fillColor.black == 0
) {
item.filled = true;
item.fillColor = whiteOverprintSpot;
}
if (item.fillColor.spot !== underbaseSpot.spot) {
var dup = makeOffsetDuplicate(item, '-0.3', underbaseLayer);
dup.filled = true;
dup.fillColor = underbaseSpot;
dup.fillOverprint = true;
}
}
function makeOffsetDuplicate(item, offset, layer) {
app.selection = null;
// offset path Effect with Round Joins
var xmlstringOffsetPath = '<LiveEffect name="Adobe Offset Path"><Dict data="R mlim 4 R ofst value I jntp 0 "/></LiveEffect>'; // 0 = round, 1=bevel, 2=miter
xmlstringOffsetPath = xmlstringOffsetPath.replace("value", offset);
var dup = item.duplicate(layer, ElementPlacement.PLACEATEND);
dup.selected = true; // select it before applying effects
dup.stroked = false; // not sure what you want to do with strokes? (maybe pathfinder unite?)
// apply offset path Effect
dup.applyEffect(xmlstringOffsetPath);
app.redraw();
// expand appearance
app.executeMenuCommand('expandStyle');
// get reference to the expanded page item
dup = layer.pageItems[layer.pageItems.length - 1];
app.selection = null;
return dup;
}
function addSpot(doc, name, c, m, y, k) {
var mySpot;
try {
mySpot = doc.swatches.getByName(name).color; // if swatch exists....
} catch (e) {
var newSpot = doc.spots.add();
newSpot.name = name;
var newColor = new CMYKColor();
newColor.cyan = c;
newColor.magenta = m;
newColor.yellow = y;
newColor.black = k;
newSpot.colorType = ColorModel.SPOT;
newSpot.color = newColor;
mySpot = new SpotColor();
mySpot.spot = newSpot;
}
return mySpot;
}
/**
* Adds a layer to document.
* If layer `name` exists, will return it,
* or will create a new layer.
* @param {Document} doc - an Illustrator document.
* @param {String} name - the name of the layer.
* @param {Boolean} [addSerialNumber] - whether to add a unique serial number (default false).
* @returns
*/
function addLayer(doc, name, addSerialNumber) {
var newLayer;
try {
newLayer = doc.layers.getByName(name);
if (addSerialNumber) {
var nameParts = name.split(/\s(\d+)$/),
nextSerialNumber = nameParts.length == 2 ? Number(nameParts[1]) + 1 : 1;
return addLayer(doc, nameParts[0] + ' ' + nextSerialNumber);
}
} catch (e) {
newLayer = doc.layers.add()
newLayer.name = name;
}
// do you want it moved to the bottom layer order?
// newLayer.move(doc, ElementPlacement.PLACEATEND);
return newLayer;
};
})();
Note: I tend to always put Illustrator script inside an IIFE because Illustrator has a weird polluted global name space. Basically you can access any property of App just by accessing the name of that property and it can't be overwritten in the global scope. See this:
(function () {
var name = 'The Name I Want'
$.writeln('name inside IIFE: ' + name)
})();
var name = 'The Name I Want'
$.writeln('name outside of IIFE: ' + name)
Results in this:
name inside IIFE: The Name I Want
name outside of IIFE: Adobe Illustrator
And no errors are thrown!
- Mark
2 Correct answers
6
Replies
AdChoices