edited
// save combinations of lowermost layer with one layer each;
// 2023, use it at your own risk;
if (app.documents.length > 0) {
var myDocument = app.activeDocument;
var docName = myDocument.name;
try {
var basename = docName.match(/(.*)\.[^\.]+$/)[1];
var docPath = myDocument.path;
}
catch (e) {
var docPath = "~/Desktop"
};
var theLayers = collectLayersNamesIndexAndIdentifier();
// jpg options;
var jpegOptions = new JPEGSaveOptions();
jpegOptions.quality = 9;
jpegOptions.embedColorProfile = true;
jpegOptions.matte = MatteType.NONE;
// hide except lowermost layer;
showOrHideLayerById (theLayers[0][2], false);
hideOtherLayersById (theLayers[0][2]);
// save copies;
for (var m = 1; m < theLayers.length; m++) {
showOrHideLayerById (theLayers[m][2], false);
myDocument.saveAs((new File(docPath+"/"+ theLayers[0][0] + "_" + theLayers[m][0] + ".jpg")), jpegOptions, true);
showOrHideLayerById (theLayers[m][2], true);
};
};
////// collect layers //////
function collectLayersNamesIndexAndIdentifier () {
// get number of layers;
var ref = new ActionReference();
ref.putProperty(stringIDToTypeID('property'), stringIDToTypeID('numberOfLayers'));
ref.putEnumerated( charIDToTypeID("Dcmn"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") );
var applicationDesc = executeActionGet(ref);
var theNumber = applicationDesc.getInteger(stringIDToTypeID("numberOfLayers"));
// process the layers;
var theLayers = new Array;
for (var m = 0; m <= theNumber; m++) {
try {
var ref = new ActionReference();
ref.putIndex( charIDToTypeID( "Lyr " ), m);
var layerDesc = executeActionGet(ref);
var layerSet = typeIDToStringID(layerDesc.getEnumerationValue(stringIDToTypeID("layerSection")));
var isBackground = layerDesc.getBoolean(stringIDToTypeID("background"));
// if group collect values;
if (layerSet != "layerSectionEnd" && layerSet != "layerSectionStart" /*&& isBackground != true*/) {
var theName = layerDesc.getString(stringIDToTypeID('name'));
var theID = layerDesc.getInteger(stringIDToTypeID('layerID'));
var theIndex = layerDesc.getInteger(stringIDToTypeID('itemIndex'));
var theVisibility = layerDesc.getBoolean(stringIDToTypeID('visible'));
theLayers.push([theName, theIndex, theID, theVisibility])
};
}
catch (e) {};
};
return theLayers
};
// based on code by mike hale, via paul riggott;
function selectLayerByID(id,add){
add = undefined ? add = false:add
var ref = new ActionReference();
ref.putIdentifier(charIDToTypeID("Lyr "), id);
var desc = new ActionDescriptor();
desc.putReference(charIDToTypeID("null"), ref );
if(add) desc.putEnumerated( stringIDToTypeID( "selectionModifier" ), stringIDToTypeID( "selectionModifierType" ), stringIDToTypeID( "addToSelection" ) );
desc.putBoolean( charIDToTypeID( "MkVs" ), false );
try{
executeAction(charIDToTypeID("slct"), desc, DialogModes.NO );
}catch(e){
alert(e.message);
}
};
////// hide all other layers //////
function hideOtherLayersById (theID) {
// =======================================================
var desc4 = new ActionDescriptor();
var list1 = new ActionList();
var ref3 = new ActionReference();
ref3.putIdentifier(charIDToTypeID("Lyr "), theID);
// ref3.putEnumerated( charIDToTypeID( "Lyr " ), charIDToTypeID( "Ordn" ), charIDToTypeID( "Trgt" ) );
list1.putReference( ref3 );
desc4.putList( charIDToTypeID( "null" ), list1 );
desc4.putBoolean( charIDToTypeID( "TglO" ), true );
executeAction( charIDToTypeID( "Shw " ), desc4, DialogModes.NO );
};
////// show or hide layer //////
function showOrHideLayerById (theID, theVisibility) {
if (theVisibility == true) {var idhide = stringIDToTypeID( "hide" )}
else {var idhide = stringIDToTypeID( "show" )};
var desc22 = new ActionDescriptor();
var list2 = new ActionList();
var ref8 = new ActionReference();
ref8.putIdentifier( stringIDToTypeID( "layer" ), theID );
list2.putReference( ref8 );
desc22.putList( stringIDToTypeID( "null" ), list2 );
executeAction( idhide, desc22, DialogModes.NO );
};
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