GenerateLaunchImages.jsx

// Author: Pankaj Phartiyal
// Email: pankajphartiyal90@gmail.com
// License Info: Free BSD
// Copyright (c) 2014, Pankaj Phartiyal
// All rights reserved.

// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:

// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer. 
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// The views and conclusions contained in the software and documentation are those
// of the authors and should not be interpreted as representing official policies, 
// either expressed or implied, of the FreeBSD Project.

// Guide
// http://wwwimages.adobe.com/content/dam/Adobe/en/devnet/photoshop/pdfs/photoshop_scripting_guide.pdf
// JS SDK Reference
// http://wwwimages.adobe.com/content/dam/Adobe/en/devnet/photoshop/pdfs/photoshop_scriptref_js.pdf
// configuration
var GLIPNGCompression = 5 // 0-9, 0 being highest quality
var GLILaunchImagesPrefix = "launch-image" // 0-9, 0 being highest quality

var thisFile = new File($.fileName);
open(File(thisFile.path + "/PSDLaunchImages.psd"))
var docRef = app.activeDocument
var layerRef
var flattenedDocRef = docRef.duplicate("Flattened Doc", true)

// debug code
// var layerRef = docRef.layerSets[0].layerSets[0].layerSets[0].layers[1]
// flattenedDocRef.crop(layerRef.bounds)
// flattenedDocRef.saveAs(new File(docRef.path+"/launch-image-iPad-Retina-Portrait.png"), new PNGSaveOptions())
// flattenedDocRef.activeHistoryState = flattenedDocRef.historyStates[flattenedDocRef.historyStates.length - 2]

function saveLayer(layerRef, name) {
	// alert(name)
	var propername = name.replace(/[^a-zA-Z0-9]+/g, "-").toLowerCase()
	flattenedDocRef.crop(layerRef.bounds)
	var PNGSaveOptionsVar = new PNGSaveOptions()
	PNGSaveOptionsVar.compression = GLIPNGCompression
	flattenedDocRef.saveAs(new File(docRef.path+"/"+propername+".png"), PNGSaveOptionsVar)
	flattenedDocRef.activeHistoryState = flattenedDocRef.historyStates[flattenedDocRef.historyStates.length - 2]
}

for (var i = 0; i < docRef.layerSets.length; i++) {
	var basename = GLILaunchImagesPrefix + "-" + docRef.layerSets[i].name
	// alert(thename)
	for (var j = 0; j < docRef.layerSets[i].layerSets.length; j++) {
		
		var level1name = basename + "-" + docRef.layerSets[i].layerSets[j].name

		if (docRef.layerSets[i].layerSets[j].layerSets.length == 0) {
			layerRef = docRef.layerSets[i].layerSets[j].layers[1]
			saveLayer(layerRef, level1name)
		}
		
		for (var k = 0; k < docRef.layerSets[i].layerSets[j].layerSets.length; k++) {
			if (docRef.layerSets[i].layerSets[j].layerSets[k].layerSets.length == 0) {

				var finalname = level1name + "-" + docRef.layerSets[i].layerSets[j].layerSets[k].name
				layerRef = docRef.layerSets[i].layerSets[j].layerSets[k].layers[1]
				saveLayer(layerRef, finalname)
				

			} else {
				var level2name = level1name + "-" + docRef.layerSets[i].layerSets[j].layerSets[k].name

				for (var l = 0; l < docRef.layerSets[i].layerSets[j].layerSets[k].layerSets.length; l++) {

					var level3name = level2name + '-' + docRef.layerSets[i].layerSets[j].layerSets[k].layerSets[l].name
					
					layerRef = docRef.layerSets[i].layerSets[j].layerSets[k].layerSets[l].layers[1]
					saveLayer(layerRef, level3name)
				}
			}
			
		}
	}
}

flattenedDocRef.close(SaveOptions.DONOTSAVECHANGES)