Create iOS Icons.jsx

// Photoshop Script to Create Mac OS X Icons from 1024x1024+ PSD Document
//
// WARNING!!! In the rare case that there are name collisions, this script will
// overwrite (delete permanently) files in the same folder in which the selected
// iTunesArtwork file is located. Therefore, to be safe, before running the
// script, it's best to make sure the selected folder is empty!
//
// Copyright (c) 2010 Matt Di Pasquale
// Added tweaks Copyright (c) 2012 by Josh Jones http://www.appsbynight.com
// Modified for hires Mac OS X icons Copyright (c) 2014 by Justin Matlock http://jdmatlock.com/
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
// Prerequisite:
// First, create at least a 1024x1024 px PSD file
// Run:
// * With Photoshop open, select File > Scripts > Create Icons
// * When prompted select the output folder (for safety, make sure it's empty)
//   for best results, name it with the 'iconset' extension,  like "folder.iconset"
// * To compile into an ICNS file that can be used by XCode/etc, run
//   iconutil -c icns "/full/path/to/folder.iconset"
//
// Adobe Photoshop JavaScript Reference
// http://www.adobe.com/devnet/photoshop/scripting.html


// Turn debugger on. 0 is off.
// $.level = 1;

try
{
    var doc = activeDocument;

    if (doc == null)
    {
      throw "Something is wrong with the file.  Make sure it's a valid PNG file.";
    }

    if (doc.saved == false)
    {
        throw "Save your active document before continuing!";
    }

    var startState = doc.activeHistoryState;       // save for undo
    var initialPrefs = app.preferences.rulerUnits; // will restore at end
    app.preferences.rulerUnits = Units.PIXELS;     // use pixels

    if (doc.width != doc.height)
    {
        throw "Image is not square";
    }
    else if ((doc.width < 1024) && (doc.height < 1024))
    {
        throw "Image is too small!  Image must be at least 1024x1024 pixels.";
    }
    else if (doc.width < 1024)
    {
        throw "Image width is too small!  Image width must be at least 1024 pixels.";
    }
    else if (doc.height < 1024)
    {
        throw "Image height is too small!  Image height must be at least 1024 pixels.";
    }

    // Folder selection dialog
    var destFolder = Folder.selectDialog( "Choose an output folder");

    if (destFolder == null)
    {
      // User canceled, just exit
      throw "";
    }

    var answer = confirm("Save files to " + destFolder + "?");
    if (!answer) {
        throw "";
    }

    // Save icons in PNG using Save for Web.
    var sfw = new ExportOptionsSaveForWeb();
    sfw.format = SaveDocumentType.PNG;
    sfw.PNG8 = false; // use PNG-24
    sfw.transparency = true;
    sfw.includeProfile = false; // no color profile
    sfw.optimized = true; // optimize output
    doc.info = null;  // delete metadata

    var icons = [

      {"folder": "iphone",  "name": "iTunesArtwork@2x.png",         "size":1024},
      {"folder": "macosx",  "name": "icon_512x512@2x.png",          "size":1024},
      {"folder": "iphone",  "name": "iTunesArtwork.png",            "size":512},
      {"folder": "macosx",  "name": "icon_256x256@2x.png",          "size":512},
      {"folder": "macosx",  "name": "icon_512x512.png",             "size":512},
      {"folder": "macosx",  "name": "icon_128x128@2x.png",          "size":256},
      {"folder": "macosx",  "name": "icon_256x256.png",             "size":256},
      {"folder": "iphone",  "name": "Icon-60@3x.png",               "size":180},
      {"folder": "iphone",  "name": "Icon-76@3x.png",               "size":180},
      {"folder": "webclip", "name": "apple-touch-icon-180x180.png", "size":180},
      {"folder": "webclip", "name": "apple-touch-icon-152x152.png", "size":152},
      {"folder": "iphone",  "name": "Icon-76@2x.png",               "size":152},
      {"folder": "macosx",  "name": "icon_128x128.png",             "size":128},
      {"folder": "webclip", "name": "apple-touch-icon-120x120.png", "size":120},
      {"folder": "iphone",  "name": "Icon-60@2x.png",               "size":120},
      {"folder": "iphone",  "name": "Icon-Small-40@3x.png",         "size":120},
      {"folder": "iphone",  "name": "Icon-Small@3x.png",            "size":87},
      {"folder": "iphone",  "name": "Icon-Small-40@2x.png",         "size":80},
      {"folder": "webclip", "name": "apple-touch-icon-76x76.png",   "size":76},
      {"folder": "iphone",  "name": "Icon-76.png",                  "size":76},
      {"folder": "macosx",  "name": "icon_32x32@2x.png",            "size":64},
      {"folder": "favicon", "name": "favicon64.png",                "size":64},
      {"folder": "iphone",  "name": "Icon-Small@2x.png",            "size":58},
      {"folder": "iphone",  "name": "Icon-Small-40.png",            "size":40},
      {"folder": "favicon", "name": "favicon32.png",                "size":32},
      {"folder": "macosx",  "name": "icon_16x16@2x.png",            "size":32},
      {"folder": "macosx",  "name": "icon_32x32.png",               "size":32},
      {"folder": "iphone",  "name": "Icon-Small.png",               "size":29},
      {"folder": "macosx",  "name": "icon_16x16.png",               "size":16},
      {"folder": "favicon", "name": "favicon.png",                  "size":16}
    ];

    var icon;
    for (i = 0; i < icons.length; i++)
    {
      icon = icons[i];

      var iconfolder = Folder(destFolder + "/" + icon.folder);
      if (!iconfolder.exists) iconfolder.create();

      doc.resizeImage(icon.size, icon.size, // width, height
                      null, ResampleMethod.BICUBICSHARPER);

      var destFileName = icon.name;

      doc.exportDocument(new File(iconfolder + "/" + destFileName), ExportType.SAVEFORWEB, sfw);
      doc.activeHistoryState = startState; // undo resize
    }

    alert("iOS Icons created!");
}

catch (exception)
{
  // Show degbug message and then quit
	if ((exception != null) && (exception != ""))
    alert(exception);
 }
finally
{
    //if (doc != null)
    //    doc.close(SaveOptions.DONOTSAVECHANGES);

    app.preferences.rulerUnits = initialPrefs; // restore prefs
}