ia_exporter.js

//
//  png export script for Adobe Illustrator
//
//  Created by hmiorroi on 10/9/14
//  Modified by hmiorroi on 4/20/16

#include "json2.js"
// reqire json2.js see http://www.JSON.org/js.html

var docName = app.activeDocument.name.slice(0,-3);
var prefPath = '~/Applications/ia_exporter_pref.txt';
var option;
var defOption = {
    "start" : 1,
    "end" : 0,
    "transparency" : false,
    "scale" : 3,
    "ios" : false,
    "android" : false
}

var formats = {
  "android":[
    {
      "folder":"drawable-mdpi",
      "scale": 1
    },
    {
      "folder":"drawable-hdpi",
      "scale": 1.5
    },
    {
      "folder":"drawable-xhdpi",
      "scale": 2
    },
    {
      "folder":"drawable-xxhdpi",
      "scale": 3
    }],
  "ios" : [
    {
      "suffix":"",
      "scale": 1
    },
    {
      "suffix":"@2x",
      "scale": 2
    },
    {
      "suffix":"@3x",
      "scale": 3
    }
  ]};

function loadPref() {
    var file = new File(prefPath);
    if (file && file.exists) {
        file.open('r');
        var str = file.read();
        option = JSON.parse(str);
        file.close();
    } else {
        option = defOption;
    }
}

function savePref() {
    var file = new File(prefPath);
    if (file) {
        file.open('w');
        file.write(JSON.stringify(option));
        file.close();
    }
}

function exportPNG24(exportFolder, fileName, scale, transparency) {
    var opt = new ExportOptionsPNG24();
    var type = ExportType.PNG24;
    opt.artBoardClipping = true;
    opt.antiAliasing = true;
    opt.transparency = transparency;
    opt.horizontalScale = scale || 100.0;
    opt.verticalScale = scale || 100.0;

    var saveFile = new File(exportFolder + '/' + fileName + ".png")
    if(saveFile.exists) saveFile.remove();
    app.activeDocument.exportFile(saveFile, type, opt);
}

function createFolder(exportFolder, name) {
  var folder_path = exportFolder + "/" + name;
  var fodler_to_save = new Folder(folder_path);
  if(!fodler_to_save.exists) fodler_to_save.create();
  return folder_path;
}

function exportiOS(exportFolder, fileName, transparency) {
  var folderPath = createFolder(exportFolder, docName + "_ios");
  var iosFormat = formats.ios
  for (var i = 0; i < iosFormat.length; i++) {
    exportPNG24(folderPath, fileName + iosFormat[i].suffix, iosFormat[i].scale * 100, transparency);
  }
}

function exportAndroid(exportFolder, fileName, transparency) {
  var folderPath = createFolder(exportFolder, docName + "_android");
  var androidFormat = formats.android
  for (var i = 0; i < androidFormat.length; i++) {
    var path = createFolder(folderPath, androidFormat[i].folder);
    exportPNG24(path, fileName, androidFormat[i].scale * 100, transparency);
  }
}

function exportFile(option){
  var op = option || {}
  var doc = app.activeDocument;
  var artboards_length = doc.artboards.length;

  start = op.start || 1;
  end = op.end || op.start;

  if(start < 1) start = 1;
  if(end > artboards_length) end = artboards_length;

  var folder = Folder.selectDialog('Select Folder to Save Files');

  for (var i = start - 1; i < end; i++) {
    var artboardName = doc.artboards[i].name;
    doc.artboards.setActiveArtboardIndex(i)
    if (op.ios) exportiOS(folder.fsName, artboardName, op.transparency);
    if (op.android) exportAndroid(folder.fsName, artboardName, op.transparency);
    if (!op.ios && !op.android) {
      exportPNG24(folder.fsName, artboardName, op.scale * 100, op.transparency);
    }
  };

}


// Dialog

loadPref();

function updateScaleField() {
    if (dialog.os_ios.value || dialog.os_android.value) {
        dialog.scale_value.enabled = false;
    } else {
        dialog.scale_value.enabled = true;
    }
}

var dialog = new Window('dialog', 'Export Artboards');
dialog.start = dialog.add('statictext', undefined, 'start:');
dialog.start.size = [150,20]
dialog.start_index = dialog.add('edittext', undefined, '' );
dialog.start_index.size = [150, 40]
dialog.start_index.text = option.start;

dialog.end = dialog.add('statictext', undefined, 'end:');
dialog.end.size = [150,20]
dialog.end_index = dialog.add('edittext', undefined, '' );
dialog.end_index.size = [150, 40]
if (option.end) dialog.end_index.text = option.end;

dialog.os_ios = dialog.add('checkbox', [0,0,150,15], 'iOS');
dialog.os_ios.value = option.ios;
dialog.os_ios.onClick = function() {
  updateScaleField()
}
dialog.os_android = this.dialog.add('checkbox', [0,0,150,15], 'Android');
dialog.os_android.value = option.android;
dialog.os_android.onClick = function() {
  updateScaleField()
}

dialog.scale = dialog.add('statictext', undefined, 'scale:');
dialog.scale.size = [150,10]
dialog.scale_value = dialog.add('edittext', undefined, '' );
dialog.scale_value.size = [150, 40]
dialog.scale_value.text = option.scale;

dialog.transparency = dialog.add('checkbox', [0,0,150,30], 'transparency');
dialog.transparency.value = option.transparency;

updateScaleField();

dialog.okBtn = dialog.add('button', undefined, 'OK', {name:'ok'});
dialog.okBtn.size = [150, 40]
dialog.okBtn.onClick = function() {
  dialog.close()
  option.start = parseInt(dialog.start_index.text);
  option.end = parseInt(dialog.end_index.text);
  option.scale = parseInt(dialog.scale_value.text);
  option.transparency = dialog.transparency.value;
  option.ios = dialog.os_ios.value;
  option.android = dialog.os_android.value;
  exportFile(option)
  savePref();
}

dialog.cancelBtn = dialog.add('button', undefined, 'Cancel', {name:'cancel'});
dialog.cancelBtn.size = [150, 40]
dialog.cancelBtn.onClick = function() {
  dialog.close()
};
dialog.show()