/* @Override */
public Object invoke(final Object thiz, final Object[] args) throws Exception {
String contentArg = null;
ScriptableFunction onGenerateArg = null;
ScriptableFunction onErrorArg = null;
Scriptable optionsArg = null;
if(args.length < 2){
throw new IllegalArgumentException("Missing Captured Callback");
}else{
contentArg = (String) args[0];
onGenerateArg = (ScriptableFunction) args[1];
if(args.length > 2){
onErrorArg = (ScriptableFunction) args[2];
if(args.length > 3){
optionsArg = (Scriptable) args[3];
}
}
}
final String contents = contentArg;
final ScriptableFunction generatededCallback = onGenerateArg;
final ScriptableFunction errorCallback = onErrorArg;
final Scriptable options = optionsArg;
Application.getApplication().invokeLater(new Runnable(){
private final String[] ALLOWED_EXTENSIONS = {"jpq","jpeg","png"};
public void run() {
FileConnection fconn = null;
try{
MultiFormatWriter writer = new MultiFormatWriter();
int width = 50;
int height = 50;
BarcodeFormat format = BarcodeFormat.QR_CODE;
Hashtable hints = new Hashtable(2);
String filePath = "file:///SDCard/";
String fileName = ""+(new Date()).getTime();
String fileExtension = "png";
if(options != null){
Object widthObj =options.getField("width");
if(widthObj != UNDEFINED){
width =((Integer)widthObj).intValue();
}
Object heightObj = options.getField("height");
if(heightObj != UNDEFINED){
height = ((Integer)heightObj).intValue();
}
Object formatObj = options.getField("format");
if(formatObj != UNDEFINED){
format = BarcodeFormat.valueOf(((String)formatObj).toUpperCase());
}
//Hints
Object charSetObj = options.getField("characterSet");
if(charSetObj != UNDEFINED){
hints.put(EncodeHintType.CHARACTER_SET, (String)charSetObj);
}
Object errorCorrectionObj = options.getField("errorCorrection");
if(errorCorrectionObj != UNDEFINED){
hints.put(EncodeHintType.ERROR_CORRECTION, (Integer)errorCorrectionObj);
}
Object filePathObj = options.getField("filePath");
if(filePathObj != UNDEFINED){
String filePathOrig = (String)filePathObj;
fileExtension = filePathOrig.substring(filePathOrig.lastIndexOf('.')+1);
fileName = filePathOrig.substring(filePathOrig.lastIndexOf('/')+1,filePathOrig.lastIndexOf('.'));
filePath = filePathOrig.substring(0, filePathOrig.lastIndexOf('/'));
boolean validExtension = false;
for( int i =0; i< ALLOWED_EXTENSIONS.length;i++){
validExtension |= fileExtension.equals(ALLOWED_EXTENSIONS[i]);
}
if(!validExtension){
fileExtension = "png";
}
}
}
ByteMatrix bm;
try{
bm = writer.encode(contents, format, width, height,hints);
}catch(ClassCastException cce){
throw new Exception("ZXing Barcode Writer FAILURE - try different paramteres and pray");
}
//Bitmap b = BarcodeBitmap.createBitmap(bm,0);
Bitmap b = new Bitmap(width,height);
byte[][] array = bm.getArray();
//iterate through the matrix and draw the pixels to the image
//a Jeff and BT super hack to make generating a barcode work
for (int y = 0; y < height; y++) {
int[] argbArray = new int[width];
for (int x = 0; x < width; x++) {
int grayValue = array[y][x] & 0xff;
int pixel = (grayValue == 0 ? 0xFF000000 : 0xFFFFFFFF);
argbArray[x] = pixel;
}
b.setARGB(argbArray,0, width, 0,y, width, 1);
}
fconn = (FileConnection)Connector.open(filePath+"/"+fileName+"."+fileExtension, Connector.READ_WRITE);
if(fconn.exists()){
fileName += (new Date()).getTime();
fconn.close();
fconn = (FileConnection)Connector.open(filePath+"//"+fileName+"."+fileExtension, Connector.READ_WRITE);
}
fconn.create();
OutputStream outputStream = fconn.openOutputStream();
EncodedImage encodedImage;
if(fileExtension.equals("jpg") || fileExtension.equals("jpeg")){
encodedImage = JPEGEncodedImage.encode(b, 100);
}else{
encodedImage = PNGEncodedImage.encode(b);
}
byte[] imageBytes = encodedImage.getData();
outputStream.write(imageBytes);
outputStream.close();
fconn.close();
Object[] args = {filePath+"//"+fileName+"."+fileExtension};
generatededCallback.invoke(thiz, args);
}catch(Exception e){
throwError(e);
}finally{
try {
fconn.close();
} catch (IOException e) {
throwError(e);
}
}
}
public void throwError(Exception e){
if(errorCallback != null){
try {
errorCallback.invoke(thiz, new Object[] {new ErrorObject(-1, e.getMessage())} );
} catch (Exception e1) {
}
}
}