appendBitmap method
Implementation
Map<String, dynamic> appendBitmap(
dynamic data, int width, int height, int posX, int posY) {
Map<String, dynamic> cmd = {"id": "addImage", "value": data};
cmd['width'] = width;
cmd['height'] = height;
cmd['posX'] = posX;
cmd['posY'] = posY;
return cmd;
}