English, Special Symbol and numbers keyboard for Windows and linux

Usage

for keyboard use CustomKeyBoard.

const like = 'sample';
TextEditingController controller = TextEditingController;
CustomKeyBoard(
controller: controller, // required TextEditingController
maxLength: 12,
backgroundColor = Colors.grey, 
buttonColor = Colors.white,
iconColor = Colors.black,
backgroundOpacity = 0.3,
textSize = 25,
onSubmit: (){          // required
Navigator.pop(context);
},
);

In CustomKeyBoard you can change the length, backgroundColor, buttonColor, iconColor, backgroundOpacity, textSize

In SepcialSymbolNumPad you can change the buttonSize, buttonColor, iconColor, maxLength also you can put if its phone number or if it is just a number by bool isNotPhoneNumber.