Add please native int and float spinbox to uix

[o-murphy]

Description of the Feature

Please add to uix components SpinBox widget that would accept working with native int/float value, not str as MDTextField. I must have attributes as min/max value, decimals, step and formatter to display value with defined attributes. It have looks and uses as numeric input field in html or even SpinBox in Qt library

Code and Logs

Something such as

from kivy.app import App
from kivy.lang import Builder

class MDSpinBox(MDTextField):
    def __init__(self, *args, **kwargs):
        super(MDSpinBox, self).__init__(*args, **kwargs)
        self._value: float = 0
        self.max_value: float = 0
        self.min_value: float = 100
        self.decimals: int = 2
        self.step: float = 1
        self.input_filter = 'float'

        self.prefix = ''
        self.suffix = ''

    @property
    def value(self) -> float:
        return self._value

    @value.setter
    def value(self, value: float):
        self.set_text(self, str(value))

    def keyboard_on_key_down(self, window, keycode, text, modifiers):
        if keycode == (273, 'up'):
            self.increment()
        elif keycode == (274, 'down'):
            self.decrement()
        super(MDSpinBox, self).keyboard_on_key_down(window, keycode, text, modifiers)

    def increment(self):
        self.value += self.step

    def decrement(self):
        self.value -= self.step

    def set_text(self, instance_text_field, text: str) -> None:
        if text == '':
            text = '0'
        try:
            new_decimals = int(float(text) * 10**self.decimals)
            cur_decimals = int(self.value * 10**self.decimals)
            if cur_decimals != new_decimals:
                self._value = float(text)
        except ValueError as err:
            logging.warning(err)
        formatted_text = '{:.{}f}'.format(self.value, self.decimals)
        super(MDSpinBox, self).set_text(instance_text_field, formatted_text)

    def insert_text(self, substring, from_undo=False):
        substring = substring.replace(',', '')
        if substring == '.':
            self.text = self.text[:self.cursor_index()] + substring
        else:
            super(MDSpinBox, self).insert_text(substring, from_undo)

[HeaTTheatR]

What is SpinBox?

[o-murphy]

What is SpinBox?

this