gui.kv

# coding=utf-8
<Base>:
    hex_input: hex_input
    kivy_input: kivy_input
    slider: slider
    back_color: 0, 0, 0, 1
    orientation: "vertical"
    canvas:
        Color:
            rgba: root.back_color
        Rectangle:
            size: self.size
            pos: self.pos
    BoxLayout:
        id: box
        size_hint: None, None
        size: 460, 150
        pos_hint: {"center_x": .5, "center_y": .5}
        GridLayout:
            size_hint_x: .9
            pos_hint: {"center": (.5, .5)}
            rows: 2
            Label:
                size_hint_x: .2
                text: "Hex Values"
            TextInput:
                id: hex_input
                size_hint_x: .4
                multiline: False
                padding_x: "10dp"
                padding_y: (self.height - self.line_height) * .5
                on_text_validate: root.calc_hex(self.text)
            Button:
                id: hex_btn
                size_hint_x: .4
                text: "Calculate Kivy Values"
                on_press: root.calc_hex(hex_input.text)
            Label:
                size_hint_x: .2
                text: "Kivy Values"
            TextInput:
                id: kivy_input
                size_hint_x: .4
                multiline: False
                padding_x: "10dp"
                padding_y: (self.height - self.line_height) * .5
                on_text_validate: root.calc_kivy(self.text)
            Button:
                id: kivy_btn
                size_hint_x: .4
                text: "Calculate Hex Values"
                on_press: root.calc_kivy(kivy_input.text)
        BoxLayout:
            orientation: "vertical"
            size_hint_x: .1
            Label:
                size_hint_y: .1
                text: "Alpha"
            Slider:
                id: slider
                size_hint_y: .8
                orientation: "vertical"
                range: 0, 1
                step: .05
                value: .5
                padding: sp(18)
                on_value: root.on_slider(hex_input.text, kivy_input.text)
            Label:
                size_hint_y: .1
                text: "{:.2f}".format(slider.value)