metronome.kv

#: import mtr metronome

<BeatBar>:
#    canvas:
#        Color:
#            rgba: (0, 0, 0, 0.5)
#        Line:
#            points:
#                [self.x, self.y,
#                self.x, self.y + self.height,
#                self.x + self.width, self.y + self.height,
#                self.x + self.width, self.y]
#            width: 2
#            joint: 'round'
#            close: True

<Metronome>:
    id: metronome
    box: box
    beatbar: beatbar
    buttonbar: buttonbar
    titlebar: titlebar
    top: self.top_prop
    size_hint: [None, None]
    size: [800, 300]
    BoxLayout:
        id: box
        pos_hint: {"center": [0.5, 0.5]}
        size_hint: [None, None]
        orientation: "vertical"
        canvas:
            Color:
                rgba: (1, 1, 1, 0.5)
            Rectangle:
                size: self.size
                pos: self.pos
        TitleBar:
            id: titlebar
            metronome: metronome
            size_hint: [1, 0.3]
            Button:
                size_hint: [0.25, 1]
                text: "-"
                font_name: "./fonts/Impact"
                font_size: 50
                on_press: metronome.increment_bpm(-1)
            TextInput:
                size_hint: [0.5, 1]
                text: str(metronome.bpm) + " BPM"
                font_name: "./fonts/Impact"
                font_size: 26
                valign: True
                halign: "center"
                multiline: False
                on_focus: titlebar.validate_text(self, self.text)
            Button:
                size_hint: [0.25, 1]
                text: "+"
                font_name: "./fonts/Impact"
                font_size: 50
                on_press: metronome.increment_bpm(1)

        FloatLayout:
            canvas:
                PushMatrix
                Color:
                    rgba: (0, 0, 0, 0.5)
                Translate:
                    y: -self.height
                    x: self.width/2 - self.height
                Ellipse:
                    size: [self.height*2, self.height*2]
                    pos: self.pos
                    angle_start: -root.max_needle_angle
                    angle_end: root.max_needle_angle
                PopMatrix
                PushMatrix
                Rotate:
                    angle: root.needle_angle
                    axis: 0, 0, 1
                    origin: [self.width * 0.5 + self.x, self.y]
                Color:
                    rgba: (0, 0, 0, 0.5)
                Rectangle:
                    size: [self.width * 0.02, self.height * 0.85]
                    pos: [self.width * 0.5 - self.width * 0.01 + self.x,  self.y]
                PopMatrix

        BeatBar:
            id: beatbar
            size_hint: [1, 0.4]
            num_beats: metronome.num_beats

        BoxLayout:
            id: buttonbar
            size_hint: [1, 0.2]
            pos_hint: {"center_x": 0.5, "bottom": 0}
            Button:
                text: "Play"
                on_press: root.play()
            Button:
                text: "Stop"
                on_press: root.stop()