main.py for Kivy Lesson 4

# write your app here

from kivy.app import App
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.uix.textinput import TextInput
from kivy.core.window import Window
from kivy.uix.scrollview import ScrollView
from instructions import txt_instruction, txt_test1, txt_test2, txt_test3, txt_sits
from ruffier import test

from seconds import Seconds
from sits import Sits
from runner import Runner

Window.clearcolor = (.87, 0.54, 0.8, 0.3)
btn_color = (0.98, 0.31, 0.8, 1)

age = 7
name = ""
p1, p2, p3 = 0, 0, 0

def check_int(str_num):
    try:
        return int(str_num)
    except:
        return False

class InstrScr(Screen):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        instr = Label(text=txt_instruction)
        lbl1 = Label(text='Enter your name:', halign='right')
        self.in_name = TextInput(multiline=False)
        lbl2 = Label(text='Enter your age:', halign='right')
        self.in_age = TextInput(text='7', multiline=False)
        self.btn = Button(text='Start', size_hint=(0.3, 0.2), pos_hint={'center_x': 0.5})
        self.btn.background_color = btn_color
        self.btn.on_press = self.next
        line1 = BoxLayout(size_hint=(0.8, None), height='30sp')
        line2 = BoxLayout(size_hint=(0.8, None), height='30sp')
        line1.add_widget(lbl1)
        line1.add_widget(self.in_name)
        line2.add_widget(lbl2)
        line2.add_widget(self.in_age)
        outer = BoxLayout(orientation='vertical', padding=8, spacing=8)
        outer.add_widget(instr)
        outer.add_widget(line1)
        outer.add_widget(line2)
        outer.add_widget(self.btn)
        self.add_widget(outer)
    def next(self):
        name = self.in_name.text
        age = check_int(self.in_age.text)
        if age == False or age < 7:
            age = 7
            self.in_age.text = str(age)
        else:
            self.manager.current = 'pulse1'

class PulseScr(Screen):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        self.next_screen = False

        instr = Label(text=txt_test1)
        self.lbl_sec = Seconds(15)
        self.lbl_sec.bind(done=self.sec_finished)


        line = BoxLayout(size_hint=(0.8, None), height='30sp')
        lbl_result = Label(text='Enter the result:', halign='right')
        self.in_result = TextInput(text='0', multiline=False)
        self.in_result.set_disabled(True)

        line.add_widget(lbl_result)
        line.add_widget(self.in_result)
        self.btn = Button(text='Start', size_hint=(0.3, 0.4), pos_hint={'center_x': 0.5})
        self.btn.background_color = btn_color
        self.btn.on_press = self.next
        outer = BoxLayout(orientation='vertical', padding=8, spacing=8)
        outer.add_widget(instr)
        #outer.add_widget(lbl1)
        outer.add_widget(self.lbl_sec)
        outer.add_widget(line)
        outer.add_widget(self.btn)
        self.add_widget(outer)

    def sec_finished(self, *args):
        self.next_screen = True
        self.in_result.set_disabled(False)
        self.btn.set_disabled(False)
        self.btn.text = 'Continue'

    def next(self):
        if not self.next_screen:
            self.btn.set_disabled(True)
            self.lbl_sec.start()
        else:
            global p1
            p1 = check_int(self.in_result.text)
            if p1 == False or p1 <= 0:
                p1 = 0
                self.in_result.text = str(p1)
            else:
                self.manager.current = 'sits'

class CheckSits(Screen):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        self.next_screen = False

        instr = Label(text=txt_sits, size_hint=(0.5, 1))
        self.lbl_sits = Sits(30)
        self.run = Runner(total=30, steptime=1.5, size_hint=(0.4, 1))
        self.run.bind(finished=self.run_finished)

        line = BoxLayout()
        vlay = BoxLayout(orientation='vertical', size_hint=(0.3, 1))
        vlay.add_widget(self.lbl_sits)
        line.add_widget(instr)
        line.add_widget(vlay)
        line.add_widget(self.run)

        self.btn = Button(text='Start', size_hint=(0.3, 0.2), pos_hint={'center_x': 0.5})
        self.btn.background_color = btn_color
        self.btn.on_press = self.next

        outer = BoxLayout(orientation='vertical', padding=8, spacing=8)
        outer.add_widget(line)
        outer.add_widget(self.btn)

        self.add_widget(outer)

    def run_finished(self, instance, value):
        self.btn.set_disabled(False)
        self.btn.text = 'Continue'
        self.next_screen = True

    def next(self):
        if not self.next_screen:
            self.btn.set_disabled(True)
            self.run.start()
            self.run.bind(value=self.lbl_sits.next)
        else:
            self.manager.current = 'pulse2'

class PulseScr2(Screen):
    def __init__(self, **kwargs):
        self.next_screen = False

        self.stage = 0
        super().__init__(**kwargs)
        instr = Label(text=txt_test3)
        line1 = BoxLayout(size_hint=(0.8, None), height='30sp')
        self.lbl_sec = Seconds(15)
        self.lbl_sec.bind(done=self.sec_finished)
        self.lbl1 = Label(text='Calculate your heart rate')

        lbl_result1 = Label(text='Result:', halign='right')
        self.in_result1 = TextInput(text='0', multiline=False)
        line1.add_widget(lbl_result1)
        line1.add_widget(self.in_result1)
        line2 = BoxLayout(size_hint=(0.8, None), height='30sp')
        lbl_result2 = Label(text='Result after rest:', halign='right')
        self.in_result2 = TextInput(text='0', multiline=False)

        self.in_result1.set_disabled(True)
        self.in_result2.set_disabled(True)
        line2.add_widget(lbl_result2)
        line2.add_widget(self.in_result2)
        self.btn = Button(text='Start', size_hint=(0.3, 0.5), pos_hint={'center_x': 0.5})
        self.btn.background_color = btn_color
        self.btn.on_press = self.next
        outer = BoxLayout(orientation='vertical', padding=8, spacing=8)
        outer.add_widget(instr)
        outer.add_widget(self.lbl1)
        outer.add_widget(self.lbl_sec)
        outer.add_widget(line1)
        outer.add_widget(line2)
        outer.add_widget(self.btn)
        self.add_widget(outer)

    def sec_finished(self, *args):
        if self.lbl_sec.done == True:
            if self.stage == 0:
                # finished the first count, resting
                self.stage = 1
                self.lbl1.text = 'Rest'
                self.lbl_sec.restart(30)
                self.in_result1.set_disabled(False)
            elif self.stage == 1:
                # finished rest, calculating
                self.stage = 2
                self.lbl1.text='Calculate your heart rate'
                self.lbl_sec.restart(15)
            elif self.stage == 2:
                self.in_result2.set_disabled(False)
                self.btn.set_disabled(False)
                self.btn.text = 'End'
                self.next_screen = True

    def next(self):
        if not self.next_screen:
            self.btn.set_disabled(True)
            self.lbl_sec.start()
        else:
            global p2, p3
            p2 = check_int(self.in_result1.text)
            p3 = check_int(self.in_result2.text)
            if p2 == False:
                p2 = 0
                self.in_result1.text = str(p2)
            elif p3 == False:
                p3 = 0
                self.in_result2.text = str(p3)
            else:
                # transitioning
                self.manager.current = 'result'

class Result(Screen):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        self.outer = BoxLayout(orientation='vertical', padding=8, spacing=8)
        self.instr = Label(text = '')
        self.outer.add_widget(self.instr)
        self.add_widget(self.outer)
        self.on_enter = self.before

    def before(self):
        global name
        self.instr.text = name + '\n' + test(p1, p2, p3, age)

class HeartCheck(App):
    def build(self):
        sm = ScreenManager()
        sm.add_widget(InstrScr(name='instr'))
        sm.add_widget(PulseScr(name='pulse1'))
        sm.add_widget(CheckSits(name='sits'))
        sm.add_widget(PulseScr2(name='pulse2'))
        sm.add_widget(Result(name='result'))
        return sm

app = HeartCheck()
app.run()