from kivy.app import App
from kivy.lang import Builder
from kivy.uix.button import Button
from kivy.properties import NumericProperty, ReferenceListProperty, ObjectProperty, StringProperty
from kivy.uix.boxlayout import BoxLayout

# Set screen size
from kivy.config import Config
Config.set('graphics', 'width', '720')
Config.set('graphics', 'height', '1280')



class MainScreen(BoxLayout):

    def __init__(self):
        super(MainScreen, self).__init__()
        categories = ["Hammer", "Spikerpistol", "Sager", "Vinkelsliper", "Vifteovn"]
        for category in categories:
            self.add_widget(CategoryButton(category_name = category))

    def return_id(foo):
        print(root.category_id)



class CategoryButton(Button):
    category_id = NumericProperty()
    category_name = StringProperty()



class ToolTag(App):
    def build(self):
        self.title = "ToolTag snekker-app"

        main_screen = MainScreen()
        categories = ["Hammer", "Spikerpistol", "Sager", "Vinkelsliper", "Vifteovn"]
        #for category in categories:
        #   main_screen.add_widget(CategoryButton(category_name = category))

        return main_screen

if __name__ ==  '__main__':
    ToolTag().run()





##### KV-FILE#######

#:kivy 1.9.1

<MainScreen>:
    orientation: 'vertical'
    CategoryButton:
        on_release: root.return_id()

<CategoryButton>:
    text: root.category_name