VulcanBoard/widget.py

# Kivy example for the Popup widget

# Program to Show how to create a switch
# import kivy module
import kivy

# base Class of your App inherits from the App class.
# app:always refers to the instance of your application
from kivy.app import App

# this restrict the kivy version i.e
# below this kivy version you cannot
# use the app or software
kivy.require("1.9.0")

# The Button is a Label with associated actions
# that is triggered when the button
# is pressed (or released after a click/touch).
from kivy.uix.button import Button


# The GridLayout arranges children in a matrix.
# It takes the available space and
# divides it into columns and rows,
# then adds widgets to the resulting “cells”.
from kivy.uix.gridlayout import GridLayout

# Popup widget is used to create popups.
# By default, the popup will cover
# the whole “parent” window.
# When you are creating a popup,
# you must at least set a Popup.title and Popup.content.
from kivy.uix.popup import Popup

# The Label widget is for rendering text.
from kivy.uix.label import Label

# to change the kivy default settings we use this module config
from kivy.config import Config

# 0 being off 1 being on as in true / false
# you can use 0 or 1 && True or False
Config.set("graphics", "resizable", True)


# Make an app by deriving from the kivy provided app class
class PopupExample(App):
    # override the build method and return the root widget of this App

    def build(self):
        # Define a grid layout for this App
        self.layout = GridLayout(cols=1, padding=10)

        # Add a button
        self.button = Button(text="Click for pop-up")
        self.layout.add_widget(self.button)

        # Attach a callback for the button press event
        self.button.bind(on_press=self.onButtonPress)

        return self.layout

    # On button press - Create a popup dialog with a label and a close button
    def onButtonPress(self, button):

        layout = GridLayout(cols=1, padding=10)

        popupLabel = Label(text="Click for pop-up")
        closeButton = Button(text="Close the pop-up")

        layout.add_widget(popupLabel)
        layout.add_widget(closeButton)

        # Instantiate the modal popup and display
        popup = Popup(
            title="Demo Popup",
            content=layout,
            size_hint=(None, None),
            size=(200, 200),
        )
        popup.open()

        # Attach close button press with popup.dismiss action
        closeButton.bind(on_press=popup.dismiss)


# Run the app
if __name__ == "__main__":
    PopupExample().run()