gui-old/helpscreen.py at master · rpi-alpaca/gui-old · GitHub

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from kivy.uix.tabbedpanel import TabbedPanelHeader
from kivy.uix.tabbedpanel import TabbedPanelItem
from kivy.uix.tabbedpanel import TabbedPanel

from kivy.uix.floatlayout import FloatLayout
from kivy.uix.stacklayout import StackLayout
from kivy.uix.boxlayout import BoxLayout

from kivy.graphics import Rectangle, Color
from kivy.uix.screenmanager import Screen
from kivy.uix.button import Button
from kivy.uix.label import Label

from kivy.lang import Builder

import configparser
import json

from Navigation import NavigationBar
from Navigation import NavigationButton

Builder.load_file('helpscreen.kv')

class HelpPanelsHeader(TabbedPanelHeader):
	pass

class HelpPanels(TabbedPanel):
	pass

def createInfoTab(stringDict, tabName):
	tab = TabbedPanelItem()
	tab.name = tabName
	tab.text = stringDict[tabName]["Title"]

	titleText = Label(text=stringDict[tabName]["Title"])
	bodyText = Label(text=stringDict[tabName]["Body"])

	tab.add_widget(titleText)
	tab.add_widget(bodyText)

	return tab

def createHelpPanels(language):
	infoPanels = HelpPanels()
	infoPanels.name = "infoPanel"

	helpStrings = json.load( open("LangStrings.json") )

	tabsToAdd = []
	tabsToAdd.append( createInfoTab(helpStrings[language], "helpWhat") )
	tabsToAdd.append( createInfoTab(helpStrings[language], "helpHow")  )
	tabsToAdd.append( createInfoTab(helpStrings[language], "helpWho")  )

	# Add in each new tab to the main panels
	for tab in tabsToAdd:
		infoPanels.add_widget(tab)

	return infoPanels

# Main class for the help menu to build on top of
class HelpScreen(Screen):
	def __init__(self, config, **kwargs):
		self.config = config
		super().__init__(**kwargs)

		layout = StackLayout()
		layout.name = "Layout"

		infoPanels = createHelpPanels(config["DISPLAY"]["language"])

		navBar = NavigationBar()
		returnButton = NavigationButton(name="Return", text="Return to home")
		returnButton.bind(on_press=self.returnHome)
		navBar.add_widget(returnButton)

		layout.add_widget(infoPanels)
		layout.add_widget(navBar)
		self.add_widget(layout)

	def on_pre_enter(self):
		self.updateScreenLanguage(self.config["DISPLAY"]["language"])

	def updateScreenLanguage(self, language):
		helpStrings = json.load( open("LangStrings.json") )
		stringsOfLanguage = helpStrings[language]

		# Magic numbers get the layout of the screen, then the tabbed panel object,
		#	then the tabs within it.
		for tab in (self.children[0].children[1].tab_list):
			print(tab.name)
			tab.text = stringsOfLanguage[tab.name]["Title"]
			tab.content.text = stringsOfLanguage[tab.name]["Body"]

	def returnHome(self, instance):
		self.manager.transition.direction = 'up'
		self.manager.current = 'Menu'