64 lines
1.7 KiB
Python
64 lines
1.7 KiB
Python
# -*- coding: utf-8 -*-
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'''
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Container Example
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==============
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This example shows how to add a container to our screen.
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A container is simply an empty place on the screen which
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could be filled with any other content from a .kv file.
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'''
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from kivy.app import App
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from kivy.lang import Builder
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from kivy.uix.boxlayout import BoxLayout
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from kivy.properties import ObjectProperty
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import kivy
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kivy.require('1.8.0')
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class RootWidget(BoxLayout):
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'''Create a controller that receives a custom widget from the kv lang file.
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Add an action to be called from a kv file.
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'''
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container = ObjectProperty(None)
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class EzsApp(App):
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'''This is the app itself'''
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def build(self):
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'''This method loads the root.kv file automatically
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:rtype: none
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'''
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# loading the content of root.kv
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self.root = Builder.load_file('kv/root.kv')
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def next_screen(self, screen):
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'''Clear container and load the given screen object from file in kv
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folder.
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:param screen: name of the screen object made from the loaded .kv file
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:type screen: str
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:rtype: none
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'''
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filename = screen + '.kv'
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# unload the content of the .kv file
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# reason: it could have data from previous calls
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Builder.unload_file('kv/' + filename)
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# clear the container
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self.root.container.clear_widgets()
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# load the content of the .kv file
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screen = Builder.load_file('kv/' + filename)
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# add the content of the .kv file to the container
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self.root.container.add_widget(screen)
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if __name__ == '__main__':
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'''Start the application'''
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EzsApp().run()
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