GravBoxMaster.py 文件源码

def __init__(self, **kwargs):
        super(AboutScreen, self).__init__(**kwargs)

        layout = FloatLayout()
        layout.width = Window.width
        layout.height = Window.height
        layout.x = Window.width/2 - layout.width/2
        layout.y = Window.height/2 - layout.height/2
        self.add_widget(layout)

        img = Image(source = self.aboutImage)
        img.size = (Window.width*1.0, Window.height*1.0)
        img.pos = (-Window.width*0.0, -Window.height*0.0)
        img.opacity = 0.4
        self.add_widget(img)

        aboutText = Label(text= 'GravBox is the interface application for the Augmented Reality (AR) Sandbox for gravitational dynamics simulations designed and built\nby Dr. Hai Fu\'s Introduction to Astrophysics class during the 2016-2017 academic year and beyond.\nGravBox itself was designed by Zachary Luppen, Erin Maier, and Mason Reed.\n\nAR Sandbox is the result of an NSF-funded project on informal science education for freshwater lake and watershed science developed by the\nUC Davis\' W.M. Keck Center for Active Visualization in the Earth Sciences (KeckCAVES),\ntogether with the UC Davis Tahoe Environmental Research Center, Lawrence Hall of Science, and ECHO Lake Aquarium and Science Center.', halign='center', valign='center')
        aboutText.pos = (.25, .25)
        self.add_widget(aboutText)

        backBtn = MyButton(text = 'BACK') # back button
        backBtn.size_hint = (.1, .1)
        backBtn.pos_hint ={'x': 0, 'y': .90}
        backBtn.background_color = [.4, .4, .4, 1]
        backBtn.bind(on_release = self.backButton) #when the button is released the callback function is called
        self.add_widget(backBtn)