So legen Sie Hintergrundfarbe in Kivy fest

Question

from kivy.app import App 
from kivy.graphics import Color, Rectangle 
from kivy.uix.button import Button 
from kivy.uix.gridlayout import GridLayout 
from kivy.uix.label import Label 
from kivy.uix.screenmanager import ScreenManager, Screen, FadeTransition 


#from kivy.config import Config 
#Config.set('graphics','fullscreen','auto') 

sm = ScreenManager(transition=FadeTransition()) 

class myGridLayout(GridLayout): 
    pass 

class secondScreen(GridLayout, Screen): 
    def __init__(self, **kwargs): 
     super(secondScreen, self).__init__(**kwargs) 

     self.cols=1 
     self.add_widget(Label(text='Second Screen')) 
     self.btn1 = Button(text='Home') 
     self.add_widget(self.btn1) 
     self.btn1.bind(on_release=self.page1Func) 


    def page1Func(self, *args): 
     self.manager.current = 'page1' 

class HomeScreen(GridLayout, Screen): 
    def __init__(self, **kwargs): 
     super(HomeScreen, self).__init__(**kwargs) 

     with self.canvas: 
      Color(rgba=[1,0,0,1]) 
      Rectangle(pos=self.pos, size=self.size) 


     self.cols=1 
     self.add_widget(Label(text='[color=ec6135]Carloman Systems[/color]',font_size=50, markup=True)) 

     self.layout_name=myGridLayout(spacing=50,padding=[50 , 0 , 50 , -50]) 

     self.add_widget(self.layout_name) 



     self.layout_name.cols=3 

     self.btn1=Button(background_normal='./image-dark.png', 
         background_down='./image.png') 
     self.layout_name.add_widget(self.btn1) 
     self.btn1.bind(on_release = self.page2Func) 

     self.btn2=Button(background_normal='./image.png', 
         background_down='./image-dark.png') 
     self.layout_name.add_widget(self.btn2) 

     self.btn3=Button(background_normal='./image.png', 
         background_down='./image-dark.png') 
     self.layout_name.add_widget(self.btn3) 

     self.names_panel=myGridLayout() 
     self.add_widget(self.names_panel) 
     self.names_panel.cols=3 

     self.names_panel.add_widget(Label(text='btn1', font_size=30)) 
     self.names_panel.add_widget(Label(text='btn2', font_size=30)) 
     self.names_panel.add_widget(Label(text='btn3', font_size=30)) 


    def page2Func(self, *args): 
     self.manager.current = 'page2' 
     #self.popup = Popup(title='Test popup', content=Label(text='Hello world'), auto_dismiss=False) 


sm.add_widget(HomeScreen(name='page1')) 
sm.add_widget(secondScreen(name='page2')) 
sm.current='page1' 

class MainScreen(App): 
    def build(self): 
     return sm 

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

Ich verwende diesen Code für meine GUI. und ich verwende diesen Code für die Hintergrundfarbe.

Rectangle(pos=self.pos, size=self.size) 

aber es zeigt ein kleines Rechteck in der unteren linken Ecke. Es ist nicht im Vollbildmodus. ich bin neu in kivy. hilf mir bitte Jungs, bitte. Ich möchte das Rechteck, das den gesamten Bildschirm abdeckt.

Answer 1

Sie benötigen pos und Größe binden so dass jede Änderung

... #inside __init__ 
def draw_background(widget, prop): 
    with widget.canvas: 
     Color(rgba=[1,0,0,1]) 
     Rectangle(pos=self.pos, size=self.size) 
self.bind(size=draw_background) 
self.bind(pos=draw_background) 
...