I've been wondering if there is a way to remove the title bar of a popup window:
From this
To this
Thanks in advance!
Edit: Code reference for future use:
<MyPopup#Popup>:
size_hint: None, None
size: 300, 200
title: 'Close'
title_color: 0.7, 0, 0, 0.9
separator_color: 0.4, 0.4, 0.4, 1
title_align: 'center'
BoxLayout:
orientation: 'vertical'
padding: 5, 5, 5, 5
cols: 2
Label:
color: 0.7, 0, 0, 0.9
center_x: root.center_x
center_y: root.center_y
text: 'Are you sure you want to exit?'
BoxLayout:
size_hint: 1, 0.6
Button:
color: 0.7, 0, 0, 0.9
background_color: 0.4, 0.4, 0.4, 0.05
text: 'Yes'
on_release: exit()
Button:
color: 0.7, 0, 0, 0.9
background_color: 0.4, 0.4, 0.4, 0.05
text: 'No'
on_release: root.dismiss()
Use a ModalView instead. This is the base class for popup-style behaviour, Popup is a ModalView with the title added.
You only need to set title property to "" and separator_height property to 0:
Example:
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.popup import Popup
from kivy.lang import Builder
Builder.load_string("""
<NoTitleDialog>:
title: "" # <<<<<<<<
separator_height: 0 # <<<<<<<<
size_hint: None, None
size: 400, 200
BoxLayout:
orientation: "vertical"
Label:
text: "Are you sure you want to exit?"
BoxLayout:
size_hint_y: 0.3
Button:
text: "Yes"
Button:
text: "No"
""")
class MainWindow(BoxLayout):
def __init__(self, **kwargs):
super(MainWindow, self).__init__(**kwargs)
self.dialog = NoTitleDialog()
self.dialog.open()
class NoTitleDialog(Popup):
pass
class Example(App):
def build(self):
return MainWindow()
if __name__ == '__main__':
Example().run()
Related
I have tried for many hours, reading the wiki and experimenting in different ways but I have not been able to do it, can someone please explain to me explicitly (showing me) how to do this without only linking me to the wiki. Below you will find my code copied, where you read on_release: under the button with its id "settings", I want it to actually happen not on release but 1 sec after I have pressed the button.
.py file:
import kivy
from kivy.app import App
from kivy.uix.floatlayout import FloatLayout
from kivy.config import Config
from kivy.core.window import Window
from kivy.uix.boxlayout import BoxLayout
#title
#self.title('Past Paper Question Search 🔎')
#background
Window.clearcolor = (0.145, 0.145, 0.149, 1)
#resizability
Config.set('graphics', 'resizable', True)
class FloatLayout(FloatLayout):
def __init__(self, **kwargs):
super(FloatLayout, self).__init__(**kwargs)
class GUIApp(App):
def build(self):
return FloatLayout()
if __name__ == "__main__":
GUIApp().run()
.kv file:
<FloatLayout>:
BoxLayout:
id: searchBox
orientation: 'horizontal'
size_hint_x: 0.6
size_hint_y: 0.07
pos_hint: {"x":0.2, "y":0.7}
TextInput:
background_color: 0.275, 0.275, 0.275, 1
multiline: False
font_size: self.height/1.6
foreground_color: [1, 1, 1, 1]
hint_text: "Search"
hint_text_color: [1, 1, 1, 0.3]
cursor_color: [1, 1, 1, 1]
padding: [(self.height)/2-(self.line_height/2.0), (self.height)/2-(self.line_height/2.0), 6, 0]
Button:
size_hint_y: 1
width: self.height
size_hint_x: None
border: 0, 0, 0, 0
background_normal: "resources/Search.png"
background_down: "resources/Search_pressed.png"
Button:
id: settings
size_hint_y: 0.095
width: self.height
size_hint_x: None
border: 0, 0, 0, 0
background_normal: "resources/empty.png"
background_down: "resources/empty.png"
pos_hint: {"x":0.92, "y":0.9}
on_press: gif.anim_delay = 0.10
on_press: gif._coreimage.anim_reset(True)
on_release: settings.pos_hint= {"x":0.2, "y":2}
on_release: close.pos_hint= {"x":0.92, "y":0.9}
on_release: searchBox.pos_hint= {"x":0.2, "y":2.7}
Image:
id: gif
source: 'resources/settings_gif.gif'
center: self.parent.center
size: self.parent.size
anim_delay: -1
anim_loop: 1
allow_stretch: True
Button:
id: close
size_hint_y: 0.095
width: self.height
size_hint_x: None
border: 0, 0, 0, 0
background_normal: "resources/X.png"
background_down: "resources/X.png"
on_press: searchBox.pos_hint= {"x":0.2, "y":0.7}
on_press: settings.pos_hint= {"x":0.92, "y":0.9}
on_press: close.pos_hint= {"x":0.92, "y":2.9}
pos_hint: {"x":0.92, "y":2.9}
Thx in advance
Here is a small example. Read about Clock: https://kivy.org/doc/master/api-kivy.clock.html?highlight=clock#module-kivy.clock
from kivy.app import App
from kivy.lang import Builder
from kivy.clock import Clock
kv = """
BoxLayout:
orientation: 'vertical'
Label:
id: status
Button:
size_hint_y: None
height: 48
text: 'Press'
on_release: app.schedule_action()
"""
class WaitOneSecondApp(App):
def build(self):
return Builder.load_string(kv)
def schedule_action(self):
self.root.ids.status.text = 'Waiting One Second...'
Clock.schedule_once(self.wait_over, 1)
def wait_over(self, dt):
self.root.ids.status.text = 'The wait is over'
WaitOneSecondApp().run()
I want the last button in the pop up to add a label to the previous screen with the text of whatever in entered into the text input in the pop up but I cant find a way to do so, is it possible?
I want the button with id add to add a label to screen the List every time it is clicked, and the text of said label should be whatever value put into text inputs with the ids lab, club, and blub
And if it is possible, how can I do it, any help would be greatly appreciated.
Python :
from kivy.app import App
from kivy.uix.widget import Widget
from kivy.uix.floatlayout import FloatLayout
from kivy.properties import ObjectProperty
from kivy.uix.screenmanager import Screen, ScreenManager
from kivy.uix.textinput import TextInput
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.lang import Builder
from kivy.uix.popup import Popup
import time
from kivy.properties import StringProperty
class Enter_Name(Screen):
input_1 = StringProperty()
def line(self):
App.get_running_app().root.get_screen('list').lab_text = self.airline.text
pass
class Pop(Screen):
air_craft = StringProperty()
def lad(self):
plane = App.get_running_app().root.get_screen('pop').lab_text = self.airplane.text
self.plane = plane
class List(Screen):
Enter_Name.line
def add(self):
show_popup()
def show_popup():
show = Pop()
pop_up_window = Popup(title="Add Route", content=show, size_hint=(None, None), size=(400, 400))
pop_up_window.open()
class WindowManager(ScreenManager):
pass
kv = Builder.load_file("pot.kv")
class am4(App):
def build(self):
return kv
if __name__ == "__main__":
am4().run()
Kivy :
#:kivy 1.0
WindowManager:
Enter_Name
List
Pop
#_______________________________________________________________________________________________________
#LOGIN
#_______________________________________________________________________________________________________
<Enter_Name>
airline: input_1
name: 'enter_name'
id: enter_nom
FloatLayout:
cols: 3
size: root.size
Label:
text: "Name of Airline?"
size_hint: 1, 0.3
pos_hint: {"x": 0, "top":1}
TextInput:
multiline: False
name: 'input_one'
id: input_1
size_hint: 0.6, 0.06
pos_hint: {"x": 0.20, "top":0.6}
Button:
size_hint: 0.2, 0.1
pos_hint: {"x": 0.4, "top":0.4}
text: "Enter"
on_release:
app.root.current = 'list'
root.line()
#_______________________________________________________________________________________________________
#MAIN
#_______________________________________________________________________________________________________
<List>
lab_text: ''
name: 'list'
FloatLayout:
Label:
text: root.lab_text
size_hint: 1, 0.3
pos_hint: {"x": -0.38, "top":1.1}
font_size: 50
Label:
text: '--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------'
size_hint: 1, 0.3
pos_hint: {"x": -0.38, "top":1}
font_size: 50
Button:
text: "Add Route"
size_hint: 0.2, 0.1
pos_hint: {"x":0.79, "top":0.99}
on_release: root.add()
<Pop>
name: "pop"
airplane: air_craft
FloatLayout:
Label:
id: lab
text: "Aircraft"
pos_hint: {"x": -0.38, "top":1.45}
Label:
id: club
text: "Departure"
pos_hint: {"x": 0, "top":1.45}
Label:
id: blub
text: "Arrival"
pos_hint: {"x": 0.38, "top":1.45}
TextInput:
multiline: False
name: 'aircraft'
id: air_craft
size_hint: 0.23, 0.06
pos_hint: {"x": 0, "top":0.9}
TextInput:
multiline: False
name: 'departure'
id: leaving
size_hint: 0.23, 0.06
pos_hint: {"x": 0.38, "top":0.9}
TextInput:
multiline: False
name: 'arrival'
id: arriving
size_hint: 0.23, 0.06
pos_hint: {"x": 0.76, "top":0.9}
Button:
size_hint: 0.2, 0.1
pos_hint: {"x": 0.4, "top":0.5}
id: add
text: "Add"
on_release:
root.lad()
Here is a modified version of your code that does what I think you want:
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.relativelayout import RelativeLayout
from kivy.properties import ObjectProperty
from kivy.uix.screenmanager import Screen, ScreenManager
from kivy.lang import Builder
from kivy.uix.popup import Popup
from kivy.properties import StringProperty
class Enter_Name(Screen):
input_1 = StringProperty()
def line(self):
App.get_running_app().root.get_screen('list').lab_text = self.airline.text
class ListRow(BoxLayout):
ac = StringProperty('')
arr = StringProperty('')
lv = StringProperty('')
class Pop(RelativeLayout):
def lad(self, ac, arr, lv):
list_scr = App.get_running_app().root.get_screen('list')
if ac != '' or arr != '' or lv != '':
box_layout = list_scr.ids.box_layout
box_layout.add_widget(ListRow(ac=ac, arr=arr, lv=lv))
list_scr.pop.dismiss()
class List(Screen):
Enter_Name.line
pop = ObjectProperty(None)
def add(self):
self.pop = show_popup()
def show_popup():
show = Pop()
pop_up_window = Popup(title="Add Route", content=show, size_hint=(None, None), size=(400, 400))
pop_up_window.open()
return pop_up_window
class WindowManager(ScreenManager):
pass
# kv = Builder.load_file("pot.kv")
kv = Builder.load_string('''
#:kivy 1.0
WindowManager:
Enter_Name
List
#_______________________________________________________________________________________________________
#LOGIN
#_______________________________________________________________________________________________________
<Enter_Name>
airline: input_1
name: 'enter_name'
id: enter_nom
FloatLayout:
cols: 3
size: root.size
Label:
text: "Name of Airline?"
size_hint: 1, 0.3
pos_hint: {"x": 0, "top":1}
TextInput:
multiline: False
name: 'input_one'
id: input_1
size_hint: 0.6, 0.06
pos_hint: {"x": 0.20, "top":0.6}
Button:
size_hint: 0.2, 0.1
pos_hint: {"x": 0.4, "top":0.4}
text: "Enter"
on_release:
app.root.current = 'list'
root.line()
#_______________________________________________________________________________________________________
#MAIN
#_______________________________________________________________________________________________________
<List>
lab_text: ''
name: 'list'
BoxLayout:
id: box_layout
orientation: 'vertical'
size_hint_y: None
height: self.minimum_height
pos_hint: {'top':1}
BoxLayout:
orientation: 'vertical'
size_hint: 1, None
height: 50
BoxLayout:
orientation: 'horizontal'
Label:
id: lab1
text: root.lab_text
size_hint_x: 1
#pos_hint: {"x": -0.38, "top":1}
font_size: 50
Button:
text: "Add Route"
size_hint_x: 0.5
#pos_hint: {"x":0.79, "top":1}
on_release: root.add()
Label:
text: '--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------'
size_hint: 1, 0.3
#pos_hint: {"x": -0.38, "top":0.99}
font_size: 50
<ListRow>:
orientation: 'horizontal'
size_hint: (1, None)
height: self.minimum_height
Label:
text: 'Aircraft: ' + root.ac
halign: 'left'
size_hint: 1, None
height: self.texture_size[1]
Label:
text: 'Leave: ' + root.lv
halign: 'left'
size_hint: 1, None
height: self.texture_size[1]
Label:
text: 'Arrive: ' + root.arr
halign: 'left'
size_hint: 1, None
height: self.texture_size[1]
<Pop>
airplane: air_craft
FloatLayout:
Label:
id: lab
text: "Aircraft"
pos_hint: {"x": -0.38, "top":1.45}
Label:
id: club
text: "Departure"
pos_hint: {"x": 0, "top":1.45}
Label:
id: blub
text: "Arrival"
pos_hint: {"x": 0.38, "top":1.45}
TextInput:
multiline: False
name: 'aircraft'
id: air_craft
size_hint: 0.23, 0.06
pos_hint: {"x": 0, "top":0.9}
TextInput:
multiline: False
name: 'departure'
id: leaving
size_hint: 0.23, 0.06
pos_hint: {"x": 0.38, "top":0.9}
TextInput:
multiline: False
name: 'arrival'
id: arriving
size_hint: 0.23, 0.06
pos_hint: {"x": 0.76, "top":0.9}
Button:
size_hint: 0.2, 0.1
pos_hint: {"x": 0.4, "top":0.5}
id: add
text: "Add"
on_release:
root.lad(air_craft.text, arriving.text, leaving.text)
''')
class am4(App):
def build(self):
return kv
if __name__ == "__main__":
am4().run()
Some of the significant changes that I made:
Redefined the Pop class as extending RelativeLayout instead of Screen and removed Pop from the children of WindowManager.
Defined a ListRow class that is added to the List Screen when the lad() method is called.
Added arguments to the lad() method for information to be added, and added a dismiss() call to close the Popup.
The show_pop() method now returns the created Popup instance which is saved in the List Screen for use of dismiss().
Redesigned the List Screen using a vertical BoxLayout to make adding ListRows simpler.
The kv is loaded using Builder.load_string() in the above code, but that is only for my own convenience.
i'm new in kivy programming and while it seems that there is a lot of documentation about this problem online, i don't seem to understand any of it so i hope you could help.
I have 4 Buttons and a label, by pressing the buttons, i'm hoping to move the label in that direction.
I have two variables pX and pY which are the label's position and want it to update its position each time these two are updated.
Thanks in advance.
// main.py
from kivy.app import App
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.widget import Widget
from kivy.graphics import Rectangle, Color
from kivy.core.window import Window
from kivy.config import Config
from kivy.uix.floatlayout import FloatLayout
Window.size = (900, 600)
Config.set('graphics', 'resizable', True)
class FloatLayout(FloatLayout):
pX = 0.6
pY = 0.1
class FenetreApp(App):
def build(self):
return FloatLayout()
FenetreApp().run()
//fenetre.kv
<Button>:
size_hint: 0.1, 0.1
background_color: 0.1, 0.5, 0.6, 1
<Label>:
size_hint: 0.1, 0.1
background_color: 1, 0, 0, 1
canvas.before:
Color:
rgb: 0.1, 0.6, 0
Rectangle:
pos: self.pos
size: self.size
<FloatLayout>:
Button:
text: "Up"
pos_hint: {"x":0.8, "top":1}
on_press: root.pY= root.pY +0.1
Button:
text: "Down"
pos_hint: {"x":0.8, "top":0.8}
on_press: root.pY= root.pY -0.1
Button:
text: "Left"
pos_hint: {"x":0.7, "top":0.9}
on_press: root.pX= root.pX -0.1
Button:
text: "Right"
pos_hint: {"x":0.9, "top":0.9}
on_press: root.pX= root.pX +0.1
Label:
name: "L1"
text: "I wanna move"
pos_hint: {"x":root.pY, "top":root.pY} ```
You need to use NumericProperty for numeric values.Otherwise, kivy doesn't update its own childrens positions, texts and other stuffs.But if you don't want to use'em, check this code. I hope its clean to understand how it works:
main.py:
from kivy.app import App
from kivy.core.window import Window
from kivy.lang import Builder
Window.size = (900, 600)
kv = Builder.load_string('''
FloatLayout:
pY: .5
pX: .5
Button:
size_hint:.1,.1
background_color: 0.1, 0.5, 0.6, 1
text: "Up"
pos_hint: {"x":0.8, "y":.8}
on_press: self.parent.pY+=.1
Button:
size_hint:.1,.1
background_color: 0.1, 0.5, 0.6, 1
text: "Down"
pos_hint: {"x":0.8, "top":0.8}
on_press: self.parent.pY-=.1
Button:
size_hint:.1,.1
background_color: 0.1, 0.5, 0.6, 1
text: "Left"
pos_hint: {"x":0.7, "top":0.9}
on_press: self.parent.pX-= .1
Button:
size_hint:.1,.1
background_color: 0.1, 0.5, 0.6, 1
text: "Right"
pos_hint: {"x":0.9, "top":0.9}
on_press: self.parent.pX+=.1
Label:
size_hint: .1,.1
text: "I like to moving moving"
pos_hint: {"x":self.parent.pX, "top":self.parent.pY}
''')
class sahm(App):
def build(self):
return kv
if __name__ == '__main__':
sahm().run()
Starting to learn Kivy, I want to create a simple application consisting of a start page (very simple) and a second page where I plot data with a button to delete the old plot and display a new plot.
After some problems to control the size and position of the plot widget, I can show the 2 pages and the buttons. The problem is when I click on the "Update button", a new plot is displayed, but a second figure is added next to the old one. The same kind of problem appears when I return to the second page several times. Do you have any idea on how to reuse the old figure and update/reset it or how to fix this ?
Here is my code :
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.widget import Widget
from kivy.properties import ObjectProperty
from kivy.garden.matplotlib.backend_kivyagg import FigureCanvasKivyAgg
import matplotlib.pyplot as plt
import numpy as np
## Here for providing colour to the background
from kivy.core.window import Window
## Setting the window size
Window.clearcolor = (1, 1, 1, 1) # White background
Window.size = (960, 540)
kv = """
#:import SlideTransition kivy.uix.screenmanager.SlideTransition
<Manager>:
transition: SlideTransition()
StartPage:
name: 'StartPage'
SecondPage:
name: 'SecondPage'
<StartPage>:
canvas:
Color:
rgba: 0.1, 0.1, 1, 0.7
Rectangle:
pos: 0, 11*root.height/12
size: root.width, root.height/12
Rectangle:
pos: 0, 0
size: root.width, root.height/12
BoxLayout:
orientation: 'vertical'
size: root.width, root.height
Button:
size_hint: 0.15, 0.08
pos_hint: {'left': 0, 'top': 1 }
text: 'Go to Second Page'
on_release:
root.manager.current = 'SecondPage'
Button:
size_hint: 0.15, 0.08
pos_hint: {'right': 1, 'bottom': 1 }
text: 'Quit'
on_release: app.stop()
Label:
text: 'Start Screen'
font_size: '20sp'
color: 0,0,0,1
pos_hint:{'x': 0.42, 'y': 0.46 }
<SecondPage>:
box: box
canvas.before:
Color:
rgba: 1, 1, 1, 1
Rectangle:
pos: self.pos
size: self.size
BoxLayout:
id: box
size_hint: 0.8, 0.75
pos_hint:{'x': 0, 'y': 0.1 }
Button:
text:'Start Menu'
font_size: 20
bold: True
size_hint: 0.15, 0.08
pos_hint: {'left': 0, 'top': 1 }
color: 1, 1, 1, 1
on_press: root.manager.current = 'StartPage'
Button:
text:'Update'
font_size: 20
bold: True
size_hint: 0.15, 0.08
pos_hint: {'x':0.8, 'y': 0.5 }
color: 1, 1, 1, 1
on_press: root.Update()
"""
Builder.load_string(kv)
# Start Page
class StartPage(Screen):
pass
#Second Page
class SecondPage(Screen):
box = ObjectProperty(None)
def add_plot(self, N):
phase = np.random.normal(-np.pi/2, +np.pi/2)
noise = np.random.normal(0, 1, N)
nbr = np.linspace(0,1,N)
func = 0.01*noise+np.sin(nbr/0.1+phase)
plt.plot(nbr,func,label='Line1',color='r')
plt.ylabel('Sinus')
plt.xlabel('Range')
plt.grid(True)
self.fig1 = plt.gcf()
return self.fig1
def on_pre_enter(self, *args):
self.fig1 = SecondPage.add_plot(self,1000)
self.box.add_widget(FigureCanvasKivyAgg(self.fig1))
def Update(self):
self.box.remove_widget(FigureCanvasKivyAgg(self.fig1))
self.fig1 = SecondPage.add_plot(self,1000)
self.box.add_widget(FigureCanvasKivyAgg(self.fig1))
class Manager(ScreenManager):
pass
class MyNewApp(App):
title = "Matplolib - plot Update"
def build(self):
return Manager()
MyNewApp().run()
Thank you !
One method that does work which is a relatively easy fix: if you clear all the child widgets with self.box.clear_widgets() instead of specifying the widget, then call plt.cla() to remove your previous data from the plot, should do what you're after.
Edited code below:
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.widget import Widget
from kivy.properties import ObjectProperty
from kivy.garden.matplotlib.backend_kivyagg import FigureCanvasKivyAgg
import matplotlib.pyplot as plt
import numpy as np
## Here for providing colour to the background
from kivy.core.window import Window
## Setting the window size
Window.clearcolor = (1, 1, 1, 1) # White background
Window.size = (960, 540)
kv = """
#:import SlideTransition kivy.uix.screenmanager.SlideTransition
<Manager>:
transition: SlideTransition()
StartPage:
name: 'StartPage'
SecondPage:
name: 'SecondPage'
<StartPage>:
canvas:
Color:
rgba: 0.1, 0.1, 1, 0.7
Rectangle:
pos: 0, 11*root.height/12
size: root.width, root.height/12
Rectangle:
pos: 0, 0
size: root.width, root.height/12
BoxLayout:
orientation: 'vertical'
size: root.width, root.height
Button:
size_hint: 0.15, 0.08
pos_hint: {'left': 0, 'top': 1 }
text: 'Go to Second Page'
on_release:
root.manager.current = 'SecondPage'
Button:
size_hint: 0.15, 0.08
pos_hint: {'right': 1, 'bottom': 1 }
text: 'Quit'
on_release: app.stop()
Label:
text: 'Start Screen'
font_size: '20sp'
color: 0,0,0,1
pos_hint:{'x': 0.42, 'y': 0.46 }
<SecondPage>:
box: box
canvas.before:
Color:
rgba: 1, 1, 1, 1
Rectangle:
pos: self.pos
size: self.size
BoxLayout:
id: box
size_hint: 0.8, 0.75
pos_hint:{'x': 0, 'y': 0.1 }
Button:
text:'Start Menu'
font_size: 20
bold: True
size_hint: 0.15, 0.08
pos_hint: {'left': 0, 'top': 1 }
color: 1, 1, 1, 1
on_press: root.manager.current = 'StartPage'
Button:
text:'Update'
font_size: 20
bold: True
size_hint: 0.15, 0.08
pos_hint: {'x':0.8, 'y': 0.5 }
color: 1, 1, 1, 1
on_press: root.Update()
"""
Builder.load_string(kv)
# Start Page
class StartPage(Screen):
pass
#Second Page
class SecondPage(Screen):
box = ObjectProperty(None)
def add_plot(self, N):
phase = np.random.normal(-np.pi/2, +np.pi/2)
noise = np.random.normal(0, 1, N)
nbr = np.linspace(0,1,N)
func = 0.01*noise+np.sin(nbr/0.1+phase)
plt.plot(nbr,func,label='Line1',color='r')
plt.ylabel('Sinus')
plt.xlabel('Range')
plt.grid(True)
self.fig1 = plt.gcf()
return self.fig1
def on_pre_enter(self, *args):
self.fig1 = SecondPage.add_plot(self,1000)
self.box.add_widget(FigureCanvasKivyAgg(self.fig1))
def Update(self):
#self.box.remove_widget(FigureCanvasKivyAgg(self.fig1))
plt.cla()
self.box.clear_widgets()
self.fig1 = SecondPage.add_plot(self,1000)
self.box.add_widget(FigureCanvasKivyAgg(self.fig1))
class Manager(ScreenManager):
pass
class MyNewApp(App):
title = "Matplolib - plot Update"
def build(self):
return Manager()
MyNewApp().run()
I've some problems with multiple MDLabels in BoxLayout (that is contains by AnchorLayout), so all the MDLabel objects are stacked in one place on the screen!
I dont know how to make them centered and grouped like a list (with spacing and e.g.)
Please, help me with solving that problem!
Thanks a lot and sorry for bad english.
There is my main.py
from kivy.app import App
from kivymd.theming import ThemeManager
from kivymd.label import MDLabel
from kivy.uix.screenmanager import Screen
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.anchorlayout import AnchorLayout
from kivy.metrics import dp, sp, pt
def toast(text):
from kivymd.toast.kivytoast import toast
toast(text)
class MyScreen(Screen):
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.menu_items = [
{
"viewclass": "MDMenuItem",
"text": "text%d" % i,
"callback": self.callback,
}
for i in range(1, 3)
]
self.menu_button = None
def change_variable(self, value):
print("\nvalue=", value)
self.VARIABLE = value
print("\tself.VARIABLE=", self.VARIABLE)
def callback(self, *args):
toast(args[0])
class MainApp(App):
title = "KivyMD MDDropdownMenu Demo"
theme_cls = ThemeManager()
def build(self):
return MyScreen()
if __name__ == "__main__":
MainApp().run()
And there is my main.kv file contains:
#:import MDDropdownMenu kivymd.menus.MDDropdownMenu
#:import MDRaisedButton kivymd.button.MDRaisedButton
#:import MDLabel kivymd.label.MDLabel
<MDMenuItem>:
on_release:
app.root.change_variable(self.text)
app.root.menu_button.text = self.text
<MyScreen>:
name: 'myscrn'
AnchorLayout:
anchor_y: 'center'
BoxLayout:
orientation: 'vertical'
size_hint: 0.1, 0.5
pos_hint: {'center_x': 0.5, 'center_y': 0.5}
spacing: dp(10)
MDRaisedButton:
id: mainbutton
size_hint: None, None
size: 3 * dp(48), dp(48)
text: 'MDButton1'
pos_hint: {'center_x': 0.5, 'center_y': 0.5}
opposite_colors: True
on_release:
root.menu_button = mainbutton
MDDropdownMenu(items=root.menu_items, width_mult=4).open(self)
MDRaisedButton:
id: secondbutton
size_hint: None, None
size: 3 * dp(48), dp(48)
text: 'MDButton2'
pos_hint: {'center_x': 0.5, 'center_y': 0.5}
opposite_colors: True
on_release:
root.menu_button = secondbutton
MDDropdownMenu(items=root.menu_items, width_mult=4).open(self)
AnchorLayout:
anchor_y: 'top'
BoxLayout:
orientation: 'vertical'
size_hint: 0.95, 0.5
padding: [0, 0, 0, 0]
spacing: dp(5)
pos_hint: {'center_x': 0.5, 'center_y': 0.5}
MDLabel:
font_size: dp(12)
text: '123'
MDLabel:
font_size: dp(22)
text: '456'
Woops, looks like a simple mistake. Your indentation on KV Lang is incorrect. You didn't nest your labels into BoxLayout correctly.
AnchorLayout:
anchor_y: 'top'
BoxLayout:
orientation: 'vertical'
size_hint: 0.95, 0.5
padding: [0, 0, 0, 0]
spacing: dp(5)
pos_hint: {'center_x': 0.5, 'center_y': 0.5}
MDLabel:
font_size: dp(12)
text: '123'
MDLabel:
font_size: dp(22)
text: '456'"""