I have this code below. I've set id by python code, but I couldn't access.
def abrirReceita(self,instance):
instance.text = str(instance.ids)
I'd like to change the text with the number of the ID when I press.
Exemple: if I input the first button, change the text for '1', which is the ID I've passed.
from kivymd.app import MDApp
from kivymd.uix.boxlayout import BoxLayout
from kivymd.uix.floatlayout import FloatLayout
from kivymd.uix.list import TwoLineListItem
from kivymd.uix.textfield import MDTextField
from kivy.lang import Builder
import os
from kivy.core.window import Window
import sqlite3
KV = '''
ScreenManager:
Screen:
name: 'telaSelecionada'
BoxLayout:
orientation: 'vertical'
MDToolbar:
id: tb
title: 'Drinks'
md_bg_color: 0, 0, 0, 1
TelaSelecionada:
id: telaselecionada
<TelaSelecionada>:
ScrollView:
MDList:
id: mostraReceita
padding: '20dp'
'''
Window.softinput_mode = "below_target"
class TelaSelecionada(FloatLayout):
pass
class Aplicativo(MDApp):
def build(self):
return Builder.load_string(KV)
def on_start(self):
i = 1
for x in range(5):
self.textLine = TwoLineListItem(text = 'change text', secondary_text = 'change text')
self.root.ids.telaselecionada.ids.mostraReceita.add_widget(self.textLine)
self.root.ids.telaselecionada.ids.mostraReceita.ids[i] = self.textLine
self.textLine.bind(on_release = self.abrirReceita)
i += 1
def abrirReceita(self,instance):
instance.text = str(instance.ids)
Aplicativo().run()
How do I access the IDs from python code?
I'd like to change the text with the number of the ID when I press.
Just pass the required args through method abrirReceita using functools.partial as,
def on_start(self):
...
self.textLine.bind(on_release = partial(self.abrirReceita, i))
i += 1
# Then in `abrirReceita` :
def abrirReceita(self, id_index, instance):
instance.text = str(id_index)
Note:
The ids are not used here at all (actually you don't need that here for this purpose) !
Update:
As, the Widget.id has been deprecated since version 2.0.0 you should use it only in kvlang not in python.
But that doesn't keep you from creating it as a dynamically added attribute. Thus you can do something like this (I modified the on_start method a little):
def on_start(self):
mostraReceita = self.root.ids.telaselecionada.ids.mostraReceita
for i, _ in enumerate(range(5), start=1):
# Or just,
# for i in range(1, 5+1):
self.textLine = TwoLineListItem(
text = 'change text',
secondary_text = 'change text',
)
self.textLine.index = i
# Or even,
# self.textLine.id = i
self.textLine.bind(on_release = self.abrirReceita)
mostraReceita.add_widget(self.textLine)
def abrirReceita(self,instance):
instance.text = str(instance.index) # or, str(instance.id)
Related
My program parses the site at the click of a button and displays the text of the book on the user's screen. But since I'm a beginner, I can't find the ScrollView argument that would repaint it in the color I want. Maybe I'm doing something wrong, I would be glad if someone could tell me how to display the text on the screen ScrollView, which is not black!
from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.label import Label
from kivy.uix.boxlayout import BoxLayout
from bs4 import BeautifulSoup
from kivy.uix.scrollview import ScrollView
import requests
class MyButton(Button):
color = (0, 0, 0, 1)
valign = 'bottom'
padding_y = 10
background_color = (.93, .91, .67, 1)
background_normal = ''
class Box(BoxLayout):
orientation = "vertical"
padding = [5,5,5,5]
spacing = 10
def on_kv_post(self, widget):
self.add_widget(MyButton(text='И. С. Тургенев. «Отцы и дети»', on_press=self.btn_press))
def btn_press(self, instance):
self.clear_widgets()
sc = ScrollView()
x = 1
data = ''
while True:
if x == 1:
url = "http://loveread.ec/read_book.php?id=12021&p=1"
elif x < 4:
url = "http://loveread.ec/read_book.php?id=12021&p=" + f'{x}'
else:
break
request = requests.get(url)
soup = BeautifulSoup(request.text, "html.parser")
teme = soup.find_all("p", class_="MsoNormal")
for temes in teme:
data += temes.text
x = x + 1
sc.add_widget(Label(text=f'{data}',color = (1,1,1,1)))
self.add_widget(sc)
class MyApp(App):
def build(self):
return Box()
if __name__ == "__main__":
MyApp().run()
You need your Label to adjust according to its text. The easiest way to do that is by using the kivy language. Here is one way to do it:
Add a new class MyLabel:
class MyLabel(Label):
pass
Use the new class in your python:
sc.add_widget(MyLabel(text=f'{data}',color = (1,1,1,1)))
Add use the kivy language to define the new class:
class MyApp(App):
def build(self):
Builder.load_string('''
<MyLabel>:
size_hint: 1, None
text_size: self.width, None
height: self.texture_size[1]
''')
return Box()
output KivyMD Programmers, im new in KivyMD....
on_start() list items are sucessfully showing and on_press sending a selected value too passValue() function....
but here now i wants open new Screen under passValue() function...and pass variable value's to new Screen....
from kivymd.app import MDApp
from kivy.uix.screenmanager import Screen,ScreenManager
from kivy.lang import Builder
from kivymd.uix.list import OneLineListItem
#Builder String
helper_string = '''
ScreenManager:
Hello:
Bye:
<Hello>:
name: 'hello'
ScrollView:
MDList:
id: list
<Bye>:
name: 'bye'
MDLabel:
text:'Good Bye'
MDLabel:
id:'aaa'
text:""
'''
class Hello(Screen):
pass
class Bye(Screen):
pass
sm = ScreenManager()
sm.add_widget(Hello(name = 'hello'))
sm.add_widget(Bye(name = 'bye'))
class DemoApp(MDApp):
def build(self):
screen = Screen()
self.help_str = Builder.load_string(helper_string)
screen.add_widget(self.help_str)
return screen
def on_start(self):
for i in range(50):
item = OneLineListItem(text='Item ' + str(i),
on_release=lambda x, value_for_pass={i}: self.passValue(value_for_pass)
)
self.help_str.get_screen('hello').ids.list.add_widget(item)
def passValue(self, *args):
args_str = ','.join(map(str,args))
print(args_str)
self.help_str.get_screen('bye').manager.current = 'bye' #how to pass/send args_str's value to bye screen???
DemoApp().run()
Since It's not clear exactly where in your screen Bye you want some variable to be passed, let's suppose you want to pass a list's text to the MDLabel having text 'Good Bye' of the screen Bye by method passValue.
You may achieve this as follows:
First in the kvlang of screen Bye assign an id say, target to the MDLabel,
<Bye>:
name: 'bye'
MDLabel:
id: target
text:'Good Bye'
Then in your method passValue,
def passValue(self, *args):
args_str = ','.join(map(str,args))
print(args_str)
bye_screen = self.help_str.get_screen('bye')
bye_screen.manager.current = 'bye'
bye_screen.ids.target.text = args_str
As a side note you perhaps don't need (as you already defined that in kvlang) the following:
sm = ScreenManager()
sm.add_widget(Hello(name = 'hello'))
sm.add_widget(Bye(name = 'bye'))
As a test, I prepared the following code,
Firstly, I set the button text from two function names add_front and add_back
Then, I get the function handle from the name and make a partial function to bind it to Buttons.
Though the binding seems ok, the results are random.
Anybody can help me out?
"""
#author:
#file:test-bind.py
#time:2022/01/3111:42
#file_desc
"""
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import ObjectProperty
from kivy.clock import Clock
import random
from functools import partial
Builder.load_string("""
<MButton#Button>:
_cb:[]
<TestWin>:
inp1:inp1_
lbl1:lbl1_
btn1:btn1_
btn2:btn2_
orientation: 'vertical'
BoxLayout:
orientation:'horizontal'
TextInput:
id:inp1_
readonly: True
Label:
id:lbl1_
MButton:
id:btn1_
text: 'add_front'
MButton:
id:btn2_
text: 'add_back'
Button:
id:btn_cls_
text:'clear'
on_press:root.clear_elements()
Button:
id:btn_shuffle_
text:'Shuffle'
on_press:root.shuffle_btn()
TextInput:
multiline: True
text:'Usage: press <Shuffle> to randomize button function and set a random number in [0,9], press <add_front> or <add_back> buttons to insert to list'
""")
class Box:
def __init__(self):
self.elements =[]
def add(self,e,front=False):
if front:
self.elements.insert(0,e)
else:
self.elements.append(e)
def add_front(self,e):
print("add_front",e)
self.add(e,front=True)
def add_back(self,e):
print("add_back",e)
self.add(e,front=False)
class TestWin(BoxLayout):
inp1 = ObjectProperty()
lbl1 = ObjectProperty()
btn1 = ObjectProperty()
btn2 = ObjectProperty()
btn_bind = ObjectProperty()
def __init__(self, **kwargs):
super(TestWin, self).__init__(**kwargs)
self.box = Box()
Clock.schedule_interval(self.update_elements_display, 0.5)
def update_elements_display(self,*args):
self.lbl1.text = "%s"%str(self.box.elements)
pass
def clear_elements(self):
self.box.elements=[]
def shuffle_btn(self):
btn_txt_ = ["add_front", "add_back"]
random.shuffle(btn_txt_)
self.btn1.text = btn_txt_[0]
self.btn2.text = btn_txt_[1]
v = random.randint(0,9)
self.inp1.text= "%d"%v
# bind func
for btn in [self.btn1,self.btn2]:
# clear old bind firstly
for cb in btn._cb:
btn.funbind("on_press",cb)
btn._cb = []
# The following codes give wrong result
#foo_ = getattr(self.box, btn.text)
#foo = lambda elem, instance: foo_(elem)
#call_back_ = partial(foo, self.inp1.text)
# The following codes give correct result
if btn.text=="add_back":
call_back_ = partial(self.box.add_back, self.inp1.text)
elif btn.text =="add_front":
call_back_ = partial(self.box.add_front, self.inp1.text)
btn._cb.append(call_back_)
btn.fbind('on_press',call_back_)
print("bind to",call_back_)
class TestApp(App):
def build(self):
return TestWin()
if __name__ == '__main__':
TestApp().run()
Edit:
Modifying the following codes may give me correct result,
but I wonder why
# The following codes give wrong result
#foo_ = getattr(self.box, btn.text)
#foo = lambda elem, instance: foo_(elem)
#call_back_ = partial(foo, self.inp1.text)
# The following codes give correct result
if btn.text=="add_back":
call_back_ = partial(self.box.add_back, self.inp1.text)
elif btn.text =="add_front":
call_back_ = partial(self.box.add_front, self.inp1.text)
# The following doesn't work
# foo_ = getattr(self.box, btn.text)
# foo = lambda elem, instance: foo_(elem)
# call_back_ = partial(foo, self.inp1.text)
#this is ok
call_back_ = partial(getattr(self.box, btn.text), self.inp1.text)
I am trying to make a program that reads the dictionary after the user inputs their name and assigns a random selection based on weighted values in the dictionary. As of now the logic for selecting a random value from the dictionary is working but I have it printing to the console. I would like it to appear in a popup window (which i have but cannot get the output variable to show up there)
four.kv
WindowManager:
MainWindow:
<MainWindow>:
name:'main'
player_python:player_kv
GridLayout:
cols:1
GridLayout:
cols:2
Label:
text:'Player:'
TextInput:
id: player_kv
multiline: False
Button:
text: 'Random'
on_press: root.btn()
<P>:
output:output
FloatLayout:
Label:
id: output
main4.py
import kivy
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.uix.widget import Widget
from kivy.properties import ObjectProperty
from kivy.uix.label import Label
from kivy.uix.popup import Popup
from kivy.uix.floatlayout import FloatLayout
from kivy.properties import StringProperty
import random
#from Dict import *
#### example dictionary
character = {
'John':
{'Water': 2, #50%
'Fire': 1, #25%
'Earth': 1,}, #25%
'Bill':
{'Water': 1, #25%
'Fire': 2, #50%
'Earth': 1,}} #25%
####
class MainWindow(Screen):
player_python = ObjectProperty(None)
output = StringProperty('')
def btn(self):
show_popup()
player = self.player_python.text
weighted_list = []
for c in character[player]:
for w in range(character[player][c]):
weighted_list.append(c)
self.output= random.choice(weighted_list)
print(self.output) ###### instead of this printing to console I want it to display in popup window
self.player_python.text = ''
class P(FloatLayout):
pass
def show_popup():
show = P()
popupWindow = Popup(title='random character', content=show, size_hint=(None,None),size=(400,400) )
popupWindow.open()
class WindowManager(ScreenManager):
pass
kv = Builder.load_file('four.kv')
class FourApp(App):
def build(self):
return kv
if __name__ == '__main__':
FourApp().run()
https://gist.github.com/PatrickToole/00cc72cdd7ff5146976e5d92baad8e02
Thanks in advance
-P
I haven't tested this code, but try passing self.output to your show_popup() method. This would mean changing your btn() method to something like:
def btn(self):
player = self.player_python.text
weighted_list = []
for c in character[player]:
for w in range(character[player][c]):
weighted_list.append(c)
self.output= random.choice(weighted_list)
print(self.output) ###### instead of this printing to console I want it to display in popup window
self.player_python.text = ''
show_popup(self.output)
And in the show_popup() method:
def show_popup(output):
show = P()
show.output.text = output
popupWindow = Popup(title='random character', content=show, size_hint=(None,None),size=(400,400) )
popupWindow.open()
As I mentioned, I haven't tested this code, but something like this should work.
I am trying to update a label field dynamically from the contents of a TextInput in a ModalView. The idea is that in the TextInput one enters plain text including markup formatting and you will see the results directly in the Label field with markup = True.
Unfortunately I do not know how to access the Label item in the ModalView. Who can help? See the example code below.
Thanks in advance.
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.modalview import ModalView
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.textinput import TextInput
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.properties import ObjectProperty, StringProperty
kv = """
<Test>:
canvas:
Color:
rgba: 0.4, 0.5, 0.6, 1
Rectangle:
size: self.size
pos: self.pos
Button:
size_hint: None, None
size: 3 * dp(48), dp(48)
text: 'Edit'
on_press: root.showedit()
"""
Builder.load_string(kv)
class Test(BoxLayout):
minput_text = StringProperty('Welcome')
txtresult = ObjectProperty()
def showedit(self):
mview = ModalView(id='mviewid', size_hint=(0.4, 0.6), auto_dismiss=False, background='./images/noimage.png')
mblt = BoxLayout(orientation='vertical', padding=(24))
minp = TextInput(id='inptxt', text='', hint_text='Start typing text with markup here', size_hint=(1,0.5),multiline=True)
minp.bind(text=self.on_inptext)
mtxt = Label(id='txtresult',text='displays formatted text', color=(0.3,0.3,0.3), size_hint=(1,0.5),markup=True)
mcnf = Button(text='OK', size=(144,48), size_hint=(None,None))
mcnf.bind(on_press=mview.dismiss)
mblt.add_widget(minp)
mblt.add_widget(mtxt)
mblt.add_widget(mcnf)
mview.add_widget(mblt)
mview.bind(on_dismiss=self.print_text)
mview.open()
def on_inptext(self, instance, value):
self.minput_text = value
def print_text(self, *args):
print self.minput_text
class TestApp(App):
def build(self):
return Test()
if __name__ == '__main__':
TestApp().run()
You have to make a binding between the TextIntput text and the Label, for this we can use a lambda function and setattr.
class Test(BoxLayout):
minput_text = StringProperty('Welcome')
txtresult = ObjectProperty()
def showedit(self):
mview = ModalView(id='mviewid', size_hint=(0.4, 0.6), auto_dismiss=False, background='./images/noimage.png')
mblt = BoxLayout(orientation='vertical', padding=(24))
minp = TextInput(id='inptxt', text='', hint_text='Start typing text with markup here', size_hint=(1,0.5),multiline=True)
minp.bind(text=self.on_inptext)
mtxt = Label(id='txtresult',text='displays formatted text', color=(0.3,0.3,0.3), size_hint=(1,0.5),markup=True)
mcnf = Button(text='OK', size=(144,48), size_hint=(None,None))
mcnf.bind(on_press=mview.dismiss)
mblt.add_widget(minp)
mblt.add_widget(mtxt)
mblt.add_widget(mcnf)
mview.add_widget(mblt)
mview.bind(on_dismiss=self.print_text)
# binding between TextInput text and Label text
minp.bind(text=lambda instance, value: setattr(mtxt, 'text',value))
mview.open()
def on_inptext(self, instance, value):
self.minput_text = value
def print_text(self, *args):
print(self.minput_text)