I'm trying to output text from button presses and add it to a textbox each time it's pressed as well as delete the text when the delete button is pressed - in normal python.
I've been trying to use kivy.uix.textinput, but I'm not sure on how to output the value from the buttons as well as delete it.
This is what I've done so far.
from kivy.app import App
from kivy.uix.screenmanager import Screen
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.gridlayout import GridLayout
from kivy.uix.textinput import TextInput
class CodeScreen(Screen):
def __init__(self):
super(CodeScreen, self).__init__(name='code_screen')
main_grid_lay = GridLayout(cols=2,cols_minimum={0:640, 1:175})
self.add_widget(main_grid_lay)
#Code ouput display
display_code = TextInput(text='Code!', readonly = True, id=output)
main_grid_lay.add_widget(display_code)
#Options Buttons
box_lay = BoxLayout(orientation='vertical')
main_grid_lay.add_widget(box_lay)
delete_button = Button(
text='Delete',
size_hint_x= None,
width=160,
id='' #unsure on how to delete
)
box_lay.add_widget(delete_button)
base_left = Button(
text='Base Left',
#on_release= b_left(),
#id='left',
)
base_right = Button(
text='Base Right',
on_release=self.degree_popup,
#on_release= b_right(),
)
#b_left = self.ids.output.text='left'
#b_left = self.ids.output.text='right'
box_lay.add_widget(base_left)
box_lay.add_widget(base_right)
# The app class
class MyMain(App):
def build(self):
return CodeScreen()
# Runs the App
if __name__ == '__main__':
MyMain().run()
It currently sends an error and is probably because of the ids. Not fully sure how ids work without using kv language. Any help is appreciated.
The id only makes sense in .kv, in python they are useless. In this case the solution is to access the objects in the methods connected to on_release but for this they must be class attributes.
from kivy.app import App
from kivy.uix.screenmanager import Screen
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.gridlayout import GridLayout
from kivy.uix.textinput import TextInput
class CodeScreen(Screen):
def __init__(self):
super(CodeScreen, self).__init__(name="code_screen")
self.display_code = TextInput(text="Code!", readonly=True)
self.delete_button = Button(
text="Delete", size_hint_x=None, width=160, on_release=self.delete_clicked
)
self.base_left = Button(text="Base Left", on_release=self.left_clicked)
self.base_right = Button(text="Base Right", on_release=self.right_clicked)
main_grid_lay = GridLayout(cols=2, cols_minimum={0: 640, 1: 175})
main_grid_lay.add_widget(self.display_code)
self.add_widget(main_grid_lay)
box_lay = BoxLayout(orientation="vertical")
box_lay.add_widget(self.delete_button)
main_grid_lay.add_widget(box_lay)
box_lay.add_widget(self.base_left)
box_lay.add_widget(self.base_right)
def delete_clicked(self, instance):
self.display_code.text = ""
def left_clicked(self, instance):
self.display_code.text += "left"
def right_clicked(self, instance):
self.display_code.text += "right"
# The app class
class MyMain(App):
def build(self):
return CodeScreen()
# Runs the App
if __name__ == "__main__":
MyMain().run()
Related
I am making a project involving looking up images. I decided to use kivy, creating a system where you can input a name of a folder (located in a specific directory) into a search bar, and it will return all images inside said folder tagged '.jpg'. I am stuck with updating the window to display these images, and I can't find anything online which helps.
from kivy.properties import StringProperty, ObjectProperty
from kivy.uix.screenmanager import Screen
from kivymd.app import MDApp
from kivy.uix.textinput import TextInput
from kivy.uix.button import Button
from kivy.uix.gridlayout import GridLayout
from kivy.uix.widget import Widget
from kivy.uix.image import Image
from kivy.core.window import Window
import glob
import os
os.chdir(r'directory/of/imagefolders')
class functions:
def lookup(name):
root = f'imagefolder'
for root, subdirs, files in os.walk(f'imagefolder'):
for d in subdirs:
if d == name:
print(d)
path = f'imagefolder/'+d
print(path)
return path
def load_images(f):
facefile = []
for images in glob.glob(f + '\*.jpg'):
facefile.append(images)
print(facefile)
return facefile
class MainApp(MDApp):
def build(self):
Window.clearcolor = (1,1,1,1)
layout = GridLayout(cols=2, row_force_default=True, row_default_height=40,
spacing=10, padding=20)
self.val = TextInput(text="Enter name")
submit = Button(text='Submit', on_press=self.submit)
layout.add_widget(self.val)
layout.add_widget(submit)
return layout
def submit(self,obj):
print(self.val.text)
layout2 = GridLayout(cols=2, row_force_default=True, row_default_height=40,
spacing=10, padding=20)
name = self.val.text
f = functions.lookup(name)
print(f)
facefile = functions.load_images(f)
x = len(facefile)
print(x)
for i in range(0, x):
print(facefile[i])
self.img = Image(source=facefile[i])
self.img.size_hint_x = 1
self.img.size_hint_y = 1
self.img.pos = (200,100)
self.img.opacity = 1
layout2.add_widget(self.img)
return layout2
MainApp().run()
This is what I tried, but the window doesn't update. All images are returned (demonstrated by print(facefile[i])), but nothing happens with them. Any help would be massively appreciated
Your submit() method is creating Image widgets and adding them to a newly created layout2, You are returning that new layout2 from that method, but that does not add it to your GUI. Try replacing:
layout2.add_widget(self.img)
with:
self.root.add_widget(self.img)
I am using kivy and I am using Windows 10, Python 3.7.
I want to print out the name of each button when I press each button.
However, only the name of the last button is printed.
Below is the Python code
import kivy
kivy.require('2.0.0')
from kivy.app import App
from kivy.core.window import Window
from kivy.uix.gridlayout import GridLayout
from kivy.uix.button import Button
from kivy.uix.scrollview import ScrollView
import os
Window.clearcolor = (.6, 1, .8, 1)
Window.size = (563, 1001)
Window.top, Window.left = 30, 800
path_list = ["music1","music2","music3"]
music = ""
class TestApp(App):
def build(self):
global music
gl = GridLayout(cols=1, size_hint_y=None)
for music in path_list:
bt = Button(text=music, size_hint_y=None, height=50)
gl.add_widget(bt)
bt.bind(on_press=self.music_f)
sv = ScrollView(size_hint=(1, 1))
sv.add_widget(gl)
return sv
def music_f(self,name):
global music
name = music
print("pray "+str(name))
TestApp().run()
Bad design:
You use a music variable which will take the last value from the path_list due to the for loop, then you use that value to assign it to the name, this has no logic... Once the button is created with the text=music, you already have the value assign to the that button. As you bind on_press with music_f, the name should be the button, I would change that to button.
In music_f you can access the name by calling button.text
def music_f(self,button):
print("pray "+str(button.text))
from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.gridlayout import GridLayout
from kivy.uix.textinput import TextInput
from kivy.uix.button import Button
from kivy.uix.screenmanager import ScreenManager, Screen
import json
import re
class Grid(GridLayout):
def __init__(self, **kwargs):
super(Grid, self).__init__(**kwargs)
# Columns for the main view
self.cols = 1
# Start of the Inside
self.inside = GridLayout()
self.inside.rows = 3
self.inside.add_widget(Label(text = 'Enter the Brand Name for its Products: '))
self.brand_input = TextInput(multiline = False)
self.inside.add_widget(self.brand_input)
# Add the things in inside to the main
self.add_widget(self.inside)
self.submit = Button(text = 'Submit', font_size = 20)
self.submit.bind(on_press = self.pressed)
self.add_widget(self.submit)
def pressed(self, instance):
# Pull the text inside the textInput
brand_name = self.brand_input.text
with open('mcg_app/brands.json', 'r') as f:
brands_dict = json.load(f)
request = brands_dict[brand_name]
modified_result = re.sub(r',\s(?![^(]*\))', "\n", str(request))
self.inside.add_widget(Label(text = modified_result))
# Clear out the fields after submitting
self.brand_input.text = ''
class Mcg(App):
def build(self):
return Grid()
if __name__ == '__main__':
Mcg().run()
Hello, this program here has a text input box and the user inputs a brand name for example "Dove" after that he presses the submit button, and the button is connected to the pressed() function. Everything about the program is actually working fine the only problem is after I print the products of the entered brand let's say he inputs a different brand in that case the old output is still there so the program outputs new products with the old ones already there. How can I fix this? Thanks in advance
I can't really test it without a json data file, but check out this:
from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.gridlayout import GridLayout
from kivy.uix.textinput import TextInput
from kivy.uix.button import Button
import json
import re
class Grid(GridLayout):
def __init__(self, **kwargs):
super(Grid, self).__init__(**kwargs)
# Columns for the main view
self.cols = 1
# Start of the Inside
self.inside = GridLayout()
self.inside.rows = 3
self.inside.add_widget(Label(text='Enter the Brand Name for its Products: '))
self.brand_input = TextInput(multiline=False)
self.inside.add_widget(self.brand_input)
# Add the things in inside to the main
self.add_widget(self.inside)
self.submit = Button(text='Submit', font_size=20)
self.submit.bind(on_press=self.pressed)
self.add_widget(self.submit)
def pressed(self, instance):
# Clear out the fields after submitting
self.brand_input.text = ''
self.inside.clear_widgets()
self.inside.add_widget(Label(text='Enter the Brand Name for its Products: '))
self.inside.add_widget(self.brand_input)
# Pull the text inside the textInput
brand_name = self.brand_input.text
with open('mcg_app/brands.json', 'r') as f:
brands_dict = json.load(f)
request = brands_dict[brand_name]
modified_result = re.sub(r',\s(?![^(]*\))', "\n", str(request))
self.inside.add_widget(Label(text=modified_result))
class Mcg(App):
def build(self):
return Grid()
if __name__ == '__main__':
Mcg().run()
It resets the self.inside GridLayout on every button press...
Using Kivy 1.10.0 with Python 2.7.9 I am trying to get the TextInput value entered by user when Button (my_button2) is clicked .And although I have been able to get this working with GridLayout it seems like the method I am using is not working with ScreenManager with BoxLayout . Error received is : AttributeError: 'ScreenTwo' object has no attribute 'inpt' when my_button2
After clicking 'Next Screen ' button , it takes me to page where user enters text value , and 'print' button should print it
Please see below :
import kivy
from kivy.app import App
from kivy.uix.screenmanager import Screen, ScreenManager
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.button import Button
from kivy.uix.textinput import TextInput
class ScreenOne(Screen):
def __init__ (self,**kwargs):
super (ScreenOne, self).__init__(**kwargs)
my_box1 = BoxLayout(orientation='vertical')
my_button1 = Button(text="Next Screen ",size_hint_y=None,size_y=100)
my_button1.bind(on_press=self.changer)
my_box1.add_widget(my_button1)
self.add_widget(my_box1)
def changer(self,*args):
self.manager.current = 'screen2'
class ScreenTwo(Screen):
def __init__(self,**kwargs):
super (ScreenTwo,self).__init__(**kwargs)
layout = BoxLayout(orientation='vertical')
self.add_widget(layout)
inpt = TextInput(text="Some text ",size_y=50)
layout.add_widget(inpt)
my_button2 = Button(text="Print ")
my_button2.bind(on_press=self.click)
layout.add_widget(my_button2)
Home_btn = Button(text="Back")
Home_btn.bind(on_press=self.home)
layout.add_widget(Home_btn)
def click(self,my_button2):
entered_value = self.inpt.text
print entered_value
def home(self,*args):
self.manager.current = 'screen1'
class TestApp(App):
def build(self):
my_screenmanager = ScreenManager()
screen1 = ScreenOne(name='screen1')
screen2 = ScreenTwo(name='screen2')
my_screenmanager.add_widget(screen1)
my_screenmanager.add_widget(screen2)
return my_screenmanager
if __name__ == '__main__':
TestApp().run()
second screen
When you use self you are trying to access members of the class, but in your case inpt it is not since it is a variable any, if you want to be a member of the class you must put forward self, in your case change:
inpt = TextInput(text="Some text ",size_y=50)
layout.add_widget(inpt)
to:
self.inpt = TextInput(text="Some text ",size_y=50)
layout.add_widget(self.inpt)
Note: I recommend you read OOP basics, if you are not going to have many of these problems.
I want to create an Accordion containing content consisting of an RstDocument and a button. The Accordion shall be scrollable as well as the content of the RstDocument when this content is larger than the given space. So I came up with the following code but after some clicks on AccordionItems all further interaction is blocking. What am I doing wrong here?
from kivy.app import App
from kivy.uix.scrollview import ScrollView
from kivy.uix.rst import RstDocument
from kivy.core.window import Window
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.accordion import Accordion, AccordionItem
from kivy.uix.button import Button
class ShowrstApp (App):
def update_size(self, instance, *args):
instance.size = 60 * len(instance.children)
def build (self):
numitems = 10
root = BoxLayout()
accheight = numitems * 60
accitems = Accordion(id='acc_panel', orientation='vertical', pos_hint={'top': 1}, size_hint_y=None,
height=accheight, md_bg_color=(1, 1, 1, 1))
for i in xrange(numitems):
item = AccordionItem(title='This is item: %d' % i)
somecontent = BoxLayout(orientation='vertical')
somecontent.add_widget(RstDocument(text='Some nicely formatted text here'))
somecontent.add_widget(Button(text='click here', height=(42), size_hint=(1,None)))
item.add_widget(somecontent)
item.bind(children=self.update_size)
accitems.add_widget(item)
sv = ScrollView(do_scroll_x = False)
sv.add_widget(accitems)
root.add_widget(sv)
return root
Window.size = (350,650)
showrst = ShowrstApp()
showrst.run()
Below the scrolling effect works when the RstDocument Boxlayout is either horizontal of vertical, but an issue I saw was that when the BoxLayout was set to vertical, the toggle of each item was mute, you had to go one by one from the bottom-up. This was weird. You can click on each AccordionItem, where the RstDocument is not. This should be a great starting point. Noticed this effect doesn't occur when using a Label, so that could be a another option.
from kivy.app import App
from kivy.uix.scrollview import ScrollView
from kivy.uix.rst import RstDocument
from kivy.core.window import Window
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.accordion import Accordion, AccordionItem
from kivy.uix.button import Button
class ShowrstApp (App):
def update_size(self, instance, *args):
instance.height = 100 * len(instance.children) # set Accordion height to the number of accordionItem times the height accordionItem height
def build (self):
numitems = 10
root = BoxLayout()
accheight = numitems * 60
accitems = Accordion(id='acc_panel', orientation='vertical', size_hint_y=None, pos_hint={'top':1}
height=accheight, md_bg_color=(1, 1, 1, 1))
for i in xrange(numitems * 2): # *2 to show it works
item = AccordionItem(title='This is item: %d' % i)
somecontent = BoxLayout(orientation = 'horizontal') # couldn't solve an issue I notice so I used horizontal
somecontent.add_widget(RstDocument(text='Some nicely formatted text here' * 10))
somecontent.add_widget(Button(text='click here', height=(42), size_hint=(1,None)))
item.add_widget(somecontent)
accitems.bind(size=self.update_size)
accitems.add_widget(item)
sv = ScrollView(do_scroll_x = False)
sv.add_widget(accitems)
root.add_widget(sv)
return root
Window.size = (350,650)
showrst = ShowrstApp()
showrst.run()
I was having the same issue with RstDocuments in a ScrollView. The problem arises because RstDocuments have their own scrolling and 'intercept' the scroll command because it thinks you're trying to scroll inside the RstDocument. If you're fine with non-scrolling RstDocuments, you can set do_scroll_y: False for RstDocument, and scrolling will then work fine in the ScrollView regardless of mousing over an RstDocument.