#user-interfaces | Python | Page 37

wet rune Jul 7, 2019, 9:08 PM

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Have a look at this: https://www.riverbankcomputing.com/static/Docs/PyQt5/

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I think there are also some helpful tutorials available on youtube.

digital rose Jul 7, 2019, 9:09 PM

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thanks!

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im lost

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📎 unknown.png

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i want when i press a button it opens up a dialog box to choose a pic

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and create a pixmap

wet rune Jul 7, 2019, 9:10 PM

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Do you want a message box?

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That is appearing when you press a button or something like that?

digital rose Jul 7, 2019, 9:10 PM

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Yeah

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do you get me? like when you change discord avatar

wet rune Jul 7, 2019, 9:11 PM

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A message box can be achieved with the QMessageBox Widget

digital rose Jul 7, 2019, 9:11 PM

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Ok

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I can do that in the designer

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i mean the functionality of clicking a button to open up a dialog box that selects an image

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how to do that?

wet rune Jul 7, 2019, 9:12 PM

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Shall I send you some simple code where you can press a button and then a message box appears?

digital rose Jul 7, 2019, 9:13 PM

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No thanks its okay

wet rune Jul 7, 2019, 9:13 PM

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Ok

digital rose Jul 7, 2019, 9:13 PM

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thanks for your help

wet rune Jul 7, 2019, 9:13 PM

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yeah, no problem

lethal widget Jul 8, 2019, 5:22 PM

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What is objectName for in PyQt5?

rocky dragon Jul 8, 2019, 5:56 PM

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Well it's the name of the object. It gets used in some warnings, tree dumps, finding it and stuff like that

lethal widget Jul 8, 2019, 6:53 PM

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Okay thank you!

mint lagoon Jul 9, 2019, 8:23 AM

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Hi, I would like to make a sorting algorithm visualization. Could someone recommend me any modules/frameworks to help me do that? I need something that can draw on screen, add buttons, sliders etc. I’ve looked into wxPython, PyOpenGL, Kivy, pygame.
But I’m not sure what would be the best for the task an beginner friendly.

digital rose Jul 9, 2019, 11:15 AM

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Is there a favourable alternative to input("[y/n]") ?

lethal widget Jul 9, 2019, 5:52 PM

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@mint lagoon Have you looked into PyQt?

mint lagoon Jul 9, 2019, 5:55 PM

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@lethal widget No i haven’t. Does it allow me to make something like a graph bar?

lethal widget Jul 9, 2019, 5:58 PM

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I just checked it

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You can have sliders and progress bars

📎 unknown.png

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📎 unknown.png

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📎 unknown.png

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I think this are all the widgets the library offer

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If you need anything else feel free to @ me, the library provides a designer which is quite good

lethal widget Jul 9, 2019, 6:31 PM

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Can anybody explain me what this means?

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QOpenGLWidget provides functionality for displaying OpenGL graphics integrated into a Qt application. It is very simple to use: Make your class inherit from it and use the subclass like any other QWidget , except that you have the choice between using QPainter and standard OpenGL rendering commands.

alpine blaze Jul 9, 2019, 8:31 PM

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Kivy is also an option, you can draw anything with it, it's directly based on opengl, and there are simple widgets, and you can build your own easily.

hollow summit Jul 9, 2019, 11:11 PM

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does anyone know if there are ways to implement global keybinds into pyqt5?

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like pressing Ctrl+L without the window being open would call a function for example

mint lagoon Jul 10, 2019, 5:01 AM

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Ok thanks guys, I’ll look into it

rocky dragon Jul 10, 2019, 9:22 AM

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@hollow summit you'll need some kind of keyboard hook for that

glad beacon Jul 11, 2019, 7:22 PM

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hi! can someone help me with kivy? i have 5 questions:

how do i change the transition to NoTransition in kv lang.
how do i create a label that i can actually "select" the text that it contains.
how can i do that a part of my screen, i can scroll it down and up.
how can i have more than 1 account login? Actually using app.root.current = "geral" if cargo.text == "a" and passw.text == "a" else "login" but what if i want to add another where cargo and passw are different..
how can i do something like it only shows/doesn't show something(label, buttons etc) if a var is true or false...

tribal path Jul 11, 2019, 7:37 PM

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only started looking into kivy again myself... 3. is a scrollview with size_hint_y=None. 4. i suppose you want a dict of user/password?

glad beacon Jul 11, 2019, 7:38 PM

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not exactly

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like the code i used above..

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it detects if the cargo.text and passw.text are something

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that would be a default user from the program

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but if i add another line like that

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it will "glitch"

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it will not work correctly

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and about 3. only that?

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about scrollview

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i found this

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        size_hint: (None, None)
        size: (400, 400)
        pos: 100, 100
        GridLayout:
            id: output
            cols: 1
            orientation: 'vertical'
            size_hint_y: None
            height: self.minimum_height```

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but how would i add like shapes and text to this?

tribal path Jul 11, 2019, 7:56 PM

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afaik you just add on whatever containers you're after. staggered like the view & layout there

glad beacon Jul 11, 2019, 7:57 PM

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= ? @tribal path

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what do you mean

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with that

tribal path Jul 11, 2019, 7:58 PM

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https://kivy.org/doc/stable/api-kivy.uix.scrollview.html

glad beacon Jul 11, 2019, 8:03 PM

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i saw that

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but didn't understand anything

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but it's ok

alpine blaze Jul 12, 2019, 12:16 AM

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@glad beacon 1/ you cant import kivy.uix.screenmanager.NoTransition in kv and assign an instance to the transition property of the. Screenmanager

2/ you can use a hidden textinput in readonly mode and show it when user touches the label, or you could just use a themed textinput to have an invisible background

3/ scrollview's child should be bigger than scrollview to scroll, so usually size_hint_y: None and height: self.minimum_height and make sure children have size_hint_y: None too and a set height

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5/ size 0, 0 and disabled and opacity 0 on condition

severe kraken Jul 12, 2019, 3:50 AM

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i have an issue with tkinter image that the image shows for a second the just shows the background of the canvas

def showImage(tid):
    iconsrc=(path + "\\cache\\" + tid + ".jpg")
    image = Image.open(iconsrc)
    image = image.resize((202, 202), Image.ANTIALIAS)
    icon = ImageTk.PhotoImage(image)
    canvas.create_image(1, 1, image=icon, anchor=NW)
    canvas.update()

it's getting called with

canvas.after(1000, showImage(value['id']))

what ever i set the first argument to is how long the image shows for some reason
but it also hangs the program
im pretty sure that's not the way after() is meant to work

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please @ me if you have any input thanks

severe kraken Jul 12, 2019, 4:29 AM

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fixed it by setting global icon within showImage

glad beacon Jul 12, 2019, 7:12 AM

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@alpine blaze and the 4. ? how would i do the same thing as the code above but 3 times? if i copy paste that code 3x it glitches.. and i am getting some issues with characters.. can you help me with that too?

glad beacon Jul 12, 2019, 8:55 AM

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📎 unknown.png

alpine blaze Jul 12, 2019, 4:30 PM

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i sometime do something like:

<MyWidget>:
    hidden: False
    size: (0, 0) if self.hidden else (0, 0)
    opacity: 0 if self.hidden else 1
    disabled: self.hidden

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For the text issue, it can happen if the kv is not loaded as utf8, you can use open(encoding='utf8') + load_string(file.read) instead of the automatic loading to avoid this issue

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4 is not related to kivy, use a function to check credentials, use any method of checking auth you want in that

glad beacon Jul 12, 2019, 9:17 PM

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is this normal when ctrl left clicking somewhere in my program?

📎 unknown.png

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how can i remove this "feature"?

storm latch Jul 13, 2019, 5:55 PM

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Yeah it's because Kivy is cross-platform. That is how you test touch-based interfaces.

tribal path Jul 13, 2019, 7:59 PM

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it there a preferred guide for kivy other than the docs? starting to port a tk app (that was itself ported from d.py/pil)

nova sun Jul 14, 2019, 6:15 PM

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anyone tried beeware as an alternative to kivy?

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with briefcase/toga

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if so what is your opinion on it?

alpine blaze Jul 14, 2019, 6:37 PM

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i didn't try it, and i'm biased as one contributor to kivy, but my impression is that it's very very early, and not as active as it should be if it want to catch up. They set themselves to a very ambitious task, and they have some impressive proof of concept, but it's really nowhere near production ready.

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it's not an alternative in the sense it has different objectives. Kivy means the app looks everywhere the same (unless you want to) and is not native looking (unless you make an insane amount of work for that), anywhere. Beeware wants to be native everywhere, but there are seldom widgets, and even less available on multiple platforms

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(because it's hard to define common interfaces to abstract widgets from very different platforms)

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@glad beacon i though i had answered to that, sorry, it's the multitouch simulation, you can disable it https://kivy.org/doc/stable/api-kivy.input.providers.mouse.html#using-multitouch-interaction-with-the-mouse

glad beacon Jul 14, 2019, 6:43 PM

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you did

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i asked here and on the kivy discord

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you answered that on kivy discord

alpine blaze Jul 14, 2019, 6:43 PM

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ah ok

glad beacon Jul 14, 2019, 6:43 PM

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xd

alpine blaze Jul 14, 2019, 6:43 PM

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yeah, i was wondering if it was another case of crazyness on my side

glad beacon Jul 14, 2019, 6:44 PM

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lol

alpine blaze Jul 14, 2019, 6:44 PM

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@tribal path there are some tutorials on youtube, i didn't see any particular good written documentation aside our doc

jolly turret Jul 14, 2019, 6:44 PM

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Kivy looks like a really great project. I am very new to UI with Python, does anyone have some great samples of apps built with kivy so I can see it's capabilities?

alpine blaze Jul 14, 2019, 6:45 PM

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oh my, let me entertain you 😃

glad beacon Jul 14, 2019, 6:45 PM

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well i can send you my current project

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will send you some pics on your dm

tribal path Jul 14, 2019, 6:46 PM

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theres showcase & catalog pys for kivy if you want to run/view those.

thanks i'll have a look, just cant wrap my head around connecting kv with python stuff is all

alpine blaze Jul 14, 2019, 6:47 PM

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so, at my previous company i made extensive use of kivy on big multitouch interfaces, that lasted a few years, here are a few examples
https://vimeo.com/297768834
https://vimeo.com/266530336 (the top part on this one is not kivy, though we could totally have done that in kivy, here it's web and communicates with websockets to the python app)
https://vimeo.com/238618045
https://vimeo.com/257492885
https://vimeo.com/206290310 that's a kind of multitouch CMS
https://vimeo.com/297757037

glad beacon Jul 14, 2019, 6:49 PM

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well thats a good example

alpine blaze Jul 14, 2019, 6:51 PM

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and here are a few more rougth, experimental things i did on my side https://www.youtube.com/watch?v=Umls6ytXasU&list=PLbYnM5cEP79vc5GF9Y84d2lEv5SMpdQJd&index=3

YouTube

Gabriel Pettier

lidar2

displaying lidar point clouds using a custom 3d view based on kivy code available at https://github.com/TangibleDisplay/cloudpoints

▶ Play video

glad beacon Jul 14, 2019, 6:51 PM

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are you french tshirt?

alpine blaze Jul 14, 2019, 6:51 PM

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yes

glad beacon Jul 14, 2019, 6:51 PM

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xd

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i live near

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luxembourg

alpine blaze Jul 14, 2019, 6:51 PM

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nice 😃

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there are also quite a few examples of apps in https://kivy.org/#gallery

Kivy: Cross-platform Python Framework for NUI

Open source Python framework for rapid development of applications
that make use of innovative user interfaces, such as multi-touch apps.

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some of them very nice

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trifusion is awesome for example

jolly turret Jul 14, 2019, 6:56 PM

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wow, thanks for sharing @alpine blaze
Looks like a great platform for large shared touchscreens. What's the device you're using in these videos if you don't mind me asking?

tribal path Jul 14, 2019, 6:56 PM

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looks custom made if not OG Surface

jolly turret Jul 14, 2019, 6:57 PM

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Is this a platform that could be used to make native-seeming apps for mobile or is that out of scope?

tribal path Jul 14, 2019, 7:00 PM

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yea. well dl pydroid3 and run some of the examples, or run via kivy launcher. for an actual apk youd need to compile them though

alpine blaze Jul 14, 2019, 7:01 PM

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yeah, it was usually a big TV with a PQLab overlay on the top, and a computer, usually a NUC for convenience

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@jolly turret yeah, kivy also works on android and IOS and a lot of people use it for that

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well, depends on what you mean by native-seeming

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it won't look exactly like the native widgets, until you put some effort into emulating that

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but it can be better integrated and have better framerate performances than web based ports of apps

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the good news is that you can make the widgets exactly like you want them to

digital rose Jul 14, 2019, 7:52 PM

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anyone experienced with PyQtWebEngine? i have a personal program that uses it and worked flawless...i have just switched from ubuntu to kubuntu and now program still works no errors at all but QWebEngineView now doesn't show at all even tho everything else is fine! Only differences are from python3.6 to python3.7 and PyQt5==5.9.2 to PyQt5==5.12.2?

tribal path Jul 14, 2019, 8:10 PM

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any difference in underlying Qt version?

digital rose Jul 14, 2019, 8:15 PM

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yeah 5.9.2 to 5.12.2 but nothing in the changlogs about QtWebEngine

tribal path Jul 14, 2019, 9:05 PM

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thats qt version as well as pyqt right?

digital rose Jul 15, 2019, 7:07 AM

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Yeah

tribal path Jul 15, 2019, 9:10 AM

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tried pinging the url you're using?

tribal path Jul 15, 2019, 10:23 AM

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so with kivy what would be the best/ideal way of showing say ~500 options, multiple spinners?

flow I'm thinking is grid of spinners & a filter(s) to reduce options, with choice spawning another AccordionItem to show details.

dense copper Jul 15, 2019, 5:10 PM

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Wasted 6 hours to find how to do it, and i'm giving up =_=
I beg, tell me guys, to get access to any widget in kivy?
For example if i want to remove Label by pressing a Button next to it..

tribal path Jul 15, 2019, 6:08 PM

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self in .kv should reference the obj, can use that & a callback to destroy I'd assume

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self.parent.remove_widget(*widget/self*)

tidal spruce Jul 15, 2019, 6:33 PM

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pyside2 or pyqt?

dense copper Jul 15, 2019, 6:39 PM

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idk, but self. is not working in methods...
so if i have complicated tree of widgets, i have to use something like: obj.parent.parent.children[2].children[1].remove_widget() ?

dense copper Jul 15, 2019, 7:02 PM

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no way to get widget by id somehow?

tribal path Jul 15, 2019, 7:10 PM

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you can give it an id, and or attach a reference to the object to root. just going one parent up not work?

dense copper Jul 15, 2019, 7:30 PM

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it worked thanks, but its kinda not looks natural :D

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usually any lang have simple command like delete_by_id() or get_by_id()

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i've read there is something like root.ids. .. but it doesn't work for me

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maybe i have to impor something

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self.ids. and obj.ids. not working too

alpine blaze Jul 15, 2019, 9:29 PM

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@tribal path you could use a big spinner, maybe a grid popup or dropdown to make more efficient use of the space, or maybe have a combo box (search + dropdown), decide on the UX then implement in kivy, everything is possible.
@dense copper ids are usually the solution, but this is python, the important thing is to know how to pass references around

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root.ids is rarely useful in kv because root is the root of the current rule, and root.ids is all the ids in the rule, and all the ids in the rule are directely accessible by the id

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but app.root.ids can be useful, as app.root is always the app's root widget, and it has its own ids, and if you know the "path" to a widget (if you know id "a" is defined in rule for SomeWidget, and that SomeOtherWidget contains a SomeWidget instance with id b, and that the app's root contains a SomeOtherWidget instance as id c. the "path" would be app.root.ids.c.b.a) you can access that first widget from anywhere

dense copper Jul 15, 2019, 11:25 PM

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self.root? i'm really bothering about syntax.. not much info around internet.. and kivy.org totally blocked from my place :(

alpine blaze Jul 15, 2019, 11:28 PM

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if self is the app, it makes sense, otherwise, not unless you define a root property to pass another widget into

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oh, damn, bad that you can't access the website

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i can grab you the pdf version of the doc if that helps

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📎 kivy.pdf

dense copper Jul 15, 2019, 11:30 PM

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1.11.0 is up to date?

alpine blaze Jul 15, 2019, 11:30 PM

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kivy also comes with a directory of examples that you can study

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i also have quite a few examples in my gists https://gist.github.com/tshirtman/ the starred ones can be a helpful place to start, https://gist.github.com/tshirtman/starred

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hm, actually 1.11.1 was released, but i don't think there are a lot of changes in the documentation

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i know we are blocked by some ISP in russia :/, sent an email some time ago to the relevant authorities to ask for unblock, but it seems it's just that our ip is part of a block they don't like :/

dense copper Jul 15, 2019, 11:34 PM

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oh, thanks your examples looks helpful !
i'm using that pdf tho , its kinda painful to navigate, it's one of the reasons why i'm gaining experience with low rate :D

alpine blaze Jul 15, 2019, 11:37 PM

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you can build the doc localy if you clone the source code and install sphinx

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there is also a version of the doc on readthedoc, but seems we botched the theme https://kivy.readthedocs.io/en/master/

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it's usable, if ugly though

tribal path Jul 15, 2019, 11:41 PM

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was writing a long desciption of the tk version i mocked up but phone died...
anyway I'm still a bit unsure on integrating the py & kv langs.
what I have/will have is a class with methods that return pil images/text to display. would returning a kv string be viable? or would a template elsewhere and just output vars. Eventually I'll switch from pil to have kv draw stuff

dense copper Jul 15, 2019, 11:41 PM

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nice!! appreciate it really!

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your explanations gives a lot btw :D

alpine blaze Jul 15, 2019, 11:52 PM

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@dense copper happy to help

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@tribal path well, not sure exactly what you need, but you can use Builder.load_string() to load custom kv strings if you want, if you want to display images from memory, you can either use the Texture class directly (if it's rgba format or similar), or use the buffer interface with the image providers

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drawing with canvas instructions is quite easy and flexible, you should really give it a shot

tribal path Jul 15, 2019, 11:57 PM

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yea thats what I was thinking, load an AccordionItem string, need to see if i can figure out how to apply it though - still pretty new to kv but getting a handle on it

dense copper Jul 15, 2019, 11:57 PM

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Some says that root_widget.ids.known_id can't get widgets whos id was set via python: id='known_id'

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and i'm getting {} aswell ^^'

alpine blaze Jul 16, 2019, 12:00 AM

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when you load a string, it loads the rule inside it, and if there is a root rule (one without <> ), it'll return this one as a widget

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you can then add this widget to a parent

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@silver current you are probably trying too early, in the __init__ of the widget for example, the children are not yet loaded and added to it

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usually in kivy it's better to react to things, or let kv settle all the things from rules

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making the rules flexible (like, return a default value when something is not defined yet), can be really helpful

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good night! will try to answer tomorrow if you leave questions 😃

tribal path Jul 16, 2019, 12:07 AM

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thx, very helpful.

dense copper Jul 16, 2019, 2:27 AM

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class MyApp(App):
    def build(self):
        self.flow = TextInput(text='Flow')
        gl_left = GridLayout(padding=5, spacing=5)
    def testFunc(self,obj):
        print(self.flow)  #working!
        print(gl_left)  #not working!

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why i can refer to TextInput (it's a widget, right?)
but can't to GridLayout (widget too?)

lean marlin Jul 16, 2019, 2:35 AM

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https://github.com/CashDots/Basic-Clicker/tree/master can someone help me? the factories dont make money

GitHub

CashDots/Basic-Clicker

Contribute to CashDots/Basic-Clicker development by creating an account on GitHub.

near lagoon Jul 16, 2019, 6:55 AM

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@lean marlin You have a couple of lines like facsmoney * 1.5 which only make a calculation, but without putting the result anywhere. You probably meant *= for the operator.

Also, take a read on kivy properties. If you keep your money variables as NumericProperty, you can have labels etc update automatically, observing the change in the property.

silk echo Jul 16, 2019, 11:15 AM

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Edit, I'll just switch to another framework

glad beacon Jul 16, 2019, 6:53 PM

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Hi! So.. i am using kivy and i am getting some issues.. the first is that the color of my text from my image is different.. it is purple but in the program it's like red

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📎 unknown.png

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and the second issue is that i am getting some issues with the image

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📎 unknown.png

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some pixels are green

alpine blaze Jul 16, 2019, 7:23 PM

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@dense copper well, self is a thing you have access to in both context, but gl_left is only in the first one
@glad beacon hm, are there warnings about color profiles in the console? i think it can happen with images edited in some software, though i never had the issue myself :/ you might want to try saving as png instead of jpg and see if it changes something

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ah, i see you got it fixed in the kivy server 😃

tribal path Jul 16, 2019, 10:44 PM

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so just a couple q's
custom button(/label) cant seem to get the text centered -
with :
text_size == to button size
halign = centre
valign = bottom
the text is in the button but not centered

and 2) does switching between siblings in this case AccordianItems require a ScreenManager?

may need to join that server - when I rewrite in kvlang

alpine blaze Jul 16, 2019, 11:27 PM

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oh, if you don't use kvlang for that, you'll want to bind to button's size to update text_size everytime it changes

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button.bind(size=button.setter('text_size')) i think, though i never use this form because it's way easier with kvlang

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screen manager is needed to switch between screens, not needed for Accordion and its items

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https://discord.gg/T2vMEr

tribal path Jul 17, 2019, 2:38 AM

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just about getting the hang of integrating the 2 langs, but might have to keep that in python, (a grid with variable amount of custom Spinners). I did start redoing the button in kv so I suppose I could load that instead, what would you set there?

so can call an event to change focus to the other AccItem?

alpine blaze Jul 17, 2019, 7:17 AM

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I guess so, though i lack context, but you can react to an event and set focus to True on a widget through its id or reference, yes

glad beacon Jul 17, 2019, 9:40 AM

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hello!

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so.. like the normal window.. we have like that part where if we hold it we can move the window
(top border/title bar)
and i removed all borders and want to make a custom one
but the problem is that i can't move my window now
..
i know how to exit
but i don't know how to do that

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btw using kivy

glad beacon Jul 17, 2019, 10:21 AM

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actually:

📎 unknown.png

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i can't move the window

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and when i minimize it with Window.minimize()

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it's like this when i open it again

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📎 unknown.png

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and when i double click the app on the the task bar

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it stays like this

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📎 unknown.png

glad beacon Jul 17, 2019, 11:03 AM

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mention me if you can help me^^

tribal path Jul 17, 2019, 11:52 AM

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for context, a similar issue

    SpinBox
    Label:
        text: "Alter This"```
SpinBox is custom class, how would I alter the sibling Label text from something nested within SB. go from app root? or bind something... and yea wasnt seeing info the focus attribute on searches or was blanking on them

alpine blaze Jul 17, 2019, 6:08 PM

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Give a reference to label to Spinbox, or maybe have label's text bound to a property of Spinbox, if it makes more sense @tribal path

tribal path Jul 17, 2019, 6:15 PM

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yea makes sence things have gotten a tad messy, but 'tis the norm for me.

tried an AccordItem per option instead of the spinners but quickly ran out of space to draw on. does AccordItem on Floatlayout work - or is there a carosel... probs wont use it but may if filtered down to a usable amount

alpine blaze Jul 17, 2019, 6:43 PM

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i don't often use Accordion for this reason, it takes a lot of space

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depending on the situation, tabs or screens or carousel, can be better

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ScreenManager is really essential to a lot of applications

digital rose Jul 18, 2019, 9:37 AM

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at tkinter is any way to make it more "friendly?"

glad beacon Jul 18, 2019, 10:58 AM

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i am back @alpine blaze .. are you there?

alpine blaze Jul 18, 2019, 5:53 PM

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@glad beacon now i am

glad beacon Jul 18, 2019, 6:07 PM

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well

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i saw another tutorial

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and still confuse

alpine blaze Jul 18, 2019, 6:44 PM

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about objects and classes?

glad beacon Jul 18, 2019, 7:12 PM

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Yes

alpine blaze Jul 18, 2019, 7:30 PM

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class AClass(object):
    def method_a(self):
        pass

    @classmethod
    def method_b(cls):
        pass

    @staticmethod
    def method_c():
        pass

this is a class, you can pass it around, as it's an object.

B = A

you can call the class and static methods on it directly

A.method_b()
A.method_c()

but you can't call method_a directly, you need to instanciate A first

a = A()
a.method_a()

and a is only an instance of A, all instances you create are different objects

a = A()
b = A()
a != b

a.value = 1
b.value # dosent exist

#

is all that clear to you?

glad beacon Jul 18, 2019, 7:31 PM

#

Now I am totally confuse

#

So my def is like method a

#

And for that I need to create an instance?

alpine blaze Jul 18, 2019, 7:32 PM

#

yeah

#

but i'm pretty sure you already have an instance

#

so you don't want to create a new one, you want to use the one you have

#

or calls to the method of the new one will update the new one, not the old one

glad beacon Jul 18, 2019, 7:34 PM

#

Hmm?

#

I did create an instance

alpine blaze Jul 18, 2019, 7:34 PM

#

i'm confused that not just one, but multiple tutorials on python and classes you read failed to cover these things

glad beacon Jul 18, 2019, 7:34 PM

#

But I don’t think it’s correct

#

Hmm I will check that in like 5 mins

#

What happens if I just change that to a class def

alpine blaze Jul 18, 2019, 7:43 PM

#

it's not able to save changes to the instance anymore

#

what's your Geral class and how is it created?

#

(no need for the full code, just the role and the code where you create the instance)

glad beacon Jul 18, 2019, 7:48 PM

#

my geral class in a screen

#

and i added the def to that class

#

where should i create that instance?

#

because i don't think i have one

#

class Geral(Screen):

    def irsite(self):
        webbrowser.open("Link")

    def irdc(self):
        webbrowser.open("Link")

    def mcusers(self):
        server = MinecraftServer.lookup("mc.hypixel.net:25565")
        status = server.status()
        usersmc = ("{0}".format(status.players.online, status.latency))```

alpine blaze Jul 18, 2019, 8:01 PM

#

do you use it in kv?

glad beacon Jul 18, 2019, 8:01 PM

#

what do you mean

#

if i use this screen?

alpine blaze Jul 18, 2019, 8:01 PM

#

do you have Geral: in your kv code

#

yes

glad beacon Jul 18, 2019, 8:01 PM

#

yes

#

it's my main screen

alpine blaze Jul 18, 2019, 8:02 PM

#

then you have an instance

#

so you want to use that

glad beacon Jul 18, 2019, 8:02 PM

#

so

#

Geral.usersmc?

alpine blaze Jul 18, 2019, 8:02 PM

#

no

#

Geral is the class

glad beacon Jul 18, 2019, 8:02 PM

#

Geral is also an instance as you said above

alpine blaze Jul 18, 2019, 8:02 PM

#

when you put Geral: in kv, it creates an instance of the class

#

no, that's know what i said

#

you want to access that instance

#

the way you do that in kv is by giving an id to this instance

#

so you can access it from the rule that contains the id

glad beacon Jul 18, 2019, 8:03 PM

#

hmm

#

so

#

    transition: NoTransition()
    Login:
    Geral:
    id: geralscreen
    Regras:```

#

??

alpine blaze Jul 18, 2019, 8:04 PM

#

you need to indent that id like but yes

glad beacon Jul 18, 2019, 8:05 PM

#

ye

#

so

#

geralscreen.usersmc?

alpine blaze Jul 18, 2019, 8:06 PM

#

not exactly, you need to access that id from the widget that contains it, i assume WindowManager is your root widget, so you could do self.root.ids.geralscreen

#

but since you are doing this binding in build() of the app, the rule is not loaded yet, so self.root is not defined, and neither is geralscreen

#

so you need to do that binding after build has returned

glad beacon Jul 18, 2019, 8:07 PM

#

WindowManager is the screenmanager

alpine blaze Jul 18, 2019, 8:07 PM

#

yeah, i guessed that

#

but that's your root rule, right?

#

(i.e, it has no <> around it in the kvlang, and it starts without indentation)

glad beacon Jul 18, 2019, 8:08 PM

#

yes

#

so

#

self.root.ids.geralscreen.usersmc to get the var?

#

well to get it on the kv file or in the py file

alpine blaze Jul 18, 2019, 8:11 PM

#

we were doing the binding, not the value check

glad beacon Jul 18, 2019, 8:11 PM

#

oh

alpine blaze Jul 18, 2019, 8:11 PM

#

i though you wanted to use the value in GeralScreen, or it wouldn't make sense to go all the trouble defining it in there instead of on the app

glad beacon Jul 18, 2019, 8:14 PM

#

lol the only thing i want is to do like

#

that every 5 seconds it updates the value of the player count

#

and changes it in the GUI

#

that's the big objectif

alpine blaze Jul 18, 2019, 8:19 PM

#

yeah, so when i suggested yesterday to put the property on the app, and you decided to put it on the Geral class, was that just an overlook?

#

it's kind of a 3 lines change

#

but it's only easy if you understand what you do

glad beacon Jul 18, 2019, 8:23 PM

#

well honestly

#

wait

#

the stringproperty?

#

i put it on the MyMainApp class

#

o the build def

alpine blaze Jul 18, 2019, 8:24 PM

#

i told you that was wrong, to put it at class level

#

anyway, show your code, let's fix it and be done with it

glad beacon Jul 18, 2019, 8:25 PM

#

lol

#

class Login(Screen):
    def loginf(self):
        if logins.get(self.ids.cargo.text) == self.ids.passw.text:
            self.manager.current = "geral"
        else:
            self.manager.current = "login"


class Geral(Screen):

    def irsite(self):
        webbrowser.open("https://??.com/")

    def irdc(self):
        webbrowser.open("https://discord.gg/??")

    def mcusers(self):
        server = MinecraftServer.lookup("mc.hypixel.net:25565")
        status = server.status()
        usersmc = ("{0}".format(status.players.online, status.latency))

class Regras(Screen):
    pass


class WindowManager(ScreenManager):
    pass


class P(FloatLayout):
    pass


with open('my.kv', encoding='utf-8') as kvfile:
    kv = Builder.load_string(kvfile.read())


class MyMainApp(App):
    def build(self):
        Clock.schedule_interval(Geral.mcusers, 5)
        self.title = 'NxAuxiliar'
        return kv


if __name__ == "__main__":
    MyMainApp().run()```

alpine blaze Jul 18, 2019, 8:27 PM

#

class MyMainApp(App):
    usersmc = StringProperty()

    def build(self):
        Clock.schedule_interval(self.mcusers, 5)
        self.title = 'NxAuxiliar'
        return kv

    def mcusers(self, dt):
        server = MinecraftServer.lookup("mc.hypixel.net:25565")
        status = server.status()
        self.usersmc = ("{0}".format(status.players.online, status.latency))

#

and use app.usersmc in the kv lang

glad beacon Jul 18, 2019, 8:32 PM

#

it was only that?

#

i feel kinda stupid

#

well getting an error

#

1 s

#

https://pastebin.com/tjBfAHkE

Pastebin

Traceback (most recent call last): File "C:\Program Files (x86...

alpine blaze Jul 18, 2019, 8:37 PM

#

hm, that's weird

#

something prevents the app to initiate it seems

glad beacon Jul 18, 2019, 8:38 PM

#

hmm

alpine blaze Jul 18, 2019, 8:38 PM

#

oh you load the kv before the app is created

glad beacon Jul 18, 2019, 8:39 PM

#

rip

alpine blaze Jul 18, 2019, 8:39 PM

#

you could move the "with open…" part inside the build function

glad beacon Jul 18, 2019, 8:39 PM

#

doing that right now

#

lets see now

#

rip it gives me another error

#

i think the same

#

oh

#

not exactly the same

#

https://pastebin.com/W9McNx28

Pastebin

Traceback (most recent call last): File "C:\Program Files (x86...

alpine blaze Jul 18, 2019, 8:43 PM

#

probably a typo on my side or yours, in usersmc

glad beacon Jul 18, 2019, 8:44 PM

#

class MyMainApp(App):

    def build(self):
        with open('my.kv', encoding='utf-8') as kvfile:
            kv = Builder.load_string(kvfile.read())
        Clock.schedule_interval(self.mcusers, 5)
        self.title = 'NxAuxiliar'
        return kv

    def mcusers(self):
        server = MinecraftServer.lookup("mc.hypixel.net:25565")
        status = server.status()
        self.usersmc = ("{0}".format(status.players.online, status.latency))


if __name__ == "__main__":
    MyMainApp().run()```

alpine blaze Jul 18, 2019, 8:44 PM

#

seriously?

#

please reread my code

glad beacon Jul 18, 2019, 8:44 PM

#

ok on my side

#

that's for sure

alpine blaze Jul 18, 2019, 8:44 PM

#

you left out an important part

glad beacon Jul 18, 2019, 8:44 PM

#

ohhhhh

#

i forgot the stringproperty

#

uh

#

now i get this

#

   File "C:/Users/AfonsoSK/PycharmProjects/NxAuxiliar/app.py", line 74, in <module>
     MyMainApp().run()
   File "C:\Program Files (x86)\Python37-32\lib\site-packages\kivy\app.py", line 855, in run
     runTouchApp()
   File "C:\Program Files (x86)\Python37-32\lib\site-packages\kivy\base.py", line 504, in runTouchApp
     EventLoop.window.mainloop()
   File "C:\Program Files (x86)\Python37-32\lib\site-packages\kivy\core\window\window_sdl2.py", line 747, in mainloop
     self._mainloop()
   File "C:\Program Files (x86)\Python37-32\lib\site-packages\kivy\core\window\window_sdl2.py", line 479, in _mainloop
     EventLoop.idle()
   File "C:\Program Files (x86)\Python37-32\lib\site-packages\kivy\base.py", line 339, in idle
     Clock.tick()
   File "C:\Program Files (x86)\Python37-32\lib\site-packages\kivy\clock.py", line 591, in tick
     self._process_events()
   File "kivy\_clock.pyx", line 384, in kivy._clock.CyClockBase._process_events
   File "kivy\_clock.pyx", line 414, in kivy._clock.CyClockBase._process_events
   File "kivy\_clock.pyx", line 412, in kivy._clock.CyClockBase._process_events
   File "kivy\_clock.pyx", line 167, in kivy._clock.ClockEvent.tick
 TypeError: mcusers() takes 1 positional argument but 2 were given

#

like it opens the app

#

but then it stops it

#

oh

#

ok

#

i think i know

alpine blaze Jul 18, 2019, 8:46 PM

#

it's not a lot of code to read, you should read carefuly, everything is there for a reason

glad beacon Jul 18, 2019, 8:47 PM

#

hmm i am getting confused now

#

it says

#

that mcusers takes 1 positional argument

#

but 2 were given

#

were is the second one

alpine blaze Jul 18, 2019, 8:48 PM

#

yes, please read my definition of mcusers again

glad beacon Jul 18, 2019, 8:48 PM

#

ok

alpine blaze Jul 18, 2019, 8:48 PM

#

and look at the doc for Clock.schedule_interval if it's not clear

glad beacon Jul 18, 2019, 8:48 PM

#

is it speaking about

#

self.usersmc = ("{0}".format(status.players.online, status.latency))

#

this 2 arguments

alpine blaze Jul 18, 2019, 8:49 PM

#

no

#

mcusers ≠ usersmc

glad beacon Jul 18, 2019, 8:49 PM

#

hm

#

ye really need to change that name

#

.-.

alpine blaze Jul 18, 2019, 8:49 PM

#

no it's good that they are distinct

#

not great names, but at least they are distinct

glad beacon Jul 18, 2019, 8:49 PM

#

well a little bit confusing

#

well i think the problem is with the clock

#

do i need to have that (dt)

#

like

#

def my_callback(dt): pass

alpine blaze Jul 18, 2019, 8:55 PM

#

well, that's still only one argument

#

it said you needed two

glad beacon Jul 18, 2019, 8:56 PM

#

my value

#

and my key

#

like here

#

    pass

Clock.schedule_interval(partial(my_callback, 'my value', 'my key'), 0.5)```

alpine blaze Jul 18, 2019, 8:57 PM

#

right, yeah, both of these will work if they are not methods, the first one because you actually get dt, and the second one becuase you get unexpected arguments in largs

glad beacon Jul 18, 2019, 9:00 PM

#

hmm but why do i need these args

#

if i will not use them

alpine blaze Jul 18, 2019, 9:01 PM

#

you might need it so it's there, if you don't need it, don't use it, but you need to accept it

glad beacon Jul 18, 2019, 9:01 PM

#

hmm ok

#

it works

#

btw

#

thx

digital rose Jul 18, 2019, 11:22 PM

#

at tkinter is any way to make it more "friendly?"

glad beacon Jul 18, 2019, 11:48 PM

#

Idk

#

I use Livy

#

Kivy*

#

A lot better

digital rose Jul 19, 2019, 12:02 AM

#

for tkinter

alpine blaze Jul 19, 2019, 6:19 AM

#

it's just another UI, different API and different results, but i also think kivy offers much more possibilities in an easier way than tkinter

#

if it's suited to your particular need depends on your particular need, of course

digital rose Jul 19, 2019, 7:02 AM

#

just asking, i use tkinter, is useful for what i need

#

if i could make it to be more friendly was better

alpine blaze Jul 19, 2019, 7:08 AM

#

What's not friendly about it for you?

#

You can always create your own abstractions around it if you want

#

If you see things that look like common patterns of usage, allow yourself to try making them easier to implement trough generic code

karmic shoal Jul 19, 2019, 7:44 AM

#

PySimpleGUI has a complete wrapper around tkinter

rocky dragon Jul 19, 2019, 6:58 PM

#

How can I bring a Qt window to the top of the qt app

#

everything I google gets me to bringing it to os focus

steep bluff Jul 19, 2019, 7:25 PM

#

I created a button(with tkinter) but the command needs to be lambda and awaited. how can i get this to work?

digital rose Jul 19, 2019, 9:18 PM

#

📎 unknown.png

#

Button(command=login, image=(PhotoImage(file="my_screenshot.png", height=2, width=30))).pack()

#

i made the height to 30

#

and i cant click on button

steep bluff Jul 20, 2019, 2:19 PM

#

How can i create a tkinter button command with await and lambda?

slate umbra Jul 20, 2019, 3:12 PM

#

@steep bluff do you know what await and lambda means?

steep bluff Jul 20, 2019, 3:13 PM

#

not exactly

slate umbra Jul 20, 2019, 3:13 PM

#

go learn what those are first

steep bluff Jul 20, 2019, 3:14 PM

#

really

#

this is your help

slate umbra Jul 20, 2019, 3:14 PM

#

yes

steep bluff Jul 20, 2019, 3:14 PM

#

thanks for this brilliant help

slate umbra Jul 20, 2019, 3:14 PM

#

you are gonna have to know what async/await means and then what lambda means to understand how to make the button

#

dont hate the player hate the game

#

¯_(ツ)_/¯

digital rose Jul 20, 2019, 9:13 PM

#

am creating simple smol CPU temperature monitor program using gtk
def temperature():
f = open('/sys/class/thermal/thermal_zone0/temp')
print(f.read(), end='')
this is what i use for measuring temp i wonder if its correct lol
but i am stuck not knowing how to tell python to pull out the ouput of the command, and put it inside the gtk window

sudden coral Jul 20, 2019, 10:15 PM

#

@digital rose Which GTK library for Python do you use. Have you looked at their docs for labels/text boxes? You can explore the docs for those objects and you may find a function or variable you can set to specify the text they display.

#

Not familiar with GTK but hope that helps anyway

digital rose Jul 20, 2019, 10:16 PM

#

ughh i cannot really read docs by myself man sadly

sudden coral Jul 20, 2019, 10:16 PM

#

Well I just gave you some pointers for how you would find something relevant by yourself

digital rose Jul 20, 2019, 10:16 PM

#

i mean i am trying slowly, maybe i am close to making it

sudden coral Jul 20, 2019, 10:16 PM

#

Look for a function or variable on the object that's named "set_text" or "set_value"

#

something similar

#

that's like a typical pattern

#

Or maybe they have some quickstart guides that cover some basics like this

digital rose Jul 20, 2019, 10:17 PM

#

i am just trying to figure out indent troubles but ill see, already solving stuff

amber locust Jul 21, 2019, 4:16 PM

#

I'm using tkinter to make a UI, the things are set up as classes (currently only 2 screens but more to come), how do I swap between them?

amber locust Jul 22, 2019, 9:43 AM

#

;-;

atomic sphinx Jul 23, 2019, 5:00 AM

#

@amber locust what do you mean "swap between them"?

#

I have a pyqt question, I think it should be simple

#

class Stream(QtCore.QObject):
    newText = QtCore.pyqtSignal(str)

    def write(self, text):
        self.newText.emit(str(text))

class Window(QtGui.QMainWindow):
    def __init__(self):
        ...
        sys.stdout = Stream(newText=self.onUpdateText)
    
    def onUpdateText(self, text):
        ...

#

how come passing in that newText keyword when instantiating the Stream object, actually works?

#

like what's going on there

alpine blaze Jul 23, 2019, 6:21 AM

#

QObject must have a metaclass, able to create the newText attribute and initializing in __init__ by keyword, we have the same thing in kivy

atomic sphinx Jul 23, 2019, 6:22 AM

#

oh interesting

#

thanks

kind kraken Jul 24, 2019, 8:25 PM

#

it wouldn't have to be a metaclass

#

with no __init__ you're relying on QObject's own __init__, which could be accepting **kwargs

#

(it does use a metaclass, but just what we've seen here doesn't require it)

young dust Jul 25, 2019, 12:10 PM

#

class Win(tk.Tk):

    def __init__(self,master=None):
        tk.Tk.__init__(self,master)
        self.overrideredirect(True)
        self._offsetx = 0
        self._offsety = 0
        self.bind('<Button-1>',self.clickwin)
        self.bind('<B1-Motion>',self.dragwin)

    def dragwin(self,event):
        x = self.winfo_pointerx() - self._offsetx
        y = self.winfo_pointery() - self._offsety
        self.geometry('+{x}+{y}'.format(x=x,y=y))

    def clickwin(self,event):
        self._offsetx = event.x
        self._offsety = event.y```

#

im using this class to make my root movable because i have root.overrideredirect(1)

#

is it possible to disable this while you are in text box?

#

cause when if i try to select text it moves the window

#

(tkinter)

thorny spruce Jul 25, 2019, 1:16 PM

#

You could check event.widget to see if it's the root window

#

def dragwin(self, event):
    if event.widget is not self:
        return
    x = self.winfo_pointerx() - self._offsetx
    y = self.winfo_pointery() - self._offsety
    self.geometry('+{x}+{y}'.format(x=x,y=y))```

#

So you can only drag the window if you are clicking on the root window

young dust Jul 25, 2019, 1:37 PM

#

oh i didnt see your answer

#

thanks so much

livid lynx Jul 25, 2019, 8:08 PM

#

I hope this is the right place to ask the following. I just started with PyQt5 today and I'm struggling with intercepting a close event. Can someone help me pls? Thanks!

rocky dragon Jul 25, 2019, 8:30 PM

#

for a close event of a window change the closeEvent method

#

for example

    def closeEvent(self, *args, **kwargs):
        super(QtWidgets.QMainWindow, self).closeEvent(*args, **kwargs)
        #stuff

#

@livid lynx

livid lynx Jul 25, 2019, 8:40 PM

#

@rocky dragon Thanks a lot for the quick reply! I think I'm doing something wrong as it's not working

rocky dragon Jul 25, 2019, 8:41 PM

#

Can you post your whole class? use https://paste.pydis.com if it's longer

livid lynx Jul 25, 2019, 8:45 PM

#

I've trimmed away all the labels and buttons of the class and pasted it here: https://paste.pydis.com/aveqinideb.py

sudden coral Jul 25, 2019, 8:48 PM

#

You should subclass QMainWindow first

rocky dragon Jul 25, 2019, 8:49 PM

#

Not sure how it works with the weird qt designer code I don't fully understand, but it should work if you inherit from QMainWindow on your class

#

something like https://paste.fuelrats.com/buyinarata.py

livid lynx Jul 25, 2019, 8:52 PM

#

@sudden coral I'm not sure I understand what subclassing means. So I should make a subclass subQMainWindow and then in the main() have MainWindow = subQMainWindow() instead of what I have now?

sudden coral Jul 25, 2019, 8:52 PM

#

Yeah kind of.

#

You can just make your existing class be a subclass of QMainWindow

livid lynx Jul 25, 2019, 8:53 PM

#

@rocky dragon It works. Damn! Thanks a lot!

sudden coral Jul 25, 2019, 8:54 PM

#

What I recommend you do is keep the generated class separate from your own class

#

that way you can edit the window in Qt Designer and generate new code without overwriting any of your own code

livid lynx Jul 25, 2019, 8:55 PM

#

I see. I also tried just straight up loading the .ui file but that didn't seem to easy for me

#

I will take your advice.

sudden coral Jul 25, 2019, 8:56 PM

#

I saw some support for loading ui files but I found it easier to make work by just using the tool to generate code

rocky dragon Jul 25, 2019, 8:56 PM

#

I found it easier to redo the base code generated from ui files and then use that, but that's mainly because I couldn't get signals to work with them and some things lacking there

sudden coral Jul 25, 2019, 8:57 PM

#

I had no trouble with it. Sounds tedious to remake ui files. If you do that then you really can't go back to using the qt designer anymore

livid lynx Jul 25, 2019, 8:58 PM

#

Just curious, how do you pass object around classes? For example, I have the Ui_MainWindow object. When I press a button from the main window I want to put some variable from another object into a label of the UI. How can I pass all of this without modifying the generated .py file?

sudden coral Jul 25, 2019, 8:59 PM

#

You can either subclass the generated class in addition to subclassing QMainWindow

#

or you can instantiate the generated class within your own class and save it as an instance attribute

#

that way you always have access to the object

#

You can modify the generated object but as long as the code is in your class and not in the generated file then you don't need to worry about having to re-do code when you re-generate the file

livid lynx Jul 25, 2019, 9:00 PM

#

@sudden coral I have to google at least 4 things you said but I will eventually understand what you meant. In the meanwhile, thanks a lot for your help

rocky dragon Jul 25, 2019, 9:03 PM

#

@sudden coral Could you send me some functional code made with the qt designer that has some communication between windows? Just wondering how it looks

sudden coral Jul 25, 2019, 9:04 PM

#

I think one of my previous code jams fits the bill https://github.com/MarkKoz/code-jam-4/tree/master/project

GitHub

MarkKoz/code-jam-4

Task for our fourth code jam! Contribute to MarkKoz/code-jam-4 development by creating an account on GitHub.

rocky dragon Jul 25, 2019, 9:10 PM

#

How do you add stuff like in the methods here? https://github.com/albertopoljak/code-jam-5/blob/master/right_rebels/gui.py

sudden coral Jul 25, 2019, 9:11 PM

#

which methods?

#

there are a lot sweatcat

rocky dragon Jul 25, 2019, 9:11 PM

#

for example show_options

sudden coral Jul 25, 2019, 9:12 PM

#

First, I always called setupui inside the __init__ I feel it's perfectly suited to go there. The consumer of the class shouldn't have to do that

#

Then, I always kept a single instance of all my windows and simply reset them when they close. This worked out fine for me but can be more of a hindrance to reset them than to just re-create them when they get more complex.

#

So in my case I didn't have to deal with setting up signals every time

#

I only do it once, but yeah I basically did it the same way

#

https://github.com/MarkKoz/code-jam-4/blob/master/project/widgets/main_window.py#L29

GitHub

MarkKoz/code-jam-4

Task for our fourth code jam! Contribute to MarkKoz/code-jam-4 development by creating an account on GitHub.

#

My concern with what you did is that those objects will be garbage collected when the function ends

#

I had issues with that and the fix was to make them instance attributes instead of local variables

rocky dragon Jul 25, 2019, 9:15 PM

#

they won't be because self is passed as parent

sudden coral Jul 25, 2019, 9:15 PM

#

Oh true

rocky dragon Jul 25, 2019, 9:18 PM

#

So you tihnk it would be better to just call self.setup_ui in the init of each window and then call show instead of that in the methods that initialize them?

sudden coral Jul 25, 2019, 9:18 PM

#

Yes

#

When would you want to instantiate the class and not call setupUI? I can't think of a reason

rocky dragon Jul 25, 2019, 9:20 PM

#

I'd ask you about my code that I work with more but I commited something ugly yesterday 😄

flat yew Jul 26, 2019, 11:20 PM

#

Ive been trying Pyside2, but I cant get it working

#

None of my widget show, I just get an empty window

#

class StartupWindow(QWidget):
    def __int__(self):
        QWidget.__init__(self)

        self.window_selectList = QListWidget()

        for (name, hwnd) in boraxlib.get_windows():
            self.window_selectList.addItem(f"{name} - {hwnd}")

        self.window_selectList.show()

        layout = QVBoxLayout()
        self.btn = QPushButton("Select VM executable")
        self.btn.clicked.connect(self.getfile)
        layout.addWidget(self.btn)

        def get_file(self):
            fname = QFileDialog.getOpenFileName(self, 'Open file', 
                'c:\\',"Image files (*.jpg *.gif)")
            
if __name__ == "__main__":
    # Qt Application
    app = QApplication(sys.argv)

    for (name, hwnd) in boraxlib.get_windows():
            print(f"{name} - {hwnd}")

    window = StartupWindow()
    window.show()
    sys.exit(app.exec_())

#

I dont get it

#

everything looks fine to me?

sudden coral Jul 26, 2019, 11:21 PM

#

First thought is to try using a QMainWindow but I don't know if that's strictly required; I've just never not used one.

flat yew Jul 26, 2019, 11:21 PM

#

Ive one already!

#

Im trying to make a window before the main window

#

to choose some init settings

#

dont know how to do it properly tho

sudden coral Jul 26, 2019, 11:22 PM

#

Does the main window work at least?

flat yew Jul 26, 2019, 11:22 PM

#

kinda

sudden coral Jul 26, 2019, 11:22 PM

#

Can you elaborate?

flat yew Jul 26, 2019, 11:22 PM

#

no widget gets shown, but the status and file menu work

sudden coral Jul 26, 2019, 11:23 PM

#

How are you adding the widgets?

flat yew Jul 26, 2019, 11:24 PM

#

Ive tried directly adding it to it's init, and adding it to the CentralWidget

#

none work

#

I think im missing smthing but idk what

sudden coral Jul 26, 2019, 11:24 PM

#

For the code you showed above, you aren't using setLayout()

#

So that's a problem

#

And you aren't adding the list widget to the layout

flat yew Jul 26, 2019, 11:26 PM

#

I changed those things I think

#

still the same

rocky dragon Jul 26, 2019, 11:37 PM

#

you have int instead of init

sudden coral Jul 26, 2019, 11:40 PM

#

oh good catch

flat yew Jul 26, 2019, 11:42 PM

#

Oh

#

carlosMatosFacepalm

rocky dragon Jul 26, 2019, 11:43 PM

#

always good to add a few prints or breakpoints to check if the code you expect is getting executed is actually getting executed

unique python Jul 27, 2019, 2:54 AM

#

I made this with ttk, should I redo it in Qt designer to get something better?

📎 unknown.png

sudden coral Jul 27, 2019, 2:57 AM

#

If you want to make it look nicer then yes qt is a good option

#

But whether or not you want that nobody but you can answer

hard sparrow Jul 27, 2019, 2:59 AM

#

@unique python Honestly a bit of padding and nice positioning can go a long way, you can also just switch to more of a flat style and adjust the colors for a bit more of a metro look if that floats your boat.

unique python Jul 27, 2019, 3:02 AM

#

I understand "flat style" as something like this, for me, it's amazing, but no f°°cking idea how to do it

📎 220px-Flat_widgets.png

hard sparrow Jul 27, 2019, 3:04 AM

#

For buttons, text fields, scales and such its not too complicated; just a matter of removing borders and changing relief styling to flat, then changing the background color.

sudden coral Jul 27, 2019, 3:04 AM

#

That's called material design

#

It was developed by google

#

I don't know if and how you could do it in tk but hope that at least knowing what it's called is a start for you

unique python Jul 27, 2019, 3:06 AM

#

hahah thanks, the image was the first result I got of "flat style" in wikipedia

#

what where you writing @hard sparrow

#

?

hard sparrow Jul 27, 2019, 3:07 AM

#

Was gonna say its close enough for a start, not sure how to go about adding things like drop shadows and tiny rounded edges to things though.

#

Honestly if you want to get that fancy I like Kivy myself.

unique python Jul 27, 2019, 3:07 AM

#

Kivy

#

gonna look for it, you say is better than using qt designer?

hard sparrow Jul 27, 2019, 3:09 AM

#

Its easier to get the look you want as its material design by default (on all platforms)

#

But I don't think the app for designing a gui is worked on anymore so it would be all by hand.

#

Though its got an easily readable design language for that so you don't have to manually hand code every widget

sudden coral Jul 27, 2019, 3:10 AM

#

Qt has a material design theme built in

#

I've seen a third party widget package for kivy too

unique python Jul 27, 2019, 3:12 AM

#

thanks @sudden coral and @hard sparrow I will take in consideration all you said. But a last question

#

when I use qt designer, I end with a .ui file

#

how do I use it then?

sudden coral Jul 27, 2019, 3:13 AM

#

There's a tool that comes with pyside2 that converts it to python code

#

Pyqt5 also has it but it may be in a separate package (pyqt5-tools or something)

hard sparrow Jul 27, 2019, 3:14 AM

#

Also https://doc.qt.io/qtforpython/PySide2/QtUiTools/QUiLoader.html

sudden coral Jul 27, 2019, 3:14 AM

#

https://doc.qt.io/qtforpython/tutorials/basictutorial/uifiles.html#generating-a-python-class

#

I had bad experiences with the ui loader but don't remember the details of it

hard sparrow Jul 27, 2019, 3:15 AM

#

I would expect its not perfect being dynamic

sudden coral Jul 27, 2019, 3:15 AM

#

Generating code suited my needs anyway so I was fine

#

Was ever so slightly tedious to regenerate code after edits but whatever

#

I never edited the generated code so it wasn't a hassle to replace

unique python Jul 27, 2019, 3:17 AM

#

looks like now I have to read tons of lines of documentation 😃

#

thanks again to you two

hard sparrow Jul 27, 2019, 3:19 AM

#

If only I could go back to GUI libs, currently slogging through making a TUI because I want a clone of ncmpcpp that works in Windows

#

Getting there though.

📎 PDMPC_01.PNG

#

And communicating with MPD works fine

#

Thank goodness for windows-curses that uses PDCurses.

unique python Jul 27, 2019, 3:22 AM

#

69 days of music

sudden coral Jul 27, 2019, 3:22 AM

#

Thought there was no curses solution for windows

hard sparrow Jul 27, 2019, 3:24 AM

#

windows-curses is a module that is basically a patch for the existing curses module included with Python on windows which makes it use PDCurses, works great.

Before you could still work with curses in windows with some unicurses builds and specifying pdcurses dlls but I had issues with those.

#

Seems even terminal resize detection is working with a small workaround, which was previously one of my major gripes when I was working on TUI ebook reader.

sudden coral Jul 27, 2019, 3:25 AM

#

I'll keep it in mind if I ever want to make a tui

hard sparrow Jul 27, 2019, 3:25 AM

#

Though obviously stuff like fcntl won't work so Blessings and Urwid are broken.

sudden coral Jul 27, 2019, 3:25 AM

#

I have wanted to just for the fun of it I guess

unique python Jul 27, 2019, 3:25 AM

#

not understading shit but amazed

sudden coral Jul 27, 2019, 3:26 AM

#

Tui is a text based user interface if you didn't know

unique python Jul 27, 2019, 3:29 AM

#

I'am googling all this words yup

hard sparrow Jul 27, 2019, 3:29 AM

#

@unique python MPD is Music Player Daemon, a small service basically that runs in the background and handles keeping track of a music library and playing audio, mostly used under linux/unix but Windows builds are possible but I'm not a fan of a lot of the clients that talk to it so I'm trying to clone an existing one.

To be fair you can compile ncmpcpp for Windows but I was running into issues linking Boost libs in msys2 so gave up on compiling it, besides its a lot easier for other people to get into it by just downloading an already compiled version of MPD for Windows and installing a client. Hopefully when I'm done I'll have something that someone can simply pip install and be done with it.

sudden coral Jul 27, 2019, 3:29 AM

#

boost was a nightmare for me

unique python Jul 27, 2019, 3:29 AM

#

ncmpcpp is an old program that dosen't exist anymore?

sudden coral Jul 27, 2019, 3:30 AM

#

never figured out how the fuck to compile it. they have their own build system

hard sparrow Jul 27, 2019, 3:30 AM

#

Nah it does its a TUI for linux/unix, just a pain to build for windows.

#

@sudden coral Yeah Meson, I built MPD, MPC, and libmpd just fine though, only ncmpcpp gives me issues.

#

and that was with using msys2 and not mingw like they suggest

unique python Jul 27, 2019, 3:31 AM

#

Sounds like a nice proyect, and the look you gave it is really cool as I can see in the image, if some day you finish it tell me, I really want to see it

sudden coral Jul 27, 2019, 3:32 AM

#

post it in #303934982764625920 😉

hard sparrow Jul 27, 2019, 3:32 AM

#

https://computingforgeeks.com/wp-content/uploads/2018/03/mpd-ncmpcpp-interface.png
That is what it generally looks like

#

Yeah I'll likely throw it up on my github first that way I don't just post an image and provide no code to look at 😃

sudden coral Jul 27, 2019, 3:32 AM

#

still better than spotify 🙄

hard sparrow Jul 27, 2019, 3:33 AM

#

As you can tell I'm missing the actual playlist view atm

proper glade Jul 27, 2019, 4:28 AM

#

trying to switch an existing pyqt5 program to use material design

#

https://stackoverflow.com/a/43533434/10444096

#

tried the example here and it doesnt seem to work

#

i get

QApplication: invalid style override passed, ignoring it.

sudden coral Jul 27, 2019, 4:29 AM

#

Hmm... https://wiki.qt.io/Qt_for_Python_Missing_Bindings#QtQuick

Qt for Python Missing Bindings

proper glade Jul 27, 2019, 4:31 AM

#

i also tried using os.environ as shown here https://www.riverbankcomputing.com/pipermail/pyqt/2018-March/040180.html

#

doesnt do anything either

#

hmm

#

QQuickStyle's not on that list

#

so maybe it's been added

sudden coral Jul 27, 2019, 4:32 AM

#

Yeah, that's what I was thinking

#

The SO post is a bit old

proper glade Jul 27, 2019, 4:32 AM

#

just checked, doesnt seem like it, cant find it

#

there are a bunch of other QQuick things in here

hard sparrow Jul 27, 2019, 4:33 AM

#

https://github.com/pyqt/python-qt5/search?q=qquickstyle&unscoped_q=qquickstyle

GitHub

pyqt/python-qt5

Unofficial PyQt5 via PyPI for Python 2.7 64-bit on Windows - pyqt/python-qt5

sudden coral Jul 27, 2019, 4:33 AM

#

Looks like that is for PyQt though

proper glade Jul 27, 2019, 4:34 AM

#

where do i import these from

#

looks like you cant use them directly in code, only in qml

hard sparrow Jul 27, 2019, 4:35 AM

#

Oof

sudden coral Jul 27, 2019, 4:40 AM

#

Hello

#

I have discovered this https://doc.qt.io/qt-5/qtquickcontrols2-configuration.html

#

Can you set the style through that?

proper glade Jul 27, 2019, 4:41 AM

#

no idea

#

never really played around with qml/quick controls much

#

will try

sudden coral Jul 27, 2019, 4:42 AM

#

Neither have

#

Though it is my understanding that Qt's native material support is only for QtQuick controls

proper glade Jul 27, 2019, 4:42 AM

#

ah rip

sudden coral Jul 27, 2019, 4:44 AM

#

You can take a crack at porting https://github.com/laserpants/qt-material-widgets

GitHub

laserpants/qt-material-widgets

:art: Qt widgets-based implementation of the Material Design specification. - laserpants/qt-material-widgets

#

Or maybe try just using a stylesheet https://github.com/martinrotter/qt-material-stylesheet/blob/master/stylesheets/material-blue.qss

GitHub

martinrotter/qt-material-stylesheet

QtWidgets stylesheet based on Google Material design. - martinrotter/qt-material-stylesheet

proper glade Jul 27, 2019, 4:44 AM

#

ye, trying the stylesheet rn

#

📎 unknown.png

sudden coral Jul 27, 2019, 4:45 AM

#

lovely

proper glade Jul 27, 2019, 4:45 AM

#

ready to ship

sudden coral Jul 27, 2019, 4:45 AM

#

Well if you spend time tinkering with the stylesheet you could probably come up with something nice

#

but that sounds tedious

proper glade Jul 27, 2019, 4:46 AM

#

its fine

#

📎 unknown.png

#

im quite happy with the ui as it is

#

was just curious how itd look with material design

young dust Jul 27, 2019, 6:20 AM

#

Anyone can test out if this looks fine? - give opinion

📎 idea.exe

#

code if dont trust exe

📎 PySIGv1.py

cosmic tiger Jul 27, 2019, 8:20 AM

#

What GUI Library would people here recommend for a intermediate programmer who had no experience creating applications (outside of decade old WYSIWYG Visual Basic), that has cross-platform (Linux, Win, MacOS) support? I've tried AppJar but the functionality was too basic for what I need without a heck of a bodge, and I've tried learning Kivy but I find the documentation a bit lacking for how to actually use it.

I know of this page listing different frameworks: https://wiki.python.org/moin/GuiProgramming
but I know enough to know that I don't know enough to make a good decision.

young dust Jul 27, 2019, 8:22 AM

#

kivy is good i've heard

#

and has even android support

sudden coral Jul 27, 2019, 8:22 AM

#

Qt if kivy isn't working out

#

Though I wouldn't give up on it yet

#

Try looking for examples if you had trouble with the docs

young dust Jul 27, 2019, 8:22 AM

#

oh didnt finish reading your message

#

🤦

cosmic tiger Jul 27, 2019, 8:23 AM

#

The examples don't actually show all the code, other than in the "after the step, file should look like this" part, so just following along with them doesn't actually produce usable results

#

basically just stuck copy/pasting their code

sudden coral Jul 27, 2019, 8:24 AM

#

I can't really comment cause I've not used it

#

I've just heard its a good choice

#

I use qt myself

cosmic tiger Jul 27, 2019, 8:24 AM

#

I mean, it looked like it would be a good choice, but I just am having troubles getting it to work lol

#

I don't know GUIs enough to use it properly

sudden coral Jul 27, 2019, 8:26 AM

#

I think qt has good docs (well some of the examples have not been converted from cpp to python but they're close enough) and it's a mature library (though pyside2, the python bindings, are relatively young).

#

But there are some knowledgeable kivy people that hang out here. If you ask a more concrete question for help with kivy they may help you get it working

cosmic tiger Jul 27, 2019, 8:45 AM

#

I'll check out Qt because honestly, I know I don't know enough about Kivy to ask any useful concrete questions. Maybe in the future I'll understand it better.

alpine blaze Jul 27, 2019, 12:15 PM

#

hm, that's a bit sad to read, what tutorial did you follow? The doc is more about explaining the concepts and showing the api, granted, than about tutorials

cosmic tiger Jul 27, 2019, 12:53 PM

#

It was mainly while I was following the Pong tutorial. Things like "serve_ball" only getting a passing mention in a note in the "Adding Ball Animation" section, and then is modified again later in the "Connect Input Events" without even a note that time to explain the change.

flat yew Jul 27, 2019, 1:57 PM

#

qt has good docs, but the tuts are all over the place, making it very confusing sometimes

#

having like 4 different versions don't help

alpine blaze Jul 27, 2019, 4:39 PM

#

@cosmic tiger yeah, i've not been happy with the state of our tutorials, i'm gathering some motivation to do better, we'll see how that fares

cosmic tiger Jul 27, 2019, 4:39 PM

#

I know you are, I saw the gist in the other discord. 😛

unique python Jul 27, 2019, 5:11 PM

#

@sudden coral at the end I think I will go with wxPython , Qt blowed up my head to use the ui file, and Kivy style ain't nice for me

alpine blaze Jul 27, 2019, 5:18 PM

#

i'm curious, if you don't mind, what's not nice in kivy's style for you? you mean how it looks? because it's really easy to customize if you wantot to give it another try

unique python Jul 27, 2019, 5:22 PM

#

Yes I mean how it looks, I hate thoose thicks buttons and stuff that makes me remember the front panel of a car

#

But I really would like to end using kivy beacuse of the cross platform. Do you know a good guide for customizing the style/look?

alpine blaze Jul 27, 2019, 5:25 PM

#

hm, not really a guide, but you can write rules to build your own buttons easily, and give them the look you like, or even write a rule that replaces the look of all the buttons in the app. either by setting properties like background_normal and background_down or just clearing the canvas and redrawing the text + decorations, usually i just build my own buttons and use them. I treat the widgets shipped in kivy as placeholders, not definite versions (aside Label/Image, which are basic enough, and the layouts, which don't need any theming)

#

i'm actually in the process of writting a few tutorials about kivy, i'll note to make one hinting in that direction

unique python Jul 27, 2019, 5:29 PM

#

that sounds as the same work I should do in ttk to the program I already have. Do you have any screenshot or example of an app with a different look? so I can know it's possible

alpine blaze Jul 27, 2019, 5:34 PM

#

well, there are apps with very different looks here https://kivy.org/#gallery if you want to see things i worked on specifically, https://vimeo.com/272219637 is one, https://vimeo.com/289327060 https://vimeo.com/297757037 https://vimeo.com/272416300 https://vimeo.com/254338352 etc, are all apps i did over the last few years at my previous company, it's all 100% kivy

Kivy: Cross-platform Python Framework for NUI

Open source Python framework for rapid development of applications
that make use of innovative user interfaces, such as multi-touch apps.

#

i have a lot of other examples, but that should be enough to get you convinced it's possible 😃

unique python Jul 27, 2019, 5:40 PM

#

yes convinced, they all look really good

alpine blaze Jul 27, 2019, 5:51 PM

#

thanks 😃

tribal path Jul 27, 2019, 8:36 PM

#

the atlas stuff is handy for that to, to keep things readable too

unique python Jul 28, 2019, 6:13 AM

#

Any suggestions?

📎 unknown.png

#

like font, where to put color

sudden coral Jul 28, 2019, 6:15 AM

#

It doesn't make sense to have radio buttons for the configuration

#

typically radio buttons signify "select only one out of many"

#

Check boxes would be better

unique python Jul 28, 2019, 6:16 AM

#

I realised after putting them, but I concluded that they were nicer

sudden coral Jul 28, 2019, 6:16 AM

#

Unintuitive from a user's perspective

unique python Jul 28, 2019, 6:17 AM

#

I guess I will change it unless dosen't look

#

something else?

sudden coral Jul 28, 2019, 6:20 AM

#

I dunno. I am not good with design

unique python Jul 28, 2019, 6:22 AM

#

hmm

📎 unknown.png

alpine blaze Jul 28, 2019, 7:52 AM

#

can't the box containing the option take the full width of the panel? it's weird like this, and if you have multiple item per line, i would look into having them aligned verticaly, like in an grid, for legibility

#

and yes, checkboxes are more intuitive for users in this case, radio button are almost univesaly used for either/or options

half vapor Jul 28, 2019, 3:28 PM

#

I want to have a GUI with a grid of 255x255 pixels that I can change easily, I tried using Tkinter with a Canvas but having that many rectangles crashes it, what's a good way to do something like that?

hard sparrow Jul 28, 2019, 3:51 PM

#

PyGame might be a better idea if you just want to draw individual pixels.

#

I'm assuming you mean literal pixels @half vapor and not just that many tiles of whatever size will fit on the screen while maintaining aspect ratio.

#

Specifically pygame.gfxdraw.pixel()

alpine blaze Jul 28, 2019, 5:09 PM

#

Kivy should handle it easily too, you can generate a texture of custom size with the Texture class

#

If you want 255x255 widgets, that's heavier, but should still be possible

#

https://kivy.org/doc/stable/api-kivy.graphics.texture.html

livid lynx Jul 28, 2019, 6:17 PM

#

Hi everyone! Anybody with some PyQt experience know if there is a way to limit the width of a splitter. When the resizing a window I want the horizontal splitter to work as it does right now. After 1000px window width let's say, I want one side of the splitter to stop increasing. Is this possible without going into the splitter drag event? Thanks!

sudden coral Jul 28, 2019, 7:06 PM

#

Hmm I can't think of another way. You're thinking of something equivalent of CSS media queries?

#

If you find another way I'd be interested in knowing about it

unique python Jul 28, 2019, 7:39 PM

#

@alpine blaze I made the box only in the left because I wanted to put something else in the confit but I can’t remember what =). And what do you mean with having them vertically aligned? The container where they are has a vertical top level layout

alpine blaze Jul 28, 2019, 10:00 PM

#

i mean the first column is obviously aligned, but the second is not, it would be better if it was like a grid

unique python Jul 29, 2019, 12:12 AM

#

ahh

#

could be

tribal path Jul 29, 2019, 4:00 PM

#

RecycleView on kivy... can you set an action that doesnt self-trigger on app startup. in my case they're popups ~a dozen from the top of the data

#

was wondering for a sec why the background transparency was decreasing but its 'cus they're stacked

alpine blaze Jul 29, 2019, 8:10 PM

#

😆

#

well, i don't know what action you setup to trigger your popups, but certainly a value change that happens too often

#

you certainly need to add a condition to it, at least

thick moat Jul 29, 2019, 9:46 PM

#

Which is better Interface library QT, Kivy, Beeware or others (suggest a good one)? @ me if you have a suggestion 👍

#

Please Help ^

sudden coral Jul 29, 2019, 9:56 PM

#

wxPython is another one. And I think you're asking a hard question

#

Any "what is the best" question is usually hard because in reality it's not so black and white

#

I'm not qualified to give you any sort of answer cause I've not tried all the libraries. But I can say I use Qt and I like it

cosmic tiger Jul 29, 2019, 10:24 PM

#

I'm sure @alpine blaze could tell you which one he likes best.

alpine blaze Jul 29, 2019, 10:24 PM

#

would i? 😄

#

But yeah, it's only personnal preferences, which one is the best depends on your requirements and taste

thick moat Jul 30, 2019, 6:01 AM

#

Can Qt make custom ui

#

and whats the difference between paided and open source is ther significant changes

alpine blaze Jul 30, 2019, 6:33 AM

#

i think you can do custom widgets with Qt, yes, though for this i would really advise looking into kivy, it's very very fit to this, you can create and compose any widget you might want. And regarding license, it's MIT, there is no proprietary version, it's all free (but you can support us if you have the means).

thick moat Jul 30, 2019, 7:25 AM

#

@alpine blaze well i download qt

#

can you tell some differences between kivy and qt and what about beware

#

or pyside

#

theres so many which one do i chose

#

the only reason was i didnt dowbload kivy is because it didnt look native

alpine blaze Jul 30, 2019, 9:24 AM

#

It's not native, it uses opengl to draw the widgets, and it doesn't try to look like any specific platform by default. You can customize however you want, but we don't think trying to emulate look and feel to any or all platform would be feasible or even desirable, with the current way you can have the exact UX you want, no matter the platform. I don't think ”looking native” is relevant for many apps anymore, you can do material design with kivy using KivyMD for example, or even by coding it yourself, the way kivy works makes that quite easy. A major difference between kivy and qt, is kivy is all python, not a c++ lib wrapped for python, so you can extend anything, python is a first class citizen, not an afterthough.

#

Beware is a nice idea, but imho the proof that doing multiplateform and native UX at the same time is too hard.

#

It's not usable for anything serious currently, and is not used at all, despite a lot of pretty intense work.

#

Not an expert in pyqt/pyside, as i understand it it's mainly a license difference, and a pretty similar api, but don't quote me on that

digital rose Jul 30, 2019, 10:40 AM

#

I really like kv language, it is very convenient and readable, in my opinion. Kivy properties are a very powerful thing. Kivy itself is logical and flexible. RecycleView is an indicator that you can create very complex interface elements with kivy. I am now writing a project with a large amount of code (for the desktop) and have not yet encountered any serious problems.

proper glade Jul 30, 2019, 12:29 PM

#

is there a learning resource to get started with kivy for people who are used to using qt/pyside?

#

like examples of how to do the same things side by side?

#

i just remembered im on the kivy discord server too so gonna ask there as well

digital rose Jul 30, 2019, 1:25 PM

#

@proper glade didn't see such tutorial. You can ask a specific question like "how to make X with kivy"

alpine blaze Jul 30, 2019, 6:41 PM

#

i don't think there is such thing

#

But if someone want to do the pyside side, i can try doing the kivy side

#

The aim of the tasks should be described in english first, so one knows what's important in the code example. Or emulating the default behavior of the other framework would cause unnecessary and taxing work

flat yew Jul 30, 2019, 9:39 PM

#

when I put

        window = QWindow.fromWinId(198208)
        self.createWindowContainer(window, self)
        self.setGeometry(700, 700, 500, 450)
        self.setWindowTitle('File dialog')

#

inside my mainwindowwidget

#

the stuff inside the widget doesnt respond anymore

#

like freezes

#

any1 know why, and how i can slove it?

barren elm Jul 31, 2019, 5:06 AM

#

Is it worth using OOP when using tkinter? Trying to learn it via an old tutorial from sentdex and it seems like a very convoluted way of doing things. Ultimately I am trying to make an app that does stock alerts.

karmic shoal Jul 31, 2019, 5:20 AM

#

If you're making a GUI app and are familiar with OOP I'd go with something like PySide2 rather than tkinter, unless you're specifically looking to learn tkinter

thorny spruce Jul 31, 2019, 6:12 AM

#

using classes with tkinter is much better otherwise you have globals everywhere and it's a mess because you have to provide callbacks for events

barren elm Jul 31, 2019, 7:09 PM

#

Honestly I'm game for using whatever works for a GUI. Not sure why I settled on tkinter. I am looking at other options. Thinking about maybe trying PyQt5. I'll also look at PySide2

#

And now I see they are similar. Interesting.

rocky dragon Jul 31, 2019, 7:18 PM

#

they are different libraries for the same thing

barren elm Jul 31, 2019, 7:30 PM

#

Indeed. I do like the idea of the designer for PyQt5. Going to try it out see how it works.

rocky dragon Jul 31, 2019, 7:32 PM

#

that should also work with pyside

loud sapphire Jul 31, 2019, 8:43 PM

#

Hello! Any Kivy specialists here?
I'm confused about some basics. Basics such as which module to run in the main class - the app or some layout?
Also, how do I create different screens and fill them with different layouts and content?
And can I place any layout into any screen and any widget into the layout? or is the screen something I shouldn't even use?

alpine blaze Jul 31, 2019, 8:54 PM

#

i'm a kivy specialist!

#

@loud sapphire the main.py module is usually used as an entry point, but that's just a generic choice, inside it, you generaly define at least your application class, which can be named how you want, but must inherit from the App class. and the app's build must return a root widget, which is very often a layout, the two classical ways to do this is either to override the build() method of the app, and return a widget at the end, or to define a kv file of the same name as the app (but without "app" at the end if your app names ends with "app", that's a little weirdness of kivy, i just never use it, i use a simple name for my app, like Something, not SomethingApp, so i don't have to care about that), that kv file will be automatically loaded, and its root rule will be returned as the root widget of the app.

#

to use different screens in your app, the most common way is to use the ScreenManager class, and to use Screen (or subclasses of it) inside it, you need to give them names (using the name property), and then you can set the "current" property of the screenmanager to the name of the screen you want to go, and it'll switch to it

#

depending on your screen complexity, you can either define the content directly in the rule that contains the ScreenManager, or subclass Screen so you can write specific rules for each screen, and define the content there

#

you should use screen, and you need to put a widget or layout inside it, any widget can be put in a layout, and layout are widgets too, so you can nest layouts and widgets however you want

digital rose Jul 31, 2019, 9:47 PM

#

@loud sapphire Hello World from kivy main page

from kivy.app import App
from kivy.uix.button import Button

class TestApp(App):
    def build(self):
        return Button(text='Hello World')

TestApp().run()

Here's my minimal template, I often start with it, although it may not be very clear for a beginner.

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.label import Label

KV = """
MyLabel

<MyLabel>
    text: '123456'
"""

class MyLabel(Label):
    pass

class MyApp(App):
    def build(self):
        return Builder.load_string(KV)

MyApp().run()

As you can see. here I created my own widget MyLabel based on Label

#

@loud sapphire
This is ScreenManager Example

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager

KV = """
ScreenManager

    Screen
        name:'screen1'
        Button
            text: 'This is screen 1. press to go to screen 2'
            on_press: root.current= 'screen2'

    Screen
        name:'screen2'
        Button
            text: 'This is screen 2. press to go to screen 1'
            on_press: root.current= 'screen1'

"""

class MyApp(App):
    def build(self):
        return Builder.load_string(KV)

MyApp().run()

https://imgur.com/a/mdFdvIE

Imgur

#

you also can do some things like this

from kivy.app import App
from kivy.lang import Builder

KV = """
BoxLayout
    orientation: 'vertical'

    BoxLayout
        size_hint_y : 0.1
        Button
            text: 'go to screen 1'
            on_press: sm.current = 's1'
        Button
            text: 'go to screen 2'
            on_press: sm.current = 's2'

    ScreenManager
        id: sm
        Screen
            name : 's1'
            Label
                text: 'Screen 1'
        Screen
            name : 's2'
            Label
                text: 'Screen 2'

"""

class MyApp(App):
    def build(self):
        return Builder.load_string(KV)

MyApp().run()

https://imgur.com/a/J1ZG2Ej

Imgur

loud sapphire Jul 31, 2019, 10:15 PM

#

Thanks for the guidance! me2beats and tshirtman
@alpine blaze So even layouts are widgets - does this example go in the right direction? (from the kv file)

ScreenManagement:
    transition: FadeTransition()
    WeatherScreen:
    RemindersScreen:

    
<WeatherScreen>:
    name: 'weather'
    FloatLayout:
        
        Label:
            id: temp_label
            text: root.display_temp() + '  ' + root.display_status()
            
        Button:
            size_hint: 0.2, 0.2
            pos_hint: {'right':1, 'top':1}
            on_release: app.root.current = 'reminders'
            text: 'back'
            color: 0,1,0,1
        
<RemindersScreen>:
    name: 'reminders'
    Label:
        text: 'test text'

I'm wondering about how to add these layouts, whether I need to define them as a class in the py file first or is it fine as it is in this example? My point here is that I feel like I did some unoptimal move here and now I lost my flexibility.
Ideally I would like to have the whole WeatherScreen in just one of the boxes in a BoxLayout. Can I treat each section in a BoxLayout as a different screen + apply screenmanager there?

alpine blaze Jul 31, 2019, 10:19 PM

#

if you define them like this (<Something>), you need to also define them in python, you can use dynamic classes if you want to do it only in Kv, which allows declaring inheritance in kv (SomethingScreen@Screen instead of <SomethingScreen>)

#

but it seems that ScreenManager and Screen is not what you want, here they are to switch between different displays in the same physical space, if you want to display things next to each others, at the same time, you don't need them, layouts are enough

#

ScreenManager is a widget too, so if you want one of the boxes in the BoxLayout to switch between multiple displays, you can use Screenmanager in there and use multiple Screens inside it

loud sapphire Jul 31, 2019, 10:33 PM

#

Oh, that sounds perfect. Then I think my only worry is about the syntax here. Does it all come down to the order I define the things in the kv file?

<GeneralScreen>:
    BoxLayout:
    <WeatherScreen>: ## First box would have this content, with 2 screens 
        FloatLayout:
            <WeatherScreenForecast>: ## This would be screen 1 of the first box
                name: 'weather_forecast'
                Label:
                    text: 'something'
                Button:
                    on_release: swap to current weather screen
            <CurrentWeatherScreen>: ## This would be screen 2 of the first box. 
                name: ''
                Label:
                ......<
    <AnotherScreen>: ## Second box would have different content
        Button:
            text: 'something'

Is this example heading in the right direction or did I get the wrong idea about using <AnotherScreen>: and so on?

digital rose Jul 31, 2019, 10:44 PM

#

@loud sapphire You have a screen inside a screen, right?
I do not think you can do that.
As far as I know, any screen should be a child of ScreenManager widget

alpine blaze Jul 31, 2019, 10:45 PM

#

you can't use a rule definition (<>) inside another rule definition, you can either directly use the name instead, and nest the content inside, or use just the rule name and define the rule elsewhere

#

<GeneralScreen>:
    BoxLayout:
    WeatherScreen: ## First box would have this content, with 2 screens 
        FloatLayout:
            WeatherScreenForecast: ## This would be screen 1 of the first box
                name: 'weather_forecast'
                Label:
                    text: 'something'
                Button:
                    on_release: swap to current weather screen
            CurrentWeatherScreen: ## This would be screen 2 of the first box. 
                name: ''
                Label:

    AnotherScreen: ## Second box would have different content
        Button:
            text: 'something'
<WeatherScreen@Screen>
<AnotherScreen@Screen>

#

but yeah even like this it looks like not what you want

loud sapphire Jul 31, 2019, 10:49 PM

#

So weatherScreen and AnotherScreen can be defined in the py file too right. Just make a class and pass. Then do I still need to define it in the kv file somehow or can I just go straight to just referring to the name.
Like the example with WeatherScreenForecast:
If I have it as a class in the py file, I can use it in kv without first making any rule definition using <>, right?

#

Does it look something like I don't want due to its structure? E.g. unoptimal code?

#

I think can clear the first part out by simple trial and error process. It was great help @alpine blaze , thanks! 😃 I now have a much clearer idea on how to approach this. 💪

alpine blaze Jul 31, 2019, 10:58 PM

#

no, i mean, you don't put the widgets inside the BoxLayout (you need to add indentation) ,and then you add FloatLayout inside the weather Screen, but i think here you actually want it to be a ScreenManager switching between forecast and current? and AnotherScreen would be aside the WeatherScreen ?

#

i just have too much to guess here

loud sapphire Jul 31, 2019, 11:00 PM

#

Yep, the idea is to try to have the first box to swap (eventually automatically) between 2 types of content, and then anotherscreen would just be another box inside the boxlayout.

alpine blaze Jul 31, 2019, 11:05 PM

#

yeah, then it would look more like this ```yaml
BoxLayout:
ScreenManager:
WeatherForecastScreen:
CurrentWeatherScreen:
AnotherWidget:

WeatherForecastScreen@Screen:
name: 'forecast'
Label:
text: 'something'
Button:
on_release: root.manager.current = 'current'

CurrentWeatherScreen@Screen:
name: 'current'
Label:
text: 'It's always sunny'

barren elm Aug 1, 2019, 1:56 AM

#

Using PyQT5 and it closes my window when i run a method via a button bush. No error text. This is annoying to troubleshoot.

sudden coral Aug 1, 2019, 2:01 AM

#

Does it happen for any button? Does it happen for any method?

barren elm Aug 1, 2019, 2:03 AM

#

just tried a method with only a print statement. Still crashes out. insteresting

#

made it a function outside of the class and a print statement now works.

#

ok I got it. functions need to load after the class object.

barren elm Aug 1, 2019, 11:03 PM

#

How exactly do you add a widget inside of another widget via a button event in PyQT5?

def test(self):
    self.testLabel = QtWidgets.QLabel(self.scrollAreaWidgetContents)
    self.testLabel.setGeometry(QtCore.QRect(0, 0, 777, 42))
    self.testLabel.setObjectName("testLabel")
    self.testLabel.setText('helddddddddddddddddddddddddddddddddddddddlo')
    self.alert_scrollArea.setWidget(self.scrollAreaWidgetContents)

#

I used the Designer to make my GUI design. Just trying to add new widgets inside a premade scroll area.

ember pike Aug 2, 2019, 12:37 AM

#

How would I go about adding buttons using a for loop, and using certain buttonsnames like b1, b2, ... in tkinkter

thorny spruce Aug 2, 2019, 12:52 AM

#

If you want to put them each in their own variable you can't (well you can but shouldn't) the better option is to add them to either a list or dictionary and access them that way

ember pike Aug 2, 2019, 1:52 AM

#

how would i go about that?

#

buttonList = ['b1', 'b2', 'b3', 'b4', 'b5', 'b6', 'b7', 'b8', 'b9', 'b10']
for i in buttonList:
            buttonList [i] = Button(mainPage, text=title, command=createWindowTest)
            buttonList [i].place(x = 25, y = 25)

#

i was thinking this but the buttonList [i].place(x = 25, y = 25) doesn't work

#

@thorny spruce

thorny spruce Aug 2, 2019, 1:56 AM

#

When you do for i in buttonList i is a string, so buttonList [i] won't work. All the buttons are being created the same way, Button(mainPage, text=title, command=createWindowTest) what do you want to be different about them? You are also placing them all in the same spot place(x = 25, y = 25)

ember pike Aug 2, 2019, 2:00 AM

#

So I have a list of 10 items in a list. And each button needs another name so I can do different tasks with each button

#

And the coords stuff is already correct in my existing file. That was just a code snippet I typed.

thorny spruce Aug 2, 2019, 2:03 AM

#

So you can do something like this

import tkinter as tk

root = tk.Tk()

buttons = []
for i in range(5):
    btn = tk.Button(root, text=f'Button {i}')
    btn.pack()
    buttons.append(btn)

root.mainloop()

ember pike Aug 2, 2019, 2:04 AM

#

text=f'Button {i}'

#

i don't get this

thorny spruce Aug 2, 2019, 2:05 AM

#

That's just an f-string, you can also do text='Button ' + str(i)

#

!t f-string

proven basinBOT Aug 2, 2019, 2:05 AM

#

Tag not found.

f-string is an unknown tag name. Please check the spelling and try again.

ember pike Aug 2, 2019, 2:06 AM

#

Yeh but the button name: btn

#

Wouldn't that be always the same?

thorny spruce Aug 2, 2019, 2:06 AM

#

Oh oops, forgot to add it to the list

#

edited

#

So if you want the first button then you just use buttons[0]

#

If you want to map them to an id then a dictionary would be better

ember pike Aug 2, 2019, 2:11 AM

#

So what if I wanted to get the text of the button which is pressed would this work? butName = btn[0]['text']

thorny spruce Aug 2, 2019, 2:14 AM

#

How are you handling button presses?

#

You can do it this way

import tkinter as tk
from functools import partial

def on_button_press(button_id):
    print("You pressed button", button_id)
    print(buttons[button_id])

root = tk.Tk()

buttons = []
for i in range(5):
    btn = tk.Button(root, text=f'Button {i}',
                    command=partial(on_button_press, i))
    btn.pack()
    buttons.append(btn)

root.mainloop()```

ember pike Aug 2, 2019, 2:32 AM

#

Tyvm, appreciate the help.

rare ibex Aug 2, 2019, 10:14 AM

#

hello im working with an entry box and im not sure how to make it 'active' by default when the frame is brought to the front

alpine blaze Aug 2, 2019, 11:25 AM

#

you might want to say which UI library you are using

#

and maybe post a bit of code

livid lynx Aug 2, 2019, 10:54 PM

#

Hi guys! I have a small issue which seems to be very common but I don't even know what to google for. I'll just post a screenshot. My text field has a string in it which is longer than the dimensions of the box and I would like the beginning of the string to be shown. How can i go about in finding a solution for this? Thanks! I'm using pyqt5 btw.

📎 Capture.PNG

rocky dragon Aug 2, 2019, 11:03 PM

#

you could move the cursor to the first index

dark moat Aug 3, 2019, 3:06 AM

#

is there any widely used non-stdlib alternative to cmd for writing REPLs/shells? i need something a bit more powerful but google is just coming back with either cmd tutorials or CLI option parsers

#

i can write my own if needed (and probably will :P) but a second set of reference code would still be helpful

karmic shoal Aug 3, 2019, 3:30 AM

#

I've heard good things about https://github.com/prompt-toolkit/python-prompt-toolkit @dark moat

#

Got introduced to it by https://www.youtube.com/watch?v=hJhZhLg3obk, which you might also find useful

dark moat Aug 3, 2019, 3:32 AM

#

oh wow

#

this looks incredible, thanks :D

livid lynx Aug 3, 2019, 9:14 AM

#

@rocky dragon I have 10 fields with the same problem. I am looking for an automatic solution for all the fields. Something like textField.setCursorPosition(0)

alpine blaze Aug 3, 2019, 9:20 AM

#

just do a loop over all the fields?

livid lynx Aug 3, 2019, 9:29 AM

#

@alpine blaze do you know the function to set the position of the cursor?

proper glade Aug 3, 2019, 9:30 AM

#

looks like you can do it via stylesheet if you dont want to adjust cursor position for each one manually

#

https://stackoverflow.com/a/35941232

#

though im not sure if this will actually keep the cursor at position 0

#

rather change it once

alpine blaze Aug 3, 2019, 9:31 AM

#

no i don't, but that should be in the doc for the class of textField

proper glade Aug 3, 2019, 9:32 AM

#

one other option is having multiple cursors

#

one cursor to stay in one position

#

the other to enter text

#

not sure if lineedit supports multiple cursors though

#

and you might have to override key handlers to relay input from the cursor with focus (the one in a fixed position at 0) to the one at the end

#

oh, another, not great option is overriding the LineEdit's paintEvent and drawing the text yourself instead

#

https://doc.qt.io/qt-5/qpainter.html#drawText-2

#

class LeftAlignedLineEdit(QLineEdit):
    def paintEvent(self, event: QPaintEvent):
        painter = QPainter(self)
        painter.drawRect(self.rect())
        # something in here with fillRect to fill the inside
        painter.drawText(0, self.height(), self.text())

#

something along those lines

#

oops, paintEvent, not drawEvent

livid lynx Aug 3, 2019, 9:47 AM

#

I solved it! Thank you very much!

proper glade Aug 3, 2019, 9:47 AM

#

howd you do it?

livid lynx Aug 3, 2019, 12:13 PM

#

The PyQt5 documentation is pretty bad but I looked into PySide2 and found a .setCursorPosition(int) method for a text field which does the job. Maybe it's not the most elegant solution but after every .setText() call I add the .setCursorPosition() function call

rocky dragon Aug 3, 2019, 12:15 PM

#

usually better to just look at qt docs

livid lynx Aug 3, 2019, 12:15 PM

#

Pretty stupid of me to not figure this out on my own. That's sleep deprivation.

#

AFAIK the PyQt5 docs are here: https://www.riverbankcomputing.com/static/Docs/PyQt5/

#

but they seem incomplete

#

in many places I see TODO which is either what I think it is, namely, To Do. Or some programming jargon I'm not familiar with

alpine blaze Aug 3, 2019, 12:19 PM

#

both :P, it's pretty common to mark things as TODO in programs, but it really means To do

#

you might also encounter FIXME and XXX or NOTE and other variations in the wild

#

most text editors highlight these words for this reason

loud sapphire Aug 3, 2019, 6:53 PM

#

Hello again! Running into some weird problem with Kivy.
I'm running into some unexplainable error that seems to be an indentation error when loading my .kv file?

 TypeError: 'NoneType' object is not subscriptable
```py

Getting this while following the guidance here: https://kivy.org/doc/stable/guide/lang.html

#: import FadeTransition kivy.uix.screenmanager.FadeTransition

BoxLayoutWidget:
ScreenManagement:
WeatherScreen:
RemindersScreen:
AnotherScreen:

<BoxLayoutWidget>:
BoxLayout:
orientation: 'horizontal' #... continuing by describing class rules there

I hope it's not something too obvious because I

#

've been stuck for a while

#

I've tried it by referring to Kivy core widgets and to different classes I've created in py already.

#

Always the same error

#

in Py side it's this line. Presentation is what the App class is trying to return

presentation = Builder.load_file('TestApp.kv')

#

I found it! WOW
If one of the class rules has an odd indentation (just 1 line in a test class!!) it completely fails to load the file. And the error is just the general one you see above there.
It's scary out there guys, be safe.

digital rose Aug 3, 2019, 7:33 PM

#

yeah, and I would also advise physically separating the widgets from each other as often as possible. For example, I have each custom widget located in its own file (as well as custom behaviors).

Do not disdain to create widgets in "python" (I mean using add_widget). Recently I find it more flexible than using IDs, although this is not so obvious.

On the other hand, I always use kv when I need to set many parameters for a single widget (for example, size, pos, color, etc.).

loud sapphire Aug 3, 2019, 7:38 PM

#

Every widget in a separate file? How do you make sure the app finds the files?

#

Also, I've never done this before - how do I keep the data up to date in the app display? I'm currently calling the Openweathermap api to get current weather info, but it does it only once right.. what's the best practice of solving this? Using Python only seems hacky, from what I got from one of the help channels.
Is there some updating that needs to be run on the Kivy side too? This whole area is completely dark for me still.

digital rose Aug 3, 2019, 8:11 PM

#

@loud sapphire
I’ll say right away that I have not tested this structure well enough to suggest it.
Here is a simple example of how I achieve this.

root/main.py:

from kivy.app import App
from kivy.lang import Builder

from uix.main_root import MainRoot

class MyApp(App):
    def build(self):
        return MainRoot()

MyApp().run()

root/uix/mainroot.py:

from kivy.lang import Builder
from kivy.uix.boxlayout import BoxLayout
from uix.my_label import MyLabel

KV = """
<MainRoot>
    MyLabel
"""

class MainRoot(BoxLayout):
    pass


Builder.load_string(KV)

root/uix/my_label.py:

from kivy.lang import Builder
from kivy.uix.label import Label

KV = """
<MyLabel>
    text: '123456'
"""

class MyLabel(Label):
    pass

Builder.load_string(KV)

besides i have folders:
bhv (custom behaviors)
utils (useful python functions)
resources (for images etc)
and so on

also as you can see, I do not divide the widget into kv and the python class physically - they are both in the same file. At the moment I find it convenient

alpine blaze Aug 3, 2019, 8:26 PM

#

you can use the Factory to tell kivy in which module to find widgec classes, so it loads them on demand

digital rose Aug 3, 2019, 9:09 PM

#

@alpine blaze it is also convenient, I suppose this is for widgets in kv file?
I'll look this way too

#

@loud sapphire for weather updating I think you can use Clock.schedule_interval([here_is_your_function_that_gets_weather_and_updates_widget_text] , 60) <-- if you update weather exery minute

loud sapphire Aug 3, 2019, 9:14 PM

#

Ooh, that looks perfect. Thanks @digital rose

digital rose Aug 3, 2019, 9:15 PM

#

@loud sapphire something like this
https://github.com/charliecambray/kivy-weather-scrape/blob/master/WeatherApp.py

GitHub

charliecambray/kivy-weather-scrape

A tool to scrape temperature data from darksky.net and display it with Kivy - charliecambray/kivy-weather-scrape

#

(tho it seems that the weather will not be updated here, as the weather does not seem to be updated in the code)
if I understand correctly, the author should do requests.get (url)
every minute (that is inside his wCheck method), and update spans, but he doesn’t

thick moat Aug 3, 2019, 11:51 PM

#

my first user interface with kv language kivy https://i.imgur.com/cqZMYTA.png any tips

Imgur

digital rose Aug 4, 2019, 12:13 AM

#

@thick moat Well, it depends on what you want to get) on how you imagine your application, what it can do, etc

thick moat Aug 4, 2019, 12:30 AM

#

@digital rose i am trying to make an app that looks native

#

should i use qt

thick moat Aug 4, 2019, 12:54 AM

#

How do I make the button smaller than the stuff above and make the stuff above smaller so it doesnt fit to edge like a small text box https://i.imgur.com/nDsNyp0.png

Imgur

#

@digital rose

#

probaly native size

digital rose Aug 4, 2019, 1:22 AM

#

@thick moat

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.label import Label


KV = """
BoxLayout
    orientation: 'vertical'
    MyLabel
        text: '123'

    FloatLayout

        Button
            size_hint: None, None
            text: '123456'

            size: 200,100
            pos_hint:{'center_x': 0.5, 'center_y': 0.5}


<MyLabel>
    #just background coloring
    canvas.before:

        Color:
            rgba: 0.3,0.2,0.4,1
        Rectangle:
            pos: self.pos
            size: self.size
"""

class MyLabel(Label):
    pass


class MyApp(App):
    def build(self):
        return Builder.load_string(KV)


MyApp().run()

📎 layout.png

thick moat Aug 4, 2019, 1:24 AM

#

K

digital rose Aug 4, 2019, 1:27 AM

#

that is you can set size_hint: None, None
then widget size
then pos_hint

thick moat Aug 4, 2019, 1:27 AM

#

K

#

is qt better for native looking

#

📎 4xDflE8afzkAAAAASUVORK5CYII.png

#

@digital rose

digital rose Aug 4, 2019, 1:43 AM

#

@thick moat I think yes, since kivy does not prefer any platform (it is cross-platform), so it does not supply native widgets.
although you can implement almost any appearance if you wish, but it may take some time to do this.

thick moat Aug 4, 2019, 1:48 AM

#

@digital rose is qt better at doing native for windows and what are some other options

digital rose Aug 4, 2019, 1:52 AM

#

@thick moat
can’t tell you this, I basically had only kivy experience.

thick moat Aug 4, 2019, 1:54 AM

#

k

digital rose Aug 4, 2019, 1:56 AM

#

as for the first question:
from wiki
"Most GUI programs created with Qt have a native-looking interface"
So you can try this

kind kraken Aug 4, 2019, 2:43 AM

#

you might try wxpython too

shy jolt Aug 4, 2019, 5:41 AM

#

Anyone using visual studio code?

thick moat Aug 4, 2019, 5:41 AM

#

yee why @shy jolt

#

some times

shy jolt Aug 4, 2019, 5:42 AM

#

i just started using it, but, xD its hurting my brain not being able to use tab to automatically accept closing brackets/parenthesis like visual studio 2017.

#

i checked keyboard preferences and such

#

but can't find any setting for it, i'm wondering if you figured out a way or you're fine using it out of the box like it is set up

thick moat Aug 4, 2019, 5:44 AM

#

googling

#

https://marketplace.visualstudio.com/items?itemName=albert.TabOut

#

not sure if this is ithttps://marketplace.visualstudio.com/items?itemName=OnlyLys.leaper

shy jolt Aug 4, 2019, 5:46 AM

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obviously you're much better at googling things 😐

thick moat Aug 4, 2019, 5:46 AM

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https://github.com/microsoft/vscode/issues/22864

shy jolt Aug 4, 2019, 5:46 AM

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xD thank you!

thick moat Aug 4, 2019, 5:47 AM

#

not sure sorry

shy jolt Aug 4, 2019, 5:47 AM

#

@thick moat no no, you actually helped me! problem solved.. i remember a long time ago using leaper

meager gazelle Aug 4, 2019, 5:47 AM

#

@shy jolt one day you'll realize programming is actually Googling with extra steps guido

thick moat Aug 4, 2019, 5:48 AM

#

Yeah

glad igloo Aug 4, 2019, 5:48 AM

#

Question: Where can I get people to test my software?

shy jolt Aug 4, 2019, 5:48 AM

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@meager gazelle 😛

thick moat Aug 4, 2019, 5:48 AM

#

#unit-testing @glad igloo and #303934982764625920

thick moat Aug 4, 2019, 6:18 AM

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How can i learn everything about the kv language because its pretty small and easy like every attriubute and stuff

cosmic tiger Aug 4, 2019, 7:53 AM

#

Is there a designer for PyQt5? I've found mention of it on the internet but attempts to install it so far either fail due to lack of source or because it tries to run from a Qt4 folder

meager gazelle Aug 4, 2019, 8:00 AM

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@cosmic tiger yes, it exists as standalone and embedded in QtCreator iirc

alpine blaze Aug 4, 2019, 8:24 AM

#

i don't think #unit-testing is for people to test your software, it's to discuss the ways to test software imho, (unittests, integration tests, CI, etc)

#

@thick moat the doc page on the language is there https://kivy.org/doc/stable/guide/lang.html and there is the more in-depth page in the api-doc https://kivy.org/doc/stable/api-kivy.lang.html

thick moat Aug 4, 2019, 8:28 AM

#

Thanks

#

@alpine blaze I am using the example from https://kivy.org/doc/stable/api-kivy.uix.scrollview.html?highlight=scrollview#module-kivy.uix.scrollview kv example. But I get this error

alpine blaze Aug 4, 2019, 8:37 AM

#

which error?

thick moat Aug 4, 2019, 8:37 AM

#

https://paste.pythondiscord.com/avekotatem.py

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sorry just had to make a paste

#

code py file ```import kivy
from kivy import Config
from kivy.app import App
from kivy.uix.widget import Widget

Config.set('graphics', 'multisamples', '0')

class Application(Widget):
pass

class MyApp(App):
def build(self):
return Application()

if name == "main":
MyApp().run()

alpine blaze Aug 4, 2019, 8:37 AM

#

sorry i got impatient 😄

thick moat Aug 4, 2019, 8:37 AM

#

kv file ```<Application>
ScrollView:
do_scroll_x: False
do_scroll_y: True

    Label:
        size_hint_y: None
        height: self.texture_size[1]
        text_size: self.width
        padding: 10, 10
        text:
            'really some amazing text\n' * 100

#

XD

alpine blaze Aug 4, 2019, 8:38 AM

#

text_size: self.width, None

#

seems our example is wrong

thick moat Aug 4, 2019, 8:39 AM

#

what can i replace the label with a button

#

yes i can

#

thanks @alpine blaze

alpine blaze Aug 4, 2019, 8:39 AM

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any widget, yes

thick moat Aug 4, 2019, 8:39 AM

#

Great

alpine blaze Aug 4, 2019, 8:40 AM

#

fixed the doc, (but you won't see it in the stable version, only in the master version)

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(when it'll have been rebuilt)

thick moat Aug 4, 2019, 8:41 AM

#

what are you like the creator of kivy or something @alpine blaze

cosmic tiger Aug 4, 2019, 8:42 AM

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yep

#

Tshirtman is a core dev

thick moat Aug 4, 2019, 8:42 AM

#

what

cosmic tiger Aug 4, 2019, 8:42 AM

#

...Tshirtman is a core developer of Kivy

thick moat Aug 4, 2019, 8:42 AM

#

👍

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i know thanks tshirtman

alpine blaze Aug 4, 2019, 8:46 AM

#

i'm a core dev, but not the creator

#

but i've been around the project a looong time 😄

#

i don't dev a lot on the project these days, i help people that have questions with it a lot though

#

need to kick myself and start helping the project more again, it's really cool and i wish we had a better case to make

near lagoon Aug 4, 2019, 8:52 AM

#

Tbh I think your focus on support is really useful ^_^ The docs can be tricky to follow, and looking through your answers always clarifies. Probably helping a lot of people into kivy.

cosmic tiger Aug 4, 2019, 8:55 AM

#

One of the things I like about Kivy is that it seems to work nicely with 4k screens by default

#

unlike nearly every other UI framework I can find

alpine blaze Aug 4, 2019, 9:09 AM

#

that's great to hear, managing screen density is tricky

#

we still have some issues, like when you move one window between two screens of different densities

#

should be fixable, someone started on it i think but it might have winded down as it's a bit more involved as they expected

cosmic tiger Aug 4, 2019, 9:11 AM

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I just wish "Kivy Designer" was still around, I am horrid at design

alpine blaze Aug 4, 2019, 9:12 AM

#

it would probably help more people if i answered more questions on stackoverflow rather than in chat, as they turn up in google, but i do like the ability to ask questions and point at the solution.

#

as much as i liked glade when i did some gtk, once i understood kvlang, i never wished for a kivy designer, i'm pretty sure it would be slower to do things with it, and it's obvious that you would have less power

cosmic tiger Aug 4, 2019, 9:14 AM

#

more power doesn't help when you don't have the finesse to wield it

alpine blaze Aug 4, 2019, 9:17 AM

#

yes, but i do believe learning to weird the power of kv is not that hard, i might be biased of course, after years of using it, but i do remember after an initial confusion, it clicked pretty fast and my productivity changed radicaly

cosmic tiger Aug 4, 2019, 9:19 AM

#

It's not kv that's my problem, it's actual design. and getting things in the correct spots, with the correct dimensions, with the correct padding, in the correct colours.

#

I was horrible with CSS for the same reason

alpine blaze Aug 4, 2019, 9:21 AM

#

you can use a drawing program first, i like inkscape for example, draw your UI then cut it into pieces and build these in kvlang

#

there are of course more design oriented programs like sketch or figma

cosmic tiger Aug 4, 2019, 9:24 AM

#

So instead of using a program to desgin an app that outputs kvlang, I should learn a seperate app to make a static image version of the UI and then rebuild that in kvlang myself

alpine blaze Aug 4, 2019, 9:25 AM

#

the important part is not that you build a static image, is that you have the freedom to draw anything you want in that UI, it doesn't have to know how to build that in KV, then you can implement these components in any way you see fit.

thick moat Aug 4, 2019, 9:25 AM

#

is the room in use

alpine blaze Aug 4, 2019, 9:25 AM

#

a program that gives you that much freedom and builds the UI code would be a tremendeous task

#

@thick moat no, you can ask

thick moat Aug 4, 2019, 9:25 AM

#

Should I use kivy or qt

alpine blaze Aug 4, 2019, 9:26 AM

#

it depends

#

i'm partial to kivy, but it depends on what you want to build

#

in some cases qt is obviously more suited

thick moat Aug 4, 2019, 9:26 AM

#

ok can you help me write a kv file like this

#

let me draw in paint

cosmic tiger Aug 4, 2019, 9:27 AM

#

yeah, I understand why kivy-designer was archived, it's a hell of a project to undertake.

#

use Inkscape instead of Paint, Jpac. I hear it's better 😛

thick moat Aug 4, 2019, 9:28 AM

#

https://i.imgur.com/Tnt7T2A.png

Imgur

alpine blaze Aug 4, 2019, 9:28 AM

#

it is, yeah 😃 though paint is a bit better for that that it was in previous windows versions

thick moat Aug 4, 2019, 9:28 AM

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the only program i have is paint to draw XD

alpine blaze Aug 4, 2019, 9:28 AM

#

ok, well, it got the point accross i guess

thick moat Aug 4, 2019, 9:28 AM

#

i have this ```<Application>
GridLayout:
size: root.width, root.height
cols: 1
GridLayout:
ScrollView:
do_scroll_x: False
do_scroll_y: True

            Label:
                size_hint_y: None
                height: self.texture_size[1]
                text_size: self.width, None
                padding: 10, 10
                text:
                    'really some amazing text\n' * 100

    Button:
        text: "hi"

alpine blaze Aug 4, 2019, 9:28 AM

#

well, it seems you want two columns, not 1

thick moat Aug 4, 2019, 9:29 AM

#

true

alpine blaze Aug 4, 2019, 9:29 AM

#

and inside the first column, you want a lot of buttons? where do they come from?

thick moat Aug 4, 2019, 9:30 AM

#

so one side the left first colum there will be a scrool view with alot of button which i can add

#

on the right 3 buttons

#

does kivy designer work https://github.com/kivy/kivy-designer

GitHub

kivy/kivy-designer

UI designer for Kivy - DEPRECATED. Contribute to kivy/kivy-designer development by creating an account on GitHub.

alpine blaze Aug 4, 2019, 9:31 AM

#

no

#

if you have a lot of buttons in the first column, i would say to use RecycleView instead of ScrollView, it's nearly the same thing, but it automatically builds the content from data you give it

thick moat Aug 4, 2019, 9:33 AM

#

i can scorrl through it

#

brb keep explaining XD

alpine blaze Aug 4, 2019, 9:35 AM

#

example ```yaml
<Application>:
GridLayout:
cols: 2
RecycleView:
viewclass: 'Button'
data:
[{
'text': 'hello {}'.format(x)
} for x in range(500)]
RecycleBoxLayout:
orientation: 'vertical'
size_hint_y: None
height: self.minimum_height
BoxLayout:
orientation: 'vertical'
Button:
text: 'button 1'
Button:
text: 'button 2'
Button:
text: 'button 3'

#

this will display 500 "hello {}" buttons to the left, and the 3 static buttons to the right

#

of course, you usually bind datat to some list property that you update when you want to update the list of buttons

#

and you usually do a custom class for viewclass, so you can create the on_release handler calling a function in your python code (a method on the app class is a convenient way to do that), and properties of the class that you can also pass in the data dict.

thick moat Aug 4, 2019, 9:47 AM

#

@alpine blaze it displays this i had to add size: root.width, root.height

#

https://i.imgur.com/1E8JY0T.png

Imgur

alpine blaze Aug 4, 2019, 9:48 AM

#

oh right, 😄

#

added the missing orientation: 'vertical' part

#

in RecycleBoxLayout

#

i assume you defined Application as a subclass of Widget? you might want to inherit from a layout (FloatLayout or BoxLayout)instead, so you get the sizing (and posing if you use BoxLayout) for free

thick moat Aug 4, 2019, 10:02 AM

#

wdym? https://discordapp.com/channels/267624335836053506/338993628049571840/607510633579282432

#

@alpine blaze

alpine blaze Aug 4, 2019, 10:03 AM

#

the Application class, you defined it somewher, right?

thick moat Aug 4, 2019, 10:03 AM

#

main file ```python
import kivy
from kivy import Config
from kivy.app import App
from kivy.uix.widget import Widget

Config.set('graphics', 'multisamples', '0')

class Application(Widget):
pass

class MyApp(App):
def build(self):
return Application()

if name == "main":
MyApp().run()

alpine blaze Aug 4, 2019, 10:03 AM

#

or it wouldn't run

thick moat Aug 4, 2019, 10:03 AM

#

like this

alpine blaze Aug 4, 2019, 10:03 AM

#

yeah, that's what i meant on line 9

#

you subclass/inherit Widget

thick moat Aug 4, 2019, 10:03 AM

#

yeah ok thanks

alpine blaze Aug 4, 2019, 10:03 AM

#

Widget doesn't manage the pos/size of its children

thick moat Aug 4, 2019, 10:04 AM

#

thanks

#

So what link can I learn the Kv language again

#

@alpine blaze

alpine blaze Aug 4, 2019, 10:15 AM

#

look at history, i told you half an hour ago 😆

cosmic tiger Aug 4, 2019, 10:15 AM

#

Kivy in general: https://kivy.org/doc/stable/gettingstarted/intro.html
Simple Pong Tutorial: https://kivy.org/doc/stable/tutorials/pong.html
Info about the Kv language: https://kivy.org/doc/stable/guide/lang.html

thick moat Aug 4, 2019, 10:16 AM

#

Thanks

cosmic tiger Aug 4, 2019, 10:16 AM

#

I think you mean 1.75 hours ago

alpine blaze Aug 4, 2019, 10:16 AM

#

yeah, time dilatation i guess 😛

thick moat Aug 4, 2019, 10:17 AM

#

What can I make button in that recycle box thing from a file

alpine blaze Aug 4, 2019, 10:18 AM

#

you read the file and you save the info as a list of dicts in a property of the app at startup, and you bind your recycleview to that property

#

or you save the file as a json object, and you use kivy jsonstore

#

i should probably do a todolist tutorial using that

thick moat Aug 4, 2019, 10:38 AM

#

@alpine blaze if it read it from a file do I have to do in python and can I store a value in a button object in .kv file then retrieve it when you click it

alpine blaze Aug 4, 2019, 10:43 AM

#

reading the file should be done in python, and then yes, you can pass a custom value to your button using the data, and use that value when you click the button, using a custom class for your recycleview makes that easier

#

<CustomButton@Button>:
    some_id: ''
    on_press: app.some_function(self.some_id)

RecycleView:
    viewclass: 'CustomButton'

thick moat Aug 4, 2019, 10:47 AM

#

some_id is a variable then it get passed through some_function

#

@alpine blaze

alpine blaze Aug 4, 2019, 10:50 AM

#

yes

#

and you feed that variable through the data dict

#

just like text

thick moat Aug 4, 2019, 10:53 AM

#

K

#

Thanks

digital rose Aug 4, 2019, 11:24 AM

#

@thick moat I am creating something similar to kivy designer.
A very test version will appear at the end of August on github. I will also make a post in show-your-projects

swift oak Aug 4, 2019, 7:31 PM

#

is this where I get help with tkinter?

rocky dragon Aug 4, 2019, 7:43 PM

#

with tk you probably can also ask in the help channels and get sufficient help

thick moat Aug 5, 2019, 9:30 AM

#

If I want to read something from a file to make each button but want to but it under a recycle view. But how do i get it from a kv file is it id ```kv
<Application>:
GridLayout:
size: root.width, root.height
cols: 2
RecycleView:
viewclass: 'Button'
data: [{'text': 'hello {}'.format(x)} for x in range(500)]
RecycleBoxLayout:
orientation: 'vertical'
size_hint_y: None
height: self.minimum_height
BoxLayout:
orientation: 'vertical'
Button:
text: 'button 1'
Button:
text: 'button 2'
Button:
text: 'button 3'

#

i think tshirtman can help me out with kivy