Create and/or Publish Complex Example Applications

[potocpav]

Present these applications front-and-center on the homepage. Right now, the homepage contains just trivial usage examples, which really doesn't look too good. Could be inspired by the Streamlit homepage.

Contributions welcome.

[sla-te]

Ive actually been trying to build my application with concur for a while (currently using PySimpleGUI) , I would be willing to display it if you help me with some very basic things.

For instance I got this snippet:

import concur as c


def test():
	print("Orange")

def app():
	while True:
		key, event = yield from c.orr([
			c.button("test"),
			c.button(f"Banana"),

		])

		if key == "test":
			test()
		print("Clicked:", event)
		yield


c.main(app())

Now I would like to make test() open another window with some more buttons, how could I do that?

[potocpav]

Hi, sorry for the delay in answering.

The most straightforward way to achieve this is using a state variable for whether the window is open.

import concur as c

def test():
    return c.window("Window", c.orr([
        c.button("test-window"),
        c.button("Banana-window"),
        c.button("Close"),
        ]))

def app():
    window_open = False
    while True:
        key, event = yield from c.orr([
            c.button("Toggle window"),
            test() if window_open else c.nothing(),
        ])

        if key == "Toggle window":
            window_open = not window_open
        elif key == "Close":
            window_open = False

        print("Clicked:", key)
        yield

c.main(app())

I hope this is what you were looking for. Feel free to ask some more. I should be able to answer faster in the future :)

Edit: added a close button to the window.

[potocpav]

It would be great if you could share your application! I will be glad to review the code and/or help you with using Concur.

[sla-te]

Thanks for the snippet! Its almost what I am looking for, What I would need though is a "main" Gui which has some buttons, then if I click one of the buttons it will open another separate window, like starting a new feature. It shouldnt all be inside a "wrapper window" though but all free floating separate windows. As for the application I need some time to prepare it but we can share the whole gui part when its prepared.

[potocpav]

I haven't really used multiple separate OS windows. ImGui supports this use-case, see this issue. The video in the first comment may show what you want.

However, Concur doesn't support this ATM. I don't know how difficult would it be to implement, and how much would it complicate things. There may (or may not) be some subtleties with window position remembering, working on all platforms, etc.

If all you need is a file open/save dialog, then use wxPython.

While there are valid use-cases for multiple windows, a single window may be better from user's perspective. Gimp before 2.8 used multiple OS windows, and it wasn't really working too well. Blender is a complex single-window application with flexible docking. And web-based applications don't support multiple windows either.

[sla-te]

Its indeed the use case I am looking for though. It it worked on Windows that would be perfectly sufficient. Window positioning remembering would not be a big issue as well. Do you think you could throw out a quick and dirty solution for it?

[sla-te]

	key = yield from c.orr([

			c.main_menu_bar(widget=c.orr([
				c.menu(label="File", widget=c.orr([
					c.menu_item("New", "Ctrl+N"),
					c.menu_item("Open...", "Ctrl+O"),
					c.separator(),
					c.menu_item("Quit", "Ctrl+Q"),
				])),
			])),

			c.key_press("Quit", ord('Q'), ctrl=True),
			c.button("Banana"),
			c.button("Toggle window"),
			test() if window_open else c.nothing(),
		])

So this doesnt seem to drop any warning but if i do it like this:

	key, event = yield from c.orr([

			c.main_menu_bar(widget=c.orr([
				c.menu(label="File", widget=c.orr([
					c.menu_item("New", "Ctrl+N"),
					c.menu_item("Open...", "Ctrl+O"),
					c.separator(),
					c.menu_item("Quit", "Ctrl+Q"),
				])),
			])),

			c.key_press("Quit", ord('Q'), ctrl=True),
			c.button("Banana"),
			c.button("Toggle window"),
			test() if window_open else c.nothing(),
		])

The ide will mark it all in yellow and say "need more values to unpack", how do I manage that?

[potocpav]

I don't see a difference between those two snippets. Did you accidentally copy the same thing twice?

[sla-te]

My bad, copy paste error, check now

[potocpav]

It runs fine when I try it. Is it possible that the analysis done by IDE is incorrect? What IDE do you use, and how does it analyze the code?

It's also possible that the type annotations in core.py are buggy, removing them may work. I will remove them in master if it fixes the issue.

It may be possible to get rid of the warning by some reformatting, such as

ret = yield from ...
key, event = ret[0], ret[1]

but that's definitely quite ugly.

[sla-te]

yeah, thats what i tried too,, then you get this one:

:D