- This works differently to MS Paint. Instead of a color for clearing
(and for the inside of shapes) and a color for brushing (and the
outline of shapes), here there's a background and text color for each
cell, collectively treated like the foreground color in MS Paint.
- There's no way to select a foreground color yet other than opening
an image and using the color picker.
Don't dim the highlight sides on hover. I feel like that makes it feel
like it's disabled. But don't dim the center as much, so the highlight
doesn't _stand out_ when hovering.
Sure, I'm tacking on these properties, but it's better to tack onto
objects than to tack onto strings. I'm not using a type checker yet,
but this is a better situation for type checking. (I could extend Button
with mini classes within ToolsBox and ColorsBox, if need be, to give
clear ownership of these properties.)
I added the filename = os.path.join(...) which invalidated the positive
filename check. I could move the check earlier, but a negative check
should do nicely.
This commit is mostly a dedent, though git may display the diff poorly
due to the shared line window.close()
I've settled on underscores, for now at least.
Generally I use hyphens.
Built-ins actually use hyphens, like `.-dark-mode`.
Maybe I should be using hyphens.
But for now, consistency is what's important, and I'm using underscores.
Now it's really verbose, but I don't have to worry about reusing
the same name twice. Or coming up with new, fun ones.
https://docs.python.org/3/library/asyncio-task.html#asyncio.create_task
> Important: Save a reference to the result of this function, to avoid a task disappearing mid-execution. The event loop only keeps weak references to tasks. A task that isn’t referenced elsewhere may get garbage collected at any time, even before it’s done. For reliable “fire-and-forget” background tasks, gather them in a collection:
>
> background_tasks = set()
>
> for i in range(10):
> task = asyncio.create_task(some_coro(param=i))
>
> # Add task to the set. This creates a strong reference.
> background_tasks.add(task)
>
> # To prevent keeping references to finished tasks forever,
> # make each task remove its own reference from the set after
> # completion:
> task.add_done_callback(background_tasks.discard)
