Feature/keyboard handling

[dmweis]

Hey!
I am using Iced for a small applicaiton and I wanted to add the abaility to exit by pressing Escape.
But it seems that there isn't a straight forward way to subscribe to keyboard events as far as I can tell.

There is a way to do it in PaneGrids but the handling is a bit more complicated and it seems you can't handle different combinations of moddifiers (For example handle ctrl + d differently from alt + d)

I've implemented a small keyboard handler for container and I updated the stopwatch exmaple to show it I would use this.
If this is something you like, I'd be interested in extending it to other widgets or including mouse events.

Also Iced is really cool!

[dmweis]

Hmmm. I just found out that I could have solved this using a subscription.
It doesn't offer the abaility to bubble events as far as I can tell. But it would be enough for my needs

[hecrj]

Thanks!

I think we need to be careful with adding too much functionality to simple widgets. In this case, I believe a better approach would be to create a new widget extending a Container by using composition.

But as you mention, using a Subscription is the recommended way to go until some kind of event capturing/bubbling lands. It is not completely clear yet how this feature will shape up. Therefore, we should probably wait until then before introducing more logic that could conflict with it.

There are a bunch of related issues and discussions that we should keep in mind:

• Trying to integrate with Kiss3d
• Layers
• How to integrate input events with existing engine, and use iced as ui library? #408
• [idea] iced_native: Add methods to tell if UI should capture events to help with integration #455