relm/Lobby

relm is an idiomatic GUI library for Rust based on GTK+

antoyo

@antoyo

Yes. That's one way of doing it: https://github.com/antoyo/relm/blob/master/relm-examples/tests/communication-attribute.rs#L173 . Here's how you would do the same without the #[widget] attribute: https://github.com/antoyo/relm/blob/f580d4597704d6d1e8d3654f1544851159b7cec8/relm-examples/tests/communication.rs#L182 . A more manual way is here:

https://github.com/antoyo/relm/blob/f580d4597704d6d1e8d3654f1544851159b7cec8/relm-examples/tests/checkboxes.rs#L156 (sorry, this is using an non-release that broke the API, but you just need to call emit() on the component). The first two only bind a message to send another message.

laurent bernabé

@loloof64

Thank you very much :smiley: I'm gonna investigate into these links :smiley:

Indeed, I forgot the connect! macro :laughing:

antoyo

@antoyo

Yeah, this macro supports many different syntaxes.

laurent bernabé

@loloof64

Hi! I'm facing an issue with the view! macro :

 view! {
        gtk::ScrolledWindow(None::<&gtk::Adjustment>, None::<&gtk::Adjustment>) {
            policy: PolicyType::Automatic, PolicyType::Automatic,
            #[name="main_zone"]
            gtk::FlowBox {

            }
        }
    }

I'm trying to set up the policy for ScrolledWindow, but

error: expected curly braces
  --> src/graphic/history_component.rs:28:65
      |
28 |             policy: PolicyType::Automatic, PolicyType::Automatic,
      |

But adding curly braces after this line 28 also raises errors.

I've just tried to follow official documentation for ScrolledWindowExt : https://gtk-rs.org/docs/gtk/trait.ScrolledWindowExt.html#tymethod.set_policy.

I've also tried with a tuple (PolicyType::Automatic, PolicyType::Automatic)

laurent bernabé

@loloof64

Finally, set the policy manually :

fn init_view(&mut self) {
        self.root.set_policy(PolicyType::Automatic, PolicyType::Automatic);
    }

But would also be interested if this could be done directly in the view! macro call.

antoyo

@antoyo

@loloof64: Relm doesn't support setting multi-argument properties for now: antoyo/relm#59 . In this link, you see the workaround of using hscroll_policy and vscroll_policy for your use case.

laurent bernabé

@loloof64

Thank you, indeed, I could have found these simpliest versions from the Gtk-rs documentation. It is because I am not yet used to Gtk development.

laurent bernabé

@loloof64

Finally wrote back manual setting from init function, as ScrolledWindowExt does not support set_hscroll_policy, and same for set_vscroll_policy.

antoyo

@antoyo

It might actually be this one instead: http://gtk-rs.org/docs/gtk/trait.ScrolledWindowExt.html#tymethod.set_property_hscrollbar_policy

laurent bernabé

@loloof64

Thank you : I'll look at it right now. :smiley: Also, is there a way to specify the pack_start, pack_end from the view! macro ? As I am trying to set a Ground and a ScrolledWindow side by side (horizontally), but the Ground is always centered in my game zone, and the ScrolledWindow has little room.

antoyo

@antoyo

What do you mean? The order in which you add the element in the macro will be the order in the Box. You can try setting hexpand if I understand correctly.

laurent bernabé

@loloof64

So, I think this has to do with hexpand : I'll play with this. Found this : https://gtk-rs.org/docs/gtk/trait.WidgetExt.html#tymethod.set_hexpand. Allright.

laurent bernabé

@loloof64

I am trying to set style on my custom component with a css file :

fn init_view(&mut self) {
        let style = include_bytes!("./game_zone.css");
        let provider = CssProvider::new();
        provider
            .load_from_data(style)
            .expect("Failed to read css style for GameZone !");
        self.history
            .get_style_context()
            .add_provider(&provider, STYLE_PROVIDER_PRIORITY_APPLICATION);
    }

But my custom history component has no method get_style_context()

antoyo

@antoyo

Try self.history.widget().get_style_context().

laurent bernabé

@loloof64

Thank you :smile:

oofdog

@oofdog

hey, are you familiar with https://github.com/bodil/vgtk

antoyo

@antoyo

@oofdog: I've heard of it, but never used it.

oofdog

@oofdog

yeah cuz they're the same

inspired by elm

antoyo

@antoyo

Yeah, they use a slightly different approach.

oofdog

@oofdog

yeah, not much different though

oofdog

@oofdog

any interest in joining the two projects?

duplication of effort : /

antoyo

@antoyo

I don't really like their approach and since vgtk appeared after relm, I guess they had good reasons to start a different project.

oofdog

@oofdog

i notice in vgtk you can do this

<ListBox selection_mode=SelectionMode::None>
        {
            self.tasks.iter().enumerate().map(|(index, task)| task.render(index))
        }
    </ListBox>

is there a similar way to render a list of items and map them to a component

(in relm)

antoyo

@antoyo

No, not yet.

oofdog

@oofdog

hm ok.

so how can we render a list of items in relm?

antoyo

@antoyo

This example shows how you can do that: https://github.com/antoyo/relm/blob/master/relm-examples/examples/widget-list.rs#L115

oofdog

@oofdog

thanks

oofdog

@oofdog

hey, is there any examples on how to use a combobox

seems like i have to use a list store i think, the same model that treeview uses

antoyo

@antoyo

@oofdog: I can't find any.

oofdog

@oofdog

hm ok

i found this comment https://github.com/antoyo/relm/issues/136#issuecomment-431518843

antoyo

@antoyo

Yep, you have to do it the gtk-rs way, unfortunately.

oofdog

@oofdog

i'm gonna try that

oofdog

@oofdog

yup that worked. thanks.

btw what if the model changed? like if i add another option asynchronously? will the view update automatically?

antoyo

@antoyo

You'll have to call set_model() manually.

oofdog

@oofdog

oofdog

@oofdog

i saw your mg framework. looks nice. still alpha? what problems does it solve?

antoyo

@antoyo

@oofdog: mg is something like girara (https://pwmt.org/projects/girara/): it basically gives you vim-like functionality (key bindings, modes, commands, settings, …). Where does it say it's in alpha? mg is the library used by my web browser titanium. It's fairly stable, though I believe I introduce a bug in the last version.

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