90 lines
2.3 KiB
Rust
90 lines
2.3 KiB
Rust
use gtk::glib::clone;
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use gtk::prelude::{BoxExt, ButtonExt, GtkWindowExt};
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use relm4::{gtk, ComponentParts, ComponentSender, RelmApp, RelmWidgetExt, SimpleComponent};
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#[derive(Debug)]
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enum AppInput {
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Increment,
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Decrement,
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}
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struct AppModel {
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counter: u8,
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}
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struct AppWidgets {
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label: gtk::Label,
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}
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impl SimpleComponent for AppModel {
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type Input = AppInput;
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type Output = ();
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type Init = u8;
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type Root = gtk::Window;
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type Widgets = AppWidgets;
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fn init_root() -> Self::Root {
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gtk::Window::builder()
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.title("Simple App")
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.default_width(300)
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.default_height(100)
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.build()
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}
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fn init(
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counter: Self::Init,
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window: &Self::Root,
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sender: ComponentSender<Self>,
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) -> relm4::ComponentParts<Self> {
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let model = AppModel { counter };
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let vbox = gtk::Box::builder()
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.orientation(gtk::Orientation::Vertical)
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.spacing(5)
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.build();
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let inc_button = gtk::Button::with_label("Increment");
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let dec_button = gtk::Button::with_label("Decrement");
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let label = gtk::Label::new(Some(&format!("Counter: {}", model.counter)));
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label.set_margin_all(5);
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window.set_child(Some(&vbox));
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vbox.set_margin_all(5);
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vbox.append(&inc_button);
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vbox.append(&dec_button);
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vbox.append(&label);
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inc_button.connect_clicked(clone!(@strong sender => move |_| {
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sender.input(AppInput::Increment);
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}));
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dec_button.connect_clicked(clone!(@strong sender => move |_| {
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sender.input(AppInput::Decrement);
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}));
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let widgets = AppWidgets { label };
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ComponentParts { model, widgets }
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}
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fn update(&mut self, message: Self::Input, _sender: ComponentSender<Self>) {
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match message {
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AppInput::Increment => {
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self.counter = self.counter.wrapping_add(1);
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}
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AppInput::Decrement => {
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self.counter = self.counter.wrapping_sub(1);
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}
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}
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}
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fn update_view(&self, widgets: &mut Self::Widgets, _sender: ComponentSender<Self>) {
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widgets.label.set_label(&format!("Counter: {}", self.counter));
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}
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}
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fn main() {
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let app = RelmApp::new("relm4.test.simple_manual");
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app.run::<AppModel>(0);
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}
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