library: Ported SpinButton in RUST

src/Library/demos/Spin Button/code.rs

@@ -0,0 +1,41 @@
+use crate::workbench;
+use glib::clone;
+use gtk::glib;
+use gtk::prelude::*;
+use gtk::SpinType::StepForward;
+
+pub fn main() {
+    let hours: gtk::SpinButton = workbench::builder().object("hours").unwrap();
+    let minutes: gtk::SpinButton = workbench::builder().object("minutes").unwrap();
+
+    fn tellTime(hours: &str, minutes: &str) {
+        println!("The time selected is {hours}:{minutes}");
+    }
+
+    hours.connect_value_changed(clone!(@weak minutes => move |hours| {
+        tellTime(&hours.text(), &minutes.text());
+    }));
+
+    hours.connect_output(move |hours| {
+        let value = hours.value();
+        let text = format!("{:02}", value);
+        hours.set_text(&text);
+        return true.into();
+    });
+
+    minutes.connect_output(move |minutes| {
+        let value = minutes.value();
+        let text = format!("{:02}", value);
+        minutes.set_text(&text);
+        return true.into();
+    });
+
+    minutes.connect_wrapped(clone!(@weak hours => move |minutes| {
+      let spin_type: gtk:: SpinType = StepForward;
+      hours.spin(spin_type, 1.0);
+    }));
+
+    minutes.connect_value_changed(move |minutes| {
+        tellTime(&hours.text(), &minutes.text());
+    });
+}