Add rust demo grid (#571)

* Add rust demo grid

* Update src/Library/demos/Grid/code.rs

Co-authored-by: Hofer-Julian <[email protected]>

* Update src/Library/demos/Grid/code.rs

Co-authored-by: Hofer-Julian <[email protected]>

* Update src/Library/demos/Grid/code.rs

Co-authored-by: Hofer-Julian <[email protected]>

---------

Co-authored-by: Hofer-Julian <[email protected]>

src/Library/demos/Grid/code.rs

@@ -0,0 +1,53 @@
+use crate::workbench;
+use glib::clone;
+use gtk::glib;
+use gtk::prelude::*;
+use rand::Rng;
+use std::cell::Cell;
+use std::rc::Rc;
+
+pub fn main() {
+    let button_ids = [
+        "button00", "button01", "button02", "button10", "button11", "button12", "button20",
+        "button21", "button22",
+    ];
+
+    let step = Rc::new(Cell::new(1));
+    for id in button_ids {
+        let button: gtk::Button = workbench::builder().object(id).unwrap();
+        button.connect_clicked(clone!(@strong step => move |button| {
+            on_clicked(button, step.clone())
+        }));
+    }
+}
+
+fn on_clicked(button: &gtk::Button, step: Rc<Cell<i32>>) {
+    // Check access for user action
+    let image: gtk::Image = button.child().unwrap().downcast().unwrap();
+    if image.icon_name().is_some() {
+        return;
+    }
+    // Store and show user action
+    image.set_icon_name(Some("cross-large-symbolic"));
+    // Calculate pc reaction
+    let mut pc_is_thinking = true;
+    while pc_is_thinking {
+        let random_row: f64 = rand::thread_rng().gen();
+        let random_col: f64 = rand::thread_rng().gen();
+        let pc_is_thinking_row = (random_row * 3.0).floor().to_string();
+        let pc_is_thinking_col = (random_col * 3.0).floor().to_string();
+        let temp: gtk::Button = workbench::builder()
+            .object(format!("button{pc_is_thinking_row}{pc_is_thinking_col}"))
+            .unwrap();
+        let temp_image: gtk::Image = temp.child().unwrap().downcast().unwrap();
+        if temp_image.icon_name().is_none() {
+            // Store and show pc reaction
+            temp_image.set_icon_name(Some("circle-outline-thick-symbolic"));
+            pc_is_thinking = false;
+            step.set(step.get() + 2);
+        }
+        if step.get() >= 8 {
+            pc_is_thinking = false;
+        }
+    }
+}

src/langs/rust/template/Cargo.toml

@@ -7,6 +7,7 @@ edition = "2021"
 
 [dependencies]
 libc = "0.2"
+rand = "0.8.5"
 url = "2.4.0"