Implement dialog timeout & timeout bar

Makefile

@@ -45,3 +45,9 @@ run: build-dev
 	BSCREENSAVER_DIALOG_GTK3_LOG=$(DEV_LOG_LEVEL) \
 	HELPER_DIR=target/debug \
 	cargo run --bin bscreensaver
+
+run-dialog:
+	RUST_BACKTRACE=1 \
+	BSCREENSAVER_DIALOG_GTK3_LOG=$(DEV_LOG_LEVEL) \
+	BSCREENSAVER_DIALOG_STANDALONE=1 \
+	cargo run --bin bscreensaver-dialog-gtk3

dialog-gtk3/src/main.rs

@@ -4,10 +4,13 @@ use gethostname::gethostname;
 use glib::GString;
 use gtk::{prelude::*, Button, Entry, Label, Plug, Window};
 use log::{debug, error};
-use std::{io::{self, Write}, process::exit, thread};
+use std::{io::{self, Write}, process::exit, rc::Rc, thread, time::Duration};
 
 use bscreensaver_util::init_logging;
 
+const DIALOG_UPDATE_INTERVAL: Duration = Duration::from_millis(100);
+const DIALOG_TIMEOUT: Duration = Duration::from_secs(60);
+
 fn main() -> anyhow::Result<()> {
     init_logging("BSCREENSAVER_DIALOG_GTK3_LOG");
 
@@ -183,14 +186,14 @@ fn main() -> anyhow::Result<()> {
     label_sg.add_widget(&label);
     hbox.pack_start(&label, false, true, 8);
 
-    let password_box = Entry::builder()
+    let password_box = Rc::new(Entry::builder()
         .visibility(false)
         .input_purpose(gtk::InputPurpose::Password)
         .activates_default(true)
         .width_chars(25)
-        .build();
+        .build());
-    entry_sg.add_widget(&password_box);
+    entry_sg.add_widget(&*password_box);
-    hbox.pack_start(&password_box, true, true, 8);
+    hbox.pack_start(&*password_box, true, true, 8);
     password_box.connect_key_press_event(|_, ev| {
         if ev.keyval().name() == Some(GString::from("Escape")) {
             exit(1);
@@ -208,25 +211,59 @@ fn main() -> anyhow::Result<()> {
     let button = Button::builder()
         .label("Unlock")
         .build();
-    button.connect_clicked(move |button| {
+    {
-        button.set_sensitive(false);
+        let password_box = Rc::clone(&password_box);
-        password_box.set_sensitive(false);
+        button.connect_clicked(move |button| {
+            button.set_sensitive(false);
+            password_box.set_sensitive(false);
 
-        let username = username.clone();
+            let username = username.clone();
-        let password = password_box.text().to_string();
+            let password = password_box.text().to_string();
-        
+
-        thread::spawn(move || {
+            thread::spawn(move || {
-            if authenticate(&username, &password) {
+                if authenticate(&username, &password) {
-                exit(0);
+                    exit(0);
-            } else {
+                } else {
-                exit(-1);
+                    exit(-1);
-            }
+                }
+            });
         });
-    });
+    }
     hbox.pack_end(&button, false, true, 8);
     button.set_can_default(true);
     button.set_has_default(true);
 
+    let timer = Rc::new(gtk::ProgressBar::builder()
+        .orientation(gtk::Orientation::Horizontal)
+        .fraction(1.0)
+        .show_text(false)
+        .can_focus(false)
+        .margin(2)
+        .build());
+    top_vbox.pack_end(&*timer, false, false, 0);
+
+    {
+        let timer = Rc::clone(&timer);
+        let delta = (DIALOG_UPDATE_INTERVAL.as_millis() as f64) / (DIALOG_TIMEOUT.as_millis() as f64);
+        gtk::glib::source::timeout_add_local(DIALOG_UPDATE_INTERVAL, move || {
+            let new_fraction = timer.fraction() - delta;
+            if new_fraction <= 0.0 {
+                exit(1);
+            }
+            timer.set_fraction(new_fraction);
+            Continue(true)
+        });
+    }
+
+    {
+        let timer = Rc::clone(&timer);
+        password_box.connect_key_press_event(move |_, _| {
+            let new_fraction = timer.fraction() + 0.05;
+            timer.set_fraction(if new_fraction >= 1.0 { 1.0 } else { new_fraction });
+            Inhibit(false)
+        });
+    }
+
     dialog.show_all();
 
     gtk::main();