First commit. Version 0.1.0

examples/inputs.rs

@@ -0,0 +1,128 @@
+//! `cargo run --example inputs`
+//!
+//! Shows a plain username field and a secure password field with a
+//! built-in show / hide-password eye toggle. Tap the eye to flip
+//! the bullets ↔ plaintext rendering — the buffer keeps its
+//! wipe-on-drop guarantee either way. Tab / Shift+Tab moves focus
+//! between fields. Enter or the Login button submits. Esc exits.
+//!
+//! NOTE: ltk is a Wayland layer-shell toolkit. This example requires a running
+//! Wayland compositor (e.g. sway, labwc, or a full desktop session).
+
+use ltk::{ App, Element, Keysym, ButtonVariant, button, column, text, text_edit, spacer };
+
+// ── Messages ──────────────────────────────────────────────────────────────────
+
+#[ derive( Clone ) ]
+enum Message
+{
+	UsernameChanged( String ),
+	PasswordChanged( String ),
+	TogglePasswordVisibility,
+	Submit,
+}
+
+// ── App state ─────────────────────────────────────────────────────────────────
+
+struct InputsApp
+{
+	username:         String,
+	password:         String,
+	password_visible: bool,
+	submitted:        bool,
+}
+
+impl InputsApp
+{
+	fn new() -> Self
+	{
+		Self
+		{
+			username:         String::new(),
+			password:         String::new(),
+			password_visible: false,
+			submitted:        false,
+		}
+	}
+}
+
+// ── App trait ─────────────────────────────────────────────────────────────────
+
+impl App for InputsApp
+{
+	type Message = Message;
+
+	fn view( &self ) -> Element<Message>
+	{
+		let palette   = ltk::theme_palette();
+		let primary   = palette.text_primary;
+		let secondary = palette.text_secondary;
+
+		let status = if self.submitted
+		{
+			format!( "Submitted as: {}", self.username )
+		} else {
+			String::from( "Fill in the fields and press Login" )
+		};
+
+		column::<Message>()
+			.padding( 32.0 )
+			.spacing( 16.0 )
+			.max_width( 380.0 )
+			.center_y( true )
+			.push( text( "ltk — text input showcase" ).size( 24.0 ).color( primary ).align_center() )
+			.push( text( status ).size( 14.0 ).color( secondary ).align_center() )
+			.push( spacer() )
+			.push(
+				text_edit::<Message>( "Username", &self.username )
+					.on_change( Message::UsernameChanged )
+					.on_submit( Message::Submit ),
+			)
+			.push(
+				text_edit::<Message>( "Password", &self.password )
+					.on_change( Message::PasswordChanged )
+					.on_submit( Message::Submit )
+					.password_toggle( self.password_visible, Message::TogglePasswordVisibility ),
+			)
+			.push(
+				button::<Message>( "Login" )
+					.variant( ButtonVariant::Primary )
+					.on_press( Message::Submit ),
+			)
+			.push( spacer() )
+			.push(
+				text( "Tab = next field  ·  Enter = submit  ·  Esc = quit" )
+					.size( 12.0 )
+					.color( secondary )
+					.align_center(),
+			)
+			.into()
+	}
+
+	fn update( &mut self, msg: Message )
+	{
+		match msg
+		{
+			Message::UsernameChanged( v )      => self.username = v,
+			Message::PasswordChanged( v )      => self.password = v,
+			Message::TogglePasswordVisibility  => self.password_visible = !self.password_visible,
+			Message::Submit                    => self.submitted = true,
+		}
+	}
+
+	fn on_key( &mut self, keysym: Keysym ) -> Option<Message>
+	{
+		if keysym == Keysym::Escape
+		{
+			std::process::exit( 0 );
+		}
+		None
+	}
+}
+
+// ── Entry point ───────────────────────────────────────────────────────────────
+
+fn main()
+{
+	ltk::run( InputsApp::new() );
+}