scrolled_text.vala added

vala/gtk_textview_scroll/scrolled_text.vala

@@ -0,0 +1,46 @@
+using Gtk;
+
+public class ScrolledText : Window {
+	private TextView text_view;
+	private ScrolledWindow scroll;
+
+	public ScrolledText () {
+		this.title = "Просмотр текстового файла";
+		this.window_position = WindowPosition.CENTER;
+		this.set_default_size( 500, 400 );
+
+		var toolbar = new Toolbar();
+
+		var open_button = new ToolButton.from_stock( Stock.OPEN );
+		toolbar.add( open_button );
+		open_button.clicked.connect( on_open_clicked );
+
+		this.text_view = new TextView();
+		for (var i = 0; i < 100; ++i) text_view.buffer.text += @"line № $i\n";
+		this.text_view.cursor_visible = false;
+
+		scroll = new ScrolledWindow( null, null );
+		scroll.set_policy( PolicyType.AUTOMATIC, PolicyType.AUTOMATIC );
+		scroll.add( this.text_view );
+
+		var vbox = new VBox( false, 0 );
+		vbox.pack_start( toolbar, false, true, 0 );
+		vbox.pack_start( scroll, true, true, 0 );
+		this.add( vbox );
+	}
+
+	private void on_open_clicked() {
+		var vadjustment = scroll.get_vadjustment ();
+		vadjustment.value = vadjustment.upper;
+		scroll.set_vadjustment (vadjustment);
+	}
+
+	public static int main (string[] args) {
+		Gtk.init( ref args );
+		var window = new ScrolledText();
+		window.destroy.connect( Gtk.main_quit );
+		window.show_all();
+		Gtk.main();
+		return 0;
+	}
+}