Create skeleton of main activities view UI in client

client/meson.build

@@ -9,6 +9,14 @@ project(
 add_project_arguments('-w', language: 'c')
 
 gtk_dep = dependency('gtk4')
+gnome = import('gnome')
+
+resources = gnome.compile_resources(
+  'resources',
+  'resources.gresource.xml',
+  source_dir: '.',
+  c_name: 'resources'
+)
 
 subdir('src')
 subdir('tests')

client/resources.gresource.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+  <gresource prefix="/sh/wip/studysystemclient">
+    <file>styles.css</file>
+  </gresource>
+</gresources>

client/src/activities_view.vala

@@ -0,0 +1,86 @@
+namespace StudySystemClient {
+	private struct Activity {
+		public string subject;
+		public ActivityType type;
+	}
+
+	enum ActivityType {
+		EXERCISES,
+		READING;
+
+		public string to_string() {
+			switch (this) {
+			case EXERCISES:
+				return "Exercises";
+			case READING:
+				return "Reading";
+			default:
+				return "Invalid activity type";
+			}
+		}
+	}
+
+	public class ActivitiesView : Gtk.Box {
+		public ActivitiesView()  {
+			margin_top = margin_bottom = margin_start = margin_end = 0;
+
+			var scrolled_window = new Gtk.ScrolledWindow();
+			scrolled_window.hscrollbar_policy = Gtk.PolicyType.NEVER;
+			scrolled_window.vexpand = true;
+
+			var card_container = new Gtk.FlowBox();
+			card_container.homogeneous = true;
+			card_container.min_children_per_line = 1;
+			card_container.max_children_per_line = 1;
+			card_container.selection_mode = Gtk.SelectionMode.NONE;
+			card_container.valign = Gtk.Align.START;
+			scrolled_window.add_css_class("card-container");
+
+			var activities = new Activity[] {
+				{ "Linguistics", ActivityType.EXERCISES },
+				{ "Cybernetics", ActivityType.EXERCISES },
+				{ "Linguistics", ActivityType.READING },
+				{ "Physics", ActivityType.READING },
+				{ "Cybernetics", ActivityType.READING },
+				{ "Physics", ActivityType.EXERCISES },
+			};
+			foreach (var activity in activities)
+				card_container.append(new ActivityCard(activity));
+
+			scrolled_window.set_child(card_container);
+			this.append(scrolled_window);
+		}
+	}
+
+	private class ActivityCard : Gtk.Frame {
+		public ActivityCard(Activity activity) {
+			add_css_class("card");
+
+			var content = new Gtk.Box(Gtk.Orientation.HORIZONTAL, 12);
+
+			var text = new Gtk.Box(Gtk.Orientation.VERTICAL, 6);
+			text.hexpand = true;
+
+			var subject = new Gtk.Label(activity.subject);
+			subject.halign = Gtk.Align.START;
+			subject.add_css_class("activity-subject");
+			text.append(subject);
+
+			var type = new Gtk.Label(activity.type.to_string());
+			type.halign = Gtk.Align.START;
+			text.append(type);
+
+			content.append(text);
+
+			var button
+				= new Gtk.Button.from_icon_name("appointment-new-symbolic");
+			button.vexpand = false;
+			button.valign = Gtk.Align.CENTER;
+			button.set_tooltip_text("Log session");
+			button.add_css_class("log-session-button");
+			content.append(button);
+
+			set_child(content);
+		}
+	}
+}

client/src/main.vala

@@ -1,5 +1,3 @@
-using Gtk;
-
 namespace StudySystemClient {
 	public class App : Gtk.Application {
 		public App() {
@@ -8,11 +6,18 @@ namespace StudySystemClient {
 
 		protected override void activate() {
 			try {
-				var connection = new Connection(Config.CERT_DIR);
-				new MainWindow(this, connection);
+				var css_provider = new Gtk.CssProvider();
+				css_provider.load_from_resource(
+					"/sh/wip/studysystemclient/styles.css");
+				Gtk.StyleContext.add_provider_for_display(
+					Gdk.Display.get_default(),
+					css_provider,
+					Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
+
+				new MainWindow(this, new Connection(Config.CERT_DIR));
 			} catch (Error e) {
-				stderr.printf("Failed to initialize connection: %s\n",
-							  e.message);
+				stderr.printf("Failed to initialize: %s\n", e.message);
+				return;
 			}
 		}
 	}

client/src/main_window.vala

@@ -1,10 +1,6 @@
 namespace StudySystemClient {
-	const string title = "Study System Client";
-
 	public class MainWindow : Gtk.ApplicationWindow {
 		private Connection connection;
-		private Gtk.Button send_button;
-		private Gtk.Label response_label;
 
 		public MainWindow(Gtk.Application app, Connection connection) {
 			Object(application: app);
@@ -13,30 +9,15 @@ namespace StudySystemClient {
 			default_height = 580;
 
 			this.connection = connection;
-			connection.received.connect((msg) => {
-					var der = Der.decode(msg) as Der.Choice;
-					var str = der.value as Der.Utf8String;
-					response_label.label = "Response: " + str.value;
-				});
 
-			var box = new Gtk.Box(Gtk.Orientation.VERTICAL, 10);
-			box.margin_start = 10;
-			box.margin_end = 10;
-			box.margin_top = 10;
-			box.margin_bottom = 10;
+			var header_bar = new Gtk.HeaderBar();
+			var title = new Gtk.Label("Study System Client");
+			title.add_css_class("title");
+			header_bar.title_widget = title;
+			set_titlebar(header_bar);
 
-			send_button = new Gtk.Button.with_label("Send");
-			send_button.clicked.connect(() => {
-					var msg = new Der.Choice(0, new Der.Null());
-					connection.send(msg.encode());
-				});
-			box.append(send_button);
-
-			response_label = new Gtk.Label("");
-			response_label.wrap = true;
-			box.append(response_label);
-
-			set_child(box);
+			var activities_view = new ActivitiesView();
+			set_child(activities_view);
 
 			present();
 		}

client/src/meson.build

@@ -10,12 +10,14 @@ configure_file(
 lib = library(
   'study-system-client',
   sources: files(
+    'activities_view.vala',
     'connection.vala',
     'der.vala',
     'main_window.vala',
-  ),
+  ) + resources,
   dependencies: [gtk_dep],
-  vala_vapi: 'study-system-client.vapi'
+  vala_vapi: 'study-system-client.vapi',
+  vala_args: ['--pkg', 'gtk4']
 )
 lib_dep = declare_dependency(
   link_with: lib,

client/styles.css

@@ -0,0 +1,25 @@
+.card-container {
+	background-color: mix(@theme_base_color, @theme_bg_color, 0.7);
+	padding: 6px;
+}
+
+.card {
+	border: 1px solid alpha(@theme_fg_color, 0.2);
+	box-shadow: 0 1px 2px alpha(black, 0.15);
+	background-color: @theme_bg_color;
+	padding: 12px 16px;
+}
+
+.activity-subject {
+	font-weight: bold;
+}
+
+/*
+ * The visual center (i.e. the center of the clock) of the
+ * "appointment-new-symbolic" icon is slightly displaced from the
+ * center of the actual image, so tweak it here.
+ */
+.log-session-button image {
+	margin-top: -2px;
+	margin-left: 3px;
+}