apps: Add clock

apps/CMakeLists.txt

@@ -47,3 +47,5 @@ luna_app(taskbar.cpp taskbar)
 target_link_libraries(taskbar PUBLIC ui)
 luna_app(2048.cpp 2048)
 target_link_libraries(2048 PUBLIC ui)
+luna_app(clock.cpp clock)
+target_link_libraries(clock PUBLIC ui)

apps/clock.cpp

@@ -0,0 +1,40 @@
+#include <time.h>
+#include <ui/App.h>
+#include <ui/Label.h>
+
+ui::Label* g_label;
+
+void update_time()
+{
+    time_t t = time(NULL);
+    struct tm* tp = localtime(&t);
+
+    static char buf[2048];
+    strftime(buf, sizeof(buf), "%H:%M:%S", tp);
+
+    g_label->set_text(StringView { buf });
+
+    os::EventLoop::the().register_timer(1, update_time);
+
+    ui::App::the().main_window()->draw();
+}
+
+Result<int> luna_main(int argc, char** argv)
+{
+    ui::App app;
+    TRY(app.init(argc, argv));
+
+    auto* window = TRY(ui::Window::create(ui::Rect { 500, 400, 100, 50 }));
+    app.set_main_window(window);
+
+    window->set_title("Clock");
+    window->set_background(ui::GRAY);
+
+    g_label = TRY(make<ui::Label>("00:00:00", ui::BLACK, ui::VerticalAlignment::Center, ui::HorizontalAlignment::Center,
+                                  ui::Font::default_bold_font()));
+    window->set_main_widget(*g_label);
+
+    update_time();
+
+    return app.run();
+}

apps/taskbar.cpp

@@ -62,6 +62,9 @@ Result<int> luna_main(int argc, char** argv)
     StringView gol_command[] = { "/usr/bin/gol" };
     TRY(create_widget_group_for_app(layout, { gol_command, 1 }, "/usr/share/icons/32x32/app-gol.tga"));
 
+    StringView clock_command[] = { "/usr/bin/clock" };
+    TRY(create_widget_group_for_app(layout, { clock_command, 1 }, "/usr/share/icons/32x32/app-clock.tga"));
+
     window->draw();
 
     return app.run();