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In my blog, I delve into the world of programming web technologies, Linux, Unix-like, and graphic design using free tools on Linux.

Sunday, September 21, 2025

LibAdwaita Ubuntu App

Libadwaita is a library designed for creating modern user interfaces in applications that use the GNOME desktop environment. It is part of the GNOME ecosystem and is built on top of GTK (GIMP Toolkit), which is the primary toolkit for creating graphical user interfaces in GNOME applications.

Install Libs

sudo apt install libadwaita-1-dev libgtk-4-dev build-essential

Code

#include <gtk/gtk.h>
#include <adwaita.h>

static void
on_window_close_request(GtkWindow *window,
                       gpointer   user_data)
{
    g_application_quit(G_APPLICATION(user_data));
}

static void
activate (GtkApplication *app,
          gpointer        user_data)
{
    adw_init();

    GtkWidget *window = adw_application_window_new(app);
    gtk_window_set_title(GTK_WINDOW(window), "Hello, World!");
    gtk_window_set_default_size(GTK_WINDOW(window), 400, 300);
    g_signal_connect(window, "close-request", G_CALLBACK(on_window_close_request), app);

    // Create toolbar view
    GtkWidget *toolbar_view = adw_toolbar_view_new();
    
    // Create header bar
    GtkWidget *header_bar = adw_header_bar_new();
    adw_header_bar_set_title_widget(ADW_HEADER_BAR(header_bar), gtk_label_new("Hello, World!"));
    adw_toolbar_view_add_top_bar(ADW_TOOLBAR_VIEW(toolbar_view), header_bar);

    // Create content
    GtkWidget *content = gtk_box_new(GTK_ORIENTATION_VERTICAL, 12);
    gtk_widget_set_margin_top(content, 12);
    gtk_widget_set_margin_bottom(content, 12);
    gtk_widget_set_margin_start(content, 12);
    gtk_widget_set_margin_end(content, 12);
    
    GtkWidget *label = gtk_label_new("Hello, World!");
    gtk_widget_set_halign(label, GTK_ALIGN_CENTER);
    gtk_widget_set_valign(label, GTK_ALIGN_CENTER);
    gtk_box_append(GTK_BOX(content), label);

    adw_toolbar_view_set_content(ADW_TOOLBAR_VIEW(toolbar_view), content);
    adw_application_window_set_content(ADW_APPLICATION_WINDOW(window), toolbar_view);

    gtk_window_present(GTK_WINDOW(window));
}

int main(int argc, char *argv[])
{
    AdwApplication *app = adw_application_new("com.example.HelloAdwaita", G_APPLICATION_DEFAULT_FLAGS);
    g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
    int status = g_application_run(G_APPLICATION(app), argc, argv);
    g_object_unref(app);
    return status;
}

Compile

gcc one.c -o one `pkg-config --cflags --libs gtk4 libadwaita-1`

posted by damirs @ September 21, 2025