welcome.c

#include <gtk/gtk.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <pwd.h>

#define AUTOSTART_FILE  "acreetionos-welcome.desktop"
#define WINDOW_WIDTH    2280
#define WINDOW_HEIGHT   1770

static char g_autostart_path[512];

static void
build_autostart_path(void)
{
    const char *home = getenv("HOME");
    if (!home) {
        struct passwd *pw = getpwuid(getuid());
        home = pw ? pw->pw_dir : "/root";
    }
    snprintf(g_autostart_path, sizeof(g_autostart_path),
             "%s/.config/autostart/%s", home, AUTOSTART_FILE);
}

static gboolean
autostart_enabled(void)
{
    /* No user override → system /etc/xdg/autostart/ file is in effect → enabled. */
    if (access(g_autostart_path, F_OK) != 0)
        return TRUE;
    FILE *f = fopen(g_autostart_path, "r");
    if (!f)
        return TRUE;
    char line[256];
    gboolean disabled = FALSE;
    while (fgets(line, sizeof(line), f)) {
        if (strstr(line, "Hidden=true") ||
            strstr(line, "X-GNOME-Autostart-enabled=false")) {
            disabled = TRUE;
            break;
        }
    }
    fclose(f);
    return !disabled;
}

static void
set_autostart(gboolean enable)
{
    if (enable) {
        /* Remove user override so the system /etc/xdg/autostart/ entry takes effect. */
        remove(g_autostart_path);
    } else {
        /* Write a user-level Hidden=true entry so Cinnamon ignores the
         * system-wide /etc/xdg/autostart/ file for this user. */
        const char *home = getenv("HOME");
        if (!home) home = "/root";
        char dir[512];
        snprintf(dir, sizeof(dir), "%s/.config/autostart", home);
        mkdir(dir, 0755);
        FILE *f = fopen(g_autostart_path, "w");
        if (f) {
            fprintf(f,
                "[Desktop Entry]\n"
                "Type=Application\n"
                "Name=AcreetionOS Welcome\n"
                "Hidden=true\n"
                "X-GNOME-Autostart-enabled=false\n");
            fclose(f);
        }
    }
}

static void
spawn_cmd(const char *cmd)
{
    pid_t pid = fork();
    if (pid == 0) {
        setsid();
        execl("/bin/sh", "sh", "-c", cmd, NULL);
        _exit(0);
    }
}

static void cb_display(GtkButton *b, gpointer d)    { (void)b; (void)d; spawn_cmd("cinnamon-settings display"); }
static void cb_settings(GtkButton *b, gpointer d)   { (void)b; (void)d; spawn_cmd("cinnamon-settings"); }
static void cb_extensions(GtkButton *b, gpointer d) { (void)b; (void)d; spawn_cmd("cinnamon-settings extensions"); }
static void cb_desklets(GtkButton *b, gpointer d)   { (void)b; (void)d; spawn_cmd("cinnamon-settings desklets"); }

static void
cb_autostart_toggled(GtkToggleButton *btn, gpointer d)
{
    (void)d;
    set_autostart(gtk_toggle_button_get_active(btn));
}

static GtkWidget *
make_tile_button(const char *icon_name, const char *text, GCallback callback)
{
    GtkWidget *btn = gtk_button_new();
    gtk_widget_set_name(btn, "tile-btn");
    gtk_widget_set_size_request(btn, 480, 290);

    GtkWidget *box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 24);
    gtk_widget_set_valign(box, GTK_ALIGN_CENTER);
    gtk_widget_set_halign(box, GTK_ALIGN_CENTER);

    GtkWidget *img = gtk_image_new_from_icon_name(icon_name, GTK_ICON_SIZE_DIALOG);
    gtk_image_set_pixel_size(GTK_IMAGE(img), 108);

    GtkWidget *lbl = gtk_label_new(text);
    gtk_widget_set_name(lbl, "tile-label");
    gtk_label_set_justify(GTK_LABEL(lbl), GTK_JUSTIFY_CENTER);

    gtk_box_pack_start(GTK_BOX(box), img, FALSE, FALSE, 0);
    gtk_box_pack_start(GTK_BOX(box), lbl, FALSE, FALSE, 0);
    gtk_container_add(GTK_CONTAINER(btn), box);

    g_signal_connect(btn, "clicked", callback, NULL);
    return btn;
}

static const char *APP_CSS =
    "window {"
    "  background-color: #1c1c2e;"
    "}"

    "#header {"
    "  background-color: #12122a;"
    "  border-bottom: 6px solid #c0392b;"
    "  padding: 60px 84px;"
    "}"
    "#app-title {"
    "  color: #e74c3c;"
    "  font-size: 84px;"
    "  font-weight: bold;"
    "}"
    "#app-subtitle {"
    "  color: #9098b8;"
    "  font-size: 36px;"
    "  margin-top: 6px;"
    "}"

    "#mission-box {"
    "  padding: 54px 96px 36px 96px;"
    "}"
    "#mission-text {"
    "  color: #c8d0e0;"
    "  font-size: 36px;"
    "}"

    "#section-heading {"
    "  color: #e74c3c;"
    "  font-size: 30px;"
    "  font-weight: bold;"
    "  padding: 12px 96px 30px 96px;"
    "}"

    "#tiles-box {"
    "  padding: 0 96px 54px 96px;"
    "}"

    "button#tile-btn {"
    "  background-image: none;"
    "  background-color: #252540;"
    "  border-radius: 30px;"
    "  border: 3px solid #353565;"
    "  box-shadow: none;"
    "  outline: none;"
    "}"
    "button#tile-btn:hover {"
    "  background-image: none;"
    "  background-color: #c0392b;"
    "  border-color: #e74c3c;"
    "}"
    "button#tile-btn:active {"
    "  background-image: none;"
    "  background-color: #962d22;"
    "}"
    "#tile-label {"
    "  color: #dde2f0;"
    "  font-size: 33px;"
    "  font-weight: bold;"
    "}"

    "#bottom-bar {"
    "  background-color: #12122a;"
    "  border-top: 3px solid #353565;"
    "  padding: 40px 84px;"
    "}"
    "checkbutton#autostart-check {"
    "  color: #c8d0e0;"
    "  font-size: 54px;"
    "  font-weight: bold;"
    "}"
    /* Size the indicator box — do NOT set background-image:none here or the
     * theme loses the ability to draw the tick mark inside the box. */
    "checkbutton#autostart-check check {"
    "  min-width: 60px;"
    "  min-height: 60px;"
    "  border: 3px solid #9098b8;"
    "  border-radius: 8px;"
    "  background-color: #252540;"
    "}"
    "checkbutton#autostart-check check:checked {"
    "  background-color: #e74c3c;"
    "  border-color: #e74c3c;"
    "}";

int
main(int argc, char *argv[])
{
    signal(SIGCHLD, SIG_IGN);

    gtk_init(&argc, &argv);
    build_autostart_path();

    GtkCssProvider *provider = gtk_css_provider_new();
    gtk_css_provider_load_from_data(provider, APP_CSS, -1, NULL);
    gtk_style_context_add_provider_for_screen(
        gdk_screen_get_default(),
        GTK_STYLE_PROVIDER(provider),
        GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);

    /* Window */
    GtkWidget *win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title(GTK_WINDOW(win), "Welcome to AcreetionOS");
    gtk_window_set_default_size(GTK_WINDOW(win), WINDOW_WIDTH, WINDOW_HEIGHT);
    gtk_window_set_resizable(GTK_WINDOW(win), TRUE);
    gtk_window_set_position(GTK_WINDOW(win), GTK_WIN_POS_CENTER);
    gtk_window_set_icon_from_file(GTK_WINDOW(win),
        "/usr/share/pixmaps/acreetionos-welcome.png", NULL);
    g_signal_connect(win, "destroy", G_CALLBACK(gtk_main_quit), NULL);

    GtkWidget *root = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
    gtk_container_add(GTK_CONTAINER(win), root);

    /* ── HEADER ─────────────────────────────────────────────── */
    GtkWidget *header = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 48);
    gtk_widget_set_name(header, "header");

    GtkWidget *logo = gtk_image_new_from_file(
        "/usr/share/pixmaps/acreetionos-welcome.png");
    gtk_widget_set_size_request(logo, 192, 192);

    GtkWidget *title_col = gtk_box_new(GTK_ORIENTATION_VERTICAL, 12);
    gtk_widget_set_valign(title_col, GTK_ALIGN_CENTER);

    GtkWidget *title = gtk_label_new("AcreetionOS");
    gtk_widget_set_name(title, "app-title");
    gtk_label_set_xalign(GTK_LABEL(title), 0.0);

    GtkWidget *subtitle = gtk_label_new("The User-Friendly Arch Linux Distribution");
    gtk_widget_set_name(subtitle, "app-subtitle");
    gtk_label_set_xalign(GTK_LABEL(subtitle), 0.0);

    gtk_box_pack_start(GTK_BOX(title_col), title,    FALSE, FALSE, 0);
    gtk_box_pack_start(GTK_BOX(title_col), subtitle, FALSE, FALSE, 0);
    gtk_box_pack_start(GTK_BOX(header), logo,      FALSE, FALSE, 0);
    gtk_box_pack_start(GTK_BOX(header), title_col, TRUE,  TRUE,  0);
    gtk_box_pack_start(GTK_BOX(root),   header,    FALSE, FALSE, 0);

    /* ── MISSION TEXT ────────────────────────────────────────── */
    GtkWidget *mission_box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
    gtk_widget_set_name(mission_box, "mission-box");

    GtkWidget *mission = gtk_label_new(
        "Welcome to AcreetionOS — a user-friendly, privacy-focused Linux distribution built on Arch Linux.\n\n"
        "Our mission is to bridge the gap between the power and flexibility of Arch and the simplicity\n"
        "that everyday computer users expect. We deliver a solid foundation for both everyday users\n"
        "and developers, with a focus on simplicity, ease of use, and stability — while keeping\n"
        "packages up to date. No telemetry. No tracking. No data collection.\n"
        "Just a stable, pre-configured, beautiful desktop — for everyone.");
    gtk_widget_set_name(mission, "mission-text");
    gtk_label_set_xalign(GTK_LABEL(mission), 0.0);
    gtk_label_set_line_wrap(GTK_LABEL(mission), TRUE);

    gtk_box_pack_start(GTK_BOX(mission_box), mission, FALSE, FALSE, 0);
    gtk_box_pack_start(GTK_BOX(root), mission_box, FALSE, FALSE, 0);

    /* ── SECTION HEADING ─────────────────────────────────────── */
    GtkWidget *section_lbl = gtk_label_new("QUICK SETTINGS");
    gtk_widget_set_name(section_lbl, "section-heading");
    gtk_label_set_xalign(GTK_LABEL(section_lbl), 0.0);
    gtk_box_pack_start(GTK_BOX(root), section_lbl, FALSE, FALSE, 0);

    /* ── TILE BUTTONS (2×2 grid) ─────────────────────────────── */
    GtkWidget *tiles_box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
    gtk_widget_set_name(tiles_box, "tiles-box");

    GtkWidget *grid = gtk_grid_new();
    gtk_grid_set_column_spacing(GTK_GRID(grid), 42);
    gtk_grid_set_row_spacing(GTK_GRID(grid), 42);
    gtk_widget_set_halign(grid, GTK_ALIGN_FILL);
    gtk_widget_set_hexpand(grid, TRUE);

    struct { const char *icon; const char *label; GCallback cb; } tiles[4] = {
        { "preferences-desktop-display", "Display Settings",    G_CALLBACK(cb_display)    },
        { "preferences-system",          "Cinnamon Settings",   G_CALLBACK(cb_settings)   },
        { "application-x-addon",         "Cinnamon Extensions", G_CALLBACK(cb_extensions) },
        { "preferences-desktop",         "Cinnamon Gadgets",    G_CALLBACK(cb_desklets)   },
    };

    for (int i = 0; i < 4; i++) {
        GtkWidget *btn = make_tile_button(tiles[i].icon, tiles[i].label, tiles[i].cb);
        gtk_widget_set_hexpand(btn, TRUE);
        gtk_grid_attach(GTK_GRID(grid), btn, i % 2, i / 2, 1, 1);
    }

    gtk_box_pack_start(GTK_BOX(tiles_box), grid, TRUE, TRUE, 0);
    gtk_box_pack_start(GTK_BOX(root), tiles_box, TRUE, TRUE, 0);

    /* ── BOTTOM BAR (autostart) ──────────────────────────────── */
    GtkWidget *bottom = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
    gtk_widget_set_name(bottom, "bottom-bar");

    GtkWidget *check = gtk_check_button_new_with_label(
        "Launch this welcome screen automatically at login");
    gtk_widget_set_name(check, "autostart-check");
    gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), autostart_enabled());
    g_signal_connect(check, "toggled", G_CALLBACK(cb_autostart_toggled), NULL);

    gtk_box_pack_start(GTK_BOX(bottom), check, FALSE, FALSE, 0);
    gtk_box_pack_end(GTK_BOX(root), bottom, FALSE, FALSE, 0);

    gtk_widget_show_all(win);
    gtk_main();
    return 0;
}