MODULE test_utility ;

(*
   m2-GTK4 test - small utility/feedback widgets: GtkAdjustment,
   GtkProgressBar, GtkSpinner, GtkSeparator and GtkImage.
   Requires a display.
*)

FROM Gio IMPORT g_application_run, g_application_quit;
FROM GtkApplication IMPORT gtk_application_new;
FROM GtkWindow IMPORT gtk_application_window_new, gtk_window_set_child;
FROM GtkBox IMPORT gtk_box_new, gtk_box_append;
FROM GtkEnums IMPORT GtkVertical, GtkHorizontal;
FROM GtkAdjustment IMPORT gtk_adjustment_new, gtk_adjustment_get_value,
   gtk_adjustment_set_value, gtk_adjustment_get_lower, gtk_adjustment_get_upper,
   gtk_adjustment_set_upper, gtk_adjustment_get_step_increment,
   gtk_adjustment_get_page_increment, gtk_adjustment_get_page_size,
   gtk_adjustment_clamp_page;
FROM GtkProgressBar IMPORT gtk_progress_bar_new, gtk_progress_bar_set_fraction,
   gtk_progress_bar_get_fraction, gtk_progress_bar_set_show_text,
   gtk_progress_bar_get_show_text, gtk_progress_bar_set_text,
   gtk_progress_bar_get_text, gtk_progress_bar_pulse;
FROM GtkSpinner IMPORT gtk_spinner_new, gtk_spinner_start, gtk_spinner_stop,
   gtk_spinner_set_spinning, gtk_spinner_get_spinning;
FROM GtkSeparator IMPORT gtk_separator_new;
FROM GtkImage IMPORT gtk_image_new_from_icon_name, gtk_image_get_icon_name;
FROM GtkUtils IMPORT Connect, CStrToM2;
FROM SYSTEM IMPORT ADDRESS, ADR;
FROM libc IMPORT printf;

CONST
   AppId = "org.example.m2gtk4.TestUtility";

VAR
   app: ADDRESS;
   passed: BOOLEAN;

PROCEDURE OnActivate (application: ADDRESS; data: ADDRESS);
VAR
   window, box, adj, pbar, spinner, sep, image: ADDRESS;
   buf: ARRAY [0..63] OF CHAR;
   ok: BOOLEAN;
BEGIN
   ok := TRUE;

   (* --- GtkAdjustment --- *)
   adj := gtk_adjustment_new(5.0, 0.0, 100.0, 1.0, 10.0, 20.0);
   IF ABS(gtk_adjustment_get_value(adj) - 5.0) > 0.001 THEN ok := FALSE END;
   IF ABS(gtk_adjustment_get_lower(adj) - 0.0) > 0.001 THEN ok := FALSE END;
   IF ABS(gtk_adjustment_get_upper(adj) - 100.0) > 0.001 THEN ok := FALSE END;
   IF ABS(gtk_adjustment_get_step_increment(adj) - 1.0) > 0.001 THEN ok := FALSE END;
   IF ABS(gtk_adjustment_get_page_increment(adj) - 10.0) > 0.001 THEN ok := FALSE END;
   IF ABS(gtk_adjustment_get_page_size(adj) - 20.0) > 0.001 THEN ok := FALSE END;
   gtk_adjustment_set_value(adj, 50.0);
   IF ABS(gtk_adjustment_get_value(adj) - 50.0) > 0.001 THEN
      printf("adjustment value wrong\n"); ok := FALSE
   END;
   gtk_adjustment_set_upper(adj, 200.0);
   IF ABS(gtk_adjustment_get_upper(adj) - 200.0) > 0.001 THEN ok := FALSE END;
   gtk_adjustment_clamp_page(adj, 0.0, 30.0);

   (* --- GtkProgressBar --- *)
   pbar := gtk_progress_bar_new();
   gtk_progress_bar_set_fraction(pbar, 0.25);
   IF ABS(gtk_progress_bar_get_fraction(pbar) - 0.25) > 0.001 THEN
      printf("progress fraction wrong\n"); ok := FALSE
   END;
   gtk_progress_bar_set_show_text(pbar, 1);
   IF gtk_progress_bar_get_show_text(pbar) # 1 THEN ok := FALSE END;
   gtk_progress_bar_set_text(pbar, "25 percent");
   CStrToM2(gtk_progress_bar_get_text(pbar), buf);
   IF (buf[0] # '2') OR (buf[10] # 0C) THEN
      printf("progress text wrong: [%s]\n", buf); ok := FALSE
   END;
   gtk_progress_bar_pulse(pbar);

   (* --- GtkSpinner --- *)
   spinner := gtk_spinner_new();
   gtk_spinner_start(spinner);
   IF gtk_spinner_get_spinning(spinner) # 1 THEN ok := FALSE END;
   gtk_spinner_stop(spinner);
   IF gtk_spinner_get_spinning(spinner) # 0 THEN ok := FALSE END;
   gtk_spinner_set_spinning(spinner, 1);
   IF gtk_spinner_get_spinning(spinner) # 1 THEN ok := FALSE END;

   (* --- GtkSeparator / GtkImage --- *)
   sep := gtk_separator_new(GtkHorizontal);
   IF sep = NIL THEN printf("separator NIL\n"); ok := FALSE END;
   image := gtk_image_new_from_icon_name("open-menu-symbolic");
   CStrToM2(gtk_image_get_icon_name(image), buf);
   IF (buf[0] # 'o') OR (buf[18] # 0C) THEN
      printf("image icon name wrong: [%s]\n", buf); ok := FALSE
   END;

   box := gtk_box_new(GtkVertical, 6);
   gtk_box_append(box, pbar);
   gtk_box_append(box, spinner);
   gtk_box_append(box, sep);
   gtk_box_append(box, image);
   window := gtk_application_window_new(application);
   gtk_window_set_child(window, box);

   passed := ok;
   g_application_quit(application)
END OnActivate;

VAR
   rc: INTEGER;
BEGIN
   passed := FALSE;
   app := gtk_application_new(AppId, 0);
   IF app = NIL THEN
      printf("test_utility: FAIL (no app)\n");
      HALT(1)
   END;
   Connect(app, "activate", ADR(OnActivate), NIL);
   rc := g_application_run(app, 0, NIL);

   IF passed THEN
      printf("test_utility: PASS\n");
      HALT(0)
   ELSE
      printf("test_utility: FAIL\n");
      HALT(1)
   END
END test_utility.