#include <stdio.h>

#include <gtk/gtk.h>

static GtkWidget *spinner1;

static void toggle_snap( GtkWidget     *widget,

                         GtkSpinButton *spin )

{

  gtk_spin_button_set_snap_to_ticks (spin, GTK_TOGGLE_BUTTON (widget)->active);

}

static void toggle_numeric( GtkWidget *widget,

                            GtkSpinButton *spin )

{

  gtk_spin_button_set_numeric (spin, GTK_TOGGLE_BUTTON (widget)->active);

}

static void change_digits( GtkWidget *widget,

                           GtkSpinButton *spin )

{

  gtk_spin_button_set_digits (GTK_SPIN_BUTTON (spinner1),

                              gtk_spin_button_get_value_as_int (spin));

}

static void get_value( GtkWidget *widget,

                       gpointer data )

{

  gchar *buf;

  GtkLabel *label;

  GtkSpinButton *spin;

  spin = GTK_SPIN_BUTTON (spinner1);

  label = GTK_LABEL (g_object_get_data (G_OBJECT (widget), "user_data"));

  if (GPOINTER_TO_INT (data) == 1)

    buf = g_strdup_printf ("%d", gtk_spin_button_get_value_as_int (spin));

  else

    buf = g_strdup_printf ("%0.*f", spin->digits,

                           gtk_spin_button_get_value (spin));

  gtk_label_set_text (label, buf);

  g_free (buf);

}

int main( int   argc,

          char *argv[] )

{

  GtkWidget *window;

  GtkWidget *frame;

  GtkWidget *hbox;

  GtkWidget *main_vbox;

  GtkWidget *vbox;

  GtkWidget *vbox2;

  GtkWidget *spinner2;

  GtkWidget *spinner;

  GtkWidget *button;

  GtkWidget *label;

  GtkWidget *val_label;

  GtkAdjustment *adj;

  /* Initialise GTK */

  gtk_init (&argc, &argv);

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);

  g_signal_connect (window, "destroy",

		    G_CALLBACK (gtk_main_quit),

		    NULL);

  gtk_window_set_title (GTK_WINDOW (window), "Spin Button");

  main_vbox = gtk_vbox_new (FALSE, 5);

  gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 10);

  gtk_container_add (GTK_CONTAINER (window), main_vbox);

  frame = gtk_frame_new ("Not accelerated");

  gtk_box_pack_start (GTK_BOX (main_vbox), frame, TRUE, TRUE, 0);

  vbox = gtk_vbox_new (FALSE, 0);

  gtk_container_set_border_width (GTK_CONTAINER (vbox), 5);

  gtk_container_add (GTK_CONTAINER (frame), vbox);

  /* Day, month, year spinners */

  hbox = gtk_hbox_new (FALSE, 0);

  gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 5);

  vbox2 = gtk_vbox_new (FALSE, 0);

  gtk_box_pack_start (GTK_BOX (hbox), vbox2, TRUE, TRUE, 5);

  label = gtk_label_new ("Day :");

  gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);

  gtk_box_pack_start (GTK_BOX (vbox2), label, FALSE, TRUE, 0);

  adj = (GtkAdjustment *) gtk_adjustment_new (1.0, 1.0, 31.0, 1.0,

					      5.0, 0.0);

  spinner = gtk_spin_button_new (adj, 0, 0);

  gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (spinner), TRUE);

  gtk_box_pack_start (GTK_BOX (vbox2), spinner, FALSE, TRUE, 0);

  vbox2 = gtk_vbox_new (FALSE, 0);

  gtk_box_pack_start (GTK_BOX (hbox), vbox2, TRUE, TRUE, 5);

  label = gtk_label_new ("Month :");

  gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);

  gtk_box_pack_start (GTK_BOX (vbox2), label, FALSE, TRUE, 0);

  adj = (GtkAdjustment *) gtk_adjustment_new (1.0, 1.0, 12.0, 1.0,

					      5.0, 0.0);

  spinner = gtk_spin_button_new (adj, 0, 0);

  gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (spinner), TRUE);

  gtk_box_pack_start (GTK_BOX (vbox2), spinner, FALSE, TRUE, 0);

  vbox2 = gtk_vbox_new (FALSE, 0);

  gtk_box_pack_start (GTK_BOX (hbox), vbox2, TRUE, TRUE, 5);

  label = gtk_label_new ("Year :");

  gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);

  gtk_box_pack_start (GTK_BOX (vbox2), label, FALSE, TRUE, 0);

  adj = (GtkAdjustment *) gtk_adjustment_new (1998.0, 0.0, 2100.0,

					      1.0, 100.0, 0.0);

  spinner = gtk_spin_button_new (adj, 0, 0);

  gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (spinner), FALSE);

  gtk_widget_set_size_request (spinner, 55, -1);

  gtk_box_pack_start (GTK_BOX (vbox2), spinner, FALSE, TRUE, 0);

  frame = gtk_frame_new ("Accelerated");

  gtk_box_pack_start (GTK_BOX (main_vbox), frame, TRUE, TRUE, 0);

  vbox = gtk_vbox_new (FALSE, 0);

  gtk_container_set_border_width (GTK_CONTAINER (vbox), 5);

  gtk_container_add (GTK_CONTAINER (frame), vbox);

  hbox = gtk_hbox_new (FALSE, 0);

  gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, TRUE, 5);

  vbox2 = gtk_vbox_new (FALSE, 0);

  gtk_box_pack_start (GTK_BOX (hbox), vbox2, TRUE, TRUE, 5);

  label = gtk_label_new ("Value :");

  gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);

  gtk_box_pack_start (GTK_BOX (vbox2), label, FALSE, TRUE, 0);

  adj = (GtkAdjustment *) gtk_adjustment_new (0.0, -10000.0, 10000.0,

					      0.5, 100.0, 0.0);

  spinner1 = gtk_spin_button_new (adj, 1.0, 2);

  gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (spinner1), TRUE);

  gtk_widget_set_size_request (spinner1, 100, -1);

  gtk_box_pack_start (GTK_BOX (vbox2), spinner1, FALSE, TRUE, 0);

  vbox2 = gtk_vbox_new (FALSE, 0);

  gtk_box_pack_start (GTK_BOX (hbox), vbox2, TRUE, TRUE, 5);

  label = gtk_label_new ("Digits :");

  gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);

  gtk_box_pack_start (GTK_BOX (vbox2), label, FALSE, TRUE, 0);

  adj = (GtkAdjustment *) gtk_adjustment_new (2, 1, 5, 1, 1, 0);

  spinner2 = gtk_spin_button_new (adj, 0.0, 0);

  gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (spinner2), TRUE);

  g_signal_connect (adj, "value-changed",

		    G_CALLBACK (change_digits),

		    spinner2);

  gtk_box_pack_start (GTK_BOX (vbox2), spinner2, FALSE, TRUE, 0);

  hbox = gtk_hbox_new (FALSE, 0);

  gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, TRUE, 5);

  button = gtk_check_button_new_with_label ("Snap to 0.5-ticks");

  g_signal_connect (button, "clicked",

		    G_CALLBACK (toggle_snap),

		    spinner1);

  gtk_box_pack_start (GTK_BOX (vbox), button, TRUE, TRUE, 0);

  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);

  button = gtk_check_button_new_with_label ("Numeric only input mode");

  g_signal_connect (button, "clicked",

		    G_CALLBACK (toggle_numeric),

                    spinner1);

  gtk_box_pack_start (GTK_BOX (vbox), button, TRUE, TRUE, 0);

  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);

  val_label = gtk_label_new ("");

  hbox = gtk_hbox_new (FALSE, 0);

  gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, TRUE, 5);

  button = gtk_button_new_with_label ("Value as Int");

  g_object_set_data (G_OBJECT (button), "user_data", val_label);

  g_signal_connect (button, "clicked",

		    G_CALLBACK (get_value),

		    GINT_TO_POINTER (1));

  gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 5);

  button = gtk_button_new_with_label ("Value as Float");

  g_object_set_data (G_OBJECT (button), "user_data", val_label);

  g_signal_connect (button, "clicked",

		    G_CALLBACK (get_value),

		    GINT_TO_POINTER (2));

  gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 5);

  gtk_box_pack_start (GTK_BOX (vbox), val_label, TRUE, TRUE, 0);

  gtk_label_set_text (GTK_LABEL (val_label), "0");

  hbox = gtk_hbox_new (FALSE, 0);

  gtk_box_pack_start (GTK_BOX (main_vbox), hbox, FALSE, TRUE, 0);

  button = gtk_button_new_with_label ("Close");

  g_signal_connect_swapped (button, "clicked",

                            G_CALLBACK (gtk_widget_destroy),

			    window);

  gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 5);

  gtk_widget_show_all (window);

  /* Enter the event loop */

  gtk_main ();

  return 0;

}