{

  Converted from C to Pascal by Artur Bac with liitle additions by me
  <arturbac@poczta.onet.pl>
  Reda Poland
}
{$MODE objfpc}
{$H+}
{$S+}
{$HINTS ON}
{$ifdef win32}
  {$define extdecl := stdcall;}
  {$APPTYPE GUI}
{$endif}
{$ifdef unix}
  {$define extdecl := cdecl;}
{$endif}

Program spinbutton;

Uses glib,gtk;

Type
    PGInt = ^gint;
Const
    a : gint = 1;
    b : gint = 2;
Var
 spinner1 ,
 spinner2 : PGtkWidget;

Function  GPOINTER_TO_INT (data : pgint) : gint;
Begin
    GPOINTER_TO_INT := data^;
End;

Procedure toggle_snap( widget : PGtkWidget;
                         spin : PGtkSpinButton ); cdecl;
Begin
  gtk_spin_button_set_snap_to_ticks (spin,
            gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)));
End ;

Procedure toggle_numeric( widget : PGtkWidget;
                         spin : PGtkSpinButton ); cdecl;
Begin
  gtk_spin_button_set_numeric (spin,
                            gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)));
End;

Procedure change_digits( widget : PGtkWidget;
                    spin : PGtkSpinButton ); cdecl;
Begin
  gtk_spin_button_set_digits (GTK_SPIN_BUTTON (spinner1),
                              gtk_spin_button_get_value_as_int (spin));
End;

Procedure  get_value( widget : PGtkWidget;
                    data : gpointer ) ; cdecl;
Var
  Ptr_buf   : PGchar;
  buf       : string;
  label_l   : PGtkLabel ;
  spin,spin2: PGtkSpinButton;
Begin
  spin := GTK_SPIN_BUTTON (spinner1);
  spin2 := GTK_SPIN_BUTTON (spinner2);
  label_l := GTK_LABEL (gtk_object_get_user_data (GTK_OBJECT (widget)));
  if (GPOINTER_TO_INT (data) = 1) then
    str(gtk_spin_button_get_value_as_int (spin),buf)
  else
    Str(gtk_spin_button_get_value_as_float (spin)
                    :10:gtk_spin_button_get_value_as_int(spin2)  //This checks how many digits we have
                    ,buf);
  Ptr_buf:=PChar(buf); //We have to change ansistring to a pointer to char PChar == PGChar
  gtk_label_set_text (label_l, Ptr_buf);
End;


Var
  window,
  frame,
  hbox,
  main_vbox,
  vbox,
  vbox2,
  spinner,
  button,
  label_l,
  val_label : PGtkWidget;
  adj : PGtkAdjustment;
Begin
  // Initialise GTK
  gtk_set_locale ();
  gtk_init(@argc, @argv);
  gtk_rc_init;

  window := gtk_window_new (GTK_WINDOW_TOPLEVEL);

  gtk_signal_connect (GTK_OBJECT (window), 'destroy',
                      GTK_SIGNAL_FUNC (@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_l := gtk_label_new ('Day :');
  gtk_misc_set_alignment (GTK_MISC (label_l), 0, 0.5);
  gtk_box_pack_start (GTK_BOX (vbox2), label_l, FALSE, TRUE, 0);

  adj := PGtkAdjustment ( 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_spin_button_set_shadow_type (GTK_SPIN_BUTTON (spinner),
                                   GTK_SHADOW_OUT);
  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_l := gtk_label_new ('Month :');
  gtk_misc_set_alignment (GTK_MISC (label_l), 0, 0.5);
  gtk_box_pack_start (GTK_BOX (vbox2), label_l, FALSE, TRUE, 0);

  adj := PGtkAdjustment (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_spin_button_set_shadow_type (GTK_SPIN_BUTTON (spinner),
                                   GTK_SHADOW_ETCHED_IN);
  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_l := gtk_label_new ('Year :');
  gtk_misc_set_alignment (GTK_MISC (label_l), 0, 0.5);
  gtk_box_pack_start (GTK_BOX (vbox2), label_l, FALSE, TRUE, 0);

  adj := PGtkAdjustment (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_spin_button_set_shadow_type (GTK_SPIN_BUTTON (spinner),
                                   GTK_SHADOW_IN);
  gtk_widget_set_usize (spinner, 55, 0);
  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_l := gtk_label_new ('Value :');
  gtk_misc_set_alignment (GTK_MISC (label_l), 0, 0.5);
  gtk_box_pack_start (GTK_BOX (vbox2), label_l, FALSE, TRUE, 0);

  adj := PGtkAdjustment (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_usize (spinner1, 100, 0);
  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_l := gtk_label_new ('Digits :');
  gtk_misc_set_alignment (GTK_MISC (label_l), 0, 0.5);
  gtk_box_pack_start (GTK_BOX (vbox2), label_l, FALSE, TRUE, 0);

  adj := PGtkAdjustment (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);
  gtk_signal_connect (GTK_OBJECT (adj), 'value_changed',
                      GTK_SIGNAL_FUNC (@change_digits),
                      gpointer (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');
  gtk_signal_connect (GTK_OBJECT (button), 'clicked',
                      GTK_SIGNAL_FUNC (@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');
  gtk_signal_connect (GTK_OBJECT (button), 'clicked',
                      GTK_SIGNAL_FUNC (@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');
  gtk_object_set_user_data (GTK_OBJECT (button), val_label);
  gtk_signal_connect (GTK_OBJECT (button), 'clicked',
          GTK_SIGNAL_FUNC (@get_value),@a);
  gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 5);

  button := gtk_button_new_with_label ('Value as Float');
  gtk_object_set_user_data (GTK_OBJECT (button), val_label);
  gtk_signal_connect (GTK_OBJECT (button), 'clicked',
              GTK_SIGNAL_FUNC (@get_value),@b);
  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');
  gtk_signal_connect_object (GTK_OBJECT (button), 'clicked',
                             GTK_SIGNAL_FUNC (@gtk_widget_destroy),
                             GTK_OBJECT (window));
  gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 5);

  gtk_widget_show_all (window);

  // Enter the event loop
  gtk_main ();

End.