File: create_scrolled.adb

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-----------------------------------------------------------------------
--          GtkAda - Ada95 binding for the Gimp Toolkit              --
--                                                                   --
--   Copyright (C) 1998-2000 E. Briot, J. Brobecker and A. Charlet   --
--                Copyright (C) 2000-2002 ACT-Europe                 --
--                                                                   --
-- This library is free software; you can redistribute it and/or     --
-- modify it under the terms of the GNU General Public               --
-- License as published by the Free Software Foundation; either      --
-- version 2 of the License, or (at your option) any later version.  --
--                                                                   --
-- This library is distributed in the hope that it will be useful,   --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of    --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU --
-- General Public License for more details.                          --
--                                                                   --
-- You should have received a copy of the GNU General Public         --
-- License along with this library; if not, write to the             --
-- Free Software Foundation, Inc., 59 Temple Place - Suite 330,      --
-- Boston, MA 02111-1307, USA.                                       --
--                                                                   --
-- As a special exception, if other files instantiate generics from  --
-- this unit, or you link this unit with other files to produce an   --
-- executable, this  unit  does not  by itself cause  the resulting  --
-- executable to be covered by the GNU General Public License. This  --
-- exception does not however invalidate any other reasons why the   --
-- executable file  might be covered by the  GNU Public License.     --
-----------------------------------------------------------------------

with Glib;                use Glib;
with Gtk.Enums;           use Gtk.Enums;
with Gtk.Scrolled_Window; use Gtk.Scrolled_Window;
with Gtk.Table;           use Gtk.Table;
with Gtk.Toggle_Button;   use Gtk.Toggle_Button;
with Gtk;                 use Gtk;

package body Create_Scrolled is

   ----------
   -- Help --
   ----------

   function Help return String is
   begin
      return "This demo shows how a @bGtk_Scrolled_Window@B can be used to"
        & " provide some scrolling in any other widget. In this example, the"
        & " @bGtk_Scrolled_Window@B contains a Gtk_Table, that is"
        & " automatically scrolled when the scrollbars are moved."
        & ASCII.LF
        & "No explicit signal is required in this demo, everything is done"
        & " through @bGtk_Adjustment@Bs, that contain the current value of the"
        & " @bGtK_Scrollbar@Bs and also specify the area to display in the"
        & " @bGtk_Table@B.";
   end Help;

   ---------
   -- Run --
   ---------

   procedure Run (Frame : access Gtk.Frame.Gtk_Frame_Record'Class) is
      Table     : Gtk_Table;
      Scrolled  : Gtk_Scrolled_Window;
      Toggle    : Gtk_Toggle_Button;

   begin
      Set_Label (Frame, "Scrolled Window");

      Gtk_New (Scrolled);
      Set_Border_Width (Scrolled, Border_Width => 10);
      Set_Policy (Scrolled,
                  H_Scrollbar_Policy => Policy_Automatic,
                  V_Scrollbar_Policy => Policy_Automatic);
      Add (Frame, Scrolled);

      Gtk_New (Table,
               Rows        => 20,
               Columns     => 20,
               Homogeneous => False);
      Set_Row_Spacings (Table, Spacing => 10);
      Set_Col_Spacings (Table, Spacing => 10);
      Add_With_Viewport (Scrolled, Table);
      Set_Focus_Hadjustment (Table, Get_Hadjustment (Scrolled));
      Set_Focus_Vadjustment (Table, Get_Vadjustment (Scrolled));

      for I in 0 .. 19 loop
         for J in 0 .. 19 loop
            Gtk_New (Toggle, "button (" & Integer'Image (I)
                     & "," & Integer'Image (J) & ")");
            Attach_Defaults (Table, Toggle, Guint (I), Guint (I + 1),
                             Guint (J), Guint (J + 1));
         end loop;
      end loop;

      Show_All (Frame);
   end Run;

end Create_Scrolled;