File: gtk-box.adb

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-----------------------------------------------------------------------
--               GtkAda - Ada95 binding for Gtk+/Gnome               --
--                                                                   --
--   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.                                       --
--                                                                   --
-----------------------------------------------------------------------

with System;
with Gtk.Enums;  use Gtk.Enums;
with Gtk.Widget; use Gtk.Widget;

package body Gtk.Box is

   ---------------
   -- Get_Child --
   ---------------

   function Get_Child
     (Box : access Gtk_Box_Record; Num : Gint) return Gtk_Widget
   is
      function Internal
        (Box : System.Address; Num : Gint) return System.Address;
      pragma Import (C, Internal, "ada_box_get_child");

      use type System.Address;
      S : constant System.Address := Internal (Get_Object (Box), Num);

   begin
      if S /= System.Null_Address then
         return Convert (S);
      else
         return null;
      end if;
   end Get_Child;

   ---------------------
   -- Get_Homogeneous --
   ---------------------

   function Get_Homogeneous
     (In_Box : access Gtk_Box_Record) return Boolean
   is
      function Internal (In_Box : System.Address) return Gboolean;
      pragma Import (C, Internal, "gtk_box_get_homogeneous");

   begin
      return Internal (Get_Object (In_Box)) /= 0;
   end Get_Homogeneous;

   -----------------
   -- Get_Spacing --
   -----------------

   function Get_Spacing (In_Box : access Gtk_Box_Record) return Gint is
      function Internal (In_Box : System.Address) return Gint;
      pragma Import (C, Internal, "gtk_box_get_spacing");

   begin
      return Internal (Get_Object (In_Box));
   end Get_Spacing;

   ------------------
   -- Gtk_New_Vbox --
   ------------------

   procedure Gtk_New_Vbox
     (Box         : out Gtk_Box;
      Homogeneous : Boolean := False;
      Spacing     : Gint := 0) is
   begin
      Box := new Gtk_Box_Record;
      Initialize_Vbox (Box, Homogeneous, Spacing);
   end Gtk_New_Vbox;

   ------------------
   -- Gtk_New_Hbox --
   ------------------

   procedure Gtk_New_Hbox
     (Box         : out Gtk_Box;
      Homogeneous : Boolean := False;
      Spacing     : Gint := 0) is
   begin
      Box := new Gtk_Box_Record;
      Initialize_Hbox (Box, Homogeneous, Spacing);
   end Gtk_New_Hbox;

   ---------------------
   -- Initialize_Hbox --
   ---------------------

   procedure Initialize_Hbox
     (Box         : access Gtk_Box_Record'Class;
      Homogeneous : Boolean := False;
      Spacing     : Gint := 0)
   is
      function Internal
        (Homogeneous : Gint;
         Spacing     : Gint) return System.Address;
      pragma Import (C, Internal, "gtk_hbox_new");

   begin
      Set_Object (Box, Internal (Boolean'Pos (Homogeneous), Spacing));
   end Initialize_Hbox;

   ---------------------
   -- Initialize_Vbox --
   ---------------------

   procedure Initialize_Vbox
     (Box         : access Gtk_Box_Record'Class;
      Homogeneous : Boolean := False;
      Spacing     : Gint := 0)
   is
      function Internal
        (Homogeneous : Gint;
         Spacing     : Gint) return System.Address;
      pragma Import (C, Internal, "gtk_vbox_new");

   begin
      Set_Object (Box, Internal (Boolean'Pos (Homogeneous), Spacing));
   end Initialize_Vbox;

   ----------------
   -- Pack_Start --
   ----------------

   procedure Pack_Start
     (In_Box  : access Gtk_Box_Record;
      Child   : access Gtk.Widget.Gtk_Widget_Record'Class;
      Expand  : Boolean := True;
      Fill    : Boolean := True;
      Padding : Gint    := 0)
   is
      procedure Internal
        (In_Box  : System.Address;
         Child   : System.Address;
         Expand  : Gint;
         Fill    : Gint;
         Padding : Gint);
      pragma Import (C, Internal, "gtk_box_pack_start");

   begin
      Internal (Get_Object (In_Box), Get_Object (Child),
                Boolean'Pos (Expand), Boolean'Pos (Fill), Padding);
   end Pack_Start;

   -------------------------
   -- Pack_Start_Defaults --
   -------------------------

   procedure Pack_Start_Defaults
     (In_Box  : access Gtk_Box_Record;
      Child   : access Gtk.Widget.Gtk_Widget_Record'Class)
   is
      procedure Internal
        (In_Box  : System.Address;
         Child   : System.Address);
      pragma Import (C, Internal, "gtk_box_pack_start_defaults");

   begin
      Internal (Get_Object (In_Box), Get_Object (Child));
   end Pack_Start_Defaults;

   --------------
   -- Pack_End --
   --------------

   procedure Pack_End
     (In_Box  : access Gtk_Box_Record;
      Child   : access Gtk.Widget.Gtk_Widget_Record'Class;
      Expand  : Boolean := True;
      Fill    : Boolean := True;
      Padding : Gint    := 0)
   is
      procedure Internal
        (In_Box  : System.Address;
         Child   : System.Address;
         Expand  : Gint;
         Fill    : Gint;
         Padding : Gint);
      pragma Import (C, Internal, "gtk_box_pack_end");

   begin
      Internal (Get_Object (In_Box), Get_Object (Child),
                Boolean'Pos (Expand), Boolean'Pos (Fill), Padding);
   end Pack_End;

   -----------------------
   -- Pack_End_Defaults --
   -----------------------

   procedure Pack_End_Defaults
     (In_Box  : access Gtk_Box_Record;
      Child   : access Gtk.Widget.Gtk_Widget_Record'Class)
   is
      procedure Internal
        (In_Box  : System.Address;
         Child   : System.Address);
      pragma Import (C, Internal, "gtk_box_pack_end_defaults");

   begin
      Internal (Get_Object (In_Box), Get_Object (Child));
   end Pack_End_Defaults;

   ---------------------
   -- Set_Homogeneous --
   ---------------------

   procedure Set_Homogeneous
     (In_Box      : access Gtk_Box_Record;
      Homogeneous : Boolean)
   is
      procedure Internal (In_Box : System.Address; Homogeneous : Gint);
      pragma Import (C, Internal, "gtk_box_set_homogeneous");

   begin
      Internal (Get_Object (In_Box), Boolean'Pos (Homogeneous));
   end Set_Homogeneous;

   -----------------
   -- Set_Spacing --
   -----------------

   procedure Set_Spacing
     (In_Box  : access Gtk_Box_Record;
      Spacing : Gint)
   is
      procedure Internal (In_Box : System.Address; Spacing : Gint);
      pragma Import (C, Internal, "gtk_box_set_spacing");

   begin
      Internal (Get_Object (In_Box), Spacing);
   end Set_Spacing;

   -------------------
   -- Reorder_Child --
   -------------------

   procedure Reorder_Child
     (In_Box : access Gtk_Box_Record;
      Child  : access Gtk.Widget.Gtk_Widget_Record'Class;
      Pos    : Guint)
   is
      procedure Internal
        (In_Box : System.Address;
         Child  : System.Address;
         Pos    : Guint);
      pragma Import (C, Internal, "gtk_box_reorder_child");

   begin
      Internal (Get_Object (In_Box), Get_Object (Child), Pos);
   end Reorder_Child;

   -------------------------
   -- Query_Child_Packing --
   -------------------------

   procedure Query_Child_Packing
     (In_Box   : access Gtk_Box_Record;
      Child    : access Gtk.Widget.Gtk_Widget_Record'Class;
      Expand   : out Boolean;
      Fill     : out Boolean;
      Padding  : out Gint;
      PackType : out Gtk.Enums.Gtk_Pack_Type)
   is
      procedure Internal
        (In_Box   : System.Address;
         Child    : System.Address;
         Expand   : out Gint;
         Fill     : out Gint;
         Padding  : out Gint;
         PackType : out Gint);
      pragma Import (C, Internal, "gtk_box_query_child_packing");

      Expand_Ptr  : Gint;
      Fill_Ptr    : Gint;
      PackT_Ptr   : Gint;
   begin
      Internal (Get_Object (In_Box), Get_Object (Child),
                Expand_Ptr, Fill_Ptr, Padding, PackT_Ptr);
      Expand   := Expand_Ptr /= 0;
      Fill     := Fill_Ptr /= 0;
      PackType := Gtk_Pack_Type'Val (PackT_Ptr);
   end Query_Child_Packing;

   -----------------------
   -- Set_Child_Packing --
   -----------------------

   procedure Set_Child_Packing
     (In_Box    : access Gtk_Box_Record;
      Child     : access Gtk.Widget.Gtk_Widget_Record'Class;
      Expand    : Boolean;
      Fill      : Boolean;
      Padding   : Gint;
      Pack_Type : Gtk_Pack_Type)
   is
      procedure Internal
        (In_Box    : System.Address;
         Child     : System.Address;
         Expand    : Gint;
         Fill      : Gint;
         Padding   : Gint;
         Pack_Type : Gtk_Pack_Type);
      pragma Import (C, Internal, "gtk_box_set_child_packing");

   begin
      Internal (Get_Object (In_Box), Get_Object (Child),
                Boolean'Pos (Expand), Boolean'Pos (Fill), Padding, Pack_Type);
   end Set_Child_Packing;

end Gtk.Box;