Testgtk source code
This code is part of testgtk, a demo application packaged with GtkAda. Testgtk demonstrates the various widgets of GtkAda
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-- GtkAda - Ada95 binding for the Gimp Toolkit --
-- --
-- Copyright (C) 1998-1999 --
-- Emmanuel Briot, Joel Brobecker and Arnaud Charlet --
-- --
-- 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 Gtk.Box;
use Gtk.Box;
with Gtk.Menu;
use Gtk.Menu;
with Gtk.Menu_Bar;
use Gtk.Menu_Bar;
with Gtk.Menu_Item;
use Gtk.Menu_Item;
with Gtk.Option_Menu;
use Gtk.Option_Menu;
with Gtk.Radio_Menu_Item;
use Gtk.Radio_Menu_Item;
with Gtk.Tearoff_Menu_Item;
use Gtk.Tearoff_Menu_Item;
with Gtk.Widget;
use Gtk.Widget;
with Gtk;
use Gtk;
package body Create_Menu
is
function Help
return String
is
begin
return
"There are several widgets involved
in displaying menus. The"
& " @bGtk_Menu_Bar@B widget
is a horizontal menu bar, which normally"
& " appears
at the top
of an application. The @bGtk_Menu@B widget
is"
& " the actual menu that pops up. Both @bGtk_Menu_Bar@B
and"
& " @bGtk_Menu@B are subclasses
of @bGtk_Menu_Shell@B; a"
& " @bGtk_Menu_Shell@B contains menu items (@bGtk_Menu_Item@B)."
& " Each menu item contains text
and/
or images
and can be selected"
& " by the user."
& ASCII.LF
& "This demo shows how to create a @bGtk_Menu_Bar@B,
with multiple"
& " @bGtk_Menu@Bs. Each
of this submenu
is actually a @btearoff@B menu"
& ", which means by that clicking on the dashed line, you can simply"
& " glue the submenu to another place on your desktop,
and keep it"
& " around. To hide it, simply click on the dashed line again."
& ASCII.LF
& "There are several kinds
of menu item, including plain"
& " @bGtk_Menu_Item@B, @bGtk_Check_Menu_Item@B which can be"
& " checked/unchecked, @bGtk_Radio_Menu_Item@B which
is a check menu"
& " item that's
in a mutually exclusive group,"
& " @bGtk_Separator_Menu_Item@B which
is a separator bar,"
& " @bGtk_Tearoff_Menu_Item@B which allows a @bGtk_Menu@B to be torn"
& " off,
and @bGtk_Image_Menu_Item@B which can place a @bGtk_Image@B"
& "
or other widget next to the menu text. A @bGtk_Menu_Item can have"
& " a submenu, which
is simply a @bGtk_Menu@B to pop up
when the menu"
& " item
is selected. Typically,
all menu items
in a menu bar have"
& " submenus."
& ASCII.LF
& "The @bGtk_Option_Menu@B widget
is a button that pops up a"
& " @bGtk_Menu@B
when clicked. It's used inside dialogs
and such."
& " This
is different from the @bGtk_Combo_Box@B that you can see"
& "
in the @bEntry@B demo, since a @bGtk_Option_Menu@B does
not have"
& " any editable
entry associated
with it.";
end Help;
function Create_Menu
(Depth : Integer; Tearoff : Boolean)
return Gtk_Menu
is
Menu : Gtk_Menu;
Group : Widget_SList.GSlist;
Menu_Item : Gtk_Radio_Menu_Item;
begin
Gtk_New (Menu);
if Tearoff
then
declare
Tear_Menu : Gtk_Tearoff_Menu_Item;
begin
Gtk_New (Tear_Menu);
Append (Menu, Tear_Menu);
Show (Tear_Menu);
end;
end if;
for J
in 0 .. 5
loop
Gtk_New (Menu_Item, Group, "Item" & Integer'Image (Depth)
& " -" & Integer'Image (J + 1));
Group := Gtk.Radio_Menu_Item.Get_Group (Menu_Item);
Append (Menu, Menu_Item);
Show (Menu_Item);
if J = 3
then
Set_Sensitive (Menu_Item, False);
end if;
if Depth > 1
then
Set_Submenu (Menu_Item, Create_Menu (Depth - 1, Tearoff));
end if;
end loop;
return Menu;
end Create_Menu;
procedure Run (Frame :
access Gtk.Frame.Gtk_Frame_Record'Class)
is
Box1 : Gtk_Box;
Box2 : Gtk_Box;
Menu_Bar : Gtk_Menu_Bar;
Menu : Gtk_Menu;
Menu_Item : Gtk_Menu_Item;
Option_Menu : Gtk_Option_Menu;
begin
Set_Label (Frame, "Menus");
Gtk_New_Vbox (Box1, False, 0);
Add (Frame, Box1);
Gtk_New (Menu_Bar);
Pack_Start (Box1, Menu_Bar, False, False, 0);
Menu := Create_Menu (2, True);
Gtk_New (Menu_Item, "test" & ASCII.LF & "line2");
Set_Submenu (Menu_Item, Menu);
Append (Menu_Bar, Menu_Item);
Gtk_New (Menu_Item, "foo");
Set_Submenu (Menu_Item, Create_Menu (3, True));
Append (Menu_Bar, Menu_Item);
Gtk_New (Menu_Item, "bar");
Set_Submenu (Menu_Item, Create_Menu (4, True));
Set_Right_Justified (Menu_Item, True);
Append (Menu_Bar, Menu_Item);
Gtk_New_Vbox (Box2, False, 10);
Set_Border_Width (Box2, 10);
Pack_Start (Box1, Box2, False, False, 0);
Gtk_New (Option_Menu);
Set_Menu (Option_Menu, Create_Menu (1, False));
Set_History (Option_Menu, 3);
Pack_Start (Box2, Option_Menu, False, False, 0);
Show_All (Frame);
end Run;
end Create_Menu;