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------------------------------------------------------------------------------
-- GtkAda - Ada95 binding for the Gimp Toolkit --
-- --
-- Copyright (C) 1998-2018, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify it --
-- under terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 3, 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 MERCHAN- --
-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- --
-- --
-- --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
------------------------------------------------------------------------------
with Glib; use Glib;
with Glib.Object; use Glib.Object;
with Gtk.Box; use Gtk.Box;
with Gtk.Button; use Gtk.Button;
with Gtk.Label; use Gtk.Label;
with Gtk.Handlers; use Gtk.Handlers;
with Gtk.Widget; use Gtk.Widget;
with Gtk; use Gtk;
with Ada.Text_IO;
package body Create_Reparent is
type My_Button_Record is new Gtk_Button_Record with record
Label : Gtk_Label;
end record;
type My_Button is access all My_Button_Record'Class;
package Box_Cb is new Handlers.User_Callback (My_Button_Record, Gtk_Box);
package Int_Cb is new Handlers.User_Callback
(Gtk_Label_Record, Gint);
----------
-- Help --
----------
function Help return String is
begin
return "This demo does not demonstrate a widget. Instead, it shows how"
& " you can dynamically change the parent of a widget. The widget is"
& " automatically redisplayed inside its new parent, and delete from"
& " the old one."
& ASCII.LF
& "This demo also shows how to extend an existing @bGtk_Button@B to"
& " include specific data to it.";
end Help;
-----------------------
-- Set_Parent_Signal --
-----------------------
procedure Set_Parent_Signal
(Child : access Gtk_Label_Record'Class;
Old_Parent : access Gtk_Widget_Record'Class;
Data : Gint)
is
begin
Ada.Text_IO.Put ("Set_Parent for ");
if Is_Created (Child.all) then
Ada.Text_IO.Put (Type_Name (Get_Type (Child))
& " : new parent : ");
if Get_Parent (Child) /= null then
Ada.Text_IO.Put (Type_Name (Get_Type (Get_Parent (Child))));
else
Ada.Text_IO.Put ("NULL");
end if;
else
Ada.Text_IO.Put ("NULL ");
end if;
Ada.Text_IO.Put (" old parent : ");
if Is_Created (Old_Parent.all) then
Ada.Text_IO.Put (Type_Name (Get_Type (Old_Parent)));
else
Ada.Text_IO.Put ("NULL");
end if;
Ada.Text_IO.Put_Line (" data = " & Gint'Image (Data));
end Set_Parent_Signal;
--------------------
-- Reparent_Label --
--------------------
procedure Reparent_Label
(Widget : access My_Button_Record'Class;
New_Parent : Gtk_Box)
is
begin
Reparent (Widget.Label, New_Parent);
end Reparent_Label;
---------
-- Run --
---------
procedure Run (Frame : access Gtk.Frame.Gtk_Frame_Record'Class) is
Box1 : Gtk_Box;
Box2 : Gtk_Box;
Box3 : Gtk_Box;
Label : Gtk_Label;
Frame2 : Gtk_Frame;
Myb : My_Button;
begin
Set_Label (Frame, "Reparent");
Gtk_New_Vbox (Box1, False, 0);
Add (Frame, Box1);
Gtk_New_Hbox (Box2, False, 5);
Set_Border_Width (Box2, 10);
Pack_Start (Box1, Box2, False, False, 0);
Gtk_New (Label, "hello world");
Gtk_New (Frame2, "Frame 1");
Pack_Start (Box2, Frame2, True, True, 0);
Gtk_New_Vbox (Box3, False, 5);
Set_Border_Width (Box3, 5);
Add (Frame2, Box3);
Myb := new My_Button_Record;
Initialize (Myb, "switch");
Box_Cb.Connect (Myb, "clicked", Reparent_Label'Access, Box3);
Myb.Label := Label;
Pack_Start (Box3, Myb, False, True, 0);
Pack_Start (Box3, Label, False, True, 0);
Int_Cb.Connect
(Label, "parent_set",
Int_Cb.To_Marshaller (Set_Parent_Signal'Access), 42);
Show (Label);
Gtk_New (Frame2, "Frame 2");
Pack_Start (Box2, Frame2, True, True, 0);
Gtk_New_Vbox (Box3, False, 5);
Set_Border_Width (Box3, 5);
Add (Frame2, Box3);
Myb := new My_Button_Record;
Initialize (Myb, "switch");
Box_Cb.Connect (Myb, "clicked",
Box_Cb.To_Marshaller (Reparent_Label'Access),
Box3);
Myb.Label := Label;
Pack_Start (Box3, Myb, False, True, 0);
Show_All (Frame);
end Run;
end Create_Reparent;
|
