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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. --
-- --
-- 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.Adjustment; use Gtk.Adjustment;
with Gtk.Box; use Gtk.Box;
with Gtk.Button; use Gtk.Button;
with Gtk.Check_Button; use Gtk.Check_Button;
with Gtk.Handlers; use Gtk.Handlers;
with Gtk.Label; use Gtk.Label;
with Gtk.Spin_Button; use Gtk.Spin_Button;
with Gtk.Toggle_Button; use Gtk.Toggle_Button;
with Gtk; use Gtk;
package body Create_Spin 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;
-- This is basic Gtk_Button, except that is has an extra internal
-- data.
package Spin_O_Cb is new Handlers.Callback (Gtk_Spin_Button_Record);
package Spin_Cb is new Handlers.User_Callback
(Gtk_Toggle_Button_Record, Gtk_Spin_Button);
package Button_Cb is new Handlers.User_Callback (My_Button_Record, Gint);
Spinner1 : Gtk_Spin_Button;
----------
-- Help --
----------
function Help return String is
begin
return "A @bGtk_Spin_Button@B is a widget that allows the user to"
& " choose a value from a specific range. You can only associate"
& " the spin button with numeric values."
& ASCII.LF
& "This demo also creates a child of @bGtk_Button@B for the two"
& " buttons at the bottom. These are basic buttons, but they also"
& " contain a pointer to the label where to display the value.";
end Help;
-------------------
-- Change_Digits --
-------------------
procedure Change_Digits (Spin : access Gtk_Spin_Button_Record'Class) is
begin
Set_Digits (Spinner1, Guint (Get_Value_As_Int (Spin)));
end Change_Digits;
-----------------
-- Toggle_Snap --
-----------------
procedure Toggle_Snap (Widget : access Gtk_Toggle_Button_Record'Class;
Spin : in Gtk_Spin_Button) is
begin
Set_Snap_To_Ticks (Spin, Get_Active (Widget));
end Toggle_Snap;
--------------------
-- Toggle_Numeric --
--------------------
procedure Toggle_Numeric (Widget : access Gtk_Toggle_Button_Record'Class;
Spin : in Gtk_Spin_Button) is
begin
Set_Numeric (Spin, Get_Active (Widget));
end Toggle_Numeric;
---------------
-- Get_Value --
---------------
procedure Get_Value (Widget : access My_Button_Record'Class;
Data : in Gint)
is
Spin : constant Gtk_Spin_Button := Spinner1;
begin
if Data = 1 then
Set_Text (Widget.Label, Gint'Image (Get_Value_As_Int (Spin)));
else
Set_Text (Widget.Label, Gdouble'Image (Get_Value (Spin)));
end if;
end Get_Value;
---------
-- Run --
---------
procedure Run (Frame : access Gtk.Frame.Gtk_Frame_Record'Class) is
Main_Box : Gtk_Box;
VBox : Gtk_Box;
Hbox : Gtk_Box;
Vbox2 : Gtk_Box;
Label : Gtk_Label;
Adj : Gtk_Adjustment;
Spinner : Gtk_Spin_Button;
Spinner2 : Gtk_Spin_Button;
Frame2 : Gtk_Frame;
Check : Gtk_Check_Button;
Myb : My_Button;
begin
Set_Label (Frame, "Spin Buttons");
Gtk_New_Vbox (Main_Box, False, 5);
Set_Border_Width (Main_Box, 10);
Add (Frame, Main_Box);
Gtk_New (Frame2, "Not accelerated");
Pack_Start (Main_Box, Frame2, False, False, 0);
Gtk_New_Vbox (VBox, False, 0);
Set_Border_Width (VBox, 5);
Add (Frame2, VBox);
-- Day, month, year spinners
Gtk_New_Hbox (Hbox, False, 0);
Pack_Start (VBox, Hbox, False, False, 5);
Gtk_New_Vbox (Vbox2, False, 0);
Pack_Start (Hbox, Vbox2, False, False, 5);
Gtk_New (Label, "Day:");
Set_Alignment (Label, 0.0, 0.5);
Pack_Start (Vbox2, Label, False, False, 0);
Gtk_New (Adj, 1.0, 1.0, 31.0, 1.0, 5.0, 0.0);
Gtk_New (Spinner, Adj, 0.0, 0);
Set_Wrap (Spinner, True);
Pack_Start (Vbox2, Spinner, False, False, 0);
Gtk_New_Vbox (Vbox2, False, 0);
Pack_Start (Hbox, Vbox2, False, False, 5);
Gtk_New (Label, "Month:");
Set_Alignment (Label, 0.0, 0.5);
Pack_Start (Vbox2, Label, False, False, 0);
Gtk_New (Adj, 1.0, 1.0, 12.0, 1.0, 5.0, 0.0);
Gtk_New (Spinner, Adj, 0.0, 0);
Set_Wrap (Spinner, True);
Pack_Start (Vbox2, Spinner, False, False, 0);
Gtk_New_Vbox (Vbox2, False, 0);
Pack_Start (Hbox, Vbox2, False, False, 5);
Gtk_New (Label, "Year:");
Set_Alignment (Label, 0.0, 0.5);
Pack_Start (Vbox2, Label, False, False, 0);
Gtk_New (Adj, 1998.0, 0.0, 2100.0, 1.0, 100.0, 0.0);
Gtk_New (Spinner, Adj, 0.0, 0);
Set_Wrap (Spinner, True);
Set_USize (Spinner, 55, 0);
Pack_Start (Vbox2, Spinner, False, False, 0);
Gtk_New (Frame2, "Accelerated");
Pack_Start (Main_Box, Frame2, False, False, 0);
Gtk_New_Vbox (VBox, False, 0);
Set_Border_Width (VBox, 5);
Add (Frame2, VBox);
Gtk_New_Hbox (Hbox, False, 0);
Pack_Start (VBox, Hbox, False, False, 5);
Gtk_New_Vbox (Vbox2, False, 0);
Pack_Start (Hbox, Vbox2, False, False, 5);
Gtk_New (Label, "Value:");
Set_Alignment (Label, 0.0, 0.5);
Pack_Start (Vbox2, Label, False, False, 0);
Gtk_New (Adj, 0.0, -10000.0, 10000.0, 0.5, 100.0, 0.0);
Gtk_New (Spinner1, Adj, 1.0, 2);
Set_Wrap (Spinner1, True);
Set_USize (Spinner1, 100, 0);
Set_Update_Policy (Spinner1, Update_Always);
Pack_Start (Vbox2, Spinner1, False, False, 0);
Gtk_New_Vbox (Vbox2, False, 0);
Pack_Start (Hbox, Vbox2, False, False, 5);
Gtk_New (Label, "Digits:");
Set_Alignment (Label, 0.0, 0.5);
Pack_Start (Vbox2, Label, False, False, 0);
Gtk_New (Adj, 2.0, 1.0, 5.0, 1.0, 1.0, 0.0);
Gtk_New (Spinner2, Adj, 0.0, 0);
Set_Wrap (Spinner2, True);
Spin_O_Cb.Object_Connect
(Adj, "value_changed",
Spin_O_Cb.To_Marshaller (Change_Digits'Access),
Slot_Object => Spinner2);
Pack_Start (Vbox2, Spinner2, False, False, 0);
Gtk_New_Hbox (Hbox, False, 0);
Pack_Start (VBox, Hbox, False, False, 5);
Gtk_New (Check, "Snap to 0.5-ticks");
Spin_Cb.Connect
(Check, "clicked",
Spin_Cb.To_Marshaller (Toggle_Snap'Access), Spinner1);
Pack_Start (VBox, Check, False, False, 0);
Set_Active (Check, True);
Gtk_New (Check, "Snap Numeric only input mode");
Spin_Cb.Connect
(Check, "clicked",
Spin_Cb.To_Marshaller (Toggle_Numeric'Access), Spinner1);
Pack_Start (VBox, Check, False, False, 0);
Set_Active (Check, True);
Gtk_New (Label, "");
Gtk_New_Hbox (Hbox, False, 0);
Pack_Start (VBox, Hbox, False, False, 5);
Myb := new My_Button_Record;
Initialize (Myb, "Value as Int");
Myb.Label := Label;
Button_Cb.Connect (Myb, "clicked",
Button_Cb.To_Marshaller (Get_Value'Access), 1);
Pack_Start (Hbox, Myb, False, False, 5);
Myb := new My_Button_Record;
Initialize (Myb, "Value as Float");
Myb.Label := Label;
Button_Cb.Connect (Myb, "clicked",
Button_Cb.To_Marshaller (Get_Value'Access), 2);
Pack_Start (Hbox, Myb, False, False, 5);
Pack_Start (VBox, Label, False, False, 0);
Set_Text (Label, "0");
Show_All (Frame);
end Run;
end Create_Spin;
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