-----------------------------------------------------------------------
-- GtkAda - Ada95 binding for Gtk+/Gnome --
-- --
-- Copyright (C) 1998-2000 E. Briot, J. Brobecker and A. Charlet --
-- Copyright (C) 2000-2011, AdaCore --
-- --
-- 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. --
-- --
-- --
-- --
-- --
-- --
-- --
-- --
-----------------------------------------------------------------------
--
-- This widget provides an empty canvas on which the application can draw
-- anything.
--
-- Note that this widget is simply an empty space, and that you need to
-- connect it to events to make it useful. For instance, you might want to do
-- one of the following :
--
-- * Connect it to "expose_event": The handlers are called every time the
-- widget needs to be redrawn. You can then draw anything you want on the
-- canvas, after getting its associated window with a call to
-- Gtk.Widget.Get_Window. Note that the event mask is automatically set up to
-- accept expose_events.
--
-- * Connect it to "button_press_event" and "button_release_event" events,
-- when you want it to react to user input. Note that you need to set up the
-- event mask with a call to Gtk.Widget.Set_Events.
--
-- See also the Double_Buffer widget provided in the GtkAda examples for an
-- advanced example that demonstrates how to use double buffering, to avoid
-- flickering in your drawings.
--
--
-- Drawing
-- libart_demo.adb
pragma Warnings (Off, "*is already use-visible*");
with Glib; use Glib;
with Glib.Types; use Glib.Types;
with Gtk.Buildable; use Gtk.Buildable;
with Gtk.Widget; use Gtk.Widget;
package Gtk.Drawing_Area is
type Gtk_Drawing_Area_Record is new Gtk_Widget_Record with null record;
type Gtk_Drawing_Area is access all Gtk_Drawing_Area_Record'Class;
------------------
-- Constructors --
------------------
procedure Gtk_New (Drawing_Area : out Gtk_Drawing_Area);
procedure Initialize
(Drawing_Area : access Gtk_Drawing_Area_Record'Class);
function Get_Type return Glib.GType;
pragma Import (C, Get_Type, "gtk_drawing_area_get_type");
-------------
-- Methods --
-------------
procedure Size
(Drawing_Area : access Gtk_Drawing_Area_Record;
Width : Gint;
Height : Gint);
pragma Obsolescent (Size);
-- Request a new size for the area. This queues a resize request for the
-- area.
-- Deprecated
----------------
-- Interfaces --
----------------
-- This class implements several interfaces. See Glib.Types
--
-- - "Buildable"
package Implements_Buildable is new Glib.Types.Implements
(Gtk.Buildable.Gtk_Buildable, Gtk_Drawing_Area_Record, Gtk_Drawing_Area);
function "+"
(Widget : access Gtk_Drawing_Area_Record'Class)
return Gtk.Buildable.Gtk_Buildable
renames Implements_Buildable.To_Interface;
function "-"
(Interf : Gtk.Buildable.Gtk_Buildable)
return Gtk_Drawing_Area
renames Implements_Buildable.To_Object;
end Gtk.Drawing_Area;