/usr/share/ada/adainclude/gtkglada/gtk-glarea.ads is in libgtkglada2.24.1-dev 2.24.1-2.
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-- GtkAda - Ada95 binding for the Gimp Toolkit --
-- --
-- Copyright (C) 1998-2000 E. Briot, J. Brobecker and A. Charlet --
-- Copyright (C) 2000-2008, 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. --
-- --
-----------------------------------------------------------------------
-- <description>
--
-- This widget is derived from Gtk_Drawing_Area and provides an area where
-- it is possible to use the openGL API.
--
-- </description>
-- <c_version>gtkglarea 1.2.2</c_version>
-- <group>Drawing</group>
with Gtk.Drawing_Area;
with Gdk.GL; use Gdk.GL;
package Gtk.GLArea is
type Gtk_GLArea_Record is
new Gtk.Drawing_Area.Gtk_Drawing_Area_Record with private;
type Gtk_GLArea is access all Gtk_GLArea_Record'Class;
type Attributes_Array is array (Natural range <>) of GL_Configs;
-- Note: as opposed to what exists in C, you don't need to have
-- the last element in the array be GDK_GL_NONE. This is done
-- transparently by GtkAda itself.
procedure Gtk_New (Widget : out Gtk_GLArea;
Attr_List : Attributes_Array);
-- Make an OpenGL widget, Attr_List is passed to glXChooseVisual GLX call.
-- Attr_List specifies a list of Boolean attributes and enum/integer
-- attribute/value pairs.
-- See glXChooseVisual man page for more explanation on Attr_List.
-- Widget is created with visual and colormap of the
-- requested type and GLX context is created for this widget. You
-- can't do opengl calls on widget until it has X window. X window
-- is not created until widget is realized.
procedure Initialize (Widget : access Gtk_GLArea_Record;
Attr_List : Attributes_Array);
-- Internal initialization function.
-- See the section "Creating your own widgets" in the documentation.
procedure Gtk_New
(Widget : out Gtk_GLArea;
Attr_List : Attributes_Array;
Share : access Gtk_GLArea_Record'Class);
-- Same as above.
-- Share specifies the widget with which to share display lists and
-- texture objects. A non initialized value indicates that no sharing is
-- to take place.
procedure Initialize
(Widget : access Gtk_GLArea_Record;
Attr_List : Attributes_Array;
Share : access Gtk_GLArea_Record'Class);
-- Internal initialization function.
-- See the section "Creating your own widgets" in the documentation.
function Get_Type return Gtk.Gtk_Type;
-- Return the internal value associated with a Gtk_GLArea.
function Make_Current
(Glarea : access Gtk_GLArea_Record'Class)
return Boolean;
-- Must be called before rendering into OpenGL widgets.
-- Return True if rendering to widget is possible. Rendering is not
-- possible if widget is not Gtk_GLArea widget or widget is not realized.
procedure Swap_Buffers (Glarea : access Gtk_GLArea_Record'Class);
-- Promote contents of back buffer of Glarea to front buffer.
-- The contents of front buffer become undefined.
private
type Gtk_GLArea_Record is
new Gtk.Drawing_Area.Gtk_Drawing_Area_Record with null record;
pragma Import (C, Get_Type, "gtk_gl_area_get_type");
end Gtk.GLArea;
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