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180 | ------------------------------------------------------------------------------
-- GtkAda - Ada95 binding for Gtk+/Gnome --
-- --
-- Copyright (C) 1998-2000 E. Briot, J. Brobecker and A. Charlet --
-- 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. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- 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.Object; use Glib.Object;
with Interfaces.C.Pointers;
with Gtkada.Types;
package body Gdk.Property is
------------------------
-- Local declarations --
------------------------
type Local_Guchar_Array is array (Natural range <>) of aliased Guchar;
package Guchars_Ptr is new Interfaces.C.Pointers
(Index => Natural,
Element => Guchar,
Element_Array => Local_Guchar_Array,
Default_Terminator => 0);
procedure C_Free (P : Guchars_Ptr.Pointer);
pragma Import (C, C_Free, "free");
function To_Guchar_Array (Value : Local_Guchar_Array) return Guchar_Array;
pragma Inline (To_Guchar_Array);
-----------------
-- Atom_Intern --
-----------------
function Atom_Intern
(Atom_Name : String;
Only_If_Exists : Boolean := True) return Gdk.Types.Gdk_Atom
is
function Internal
(Atom_Name : String;
Only_If_Exists : Gint) return Gdk.Types.Gdk_Atom;
pragma Import (C, Internal, "gdk_atom_intern");
begin
return Internal (Atom_Name & ASCII.NUL, To_Gint (Only_If_Exists));
end Atom_Intern;
---------------
-- Atom_Name --
---------------
function Atom_Name (Atom : Gdk.Types.Gdk_Atom) return String is
function Internal
(Atom : Gdk.Types.Gdk_Atom) return Gtkada.Types.Chars_Ptr;
pragma Import (C, Internal, "gdk_atom_name");
begin
return Gtkada.Types.Value (Internal (Atom));
end Atom_Name;
------------
-- Change --
------------
procedure Change
(Window : Gdk.Gdk_Window;
Property : Gdk.Types.Gdk_Atom;
The_Type : Gdk.Types.Gdk_Atom;
Format : Gint;
Mode : Gdk_Prop_Mode;
Data : Guchar_Array)
is
procedure Internal
(Window : Gdk.Gdk_Window;
Property : Gdk.Types.Gdk_Atom;
The_Type : Gdk.Types.Gdk_Atom;
Format : Gint;
Mode : Gdk_Prop_Mode;
Data : Guchar_Array;
Nelements : Gint);
pragma Import (C, Internal, "gdk_property_change");
begin
Internal (Window, Property, The_Type, Format,
Mode, Data, Data'Length);
end Change;
---------
-- Get --
---------
procedure Get
(Window : Gdk.Gdk_Window;
Property : Gdk.Types.Gdk_Atom;
The_Type : Gdk.Types.Gdk_Atom;
Offset : Gulong;
Length : Gulong;
Pdelete : Boolean;
Actual_Property_Type : out Gdk.Types.Gdk_Atom;
Actual_Format : out Gint;
Data : out Guchar_Array_Access;
Success : out Boolean)
is
procedure Internal
(Window : Gdk_Window;
Property : Gdk.Types.Gdk_Atom;
The_Type : Gdk.Types.Gdk_Atom;
Offset : Gulong;
Length : Gulong;
Pdelete : Gint;
Actual_Property_Type : out Gdk.Types.Gdk_Atom;
Actual_Format : out Gint;
Actual_Length : out Gint;
Data : out Guchars_Ptr.Pointer;
Success : out Gint);
pragma Import (C, Internal, "ada_gdk_property_get");
Actual_Length : Gint;
Tmp_Success : Gint;
Tmp_Result : Guchars_Ptr.Pointer;
begin
Internal
(Window,
Property,
The_Type,
Offset,
Length,
Boolean'Pos (Pdelete),
Actual_Property_Type,
Actual_Format,
Actual_Length,
Tmp_Result,
Tmp_Success);
Success := Boolean'Val (Tmp_Success);
Data := new Guchar_Array'
(To_Guchar_Array
(Guchars_Ptr.Value
(Ref => Tmp_Result,
Length => Interfaces.C.ptrdiff_t (Actual_Length))));
C_Free (Tmp_Result);
end Get;
-----------------------
-- To_Guchar_Array --
-----------------------
function To_Guchar_Array
(Value : Local_Guchar_Array) return Guchar_Array
is
Result : Guchar_Array (Value'Range);
begin
for Index in Value'Range loop
Result (Index) := Value (Index);
end loop;
return Result;
end To_Guchar_Array;
end Gdk.Property;
|