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393 | -- --
-- package Gtk.Widget.Styles Copyright (c) Dmitry A. Kazakov --
-- Implementation Luebeck --
-- Summer, 2006 --
-- --
-- Last revision : 12:32 10 Jun 2003 --
-- --
-- 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.Properties.Creation; use GLib.Properties.Creation;
with Gtk.Missed; use Gtk.Missed;
with System.Address_To_Access_Conversions;
package body Gtk.Widget.Styles is
use System;
function Class_List_Style_Properties
( Class : GObject_Class
) return Param_Spec_Array is
type Flat_Array is array (Positive) of aliased Param_Spec;
pragma Convention (C, Flat_Array);
type Flat_Array_Ptr is access all Flat_Array;
pragma Convention (C, Flat_Array_Ptr);
procedure G_Free (Mem : Flat_Array_Ptr);
pragma Import (C, G_Free, "g_free");
function Internal
( Class : GObject_Class;
N_Properties : access GUInt
) return Flat_Array_Ptr;
pragma Import
( C,
Internal,
"gtk_widget_class_list_style_properties"
);
Count : aliased GUInt;
List : constant Flat_Array_Ptr := Internal (Class, Count'Access);
begin
declare
Result : Param_Spec_Array (1..Natural (Count));
begin
for Index in Result'Range loop
Result (Index) := List (Index);
end loop;
G_Free (List);
return Result;
end;
end Class_List_Style_Properties;
function Generic_Style_Get
( Widget : not null access Gtk_Widget_Record'Class;
Property_Name : String
) return Ada_Type is
Value : GValue;
begin
Init (Value, GTK_Type);
Style_Get_Property (Widget, Property_Name, Value);
declare
Result : constant Ada_Type := Get (Value);
begin
Unset (Value);
return Result;
end;
end Generic_Style_Get;
function Get_Path
( Widget : not null access Gtk_Widget_Record'Class;
Reversed : Boolean := False
) return UTF8_String is
use Interfaces.C.Strings;
procedure Get_Direct
( Widget : Address;
Path_Length : Address := Null_Address;
Path : out Chars_Ptr;
Path_Reversed : Address := Null_Address
);
pragma Import (C, Get_Direct, "gtk_widget_path");
procedure Get_Reversed
( Widget : Address;
Path_Length : Address := Null_Address;
Path : Address := Null_Address;
Path_Reversed : out Chars_Ptr
);
pragma Import (C, Get_Reversed, "gtk_widget_path");
Path : Chars_Ptr;
begin
if Reversed then
Get_Reversed
( Get_Object (Widget),
Path_Reversed => Path
);
else
Get_Direct
( Get_Object (Widget),
Path => Path
);
end if;
declare
Result : constant String := Value (Path);
begin
Free (Path);
return Result;
end;
end Get_Path;
function Get_Class_Path
( Widget : not null access Gtk_Widget_Record'Class;
Reversed : Boolean := False
) return UTF8_String is
use Interfaces.C.Strings;
procedure Get_Direct
( Widget : Address;
Path_Length : Address := Null_Address;
Path : out Chars_Ptr;
Path_Reversed : Address := Null_Address
);
pragma Import (C, Get_Direct, "gtk_widget_class_path");
procedure Get_Reversed
( Widget : Address;
Path_Length : Address := Null_Address;
Path : Address := Null_Address;
Path_Reversed : out Chars_Ptr
);
pragma Import (C, Get_Reversed, "gtk_widget_class_path");
Path : Chars_Ptr;
begin
if Reversed then
Get_Reversed
( Get_Object (Widget),
Path_Reversed => Path
);
else
Get_Direct
( Get_Object (Widget),
Path => Path
);
end if;
declare
Result : constant String := Value (Path);
begin
Free (Path);
return Result;
end;
end Get_Class_Path;
function Boolean_Type return GType is
begin
return GType_Boolean;
end Boolean_Type;
function Style_Get_Boolean_Impl is
new Generic_Style_Get
( Boolean_Type,
Boolean,
Get_Boolean
);
function Style_Get
( Widget : not null access Gtk_Widget_Record'Class;
Property_Name : UTF8_String
) return Boolean renames Style_Get_Boolean_Impl;
function Style_Get
( Widget : not null access Gtk_Widget_Record'Class;
Property_Name : UTF8_String;
Default : Gdk_Color
) return Gdk_Color is
package Conversions is
new System.Address_To_Access_Conversions (Gdk_Color);
use Conversions;
Result : Gdk_Color := Default;
Value : GValue;
Ptr : Address;
begin
Init (Value, Gdk_Color_Type);
Style_Get_Property (Widget, Property_Name, Value);
Ptr := Get_Boxed (Value);
if Ptr /= Null_Address then
Result := To_Pointer (Ptr).all;
end if;
Unset (Value);
return Result;
-- declare
-- Value : Gdk_Color := Ptr.all;
-- begin
-- Color_Free (Ptr);
-- return Value;
-- end;
-- end if;
-- type Gdk_Color_Ptr is access all Gdk_Color;
-- pragma Convention (C, Gdk_Color_Ptr);
-- procedure Internal
-- ( Widget : Address;
-- Property_Name : Property;
-- Value : out Gdk_Color_Ptr;
-- List_End : Address := Null_Address
-- );
-- pragma Import (C, Internal, "gtk_widget_style_get");
-- procedure Color_Free (Color : Gdk_Color_Ptr);
-- pragma Import (C, Color_Free, "gdk_color_free");
-- Ptr : Gdk_Color_Ptr;
-- begin
-- Internal
-- ( Get_Object (Widget),
-- Build (Property_Name),
-- Ptr
-- );
-- if Ptr = null then
-- return Default;
-- else
-- declare
-- Value : Gdk_Color := Ptr.all;
-- begin
-- Color_Free (Ptr);
-- return Value;
-- end;
-- end if;
end Style_Get;
function Char_Type return GType is
begin
return GType_Char;
end Char_Type;
function Style_Get_Char_Impl is
new Generic_Style_Get
( Char_Type,
GChar,
Get_Char
);
function Style_Get
( Widget : not null access Gtk_Widget_Record'Class;
Property_Name : UTF8_String
) return GChar renames Style_Get_Char_Impl;
function UChar_Type return GType is
begin
return GType_UChar;
end UChar_Type;
function Style_Get_UChar_Impl is
new Generic_Style_Get
( UChar_Type,
GUChar,
Get_UChar
);
function Style_Get
( Widget : not null access Gtk_Widget_Record'Class;
Property_Name : UTF8_String
) return GUChar renames Style_Get_UChar_Impl;
function Int_Type return GType is
begin
return GType_Int;
end Int_Type;
function Style_Get_Int_Impl is
new Generic_Style_Get
( Int_Type,
GInt,
Get_Int
);
function Style_Get
( Widget : not null access Gtk_Widget_Record'Class;
Property_Name : UTF8_String
) return GInt renames Style_Get_Int_Impl;
function UInt_Type return GType is
begin
return GType_UInt;
end UInt_Type;
function Style_Get_UInt_Impl is
new Generic_Style_Get
( UInt_Type,
GUInt,
Get_UInt
);
function Style_Get
( Widget : not null access Gtk_Widget_Record'Class;
Property_Name : UTF8_String
) return GUInt renames Style_Get_UInt_Impl;
function Long_Type return GType is
begin
return GType_Long;
end Long_Type;
function Style_Get_Long_Impl is
new Generic_Style_Get
( Long_Type,
GLong,
Get_Long
);
function Style_Get
( Widget : not null access Gtk_Widget_Record'Class;
Property_Name : UTF8_String
) return GLong renames Style_Get_Long_Impl;
function ULong_Type return GType is
begin
return GType_ULong;
end ULong_Type;
function Style_Get_ULong_Impl is
new Generic_Style_Get
( ULong_Type,
GULong,
Get_ULong
);
function Style_Get
( Widget : not null access Gtk_Widget_Record'Class;
Property_Name : UTF8_String
) return GULong renames Style_Get_ULong_Impl;
function Float_Type return GType is
begin
return GType_Float;
end Float_Type;
function Style_Get_Float_Impl is
new Generic_Style_Get
( Float_Type,
GFloat,
Get_Float
);
function Style_Get
( Widget : not null access Gtk_Widget_Record'Class;
Property_Name : UTF8_String
) return GFloat renames Style_Get_Float_Impl;
function GDouble_Type return GType is
begin
return GType_Double;
end GDouble_Type;
function Style_Get_GDouble_Impl is
new Generic_Style_Get
( GDouble_Type,
GDouble,
Get_Double
);
function Style_Get
( Widget : not null access Gtk_Widget_Record'Class;
Property_Name : UTF8_String
) return GDouble renames Style_Get_GDouble_Impl;
function String_Type return GType is
begin
return GType_String;
end String_Type;
function Style_Get_String_Impl is
new Generic_Style_Get
( String_Type,
UTF8_String,
Get_String
);
function Style_Get
( Widget : not null access Gtk_Widget_Record'Class;
Property_Name : UTF8_String
) return UTF8_String renames Style_Get_String_Impl;
function Style_Get
( Widget : not null access Gtk_Widget_Record'Class;
Property_Name : UTF8_String
) return GValue is
Class : constant GObject_Class :=
Class_From_Type (Widget.Get_Type);
Parameter : Param_Spec;
Value : GValue;
begin
Parameter := Find_Style_Property (Class, Property_Name);
if Parameter = null then
Init (Value, GType_None);
else
Init (Value, Value_Type (Parameter));
Style_Get_Property (Widget, Property_Name, Value);
end if;
return Value;
end Style_Get;
end Gtk.Widget.Styles;
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