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118 | -- Ada_GUI implementation based on Gnoga. Adapted 2021
-- --
-- GNOGA - The GNU Omnificent GUI for Ada --
-- --
-- G N O G A . G U I . E L E M E N T . C A N V A S --
-- --
-- S p e c --
-- --
-- --
-- Copyright (C) 2014 David Botton --
-- --
-- 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 --
-- MERCHANTABILITY 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/>. --
-- --
-- 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. --
-- --
-- For more information please go to http://www.gnoga.com --
------------------------------------------------------------------------------
with Ada.Finalization;
package Ada_GUI.Gnoga.Gui.Element.Canvas is
-------------------------------------------------------------------------
-- Canvas_Types
-------------------------------------------------------------------------
type Canvas_Type is new Gnoga.Gui.Element.Element_Type with private;
type Canvas_Access is access all Canvas_Type;
type Pointer_To_Canvas_Class is access all Canvas_Type'Class;
-------------------------------------------------------------------------
-- Canvas_Type - Creation Methods
-------------------------------------------------------------------------
procedure Create (Canvas : in out Canvas_Type;
Parent : in out Gnoga.Gui.Base_Type'Class;
Width : in Integer;
Height : in Integer;
ID : in String := "");
-- Create a Canvas container
-------------------------------------------------------------------------
-- Context_Types
-------------------------------------------------------------------------
type Context_Type is
new Ada.Finalization.Limited_Controlled with private;
type Context_Access is access all Context_Type;
type Pointer_To_Context_Class is access all Context_Type'Class;
overriding procedure Finalize (Object : in out Context_Type);
-- Clear browser reference to created context
-------------------------------------------------------------------------
-- Context_Type - Properties
-------------------------------------------------------------------------
procedure Property (Context : in out Context_Type;
Name : in String;
Value : in String);
procedure Property (Context : in out Context_Type;
Name : in String;
Value : in Integer);
procedure Property (Context : in out Context_Type;
Name : in String;
Value : in Boolean);
procedure Property (Context : in out Context_Type;
Name : in String;
Value : in Float);
function Property (Context : Context_Type; Name : String) return String;
function Property (Context : Context_Type; Name : String) return Integer;
function Property (Context : Context_Type; Name : String) return Boolean;
function Property (Context : Context_Type; Name : String) return Float;
-------------------------------------------------------------------------
-- Context_Type - Methods
-------------------------------------------------------------------------
procedure Execute (Context : in out Context_Type; Method : String);
function Execute (Context : Context_Type; Method : String)
return String;
-- Internal Methods --
function ID (Context : Context_Type) return String;
function Connection_ID (Context : Context_Type)
return Gnoga.Connection_ID;
private
type Canvas_Type is new Gnoga.Gui.Element.Element_Type with null record;
type Context_Type is
new Ada.Finalization.Limited_Controlled with
record
Connection_ID : Gnoga.Connection_ID :=
Gnoga.No_Connection;
Context_ID : Gnoga.Web_ID;
end record;
end Ada_GUI.Gnoga.Gui.Element.Canvas;
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