Renderer.h
1/* Copyright (C) 2026 Laurentiu-Gheorghe Crisan
2 Copyright (C) 2026 Marc Boris Duerner
3
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 As a special exception, you may use this file as part of a free
10 software library without restriction. Specifically, if other files
11 instantiate templates or use macros or inline functions from this
12 file, or you compile this file and link it with other files to
13 produce an executable, this file does not by itself cause the
14 resulting executable to be covered by the GNU General Public
15 License. This exception does not however invalidate any other
16 reasons why the executable file might be covered by the GNU Library
17 General Public License.
18
19 This library is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 Lesser General Public License for more details.
23
24 You should have received a copy of the GNU Lesser General Public
25 License along with this library; if not, write to the Free Software
26 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
27 MA 02110-1301 USA
28*/
29
30#ifndef Pt_Forms_Renderer_h
31#define Pt_Forms_Renderer_h
32
33#include <Pt/Forms/Api.h>
34#include <Pt/Forms/Style.h>
35
36namespace Pt {
37
38namespace Forms {
39
60class PT_FORMS_API Renderer : public Style::Facet
61{
62 public:
65 explicit Renderer(const std::type_info& ti, std::size_t refs = 0)
66 : Facet(ti, refs)
67 {
68 }
69
73 {
74 return onCreate();
75 }
76
77 protected:
80 virtual Renderer* onCreate() const = 0;
81};
82
83} // namespace
84
85} // namespace
86
87#endif
virtual Renderer * onCreate() const =0
Creates a new renderer of the same concrete type.
Renderer(const std::type_info &ti, std::size_t refs=0)
Constructor.
Definition Renderer.h:65
Renderer * create() const
Creates a new instance with a reference count of 0.
Definition Renderer.h:72
Represents a type-tagged, reference-counted object stored by Style.
Definition Style.h:211
Facet(const std::type_info &ti, std::size_t refs=0)
Constructor.
Definition Style.h:215
Graphical user interfaces.
Definition ActivateEvent.h:40
Core module.
Definition Allocator.h:33