1/*
2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
3 * (C) 2000 Antti Koivisto (koivisto@kde.org)
4 * (C) 2000 Dirk Mueller (mueller@kde.org)
5 * Copyright (C) 2003, 2005-2008, 2017 Apple Inc. All rights reserved.
6 * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
17 *
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB. If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
22 *
23 */
24
25#pragma once
26
27#include "TransformOperation.h"
28#include <wtf/Ref.h>
29
30namespace WebCore {
31
32class IdentityTransformOperation final : public TransformOperation {
33public:
34 static Ref<IdentityTransformOperation> create()
35 {
36 return adoptRef(*new IdentityTransformOperation());
37 }
38
39 Ref<TransformOperation> clone() const override
40 {
41 return create();
42 }
43
44private:
45 bool isIdentity() const override { return true; }
46
47 bool operator==(const TransformOperation& o) const override
48 {
49 return isSameType(o);
50 }
51
52 bool apply(TransformationMatrix&, const FloatSize&) const override
53 {
54 return false;
55 }
56
57 Ref<TransformOperation> blend(const TransformOperation*, double, bool = false) override
58 {
59 return *this;
60 }
61
62 void dump(WTF::TextStream&) const final;
63
64 IdentityTransformOperation()
65 : TransformOperation(IDENTITY)
66 {
67 }
68};
69
70} // namespace WebCore
71
72SPECIALIZE_TYPE_TRAITS_TRANSFORMOPERATION(WebCore::IdentityTransformOperation, type() == WebCore::TransformOperation::IDENTITY)
73