1/*
2 * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
3 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 *
20 */
21
22#include "config.h"
23#include "MatrixTransformOperation.h"
24
25#include <algorithm>
26#include <wtf/text/TextStream.h>
27
28namespace WebCore {
29
30bool MatrixTransformOperation::operator==(const TransformOperation& other) const
31{
32 if (!isSameType(other))
33 return false;
34 const MatrixTransformOperation& m = downcast<MatrixTransformOperation>(other);
35 return m_a == m.m_a && m_b == m.m_b && m_c == m.m_c && m_d == m.m_d && m_e == m.m_e && m_f == m.m_f;
36}
37
38Ref<TransformOperation> MatrixTransformOperation::blend(const TransformOperation* from, double progress, bool blendToIdentity)
39{
40 auto createOperation = [] (TransformationMatrix& to, TransformationMatrix& from, double progress) {
41 to.blend(from, progress);
42 return MatrixTransformOperation::create(to);
43 };
44
45 if (from && !from->isSameType(*this))
46 return *this;
47
48 // convert the TransformOperations into matrices
49 TransformationMatrix fromT;
50 TransformationMatrix toT(m_a, m_b, m_c, m_d, m_e, m_f);
51 if (from) {
52 const MatrixTransformOperation& m = downcast<MatrixTransformOperation>(*from);
53 fromT.setMatrix(m.m_a, m.m_b, m.m_c, m.m_d, m.m_e, m.m_f);
54 }
55
56 if (blendToIdentity)
57 return createOperation(fromT, toT, progress);
58 return createOperation(toT, fromT, progress);
59}
60
61void MatrixTransformOperation::dump(TextStream& ts) const
62{
63 ts << "("
64 << TextStream::FormatNumberRespectingIntegers(m_a) << ", "
65 << TextStream::FormatNumberRespectingIntegers(m_b) << ", "
66 << TextStream::FormatNumberRespectingIntegers(m_c) << ", "
67 << TextStream::FormatNumberRespectingIntegers(m_d) << ", "
68 << TextStream::FormatNumberRespectingIntegers(m_e) << ", "
69 << TextStream::FormatNumberRespectingIntegers(m_f) << ")";
70}
71
72} // namespace WebCore
73