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 "SkewTransformOperation.h"
24
25#include "AnimationUtilities.h"
26#include <wtf/text/TextStream.h>
27
28namespace WebCore {
29
30bool SkewTransformOperation::operator==(const TransformOperation& other) const
31{
32 if (!isSameType(other))
33 return false;
34 const SkewTransformOperation& s = downcast<SkewTransformOperation>(other);
35 return m_angleX == s.m_angleX && m_angleY == s.m_angleY;
36}
37
38Ref<TransformOperation> SkewTransformOperation::blend(const TransformOperation* from, double progress, bool blendToIdentity)
39{
40 if (from && !from->isSameType(*this))
41 return *this;
42
43 if (blendToIdentity)
44 return SkewTransformOperation::create(WebCore::blend(m_angleX, 0.0, progress), WebCore::blend(m_angleY, 0.0, progress), type());
45
46 const SkewTransformOperation* fromOp = downcast<SkewTransformOperation>(from);
47 double fromAngleX = fromOp ? fromOp->m_angleX : 0;
48 double fromAngleY = fromOp ? fromOp->m_angleY : 0;
49 return SkewTransformOperation::create(WebCore::blend(fromAngleX, m_angleX, progress), WebCore::blend(fromAngleY, m_angleY, progress), type());
50}
51
52void SkewTransformOperation::dump(TextStream& ts) const
53{
54 ts << type() << "(" << TextStream::FormatNumberRespectingIntegers(m_angleX) << "deg, " << TextStream::FormatNumberRespectingIntegers(m_angleY) << "deg)";
55}
56
57} // namespace WebCore
58