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 "platform/transforms/TranslateTransformOperation.h"
24
25namespace WebCore {
26
27PassRefPtr<TransformOperation> TranslateTransformOperation::blend(const TransformOperation* from, double progress, bool blendToIdentity)
28{
29    if (from && !from->isSameType(*this))
30        return this;
31
32    const Length zeroLength(0, Fixed);
33    if (blendToIdentity)
34        return TranslateTransformOperation::create(zeroLength.blend(m_x, progress, ValueRangeAll), zeroLength.blend(m_y, progress, ValueRangeAll), zeroLength.blend(m_z, progress, ValueRangeAll), m_type);
35
36    const TranslateTransformOperation* fromOp = static_cast<const TranslateTransformOperation*>(from);
37    Length fromX = fromOp ? fromOp->m_x : zeroLength;
38    Length fromY = fromOp ? fromOp->m_y : zeroLength;
39    Length fromZ = fromOp ? fromOp->m_z : zeroLength;
40    return TranslateTransformOperation::create(m_x.blend(fromX, progress, ValueRangeAll), m_y.blend(fromY, progress, ValueRangeAll), m_z.blend(fromZ, progress, ValueRangeAll), m_type);
41}
42
43} // namespace WebCore
44