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/*
* Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "platform/transforms/TranslateTransformOperation.h"
namespace blink {
PassRefPtr<TransformOperation> TranslateTransformOperation::blend(
const TransformOperation* from,
double progress,
bool blendToIdentity) {
if (from && !from->canBlendWith(*this))
return this;
const Length zeroLength(0, Fixed);
if (blendToIdentity)
return TranslateTransformOperation::create(
zeroLength.blend(m_x, progress, ValueRangeAll),
zeroLength.blend(m_y, progress, ValueRangeAll),
blink::blend(0., m_z, progress), m_type);
const TranslateTransformOperation* fromOp =
static_cast<const TranslateTransformOperation*>(from);
Length fromX = fromOp ? fromOp->m_x : zeroLength;
Length fromY = fromOp ? fromOp->m_y : zeroLength;
double fromZ = fromOp ? fromOp->m_z : 0;
return TranslateTransformOperation::create(
m_x.blend(fromX, progress, ValueRangeAll),
m_y.blend(fromY, progress, ValueRangeAll),
blink::blend(fromZ, m_z, progress), m_type);
}
bool TranslateTransformOperation::canBlendWith(
const TransformOperation& other) const {
return other.type() == Translate || other.type() == TranslateX ||
other.type() == TranslateY || other.type() == TranslateZ ||
other.type() == Translate3D;
}
PassRefPtr<TranslateTransformOperation>
TranslateTransformOperation::zoomTranslate(double factor) {
return create(m_x.zoom(factor), m_y.zoom(factor), m_z * factor, m_type);
}
} // namespace blink
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