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58 lines
2.3 KiB
C++
58 lines
2.3 KiB
C++
/*
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* Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
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* Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#include "flutter/sky/engine/platform/transforms/ScaleTransformOperation.h"
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#include "flutter/sky/engine/platform/animation/AnimationUtilities.h"
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namespace blink {
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PassRefPtr<TransformOperation> ScaleTransformOperation::blend(const TransformOperation* from, double progress, bool blendToIdentity)
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{
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if (from && !from->canBlendWith(*this))
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return this;
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if (blendToIdentity)
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return ScaleTransformOperation::create(blink::blend(m_x, 1.0, progress),
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blink::blend(m_y, 1.0, progress),
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blink::blend(m_z, 1.0, progress), m_type);
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const ScaleTransformOperation* fromOp = static_cast<const ScaleTransformOperation*>(from);
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double fromX = fromOp ? fromOp->m_x : 1.0;
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double fromY = fromOp ? fromOp->m_y : 1.0;
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double fromZ = fromOp ? fromOp->m_z : 1.0;
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return ScaleTransformOperation::create(blink::blend(fromX, m_x, progress),
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blink::blend(fromY, m_y, progress),
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blink::blend(fromZ, m_z, progress), m_type);
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}
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bool ScaleTransformOperation::canBlendWith(const TransformOperation& other) const
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{
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return other.type() == ScaleX
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|| other.type() == ScaleY
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|| other.type() == ScaleZ
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|| other.type() == Scale3D
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|| other.type() == Scale;
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}
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} // namespace blink
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