| /* |
| * 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 "config.h" |
| #include "SkewTransformOperation.h" |
| |
| namespace WebCore { |
| |
| PassRefPtr<TransformOperation> SkewTransformOperation::blend(const TransformOperation* from, double progress, bool blendToIdentity) |
| { |
| if (from && !from->isSameType(*this)) |
| return this; |
| |
| if (blendToIdentity) |
| return SkewTransformOperation::create(m_angleX - m_angleX * progress, m_angleY - m_angleY * progress, m_type); |
| |
| const SkewTransformOperation* fromOp = static_cast<const SkewTransformOperation*>(from); |
| double fromAngleX = fromOp ? fromOp->m_angleX : 0; |
| double fromAngleY = fromOp ? fromOp->m_angleY : 0; |
| return SkewTransformOperation::create(fromAngleX + (m_angleX - fromAngleX) * progress, fromAngleY + (m_angleY - fromAngleY) * progress, m_type); |
| } |
| |
| } // namespace WebCore |
