1 /* 2 * Copyright (C) 1999 Antti Koivisto (koivisto (at) 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 "TranslateTransformOperation.h" 24 #include "FloatConversion.h" 25 26 namespace WebCore { 27 28 PassRefPtr<TransformOperation> TranslateTransformOperation::blend(const TransformOperation* from, double progress, bool blendToIdentity) 29 { 30 if (from && !from->isSameType(*this)) 31 return this; 32 33 if (blendToIdentity) 34 return TranslateTransformOperation::create(Length(m_x.type()).blend(m_x, narrowPrecisionToFloat(progress)), 35 Length(m_y.type()).blend(m_y, narrowPrecisionToFloat(progress)), 36 Length(m_z.type()).blend(m_z, narrowPrecisionToFloat(progress)), m_type); 37 38 const TranslateTransformOperation* fromOp = static_cast<const TranslateTransformOperation*>(from); 39 Length fromX = fromOp ? fromOp->m_x : Length(m_x.type()); 40 Length fromY = fromOp ? fromOp->m_y : Length(m_y.type()); 41 Length fromZ = fromOp ? fromOp->m_z : Length(m_z.type()); 42 return TranslateTransformOperation::create(m_x.blend(fromX, narrowPrecisionToFloat(progress)), m_y.blend(fromY, narrowPrecisionToFloat(progress)), m_z.blend(fromZ, narrowPrecisionToFloat(progress)), m_type); 43 } 44 45 } // namespace WebCore 46
