| /* |
| * 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 "third_party/blink/renderer/platform/transforms/skew_transform_operation.h" |
| |
| #include "third_party/blink/renderer/platform/geometry/blend.h" |
| |
| namespace blink { |
| |
| scoped_refptr<TransformOperation> SkewTransformOperation::Accumulate( |
| const TransformOperation& other) { |
| DCHECK(other.CanBlendWith(*this)); |
| const auto& skew_other = To<SkewTransformOperation>(other); |
| return SkewTransformOperation::Create(angle_x_ + skew_other.angle_x_, |
| angle_y_ + skew_other.angle_y_, type_); |
| } |
| |
| scoped_refptr<TransformOperation> SkewTransformOperation::Blend( |
| const TransformOperation* from, |
| double progress, |
| bool blend_to_identity) { |
| DCHECK(!from || CanBlendWith(*from)); |
| |
| if (blend_to_identity) |
| return SkewTransformOperation::Create(blink::Blend(angle_x_, 0.0, progress), |
| blink::Blend(angle_y_, 0.0, progress), |
| type_); |
| |
| const SkewTransformOperation* from_op = |
| static_cast<const SkewTransformOperation*>(from); |
| double from_angle_x = from_op ? from_op->angle_x_ : 0; |
| double from_angle_y = from_op ? from_op->angle_y_ : 0; |
| return SkewTransformOperation::Create( |
| blink::Blend(from_angle_x, angle_x_, progress), |
| blink::Blend(from_angle_y, angle_y_, progress), type_); |
| } |
| |
| } // namespace blink |
