| /* |
| * 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 "TransformOperations.h" |
| |
| #include "IdentityTransformOperation.h" |
| #include "Matrix3DTransformOperation.h" |
| #include <algorithm> |
| #include <wtf/text/TextStream.h> |
| |
| namespace WebCore { |
| |
| TransformOperations::TransformOperations(bool makeIdentity) |
| { |
| if (makeIdentity) |
| m_operations.append(IdentityTransformOperation::create()); |
| } |
| |
| bool TransformOperations::operator==(const TransformOperations& o) const |
| { |
| if (m_operations.size() != o.m_operations.size()) |
| return false; |
| |
| unsigned s = m_operations.size(); |
| for (unsigned i = 0; i < s; i++) { |
| if (*m_operations[i] != *o.m_operations[i]) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool TransformOperations::operationsMatch(const TransformOperations& other) const |
| { |
| size_t numOperations = operations().size(); |
| // If the sizes of the function lists don't match, the lists don't match |
| if (numOperations != other.operations().size()) |
| return false; |
| |
| // If the types of each function are not the same, the lists don't match |
| for (size_t i = 0; i < numOperations; ++i) { |
| if (!operations()[i]->isSameType(*other.operations()[i])) |
| return false; |
| } |
| return true; |
| } |
| |
| bool TransformOperations::affectedByTransformOrigin() const |
| { |
| for (const auto& operation : m_operations) { |
| if (operation->isAffectedByTransformOrigin()) |
| return true; |
| } |
| return false; |
| } |
| |
| TransformOperations TransformOperations::blendByMatchingOperations(const TransformOperations& from, const double& progress) const |
| { |
| TransformOperations result; |
| |
| unsigned fromSize = from.operations().size(); |
| unsigned toSize = operations().size(); |
| unsigned size = std::max(fromSize, toSize); |
| for (unsigned i = 0; i < size; i++) { |
| RefPtr<TransformOperation> fromOperation = (i < fromSize) ? from.operations()[i].get() : nullptr; |
| RefPtr<TransformOperation> toOperation = (i < toSize) ? operations()[i].get() : nullptr; |
| RefPtr<TransformOperation> blendedOperation = toOperation ? toOperation->blend(fromOperation.get(), progress) : (fromOperation ? RefPtr<TransformOperation>(fromOperation->blend(nullptr, progress, true)) : nullptr); |
| if (blendedOperation) |
| result.operations().append(blendedOperation); |
| else { |
| RefPtr<TransformOperation> identityOperation = IdentityTransformOperation::create(); |
| if (progress > 0.5) |
| result.operations().append(toOperation ? toOperation : identityOperation); |
| else |
| result.operations().append(fromOperation ? fromOperation : identityOperation); |
| } |
| } |
| |
| return result; |
| } |
| |
| TransformOperations TransformOperations::blendByUsingMatrixInterpolation(const TransformOperations& from, double progress, const LayoutSize& size) const |
| { |
| TransformOperations result; |
| |
| // Convert the TransformOperations into matrices |
| TransformationMatrix fromTransform; |
| TransformationMatrix toTransform; |
| from.apply(size, fromTransform); |
| apply(size, toTransform); |
| |
| toTransform.blend(fromTransform, progress); |
| |
| // Append the result |
| result.operations().append(Matrix3DTransformOperation::create(toTransform)); |
| |
| return result; |
| } |
| |
| TransformOperations TransformOperations::blend(const TransformOperations& from, double progress, const LayoutSize& size) const |
| { |
| if (from == *this) |
| return *this; |
| |
| if (from.size() && from.operationsMatch(*this)) |
| return blendByMatchingOperations(from, progress); |
| |
| return blendByUsingMatrixInterpolation(from, progress, size); |
| } |
| |
| TextStream& operator<<(TextStream& ts, const TransformOperations& ops) |
| { |
| for (const auto& operation : ops.operations()) |
| ts << *operation; |
| return ts; |
| } |
| |
| } // namespace WebCore |