| /* |
| * Copyright (C) 2000 Lars Knoll (knoll@kde.org) |
| * (C) 2000 Antti Koivisto (koivisto@kde.org) |
| * (C) 2000 Dirk Mueller (mueller@kde.org) |
| * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. |
| * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com) |
| * |
| * 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. |
| * |
| */ |
| |
| #pragma once |
| |
| #include "LayoutSize.h" |
| #include "TransformOperation.h" |
| #include <wtf/RefPtr.h> |
| #include <wtf/Vector.h> |
| |
| namespace WebCore { |
| |
| struct BlendingContext; |
| |
| class TransformOperations { |
| WTF_MAKE_FAST_ALLOCATED; |
| public: |
| explicit TransformOperations(bool makeIdentity = false); |
| |
| bool operator==(const TransformOperations& o) const; |
| bool operator!=(const TransformOperations& o) const |
| { |
| return !(*this == o); |
| } |
| |
| void apply(const FloatSize& size, TransformationMatrix& matrix) const { apply(0, size, matrix); } |
| void apply(unsigned start, const FloatSize& size, TransformationMatrix& matrix) const |
| { |
| for (unsigned i = start; i < m_operations.size(); ++i) |
| m_operations[i]->apply(matrix, size); |
| } |
| |
| |
| // Return true if any of the operation types are 3D operation types (even if the |
| // values describe affine transforms) |
| bool has3DOperation() const |
| { |
| for (const auto& operation : m_operations) { |
| if (operation->is3DOperation()) |
| return true; |
| } |
| return false; |
| } |
| |
| bool hasMatrixOperation() const |
| { |
| return std::any_of(m_operations.begin(), m_operations.end(), [](auto operation) { |
| return operation->type() == WebCore::TransformOperation::MATRIX; |
| }); |
| } |
| |
| bool isRepresentableIn2D() const |
| { |
| for (const auto& operation : m_operations) { |
| if (!operation->isRepresentableIn2D()) |
| return false; |
| } |
| return true; |
| } |
| |
| void clear() |
| { |
| m_operations.clear(); |
| } |
| |
| bool affectedByTransformOrigin() const; |
| |
| Vector<RefPtr<TransformOperation>>& operations() { return m_operations; } |
| const Vector<RefPtr<TransformOperation>>& operations() const { return m_operations; } |
| |
| size_t size() const { return m_operations.size(); } |
| const TransformOperation* at(size_t index) const { return index < m_operations.size() ? m_operations.at(index).get() : 0; } |
| bool isInvertible(const LayoutSize& size) const |
| { |
| TransformationMatrix transform; |
| apply(size, transform); |
| return transform.isInvertible(); |
| } |
| |
| bool shouldFallBackToDiscreteAnimation(const TransformOperations&, const LayoutSize&) const; |
| |
| RefPtr<TransformOperation> createBlendedMatrixOperationFromOperationsSuffix(const TransformOperations& from, unsigned start, const BlendingContext&, const LayoutSize& referenceBoxSize) const; |
| TransformOperations blend(const TransformOperations& from, const BlendingContext&, const LayoutSize&, std::optional<unsigned> prefixLength = std::nullopt) const; |
| |
| private: |
| Vector<RefPtr<TransformOperation>> m_operations; |
| }; |
| |
| // SharedPrimitivesPrefix is used to find a shared prefix of transform function primitives (as |
| // defined by CSS Transforms Level 1 & 2). Given a series of TransformOperations in the keyframes |
| // of an animation. After update() is called with the TransformOperations of every keyframe, |
| // primitive() will return the prefix of primitives that are shared by all keyframes passed |
| // to update(). |
| class SharedPrimitivesPrefix { |
| public: |
| SharedPrimitivesPrefix() = default; |
| virtual ~SharedPrimitivesPrefix() = default; |
| void update(const TransformOperations&); |
| bool hadIncompatibleTransformFunctions() { return m_indexOfFirstMismatch.has_value(); } |
| const Vector<TransformOperation::OperationType>& primitives() const { return m_primitives; } |
| |
| private: |
| std::optional<size_t> m_indexOfFirstMismatch; |
| Vector<TransformOperation::OperationType> m_primitives; |
| }; |
| |
| WTF::TextStream& operator<<(WTF::TextStream&, const TransformOperations&); |
| |
| } // namespace WebCore |
| |