| /* |
| * 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. |
| * |
| */ |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_TRANSFORMS_TRANSFORM_OPERATIONS_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_TRANSFORMS_TRANSFORM_OPERATIONS_H_ |
| |
| #include "base/memory/scoped_refptr.h" |
| #include "third_party/blink/renderer/platform/geometry/layout_size.h" |
| #include "third_party/blink/renderer/platform/transforms/transform_operation.h" |
| #include "third_party/blink/renderer/platform/wtf/allocator/allocator.h" |
| #include "third_party/blink/renderer/platform/wtf/vector.h" |
| |
| namespace blink { |
| class FloatBox; |
| |
| class PLATFORM_EXPORT EmptyTransformOperations final { |
| DISALLOW_NEW(); |
| }; |
| |
| class PLATFORM_EXPORT TransformOperations { |
| DISALLOW_NEW(); |
| |
| public: |
| TransformOperations() = default; |
| TransformOperations(const EmptyTransformOperations&) {} |
| |
| bool operator==(const TransformOperations& o) const; |
| bool operator!=(const TransformOperations& o) const { return !(*this == o); } |
| |
| // Constructs a transformation matrix from the operations. The parameter |
| // |border_box_size| is used when computing styles that are size-dependent. |
| void Apply(const FloatSize& border_box_size, TransformationMatrix& t) const { |
| for (auto& operation : operations_) |
| operation->Apply(t, border_box_size); |
| } |
| |
| // Constructs a transformation matrix from the operations starting from index |
| // |start|. This process facilitates mixing pairwise operations for a common |
| // prefix and matrix interpolation for the remainder. The parameter |
| // |border_box_size| is used when computing styles that are size-dependent. |
| void ApplyRemaining(const FloatSize& border_box_size, |
| wtf_size_t start, |
| TransformationMatrix& t) const; |
| |
| // Return true if any of the operation types are 3D operation types (even if |
| // the values describe affine transforms) |
| bool Has3DOperation() const { |
| for (auto& operation : operations_) |
| if (operation->Is3DOperation()) |
| return true; |
| return false; |
| } |
| |
| // Return true if any of the operation types are non-perspective 3D operation |
| // types (even if the values describe affine transforms). |
| bool HasNonPerspective3DOperation() const { |
| for (auto& operation : operations_) { |
| if (operation->Is3DOperation() && |
| operation->GetType() != TransformOperation::kPerspective) |
| return true; |
| } |
| return false; |
| } |
| |
| bool PreservesAxisAlignment() const { |
| for (auto& operation : operations_) { |
| if (!operation->PreservesAxisAlignment()) |
| return false; |
| } |
| return true; |
| } |
| |
| bool IsIdentityOrTranslation() const { |
| for (auto& operation : operations_) { |
| if (!operation->IsIdentityOrTranslation()) |
| return false; |
| } |
| return true; |
| } |
| |
| // Returns true if any operation has a non-trivial component in the Z axis. |
| bool HasNonTrivial3DComponent() const { |
| for (auto& operation : operations_) { |
| if (operation->HasNonTrivial3DComponent()) |
| return true; |
| } |
| return false; |
| } |
| |
| // Returns true if any operation is perspective. |
| bool HasPerspective() const { |
| for (auto& operation : operations_) { |
| if (operation->GetType() == TransformOperation::kPerspective) |
| return true; |
| } |
| return false; |
| } |
| |
| TransformOperation::BoxSizeDependency BoxSizeDependencies( |
| wtf_size_t start = 0) const; |
| |
| wtf_size_t MatchingPrefixLength(const TransformOperations&) const; |
| |
| void clear() { operations_.clear(); } |
| |
| Vector<scoped_refptr<TransformOperation>>& Operations() { |
| return operations_; |
| } |
| const Vector<scoped_refptr<TransformOperation>>& Operations() const { |
| return operations_; |
| } |
| |
| wtf_size_t size() const { return operations_.size(); } |
| const TransformOperation* at(wtf_size_t index) const { |
| return index < operations_.size() ? operations_.at(index).get() : nullptr; |
| } |
| |
| bool BlendedBoundsForBox(const FloatBox&, |
| const TransformOperations& from, |
| const double& min_progress, |
| const double& max_progress, |
| FloatBox* bounds) const; |
| |
| scoped_refptr<TransformOperation> BlendRemainingByUsingMatrixInterpolation( |
| const TransformOperations& from, |
| wtf_size_t matching_prefix_length, |
| double progress) const; |
| |
| TransformOperations Blend(const TransformOperations& from, |
| double progress) const; |
| TransformOperations Add(const TransformOperations& addend) const; |
| TransformOperations Zoom(double factor) const; |
| |
| // Perform accumulation of |to| onto |this|, as specified in |
| // https://drafts.csswg.org/css-transforms-2/#combining-transform-lists |
| TransformOperations Accumulate(const TransformOperations& to) const; |
| |
| private: |
| Vector<scoped_refptr<TransformOperation>> operations_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_TRANSFORMS_TRANSFORM_OPERATIONS_H_ |