| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkSGTransform_DEFINED |
| #define SkSGTransform_DEFINED |
| |
| #include "SkSGEffectNode.h" |
| |
| #include "SkMatrix.h" |
| #include "SkMatrix44.h" |
| |
| namespace sksg { |
| |
| /** |
| * Transformations base class. |
| */ |
| class Transform : public Node { |
| public: |
| // Compose T = A x B |
| static sk_sp<Transform> MakeConcat(sk_sp<Transform> a, sk_sp<Transform> b); |
| |
| protected: |
| Transform(); |
| |
| virtual bool is44() const = 0; |
| |
| virtual SkMatrix asMatrix () const = 0; |
| virtual SkMatrix44 asMatrix44() const = 0; |
| |
| private: |
| friend class TransformPriv; |
| |
| using INHERITED = Node; |
| }; |
| |
| /** |
| * Concrete, SkMatrix-backed transformation. |
| */ |
| class Matrix final : public Transform { |
| public: |
| static sk_sp<Matrix> Make(const SkMatrix& m); |
| |
| SG_ATTRIBUTE(Matrix, SkMatrix, fMatrix) |
| |
| protected: |
| explicit Matrix(const SkMatrix&); |
| |
| SkRect onRevalidate(InvalidationController*, const SkMatrix&) override; |
| |
| bool is44() const override { return false; } |
| |
| SkMatrix asMatrix () const override; |
| SkMatrix44 asMatrix44() const override; |
| |
| private: |
| SkMatrix fMatrix; |
| |
| using INHERITED = Transform; |
| }; |
| |
| /** |
| * Concrete, SkMatrix44-backed transformation. |
| */ |
| class Matrix44 final : public Transform { |
| public: |
| static sk_sp<Matrix44> Make(const SkMatrix44& m); |
| |
| SG_ATTRIBUTE(Matrix, SkMatrix44, fMatrix) |
| |
| protected: |
| explicit Matrix44(const SkMatrix44&); |
| |
| SkRect onRevalidate(InvalidationController*, const SkMatrix&) override; |
| |
| bool is44() const override { return true; } |
| |
| SkMatrix asMatrix () const override; |
| SkMatrix44 asMatrix44() const override; |
| |
| private: |
| SkMatrix44 fMatrix; |
| |
| using INHERITED = Transform; |
| }; |
| |
| /** |
| * Concrete Effect node, binding a Transform to a RenderNode. |
| */ |
| class TransformEffect final : public EffectNode { |
| public: |
| static sk_sp<TransformEffect> Make(sk_sp<RenderNode> child, sk_sp<Transform> transform) { |
| return child && transform |
| ? sk_sp<TransformEffect>(new TransformEffect(std::move(child), std::move(transform))) |
| : nullptr; |
| } |
| |
| static sk_sp<TransformEffect> Make(sk_sp<RenderNode> child, const SkMatrix& m) { |
| return Make(std::move(child), Matrix::Make(m)); |
| } |
| |
| ~TransformEffect() override; |
| |
| const sk_sp<Transform>& getTransform() const { return fTransform; } |
| |
| protected: |
| void onRender(SkCanvas*, const RenderContext*) const override; |
| |
| SkRect onRevalidate(InvalidationController*, const SkMatrix&) override; |
| |
| private: |
| TransformEffect(sk_sp<RenderNode>, sk_sp<Transform>); |
| |
| const sk_sp<Transform> fTransform; |
| |
| typedef EffectNode INHERITED; |
| }; |
| |
| } // namespace sksg |
| |
| #endif // SkSGTransform_DEFINED |