16322637c4
Matrix nodes are most often not composed outside of the DAG. Split into a basic Matrix class and a (private) ComposedMatrix subclass. TBR= Bug: skia:8340 Change-Id: I3c182e10ae5fa20d0639c1031523dba3956b75bb Reviewed-on: https://skia-review.googlesource.com/153883 Reviewed-by: Florin Malita <fmalita@chromium.org> Commit-Queue: Florin Malita <fmalita@chromium.org>
76 lines
1.7 KiB
C++
76 lines
1.7 KiB
C++
/*
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* Copyright 2017 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkSGTransform_DEFINED
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#define SkSGTransform_DEFINED
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#include "SkSGEffectNode.h"
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#include "SkMatrix.h"
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namespace sksg {
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/**
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* Concrete node, wrapping an SkMatrix, with an optional parent Matrix (to allow chaining):
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*
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* M' = parent x M
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*/
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class Matrix : public Node {
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public:
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static sk_sp<Matrix> Make(const SkMatrix& m, sk_sp<Matrix> parent = nullptr);
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SG_ATTRIBUTE(Matrix, SkMatrix, fMatrix)
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virtual const SkMatrix& getTotalMatrix() const;
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protected:
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explicit Matrix(const SkMatrix&);
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SkRect onRevalidate(InvalidationController*, const SkMatrix&) override;
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private:
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SkMatrix fMatrix;
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typedef Node INHERITED;
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};
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/**
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* Concrete Effect node, binding a Matrix to a RenderNode.
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*/
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class Transform final : public EffectNode {
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public:
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static sk_sp<Transform> Make(sk_sp<RenderNode> child, sk_sp<Matrix> matrix) {
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return child && matrix
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? sk_sp<Transform>(new Transform(std::move(child), std::move(matrix)))
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: nullptr;
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}
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static sk_sp<Transform> Make(sk_sp<RenderNode> child, const SkMatrix& m) {
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return Make(std::move(child), Matrix::Make(m));
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}
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~Transform() override;
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const sk_sp<Matrix>& getMatrix() const { return fMatrix; }
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protected:
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void onRender(SkCanvas*, const RenderContext*) const override;
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SkRect onRevalidate(InvalidationController*, const SkMatrix&) override;
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private:
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Transform(sk_sp<RenderNode>, sk_sp<Matrix>);
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const sk_sp<Matrix> fMatrix;
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typedef EffectNode INHERITED;
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};
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} // namespace sksg
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#endif // SkSGTransform_DEFINED
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