eb46bd892d
Introduce RenderNode::nodeAt(const SkPoint&) as the entry point for the hit-testing API. This is backed by a onNodeAt() virtual, which gets dispatched throughout the render DAG, and normally stops at the first leaf Draw node in encounters. To support the implementation, introduce a GeometryNode::contains(const SkPoint&) API. This is backed by a onContains() virtual, overridden in each concrete geometry class. Expose nodeAt() on sksg::Scene, and add some basic unit tests. Change-Id: I0c8abd9d1e51ecf2d8b4dd699f325cd636e21084 Reviewed-on: https://skia-review.googlesource.com/c/191296 Commit-Queue: Florin Malita <fmalita@chromium.org> Reviewed-by: Mike Reed <reed@google.com>
60 lines
1.5 KiB
C++
60 lines
1.5 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 SkSGTrimEffect_DEFINED
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#define SkSGTrimEffect_DEFINED
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#include "SkSGGeometryNode.h"
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#include "SkPath.h"
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#include "SkTrimPathEffect.h"
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class SkCanvas;
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class SkPaint;
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namespace sksg {
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/**
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* Concrete Geometry node, applying a trim effect to its child.
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*/
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class TrimEffect final : public GeometryNode {
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public:
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static sk_sp<TrimEffect> Make(sk_sp<GeometryNode> child) {
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return child ? sk_sp<TrimEffect>(new TrimEffect(std::move(child))) : nullptr;
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}
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~TrimEffect() override;
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SG_ATTRIBUTE(Start , SkScalar , fStart )
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SG_ATTRIBUTE(Stop , SkScalar , fStop )
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SG_ATTRIBUTE(Mode , SkTrimPathEffect::Mode, fMode )
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protected:
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void onClip(SkCanvas*, bool antiAlias) const override;
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void onDraw(SkCanvas*, const SkPaint&) const override;
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bool onContains(const SkPoint&) const override;
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SkRect onRevalidate(InvalidationController*, const SkMatrix&) override;
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SkPath onAsPath() const override;
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private:
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explicit TrimEffect(sk_sp<GeometryNode>);
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const sk_sp<GeometryNode> fChild;
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SkPath fTrimmedPath;
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SkScalar fStart = 0,
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fStop = 1;
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SkTrimPathEffect::Mode fMode = SkTrimPathEffect::Mode::kNormal;
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using INHERITED = GeometryNode;
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};
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} // namespace sksg
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#endif // SkSGTrimEffect_DEFINED
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