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>
114 lines
3.3 KiB
C++
114 lines
3.3 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 SkSGRect_DEFINED
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#define SkSGRect_DEFINED
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#include "SkSGGeometryNode.h"
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#include "SkPath.h"
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#include "SkRect.h"
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#include "SkRRect.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, wrapping an SkRect.
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*/
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class Rect final : public GeometryNode {
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public:
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static sk_sp<Rect> Make() { return sk_sp<Rect>(new Rect(SkRect::MakeEmpty())); }
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static sk_sp<Rect> Make(const SkRect& r) { return sk_sp<Rect>(new Rect(r)); }
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SG_ATTRIBUTE(L, SkScalar, fRect.fLeft )
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SG_ATTRIBUTE(T, SkScalar, fRect.fTop )
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SG_ATTRIBUTE(R, SkScalar, fRect.fRight )
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SG_ATTRIBUTE(B, SkScalar, fRect.fBottom)
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SG_MAPPED_ATTRIBUTE(Direction , SkPath::Direction, fAttrContaier)
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SG_MAPPED_ATTRIBUTE(InitialPointIndex, uint8_t , fAttrContaier)
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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 Rect(const SkRect&);
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SkRect fRect;
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struct AttrContainer {
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uint8_t fDirection : 1;
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uint8_t fInitialPointIndex : 2;
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SkPath::Direction getDirection() const {
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return static_cast<SkPath::Direction>(fDirection);
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}
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void setDirection(SkPath::Direction dir) { fDirection = SkTo<uint8_t>(dir); }
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uint8_t getInitialPointIndex() const { return fInitialPointIndex; }
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void setInitialPointIndex(uint8_t idx) { fInitialPointIndex = idx; }
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};
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AttrContainer fAttrContaier = { SkPath::kCW_Direction, 0 };
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using INHERITED = GeometryNode;
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};
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/**
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* Concrete Geometry node, wrapping an SkRRect.
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*/
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class RRect final : public GeometryNode {
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public:
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static sk_sp<RRect> Make() { return sk_sp<RRect>(new RRect(SkRRect())); }
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static sk_sp<RRect> Make(const SkRRect& rr) { return sk_sp<RRect>(new RRect(rr)); }
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SG_ATTRIBUTE(RRect, SkRRect, fRRect)
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SG_MAPPED_ATTRIBUTE(Direction , SkPath::Direction, fAttrContaier)
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SG_MAPPED_ATTRIBUTE(InitialPointIndex, uint8_t , fAttrContaier)
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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 RRect(const SkRRect&);
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SkRRect fRRect;
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struct AttrContainer {
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uint8_t fDirection : 1;
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uint8_t fInitialPointIndex : 2;
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SkPath::Direction getDirection() const {
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return static_cast<SkPath::Direction>(fDirection);
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}
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void setDirection(SkPath::Direction dir) { fDirection = SkTo<uint8_t>(dir); }
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uint8_t getInitialPointIndex() const { return fInitialPointIndex; }
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void setInitialPointIndex(uint8_t idx) { fInitialPointIndex = idx; }
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};
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AttrContainer fAttrContaier = { SkPath::kCW_Direction, 0 };
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using INHERITED = GeometryNode;
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};
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} // namespace sksg
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#endif // SkSGRect_DEFINED
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