skia2/experimental/sksg/geometry/SkSGPath.h
Florin Malita c75e2401a8 [sksg] Refine invalidation logic
We need to discriminate between nodes whose bounds updates contribute to the dirty
region, and nodes whose bounds changes do not.

E.g. animated shape in a group: the animated shape node bounds should yield damage,
but the ancestor group bounds should not.

To accomplish this, we refine the invalidation state:

  1) self invalidation == the node itself was invalidated, and its bounds updates
     yield damage.
  2) descendant invalidation == the node has some (self-)invalidated descendant,
     but its own bounds are not contributing damage.

Also:

  * hoist the bounding box invalidation logic into the base class (Node::revalidate)
    and update to respect the states described above.
  * remove (now-redundant) GeometryNode bbox logic.
  * update revalidation methods to return the node bbox instead of void

TBR=
Change-Id: I8023d1793fb501c945a53f2dc2d2983e5b620ade
Reviewed-on: https://skia-review.googlesource.com/90581
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
2018-01-04 00:59:20 +00:00

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/*
* 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 SkSGPath_DEFINED
#define SkSGPath_DEFINED
#include "SkSGGeometryNode.h"
#include "SkPath.h"
class SkCanvas;
class SkPaint;
namespace sksg {
/**
* Concrete Geometry node, wrapping an SkPath.
*/
class Path : public GeometryNode {
public:
static sk_sp<Path> Make() { return sk_sp<Path>(new Path(SkPath())); }
static sk_sp<Path> Make(const SkPath& r) { return sk_sp<Path>(new Path(r)); }
SG_ATTRIBUTE(Path, SkPath, fPath)
protected:
void onDraw(SkCanvas*, const SkPaint&) const override;
SkRect onRevalidate(InvalidationController*, const SkMatrix&) override;
private:
explicit Path(const SkPath&);
SkPath fPath;
};
} // namespace sksg
#endif // SkSGPath_DEFINED