1 /*
2 * Copyright 2018 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "SkSGGeometryTransform.h"
9
10 #include "SkCanvas.h"
11 #include "SkSGTransform.h"
12 #include "SkSGTransformPriv.h"
13
14 namespace sksg {
15
GeometryTransform(sk_sp<GeometryNode> child,sk_sp<Transform> transform)16 GeometryTransform::GeometryTransform(sk_sp<GeometryNode> child, sk_sp<Transform> transform)
17 : fChild(std::move(child))
18 , fTransform(std::move(transform)) {
19 this->observeInval(fChild);
20 this->observeInval(fTransform);
21 }
22
~GeometryTransform()23 GeometryTransform::~GeometryTransform() {
24 this->unobserveInval(fChild);
25 this->unobserveInval(fTransform);
26 }
27
onClip(SkCanvas * canvas,bool antiAlias) const28 void GeometryTransform::onClip(SkCanvas* canvas, bool antiAlias) const {
29 canvas->clipPath(fTransformedPath, SkClipOp::kIntersect, antiAlias);
30 }
31
onDraw(SkCanvas * canvas,const SkPaint & paint) const32 void GeometryTransform::onDraw(SkCanvas* canvas, const SkPaint& paint) const {
33 canvas->drawPath(fTransformedPath, paint);
34 }
35
onRevalidate(InvalidationController * ic,const SkMatrix & ctm)36 SkRect GeometryTransform::onRevalidate(InvalidationController* ic, const SkMatrix& ctm) {
37 SkASSERT(this->hasInval());
38
39 // We don't care about matrix reval results.
40 fTransform->revalidate(ic, ctm);
41 const auto m = TransformPriv::As<SkMatrix>(fTransform);
42
43 auto bounds = fChild->revalidate(ic, ctm);
44 fTransformedPath = fChild->asPath();
45 fTransformedPath.transform(m);
46 fTransformedPath.shrinkToFit();
47
48 m.mapRect(&bounds);
49 return bounds;
50 }
51
onAsPath() const52 SkPath GeometryTransform::onAsPath() const {
53 return fTransformedPath;
54 }
55
56 } // namespace sksg
57