diff options
Diffstat (limited to 'experimental/sksg/geometry/SkSGRoundEffect.cpp')
-rw-r--r-- | experimental/sksg/geometry/SkSGRoundEffect.cpp | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/experimental/sksg/geometry/SkSGRoundEffect.cpp b/experimental/sksg/geometry/SkSGRoundEffect.cpp new file mode 100644 index 0000000000..8cf9068f65 --- /dev/null +++ b/experimental/sksg/geometry/SkSGRoundEffect.cpp @@ -0,0 +1,56 @@ +/* + * Copyright 2018 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "SkSGRoundEffect.h" + +#include "SkCanvas.h" +#include "SkCornerPathEffect.h" +#include "SkStrokeRec.h" + +namespace sksg { + +RoundEffect::RoundEffect(sk_sp<GeometryNode> child) + : fChild(std::move(child)) { + this->observeInval(fChild); +} + +RoundEffect::~RoundEffect() { + this->unobserveInval(fChild); +} + +void RoundEffect::onClip(SkCanvas* canvas, bool antiAlias) const { + canvas->clipPath(fRoundedPath, SkClipOp::kIntersect, antiAlias); +} + +void RoundEffect::onDraw(SkCanvas* canvas, const SkPaint& paint) const { + SkASSERT(!paint.getPathEffect()); + + canvas->drawPath(fRoundedPath, paint); +} + +SkPath RoundEffect::onAsPath() const { + return fRoundedPath; +} + +SkRect RoundEffect::onRevalidate(InvalidationController* ic, const SkMatrix& ctm) { + SkASSERT(this->hasInval()); + + const auto childbounds = fChild->revalidate(ic, ctm); + const auto path = fChild->asPath(); + + if (auto round = SkCornerPathEffect::Make(fRadius)) { + fRoundedPath.reset(); + SkStrokeRec rec(SkStrokeRec::kHairline_InitStyle); + SkAssertResult(round->filterPath(&fRoundedPath, path, &rec, &childbounds)); + } else { + fRoundedPath = path; + } + + return fRoundedPath.computeTightBounds(); +} + +} // namespace sksg |