43398a8a4a
Refactor TrimEffect using SkTrimPathEffect instead of SkDashPathEffect. TBR= Change-Id: I1415b30b58db28cb74b70fb176307634ab0774e8 Reviewed-on: https://skia-review.googlesource.com/114264 Reviewed-by: Florin Malita <fmalita@chromium.org> Commit-Queue: Florin Malita <fmalita@chromium.org>
72 lines
1.9 KiB
C++
72 lines
1.9 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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#include "SkSGTrimEffect.h"
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#include "SkCanvas.h"
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#include "SkStrokeRec.h"
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#include "SkTrimPathEffect.h"
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namespace sksg {
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TrimEffect::TrimEffect(sk_sp<GeometryNode> child)
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: fChild(std::move(child)) {
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this->observeInval(fChild);
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}
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TrimEffect::~TrimEffect() {
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this->unobserveInval(fChild);
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}
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void TrimEffect::onClip(SkCanvas* canvas, bool antiAlias) const {
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canvas->clipPath(fTrimmedPath, SkClipOp::kIntersect, antiAlias);
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}
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void TrimEffect::onDraw(SkCanvas* canvas, const SkPaint& paint) const {
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SkASSERT(!paint.getPathEffect());
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canvas->drawPath(fTrimmedPath, paint);
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}
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SkPath TrimEffect::onAsPath() const {
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return fTrimmedPath;
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}
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SkRect TrimEffect::onRevalidate(InvalidationController* ic, const SkMatrix& ctm) {
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SkASSERT(this->hasInval());
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const auto childbounds = fChild->revalidate(ic, ctm);
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const auto path = fChild->asPath();
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// TODO: relocate these funky semantics to a Skottie composite helper,
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// and refactor TrimEffect as a thin SkTrimpPathEffect wrapper.
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auto start = SkTMin(fStart, fEnd) + fOffset,
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stop = SkTMax(fStart, fEnd) + fOffset;
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sk_sp<SkPathEffect> trim;
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if (stop - start < 1) {
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start -= SkScalarFloorToScalar(start);
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stop -= SkScalarFloorToScalar(stop);
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trim = start <= stop
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? SkTrimPathEffect::Make(start, stop, SkTrimPathEffect::Mode::kNormal)
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: SkTrimPathEffect::Make(stop, start, SkTrimPathEffect::Mode::kInverted);
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}
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if (trim) {
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fTrimmedPath.reset();
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SkStrokeRec rec(SkStrokeRec::kHairline_InitStyle);
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SkAssertResult(trim->filterPath(&fTrimmedPath, path, &rec, &childbounds));
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} else {
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fTrimmedPath = path;
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}
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return fTrimmedPath.computeTightBounds();
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}
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} // namespace sksg
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