3ba3fa72ae
... to avoid having too many Node friends. TBR= Change-Id: I8f8ff570d94ea48017935066a3d51cd8265ec120 Reviewed-on: https://skia-review.googlesource.com/97980 Reviewed-by: Florin Malita <fmalita@chromium.org> Commit-Queue: Florin Malita <fmalita@chromium.org>
52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
/*
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* Copyright 2018 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 "SkSGMaskEffect.h"
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#include "SkCanvas.h"
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namespace sksg {
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MaskEffect::MaskEffect(sk_sp<RenderNode> child, sk_sp<RenderNode> mask)
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: INHERITED(std::move(child))
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, fMaskNode(std::move(mask)) {
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this->observeInval(fMaskNode);
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}
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MaskEffect::~MaskEffect() {
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this->unobserveInval(fMaskNode);
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}
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void MaskEffect::onRender(SkCanvas* canvas) const {
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if (this->bounds().isEmpty())
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return;
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SkAutoCanvasRestore acr(canvas, false);
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canvas->saveLayer(this->bounds(), nullptr);
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fMaskNode->render(canvas);
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SkPaint p;
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p.setBlendMode(SkBlendMode::kSrcIn);
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canvas->saveLayer(this->bounds(), &p);
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this->INHERITED::onRender(canvas);
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}
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SkRect MaskEffect::onRevalidate(InvalidationController* ic, const SkMatrix& ctm) {
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SkASSERT(this->hasInval());
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const auto maskBounds = fMaskNode->revalidate(ic, ctm);
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auto childBounds = this->INHERITED::onRevalidate(ic, ctm);
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return childBounds.intersect(maskBounds) ? childBounds : SkRect::MakeEmpty();
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}
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} // namespace sksg
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