diff options
author | Florin Malita <fmalita@chromium.org> | 2018-01-29 16:31:14 -0500 |
---|---|---|
committer | Skia Commit-Bot <skia-commit-bot@chromium.org> | 2018-01-29 21:57:44 +0000 |
commit | 38ea40eb750596c75b8ffb5c8f94bcb84b94a7c3 (patch) | |
tree | 966c9416f99c784dd84dcc31d91fe3bf790bfd11 /experimental/sksg/effects/SkSGClipEffect.cpp | |
parent | eed48b66eb083f01638d1a2126a2b49f1e2ddc8f (diff) |
[skottie] Layer clip support
TBR=
Change-Id: Ibf65efc69031f8f6e19f4f28cccab29c357e704d
Reviewed-on: https://skia-review.googlesource.com/101540
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Diffstat (limited to 'experimental/sksg/effects/SkSGClipEffect.cpp')
-rw-r--r-- | experimental/sksg/effects/SkSGClipEffect.cpp | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/experimental/sksg/effects/SkSGClipEffect.cpp b/experimental/sksg/effects/SkSGClipEffect.cpp new file mode 100644 index 0000000000..b2d68fc8cf --- /dev/null +++ b/experimental/sksg/effects/SkSGClipEffect.cpp @@ -0,0 +1,50 @@ +/* + * 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 "SkSGClipEffect.h" + +#include "SkCanvas.h" +#include "SkPath.h" +#include "SkSGGeometryNode.h" + +namespace sksg { + +ClipEffect::ClipEffect(sk_sp<RenderNode> child, sk_sp<GeometryNode> clip, bool aa) + : INHERITED(std::move(child)) + , fClipNode(std::move(clip)) + , fAntiAlias(aa) { + this->observeInval(fClipNode); +} + +ClipEffect::~ClipEffect() { + this->unobserveInval(fClipNode); +} + +void ClipEffect::onRender(SkCanvas* canvas) const { + if (this->bounds().isEmpty()) + return; + + SkAutoCanvasRestore acr(canvas, !fNoop); + if (!fNoop) { + fClipNode->clip(canvas, fAntiAlias); + } + + this->INHERITED::onRender(canvas); +} + +SkRect ClipEffect::onRevalidate(InvalidationController* ic, const SkMatrix& ctm) { + SkASSERT(this->hasInval()); + + const auto clipBounds = fClipNode->revalidate(ic, ctm); + auto childBounds = this->INHERITED::onRevalidate(ic, ctm); + + fNoop = fClipNode->asPath().conservativelyContainsRect(childBounds); + + return childBounds.intersect(clipBounds) ? childBounds : SkRect::MakeEmpty(); +} + +} // namespace sksg |