60 lines
2.2 KiB
C++
60 lines
2.2 KiB
C++
/*
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* Copyright (C) 2018-2021 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "JSPaintRenderingContext2D.h"
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#if ENABLE(CSS_PAINTING_API)
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namespace WebCore {
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using namespace JSC;
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inline void* root(CustomPaintCanvas* canvas)
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{
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return canvas;
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}
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bool JSPaintRenderingContext2DOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, AbstractSlotVisitor& visitor, const char** reason)
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{
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if (UNLIKELY(reason))
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*reason = "Canvas is opaque root";
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JSPaintRenderingContext2D* jsPaintRenderingContext = jsCast<JSPaintRenderingContext2D*>(handle.slot()->asCell());
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void* root = WebCore::root(&jsPaintRenderingContext->wrapped().canvas());
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return visitor.containsOpaqueRoot(root);
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}
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template<typename Visitor>
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void JSPaintRenderingContext2D::visitAdditionalChildren(Visitor& visitor)
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{
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visitor.addOpaqueRoot(root(&wrapped().canvas()));
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}
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DEFINE_VISIT_ADDITIONAL_CHILDREN(JSPaintRenderingContext2D);
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} // namespace WebCore
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#endif
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