55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
/*
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* Copyright (C) 2017-2021 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "config.h"
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#if ENABLE(OFFSCREEN_CANVAS)
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#include "JSOffscreenCanvasRenderingContext2D.h"
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namespace WebCore {
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using namespace JSC;
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inline void* root(OffscreenCanvas* canvas)
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{
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return canvas;
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}
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bool JSOffscreenCanvasRenderingContext2DOwner::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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JSOffscreenCanvasRenderingContext2D* jsOffscreenCanvasRenderingContext = jsCast<JSOffscreenCanvasRenderingContext2D*>(handle.slot()->asCell());
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void* root = WebCore::root(&jsOffscreenCanvasRenderingContext->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 JSOffscreenCanvasRenderingContext2D::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(JSOffscreenCanvasRenderingContext2D);
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} // namespace WebCore
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#endif
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