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