52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
/*
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* Copyright (C) 2020 WikiMedia 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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*/
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#include "config.h"
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#include "ContentfulPaintChecker.h"
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#include "FrameView.h"
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#include "GraphicsContext.h"
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#include "NullGraphicsContext.h"
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#include "RenderView.h"
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namespace WebCore {
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bool ContentfulPaintChecker::qualifiesForContentfulPaint(FrameView& frameView)
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{
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ASSERT(!frameView.needsLayout());
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ASSERT(frameView.renderView());
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auto oldPaintBehavior = frameView.paintBehavior();
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auto oldEntireContents = frameView.paintsEntireContents();
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frameView.setPaintBehavior(PaintBehavior::FlattenCompositingLayers);
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frameView.setPaintsEntireContents(true);
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NullGraphicsContext checkerContext(NullGraphicsContext::PaintInvalidationReasons::DetectingContentfulPaint);
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frameView.paint(checkerContext, frameView.renderView()->documentRect());
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frameView.setPaintsEntireContents(oldEntireContents);
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frameView.setPaintBehavior(oldPaintBehavior);
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return checkerContext.contenfulPaintDetected();
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}
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}
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