Source/WebCore/rendering/RenderReplica.cpp

/*
 * Copyright (C) 2008 Apple Inc. All rights reserved.
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 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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#include "config.h"
#include "RenderReplica.h"

#include "RenderLayer.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/StackStats.h>

namespace WebCore {

WTF_MAKE_ISO_ALLOCATED_IMPL(RenderReplica);

RenderReplica::RenderReplica(Document& document, RenderStyle&& style)
    : RenderBox(document, WTFMove(style), 0)
{
    // This is a hack. Replicas are synthetic, and don't pick up the attributes of the
    // renderers being replicated, so they always report that they are inline, non-replaced.
    // However, we need transforms to be applied to replicas for reflections, so have to pass
    // the if (!isInline() || isReplaced()) check before setHasTransform().
    setReplaced(true);
}

RenderReplica::~RenderReplica() = default;
    
void RenderReplica::layout()
{
    StackStats::LayoutCheckPoint layoutCheckPoint;
    setFrameRect(parentBox()->borderBoxRect());
    updateLayerTransform();
    clearNeedsLayout();
}

void RenderReplica::computePreferredLogicalWidths()
{
    m_minPreferredLogicalWidth = parentBox()->width();
    m_maxPreferredLogicalWidth = m_minPreferredLogicalWidth;
    setPreferredLogicalWidthsDirty(false);
}

void RenderReplica::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
    if (paintInfo.phase != PaintPhase::Foreground && paintInfo.phase != PaintPhase::Mask)
        return;
 
    LayoutPoint adjustedPaintOffset = paintOffset + location();

    if (paintInfo.phase == PaintPhase::Foreground) {
        // Turn around and paint the parent layer. Use temporary clipRects, so that the layer doesn't end up caching clip rects
        // computing using the wrong rootLayer
        RenderLayer* rootPaintingLayer = layer()->transform() ? layer()->parent() : layer()->enclosingTransformedAncestor();
        RenderLayer::LayerPaintingInfo paintingInfo(rootPaintingLayer, paintInfo.rect, PaintBehavior::Normal, LayoutSize(), 0);
        OptionSet<RenderLayer::PaintLayerFlag> flags { RenderLayer::PaintLayerFlag::HaveTransparency, RenderLayer::PaintLayerFlag::AppliedTransform, RenderLayer::PaintLayerFlag::TemporaryClipRects, RenderLayer::PaintLayerFlag::PaintingReflection };
        layer()->parent()->paintLayer(paintInfo.context(), paintingInfo, flags);
    } else if (paintInfo.phase == PaintPhase::Mask)
        paintMask(paintInfo, adjustedPaintOffset);
}

} // namespace WebCore