866 lines
47 KiB
C++
866 lines
47 KiB
C++
/*
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
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* (C) 1999 Antti Koivisto (koivisto@kde.org)
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* Copyright (C) 2003, 2006, 2007, 2015 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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*/
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#pragma once
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#include "FrameView.h"
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#include "RenderBoxModelObject.h"
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#include "RenderOverflow.h"
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#include "ScrollSnapOffsetsInfo.h"
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#include "ScrollTypes.h"
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#include "ShapeOutsideInfo.h"
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namespace WebCore {
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class LegacyInlineElementBox;
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class RenderBlockFlow;
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class RenderBoxFragmentInfo;
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class RenderFragmentContainer;
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struct PaintInfo;
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enum SizeType { MainOrPreferredSize, MinSize, MaxSize };
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enum AvailableLogicalHeightType { ExcludeMarginBorderPadding, IncludeMarginBorderPadding };
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enum OverlayScrollbarSizeRelevancy { IgnoreOverlayScrollbarSize, IncludeOverlayScrollbarSize };
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enum ShouldComputePreferred { ComputeActual, ComputePreferred };
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enum class StretchingMode { Any, Explicit };
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class RenderBox : public RenderBoxModelObject {
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WTF_MAKE_ISO_ALLOCATED(RenderBox);
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public:
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virtual ~RenderBox();
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// hasAutoZIndex only returns true if the element is positioned or a flex-item since
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// position:static elements that are not flex-items get their z-index coerced to auto.
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bool requiresLayer() const override
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{
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return isDocumentElementRenderer() || isPositioned() || createsGroup() || hasNonVisibleOverflow()
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|| hasTransformRelatedProperty() || hasHiddenBackface() || hasReflection() || style().specifiesColumns()
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|| style().containsLayout() || !style().hasAutoUsedZIndex() || hasRunningAcceleratedAnimations();
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}
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bool requiresLayerWithScrollableArea() const;
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bool backgroundIsKnownToBeOpaqueInRect(const LayoutRect& localRect) const final;
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// Returns false for the body renderer if its background is propagated to the root.
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bool paintsOwnBackground() const;
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LayoutUnit x() const { return m_frameRect.x(); }
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LayoutUnit y() const { return m_frameRect.y(); }
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LayoutUnit width() const { return m_frameRect.width(); }
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LayoutUnit height() const { return m_frameRect.height(); }
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// These represent your location relative to your container as a physical offset.
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// In layout related methods you almost always want the logical location (e.g. x() and y()).
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LayoutUnit top() const { return topLeftLocation().y(); }
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LayoutUnit left() const { return topLeftLocation().x(); }
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template<typename T> void setX(T x) { m_frameRect.setX(x); }
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template<typename T> void setY(T y) { m_frameRect.setY(y); }
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template<typename T> void setWidth(T width) { m_frameRect.setWidth(width); }
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template<typename T> void setHeight(T height) { m_frameRect.setHeight(height); }
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LayoutUnit logicalLeft() const { return style().isHorizontalWritingMode() ? x() : y(); }
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LayoutUnit logicalRight() const { return logicalLeft() + logicalWidth(); }
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LayoutUnit logicalTop() const { return style().isHorizontalWritingMode() ? y() : x(); }
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LayoutUnit logicalBottom() const { return logicalTop() + logicalHeight(); }
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LayoutUnit logicalWidth() const { return style().isHorizontalWritingMode() ? width() : height(); }
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LayoutUnit logicalHeight() const { return style().isHorizontalWritingMode() ? height() : width(); }
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enum class AllowIntrinsic { Yes, No };
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LayoutUnit constrainLogicalWidthInFragmentByMinMax(LayoutUnit, LayoutUnit, RenderBlock&, RenderFragmentContainer*, AllowIntrinsic = AllowIntrinsic::Yes) const;
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LayoutUnit constrainLogicalHeightByMinMax(LayoutUnit logicalHeight, std::optional<LayoutUnit> intrinsicContentHeight) const;
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LayoutUnit constrainContentBoxLogicalHeightByMinMax(LayoutUnit logicalHeight, std::optional<LayoutUnit> intrinsicContentHeight) const;
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void setLogicalLeft(LayoutUnit left)
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{
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if (style().isHorizontalWritingMode())
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setX(left);
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else
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setY(left);
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}
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void setLogicalTop(LayoutUnit top)
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{
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if (style().isHorizontalWritingMode())
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setY(top);
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else
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setX(top);
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}
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void setLogicalLocation(const LayoutPoint& location)
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{
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if (style().isHorizontalWritingMode())
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setLocation(location);
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else
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setLocation(location.transposedPoint());
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}
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void setLogicalWidth(LayoutUnit size)
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{
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if (style().isHorizontalWritingMode())
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setWidth(size);
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else
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setHeight(size);
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}
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void setLogicalHeight(LayoutUnit size)
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{
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if (style().isHorizontalWritingMode())
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setHeight(size);
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else
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setWidth(size);
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}
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void setLogicalSize(const LayoutSize& size)
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{
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if (style().isHorizontalWritingMode())
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setSize(size);
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else
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setSize(size.transposedSize());
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}
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LayoutPoint location() const { return m_frameRect.location(); }
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LayoutSize locationOffset() const { return LayoutSize(x(), y()); }
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LayoutSize size() const { return m_frameRect.size(); }
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void setLocation(const LayoutPoint& location) { m_frameRect.setLocation(location); }
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void setSize(const LayoutSize& size) { m_frameRect.setSize(size); }
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void move(LayoutUnit dx, LayoutUnit dy) { m_frameRect.move(dx, dy); }
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LayoutRect frameRect() const { return m_frameRect; }
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void setFrameRect(const LayoutRect& rect) { m_frameRect = rect; }
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LayoutRect marginBoxRect() const
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{
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auto marginLeft = computedCSSPadding(style().marginLeft());
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auto marginRight = computedCSSPadding(style().marginRight());
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auto marginTop = computedCSSPadding(style().marginTop());
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auto marginBottom = computedCSSPadding(style().marginBottom());
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return LayoutRect(-marginLeft, -marginTop, size().width() + marginLeft + marginRight, size().height() + marginTop + marginBottom);
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}
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LayoutRect borderBoxRect() const { return LayoutRect(LayoutPoint(), size()); }
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LayoutRect borderBoundingBox() const final { return borderBoxRect(); }
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WEBCORE_EXPORT RoundedRect::Radii borderRadii() const;
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RoundedRect roundedBorderBoxRect() const;
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// The content area of the box (excludes padding - and intrinsic padding for table cells, etc... - and border).
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LayoutRect contentBoxRect() const;
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LayoutPoint contentBoxLocation() const;
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// .https://drafts.csswg.org/css-transforms-1/#reference-box
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LayoutRect referenceBox(CSSBoxType) const;
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// The content box in absolute coords. Ignores transforms.
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IntRect absoluteContentBox() const;
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// The content box converted to absolute coords (taking transforms into account).
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WEBCORE_EXPORT FloatQuad absoluteContentQuad() const;
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// This returns the content area of the box (excluding padding and border). The only difference with contentBoxRect is that computedCSSContentBoxRect
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// does include the intrinsic padding in the content box as this is what some callers expect (like getComputedStyle).
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LayoutRect computedCSSContentBoxRect() const { return LayoutRect(borderLeft() + computedCSSPaddingLeft(), borderTop() + computedCSSPaddingTop(), paddingBoxWidth() - computedCSSPaddingLeft() - computedCSSPaddingRight(), paddingBoxHeight() - computedCSSPaddingTop() - computedCSSPaddingBottom()); }
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// Bounds of the outline box in absolute coords. Respects transforms
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LayoutRect outlineBoundsForRepaint(const RenderLayerModelObject* /*repaintContainer*/, const RenderGeometryMap*) const final;
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void addFocusRingRects(Vector<LayoutRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer = nullptr) override;
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FloatRect repaintRectInLocalCoordinates() const override { return borderBoxRect(); }
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FloatRect objectBoundingBox() const override { return borderBoxRect(); }
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// Note these functions are not equivalent of childrenOfType<RenderBox>
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RenderBox* parentBox() const;
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RenderBox* firstChildBox() const;
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RenderBox* lastChildBox() const;
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RenderBox* previousSiblingBox() const;
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RenderBox* nextSiblingBox() const;
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// Visual and layout overflow are in the coordinate space of the box. This means that they aren't purely physical directions.
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// For horizontal-tb and vertical-lr they will match physical directions, but for horizontal-bt and vertical-rl, the top/bottom and left/right
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// respectively are flipped when compared to their physical counterparts. For example minX is on the left in vertical-lr,
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// but it is on the right in vertical-rl.
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WEBCORE_EXPORT LayoutRect flippedClientBoxRect() const;
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LayoutRect layoutOverflowRect() const { return m_overflow ? m_overflow->layoutOverflowRect() : flippedClientBoxRect(); }
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LayoutUnit logicalLeftLayoutOverflow() const { return style().isHorizontalWritingMode() ? layoutOverflowRect().x() : layoutOverflowRect().y(); }
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LayoutUnit logicalRightLayoutOverflow() const { return style().isHorizontalWritingMode() ? layoutOverflowRect().maxX() : layoutOverflowRect().maxY(); }
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LayoutRect visualOverflowRect() const { return m_overflow ? m_overflow->visualOverflowRect() : borderBoxRect(); }
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LayoutUnit logicalLeftVisualOverflow() const { return style().isHorizontalWritingMode() ? visualOverflowRect().x() : visualOverflowRect().y(); }
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LayoutUnit logicalRightVisualOverflow() const { return style().isHorizontalWritingMode() ? visualOverflowRect().maxX() : visualOverflowRect().maxY(); }
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void addLayoutOverflow(const LayoutRect&);
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void addVisualOverflow(const LayoutRect&);
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void clearOverflow();
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virtual bool isTopLayoutOverflowAllowed() const { return !style().isLeftToRightDirection() && !isHorizontalWritingMode(); }
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virtual bool isLeftLayoutOverflowAllowed() const { return !style().isLeftToRightDirection() && isHorizontalWritingMode(); }
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void addVisualEffectOverflow();
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LayoutRect applyVisualEffectOverflow(const LayoutRect&) const;
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void addOverflowFromChild(const RenderBox* child) { addOverflowFromChild(child, child->locationOffset()); }
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void addOverflowFromChild(const RenderBox* child, const LayoutSize& delta);
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void updateLayerTransform();
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LayoutSize contentSize() const { return { contentWidth(), contentHeight() }; }
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LayoutUnit contentWidth() const { return std::max(0_lu, paddingBoxWidth() - paddingLeft() - paddingRight()); }
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LayoutUnit contentHeight() const { return std::max(0_lu, paddingBoxHeight() - paddingTop() - paddingBottom()); }
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LayoutUnit contentLogicalWidth() const { return style().isHorizontalWritingMode() ? contentWidth() : contentHeight(); }
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LayoutUnit contentLogicalHeight() const { return style().isHorizontalWritingMode() ? contentHeight() : contentWidth(); }
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LayoutUnit paddingBoxWidth() const { return std::max(0_lu, width() - borderLeft() - borderRight() - verticalScrollbarWidth()); }
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LayoutUnit paddingBoxHeight() const { return std::max(0_lu, height() - borderTop() - borderBottom() - horizontalScrollbarHeight()); }
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LayoutRect paddingBoxRect() const;
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LayoutRect paddingBoxRectIncludingScrollbar() const { return LayoutRect(borderLeft(), borderTop(), width() - borderLeft() - borderRight(), height() - borderTop() - borderBottom()); }
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// IE extensions. Used to calculate offsetWidth/Height. Overridden by inlines (RenderFlow)
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// to return the remaining width on a given line (and the height of a single line).
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LayoutUnit offsetWidth() const override { return width(); }
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LayoutUnit offsetHeight() const override { return height(); }
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// More IE extensions. clientWidth and clientHeight represent the interior of an object
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// excluding border and scrollbar. clientLeft/Top are just the borderLeftWidth and borderTopWidth.
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LayoutUnit clientLeft() const { return borderLeft(); }
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LayoutUnit clientTop() const { return borderTop(); }
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WEBCORE_EXPORT LayoutUnit clientWidth() const;
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WEBCORE_EXPORT LayoutUnit clientHeight() const;
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LayoutUnit clientLogicalWidth() const { return style().isHorizontalWritingMode() ? clientWidth() : clientHeight(); }
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LayoutUnit clientLogicalHeight() const { return style().isHorizontalWritingMode() ? clientHeight() : clientWidth(); }
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LayoutUnit clientLogicalBottom() const { return borderBefore() + clientLogicalHeight(); }
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LayoutRect clientBoxRect() const { return LayoutRect(clientLeft(), clientTop(), clientWidth(), clientHeight()); }
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// scrollWidth/scrollHeight will be the same as clientWidth/clientHeight unless the
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// object has overflow:hidden/scroll/auto specified and also has overflow.
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// scrollLeft/Top return the current scroll position. These methods are virtual so that objects like
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// textareas can scroll shadow content (but pretend that they are the objects that are
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// scrolling).
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virtual int scrollLeft() const;
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virtual int scrollTop() const;
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virtual int scrollWidth() const;
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virtual int scrollHeight() const;
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virtual void setScrollLeft(int, const ScrollPositionChangeOptions&);
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virtual void setScrollTop(int, const ScrollPositionChangeOptions&);
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void setScrollPosition(const ScrollPosition&, const ScrollPositionChangeOptions&);
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LayoutUnit marginTop() const override { return m_marginBox.top(); }
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LayoutUnit marginBottom() const override { return m_marginBox.bottom(); }
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LayoutUnit marginLeft() const override { return m_marginBox.left(); }
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LayoutUnit marginRight() const override { return m_marginBox.right(); }
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void setMarginTop(LayoutUnit margin) { m_marginBox.setTop(margin); }
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void setMarginBottom(LayoutUnit margin) { m_marginBox.setBottom(margin); }
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void setMarginLeft(LayoutUnit margin) { m_marginBox.setLeft(margin); }
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void setMarginRight(LayoutUnit margin) { m_marginBox.setRight(margin); }
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LayoutUnit marginLogicalLeft(const RenderStyle* overrideStyle = nullptr) const { return m_marginBox.start((overrideStyle ? overrideStyle : &style())->writingMode()); }
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LayoutUnit marginLogicalRight(const RenderStyle* overrideStyle = nullptr) const { return m_marginBox.end((overrideStyle ? overrideStyle : &style())->writingMode()); }
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LayoutUnit marginBefore(const RenderStyle* overrideStyle = nullptr) const final { return m_marginBox.before((overrideStyle ? overrideStyle : &style())->writingMode()); }
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LayoutUnit marginAfter(const RenderStyle* overrideStyle = nullptr) const final { return m_marginBox.after((overrideStyle ? overrideStyle : &style())->writingMode()); }
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LayoutUnit marginStart(const RenderStyle* overrideStyle = nullptr) const final
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{
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const RenderStyle* styleToUse = overrideStyle ? overrideStyle : &style();
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return m_marginBox.start(styleToUse->writingMode(), styleToUse->direction());
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}
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LayoutUnit marginEnd(const RenderStyle* overrideStyle = nullptr) const final
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{
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const RenderStyle* styleToUse = overrideStyle ? overrideStyle : &style();
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return m_marginBox.end(styleToUse->writingMode(), styleToUse->direction());
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}
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void setMarginBefore(LayoutUnit value, const RenderStyle* overrideStyle = nullptr) { m_marginBox.setBefore(value, (overrideStyle ? overrideStyle : &style())->writingMode()); }
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void setMarginAfter(LayoutUnit value, const RenderStyle* overrideStyle = nullptr) { m_marginBox.setAfter(value, (overrideStyle ? overrideStyle : &style())->writingMode()); }
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void setMarginStart(LayoutUnit value, const RenderStyle* overrideStyle = nullptr)
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{
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const RenderStyle* styleToUse = overrideStyle ? overrideStyle : &style();
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m_marginBox.setStart(value, styleToUse->writingMode(), styleToUse->direction());
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}
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void setMarginEnd(LayoutUnit value, const RenderStyle* overrideStyle = nullptr)
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{
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const RenderStyle* styleToUse = overrideStyle ? overrideStyle : &style();
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m_marginBox.setEnd(value, styleToUse->writingMode(), styleToUse->direction());
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}
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virtual bool isSelfCollapsingBlock() const { return false; }
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virtual LayoutUnit collapsedMarginBefore() const { return marginBefore(); }
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virtual LayoutUnit collapsedMarginAfter() const { return marginAfter(); }
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void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedOffset) const override;
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void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const override;
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int reflectionOffset() const;
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// Given a rect in the object's coordinate space, returns the corresponding rect in the reflection.
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LayoutRect reflectedRect(const LayoutRect&) const;
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void layout() override;
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bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation&, const LayoutPoint& accumulatedOffset, HitTestAction) override;
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bool hitTestVisualOverflow(const HitTestLocation&, const LayoutPoint& accumulatedOffset) const;
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bool hitTestClipPath(const HitTestLocation&, const LayoutPoint& accumulatedOffset) const;
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bool hitTestBorderRadius(const HitTestLocation&, const LayoutPoint& accumulatedOffset) const;
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LayoutUnit minPreferredLogicalWidth() const override;
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LayoutUnit maxPreferredLogicalWidth() const override;
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LayoutUnit overridingLogicalWidth() const;
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LayoutUnit overridingLogicalHeight() const;
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bool hasOverridingLogicalHeight() const;
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bool hasOverridingLogicalWidth() const;
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void setOverridingLogicalHeight(LayoutUnit);
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void setOverridingLogicalWidth(LayoutUnit);
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void clearOverridingContentSize();
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void clearOverridingLogicalHeight();
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void clearOverridingLogicalWidth();
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LayoutUnit overridingContentLogicalWidth() const { return std::max(LayoutUnit(), overridingLogicalWidth() - borderAndPaddingLogicalWidth() - scrollbarLogicalWidth()); }
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LayoutUnit overridingContentLogicalHeight() const { return std::max(LayoutUnit(), overridingLogicalHeight() - borderAndPaddingLogicalHeight() - scrollbarLogicalHeight()); }
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std::optional<LayoutUnit> overridingContainingBlockContentWidth() const override;
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std::optional<LayoutUnit> overridingContainingBlockContentHeight() const override;
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bool hasOverridingContainingBlockContentWidth() const override;
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bool hasOverridingContainingBlockContentHeight() const override;
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std::optional<LayoutUnit> overridingContainingBlockContentLogicalWidth() const;
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std::optional<LayoutUnit> overridingContainingBlockContentLogicalHeight() const;
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bool hasOverridingContainingBlockContentLogicalWidth() const;
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bool hasOverridingContainingBlockContentLogicalHeight() const;
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void setOverridingContainingBlockContentLogicalWidth(std::optional<LayoutUnit>);
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void setOverridingContainingBlockContentLogicalHeight(std::optional<LayoutUnit>);
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void clearOverridingContainingBlockContentSize();
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void clearOverridingContainingBlockContentLogicalHeight();
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LayoutSize offsetFromContainer(RenderElement&, const LayoutPoint&, bool* offsetDependsOnPoint = nullptr) const override;
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LayoutUnit adjustBorderBoxLogicalWidthForBoxSizing(const Length& logicalWidth) const;
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LayoutUnit adjustContentBoxLogicalWidthForBoxSizing(const Length& logicalWidth) const;
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LayoutUnit adjustBorderBoxLogicalWidthForBoxSizing(LayoutUnit computedLogicalWidth, LengthType originalType) const;
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LayoutUnit adjustContentBoxLogicalWidthForBoxSizing(LayoutUnit computedLogicalWidth, LengthType originalType) const;
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template<typename T> LayoutUnit adjustBorderBoxLogicalWidthForBoxSizing(T computedLogicalWidth, LengthType originalType) const { return adjustBorderBoxLogicalWidthForBoxSizing(LayoutUnit(computedLogicalWidth), originalType); }
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template<typename T> LayoutUnit adjustContentBoxLogicalWidthForBoxSizing(T computedLogicalWidth, LengthType originalType) const { return adjustContentBoxLogicalWidthForBoxSizing(LayoutUnit(computedLogicalWidth), originalType); }
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// Overridden by fieldsets to subtract out the intrinsic border.
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virtual LayoutUnit adjustBorderBoxLogicalHeightForBoxSizing(LayoutUnit height) const;
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virtual LayoutUnit adjustContentBoxLogicalHeightForBoxSizing(std::optional<LayoutUnit> height) const;
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struct ComputedMarginValues {
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LayoutUnit m_before;
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LayoutUnit m_after;
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LayoutUnit m_start;
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LayoutUnit m_end;
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};
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struct LogicalExtentComputedValues {
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LayoutUnit m_extent;
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LayoutUnit m_position;
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ComputedMarginValues m_margins;
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};
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// Resolve auto margins in the inline direction of the containing block so that objects can be pushed to the start, middle or end
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// of the containing block.
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void computeInlineDirectionMargins(const RenderBlock& containingBlock, LayoutUnit containerWidth, LayoutUnit childWidth, LayoutUnit& marginStart, LayoutUnit& marginEnd) const;
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// Used to resolve margins in the containing block's block-flow direction.
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void computeBlockDirectionMargins(const RenderBlock& containingBlock, LayoutUnit& marginBefore, LayoutUnit& marginAfter) const;
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void computeAndSetBlockDirectionMargins(const RenderBlock& containingBlock);
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enum RenderBoxFragmentInfoFlags { CacheRenderBoxFragmentInfo, DoNotCacheRenderBoxFragmentInfo };
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LayoutRect borderBoxRectInFragment(RenderFragmentContainer*, RenderBoxFragmentInfoFlags = CacheRenderBoxFragmentInfo) const;
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LayoutRect clientBoxRectInFragment(RenderFragmentContainer*) const;
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RenderFragmentContainer* clampToStartAndEndFragments(RenderFragmentContainer*) const;
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bool hasFragmentRangeInFragmentedFlow() const;
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virtual LayoutUnit offsetFromLogicalTopOfFirstPage() const;
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void positionLineBox(LegacyInlineElementBox&);
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virtual std::unique_ptr<LegacyInlineElementBox> createInlineBox();
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void dirtyLineBoxes(bool fullLayout);
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// For inline replaced elements, this function returns the inline box that owns us. Enables
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// the replaced RenderObject to quickly determine what line it is contained on and to easily
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// iterate over structures on the line.
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LegacyInlineElementBox* inlineBoxWrapper() const { return m_inlineBoxWrapper; }
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void setInlineBoxWrapper(LegacyInlineElementBox*);
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void deleteLineBoxWrapper();
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LayoutRect clippedOverflowRect(const RenderLayerModelObject* repaintContainer, VisibleRectContext) const override;
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std::optional<LayoutRect> computeVisibleRectInContainer(const LayoutRect&, const RenderLayerModelObject* container, VisibleRectContext) const
|
|
override;
|
|
void repaintDuringLayoutIfMoved(const LayoutRect&);
|
|
virtual void repaintOverhangingFloats(bool paintAllDescendants);
|
|
|
|
LayoutUnit containingBlockLogicalWidthForContent() const override;
|
|
LayoutUnit containingBlockLogicalHeightForContent(AvailableLogicalHeightType) const;
|
|
LayoutUnit containingBlockLogicalWidthForPositioned(const RenderBoxModelObject& containingBlock, RenderFragmentContainer* = nullptr, bool checkForPerpendicularWritingMode = true) const;
|
|
LayoutUnit containingBlockLogicalHeightForPositioned(const RenderBoxModelObject& containingBlock, bool checkForPerpendicularWritingMode = true) const;
|
|
LayoutUnit containingBlockLogicalWidthForContentInFragment(RenderFragmentContainer*) const;
|
|
LayoutUnit containingBlockAvailableLineWidthInFragment(RenderFragmentContainer*) const;
|
|
LayoutUnit perpendicularContainingBlockLogicalHeight() const;
|
|
|
|
virtual void updateLogicalWidth();
|
|
virtual void updateLogicalHeight();
|
|
virtual LogicalExtentComputedValues computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit logicalTop) const;
|
|
|
|
void cacheIntrinsicContentLogicalHeightForFlexItem(LayoutUnit) const;
|
|
|
|
// This function will compute the logical border-box height, without laying
|
|
// out the box. This means that the result is only "correct" when the height
|
|
// is explicitly specified. This function exists so that intrinsic width
|
|
// calculations have a way to deal with children that have orthogonal writing modes.
|
|
// When there is no explicit height, this function assumes a content height of
|
|
// zero (and returns just border + padding).
|
|
LayoutUnit computeLogicalHeightWithoutLayout() const;
|
|
|
|
RenderBoxFragmentInfo* renderBoxFragmentInfo(RenderFragmentContainer*, RenderBoxFragmentInfoFlags = CacheRenderBoxFragmentInfo) const;
|
|
void computeLogicalWidthInFragment(LogicalExtentComputedValues&, RenderFragmentContainer* = nullptr) const;
|
|
|
|
bool stretchesToViewport() const
|
|
{
|
|
return document().inQuirksMode() && style().logicalHeight().isAuto() && !isFloatingOrOutOfFlowPositioned() && (isDocumentElementRenderer() || isBody()) && !shouldComputeLogicalHeightFromAspectRatio() && !isInline();
|
|
}
|
|
|
|
virtual LayoutSize intrinsicSize() const { return LayoutSize(); }
|
|
LayoutUnit intrinsicLogicalWidth() const { return style().isHorizontalWritingMode() ? intrinsicSize().width() : intrinsicSize().height(); }
|
|
LayoutUnit intrinsicLogicalHeight() const { return style().isHorizontalWritingMode() ? intrinsicSize().height() : intrinsicSize().width(); }
|
|
|
|
// Whether or not the element shrinks to its intrinsic width (rather than filling the width
|
|
// of a containing block). HTML4 buttons, <select>s, <input>s, legends, and floating/compact elements do this.
|
|
bool sizesLogicalWidthToFitContent(SizeType) const;
|
|
|
|
bool hasStretchedLogicalHeight() const;
|
|
bool hasStretchedLogicalWidth(StretchingMode = StretchingMode::Any) const;
|
|
bool isStretchingColumnFlexItem() const;
|
|
bool columnFlexItemHasStretchAlignment() const;
|
|
|
|
LayoutUnit shrinkLogicalWidthToAvoidFloats(LayoutUnit childMarginStart, LayoutUnit childMarginEnd, const RenderBlock& cb, RenderFragmentContainer*) const;
|
|
|
|
LayoutUnit computeLogicalWidthInFragmentUsing(SizeType, Length logicalWidth, LayoutUnit availableLogicalWidth, const RenderBlock& containingBlock, RenderFragmentContainer*) const;
|
|
std::optional<LayoutUnit> computeLogicalHeightUsing(SizeType, const Length& height, std::optional<LayoutUnit> intrinsicContentHeight) const;
|
|
std::optional<LayoutUnit> computeContentLogicalHeight(SizeType, const Length& height, std::optional<LayoutUnit> intrinsicContentHeight) const;
|
|
std::optional<LayoutUnit> computeContentAndScrollbarLogicalHeightUsing(SizeType, const Length& height, std::optional<LayoutUnit> intrinsicContentHeight) const;
|
|
LayoutUnit computeReplacedLogicalWidthUsing(SizeType, Length width) const;
|
|
LayoutUnit computeReplacedLogicalWidthRespectingMinMaxWidth(LayoutUnit logicalWidth, ShouldComputePreferred = ComputeActual) const;
|
|
LayoutUnit computeReplacedLogicalHeightUsing(SizeType, Length height) const;
|
|
LayoutUnit computeReplacedLogicalHeightRespectingMinMaxHeight(LayoutUnit logicalHeight) const;
|
|
|
|
template<typename T> LayoutUnit computeReplacedLogicalWidthRespectingMinMaxWidth(T logicalWidth, ShouldComputePreferred shouldComputePreferred = ComputeActual) const { return computeReplacedLogicalWidthRespectingMinMaxWidth(LayoutUnit(logicalWidth), shouldComputePreferred); }
|
|
template<typename T> LayoutUnit computeReplacedLogicalHeightRespectingMinMaxHeight(T logicalHeight) const { return computeReplacedLogicalHeightRespectingMinMaxHeight(LayoutUnit(logicalHeight)); }
|
|
|
|
virtual LayoutUnit computeReplacedLogicalWidth(ShouldComputePreferred = ComputeActual) const;
|
|
virtual LayoutUnit computeReplacedLogicalHeight(std::optional<LayoutUnit> estimatedUsedWidth = std::nullopt) const;
|
|
|
|
enum class UpdatePercentageHeightDescendants { Yes , No };
|
|
std::optional<LayoutUnit> computePercentageLogicalHeight(const Length& height, UpdatePercentageHeightDescendants = UpdatePercentageHeightDescendants::Yes) const;
|
|
|
|
LayoutUnit availableLogicalWidth() const { return contentLogicalWidth(); }
|
|
virtual LayoutUnit availableLogicalHeight(AvailableLogicalHeightType) const;
|
|
LayoutUnit availableLogicalHeightUsing(const Length&, AvailableLogicalHeightType) const;
|
|
|
|
// There are a few cases where we need to refer specifically to the available physical width and available physical height.
|
|
// Relative positioning is one of those cases, since left/top offsets are physical.
|
|
LayoutUnit availableWidth() const { return style().isHorizontalWritingMode() ? availableLogicalWidth() : availableLogicalHeight(IncludeMarginBorderPadding); }
|
|
LayoutUnit availableHeight() const { return style().isHorizontalWritingMode() ? availableLogicalHeight(IncludeMarginBorderPadding) : availableLogicalWidth(); }
|
|
|
|
WEBCORE_EXPORT virtual int verticalScrollbarWidth() const;
|
|
WEBCORE_EXPORT int horizontalScrollbarHeight() const;
|
|
int intrinsicScrollbarLogicalWidth() const;
|
|
int scrollbarLogicalWidth() const { return style().isHorizontalWritingMode() ? verticalScrollbarWidth() : horizontalScrollbarHeight(); }
|
|
int scrollbarLogicalHeight() const { return style().isHorizontalWritingMode() ? horizontalScrollbarHeight() : verticalScrollbarWidth(); }
|
|
virtual bool scroll(ScrollDirection, ScrollGranularity, float multiplier = 1, Element** stopElement = nullptr, RenderBox* startBox = nullptr, const IntPoint& wheelEventAbsolutePoint = IntPoint());
|
|
virtual bool logicalScroll(ScrollLogicalDirection, ScrollGranularity, float multiplier = 1, Element** stopElement = nullptr);
|
|
WEBCORE_EXPORT bool canBeScrolledAndHasScrollableArea() const;
|
|
virtual bool canBeProgramaticallyScrolled() const;
|
|
virtual void autoscroll(const IntPoint&);
|
|
bool canAutoscroll() const;
|
|
IntSize calculateAutoscrollDirection(const IntPoint& windowPoint) const;
|
|
static RenderBox* findAutoscrollable(RenderObject*);
|
|
virtual void stopAutoscroll() { }
|
|
virtual void panScroll(const IntPoint&);
|
|
|
|
bool canUseOverlayScrollbars() const;
|
|
bool hasAutoScrollbar(ScrollbarOrientation) const;
|
|
bool hasAlwaysPresentScrollbar(ScrollbarOrientation) const;
|
|
|
|
bool scrollsOverflow() const { return scrollsOverflowX() || scrollsOverflowY(); }
|
|
bool scrollsOverflowX() const { return hasNonVisibleOverflow() && (style().overflowX() == Overflow::Scroll || style().overflowX() == Overflow::Auto); }
|
|
bool scrollsOverflowY() const { return hasNonVisibleOverflow() && (style().overflowY() == Overflow::Scroll || style().overflowY() == Overflow::Auto); }
|
|
|
|
bool hasHorizontalOverflow() const { return scrollWidth() != roundToInt(paddingBoxWidth()); }
|
|
bool hasVerticalOverflow() const { return scrollHeight() != roundToInt(paddingBoxHeight()); }
|
|
|
|
bool hasScrollableOverflowX() const { return scrollsOverflowX() && hasHorizontalOverflow(); }
|
|
bool hasScrollableOverflowY() const { return scrollsOverflowY() && hasVerticalOverflow(); }
|
|
|
|
LayoutBoxExtent scrollPaddingForViewportRect(const LayoutRect& viewportRect);
|
|
|
|
bool usesCompositedScrolling() const;
|
|
|
|
bool percentageLogicalHeightIsResolvable() const;
|
|
bool hasUnsplittableScrollingOverflow() const;
|
|
bool isUnsplittableForPagination() const;
|
|
|
|
bool shouldTreatChildAsReplacedInTableCells() const;
|
|
|
|
virtual LayoutRect overflowClipRect(const LayoutPoint& location, RenderFragmentContainer* = nullptr, OverlayScrollbarSizeRelevancy = IgnoreOverlayScrollbarSize, PaintPhase = PaintPhase::BlockBackground) const;
|
|
virtual LayoutRect overflowClipRectForChildLayers(const LayoutPoint& location, RenderFragmentContainer* fragment, OverlayScrollbarSizeRelevancy relevancy) const { return overflowClipRect(location, fragment, relevancy); }
|
|
LayoutRect clipRect(const LayoutPoint& location, RenderFragmentContainer*) const;
|
|
virtual bool hasControlClip() const { return false; }
|
|
virtual LayoutRect controlClipRect(const LayoutPoint&) const { return LayoutRect(); }
|
|
bool pushContentsClip(PaintInfo&, const LayoutPoint& accumulatedOffset);
|
|
void popContentsClip(PaintInfo&, PaintPhase originalPhase, const LayoutPoint& accumulatedOffset);
|
|
|
|
virtual void paintObject(PaintInfo&, const LayoutPoint&) { ASSERT_NOT_REACHED(); }
|
|
virtual void paintBoxDecorations(PaintInfo&, const LayoutPoint&);
|
|
virtual void paintMask(PaintInfo&, const LayoutPoint&);
|
|
virtual void paintClippingMask(PaintInfo&, const LayoutPoint&);
|
|
void imageChanged(WrappedImagePtr, const IntRect* = nullptr) override;
|
|
|
|
// Called when a positioned object moves but doesn't necessarily change size. A simplified layout is attempted
|
|
// that just updates the object's position. If the size does change, the object remains dirty.
|
|
bool tryLayoutDoingPositionedMovementOnly()
|
|
{
|
|
LayoutUnit oldWidth = width();
|
|
updateLogicalWidth();
|
|
// If we shrink to fit our width may have changed, so we still need full layout.
|
|
if (oldWidth != width())
|
|
return false;
|
|
updateLogicalHeight();
|
|
return true;
|
|
}
|
|
|
|
LayoutRect maskClipRect(const LayoutPoint& paintOffset);
|
|
|
|
VisiblePosition positionForPoint(const LayoutPoint&, const RenderFragmentContainer*) override;
|
|
|
|
void removeFloatingOrPositionedChildFromBlockLists();
|
|
|
|
RenderLayer* enclosingFloatPaintingLayer() const;
|
|
|
|
virtual std::optional<LayoutUnit> firstLineBaseline() const { return std::optional<LayoutUnit>(); }
|
|
virtual std::optional<LayoutUnit> inlineBlockBaseline(LineDirectionMode) const { return std::optional<LayoutUnit>(); } // Returns empty if we should skip this box when computing the baseline of an inline-block.
|
|
|
|
bool shrinkToAvoidFloats() const;
|
|
virtual bool avoidsFloats() const;
|
|
|
|
virtual void markForPaginationRelayoutIfNeeded() { }
|
|
|
|
bool isWritingModeRoot() const { return !parent() || parent()->style().writingMode() != style().writingMode(); }
|
|
|
|
bool isDeprecatedFlexItem() const { return !isInline() && !isFloatingOrOutOfFlowPositioned() && parent() && parent()->isDeprecatedFlexibleBox(); }
|
|
bool isFlexItemIncludingDeprecated() const { return !isInline() && !isFloatingOrOutOfFlowPositioned() && parent() && parent()->isFlexibleBoxIncludingDeprecated(); }
|
|
|
|
LayoutUnit lineHeight(bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const override;
|
|
LayoutUnit baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const override;
|
|
|
|
LayoutUnit offsetLeft() const override;
|
|
LayoutUnit offsetTop() const override;
|
|
|
|
LayoutPoint flipForWritingModeForChild(const RenderBox* child, const LayoutPoint&) const;
|
|
LayoutUnit flipForWritingMode(LayoutUnit position) const; // The offset is in the block direction (y for horizontal writing modes, x for vertical writing modes).
|
|
LayoutPoint flipForWritingMode(const LayoutPoint&) const;
|
|
LayoutSize flipForWritingMode(const LayoutSize&) const;
|
|
void flipForWritingMode(LayoutRect&) const;
|
|
FloatPoint flipForWritingMode(const FloatPoint&) const;
|
|
void flipForWritingMode(FloatRect&) const;
|
|
// These represent your location relative to your container as a physical offset.
|
|
// In layout related methods you almost always want the logical location (e.g. x() and y()).
|
|
LayoutPoint topLeftLocation() const;
|
|
LayoutSize topLeftLocationOffset() const;
|
|
void applyTopLeftLocationOffset(LayoutPoint& point) const
|
|
{
|
|
// This is inlined for speed, since it is used by updateLayerPosition() during scrolling.
|
|
if (!document().view()->hasFlippedBlockRenderers())
|
|
point.move(m_frameRect.x(), m_frameRect.y());
|
|
else
|
|
applyTopLeftLocationOffsetWithFlipping(point);
|
|
}
|
|
|
|
LayoutRect logicalVisualOverflowRectForPropagation(const RenderStyle*) const;
|
|
LayoutRect visualOverflowRectForPropagation(const RenderStyle*) const;
|
|
LayoutRect logicalLayoutOverflowRectForPropagation(const RenderStyle*) const;
|
|
LayoutRect layoutOverflowRectForPropagation(const RenderStyle*) const;
|
|
|
|
bool hasRenderOverflow() const { return m_overflow; }
|
|
bool hasVisualOverflow() const { return m_overflow && !borderBoxRect().contains(m_overflow->visualOverflowRect()); }
|
|
|
|
virtual bool needsPreferredWidthsRecalculation() const;
|
|
virtual void computeIntrinsicRatioInformation(FloatSize& /* intrinsicSize */, double& /* intrinsicRatio */) const { }
|
|
|
|
ScrollPosition scrollPosition() const;
|
|
LayoutSize cachedSizeForOverflowClip() const;
|
|
|
|
// Returns false if the rect has no intersection with the applied clip rect. When the context specifies edge-inclusive
|
|
// intersection, this return value allows distinguishing between no intersection and zero-area intersection.
|
|
bool applyCachedClipAndScrollPosition(LayoutRect&, const RenderLayerModelObject* container, VisibleRectContext) const;
|
|
|
|
virtual bool hasRelativeDimensions() const;
|
|
virtual bool hasRelativeLogicalHeight() const;
|
|
virtual bool hasRelativeLogicalWidth() const;
|
|
|
|
bool hasHorizontalLayoutOverflow() const
|
|
{
|
|
if (!m_overflow)
|
|
return false;
|
|
|
|
LayoutRect layoutOverflowRect = m_overflow->layoutOverflowRect();
|
|
flipForWritingMode(layoutOverflowRect);
|
|
return layoutOverflowRect.x() < x() || layoutOverflowRect.maxX() > x() + logicalWidth();
|
|
}
|
|
|
|
bool hasVerticalLayoutOverflow() const
|
|
{
|
|
if (!m_overflow)
|
|
return false;
|
|
|
|
LayoutRect layoutOverflowRect = m_overflow->layoutOverflowRect();
|
|
flipForWritingMode(layoutOverflowRect);
|
|
return layoutOverflowRect.y() < y() || layoutOverflowRect.maxY() > y() + logicalHeight();
|
|
}
|
|
|
|
virtual RenderPtr<RenderBox> createAnonymousBoxWithSameTypeAs(const RenderBox&) const
|
|
{
|
|
ASSERT_NOT_REACHED();
|
|
return nullptr;
|
|
}
|
|
|
|
ShapeOutsideInfo* shapeOutsideInfo() const
|
|
{
|
|
return ShapeOutsideInfo::isEnabledFor(*this) ? ShapeOutsideInfo::info(*this) : nullptr;
|
|
}
|
|
|
|
void markShapeOutsideDependentsForLayout()
|
|
{
|
|
if (isFloating())
|
|
removeFloatingOrPositionedChildFromBlockLists();
|
|
}
|
|
|
|
// True if this box can have a range in an outside fragmentation context.
|
|
bool canHaveOutsideFragmentRange() const { return !isRenderFragmentedFlow(); }
|
|
virtual bool needsLayoutAfterFragmentRangeChange() const { return false; }
|
|
|
|
bool isGridItem() const { return parent() && parent()->isRenderGrid() && !isExcludedFromNormalLayout(); }
|
|
bool isFlexItem() const { return parent() && parent()->isFlexibleBox() && !isExcludedFromNormalLayout(); }
|
|
|
|
virtual void adjustBorderBoxRectForPainting(LayoutRect&) { };
|
|
|
|
LayoutRect absoluteAnchorRectWithScrollMargin(bool* insideFixed = nullptr) const override;
|
|
|
|
bool shouldComputeLogicalHeightFromAspectRatio() const;
|
|
|
|
protected:
|
|
RenderBox(Element&, RenderStyle&&, BaseTypeFlags);
|
|
RenderBox(Document&, RenderStyle&&, BaseTypeFlags);
|
|
|
|
void styleWillChange(StyleDifference, const RenderStyle& newStyle) override;
|
|
void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override;
|
|
void updateFromStyle() override;
|
|
|
|
void willBeDestroyed() override;
|
|
|
|
bool createsNewFormattingContext() const;
|
|
|
|
virtual bool shouldResetLogicalHeightBeforeLayout() const { return false; }
|
|
void resetLogicalHeightBeforeLayoutIfNeeded();
|
|
|
|
virtual ItemPosition selfAlignmentNormalBehavior(const RenderBox* = nullptr) const { return ItemPosition::Stretch; }
|
|
|
|
// Returns false if it could not cheaply compute the extent (e.g. fixed background), in which case the returned rect may be incorrect.
|
|
bool getBackgroundPaintedExtent(const LayoutPoint& paintOffset, LayoutRect&) const;
|
|
virtual bool foregroundIsKnownToBeOpaqueInRect(const LayoutRect& localRect, unsigned maxDepthToTest) const;
|
|
bool computeBackgroundIsKnownToBeObscured(const LayoutPoint& paintOffset) override;
|
|
|
|
void paintBackground(const PaintInfo&, const LayoutRect&, BackgroundBleedAvoidance = BackgroundBleedNone);
|
|
|
|
void paintFillLayer(const PaintInfo&, const Color&, const FillLayer&, const LayoutRect&, BackgroundBleedAvoidance, CompositeOperator, RenderElement* backgroundObject, BaseBackgroundColorUsage = BaseBackgroundColorUse);
|
|
void paintFillLayers(const PaintInfo&, const Color&, const FillLayer&, const LayoutRect&, BackgroundBleedAvoidance = BackgroundBleedNone, CompositeOperator = CompositeOperator::SourceOver, RenderElement* backgroundObject = nullptr);
|
|
|
|
void paintMaskImages(const PaintInfo&, const LayoutRect&);
|
|
|
|
BackgroundBleedAvoidance determineBackgroundBleedAvoidance(GraphicsContext&) const;
|
|
bool backgroundHasOpaqueTopLayer() const;
|
|
|
|
void computePositionedLogicalWidth(LogicalExtentComputedValues&, RenderFragmentContainer* = nullptr) const;
|
|
|
|
LayoutUnit computeIntrinsicLogicalWidthUsing(Length logicalWidthLength, LayoutUnit availableLogicalWidth, LayoutUnit borderAndPadding) const;
|
|
virtual std::optional<LayoutUnit> computeIntrinsicLogicalContentHeightUsing(Length logicalHeightLength, std::optional<LayoutUnit> intrinsicContentHeight, LayoutUnit borderAndPadding) const;
|
|
|
|
virtual bool shouldComputeSizeAsReplaced() const { return isReplaced() && !isInlineBlockOrInlineTable(); }
|
|
|
|
void mapLocalToContainer(const RenderLayerModelObject* ancestorContainer, TransformState&, OptionSet<MapCoordinatesMode>, bool* wasFixed) const override;
|
|
const RenderObject* pushMappingToContainer(const RenderLayerModelObject*, RenderGeometryMap&) const override;
|
|
void mapAbsoluteToLocalPoint(OptionSet<MapCoordinatesMode>, TransformState&) const override;
|
|
|
|
void paintRootBoxFillLayers(const PaintInfo&);
|
|
|
|
bool skipContainingBlockForPercentHeightCalculation(const RenderBox& containingBlock, bool isPerpendicularWritingMode) const;
|
|
|
|
void incrementVisuallyNonEmptyPixelCountIfNeeded(const IntSize&);
|
|
|
|
bool shouldIgnoreAspectRatio() const;
|
|
bool shouldComputeLogicalWidthFromAspectRatio() const;
|
|
LayoutUnit computeLogicalWidthFromAspectRatioInternal() const;
|
|
LayoutUnit computeLogicalWidthFromAspectRatio(RenderFragmentContainer* = nullptr) const;
|
|
std::pair<LayoutUnit, LayoutUnit> computeMinMaxLogicalWidthFromAspectRatio() const;
|
|
|
|
static LayoutUnit blockSizeFromAspectRatio(LayoutUnit borderPaddingInlineSum, LayoutUnit borderPaddingBlockSum, double aspectRatio, BoxSizing boxSizing, LayoutUnit inlineSize)
|
|
{
|
|
if (boxSizing == BoxSizing::BorderBox)
|
|
return LayoutUnit(inlineSize / aspectRatio);
|
|
return LayoutUnit((inlineSize - borderPaddingInlineSum) / aspectRatio) + borderPaddingBlockSum;
|
|
}
|
|
|
|
void computePreferredLogicalWidths(const Length& minWidth, const Length& maxWidth, LayoutUnit borderAndPadding);
|
|
|
|
private:
|
|
bool replacedMinMaxLogicalHeightComputesAsNone(SizeType) const;
|
|
|
|
void updateShapeOutsideInfoAfterStyleChange(const RenderStyle&, const RenderStyle* oldStyle);
|
|
|
|
void updateGridPositionAfterStyleChange(const RenderStyle&, const RenderStyle* oldStyle);
|
|
|
|
bool scrollLayer(ScrollDirection, ScrollGranularity, float multiplier, Element** stopElement);
|
|
|
|
bool fixedElementLaysOutRelativeToFrame(const FrameView&) const;
|
|
|
|
bool includeVerticalScrollbarSize() const;
|
|
bool includeHorizontalScrollbarSize() const;
|
|
|
|
bool isScrollableOrRubberbandableBox() const override;
|
|
|
|
// Returns true if we did a full repaint.
|
|
bool repaintLayerRectsForImage(WrappedImagePtr, const FillLayer& layers, bool drawingBackground);
|
|
|
|
void computePositionedLogicalHeight(LogicalExtentComputedValues&) const;
|
|
void computePositionedLogicalWidthUsing(SizeType, Length logicalWidth, const RenderBoxModelObject& containerBlock, TextDirection containerDirection,
|
|
LayoutUnit containerLogicalWidth, LayoutUnit bordersPlusPadding,
|
|
Length logicalLeft, Length logicalRight, Length marginLogicalLeft, Length marginLogicalRight,
|
|
LogicalExtentComputedValues&) const;
|
|
void computePositionedLogicalHeightUsing(SizeType, Length logicalHeightLength, const RenderBoxModelObject& containerBlock,
|
|
LayoutUnit containerLogicalHeight, LayoutUnit bordersPlusPadding, LayoutUnit logicalHeight,
|
|
Length logicalTop, Length logicalBottom, Length marginLogicalTop, Length marginLogicalBottom,
|
|
LogicalExtentComputedValues&) const;
|
|
|
|
void computePositionedLogicalHeightReplaced(LogicalExtentComputedValues&) const;
|
|
void computePositionedLogicalWidthReplaced(LogicalExtentComputedValues&) const;
|
|
|
|
LayoutUnit fillAvailableMeasure(LayoutUnit availableLogicalWidth) const;
|
|
LayoutUnit fillAvailableMeasure(LayoutUnit availableLogicalWidth, LayoutUnit& marginStart, LayoutUnit& marginEnd) const;
|
|
|
|
virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const;
|
|
virtual void computeIntrinsicKeywordLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const
|
|
{
|
|
computeIntrinsicLogicalWidths(minLogicalWidth, maxLogicalWidth);
|
|
}
|
|
|
|
// This function calculates the minimum and maximum preferred widths for an object.
|
|
// These values are used in shrink-to-fit layout systems.
|
|
// These include tables, positioned objects, floats and flexible boxes.
|
|
virtual void computePreferredLogicalWidths();
|
|
|
|
LayoutRect frameRectForStickyPositioning() const final { return frameRect(); }
|
|
|
|
LayoutRect computeVisibleRectUsingPaintOffset(const LayoutRect&) const;
|
|
|
|
void applyTopLeftLocationOffsetWithFlipping(LayoutPoint&) const;
|
|
|
|
private:
|
|
// The width/height of the contents + borders + padding. The x/y location is relative to our container (which is not always our parent).
|
|
LayoutRect m_frameRect;
|
|
|
|
protected:
|
|
LayoutBoxExtent m_marginBox;
|
|
|
|
// The preferred logical width of the element if it were to break its lines at every possible opportunity.
|
|
LayoutUnit m_minPreferredLogicalWidth;
|
|
|
|
// The preferred logical width of the element if it never breaks any lines at all.
|
|
LayoutUnit m_maxPreferredLogicalWidth;
|
|
|
|
// For inline replaced elements, the inline box that owns us.
|
|
LegacyInlineElementBox* m_inlineBoxWrapper { nullptr };
|
|
|
|
// Our overflow information.
|
|
RefPtr<RenderOverflow> m_overflow;
|
|
|
|
private:
|
|
// Used to store state between styleWillChange and styleDidChange
|
|
static bool s_hadNonVisibleOverflow;
|
|
};
|
|
|
|
inline RenderBox* RenderBox::parentBox() const
|
|
{
|
|
if (is<RenderBox>(parent()))
|
|
return downcast<RenderBox>(parent());
|
|
|
|
ASSERT(!parent());
|
|
return nullptr;
|
|
}
|
|
|
|
inline RenderBox* RenderBox::firstChildBox() const
|
|
{
|
|
if (is<RenderBox>(firstChild()))
|
|
return downcast<RenderBox>(firstChild());
|
|
|
|
ASSERT(!firstChild());
|
|
return nullptr;
|
|
}
|
|
|
|
inline RenderBox* RenderBox::lastChildBox() const
|
|
{
|
|
if (is<RenderBox>(lastChild()))
|
|
return downcast<RenderBox>(lastChild());
|
|
|
|
ASSERT(!lastChild());
|
|
return nullptr;
|
|
}
|
|
|
|
inline RenderBox* RenderBox::previousSiblingBox() const
|
|
{
|
|
if (is<RenderBox>(previousSibling()))
|
|
return downcast<RenderBox>(previousSibling());
|
|
|
|
ASSERT(!previousSibling());
|
|
return nullptr;
|
|
}
|
|
|
|
inline RenderBox* RenderBox::nextSiblingBox() const
|
|
{
|
|
if (is<RenderBox>(nextSibling()))
|
|
return downcast<RenderBox>(nextSibling());
|
|
|
|
ASSERT(!nextSibling());
|
|
return nullptr;
|
|
}
|
|
|
|
inline void RenderBox::setInlineBoxWrapper(LegacyInlineElementBox* boxWrapper)
|
|
{
|
|
if (boxWrapper) {
|
|
ASSERT(!m_inlineBoxWrapper);
|
|
// m_inlineBoxWrapper should already be 0. Deleting it is a safeguard against security issues.
|
|
// Otherwise, there will two line box wrappers keeping the reference to this renderer, and
|
|
// only one will be notified when the renderer is getting destroyed. The second line box wrapper
|
|
// will keep a stale reference.
|
|
if (UNLIKELY(m_inlineBoxWrapper != nullptr))
|
|
deleteLineBoxWrapper();
|
|
}
|
|
|
|
m_inlineBoxWrapper = boxWrapper;
|
|
}
|
|
|
|
LayoutUnit synthesizedBaselineFromBorderBox(const RenderBox&, LineDirectionMode);
|
|
|
|
} // namespace WebCore
|
|
|
|
SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderBox, isBox())
|