| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * Copyright (C) 2003, 2006, 2007, 2009 Apple Inc. All rights reserved. |
| * Copyright (C) 2010 Google 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. |
| * |
| */ |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_BOX_MODEL_OBJECT_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_BOX_MODEL_OBJECT_H_ |
| |
| #include <memory> |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/core/layout/background_bleed_avoidance.h" |
| #include "third_party/blink/renderer/core/layout/content_change_type.h" |
| #include "third_party/blink/renderer/core/layout/layout_object.h" |
| #include "third_party/blink/renderer/platform/geometry/layout_rect.h" |
| #include "third_party/blink/renderer/platform/text/writing_mode_utils.h" |
| |
| namespace blink { |
| |
| class PaintLayer; |
| class PaintLayerScrollableArea; |
| |
| enum PaintLayerType { |
| kNoPaintLayer, |
| kNormalPaintLayer, |
| // A forced or overflow clip layer is required for bookkeeping purposes, |
| // but does not force a layer to be self painting. |
| kOverflowClipPaintLayer, |
| kForcedPaintLayer |
| }; |
| |
| enum : uint32_t { |
| kBackgroundPaintInGraphicsLayer = 1 << 0, |
| kBackgroundPaintInScrollingContents = 1 << 1 |
| }; |
| using BackgroundPaintLocation = uint32_t; |
| |
| // Modes for some of the line-related functions. |
| enum LinePositionMode { |
| kPositionOnContainingLine, |
| kPositionOfInteriorLineBoxes |
| }; |
| enum LineDirectionMode { kHorizontalLine, kVerticalLine }; |
| |
| // This class is the base class for all CSS objects. |
| // |
| // All CSS objects follow the box model object. See THE BOX MODEL section in |
| // LayoutBox for more information. |
| // |
| // This class actually doesn't have the box model but it exposes some common |
| // functions or concepts that sub-classes can extend upon. For example, there |
| // are accessors for margins, borders, paddings and borderBoundingBox(). |
| // |
| // The reason for this partial implementation is that the 2 classes inheriting |
| // from it (LayoutBox and LayoutInline) have different requirements but need to |
| // have a PaintLayer. For a full implementation of the box model, see LayoutBox. |
| // |
| // An important member of this class is PaintLayer, which is stored in a rare- |
| // data pattern (see: Layer()). PaintLayers are instantiated for several reasons |
| // based on the return value of layerTypeRequired(). |
| // Interestingly, most SVG objects inherit from LayoutSVGModelObject and thus |
| // can't have a PaintLayer. This is an unfortunate artifact of our |
| // design as it limits code sharing and prevents hardware accelerating SVG |
| // (the current design require a PaintLayer for compositing). |
| // |
| // |
| // ***** COORDINATE SYSTEMS ***** |
| // |
| // In order to fully understand LayoutBoxModelObject and the inherited classes, |
| // we need to introduce the concept of coordinate systems. |
| // There is 3 main coordinate systems: |
| // - physical coordinates: it is the coordinate system used for painting and |
| // correspond to physical direction as seen on the physical display (screen, |
| // printed page). In CSS, 'top', 'right', 'bottom', 'left' are all in physical |
| // coordinates. The code matches this convention too. |
| // |
| // - logical coordinates: this is the coordinate system used for layout. It is |
| // determined by 'writing-mode' and 'direction'. Any property using 'before', |
| // 'after', 'start' or 'end' is in logical coordinates. Those are also named |
| // respectively 'logical top', 'logical bottom', 'logical left' and |
| // 'logical right'. |
| // |
| // Example with writing-mode: vertical-rl; direction: ltr; |
| // |
| // 'top' / 'start' side |
| // |
| // block-flow direction |
| // <------------------------------------ | |
| // ------------------------------------- | |
| // | c | s | | |
| // 'left' | o | o | | inline 'right' |
| // / | n | m | | direction / |
| // 'after' | t | e | | 'before' |
| // side | e | | | side |
| // | n | | | |
| // | t | | | |
| // ------------------------------------- v |
| // |
| // 'bottom' / 'end' side |
| // |
| // See https://drafts.csswg.org/css-writing-modes-3/#text-flow for some |
| // extra details. |
| // |
| // - physical coordinates with flipped block-flow direction: those are physical |
| // coordinates but we flipped the block direction. Almost all geometries |
| // in box layout use this coordinate space, except those having explicit |
| // "Logical" or "Physical" prefix in their names. |
| // |
| // For more, see Source/core/layout/README.md ### Coordinate Spaces. |
| class CORE_EXPORT LayoutBoxModelObject : public LayoutObject { |
| public: |
| LayoutBoxModelObject(ContainerNode*); |
| ~LayoutBoxModelObject() override; |
| |
| // This is the only way layers should ever be destroyed. |
| void DestroyLayer(); |
| |
| LayoutSize RelativePositionOffset() const; |
| LayoutSize RelativePositionLogicalOffset() const { |
| return StyleRef().IsHorizontalWritingMode() |
| ? RelativePositionOffset() |
| : RelativePositionOffset().TransposedSize(); |
| } |
| |
| // Populates StickyPositionConstraints, setting the sticky box rect, |
| // containing block rect and updating the constraint offsets according to the |
| // available space. |
| FloatRect ComputeStickyConstrainingRect() const; |
| void UpdateStickyPositionConstraints() const; |
| LayoutSize StickyPositionOffset() const; |
| bool IsSlowRepaintConstrainedObject() const; |
| |
| LayoutSize OffsetForInFlowPosition() const; |
| |
| // IE extensions. Used to calculate offsetWidth/Height. Overridden by inlines |
| // (LayoutInline) to return the remaining width on a given line (and the |
| // height of a single line). |
| virtual LayoutUnit OffsetLeft(const Element*) const; |
| virtual LayoutUnit OffsetTop(const Element*) const; |
| virtual LayoutUnit OffsetWidth() const = 0; |
| virtual LayoutUnit OffsetHeight() const = 0; |
| |
| int PixelSnappedOffsetLeft(const Element* parent) const { |
| return RoundToInt(OffsetLeft(parent)); |
| } |
| int PixelSnappedOffsetTop(const Element* parent) const { |
| return RoundToInt(OffsetTop(parent)); |
| } |
| virtual int PixelSnappedOffsetWidth(const Element*) const; |
| virtual int PixelSnappedOffsetHeight(const Element*) const; |
| |
| bool HasSelfPaintingLayer() const; |
| PaintLayer* Layer() const { return FirstFragment().Layer(); } |
| // The type of PaintLayer to instantiate. Any value returned from this |
| // function other than NoPaintLayer will lead to a PaintLayer being created. |
| virtual PaintLayerType LayerTypeRequired() const = 0; |
| PaintLayerScrollableArea* GetScrollableArea() const; |
| |
| virtual void UpdateFromStyle(); |
| |
| // This will work on inlines to return the bounding box of all of the lines' |
| // border boxes. |
| virtual IntRect BorderBoundingBox() const = 0; |
| |
| virtual LayoutRect VisualOverflowRect() const = 0; |
| |
| // Checks if this box, or any of it's descendants, or any of it's |
| // continuations, will take up space in the layout of the page. |
| bool HasNonEmptyLayoutSize() const; |
| bool UsesCompositedScrolling() const; |
| |
| // Returns which layers backgrounds should be painted into for overflow |
| // scrolling boxes. |
| // TODO(yigu): PaintLayerScrollableArea::ComputeNeedsCompositedScrolling |
| // calls this method to obtain main thread scrolling reasons due to |
| // background paint location. Once the cases get handled on compositor the |
| // parameter "reasons" could be removed. |
| BackgroundPaintLocation GetBackgroundPaintLocation( |
| uint32_t* main_thread_scrolling_reasons = nullptr) const; |
| |
| // These return the CSS computed padding values. |
| LayoutUnit ComputedCSSPaddingTop() const { |
| return ComputedCSSPadding(StyleRef().PaddingTop()); |
| } |
| LayoutUnit ComputedCSSPaddingBottom() const { |
| return ComputedCSSPadding(StyleRef().PaddingBottom()); |
| } |
| LayoutUnit ComputedCSSPaddingLeft() const { |
| return ComputedCSSPadding(StyleRef().PaddingLeft()); |
| } |
| LayoutUnit ComputedCSSPaddingRight() const { |
| return ComputedCSSPadding(StyleRef().PaddingRight()); |
| } |
| LayoutUnit ComputedCSSPaddingBefore() const { |
| return ComputedCSSPadding(StyleRef().PaddingBefore()); |
| } |
| LayoutUnit ComputedCSSPaddingAfter() const { |
| return ComputedCSSPadding(StyleRef().PaddingAfter()); |
| } |
| LayoutUnit ComputedCSSPaddingStart() const { |
| return ComputedCSSPadding(StyleRef().PaddingStart()); |
| } |
| LayoutUnit ComputedCSSPaddingEnd() const { |
| return ComputedCSSPadding(StyleRef().PaddingEnd()); |
| } |
| LayoutUnit ComputedCSSPaddingOver() const { |
| return ComputedCSSPadding(StyleRef().PaddingOver()); |
| } |
| LayoutUnit ComputedCSSPaddingUnder() const { |
| return ComputedCSSPadding(StyleRef().PaddingUnder()); |
| } |
| |
| // These functions are used during layout. |
| // - Table cells override them to include the intrinsic padding (see |
| // explanations in LayoutTableCell). |
| // - Table override them to exclude padding with collapsing borders. |
| virtual LayoutUnit PaddingTop() const { return ComputedCSSPaddingTop(); } |
| virtual LayoutUnit PaddingBottom() const { |
| return ComputedCSSPaddingBottom(); |
| } |
| virtual LayoutUnit PaddingLeft() const { return ComputedCSSPaddingLeft(); } |
| virtual LayoutUnit PaddingRight() const { return ComputedCSSPaddingRight(); } |
| |
| LayoutUnit PaddingBefore() const { |
| return PhysicalPaddingToLogical().Before(); |
| } |
| LayoutUnit PaddingAfter() const { return PhysicalPaddingToLogical().After(); } |
| LayoutUnit PaddingStart() const { return PhysicalPaddingToLogical().Start(); } |
| LayoutUnit PaddingEnd() const { return PhysicalPaddingToLogical().End(); } |
| LayoutUnit PaddingOver() const { return PhysicalPaddingToLogical().Over(); } |
| LayoutUnit PaddingUnder() const { return PhysicalPaddingToLogical().Under(); } |
| |
| virtual LayoutUnit BorderTop() const { |
| return LayoutUnit(StyleRef().BorderTopWidth()); |
| } |
| virtual LayoutUnit BorderBottom() const { |
| return LayoutUnit(StyleRef().BorderBottomWidth()); |
| } |
| virtual LayoutUnit BorderLeft() const { |
| return LayoutUnit(StyleRef().BorderLeftWidth()); |
| } |
| virtual LayoutUnit BorderRight() const { |
| return LayoutUnit(StyleRef().BorderRightWidth()); |
| } |
| |
| LayoutUnit BorderBefore() const { return PhysicalBorderToLogical().Before(); } |
| LayoutUnit BorderAfter() const { return PhysicalBorderToLogical().After(); } |
| LayoutUnit BorderStart() const { return PhysicalBorderToLogical().Start(); } |
| LayoutUnit BorderEnd() const { return PhysicalBorderToLogical().End(); } |
| LayoutUnit BorderOver() const { return PhysicalBorderToLogical().Over(); } |
| LayoutUnit BorderUnder() const { return PhysicalBorderToLogical().Under(); } |
| |
| LayoutUnit BorderWidth() const { return BorderLeft() + BorderRight(); } |
| LayoutUnit BorderHeight() const { return BorderTop() + BorderBottom(); } |
| |
| LayoutRectOutsets BorderBoxOutsets() const { |
| return LayoutRectOutsets(BorderTop(), BorderRight(), BorderBottom(), |
| BorderLeft()); |
| } |
| |
| LayoutRectOutsets PaddingOutsets() const { |
| return LayoutRectOutsets(PaddingTop(), PaddingRight(), PaddingBottom(), |
| PaddingLeft()); |
| } |
| |
| // Insets from the border box to the inside of the border. |
| LayoutRectOutsets BorderInsets() const { |
| return LayoutRectOutsets(-BorderTop(), -BorderRight(), -BorderBottom(), |
| -BorderLeft()); |
| } |
| |
| bool HasBorderOrPadding() const { |
| return StyleRef().HasBorder() || StyleRef().HasPadding(); |
| } |
| |
| LayoutUnit BorderAndPaddingStart() const { |
| return BorderStart() + PaddingStart(); |
| } |
| DISABLE_CFI_PERF LayoutUnit BorderAndPaddingBefore() const { |
| return BorderBefore() + PaddingBefore(); |
| } |
| DISABLE_CFI_PERF LayoutUnit BorderAndPaddingAfter() const { |
| return BorderAfter() + PaddingAfter(); |
| } |
| LayoutUnit BorderAndPaddingOver() const { |
| return BorderOver() + PaddingOver(); |
| } |
| LayoutUnit BorderAndPaddingUnder() const { |
| return BorderUnder() + PaddingUnder(); |
| } |
| |
| DISABLE_CFI_PERF LayoutUnit BorderAndPaddingHeight() const { |
| return BorderTop() + BorderBottom() + PaddingTop() + PaddingBottom(); |
| } |
| DISABLE_CFI_PERF LayoutUnit BorderAndPaddingWidth() const { |
| return BorderLeft() + BorderRight() + PaddingLeft() + PaddingRight(); |
| } |
| DISABLE_CFI_PERF LayoutUnit BorderAndPaddingLogicalHeight() const { |
| return HasBorderOrPadding() |
| ? BorderAndPaddingBefore() + BorderAndPaddingAfter() |
| : LayoutUnit(); |
| } |
| DISABLE_CFI_PERF LayoutUnit BorderAndPaddingLogicalWidth() const { |
| return BorderStart() + BorderEnd() + PaddingStart() + PaddingEnd(); |
| } |
| DISABLE_CFI_PERF LayoutUnit BorderAndPaddingLogicalLeft() const { |
| return StyleRef().IsHorizontalWritingMode() ? BorderLeft() + PaddingLeft() |
| : BorderTop() + PaddingTop(); |
| } |
| |
| LayoutUnit BorderLogicalLeft() const { |
| return LayoutUnit(StyleRef().IsHorizontalWritingMode() ? BorderLeft() |
| : BorderTop()); |
| } |
| LayoutUnit BorderLogicalRight() const { |
| return LayoutUnit(StyleRef().IsHorizontalWritingMode() ? BorderRight() |
| : BorderBottom()); |
| } |
| |
| LayoutUnit PaddingLogicalWidth() const { |
| return PaddingStart() + PaddingEnd(); |
| } |
| LayoutUnit PaddingLogicalHeight() const { |
| return PaddingBefore() + PaddingAfter(); |
| } |
| |
| LayoutUnit CollapsedBorderAndCSSPaddingLogicalWidth() const { |
| return ComputedCSSPaddingStart() + ComputedCSSPaddingEnd() + BorderStart() + |
| BorderEnd(); |
| } |
| LayoutUnit CollapsedBorderAndCSSPaddingLogicalHeight() const { |
| return ComputedCSSPaddingBefore() + ComputedCSSPaddingAfter() + |
| BorderBefore() + BorderAfter(); |
| } |
| |
| virtual LayoutUnit MarginTop() const = 0; |
| virtual LayoutUnit MarginBottom() const = 0; |
| virtual LayoutUnit MarginLeft() const = 0; |
| virtual LayoutUnit MarginRight() const = 0; |
| |
| LayoutUnit MarginBefore(const ComputedStyle* other_style = nullptr) const { |
| return PhysicalMarginToLogical(other_style).Before(); |
| } |
| LayoutUnit MarginAfter(const ComputedStyle* other_style = nullptr) const { |
| return PhysicalMarginToLogical(other_style).After(); |
| } |
| LayoutUnit MarginStart(const ComputedStyle* other_style = nullptr) const { |
| return PhysicalMarginToLogical(other_style).Start(); |
| } |
| LayoutUnit MarginEnd(const ComputedStyle* other_style = nullptr) const { |
| return PhysicalMarginToLogical(other_style).End(); |
| } |
| LayoutUnit MarginLineLeft() const { |
| return PhysicalMarginToLogical(nullptr).LineLeft(); |
| } |
| LayoutUnit MarginLineRight() const { |
| return PhysicalMarginToLogical(nullptr).LineRight(); |
| } |
| LayoutUnit MarginOver() const { |
| return PhysicalMarginToLogical(nullptr).Over(); |
| } |
| LayoutUnit MarginUnder() const { |
| return PhysicalMarginToLogical(nullptr).Under(); |
| } |
| |
| DISABLE_CFI_PERF LayoutUnit MarginHeight() const { |
| return MarginTop() + MarginBottom(); |
| } |
| DISABLE_CFI_PERF LayoutUnit MarginWidth() const { |
| return MarginLeft() + MarginRight(); |
| } |
| DISABLE_CFI_PERF LayoutUnit MarginLogicalHeight() const { |
| return MarginBefore() + MarginAfter(); |
| } |
| DISABLE_CFI_PERF LayoutUnit MarginLogicalWidth() const { |
| return MarginStart() + MarginEnd(); |
| } |
| |
| bool HasInlineDirectionBordersPaddingOrMargin() const { |
| return HasInlineDirectionBordersOrPadding() || MarginStart() || MarginEnd(); |
| } |
| bool HasInlineDirectionBordersOrPadding() const { |
| return BorderStart() || BorderEnd() || PaddingStart() || PaddingEnd(); |
| } |
| |
| virtual LayoutUnit ContainingBlockLogicalWidthForContent() const; |
| |
| virtual void ChildBecameNonInline(LayoutObject* /*child*/) {} |
| |
| // Overridden by subclasses to determine line height and baseline position. |
| virtual LayoutUnit LineHeight( |
| bool first_line, |
| LineDirectionMode, |
| LinePositionMode = kPositionOnContainingLine) const = 0; |
| virtual LayoutUnit BaselinePosition( |
| FontBaseline, |
| bool first_line, |
| LineDirectionMode, |
| LinePositionMode = kPositionOnContainingLine) const = 0; |
| |
| const LayoutObject* PushMappingToContainer( |
| const LayoutBoxModelObject* ancestor_to_stop_at, |
| LayoutGeometryMap&) const override; |
| |
| void ContentChanged(ContentChangeType); |
| bool HasAcceleratedCompositing() const; |
| |
| void ComputeLayerHitTestRects(LayerHitTestRects&, TouchAction) const override; |
| |
| // Returns true if the background is painted opaque in the given rect. |
| // The query rect is given in local coordinate system. |
| virtual bool BackgroundIsKnownToBeOpaqueInRect(const LayoutRect&) const { |
| return false; |
| } |
| |
| // This object's background is transferred to its LayoutView if: |
| // 1. it's the document element, or |
| // 2. it's the first <body> if the document element is <html> and doesn't have |
| // a background. http://www.w3.org/TR/css3-background/#body-background |
| // If it's the case, the used background should be the initial value (i.e. |
| // transparent). The first condition is actually an implementation detail |
| // because we paint the view background in ViewPainter instead of the painter |
| // of the layout object of the document element. |
| bool BackgroundTransfersToView( |
| const ComputedStyle* document_element_style = nullptr) const; |
| |
| void AbsoluteQuads(Vector<FloatQuad>& quads, |
| MapCoordinatesFlags mode = 0) const override; |
| |
| virtual LayoutUnit OverrideContainingBlockContentWidth() const { |
| NOTREACHED(); |
| return LayoutUnit(-1); |
| } |
| virtual LayoutUnit OverrideContainingBlockContentHeight() const { |
| NOTREACHED(); |
| return LayoutUnit(-1); |
| } |
| virtual bool HasOverrideContainingBlockContentWidth() const { return false; } |
| virtual bool HasOverrideContainingBlockContentHeight() const { return false; } |
| |
| // Returns the continuation associated with |this|. |
| // Returns nullptr if no continuation is associated with |this|. |
| // |
| // See the section about CONTINUATIONS AND ANONYMOUS LAYOUTBLOCKFLOWS in |
| // LayoutInline for more details about them. |
| // |
| // Our implementation uses a HashMap to store them to avoid paying the cost |
| // for each LayoutBoxModelObject (|continuationMap| in the cpp file). |
| // public only for NGOutOfFlowLayoutPart, otherwise protected. |
| LayoutBoxModelObject* Continuation() const; |
| |
| protected: |
| // Compute absolute quads for |this|, but not any continuations. May only be |
| // called for objects which can be or have continuations, i.e. LayoutInline or |
| // LayoutBlockFlow. |
| virtual void AbsoluteQuadsForSelf(Vector<FloatQuad>& quads, |
| MapCoordinatesFlags mode = 0) const; |
| |
| void WillBeDestroyed() override; |
| |
| LayoutPoint AdjustedPositionRelativeTo(const LayoutPoint&, |
| const Element*) const; |
| |
| // Set the next link in the continuation chain. |
| // |
| // See continuation above for more details. |
| void SetContinuation(LayoutBoxModelObject*); |
| |
| virtual LayoutSize AccumulateInFlowPositionOffsets() const { |
| return LayoutSize(); |
| } |
| |
| LayoutRect LocalCaretRectForEmptyElement(LayoutUnit width, |
| LayoutUnit text_indent_offset) const; |
| |
| enum RegisterPercentageDescendant { |
| kDontRegisterPercentageDescendant, |
| kRegisterPercentageDescendant, |
| }; |
| bool HasAutoHeightOrContainingBlockWithAutoHeight( |
| RegisterPercentageDescendant = kRegisterPercentageDescendant) const; |
| LayoutBlock* ContainingBlockForAutoHeightDetection( |
| Length logical_height) const; |
| |
| void AddOutlineRectsForNormalChildren(Vector<LayoutRect>&, |
| const LayoutPoint& additional_offset, |
| NGOutlineType) const; |
| void AddOutlineRectsForDescendant(const LayoutObject& descendant, |
| Vector<LayoutRect>&, |
| const LayoutPoint& additional_offset, |
| NGOutlineType) const; |
| |
| void AddLayerHitTestRects(LayerHitTestRects&, |
| const PaintLayer*, |
| const LayoutPoint&, |
| TouchAction, |
| const LayoutRect&, |
| TouchAction) const override; |
| |
| void StyleWillChange(StyleDifference, |
| const ComputedStyle& new_style) override; |
| void StyleDidChange(StyleDifference, const ComputedStyle* old_style) override; |
| |
| void InvalidateStickyConstraints(); |
| |
| public: |
| // These functions are only used internally to manipulate the layout tree |
| // structure via remove/insert/appendChildNode. |
| // Since they are typically called only to move objects around within |
| // anonymous blocks (which only have layers in the case of column spans), the |
| // default for fullRemoveInsert is false rather than true. |
| void MoveChildTo(LayoutBoxModelObject* to_box_model_object, |
| LayoutObject* child, |
| LayoutObject* before_child, |
| bool full_remove_insert = false); |
| void MoveChildTo(LayoutBoxModelObject* to_box_model_object, |
| LayoutObject* child, |
| bool full_remove_insert = false) { |
| MoveChildTo(to_box_model_object, child, nullptr, full_remove_insert); |
| } |
| void MoveAllChildrenTo(LayoutBoxModelObject* to_box_model_object, |
| bool full_remove_insert = false) { |
| MoveAllChildrenTo(to_box_model_object, nullptr, full_remove_insert); |
| } |
| void MoveAllChildrenTo(LayoutBoxModelObject* to_box_model_object, |
| LayoutObject* before_child, |
| bool full_remove_insert = false) { |
| MoveChildrenTo(to_box_model_object, SlowFirstChild(), nullptr, before_child, |
| full_remove_insert); |
| } |
| // Move all of the kids from |startChild| up to but excluding |endChild|. 0 |
| // can be passed as the |endChild| to denote that all the kids from |
| // |startChild| onwards should be moved. |
| void MoveChildrenTo(LayoutBoxModelObject* to_box_model_object, |
| LayoutObject* start_child, |
| LayoutObject* end_child, |
| bool full_remove_insert = false) { |
| MoveChildrenTo(to_box_model_object, start_child, end_child, nullptr, |
| full_remove_insert); |
| } |
| virtual void MoveChildrenTo(LayoutBoxModelObject* to_box_model_object, |
| LayoutObject* start_child, |
| LayoutObject* end_child, |
| LayoutObject* before_child, |
| bool full_remove_insert = false); |
| |
| private: |
| void CreateLayerAfterStyleChange(); |
| |
| LayoutUnit ComputedCSSPadding(const Length&) const; |
| bool IsBoxModelObject() const final { return true; } |
| |
| PhysicalToLogicalGetter<LayoutUnit, LayoutBoxModelObject> |
| PhysicalPaddingToLogical() const { |
| return PhysicalToLogicalGetter<LayoutUnit, LayoutBoxModelObject>( |
| StyleRef().GetWritingMode(), StyleRef().Direction(), *this, |
| &LayoutBoxModelObject::PaddingTop, &LayoutBoxModelObject::PaddingRight, |
| &LayoutBoxModelObject::PaddingBottom, |
| &LayoutBoxModelObject::PaddingLeft); |
| } |
| |
| PhysicalToLogicalGetter<LayoutUnit, LayoutBoxModelObject> |
| PhysicalMarginToLogical(const ComputedStyle* other_style) const { |
| const auto& style = other_style ? *other_style : StyleRef(); |
| return PhysicalToLogicalGetter<LayoutUnit, LayoutBoxModelObject>( |
| style.GetWritingMode(), style.Direction(), *this, |
| &LayoutBoxModelObject::MarginTop, &LayoutBoxModelObject::MarginRight, |
| &LayoutBoxModelObject::MarginBottom, &LayoutBoxModelObject::MarginLeft); |
| } |
| |
| PhysicalToLogicalGetter<LayoutUnit, LayoutBoxModelObject> |
| PhysicalBorderToLogical() const { |
| return PhysicalToLogicalGetter<LayoutUnit, LayoutBoxModelObject>( |
| StyleRef().GetWritingMode(), StyleRef().Direction(), *this, |
| &LayoutBoxModelObject::BorderTop, &LayoutBoxModelObject::BorderRight, |
| &LayoutBoxModelObject::BorderBottom, &LayoutBoxModelObject::BorderLeft); |
| } |
| }; |
| |
| DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutBoxModelObject, IsBoxModelObject()); |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_BOX_MODEL_OBJECT_H_ |
