| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * Copyright (C) 2003, 2006, 2007 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #ifndef SKY_ENGINE_CORE_RENDERING_RENDERBOX_H_ |
| #define SKY_ENGINE_CORE_RENDERING_RENDERBOX_H_ |
| |
| #include "sky/engine/core/rendering/FilterEffectRenderer.h" |
| #include "sky/engine/core/rendering/RenderBoxModelObject.h" |
| #include "sky/engine/core/rendering/RenderOverflow.h" |
| |
| namespace blink { |
| |
| struct LayerPaintingInfo; |
| struct PaintInfo; |
| class HitTestingTransformState; |
| class TransformationMatrix; |
| |
| enum SizeType { MainOrPreferredSize, MinSize, MaxSize }; |
| enum AvailableLogicalHeightType { ExcludeMarginBorderPadding, IncludeMarginBorderPadding }; |
| enum MarginDirection { BlockDirection, InlineDirection }; |
| |
| enum ShouldComputePreferred { ComputeActual, ComputePreferred }; |
| |
| enum ContentsClipBehavior { ForceContentsClip, SkipContentsClipIfPossible }; |
| |
| struct RenderBoxRareData { |
| WTF_MAKE_NONCOPYABLE(RenderBoxRareData); WTF_MAKE_FAST_ALLOCATED; |
| public: |
| RenderBoxRareData() |
| : m_inlineBoxWrapper(0) |
| , m_overrideLogicalContentHeight(-1) |
| , m_overrideLogicalContentWidth(-1) |
| { |
| } |
| |
| // For inline replaced elements, the inline box that owns us. |
| InlineBox* m_inlineBoxWrapper; |
| LayoutUnit m_overrideLogicalContentHeight; |
| LayoutUnit m_overrideLogicalContentWidth; |
| }; |
| |
| enum LayerType { |
| NoLayer, |
| NormalLayer, |
| // An overflow clip layer is required for bookkeeping purposes, |
| // but does not force a layer to be self painting. |
| OverflowClipLayer, |
| }; |
| |
| struct FontBaselineOrAuto { |
| FontBaselineOrAuto() |
| : m_auto(true) |
| , m_baseline(AlphabeticBaseline) |
| { |
| } |
| FontBaselineOrAuto(FontBaseline baseline) |
| : m_auto(false) |
| , m_baseline(baseline) |
| { |
| } |
| bool m_auto; |
| FontBaseline m_baseline; |
| }; |
| |
| class RenderBox : public RenderBoxModelObject { |
| public: |
| explicit RenderBox(ContainerNode*); |
| |
| // hasAutoZIndex only returns true if the element is positioned or a flex-item since |
| // position:static elements that are not flex-items get their z-index coerced to auto. |
| virtual LayerType layerTypeRequired() const |
| { |
| if (isPositioned() || createsGroup() || hasClipPath() || hasTransform() || !style()->hasAutoZIndex()) |
| return NormalLayer; |
| if (hasOverflowClip()) |
| return OverflowClipLayer; |
| return NoLayer; |
| } |
| |
| void destroyLayer(); |
| void createLayer(LayerType); |
| bool hasSelfPaintingLayer() const; |
| RenderLayer* layer() const { return m_layer.get(); } |
| |
| // Use this with caution! No type checking is done! |
| RenderBox* firstChildBox() const; |
| RenderBox* lastChildBox() const; |
| |
| LayoutUnit x() const { return m_frameRect.x(); } |
| LayoutUnit y() const { return m_frameRect.y(); } |
| LayoutUnit width() const { return m_frameRect.width(); } |
| LayoutUnit height() const { return m_frameRect.height(); } |
| |
| int pixelSnappedWidth() const { return m_frameRect.pixelSnappedWidth(); } |
| int pixelSnappedHeight() const { return m_frameRect.pixelSnappedHeight(); } |
| |
| // 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()). |
| LayoutUnit top() const { return location().y(); } |
| LayoutUnit left() const { return location().x(); } |
| |
| void setX(LayoutUnit x) { m_frameRect.setX(x); } |
| void setY(LayoutUnit y) { m_frameRect.setY(y); } |
| void setWidth(LayoutUnit width) { m_frameRect.setWidth(width); } |
| void setHeight(LayoutUnit height) { m_frameRect.setHeight(height); } |
| |
| LayoutUnit logicalLeft() const { return x(); } |
| LayoutUnit logicalRight() const { return logicalLeft() + logicalWidth(); } |
| LayoutUnit logicalTop() const { return y(); } |
| LayoutUnit logicalBottom() const { return logicalTop() + logicalHeight(); } |
| LayoutUnit logicalWidth() const { return width(); } |
| LayoutUnit logicalHeight() const { return height(); } |
| |
| LayoutUnit constrainLogicalWidthByMinMax(LayoutUnit, LayoutUnit, RenderBlock*) const; |
| LayoutUnit constrainLogicalHeightByMinMax(LayoutUnit logicalHeight, LayoutUnit intrinsicContentHeight) const; |
| LayoutUnit constrainContentBoxLogicalHeightByMinMax(LayoutUnit logicalHeight, LayoutUnit intrinsicContentHeight) const; |
| |
| int pixelSnappedLogicalHeight() const { return pixelSnappedHeight(); } |
| int pixelSnappedLogicalWidth() const { return pixelSnappedWidth(); } |
| |
| void setLogicalLeft(LayoutUnit left) |
| { |
| setX(left); |
| } |
| void setLogicalTop(LayoutUnit top) |
| { |
| setY(top); |
| } |
| void setLogicalLocation(const LayoutPoint& location) |
| { |
| setLocation(location); |
| } |
| void setLogicalWidth(LayoutUnit size) |
| { |
| setWidth(size); |
| } |
| void setLogicalHeight(LayoutUnit size) |
| { |
| setHeight(size); |
| } |
| void setLogicalSize(const LayoutSize& size) |
| { |
| setSize(size); |
| } |
| |
| LayoutPoint location() const { return m_frameRect.location(); } |
| LayoutSize locationOffset() const { return LayoutSize(x(), y()); } |
| LayoutSize size() const { return m_frameRect.size(); } |
| IntSize pixelSnappedSize() const { return m_frameRect.pixelSnappedSize(); } |
| |
| void setLocation(const LayoutPoint& location) { m_frameRect.setLocation(location); } |
| |
| void setSize(const LayoutSize& size) { m_frameRect.setSize(size); } |
| void move(LayoutUnit dx, LayoutUnit dy) { m_frameRect.move(dx, dy); } |
| |
| LayoutRect frameRect() const { return m_frameRect; } |
| IntRect pixelSnappedFrameRect() const { return pixelSnappedIntRect(m_frameRect); } |
| void setFrameRect(const LayoutRect& rect) { m_frameRect = rect; } |
| |
| LayoutRect borderBoxRect() const { return LayoutRect(LayoutPoint(), size()); } |
| LayoutRect paddingBoxRect() const { return LayoutRect(borderLeft(), borderTop(), clientWidth(), clientHeight()); } |
| IntRect pixelSnappedBorderBoxRect() const { return IntRect(IntPoint(), m_frameRect.pixelSnappedSize()); } |
| virtual IntRect borderBoundingBox() const override final { return pixelSnappedBorderBoxRect(); } |
| |
| // The content area of the box (excludes padding - and intrinsic padding for table cells, etc... - and border). |
| LayoutRect contentBoxRect() const { return LayoutRect(borderLeft() + paddingLeft(), borderTop() + paddingTop(), contentWidth(), contentHeight()); } |
| // The content box in absolute coords. Ignores transforms. |
| IntRect absoluteContentBox() const; |
| // The content box converted to absolute coords (taking transforms into account). |
| FloatQuad absoluteContentQuad() const; |
| |
| FloatPoint perspectiveOrigin() const; |
| |
| // This returns the content area of the box (excluding padding and border). The only difference with contentBoxRect is that computedCSSContentBoxRect |
| // does include the intrinsic padding in the content box as this is what some callers expect (like getComputedStyle). |
| LayoutRect computedCSSContentBoxRect() const { return LayoutRect(borderLeft() + computedCSSPaddingLeft(), borderTop() + computedCSSPaddingTop(), clientWidth() - computedCSSPaddingLeft() - computedCSSPaddingRight(), clientHeight() - computedCSSPaddingTop() - computedCSSPaddingBottom()); } |
| |
| virtual void addFocusRingRects(Vector<IntRect>&, const LayoutPoint& additionalOffset, const RenderBox* paintContainer = 0) const override; |
| |
| // Use this with caution! No type checking is done! |
| RenderBox* previousSiblingBox() const; |
| RenderBox* nextSiblingBox() const; |
| RenderBox* parentBox() const; |
| |
| // Visual and layout overflow are in the coordinate space of the box. This means that they aren't purely physical directions. |
| // For horizontal-tb and vertical-lr they will match physical directions, but for horizontal-bt and vertical-rl, the top/bottom and left/right |
| // respectively are flipped when compared to their physical counterparts. For example minX is on the left in vertical-lr, |
| // but it is on the right in vertical-rl. |
| LayoutRect layoutOverflowRect() const { return m_overflow ? m_overflow->layoutOverflowRect() : paddingBoxRect(); } |
| IntRect pixelSnappedLayoutOverflowRect() const { return pixelSnappedIntRect(layoutOverflowRect()); } |
| LayoutSize maxLayoutOverflow() const { return LayoutSize(layoutOverflowRect().maxX(), layoutOverflowRect().maxY()); } |
| LayoutUnit logicalLeftLayoutOverflow() const { return layoutOverflowRect().x(); } |
| LayoutUnit logicalRightLayoutOverflow() const { return layoutOverflowRect().maxX(); } |
| |
| virtual LayoutRect visualOverflowRect() const { return m_overflow ? m_overflow->visualOverflowRect() : borderBoxRect(); } |
| LayoutUnit logicalLeftVisualOverflow() const { return visualOverflowRect().x(); } |
| LayoutUnit logicalRightVisualOverflow() const { return visualOverflowRect().maxX(); } |
| |
| LayoutRect contentsVisualOverflowRect() const { return m_overflow ? m_overflow->contentsVisualOverflowRect() : LayoutRect(); } |
| |
| void addLayoutOverflow(const LayoutRect&); |
| void addVisualOverflow(const LayoutRect&); |
| |
| // Clipped by the contents clip, if one exists. |
| void addContentsVisualOverflow(const LayoutRect&); |
| |
| void addVisualEffectOverflow(); |
| LayoutBoxExtent computeVisualEffectOverflowExtent() const; |
| void addOverflowFromChild(RenderBox* child) { addOverflowFromChild(child, child->locationOffset()); } |
| void addOverflowFromChild(RenderBox* child, const LayoutSize& delta); |
| void clearLayoutOverflow(); |
| void clearAllOverflows() { m_overflow.clear(); } |
| |
| void updateLayerTransformAfterLayout(); |
| |
| // This transform has the transform-origin baked in. |
| TransformationMatrix* transform() const { return m_transform.get(); } |
| bool has3DTransform() const { return m_transform && !m_transform->isAffine(); } |
| |
| LayoutUnit contentWidth() const { return clientWidth() - paddingLeft() - paddingRight(); } |
| LayoutUnit contentHeight() const { return clientHeight() - paddingTop() - paddingBottom(); } |
| LayoutUnit contentLogicalWidth() const { return contentWidth(); } |
| LayoutUnit contentLogicalHeight() const { return contentHeight(); } |
| |
| // IE extensions. Used to calculate offsetWidth/Height. Overridden by inlines (RenderFlow) |
| // to return the remaining width on a given line (and the height of a single line). |
| virtual LayoutUnit offsetWidth() const override { return width(); } |
| virtual LayoutUnit offsetHeight() const override { return height(); } |
| |
| virtual int pixelSnappedOffsetWidth() const override final; |
| virtual int pixelSnappedOffsetHeight() const override final; |
| |
| // More IE extensions. clientWidth and clientHeight represent the interior of an object |
| // excluding border and scrollbar. clientLeft/Top are just the borderLeftWidth and borderTopWidth. |
| LayoutUnit clientLeft() const { return borderLeft(); } |
| LayoutUnit clientTop() const { return borderTop(); } |
| LayoutUnit clientWidth() const; |
| LayoutUnit clientHeight() const; |
| LayoutUnit clientLogicalWidth() const { return clientWidth(); } |
| LayoutUnit clientLogicalHeight() const { return clientHeight(); } |
| LayoutUnit clientLogicalBottom() const { return borderBefore() + clientLogicalHeight(); } |
| LayoutRect clientBoxRect() const { return LayoutRect(clientLeft(), clientTop(), clientWidth(), clientHeight()); } |
| |
| int pixelSnappedClientWidth() const; |
| int pixelSnappedClientHeight() const; |
| |
| virtual LayoutUnit marginTop() const override { return m_marginBox.top(); } |
| virtual LayoutUnit marginBottom() const override { return m_marginBox.bottom(); } |
| virtual LayoutUnit marginLeft() const override { return m_marginBox.left(); } |
| virtual LayoutUnit marginRight() const override { return m_marginBox.right(); } |
| void setMarginTop(LayoutUnit margin) { m_marginBox.setTop(margin); } |
| void setMarginBottom(LayoutUnit margin) { m_marginBox.setBottom(margin); } |
| void setMarginLeft(LayoutUnit margin) { m_marginBox.setLeft(margin); } |
| void setMarginRight(LayoutUnit margin) { m_marginBox.setRight(margin); } |
| |
| LayoutUnit marginLogicalLeft() const { return m_marginBox.logicalLeft(); } |
| LayoutUnit marginLogicalRight() const { return m_marginBox.logicalRight(); } |
| |
| virtual LayoutUnit marginBefore(const RenderStyle* overrideStyle = 0) const override final { return m_marginBox.before(); } |
| virtual LayoutUnit marginAfter(const RenderStyle* overrideStyle = 0) const override final { return m_marginBox.after(); } |
| virtual LayoutUnit marginStart(const RenderStyle* overrideStyle = 0) const override final |
| { |
| const RenderStyle* styleToUse = overrideStyle ? overrideStyle : style(); |
| return m_marginBox.start(styleToUse->direction()); |
| } |
| virtual LayoutUnit marginEnd(const RenderStyle* overrideStyle = 0) const override final |
| { |
| const RenderStyle* styleToUse = overrideStyle ? overrideStyle : style(); |
| return m_marginBox.end(styleToUse->direction()); |
| } |
| void setMarginBefore(LayoutUnit value, const RenderStyle* overrideStyle = 0) { m_marginBox.setBefore(value); } |
| void setMarginAfter(LayoutUnit value, const RenderStyle* overrideStyle = 0) { m_marginBox.setAfter(value); } |
| void setMarginStart(LayoutUnit value, const RenderStyle* overrideStyle = 0) |
| { |
| const RenderStyle* styleToUse = overrideStyle ? overrideStyle : style(); |
| m_marginBox.setStart(styleToUse->direction(), value); |
| } |
| void setMarginEnd(LayoutUnit value, const RenderStyle* overrideStyle = 0) |
| { |
| const RenderStyle* styleToUse = overrideStyle ? overrideStyle : style(); |
| m_marginBox.setEnd(styleToUse->direction(), value); |
| } |
| |
| virtual void absoluteQuads(Vector<FloatQuad>&) const override; |
| |
| bool hitTestLayer(RenderLayer* rootLayer, RenderLayer* containerLayer, |
| const HitTestRequest& request, HitTestResult& result, |
| const LayoutRect& hitTestRect, const HitTestLocation& hitTestLocation, |
| const HitTestingTransformState* transformState = 0, double* zOffset = 0); |
| |
| void paintLayer(GraphicsContext*, const LayerPaintingInfo&); |
| |
| virtual void layout() override; |
| virtual void paint(PaintInfo&, const LayoutPoint&, Vector<RenderBox*>& layers) override; |
| virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset) override; |
| |
| virtual LayoutUnit minPreferredLogicalWidth() const override; |
| virtual LayoutUnit maxPreferredLogicalWidth() const override; |
| |
| void setMinPreferredLogicalWidth(LayoutUnit); |
| void setMaxPreferredLogicalWidth(LayoutUnit); |
| |
| // FIXME: We should rename these back to overrideLogicalHeight/Width and have them store |
| // the border-box height/width like the regular height/width accessors on RenderBox. |
| // Right now, these are different than contentHeight/contentWidth because they still |
| // include the scrollbar height/width. |
| LayoutUnit overrideLogicalContentWidth() const; |
| LayoutUnit overrideLogicalContentHeight() const; |
| bool hasOverrideHeight() const; |
| bool hasOverrideWidth() const; |
| void setOverrideLogicalContentHeight(LayoutUnit); |
| void setOverrideLogicalContentWidth(LayoutUnit); |
| void clearOverrideSize(); |
| void clearOverrideLogicalContentHeight(); |
| void clearOverrideLogicalContentWidth(); |
| |
| virtual LayoutSize offsetFromContainer(const RenderObject*, const LayoutPoint&, bool* offsetDependsOnPoint = 0) const override; |
| |
| LayoutUnit adjustBorderBoxLogicalWidthForBoxSizing(LayoutUnit width) const; |
| LayoutUnit adjustBorderBoxLogicalHeightForBoxSizing(LayoutUnit height) const; |
| LayoutUnit adjustContentBoxLogicalWidthForBoxSizing(LayoutUnit width) const; |
| LayoutUnit adjustContentBoxLogicalHeightForBoxSizing(LayoutUnit height) const; |
| |
| struct ComputedMarginValues { |
| ComputedMarginValues() { } |
| |
| LayoutUnit m_before; |
| LayoutUnit m_after; |
| LayoutUnit m_start; |
| LayoutUnit m_end; |
| }; |
| struct LogicalExtentComputedValues { |
| LogicalExtentComputedValues() { } |
| |
| LayoutUnit m_extent; |
| LayoutUnit m_position; |
| ComputedMarginValues m_margins; |
| }; |
| // Resolve auto margins in the chosen direction of the containing block so that objects can be pushed to the start, middle or end |
| // of the containing block. |
| void computeMarginsForDirection(MarginDirection forDirection, const RenderBlock* containingBlock, LayoutUnit containerWidth, LayoutUnit childWidth, LayoutUnit& marginStart, LayoutUnit& marginEnd, Length marginStartLength, Length marginStartEnd) const; |
| |
| // Used to resolve margins in the containing block's block-flow direction. |
| void computeAndSetBlockDirectionMargins(const RenderBlock* containingBlock); |
| |
| void positionLineBox(InlineBox*); |
| |
| virtual InlineBox* createInlineBox(); |
| void dirtyLineBoxes(bool fullLayout); |
| |
| // For inline replaced elements, this function returns the inline box that owns us. Enables |
| // the replaced RenderObject to quickly determine what line it is contained on and to easily |
| // iterate over structures on the line. |
| InlineBox* inlineBoxWrapper() const { return m_rareData ? m_rareData->m_inlineBoxWrapper : 0; } |
| void setInlineBoxWrapper(InlineBox*); |
| void deleteLineBoxWrapper(); |
| |
| LayoutUnit containingBlockLogicalHeightForContent(AvailableLogicalHeightType) const; |
| |
| virtual void updateLogicalWidth(); |
| virtual void updateLogicalHeight(); |
| virtual void computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit logicalTop, LogicalExtentComputedValues&) const; |
| |
| void computeLogicalWidth(LogicalExtentComputedValues&) const; |
| |
| virtual LayoutSize intrinsicSize() const { return LayoutSize(); } |
| LayoutUnit intrinsicLogicalWidth() const { return intrinsicSize().width(); } |
| LayoutUnit intrinsicLogicalHeight() const { return intrinsicSize().height(); } |
| virtual LayoutUnit intrinsicContentLogicalHeight() const { return m_intrinsicContentLogicalHeight; } |
| |
| // 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(const Length& logicalWidth) const; |
| |
| LayoutUnit computeLogicalWidthUsing(SizeType, const Length& logicalWidth, LayoutUnit availableLogicalWidth, const RenderBlock* containingBlock) const; |
| LayoutUnit computeLogicalHeightUsing(const Length& height, LayoutUnit intrinsicContentHeight) const; |
| LayoutUnit computeContentLogicalHeight(const Length& height, LayoutUnit intrinsicContentHeight) const; |
| LayoutUnit computeContentLogicalHeightUsing(const Length& height, LayoutUnit intrinsicContentHeight) const; |
| LayoutUnit computeReplacedLogicalWidthUsing(const Length& width) const; |
| LayoutUnit computeReplacedLogicalWidthRespectingMinMaxWidth(LayoutUnit logicalWidth, ShouldComputePreferred = ComputeActual) const; |
| LayoutUnit computeReplacedLogicalHeightUsing(const Length& height) const; |
| LayoutUnit computeReplacedLogicalHeightRespectingMinMaxHeight(LayoutUnit logicalHeight) const; |
| |
| virtual LayoutUnit computeReplacedLogicalWidth(ShouldComputePreferred = ComputeActual) const; |
| virtual LayoutUnit computeReplacedLogicalHeight() const; |
| |
| static bool percentageLogicalHeightIsResolvableFromBlock(const RenderBlock* containingBlock, bool outOfFlowPositioned); |
| LayoutUnit computePercentageLogicalHeight(const Length& height) const; |
| |
| // Block flows subclass availableWidth/Height to handle multi column layout (shrinking the width/height available to children when laying out.) |
| virtual 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 availableLogicalWidth(); } |
| LayoutUnit availableHeight() const { return availableLogicalHeight(IncludeMarginBorderPadding); } |
| |
| virtual LayoutRect localCaretRect(InlineBox*, int caretOffset, LayoutUnit* extraWidthToEndOfLine = 0) override; |
| |
| virtual LayoutRect overflowClipRect(const LayoutPoint& location); |
| LayoutRect clipRect(const LayoutPoint& location); |
| bool pushContentsClip(PaintInfo&, const LayoutPoint& accumulatedOffset, ContentsClipBehavior); |
| void popContentsClip(PaintInfo&, const LayoutPoint& accumulatedOffset); |
| |
| virtual void paintBoxDecorationBackground(PaintInfo&, const LayoutPoint&); |
| |
| // 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; |
| } |
| |
| virtual PositionWithAffinity positionForPoint(const LayoutPoint&) override; |
| |
| void removeFloatingOrPositionedChildFromBlockLists(); |
| |
| RenderLayer* enclosingFloatPaintingLayer() const; |
| |
| virtual int firstLineBoxBaseline(FontBaselineOrAuto baselineType) const { return -1; } |
| virtual int inlineBlockBaseline(LineDirectionMode) const { return -1; } // Returns -1 if we should skip this box when computing the baseline of an inline-block. |
| |
| bool isFlexItem() const { return !isInline() && !isFloatingOrOutOfFlowPositioned() && parent() && parent()->isFlexibleBox(); } |
| |
| virtual LayoutUnit lineHeight(bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const override; |
| virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const override; |
| |
| virtual LayoutUnit offsetLeft() const override; |
| virtual LayoutUnit offsetTop() const override; |
| |
| LayoutRect layoutOverflowRectForPropagation() 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 { } |
| |
| virtual bool hasRelativeLogicalHeight() const; |
| |
| bool hasSameDirectionAs(const RenderBox* object) const { return style()->direction() == object->style()->direction(); } |
| |
| void setCustomPainting(PassRefPtr<DisplayList> customPainting) { m_customPainting = customPainting; } |
| |
| protected: |
| virtual void willBeDestroyed() override; |
| |
| virtual void styleWillChange(StyleDifference, const RenderStyle& newStyle) override; |
| virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override; |
| |
| void paintBackground(const PaintInfo&, const LayoutRect&, const Color& backgroundColor, BackgroundBleedAvoidance = BackgroundBleedNone); |
| void paintFillLayer(const PaintInfo&, const Color&, const FillLayer&, const LayoutRect&, BackgroundBleedAvoidance, RenderObject* backgroundObject, bool skipBaseColor = false); |
| void paintFillLayers(const PaintInfo&, const Color&, const FillLayer&, const LayoutRect&, BackgroundBleedAvoidance = BackgroundBleedNone, RenderObject* backgroundObject = 0); |
| void paintBoxDecorationBackgroundWithRect(PaintInfo&, const LayoutPoint&, const LayoutRect&); |
| |
| // Information extracted from RenderStyle for box painting. |
| // These are always needed during box painting and recomputing them takes time. |
| struct BoxDecorationData { |
| BoxDecorationData(const RenderStyle&); |
| |
| Color backgroundColor; |
| bool hasBackground; |
| bool hasBorder; |
| }; |
| |
| BackgroundBleedAvoidance determineBackgroundBleedAvoidance(GraphicsContext*, const BoxDecorationData&) const; |
| bool backgroundHasOpaqueTopLayer() const; |
| |
| void computePositionedLogicalWidth(LogicalExtentComputedValues&) const; |
| |
| LayoutUnit computeIntrinsicLogicalWidthUsing(const Length& logicalWidthLength, LayoutUnit availableLogicalWidth, LayoutUnit borderAndPadding) const; |
| LayoutUnit computeIntrinsicLogicalContentHeightUsing(const Length& logicalHeightLength, LayoutUnit intrinsicContentHeight, LayoutUnit borderAndPadding) const; |
| |
| virtual bool shouldComputeSizeAsReplaced() const { return isReplaced() && !isInlineBlock(); } |
| |
| virtual void mapLocalToContainer(const RenderBox* paintInvalidationContainer, TransformState&, MapCoordinatesFlags = ApplyContainerFlip) const override; |
| |
| void paintRootBoxFillLayers(const PaintInfo&); |
| |
| void updateIntrinsicContentLogicalHeight(LayoutUnit intrinsicContentLogicalHeight) const { m_intrinsicContentLogicalHeight = intrinsicContentLogicalHeight; } |
| |
| void paintCustomPainting(PaintInfo& paintInfo, const LayoutPoint& paintOffset); |
| |
| private: |
| void updateTransformationMatrix(); |
| void updateTransform(const RenderStyle* oldStyle); |
| void updateFromStyle(); |
| void updateFilters(); |
| |
| PassRefPtr<HitTestingTransformState> createLocalTransformState( |
| RenderLayer* rootLayer, RenderLayer* containerLayer, |
| const LayoutRect& hitTestRect, const HitTestLocation& hitTestLocation, |
| const HitTestingTransformState* containerTransformState) const; |
| bool hitTestNonLayerDescendants(const HitTestRequest& request, HitTestResult& result, |
| const LayoutRect& layerBounds, const HitTestLocation& hitTestLocation); |
| |
| void paintLayerContents(GraphicsContext*, const LayerPaintingInfo&); |
| |
| void shrinkToFitWidth(const LayoutUnit availableSpace, const LayoutUnit logicalLeftValue, const LayoutUnit bordersPlusPadding, LogicalExtentComputedValues&) const; |
| |
| bool skipContainingBlockForPercentHeightCalculation(const RenderBox* containingBlock) const; |
| |
| LayoutUnit containingBlockLogicalWidthForPositioned(const RenderBoxModelObject* containingBlock) const; |
| LayoutUnit containingBlockLogicalHeightForPositioned(const RenderBoxModelObject* containingBlock) const; |
| |
| void computePositionedLogicalHeight(LogicalExtentComputedValues&) const; |
| void computePositionedLogicalWidthUsing(Length logicalWidth, const RenderBoxModelObject* containerBlock, TextDirection containerDirection, |
| LayoutUnit containerLogicalWidth, LayoutUnit bordersPlusPadding, |
| const Length& logicalLeft, const Length& logicalRight, const Length& marginLogicalLeft, |
| const Length& marginLogicalRight, LogicalExtentComputedValues&) const; |
| void computePositionedLogicalHeightUsing(Length logicalHeightLength, const RenderBoxModelObject* containerBlock, |
| LayoutUnit containerLogicalHeight, LayoutUnit bordersPlusPadding, LayoutUnit logicalHeight, |
| const Length& logicalTop, const Length& logicalBottom, const Length& marginLogicalTop, |
| const Length& marginLogicalBottom, LogicalExtentComputedValues&) const; |
| |
| void computePositionedLogicalHeightReplaced(LogicalExtentComputedValues&) const; |
| void computePositionedLogicalWidthReplaced(LogicalExtentComputedValues&) const; |
| |
| LayoutUnit fillAvailableMeasure(LayoutUnit availableLogicalWidth) const; |
| |
| virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const; |
| |
| // 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() { clearPreferredLogicalWidthsDirty(); } |
| |
| RenderBoxRareData& ensureRareData() |
| { |
| if (!m_rareData) |
| m_rareData = adoptPtr(new RenderBoxRareData()); |
| return *m_rareData.get(); |
| } |
| |
| bool logicalHeightComputesAsNone(SizeType) const; |
| |
| bool isBox() const = delete; // This will catch anyone doing an unnecessary check. |
| |
| // 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; |
| |
| // Our intrinsic height, used for min-height: min-content etc. Maintained by |
| // updateLogicalHeight. This is logicalHeight() before it is clamped to |
| // min/max. |
| mutable LayoutUnit m_intrinsicContentLogicalHeight; |
| |
| 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; |
| |
| // Our overflow information. |
| OwnPtr<RenderOverflow> m_overflow; |
| |
| // TODO(ojan): Move these two into RenderBoxRareData. |
| OwnPtr<FilterEffectRenderer> m_filterRenderer; |
| OwnPtr<TransformationMatrix> m_transform; |
| |
| private: |
| RefPtr<DisplayList> m_customPainting; |
| OwnPtr<RenderLayer> m_layer; |
| OwnPtr<RenderBoxRareData> m_rareData; |
| }; |
| |
| DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderBox, isBox()); |
| |
| inline RenderBox* RenderBox::previousSiblingBox() const |
| { |
| return toRenderBox(previousSibling()); |
| } |
| |
| inline RenderBox* RenderBox::nextSiblingBox() const |
| { |
| return toRenderBox(nextSibling()); |
| } |
| |
| inline RenderBox* RenderBox::parentBox() const |
| { |
| return toRenderBox(parent()); |
| } |
| |
| inline RenderBox* RenderBox::firstChildBox() const |
| { |
| return toRenderBox(slowFirstChild()); |
| } |
| |
| inline RenderBox* RenderBox::lastChildBox() const |
| { |
| return toRenderBox(slowLastChild()); |
| } |
| |
| inline void RenderBox::setInlineBoxWrapper(InlineBox* boxWrapper) |
| { |
| if (boxWrapper) { |
| ASSERT(!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(inlineBoxWrapper() != 0)) |
| deleteLineBoxWrapper(); |
| } |
| |
| ensureRareData().m_inlineBoxWrapper = boxWrapper; |
| } |
| |
| } // namespace blink |
| |
| #endif // SKY_ENGINE_CORE_RENDERING_RENDERBOX_H_ |