| /* |
| * 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 RenderBox_h |
| #define RenderBox_h |
| |
| #include "RenderBoxModelObject.h" |
| #include "RenderOverflow.h" |
| #include "ScrollTypes.h" |
| |
| namespace WebCore { |
| |
| class RenderBoxRegionInfo; |
| class RenderRegion; |
| struct PaintInfo; |
| |
| enum SizeType { MainOrPreferredSize, MinSize, MaxSize }; |
| |
| enum OverlayScrollbarSizeRelevancy { IgnoreOverlayScrollbarSize, IncludeOverlayScrollbarSize }; |
| |
| class RenderBox : public RenderBoxModelObject { |
| public: |
| RenderBox(Node*); |
| virtual ~RenderBox(); |
| |
| virtual bool requiresLayer() const OVERRIDE { return isRoot() || isOutOfFlowPositioned() || isRelPositioned() || isTransparent() || hasOverflowClip() || hasTransform() || hasHiddenBackface() || hasMask() || hasReflection() || hasFilter() || style()->specifiesColumns(); } |
| |
| // 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 topLeftLocation().y(); } |
| LayoutUnit left() const { return topLeftLocation().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 style()->isHorizontalWritingMode() ? x() : y(); } |
| LayoutUnit logicalRight() const { return logicalLeft() + logicalWidth(); } |
| LayoutUnit logicalTop() const { return style()->isHorizontalWritingMode() ? y() : x(); } |
| LayoutUnit logicalBottom() const { return logicalTop() + logicalHeight(); } |
| LayoutUnit logicalWidth() const { return style()->isHorizontalWritingMode() ? width() : height(); } |
| LayoutUnit logicalHeight() const { return style()->isHorizontalWritingMode() ? height() : width(); } |
| |
| int pixelSnappedLogicalHeight() const { return style()->isHorizontalWritingMode() ? pixelSnappedHeight() : pixelSnappedWidth(); } |
| int pixelSnappedLogicalWidth() const { return style()->isHorizontalWritingMode() ? pixelSnappedWidth() : pixelSnappedHeight(); } |
| |
| void setLogicalLeft(LayoutUnit left) |
| { |
| if (style()->isHorizontalWritingMode()) |
| setX(left); |
| else |
| setY(left); |
| } |
| void setLogicalTop(LayoutUnit top) |
| { |
| if (style()->isHorizontalWritingMode()) |
| setY(top); |
| else |
| setX(top); |
| } |
| void setLogicalLocation(const LayoutPoint& location) |
| { |
| if (style()->isHorizontalWritingMode()) |
| setLocation(location); |
| else |
| setLocation(location.transposedPoint()); |
| } |
| void setLogicalWidth(LayoutUnit size) |
| { |
| if (style()->isHorizontalWritingMode()) |
| setWidth(size); |
| else |
| setHeight(size); |
| } |
| void setLogicalHeight(LayoutUnit size) |
| { |
| if (style()->isHorizontalWritingMode()) |
| setHeight(size); |
| else |
| setWidth(size); |
| } |
| void setLogicalSize(const LayoutSize& size) |
| { |
| if (style()->isHorizontalWritingMode()) |
| setSize(size); |
| else |
| setSize(size.transposedSize()); |
| } |
| |
| 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()); } |
| IntRect pixelSnappedBorderBoxRect() const { return IntRect(IntPoint(), m_frameRect.pixelSnappedSize()); } |
| virtual IntRect borderBoundingBox() const { 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; |
| |
| // 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()); } |
| |
| // Bounds of the outline box in absolute coords. Respects transforms |
| virtual LayoutRect outlineBoundsForRepaint(RenderBoxModelObject* /*repaintContainer*/, LayoutPoint* cachedOffsetToRepaintContainer) const; |
| virtual void addFocusRingRects(Vector<IntRect>&, const LayoutPoint&); |
| |
| // 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() : clientBoxRect(); } |
| IntRect pixelSnappedLayoutOverflowRect() const { return pixelSnappedIntRect(layoutOverflowRect()); } |
| LayoutSize maxLayoutOverflow() const { return LayoutSize(layoutOverflowRect().maxX(), layoutOverflowRect().maxY()); } |
| LayoutUnit logicalLeftLayoutOverflow() const { return style()->isHorizontalWritingMode() ? layoutOverflowRect().x() : layoutOverflowRect().y(); } |
| LayoutUnit logicalRightLayoutOverflow() const { return style()->isHorizontalWritingMode() ? layoutOverflowRect().maxX() : layoutOverflowRect().maxY(); } |
| |
| virtual LayoutRect visualOverflowRect() const { return m_overflow ? m_overflow->visualOverflowRect() : borderBoxRect(); } |
| LayoutUnit logicalLeftVisualOverflow() const { return style()->isHorizontalWritingMode() ? visualOverflowRect().x() : visualOverflowRect().y(); } |
| LayoutUnit logicalRightVisualOverflow() const { return style()->isHorizontalWritingMode() ? visualOverflowRect().maxX() : visualOverflowRect().maxY(); } |
| |
| void addLayoutOverflow(const LayoutRect&); |
| void addVisualOverflow(const LayoutRect&); |
| |
| void addVisualEffectOverflow(); |
| void addOverflowFromChild(RenderBox* child) { addOverflowFromChild(child, child->locationOffset()); } |
| void addOverflowFromChild(RenderBox* child, const LayoutSize& delta); |
| void clearLayoutOverflow(); |
| |
| void updateLayerTransform(); |
| |
| LayoutUnit contentWidth() const { return clientWidth() - paddingLeft() - paddingRight(); } |
| LayoutUnit contentHeight() const { return clientHeight() - paddingTop() - paddingBottom(); } |
| LayoutUnit contentLogicalWidth() const { return style()->isHorizontalWritingMode() ? contentWidth() : contentHeight(); } |
| LayoutUnit contentLogicalHeight() const { return style()->isHorizontalWritingMode() ? contentHeight() : contentWidth(); } |
| |
| // 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 { return width(); } |
| virtual LayoutUnit offsetHeight() const { return height(); } |
| |
| // FIXME: The implementation for these functions will change once we move to subpixel layout. See bug 60318. |
| virtual int pixelSnappedOffsetWidth() const { return pixelSnappedWidth(); } |
| virtual int pixelSnappedOffsetHeight() const { return pixelSnappedHeight(); } |
| |
| // 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 style()->isHorizontalWritingMode() ? pixelSnappedClientWidth() : pixelSnappedClientHeight(); } |
| LayoutUnit clientLogicalHeight() const { return style()->isHorizontalWritingMode() ? pixelSnappedClientHeight() : pixelSnappedClientWidth(); } |
| LayoutUnit clientLogicalBottom() const { return borderBefore() + clientLogicalHeight(); } |
| LayoutRect clientBoxRect() const { return LayoutRect(clientLeft(), clientTop(), clientWidth(), clientHeight()); } |
| |
| int pixelSnappedClientWidth() const; |
| int pixelSnappedClientHeight() const; |
| |
| // scrollWidth/scrollHeight will be the same as clientWidth/clientHeight unless the |
| // object has overflow:hidden/scroll/auto specified and also has overflow. |
| // scrollLeft/Top return the current scroll position. These methods are virtual so that objects like |
| // textareas can scroll shadow content (but pretend that they are the objects that are |
| // scrolling). |
| virtual int scrollLeft() const; |
| virtual int scrollTop() const; |
| virtual int scrollWidth() const; |
| virtual int scrollHeight() const; |
| virtual void setScrollLeft(int); |
| virtual void setScrollTop(int); |
| |
| 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); } |
| |
| virtual LayoutUnit marginLogicalLeft() const { return m_marginBox.logicalLeft(style()); } |
| virtual LayoutUnit marginLogicalRight() const { return m_marginBox.logicalRight(style()); } |
| |
| virtual LayoutUnit marginBefore(const RenderStyle* overrideStyle = 0) const OVERRIDE { return m_marginBox.before(overrideStyle ? overrideStyle : style()); } |
| virtual LayoutUnit marginAfter(const RenderStyle* overrideStyle = 0) const OVERRIDE { return m_marginBox.after(overrideStyle ? overrideStyle : style()); } |
| virtual LayoutUnit marginStart(const RenderStyle* overrideStyle = 0) const OVERRIDE { return m_marginBox.start(overrideStyle ? overrideStyle : style()); } |
| virtual LayoutUnit marginEnd(const RenderStyle* overrideStyle = 0) const OVERRIDE { return m_marginBox.end(overrideStyle ? overrideStyle : style()); } |
| void setMarginBefore(LayoutUnit value, const RenderStyle* overrideStyle = 0) { m_marginBox.setBefore(overrideStyle ? overrideStyle : style(), value); } |
| void setMarginAfter(LayoutUnit value, const RenderStyle* overrideStyle = 0) { m_marginBox.setAfter(overrideStyle ? overrideStyle : style(), value); } |
| void setMarginStart(LayoutUnit value, const RenderStyle* overrideStyle = 0) { m_marginBox.setStart(overrideStyle ? overrideStyle : style(), value); } |
| void setMarginEnd(LayoutUnit value, const RenderStyle* overrideStyle = 0) { m_marginBox.setEnd(overrideStyle ? overrideStyle : style(), value); } |
| |
| // The following five functions are used to implement collapsing margins. |
| // All objects know their maximal positive and negative margins. The |
| // formula for computing a collapsed margin is |maxPosMargin| - |maxNegmargin|. |
| // For a non-collapsing box, such as a leaf element, this formula will simply return |
| // the margin of the element. Blocks override the maxMarginBefore and maxMarginAfter |
| // methods. |
| enum MarginSign { PositiveMargin, NegativeMargin }; |
| virtual bool isSelfCollapsingBlock() const { return false; } |
| virtual LayoutUnit collapsedMarginBefore() const { return marginBefore(); } |
| virtual LayoutUnit collapsedMarginAfter() const { return marginAfter(); } |
| |
| virtual void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedOffset) const; |
| virtual void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const; |
| |
| LayoutRect reflectionBox() const; |
| int reflectionOffset() const; |
| // Given a rect in the object's coordinate space, returns the corresponding rect in the reflection. |
| LayoutRect reflectedRect(const LayoutRect&) const; |
| |
| virtual void layout(); |
| virtual void paint(PaintInfo&, const LayoutPoint&); |
| virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestPoint& pointInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) OVERRIDE; |
| |
| virtual LayoutUnit minPreferredLogicalWidth() const; |
| virtual LayoutUnit maxPreferredLogicalWidth() const; |
| |
| LayoutUnit overrideLogicalContentWidth() const; |
| LayoutUnit overrideLogicalContentHeight() const; |
| bool hasOverrideHeight() const; |
| bool hasOverrideWidth() const; |
| void setOverrideLogicalContentHeight(LayoutUnit); |
| void setOverrideLogicalContentWidth(LayoutUnit); |
| void clearOverrideSize(); |
| |
| virtual LayoutSize offsetFromContainer(RenderObject*, const LayoutPoint&, bool* offsetDependsOnPoint = 0) const; |
| |
| LayoutUnit computeBorderBoxLogicalWidth(LayoutUnit width) const; |
| LayoutUnit computeBorderBoxLogicalHeight(LayoutUnit height) const; |
| LayoutUnit computeContentBoxLogicalWidth(LayoutUnit width) const; |
| LayoutUnit computeContentBoxLogicalHeight(LayoutUnit height) const; |
| |
| virtual void borderFitAdjust(LayoutRect&) const { } // Shrink the box in which the border paints if border-fit is set. |
| |
| // Resolve auto margins in the inline direction of the containing block so that objects can be pushed to the start, middle or end |
| // of the containing block. |
| void computeInlineDirectionMargins(RenderBlock* containingBlock, LayoutUnit containerWidth, LayoutUnit childWidth); |
| |
| // Used to resolve margins in the containing block's block-flow direction. |
| void computeBlockDirectionMargins(const RenderBlock* containingBlock); |
| |
| enum RenderBoxRegionInfoFlags { CacheRenderBoxRegionInfo, DoNotCacheRenderBoxRegionInfo }; |
| LayoutRect borderBoxRectInRegion(RenderRegion*, LayoutUnit offsetFromLogicalTopOfFirstPage = 0, RenderBoxRegionInfoFlags = CacheRenderBoxRegionInfo) const; |
| void clearRenderBoxRegionInfo(); |
| |
| 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_inlineBoxWrapper; } |
| void setInlineBoxWrapper(InlineBox* boxWrapper) { m_inlineBoxWrapper = boxWrapper; } |
| void deleteLineBoxWrapper(); |
| |
| virtual LayoutRect clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer) const; |
| virtual void computeRectForRepaint(RenderBoxModelObject* repaintContainer, LayoutRect&, bool fixed = false) const; |
| |
| virtual void repaintDuringLayoutIfMoved(const LayoutRect&); |
| |
| virtual LayoutUnit containingBlockLogicalWidthForContent() const; |
| LayoutUnit containingBlockLogicalWidthForContentInRegion(RenderRegion*, LayoutUnit offsetFromLogicalTopOfFirstPage) const; |
| LayoutUnit containingBlockAvailableLineWidthInRegion(RenderRegion*, LayoutUnit offsetFromLogicalTopOfFirstPage) const; |
| LayoutUnit perpendicularContainingBlockLogicalHeight() const; |
| |
| virtual void computeLogicalWidth(); |
| virtual void computeLogicalHeight(); |
| |
| RenderBoxRegionInfo* renderBoxRegionInfo(RenderRegion*, LayoutUnit offsetFromLogicalTopOfFirstPage, RenderBoxRegionInfoFlags = CacheRenderBoxRegionInfo) const; |
| void computeLogicalWidthInRegion(RenderRegion* = 0, LayoutUnit offsetFromLogicalTopOfFirstPage = ZERO_LAYOUT_UNIT); |
| |
| bool stretchesToViewport() const |
| { |
| return document()->inQuirksMode() && style()->logicalHeight().isAuto() && !isFloatingOrOutOfFlowPositioned() && (isRoot() || isBody()) && !document()->shouldDisplaySeamlesslyWithParent(); |
| } |
| |
| virtual IntSize intrinsicSize() const { return IntSize(); } |
| 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; |
| virtual bool stretchesToMinIntrinsicLogicalWidth() const { return false; } |
| |
| LayoutUnit shrinkLogicalWidthToAvoidFloats(LayoutUnit childMarginStart, LayoutUnit childMarginEnd, const RenderBlock* cb, RenderRegion*, LayoutUnit offsetFromLogicalTopOfFirstPage); |
| |
| LayoutUnit computeLogicalWidthInRegionUsing(SizeType, LayoutUnit availableLogicalWidth, const RenderBlock* containingBlock, RenderRegion*, LayoutUnit offsetFromLogicalTopOfFirstPage); |
| LayoutUnit computeLogicalHeightUsing(SizeType, const Length& height); |
| LayoutUnit computeContentLogicalHeightUsing(SizeType, const Length& height); |
| LayoutUnit computeReplacedLogicalWidthUsing(SizeType, Length width) const; |
| LayoutUnit computeReplacedLogicalWidthRespectingMinMaxWidth(LayoutUnit logicalWidth, bool includeMaxWidth = true) const; |
| LayoutUnit computeReplacedLogicalHeightUsing(SizeType, Length height) const; |
| LayoutUnit computeReplacedLogicalHeightRespectingMinMaxHeight(LayoutUnit logicalHeight) const; |
| |
| virtual LayoutUnit computeReplacedLogicalWidth(bool includeMaxWidth = true) const; |
| virtual LayoutUnit computeReplacedLogicalHeight() const; |
| |
| LayoutUnit computePercentageLogicalHeight(const Length& height); |
| |
| // 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() const; |
| LayoutUnit availableLogicalHeightUsing(const Length&) 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(); } |
| LayoutUnit availableHeight() const { return style()->isHorizontalWritingMode() ? availableLogicalHeight() : availableLogicalWidth(); } |
| |
| virtual int verticalScrollbarWidth() const; |
| int horizontalScrollbarHeight() const; |
| int scrollbarLogicalHeight() const { return style()->isHorizontalWritingMode() ? horizontalScrollbarHeight() : verticalScrollbarWidth(); } |
| virtual bool scroll(ScrollDirection, ScrollGranularity, float multiplier = 1, Node** stopNode = 0); |
| virtual bool logicalScroll(ScrollLogicalDirection, ScrollGranularity, float multiplier = 1, Node** stopNode = 0); |
| bool canBeScrolledAndHasScrollableArea() const; |
| virtual bool canBeProgramaticallyScrolled() const; |
| virtual void autoscroll(); |
| virtual void stopAutoscroll() { } |
| virtual void panScroll(const IntPoint&); |
| bool hasAutoVerticalScrollbar() const { return hasOverflowClip() && (style()->overflowY() == OAUTO || style()->overflowY() == OOVERLAY); } |
| bool hasAutoHorizontalScrollbar() const { return hasOverflowClip() && (style()->overflowX() == OAUTO || style()->overflowX() == OOVERLAY); } |
| bool scrollsOverflow() const { return scrollsOverflowX() || scrollsOverflowY(); } |
| bool scrollsOverflowX() const { return hasOverflowClip() && (style()->overflowX() == OSCROLL || hasAutoHorizontalScrollbar()); } |
| bool scrollsOverflowY() const { return hasOverflowClip() && (style()->overflowY() == OSCROLL || hasAutoVerticalScrollbar()); } |
| |
| bool hasUnsplittableScrollingOverflow() const; |
| bool isUnsplittableForPagination() const; |
| |
| virtual LayoutRect localCaretRect(InlineBox*, int caretOffset, LayoutUnit* extraWidthToEndOfLine = 0); |
| |
| virtual LayoutRect overflowClipRect(const LayoutPoint& location, RenderRegion*, OverlayScrollbarSizeRelevancy = IgnoreOverlayScrollbarSize); |
| LayoutRect clipRect(const LayoutPoint& location, RenderRegion*); |
| 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 imageChanged(WrappedImagePtr, const IntRect* = 0); |
| |
| // 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(); |
| computeLogicalWidth(); |
| // If we shrink to fit our width may have changed, so we still need full layout. |
| if (oldWidth != width()) |
| return false; |
| computeLogicalHeight(); |
| return true; |
| } |
| |
| LayoutRect maskClipRect(); |
| |
| virtual VisiblePosition positionForPoint(const LayoutPoint&); |
| |
| void removeFloatingOrPositionedChildFromBlockLists(); |
| |
| RenderLayer* enclosingFloatPaintingLayer() const; |
| |
| virtual LayoutUnit firstLineBoxBaseline() const { return -1; } |
| virtual LayoutUnit lastLineBoxBaseline() const { return -1; } |
| |
| 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(); } |
| |
| virtual LayoutUnit lineHeight(bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const; |
| virtual LayoutUnit baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const; |
| |
| virtual LayoutUnit offsetLeft() const OVERRIDE; |
| virtual 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; |
| LayoutPoint flipForWritingModeIncludingColumns(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; |
| |
| LayoutRect logicalVisualOverflowRectForPropagation(RenderStyle*) const; |
| LayoutRect visualOverflowRectForPropagation(RenderStyle*) const; |
| LayoutRect logicalLayoutOverflowRectForPropagation(RenderStyle*) const; |
| LayoutRect layoutOverflowRectForPropagation(RenderStyle*) const; |
| |
| RenderOverflow* hasRenderOverflow() const { return m_overflow.get(); } |
| bool hasVisualOverflow() const { return m_overflow && !borderBoxRect().contains(m_overflow->visualOverflowRect()); } |
| |
| virtual bool needsPreferredWidthsRecalculation() const; |
| virtual void computeIntrinsicRatioInformation(FloatSize& /* intrinsicSize */, double& /* intrinsicRatio */, bool& /* isPercentageIntrinsicSize */) const { } |
| |
| IntSize scrolledContentOffset() const; |
| LayoutSize cachedSizeForOverflowClip() const; |
| |
| virtual bool hasRelativeDimensions() const; |
| virtual bool hasRelativeLogicalHeight() const; |
| |
| bool hasHorizontalLayoutOverflow() const |
| { |
| if (RenderOverflow* overflow = hasRenderOverflow()) { |
| LayoutRect layoutOverflowRect = overflow->layoutOverflowRect(); |
| flipForWritingMode(layoutOverflowRect); |
| return layoutOverflowRect.x() < x() || layoutOverflowRect.maxX() > x() + logicalWidth(); |
| } |
| |
| return false; |
| } |
| |
| bool hasVerticalLayoutOverflow() const |
| { |
| if (RenderOverflow* overflow = hasRenderOverflow()) { |
| LayoutRect layoutOverflowRect = overflow->layoutOverflowRect(); |
| flipForWritingMode(layoutOverflowRect); |
| return layoutOverflowRect.y() < y() || layoutOverflowRect.maxY() > y() + logicalHeight(); |
| } |
| |
| return false; |
| } |
| |
| virtual RenderBox* createAnonymousBoxWithSameTypeAs(const RenderObject*) const |
| { |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| |
| protected: |
| virtual void willBeDestroyed(); |
| |
| virtual void styleWillChange(StyleDifference, const RenderStyle* newStyle); |
| virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle); |
| virtual void updateBoxModelInfoFromStyle(); |
| |
| virtual bool backgroundIsObscured() const { return false; } |
| void paintBackground(const PaintInfo&, const LayoutRect&, BackgroundBleedAvoidance = BackgroundBleedNone); |
| |
| void paintFillLayer(const PaintInfo&, const Color&, const FillLayer*, const LayoutRect&, BackgroundBleedAvoidance, CompositeOperator, RenderObject* backgroundObject); |
| void paintFillLayers(const PaintInfo&, const Color&, const FillLayer*, const LayoutRect&, BackgroundBleedAvoidance = BackgroundBleedNone, CompositeOperator = CompositeSourceOver, RenderObject* backgroundObject = 0); |
| |
| void paintMaskImages(const PaintInfo&, const LayoutRect&); |
| |
| BackgroundBleedAvoidance determineBackgroundBleedAvoidance(GraphicsContext*) const; |
| |
| #if PLATFORM(MAC) |
| void paintCustomHighlight(const LayoutPoint&, const AtomicString& type, bool behindText); |
| #endif |
| |
| void computePositionedLogicalWidth(RenderRegion* = 0, LayoutUnit offsetFromLogicalTopOfFirstPage = 0); |
| |
| virtual bool shouldComputeSizeAsReplaced() const { return isReplaced() && !isInlineBlockOrInlineTable(); } |
| |
| virtual void mapLocalToContainer(RenderBoxModelObject* repaintContainer, bool fixed, bool useTransforms, TransformState&, ApplyContainerFlipOrNot = ApplyContainerFlip, bool* wasFixed = 0) const; |
| virtual const RenderObject* pushMappingToContainer(const RenderBoxModelObject*, RenderGeometryMap&) const; |
| virtual void mapAbsoluteToLocalPoint(bool fixed, bool useTransforms, TransformState&) const; |
| |
| void paintRootBoxFillLayers(const PaintInfo&); |
| |
| RenderObject* splitAnonymousBoxesAroundChild(RenderObject* beforeChild); |
| |
| private: |
| bool fixedElementLaysOutRelativeToFrame(Frame*, FrameView*) const; |
| |
| bool includeVerticalScrollbarSize() const; |
| bool includeHorizontalScrollbarSize() const; |
| |
| // Returns true if we did a full repaint |
| bool repaintLayerRectsForImage(WrappedImagePtr image, const FillLayer* layers, bool drawingBackground); |
| |
| LayoutUnit containingBlockLogicalWidthForPositioned(const RenderBoxModelObject* containingBlock, RenderRegion* = 0, |
| LayoutUnit offsetFromLogicalTopOfFirstPage = 0, bool checkForPerpendicularWritingMode = true) const; |
| LayoutUnit containingBlockLogicalHeightForPositioned(const RenderBoxModelObject* containingBlock, bool checkForPerpendicularWritingMode = true) const; |
| |
| void computePositionedLogicalHeight(); |
| void computePositionedLogicalWidthUsing(SizeType, Length logicalWidth, const RenderBoxModelObject* containerBlock, TextDirection containerDirection, |
| LayoutUnit containerLogicalWidth, LayoutUnit bordersPlusPadding, |
| Length logicalLeft, Length logicalRight, Length marginLogicalLeft, Length marginLogicalRight, |
| LayoutUnit& logicalWidthValue, LayoutUnit& marginLogicalLeftValue, LayoutUnit& marginLogicalRightValue, LayoutUnit& logicalLeftPos); |
| void computePositionedLogicalHeightUsing(SizeType, Length logicalHeight, const RenderBoxModelObject* containerBlock, |
| LayoutUnit containerLogicalHeight, LayoutUnit bordersPlusPadding, |
| Length logicalTop, Length logicalBottom, Length marginLogicalTop, Length marginLogicalBottom, |
| LayoutUnit& logicalHeightValue, LayoutUnit& marginLogicalTopValue, LayoutUnit& marginLogicalBottomValue, LayoutUnit& logicalTopPos); |
| |
| void computePositionedLogicalHeightReplaced(); |
| void computePositionedLogicalWidthReplaced(); |
| |
| // 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() { setPreferredLogicalWidthsDirty(false); } |
| |
| 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. |
| InlineBox* m_inlineBoxWrapper; |
| |
| // Our overflow information. |
| OwnPtr<RenderOverflow> m_overflow; |
| |
| private: |
| // Used to store state between styleWillChange and styleDidChange |
| static bool s_hadOverflowClip; |
| }; |
| |
| inline RenderBox* toRenderBox(RenderObject* object) |
| { |
| ASSERT(!object || object->isBox()); |
| return static_cast<RenderBox*>(object); |
| } |
| |
| inline const RenderBox* toRenderBox(const RenderObject* object) |
| { |
| ASSERT(!object || object->isBox()); |
| return static_cast<const RenderBox*>(object); |
| } |
| |
| // This will catch anyone doing an unnecessary cast. |
| void toRenderBox(const RenderBox*); |
| |
| 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(firstChild()); |
| } |
| |
| inline RenderBox* RenderBox::lastChildBox() const |
| { |
| return toRenderBox(lastChild()); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // RenderBox_h |
