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b16599bc8f
This patch do following things: 1. Create nsDisplayTableBorderCollapse that draws all collapse border of table. 2. Don't use nsDisplayTableBorderBackground. 3. Let column and column group frame generate display items. 4. When traversing the table, also traverse the column and column group frames. 5. For each type of table frame (col group, col, row group, row and cell), draw their own background. MozReview-Commit-ID: 1s2VLv6G8xi
253 lines
9.6 KiB
C++
253 lines
9.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsTableColGroupFrame_h__
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#define nsTableColGroupFrame_h__
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#include "mozilla/Attributes.h"
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#include "nscore.h"
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#include "nsContainerFrame.h"
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#include "nsTableFrame.h"
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#include "mozilla/WritingModes.h"
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class nsTableColFrame;
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/**
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* nsTableColGroupFrame
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* data structure to maintain information about a single table cell's frame
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*/
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class nsTableColGroupFrame final : public nsContainerFrame
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{
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public:
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NS_DECL_FRAMEARENA_HELPERS
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/** instantiate a new instance of nsTableRowFrame.
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* @param aPresShell the pres shell for this frame
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*
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* @return the frame that was created
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*/
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friend nsTableColGroupFrame* NS_NewTableColGroupFrame(nsIPresShell* aPresShell,
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nsStyleContext* aContext);
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// nsIFrame overrides
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virtual void Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) override
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{
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nsContainerFrame::Init(aContent, aParent, aPrevInFlow);
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if (!aPrevInFlow) {
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mWritingMode = GetTableFrame()->GetWritingMode();
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}
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}
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nsTableFrame* GetTableFrame() const
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{
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nsIFrame* parent = GetParent();
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MOZ_ASSERT(parent && parent->IsTableFrame());
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MOZ_ASSERT(!parent->GetPrevInFlow(),
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"Col group should always be in a first-in-flow table frame");
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return static_cast<nsTableFrame*>(parent);
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}
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists) override;
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/** A colgroup can be caused by three things:
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* 1) An element with table-column-group display
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* 2) An element with a table-column display without a
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* table-column-group parent
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* 3) Cells that are not in a column (and hence get an anonymous
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* column and colgroup).
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* @return colgroup type
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*/
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nsTableColGroupType GetColType() const;
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/** Set the colgroup type based on the creation cause
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* @param aType - the reason why this colgroup is needed
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*/
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void SetColType(nsTableColGroupType aType);
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/** Real in this context are colgroups that come from an element
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* with table-column-group display or wrap around columns that
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* come from an element with table-column display. Colgroups
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* that are the result of wrapping cells in an anonymous
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* column and colgroup are not considered real here.
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* @param aTableFrame - the table parent of the colgroups
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* @return the last real colgroup
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*/
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static nsTableColGroupFrame* GetLastRealColGroup(nsTableFrame* aTableFrame);
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/** @see nsIFrame::DidSetStyleContext */
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virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) override;
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virtual void SetInitialChildList(ChildListID aListID,
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nsFrameList& aChildList) override;
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virtual void AppendFrames(ChildListID aListID,
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nsFrameList& aFrameList) override;
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virtual void InsertFrames(ChildListID aListID,
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nsIFrame* aPrevFrame,
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nsFrameList& aFrameList) override;
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virtual void RemoveFrame(ChildListID aListID,
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nsIFrame* aOldFrame) override;
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/** remove the column aChild from the column group, if requested renumber
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* the subsequent columns in this column group and all following column
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* groups. see also ResetColIndices for this
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* @param aChild - the column frame that needs to be removed
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* @param aResetSubsequentColIndices - if true the columns that follow
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* after aChild will be reenumerated
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*/
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void RemoveChild(nsTableColFrame& aChild,
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bool aResetSubsequentColIndices);
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/** reflow of a column group is a trivial matter of reflowing
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* the col group's children (columns), and setting this frame
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* to 0-size. Since tables are row-centric, column group frames
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* don't play directly in the rendering game. They do however
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* maintain important state that effects table and cell layout.
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*/
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virtual void Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override;
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/** Add column frames to the table storages: colframe cache and cellmap
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* this doesn't change the mFrames of the colgroup frame.
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* @param aFirstColIndex - the index at which aFirstFrame should be inserted
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* into the colframe cache.
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* @param aResetSubsequentColIndices - the indices of the col frames
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* after the insertion might need
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* an update
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* @param aCols - an iterator that can be used to iterate over the col
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* frames to be added. Once this is done, the frames on the
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* sbling chain of its .get() at that point will still need
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* their col indices updated.
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* @result - if there is no table frame or the table frame is not
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* the first in flow it will return an error
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*/
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nsresult AddColsToTable(int32_t aFirstColIndex,
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bool aResetSubsequentColIndices,
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const nsFrameList::Slice& aCols);
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const override;
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void Dump(int32_t aIndent);
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#endif
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/** returns the number of columns represented by this group.
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* if there are col children, count them (taking into account the span of each)
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* else, check my own span attribute.
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*/
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virtual int32_t GetColCount() const;
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/** first column on the child list */
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nsTableColFrame * GetFirstColumn();
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/** next sibling to aChildFrame that is a column frame, first column frame
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* in the column group if aChildFrame is null
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*/
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nsTableColFrame * GetNextColumn(nsIFrame *aChildFrame);
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/** @return - the position of the first column in this colgroup in the table
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* colframe cache.
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*/
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int32_t GetStartColumnIndex();
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/** set the position of the first column in this colgroup in the table
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* colframe cache.
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*/
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void SetStartColumnIndex(int32_t aIndex);
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/** helper method to get the span attribute for this colgroup */
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int32_t GetSpan();
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/** provide access to the mFrames list
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*/
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nsFrameList& GetWritableChildList();
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/** set the column index for all frames starting at aStartColFrame, it
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* will also reset the column indices in all subsequent colgroups
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* @param aFirstColGroup - start the reset operation inside this colgroup
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* @param aFirstColIndex - first column that is reset should get this index
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* @param aStartColFrame - if specified the reset starts with this column
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* inside the colgroup; if not specified, the reset
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* starts with the first column
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*/
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static void ResetColIndices(nsIFrame* aFirstColGroup,
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int32_t aFirstColIndex,
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nsIFrame* aStartColFrame = nullptr);
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/**
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* Gets inner border widths before collapsing with cell borders
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* Caller must get istart border from previous column
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* GetContinuousBCBorderWidth will not overwrite aBorder.IStart
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* see nsTablePainter about continuous borders
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*/
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void GetContinuousBCBorderWidth(mozilla::WritingMode aWM,
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mozilla::LogicalMargin& aBorder);
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/**
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* Set full border widths before collapsing with cell borders
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* @param aForSide - side to set; only accepts bstart and bend
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*/
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void SetContinuousBCBorderWidth(mozilla::LogicalSide aForSide,
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BCPixelSize aPixelValue);
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virtual bool IsFrameOfType(uint32_t aFlags) const override
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{
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return nsContainerFrame::IsFrameOfType(aFlags & ~(nsIFrame::eTablePart));
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}
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virtual void InvalidateFrame(uint32_t aDisplayItemKey = 0) override;
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virtual void InvalidateFrameWithRect(const nsRect& aRect, uint32_t aDisplayItemKey = 0) override;
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virtual void InvalidateFrameForRemoval() override { InvalidateFrameSubtree(); }
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protected:
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explicit nsTableColGroupFrame(nsStyleContext* aContext);
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void InsertColsReflow(int32_t aColIndex,
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const nsFrameList::Slice& aCols);
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virtual LogicalSides GetLogicalSkipSides(const ReflowInput* aReflowInput = nullptr) const override;
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// data members
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int32_t mColCount;
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// the starting column index this col group represents. Must be >= 0.
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int32_t mStartColIndex;
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// border width in pixels
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BCPixelSize mBStartContBorderWidth;
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BCPixelSize mBEndContBorderWidth;
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};
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inline nsTableColGroupFrame::nsTableColGroupFrame(nsStyleContext* aContext)
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: nsContainerFrame(aContext, mozilla::LayoutFrameType::TableColGroup)
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, mColCount(0)
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, mStartColIndex(0)
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{
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SetColType(eColGroupContent);
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}
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inline int32_t nsTableColGroupFrame::GetStartColumnIndex()
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{
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return mStartColIndex;
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}
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inline void nsTableColGroupFrame::SetStartColumnIndex (int32_t aIndex)
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{
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mStartColIndex = aIndex;
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}
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inline int32_t nsTableColGroupFrame::GetColCount() const
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{
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return mColCount;
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}
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inline nsFrameList& nsTableColGroupFrame::GetWritableChildList()
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{
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return mFrames;
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}
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#endif
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