forked from mirrors/gecko-dev
5730ee0ca5
Extend the per-frame-class bit we have to devirtualize IsLeaf to also devirtualize IsFrameOfType. That is, move this data to FrameClasses.py. This was done by going through all the frame classes, trying to preserve behavior. The only quirky thing is that I had to add two more trivial frame classes, `nsAudioFrame` for audio elements, and `nsFloatingFirstLetterFrame`. That's because these frame classes were returning different answers at runtime, but they do this only on conditions that trigger frame reconstruction (floating, and being an audio element, respectively). Differential Revision: https://phabricator.services.mozilla.com/D194703
238 lines
9.3 KiB
C++
238 lines
9.3 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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namespace mozilla {
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class PresShell;
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} // namespace mozilla
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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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public:
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NS_DECL_FRAMEARENA_HELPERS(nsTableColGroupFrame)
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/**
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* instantiate a new instance of nsTableRowFrame.
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*
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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(
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mozilla::PresShell* aPresShell, ComputedStyle* aStyle);
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// nsIFrame overrides
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void Init(nsIContent* aContent, nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) override {
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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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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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void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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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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*
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* In practice, we don't need to differentiate between cases (1) and (2),
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* because they both correspond to table-column-group boxes in the spec and
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* hence have observably identical behavior. Case three is flagged as a
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* synthetic colgroup, because it may need to have different behavior in some
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* cases.
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*/
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bool IsSynthetic() const;
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void SetIsSynthetic();
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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::DidSetComputedStyle */
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void DidSetComputedStyle(ComputedStyle* aOldComputedStyle) override;
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void SetInitialChildList(ChildListID aListID,
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nsFrameList&& aChildList) override;
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void AppendFrames(ChildListID aListID, nsFrameList&& aFrameList) override;
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void InsertFrames(ChildListID aListID, nsIFrame* aPrevFrame,
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const nsLineList::iterator* aPrevFrameLine,
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nsFrameList&& aFrameList) override;
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void RemoveFrame(DestroyContext&, ChildListID, nsIFrame*) 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(DestroyContext& aContext, 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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void Reflow(nsPresContext* aPresContext, 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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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
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* each) else, check my own span attribute.
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*/
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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, 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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void InvalidateFrame(uint32_t aDisplayItemKey = 0,
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bool aRebuildDisplayItems = true) override;
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void InvalidateFrameWithRect(const nsRect& aRect,
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uint32_t aDisplayItemKey = 0,
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bool aRebuildDisplayItems = true) override;
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void InvalidateFrameForRemoval() override { InvalidateFrameSubtree(); }
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protected:
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nsTableColGroupFrame(ComputedStyle* aStyle, nsPresContext* aPresContext);
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void InsertColsReflow(int32_t aColIndex, const nsFrameList::Slice& aCols);
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LogicalSides GetLogicalSkipSides() 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(ComputedStyle* aStyle,
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nsPresContext* aPresContext)
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: nsContainerFrame(aStyle, aPresContext, kClassID),
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mColCount(0),
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mStartColIndex(0) {}
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inline int32_t nsTableColGroupFrame::GetStartColumnIndex() {
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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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mStartColIndex = aIndex;
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}
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inline int32_t nsTableColGroupFrame::GetColCount() const { return mColCount; }
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inline nsFrameList& nsTableColGroupFrame::GetWritableChildList() {
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return mFrames;
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}
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#endif
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