diff options
Diffstat (limited to 'layout/tables/nsTableColGroupFrame.cpp')
| -rw-r--r-- | layout/tables/nsTableColGroupFrame.cpp | 485 |
1 files changed, 485 insertions, 0 deletions
diff --git a/layout/tables/nsTableColGroupFrame.cpp b/layout/tables/nsTableColGroupFrame.cpp new file mode 100644 index 0000000000..9c5ed9c942 --- /dev/null +++ b/layout/tables/nsTableColGroupFrame.cpp @@ -0,0 +1,485 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ +#include "nsTableColGroupFrame.h" + +#include "mozilla/ComputedStyle.h" +#include "mozilla/PresShell.h" +#include "mozilla/StaticPrefs_layout.h" +#include "nsTableColFrame.h" +#include "nsTableFrame.h" +#include "nsStyleConsts.h" +#include "nsPresContext.h" +#include "nsHTMLParts.h" +#include "nsGkAtoms.h" +#include "nsCOMPtr.h" +#include "nsCSSRendering.h" + +using namespace mozilla; + +#define COLGROUP_SYNTHETIC_BIT NS_FRAME_STATE_BIT(30) + +bool nsTableColGroupFrame::IsSynthetic() const { + return HasAnyStateBits(COLGROUP_SYNTHETIC_BIT); +} + +void nsTableColGroupFrame::SetIsSynthetic() { + AddStateBits(COLGROUP_SYNTHETIC_BIT); +} + +void nsTableColGroupFrame::ResetColIndices(nsIFrame* aFirstColGroup, + int32_t aFirstColIndex, + nsIFrame* aStartColFrame) { + nsTableColGroupFrame* colGroupFrame = (nsTableColGroupFrame*)aFirstColGroup; + int32_t colIndex = aFirstColIndex; + while (colGroupFrame) { + if (colGroupFrame->IsTableColGroupFrame()) { + // reset the starting col index for the first cg only if we should reset + // the whole colgroup (aStartColFrame defaults to nullptr) or if + // aFirstColIndex is smaller than the existing starting col index + if ((colIndex != aFirstColIndex) || + (colIndex < colGroupFrame->GetStartColumnIndex()) || + !aStartColFrame) { + colGroupFrame->SetStartColumnIndex(colIndex); + } + nsIFrame* colFrame = aStartColFrame; + if (!colFrame || (colIndex != aFirstColIndex)) { + colFrame = colGroupFrame->PrincipalChildList().FirstChild(); + } + while (colFrame) { + if (colFrame->IsTableColFrame()) { + ((nsTableColFrame*)colFrame)->SetColIndex(colIndex); + colIndex++; + } + colFrame = colFrame->GetNextSibling(); + } + } + colGroupFrame = + static_cast<nsTableColGroupFrame*>(colGroupFrame->GetNextSibling()); + } +} + +nsresult nsTableColGroupFrame::AddColsToTable(int32_t aFirstColIndex, + bool aResetSubsequentColIndices, + const nsFrameList::Slice& aCols) { + nsTableFrame* tableFrame = GetTableFrame(); + + tableFrame->InvalidateFrameSubtree(); + + // set the col indices of the col frames and and add col info to the table + int32_t colIndex = aFirstColIndex; + + // XXX: We cannot use range-based for loop because InsertCol() can destroy the + // nsTableColFrame in the slice we're traversing! Need to check the validity + // of *colIter. + auto colIter = aCols.begin(); + for (auto colIterEnd = aCols.end(); *colIter && colIter != colIterEnd; + ++colIter) { + auto* colFrame = static_cast<nsTableColFrame*>(*colIter); + colFrame->SetColIndex(colIndex); + mColCount++; + tableFrame->InsertCol(*colFrame, colIndex); + colIndex++; + } + + for (; *colIter; ++colIter) { + auto* colFrame = static_cast<nsTableColFrame*>(*colIter); + colFrame->SetColIndex(colIndex); + colIndex++; + } + + // We have already set the colindex for all the colframes in this + // colgroup that come after the first inserted colframe, but there could + // be other colgroups following this one and their colframes need + // correct colindices too. + if (aResetSubsequentColIndices && GetNextSibling()) { + ResetColIndices(GetNextSibling(), colIndex); + } + + return NS_OK; +} + +nsTableColGroupFrame* nsTableColGroupFrame::GetLastRealColGroup( + nsTableFrame* aTableFrame) { + const nsFrameList& colGroups = aTableFrame->GetColGroups(); + + auto lastColGroup = static_cast<nsTableColGroupFrame*>(colGroups.LastChild()); + if (!lastColGroup) { + return nullptr; + } + + if (!lastColGroup->IsSynthetic()) { + return lastColGroup; + } + + return static_cast<nsTableColGroupFrame*>(lastColGroup->GetPrevSibling()); +} + +// don't set mColCount here, it is done in AddColsToTable +void nsTableColGroupFrame::SetInitialChildList(ChildListID aListID, + nsFrameList&& aChildList) { + MOZ_ASSERT(mFrames.IsEmpty(), + "unexpected second call to SetInitialChildList"); + MOZ_ASSERT(aListID == FrameChildListID::Principal, "unexpected child list"); +#ifdef DEBUG + for (nsIFrame* f : aChildList) { + MOZ_ASSERT(f->GetParent() == this, "Unexpected parent"); + } +#endif + if (aChildList.IsEmpty()) { + GetTableFrame()->AppendAnonymousColFrames(this, GetSpan(), + eColAnonymousColGroup, false); + return; + } + + mFrames.AppendFrames(this, std::move(aChildList)); +} + +/* virtual */ +void nsTableColGroupFrame::DidSetComputedStyle( + ComputedStyle* aOldComputedStyle) { + nsContainerFrame::DidSetComputedStyle(aOldComputedStyle); + + if (!aOldComputedStyle) // avoid this on init + return; + + nsTableFrame* tableFrame = GetTableFrame(); + if (tableFrame->IsBorderCollapse() && + tableFrame->BCRecalcNeeded(aOldComputedStyle, Style())) { + int32_t colCount = GetColCount(); + if (!colCount) return; // this is a degenerated colgroup + TableArea damageArea(GetFirstColumn()->GetColIndex(), 0, colCount, + tableFrame->GetRowCount()); + tableFrame->AddBCDamageArea(damageArea); + } +} + +void nsTableColGroupFrame::AppendFrames(ChildListID aListID, + nsFrameList&& aFrameList) { + NS_ASSERTION(aListID == FrameChildListID::Principal, "unexpected child list"); + + nsTableColFrame* col = GetFirstColumn(); + nsTableColFrame* nextCol; + while (col && col->GetColType() == eColAnonymousColGroup) { + // this colgroup spans one or more columns but now that there is a + // real column below, spanned anonymous columns should be removed, + // since the HTML spec says to ignore the span of a colgroup if it + // has content columns in it. + nextCol = col->GetNextCol(); + DestroyContext context(PresShell()); + RemoveFrame(context, FrameChildListID::Principal, col); + col = nextCol; + } + + // Our next colframe should be an eColContent. We've removed all the + // eColAnonymousColGroup colframes, eColAnonymousCol colframes always follow + // eColContent ones, and eColAnonymousCell colframes only appear in a + // synthetic colgroup, which never gets AppendFrames() called on it. + MOZ_ASSERT(!col || col->GetColType() == eColContent, + "What's going on with our columns?"); + + const nsFrameList::Slice& newFrames = + mFrames.AppendFrames(this, std::move(aFrameList)); + InsertColsReflow(GetStartColumnIndex() + mColCount, newFrames); +} + +void nsTableColGroupFrame::InsertFrames( + ChildListID aListID, nsIFrame* aPrevFrame, + const nsLineList::iterator* aPrevFrameLine, nsFrameList&& aFrameList) { + NS_ASSERTION(aListID == FrameChildListID::Principal, "unexpected child list"); + NS_ASSERTION(!aPrevFrame || aPrevFrame->GetParent() == this, + "inserting after sibling frame with different parent"); + + nsTableColFrame* col = GetFirstColumn(); + nsTableColFrame* nextCol; + while (col && col->GetColType() == eColAnonymousColGroup) { + // this colgroup spans one or more columns but now that there is a + // real column below, spanned anonymous columns should be removed, + // since the HTML spec says to ignore the span of a colgroup if it + // has content columns in it. + nextCol = col->GetNextCol(); + if (col == aPrevFrame) { + // This can happen when we're being appended to + NS_ASSERTION(!nextCol || nextCol->GetColType() != eColAnonymousColGroup, + "Inserting in the middle of our anonymous cols?"); + // We'll want to insert at the beginning + aPrevFrame = nullptr; + } + DestroyContext context(PresShell()); + RemoveFrame(context, FrameChildListID::Principal, col); + col = nextCol; + } + + // Our next colframe should be an eColContent. We've removed all the + // eColAnonymousColGroup colframes, eColAnonymousCol colframes always follow + // eColContent ones, and eColAnonymousCell colframes only appear in a + // synthetic colgroup, which never gets InsertFrames() called on it. + MOZ_ASSERT(!col || col->GetColType() == eColContent, + "What's going on with our columns?"); + + NS_ASSERTION(!aPrevFrame || aPrevFrame == aPrevFrame->LastContinuation(), + "Prev frame should be last in continuation chain"); + NS_ASSERTION(!aPrevFrame || !GetNextColumn(aPrevFrame) || + GetNextColumn(aPrevFrame)->GetColType() != eColAnonymousCol, + "Shouldn't be inserting before a spanned colframe"); + + const nsFrameList::Slice& newFrames = + mFrames.InsertFrames(this, aPrevFrame, std::move(aFrameList)); + nsIFrame* prevFrame = nsTableFrame::GetFrameAtOrBefore( + this, aPrevFrame, LayoutFrameType::TableCol); + + int32_t colIndex = (prevFrame) + ? ((nsTableColFrame*)prevFrame)->GetColIndex() + 1 + : GetStartColumnIndex(); + InsertColsReflow(colIndex, newFrames); +} + +void nsTableColGroupFrame::InsertColsReflow(int32_t aColIndex, + const nsFrameList::Slice& aCols) { + AddColsToTable(aColIndex, true, aCols); + + PresShell()->FrameNeedsReflow(this, IntrinsicDirty::FrameAndAncestors, + NS_FRAME_HAS_DIRTY_CHILDREN); +} + +void nsTableColGroupFrame::RemoveChild(DestroyContext& aContext, + nsTableColFrame& aChild, + bool aResetSubsequentColIndices) { + int32_t colIndex = 0; + nsIFrame* nextChild = nullptr; + if (aResetSubsequentColIndices) { + colIndex = aChild.GetColIndex(); + nextChild = aChild.GetNextSibling(); + } + mFrames.DestroyFrame(aContext, &aChild); + mColCount--; + if (aResetSubsequentColIndices) { + if (nextChild) { // reset inside this and all following colgroups + ResetColIndices(this, colIndex, nextChild); + } else { + nsIFrame* nextGroup = GetNextSibling(); + if (nextGroup) // reset next and all following colgroups + ResetColIndices(nextGroup, colIndex); + } + } + + PresShell()->FrameNeedsReflow(this, IntrinsicDirty::FrameAndAncestors, + NS_FRAME_HAS_DIRTY_CHILDREN); +} + +void nsTableColGroupFrame::RemoveFrame(DestroyContext& aContext, + ChildListID aListID, + nsIFrame* aOldFrame) { + NS_ASSERTION(aListID == FrameChildListID::Principal, "unexpected child list"); + + if (!aOldFrame) { + return; + } + bool contentRemoval = false; + + if (aOldFrame->IsTableColFrame()) { + nsTableColFrame* colFrame = (nsTableColFrame*)aOldFrame; + if (colFrame->GetColType() == eColContent) { + contentRemoval = true; + // Remove any anonymous column frames this <col> produced via a colspan + nsTableColFrame* col = colFrame->GetNextCol(); + nsTableColFrame* nextCol; + while (col && col->GetColType() == eColAnonymousCol) { + nextCol = col->GetNextCol(); + RemoveFrame(aContext, FrameChildListID::Principal, col); + col = nextCol; + } + } + + int32_t colIndex = colFrame->GetColIndex(); + // The RemoveChild call handles calling FrameNeedsReflow on us. + RemoveChild(aContext, *colFrame, true); + + nsTableFrame* tableFrame = GetTableFrame(); + tableFrame->RemoveCol(this, colIndex, true, true); + if (mFrames.IsEmpty() && contentRemoval && !IsSynthetic()) { + tableFrame->AppendAnonymousColFrames(this, GetSpan(), + eColAnonymousColGroup, true); + } + } else { + mFrames.DestroyFrame(aContext, aOldFrame); + } +} + +nsIFrame::LogicalSides nsTableColGroupFrame::GetLogicalSkipSides() const { + LogicalSides skip(mWritingMode); + if (MOZ_UNLIKELY(StyleBorder()->mBoxDecorationBreak == + StyleBoxDecorationBreak::Clone)) { + return skip; + } + + if (GetPrevInFlow()) { + skip |= eLogicalSideBitsBStart; + } + if (GetNextInFlow()) { + skip |= eLogicalSideBitsBEnd; + } + return skip; +} + +void nsTableColGroupFrame::Reflow(nsPresContext* aPresContext, + ReflowOutput& aDesiredSize, + const ReflowInput& aReflowInput, + nsReflowStatus& aStatus) { + MarkInReflow(); + DO_GLOBAL_REFLOW_COUNT("nsTableColGroupFrame"); + DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus); + MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!"); + NS_ASSERTION(nullptr != mContent, "bad state -- null content for frame"); + + const nsStyleVisibility* groupVis = StyleVisibility(); + bool collapseGroup = StyleVisibility::Collapse == groupVis->mVisible; + if (collapseGroup) { + GetTableFrame()->SetNeedToCollapse(true); + } + // for every content child that (is a column thingy and does not already have + // a frame) create a frame and adjust it's style + + for (nsIFrame* kidFrame = mFrames.FirstChild(); kidFrame; + kidFrame = kidFrame->GetNextSibling()) { + // Give the child frame a chance to reflow, even though we know it'll have 0 + // size + ReflowOutput kidSize(aReflowInput); + ReflowInput kidReflowInput(aPresContext, aReflowInput, kidFrame, + LogicalSize(kidFrame->GetWritingMode())); + + nsReflowStatus status; + ReflowChild(kidFrame, aPresContext, kidSize, kidReflowInput, 0, 0, + ReflowChildFlags::Default, status); + FinishReflowChild(kidFrame, aPresContext, kidSize, &kidReflowInput, 0, 0, + ReflowChildFlags::Default); + } + + aDesiredSize.ClearSize(); +} + +void nsTableColGroupFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder, + const nsDisplayListSet& aLists) { + // Per https://drafts.csswg.org/css-tables-3/#global-style-overrides: + // "All css properties of table-column and table-column-group boxes are + // ignored, except when explicitly specified by this specification." + // CSS outlines and box-shadows fall into this category, so we skip them + // on these boxes. + MOZ_ASSERT_UNREACHABLE("Colgroups don't paint themselves"); +} + +nsTableColFrame* nsTableColGroupFrame::GetFirstColumn() { + return GetNextColumn(nullptr); +} + +nsTableColFrame* nsTableColGroupFrame::GetNextColumn(nsIFrame* aChildFrame) { + nsTableColFrame* result = nullptr; + nsIFrame* childFrame = aChildFrame; + if (!childFrame) { + childFrame = mFrames.FirstChild(); + } else { + childFrame = childFrame->GetNextSibling(); + } + while (childFrame) { + if (mozilla::StyleDisplay::TableColumn == + childFrame->StyleDisplay()->mDisplay) { + result = (nsTableColFrame*)childFrame; + break; + } + childFrame = childFrame->GetNextSibling(); + } + return result; +} + +int32_t nsTableColGroupFrame::GetSpan() { return StyleTable()->mXSpan; } + +void nsTableColGroupFrame::SetContinuousBCBorderWidth(LogicalSide aForSide, + BCPixelSize aPixelValue) { + switch (aForSide) { + case eLogicalSideBStart: + mBStartContBorderWidth = aPixelValue; + return; + case eLogicalSideBEnd: + mBEndContBorderWidth = aPixelValue; + return; + default: + NS_ERROR("invalid side arg"); + } +} + +void nsTableColGroupFrame::GetContinuousBCBorderWidth(WritingMode aWM, + LogicalMargin& aBorder) { + int32_t d2a = PresContext()->AppUnitsPerDevPixel(); + nsTableColFrame* col = + GetTableFrame()->GetColFrame(mStartColIndex + mColCount - 1); + col->GetContinuousBCBorderWidth(aWM, aBorder); + aBorder.BStart(aWM) = BC_BORDER_END_HALF_COORD(d2a, mBStartContBorderWidth); + aBorder.BEnd(aWM) = BC_BORDER_START_HALF_COORD(d2a, mBEndContBorderWidth); +} + +/* ----- global methods ----- */ + +nsTableColGroupFrame* NS_NewTableColGroupFrame(PresShell* aPresShell, + ComputedStyle* aStyle) { + return new (aPresShell) + nsTableColGroupFrame(aStyle, aPresShell->GetPresContext()); +} + +NS_IMPL_FRAMEARENA_HELPERS(nsTableColGroupFrame) + +void nsTableColGroupFrame::InvalidateFrame(uint32_t aDisplayItemKey, + bool aRebuildDisplayItems) { + nsIFrame::InvalidateFrame(aDisplayItemKey, aRebuildDisplayItems); + if (GetTableFrame()->IsBorderCollapse()) { + const bool rebuild = StaticPrefs::layout_display_list_retain_sc(); + GetParent()->InvalidateFrameWithRect(InkOverflowRect() + GetPosition(), + aDisplayItemKey, rebuild); + } +} + +void nsTableColGroupFrame::InvalidateFrameWithRect(const nsRect& aRect, + uint32_t aDisplayItemKey, + bool aRebuildDisplayItems) { + nsIFrame::InvalidateFrameWithRect(aRect, aDisplayItemKey, + aRebuildDisplayItems); + // If we have filters applied that would affects our bounds, then + // we get an inactive layer created and this is computed + // within FrameLayerBuilder + GetParent()->InvalidateFrameWithRect(aRect + GetPosition(), aDisplayItemKey, + aRebuildDisplayItems); +} + +#ifdef DEBUG_FRAME_DUMP +nsresult nsTableColGroupFrame::GetFrameName(nsAString& aResult) const { + return MakeFrameName(u"TableColGroup"_ns, aResult); +} + +void nsTableColGroupFrame::Dump(int32_t aIndent) { + char* indent = new char[aIndent + 1]; + if (!indent) return; + for (int32_t i = 0; i < aIndent + 1; i++) { + indent[i] = ' '; + } + indent[aIndent] = 0; + + printf( + "%s**START COLGROUP DUMP**\n%s startcolIndex=%d colcount=%d span=%d " + "isSynthetic=%s", + indent, indent, GetStartColumnIndex(), GetColCount(), GetSpan(), + IsSynthetic() ? "true" : "false"); + + // verify the colindices + DebugOnly<int32_t> j = GetStartColumnIndex(); + nsTableColFrame* col = GetFirstColumn(); + while (col) { + NS_ASSERTION(j == col->GetColIndex(), "wrong colindex on col frame"); + col = col->GetNextCol(); + j++; + } + NS_ASSERTION((j - GetStartColumnIndex()) == GetColCount(), + "number of cols out of sync"); + printf("\n%s**END COLGROUP DUMP** ", indent); + delete[] indent; +} +#endif |