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gecko-dev/layout/tables/nsTableWrapperFrame.cpp

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/* -*- 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 "nsTableWrapperFrame.h"
#include "mozilla/ComputedStyle.h"
#include "mozilla/PresShell.h"
#include "nsFrameManager.h"
#include "nsTableFrame.h"
#include "nsTableCellFrame.h"
#include "nsStyleConsts.h"
#include "nsPresContext.h"
#include "nsCSSRendering.h"
#include "nsIContent.h"
#include "prinrval.h"
#include "nsGkAtoms.h"
#include "nsHTMLParts.h"
#include "nsDisplayList.h"
#include "nsLayoutUtils.h"
#include "nsIFrameInlines.h"
#include <algorithm>
using namespace mozilla;
using namespace mozilla::layout;
#define NO_SIDE 100
/* virtual */
nscoord nsTableWrapperFrame::GetLogicalBaseline(
WritingMode aWritingMode) const {
if (StyleDisplay()->IsContainLayout()) {
// We have no baseline. Fall back to the inherited impl which is
// appropriate for this situation.
return nsContainerFrame::GetLogicalBaseline(aWritingMode);
}
nsIFrame* kid = mFrames.FirstChild();
if (!kid) {
MOZ_ASSERT_UNREACHABLE("no inner table");
return nsContainerFrame::GetLogicalBaseline(aWritingMode);
}
return kid->GetLogicalBaseline(aWritingMode) +
kid->BStart(aWritingMode, mRect.Size());
}
nsTableWrapperFrame::nsTableWrapperFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext,
ClassID aID)
: nsContainerFrame(aStyle, aPresContext, aID) {}
nsTableWrapperFrame::~nsTableWrapperFrame() = default;
NS_QUERYFRAME_HEAD(nsTableWrapperFrame)
NS_QUERYFRAME_ENTRY(nsTableWrapperFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
#ifdef ACCESSIBILITY
a11y::AccType nsTableWrapperFrame::AccessibleType() {
return a11y::eHTMLTableType;
}
#endif
void nsTableWrapperFrame::DestroyFrom(nsIFrame* aDestructRoot,
PostDestroyData& aPostDestroyData) {
DestroyAbsoluteFrames(aDestructRoot, aPostDestroyData);
mCaptionFrames.DestroyFramesFrom(aDestructRoot, aPostDestroyData);
nsContainerFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
}
const nsFrameList& nsTableWrapperFrame::GetChildList(
ChildListID aListID) const {
if (aListID == kCaptionList) {
return mCaptionFrames;
}
return nsContainerFrame::GetChildList(aListID);
}
void nsTableWrapperFrame::GetChildLists(nsTArray<ChildList>* aLists) const {
nsContainerFrame::GetChildLists(aLists);
mCaptionFrames.AppendIfNonempty(aLists, kCaptionList);
}
void nsTableWrapperFrame::SetInitialChildList(ChildListID aListID,
nsFrameList& aChildList) {
if (kCaptionList == aListID) {
#ifdef DEBUG
nsIFrame::VerifyDirtyBitSet(aChildList);
for (nsIFrame* f : aChildList) {
MOZ_ASSERT(f->GetParent() == this, "Unexpected parent");
}
#endif
// the frame constructor already checked for table-caption display type
MOZ_ASSERT(mCaptionFrames.IsEmpty(),
"already have child frames in CaptionList");
mCaptionFrames.SetFrames(aChildList);
} else {
MOZ_ASSERT(kPrincipalList != aListID ||
(aChildList.FirstChild() &&
aChildList.FirstChild() == aChildList.LastChild() &&
aChildList.FirstChild()->IsTableFrame()),
"expected a single table frame in principal child list");
nsContainerFrame::SetInitialChildList(aListID, aChildList);
}
}
void nsTableWrapperFrame::AppendFrames(ChildListID aListID,
nsFrameList& aFrameList) {
// We only have two child frames: the inner table and a caption frame.
// The inner frame is provided when we're initialized, and it cannot change
MOZ_ASSERT(kCaptionList == aListID, "unexpected child list");
MOZ_ASSERT(aFrameList.IsEmpty() || aFrameList.FirstChild()->IsTableCaption(),
"appending non-caption frame to captionList");
mCaptionFrames.AppendFrames(nullptr, aFrameList);
// Reflow the new caption frame. It's already marked dirty, so
// just tell the pres shell.
PresShell()->FrameNeedsReflow(this, IntrinsicDirty::TreeChange,
NS_FRAME_HAS_DIRTY_CHILDREN);
// The presence of caption frames makes us sort our display
// list differently, so mark us as changed for the new
// ordering.
MarkNeedsDisplayItemRebuild();
}
void nsTableWrapperFrame::InsertFrames(
ChildListID aListID, nsIFrame* aPrevFrame,
const nsLineList::iterator* aPrevFrameLine, nsFrameList& aFrameList) {
MOZ_ASSERT(kCaptionList == aListID, "unexpected child list");
MOZ_ASSERT(aFrameList.IsEmpty() || aFrameList.FirstChild()->IsTableCaption(),
"inserting non-caption frame into captionList");
MOZ_ASSERT(!aPrevFrame || aPrevFrame->GetParent() == this,
"inserting after sibling frame with different parent");
mCaptionFrames.InsertFrames(nullptr, aPrevFrame, aFrameList);
// Reflow the new caption frame. It's already marked dirty, so
// just tell the pres shell.
PresShell()->FrameNeedsReflow(this, IntrinsicDirty::TreeChange,
NS_FRAME_HAS_DIRTY_CHILDREN);
MarkNeedsDisplayItemRebuild();
}
void nsTableWrapperFrame::RemoveFrame(ChildListID aListID,
nsIFrame* aOldFrame) {
// We only have two child frames: the inner table and one caption frame.
// The inner frame can't be removed so this should be the caption
MOZ_ASSERT(kCaptionList == aListID, "can't remove inner frame");
if (HasSideCaption()) {
// The old caption isize had an effect on the inner table isize, so
// we're going to need to reflow it. Mark it dirty
InnerTableFrame()->MarkSubtreeDirty();
}
// Remove the frame and destroy it
mCaptionFrames.DestroyFrame(aOldFrame);
PresShell()->FrameNeedsReflow(this, IntrinsicDirty::TreeChange,
NS_FRAME_HAS_DIRTY_CHILDREN);
MarkNeedsDisplayItemRebuild();
}
void nsTableWrapperFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) {
// No border or background is painted because they belong to the inner table.
// The outline belongs to the wrapper frame so it can contain the caption.
// If there's no caption, take a short cut to avoid having to create
// the special display list set and then sort it.
if (mCaptionFrames.IsEmpty()) {
BuildDisplayListForInnerTable(aBuilder, aLists);
DisplayOutline(aBuilder, aLists);
return;
}
nsDisplayListCollection set(aBuilder);
BuildDisplayListForInnerTable(aBuilder, set);
nsDisplayListSet captionSet(set, set.BlockBorderBackgrounds());
BuildDisplayListForChild(aBuilder, mCaptionFrames.FirstChild(), captionSet);
// Now we have to sort everything by content order, since the caption
// may be somewhere inside the table.
// We don't sort BlockBorderBackgrounds and BorderBackgrounds because the
// display items in those lists should stay out of content order in order to
// follow the rules in https://www.w3.org/TR/CSS21/zindex.html#painting-order
// and paint the caption background after all of the rest.
set.Floats()->SortByContentOrder(GetContent());
set.Content()->SortByContentOrder(GetContent());
set.PositionedDescendants()->SortByContentOrder(GetContent());
set.Outlines()->SortByContentOrder(GetContent());
set.MoveTo(aLists);
DisplayOutline(aBuilder, aLists);
}
void nsTableWrapperFrame::BuildDisplayListForInnerTable(
nsDisplayListBuilder* aBuilder, const nsDisplayListSet& aLists) {
// Just paint the regular children, but the children's background is our
// true background (there should only be one, the real table)
nsIFrame* kid = mFrames.FirstChild();
// The children should be in content order
while (kid) {
BuildDisplayListForChild(aBuilder, kid, aLists);
kid = kid->GetNextSibling();
}
}
ComputedStyle* nsTableWrapperFrame::GetParentComputedStyle(
nsIFrame** aProviderFrame) const {
// The table wrapper frame and the (inner) table frame split the style
// data by giving the table frame the ComputedStyle associated with
// the table content node and creating a ComputedStyle for the wrapper
// frame that is a *child* of the table frame's ComputedStyle,
// matching the ::-moz-table-wrapper pseudo-element. html.css has a
// rule that causes that pseudo-element (and thus the wrapper table)
// to inherit *some* style properties from the table frame. The
// children of the table inherit directly from the inner table, and
// the table wrapper's ComputedStyle is a leaf.
return (*aProviderFrame = InnerTableFrame())->Style();
}
// INCREMENTAL REFLOW HELPER FUNCTIONS
void nsTableWrapperFrame::InitChildReflowInput(nsPresContext& aPresContext,
const ReflowInput& aOuterRI,
ReflowInput& aReflowInput) {
nsMargin collapseBorder;
nsMargin collapsePadding(0, 0, 0, 0);
nsMargin* pCollapseBorder = nullptr;
nsMargin* pCollapsePadding = nullptr;
Maybe<LogicalSize> cbSize;
if (aReflowInput.mFrame == InnerTableFrame()) {
WritingMode wm = aReflowInput.GetWritingMode();
if (InnerTableFrame()->IsBorderCollapse()) {
LogicalMargin border = InnerTableFrame()->GetIncludedOuterBCBorder(wm);
collapseBorder = border.GetPhysicalMargin(wm);
pCollapseBorder = &collapseBorder;
pCollapsePadding = &collapsePadding;
}
// Propagate our stored CB size if present, minus any margins.
//
// Note that inner table computed margins are always zero, they're inherited
// by the table wrapper, so we need to get our margin from aOuterRI.
if (!HasAnyStateBits(NS_FRAME_OUT_OF_FLOW)) {
if (LogicalSize* cb = GetProperty(GridItemCBSizeProperty())) {
cbSize.emplace(*cb);
*cbSize -= aOuterRI.ComputedLogicalMargin().Size(wm);
}
}
if (!cbSize) {
// For inner table frames, the containing block is the same as for
// the outer table frame.
cbSize.emplace(aOuterRI.mContainingBlockSize);
}
}
aReflowInput.Init(&aPresContext, cbSize, pCollapseBorder, pCollapsePadding);
}
// get the margin and padding data. ReflowInput doesn't handle the
// case of auto margins
void nsTableWrapperFrame::GetChildMargin(nsPresContext* aPresContext,
const ReflowInput& aOuterRI,
nsIFrame* aChildFrame,
nscoord aAvailISize,
LogicalMargin& aMargin) {
NS_ASSERTION(!aChildFrame->IsTableCaption(),
"didn't expect caption frame; writing-mode may be wrong!");
// construct a reflow input to compute margin and padding. Auto margins
// will not be computed at this time.
// create and init the child reflow input
// XXX We really shouldn't construct a reflow input to do this.
WritingMode wm = aOuterRI.GetWritingMode();
LogicalSize availSize(wm, aAvailISize, aOuterRI.AvailableSize(wm).BSize(wm));
ReflowInput childRI(aPresContext, aOuterRI, aChildFrame, availSize, Nothing(),
ReflowInput::CALLER_WILL_INIT);
InitChildReflowInput(*aPresContext, aOuterRI, childRI);
aMargin = childRI.ComputedLogicalMargin();
}
static nsSize GetContainingBlockSize(const ReflowInput& aOuterRI) {
nsSize size(0, 0);
const ReflowInput* containRS = aOuterRI.mCBReflowInput;
if (containRS) {
size.width = containRS->ComputedWidth();
if (NS_UNCONSTRAINEDSIZE == size.width) {
size.width = 0;
}
size.height = containRS->ComputedHeight();
if (NS_UNCONSTRAINEDSIZE == size.height) {
size.height = 0;
}
}
return size;
}
/* virtual */
nscoord nsTableWrapperFrame::GetMinISize(gfxContext* aRenderingContext) {
nscoord iSize = nsLayoutUtils::IntrinsicForContainer(
aRenderingContext, InnerTableFrame(), nsLayoutUtils::MIN_ISIZE);
DISPLAY_MIN_INLINE_SIZE(this, iSize);
if (mCaptionFrames.NotEmpty()) {
nscoord capISize = nsLayoutUtils::IntrinsicForContainer(
aRenderingContext, mCaptionFrames.FirstChild(),
nsLayoutUtils::MIN_ISIZE);
if (HasSideCaption()) {
iSize += capISize;
} else {
if (capISize > iSize) {
iSize = capISize;
}
}
}
return iSize;
}
/* virtual */
nscoord nsTableWrapperFrame::GetPrefISize(gfxContext* aRenderingContext) {
nscoord maxISize;
DISPLAY_PREF_INLINE_SIZE(this, maxISize);
maxISize = nsLayoutUtils::IntrinsicForContainer(
aRenderingContext, InnerTableFrame(), nsLayoutUtils::PREF_ISIZE);
if (mCaptionFrames.NotEmpty()) {
uint8_t captionSide = GetCaptionSide();
switch (captionSide) {
case NS_STYLE_CAPTION_SIDE_LEFT:
case NS_STYLE_CAPTION_SIDE_RIGHT: {
nscoord capMin = nsLayoutUtils::IntrinsicForContainer(
aRenderingContext, mCaptionFrames.FirstChild(),
nsLayoutUtils::MIN_ISIZE);
maxISize += capMin;
} break;
default: {
nsLayoutUtils::IntrinsicISizeType iwt;
if (captionSide == NS_STYLE_CAPTION_SIDE_TOP ||
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM) {
// Don't let the caption's pref isize expand the table's pref
// isize.
iwt = nsLayoutUtils::MIN_ISIZE;
} else {
NS_ASSERTION(captionSide == NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE ||
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE,
"unexpected caption side");
iwt = nsLayoutUtils::PREF_ISIZE;
}
nscoord capPref = nsLayoutUtils::IntrinsicForContainer(
aRenderingContext, mCaptionFrames.FirstChild(), iwt);
maxISize = std::max(maxISize, capPref);
} break;
}
}
return maxISize;
}
nscoord nsTableWrapperFrame::ChildShrinkWrapISize(
gfxContext* aRenderingContext, nsIFrame* aChildFrame, WritingMode aWM,
LogicalSize aCBSize, nscoord aAvailableISize,
nscoord* aMarginResult) const {
AutoMaybeDisableFontInflation an(aChildFrame);
// For the caption frame, child's WM may differ from the table's main WM.
WritingMode childWM = aChildFrame->GetWritingMode();
SizeComputationInput offsets(aChildFrame, aRenderingContext, aWM,
aCBSize.ISize(aWM));
LogicalSize marginSize =
offsets.ComputedLogicalMargin().Size(childWM).ConvertTo(aWM, childWM);
LogicalSize paddingSize =
offsets.ComputedLogicalPadding().Size(childWM).ConvertTo(aWM, childWM);
LogicalSize bpSize =
offsets.ComputedLogicalBorderPadding().Size(childWM).ConvertTo(aWM,
childWM);
// Shrink-wrap aChildFrame by default, except if we're a stretched grid item.
auto flags = ComputeSizeFlags::eShrinkWrap;
if (MOZ_UNLIKELY(IsGridItem()) && !StyleMargin()->HasInlineAxisAuto(aWM)) {
const auto* parent = GetParent();
auto inlineAxisAlignment =
aWM.IsOrthogonalTo(parent->GetWritingMode())
? StylePosition()->UsedAlignSelf(parent->Style())._0
: StylePosition()->UsedJustifySelf(parent->Style())._0;
if (inlineAxisAlignment == StyleAlignFlags::NORMAL ||
inlineAxisAlignment == StyleAlignFlags::STRETCH) {
flags = nsIFrame::ComputeSizeFlags::eDefault;
}
}
LogicalSize size = aChildFrame->ComputeSize(
aRenderingContext, aWM, aCBSize, aAvailableISize, marginSize,
bpSize - paddingSize, paddingSize, flags);
if (aMarginResult) {
*aMarginResult = offsets.ComputedLogicalMargin().IStartEnd(aWM);
}
return size.ISize(aWM) + marginSize.ISize(aWM) + bpSize.ISize(aWM);
}
/* virtual */
LogicalSize nsTableWrapperFrame::ComputeAutoSize(
gfxContext* aRenderingContext, WritingMode aWM, const LogicalSize& aCBSize,
nscoord aAvailableISize, const LogicalSize& aMargin,
const LogicalSize& aBorder, const LogicalSize& aPadding,
ComputeSizeFlags aFlags) {
nscoord kidAvailableISize = aAvailableISize - aMargin.ISize(aWM);
NS_ASSERTION(aBorder.IsAllZero() && aPadding.IsAllZero(),
"Table wrapper frames cannot have borders or paddings");
// When we're shrink-wrapping, our auto size needs to wrap around the
// actual size of the table, which (if it is specified as a percent)
// could be something that is not reflected in our GetMinISize and
// GetPrefISize. See bug 349457 for an example.
// Match the availableISize logic in Reflow.
uint8_t captionSide = GetCaptionSide();
nscoord inlineSize;
if (captionSide == NO_SIDE) {
inlineSize = ChildShrinkWrapISize(aRenderingContext, InnerTableFrame(), aWM,
aCBSize, kidAvailableISize);
} else if (captionSide == NS_STYLE_CAPTION_SIDE_LEFT ||
captionSide == NS_STYLE_CAPTION_SIDE_RIGHT) {
nscoord capISize =
ChildShrinkWrapISize(aRenderingContext, mCaptionFrames.FirstChild(),
aWM, aCBSize, kidAvailableISize);
inlineSize = capISize +
ChildShrinkWrapISize(aRenderingContext, InnerTableFrame(), aWM,
aCBSize, kidAvailableISize - capISize);
} else if (captionSide == NS_STYLE_CAPTION_SIDE_TOP ||
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM) {
nscoord margin;
inlineSize = ChildShrinkWrapISize(aRenderingContext, InnerTableFrame(), aWM,
aCBSize, kidAvailableISize, &margin);
nscoord capISize =
ChildShrinkWrapISize(aRenderingContext, mCaptionFrames.FirstChild(),
aWM, aCBSize, inlineSize - margin);
if (capISize > inlineSize) {
inlineSize = capISize;
}
} else {
NS_ASSERTION(captionSide == NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE ||
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE,
"unexpected caption-side");
inlineSize = ChildShrinkWrapISize(aRenderingContext, InnerTableFrame(), aWM,
aCBSize, kidAvailableISize);
nscoord capISize =
ChildShrinkWrapISize(aRenderingContext, mCaptionFrames.FirstChild(),
aWM, aCBSize, kidAvailableISize);
if (capISize > inlineSize) {
inlineSize = capISize;
}
}
return LogicalSize(aWM, inlineSize, NS_UNCONSTRAINEDSIZE);
}
uint8_t nsTableWrapperFrame::GetCaptionSide() {
if (mCaptionFrames.NotEmpty()) {
return mCaptionFrames.FirstChild()->StyleTableBorder()->mCaptionSide;
} else {
return NO_SIDE; // no caption
}
}
StyleVerticalAlignKeyword nsTableWrapperFrame::GetCaptionVerticalAlign() const {
const auto& va = mCaptionFrames.FirstChild()->StyleDisplay()->mVerticalAlign;
return va.IsKeyword() ? va.AsKeyword() : StyleVerticalAlignKeyword::Top;
}
void nsTableWrapperFrame::SetDesiredSize(uint8_t aCaptionSide,
const LogicalSize& aInnerSize,
const LogicalSize& aCaptionSize,
const LogicalMargin& aInnerMargin,
const LogicalMargin& aCaptionMargin,
nscoord& aISize, nscoord& aBSize,
WritingMode aWM) {
aISize = aBSize = 0;
// compute the overall inline-size
switch (aCaptionSide) {
case NS_STYLE_CAPTION_SIDE_LEFT:
aISize =
std::max(aInnerMargin.LineLeft(aWM),
aCaptionMargin.IStartEnd(aWM) + aCaptionSize.ISize(aWM)) +
aInnerSize.ISize(aWM) + aInnerMargin.LineRight(aWM);
break;
case NS_STYLE_CAPTION_SIDE_RIGHT:
aISize =
std::max(aInnerMargin.LineRight(aWM),
aCaptionMargin.IStartEnd(aWM) + aCaptionSize.ISize(aWM)) +
aInnerSize.ISize(aWM) + aInnerMargin.LineLeft(aWM);
break;
default:
aISize =
std::max(aInnerMargin.IStartEnd(aWM) + aInnerSize.ISize(aWM),
aCaptionMargin.IStartEnd(aWM) + aCaptionSize.ISize(aWM));
break;
}
// compute the overall block-size
switch (aCaptionSide) {
case NS_STYLE_CAPTION_SIDE_TOP:
case NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE:
aBSize = aInnerSize.BSize(aWM) + aInnerMargin.BEnd(aWM);
aBSize +=
std::max(aInnerMargin.BStart(aWM),
aCaptionSize.BSize(aWM) + aCaptionMargin.BStartEnd(aWM));
break;
case NS_STYLE_CAPTION_SIDE_BOTTOM:
case NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE:
aBSize = aInnerSize.BSize(aWM) + aInnerMargin.BStart(aWM);
aBSize +=
std::max(aInnerMargin.BEnd(aWM),
aCaptionSize.BSize(aWM) + aCaptionMargin.BStartEnd(aWM));
break;
case NS_STYLE_CAPTION_SIDE_LEFT:
case NS_STYLE_CAPTION_SIDE_RIGHT:
aBSize = aInnerMargin.BStart(aWM);
aBSize += std::max(aInnerSize.BSize(aWM) + aInnerMargin.BEnd(aWM),
aCaptionSize.BSize(aWM) + aCaptionMargin.BEnd(aWM));
break;
default:
NS_ASSERTION(aCaptionSide == NO_SIDE, "unexpected caption side");
aBSize = aInnerSize.BSize(aWM) + aInnerMargin.BStartEnd(aWM);
break;
}
// negative sizes can upset overflow-area code
aISize = std::max(aISize, 0);
aBSize = std::max(aBSize, 0);
}
nsresult nsTableWrapperFrame::GetCaptionOrigin(
uint32_t aCaptionSide, const LogicalSize& aContainBlockSize,
const LogicalSize& aInnerSize, const LogicalMargin& aInnerMargin,
const LogicalSize& aCaptionSize, LogicalMargin& aCaptionMargin,
LogicalPoint& aOrigin, WritingMode aWM) {
aOrigin.I(aWM) = aOrigin.B(aWM) = 0;
if ((NS_UNCONSTRAINEDSIZE == aInnerSize.ISize(aWM)) ||
(NS_UNCONSTRAINEDSIZE == aInnerSize.BSize(aWM)) ||
(NS_UNCONSTRAINEDSIZE == aCaptionSize.ISize(aWM)) ||
(NS_UNCONSTRAINEDSIZE == aCaptionSize.BSize(aWM))) {
return NS_OK;
}
if (mCaptionFrames.IsEmpty()) {
return NS_OK;
}
NS_ASSERTION(NS_AUTOMARGIN != aCaptionMargin.IStart(aWM) &&
NS_AUTOMARGIN != aCaptionMargin.BStart(aWM) &&
NS_AUTOMARGIN != aCaptionMargin.BEnd(aWM),
"The computed caption margin is auto?");
// inline-dir computation
switch (aCaptionSide) {
case NS_STYLE_CAPTION_SIDE_BOTTOM:
case NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE:
aOrigin.I(aWM) = aCaptionMargin.IStart(aWM);
if (aCaptionSide == NS_STYLE_CAPTION_SIDE_BOTTOM) {
// We placed the caption using only the table's isize as available
// isize, and we should position it this way as well.
aOrigin.I(aWM) += aInnerMargin.IStart(aWM);
}
break;
case NS_STYLE_CAPTION_SIDE_LEFT:
case NS_STYLE_CAPTION_SIDE_RIGHT:
aOrigin.I(aWM) = aCaptionMargin.IStart(aWM);
if (aWM.IsBidiLTR() == (aCaptionSide == NS_STYLE_CAPTION_SIDE_RIGHT)) {
aOrigin.I(aWM) += aInnerMargin.IStart(aWM) + aInnerSize.ISize(aWM);
}
break;
default: // block-start
NS_ASSERTION(aCaptionSide == NS_STYLE_CAPTION_SIDE_TOP ||
aCaptionSide == NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE,
"unexpected caption side");
aOrigin.I(aWM) = aCaptionMargin.IStart(aWM);
if (aCaptionSide == NS_STYLE_CAPTION_SIDE_TOP) {
// We placed the caption using only the table's isize as available
// isize, and we should position it this way as well.
aOrigin.I(aWM) += aInnerMargin.IStart(aWM);
}
break;
}
// block-dir computation
switch (aCaptionSide) {
case NS_STYLE_CAPTION_SIDE_RIGHT:
case NS_STYLE_CAPTION_SIDE_LEFT:
aOrigin.B(aWM) = aInnerMargin.BStart(aWM);
switch (GetCaptionVerticalAlign()) {
case StyleVerticalAlignKeyword::Middle:
aOrigin.B(aWM) = std::max(
0, aInnerMargin.BStart(aWM) +
((aInnerSize.BSize(aWM) - aCaptionSize.BSize(aWM)) / 2));
break;
case StyleVerticalAlignKeyword::Bottom:
aOrigin.B(aWM) =
std::max(0, aInnerMargin.BStart(aWM) + aInnerSize.BSize(aWM) -
aCaptionSize.BSize(aWM));
break;
default:
break;
}
break;
case NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE:
case NS_STYLE_CAPTION_SIDE_BOTTOM:
aOrigin.B(aWM) = aInnerMargin.BStart(aWM) + aInnerSize.BSize(aWM) +
aCaptionMargin.BStart(aWM);
break;
case NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE:
case NS_STYLE_CAPTION_SIDE_TOP:
aOrigin.B(aWM) = aInnerMargin.BStart(aWM) + aCaptionMargin.BStart(aWM);
break;
default:
MOZ_ASSERT_UNREACHABLE("Unknown caption alignment type");
break;
}
return NS_OK;
}
nsresult nsTableWrapperFrame::GetInnerOrigin(
uint32_t aCaptionSide, const LogicalSize& aContainBlockSize,
const LogicalSize& aCaptionSize, const LogicalMargin& aCaptionMargin,
const LogicalSize& aInnerSize, LogicalMargin& aInnerMargin,
LogicalPoint& aOrigin, WritingMode aWM) {
NS_ASSERTION(NS_AUTOMARGIN != aCaptionMargin.IStart(aWM) &&
NS_AUTOMARGIN != aCaptionMargin.IEnd(aWM),
"The computed caption margin is auto?");
NS_ASSERTION(NS_AUTOMARGIN != aInnerMargin.IStart(aWM) &&
NS_AUTOMARGIN != aInnerMargin.IEnd(aWM) &&
NS_AUTOMARGIN != aInnerMargin.BStart(aWM) &&
NS_AUTOMARGIN != aInnerMargin.BEnd(aWM),
"The computed inner margin is auto?");
aOrigin.I(aWM) = aOrigin.B(aWM) = 0;
if ((NS_UNCONSTRAINEDSIZE == aInnerSize.ISize(aWM)) ||
(NS_UNCONSTRAINEDSIZE == aInnerSize.BSize(aWM)) ||
(NS_UNCONSTRAINEDSIZE == aCaptionSize.ISize(aWM)) ||
(NS_UNCONSTRAINEDSIZE == aCaptionSize.BSize(aWM))) {
return NS_OK;
}
nscoord minCapISize = aCaptionSize.ISize(aWM) + aCaptionMargin.IStartEnd(aWM);
// inline-dir computation
switch (aCaptionSide) {
case NS_STYLE_CAPTION_SIDE_LEFT:
case NS_STYLE_CAPTION_SIDE_RIGHT:
if (aWM.IsBidiLTR() == (aCaptionSide == NS_STYLE_CAPTION_SIDE_LEFT)) {
if (aInnerMargin.IStart(aWM) < minCapISize) {
// shift the inner table to get some place for the caption
aInnerMargin.IEnd(aWM) += aInnerMargin.IStart(aWM) - minCapISize;
aInnerMargin.IEnd(aWM) = std::max(0, aInnerMargin.IEnd(aWM));
aInnerMargin.IStart(aWM) = minCapISize;
}
}
aOrigin.I(aWM) = aInnerMargin.IStart(aWM);
break;
default:
NS_ASSERTION(aCaptionSide == NS_STYLE_CAPTION_SIDE_TOP ||
aCaptionSide == NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE ||
aCaptionSide == NS_STYLE_CAPTION_SIDE_BOTTOM ||
aCaptionSide == NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE ||
aCaptionSide == NO_SIDE,
"unexpected caption side");
aOrigin.I(aWM) = aInnerMargin.IStart(aWM);
break;
}
// block-dir computation
switch (aCaptionSide) {
case NS_STYLE_CAPTION_SIDE_BOTTOM:
case NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE:
aOrigin.B(aWM) = aInnerMargin.BStart(aWM);
break;
case NS_STYLE_CAPTION_SIDE_LEFT:
case NS_STYLE_CAPTION_SIDE_RIGHT:
aOrigin.B(aWM) = aInnerMargin.BStart(aWM);
switch (GetCaptionVerticalAlign()) {
case StyleVerticalAlignKeyword::Middle:
aOrigin.B(aWM) =
std::max(aInnerMargin.BStart(aWM),
(aCaptionSize.BSize(aWM) - aInnerSize.BSize(aWM)) / 2);
break;
case StyleVerticalAlignKeyword::Bottom:
aOrigin.B(aWM) =
std::max(aInnerMargin.BStart(aWM),
aCaptionSize.BSize(aWM) - aInnerSize.BSize(aWM));
break;
default:
break;
}
break;
case NO_SIDE:
case NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE:
case NS_STYLE_CAPTION_SIDE_TOP:
aOrigin.B(aWM) = aInnerMargin.BStart(aWM) + aCaptionSize.BSize(aWM) +
aCaptionMargin.BStartEnd(aWM);
break;
default:
MOZ_ASSERT_UNREACHABLE("Unknown caption alignment type");
break;
}
return NS_OK;
}
void nsTableWrapperFrame::OuterBeginReflowChild(nsPresContext* aPresContext,
nsIFrame* aChildFrame,
const ReflowInput& aOuterRI,
Maybe<ReflowInput>& aChildRI,
nscoord aAvailISize) {
// work around pixel rounding errors, round down to ensure we don't exceed the
// avail height in
WritingMode wm = aChildFrame->GetWritingMode();
LogicalSize outerSize = aOuterRI.AvailableSize(wm);
nscoord availBSize = outerSize.BSize(wm);
if (NS_UNCONSTRAINEDSIZE != availBSize) {
if (mCaptionFrames.FirstChild() == aChildFrame) {
availBSize = NS_UNCONSTRAINEDSIZE;
} else {
LogicalMargin margin(wm);
GetChildMargin(aPresContext, aOuterRI, aChildFrame, outerSize.ISize(wm),
margin);
NS_ASSERTION(NS_UNCONSTRAINEDSIZE != margin.BStart(wm),
"No unconstrainedsize arithmetic, please");
availBSize -= margin.BStart(wm);
NS_ASSERTION(NS_UNCONSTRAINEDSIZE != margin.BEnd(wm),
"No unconstrainedsize arithmetic, please");
availBSize -= margin.BEnd(wm);
}
}
LogicalSize availSize(wm, aAvailISize, availBSize);
// create and init the child reflow input, using passed-in Maybe<>,
// so that caller can use it after we return.
aChildRI.emplace(aPresContext, aOuterRI, aChildFrame, availSize, Nothing(),
ReflowInput::CALLER_WILL_INIT);
InitChildReflowInput(*aPresContext, aOuterRI, *aChildRI);
// see if we need to reset top-of-page due to a caption
if (aChildRI->mFlags.mIsTopOfPage &&
mCaptionFrames.FirstChild() == aChildFrame) {
uint8_t captionSide = GetCaptionSide();
if (captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM ||
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE) {
aChildRI->mFlags.mIsTopOfPage = false;
}
}
}
void nsTableWrapperFrame::OuterDoReflowChild(nsPresContext* aPresContext,
nsIFrame* aChildFrame,
const ReflowInput& aChildRI,
ReflowOutput& aMetrics,
nsReflowStatus& aStatus) {
// Using zero as containerSize here because we want consistency between
// the GetLogicalPosition and ReflowChild calls, to avoid unnecessarily
// changing the frame's coordinates; but we don't yet know its final
// position anyway so the actual value is unimportant.
const nsSize zeroCSize;
WritingMode wm = aChildRI.GetWritingMode();
// Use the current position as a best guess for placement.
LogicalPoint childPt = aChildFrame->GetLogicalPosition(wm, zeroCSize);
ReflowChildFlags flags = ReflowChildFlags::NoMoveFrame;
// We don't want to delete our next-in-flow's child if it's an inner table
// frame, because table wrapper frames always assume that their inner table
// frames don't go away. If a table wrapper frame is removed because it is
// a next-in-flow of an already complete table wrapper frame, then it will
// take care of removing it's inner table frame.
if (aChildFrame == InnerTableFrame()) {
flags |= ReflowChildFlags::NoDeleteNextInFlowChild;
}
ReflowChild(aChildFrame, aPresContext, aMetrics, aChildRI, wm, childPt,
zeroCSize, flags, aStatus);
}
void nsTableWrapperFrame::UpdateOverflowAreas(ReflowOutput& aMet) {
aMet.SetOverflowAreasToDesiredBounds();
ConsiderChildOverflow(aMet.mOverflowAreas, InnerTableFrame());
if (mCaptionFrames.NotEmpty()) {
ConsiderChildOverflow(aMet.mOverflowAreas, mCaptionFrames.FirstChild());
}
}
void nsTableWrapperFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aOuterRI,
nsReflowStatus& aStatus) {
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsTableWrapperFrame");
DISPLAY_REFLOW(aPresContext, this, aOuterRI, aDesiredSize, aStatus);
MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
// Initialize out parameters
aDesiredSize.ClearSize();
if (!HasAnyStateBits(NS_FRAME_FIRST_REFLOW)) {
// Set up our kids. They're already present, on an overflow list,
// or there are none so we'll create them now
MoveOverflowToChildList();
}
Maybe<ReflowInput> captionRI;
Maybe<ReflowInput> innerRI;
nsRect origCaptionRect;
nsRect origCaptionInkOverflow;
bool captionFirstReflow = false;
if (mCaptionFrames.NotEmpty()) {
origCaptionRect = mCaptionFrames.FirstChild()->GetRect();
origCaptionInkOverflow = mCaptionFrames.FirstChild()->InkOverflowRect();
captionFirstReflow =
mCaptionFrames.FirstChild()->HasAnyStateBits(NS_FRAME_FIRST_REFLOW);
}
// ComputeAutoSize has to match this logic.
WritingMode wm = aOuterRI.GetWritingMode();
uint8_t captionSide = GetCaptionSide();
WritingMode captionWM = wm; // will be changed below if necessary
if (captionSide == NO_SIDE) {
// We don't have a caption.
OuterBeginReflowChild(aPresContext, InnerTableFrame(), aOuterRI, innerRI,
aOuterRI.ComputedSize(wm).ISize(wm));
} else if (captionSide == NS_STYLE_CAPTION_SIDE_LEFT ||
captionSide == NS_STYLE_CAPTION_SIDE_RIGHT) {
// ComputeAutoSize takes care of making side captions small. Compute
// the caption's size first, and tell the table to fit in what's left.
OuterBeginReflowChild(aPresContext, mCaptionFrames.FirstChild(), aOuterRI,
captionRI, aOuterRI.ComputedSize(wm).ISize(wm));
captionWM = captionRI->GetWritingMode();
nscoord innerAvailISize =
aOuterRI.ComputedSize(wm).ISize(wm) -
captionRI->ComputedSizeWithMarginBorderPadding(wm).ISize(wm);
OuterBeginReflowChild(aPresContext, InnerTableFrame(), aOuterRI, innerRI,
innerAvailISize);
} else if (captionSide == NS_STYLE_CAPTION_SIDE_TOP ||
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM) {
// Compute the table's size first, and then prevent the caption from
// being larger in the inline dir unless it has to be.
//
// Note that CSS 2.1 (but not 2.0) says:
// The width of the anonymous box is the border-edge width of the
// table box inside it
// We don't actually make our anonymous box that isize (if we did,
// it would break 'auto' margins), but this effectively does that.
OuterBeginReflowChild(aPresContext, InnerTableFrame(), aOuterRI, innerRI,
aOuterRI.ComputedSize(wm).ISize(wm));
// It's good that CSS 2.1 says not to include margins, since we
// can't, since they already been converted so they exactly
// fill the available isize (ignoring the margin on one side if
// neither are auto). (We take advantage of that later when we call
// GetCaptionOrigin, though.)
nscoord innerBorderISize =
innerRI->ComputedSizeWithBorderPadding(wm).ISize(wm);
OuterBeginReflowChild(aPresContext, mCaptionFrames.FirstChild(), aOuterRI,
captionRI, innerBorderISize);
captionWM = captionRI->GetWritingMode();
} else {
NS_ASSERTION(captionSide == NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE ||
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE,
"unexpected caption-side");
// Size the table and the caption independently.
captionWM = mCaptionFrames.FirstChild()->GetWritingMode();
OuterBeginReflowChild(aPresContext, mCaptionFrames.FirstChild(), aOuterRI,
captionRI,
aOuterRI.ComputedSize(captionWM).ISize(captionWM));
OuterBeginReflowChild(aPresContext, InnerTableFrame(), aOuterRI, innerRI,
aOuterRI.ComputedSize(wm).ISize(wm));
}
// First reflow the caption.
Maybe<ReflowOutput> captionMet;
LogicalSize captionSize(wm);
LogicalMargin captionMargin(wm);
if (mCaptionFrames.NotEmpty()) {
captionMet.emplace(wm);
nsReflowStatus capStatus; // don't let the caption cause incomplete
OuterDoReflowChild(aPresContext, mCaptionFrames.FirstChild(), *captionRI,
*captionMet, capStatus);
captionSize.ISize(wm) = captionMet->ISize(wm);
captionSize.BSize(wm) = captionMet->BSize(wm);
captionMargin = captionRI->ComputedLogicalMargin().ConvertTo(wm, captionWM);
// Now that we know the bsize of the caption, reduce the available bsize
// for the table frame if we are bsize constrained and the caption is above
// or below the inner table. Also reduce the CB size that we store for
// our children in case we're a grid item, by the same amount.
LogicalSize* cbSize = GetProperty(GridItemCBSizeProperty());
if (NS_UNCONSTRAINEDSIZE != aOuterRI.AvailableBSize() || cbSize) {
nscoord captionBSize = 0;
nscoord captionISize = 0;
switch (captionSide) {
case NS_STYLE_CAPTION_SIDE_TOP:
case NS_STYLE_CAPTION_SIDE_BOTTOM:
case NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE:
case NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE:
captionBSize = captionSize.BSize(wm) + captionMargin.BStartEnd(wm);
break;
case NS_STYLE_CAPTION_SIDE_LEFT:
case NS_STYLE_CAPTION_SIDE_RIGHT:
captionISize = captionSize.ISize(wm) + captionMargin.IStartEnd(wm);
break;
}
if (NS_UNCONSTRAINEDSIZE != aOuterRI.AvailableBSize()) {
innerRI->AvailableBSize() =
std::max(0, innerRI->AvailableBSize() - captionBSize);
}
if (cbSize) {
// Shrink the CB size by the size reserved for the caption.
LogicalSize oldCBSize = *cbSize;
cbSize->ISize(wm) = std::max(0, cbSize->ISize(wm) - captionISize);
cbSize->BSize(wm) = std::max(0, cbSize->BSize(wm) - captionBSize);
if (oldCBSize != *cbSize) {
// Reset the inner table's ReflowInput to stretch it to the new size.
innerRI.reset();
OuterBeginReflowChild(aPresContext, InnerTableFrame(), aOuterRI,
innerRI, aOuterRI.ComputedSize(wm).ISize(wm));
}
}
}
}
// Then, now that we know how much to reduce the isize of the inner
// table to account for side captions, reflow the inner table.
ReflowOutput innerMet(innerRI->GetWritingMode());
OuterDoReflowChild(aPresContext, InnerTableFrame(), *innerRI, innerMet,
aStatus);
LogicalSize innerSize(wm, innerMet.ISize(wm), innerMet.BSize(wm));
LogicalMargin innerMargin = innerRI->ComputedLogicalMargin();
LogicalSize containSize(wm, GetContainingBlockSize(aOuterRI));
// Now that we've reflowed both we can place them.
// XXXldb Most of the input variables here are now uninitialized!
// XXX Need to recompute inner table's auto margins for the case of side
// captions. (Caption's are broken too, but that should be fixed earlier.)
// Compute the desiredSize so that we can use it as the containerSize
// for the FinishReflowChild calls below.
LogicalSize desiredSize(wm);
SetDesiredSize(captionSide, innerSize, captionSize, innerMargin,
captionMargin, desiredSize.ISize(wm), desiredSize.BSize(wm),
wm);
aDesiredSize.SetSize(wm, desiredSize);
nsSize containerSize = aDesiredSize.PhysicalSize();
// XXX It's possible for this to be NS_UNCONSTRAINEDSIZE, which will result
// in assertions from FinishReflowChild.
if (mCaptionFrames.NotEmpty()) {
LogicalPoint captionOrigin(wm);
GetCaptionOrigin(captionSide, containSize, innerSize, innerMargin,
captionSize, captionMargin, captionOrigin, wm);
FinishReflowChild(mCaptionFrames.FirstChild(), aPresContext, *captionMet,
captionRI.ptr(), wm, captionOrigin, containerSize,
ReflowChildFlags::Default);
captionRI.reset();
}
// XXX If the bsize is constrained then we need to check whether
// everything still fits...
LogicalPoint innerOrigin(wm);
GetInnerOrigin(captionSide, containSize, captionSize, captionMargin,
innerSize, innerMargin, innerOrigin, wm);
FinishReflowChild(InnerTableFrame(), aPresContext, innerMet, innerRI.ptr(),
wm, innerOrigin, containerSize, ReflowChildFlags::Default);
innerRI.reset();
if (mCaptionFrames.NotEmpty()) {
nsTableFrame::InvalidateTableFrame(mCaptionFrames.FirstChild(),
origCaptionRect, origCaptionInkOverflow,
captionFirstReflow);
}
UpdateOverflowAreas(aDesiredSize);
if (GetPrevInFlow()) {
ReflowOverflowContainerChildren(aPresContext, aOuterRI,
aDesiredSize.mOverflowAreas,
ReflowChildFlags::Default, aStatus);
}
FinishReflowWithAbsoluteFrames(aPresContext, aDesiredSize, aOuterRI, aStatus);
// Return our desired rect
NS_FRAME_SET_TRUNCATION(aStatus, aOuterRI, aDesiredSize);
}
/* ----- global methods ----- */
nsIContent* nsTableWrapperFrame::GetCellAt(uint32_t aRowIdx,
uint32_t aColIdx) const {
nsTableCellMap* cellMap = InnerTableFrame()->GetCellMap();
if (!cellMap) {
return nullptr;
}
nsTableCellFrame* cell = cellMap->GetCellInfoAt(aRowIdx, aColIdx);
if (!cell) {
return nullptr;
}
return cell->GetContent();
}
nsTableWrapperFrame* NS_NewTableWrapperFrame(PresShell* aPresShell,
ComputedStyle* aStyle) {
return new (aPresShell)
nsTableWrapperFrame(aStyle, aPresShell->GetPresContext());
}
NS_IMPL_FRAMEARENA_HELPERS(nsTableWrapperFrame)
#ifdef DEBUG_FRAME_DUMP
nsresult nsTableWrapperFrame::GetFrameName(nsAString& aResult) const {
return MakeFrameName(u"TableWrapper"_ns, aResult);
}
#endif
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