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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;
/* 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();
}
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(), IntrinsicISizeType::MinISize);
DISPLAY_MIN_INLINE_SIZE(this, iSize);
if (mCaptionFrames.NotEmpty()) {
nscoord capISize = nsLayoutUtils::IntrinsicForContainer(
aRenderingContext, mCaptionFrames.FirstChild(),
IntrinsicISizeType::MinISize);
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(), IntrinsicISizeType::PrefISize);
if (Maybe<StyleCaptionSide> captionSide = GetCaptionSide()) {
switch (*captionSide) {
case StyleCaptionSide::Left:
case StyleCaptionSide::Right: {
nscoord capMin = nsLayoutUtils::IntrinsicForContainer(
aRenderingContext, mCaptionFrames.FirstChild(),
IntrinsicISizeType::MinISize);
maxISize += capMin;
} break;
default: {
IntrinsicISizeType iwt;
if (*captionSide == StyleCaptionSide::Top ||
*captionSide == StyleCaptionSide::Bottom) {
// Don't let the caption's pref isize expand the table's pref
// isize.
iwt = IntrinsicISizeType::MinISize;
} else {
MOZ_ASSERT(*captionSide == StyleCaptionSide::TopOutside ||
*captionSide == StyleCaptionSide::BottomOutside,
"unexpected caption side");
iwt = IntrinsicISizeType::PrefISize;
}
nscoord capPref = nsLayoutUtils::IntrinsicForContainer(
aRenderingContext, mCaptionFrames.FirstChild(), iwt);
maxISize = std::max(maxISize, capPref);
} break;
}
}
return maxISize;
}
LogicalSize nsTableWrapperFrame::InnerTableShrinkWrapSize(
gfxContext* aRenderingContext, nsTableFrame* aTableFrame, WritingMode aWM,
const LogicalSize& aCBSize, nscoord aAvailableISize,
const StyleSizeOverrides& aSizeOverrides, ComputeSizeFlags aFlags) const {
MOZ_ASSERT(InnerTableFrame() == aTableFrame);
AutoMaybeDisableFontInflation an(aTableFrame);
Maybe<LogicalMargin> collapseBorder;
Maybe<LogicalMargin> collapsePadding;
aTableFrame->GetCollapsedBorderPadding(collapseBorder, collapsePadding);
SizeComputationInput input(aTableFrame, aRenderingContext, aWM,
aCBSize.ISize(aWM), collapseBorder,
collapsePadding);
LogicalSize marginSize(aWM); // Inner table doesn't have any margin
LogicalSize bpSize = input.ComputedLogicalBorderPadding(aWM).Size(aWM);
// Note that we pass an empty caption-area here (rather than the caption's
// actual size). This is fine because:
//
// 1) nsTableWrapperFrame::ComputeSize() only uses the size returned by this
// method (indirectly via calling nsTableWrapperFrame::ComputeAutoSize())
// if it get a aSizeOverrides arg containing any size overrides with
// mApplyOverridesVerbatim=true. The aSizeOverrides arg is passed to this
// method without any modifications.
//
// 2) With 1), that means the aSizeOverrides passing into this method should
// be applied to the inner table directly, so we don't need to subtract
// caption-area when preparing innerOverrides for
// nsTableFrame::ComputeSize().
const LogicalSize areaOccupiedByCaption(aWM);
StyleSizeOverrides innerOverrides = ComputeSizeOverridesForInnerTable(
aTableFrame, aSizeOverrides, bpSize, areaOccupiedByCaption);
auto size =
aTableFrame
->ComputeSize(aRenderingContext, aWM, aCBSize, aAvailableISize,
marginSize, bpSize, innerOverrides, aFlags)
.mLogicalSize;
size.ISize(aWM) += bpSize.ISize(aWM);
if (size.BSize(aWM) != NS_UNCONSTRAINEDSIZE) {
size.BSize(aWM) += bpSize.BSize(aWM);
}
return size;
}
LogicalSize nsTableWrapperFrame::CaptionShrinkWrapSize(
gfxContext* aRenderingContext, nsIFrame* aCaptionFrame, WritingMode aWM,
const LogicalSize& aCBSize, nscoord aAvailableISize,
ComputeSizeFlags aFlags) const {
MOZ_ASSERT(aCaptionFrame == mCaptionFrames.FirstChild());
AutoMaybeDisableFontInflation an(aCaptionFrame);
SizeComputationInput input(aCaptionFrame, aRenderingContext, aWM,
aCBSize.ISize(aWM));
LogicalSize marginSize = input.ComputedLogicalMargin(aWM).Size(aWM);
LogicalSize bpSize = input.ComputedLogicalBorderPadding(aWM).Size(aWM);
auto size = aCaptionFrame
->ComputeSize(aRenderingContext, aWM, aCBSize,
aAvailableISize, marginSize, bpSize, {}, aFlags)
.mLogicalSize;
size.ISize(aWM) += (marginSize.ISize(aWM) + bpSize.ISize(aWM));
if (size.BSize(aWM) != NS_UNCONSTRAINEDSIZE) {
size.BSize(aWM) += (marginSize.BSize(aWM) + bpSize.BSize(aWM));
}
return size;
}
StyleSize nsTableWrapperFrame::ReduceStyleSizeBy(
const StyleSize& aStyleSize, const nscoord aAmountToReduce) const {
MOZ_ASSERT(aStyleSize.ConvertsToLength(), "Only handles 'Length' StyleSize!");
const nscoord size = std::max(0, aStyleSize.ToLength() - aAmountToReduce);
return StyleSize::LengthPercentage(LengthPercentage::FromAppUnits(size));
}
StyleSizeOverrides nsTableWrapperFrame::ComputeSizeOverridesForInnerTable(
const nsTableFrame* aTableFrame,
const StyleSizeOverrides& aWrapperSizeOverrides,
const LogicalSize& aBorderPadding,
const LogicalSize& aAreaOccupiedByCaption) const {
if (aWrapperSizeOverrides.mApplyOverridesVerbatim ||
!aWrapperSizeOverrides.HasAnyLengthOverrides()) {
// We are asked to apply the size overrides directly to the inner table, or
// there's no 'Length' size overrides. No need to tweak the size overrides.
return aWrapperSizeOverrides;
}
const auto wm = aTableFrame->GetWritingMode();
LogicalSize areaOccupied = aAreaOccupiedByCaption;
if (aTableFrame->StylePosition()->mBoxSizing == StyleBoxSizing::Content) {
// If the inner table frame has 'box-sizing: content', enlarge the occupied
// area by adding border & padding because they should also be subtracted
// from the size overrides.
areaOccupied += aBorderPadding;
}
StyleSizeOverrides innerSizeOverrides;
const auto& wrapperISize = aWrapperSizeOverrides.mStyleISize;
if (wrapperISize) {
MOZ_ASSERT(!wrapperISize->HasPercent(),
"Table doesn't support size overrides containing percentages!");
innerSizeOverrides.mStyleISize.emplace(
wrapperISize->ConvertsToLength()
? ReduceStyleSizeBy(*wrapperISize, areaOccupied.ISize(wm))
: *wrapperISize);
}
const auto& wrapperBSize = aWrapperSizeOverrides.mStyleBSize;
if (wrapperBSize) {
MOZ_ASSERT(!wrapperBSize->HasPercent(),
"Table doesn't support size overrides containing percentages!");
innerSizeOverrides.mStyleBSize.emplace(
wrapperBSize->ConvertsToLength()
? ReduceStyleSizeBy(*wrapperBSize, areaOccupied.BSize(wm))
: *wrapperBSize);
}
return innerSizeOverrides;
}
/* virtual */
nsIFrame::SizeComputationResult nsTableWrapperFrame::ComputeSize(
gfxContext* aRenderingContext, WritingMode aWM, const LogicalSize& aCBSize,
nscoord aAvailableISize, const LogicalSize& aMargin,
const LogicalSize& aBorderPadding, const StyleSizeOverrides& aSizeOverrides,
ComputeSizeFlags aFlags) {
auto result = nsContainerFrame::ComputeSize(
aRenderingContext, aWM, aCBSize, aAvailableISize, aMargin, aBorderPadding,
aSizeOverrides, aFlags);
if (aSizeOverrides.mApplyOverridesVerbatim &&
aSizeOverrides.HasAnyOverrides()) {
// We are asked to apply the size overrides directly to the inner table, but
// we still want ourselves to remain 'auto'-sized and shrink-wrapping our
// children's sizes. (Table wrapper frames always have 'auto' inline-size
// and block-size, since we don't inherit those properties from inner table,
// and authors can't target them with styling.)
auto size =
ComputeAutoSize(aRenderingContext, aWM, aCBSize, aAvailableISize,
aMargin, aBorderPadding, aSizeOverrides, aFlags);
result.mLogicalSize = size;
}
return result;
}
/* virtual */
LogicalSize nsTableWrapperFrame::ComputeAutoSize(
gfxContext* aRenderingContext, WritingMode aWM, const LogicalSize& aCBSize,
nscoord aAvailableISize, const LogicalSize& aMargin,
const LogicalSize& aBorderPadding, const StyleSizeOverrides& aSizeOverrides,
ComputeSizeFlags aFlags) {
nscoord kidAvailableISize = aAvailableISize - aMargin.ISize(aWM);
NS_ASSERTION(aBorderPadding.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.
// Shrink-wrap aChildFrame by default, except if we're a stretched grid item.
ComputeSizeFlags flags(ComputeSizeFlag::ShrinkWrap);
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 -= ComputeSizeFlag::ShrinkWrap;
}
}
// Match the availableISize logic in Reflow.
Maybe<StyleCaptionSide> captionSide = GetCaptionSide();
// The result.ISize() is unconditionally set to a meaningful value in the
// logic that follows, but the unconstrained BSize() value might be used for
// cases where either BSize is indeed unconstrained).
LogicalSize result(aWM, 0, NS_UNCONSTRAINEDSIZE);
if (!captionSide) {
result = InnerTableShrinkWrapSize(aRenderingContext, InnerTableFrame(), aWM,
aCBSize, kidAvailableISize,
aSizeOverrides, flags);
} else if (*captionSide == StyleCaptionSide::Left ||
*captionSide == StyleCaptionSide::Right) {
const LogicalSize captionSize =
CaptionShrinkWrapSize(aRenderingContext, mCaptionFrames.FirstChild(),
aWM, aCBSize, kidAvailableISize, flags);
const LogicalSize innerTableSize = InnerTableShrinkWrapSize(
aRenderingContext, InnerTableFrame(), aWM, aCBSize,
kidAvailableISize - captionSize.ISize(aWM), aSizeOverrides, flags);
result.ISize(aWM) = captionSize.ISize(aWM) + innerTableSize.ISize(aWM);
if (captionSize.BSize(aWM) != NS_UNCONSTRAINEDSIZE &&
innerTableSize.BSize(aWM) != NS_UNCONSTRAINEDSIZE) {
result.BSize(aWM) =
std::max(captionSize.BSize(aWM), innerTableSize.BSize(aWM));
}
} else if (*captionSide == StyleCaptionSide::Top ||
*captionSide == StyleCaptionSide::Bottom) {
const LogicalSize innerTableSize = InnerTableShrinkWrapSize(
aRenderingContext, InnerTableFrame(), aWM, aCBSize, kidAvailableISize,
aSizeOverrides, flags);
const LogicalSize captionSize =
CaptionShrinkWrapSize(aRenderingContext, mCaptionFrames.FirstChild(),
aWM, aCBSize, innerTableSize.ISize(aWM), flags);
result.ISize(aWM) =
std::max(innerTableSize.ISize(aWM), captionSize.ISize(aWM));
if (innerTableSize.BSize(aWM) != NS_UNCONSTRAINEDSIZE &&
captionSize.BSize(aWM) != NS_UNCONSTRAINEDSIZE) {
result.BSize(aWM) = innerTableSize.BSize(aWM) + captionSize.BSize(aWM);
}
} else {
MOZ_ASSERT(*captionSide == StyleCaptionSide::TopOutside ||
*captionSide == StyleCaptionSide::BottomOutside,
"unexpected caption-side");
const LogicalSize innerTableSize = InnerTableShrinkWrapSize(
aRenderingContext, InnerTableFrame(), aWM, aCBSize, kidAvailableISize,
aSizeOverrides, flags);
const LogicalSize captionSize =
CaptionShrinkWrapSize(aRenderingContext, mCaptionFrames.FirstChild(),
aWM, aCBSize, kidAvailableISize, flags);
result.ISize(aWM) =
std::max(innerTableSize.ISize(aWM), captionSize.ISize(aWM));
if (innerTableSize.BSize(aWM) != NS_UNCONSTRAINEDSIZE &&
captionSize.BSize(aWM) != NS_UNCONSTRAINEDSIZE) {
result.BSize(aWM) = innerTableSize.BSize(aWM) + captionSize.BSize(aWM);
}
}
return result;
}
Maybe<StyleCaptionSide> nsTableWrapperFrame::GetCaptionSide() const {
if (mCaptionFrames.IsEmpty()) {
return Nothing();
}
return Some(mCaptionFrames.FirstChild()->StyleTableBorder()->mCaptionSide);
}
StyleVerticalAlignKeyword nsTableWrapperFrame::GetCaptionVerticalAlign() const {
const auto& va = mCaptionFrames.FirstChild()->StyleDisplay()->mVerticalAlign;
return va.IsKeyword() ? va.AsKeyword() : StyleVerticalAlignKeyword::Top;
}
nscoord nsTableWrapperFrame::ComputeFinalBSize(
const MaybeCaptionSide& aCaptionSide, const LogicalSize& aInnerSize,
const LogicalSize& aCaptionSize, const LogicalMargin& aCaptionMargin,
const WritingMode aWM) const {
nscoord bSize = aInnerSize.BSize(aWM);
// compute the overall block-size
if (aCaptionSide) {
switch (*aCaptionSide) {
case StyleCaptionSide::Top:
case StyleCaptionSide::TopOutside:
case StyleCaptionSide::Bottom:
case StyleCaptionSide::BottomOutside:
bSize = aInnerSize.BSize(aWM) +
std::max(
0, aCaptionSize.BSize(aWM) + aCaptionMargin.BStartEnd(aWM));
break;
case StyleCaptionSide::Left:
case StyleCaptionSide::Right:
bSize = std::max(aInnerSize.BSize(aWM),
aCaptionSize.BSize(aWM) + aCaptionMargin.BEnd(aWM));
break;
}
}
// negative sizes can upset overflow-area code
return std::max(bSize, 0);
}
nsresult nsTableWrapperFrame::GetCaptionOrigin(
StyleCaptionSide aCaptionSide, const LogicalSize& aContainBlockSize,
const LogicalSize& aInnerSize, 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 StyleCaptionSide::Top:
case StyleCaptionSide::TopOutside:
case StyleCaptionSide::Bottom:
case StyleCaptionSide::BottomOutside:
aOrigin.I(aWM) = aCaptionMargin.IStart(aWM);
break;
case StyleCaptionSide::Left:
case StyleCaptionSide::Right:
aOrigin.I(aWM) = aCaptionMargin.IStart(aWM);
if (aWM.IsBidiLTR() == (aCaptionSide == StyleCaptionSide::Right)) {
aOrigin.I(aWM) += aInnerSize.ISize(aWM);
}
break;
}
// block-dir computation
switch (aCaptionSide) {
case StyleCaptionSide::Right:
case StyleCaptionSide::Left:
aOrigin.B(aWM) = 0;
switch (GetCaptionVerticalAlign()) {
case StyleVerticalAlignKeyword::Middle:
aOrigin.B(aWM) = std::max(
0, (aInnerSize.BSize(aWM) - aCaptionSize.BSize(aWM)) / 2);
break;
case StyleVerticalAlignKeyword::Bottom:
aOrigin.B(aWM) =
std::max(0, aInnerSize.BSize(aWM) - aCaptionSize.BSize(aWM));
break;
default:
break;
}
break;
case StyleCaptionSide::BottomOutside:
case StyleCaptionSide::Bottom:
aOrigin.B(aWM) = aInnerSize.BSize(aWM) + aCaptionMargin.BStart(aWM);
break;
case StyleCaptionSide::TopOutside:
case StyleCaptionSide::Top:
aOrigin.B(aWM) = aCaptionMargin.BStart(aWM);
break;
}
return NS_OK;
}
nsresult nsTableWrapperFrame::GetInnerOrigin(
const MaybeCaptionSide& aCaptionSide, const LogicalSize& aContainBlockSize,
const LogicalSize& aCaptionSize, const LogicalMargin& aCaptionMargin,
const LogicalSize& aInnerSize, LogicalPoint& aOrigin, WritingMode aWM) {
NS_ASSERTION(NS_AUTOMARGIN != aCaptionMargin.IStart(aWM) &&
NS_AUTOMARGIN != aCaptionMargin.IEnd(aWM),
"The computed caption 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
if (aCaptionSide && IsSideCaption(*aCaptionSide)) {
aOrigin.I(aWM) =
(aWM.IsBidiLTR() == (*aCaptionSide == StyleCaptionSide::Left))
? minCapISize
: 0;
}
// block-dir computation
if (aCaptionSide) {
switch (*aCaptionSide) {
case StyleCaptionSide::Bottom:
case StyleCaptionSide::BottomOutside:
// Leave at zero.
break;
case StyleCaptionSide::Left:
case StyleCaptionSide::Right:
switch (GetCaptionVerticalAlign()) {
case StyleVerticalAlignKeyword::Middle:
aOrigin.B(aWM) = std::max(
0, (aCaptionSize.BSize(aWM) - aInnerSize.BSize(aWM)) / 2);
break;
case StyleVerticalAlignKeyword::Bottom:
aOrigin.B(aWM) =
std::max(0, aCaptionSize.BSize(aWM) - aInnerSize.BSize(aWM));
break;
default:
// Leave at zero.
break;
}
break;
case StyleCaptionSide::TopOutside:
case StyleCaptionSide::Top:
aOrigin.B(aWM) =
aCaptionSize.BSize(aWM) + aCaptionMargin.BStartEnd(aWM);
break;
}
}
return NS_OK;
}
LogicalSize nsTableWrapperFrame::GetAreaOccupiedByCaption(
StyleCaptionSide aCaptionSide,
const mozilla::LogicalSize& aCaptionMarginBoxSize) const {
const WritingMode wm = GetWritingMode();
LogicalSize area(wm);
switch (aCaptionSide) {
case StyleCaptionSide::Top:
case StyleCaptionSide::Bottom:
case StyleCaptionSide::TopOutside:
case StyleCaptionSide::BottomOutside:
area.BSize(wm) = aCaptionMarginBoxSize.BSize(wm);
break;
case StyleCaptionSide::Left:
case StyleCaptionSide::Right:
area.ISize(wm) = aCaptionMarginBoxSize.ISize(wm);
break;
}
return area;
}
void nsTableWrapperFrame::CreateReflowInputForInnerTable(
nsPresContext* aPresContext, nsTableFrame* aTableFrame,
const ReflowInput& aOuterRI, Maybe<ReflowInput>& aChildRI,
const nscoord aAvailISize,
const Maybe<LogicalSize>& aAreaOccupiedByCaption) const {
MOZ_ASSERT(InnerTableFrame() == aTableFrame);
const WritingMode wm = aTableFrame->GetWritingMode();
const LogicalSize areaOccupiedByCaption =
aAreaOccupiedByCaption ? *aAreaOccupiedByCaption : LogicalSize(wm);
// If we have a caption occupied our content-box area, reduce the available
// block-size by the amount.
nscoord availBSize = aOuterRI.AvailableBSize();
if (availBSize != NS_UNCONSTRAINEDSIZE) {
availBSize = std::max(0, availBSize - areaOccupiedByCaption.BSize(wm));
}
const LogicalSize availSize(wm, aAvailISize, availBSize);
// For inner table frames, the containing block is the same as for the outer
// table frame.
Maybe<LogicalSize> cbSize = Some(aOuterRI.mContainingBlockSize);
// However, if we are a grid item, the CB size needs to subtract our margins
// and the area occupied by the caption.
//
// 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 (IsGridItem()) {
const LogicalMargin margin = aOuterRI.ComputedLogicalMargin(wm);
cbSize->ISize(wm) = std::max(0, cbSize->ISize(wm) - margin.IStartEnd(wm) -
areaOccupiedByCaption.ISize(wm));
if (cbSize->BSize(wm) != NS_UNCONSTRAINEDSIZE) {
cbSize->BSize(wm) = std::max(0, cbSize->BSize(wm) - margin.BStartEnd(wm) -
areaOccupiedByCaption.BSize(wm));
}
}
if (!aTableFrame->IsBorderCollapse() &&
!aOuterRI.mStyleSizeOverrides.HasAnyOverrides()) {
// We are not border-collapsed and not given any size overrides. It's
// sufficient to call the standard ReflowInput constructor.
aChildRI.emplace(aPresContext, aOuterRI, aTableFrame, availSize, cbSize);
return;
}
Maybe<LogicalMargin> borderPadding;
Maybe<LogicalMargin> padding;
{
// Compute inner table frame's border & padding because we may need to
// reduce the size for inner table's size overrides. We won't waste time if
// they are not used, because we can use them directly by passing them into
// ReflowInput::Init().
Maybe<LogicalMargin> collapseBorder;
Maybe<LogicalMargin> collapsePadding;
aTableFrame->GetCollapsedBorderPadding(collapseBorder, collapsePadding);
SizeComputationInput input(aTableFrame, aOuterRI.mRenderingContext, wm,
cbSize->ISize(wm), collapseBorder,
collapsePadding);
borderPadding.emplace(input.ComputedLogicalBorderPadding(wm));
padding.emplace(input.ComputedLogicalPadding(wm));
}
StyleSizeOverrides innerOverrides = ComputeSizeOverridesForInnerTable(
aTableFrame, aOuterRI.mStyleSizeOverrides, borderPadding->Size(wm),
areaOccupiedByCaption);
aChildRI.emplace(aPresContext, aOuterRI, aTableFrame, availSize, Nothing(),
ReflowInput::InitFlag::CallerWillInit, innerOverrides);
aChildRI->Init(aPresContext, cbSize, Some(*borderPadding - *padding),
padding);
}
void nsTableWrapperFrame::CreateReflowInputForCaption(
nsPresContext* aPresContext, nsIFrame* aCaptionFrame,
const ReflowInput& aOuterRI, Maybe<ReflowInput>& aChildRI,
const nscoord aAvailISize) const {
MOZ_ASSERT(aCaptionFrame == mCaptionFrames.FirstChild());
const WritingMode wm = aCaptionFrame->GetWritingMode();
// Use unconstrained available block-size so that the caption is always
// fully-complete.
const LogicalSize availSize(wm, aAvailISize, NS_UNCONSTRAINEDSIZE);
aChildRI.emplace(aPresContext, aOuterRI, aCaptionFrame, availSize);
// See if we need to reset mIsTopOfPage flag.
if (aChildRI->mFlags.mIsTopOfPage) {
if (auto captionSide = GetCaptionSide()) {
if (*captionSide == StyleCaptionSide::Bottom ||
*captionSide == StyleCaptionSide::BottomOutside) {
aChildRI->mFlags.mIsTopOfPage = false;
}
}
}
}
void nsTableWrapperFrame::ReflowChild(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;
}
nsContainerFrame::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();
Maybe<StyleCaptionSide> captionSide = GetCaptionSide();
WritingMode captionWM = wm; // will be changed below if necessary
const nscoord contentBoxISize = aOuterRI.ComputedSize(wm).ISize(wm);
MOZ_ASSERT(mCaptionFrames.NotEmpty() == captionSide.isSome());
if (!captionSide) {
// We don't have a caption.
CreateReflowInputForInnerTable(aPresContext, InnerTableFrame(), aOuterRI,
innerRI, contentBoxISize);
} else if (*captionSide == StyleCaptionSide::Left ||
*captionSide == StyleCaptionSide::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.
CreateReflowInputForCaption(aPresContext, mCaptionFrames.FirstChild(),
aOuterRI, captionRI, contentBoxISize);
captionWM = captionRI->GetWritingMode();
nscoord innerAvailISize =
contentBoxISize -
captionRI->ComputedSizeWithMarginBorderPadding(wm).ISize(wm);
CreateReflowInputForInnerTable(aPresContext, InnerTableFrame(), aOuterRI,
innerRI, innerAvailISize);
} else if (*captionSide == StyleCaptionSide::Top ||
*captionSide == StyleCaptionSide::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.
CreateReflowInputForInnerTable(aPresContext, InnerTableFrame(), aOuterRI,
innerRI, contentBoxISize);
// 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);
CreateReflowInputForCaption(aPresContext, mCaptionFrames.FirstChild(),
aOuterRI, captionRI, innerBorderISize);
captionWM = captionRI->GetWritingMode();
} else {
MOZ_ASSERT(*captionSide == StyleCaptionSide::TopOutside ||
*captionSide == StyleCaptionSide::BottomOutside,
"unexpected caption-side");
// Size the table and the caption independently.
captionWM = mCaptionFrames.FirstChild()->GetWritingMode();
CreateReflowInputForCaption(
aPresContext, mCaptionFrames.FirstChild(), aOuterRI, captionRI,
aOuterRI.ComputedSize(captionWM).ISize(captionWM));
CreateReflowInputForInnerTable(aPresContext, InnerTableFrame(), aOuterRI,
innerRI, contentBoxISize);
}
// First reflow the caption.
Maybe<ReflowOutput> captionMet;
LogicalSize captionSize(wm);
LogicalMargin captionMargin(wm);
Maybe<LogicalSize> areaOccupiedByCaption;
if (captionSide) {
captionMet.emplace(wm);
// We intentionally don't merge capStatus into aStatus, since we currently
// can't handle caption continuations, but we probably should.
nsReflowStatus capStatus;
ReflowChild(aPresContext, mCaptionFrames.FirstChild(), *captionRI,
*captionMet, capStatus);
captionSize = captionMet->Size(wm);
captionMargin = captionRI->ComputedLogicalMargin(wm);
areaOccupiedByCaption.emplace(GetAreaOccupiedByCaption(
*captionSide, captionSize + captionMargin.Size(wm)));
if (!areaOccupiedByCaption->IsAllZero()) {
// Reset the inner table's ReflowInput to reduce various sizes because of
// the area occupied by caption.
innerRI.reset();
CreateReflowInputForInnerTable(aPresContext, InnerTableFrame(), aOuterRI,
innerRI, contentBoxISize,
areaOccupiedByCaption);
}
}
// 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());
ReflowChild(aPresContext, InnerTableFrame(), *innerRI, innerMet, aStatus);
LogicalSize innerSize(wm, innerMet.ISize(wm), innerMet.BSize(wm));
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);
// We have zero border and padding, so content-box inline-size is our desired
// border-box inline-size.
desiredSize.ISize(wm) = contentBoxISize;
desiredSize.BSize(wm) =
ComputeFinalBSize(captionSide, innerSize, captionSize, captionMargin, 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.
MOZ_ASSERT(mCaptionFrames.NotEmpty() == captionSide.isSome());
if (mCaptionFrames.NotEmpty()) {
LogicalPoint captionOrigin(wm);
GetCaptionOrigin(*captionSide, containSize, innerSize, 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, 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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