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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 "nsFrameManager.h"
#include "nsTableFrame.h"
#include "nsTableCellFrame.h"
#include "mozilla/ComputedStyle.h"
#include "nsStyleConsts.h"
#include "nsPresContext.h"
#include "nsCSSRendering.h"
#include "nsIContent.h"
#include "prinrval.h"
#include "nsGkAtoms.h"
#include "nsHTMLParts.h"
#include "nsIPresShell.h"
#include "nsIServiceManager.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
{
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, ClassID aID)
: nsContainerFrame(aStyle, aID)
{
}
nsTableWrapperFrame::~nsTableWrapperFrame()
{
}
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) {
// 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(this, aFrameList);
// Reflow the new caption frame. It's already marked dirty, so
// just tell the pres shell.
PresShell()->FrameNeedsReflow(this, nsIPresShell::eTreeChange,
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,
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, nsIPresShell::eTreeChange,
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()->AddStateBits(NS_FRAME_IS_DIRTY);
}
// Remove the frame and destroy it
mCaptionFrames.DestroyFrame(aOldFrame);
PresShell()->FrameNeedsReflow(this, nsIPresShell::eTreeChange,
NS_FRAME_HAS_DIRTY_CHILDREN);
MarkNeedsDisplayItemRebuild();
}
void
nsTableWrapperFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists)
{
// No border, background or outline are painted because they all belong
// to the inner table.
// 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);
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);
}
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.
if (!HasAnyStateBits(NS_FRAME_OUT_OF_FLOW)) {
LogicalSize* cb = GetProperty(GridItemCBSizeProperty());
if (cb) {
cbSize.emplace(*cb);
*cbSize -= aReflowInput.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.ptrOr(nullptr), 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 state to compute margin and padding. Auto margins
// will not be computed at this time.
// create and init the child reflow state
// XXX We really shouldn't construct a reflow state to do this.
WritingMode wm = aOuterRI.GetWritingMode();
LogicalSize availSize(wm, aAvailISize, aOuterRI.AvailableSize(wm).BSize(wm));
ReflowInput childRI(aPresContext, aOuterRI, aChildFrame, availSize,
nullptr, 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;
auto parent = GetParent();
bool isGridItem = parent && parent->IsGridContainerFrame() &&
!HasAnyStateBits(NS_FRAME_OUT_OF_FLOW);
if (MOZ_UNLIKELY(isGridItem) &&
!StyleMargin()->HasInlineAxisAuto(aWM)) {
auto inlineAxisAlignment = aWM.IsOrthogonalTo(parent->GetWritingMode()) ?
StylePosition()->UsedAlignSelf(parent->Style()) :
StylePosition()->UsedJustifySelf(parent->Style());
if (inlineAxisAlignment == NS_STYLE_ALIGN_NORMAL ||
inlineAxisAlignment == NS_STYLE_ALIGN_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
}
}
uint8_t
nsTableWrapperFrame::GetCaptionVerticalAlign()
{
const nsStyleCoord& va =
mCaptionFrames.FirstChild()->StyleDisplay()->mVerticalAlign;
return (va.GetUnit() == eStyleUnit_Enumerated)
? va.GetIntValue()
: NS_STYLE_VERTICAL_ALIGN_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 NS_STYLE_VERTICAL_ALIGN_MIDDLE:
aOrigin.B(aWM) = std::max(0, aInnerMargin.BStart(aWM) +
((aInnerSize.BSize(aWM) -
aCaptionSize.BSize(aWM)) / 2));
break;
case NS_STYLE_VERTICAL_ALIGN_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 NS_STYLE_VERTICAL_ALIGN_MIDDLE:
aOrigin.B(aWM) =
std::max(aInnerMargin.BStart(aWM),
(aCaptionSize.BSize(aWM) - aInnerSize.BSize(aWM)) / 2);
break;
case NS_STYLE_VERTICAL_ALIGN_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 state, using passed-in Maybe<>,
// so that caller can use it after we return.
aChildRI.emplace(aPresContext, aOuterRI, aChildFrame, availSize,
nullptr, 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);
uint32_t flags = NS_FRAME_NO_MOVE_FRAME;
// 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 |= NS_FRAME_NO_DELETE_NEXT_IN_FLOW_CHILD;
}
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 origCaptionVisualOverflow;
bool captionFirstReflow = false;
if (mCaptionFrames.NotEmpty()) {
origCaptionRect = mCaptionFrames.FirstChild()->GetRect();
origCaptionVisualOverflow =
mCaptionFrames.FirstChild()->GetVisualOverflowRect();
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, 0);
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, 0);
innerRI.reset();
if (mCaptionFrames.NotEmpty()) {
nsTableFrame::InvalidateTableFrame(mCaptionFrames.FirstChild(),
origCaptionRect,
origCaptionVisualOverflow,
captionFirstReflow);
}
UpdateOverflowAreas(aDesiredSize);
if (GetPrevInFlow()) {
ReflowOverflowContainerChildren(aPresContext, aOuterRI,
aDesiredSize.mOverflowAreas, 0,
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(nsIPresShell* aPresShell, ComputedStyle* aStyle)
{
return new (aPresShell) nsTableWrapperFrame(aStyle);
}
NS_IMPL_FRAMEARENA_HELPERS(nsTableWrapperFrame)
#ifdef DEBUG_FRAME_DUMP
nsresult
nsTableWrapperFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("TableWrapper"), aResult);
}
#endif
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