mozilla
/
gecko-dev
зеркало из https://github.com/mozilla/gecko-dev.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность
gecko-dev/layout/tables/nsTableOuterFrame.cpp

1114 строки
41 KiB
C++
Исходник Ответственный История

/* -*- 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 "nsTableOuterFrame.h"
#include "nsTableFrame.h"
#include "nsTableCellFrame.h"
#include "nsStyleContext.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 "nsIDOMNode.h"
#include "nsDisplayList.h"
#include "nsLayoutUtils.h"
#include <algorithm>
using namespace mozilla;
using namespace mozilla::layout;
/* ----------- nsTableCaptionFrame ---------- */
#define NS_TABLE_FRAME_CAPTION_LIST_INDEX 1
#define NO_SIDE 100
// caption frame
nsTableCaptionFrame::nsTableCaptionFrame(nsStyleContext* aContext):
nsBlockFrame(aContext)
{
// shrink wrap
SetFlags(NS_BLOCK_FLOAT_MGR);
}
nsTableCaptionFrame::~nsTableCaptionFrame()
{
}
nsIAtom*
nsTableCaptionFrame::GetType() const
{
return nsGkAtoms::tableCaptionFrame;
}
/* virtual */ nscoord
nsTableOuterFrame::GetBaseline() const
{
nsIFrame* kid = mFrames.FirstChild();
if (!kid) {
NS_NOTREACHED("no inner table");
return nsContainerFrame::GetBaseline();
}
return kid->GetBaseline() + kid->GetPosition().y;
}
/* virtual */ nsSize
nsTableCaptionFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext,
nsSize aCBSize, nscoord aAvailableWidth,
nsSize aMargin, nsSize aBorder,
nsSize aPadding, bool aShrinkWrap)
{
nsSize result = nsBlockFrame::ComputeAutoSize(aRenderingContext, aCBSize,
aAvailableWidth, aMargin, aBorder, aPadding, aShrinkWrap);
// If we're a container for font size inflation, then shrink
// wrapping inside of us should not apply font size inflation.
AutoMaybeDisableFontInflation an(this);
uint8_t captionSide = StyleTableBorder()->mCaptionSide;
if (captionSide == NS_STYLE_CAPTION_SIDE_LEFT ||
captionSide == NS_STYLE_CAPTION_SIDE_RIGHT) {
result.width = GetMinWidth(aRenderingContext);
} else if (captionSide == NS_STYLE_CAPTION_SIDE_TOP ||
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM) {
// The outer frame constrains our available width to the width of
// the table. Grow if our min-width is bigger than that, but not
// larger than the containing block width. (It would really be nice
// to transmit that information another way, so we could grow up to
// the table's available width, but that's harder.)
nscoord min = GetMinWidth(aRenderingContext);
if (min > aCBSize.width)
min = aCBSize.width;
if (min > result.width)
result.width = min;
}
return result;
}
nsIFrame*
nsTableCaptionFrame::GetParentStyleContextFrame() const
{
NS_PRECONDITION(mContent->GetParent(),
"How could we not have a parent here?");
// The caption's style context parent is the inner frame, unless
// it's anonymous.
nsIFrame* outerFrame = GetParent();
if (outerFrame && outerFrame->GetType() == nsGkAtoms::tableOuterFrame) {
nsIFrame* innerFrame = outerFrame->GetFirstPrincipalChild();
if (innerFrame) {
return nsFrame::CorrectStyleParentFrame(innerFrame,
StyleContext()->GetPseudo());
}
}
NS_NOTREACHED("Where is our inner table frame?");
return nsBlockFrame::GetParentStyleContextFrame();
}
#ifdef ACCESSIBILITY
a11y::AccType
nsTableCaptionFrame::AccessibleType()
{
if (!GetRect().IsEmpty()) {
return a11y::eHTMLCaptionType;
}
return a11y::eNoType;
}
#endif
#ifdef DEBUG_FRAME_DUMP
nsresult
nsTableCaptionFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("Caption"), aResult);
}
#endif
nsIFrame*
NS_NewTableCaptionFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsTableCaptionFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsTableCaptionFrame)
/* ----------- nsTableOuterFrame ---------- */
nsTableOuterFrame::nsTableOuterFrame(nsStyleContext* aContext):
nsContainerFrame(aContext)
{
}
nsTableOuterFrame::~nsTableOuterFrame()
{
}
NS_QUERYFRAME_HEAD(nsTableOuterFrame)
NS_QUERYFRAME_ENTRY(nsTableOuterFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
#ifdef ACCESSIBILITY
a11y::AccType
nsTableOuterFrame::AccessibleType()
{
return a11y::eHTMLTableType;
}
#endif
void
nsTableOuterFrame::DestroyFrom(nsIFrame* aDestructRoot)
{
DestroyAbsoluteFrames(aDestructRoot);
mCaptionFrames.DestroyFramesFrom(aDestructRoot);
nsContainerFrame::DestroyFrom(aDestructRoot);
}
const nsFrameList&
nsTableOuterFrame::GetChildList(ChildListID aListID) const
{
if (aListID == kCaptionList) {
return mCaptionFrames;
}
return nsContainerFrame::GetChildList(aListID);
}
void
nsTableOuterFrame::GetChildLists(nsTArray<ChildList>* aLists) const
{
nsContainerFrame::GetChildLists(aLists);
mCaptionFrames.AppendIfNonempty(aLists, kCaptionList);
}
nsresult
nsTableOuterFrame::SetInitialChildList(ChildListID aListID,
nsFrameList& aChildList)
{
if (kCaptionList == aListID) {
// the frame constructor already checked for table-caption display type
mCaptionFrames.SetFrames(aChildList);
}
else {
NS_ASSERTION(aListID == kPrincipalList, "wrong childlist");
NS_ASSERTION(mFrames.IsEmpty(), "Frame leak!");
NS_ASSERTION(aChildList.FirstChild() &&
nsGkAtoms::tableFrame == aChildList.FirstChild()->GetType(),
"expected a table frame");
mFrames.SetFrames(aChildList);
}
return NS_OK;
}
nsresult
nsTableOuterFrame::AppendFrames(ChildListID aListID,
nsFrameList& aFrameList)
{
nsresult rv;
// 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
if (kCaptionList == aListID) {
NS_ASSERTION(aFrameList.IsEmpty() ||
aFrameList.FirstChild()->GetType() == nsGkAtoms::tableCaptionFrame,
"appending non-caption frame to captionList");
mCaptionFrames.AppendFrames(this, aFrameList);
rv = NS_OK;
// Reflow the new caption frame. It's already marked dirty, so
// just tell the pres shell.
PresContext()->PresShell()->
FrameNeedsReflow(this, nsIPresShell::eTreeChange,
NS_FRAME_HAS_DIRTY_CHILDREN);
}
else {
NS_PRECONDITION(false, "unexpected child list");
rv = NS_ERROR_UNEXPECTED;
}
return rv;
}
nsresult
nsTableOuterFrame::InsertFrames(ChildListID aListID,
nsIFrame* aPrevFrame,
nsFrameList& aFrameList)
{
if (kCaptionList == aListID) {
NS_ASSERTION(!aPrevFrame || aPrevFrame->GetParent() == this,
"inserting after sibling frame with different parent");
NS_ASSERTION(aFrameList.IsEmpty() ||
aFrameList.FirstChild()->GetType() == nsGkAtoms::tableCaptionFrame,
"inserting non-caption frame into captionList");
mCaptionFrames.InsertFrames(nullptr, aPrevFrame, aFrameList);
// Reflow the new caption frame. It's already marked dirty, so
// just tell the pres shell.
PresContext()->PresShell()->
FrameNeedsReflow(this, nsIPresShell::eTreeChange,
NS_FRAME_HAS_DIRTY_CHILDREN);
return NS_OK;
}
else {
NS_PRECONDITION(!aPrevFrame, "invalid previous frame");
return AppendFrames(aListID, aFrameList);
}
}
nsresult
nsTableOuterFrame::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
NS_PRECONDITION(kCaptionList == aListID, "can't remove inner frame");
if (HasSideCaption()) {
// The old caption width had an effect on the inner table width 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);
PresContext()->PresShell()->
FrameNeedsReflow(this, nsIPresShell::eTreeChange,
NS_FRAME_HAS_DIRTY_CHILDREN); // also means child removed
return NS_OK;
}
void
nsTableOuterFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
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, aDirtyRect, aLists);
return;
}
nsDisplayListCollection set;
BuildDisplayListForInnerTable(aBuilder, aDirtyRect, set);
nsDisplayListSet captionSet(set, set.BlockBorderBackgrounds());
BuildDisplayListForChild(aBuilder, mCaptionFrames.FirstChild(),
aDirtyRect, captionSet);
// Now we have to sort everything by content order, since the caption
// may be somewhere inside the table
set.SortAllByContentOrder(aBuilder, GetContent());
set.MoveTo(aLists);
}
void
nsTableOuterFrame::BuildDisplayListForInnerTable(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
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, aDirtyRect, aLists);
kid = kid->GetNextSibling();
}
}
nsIFrame*
nsTableOuterFrame::GetParentStyleContextFrame() const
{
// The table outer frame and the (inner) table frame split the style
// data by giving the table frame the style context associated with
// the table content node and creating a style context for the outer
// frame that is a *child* of the table frame's style context,
// matching the ::-moz-table-outer pseudo-element. html.css has a
// rule that causes that pseudo-element (and thus the outer table)
// to inherit *some* style properties from the table frame. The
// children of the table inherit directly from the inner table, and
// the outer table's style context is a leaf.
return InnerTableFrame();
}
// INCREMENTAL REFLOW HELPER FUNCTIONS
void
nsTableOuterFrame::InitChildReflowState(nsPresContext& aPresContext,
nsHTMLReflowState& aReflowState)
{
nsMargin collapseBorder;
nsMargin collapsePadding(0,0,0,0);
nsMargin* pCollapseBorder = nullptr;
nsMargin* pCollapsePadding = nullptr;
if (aReflowState.frame == InnerTableFrame() &&
InnerTableFrame()->IsBorderCollapse()) {
collapseBorder = InnerTableFrame()->GetIncludedOuterBCBorder();
pCollapseBorder = &collapseBorder;
pCollapsePadding = &collapsePadding;
}
aReflowState.Init(&aPresContext, -1, -1, pCollapseBorder, pCollapsePadding);
}
// get the margin and padding data. nsHTMLReflowState doesn't handle the
// case of auto margins
void
nsTableOuterFrame::GetChildMargin(nsPresContext* aPresContext,
const nsHTMLReflowState& aOuterRS,
nsIFrame* aChildFrame,
nscoord aAvailWidth,
nsMargin& aMargin)
{
// 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.
nsHTMLReflowState childRS(aPresContext, aOuterRS, aChildFrame,
nsSize(aAvailWidth, aOuterRS.AvailableHeight()),
-1, -1, nsHTMLReflowState::CALLER_WILL_INIT);
InitChildReflowState(*aPresContext, childRS);
aMargin = childRS.ComputedPhysicalMargin();
}
static nsSize
GetContainingBlockSize(const nsHTMLReflowState& aOuterRS)
{
nsSize size(0,0);
const nsHTMLReflowState* containRS =
aOuterRS.mCBReflowState;
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
nsTableOuterFrame::GetMinWidth(nsRenderingContext *aRenderingContext)
{
nscoord width = nsLayoutUtils::IntrinsicForContainer(aRenderingContext,
InnerTableFrame(), nsLayoutUtils::MIN_WIDTH);
DISPLAY_MIN_WIDTH(this, width);
if (mCaptionFrames.NotEmpty()) {
nscoord capWidth =
nsLayoutUtils::IntrinsicForContainer(aRenderingContext,
mCaptionFrames.FirstChild(),
nsLayoutUtils::MIN_WIDTH);
if (HasSideCaption()) {
width += capWidth;
} else {
if (capWidth > width) {
width = capWidth;
}
}
}
return width;
}
/* virtual */ nscoord
nsTableOuterFrame::GetPrefWidth(nsRenderingContext *aRenderingContext)
{
nscoord maxWidth;
DISPLAY_PREF_WIDTH(this, maxWidth);
maxWidth = nsLayoutUtils::IntrinsicForContainer(aRenderingContext,
InnerTableFrame(), nsLayoutUtils::PREF_WIDTH);
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_WIDTH);
maxWidth += capMin;
}
break;
default:
{
nsLayoutUtils::IntrinsicWidthType iwt;
if (captionSide == NS_STYLE_CAPTION_SIDE_TOP ||
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM) {
// Don't let the caption's pref width expand the table's pref
// width.
iwt = nsLayoutUtils::MIN_WIDTH;
} else {
NS_ASSERTION(captionSide == NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE ||
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE,
"unexpected caption side");
iwt = nsLayoutUtils::PREF_WIDTH;
}
nscoord capPref =
nsLayoutUtils::IntrinsicForContainer(aRenderingContext,
mCaptionFrames.FirstChild(),
iwt);
maxWidth = std::max(maxWidth, capPref);
}
break;
}
}
return maxWidth;
}
// Compute the margin-box width of aChildFrame given the inputs. If
// aMarginResult is non-null, fill it with the part of the margin-width
// that was contributed by the margin.
static nscoord
ChildShrinkWrapWidth(nsRenderingContext *aRenderingContext,
nsIFrame *aChildFrame,
nsSize aCBSize, nscoord aAvailableWidth,
nscoord *aMarginResult = nullptr)
{
AutoMaybeDisableFontInflation an(aChildFrame);
nsCSSOffsetState offsets(aChildFrame, aRenderingContext, aCBSize.width);
nsSize size = aChildFrame->ComputeSize(aRenderingContext, aCBSize,
aAvailableWidth,
nsSize(offsets.ComputedPhysicalMargin().LeftRight(),
offsets.ComputedPhysicalMargin().TopBottom()),
nsSize(offsets.ComputedPhysicalBorderPadding().LeftRight() -
offsets.ComputedPhysicalPadding().LeftRight(),
offsets.ComputedPhysicalBorderPadding().TopBottom() -
offsets.ComputedPhysicalPadding().TopBottom()),
nsSize(offsets.ComputedPhysicalPadding().LeftRight(),
offsets.ComputedPhysicalPadding().TopBottom()),
true);
if (aMarginResult)
*aMarginResult = offsets.ComputedPhysicalMargin().LeftRight();
return size.width + offsets.ComputedPhysicalMargin().LeftRight() +
offsets.ComputedPhysicalBorderPadding().LeftRight();
}
/* virtual */ nsSize
nsTableOuterFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext,
nsSize aCBSize, nscoord aAvailableWidth,
nsSize aMargin, nsSize aBorder,
nsSize aPadding, bool aShrinkWrap)
{
nscoord kidAvailableWidth = aAvailableWidth - aMargin.width;
NS_ASSERTION(aBorder == nsSize(0, 0) &&
aPadding == nsSize(0, 0),
"Table outer frames cannot hae 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 GetMinWidth and
// GetPrefWidth. See bug 349457 for an example.
// Match the availableWidth logic in Reflow.
uint8_t captionSide = GetCaptionSide();
nscoord width;
if (captionSide == NO_SIDE) {
width = ChildShrinkWrapWidth(aRenderingContext, InnerTableFrame(),
aCBSize, kidAvailableWidth);
} else if (captionSide == NS_STYLE_CAPTION_SIDE_LEFT ||
captionSide == NS_STYLE_CAPTION_SIDE_RIGHT) {
nscoord capWidth = ChildShrinkWrapWidth(aRenderingContext,
mCaptionFrames.FirstChild(),
aCBSize, kidAvailableWidth);
width = capWidth + ChildShrinkWrapWidth(aRenderingContext,
InnerTableFrame(), aCBSize,
kidAvailableWidth - capWidth);
} else if (captionSide == NS_STYLE_CAPTION_SIDE_TOP ||
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM) {
nscoord margin;
width = ChildShrinkWrapWidth(aRenderingContext, InnerTableFrame(),
aCBSize, kidAvailableWidth, &margin);
nscoord capWidth = ChildShrinkWrapWidth(aRenderingContext,
mCaptionFrames.FirstChild(), aCBSize,
width - margin);
if (capWidth > width)
width = capWidth;
} else {
NS_ASSERTION(captionSide == NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE ||
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE,
"unexpected caption-side");
width = ChildShrinkWrapWidth(aRenderingContext, InnerTableFrame(),
aCBSize, kidAvailableWidth);
nscoord capWidth = ChildShrinkWrapWidth(aRenderingContext,
mCaptionFrames.FirstChild(),
aCBSize, kidAvailableWidth);
if (capWidth > width)
width = capWidth;
}
return nsSize(width, NS_UNCONSTRAINEDSIZE);
}
uint8_t
nsTableOuterFrame::GetCaptionSide()
{
if (mCaptionFrames.NotEmpty()) {
return mCaptionFrames.FirstChild()->StyleTableBorder()->mCaptionSide;
}
else {
return NO_SIDE; // no caption
}
}
uint8_t
nsTableOuterFrame::GetCaptionVerticalAlign()
{
const nsStyleCoord& va =
mCaptionFrames.FirstChild()->StyleTextReset()->mVerticalAlign;
return (va.GetUnit() == eStyleUnit_Enumerated)
? va.GetIntValue()
: NS_STYLE_VERTICAL_ALIGN_TOP;
}
void
nsTableOuterFrame::SetDesiredSize(uint8_t aCaptionSide,
const nsMargin& aInnerMargin,
const nsMargin& aCaptionMargin,
nscoord& aWidth,
nscoord& aHeight)
{
aWidth = aHeight = 0;
nsRect innerRect = InnerTableFrame()->GetRect();
nscoord innerWidth = innerRect.width;
nsRect captionRect(0,0,0,0);
nscoord captionWidth = 0;
if (mCaptionFrames.NotEmpty()) {
captionRect = mCaptionFrames.FirstChild()->GetRect();
captionWidth = captionRect.width;
}
switch(aCaptionSide) {
case NS_STYLE_CAPTION_SIDE_LEFT:
aWidth = std::max(aInnerMargin.left, aCaptionMargin.left + captionWidth + aCaptionMargin.right) +
innerWidth + aInnerMargin.right;
break;
case NS_STYLE_CAPTION_SIDE_RIGHT:
aWidth = std::max(aInnerMargin.right, aCaptionMargin.left + captionWidth + aCaptionMargin.right) +
innerWidth + aInnerMargin.left;
break;
default:
aWidth = aInnerMargin.left + innerWidth + aInnerMargin.right;
aWidth = std::max(aWidth, captionRect.XMost() + aCaptionMargin.right);
}
aHeight = innerRect.YMost() + aInnerMargin.bottom;
if (NS_STYLE_CAPTION_SIDE_BOTTOM != aCaptionSide) {
aHeight = std::max(aHeight, captionRect.YMost() + aCaptionMargin.bottom);
}
else {
aHeight = std::max(aHeight, captionRect.YMost() + aCaptionMargin.bottom +
aInnerMargin.bottom);
}
}
nsresult
nsTableOuterFrame::GetCaptionOrigin(uint32_t aCaptionSide,
const nsSize& aContainBlockSize,
const nsSize& aInnerSize,
const nsMargin& aInnerMargin,
const nsSize& aCaptionSize,
nsMargin& aCaptionMargin,
nsPoint& aOrigin)
{
aOrigin.x = aOrigin.y = 0;
if ((NS_UNCONSTRAINEDSIZE == aInnerSize.width) || (NS_UNCONSTRAINEDSIZE == aInnerSize.height) ||
(NS_UNCONSTRAINEDSIZE == aCaptionSize.width) || (NS_UNCONSTRAINEDSIZE == aCaptionSize.height)) {
return NS_OK;
}
if (mCaptionFrames.IsEmpty()) return NS_OK;
NS_ASSERTION(NS_AUTOMARGIN != aCaptionMargin.left, "The computed caption margin is auto?");
NS_ASSERTION(NS_AUTOMARGIN != aCaptionMargin.top, "The computed caption margin is auto?");
NS_ASSERTION(NS_AUTOMARGIN != aCaptionMargin.bottom, "The computed caption margin is auto?");
// horizontal computation
switch(aCaptionSide) {
case NS_STYLE_CAPTION_SIDE_BOTTOM:
case NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE: {
// FIXME: Position relative to right edge for RTL. (Based on table
// direction or table parent direction?)
aOrigin.x = aCaptionMargin.left;
if (aCaptionSide == NS_STYLE_CAPTION_SIDE_BOTTOM) {
// We placed the caption using only the table's width as available
// width, and we should position it this way as well.
aOrigin.x += aInnerMargin.left;
}
} break;
case NS_STYLE_CAPTION_SIDE_LEFT: {
aOrigin.x = aCaptionMargin.left;
} break;
case NS_STYLE_CAPTION_SIDE_RIGHT: {
aOrigin.x = aInnerMargin.left + aInnerSize.width + aCaptionMargin.left;
} break;
default: { // top
NS_ASSERTION(aCaptionSide == NS_STYLE_CAPTION_SIDE_TOP ||
aCaptionSide == NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE,
"unexpected caption side");
// FIXME: Position relative to right edge for RTL. (Based on table
// direction or table parent direction?)
aOrigin.x = aCaptionMargin.left;
if (aCaptionSide == NS_STYLE_CAPTION_SIDE_TOP) {
// We placed the caption using only the table's width as available
// width, and we should position it this way as well.
aOrigin.x += aInnerMargin.left;
}
} break;
}
// vertical computation
switch (aCaptionSide) {
case NS_STYLE_CAPTION_SIDE_RIGHT:
case NS_STYLE_CAPTION_SIDE_LEFT:
aOrigin.y = aInnerMargin.top;
switch (GetCaptionVerticalAlign()) {
case NS_STYLE_VERTICAL_ALIGN_MIDDLE:
aOrigin.y = std::max(0, aInnerMargin.top + ((aInnerSize.height - aCaptionSize.height) / 2));
break;
case NS_STYLE_VERTICAL_ALIGN_BOTTOM:
aOrigin.y = std::max(0, aInnerMargin.top + aInnerSize.height - aCaptionSize.height);
break;
default:
break;
}
break;
case NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE:
case NS_STYLE_CAPTION_SIDE_BOTTOM: {
aOrigin.y = aInnerMargin.top + aInnerSize.height + aCaptionMargin.top;
} break;
case NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE:
case NS_STYLE_CAPTION_SIDE_TOP: {
aOrigin.y = aInnerMargin.top + aCaptionMargin.top;
} break;
default:
NS_NOTREACHED("Unknown caption alignment type");
break;
}
return NS_OK;
}
nsresult
nsTableOuterFrame::GetInnerOrigin(uint32_t aCaptionSide,
const nsSize& aContainBlockSize,
const nsSize& aCaptionSize,
const nsMargin& aCaptionMargin,
const nsSize& aInnerSize,
nsMargin& aInnerMargin,
nsPoint& aOrigin)
{
NS_ASSERTION(NS_AUTOMARGIN != aCaptionMargin.left, "The computed caption margin is auto?");
NS_ASSERTION(NS_AUTOMARGIN != aCaptionMargin.right, "The computed caption margin is auto?");
NS_ASSERTION(NS_AUTOMARGIN != aInnerMargin.left, "The computed inner margin is auto?");
NS_ASSERTION(NS_AUTOMARGIN != aInnerMargin.right, "The computed inner margin is auto?");
NS_ASSERTION(NS_AUTOMARGIN != aInnerMargin.top, "The computed inner margin is auto?");
NS_ASSERTION(NS_AUTOMARGIN != aInnerMargin.bottom, "The computed inner margin is auto?");
aOrigin.x = aOrigin.y = 0;
if ((NS_UNCONSTRAINEDSIZE == aInnerSize.width) || (NS_UNCONSTRAINEDSIZE == aInnerSize.height) ||
(NS_UNCONSTRAINEDSIZE == aCaptionSize.width) || (NS_UNCONSTRAINEDSIZE == aCaptionSize.height)) {
return NS_OK;
}
nscoord minCapWidth = aCaptionSize.width;
minCapWidth += aCaptionMargin.left;
minCapWidth += aCaptionMargin.right;
// horizontal computation
switch (aCaptionSide) {
case NS_STYLE_CAPTION_SIDE_LEFT: {
if (aInnerMargin.left < minCapWidth) {
// shift the inner table to get some place for the caption
aInnerMargin.right += aInnerMargin.left - minCapWidth;
aInnerMargin.right = std::max(0, aInnerMargin.right);
aInnerMargin.left = minCapWidth;
}
aOrigin.x = aInnerMargin.left;
} 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 == NS_STYLE_CAPTION_SIDE_RIGHT ||
aCaptionSide == NO_SIDE,
"unexpected caption side");
aOrigin.x = aInnerMargin.left;
} break;
}
// vertical computation
switch (aCaptionSide) {
case NS_STYLE_CAPTION_SIDE_BOTTOM:
case NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE: {
aOrigin.y = aInnerMargin.top;
} break;
case NS_STYLE_CAPTION_SIDE_LEFT:
case NS_STYLE_CAPTION_SIDE_RIGHT: {
aOrigin.y = aInnerMargin.top;
switch (GetCaptionVerticalAlign()) {
case NS_STYLE_VERTICAL_ALIGN_MIDDLE:
aOrigin.y = std::max(aInnerMargin.top, (aCaptionSize.height - aInnerSize.height) / 2);
break;
case NS_STYLE_VERTICAL_ALIGN_BOTTOM:
aOrigin.y = std::max(aInnerMargin.top, aCaptionSize.height - aInnerSize.height);
break;
default:
break;
}
} break;
case NO_SIDE:
case NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE:
case NS_STYLE_CAPTION_SIDE_TOP: {
aOrigin.y = aInnerMargin.top + aCaptionMargin.top + aCaptionSize.height +
aCaptionMargin.bottom;
} break;
default:
NS_NOTREACHED("Unknown caption alignment type");
break;
}
return NS_OK;
}
void
nsTableOuterFrame::OuterBeginReflowChild(nsPresContext* aPresContext,
nsIFrame* aChildFrame,
const nsHTMLReflowState& aOuterRS,
void* aChildRSSpace,
nscoord aAvailWidth)
{
// work around pixel rounding errors, round down to ensure we don't exceed the avail height in
nscoord availHeight = aOuterRS.AvailableHeight();
if (NS_UNCONSTRAINEDSIZE != availHeight) {
if (mCaptionFrames.FirstChild() == aChildFrame) {
availHeight = NS_UNCONSTRAINEDSIZE;
} else {
nsMargin margin;
GetChildMargin(aPresContext, aOuterRS, aChildFrame,
aOuterRS.AvailableWidth(), margin);
NS_ASSERTION(NS_UNCONSTRAINEDSIZE != margin.top, "No unconstrainedsize arithmetic, please");
availHeight -= margin.top;
NS_ASSERTION(NS_UNCONSTRAINEDSIZE != margin.bottom, "No unconstrainedsize arithmetic, please");
availHeight -= margin.bottom;
}
}
nsSize availSize(aAvailWidth, availHeight);
// create and init the child reflow state, using placement new on
// stack space allocated by the caller, so that the caller can destroy
// it
nsHTMLReflowState &childRS = * new (aChildRSSpace)
nsHTMLReflowState(aPresContext, aOuterRS, aChildFrame, availSize,
-1, -1, nsHTMLReflowState::CALLER_WILL_INIT);
InitChildReflowState(*aPresContext, childRS);
// see if we need to reset top-of-page due to a caption
if (childRS.mFlags.mIsTopOfPage &&
mCaptionFrames.FirstChild() == aChildFrame) {
uint8_t captionSide = GetCaptionSide();
if (captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM ||
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE) {
childRS.mFlags.mIsTopOfPage = false;
}
}
}
nsresult
nsTableOuterFrame::OuterDoReflowChild(nsPresContext* aPresContext,
nsIFrame* aChildFrame,
const nsHTMLReflowState& aChildRS,
nsHTMLReflowMetrics& aMetrics,
nsReflowStatus& aStatus)
{
// use the current position as a best guess for placement
nsPoint childPt = aChildFrame->GetPosition();
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 outer table frames always assume that their inner table
// frames don't go away. If an outer table frame is removed because it is
// a next-in-flow of an already complete outer table 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;
}
return ReflowChild(aChildFrame, aPresContext, aMetrics, aChildRS,
childPt.x, childPt.y, flags, aStatus);
}
void
nsTableOuterFrame::UpdateReflowMetrics(uint8_t aCaptionSide,
nsHTMLReflowMetrics& aMet,
const nsMargin& aInnerMargin,
const nsMargin& aCaptionMargin)
{
SetDesiredSize(aCaptionSide, aInnerMargin, aCaptionMargin,
aMet.Width(), aMet.Height());
aMet.SetOverflowAreasToDesiredBounds();
ConsiderChildOverflow(aMet.mOverflowAreas, InnerTableFrame());
if (mCaptionFrames.NotEmpty()) {
ConsiderChildOverflow(aMet.mOverflowAreas, mCaptionFrames.FirstChild());
}
}
nsresult nsTableOuterFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aOuterRS,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsTableOuterFrame");
DISPLAY_REFLOW(aPresContext, this, aOuterRS, aDesiredSize, aStatus);
nsresult rv = NS_OK;
uint8_t captionSide = GetCaptionSide();
// Initialize out parameters
aDesiredSize.Width() = aDesiredSize.Height() = 0;
aStatus = NS_FRAME_COMPLETE;
if (!(GetStateBits() & 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();
}
// Use longs to get more-aligned space.
#define LONGS_IN_HTMLRS \
((sizeof(nsHTMLReflowState) + sizeof(long) - 1) / sizeof(long))
long captionRSSpace[LONGS_IN_HTMLRS];
nsHTMLReflowState *captionRS =
static_cast<nsHTMLReflowState*>((void*)captionRSSpace);
long innerRSSpace[LONGS_IN_HTMLRS];
nsHTMLReflowState *innerRS =
static_cast<nsHTMLReflowState*>((void*) innerRSSpace);
nsRect origInnerRect = InnerTableFrame()->GetRect();
nsRect origInnerVisualOverflow = InnerTableFrame()->GetVisualOverflowRect();
bool innerFirstReflow =
(InnerTableFrame()->GetStateBits() & NS_FRAME_FIRST_REFLOW) != 0;
nsRect origCaptionRect;
nsRect origCaptionVisualOverflow;
bool captionFirstReflow;
if (mCaptionFrames.NotEmpty()) {
origCaptionRect = mCaptionFrames.FirstChild()->GetRect();
origCaptionVisualOverflow =
mCaptionFrames.FirstChild()->GetVisualOverflowRect();
captionFirstReflow =
(mCaptionFrames.FirstChild()->GetStateBits() & NS_FRAME_FIRST_REFLOW) != 0;
}
// ComputeAutoSize has to match this logic.
if (captionSide == NO_SIDE) {
// We don't have a caption.
OuterBeginReflowChild(aPresContext, InnerTableFrame(), aOuterRS,
innerRSSpace, aOuterRS.ComputedWidth());
} else if (captionSide == NS_STYLE_CAPTION_SIDE_LEFT ||
captionSide == NS_STYLE_CAPTION_SIDE_RIGHT) {
// nsTableCaptionFrame::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(), aOuterRS,
captionRSSpace, aOuterRS.ComputedWidth());
nscoord innerAvailWidth = aOuterRS.ComputedWidth() -
(captionRS->ComputedWidth() + captionRS->ComputedPhysicalMargin().LeftRight() +
captionRS->ComputedPhysicalBorderPadding().LeftRight());
OuterBeginReflowChild(aPresContext, InnerTableFrame(), aOuterRS,
innerRSSpace, innerAvailWidth);
} 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 wider 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 width (if we did,
// it would break 'auto' margins), but this effectively does that.
OuterBeginReflowChild(aPresContext, InnerTableFrame(), aOuterRS,
innerRSSpace, aOuterRS.ComputedWidth());
// 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 width (ignoring the margin on one side if
// neither are auto). (We take advantage of that later when we call
// GetCaptionOrigin, though.)
nscoord innerBorderWidth = innerRS->ComputedWidth() +
innerRS->ComputedPhysicalBorderPadding().LeftRight();
OuterBeginReflowChild(aPresContext, mCaptionFrames.FirstChild(), aOuterRS,
captionRSSpace, innerBorderWidth);
} 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.
OuterBeginReflowChild(aPresContext, mCaptionFrames.FirstChild(), aOuterRS,
captionRSSpace, aOuterRS.ComputedWidth());
OuterBeginReflowChild(aPresContext, InnerTableFrame(), aOuterRS,
innerRSSpace, aOuterRS.ComputedWidth());
}
// First reflow the caption.
nsHTMLReflowMetrics captionMet(captionRS->GetWritingMode());
nsSize captionSize;
nsMargin captionMargin;
if (mCaptionFrames.NotEmpty()) {
nsReflowStatus capStatus; // don't let the caption cause incomplete
rv = OuterDoReflowChild(aPresContext, mCaptionFrames.FirstChild(),
*captionRS, captionMet, capStatus);
if (NS_FAILED(rv)) return rv;
captionSize.width = captionMet.Width();
captionSize.height = captionMet.Height();
captionMargin = captionRS->ComputedPhysicalMargin();
// Now that we know the height of the caption, reduce the available height
// for the table frame if we are height constrained and the caption is above
// or below the inner table.
if (NS_UNCONSTRAINEDSIZE != aOuterRS.AvailableHeight()) {
nscoord captionHeight = 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: {
captionHeight = captionSize.height + captionMargin.TopBottom();
break;
}
}
innerRS->AvailableHeight() =
std::max(0, innerRS->AvailableHeight() - captionHeight);
}
} else {
captionSize.SizeTo(0,0);
captionMargin.SizeTo(0,0,0,0);
}
// Then, now that we know how much to reduce the width of the inner
// table to account for side captions, reflow the inner table.
nsHTMLReflowMetrics innerMet(innerRS->GetWritingMode());
rv = OuterDoReflowChild(aPresContext, InnerTableFrame(), *innerRS,
innerMet, aStatus);
if (NS_FAILED(rv)) return rv;
nsSize innerSize;
innerSize.width = innerMet.Width();
innerSize.height = innerMet.Height();
nsMargin innerMargin = innerRS->ComputedPhysicalMargin();
nsSize containSize = GetContainingBlockSize(aOuterRS);
// 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.)
if (mCaptionFrames.NotEmpty()) {
nsPoint captionOrigin;
GetCaptionOrigin(captionSide, containSize, innerSize,
innerMargin, captionSize, captionMargin, captionOrigin);
FinishReflowChild(mCaptionFrames.FirstChild(), aPresContext, captionMet,
captionRS, captionOrigin.x, captionOrigin.y, 0);
captionRS->~nsHTMLReflowState();
}
// XXX If the height is constrained then we need to check whether
// everything still fits...
nsPoint innerOrigin;
GetInnerOrigin(captionSide, containSize, captionSize,
captionMargin, innerSize, innerMargin, innerOrigin);
FinishReflowChild(InnerTableFrame(), aPresContext, innerMet, innerRS,
innerOrigin.x, innerOrigin.y, 0);
innerRS->~nsHTMLReflowState();
nsTableFrame::InvalidateTableFrame(InnerTableFrame(), origInnerRect,
origInnerVisualOverflow, innerFirstReflow);
if (mCaptionFrames.NotEmpty()) {
nsTableFrame::InvalidateTableFrame(mCaptionFrames.FirstChild(), origCaptionRect,
origCaptionVisualOverflow,
captionFirstReflow);
}
UpdateReflowMetrics(captionSide, aDesiredSize, innerMargin, captionMargin);
if (GetPrevInFlow()) {
ReflowOverflowContainerChildren(aPresContext, aOuterRS,
aDesiredSize.mOverflowAreas, 0,
aStatus);
}
FinishReflowWithAbsoluteFrames(aPresContext, aDesiredSize, aOuterRS, aStatus);
// Return our desired rect
NS_FRAME_SET_TRUNCATION(aStatus, aOuterRS, aDesiredSize);
return rv;
}
nsIAtom*
nsTableOuterFrame::GetType() const
{
return nsGkAtoms::tableOuterFrame;
}
/* ----- global methods ----- */
nsIContent*
nsTableOuterFrame::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();
}
nsIFrame*
NS_NewTableOuterFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsTableOuterFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsTableOuterFrame)
#ifdef DEBUG_FRAME_DUMP
nsresult
nsTableOuterFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("TableOuter"), aResult);
}
#endif
Ссылка в новой задаче Показать git blame Копировать постоянную ссылку