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nsTableCellFrame.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 "nsTableCellFrame.h"
#include "gfxUtils.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/Helpers.h"
#include "nsTableFrame.h"
#include "nsTableColFrame.h"
#include "nsTableRowFrame.h"
#include "nsTableRowGroupFrame.h"
#include "nsStyleContext.h"
#include "nsStyleConsts.h"
#include "nsPresContext.h"
#include "nsRenderingContext.h"
#include "nsCSSRendering.h"
#include "nsIContent.h"
#include "nsGenericHTMLElement.h"
#include "nsAttrValueInlines.h"
#include "nsHTMLParts.h"
#include "nsGkAtoms.h"
#include "nsIPresShell.h"
#include "nsCOMPtr.h"
#include "nsIServiceManager.h"
#include "nsIDOMNode.h"
#include "nsNameSpaceManager.h"
#include "nsDisplayList.h"
#include "nsLayoutUtils.h"
#include "nsTextFrame.h"
#include "FrameLayerBuilder.h"
#include <algorithm>
//TABLECELL SELECTION
#include "nsFrameSelection.h"
#include "mozilla/LookAndFeel.h"
using namespace mozilla;
using namespace mozilla::gfx;
using namespace mozilla::image;
nsTableCellFrame::nsTableCellFrame(nsStyleContext* aContext,
nsTableFrame* aTableFrame)
: nsContainerFrame(aContext)
, mDesiredSize(aTableFrame->GetWritingMode())
{
mColIndex = 0;
mPriorAvailISize = 0;
SetContentEmpty(false);
SetHasPctOverBSize(false);
}
nsTableCellFrame::~nsTableCellFrame()
{
}
NS_IMPL_FRAMEARENA_HELPERS(nsTableCellFrame)
void
nsTableCellFrame::Init(nsIContent* aContent,
nsContainerFrame* aParent,
nsIFrame* aPrevInFlow)
{
// Let the base class do its initialization
nsContainerFrame::Init(aContent, aParent, aPrevInFlow);
if (HasAnyStateBits(NS_FRAME_FONT_INFLATION_CONTAINER)) {
AddStateBits(NS_FRAME_FONT_INFLATION_FLOW_ROOT);
}
if (aPrevInFlow) {
// Set the column index
nsTableCellFrame* cellFrame = (nsTableCellFrame*)aPrevInFlow;
int32_t colIndex;
cellFrame->GetColIndex(colIndex);
SetColIndex(colIndex);
}
}
void
nsTableCellFrame::DestroyFrom(nsIFrame* aDestructRoot)
{
if (HasAnyStateBits(NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN)) {
nsTableFrame::UnregisterPositionedTablePart(this, aDestructRoot);
}
nsContainerFrame::DestroyFrom(aDestructRoot);
}
// nsIPercentBSizeObserver methods
void
nsTableCellFrame::NotifyPercentBSize(const ReflowInput& aReflowInput)
{
// ReflowInput ensures the mCBReflowInput of blocks inside a
// cell is the cell frame, not the inner-cell block, and that the
// containing block of an inner table is the containing block of its
// table wrapper.
// XXXldb Given the now-stricter |NeedsToObserve|, many if not all of
// these tests are probably unnecessary.
// Maybe the cell reflow state; we sure if we're inside the |if|.
const ReflowInput *cellRI = aReflowInput.mCBReflowInput;
if (cellRI && cellRI->mFrame == this &&
(cellRI->ComputedBSize() == NS_UNCONSTRAINEDSIZE ||
cellRI->ComputedBSize() == 0)) { // XXXldb Why 0?
// This is a percentage bsize on a frame whose percentage bsizes
// are based on the bsize of the cell, since its containing block
// is the inner cell frame.
// We'll only honor the percent bsize if sibling-cells/ancestors
// have specified/pct bsize. (Also, siblings only count for this if
// both this cell and the sibling cell span exactly 1 row.)
if (nsTableFrame::AncestorsHaveStyleBSize(*cellRI) ||
(GetTableFrame()->GetEffectiveRowSpan(*this) == 1 &&
cellRI->mParentReflowInput->mFrame->
HasAnyStateBits(NS_ROW_HAS_CELL_WITH_STYLE_BSIZE))) {
for (const ReflowInput *rs = aReflowInput.mParentReflowInput;
rs != cellRI;
rs = rs->mParentReflowInput) {
rs->mFrame->AddStateBits(NS_FRAME_CONTAINS_RELATIVE_BSIZE);
}
nsTableFrame::RequestSpecialBSizeReflow(*cellRI);
}
}
}
// The cell needs to observe its block and things inside its block but nothing below that
bool
nsTableCellFrame::NeedsToObserve(const ReflowInput& aReflowInput)
{
const ReflowInput *rs = aReflowInput.mParentReflowInput;
if (!rs)
return false;
if (rs->mFrame == this) {
// We always observe the child block. It will never send any
// notifications, but we need this so that the observer gets
// propagated to its kids.
return true;
}
rs = rs->mParentReflowInput;
if (!rs) {
return false;
}
// We always need to let the percent bsize observer be propagated
// from a table wrapper frame to an inner table frame.
nsIAtom *fType = aReflowInput.mFrame->GetType();
if (fType == nsGkAtoms::tableFrame) {
return true;
}
// We need the observer to be propagated to all children of the cell
// (i.e., children of the child block) in quirks mode, but only to
// tables in standards mode.
// XXX This may not be true in the case of orthogonal flows within
// the cell (bug 1174711 comment 8); we may need to observe isizes
// instead of bsizes for orthogonal children.
return rs->mFrame == this &&
(PresContext()->CompatibilityMode() == eCompatibility_NavQuirks ||
fType == nsGkAtoms::tableWrapperFrame);
}
nsresult
nsTableCellFrame::GetRowIndex(int32_t &aRowIndex) const
{
nsresult result;
nsTableRowFrame* row = static_cast<nsTableRowFrame*>(GetParent());
if (row) {
aRowIndex = row->GetRowIndex();
result = NS_OK;
}
else {
aRowIndex = 0;
result = NS_ERROR_NOT_INITIALIZED;
}
return result;
}
nsresult
nsTableCellFrame::GetColIndex(int32_t &aColIndex) const
{
if (GetPrevInFlow()) {
return static_cast<nsTableCellFrame*>(FirstInFlow())->GetColIndex(aColIndex);
}
else {
aColIndex = mColIndex;
return NS_OK;
}
}
nsresult
nsTableCellFrame::AttributeChanged(int32_t aNameSpaceID,
nsIAtom* aAttribute,
int32_t aModType)
{
// We need to recalculate in this case because of the nowrap quirk in
// BasicTableLayoutStrategy
if (aNameSpaceID == kNameSpaceID_None && aAttribute == nsGkAtoms::nowrap &&
PresContext()->CompatibilityMode() == eCompatibility_NavQuirks) {
PresContext()->PresShell()->
FrameNeedsReflow(this, nsIPresShell::eTreeChange, NS_FRAME_IS_DIRTY);
}
// let the table frame decide what to do
GetTableFrame()->AttributeChangedFor(this, mContent, aAttribute);
return NS_OK;
}
/* virtual */ void
nsTableCellFrame::DidSetStyleContext(nsStyleContext* aOldStyleContext)
{
nsContainerFrame::DidSetStyleContext(aOldStyleContext);
if (!aOldStyleContext) //avoid this on init
return;
nsTableFrame* tableFrame = GetTableFrame();
if (tableFrame->IsBorderCollapse() &&
tableFrame->BCRecalcNeeded(aOldStyleContext, StyleContext())) {
int32_t colIndex, rowIndex;
GetColIndex(colIndex);
GetRowIndex(rowIndex);
// row span needs to be clamped as we do not create rows in the cellmap
// which do not have cells originating in them
TableArea damageArea(colIndex, rowIndex, GetColSpan(),
std::min(GetRowSpan(), tableFrame->GetRowCount() - rowIndex));
tableFrame->AddBCDamageArea(damageArea);
}
}
#ifdef DEBUG
void
nsTableCellFrame::AppendFrames(ChildListID aListID,
nsFrameList& aFrameList)
{
MOZ_CRASH("unsupported operation");
}
void
nsTableCellFrame::InsertFrames(ChildListID aListID,
nsIFrame* aPrevFrame,
nsFrameList& aFrameList)
{
MOZ_CRASH("unsupported operation");
}
void
nsTableCellFrame::RemoveFrame(ChildListID aListID,
nsIFrame* aOldFrame)
{
MOZ_CRASH("unsupported operation");
}
#endif
void nsTableCellFrame::SetColIndex(int32_t aColIndex)
{
mColIndex = aColIndex;
}
/* virtual */ nsMargin
nsTableCellFrame::GetUsedMargin() const
{
return nsMargin(0,0,0,0);
}
//ASSURE DIFFERENT COLORS for selection
inline nscolor EnsureDifferentColors(nscolor colorA, nscolor colorB)
{
if (colorA == colorB)
{
nscolor res;
res = NS_RGB(NS_GET_R(colorA) ^ 0xff,
NS_GET_G(colorA) ^ 0xff,
NS_GET_B(colorA) ^ 0xff);
return res;
}
return colorA;
}
void
nsTableCellFrame::DecorateForSelection(DrawTarget* aDrawTarget, nsPoint aPt)
{
NS_ASSERTION(IsSelected(), "Should only be called for selected cells");
int16_t displaySelection;
nsPresContext* presContext = PresContext();
displaySelection = DisplaySelection(presContext);
if (displaySelection) {
RefPtr<nsFrameSelection> frameSelection =
presContext->PresShell()->FrameSelection();
if (frameSelection->GetTableCellSelection()) {
nscolor bordercolor;
if (displaySelection == nsISelectionController::SELECTION_DISABLED) {
bordercolor = NS_RGB(176,176,176);// disabled color
}
else {
bordercolor =
LookAndFeel::GetColor(LookAndFeel::eColorID_TextSelectBackground);
}
nscoord threePx = nsPresContext::CSSPixelsToAppUnits(3);
if ((mRect.width > threePx) && (mRect.height > threePx))
{
//compare bordercolor to ((nsStyleColor *)myColor)->mBackgroundColor)
bordercolor = EnsureDifferentColors(bordercolor,
StyleBackground()->mBackgroundColor);
int32_t appUnitsPerDevPixel = PresContext()->AppUnitsPerDevPixel();
Point devPixelOffset = NSPointToPoint(aPt, appUnitsPerDevPixel);
AutoRestoreTransform autoRestoreTransform(aDrawTarget);
aDrawTarget->SetTransform(
aDrawTarget->GetTransform().PreTranslate(devPixelOffset));
ColorPattern color(ToDeviceColor(bordercolor));
nscoord onePixel = nsPresContext::CSSPixelsToAppUnits(1);
StrokeLineWithSnapping(nsPoint(onePixel, 0), nsPoint(mRect.width, 0),
appUnitsPerDevPixel, *aDrawTarget, color);
StrokeLineWithSnapping(nsPoint(0, onePixel), nsPoint(0, mRect.height),
appUnitsPerDevPixel, *aDrawTarget, color);
StrokeLineWithSnapping(nsPoint(onePixel, mRect.height),
nsPoint(mRect.width, mRect.height),
appUnitsPerDevPixel, *aDrawTarget, color);
StrokeLineWithSnapping(nsPoint(mRect.width, onePixel),
nsPoint(mRect.width, mRect.height),
appUnitsPerDevPixel, *aDrawTarget, color);
//middle
nsRect r(onePixel, onePixel,
mRect.width - onePixel, mRect.height - onePixel);
Rect devPixelRect =
NSRectToSnappedRect(r, appUnitsPerDevPixel, *aDrawTarget);
aDrawTarget->StrokeRect(devPixelRect, color);
//shading
StrokeLineWithSnapping(nsPoint(2*onePixel, mRect.height-2*onePixel),
nsPoint(mRect.width-onePixel, mRect.height- (2*onePixel)),
appUnitsPerDevPixel, *aDrawTarget, color);
StrokeLineWithSnapping(nsPoint(mRect.width - (2*onePixel), 2*onePixel),
nsPoint(mRect.width - (2*onePixel), mRect.height-onePixel),
appUnitsPerDevPixel, *aDrawTarget, color);
}
}
}
}
DrawResult
nsTableCellFrame::PaintBackground(nsRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsPoint aPt,
uint32_t aFlags)
{
nsRect rect(aPt, GetSize());
nsCSSRendering::PaintBGParams params =
nsCSSRendering::PaintBGParams::ForAllLayers(*PresContext(),
aRenderingContext,
aDirtyRect, rect,
this, aFlags);
return nsCSSRendering::PaintBackground(params);
}
nsresult
nsTableCellFrame::ProcessBorders(nsTableFrame* aFrame,
nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists)
{
const nsStyleBorder* borderStyle = StyleBorder();
if (aFrame->IsBorderCollapse() || !borderStyle->HasBorder())
return NS_OK;
if (!GetContentEmpty() ||
StyleTableBorder()->mEmptyCells == NS_STYLE_TABLE_EMPTY_CELLS_SHOW) {
aLists.BorderBackground()->AppendNewToTop(new (aBuilder)
nsDisplayBorder(aBuilder, this));
}
return NS_OK;
}
class nsDisplayTableCellBackground : public nsDisplayTableItem {
public:
nsDisplayTableCellBackground(nsDisplayListBuilder* aBuilder,
nsTableCellFrame* aFrame) :
nsDisplayTableItem(aBuilder, aFrame) {
MOZ_COUNT_CTOR(nsDisplayTableCellBackground);
}
#ifdef NS_BUILD_REFCNT_LOGGING
virtual ~nsDisplayTableCellBackground() {
MOZ_COUNT_DTOR(nsDisplayTableCellBackground);
}
#endif
virtual void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
HitTestState* aState,
nsTArray<nsIFrame*> *aOutFrames) override {
aOutFrames->AppendElement(mFrame);
}
virtual void Paint(nsDisplayListBuilder* aBuilder,
nsRenderingContext* aCtx) override;
virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder,
bool* aSnap) override;
NS_DISPLAY_DECL_NAME("TableCellBackground", TYPE_TABLE_CELL_BACKGROUND)
};
void nsDisplayTableCellBackground::Paint(nsDisplayListBuilder* aBuilder,
nsRenderingContext* aCtx)
{
DrawResult result = static_cast<nsTableCellFrame*>(mFrame)->
PaintBackground(*aCtx, mVisibleRect, ToReferenceFrame(),
aBuilder->GetBackgroundPaintFlags());
nsDisplayTableItemGeometry::UpdateDrawResult(this, result);
}
nsRect
nsDisplayTableCellBackground::GetBounds(nsDisplayListBuilder* aBuilder,
bool* aSnap)
{
// revert from nsDisplayTableItem's implementation ... cell backgrounds
// don't overflow the cell
return nsDisplayItem::GetBounds(aBuilder, aSnap);
}
void nsTableCellFrame::InvalidateFrame(uint32_t aDisplayItemKey)
{
nsIFrame::InvalidateFrame(aDisplayItemKey);
GetParent()->InvalidateFrameWithRect(GetVisualOverflowRect() + GetPosition(), aDisplayItemKey);
}
void nsTableCellFrame::InvalidateFrameWithRect(const nsRect& aRect, uint32_t aDisplayItemKey)
{
nsIFrame::InvalidateFrameWithRect(aRect, aDisplayItemKey);
// If we have filters applied that would affects our bounds, then
// we get an inactive layer created and this is computed
// within FrameLayerBuilder
GetParent()->InvalidateFrameWithRect(aRect + GetPosition(), aDisplayItemKey);
}
static void
PaintTableCellSelection(nsIFrame* aFrame, DrawTarget* aDrawTarget,
const nsRect& aRect, nsPoint aPt)
{
static_cast<nsTableCellFrame*>(aFrame)->DecorateForSelection(aDrawTarget,
aPt);
}
bool
nsTableCellFrame::ShouldPaintBordersAndBackgrounds() const
{
// If we're not visible, we don't paint.
if (!StyleVisibility()->IsVisible()) {
return false;
}
// Consider 'empty-cells', but only in separated borders mode.
if (!GetContentEmpty()) {
return true;
}
nsTableFrame* tableFrame = GetTableFrame();
if (tableFrame->IsBorderCollapse()) {
return true;
}
return StyleTableBorder()->mEmptyCells == NS_STYLE_TABLE_EMPTY_CELLS_SHOW;
}
bool
nsTableCellFrame::ShouldPaintBackground(nsDisplayListBuilder* aBuilder)
{
return ShouldPaintBordersAndBackgrounds() && IsVisibleInSelection(aBuilder);
}
void
nsTableCellFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
DO_GLOBAL_REFLOW_COUNT_DSP("nsTableCellFrame");
if (ShouldPaintBordersAndBackgrounds()) {
// display outset box-shadows if we need to.
bool hasBoxShadow = !!StyleEffects()->mBoxShadow;
if (hasBoxShadow) {
aLists.BorderBackground()->AppendNewToTop(
new (aBuilder) nsDisplayBoxShadowOuter(aBuilder, this));
}
// display background if we need to.
if (aBuilder->IsForEventDelivery() ||
!StyleBackground()->IsTransparent() ||
StyleDisplay()->mAppearance) {
nsDisplayBackgroundImage::AppendBackgroundItemsToTop(aBuilder,
this,
GetRectRelativeToSelf(),
aLists.BorderBackground());
}
// display inset box-shadows if we need to.
if (hasBoxShadow) {
aLists.BorderBackground()->AppendNewToTop(
new (aBuilder) nsDisplayBoxShadowInner(aBuilder, this));
}
// display borders if we need to
ProcessBorders(GetTableFrame(), aBuilder, aLists);
// and display the selection border if we need to
if (IsSelected()) {
aLists.BorderBackground()->AppendNewToTop(new (aBuilder)
nsDisplayGeneric(aBuilder, this, ::PaintTableCellSelection,
"TableCellSelection",
nsDisplayItem::TYPE_TABLE_CELL_SELECTION));
}
}
// the 'empty-cells' property has no effect on 'outline'
DisplayOutline(aBuilder, aLists);
// Push a null 'current table item' so that descendant tables can't
// accidentally mess with our table
nsAutoPushCurrentTableItem pushTableItem;
pushTableItem.Push(aBuilder, nullptr);
nsIFrame* kid = mFrames.FirstChild();
NS_ASSERTION(kid && !kid->GetNextSibling(), "Table cells should have just one child");
// The child's background will go in our BorderBackground() list.
// This isn't a problem since it won't have a real background except for
// event handling. We do not call BuildDisplayListForNonBlockChildren
// because that/ would put the child's background in the Content() list
// which isn't right (e.g., would end up on top of our child floats for
// event handling).
BuildDisplayListForChild(aBuilder, kid, aDirtyRect, aLists);
}
nsIFrame::LogicalSides
nsTableCellFrame::GetLogicalSkipSides(const ReflowInput* aReflowInput) const
{
if (MOZ_UNLIKELY(StyleBorder()->mBoxDecorationBreak ==
StyleBoxDecorationBreak::Clone)) {
return LogicalSides();
}
LogicalSides skip;
if (nullptr != GetPrevInFlow()) {
skip |= eLogicalSideBitsBStart;
}
if (nullptr != GetNextInFlow()) {
skip |= eLogicalSideBitsBEnd;
}
return skip;
}
/* virtual */ nsMargin
nsTableCellFrame::GetBorderOverflow()
{
return nsMargin(0, 0, 0, 0);
}
// Align the cell's child frame within the cell
void nsTableCellFrame::BlockDirAlignChild(WritingMode aWM, nscoord aMaxAscent)
{
/* It's the 'border-collapse' on the table that matters */
LogicalMargin borderPadding = GetLogicalUsedBorderAndPadding(aWM);
nscoord bStartInset = borderPadding.BStart(aWM);
nscoord bEndInset = borderPadding.BEnd(aWM);
uint8_t verticalAlignFlags = GetVerticalAlign();
nscoord bSize = BSize(aWM);
nsIFrame* firstKid = mFrames.FirstChild();
nsSize containerSize = mRect.Size();
NS_ASSERTION(firstKid, "Frame construction error, a table cell always has "
"an inner cell frame");
LogicalRect kidRect = firstKid->GetLogicalRect(aWM, containerSize);
nscoord childBSize = kidRect.BSize(aWM);
// Vertically align the child
nscoord kidBStart = 0;
switch (verticalAlignFlags)
{
case NS_STYLE_VERTICAL_ALIGN_BASELINE:
// Align the baselines of the child frame with the baselines of
// other children in the same row which have 'vertical-align: baseline'
kidBStart = bStartInset + aMaxAscent - GetCellBaseline();
break;
case NS_STYLE_VERTICAL_ALIGN_TOP:
// Align the top of the child frame with the top of the content area,
kidBStart = bStartInset;
break;
case NS_STYLE_VERTICAL_ALIGN_BOTTOM:
// Align the bottom of the child frame with the bottom of the content area,
kidBStart = bSize - childBSize - bEndInset;
break;
default:
case NS_STYLE_VERTICAL_ALIGN_MIDDLE:
// Align the middle of the child frame with the middle of the content area,
kidBStart = (bSize - childBSize - bEndInset + bStartInset) / 2;
}
// If the content is larger than the cell bsize, align from bStartInset
// (cell's content-box bstart edge).
kidBStart = std::max(bStartInset, kidBStart);
if (kidBStart != kidRect.BStart(aWM)) {
// Invalidate at the old position first
firstKid->InvalidateFrameSubtree();
}
firstKid->SetPosition(aWM, LogicalPoint(aWM, kidRect.IStart(aWM),
kidBStart), containerSize);
ReflowOutput desiredSize(aWM);
desiredSize.SetSize(aWM, GetLogicalSize(aWM));
nsRect overflow(nsPoint(0,0), GetSize());
overflow.Inflate(GetBorderOverflow());
desiredSize.mOverflowAreas.SetAllTo(overflow);
ConsiderChildOverflow(desiredSize.mOverflowAreas, firstKid);
FinishAndStoreOverflow(&desiredSize);
if (kidBStart != kidRect.BStart(aWM)) {
// Make sure any child views are correctly positioned. We know the inner table
// cell won't have a view
nsContainerFrame::PositionChildViews(firstKid);
// Invalidate new overflow rect
firstKid->InvalidateFrameSubtree();
}
if (HasView()) {
nsContainerFrame::SyncFrameViewAfterReflow(PresContext(), this,
GetView(),
desiredSize.VisualOverflow(), 0);
}
}
bool
nsTableCellFrame::ComputeCustomOverflow(nsOverflowAreas& aOverflowAreas)
{
nsRect bounds(nsPoint(0,0), GetSize());
bounds.Inflate(GetBorderOverflow());
aOverflowAreas.UnionAllWith(bounds);
return nsContainerFrame::ComputeCustomOverflow(aOverflowAreas);
}
// Per CSS 2.1, we map 'sub', 'super', 'text-top', 'text-bottom',
// length, percentage, and calc() values to 'baseline'.
uint8_t
nsTableCellFrame::GetVerticalAlign() const
{
const nsStyleCoord& verticalAlign = StyleDisplay()->mVerticalAlign;
if (verticalAlign.GetUnit() == eStyleUnit_Enumerated) {
uint8_t value = verticalAlign.GetIntValue();
if (value == NS_STYLE_VERTICAL_ALIGN_TOP ||
value == NS_STYLE_VERTICAL_ALIGN_MIDDLE ||
value == NS_STYLE_VERTICAL_ALIGN_BOTTOM) {
return value;
}
}
return NS_STYLE_VERTICAL_ALIGN_BASELINE;
}
bool
nsTableCellFrame::CellHasVisibleContent(nscoord height,
nsTableFrame* tableFrame,
nsIFrame* kidFrame)
{
// see http://www.w3.org/TR/CSS21/tables.html#empty-cells
if (height > 0)
return true;
if (tableFrame->IsBorderCollapse())
return true;
for (nsIFrame* innerFrame : kidFrame->PrincipalChildList()) {
nsIAtom* frameType = innerFrame->GetType();
if (nsGkAtoms::textFrame == frameType) {
nsTextFrame* textFrame = static_cast<nsTextFrame*>(innerFrame);
if (textFrame->HasNoncollapsedCharacters())
return true;
}
else if (nsGkAtoms::placeholderFrame != frameType) {
return true;
}
else {
nsIFrame *floatFrame = nsLayoutUtils::GetFloatFromPlaceholder(innerFrame);
if (floatFrame)
return true;
}
}
return false;
}
nscoord
nsTableCellFrame::GetCellBaseline() const
{
// Ignore the position of the inner frame relative to the cell frame
// since we want the position as though the inner were top-aligned.
nsIFrame *inner = mFrames.FirstChild();
nscoord borderPadding = GetUsedBorderAndPadding().top;
nscoord result;
if (nsLayoutUtils::GetFirstLineBaseline(GetWritingMode(), inner, &result))
return result + borderPadding;
return inner->GetContentRectRelativeToSelf().YMost() +
borderPadding;
}
int32_t nsTableCellFrame::GetRowSpan()
{
int32_t rowSpan=1;
nsGenericHTMLElement *hc = nsGenericHTMLElement::FromContent(mContent);
// Don't look at the content's rowspan if we're a pseudo cell
if (hc && !StyleContext()->GetPseudo()) {
const nsAttrValue* attr = hc->GetParsedAttr(nsGkAtoms::rowspan);
// Note that we don't need to check the tag name, because only table cells
// and table headers parse the "rowspan" attribute into an integer.
if (attr && attr->Type() == nsAttrValue::eInteger) {
rowSpan = attr->GetIntegerValue();
}
}
return rowSpan;
}
int32_t nsTableCellFrame::GetColSpan()
{
int32_t colSpan=1;
nsGenericHTMLElement *hc = nsGenericHTMLElement::FromContent(mContent);
// Don't look at the content's colspan if we're a pseudo cell
if (hc && !StyleContext()->GetPseudo()) {
const nsAttrValue* attr = hc->GetParsedAttr(nsGkAtoms::colspan);
// Note that we don't need to check the tag name, because only table cells
// and table headers parse the "colspan" attribute into an integer.
if (attr && attr->Type() == nsAttrValue::eInteger) {
colSpan = attr->GetIntegerValue();
}
}
return colSpan;
}
/* virtual */ nscoord
nsTableCellFrame::GetMinISize(nsRenderingContext *aRenderingContext)
{
nscoord result = 0;
DISPLAY_MIN_WIDTH(this, result);
nsIFrame *inner = mFrames.FirstChild();
result = nsLayoutUtils::IntrinsicForContainer(aRenderingContext, inner,
nsLayoutUtils::MIN_ISIZE);
return result;
}
/* virtual */ nscoord
nsTableCellFrame::GetPrefISize(nsRenderingContext *aRenderingContext)
{
nscoord result = 0;
DISPLAY_PREF_WIDTH(this, result);
nsIFrame *inner = mFrames.FirstChild();
result = nsLayoutUtils::IntrinsicForContainer(aRenderingContext, inner,
nsLayoutUtils::PREF_ISIZE);
return result;
}
/* virtual */ nsIFrame::IntrinsicISizeOffsetData
nsTableCellFrame::IntrinsicISizeOffsets(nscoord aPercentageBasis)
{
IntrinsicISizeOffsetData result =
nsContainerFrame::IntrinsicISizeOffsets(aPercentageBasis);
result.hMargin = 0;
WritingMode wm = GetWritingMode();
result.hBorder = GetBorderWidth(wm).IStartEnd(wm);
return result;
}
#ifdef DEBUG
#define PROBABLY_TOO_LARGE 1000000
static
void DebugCheckChildSize(nsIFrame* aChild,
ReflowOutput& aMet)
{
WritingMode wm = aMet.GetWritingMode();
if ((aMet.ISize(wm) < 0) || (aMet.ISize(wm) > PROBABLY_TOO_LARGE)) {
printf("WARNING: cell content %p has large inline size %d \n",
static_cast<void*>(aChild), int32_t(aMet.ISize(wm)));
}
}
#endif
// the computed bsize for the cell, which descendants use for percent bsize calculations
// it is the bsize (minus border, padding) of the cell's first in flow during its final
// reflow without an unconstrained bsize.
static nscoord
CalcUnpaginatedBSize(nsTableCellFrame& aCellFrame,
nsTableFrame& aTableFrame,
nscoord aBlockDirBorderPadding)
{
const nsTableCellFrame* firstCellInFlow =
static_cast<nsTableCellFrame*>(aCellFrame.FirstInFlow());
nsTableFrame* firstTableInFlow =
static_cast<nsTableFrame*>(aTableFrame.FirstInFlow());
nsTableRowFrame* row =
static_cast<nsTableRowFrame*>(firstCellInFlow->GetParent());
nsTableRowGroupFrame* firstRGInFlow =
static_cast<nsTableRowGroupFrame*>(row->GetParent());
int32_t rowIndex;
firstCellInFlow->GetRowIndex(rowIndex);
int32_t rowSpan = aTableFrame.GetEffectiveRowSpan(*firstCellInFlow);
nscoord computedBSize = firstTableInFlow->GetRowSpacing(rowIndex,
rowIndex + rowSpan - 1);
computedBSize -= aBlockDirBorderPadding;
int32_t rowX;
for (row = firstRGInFlow->GetFirstRow(), rowX = 0; row; row = row->GetNextRow(), rowX++) {
if (rowX > rowIndex + rowSpan - 1) {
break;
}
else if (rowX >= rowIndex) {
computedBSize += row->GetUnpaginatedBSize();
}
}
return computedBSize;
}
void
nsTableCellFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus)
{
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsTableCellFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
if (aReflowInput.mFlags.mSpecialBSizeReflow) {
FirstInFlow()->AddStateBits(NS_TABLE_CELL_HAD_SPECIAL_REFLOW);
}
// see if a special bsize reflow needs to occur due to having a pct height
nsTableFrame::CheckRequestSpecialBSizeReflow(aReflowInput);
aStatus = NS_FRAME_COMPLETE;
WritingMode wm = aReflowInput.GetWritingMode();
LogicalSize availSize(wm, aReflowInput.AvailableISize(),
aReflowInput.AvailableBSize());
LogicalMargin borderPadding = aReflowInput.ComputedLogicalPadding();
LogicalMargin border = GetBorderWidth(wm);
borderPadding += border;
// reduce available space by insets, if we're in a constrained situation
availSize.ISize(wm) -= borderPadding.IStartEnd(wm);
if (NS_UNCONSTRAINEDSIZE != availSize.BSize(wm)) {
availSize.BSize(wm) -= borderPadding.BStartEnd(wm);
}
// Try to reflow the child into the available space. It might not
// fit or might need continuing.
if (availSize.BSize(wm) < 0) {
availSize.BSize(wm) = 1;
}
ReflowOutput kidSize(wm, aDesiredSize.mFlags);
kidSize.ClearSize();
SetPriorAvailISize(aReflowInput.AvailableISize());
nsIFrame* firstKid = mFrames.FirstChild();
NS_ASSERTION(firstKid, "Frame construction error, a table cell always has an inner cell frame");
nsTableFrame* tableFrame = GetTableFrame();
if (aReflowInput.mFlags.mSpecialBSizeReflow) {
const_cast<ReflowInput&>(aReflowInput).
SetComputedBSize(BSize(wm) - borderPadding.BStartEnd(wm));
DISPLAY_REFLOW_CHANGE();
}
else if (aPresContext->IsPaginated()) {
nscoord computedUnpaginatedBSize =
CalcUnpaginatedBSize((nsTableCellFrame&)*this,
*tableFrame, borderPadding.BStartEnd(wm));
if (computedUnpaginatedBSize > 0) {
const_cast<ReflowInput&>(aReflowInput).SetComputedBSize(computedUnpaginatedBSize);
DISPLAY_REFLOW_CHANGE();
}
}
else {
SetHasPctOverBSize(false);
}
WritingMode kidWM = firstKid->GetWritingMode();
ReflowInput kidReflowInput(aPresContext, aReflowInput, firstKid,
availSize.ConvertTo(kidWM, wm));
// Don't be a percent height observer if we're in the middle of
// special-bsize reflow, in case we get an accidental NotifyPercentBSize()
// call (which we shouldn't honor during special-bsize reflow)
if (!aReflowInput.mFlags.mSpecialBSizeReflow) {
// mPercentBSizeObserver is for children of cells in quirks mode,
// but only those than are tables in standards mode. NeedsToObserve
// will determine how far this is propagated to descendants.
kidReflowInput.mPercentBSizeObserver = this;
}
// Don't propagate special bsize reflow state to our kids
kidReflowInput.mFlags.mSpecialBSizeReflow = false;
if (aReflowInput.mFlags.mSpecialBSizeReflow ||
FirstInFlow()->HasAnyStateBits(NS_TABLE_CELL_HAD_SPECIAL_REFLOW)) {
// We need to force the kid to have mBResize set if we've had a
// special reflow in the past, since the non-special reflow needs to
// resize back to what it was without the special bsize reflow.
kidReflowInput.SetBResize(true);
}
nsSize containerSize =
aReflowInput.ComputedSizeAsContainerIfConstrained();
LogicalPoint kidOrigin(wm, borderPadding.IStart(wm),
borderPadding.BStart(wm));
nsRect origRect = firstKid->GetRect();
nsRect origVisualOverflow = firstKid->GetVisualOverflowRect();
bool firstReflow = firstKid->HasAnyStateBits(NS_FRAME_FIRST_REFLOW);
ReflowChild(firstKid, aPresContext, kidSize, kidReflowInput,
wm, kidOrigin, containerSize, 0, aStatus);
if (NS_FRAME_OVERFLOW_IS_INCOMPLETE(aStatus)) {
// Don't pass OVERFLOW_INCOMPLETE through tables until they can actually handle it
//XXX should paginate overflow as overflow, but not in this patch (bug 379349)
NS_FRAME_SET_INCOMPLETE(aStatus);
printf("Set table cell incomplete %p\n", static_cast<void*>(this));
}
// XXXbz is this invalidate actually needed, really?
if (HasAnyStateBits(NS_FRAME_IS_DIRTY)) {
InvalidateFrameSubtree();
}
#ifdef DEBUG
DebugCheckChildSize(firstKid, kidSize);
#endif
// 0 dimensioned cells need to be treated specially in Standard/NavQuirks mode
// see testcase "emptyCells.html"
nsIFrame* prevInFlow = GetPrevInFlow();
bool isEmpty;
if (prevInFlow) {
isEmpty = static_cast<nsTableCellFrame*>(prevInFlow)->GetContentEmpty();
} else {
isEmpty = !CellHasVisibleContent(kidSize.Height(), tableFrame, firstKid);
}
SetContentEmpty(isEmpty);
// Place the child
FinishReflowChild(firstKid, aPresContext, kidSize, &kidReflowInput,
wm, kidOrigin, containerSize, 0);
nsTableFrame::InvalidateTableFrame(firstKid, origRect, origVisualOverflow,
firstReflow);
// first, compute the bsize which can be set w/o being restricted by
// available bsize
LogicalSize cellSize(wm);
cellSize.BSize(wm) = kidSize.BSize(wm);
if (NS_UNCONSTRAINEDSIZE != cellSize.BSize(wm)) {
cellSize.BSize(wm) += borderPadding.BStartEnd(wm);
}
// next determine the cell's isize
cellSize.ISize(wm) = kidSize.ISize(wm); // at this point, we've factored in the cell's style attributes
// factor in border and padding
if (NS_UNCONSTRAINEDSIZE != cellSize.ISize(wm)) {
cellSize.ISize(wm) += borderPadding.IStartEnd(wm);
}
// set the cell's desired size and max element size
aDesiredSize.SetSize(wm, cellSize);
// the overflow area will be computed when BlockDirAlignChild() gets called
if (aReflowInput.mFlags.mSpecialBSizeReflow) {
if (aDesiredSize.BSize(wm) > BSize(wm)) {
// set a bit indicating that the pct bsize contents exceeded
// the height that they could honor in the pass 2 reflow
SetHasPctOverBSize(true);
}
if (NS_UNCONSTRAINEDSIZE == aReflowInput.AvailableBSize()) {
aDesiredSize.BSize(wm) = BSize(wm);
}
}