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RetroZilla/layout/tables/nsTableCellFrame.cpp
Ryan Nematz 2f2ae146c0 first commit
2015-10-20 23:03:22 -04:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsTableFrame.h"
#include "nsTableColFrame.h"
#include "nsTableCellFrame.h"
#include "nsTableFrame.h"
#include "nsTableRowGroupFrame.h"
#include "nsTablePainter.h"
#include "nsReflowPath.h"
#include "nsStyleContext.h"
#include "nsStyleConsts.h"
#include "nsPresContext.h"
#include "nsIRenderingContext.h"
#include "nsCSSRendering.h"
#include "nsIContent.h"
#include "nsGenericHTMLElement.h"
#include "nsHTMLParts.h"
#include "nsHTMLAtoms.h"
#include "nsVoidArray.h"
#include "nsIView.h"
#include "nsLayoutAtoms.h"
#include "nsIPresShell.h"
#include "nsCOMPtr.h"
#include "nsIDOMHTMLTableCellElement.h"
#ifdef ACCESSIBILITY
#include "nsIAccessibilityService.h"
#endif
#include "nsIServiceManager.h"
#include "nsIDOMNode.h"
#include "nsINameSpaceManager.h"
//TABLECELL SELECTION
#include "nsIFrameSelection.h"
#include "nsILookAndFeel.h"
nsTableCellFrame::nsTableCellFrame()
{
mBits.mColIndex = 0;
mPriorAvailWidth = 0;
SetContentEmpty(PR_FALSE);
SetNeedSpecialReflow(PR_FALSE);
SetHadSpecialReflow(PR_FALSE);
SetHasPctOverHeight(PR_FALSE);
SetNeedPass2Reflow(PR_TRUE);
#ifdef DEBUG_TABLE_REFLOW_TIMING
mTimer = new nsReflowTimer(this);
mBlockTimer = new nsReflowTimer(this);
#endif
}
nsTableCellFrame::~nsTableCellFrame()
{
#ifdef DEBUG_TABLE_REFLOW_TIMING
nsTableFrame::DebugReflowDone(this);
#endif
}
nsTableCellFrame*
nsTableCellFrame::GetNextCell() const
{
nsIFrame* childFrame = GetNextSibling();
while (childFrame) {
if (IS_TABLE_CELL(childFrame->GetType())) {
return (nsTableCellFrame*)childFrame;
}
childFrame = childFrame->GetNextSibling();
}
return nsnull;
}
NS_IMETHODIMP
nsTableCellFrame::Init(nsPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParent,
nsStyleContext* aContext,
nsIFrame* aPrevInFlow)
{
nsresult rv;
// Let the base class do its initialization
rv = nsHTMLContainerFrame::Init(aPresContext, aContent, aParent, aContext,
aPrevInFlow);
if (aPrevInFlow) {
// Set the column index
nsTableCellFrame* cellFrame = (nsTableCellFrame*)aPrevInFlow;
PRInt32 colIndex;
cellFrame->GetColIndex(colIndex);
SetColIndex(colIndex);
}
return rv;
}
// nsIPercentHeightObserver methods
void
nsTableCellFrame::NotifyPercentHeight(const nsHTMLReflowState& aReflowState)
{
if (!NeedSpecialReflow()) {
// Only initiate a special reflow if we will be able to construct a computed height
// on the cell that will result in the frame getting a computed height. This can only
// happen (but not sufficient) if there is no computed height already set between the
// initiating frame and the cell.
for (const nsHTMLReflowState* rs = aReflowState.parentReflowState; rs; rs = rs->parentReflowState) {
if ((NS_UNCONSTRAINEDSIZE != rs->mComputedHeight) && (0 != rs->mComputedHeight)) {
return;
}
// stop when we reach the cell frame
if (rs->frame == this) {
nsTableFrame::RequestSpecialHeightReflow(*rs);
return;
}
}
NS_ASSERTION(PR_FALSE, "program error in NotifyPercentHeight");
}
}
// The cell needs to observe its block and things inside its block but nothing below that
PRBool
nsTableCellFrame::NeedsToObserve(const nsHTMLReflowState& aReflowState)
{
PRBool result = PR_FALSE;
const nsHTMLReflowState* parentRS = aReflowState.parentReflowState;
if (parentRS && (parentRS->mPercentHeightObserver == this)) { // cell observes the parent
result = PR_TRUE;
parentRS = parentRS->parentReflowState;
if (parentRS && (parentRS->mPercentHeightObserver == this)) { // cell observers the grand parent
parentRS = parentRS->parentReflowState;
if (parentRS && (parentRS->mPercentHeightObserver == this)) {
// cell observes the great grand parent, so we have gone too deep
result = PR_FALSE;
}
}
}
return result;
}
nsresult
nsTableCellFrame::GetRowIndex(PRInt32 &aRowIndex) const
{
nsresult result;
nsTableRowFrame* row = NS_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(PRInt32 &aColIndex) const
{
if (mPrevInFlow) {
return ((nsTableCellFrame*)GetFirstInFlow())->GetColIndex(aColIndex);
}
else {
aColIndex = mBits.mColIndex;
return NS_OK;
}
}
NS_IMETHODIMP
nsTableCellFrame::AttributeChanged(nsIContent* aChild,
PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aModType)
{
// let the table frame decide what to do
nsTableFrame* tableFrame = nsnull;
nsresult rv = nsTableFrame::GetTableFrame(this, tableFrame);
if ((NS_SUCCEEDED(rv)) && (tableFrame)) {
tableFrame->AttributeChangedFor(this, aChild, aAttribute);
}
return NS_OK;
}
void nsTableCellFrame::SetPass1MaxElementWidth(nscoord aMaxWidth,
nscoord aMaxElementWidth)
{
nscoord maxElemWidth = aMaxElementWidth;
if (eCompatibility_NavQuirks == GetPresContext()->CompatibilityMode()) {
// check for fixed width and not nowrap and not pre
const nsStylePosition* stylePosition = GetStylePosition();
if (stylePosition->mWidth.GetUnit() == eStyleUnit_Coord) {
if (GetContent()->HasAttr(kNameSpaceID_None, nsHTMLAtoms::nowrap)) {
// set the max element size to the value of the fixed width (NAV/IE quirk)
maxElemWidth = NS_MAX(maxElemWidth, stylePosition->mWidth.GetCoordValue());
}
}
}
mPass1MaxElementWidth = maxElemWidth;
}
NS_IMETHODIMP
nsTableCellFrame::AppendFrames(nsIAtom* aListName,
nsIFrame* aFrameList)
{
NS_PRECONDITION(PR_FALSE, "unsupported operation");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsTableCellFrame::InsertFrames(nsIAtom* aListName,
nsIFrame* aPrevFrame,
nsIFrame* aFrameList)
{
NS_PRECONDITION(PR_FALSE, "unsupported operation");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsTableCellFrame::RemoveFrame(nsIAtom* aListName,
nsIFrame* aOldFrame)
{
NS_PRECONDITION(PR_FALSE, "unsupported operation");
return NS_ERROR_NOT_IMPLEMENTED;
}
void nsTableCellFrame::SetColIndex(PRInt32 aColIndex)
{
mBits.mColIndex = aColIndex;
}
//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;
}
nsresult
nsTableCellFrame::DecorateForSelection(nsPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsStyleBackground *aStyleColor)
{
PRInt16 displaySelection;
displaySelection = DisplaySelection(aPresContext);
if (displaySelection) {
PRBool isSelected =
(GetStateBits() & NS_FRAME_SELECTED_CONTENT) == NS_FRAME_SELECTED_CONTENT;
if (isSelected) {
nsIFrameSelection *frameSelection =
aPresContext->PresShell()->FrameSelection();
PRBool tableCellSelectionMode;
nsresult result =
frameSelection->GetTableCellSelection(&tableCellSelectionMode);
if (NS_SUCCEEDED(result) && tableCellSelectionMode) {
nscolor bordercolor;
if (displaySelection == nsISelectionController::SELECTION_DISABLED) {
bordercolor = NS_RGB(176,176,176);// disabled color
}
else {
aPresContext->LookAndFeel()->
GetColor(nsILookAndFeel::eColor_TextSelectBackground,
bordercolor);
}
PRInt16 t2p = (PRInt16) aPresContext->PixelsToTwips();
if ((mRect.width >(3*t2p)) && (mRect.height > (3*t2p)))
{
//compare bordercolor to ((nsStyleColor *)myColor)->mBackgroundColor)
bordercolor = EnsureDifferentColors(bordercolor, aStyleColor->mBackgroundColor);
//outerrounded
aRenderingContext.SetColor(bordercolor);
aRenderingContext.DrawLine(t2p, 0, mRect.width, 0);
aRenderingContext.DrawLine(0, t2p, 0, mRect.height);
aRenderingContext.DrawLine(t2p, mRect.height, mRect.width, mRect.height);
aRenderingContext.DrawLine(mRect.width, t2p, mRect.width, mRect.height);
//middle
aRenderingContext.DrawRect(t2p, t2p, mRect.width-t2p, mRect.height-t2p);
//shading
aRenderingContext.DrawLine(2*t2p, mRect.height-2*t2p, mRect.width-t2p, mRect.height- (2*t2p));
aRenderingContext.DrawLine(mRect.width - (2*t2p), 2*t2p, mRect.width - (2*t2p), mRect.height-t2p);
}
}
}
}
return NS_OK;
}
void
nsTableCellFrame::PaintUnderlay(nsPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
PRUint32& aFlags,
const nsStyleBorder& aStyleBorder,
const nsStylePadding& aStylePadding,
const nsStyleTableBorder& aCellTableStyle)
{
nsRect rect(0, 0, mRect.width, mRect.height);
nsCSSRendering::PaintBackground(&aPresContext, aRenderingContext, this,
aDirtyRect, rect, aStyleBorder, aStylePadding,
PR_TRUE);
PRIntn skipSides = GetSkipSides();
if (NS_STYLE_TABLE_EMPTY_CELLS_SHOW == aCellTableStyle.mEmptyCells ||
!GetContentEmpty()) {
nsCSSRendering::PaintBorder(&aPresContext, aRenderingContext, this,
aDirtyRect, rect, aStyleBorder, mStyleContext, skipSides);
}
}
NS_IMETHODIMP
nsTableCellFrame::Paint(nsPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer,
PRUint32 aFlags)
{
NS_ENSURE_TRUE(aPresContext, NS_ERROR_NULL_POINTER);
PRBool isVisible;
if (NS_SUCCEEDED(IsVisibleForPainting(aPresContext, aRenderingContext, PR_FALSE, &isVisible)) && !isVisible) {
return NS_OK;
}
PRBool paintChildren = PR_TRUE;
if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) {
const nsStyleBorder* myBorder = nsnull;
const nsStylePadding* myPadding = nsnull;
const nsStyleTableBorder* cellTableStyle = nsnull;
const nsStyleVisibility* vis = GetStyleVisibility();
if (vis->IsVisible()) {
myBorder = GetStyleBorder();
myPadding = GetStylePadding();
cellTableStyle = GetStyleTableBorder();
// draw the border & background only when there is content or showing empty cells
if (NS_STYLE_TABLE_EMPTY_CELLS_HIDE != cellTableStyle->mEmptyCells ||
!GetContentEmpty()) {
PaintUnderlay(*aPresContext, aRenderingContext, aDirtyRect, aFlags,
*myBorder, *myPadding, *cellTableStyle);
}
// Paint outline
nsRect rect(0, 0, mRect.width, mRect.height);
const nsStyleOutline* myOutline = GetStyleOutline();
nsCSSRendering::PaintOutline(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *myBorder, *myOutline,
mStyleContext, 0);
const nsStyleBackground* myColor = GetStyleBackground();
DecorateForSelection(aPresContext, aRenderingContext,myColor); //ignore return value
}
paintChildren = !(aFlags & NS_PAINT_FLAG_TABLE_CELL_BG_PASS);
//flags were for us; remove them for our children
aFlags &= ~ (NS_PAINT_FLAG_TABLE_CELL_BG_PASS | NS_PAINT_FLAG_TABLE_BG_PAINT);
}
#ifdef DEBUG
// for debug...
if ((NS_FRAME_PAINT_LAYER_DEBUG == aWhichLayer) && GetShowFrameBorders()) {
aRenderingContext.SetColor(NS_RGB(0, 0, 128));
aRenderingContext.DrawRect(0, 0, mRect.width, mRect.height);
}
#endif
// paint the children unless we've been told not to
if (paintChildren) {
const nsStyleDisplay* disp = GetStyleDisplay();
// if the cell originates in a row and/or col that is collapsed, the
// bottom and/or right portion of the cell is painted by translating
// the rendering context.
nsPoint offset;
GetCollapseOffset(offset);
PRBool pushed = PR_FALSE;
if ((0 != offset.x) || (0 != offset.y)) {
aRenderingContext.PushState();
pushed = PR_TRUE;
aRenderingContext.Translate(offset.x, offset.y);
aRenderingContext.SetClipRect(nsRect(-offset.x, -offset.y, mRect.width, mRect.height),
nsClipCombine_kIntersect);
}
else {
// XXXldb HIDDEN should really create a scrollframe,
// but use |IsTableClip| here since it doesn't.
if (disp->IsTableClip() ||
(HasPctOverHeight() && eCompatibility_NavQuirks == aPresContext->CompatibilityMode())) {
aRenderingContext.PushState();
pushed = PR_TRUE;
SetOverflowClipRect(aRenderingContext);
}
}
PaintChildren(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer, aFlags);
if (pushed) {
aRenderingContext.PopState();
}
}
DO_GLOBAL_REFLOW_COUNT_DSP_J("nsTableCellFrame", &aRenderingContext, 0);
return NS_OK;
/*nsFrame::Paint(aPresContext,
aRenderingContext,
aDirtyRect,
aWhichLayer);*/
}
NS_IMETHODIMP
nsTableCellFrame::GetFrameForPoint(const nsPoint& aPoint,
nsFramePaintLayer aWhichLayer,
nsIFrame** aFrame)
{
// this should act like a block, so we need to override
return GetFrameForPointUsing(aPoint, nsnull, aWhichLayer, (aWhichLayer == NS_FRAME_PAINT_LAYER_BACKGROUND), aFrame);
}
//null range means the whole thing
NS_IMETHODIMP
nsTableCellFrame::SetSelected(nsPresContext* aPresContext,
nsIDOMRange* aRange,
PRBool aSelected,
nsSpread aSpread)
{
//traverse through children unselect tables
#if 0
if ((aSpread == eSpreadDown)){
nsIFrame* kid = GetFirstChild(nsnull);
while (nsnull != kid) {
kid->SetSelected(nsnull, aSelected, eSpreadDown);
kid = kid->GetNextSibling();
}
}
//return nsFrame::SetSelected(aRange,aSelected,eSpreadNone);
#endif
// Must call base class to set mSelected state and trigger repaint of frame
// Note that in current version, aRange and aSpread are ignored,
// only this frame is considered
nsFrame::SetSelected(aPresContext, aRange, aSelected, aSpread);
PRBool tableCellSelectionMode;
nsresult result = aPresContext->PresShell()->FrameSelection()->GetTableCellSelection(&tableCellSelectionMode);
if (NS_SUCCEEDED(result) && tableCellSelectionMode) {
// Selection can affect content, border and outline
Invalidate(GetOverflowRect(), PR_FALSE);
}
return NS_OK;
}
PRIntn
nsTableCellFrame::GetSkipSides() const
{
PRIntn skip = 0;
if (nsnull != mPrevInFlow) {
skip |= 1 << NS_SIDE_TOP;
}
if (nsnull != mNextInFlow) {
skip |= 1 << NS_SIDE_BOTTOM;
}
return skip;
}
PRBool nsTableCellFrame::ParentDisablesSelection() const //override default behavior
{
PRBool returnval;
if (NS_FAILED(GetSelected(&returnval)))
return PR_FALSE;
if (returnval)
return PR_TRUE;
return nsFrame::ParentDisablesSelection();
}
/* virtual */ void
nsTableCellFrame::GetSelfOverflow(nsRect& aOverflowArea)
{
aOverflowArea = nsRect(nsPoint(0,0), GetSize());
}
// Align the cell's child frame within the cell
void nsTableCellFrame::VerticallyAlignChild(const nsHTMLReflowState& aReflowState,
nscoord aMaxAscent)
{
const nsStyleTextReset* textStyle = GetStyleTextReset();
/* XXX: remove tableFrame when border-collapse inherits */
nsPresContext* presContext = GetPresContext();
GET_PIXELS_TO_TWIPS(presContext, p2t);
nsMargin borderPadding = nsTableFrame::GetBorderPadding(aReflowState, p2t, this);
nscoord topInset = borderPadding.top;
nscoord bottomInset = borderPadding.bottom;
// As per bug 10207, we map 'sub', 'super', 'text-top', 'text-bottom',
// length and percentage values to 'baseline'
// XXX It seems that we don't get to see length and percentage values here
// because the Style System has already fixed the error and mapped them
// to whatever is inherited from the parent, i.e, 'middle' in most cases.
PRUint8 verticalAlignFlags = NS_STYLE_VERTICAL_ALIGN_BASELINE;
if (textStyle->mVerticalAlign.GetUnit() == eStyleUnit_Enumerated) {
verticalAlignFlags = textStyle->mVerticalAlign.GetIntValue();
if (verticalAlignFlags != NS_STYLE_VERTICAL_ALIGN_TOP &&
verticalAlignFlags != NS_STYLE_VERTICAL_ALIGN_MIDDLE &&
verticalAlignFlags != NS_STYLE_VERTICAL_ALIGN_BOTTOM)
{
verticalAlignFlags = NS_STYLE_VERTICAL_ALIGN_BASELINE;
}
}
nscoord height = mRect.height;
nsIFrame* firstKid = mFrames.FirstChild();
NS_ASSERTION(firstKid, "Frame construction error, a table cell always has an inner cell frame");
nsRect kidRect = firstKid->GetRect();
nscoord childHeight = kidRect.height;
// Vertically align the child
nscoord kidYTop = 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'
kidYTop = topInset + aMaxAscent - GetDesiredAscent();
break;
case NS_STYLE_VERTICAL_ALIGN_TOP:
// Align the top of the child frame with the top of the content area,
kidYTop = topInset;
break;
case NS_STYLE_VERTICAL_ALIGN_BOTTOM:
// Align the bottom of the child frame with the bottom of the content area,
kidYTop = height - childHeight - bottomInset;
break;
default:
case NS_STYLE_VERTICAL_ALIGN_MIDDLE:
// Align the middle of the child frame with the middle of the content area,
kidYTop = (height - childHeight - bottomInset + topInset) / 2;
kidYTop = nsTableFrame::RoundToPixel(kidYTop,
presContext->ScaledPixelsToTwips(),
eAlwaysRoundDown);
}
// if the content is larger than the cell height align from top
kidYTop = PR_MAX(0, kidYTop);
firstKid->SetPosition(nsPoint(kidRect.x, kidYTop));
nsHTMLReflowMetrics desiredSize(PR_FALSE);
desiredSize.width = mRect.width;
desiredSize.height = mRect.height;
GetSelfOverflow(desiredSize.mOverflowArea);
ConsiderChildOverflow(desiredSize.mOverflowArea, firstKid);
FinishAndStoreOverflow(&desiredSize);
if (kidYTop != kidRect.y) {
// Make sure any child views are correctly positioned. We know the inner table
// cell won't have a view
nsContainerFrame::PositionChildViews(firstKid);
}
if (HasView()) {
nsContainerFrame::SyncFrameViewAfterReflow(presContext, this,
GetView(),
&desiredSize.mOverflowArea, 0);
}
}
// As per bug 10207, we map 'sub', 'super', 'text-top', 'text-bottom',
// length and percentage values to 'baseline'
// XXX It seems that we don't get to see length and percentage values here
// because the Style System has already fixed the error and mapped them
// to whatever is inherited from the parent, i.e, 'middle' in most cases.
PRBool
nsTableCellFrame::HasVerticalAlignBaseline()
{
const nsStyleTextReset* textStyle = GetStyleTextReset();
if (textStyle->mVerticalAlign.GetUnit() == eStyleUnit_Enumerated) {
PRUint8 verticalAlignFlags = textStyle->mVerticalAlign.GetIntValue();
if (verticalAlignFlags == NS_STYLE_VERTICAL_ALIGN_TOP ||
verticalAlignFlags == NS_STYLE_VERTICAL_ALIGN_MIDDLE ||
verticalAlignFlags == NS_STYLE_VERTICAL_ALIGN_BOTTOM)
{
return PR_FALSE;
}
}
return PR_TRUE;
}
PRInt32 nsTableCellFrame::GetRowSpan()
{
PRInt32 rowSpan=1;
nsGenericHTMLElement *hc = nsGenericHTMLElement::FromContent(mContent);
if (hc) {
const nsAttrValue* attr = hc->GetParsedAttr(nsHTMLAtoms::rowspan);
if (attr && attr->Type() == nsAttrValue::eInteger) {
rowSpan = attr->GetIntegerValue();
}
}
return rowSpan;
}
PRInt32 nsTableCellFrame::GetColSpan()
{
PRInt32 colSpan=1;
nsGenericHTMLElement *hc = nsGenericHTMLElement::FromContent(mContent);
if (hc) {
const nsAttrValue* attr = hc->GetParsedAttr(nsHTMLAtoms::colspan);
if (attr && attr->Type() == nsAttrValue::eInteger) {
colSpan = attr->GetIntegerValue();
}
}
return colSpan;
}
#ifdef DEBUG
#define PROBABLY_TOO_LARGE 1000000
static
void DebugCheckChildSize(nsIFrame* aChild,
nsHTMLReflowMetrics& aMet,
nsSize& aAvailSize,
PRBool aIsPass2Reflow)
{
if (aIsPass2Reflow) {
if ((aMet.width < 0) || (aMet.width > PROBABLY_TOO_LARGE)) {
printf("WARNING: cell content %p has large width %d \n", aChild, aMet.width);
}
}
if (aMet.mComputeMEW) {
nscoord tmp = aMet.mMaxElementWidth;
if ((tmp < 0) || (tmp > PROBABLY_TOO_LARGE)) {
printf("WARNING: cell content %p has large max element width %d \n", aChild, tmp);
}
}
}
#endif
// the computed height for the cell, which descendents use for percent height calculations
// it is the height (minus border, padding) of the cell's first in flow during its final
// reflow without an unconstrained height.
static nscoord
CalcUnpaginagedHeight(nsPresContext* aPresContext,
nsTableCellFrame& aCellFrame,
nsTableFrame& aTableFrame,
nscoord aVerticalBorderPadding)
{
const nsTableCellFrame* firstCellInFlow = (nsTableCellFrame*)aCellFrame.GetFirstInFlow();
nsTableFrame* firstTableInFlow = (nsTableFrame*)aTableFrame.GetFirstInFlow();
nsTableRowFrame* row
= NS_STATIC_CAST(nsTableRowFrame*, firstCellInFlow->GetParent());
nsTableRowGroupFrame* firstRGInFlow
= NS_STATIC_CAST(nsTableRowGroupFrame*, row->GetParent());
PRInt32 rowIndex;
firstCellInFlow->GetRowIndex(rowIndex);
PRInt32 rowSpan = aTableFrame.GetEffectiveRowSpan(*firstCellInFlow);
nscoord cellSpacing = firstTableInFlow->GetCellSpacingX();
nscoord computedHeight = ((rowSpan - 1) * cellSpacing) - aVerticalBorderPadding;
PRInt32 rowX;
for (row = firstRGInFlow->GetFirstRow(), rowX = 0; row; row = row->GetNextRow(), rowX++) {
if (rowX > rowIndex + rowSpan - 1) {
break;
}
else if (rowX >= rowIndex) {
computedHeight += row->GetUnpaginatedHeight(aPresContext);
}
}
return computedHeight;
}
NS_METHOD nsTableCellFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsTableCellFrame", aReflowState.reason);
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
#if defined DEBUG_TABLE_REFLOW_TIMING
nsTableFrame::DebugReflow(this, (nsHTMLReflowState&)aReflowState);
#endif
float p2t = aPresContext->ScaledPixelsToTwips();
// work around pixel rounding errors, round down to ensure we don't exceed the avail height in
nscoord availHeight = aReflowState.availableHeight;
if (NS_UNCONSTRAINEDSIZE != availHeight) {
availHeight = nsTableFrame::RoundToPixel(availHeight, p2t, eAlwaysRoundDown);
}
nsresult rv = NS_OK;
// see if a special height reflow needs to occur due to having a pct height
if (!NeedSpecialReflow())
nsTableFrame::CheckRequestSpecialHeightReflow(aReflowState);
// this should probably be cached somewhere
nsCompatibility compatMode = aPresContext->CompatibilityMode();
// Initialize out parameter
if (aDesiredSize.mComputeMEW) {
aDesiredSize.mMaxElementWidth = 0;
}
aStatus = NS_FRAME_COMPLETE;
nsSize availSize(aReflowState.availableWidth, availHeight);
PRBool noBorderBeforeReflow = GetContentEmpty() &&
GetStyleTableBorder()->mEmptyCells != NS_STYLE_TABLE_EMPTY_CELLS_SHOW;
/* XXX: remove tableFrame when border-collapse inherits */
nsTableFrame* tableFrame = nsnull;
rv = nsTableFrame::GetTableFrame(this, tableFrame); if (!tableFrame) ABORT1(NS_ERROR_NULL_POINTER);
nsMargin borderPadding = aReflowState.mComputedPadding;
nsMargin border;
GetBorderWidth(p2t, border);
if ((NS_UNCONSTRAINEDSIZE == availSize.width) || !noBorderBeforeReflow) {
borderPadding += border;
}
nscoord topInset = borderPadding.top;
nscoord rightInset = borderPadding.right;
nscoord bottomInset = borderPadding.bottom;
nscoord leftInset = borderPadding.left;
// reduce available space by insets, if we're in a constrained situation
if (NS_UNCONSTRAINEDSIZE!=availSize.width)
availSize.width -= leftInset+rightInset;
if (NS_UNCONSTRAINEDSIZE!=availSize.height)
availSize.height -= topInset+bottomInset;
PRBool isStyleChanged = PR_FALSE;
if (eReflowReason_Incremental == aReflowState.reason) {
// if the path has a reflow command then the cell must be the target of a style change
nsHTMLReflowCommand* command = aReflowState.path->mReflowCommand;
if (command) {
// if there are other reflow commands targeted at the cell's block, these will
// be subsumed by the style change reflow
nsReflowType type;
command->GetType(type);
if (eReflowType_StyleChanged == type) {
isStyleChanged = PR_TRUE;
}
else NS_ASSERTION(PR_FALSE, "table cell target of illegal incremental reflow type");
}
// else the reflow command will be passed down to the child
}
// Try to reflow the child into the available space. It might not
// fit or might need continuing.
if (availSize.height < 0)
availSize.height = 1;
nsHTMLReflowMetrics kidSize(NS_UNCONSTRAINEDSIZE == aReflowState.availableWidth ||
aDesiredSize.mComputeMEW,
aDesiredSize.mFlags);
kidSize.width=kidSize.height=kidSize.ascent=kidSize.descent=0;
SetPriorAvailWidth(aReflowState.availableWidth);
nsIFrame* firstKid = mFrames.FirstChild();
NS_ASSERTION(firstKid, "Frame construction error, a table cell always has an inner cell frame");
nscoord computedPaginatedHeight = 0;
if (aReflowState.mFlags.mSpecialHeightReflow ||
(HadSpecialReflow() && (eReflowReason_Incremental == aReflowState.reason))) {
((nsHTMLReflowState&)aReflowState).mComputedHeight = mRect.height - topInset - bottomInset;
DISPLAY_REFLOW_CHANGE();
}
else if (aPresContext->IsPaginated()) {
computedPaginatedHeight = CalcUnpaginagedHeight(aPresContext, (nsTableCellFrame&)*this, *tableFrame, topInset + bottomInset);
if (computedPaginatedHeight > 0) {
((nsHTMLReflowState&)aReflowState).mComputedHeight = computedPaginatedHeight;
DISPLAY_REFLOW_CHANGE();
}
}
else {
SetHasPctOverHeight(PR_FALSE);
}
// If it was a style change targeted at us, then reflow the child with a style change reason
nsReflowReason reason = aReflowState.reason;
if (isStyleChanged) {
reason = eReflowReason_StyleChange;
// the following could be optimized with a fair amount of effort
tableFrame->SetNeedStrategyInit(PR_TRUE);
}
nsHTMLReflowState kidReflowState(aPresContext, aReflowState, firstKid, availSize, reason);
// mIPercentHeightObserver is for non table related frames inside cells in quirks mode
kidReflowState.mPercentHeightObserver = (eCompatibility_NavQuirks == compatMode) ? (nsIPercentHeightObserver *)this : nsnull;
// Assume the inner child will stay positioned exactly where it is. Later in
// VerticallyAlignChild() we'll move it if it turns out to be wrong. This
// avoids excessive movement and is more stable
nsPoint kidOrigin;
if (isStyleChanged ||
(eReflowReason_Initial == aReflowState.reason) ||
(eReflowReason_StyleChange == aReflowState.reason)) {
kidOrigin.MoveTo(leftInset, topInset);
} else {
// handle percent padding-left which was 0 during initial reflow
if (eStyleUnit_Percent == aReflowState.mStylePadding->mPadding.GetLeftUnit()) {
nsRect kidRect = firstKid->GetRect();
// only move in the x direction for the same reason as above
kidOrigin.MoveTo(leftInset, kidRect.y);
firstKid->SetPosition(nsPoint(leftInset, kidRect.y));
}
kidOrigin = firstKid->GetPosition();
}
#if defined DEBUG_TABLE_REFLOW_TIMING
nsTableFrame::DebugReflow(firstKid, (nsHTMLReflowState&)kidReflowState);
#endif
nscoord priorBlockHeight = GetLastBlockHeight();
ReflowChild(firstKid, aPresContext, kidSize, kidReflowState,
kidOrigin.x, kidOrigin.y, 0, aStatus);
SetLastBlockHeight(kidSize.height);
if (isStyleChanged) {
Invalidate(GetOverflowRect(), PR_FALSE);
}
#if defined DEBUG_TABLE_REFLOW_TIMING
nsTableFrame::DebugReflow(firstKid, (nsHTMLReflowState&)kidReflowState, &kidSize, aStatus);
#endif
#ifdef NS_DEBUG
DebugCheckChildSize(firstKid, kidSize, availSize, (NS_UNCONSTRAINEDSIZE != aReflowState.availableWidth));
#endif
// 0 dimensioned cells need to be treated specially in Standard/NavQuirks mode
// see testcase "emptyCells.html"
if ((0 == kidSize.width) || (0 == kidSize.height)) { // XXX why was this &&
SetContentEmpty(PR_TRUE);
if (NS_UNCONSTRAINEDSIZE == kidReflowState.availableWidth &&
GetStyleTableBorder()->mEmptyCells != NS_STYLE_TABLE_EMPTY_CELLS_SHOW) {
// need to reduce the insets by border if the cell is empty
leftInset -= border.left;
rightInset -= border.right;
topInset -= border.top;
bottomInset -= border.bottom;
}
}
else {
SetContentEmpty(PR_FALSE);
if ((eReflowReason_Incremental == aReflowState.reason) && noBorderBeforeReflow) {
// need to consider borders, since they were factored out above
leftInset += border.left;
rightInset += border.right;
topInset += border.top;
bottomInset += border.bottom;
kidOrigin.MoveTo(leftInset, topInset);
}
}
const nsStylePosition* pos = GetStylePosition();
// calculate the min cell width
nscoord onePixel = NSIntPixelsToTwips(1, p2t);
nscoord smallestMinWidth = 0;
if (eCompatibility_NavQuirks == compatMode) {
if ((pos->mWidth.GetUnit() != eStyleUnit_Coord) &&
(pos->mWidth.GetUnit() != eStyleUnit_Percent)) {
if (PR_TRUE == GetContentEmpty()) {
if (border.left > 0)
smallestMinWidth += onePixel;
if (border.right > 0)
smallestMinWidth += onePixel;
}
}
}
PRInt32 colspan = tableFrame->GetEffectiveColSpan(*this);
if (colspan > 1) {
smallestMinWidth = PR_MAX(smallestMinWidth, colspan * onePixel);
nscoord spacingX = tableFrame->GetCellSpacingX();
nscoord spacingExtra = spacingX * (colspan - 1);
smallestMinWidth += spacingExtra;
if (aReflowState.mComputedPadding.left > 0) {
smallestMinWidth -= onePixel;
}
}
if ((0 == kidSize.width) && (NS_UNCONSTRAINEDSIZE != kidReflowState.availableWidth)) {
// empty content has to be forced to the assigned width for resize or incremental reflow
kidSize.width = kidReflowState.availableWidth;
}
if (0 == kidSize.height) {
if ((pos->mHeight.GetUnit() != eStyleUnit_Coord) &&
(pos->mHeight.GetUnit() != eStyleUnit_Percent)) {
PRInt32 pixHeight = (eCompatibility_NavQuirks == compatMode) ? 1 : 0;
kidSize.height = NSIntPixelsToTwips(pixHeight, p2t);
}
}
// end 0 dimensioned cells
kidSize.width = PR_MAX(kidSize.width, smallestMinWidth);
if (!tableFrame->IsAutoLayout()) {
// a cell in a fixed layout table is constrained to the avail width
// if we need to shorten the cell the previous non overflowing block
// will get some overflow area
if (kidSize.width > availSize.width) {
kidSize.width = availSize.width;
firstKid->FinishAndStoreOverflow(&kidSize);
}
}
//if (eReflowReason_Resize == aReflowState.reason) {
// NS_ASSERTION(kidSize.width <= availSize.width, "child needed more space during resize reflow");
//}
// Place the child
FinishReflowChild(firstKid, aPresContext, &kidReflowState, kidSize,
kidOrigin.x, kidOrigin.y, 0);
// first, compute the height which can be set w/o being restricted by aMaxSize.height
nscoord cellHeight = kidSize.height;
if (NS_UNCONSTRAINEDSIZE != cellHeight) {
cellHeight += topInset + bottomInset;
// work around block rounding errors, round down to ensure we don't exceed the avail height in
nsPixelRound roundMethod = (NS_UNCONSTRAINEDSIZE == availHeight) ? eAlwaysRoundUp : eAlwaysRoundDown;
cellHeight = nsTableFrame::RoundToPixel(cellHeight, p2t, roundMethod);
}
// next determine the cell's width
nscoord cellWidth = kidSize.width; // at this point, we've factored in the cell's style attributes
// factor in border and padding
if (NS_UNCONSTRAINEDSIZE != cellWidth) {
cellWidth += leftInset + rightInset;
}
cellWidth = nsTableFrame::RoundToPixel(cellWidth, p2t); // work around block rounding errors
// set the cell's desired size and max element size
aDesiredSize.width = cellWidth;
aDesiredSize.height = cellHeight;
aDesiredSize.ascent = topInset;
aDesiredSize.descent = bottomInset;
aDesiredSize.ascent += kidSize.ascent;
aDesiredSize.descent += kidSize.descent;
// the overflow area will be computed when the child will be vertically aligned
if (aDesiredSize.mComputeMEW) {
aDesiredSize.mMaxElementWidth =
PR_MAX(smallestMinWidth, kidSize.mMaxElementWidth);
if (NS_UNCONSTRAINEDSIZE != aDesiredSize.mMaxElementWidth) {
aDesiredSize.mMaxElementWidth = nsTableFrame::RoundToPixel(
aDesiredSize.mMaxElementWidth + leftInset + rightInset, p2t);
}
}
if (aDesiredSize.mFlags & NS_REFLOW_CALC_MAX_WIDTH) {
aDesiredSize.mMaximumWidth = kidSize.mMaximumWidth;
if (NS_UNCONSTRAINEDSIZE != aDesiredSize.mMaximumWidth) {
aDesiredSize.mMaximumWidth += leftInset + rightInset;
aDesiredSize.mMaximumWidth = nsTableFrame::RoundToPixel(aDesiredSize.mMaximumWidth, p2t);
}
// make sure the preferred width is at least as big as the max element width
if (aDesiredSize.mComputeMEW) {
aDesiredSize.mMaximumWidth = PR_MAX(aDesiredSize.mMaximumWidth, aDesiredSize.mMaxElementWidth);
}
}
if (aReflowState.mFlags.mSpecialHeightReflow) {
if (aDesiredSize.height > mRect.height) {
// set a bit indicating that the pct height contents exceeded
// the height that they could honor in the pass 2 reflow
SetHasPctOverHeight(PR_TRUE);
}
if (NS_UNCONSTRAINEDSIZE == aReflowState.availableHeight) {
aDesiredSize.height = mRect.height;
}
SetNeedSpecialReflow(PR_FALSE);
SetHadSpecialReflow(PR_TRUE);
}
else if (HadSpecialReflow()) {
if (eReflowReason_Incremental == aReflowState.reason) {
// with an unconstrained height, if the block height value hasn't changed,
// use the last height of the cell.
if ((NS_UNCONSTRAINEDSIZE == aReflowState.availableHeight) &&
(GetLastBlockHeight() == priorBlockHeight)) {
aDesiredSize.height = mRect.height;
}
}
// XXX should probably call SetHadSpecialReflow(PR_FALSE) when things change so that
// nothing inside the cell has a percent height, but it is not easy determining this
}
// remember the desired size for this reflow
SetDesiredSize(aDesiredSize);
#if defined DEBUG_TABLE_REFLOW_TIMING
nsTableFrame::DebugReflow(this, (nsHTMLReflowState&)aReflowState, &aDesiredSize, aStatus);
#endif
if (NS_UNCONSTRAINEDSIZE == aReflowState.availableWidth) {
SetNeedPass2Reflow(PR_TRUE);
}
else if ((eReflowReason_Initial == aReflowState.reason) ||
(eReflowReason_Resize == aReflowState.reason)) {
SetNeedPass2Reflow(PR_FALSE);
}
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
return NS_OK;
}
/* ----- global methods ----- */
NS_IMPL_ADDREF_INHERITED(nsTableCellFrame, nsHTMLContainerFrame)
NS_IMPL_RELEASE_INHERITED(nsTableCellFrame, nsHTMLContainerFrame)
nsresult nsTableCellFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(NS_GET_IID(nsITableCellLayout))) {
*aInstancePtr = (void*) (nsITableCellLayout *)this;
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIPercentHeightObserver))) {
*aInstancePtr = (void*) (nsIPercentHeightObserver *)this;
return NS_OK;
}
return nsHTMLContainerFrame::QueryInterface(aIID, aInstancePtr);
}
#ifdef ACCESSIBILITY
NS_IMETHODIMP nsTableCellFrame::GetAccessible(nsIAccessible** aAccessible)
{
nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
if (accService) {
return accService->CreateHTMLTableCellAccessible(NS_STATIC_CAST(nsIFrame*, this), aAccessible);
}
return NS_ERROR_FAILURE;
}
#endif
/* This is primarily for editor access via nsITableLayout */
NS_IMETHODIMP
nsTableCellFrame::GetCellIndexes(PRInt32 &aRowIndex, PRInt32 &aColIndex)
{
nsresult res = GetRowIndex(aRowIndex);
if (NS_FAILED(res))
{
aColIndex = 0;
return res;
}
aColIndex = mBits.mColIndex;
return NS_OK;
}
NS_IMETHODIMP
nsTableCellFrame::GetPreviousCellInColumn(nsITableCellLayout **aCellLayout)
{
if (!aCellLayout) return NS_ERROR_NULL_POINTER;
*aCellLayout = nsnull;
nsTableFrame* tableFrame = nsnull;
nsresult rv = nsTableFrame::GetTableFrame(this, tableFrame);
if (NS_FAILED(rv)) return rv;
if (!tableFrame) return NS_ERROR_FAILURE;
// Get current cell location
PRInt32 rowIndex, colIndex;
GetCellIndexes(rowIndex, colIndex);
if (colIndex > 0)
{
// Get the cellframe at previous colIndex
nsTableCellFrame *cellFrame = tableFrame->GetCellFrameAt(rowIndex, colIndex-1);
if (!cellFrame) return NS_ERROR_FAILURE;
return CallQueryInterface(cellFrame, aCellLayout);
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsTableCellFrame::GetNextCellInColumn(nsITableCellLayout **aCellLayout)
{
if (!aCellLayout) return NS_ERROR_NULL_POINTER;
*aCellLayout = nsnull;
nsTableFrame* tableFrame = nsnull;
nsresult rv = nsTableFrame::GetTableFrame(this, tableFrame);
if (NS_FAILED(rv)) return rv;
if (!tableFrame) return NS_ERROR_FAILURE;
// Get current cell location
PRInt32 rowIndex, colIndex;
GetCellIndexes(rowIndex, colIndex);
// Get the cellframe at next colIndex
nsTableCellFrame *cellFrame = tableFrame->GetCellFrameAt(rowIndex, colIndex+1);
if (!cellFrame) return NS_ERROR_FAILURE;
return CallQueryInterface(cellFrame, aCellLayout);
}
nsresult
NS_NewTableCellFrame(nsIPresShell* aPresShell,
PRBool aIsBorderCollapse,
nsIFrame** aNewFrame)
{
NS_PRECONDITION(aNewFrame, "null OUT ptr");
if (nsnull == aNewFrame) {
return NS_ERROR_NULL_POINTER;
}
nsTableCellFrame* it = (aIsBorderCollapse) ? new (aPresShell) nsBCTableCellFrame
: new (aPresShell) nsTableCellFrame;
if (nsnull == it) {
return NS_ERROR_OUT_OF_MEMORY;
}
*aNewFrame = it;
return NS_OK;
}
nsMargin*
nsTableCellFrame::GetBorderWidth(float aPixelsToTwips,
nsMargin& aBorder) const
{
aBorder = GetStyleBorder()->GetBorder();
return &aBorder;
}
nsIAtom*
nsTableCellFrame::GetType() const
{
return nsLayoutAtoms::tableCellFrame;
}
#ifdef DEBUG
NS_IMETHODIMP
nsTableCellFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("TableCell"), aResult);
}
#endif
void nsTableCellFrame::SetCollapseOffsetX(nscoord aXOffset)
{
// Get the frame property (creating a point struct if necessary)
nsPoint* offset = (nsPoint*)nsTableFrame::GetProperty(this, nsLayoutAtoms::collapseOffsetProperty, aXOffset != 0);
if (offset) {
offset->x = aXOffset;
}
}
void nsTableCellFrame::SetCollapseOffsetY(nscoord aYOffset)
{
// Get the property (creating a point struct if necessary)
nsPoint* offset = (nsPoint*)nsTableFrame::GetProperty(this, nsLayoutAtoms::collapseOffsetProperty, aYOffset != 0);
if (offset) {
offset->y = aYOffset;
}
}
void nsTableCellFrame::GetCollapseOffset(nsPoint& aOffset)
{
// See if the property is set
nsPoint* offset = (nsPoint*)nsTableFrame::GetProperty(this, nsLayoutAtoms::collapseOffsetProperty);
if (offset) {
aOffset = *offset;
} else {
aOffset.MoveTo(0, 0);
}
}
// nsBCTableCellFrame
nsBCTableCellFrame::nsBCTableCellFrame()
:nsTableCellFrame()
{
mTopBorder = mRightBorder = mBottomBorder = mLeftBorder = 0;
}
nsBCTableCellFrame::~nsBCTableCellFrame()
{
}
nsIAtom*
nsBCTableCellFrame::GetType() const
{
return nsLayoutAtoms::bcTableCellFrame;
}
#ifdef DEBUG
NS_IMETHODIMP
nsBCTableCellFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("BCTableCell"), aResult);
}
#endif
nsMargin*
nsBCTableCellFrame::GetBorderWidth(float aPixelsToTwips,
nsMargin& aBorder) const
{
aBorder.top = BC_BORDER_BOTTOM_HALF_COORD(aPixelsToTwips, mTopBorder);
aBorder.right = BC_BORDER_LEFT_HALF_COORD(aPixelsToTwips, mRightBorder);
aBorder.bottom = BC_BORDER_TOP_HALF_COORD(aPixelsToTwips, mBottomBorder);
aBorder.left = BC_BORDER_RIGHT_HALF_COORD(aPixelsToTwips, mLeftBorder);
return &aBorder;
}
BCPixelSize
nsBCTableCellFrame::GetBorderWidth(PRUint8 aSide) const
{
switch(aSide) {
case NS_SIDE_TOP:
return BC_BORDER_BOTTOM_HALF(mTopBorder);
case NS_SIDE_RIGHT:
return BC_BORDER_LEFT_HALF(mRightBorder);
case NS_SIDE_BOTTOM:
return BC_BORDER_TOP_HALF(mBottomBorder);
default:
return BC_BORDER_RIGHT_HALF(mLeftBorder);
}
}
void
nsBCTableCellFrame::SetBorderWidth(PRUint8 aSide,
BCPixelSize aValue)
{
switch(aSide) {
case NS_SIDE_TOP:
mTopBorder = aValue;
break;
case NS_SIDE_RIGHT:
mRightBorder = aValue;
break;
case NS_SIDE_BOTTOM:
mBottomBorder = aValue;
break;
default:
mLeftBorder = aValue;
}
}
/* virtual */ void
nsBCTableCellFrame::GetSelfOverflow(nsRect& aOverflowArea)
{
nsMargin halfBorder;
float p2t = GetPresContext()->PixelsToTwips();
halfBorder.top = BC_BORDER_TOP_HALF_COORD(p2t, mTopBorder);
halfBorder.right = BC_BORDER_RIGHT_HALF_COORD(p2t, mRightBorder);
halfBorder.bottom = BC_BORDER_BOTTOM_HALF_COORD(p2t, mBottomBorder);
halfBorder.left = BC_BORDER_LEFT_HALF_COORD(p2t, mLeftBorder);
nsRect overflow(nsPoint(0,0), GetSize());
overflow.Inflate(halfBorder);
aOverflowArea = overflow;
}
void
nsBCTableCellFrame::PaintUnderlay(nsPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
PRUint32& aFlags,
const nsStyleBorder& aStyleBorder,
const nsStylePadding& aStylePadding,
const nsStyleTableBorder& aCellTableStyle)
{
if (!(aFlags & NS_PAINT_FLAG_TABLE_BG_PAINT)
/*direct call; not table-based paint*/ ||
(aFlags & NS_PAINT_FLAG_TABLE_CELL_BG_PASS)
/*table cell background only pass*/) {
// make border-width reflect the half of the border-collapse
// assigned border that's inside the cell
GET_PIXELS_TO_TWIPS(&aPresContext, p2t);
nsMargin borderWidth;
GetBorderWidth(p2t, borderWidth);
nsStyleBorder myBorder(aStyleBorder);
NS_FOR_CSS_SIDES(side) {
myBorder.SetBorderWidth(side, borderWidth.side(side));
}
nsRect rect(0, 0, mRect.width, mRect.height);
nsCSSRendering::PaintBackground(&aPresContext, aRenderingContext, this,
aDirtyRect, rect, myBorder, aStylePadding,
PR_TRUE);
// borders are painted by nsTableFrame
}
}
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