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gecko-dev/layout/tables/nsTableCellFrame.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsTableCellFrame.h"
#include "nsTableColFrame.h"
#include "nsTableFrame.h"
#include "nsIReflowCommand.h"
#include "nsIStyleContext.h"
#include "nsStyleConsts.h"
#include "nsIPresContext.h"
#include "nsIRenderingContext.h"
#include "nsCSSRendering.h"
#include "nsIContent.h"
#include "nsIHTMLContent.h"
#include "nsHTMLIIDs.h"
#include "nsHTMLParts.h"
#include "nsHTMLValue.h"
#include "nsHTMLAtoms.h"
#include "nsHTMLIIDs.h"
#include "nsVoidArray.h"
#include "nsIPtr.h"
#include "nsIView.h"
#include "nsStyleUtil.h"
#include "nsLayoutAtoms.h"
NS_DEF_PTR(nsIStyleContext);
#ifdef NS_DEBUG
static PRBool gsDebug = PR_FALSE;
static PRBool gsDebugNT = PR_FALSE;
//#define NOISY_STYLE
//#define NOISY_FLOW
#else
static const PRBool gsDebug = PR_FALSE;
static const PRBool gsDebugNT = PR_FALSE;
#endif
NS_IMETHODIMP
nsTableCellFrame::Init(nsIPresContext& aPresContext,
nsIContent* aContent,
nsIFrame* aParent,
nsIStyleContext* 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 baseColIndex;
cellFrame->GetColIndex(baseColIndex);
InitCellFrame(baseColIndex);
}
return rv;
}
void nsTableCellFrame::InitCellFrame(PRInt32 aColIndex)
{
NS_PRECONDITION(0<=aColIndex, "bad col index arg");
mColIndex = aColIndex;
mBorderEdges.mOutsideEdge=PR_FALSE;
nsTableFrame* tableFrame=nsnull; // I should be checking my own style context, but border-collapse isn't inheriting correctly
nsresult rv = nsTableFrame::GetTableFrame(this, tableFrame);
if ((NS_SUCCEEDED(rv)) && (nsnull!=tableFrame))
{
const nsStyleTable* tableStyle;
tableFrame->GetStyleData(eStyleStruct_Table, ((const nsStyleStruct *&)tableStyle));
if (NS_STYLE_BORDER_COLLAPSE==tableStyle->mBorderCollapse)
{
PRInt32 rowspan = GetRowSpan();
PRInt32 i;
for (i=0; i<rowspan; i++)
{
nsBorderEdge *borderToAdd = new nsBorderEdge();
mBorderEdges.mEdges[NS_SIDE_LEFT].AppendElement(borderToAdd);
borderToAdd = new nsBorderEdge();
mBorderEdges.mEdges[NS_SIDE_RIGHT].AppendElement(borderToAdd);
}
PRInt32 colspan = GetColSpan();
for (i=0; i<colspan; i++)
{
nsBorderEdge *borderToAdd = new nsBorderEdge();
mBorderEdges.mEdges[NS_SIDE_TOP].AppendElement(borderToAdd);
borderToAdd = new nsBorderEdge();
mBorderEdges.mEdges[NS_SIDE_BOTTOM].AppendElement(borderToAdd);
}
}
mCollapseOffset = nsPoint(0,0);
}
}
void nsTableCellFrame::SetBorderEdgeLength(PRUint8 aSide,
PRInt32 aIndex,
nscoord aLength)
{
if ((NS_SIDE_LEFT==aSide) || (NS_SIDE_RIGHT==aSide))
{
PRInt32 baseRowIndex;
GetRowIndex(baseRowIndex);
PRInt32 rowIndex = aIndex-baseRowIndex;
nsBorderEdge *border = (nsBorderEdge *)(mBorderEdges.mEdges[aSide].ElementAt(rowIndex));
border->mLength = aLength;
}
else {
NS_ASSERTION(PR_FALSE, "bad arg aSide passed to SetBorderEdgeLength");
}
}
NS_METHOD nsTableCellFrame::Paint(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer)
{
if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) {
const nsStyleDisplay* disp =
(const nsStyleDisplay*)mStyleContext->GetStyleData(eStyleStruct_Display);
if (disp->mVisible) {
const nsStyleColor* myColor =
(const nsStyleColor*)mStyleContext->GetStyleData(eStyleStruct_Color);
const nsStyleSpacing* mySpacing =
(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
NS_ASSERTION(nsnull!=myColor, "bad style color");
NS_ASSERTION(nsnull!=mySpacing, "bad style spacing");
const nsStyleTable* cellTableStyle;
GetStyleData(eStyleStruct_Table, ((const nsStyleStruct *&)cellTableStyle));
nsRect rect(0, 0, mRect.width, mRect.height);
// only non empty cells render their background
if (PR_FALSE == GetContentEmpty()) {
nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *myColor, *mySpacing, 0, 0);
}
// empty cells do not render their border
PRBool renderBorder = PR_TRUE;
if (PR_TRUE==GetContentEmpty())
{
if (NS_STYLE_TABLE_EMPTY_CELLS_HIDE==cellTableStyle->mEmptyCells)
renderBorder=PR_FALSE;
}
if (PR_TRUE==renderBorder)
{
PRIntn skipSides = GetSkipSides();
nsTableFrame* tableFrame=nsnull; // I should be checking my own style context, but border-collapse isn't inheriting correctly
nsresult rv = nsTableFrame::GetTableFrame(this, tableFrame);
if ((NS_SUCCEEDED(rv)) && (nsnull!=tableFrame))
{
const nsStyleTable* tableStyle;
tableFrame->GetStyleData(eStyleStruct_Table, ((const nsStyleStruct *&)tableStyle));
if (NS_STYLE_BORDER_SEPARATE==tableStyle->mBorderCollapse)
{
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *mySpacing, mStyleContext, skipSides);
}
else
{
nsCSSRendering::PaintBorderEdges(aPresContext, aRenderingContext, this,
aDirtyRect, rect, &mBorderEdges, mStyleContext, skipSides);
}
}
}
}
}
// 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);
}
// 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.
// XXX What about content that can leak outside the cell?
PRBool clipState;
aRenderingContext.PushState();
nsPoint offset = mCollapseOffset;
if ((0 != offset.x) || (0 != offset.y)) {
aRenderingContext.Translate(offset.x, offset.y);
}
aRenderingContext.SetClipRect(nsRect(-offset.x, -offset.y, mRect.width, mRect.height),
nsClipCombine_kIntersect, clipState);
PaintChildren(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
aRenderingContext.PopState(clipState);
return nsFrame::Paint(aPresContext,
aRenderingContext,
aDirtyRect,
aWhichLayer);
}
//null range means the whole thing
NS_IMETHODIMP
nsTableCellFrame::SetSelected(nsIDOMRange *aRange,PRBool aSelected, nsSpread aSpread)
{
//traverse through children unselect tables
if ((aSpread == eSpreadDown) && aSelected){
nsIFrame* kid;
nsresult rv = FirstChild(nsnull, &kid);
while (nsnull != kid) {
kid->SetSelected(nsnull,PR_FALSE,eSpreadDown);
kid->GetNextSibling(&kid);
}
}
return nsFrame::SetSelected(aRange,aSelected,eSpreadNone);
}
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();
}
void nsTableCellFrame::SetBorderEdge(PRUint8 aSide,
PRInt32 aRowIndex,
PRInt32 aColIndex,
nsBorderEdge *aBorder,
nscoord aOddAmountToAdd)
{
nsBorderEdge *border = nsnull;
switch (aSide)
{
case NS_SIDE_TOP:
{
PRInt32 baseColIndex;
GetColIndex(baseColIndex);
PRInt32 colIndex = aColIndex-baseColIndex;
border = (nsBorderEdge *)(mBorderEdges.mEdges[aSide].ElementAt(colIndex));
mBorderEdges.mMaxBorderWidth.top = PR_MAX(aBorder->mWidth+aOddAmountToAdd, mBorderEdges.mMaxBorderWidth.top);
break;
}
case NS_SIDE_BOTTOM:
{
PRInt32 baseColIndex;
GetColIndex(baseColIndex);
PRInt32 colIndex = aColIndex-baseColIndex;
border = (nsBorderEdge *)(mBorderEdges.mEdges[aSide].ElementAt(colIndex));
mBorderEdges.mMaxBorderWidth.bottom = PR_MAX(aBorder->mWidth+aOddAmountToAdd, mBorderEdges.mMaxBorderWidth.bottom);
break;
}
case NS_SIDE_LEFT:
{
PRInt32 baseRowIndex;
GetRowIndex(baseRowIndex);
PRInt32 rowIndex = aRowIndex-baseRowIndex;
border = (nsBorderEdge *)(mBorderEdges.mEdges[aSide].ElementAt(rowIndex));
mBorderEdges.mMaxBorderWidth.left = PR_MAX(aBorder->mWidth+aOddAmountToAdd, mBorderEdges.mMaxBorderWidth.left);
break;
}
case NS_SIDE_RIGHT:
{
PRInt32 baseRowIndex;
GetRowIndex(baseRowIndex);
PRInt32 rowIndex = aRowIndex-baseRowIndex;
border = (nsBorderEdge *)(mBorderEdges.mEdges[aSide].ElementAt(rowIndex));
mBorderEdges.mMaxBorderWidth.right = PR_MAX(aBorder->mWidth+aOddAmountToAdd, mBorderEdges.mMaxBorderWidth.right);
break;
}
}
if (nsnull!=border) {
*border=*aBorder;
border->mWidth += aOddAmountToAdd;
}
else {
NS_ASSERTION(PR_FALSE, "bad border edge state");
}
}
/**
*
* Align the cell's child frame within the cell
*
*/
void nsTableCellFrame::VerticallyAlignChild()
{
const nsStyleSpacing* spacing =
(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
const nsStyleText* textStyle =
(const nsStyleText*)mStyleContext->GetStyleData(eStyleStruct_Text);
/* XXX: remove tableFrame when border-collapse inherits */
nsTableFrame* tableFrame=nsnull;
nsresult rv = nsTableFrame::GetTableFrame(this, tableFrame);
nsMargin borderPadding;
GetCellBorder (borderPadding, tableFrame);
nsMargin padding;
spacing->GetPadding(padding);
borderPadding += padding;
nscoord topInset = borderPadding.top;
nscoord bottomInset = borderPadding.bottom;
PRUint8 verticalAlignFlags = NS_STYLE_VERTICAL_ALIGN_MIDDLE;
if (textStyle->mVerticalAlign.GetUnit() == eStyleUnit_Enumerated) {
verticalAlignFlags = textStyle->mVerticalAlign.GetIntValue();
}
nscoord height = mRect.height;
nsRect kidRect;
nsIFrame* firstKid = mFrames.FirstChild();
firstKid->GetRect(kidRect);
nscoord childHeight = kidRect.height;
// Vertically align the child
nscoord kidYTop = 0;
switch (verticalAlignFlags)
{
case NS_STYLE_VERTICAL_ALIGN_BASELINE:
// Align the child's baseline at the max baseline
//kidYTop = aMaxAscent - kidAscent;
break;
case NS_STYLE_VERTICAL_ALIGN_TOP:
// Align the top of the child frame with the top of the box,
// minus the top padding
kidYTop = topInset;
break;
case NS_STYLE_VERTICAL_ALIGN_BOTTOM:
kidYTop = height - childHeight - bottomInset;
break;
default:
case NS_STYLE_VERTICAL_ALIGN_MIDDLE:
kidYTop = height/2 - childHeight/2;
}
firstKid->MoveTo(kidRect.x, kidYTop);
}
PRInt32 nsTableCellFrame::GetRowSpan()
{
PRInt32 rowSpan=1;
nsIHTMLContent *hc=nsnull;
nsresult rv = mContent->QueryInterface(kIHTMLContentIID, (void**) &hc);
if (NS_OK==rv)
{
nsHTMLValue val;
hc->GetHTMLAttribute(nsHTMLAtoms::rowspan, val);
if (eHTMLUnit_Integer == val.GetUnit()) {
rowSpan=val.GetIntValue();
}
NS_RELEASE(hc);
}
return rowSpan;
}
PRInt32 nsTableCellFrame::GetColSpan()
{
PRInt32 colSpan=1;
nsIHTMLContent *hc=nsnull;
nsresult rv = mContent->QueryInterface(kIHTMLContentIID, (void**) &hc);
if (NS_OK==rv)
{
nsHTMLValue val;
hc->GetHTMLAttribute(nsHTMLAtoms::colspan, val);
if (eHTMLUnit_Integer == val.GetUnit()) {
colSpan=val.GetIntValue();
}
NS_RELEASE(hc);
}
return colSpan;
}
void DebugCheckChildSize(nsIFrame* aChild,
nsHTMLReflowMetrics& aMet,
nsSize& aAvailSize,
PRBool aIsPass2Reflow)
{
if (aMet.width > aAvailSize.width) {
nsAutoString tmp;
aChild->GetFrameName(tmp);
printf("WARNING: cell ");
fputs(tmp, stdout);
printf(" content has desired width %d given avail width %d\n",
aMet.width, aAvailSize.width);
}
if (aIsPass2Reflow) {
if ((aMet.width < 0) || (aMet.width > 60000)) {
printf("WARNING: cell content %p has large width %d \n", aChild, aMet.width);
}
if ((aMet.height < 0) || (aMet.height > 60000)) {
printf("WARNING: cell content %p has large height %d \n", aChild, aMet.height);
}
}
if (aMet.maxElementSize) {
nscoord tmp = aMet.maxElementSize->width;
if ((tmp < 0) || (tmp > 60000)) {
printf("WARNING: cell content %p has large max element width %d \n", aChild, tmp);
}
tmp = aMet.maxElementSize->height;
if ((tmp < 0) || (tmp > 60000)) {
printf("WARNING: cell content %p has large max element height %d \n", aChild, tmp);
}
}
}
/**
*/
NS_METHOD nsTableCellFrame::Reflow(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
#ifdef NS_DEBUG
//PreReflowCheck();
#endif
nsresult rv = NS_OK;
// this should probably be cached somewhere
nsCompatibility compatMode;
aPresContext.GetCompatibilityMode(&compatMode);
// Initialize out parameter
if (nsnull != aDesiredSize.maxElementSize) {
aDesiredSize.maxElementSize->width = 0;
aDesiredSize.maxElementSize->height = 0;
}
aStatus = NS_FRAME_COMPLETE;
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugNT)
printf("%p nsTableCellFrame::Reflow: maxSize=%d,%d\n",
this, aReflowState.availableWidth, aReflowState.availableHeight);
nsSize availSize(aReflowState.availableWidth, aReflowState.availableHeight);
nsSize maxElementSize;
nsSize *pMaxElementSize = aDesiredSize.maxElementSize;
if (NS_UNCONSTRAINEDSIZE==aReflowState.availableWidth)
pMaxElementSize = &maxElementSize;
// SEC: what about ascent and decent???
// Compute the insets (sum of border and padding)
const nsStyleSpacing* spacing =
(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
/* XXX: remove tableFrame when border-collapse inherits */
nsTableFrame* tableFrame=nsnull;
rv = nsTableFrame::GetTableFrame(this, tableFrame);
nsMargin borderPadding;
spacing->GetPadding(borderPadding);
nsMargin border;
GetCellBorder(border, tableFrame);
if ((NS_UNCONSTRAINEDSIZE == availSize.width) || !GetContentEmpty()) {
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;
if (eReflowReason_Incremental == aReflowState.reason)
{
// We *must* do this otherwise incremental reflow that's
// passing through will not work right.
nsIFrame* next;
aReflowState.reflowCommand->GetNext(next);
// if it is a StyleChanged reflow targeted at this cell frame,
// handle that here
// first determine if this frame is the target or not
nsIFrame *target=nsnull;
rv = aReflowState.reflowCommand->GetTarget(target);
if ((PR_TRUE==NS_SUCCEEDED(rv)) && (nsnull!=target))
{
if (this==target)
{
if (gsDebug) { printf("IR target is cell\n"); }
nsIReflowCommand::ReflowType type;
aReflowState.reflowCommand->GetType(type);
if (nsIReflowCommand::StyleChanged==type)
{
nsresult rv = IR_StyleChanged(aPresContext, aDesiredSize, aReflowState, aStatus);
aStatus = NS_FRAME_COMPLETE;
return rv;
}
else {
NS_ASSERTION(PR_FALSE, "table cell target of illegal incremental reflow type");
}
}
else if (gsDebug) { printf("IR target is cell content\n"); }
}
// if any of these conditions are not true, we just pass the reflow command down
}
// Try to reflow the child into the available space. It might not
// fit or might need continuing.
if (availSize.height < 0)
availSize.height = 1;
if (gsDebug==PR_TRUE)
printf(" nsTableCellFrame::Reflow calling ReflowChild with availSize=%d,%d\n",
availSize.width, availSize.height);
nsHTMLReflowMetrics kidSize(pMaxElementSize);
kidSize.width=kidSize.height=kidSize.ascent=kidSize.descent=0;
SetPriorAvailWidth(aReflowState.availableWidth);
nsIFrame* firstKid = mFrames.FirstChild();
nsHTMLReflowState kidReflowState(aPresContext, aReflowState, firstKid,
availSize);
ReflowChild(firstKid, aPresContext, kidSize, kidReflowState, aStatus);
#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 "cellHeight.html"
if (NS_UNCONSTRAINEDSIZE == kidReflowState.availableWidth) {
if ((0 == kidSize.width) || (0 == kidSize.height)) {
//if ((0 == kidSize.width) && (0 == kidSize.height)) { // XXX why was this &&
SetContentEmpty(PR_TRUE);
// 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 (0 == kidSize.width) {
if (NS_UNCONSTRAINEDSIZE == kidReflowState.availableWidth) {
const nsStylePosition* pos;
GetStyleData(eStyleStruct_Position, ((const nsStyleStruct *&)pos));
if ((pos->mWidth.GetUnit() != eStyleUnit_Coord) &&
(pos->mWidth.GetUnit() != eStyleUnit_Percent)) {
float p2t;
aPresContext.GetScaledPixelsToTwips(&p2t);
PRInt32 pixWidth = (eCompatibility_Standard == compatMode) ? 1 : 3;
kidSize.width = NSIntPixelsToTwips(pixWidth, p2t);
if ((nsnull != aDesiredSize.maxElementSize) && (0 == pMaxElementSize->width))
pMaxElementSize->width = kidSize.width;
if (eCompatibility_NavQuirks == compatMode) {
if (gsDebug) printf ("setting initial child width from 0 to %d for nav4 compatibility\n", kidSize.width);
}
}
}
else // empty content has to be forced to the assigned width for resize or incremental reflow
kidSize.width = kidReflowState.availableWidth;
}
if (0 == kidSize.height) {
const nsStylePosition* pos;
GetStyleData(eStyleStruct_Position, ((const nsStyleStruct *&)pos));
if ((pos->mHeight.GetUnit() != eStyleUnit_Coord) &&
(pos->mHeight.GetUnit() != eStyleUnit_Percent)) {
float p2t;
aPresContext.GetScaledPixelsToTwips(&p2t);
// Standard mode should probably be 0 pixels high instead of 1
PRInt32 pixHeight = (eCompatibility_Standard == compatMode) ? 1 : 2;
kidSize.height = NSIntPixelsToTwips(pixHeight, p2t);
if ((nsnull != aDesiredSize.maxElementSize) && (0 == pMaxElementSize->height))
pMaxElementSize->height = kidSize.height;
if (eCompatibility_NavQuirks == compatMode) {
if (gsDebug) printf ("setting child height from 0 to %d for nav4 compatibility\n", kidSize.height);
}
}
}
// end 0 dimensioned cells
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugNT)
{
if (nsnull!=pMaxElementSize)
printf(" %p cellFrame child returned desiredSize=%d,%d, and maxElementSize=%d,%d\n",
this, kidSize.width, kidSize.height,
pMaxElementSize->width, pMaxElementSize->height);
else
printf(" %p cellFrame child returned desiredSize=%d,%d, and maxElementSize=nsnull\n",
this, kidSize.width, kidSize.height);
}
// Place the child
//////////////////////////////// HACK //////////////////////////////
kidSize.width = PR_MIN(kidSize.width, availSize.width);
///////////////////////////// END HACK /////////////////////////////
firstKid->SetRect(nsRect(leftInset, topInset,
kidSize.width, kidSize.height));
// Return our size and our result
// first, compute the height which can be set w/o being restricted by aMaxSize.height
nscoord cellHeight = kidSize.height + topInset + bottomInset;
if (PR_TRUE==gsDebugNT)
printf(" %p cellFrame height set to %d from kidSize=%d and insets %d,%d\n",
this, cellHeight, kidSize.height, topInset, bottomInset);
// next determine the cell's width
nscoord cellWidth = kidSize.width; // at this point, we've factored in the cell's style attributes
// add the insets into the cell width (in both the constrained-width and unconstrained-width cases
cellWidth += leftInset + rightInset; // factor in border and padding
// set the cell's desired size and max element size
aDesiredSize.width = cellWidth;
aDesiredSize.height = cellHeight;
aDesiredSize.ascent = topInset;
aDesiredSize.descent = bottomInset;
if (nsnull!=aDesiredSize.maxElementSize)
{
*aDesiredSize.maxElementSize = *pMaxElementSize;
if (0!=pMaxElementSize->height)
aDesiredSize.maxElementSize->height += topInset + bottomInset;
if (0!=pMaxElementSize->width)
aDesiredSize.maxElementSize->width += leftInset + rightInset;
}
// remember my desired size for this reflow
SetDesiredSize(aDesiredSize);
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugNT)
printf(" %p cellFrame returning aDesiredSize=%d,%d\n",
this, aDesiredSize.width, aDesiredSize.height);
aDesiredSize.ascent=aDesiredSize.height;
aDesiredSize.descent=0;
// if we got this far with an incremental reflow, the reflow was targeted
// at the cell's content. We should only have to redo pass1 for this cell
// then rebalance columns. The pass1 is handled by the cell's parent row.
// So here all we have to do is tell the table to rebalance.
if (eReflowReason_Incremental == aReflowState.reason)
{
nsTableFrame* tableFrame=nsnull;
rv = nsTableFrame::GetTableFrame(this, tableFrame);
if ((NS_SUCCEEDED(rv)) && (nsnull!=tableFrame))
{
tableFrame->InvalidateColumnWidths();
}
}
#ifdef NS_DEBUG
//PostReflowCheck(result);
#endif
return NS_OK;
}
NS_METHOD nsTableCellFrame::IR_StyleChanged(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
if (PR_TRUE==gsDebug) printf("Cell IR: IR_StyleChanged for frame %p\n", this);
nsresult rv = NS_OK;
// we presume that all the easy optimizations were done in the nsHTMLStyleSheet before we were called here
// XXX: we can optimize this when we know which style attribute changed
nsTableFrame* tableFrame=nsnull;
rv = nsTableFrame::GetTableFrame(this, tableFrame);
if ((NS_SUCCEEDED(rv)) && (nsnull!=tableFrame))
{
tableFrame->InvalidateCellMap();
tableFrame->InvalidateFirstPassCache();
}
return rv;
}
/**
*
* Update the border style to map to the HTML border style
*
*/
void nsTableCellFrame::MapHTMLBorderStyle(nsIPresContext* aPresContext,
nsStyleSpacing& aSpacingStyle,
nscoord aBorderWidth,
nsTableFrame* aTableFrame)
{
nsStyleCoord width;
width.SetCoordValue(aBorderWidth);
aSpacingStyle.mBorder.SetTop(width);
aSpacingStyle.mBorder.SetLeft(width);
aSpacingStyle.mBorder.SetBottom(width);
aSpacingStyle.mBorder.SetRight(width);
// XXX This should come from the default style sheet (ua.css), and
// not be hardcoded. Using solid causes the borders not to show up...
#if 1
aSpacingStyle.SetBorderStyle(NS_SIDE_TOP, NS_STYLE_BORDER_STYLE_BG_INSET);
aSpacingStyle.SetBorderStyle(NS_SIDE_LEFT, NS_STYLE_BORDER_STYLE_BG_INSET);
aSpacingStyle.SetBorderStyle(NS_SIDE_BOTTOM, NS_STYLE_BORDER_STYLE_BG_INSET);
aSpacingStyle.SetBorderStyle(NS_SIDE_RIGHT, NS_STYLE_BORDER_STYLE_BG_INSET);
#endif
nsTableFrame* tableFrame;
nsTableFrame::GetTableFrame(this, tableFrame);
nsIStyleContext* styleContext = nsnull;
tableFrame->GetStyleContext(&styleContext);
const nsStyleColor* colorData =
nsStyleUtil::FindNonTransparentBackground(styleContext);
NS_IF_RELEASE(styleContext);
// Yaahoo, we found a style context which has a background color
nscolor borderColor = 0xFFC0C0C0;
if (colorData != nsnull)
borderColor = colorData->mBackgroundColor;
// if the border color is white, then shift to grey
if (borderColor == 0xFFFFFFFF)
borderColor = 0xFFC0C0C0;
aSpacingStyle.SetBorderColor(NS_SIDE_TOP, borderColor);
aSpacingStyle.SetBorderColor(NS_SIDE_LEFT, borderColor);
aSpacingStyle.SetBorderColor(NS_SIDE_BOTTOM, borderColor);
aSpacingStyle.SetBorderColor(NS_SIDE_RIGHT, borderColor);
//adjust the border style based on the table rules attribute
const nsStyleTable* tableStyle;
tableFrame->GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
switch (tableStyle->mRules)
{
case NS_STYLE_TABLE_RULES_NONE:
aSpacingStyle.SetBorderStyle(NS_SIDE_TOP, NS_STYLE_BORDER_STYLE_NONE);
aSpacingStyle.SetBorderStyle(NS_SIDE_LEFT, NS_STYLE_BORDER_STYLE_NONE);
aSpacingStyle.SetBorderStyle(NS_SIDE_BOTTOM, NS_STYLE_BORDER_STYLE_NONE);
aSpacingStyle.SetBorderStyle(NS_SIDE_RIGHT, NS_STYLE_BORDER_STYLE_NONE);
break;
case NS_STYLE_TABLE_RULES_GROUPS:
#ifdef NS_DEBUG
printf("warning: NS_STYLE_TABLE_RULES_GROUPS used but not yet implemented.\n");
#endif
// XXX: it depends on which cell this is!
/*
for h-sides, walk up content parent list to row and see what "index in parent" row is.
if it is 0 or last, then draw the rule. otherwise, don't. Probably just compare
against FirstChild and LastChild.
for v-sides, do the same thing only for col and colgroup.
*/
/*
aSpacingStyle.mBorderStyle[NS_SIDE_TOP] = NS_STYLE_BORDER_STYLE_NONE;
aSpacingStyle.mBorderStyle[NS_SIDE_RIGHT] = NS_STYLE_BORDER_STYLE_NONE;
aSpacingStyle.mBorderStyle[NS_SIDE_BOTTOM] = NS_STYLE_BORDER_STYLE_NONE;
aSpacingStyle.mBorderStyle[NS_SIDE_LEFT] = NS_STYLE_BORDER_STYLE_NONE;
*/
break;
case NS_STYLE_TABLE_RULES_COLS:
aSpacingStyle.SetBorderStyle(NS_SIDE_TOP, NS_STYLE_BORDER_STYLE_NONE);
aSpacingStyle.SetBorderStyle(NS_SIDE_BOTTOM, NS_STYLE_BORDER_STYLE_NONE);
break;
case NS_STYLE_TABLE_RULES_ROWS:
aSpacingStyle.SetBorderStyle(NS_SIDE_LEFT, NS_STYLE_BORDER_STYLE_NONE);
aSpacingStyle.SetBorderStyle(NS_SIDE_RIGHT, NS_STYLE_BORDER_STYLE_NONE);
break;
// do nothing for "ALL" or for any illegal value
}
}
PRBool nsTableCellFrame::ConvertToPixelValue(nsHTMLValue& aValue, PRInt32 aDefault, PRInt32& aResult)
{
if (aValue.GetUnit() == eHTMLUnit_Pixel)
aResult = aValue.GetPixelValue();
else if (aValue.GetUnit() == eHTMLUnit_Empty)
aResult = aDefault;
else
{
NS_ERROR("Unit must be pixel or empty");
return PR_FALSE;
}
return PR_TRUE;
}
void nsTableCellFrame::MapBorderMarginPadding(nsIPresContext* aPresContext)
{
// Check to see if the table has either cell padding or
// Cell spacing defined for the table. If true, then
// this setting overrides any specific border, margin or
// padding information in the cell. If these attributes
// are not defined, the the cells attributes are used
nsTableFrame* tableFrame;
nsTableFrame::GetTableFrame(this, tableFrame);
NS_ASSERTION(tableFrame,"Table must not be null");
if (!tableFrame)
return;
nscoord spacingX = tableFrame->GetCellSpacingX();
nscoord spacingY = tableFrame->GetCellSpacingY();
// get the table frame style context, and from it get cellpadding, cellspacing, and border info
const nsStyleTable* tableStyle;
tableFrame->GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
const nsStyleSpacing* tableSpacingStyle;
tableFrame->GetStyleData(eStyleStruct_Spacing,(const nsStyleStruct *&)tableSpacingStyle);
nsStyleSpacing* spacingData = (nsStyleSpacing*)mStyleContext->GetMutableStyleData(eStyleStruct_Spacing);
// Cache the border-spacing into margin and wipe out any previous
// margins, since CSS doesn't allow margins to be set on cells
spacingData->mMargin.SetTop(spacingY);
spacingData->mMargin.SetRight(spacingX);
spacingData->mMargin.SetBottom(spacingY);
spacingData->mMargin.SetLeft(spacingX);
float p2t;
aPresContext->GetPixelsToTwips(&p2t);
// Get the table's cellpadding or use 2 pixels as the default if it is not set.
// This assumes that ua.css does not set padding for the cell.
nscoord defaultPadding = tableFrame->GetCellPadding();
if (-1 == defaultPadding) { // not set in table
defaultPadding = NSIntPixelsToTwips(1, p2t);
}
// if the padding is not already set, set it to the table's cellpadding
if (eHTMLUnit_Null == spacingData->mPadding.GetTopUnit())
spacingData->mPadding.SetTop(defaultPadding);
if (eHTMLUnit_Null == spacingData->mPadding.GetRightUnit())
spacingData->mPadding.SetRight(defaultPadding);
if (eHTMLUnit_Null == spacingData->mPadding.GetBottomUnit())
spacingData->mPadding.SetBottom(defaultPadding);
if (eHTMLUnit_Null == spacingData->mPadding.GetLeftUnit())
spacingData->mPadding.SetLeft(defaultPadding);
// get border information from the table
if (tableStyle->mRules!= NS_STYLE_TABLE_RULES_NONE) {
// XXX: need to get border width here
// in HTML, cell borders are always 1 pixel by default
nscoord border = NSIntPixelsToTwips(1, p2t);
MapHTMLBorderStyle(aPresContext, *spacingData, border, tableFrame);
}
MapVAlignAttribute(aPresContext, tableFrame);
MapHAlignAttribute(aPresContext, tableFrame);
}
/* XXX: this code will not work properly until the style and layout code has been updated
* as outlined in Bugzilla bug report 1802 and 915 */
void nsTableCellFrame::MapVAlignAttribute(nsIPresContext* aPresContext, nsTableFrame *aTableFrame)
{
const nsStyleText* textStyle;
GetStyleData(eStyleStruct_Text,(const nsStyleStruct *&)textStyle);
// check if valign is set on the cell
// this condition will also be true if we inherited valign from the row or rowgroup
if (textStyle->mVerticalAlign.GetUnit() == eStyleUnit_Enumerated)
{
return; // valign is already set on this cell
}
// check if valign is set on the cell's COL (or COLGROUP by inheritance)
nsTableColFrame *colFrame;
PRInt32 colIndex;
GetColIndex(colIndex);
aTableFrame->GetColumnFrame(colIndex, colFrame);
const nsStyleText* colTextStyle;
colFrame->GetStyleData(eStyleStruct_Text,(const nsStyleStruct *&)colTextStyle);
if (colTextStyle->mVerticalAlign.GetUnit() == eStyleUnit_Enumerated)
{
nsStyleText* mutableTextStyle = (nsStyleText*)mStyleContext->GetMutableStyleData(eStyleStruct_Text);
mutableTextStyle->mVerticalAlign.SetIntValue(colTextStyle->mVerticalAlign.GetIntValue(), eStyleUnit_Enumerated);
return; // valign set from COL info
}
// otherwise, set the vertical align attribute to the HTML default
nsStyleText* mutableTextStyle = (nsStyleText*)mStyleContext->GetMutableStyleData(eStyleStruct_Text);
mutableTextStyle->mVerticalAlign.SetIntValue(NS_STYLE_VERTICAL_ALIGN_MIDDLE, eStyleUnit_Enumerated);
}
/* XXX: this code will not work properly until the style and layout code has been updated
* as outlined in Bugzilla bug report 1802 and 915.
* In particular, mTextAlign has to be an nsStyleCoord, not just an int */
void nsTableCellFrame::MapHAlignAttribute(nsIPresContext* aPresContext, nsTableFrame *aTableFrame)
{
#if 0
const nsStyleText* textStyle;
GetStyleData(eStyleStruct_Text,(const nsStyleStruct *&)textStyle);
// check if halign is set on the cell
// cells do not inherited halign from the row or rowgroup
if (textStyle->mTextAlign.GetUnit() == eStyleUnit_Enumerated)
{
if (textStyle->mTextAlign.GetIntValue() != NS_STYLE_TEXT_ALIGN_DEFAULT)
return; // valign is already set on this cell
}
// check if halign is set on the cell's ROW (or ROWGROUP by inheritance)
nsIFrame *rowFrame;
aTableFrame->GetContentParent(rowFrame);
const nsStyleText* rowTextStyle;
rowFrame->GetStyleData(eStyleStruct_Text,(const nsStyleStruct *&)rowTextStyle);
if (rowTextStyle->mTextAlign.GetUnit() == eStyleUnit_Enumerated)
{
nsStyleText* mutableTextStyle = (nsStyleText*)mStyleContext->GetMutableStyleData(eStyleStruct_Text);
mutableTextStyle->mTextAlign.SetIntValue(rowTextStyle->mTextAlign.GetIntValue(), eStyleUnit_Enumerated);
return; // halign set from ROW info
}
// check if halign is set on the cell's COL (or COLGROUP by inheritance)
nsTableColFrame *colFrame;
PRInt32 colIndex;
GetColIndex(colIndex);
aTableFrame->GetColumnFrame(colIndex, colFrame);
const nsStyleText* colTextStyle;
colFrame->GetStyleData(eStyleStruct_Text,(const nsStyleStruct *&)colTextStyle);
if (colTextStyle->mTextAlign.GetUnit() == eStyleUnit_Enumerated)
{
nsStyleText* mutableTextStyle = (nsStyleText*)mStyleContext->GetMutableStyleData(eStyleStruct_Text);
mutableTextStyle->mTextAlign.SetIntValue(colTextStyle->mTextAlign.GetIntValue(), eStyleUnit_Enumerated);
return; // halign set from COL info
}
// otherwise, set the vertical align attribute to the HTML default (center for TH, left for TD and all others)
nsStyleText* mutableTextStyle = (nsStyleText*)mStyleContext->GetMutableStyleData(eStyleStruct_Text);
nsIAtom *tag=nsnull;
if (nsnull!=mContent)
mContent->GetTag(tag);
if (nsHTMLAtoms::th==tag)
mutableTextStyle->mVerticalAlign.SetIntValue(NS_STYLE_TEXT_ALIGN_CENTER, eStyleUnit_Enumerated);
else
mutableTextStyle->mVerticalAlign.SetIntValue(NS_STYLE_TEXT_ALIGN_LEFT, eStyleUnit_Enumerated);
#endif
}
// Subclass hook for style post processing
NS_METHOD nsTableCellFrame::DidSetStyleContext(nsIPresContext* aPresContext)
{
#ifdef NOISY_STYLE
printf("nsTableCellFrame::DidSetStyleContext \n");
#endif
MapBorderMarginPadding(aPresContext);
mStyleContext->RecalcAutomaticData(aPresContext);
return NS_OK;
}
NS_IMPL_ISUPPORTS_INHERITED(nsTableCellFrame, nsHTMLContainerFrame, nsITableCellLayout)
/* ----- global methods ----- */
nsresult
NS_NewTableCellFrame(nsIFrame** aNewFrame)
{
NS_PRECONDITION(aNewFrame, "null OUT ptr");
if (nsnull == aNewFrame) {
return NS_ERROR_NULL_POINTER;
}
nsTableCellFrame* it = new nsTableCellFrame;
if (nsnull == it) {
return NS_ERROR_OUT_OF_MEMORY;
}
*aNewFrame = it;
return NS_OK;
}
/* ----- methods from CellLayoutData ----- */
/**
* Given a frame and an edge, find the margin
*
**/
nscoord nsTableCellFrame::GetMargin(nsIFrame* aFrame, PRUint8 aEdge) const
{
nscoord result = 0;
if (aFrame)
{
const nsStyleSpacing* spacing;
aFrame->GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct*&)spacing);
nsMargin margin;
spacing->CalcMarginFor(aFrame, margin);
switch (aEdge)
{
case NS_SIDE_TOP:
result = margin.top;
break;
case NS_SIDE_RIGHT:
result = margin.right;
break;
case NS_SIDE_BOTTOM:
result = margin.bottom;
break;
case NS_SIDE_LEFT:
result = margin.left;
break;
}
}
return result;
}
/**
* Given an Edge, find the opposing edge (top<-->bottom, left<-->right)
*
**/
PRUint8 nsTableCellFrame::GetOpposingEdge(PRUint8 aEdge)
{
PRUint8 result;
switch (aEdge)
{
case NS_SIDE_LEFT:
result = NS_SIDE_RIGHT;
break;
case NS_SIDE_RIGHT:
result = NS_SIDE_LEFT;
break;
case NS_SIDE_TOP:
result = NS_SIDE_BOTTOM;
break;
case NS_SIDE_BOTTOM:
result = NS_SIDE_TOP;
break;
default:
result = NS_SIDE_TOP;
}
return result;
}
/**
* Given a List of cell layout data, compare the edges to see which has the
* border with the highest precidence.
*
**/
nscoord nsTableCellFrame::FindLargestMargin(nsVoidArray* aList,PRUint8 aEdge)
{
nscoord result = 0;
PRInt32 index = 0;
PRInt32 count = 0;
NS_ASSERTION(aList,"a List must be valid");
count = aList->Count();
if (count)
{
nsIFrame* frame;
nscoord value = 0;
while (index < count)
{
frame = (nsIFrame*)(aList->ElementAt(index++));
value = GetMargin(frame, aEdge);
if (value > result)
result = value;
}
}
return result;
}
void nsTableCellFrame::GetCellBorder(nsMargin &aBorder, nsTableFrame *aTableFrame)
{
aBorder.left = aBorder.right = aBorder.top = aBorder.bottom = 0;
if (nsnull==aTableFrame) {
return;
}
if (NS_STYLE_BORDER_COLLAPSE==aTableFrame->GetBorderCollapseStyle()) {
aBorder = mBorderEdges.mMaxBorderWidth;
} else {
const nsStyleSpacing* spacing;
GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct*&)spacing);
spacing->GetBorder(aBorder);
}
}
void nsTableCellFrame::CalculateMargins(nsTableFrame* aTableFrame,
nsVoidArray* aBoundaryCells[4])
{
// By default the margin is just the margin found in the
// table cells style
const nsStyleSpacing* spacing;
GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct*&)spacing);
spacing->CalcMarginFor(this, mMargin);
// Left and Top Margins are collapsed with their neightbors
// Right and Bottom Margins are simple left as they are
nscoord value;
// The left and top sides margins are the difference between
// their inherint value and the value of the margin of the
// object to the left or right of them.
value = FindLargestMargin(aBoundaryCells[NS_SIDE_LEFT],NS_SIDE_RIGHT);
if (value > mMargin.left)
mMargin.left = 0;
else
mMargin.left -= value;
value = FindLargestMargin(aBoundaryCells[NS_SIDE_TOP],NS_SIDE_BOTTOM);
if (value > mMargin.top)
mMargin.top = 0;
else
mMargin.top -= value;
}
void nsTableCellFrame::RecalcLayoutData(nsTableFrame* aTableFrame,
nsVoidArray* aBoundaryCells[4])
{
CalculateBorders(aTableFrame, aBoundaryCells);
CalculateMargins(aTableFrame, aBoundaryCells);
mCalculated = NS_OK;
}
NS_IMETHODIMP
nsTableCellFrame::GetFrameType(nsIAtom** aType) const
{
NS_PRECONDITION(nsnull != aType, "null OUT parameter pointer");
*aType = nsLayoutAtoms::tableCellFrame;
NS_ADDREF(*aType);
return NS_OK;
}
NS_IMETHODIMP
nsTableCellFrame::GetFrameName(nsString& aResult) const
{
return MakeFrameName("TableCell", aResult);
}
void nsTableCellFrame::SetCollapseOffsetX(nscoord aXOffset)
{
mCollapseOffset.x = aXOffset;
}
void nsTableCellFrame::SetCollapseOffsetY(nscoord aYOffset)
{
mCollapseOffset.y = aYOffset;
}
nsPoint nsTableCellFrame::GetCollapseOffset()
{
return mCollapseOffset;
}
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