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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"
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
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);
}
}
}
}
void nsTableCellFrame::SetBorderEdgeLength(PRUint8 aSide,
PRInt32 aIndex,
nscoord aLength)
{
if ((NS_SIDE_LEFT==aSide) || (NS_SIDE_RIGHT==aSide))
{
PRInt32 rowIndex = aIndex-GetRowIndex();
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 (eFramePaintLayer_Underlay == 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);
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
{
//printf("-- Paint cell (%d %d)\n", GetRowIndex(), GetColIndex());
nsCSSRendering::PaintBorderEdges(aPresContext, aRenderingContext, this,
aDirtyRect, rect, &mBorderEdges, mStyleContext, skipSides);
}
}
}
}
}
// for debug...
if ((eFramePaintLayer_Overlay == aWhichLayer) && GetShowFrameBorders()) {
aRenderingContext.SetColor(NS_RGB(0, 0, 128));
aRenderingContext.DrawRect(0, 0, mRect.width, mRect.height);
}
PaintChildren(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
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;
}
void nsTableCellFrame::SetBorderEdge(PRUint8 aSide,
PRInt32 aRowIndex,
PRInt32 aColIndex,
nsBorderEdge *aBorder,
nscoord aOddAmountToAdd)
{
nsBorderEdge *border = nsnull;
switch (aSide)
{
case NS_SIDE_TOP:
{
PRInt32 colIndex = aColIndex-GetColIndex();
border = (nsBorderEdge *)(mBorderEdges.mEdges[aSide].ElementAt(colIndex));
mBorderEdges.mMaxBorderWidth.top = PR_MAX(aBorder->mWidth+aOddAmountToAdd, mBorderEdges.mMaxBorderWidth.top);
break;
}
case NS_SIDE_BOTTOM:
{
PRInt32 colIndex = aColIndex-GetColIndex();
border = (nsBorderEdge *)(mBorderEdges.mEdges[aSide].ElementAt(colIndex));
mBorderEdges.mMaxBorderWidth.bottom = PR_MAX(aBorder->mWidth+aOddAmountToAdd, mBorderEdges.mMaxBorderWidth.bottom);
break;
}
case NS_SIDE_LEFT:
{
PRInt32 rowIndex = aRowIndex-GetRowIndex();
border = (nsBorderEdge *)(mBorderEdges.mEdges[aSide].ElementAt(rowIndex));
mBorderEdges.mMaxBorderWidth.left = PR_MAX(aBorder->mWidth+aOddAmountToAdd, mBorderEdges.mMaxBorderWidth.left);
break;
}
case NS_SIDE_RIGHT:
{
PRInt32 rowIndex = aRowIndex-GetRowIndex();
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;
}
/**
*/
NS_METHOD nsTableCellFrame::Reflow(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
#ifdef NS_DEBUG
//PreReflowCheck();
#endif
nsresult rv = NS_OK;
// 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;
nscoord x = 0;
// 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;
GetCellBorder (borderPadding, tableFrame);
nsMargin padding;
spacing->GetPadding(padding);
borderPadding += padding;
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)
{
// XXX 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)
{
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;
}
}
}
// 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, firstKid, aReflowState,
availSize);
ReflowChild(firstKid, aPresContext, kidSize, kidReflowState, aStatus);
#ifdef NS_DEBUG
if (kidSize.width > availSize.width)
{
printf("WARNING: cell ");
nsAutoString tmp;
firstKid->GetFrameName(tmp);
fputs(tmp, stdout);
printf(" content returned desired width %d given avail width %d\n",
kidSize.width, availSize.width);
}
#endif
// Nav4 hack for 0 dimensioned cells.
// Empty cells are assigned a width and height of 4px
// see testcase "cellHeights.html"
if (eReflowReason_Initial == aReflowState.reason)
{
if ((0==kidSize.width) && (0==kidSize.height))
SetContentEmpty(PR_TRUE);
else
SetContentEmpty(PR_FALSE);
}
if (0==kidSize.width)
{
if (eReflowReason_Initial == aReflowState.reason)
{
float p2t;
aPresContext.GetScaledPixelsToTwips(p2t);
kidSize.width=NSIntPixelsToTwips(4, p2t);
if (nsnull!=aDesiredSize.maxElementSize && 0==pMaxElementSize->width)
pMaxElementSize->width=NSIntPixelsToTwips(4, p2t);
if (gsDebug) printf ("setting initial child width from 0 to %d for nav4 compatibility\n", NSIntPixelsToTwips(4, p2t));
}
else // empty content has to be forced to the assigned width for resize or incremental reflow
kidSize.width = kidReflowState.availableWidth;
}
if (0==kidSize.height)
{
float p2t;
aPresContext.GetScaledPixelsToTwips(p2t);
kidSize.height=NSIntPixelsToTwips(4, p2t);
if (nsnull!=aDesiredSize.maxElementSize && 0==pMaxElementSize->width)
pMaxElementSize->height=NSIntPixelsToTwips(4, p2t);
if (gsDebug) printf ("setting child height from 0 to %d for nav4 compatibility\n", NSIntPixelsToTwips(4, p2t));
}
// end Nav4 hack for 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
// the height can be set w/o being restricted by aMaxSize.height
nscoord cellHeight = kidSize.height;
// NAV4 compatibility: only add insets if cell content was not 0 height
if (0!=kidSize.height)
cellHeight += 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;
#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;
}
NS_METHOD
nsTableCellFrame::CreateContinuingFrame(nsIPresContext& aPresContext,
nsIFrame* aParent,
nsIStyleContext* aStyleContext,
nsIFrame*& aContinuingFrame)
{
nsTableCellFrame* cf = new nsTableCellFrame;
if (nsnull == cf) {
return NS_ERROR_OUT_OF_MEMORY;
}
cf->Init(aPresContext, mContent, aParent, aStyleContext);
cf->AppendToFlow(this);
cf->InitCellFrame(GetColIndex());
aContinuingFrame = cf;
// Create a continuing body frame
nsIFrame* childList;
nsIStyleContext* kidSC;
nsIFrame* firstKid = mFrames.FirstChild();
firstKid->GetStyleContext(kidSC);
firstKid->CreateContinuingFrame(aPresContext, cf, kidSC, childList);
NS_RELEASE(kidSC);
cf->SetInitialChildList(aPresContext, nsnull, childList);
return NS_OK;
}
/**
*
* 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)
{
PRInt32 result = 0;
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 padding = tableFrame->GetCellPadding();
nscoord spacingX = tableFrame->GetCellSpacingX();
nscoord spacingY = tableFrame->GetCellSpacingY();
nscoord border = 1;
// 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);
spacingData->mMargin.SetTop(spacingY);
spacingData->mMargin.SetLeft(spacingX);
spacingData->mMargin.SetBottom(spacingY);
spacingData->mMargin.SetRight(spacingX);
spacingData->mPadding.SetTop(padding);
spacingData->mPadding.SetLeft(padding);
spacingData->mPadding.SetBottom(padding);
spacingData->mPadding.SetRight(padding);
// 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
float p2t;
aPresContext->GetScaledPixelsToTwips(p2t);
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;
aTableFrame->GetColumnFrame(GetColIndex(), 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;
aTableFrame->GetColumnFrame(GetColIndex(), 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_METHOD
nsTableCellFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
NS_PRECONDITION(0 != aInstancePtr, "null ptr");
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
return nsContainerFrame::QueryInterface(aIID, aInstancePtr);
}
/* ----- global methods ----- */
nsresult
NS_NewTableCellFrame(nsIFrame*& aResult)
{
nsIFrame* it = new nsTableCellFrame;
if (nsnull == it) {
return NS_ERROR_OUT_OF_MEMORY;
}
aResult = 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;
aTableFrame->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::GetFrameName(nsString& aResult) const
{
return MakeFrameName("TableCell", aResult);
}
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