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pjs/layout/tables/nsTableRowGroupFrame.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 1.1 (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/NPL/
*
* 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 Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#include "nsCOMPtr.h"
#include "nsTableRowGroupFrame.h"
#include "nsTableRowFrame.h"
#include "nsTableFrame.h"
#include "nsTableCellFrame.h"
#include "nsIRenderingContext.h"
#include "nsIPresContext.h"
#include "nsIStyleContext.h"
#include "nsStyleConsts.h"
#include "nsIContent.h"
#include "nsIView.h"
#include "nsIPtr.h"
#include "nsIReflowCommand.h"
#include "nsHTMLIIDs.h"
#include "nsIDeviceContext.h"
#include "nsHTMLAtoms.h"
#include "nsIStyleSet.h"
#include "nsIPresShell.h"
#include "nsLayoutAtoms.h"
#include "nsCSSRendering.h"
#include "nsHTMLParts.h"
NS_DEF_PTR(nsIStyleContext);
NS_DEF_PTR(nsIContent);
/* ----------- nsTableRowGroupFrame ---------- */
nsresult
nsTableRowGroupFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
static NS_DEFINE_IID(kITableRowGroupIID, NS_ITABLEROWGROUPFRAME_IID);
if (aIID.Equals(kITableRowGroupIID)) {
*aInstancePtr = (void*)this;
return NS_OK;
} else {
return nsHTMLContainerFrame::QueryInterface(aIID, aInstancePtr);
}
}
NS_METHOD nsTableRowGroupFrame::GetRowCount(PRInt32 &aCount, PRBool aDeepCount)
{
// init out-param
aCount=0;
// loop through children, adding one to aCount for every legit row
nsIFrame *childFrame = GetFirstFrame();
while (PR_TRUE)
{
if (nsnull==childFrame)
break;
const nsStyleDisplay *childDisplay;
childFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
if (NS_STYLE_DISPLAY_TABLE_ROW == childDisplay->mDisplay)
aCount++;
else if (aDeepCount && NS_STYLE_DISPLAY_TABLE_ROW_GROUP == childDisplay->mDisplay) {
PRInt32 childRowGroupCount;
((nsTableRowGroupFrame*)childFrame)->GetRowCount(childRowGroupCount);
aCount += childRowGroupCount;
}
GetNextFrame(childFrame, &childFrame);
}
return NS_OK;
}
PRInt32 nsTableRowGroupFrame::GetStartRowIndex()
{
PRInt32 result = -1;
nsIFrame *childFrame = GetFirstFrame();
while (PR_TRUE)
{
if (nsnull==childFrame)
break;
const nsStyleDisplay *childDisplay;
childFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
if (NS_STYLE_DISPLAY_TABLE_ROW == childDisplay->mDisplay)
{
result = ((nsTableRowFrame *)childFrame)->GetRowIndex();
break;
}
else if (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == childDisplay->mDisplay) {
result = ((nsTableRowGroupFrame*)childFrame)->GetStartRowIndex();
if (result != -1)
break;
}
GetNextFrame(childFrame, &childFrame);
}
return result;
}
NS_METHOD nsTableRowGroupFrame::GetMaxColumns(PRInt32 &aMaxColumns)
{
aMaxColumns=0;
// loop through children, remembering the max of the columns in each row
nsIFrame *childFrame = GetFirstFrame();
while (PR_TRUE)
{
if (nsnull==childFrame)
break;
const nsStyleDisplay *childDisplay;
childFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
if (NS_STYLE_DISPLAY_TABLE_ROW == childDisplay->mDisplay)
{
PRInt32 colCount = ((nsTableRowFrame *)childFrame)->GetMaxColumns();
aMaxColumns = PR_MAX(aMaxColumns, colCount);
}
else if (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == childDisplay->mDisplay) {
PRInt32 rgColCount;
((nsTableRowGroupFrame*)childFrame)->GetMaxColumns(rgColCount);
aMaxColumns = PR_MAX(aMaxColumns, rgColCount);
}
GetNextFrame(childFrame, &childFrame);
}
return NS_OK;
}
nsresult
nsTableRowGroupFrame::InitRepeatedFrame(nsTableRowGroupFrame* aHeaderFooterFrame)
{
nsIFrame* originalRowFrame;
nsIFrame* copyRowFrame = GetFirstFrame();
aHeaderFooterFrame->FirstChild(nsnull, &originalRowFrame);
while (copyRowFrame) {
// Set the row frame index
int rowIndex = ((nsTableRowFrame*)originalRowFrame)->GetRowIndex();
((nsTableRowFrame*)copyRowFrame)->SetRowIndex(rowIndex);
// For each table cell frame set its column index
nsIFrame* originalCellFrame;
nsIFrame* copyCellFrame;
originalRowFrame->FirstChild(nsnull, &originalCellFrame);
copyRowFrame->FirstChild(nsnull, &copyCellFrame);
while (copyCellFrame) {
nsIAtom* frameType;
copyCellFrame->GetFrameType(&frameType);
if (nsLayoutAtoms::tableCellFrame == frameType) {
#ifdef NS_DEBUG
nsIContent* content1;
nsIContent* content2;
originalCellFrame->GetContent(&content1);
copyCellFrame->GetContent(&content2);
NS_ASSERTION(content1 == content2, "cell frames have different content");
NS_IF_RELEASE(content1);
NS_IF_RELEASE(content2);
#endif
PRInt32 colIndex;
((nsTableCellFrame*)originalCellFrame)->GetColIndex(colIndex);
((nsTableCellFrame*)copyCellFrame)->InitCellFrame(colIndex);
}
NS_IF_RELEASE(frameType);
// Move to the next cell frame
copyCellFrame->GetNextSibling(&copyCellFrame);
originalCellFrame->GetNextSibling(&originalCellFrame);
}
// Move to the next row frame
GetNextFrame(originalRowFrame, &originalRowFrame);
GetNextFrame(copyRowFrame, &copyRowFrame);
}
return NS_OK;
}
NS_METHOD nsTableRowGroupFrame::Paint(nsIPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer)
{
nsresult rv;
if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) {
nsCompatibility mode;
aPresContext->GetCompatibilityMode(&mode);
if (eCompatibility_Standard == mode) {
const nsStyleDisplay* disp =
(const nsStyleDisplay*)mStyleContext->GetStyleData(eStyleStruct_Display);
if (disp->mVisible) {
const nsStyleSpacing* spacing =
(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
const nsStyleColor* color =
(const nsStyleColor*)mStyleContext->GetStyleData(eStyleStruct_Color);
nsTableFrame* tableFrame = nsnull;
rv = nsTableFrame::GetTableFrame(this, tableFrame);
if (NS_FAILED(rv) || (nsnull == tableFrame)) {
return rv;
}
nscoord halfCellSpacingY =
NSToCoordRound(((float)tableFrame->GetCellSpacingY()) / (float)2);
// every row group is short by the ending cell spacing X
nsRect rect(0, 0, mRect.width, mRect.height);
nsIFrame* firstRowGroup = nsnull;
tableFrame->FirstChild(nsnull, &firstRowGroup);
// first row group may have gotten too much cell spacing Y
if (tableFrame->GetRowCount() != 1) {
if (this == firstRowGroup) {
rect.height -= halfCellSpacingY;
}
else {
rect.height += halfCellSpacingY;
rect.y -= halfCellSpacingY;
}
}
nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *color, *spacing, 0, 0);
}
}
}
#ifdef DEBUG
// for debug...
if ((NS_FRAME_PAINT_LAYER_DEBUG == aWhichLayer) && GetShowFrameBorders()) {
aRenderingContext.SetColor(NS_RGB(0,255,0));
aRenderingContext.DrawRect(0, 0, mRect.width, mRect.height);
}
#endif
PaintChildren(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
return NS_OK;
/*nsFrame::Paint(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);*/
}
PRIntn
nsTableRowGroupFrame::GetSkipSides() const
{
PRIntn skip = 0;
if (nsnull != mPrevInFlow) {
skip |= 1 << NS_SIDE_TOP;
}
if (nsnull != mNextInFlow) {
skip |= 1 << NS_SIDE_BOTTOM;
}
return skip;
}
// aDirtyRect is in our coordinate system
// child rect's are also in our coordinate system
/** overloaded method from nsContainerFrame. The difference is that
* we don't want to clip our children, so a cell can do a rowspan
*/
void nsTableRowGroupFrame::PaintChildren(nsIPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer)
{
nsIFrame* kid = GetFirstFrame();
while (nsnull != kid) {
nsIView *pView;
kid->GetView(aPresContext, &pView);
if (nsnull == pView) {
PRBool clipState;
nsRect kidRect;
kid->GetRect(kidRect);
nsRect damageArea(aDirtyRect);
// Translate damage area into kid's coordinate system
nsRect kidDamageArea(damageArea.x - kidRect.x, damageArea.y - kidRect.y,
damageArea.width, damageArea.height);
aRenderingContext.PushState();
aRenderingContext.Translate(kidRect.x, kidRect.y);
kid->Paint(aPresContext, aRenderingContext, kidDamageArea, aWhichLayer);
#ifdef DEBUG
if ((NS_FRAME_PAINT_LAYER_DEBUG == aWhichLayer) &&
GetShowFrameBorders()) {
aRenderingContext.SetColor(NS_RGB(255,0,0));
aRenderingContext.DrawRect(0, 0, kidRect.width, kidRect.height);
}
#endif
aRenderingContext.PopState(clipState);
}
GetNextFrame(kid, &kid);
}
}
/* we overload this here because rows have children that can span outside of themselves.
* so the default "get the child rect, see if it contains the event point" action isn't
* sufficient. We have to ask the row if it has a child that contains the point.
*/
NS_IMETHODIMP
nsTableRowGroupFrame::GetFrameForPoint(nsIPresContext* aPresContext,
const nsPoint& aPoint,
nsIFrame** aFrame)
{
nsIFrame* kid;
nsRect kidRect;
nsPoint tmp;
*aFrame = this;
FirstChild(nsnull, &kid);
while (nsnull != kid) {
kid->GetRect(kidRect);
const nsStyleDisplay *childDisplay;
kid->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
if (NS_STYLE_DISPLAY_TABLE_ROW == childDisplay->mDisplay) {
if (((nsTableRowFrame*)(kid))->Contains(aPoint)) {
tmp.MoveTo(aPoint.x - kidRect.x, aPoint.y - kidRect.y);
return kid->GetFrameForPoint(aPresContext, tmp, aFrame);
}
}
else {
if (kidRect.Contains(aPoint)) {
tmp.MoveTo(aPoint.x - kidRect.x, aPoint.y - kidRect.y);
return kid->GetFrameForPoint(aPresContext, tmp, aFrame);
}
}
GetNextFrame(kid, &kid);
}
return NS_ERROR_FAILURE;
}
// Position and size aKidFrame and update our reflow state. The origin of
// aKidRect is relative to the upper-left origin of our frame
void nsTableRowGroupFrame::PlaceChild(nsIPresContext* aPresContext,
RowGroupReflowState& aReflowState,
nsIFrame* aKidFrame,
nsHTMLReflowMetrics& aDesiredSize,
nscoord aX,
nscoord aY,
nsSize* aMaxElementSize,
nsSize& aKidMaxElementSize)
{
// Place and size the child
FinishReflowChild(aKidFrame, aPresContext, aDesiredSize, aX, aY, 0);
// Adjust the running y-offset
aReflowState.y += aDesiredSize.height;
// If our height is constrained then update the available height
if (PR_FALSE == aReflowState.unconstrainedHeight) {
aReflowState.availSize.height -= aDesiredSize.height;
}
// Update the maximum element size
if (PR_TRUE==aReflowState.firstRow)
{
aReflowState.firstRow = PR_FALSE;
if (nsnull != aMaxElementSize) {
aMaxElementSize->width = aKidMaxElementSize.width;
aMaxElementSize->height = aKidMaxElementSize.height;
}
}
else if (nsnull != aMaxElementSize) {
aMaxElementSize->width = PR_MAX(aMaxElementSize->width, aKidMaxElementSize.width);
}
}
/**
* Reflow the frames we've already created
*
* @param aPresContext presentation context to use
* @param aReflowState current inline state
* @return true if we successfully reflowed all the mapped children and false
* otherwise, e.g. we pushed children to the next in flow
*/
NS_METHOD nsTableRowGroupFrame::ReflowMappedChildren(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
RowGroupReflowState& aReflowState,
nsReflowStatus& aStatus,
nsTableRowFrame * aStartFrame,
nsReflowReason aReason,
PRBool aDoSiblings,
PRBool aDirtyOnly)
{
nsSize kidMaxElementSize;
nsSize* pKidMaxElementSize = (nsnull != aDesiredSize.maxElementSize) ? &kidMaxElementSize : nsnull;
nsresult rv = NS_OK;
if (!ContinueReflow(aPresContext, aReflowState.y, aReflowState.availSize.height))
return rv;
nsIFrame* kidFrame;
if (nsnull==aStartFrame) {
kidFrame = GetFirstFrameForReflow(aPresContext);
ReflowBeforeRowLayout(aPresContext, aDesiredSize, aReflowState, aStatus, aReason);
}
else
kidFrame = aStartFrame;
PRUint8 borderStyle = aReflowState.tableFrame->GetBorderCollapseStyle();
for ( ; nsnull != kidFrame; )
{
// Get the frame state bits
nsFrameState frameState;
kidFrame->GetFrameState(&frameState);
// See if we should only reflow the dirty child frames
PRBool doReflowChild = PR_TRUE;
if (aDirtyOnly) {
if ((frameState & NS_FRAME_IS_DIRTY) == 0) {
doReflowChild = PR_FALSE;
}
}
// Reflow the row frame
if (doReflowChild) {
nsSize kidAvailSize(aReflowState.availSize);
if (0>=kidAvailSize.height)
kidAvailSize.height = 1; // XXX: HaCk - we don't handle negative heights yet
nsHTMLReflowMetrics desiredSize(pKidMaxElementSize);
desiredSize.width=desiredSize.height=desiredSize.ascent=desiredSize.descent=0;
// Reflow the child into the available space, giving it as much room as
// it wants. We'll deal with splitting later after we've computed the row
// heights, taking into account cells with row spans...
kidAvailSize.height = NS_UNCONSTRAINEDSIZE;
nsReflowReason reason = aReason;
if (aDirtyOnly) {
if (frameState & NS_FRAME_FIRST_REFLOW) {
// Newly inserted frame
reason = eReflowReason_Initial;
}
}
nsHTMLReflowState kidReflowState(aPresContext, aReflowState.reflowState, kidFrame,
kidAvailSize, reason);
// If this isn't the first row frame, then we can't be at the top of
// the page anymore...
if (kidFrame != GetFirstFrame()) {
kidReflowState.isTopOfPage = PR_FALSE;
}
if (aReflowState.tableFrame->RowGroupsShouldBeConstrained()) {
// Only applies to the tree widget.
const nsStyleDisplay *rowDisplay;
kidFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)rowDisplay));
if (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == rowDisplay->mDisplay &&
aReflowState.availSize.height != NS_UNCONSTRAINEDSIZE) {
kidReflowState.availableHeight = aReflowState.availSize.height;
}
}
rv = ReflowChild(kidFrame, aPresContext, desiredSize, kidReflowState,
0, aReflowState.y, 0, aStatus);
// Place the child
nsRect kidRect (0, aReflowState.y, desiredSize.width, desiredSize.height);
PlaceChild(aPresContext, aReflowState, kidFrame, desiredSize, 0,
aReflowState.y, aDesiredSize.maxElementSize, kidMaxElementSize);
/* if the table has collapsing borders, we need to reset the length of the shared vertical borders
* for the table and the cells that overlap this row
*/
if ((eReflowReason_Initial != aReflowState.reflowState.reason) && (NS_STYLE_BORDER_COLLAPSE==borderStyle))
{
const nsStyleDisplay *childDisplay;
kidFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
if (NS_STYLE_DISPLAY_TABLE_ROW == childDisplay->mDisplay)
{
PRInt32 rowIndex = ((nsTableRowFrame*)kidFrame)->GetRowIndex();
aReflowState.tableFrame->SetBorderEdgeLength(NS_SIDE_LEFT,
rowIndex,
kidRect.height);
aReflowState.tableFrame->SetBorderEdgeLength(NS_SIDE_RIGHT,
rowIndex,
kidRect.height);
PRInt32 colCount = aReflowState.tableFrame->GetColCount();
PRInt32 colIndex = 0;
nsIFrame *cellFrame;
for (colIndex = 0; colIndex < colCount; colIndex++) {
cellFrame = aReflowState.tableFrame->GetCellInfoAt(rowIndex, colIndex);
if (cellFrame) {
const nsStyleDisplay *cellDisplay;
cellFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)cellDisplay));
if (NS_STYLE_DISPLAY_TABLE_CELL == cellDisplay->mDisplay) {
((nsTableCellFrame *)(cellFrame))->SetBorderEdgeLength(NS_SIDE_LEFT,
rowIndex,
kidRect.height);
((nsTableCellFrame *)(cellFrame))->SetBorderEdgeLength(NS_SIDE_RIGHT,
rowIndex,
kidRect.height);
}
}
}
}
}
} else {
// Adjust the running y-offset so we know where the next row should
// be placed
nsSize kidSize;
kidFrame->GetSize(kidSize);
aReflowState.y += kidSize.height;
}
if (PR_FALSE==aDoSiblings)
break;
if (!ContinueReflow(aPresContext, aReflowState.y, aReflowState.availSize.height))
break;
// Get the next child
GetNextFrameForReflow(aPresContext, kidFrame, &kidFrame);
}
// Call our post-row reflow hook
ReflowAfterRowLayout(aPresContext, aDesiredSize, aReflowState, aStatus, aReason);
return rv;
}
/**
* Pull-up all the row frames from our next-in-flow
*/
NS_METHOD nsTableRowGroupFrame::PullUpAllRowFrames(nsIPresContext* aPresContext)
{
if (mNextInFlow) {
nsTableRowGroupFrame* nextInFlow = (nsTableRowGroupFrame*)mNextInFlow;
while (nsnull != nextInFlow) {
// Any frames on the next-in-flow's overflow list?
nsIFrame* nextOverflowFrames = nextInFlow->GetOverflowFrames(aPresContext,
PR_TRUE);
if (nextOverflowFrames) {
// Yes, append them to its child list
nextInFlow->mFrames.AppendFrames(nextInFlow, nextOverflowFrames);
}
// Any row frames?
if (nextInFlow->mFrames.NotEmpty()) {
// When pushing and pulling frames we need to check for whether any
// views need to be reparented.
for (nsIFrame* f = nextInFlow->GetFirstFrame(); f; GetNextFrame(f, &f)) {
nsHTMLContainerFrame::ReparentFrameView(aPresContext, f, nextInFlow, this);
}
// Append them to our child list
mFrames.AppendFrames(this, nextInFlow->mFrames);
}
// Move to the next-in-flow
nextInFlow->GetNextInFlow((nsIFrame**)&nextInFlow);
}
}
return NS_OK;
}
void nsTableRowGroupFrame::GetNextRowSibling(nsIFrame** aRowFrame)
{
if (!*aRowFrame) return;
GetNextFrame(*aRowFrame, aRowFrame);
while(*aRowFrame) {
const nsStyleDisplay *display;
(*aRowFrame)->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)display));
if (NS_STYLE_DISPLAY_TABLE_ROW == display->mDisplay) {
return;
}
GetNextFrame(*aRowFrame, aRowFrame);
}
}
/* CalculateRowHeights provides default heights for all rows in the rowgroup.
* Actual row heights are ultimately determined by the table, when the table
* height attribute is factored in.
*/
void nsTableRowGroupFrame::CalculateRowHeights(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState)
{
nsTableFrame *tableFrame=nsnull;
nsresult rv = nsTableFrame::GetTableFrame(this, tableFrame);
if (NS_FAILED(rv) || nsnull==tableFrame)
return;
// all table cells have the same top and bottom margins, namely cellSpacingY
nscoord cellSpacingY = tableFrame->GetCellSpacingY();
// iterate children and for each row get the height of the tallest cell. Keep
// track of whether any of the rows have a cell that spans into the row
PRBool hasRowSpanningCell = PR_FALSE;
PRInt32 numRows;
GetRowCount(numRows, PR_FALSE);
nscoord* rowHeights = nsnull;
if (numRows > 0) {
rowHeights = new nscoord[numRows];
if (!rowHeights) return;
nsCRT::memset (rowHeights, 0, numRows*sizeof(nscoord));
} // else - tree row groups need not have rows directly beneath them
/* Step 1: get the height of the tallest cell in the row and save it for
* pass 2. This height is for table cells that originate in this
* row and that don't span into the rows that follow
*/
nsIFrame* rowFrame = GetFirstFrame();
PRInt32 rowIndex = 0;
// For row groups that are split across pages, the first row frame won't
// necessarily be index 0
PRInt32 startRowIndex = -1;
const nsStyleDisplay *childDisplay;
while (nsnull != rowFrame)
{
rowFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
if (NS_STYLE_DISPLAY_TABLE_ROW == childDisplay->mDisplay)
{
if (startRowIndex == -1) {
startRowIndex = ((nsTableRowFrame*)rowFrame)->GetRowIndex();
}
// get the height of the tallest cell in the row (excluding cells that span rows)
// XXX GetChildMaxTopMargin and GetChildMaxBottomMargin should be removed/simplified because
// according to CSS, all table cells must have the same top/bottom and left/right margins.
nscoord maxCellHeight = ((nsTableRowFrame*)rowFrame)->GetTallestChild();
nscoord maxCellTopMargin = ((nsTableRowFrame*)rowFrame)->GetChildMaxTopMargin();
nscoord maxCellBottomMargin = ((nsTableRowFrame*)rowFrame)->GetChildMaxBottomMargin();
nscoord maxRowHeight = maxCellHeight + maxCellTopMargin + maxCellBottomMargin;
// only the top row has a top margin. Other rows start at the bottom of the prev row's bottom margin.
// save the row height for pass 2 below
rowHeights[rowIndex] = maxRowHeight;
// See if a cell spans into the row. If so we'll have to do step 2
if (!hasRowSpanningCell) {
if (tableFrame->RowIsSpannedInto(rowIndex + startRowIndex)) {
hasRowSpanningCell = PR_TRUE;
}
}
rowIndex++;
}
// Get the next row
GetNextFrame(rowFrame, &rowFrame);
}
/* Step 2: Now account for cells that span rows. We only do this if there are cells
* that span rows.
* A spanning cell's height is the sum of the heights of the rows it spans,
* or it's own desired height, whichever is greater.
* If the cell's desired height is the larger value, resize the rows and contained
* cells by an equal percentage of the additional space.
* We go through this loop twice. The first time, we are adjusting cell heights
* on the fly.
* The second time through the loop, we're ensuring that subsequent row-spanning cells
* didn't change prior calculations.
* Since we are guaranteed to have found the max height spanners the first time through,
* we know we only need two passes, not an arbitrary number.
*/
if (hasRowSpanningCell) {
nscoord deltaY = 0;
for (PRInt32 counter=0; counter<2; counter++)
{
rowFrame = GetFirstFrame();
rowIndex = 0;
while (nsnull != rowFrame)
{
rowFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
if (NS_STYLE_DISPLAY_TABLE_ROW == childDisplay->mDisplay)
{
// check this row for a cell with rowspans
nsIFrame *cellFrame;
rowFrame->FirstChild(nsnull, &cellFrame);
while (nsnull != cellFrame)
{
const nsStyleDisplay *cellChildDisplay;
cellFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)cellChildDisplay));
if (NS_STYLE_DISPLAY_TABLE_CELL == cellChildDisplay->mDisplay)
{
PRInt32 rowSpan = tableFrame->GetEffectiveRowSpan(rowIndex + startRowIndex,
(nsTableCellFrame*)cellFrame);
if (rowSpan > 1)
{ // found a cell with rowspan > 1, determine the height of the rows it
// spans
nscoord heightOfRowsSpanned = 0;
PRInt32 i;
for (i = 0; i < rowSpan; i++) {
heightOfRowsSpanned += rowHeights[rowIndex + i];
}
// reduce the height by top and bottom margins
nscoord availHeightOfRowsSpanned = heightOfRowsSpanned - cellSpacingY - cellSpacingY;
// see if the cell's height fits within the rows it spans. If this is
// pass 1 then use the cell's desired height and not the current height
// of its frame. That way this works for incremental reflow, too
nsSize cellFrameSize;
cellFrame->GetSize(cellFrameSize);
if (0 == counter) {
nsSize cellDesiredSize = ((nsTableCellFrame*)cellFrame)->GetDesiredSize();
cellFrameSize.height = cellDesiredSize.height;
}
if (availHeightOfRowsSpanned >= cellFrameSize.height)
{
// yes the cell's height fits with the available space of the rows it
// spans. Set the cell frame's height
cellFrame->SizeTo(aPresContext, cellFrameSize.width, availHeightOfRowsSpanned);
// Realign cell content based on new height
((nsTableCellFrame*)cellFrame)->VerticallyAlignChild(aPresContext);
}
else
{
// the cell's height is larger than the available space of the rows it
// spans so distribute the excess height to the rows affected
PRInt32 excessHeight = cellFrameSize.height - availHeightOfRowsSpanned;
// for every row starting at the row with the spanning cell and down
// to the last row spanned by the cell
nsTableRowFrame *rowFrameToBeResized = (nsTableRowFrame *)rowFrame;
nscoord excessAllocated = 0;
for (i = rowIndex; i < (rowIndex + rowSpan); i++) {
// The amount of additional space each row gets is based on the
// percentage of space it occupies, i.e. they don't all get the
// same amount of available space
float percent = ((float)rowHeights[i]) / ((float)heightOfRowsSpanned);
// give rows their percentage, except for the last row which gets
// the remainder
nscoord excessForRow = ((i + 1) == (rowIndex + rowSpan)) ?
excessHeight - excessAllocated :
NSToCoordRound(((float)(excessHeight)) * percent);
excessAllocated += excessForRow;
// update the row height
rowHeights[i] += excessForRow;
// Get the next row frame
GetNextRowSibling((nsIFrame**)&rowFrameToBeResized);
}
NS_ASSERTION(excessAllocated == excessHeight, "excess distribution failed");
}
}
}
// Get the next row child (cell frame)
cellFrame->GetNextSibling(&cellFrame);
}
// If this is pass 2 then resize the row to its final size and move the
// row's position if the previous rows have caused a shift
if (1 == counter) {
PRBool movedFrame = (deltaY != 0);
nsRect rowBounds;
// Move the row to the correct position
rowFrame->GetRect(rowBounds); // added
rowBounds.y += deltaY;
// Adjust our running delta
deltaY += rowHeights[rowIndex] - rowBounds.height;
// Resize the row to its final size and position
rowBounds.height = rowHeights[rowIndex];
rowFrame->SetRect(aPresContext, rowBounds);
if (movedFrame) {
// Make sure any views are positioned properly
nsIView* view;
rowFrame->GetView(aPresContext, &view);
if (view) {
nsContainerFrame::PositionFrameView(aPresContext, rowFrame, view);
} else {
nsContainerFrame::PositionChildViews(aPresContext, rowFrame);
}
}
}
rowIndex++;
}
// Get the next rowgroup child (row frame)
GetNextFrame(rowFrame, &rowFrame);
}
}
}
// step 3: notify the rows of their new heights
nscoord rowGroupHeight = 0;
rowFrame = GetFirstFrame();
rowIndex = 0;
while (nsnull != rowFrame)
{
rowFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
if (NS_STYLE_DISPLAY_TABLE_ROW == childDisplay->mDisplay)
{
// Notify the row of the new size
((nsTableRowFrame *)rowFrame)->DidResize(aPresContext, aReflowState);
}
// Update the running row group height. The height includes frames that
// aren't rows as well
nsSize rowSize;
rowFrame->GetSize(rowSize);
rowGroupHeight += rowSize.height;
// Get the next row
GetNextFrame(rowFrame, &rowFrame);
rowIndex++;
}
// Adjust our desired size
aDesiredSize.height = rowGroupHeight;
// cleanup
delete []rowHeights;
}
// Called by IR_TargetIsChild() to adjust the sibling frames that follow
// after an incremental reflow of aKidFrame.
// This function is not used for paginated mode so we don't need to deal
// with continuing frames, and it's only called if aKidFrame has no
// cells that span into it and no cells that span across it. That way
// we don't have to deal with rowspans
nsresult
nsTableRowGroupFrame::AdjustSiblingsAfterReflow(nsIPresContext* aPresContext,
RowGroupReflowState& aReflowState,
nsIFrame* aKidFrame,
nsSize* aMaxElementSize,
nscoord aDeltaY)
{
NS_PRECONDITION(NS_UNCONSTRAINEDSIZE == aReflowState.reflowState.availableHeight,
"we're not in galley mode");
nsIFrame* lastKidFrame = aKidFrame;
// Move the frames that follow aKidFrame by aDeltaY and update the max element
// size
nsIFrame* kidFrame;
for (aKidFrame->GetNextSibling(&kidFrame); kidFrame; kidFrame->GetNextSibling(&kidFrame)) {
// Update the max element size
if (aMaxElementSize) {
nsSize kidMaxElementSize;
((nsTableRowFrame*)kidFrame)->GetMaxElementSize(kidMaxElementSize);
aMaxElementSize->width = PR_MAX(aMaxElementSize->width, kidMaxElementSize.width);
}
// Move the frame if we need to
if (aDeltaY != 0) {
nsPoint origin;
// Adjust the y-origin
kidFrame->GetOrigin(origin);
origin.y += aDeltaY;
kidFrame->WillReflow(aPresContext);
kidFrame->MoveTo(aPresContext, origin.x, origin.y);
}
// Remember the last frame
lastKidFrame = kidFrame;
}
// Update our running y-offset to reflect the bottommost child
nsRect rect;
lastKidFrame->GetRect(rect);
aReflowState.y = rect.YMost();
return NS_OK;
}
nsresult
nsTableRowGroupFrame::SplitRowGroup(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsTableFrame* aTableFrame,
nsReflowStatus& aStatus)
{
nsIFrame* prevRowFrame = nsnull;
nsresult rv = NS_OK;
// Walk each of the row frames looking for the first row frame that
// doesn't fit in the available space
for (nsIFrame* rowFrame = GetFirstFrame(); rowFrame; GetNextFrame(rowFrame, &rowFrame)) {
nsRect bounds;
rowFrame->GetRect(bounds);
if (bounds.YMost() > aReflowState.availableHeight) {
// If this is the first row frame then we need to split it
if (!prevRowFrame) {
// Reflow the row in the available space and have it split
nsSize availSize(aReflowState.availableWidth,
aReflowState.availableHeight - bounds.y);
nsHTMLReflowState rowReflowState(aPresContext, aReflowState, rowFrame,
availSize, eReflowReason_Resize);
nsHTMLReflowMetrics desiredSize(nsnull);
rv = ReflowChild(rowFrame, aPresContext, desiredSize, rowReflowState,
0, 0, NS_FRAME_NO_MOVE_FRAME, aStatus);
rowFrame->SizeTo(aPresContext, desiredSize.width, desiredSize.height);
rowFrame->DidReflow(aPresContext, NS_FRAME_REFLOW_FINISHED);
((nsTableRowFrame *)rowFrame)->DidResize(aPresContext, aReflowState);
aDesiredSize.height = desiredSize.height;
if (NS_FRAME_IS_NOT_COMPLETE(aStatus)) {
#ifdef NS_DEBUG
// Verify it doesn't already have a next-in-flow. The reason it should
// not already have a next-in-flow is that ReflowMappedChildren() reflows
// the row frames with an unconstrained available height
nsIFrame* nextInFlow;
rowFrame->GetNextInFlow(&nextInFlow);
NS_ASSERTION(!nextInFlow, "row frame already has next-in-flow");
#endif
// Create a continuing frame, add it to the child list, and then push it
// and the frames that follow
nsIFrame* contRowFrame;
nsIPresShell* presShell;
nsIStyleSet* styleSet;
aPresContext->GetShell(&presShell);
presShell->GetStyleSet(&styleSet);
NS_RELEASE(presShell);
styleSet->CreateContinuingFrame(aPresContext, rowFrame, this, &contRowFrame);
NS_RELEASE(styleSet);
// Add it to the child list
nsIFrame* nextRow;
GetNextFrame(rowFrame, &nextRow);
contRowFrame->SetNextSibling(nextRow);
rowFrame->SetNextSibling(contRowFrame);
// Push the continuing row frame and the frames that follow
PushChildren(aPresContext, contRowFrame, rowFrame);
aStatus = NS_FRAME_NOT_COMPLETE;
} else {
// The row frame is complete. It may be the case that it's minimum
// height was greater than the available height we gave it
nsIFrame* nextRowFrame;
// Push the frame that follows
GetNextFrame(rowFrame, &nextRowFrame);
if (nextRowFrame) {
PushChildren(aPresContext, nextRowFrame, rowFrame);
}
aStatus = nextRowFrame ? NS_FRAME_NOT_COMPLETE : NS_FRAME_COMPLETE;
}
} else {
// See whether the row frame has cells that span into it
PRInt32 rowIndex = ((nsTableRowFrame*)rowFrame)->GetRowIndex();
PRInt32 colCount = aTableFrame->GetColCount();
nsTableCellFrame* prevCellFrame = nsnull;
for (PRInt32 colIndex = 0; colIndex < colCount; colIndex++) {
nsTableCellFrame* cellFrame = aTableFrame->GetCellInfoAt(rowIndex, colIndex);
NS_ASSERTION(cellFrame, "no cell frame");
// See if the cell frame is really in this row, or whether it's a
// row span from a previous row
PRInt32 realRowIndex;
cellFrame->GetRowIndex(realRowIndex);
if (realRowIndex == rowIndex) {
prevCellFrame = cellFrame;
} else {
// This cell frame spans into the row we're pushing, so we need to:
// - reflow the cell frame into the new smaller space
// - create a continuing frame for the cell frame (we do this regardless
// of whether it's complete)
// - add the continuing frame to the row frame we're pushing
nsIFrame* parentFrame;
nsPoint firstRowOrigin, lastRowOrigin;
nsReflowStatus status;
// Ask the cell frame's parent to reflow it to the height of all the
// rows it spans between its parent frame and the row we're pushing
cellFrame->GetParent(&parentFrame);
parentFrame->GetOrigin(firstRowOrigin);
rowFrame->GetOrigin(lastRowOrigin);
((nsTableRowFrame*)parentFrame)->ReflowCellFrame(aPresContext,
aReflowState, cellFrame, lastRowOrigin.y - firstRowOrigin.y, status);
// Create the continuing cell frame
nsIFrame* contCellFrame;
nsIPresShell* presShell;
nsIStyleSet* styleSet;
aPresContext->GetShell(&presShell);
presShell->GetStyleSet(&styleSet);
NS_RELEASE(presShell);
styleSet->CreateContinuingFrame(aPresContext, cellFrame, rowFrame, &contCellFrame);
NS_RELEASE(styleSet);
// Add it to the row's child list
((nsTableRowFrame*)rowFrame)->InsertCellFrame((nsTableCellFrame*)contCellFrame,
prevCellFrame);
prevCellFrame = (nsTableCellFrame*)contCellFrame;
}
}
// Push this row frame and those that follow to the next-in-flow
PushChildren(aPresContext, rowFrame, prevRowFrame);
aStatus = NS_FRAME_NOT_COMPLETE;
aDesiredSize.height = bounds.y;
}
break;
}
prevRowFrame = rowFrame;
}
return NS_OK;
}
/** Layout the entire row group.
* This method stacks rows vertically according to HTML 4.0 rules.
* Rows are responsible for layout of their children.
*/
NS_METHOD
nsTableRowGroupFrame::Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
if (nsDebugTable::gRflRowGrp) nsTableFrame::DebugReflow("TRG::Rfl", this, &aReflowState, nsnull);
nsresult rv=NS_OK;
// Initialize out parameter
if (nsnull != aDesiredSize.maxElementSize) {
aDesiredSize.maxElementSize->width = 0;
aDesiredSize.maxElementSize->height = 0;
}
nsTableFrame *tableFrame=nsnull;
rv = nsTableFrame::GetTableFrame(this, tableFrame);
if (NS_FAILED(rv))
return rv;
else if (tableFrame == nsnull)
return NS_ERROR_NULL_POINTER;
RowGroupReflowState state(aPresContext, aReflowState, tableFrame);
if (eReflowReason_Incremental == aReflowState.reason) {
rv = IncrementalReflow(aPresContext, aDesiredSize, state, aStatus);
} else {
aStatus = NS_FRAME_COMPLETE;
// Check for an overflow list
MoveOverflowToChildList(aPresContext);
// Reflow the existing frames. Before we do, pull-up any row frames from
// our next-in-flow.
// XXX It would be more efficient to do this if we have room left after
// reflowing the frames we have, the problem is we don't know if we have
// room left until after we call CalculateRowHeights()...
PullUpAllRowFrames(aPresContext);
rv = ReflowMappedChildren(aPresContext, aDesiredSize, state, aStatus,
nsnull, aReflowState.reason, PR_TRUE);
// Return our desired rect
aDesiredSize.width = aReflowState.availableWidth;
aDesiredSize.height = state.y;
// account for scroll bars. XXX needs optimization/caching
if (nsnull != aDesiredSize.maxElementSize) {
nsIAtom* pseudoTag;
mStyleContext->GetPseudoType(pseudoTag);
if (pseudoTag == nsLayoutAtoms::scrolledContentPseudo) {
nsIFrame* scrollFrame;
GetParent(&scrollFrame);
const nsStyleDisplay *display;
scrollFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)display));
if ((NS_STYLE_OVERFLOW_SCROLL == display->mOverflow) ||
(NS_STYLE_OVERFLOW_AUTO == display->mOverflow)) {
float sbWidth, sbHeight;
nsCOMPtr<nsIDeviceContext> dc;
aPresContext->GetDeviceContext(getter_AddRefs(dc));
dc->GetScrollBarDimensions(sbWidth, sbHeight);
aDesiredSize.maxElementSize->width += NSToCoordRound(sbWidth);
// If scrollbars are always visible then add in the hor sb height
if (NS_STYLE_OVERFLOW_SCROLL == display->mOverflow) {
aDesiredSize.maxElementSize->height += NSToCoordRound(sbHeight);
}
}
}
NS_IF_RELEASE(pseudoTag);
}
// shrink wrap rows to height of tallest cell in that row
if (eReflowReason_Initial != aReflowState.reason) {
CalculateRowHeights(aPresContext, aDesiredSize, aReflowState);
}
// See if all the frames fit
if (aDesiredSize.height > aReflowState.availableHeight &&
!tableFrame->RowGroupsShouldBeConstrained()) {
// Nope, find a place to split the row group
SplitRowGroup(aPresContext, aDesiredSize, aReflowState, tableFrame, aStatus);
}
}
// If we computed our max element element size, then cache it so we can return
// it later when asked
if (aDesiredSize.maxElementSize) {
mMaxElementSize = *aDesiredSize.maxElementSize;
}
if (nsDebugTable::gRflRowGrp) nsTableFrame::DebugReflow("TRG::Rfl ex", this, nsnull, &aDesiredSize);
return rv;
}
NS_METHOD nsTableRowGroupFrame::IncrementalReflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
RowGroupReflowState& aReflowState,
nsReflowStatus& aStatus)
{
nsresult rv = NS_OK;
// determine if this frame is the target or not
nsIFrame *target=nsnull;
rv = aReflowState.reflowState.reflowCommand->GetTarget(target);
if ((PR_TRUE==NS_SUCCEEDED(rv)) && (nsnull!=target))
{
if (this==target)
rv = IR_TargetIsMe(aPresContext, aDesiredSize, aReflowState, aStatus);
else
{
// Get the next frame in the reflow chain
nsIFrame* nextFrame;
aReflowState.reflowState.reflowCommand->GetNext(nextFrame);
rv = IR_TargetIsChild(aPresContext, aDesiredSize, aReflowState, aStatus, nextFrame);
}
}
return rv;
}
// Helper function. It marks the table frame as dirty and generates
// a reflow command
nsresult
nsTableRowGroupFrame::AddTableDirtyReflowCommand(nsIPresContext* aPresContext,
nsIPresShell& aPresShell,
nsIFrame* aTableFrame)
{
nsFrameState frameState;
nsIFrame* tableParentFrame;
nsIReflowCommand* reflowCmd;
nsresult rv;
// Mark the table frame as dirty
aTableFrame->GetFrameState(&frameState);
frameState |= NS_FRAME_IS_DIRTY;
aTableFrame->SetFrameState(frameState);
// Target the reflow comamnd at its parent frame
aTableFrame->GetParent(&tableParentFrame);
rv = NS_NewHTMLReflowCommand(&reflowCmd, tableParentFrame,
nsIReflowCommand::ReflowDirty);
if (NS_SUCCEEDED(rv)) {
// Add the reflow command
rv = aPresShell.AppendReflowCommand(reflowCmd);
NS_RELEASE(reflowCmd);
}
return rv;
}
#if 0
// Reflow the new frames. They're already marked dirty, so generate a reflow
// command that tells us to reflow our dirty child frames
nsIReflowCommand* reflowCmd;
if (NS_SUCCEEDED(NS_NewHTMLReflowCommand(&reflowCmd, this,
nsIReflowCommand::ReflowDirty))) {
aPresShell.AppendReflowCommand(reflowCmd);
NS_RELEASE(reflowCmd);
}
#endif
// this does not get called for trees
NS_IMETHODIMP
nsTableRowGroupFrame::AppendFrames(nsIPresContext* aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aFrameList)
{
// collect the new row frames in an array
nsVoidArray rows;
for (nsIFrame* rowFrame = aFrameList; rowFrame; rowFrame->GetNextSibling(&rowFrame)) {
nsIAtom* frameType;
rowFrame->GetFrameType(&frameType);
if (nsLayoutAtoms::tableRowFrame == frameType) {
rows.AppendElement(rowFrame);
}
NS_IF_RELEASE(frameType);
}
// Append the frames to the sibling chain
mFrames.AppendFrames(nsnull, aFrameList);
if (rows.Count() > 0) {
nsTableFrame* tableFrame = nsnull;
nsTableFrame::GetTableFrame(this, tableFrame);
if (tableFrame) {
tableFrame->AppendRows(*aPresContext, rows);
// Because the number of columns may have changed invalidate the column widths
tableFrame->InvalidateColumnWidths();
// Reflow the new frames. They're already marked dirty, so generate a reflow
// command that tells us to reflow our dirty child frames
nsIReflowCommand* reflowCmd;
if (NS_SUCCEEDED(NS_NewHTMLReflowCommand(&reflowCmd, this,
nsIReflowCommand::ReflowDirty))) {
aPresShell.AppendReflowCommand(reflowCmd);
NS_RELEASE(reflowCmd);
}
}
}
return NS_OK;
}
// this does not get called for trees
NS_IMETHODIMP
nsTableRowGroupFrame::InsertFrames(nsIPresContext* aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aPrevFrame,
nsIFrame* aFrameList)
{
// collect the new row frames in an array
nsVoidArray rows;
for (nsIFrame* rowFrame = aFrameList; rowFrame; rowFrame->GetNextSibling(&rowFrame)) {
nsIAtom* frameType;
rowFrame->GetFrameType(&frameType);
if (nsLayoutAtoms::tableRowFrame == frameType) {
rows.AppendElement(rowFrame);
}
NS_IF_RELEASE(frameType);
}
// Insert the frames in the sibling chain
mFrames.InsertFrames(nsnull, aPrevFrame, aFrameList);
if (rows.Count() > 0) {
nsTableFrame* tableFrame = nsnull;
nsTableFrame::GetTableFrame(this, tableFrame);
if (tableFrame) {
nsTableRowFrame* prevRow = (nsTableRowFrame *)nsTableFrame::GetFrameAtOrBefore(this, aPrevFrame, nsLayoutAtoms::tableRowFrame);
PRInt32 rowIndex = (prevRow) ? prevRow->GetRowIndex() : 0;
tableFrame->InsertRows(*aPresContext, rows, rowIndex, PR_TRUE);
// Reflow the new frames. They're already marked dirty, so generate a reflow
// command that tells us to reflow our dirty child frames
nsIReflowCommand* reflowCmd;
if (NS_SUCCEEDED(NS_NewHTMLReflowCommand(&reflowCmd, this,
nsIReflowCommand::ReflowDirty))) {
aPresShell.AppendReflowCommand(reflowCmd);
NS_RELEASE(reflowCmd);
}
// Because the number of columns may have changed invalidate the column widths
tableFrame->InvalidateColumnWidths();
// Generate a reflow command so we reflow the table itself. This will
// do a pass-1 reflow of all the rows including any rows we just added
AddTableDirtyReflowCommand(aPresContext, aPresShell, tableFrame);
}
}
return NS_OK;
}
// this does not get called for trees
NS_IMETHODIMP
nsTableRowGroupFrame::RemoveFrame(nsIPresContext* aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aOldFrame)
{
nsTableFrame* tableFrame = nsnull;
nsTableFrame::GetTableFrame(this, tableFrame);
if (tableFrame) {
nsIAtom* frameType;
aOldFrame->GetFrameType(&frameType);
if (nsLayoutAtoms::tableRowFrame == frameType) {
PRInt32 firstRowIndex = ((nsTableRowFrame *)aOldFrame)->GetRowIndex();
tableFrame->RemoveRows(*aPresContext, firstRowIndex, 1, PR_TRUE);
// Because the number of columns may have changed invalidate the column widths
tableFrame->InvalidateColumnWidths();
// Because we haven't added any new frames we don't need to do a pass1
// reflow. Just generate a reflow command so we reflow the table itself
AddTableDirtyReflowCommand(aPresContext, aPresShell, tableFrame);
}
NS_IF_RELEASE(frameType);
}
mFrames.DestroyFrame(aPresContext, aOldFrame);
return NS_OK;
}
NS_METHOD nsTableRowGroupFrame::IR_TargetIsMe(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
RowGroupReflowState& aReflowState,
nsReflowStatus& aStatus)
{
nsresult rv = NS_FRAME_COMPLETE;
nsIReflowCommand::ReflowType type;
aReflowState.reflowState.reflowCommand->GetType(type);
nsIFrame *objectFrame;
aReflowState.reflowState.reflowCommand->GetChildFrame(objectFrame);
const nsStyleDisplay *childDisplay=nsnull;
if (nsnull!=objectFrame)
objectFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
switch (type)
{
case nsIReflowCommand::ReflowDirty:
// Reflow the dirty child frames. Typically this is newly added frames.
// XXX What we really should do is do a pass-1 reflow of newly added
// frames (only if necessary, i.e., the table isn't fixed layout), then
// see if column widtsh changed and decide whether to do the pass-2 reflow
// of just the dirty rows or have the table rebalance column widths and
// do a pass-2 reflow of all rows
rv = ReflowMappedChildren(aPresContext, aDesiredSize, aReflowState, aStatus,
nsnull, aReflowState.reflowState.reason, PR_TRUE, PR_TRUE);
// If any column widths have to change due to this, rebalance column widths.
// XXX need to calculate this, but for now just do it
aReflowState.tableFrame->InvalidateColumnWidths();
break;
case nsIReflowCommand::StyleChanged :
rv = IR_StyleChanged(aPresContext, aDesiredSize, aReflowState, aStatus);
break;
case nsIReflowCommand::ContentChanged :
NS_ASSERTION(PR_FALSE, "illegal reflow type: ContentChanged");
rv = NS_ERROR_ILLEGAL_VALUE;
break;
default:
NS_NOTYETIMPLEMENTED("unexpected reflow command type");
rv = NS_ERROR_NOT_IMPLEMENTED;
break;
}
// XXX If we have a next-in-flow, then we're not complete
if (mNextInFlow) {
aStatus = NS_FRAME_NOT_COMPLETE;
}
return rv;
}
NS_METHOD nsTableRowGroupFrame::GetHeightOfRows(nscoord& aResult)
{
// the rows in rowGroupFrame need to be expanded by rowHeightDelta[i]
// and the rowgroup itself needs to be expanded by SUM(row height deltas)
nsIFrame * rowFrame=nsnull;
nsresult rv = FirstChild(nsnull, &rowFrame);
while ((NS_SUCCEEDED(rv)) && (nsnull!=rowFrame))
{
const nsStyleDisplay *rowDisplay;
rowFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)rowDisplay));
if (NS_STYLE_DISPLAY_TABLE_ROW == rowDisplay->mDisplay)
{
nsRect rowRect;
rowFrame->GetRect(rowRect);
aResult += rowRect.height;
}
else if (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == rowDisplay->mDisplay)
{
((nsTableRowGroupFrame*)rowFrame)->GetHeightOfRows(aResult);
}
GetNextFrame(rowFrame, &rowFrame);
}
return NS_OK;
}
// Recovers the reflow state to what it should be if aKidFrame is about
// to be reflowed. Restores the following:
// - availSize
// - y
// - firstRow
nsresult
nsTableRowGroupFrame::RecoverState(RowGroupReflowState& aReflowState,
nsIFrame* aKidFrame,
nsSize* aMaxElementSize)
{
// Walk the list of children looking for aKidFrame
for (nsIFrame* frame = mFrames.FirstChild(); frame; frame->GetNextSibling(&frame)) {
if (frame == aKidFrame) {
break;
}
// Update the running y-offset
nsSize kidSize;
frame->GetSize(kidSize);
aReflowState.y += kidSize.height;
// If our height is constrained then update the available height
if (PR_FALSE == aReflowState.unconstrainedHeight) {
aReflowState.availSize.height -= kidSize.height;
}
// Update the maximum element size
if (aMaxElementSize) {
// Get the row frame's cached max element size
nsSize kidMaxElementSize;
((nsTableRowFrame*)frame)->GetMaxElementSize(kidMaxElementSize);
if (aReflowState.firstRow) {
aMaxElementSize->width = kidMaxElementSize.width;
aMaxElementSize->height = kidMaxElementSize.height;
} else {
aMaxElementSize->width = PR_MAX(aMaxElementSize->width, kidMaxElementSize.width);
}
}
aReflowState.firstRow = PR_FALSE;
}
return NS_OK;
}
PRBool
nsTableRowGroupFrame::IsSimpleRowFrame(nsTableFrame* aTableFrame,
nsIFrame* aFrame)
{
// Make sure it's a row frame and not a row group frame
nsCOMPtr<nsIAtom> frameType;
aFrame->GetFrameType(getter_AddRefs(frameType));
if (frameType.get() == nsLayoutAtoms::tableRowFrame) {
PRInt32 rowIndex = ((nsTableRowFrame*)aFrame)->GetRowIndex();
// It's a simple row frame if there are no cells that span into or
// across the row
if (!aTableFrame->RowIsSpannedInto(rowIndex) &&
!aTableFrame->RowHasSpanningCells(rowIndex)) {
return PR_TRUE;
}
}
return PR_FALSE;
}
NS_METHOD nsTableRowGroupFrame::IR_TargetIsChild(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
RowGroupReflowState& aReflowState,
nsReflowStatus& aStatus,
nsIFrame * aNextFrame)
{
nsresult rv;
// Recover the state as if aNextFrame is about to be reflowed
RecoverState(aReflowState, aNextFrame, aDesiredSize.maxElementSize);
// Remember the old rect
nsRect oldKidRect;
aNextFrame->GetRect(oldKidRect);
// Pass along the reflow command
nsHTMLReflowState kidReflowState(aPresContext, aReflowState.reflowState,
aNextFrame, aReflowState.availSize);
nsSize kidMaxElementSize;
nsHTMLReflowMetrics desiredSize(aDesiredSize.maxElementSize ? &kidMaxElementSize : nsnull);
rv = ReflowChild(aNextFrame, aPresContext, desiredSize, kidReflowState,
0, aReflowState.y, 0, aStatus);
// Place the row frame
nsRect kidRect(0, aReflowState.y, desiredSize.width, desiredSize.height);
PlaceChild(aPresContext, aReflowState, aNextFrame, desiredSize, 0,
aReflowState.y, aDesiredSize.maxElementSize, kidMaxElementSize);
// See if the table needs a reflow (e.g., if the column widths have
// changed). If so, just return and don't bother adjusting the rows
// that follow
if (!aReflowState.tableFrame->NeedsReflow(aReflowState.reflowState)) {
// If the row has no cells that span into or across the row, then we
// don't have to call CalculateRowHeights() which is quite expensive
if (IsSimpleRowFrame(aReflowState.tableFrame, aNextFrame)) {
// XXX This optimization isn't ready to be enabled yet, because the
// row frame code needs to change to size the cell frame and vertically
// align it and either bitblt it into its new position or repaint
#if 0
// See if the row changed height
if (oldKidRect.height == desiredSize.height) {
// We don't need to do any painting. The row frame has made sure that
// the cell is properly positioned, and done any necessary repainting.
// Just calculate our desired height
nsIFrame* lastKidFrame = mFrames.LastChild();
nsRect lastKidRect;
lastKidFrame->GetRect(lastKidRect);
aDesiredSize.height = lastKidRect.YMost();
} else {
#endif
// Inform the row of its new height.
((nsTableRowFrame*)aNextFrame)->DidResize(aPresContext, aReflowState.reflowState);
// Because other cells in the row may need to be be aligned differently,
// repaint the entire row
// XXX Improve this so the row knows it should bitblt (or repaint) those
// cells that change position...
Invalidate(aPresContext, kidRect);
// Invalidate the area we're offseting. Note that we only repaint within
// our existing frame bounds.
// XXX It would be better to bitblt the row frames and not repaint,
// but we don't have such a view manager function yet...
if (kidRect.YMost() < mRect.height) {
nsRect dirtyRect(0, kidRect.YMost(),
mRect.width, mRect.height - kidRect.YMost());
Invalidate(aPresContext, dirtyRect);
}
// Adjust the frames that follow
AdjustSiblingsAfterReflow(aPresContext, aReflowState, aNextFrame,
aDesiredSize.maxElementSize,
desiredSize.height - oldKidRect.height);
aDesiredSize.height = aReflowState.y;
#if 0
}
#endif
} else {
// Adjust the frames that follow...
AdjustSiblingsAfterReflow(aPresContext, aReflowState, aNextFrame,
aDesiredSize.maxElementSize,
desiredSize.height - oldKidRect.height);
// Now recalculate the row heights
CalculateRowHeights(aPresContext, aDesiredSize, aReflowState.reflowState);
// Because we don't know what changed repaint everything.
// XXX We should change CalculateRowHeights() to return the bounding
// rect of what changed. Or whether anything moved or changed size...
nsRect dirtyRect(0, 0, mRect.width, mRect.height);
Invalidate(aPresContext, dirtyRect);
}
}
// Return our desired width
aDesiredSize.width = aReflowState.reflowState.availableWidth;
if (mNextInFlow) {
aStatus = NS_FRAME_NOT_COMPLETE;
}
return rv;
}
NS_METHOD nsTableRowGroupFrame::IR_StyleChanged(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
RowGroupReflowState& aReflowState,
nsReflowStatus& aStatus)
{
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
aReflowState.tableFrame->InvalidateFirstPassCache();
return rv;
}
NS_IMETHODIMP
nsTableRowGroupFrame::GetFrameType(nsIAtom** aType) const
{
NS_PRECONDITION(nsnull != aType, "null OUT parameter pointer");
*aType = nsLayoutAtoms::tableRowGroupFrame;
NS_ADDREF(*aType);
return NS_OK;
}
/* ----- global methods ----- */
nsresult
NS_NewTableRowGroupFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
{
NS_PRECONDITION(aNewFrame, "null OUT ptr");
if (nsnull == aNewFrame) {
return NS_ERROR_NULL_POINTER;
}
nsTableRowGroupFrame* it = new (aPresShell) nsTableRowGroupFrame;
if (nsnull == it) {
return NS_ERROR_OUT_OF_MEMORY;
}
*aNewFrame = it;
return NS_OK;
}
#ifdef DEBUG
NS_IMETHODIMP
nsTableRowGroupFrame::GetFrameName(nsString& aResult) const
{
return MakeFrameName("TableRowGroup", aResult);
}
NS_IMETHODIMP
nsTableRowGroupFrame::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
{
if (!aResult) {
return NS_ERROR_NULL_POINTER;
}
PRUint32 sum = sizeof(*this);
*aResult = sum;
return NS_OK;
}
#endif
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