9b5b8f9a1b
simplified BasicTableLayoutStrategy's CalculateTotals and CanAllocate better calculation of proportional cols calculation of adjusted widths due to colspans honors the fixed and pct widths of cols being spanned
1975 lines
75 KiB
C++
1975 lines
75 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "BasicTableLayoutStrategy.h"
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#include "nsIPresContext.h"
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#include "nsTableFrame.h"
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#include "nsTableColFrame.h"
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#include "nsTableCellFrame.h"
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#include "nsIStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsVoidArray.h"
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#include "nsHTMLIIDs.h"
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#if 1
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static PRBool gsDebugAssign = PR_FALSE;
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static PRBool gsDebugBalance = PR_FALSE;
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#else
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static PRBool gsDebugAssign = PR_TRUE;
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static PRBool gsDebugBalance = PR_TRUE;
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#endif
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static PRInt32 gsDebugCount = 0;
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// The priority of allocations for columns is as follows
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// 1) max(MIN, MIN_ADJ)
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// 2) max (PCT, PCT_ADJ)
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// 3) FIX
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// 4) FIX_ADJ
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// 5) PROportional
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// 6) max(DES_CON, DES_ADJ)
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// 7) for a fixed width table, the column may get more
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// space if the sum of the col allocations is insufficient
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// the logic here is kept in synch with that in CalculateTotals.
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PRBool CanAllocate(PRInt32 aType,
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PRInt32 aPrevType,
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nsTableColFrame* aColFrame)
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{
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switch(aType) {
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case PCT:
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case FIX:
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case DES_CON:
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case MIN_PRO:
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return (WIDTH_NOT_SET == aPrevType);
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case FIX_ADJ:
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return (WIDTH_NOT_SET == aPrevType) || (FIX == aPrevType);
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default:
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NS_ASSERTION(PR_FALSE, "invalid call");
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}
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return PR_FALSE;
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}
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/* ---------- BasicTableLayoutStrategy ---------- */
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MOZ_DECL_CTOR_COUNTER(BasicTableLayoutStrategy);
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BasicTableLayoutStrategy::BasicTableLayoutStrategy(nsTableFrame *aFrame, PRBool aIsNavQuirks)
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{
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MOZ_COUNT_CTOR(BasicTableLayoutStrategy);
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NS_ASSERTION(nsnull != aFrame, "bad frame arg");
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mTableFrame = aFrame;
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mCellSpacingTotal = 0;
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mIsNavQuirksMode = aIsNavQuirks;
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}
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BasicTableLayoutStrategy::~BasicTableLayoutStrategy()
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{
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MOZ_COUNT_DTOR(BasicTableLayoutStrategy);
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}
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PRBool BasicTableLayoutStrategy::Initialize(nsIPresContext* aPresContext,
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nsSize* aMaxElementSize,
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nscoord aMaxWidth,
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const nsHTMLReflowState& aReflowState)
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{
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ContinuingFrameCheck();
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PRBool result = PR_TRUE;
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// re-init instance variables
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mCellSpacingTotal = 0;
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mCols = mTableFrame->GetEffectiveCOLSAttribute();
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// assign the width of all fixed-width columns
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float p2t;
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aPresContext->GetScaledPixelsToTwips(&p2t);
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AssignNonPctColumnWidths(aPresContext, aMaxWidth, aReflowState, p2t);
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// set aMaxElementSize here because we compute mMinTableWidth in AssignNonPctColumnWidths
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if (nsnull != aMaxElementSize) {
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SetMaxElementSize(aMaxElementSize, aReflowState.mComputedPadding);
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}
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return result;
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}
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void
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BasicTableLayoutStrategy::SetMaxElementSize(nsSize* aMaxElementSize,
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const nsMargin& aPadding)
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{
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if (nsnull != aMaxElementSize) {
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aMaxElementSize->height = 0;
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nsMargin borderPadding;
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const nsStylePosition* tablePosition;
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mTableFrame->GetStyleData(eStyleStruct_Position, ((const nsStyleStruct *&)tablePosition));
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mTableFrame->GetTableBorder(borderPadding);
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borderPadding += aPadding;
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nscoord horBorderPadding = borderPadding.left + borderPadding.right;
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nscoord minTableWidth = GetTableMinWidth();
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if (tablePosition->mWidth.GetUnit() == eStyleUnit_Coord) {
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aMaxElementSize->width = tablePosition->mWidth.GetCoordValue();
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if (minTableWidth + horBorderPadding > aMaxElementSize->width) {
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aMaxElementSize->width = minTableWidth + horBorderPadding;
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}
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}
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else {
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aMaxElementSize->width = minTableWidth + horBorderPadding;
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}
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}
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}
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void BasicTableLayoutStrategy::ContinuingFrameCheck()
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{
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#ifdef NS_DEBUG
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nsIFrame* tablePIF = nsnull;
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mTableFrame->GetPrevInFlow(&tablePIF);
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NS_ASSERTION(!tablePIF, "never ever call me on a continuing frame!");
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#endif
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}
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PRBool BCW_Wrapup(nsIPresContext* aPresContext,
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BasicTableLayoutStrategy* aStrategy,
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nsTableFrame* aTableFrame,
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PRInt32* aAllocTypes)
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{
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if (aAllocTypes)
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delete [] aAllocTypes;
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if (gsDebugBalance) {printf("BalanceColumnWidths ex \n"); aTableFrame->Dump(aPresContext, PR_FALSE, PR_TRUE, PR_FALSE);}
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return PR_TRUE;
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}
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void
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ResetPctValues(nsTableFrame* aTableFrame,
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PRInt32 aNumCols)
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{
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// initialize the col percent and cell percent values to 0.
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PRInt32 colX;
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for (colX = 0; colX < aNumCols; colX++) {
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nsTableColFrame* colFrame = aTableFrame->GetColFrame(colX);
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if (colFrame) {
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colFrame->SetWidth(PCT, WIDTH_NOT_SET);
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colFrame->SetWidth(PCT_ADJ, WIDTH_NOT_SET);
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}
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}
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}
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PRBool
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BasicTableLayoutStrategy::BalanceColumnWidths(nsIPresContext* aPresContext,
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nsIStyleContext* aTableStyle,
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const nsHTMLReflowState& aReflowState,
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nscoord aMaxWidthIn)
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{
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if (gsDebugBalance) {printf("BalanceColumnWidths en max=%d count=%d \n", aMaxWidthIn, gsDebugCount++); mTableFrame->Dump(aPresContext, PR_FALSE, PR_TRUE, PR_FALSE);}
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float p2t;
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aPresContext->GetScaledPixelsToTwips(&p2t);
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ContinuingFrameCheck();
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if (!aTableStyle) {
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NS_ASSERTION(aTableStyle, "bad style arg");
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return PR_FALSE;
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}
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PRInt32 numCols = mTableFrame->GetEffectiveColCount();
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// determine if the table is auto/fixed and get the fixed width if available
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nscoord maxWidth = aMaxWidthIn;
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nscoord specifiedTableWidth = mTableFrame->CalcBorderBoxWidth(aReflowState);
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PRBool tableIsAutoWidth = mTableFrame->IsAutoWidth();
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// a specifiedTableWidth of <= 0 indicates percentage based
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if (!tableIsAutoWidth && (specifiedTableWidth > 0)) {
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maxWidth = PR_MIN(specifiedTableWidth, aMaxWidthIn); // specifiedWidth usually == aMaxWidthIn for fixed table
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}
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// reduce the maxWidth by border and padding, since we will be dealing with content width
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// XXX should this be done in aMaxWidthIn by the caller?
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if (maxWidth != NS_UNCONSTRAINEDSIZE) {
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maxWidth -= aReflowState.mComputedBorderPadding.left +
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aReflowState.mComputedBorderPadding.right;
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maxWidth = PR_MAX(0, maxWidth);
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}
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// initialize the col percent and cell percent values to 0.
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ResetPctValues(mTableFrame, numCols);
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// set PCT and PCT_ADJ widths on col frames. An auto table returns
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// a new table width based on percent cells/cols if they exist
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nscoord perAdjTableWidth = 0;
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if ((NS_UNCONSTRAINEDSIZE != maxWidth) || (tableIsAutoWidth)) {
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// for an auto width table, use a large basis just so that the quirky
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// auto table sizing will get as big as it should
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nscoord basis = (NS_UNCONSTRAINEDSIZE == maxWidth)
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? NS_UNCONSTRAINEDSIZE : maxWidth - mCellSpacingTotal;
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// this may have to reallocate MIN_ADJ, FIX_ADJ, DES_ADJ if there are
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// cells spanning cols which have PCT values
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perAdjTableWidth = AssignPctColumnWidths(aReflowState, basis, tableIsAutoWidth, p2t);
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}
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// set the table's columns to the min width
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PRInt32 colX;
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for (colX = 0; colX < numCols; colX++) {
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nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
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if (!colFrame) continue;
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nscoord colMinWidth = colFrame->GetMinWidth();
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mTableFrame->SetColumnWidth(colX, colMinWidth);
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}
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// if the max width available is less than the min content width for fixed table, we're done
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nscoord minTableWidth = GetTableMinWidth();
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if (!tableIsAutoWidth && (maxWidth < minTableWidth)) {
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return BCW_Wrapup(aPresContext, this, mTableFrame, nsnull);
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}
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// if the max width available is less than the min content width for auto table
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// that had no % cells/cols, we're done
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if (tableIsAutoWidth && (maxWidth < minTableWidth) && (0 == perAdjTableWidth)) {
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return BCW_Wrapup(aPresContext, this, mTableFrame, nsnull);
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}
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PRInt32 cellSpacingTotal;
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// the following are of size NUM_WIDTHS, but only MIN_CON, DES_CON, FIX, FIX_ADJ, PCT
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// are used and they account for colspan ADJusted values
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PRInt32 totalWidths[NUM_WIDTHS]; // sum of col widths of a particular type
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PRInt32 totalCounts[NUM_WIDTHS]; // num of cols of a particular type
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PRInt32 dupedWidths[NUM_WIDTHS];
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PRInt32 num0Proportional;
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CalculateTotals(cellSpacingTotal, totalCounts, totalWidths, dupedWidths, num0Proportional);
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// auto width table's adjusted width needs cell spacing
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if (tableIsAutoWidth && perAdjTableWidth > 0) {
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perAdjTableWidth = PR_MIN(perAdjTableWidth + cellSpacingTotal, maxWidth);
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maxWidth = perAdjTableWidth;
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}
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nscoord totalAllocated = totalWidths[MIN_CON] + cellSpacingTotal;
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// allocate and initialize arrays indicating what col gets set
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PRInt32* allocTypes = new PRInt32[numCols];
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if (!allocTypes) return PR_FALSE;
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for (colX = 0; colX < numCols; colX++) {
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allocTypes[colX] = -1;
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}
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// allocate PCT/PCT_ADJ cols
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if (totalCounts[PCT] > 0) {
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if (totalAllocated + totalWidths[PCT] - dupedWidths[PCT] <= maxWidth) {
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AllocateFully(totalAllocated, allocTypes, PCT);
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//NS_WARN_IF_FALSE(totalAllocated <= maxWidth, "over allocated");
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}
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else {
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AllocateConstrained(maxWidth - totalAllocated, PCT, PR_FALSE, allocTypes, p2t);
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return BCW_Wrapup(aPresContext, this, mTableFrame, allocTypes);
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}
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}
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// allocate FIX cols
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if ((totalAllocated < maxWidth) && (totalCounts[FIX] > 0)) {
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if (totalAllocated + totalWidths[FIX] - dupedWidths[FIX] <= maxWidth) {
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AllocateFully(totalAllocated, allocTypes, FIX);
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//NS_WARN_IF_FALSE(totalAllocated <= maxWidth, "over allocated");
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}
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else {
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AllocateConstrained(maxWidth - totalAllocated, FIX, PR_TRUE, allocTypes, p2t);
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return BCW_Wrapup(aPresContext, this, mTableFrame, allocTypes);
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}
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}
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// allocate fixed adjusted cols
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if ((totalAllocated < maxWidth) && (totalCounts[FIX_ADJ] > 0)) {
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if (totalAllocated + totalWidths[FIX_ADJ] - dupedWidths[FIX_ADJ] <= maxWidth) {
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AllocateFully(totalAllocated, allocTypes, FIX_ADJ);
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//NS_WARN_IF_FALSE(totalAllocated <= maxWidth, "over allocated");
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}
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else {
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AllocateConstrained(maxWidth - totalAllocated, FIX_ADJ, PR_TRUE, allocTypes, p2t);
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return BCW_Wrapup(aPresContext, this, mTableFrame, allocTypes);
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}
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}
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// allocate proportional cols up to their min proportional value
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if ((totalAllocated < maxWidth) && (totalCounts[MIN_PRO] > 0)) {
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if (totalAllocated + totalWidths[MIN_PRO] - dupedWidths[MIN_PRO] <= maxWidth) {
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AllocateFully(totalAllocated, allocTypes, MIN_PRO);
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//NS_WARN_IF_FALSE(totalAllocated <= maxWidth, "over allocated");
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}
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else {
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AllocateConstrained(maxWidth - totalAllocated, MIN_PRO, PR_FALSE, allocTypes, p2t);
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return BCW_Wrapup(aPresContext, this, mTableFrame, allocTypes);
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}
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}
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// allocate auto cols
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if ((totalAllocated < maxWidth) && (totalCounts[DES_CON] > 0)) {
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if (totalAllocated + totalWidths[DES_CON] - dupedWidths[DES_CON]<= maxWidth) {
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AllocateFully(totalAllocated, allocTypes, DES_CON);
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//NS_WARN_IF_FALSE(totalAllocated <= maxWidth, "over allocated");
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}
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else {
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AllocateConstrained(maxWidth - totalAllocated, DES_CON, PR_TRUE, allocTypes, p2t);
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return BCW_Wrapup(aPresContext, this, mTableFrame, allocTypes);
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}
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}
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// if this is a nested non auto table and pass1 reflow, we are done
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if ((maxWidth == NS_UNCONSTRAINEDSIZE) && (!tableIsAutoWidth)) {
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return BCW_Wrapup(aPresContext, this, mTableFrame, allocTypes);
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}
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// allocate the rest to auto columns, with some exceptions
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if ( (tableIsAutoWidth && (perAdjTableWidth - totalAllocated > 0)) ||
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(!tableIsAutoWidth && (totalAllocated < maxWidth)) ) {
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PRBool excludePct = (totalCounts[PCT] != numCols);
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PRBool excludeFix = (totalCounts[PCT] + totalCounts[FIX] < numCols);
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PRBool excludePro = (totalCounts[DES_CON] > 0);
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PRBool exclude0Pro = (totalCounts[MIN_PRO] != num0Proportional);
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if (tableIsAutoWidth) {
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AllocateUnconstrained(perAdjTableWidth - totalAllocated, allocTypes, excludePct,
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excludeFix, excludePro, exclude0Pro, p2t);
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}
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else {
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AllocateUnconstrained(maxWidth - totalAllocated, allocTypes, excludePct,
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excludeFix, excludePro, exclude0Pro, p2t);
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}
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}
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return BCW_Wrapup(aPresContext, this, mTableFrame, allocTypes);
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}
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nscoord GetColWidth(nsTableColFrame* aColFrame,
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PRInt32 aWidthType)
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{
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switch(aWidthType) {
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case DES_CON:
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return aColFrame->GetDesWidth();
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case FIX:
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case FIX_ADJ:
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return aColFrame->GetWidth(aWidthType);
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case PCT:
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return aColFrame->GetPctWidth();
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case MIN_PRO:
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return aColFrame->GetWidth(aWidthType);
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default:
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NS_ASSERTION(PR_FALSE, "invalid call");
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return WIDTH_NOT_SET;
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}
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}
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// Allocate aWidthType values to all cols available in aIsAllocated
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void BasicTableLayoutStrategy::AllocateFully(nscoord& aTotalAllocated,
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PRInt32* aAllocTypes,
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PRInt32 aWidthType)
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{
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PRInt32 numCols = mTableFrame->GetEffectiveColCount();
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for (PRInt32 colX = 0; colX < numCols; colX++) {
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nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
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if (!colFrame) continue;
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if (!CanAllocate(aWidthType, aAllocTypes[colX], colFrame)) {
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continue;
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}
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nscoord oldWidth = mTableFrame->GetColumnWidth(colX);
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nscoord newWidth = GetColWidth(colFrame, aWidthType);
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if (WIDTH_NOT_SET == newWidth) continue;
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if (newWidth > oldWidth) {
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mTableFrame->SetColumnWidth(colX, newWidth);
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aTotalAllocated += newWidth - oldWidth;
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}
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aAllocTypes[colX] = aWidthType;
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}
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}
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// This method is the last allocation method to get called, but just in case
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// code gets added later after, set the allocated cols to some final value.
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#define FINISHED 99
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void BasicTableLayoutStrategy::AllocateUnconstrained(PRInt32 aAllocAmount,
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PRInt32* aAllocTypes,
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PRBool aExcludePct,
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PRBool aExcludeFix,
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PRBool aExcludePro,
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PRBool aExclude0Pro,
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float aPixelToTwips)
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{
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// set up allocTypes to exclude anything but auto cols if possible
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PRInt32 colX;
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PRInt32 numCols = mTableFrame->GetEffectiveColCount();
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for (colX = 0; colX < numCols; colX++) {
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if (aExcludePct && (PCT == aAllocTypes[colX])) {
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aAllocTypes[colX] = FINISHED;
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}
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else if (aExcludeFix && ((FIX == aAllocTypes[colX]) || (FIX_ADJ == aAllocTypes[colX]))) {
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aAllocTypes[colX] = FINISHED;
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}
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else if (MIN_PRO == aAllocTypes[colX]) {
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if (aExcludePro) {
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aAllocTypes[colX] = FINISHED;
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}
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else {
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if (aExclude0Pro) {
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nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
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if (colFrame->GetConstraint() == e0ProportionConstraint) {
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aAllocTypes[colX] = FINISHED;
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}
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}
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}
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}
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}
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nscoord divisor = 0;
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PRInt32 numColsAllocated = 0;
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PRInt32 totalAllocated = 0;
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for (colX = 0; colX < numCols; colX++) {
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nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
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PRBool skipColumn = aExclude0Pro && (e0ProportionConstraint == colFrame->GetConstraint());
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if (FINISHED != aAllocTypes[colX] && !skipColumn ) {
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divisor += mTableFrame->GetColumnWidth(colX);
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numColsAllocated++;
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}
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}
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for (colX = 0; colX < numCols; colX++) {
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if (FINISHED != aAllocTypes[colX]) {
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if (aExclude0Pro) {
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nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
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if (colFrame && (e0ProportionConstraint == colFrame->GetConstraint())) {
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continue;
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}
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}
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nscoord oldWidth = mTableFrame->GetColumnWidth(colX);
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float percent = (divisor == 0)
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? (1.0f / ((float)numColsAllocated))
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: ((float)oldWidth) / ((float)divisor);
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nscoord addition = nsTableFrame::RoundToPixel(NSToCoordRound(((float)aAllocAmount) * percent), aPixelToTwips);
|
|
if (addition > (aAllocAmount - totalAllocated)) {
|
|
mTableFrame->SetColumnWidth(colX, oldWidth + (aAllocAmount - totalAllocated));
|
|
break;
|
|
}
|
|
mTableFrame->SetColumnWidth(colX, oldWidth + addition);
|
|
totalAllocated += addition;
|
|
}
|
|
}
|
|
}
|
|
|
|
nscoord GetConstrainedWidth(nsTableColFrame* colFrame,
|
|
PRBool aConsiderPct)
|
|
|
|
{
|
|
nscoord conWidth = WIDTH_NOT_SET;
|
|
if (aConsiderPct) {
|
|
conWidth = colFrame->GetPctWidth();
|
|
}
|
|
if (conWidth <= 0 ) {
|
|
conWidth = colFrame->GetFixWidth();
|
|
}
|
|
return conWidth;
|
|
}
|
|
|
|
#define LIMIT_PCT 0 // retrict allocations to only the pct width cols
|
|
#define LIMIT_FIX 1 // retrict allocations to only the fix width cols
|
|
#define LIMIT_DES 2 // retrict allocations to only the auto width cols
|
|
#define LIMIT_NONE 3 // retrict allocations to only the auto widths unless there are none
|
|
// and then restrict fix or pct.
|
|
|
|
void
|
|
BasicTableLayoutStrategy::ComputeNonPctColspanWidths(const nsHTMLReflowState& aReflowState,
|
|
PRBool aConsiderPct,
|
|
float aPixelToTwips)
|
|
{
|
|
PRInt32 numCols = mTableFrame->GetEffectiveColCount();
|
|
// zero out prior ADJ values
|
|
|
|
PRInt32 colX;
|
|
for (colX = numCols - 1; colX >= 0; colX--) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
if (!colFrame) continue;
|
|
colFrame->SetWidth(MIN_ADJ, WIDTH_NOT_SET);
|
|
colFrame->SetWidth(FIX_ADJ, WIDTH_NOT_SET);
|
|
colFrame->SetWidth(DES_ADJ, WIDTH_NOT_SET);
|
|
}
|
|
|
|
// For each col, consider the cells originating in it with colspans > 1.
|
|
// Adjust the cols that each cell spans if necessary. Iterate backwards
|
|
// so that nested and/or overlaping col spans handle the inner ones first,
|
|
// ensuring more accurated calculations.
|
|
PRInt32 numRows = mTableFrame->GetRowCount();
|
|
for (colX = numCols - 1; colX >= 0; colX--) {
|
|
for (PRInt32 rowX = 0; rowX < numRows; rowX++) {
|
|
PRBool originates;
|
|
PRInt32 colSpan;
|
|
nsTableCellFrame* cellFrame = mTableFrame->GetCellInfoAt(rowX, colX, &originates, &colSpan);
|
|
if (!originates || (1 == colSpan)) {
|
|
continue;
|
|
}
|
|
// set MIN_ADJ, DES_ADJ, FIX_ADJ
|
|
for (PRInt32 widthX = 0; widthX < NUM_MAJOR_WIDTHS; widthX++) {
|
|
nscoord cellWidth = 0;
|
|
if (MIN_CON == widthX) {
|
|
cellWidth = cellFrame->GetPass1MaxElementSize().width;
|
|
}
|
|
else if (DES_CON == widthX) {
|
|
cellWidth = cellFrame->GetMaximumWidth();
|
|
}
|
|
else { // FIX width
|
|
// see if the cell has a style width specified
|
|
const nsStylePosition* cellPosition;
|
|
cellFrame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct *&)cellPosition);
|
|
if (eStyleUnit_Coord == cellPosition->mWidth.GetUnit()) {
|
|
// need to add padding into fixed width
|
|
nsMargin padding = nsTableFrame::GetPadding(nsSize(aReflowState.mComputedWidth, 0), cellFrame);
|
|
cellWidth = cellPosition->mWidth.GetCoordValue() + padding.left + padding.right;
|
|
cellWidth = PR_MAX(cellWidth, cellFrame->GetPass1MaxElementSize().width);
|
|
}
|
|
}
|
|
|
|
if (0 >= cellWidth) continue;
|
|
|
|
// first allocate pct cells up to their value if aConsiderPct, then
|
|
// allocate fixed cells up to their value, then allocate auto cells
|
|
// up to their value, then allocate auto cells proportionally.
|
|
PRInt32 limit = (aConsiderPct) ? LIMIT_PCT : LIMIT_FIX;
|
|
if (MIN_CON != widthX) { // FIX and DES only need to allocate NONE
|
|
limit = LIMIT_NONE;
|
|
}
|
|
while (limit <= LIMIT_NONE) {
|
|
if (ComputeNonPctColspanWidths(widthX, cellFrame, cellWidth, colX, colSpan,
|
|
limit, aPixelToTwips)) {
|
|
break;
|
|
}
|
|
limit++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
static char* widths[] = {"MIN", "DES", "FIX"};
|
|
static char* limits[] = {"PCT", "FIX", "DES", "NONE"};
|
|
static PRInt32 dumpCount = 0;
|
|
void DumpColWidths(nsTableFrame& aTableFrame,
|
|
char* aMessage,
|
|
nsTableCellFrame* aCellFrame,
|
|
PRInt32 aColIndex,
|
|
PRInt32 aWidthType,
|
|
PRInt32 aLimitType)
|
|
{
|
|
PRInt32 rowIndex;
|
|
aCellFrame->GetRowIndex(rowIndex);
|
|
printf ("%s (row,col)=(%d,%d) width=%s limit=%s count=%d\n", aMessage, rowIndex, aColIndex,
|
|
widths[aWidthType], limits[aLimitType], dumpCount++);
|
|
for (PRInt32 i = 0; i < aTableFrame.GetEffectiveColCount(); i++) {
|
|
printf(" col %d = ", i);
|
|
nsTableColFrame* colFrame = aTableFrame.GetColFrame(i);
|
|
for (PRInt32 j = 0; j < NUM_WIDTHS; j++) {
|
|
printf("%d ", colFrame->GetWidth(j));
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// (aWidthIndex == MIN_CON) is called with:
|
|
// (aLimitType == LIMIT_PCT) to give MIN_ADJ to PCT cols (up to their PCT value)
|
|
// (aLimitType == LIMIT_FIX) to give MIN_ADJ to FIX cols (up to their FIX value)
|
|
// (aLimitType == LIMIT_DES) to give MIN_ADJ to auto cols (up to their preferred value)
|
|
// (aLimitType == LIMIT_NONE) to give MIN_ADJ to auto cols
|
|
// (aWidthIndex == FIX), (aWidthIndex == DES) is called with:
|
|
// (aLimitType == LIMIT_NONE) to give FIX_ADJ to auto cols
|
|
PRBool
|
|
BasicTableLayoutStrategy::ComputeNonPctColspanWidths(PRInt32 aWidthIndex,
|
|
nsTableCellFrame* aCellFrame,
|
|
nscoord aCellWidth,
|
|
PRInt32 aColIndex,
|
|
PRInt32 aColSpan,
|
|
PRInt32& aLimitType,
|
|
float aPixelToTwips)
|
|
{
|
|
//DumpColWidths(*mTableFrame, "enter ComputeNonPctColspanWidths", aCellFrame, aColIndex, aWidthIndex, aLimitType);
|
|
PRBool result = PR_TRUE;
|
|
|
|
nscoord spanCellSpacing = 0; // total cell spacing cells being spanned
|
|
nscoord minTotal = 0; // the sum of min widths of spanned cells.
|
|
nscoord autoMinTotal = 0; // the sum of min widths of spanned auto cells.
|
|
nscoord fixMinTotal = 0; // the sum of min widths of spanned fix cells.
|
|
nscoord pctMinTotal = 0; // the sum of min widths of spanned pct cells.
|
|
nscoord pctTotal = 0; // the sum of pct widths of spanned cells.
|
|
nscoord fixTotal = 0; // the sum of fix widths of spanned cells
|
|
nscoord autoDesTotal = 0; // the sum of desired widths of spanned cells which are auto
|
|
nscoord pctLimitTotal = 0; // the sum of pct widths not exceeding aCellWidth
|
|
nscoord fixLimitTotal = 0; // the sum of fix widths not exceeding aCellWidth
|
|
nscoord desLimitTotal = 0; // the sum of des widths not exceeding aCellWidth
|
|
PRInt32 numAutoCols = 0;
|
|
|
|
nscoord spacingX = mTableFrame->GetCellSpacingX();
|
|
// accumulate the various divisors to be used later
|
|
for (PRInt32 spanX = 0; spanX < aColSpan; spanX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(aColIndex + spanX);
|
|
if (!colFrame) continue;
|
|
nscoord minWidth = PR_MAX(colFrame->GetMinWidth(), 0);
|
|
nscoord pctWidth = PR_MAX(colFrame->GetPctWidth(), 0);
|
|
nscoord fixWidth = PR_MAX(colFrame->GetFixWidth(), 0);
|
|
nscoord desWidth = PR_MAX(colFrame->GetDesWidth(), minWidth);
|
|
|
|
minTotal += minWidth;
|
|
|
|
if (pctWidth > 0) {
|
|
pctTotal += pctWidth;
|
|
pctMinTotal += minWidth;
|
|
}
|
|
else if (fixWidth > 0) {
|
|
fixTotal += fixWidth;
|
|
fixMinTotal += minWidth;
|
|
}
|
|
if (colFrame->GetWidth(PCT) + colFrame->GetWidth(FIX) <= 0) {
|
|
autoDesTotal += desWidth;
|
|
autoMinTotal += minWidth;
|
|
numAutoCols++;
|
|
}
|
|
if ((spanX > 0) && (mTableFrame->GetNumCellsOriginatingInCol(aColIndex + spanX) > 0)) {
|
|
spanCellSpacing += spacingX;
|
|
}
|
|
}
|
|
nscoord availWidth = aCellWidth - spanCellSpacing;
|
|
if (MIN_CON == aWidthIndex) {
|
|
// MIN widths (unlike the others) are added to existing values, so subtract out the min total
|
|
availWidth -= minTotal;
|
|
|
|
pctLimitTotal = ((pctTotal - pctMinTotal) < availWidth) ? pctTotal - pctMinTotal : availWidth;
|
|
fixLimitTotal = ((fixTotal - fixMinTotal) < availWidth) ? fixTotal - fixMinTotal : availWidth;
|
|
desLimitTotal = ((autoDesTotal - autoMinTotal) < availWidth) ? autoDesTotal - autoMinTotal : availWidth;
|
|
}
|
|
else {
|
|
if (autoDesTotal > 0) {
|
|
availWidth -= pctTotal + fixTotal; // the pct and fix cols already reached their values
|
|
}
|
|
else if (fixTotal > 0) {
|
|
availWidth -= pctTotal; // the pct already reached their values
|
|
}
|
|
}
|
|
|
|
// Below are some optimizations which can skip steps.
|
|
if (LIMIT_PCT == aLimitType) {
|
|
NS_ASSERTION(MIN_CON == aWidthIndex, "invalid call to ComputeNonPctColspanWidths");
|
|
// if there are no pct cols, limit fix cols
|
|
if (0 == pctTotal) {
|
|
aLimitType = LIMIT_FIX;
|
|
}
|
|
}
|
|
if (LIMIT_FIX == aLimitType) {
|
|
NS_ASSERTION(MIN_CON == aWidthIndex, "invalid call to ComputeNonPctColspanWidths");
|
|
// if there are no fix cols, limit des
|
|
if (0 == fixTotal) {
|
|
aLimitType = LIMIT_DES;
|
|
}
|
|
}
|
|
if (LIMIT_DES == aLimitType) {
|
|
NS_ASSERTION(MIN_CON == aWidthIndex, "invalid call to ComputeNonPctColspanWidths");
|
|
// if there are no auto cols, limit none
|
|
if (0 == autoDesTotal) {
|
|
aLimitType = LIMIT_NONE;
|
|
}
|
|
}
|
|
|
|
// there are some cases where allocating up to aCellWidth will not be satisfied
|
|
switch (aLimitType) {
|
|
case LIMIT_PCT:
|
|
if (pctLimitTotal < availWidth) {
|
|
// the pct cols won't satisfy the request alone
|
|
availWidth = pctLimitTotal;
|
|
result = PR_FALSE;
|
|
}
|
|
break;
|
|
case LIMIT_FIX:
|
|
if (fixLimitTotal < availWidth) {
|
|
// the fix cols won't satisfy the request alone
|
|
availWidth = fixLimitTotal;
|
|
result = PR_FALSE;
|
|
}
|
|
break;
|
|
case LIMIT_DES:
|
|
if (desLimitTotal < availWidth) {
|
|
// the auto cols won't satisfy the request alone
|
|
availWidth = desLimitTotal;
|
|
result = PR_FALSE;
|
|
}
|
|
break;
|
|
default: // LIMIT_NONE
|
|
break;
|
|
}
|
|
|
|
if (availWidth > 0) {
|
|
// get the correct numerator in a similar fashion to getting the divisor
|
|
for (spanX = 0; spanX < aColSpan; spanX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(aColIndex + spanX);
|
|
if (!colFrame) continue;
|
|
nscoord minWidth = colFrame->GetMinWidth();
|
|
nscoord pctWidth = PR_MAX(colFrame->GetPctWidth(), 0);
|
|
nscoord fixWidth = PR_MAX(colFrame->GetFixWidth(), 0);
|
|
nscoord desWidth = PR_MAX(colFrame->GetDesWidth(), minWidth);
|
|
|
|
nscoord colWidth = PR_MAX(colFrame->GetWidth(aWidthIndex),
|
|
colFrame->GetWidth(aWidthIndex + NUM_MAJOR_WIDTHS));
|
|
colWidth = PR_MAX(colWidth, minWidth);
|
|
|
|
nscoord numeratorMin = 0;
|
|
nscoord numeratorPct = 0;
|
|
nscoord numeratorFix = 0;
|
|
nscoord numeratorAutoDes = 0;
|
|
|
|
if (pctWidth > 0) {
|
|
numeratorPct = pctWidth;
|
|
}
|
|
else if (fixWidth > 0) {
|
|
numeratorFix = fixWidth;
|
|
}
|
|
if (colFrame->GetWidth(PCT) + colFrame->GetWidth(FIX) <= 0) {
|
|
numeratorAutoDes = desWidth;
|
|
}
|
|
|
|
nscoord divisor;
|
|
nscoord numerator;
|
|
|
|
// let pct cols reach their target
|
|
if (LIMIT_PCT == aLimitType) {
|
|
if (pctLimitTotal > 0) {
|
|
divisor = pctTotal - pctMinTotal;
|
|
numerator = numeratorPct - minWidth;
|
|
}
|
|
}
|
|
// let fix cols reach their target
|
|
else if (LIMIT_FIX == aLimitType) {
|
|
if (fixLimitTotal > 0) {
|
|
divisor = fixTotal - fixMinTotal;
|
|
numerator = numeratorFix - minWidth;
|
|
}
|
|
}
|
|
// let auto cols reach their target
|
|
else if (LIMIT_DES == aLimitType) {
|
|
if (desLimitTotal > 0) {
|
|
if (autoDesTotal > 0) { // there were auto cols
|
|
divisor = autoDesTotal - autoMinTotal;
|
|
numerator = numeratorAutoDes - minWidth;
|
|
}
|
|
else if (fixTotal > 0) { // there were fix cols but no auto
|
|
divisor = fixTotal - fixMinTotal;
|
|
numerator = numeratorFix - minWidth;
|
|
}
|
|
else if (pctTotal > 0) { // there were only pct cols
|
|
divisor = pctTotal - pctMinTotal;
|
|
numerator = numeratorPct - minWidth;
|
|
}
|
|
else continue;
|
|
}
|
|
}
|
|
else if (LIMIT_NONE == aLimitType) {
|
|
if ((MIN_CON == aWidthIndex) && (0 == minTotal)) {
|
|
// put everything in the first col
|
|
if (0 == spanX) {
|
|
divisor = 1;
|
|
numerator = 1;
|
|
}
|
|
else continue;
|
|
}
|
|
else {
|
|
if (autoDesTotal > 0) { // there were auto cols
|
|
divisor = autoDesTotal;
|
|
numerator = numeratorAutoDes;
|
|
}
|
|
else if (fixTotal > 0) { // there were fix cols but no auto
|
|
divisor = fixTotal;
|
|
numerator = numeratorFix;
|
|
}
|
|
else if (pctTotal > 0) { // there were only pct cols
|
|
divisor = pctTotal;
|
|
numerator = numeratorPct;
|
|
}
|
|
else continue;
|
|
|
|
}
|
|
}
|
|
// calculate the adj col width
|
|
nscoord newColAdjWidth = (0 >= divisor)
|
|
? NSToCoordRound( ((float)availWidth) / ((float)aColSpan) )
|
|
: NSToCoordRound( (((float)numerator) / ((float)divisor)) * availWidth);
|
|
newColAdjWidth = nsTableFrame::RoundToPixel(newColAdjWidth, aPixelToTwips);
|
|
// MIN_CON gets added to what is there, the others don't
|
|
if (MIN_CON == aWidthIndex) {
|
|
newColAdjWidth += colWidth;
|
|
}
|
|
if (newColAdjWidth > colWidth) {
|
|
if (FIX == aWidthIndex) {
|
|
// a colspan cannot fix a column below what a cell desires on its own
|
|
nscoord desCon = colFrame->GetWidth(DES_CON); // do not consider DES_ADJ
|
|
if (desCon > newColAdjWidth) {
|
|
newColAdjWidth = desCon;
|
|
}
|
|
}
|
|
colFrame->SetWidth(aWidthIndex + NUM_MAJOR_WIDTHS, newColAdjWidth);
|
|
colFrame->SetConstrainingCell(aCellFrame); // XXX is this right?
|
|
}
|
|
}
|
|
}
|
|
|
|
//DumpColWidths(*mTableFrame, "exit ComputeNonPctColspanWidths", aCellFrame, aColIndex, aWidthIndex, aLimitType);
|
|
return result;
|
|
}
|
|
|
|
// XXX percent left and right padding are not figured in the calculations
|
|
// The table frame needs to be used as the percent base because the reflow
|
|
// state may have an unconstrained width. There should probably be a frame
|
|
// state bit indicating that horizontal padding is percentage based.
|
|
|
|
// Determine min, desired, fixed, and proportional sizes for the cols and
|
|
// and calculate min/max table width
|
|
PRBool
|
|
BasicTableLayoutStrategy::AssignNonPctColumnWidths(nsIPresContext* aPresContext,
|
|
nscoord aMaxWidth,
|
|
const nsHTMLReflowState& aReflowState,
|
|
float aPixelToTwips)
|
|
{
|
|
if (gsDebugAssign) {printf("AssignNonPctColWidths en max=%d count=%d \n", aMaxWidth, gsDebugCount++); mTableFrame->Dump(aPresContext, PR_FALSE, PR_TRUE, PR_FALSE);}
|
|
PRBool rv = PR_FALSE;
|
|
PRInt32 numRows = mTableFrame->GetRowCount();
|
|
PRInt32 numCols = mTableFrame->GetEffectiveColCount();
|
|
nscoord spacingX = mTableFrame->GetCellSpacingX();
|
|
PRInt32 colX, rowX;
|
|
mCellSpacingTotal = 0;
|
|
|
|
PRInt32 rawPropTotal = -1; // total of numbers of the type 1*, 2*, etc
|
|
PRInt32 numColsForColsAttr = 0; // Nav Quirks cols attribute for equal width cols
|
|
if (NS_STYLE_TABLE_COLS_NONE != mCols) {
|
|
numColsForColsAttr = (NS_STYLE_TABLE_COLS_ALL == mCols) ? numCols : mCols;
|
|
}
|
|
|
|
// For every column, determine it's min and desired width based on cell style
|
|
// base on cells which do not span cols. Also, determine mCellSpacingTotal
|
|
for (colX = 0; colX < numCols; colX++) {
|
|
nscoord minWidth = 0;
|
|
nscoord desWidth = 0;
|
|
nscoord fixWidth = WIDTH_NOT_SET;
|
|
|
|
// Get column frame and reset it
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
if (!colFrame) continue;
|
|
NS_ASSERTION(nsnull != colFrame, "bad col frame");
|
|
colFrame->ResetSizingInfo();
|
|
|
|
if (mTableFrame->GetNumCellsOriginatingInCol(colX) > 0) {
|
|
mCellSpacingTotal += spacingX;
|
|
}
|
|
|
|
// Scan the cells in the col that have colspan = 1 and find the maximum
|
|
// min, desired, and fixed cells.
|
|
nsTableCellFrame* fixContributor = nsnull;
|
|
nsTableCellFrame* desContributor = nsnull;
|
|
for (rowX = 0; rowX < numRows; rowX++) {
|
|
PRBool originates;
|
|
PRInt32 colSpan;
|
|
nsTableCellFrame* cellFrame = mTableFrame->GetCellInfoAt(rowX, colX, &originates, &colSpan);
|
|
// skip cells that don't originate at (rowX, colX); colspans are handled in the
|
|
// next pass, row spans don't need to be handled
|
|
if (!cellFrame || !originates || (colSpan > 1)) {
|
|
continue;
|
|
}
|
|
// these values include borders and padding
|
|
minWidth = PR_MAX(minWidth, cellFrame->GetPass1MaxElementSize().width);
|
|
nscoord cellDesWidth = cellFrame->GetMaximumWidth();
|
|
if (cellDesWidth > desWidth) {
|
|
desContributor = cellFrame;
|
|
desWidth = cellDesWidth;
|
|
}
|
|
// see if the cell has a style width specified
|
|
const nsStylePosition* cellPosition;
|
|
cellFrame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct *&)cellPosition);
|
|
if (eStyleUnit_Coord == cellPosition->mWidth.GetUnit()) {
|
|
nscoord coordValue = cellPosition->mWidth.GetCoordValue();
|
|
if (coordValue > 0) { // ignore if width == 0
|
|
// need to add padding into fixed width
|
|
nsSize percentBase(aReflowState.mComputedWidth, 0);
|
|
nsMargin padding = nsTableFrame::GetPadding(percentBase, cellFrame);
|
|
nscoord newFixWidth = coordValue + padding.left + padding.right;
|
|
// 2nd part of condition is Nav/IE Quirk like below
|
|
if ((newFixWidth > fixWidth) || ((newFixWidth == fixWidth) && (desContributor == cellFrame))) {
|
|
fixWidth = newFixWidth;
|
|
fixContributor = cellFrame;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Nav/IE Quirk like above
|
|
if (fixWidth > 0) {
|
|
if (mIsNavQuirksMode && (desWidth > fixWidth) && (fixContributor != desContributor)) {
|
|
fixWidth = WIDTH_NOT_SET;
|
|
fixContributor = nsnull;
|
|
}
|
|
else {
|
|
fixWidth = PR_MAX(fixWidth, minWidth);
|
|
}
|
|
}
|
|
desWidth = PR_MAX(desWidth, minWidth);
|
|
|
|
// cache the computed column info
|
|
colFrame->SetWidth(MIN_CON, minWidth);
|
|
colFrame->SetWidth(DES_CON, desWidth);
|
|
colFrame->SetConstrainingCell(fixContributor);
|
|
if (fixWidth > 0) {
|
|
colFrame->SetWidth(FIX, PR_MAX(fixWidth, minWidth));
|
|
}
|
|
|
|
// determine if there is a proportional column either from html4
|
|
// proportional width on a col or Nav Quirks cols attr
|
|
if (fixWidth <= 0) {
|
|
nscoord proportion = WIDTH_NOT_SET;
|
|
nsStyleCoord colStyleWidth = colFrame->GetStyleWidth();
|
|
if (eStyleUnit_Proportional == colStyleWidth.GetUnit()) {
|
|
proportion = colStyleWidth.GetIntValue();
|
|
}
|
|
else if (colX < numColsForColsAttr) {
|
|
proportion = 1;
|
|
if ((eStyleUnit_Percent == colStyleWidth.GetUnit()) &&
|
|
(colStyleWidth.GetPercentValue() > 0.0f)) {
|
|
proportion = WIDTH_NOT_SET;
|
|
}
|
|
}
|
|
if (proportion >= 0) {
|
|
rawPropTotal = PR_MAX(rawPropTotal, 0); // it was initialized to -1
|
|
colFrame->SetWidth(MIN_PRO, proportion);
|
|
nsColConstraint colConstraint = (0 == proportion)
|
|
? e0ProportionConstraint : eProportionConstraint;
|
|
rawPropTotal += proportion;
|
|
colFrame->SetConstraint(colConstraint);
|
|
}
|
|
}
|
|
}
|
|
if (mCellSpacingTotal > 0) {
|
|
mCellSpacingTotal += spacingX; // add last cell spacing on right
|
|
}
|
|
|
|
// figure the proportional widths for porportional cols
|
|
if (rawPropTotal > 0) {
|
|
// get the total desired widths
|
|
nscoord desTotal = 0;
|
|
for (colX = 0; colX < numCols; colX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
if (!colFrame) continue;
|
|
// consider 1*, 2*, etc cols, but ignore 0* cols
|
|
if (colFrame->GetWidth(MIN_PRO) > 0) {
|
|
desTotal += colFrame->GetDesWidth();
|
|
}
|
|
}
|
|
// find the largest combined prop size considering each prop col and
|
|
// its desired size
|
|
nscoord maxPropTotal = 0;
|
|
for (colX = 0; colX < numCols; colX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
nscoord rawProp = colFrame->GetWidth(MIN_PRO);
|
|
if (rawProp > 0) {
|
|
nscoord desWidth = colFrame->GetDesWidth();
|
|
nscoord propTotal = NSToCoordRound( ((float)desWidth) * ((float)rawPropTotal) / (float)rawProp );
|
|
nsTableFrame::RoundToPixel(propTotal, aPixelToTwips);
|
|
maxPropTotal = PR_MAX(maxPropTotal, propTotal);
|
|
}
|
|
}
|
|
// set MIN_PRO widths based on the maxPropTotal
|
|
for (colX = 0; colX < numCols; colX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
if (!colFrame) continue;
|
|
nscoord rawProp = colFrame->GetWidth(MIN_PRO);
|
|
if (0 == rawProp) {
|
|
// a 0* col gets only the min width
|
|
colFrame->SetWidth(MIN_PRO, colFrame->GetMinWidth());
|
|
}
|
|
else if ((rawProp > 0) && (rawPropTotal > 0)) {
|
|
nscoord desWidth = colFrame->GetDesWidth();
|
|
nscoord propWidth = NSToCoordRound( ((float)maxPropTotal) * ((float)rawProp) / (float)rawPropTotal ) ;
|
|
propWidth = nsTableFrame::RoundToPixel(propWidth, aPixelToTwips);
|
|
colFrame->SetWidth(MIN_PRO, PR_MAX(propWidth, colFrame->GetMinWidth()));
|
|
}
|
|
}
|
|
}
|
|
|
|
ComputeNonPctColspanWidths(aReflowState, PR_FALSE, aPixelToTwips);
|
|
|
|
// Set the col's fixed width if present
|
|
// Set the table col width for each col to the content min.
|
|
for (colX = 0; colX < numCols; colX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
if (!colFrame) continue;
|
|
nscoord fixColWidth = colFrame->GetWidth(FIX);
|
|
// use the style width of a col only if the col hasn't gotten a fixed width from any cell
|
|
if (fixColWidth <= 0) {
|
|
nsStyleCoord colStyleWidth = colFrame->GetStyleWidth();
|
|
if (eStyleUnit_Coord == colStyleWidth.GetUnit()) {
|
|
fixColWidth = colStyleWidth.GetCoordValue();
|
|
if (fixColWidth > 0) {
|
|
colFrame->SetWidth(FIX, fixColWidth);
|
|
}
|
|
}
|
|
}
|
|
nscoord minWidth = colFrame->GetMinWidth();
|
|
mTableFrame->SetColumnWidth(colX, minWidth);
|
|
}
|
|
|
|
if (gsDebugAssign) {printf("AssignNonPctColWidths ex\n"); mTableFrame->Dump(aPresContext, PR_FALSE, PR_TRUE, PR_FALSE);}
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
BasicTableLayoutStrategy::ReduceOverSpecifiedPctCols(nscoord aExcess)
|
|
{
|
|
nscoord numCols = mTableFrame->GetEffectiveColCount();
|
|
for (PRInt32 colX = numCols - 1; (colX >= 0) && (aExcess > 0); colX--) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
if (!colFrame) continue;
|
|
nscoord pctWidth = colFrame->GetWidth(PCT);
|
|
nscoord reduction = 0;
|
|
if (pctWidth > 0) {
|
|
reduction = (aExcess > pctWidth) ? pctWidth : aExcess;
|
|
nscoord newPctWidth = (reduction == pctWidth) ? WIDTH_NOT_SET : pctWidth - reduction;
|
|
colFrame->SetWidth(PCT, PR_MAX(newPctWidth, colFrame->GetMinWidth()));
|
|
}
|
|
else {
|
|
nscoord pctAdjWidth = colFrame->GetWidth(PCT_ADJ);
|
|
if (pctAdjWidth > 0) {
|
|
reduction = (aExcess > pctAdjWidth) ? pctAdjWidth : aExcess;
|
|
nscoord newPctAdjWidth = (reduction == pctAdjWidth) ? WIDTH_NOT_SET : pctAdjWidth - reduction;
|
|
colFrame->SetWidth(PCT_ADJ, PR_MAX(newPctAdjWidth, colFrame->GetMinWidth()));
|
|
}
|
|
}
|
|
aExcess -= reduction;
|
|
}
|
|
}
|
|
|
|
// Determine percentage col widths for each col frame
|
|
nscoord
|
|
BasicTableLayoutStrategy::AssignPctColumnWidths(const nsHTMLReflowState aReflowState,
|
|
nscoord aBasisIn,
|
|
PRBool aTableIsAutoWidth,
|
|
float aPixelToTwips)
|
|
{
|
|
mTableFrame->SetHasCellSpanningPctCol(PR_FALSE); // this gets refigured below
|
|
PRInt32 numRows = mTableFrame->GetRowCount();
|
|
PRInt32 numCols = mTableFrame->GetEffectiveColCount();
|
|
nscoord spacingX = mTableFrame->GetCellSpacingX();
|
|
PRInt32 colX, rowX;
|
|
|
|
nscoord basis; // basis to use for percentage based calculations
|
|
if (!aTableIsAutoWidth) {
|
|
if (NS_UNCONSTRAINEDSIZE == aBasisIn) {
|
|
return 0; // don't do the calculations on unconstrained basis
|
|
}
|
|
basis = aBasisIn;
|
|
}
|
|
else {
|
|
// For an auto table, determine the potentially new percent adjusted width based
|
|
// on percent cells/cols. This probably should only be a NavQuirks thing, since
|
|
// a percentage based cell or column on an auto table should force the column to auto
|
|
basis = 0;
|
|
float* rawPctValues = new float[numCols]; // store the raw pct values
|
|
for (colX = 0; colX < numCols; colX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
if (!colFrame) continue;
|
|
nscoord maxColBasis = -1;
|
|
// Scan the cells in the col
|
|
for (rowX = 0; rowX < numRows; rowX++) {
|
|
PRBool originates;
|
|
PRInt32 colSpan;
|
|
nsTableCellFrame* cellFrame = mTableFrame->GetCellInfoAt(rowX, colX, &originates, &colSpan);
|
|
if (!originates) { // skip cells that don't originate in the col
|
|
continue;
|
|
}
|
|
// see if the cell has a style percent width specified
|
|
const nsStylePosition* cellPosition;
|
|
cellFrame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct *&)cellPosition);
|
|
if (eStyleUnit_Percent == cellPosition->mWidth.GetUnit()) {
|
|
float percent = cellPosition->mWidth.GetPercentValue();
|
|
if (percent > 0.0f) {
|
|
// calculate the preferred width of the cell based on fixWidth and desWidth
|
|
nscoord cellDesWidth = 0;
|
|
float spanPct = percent / float(colSpan);
|
|
for (PRInt32 spanX = 0; spanX < colSpan; spanX++) {
|
|
nsTableColFrame* spanFrame = mTableFrame->GetColFrame(colX + spanX);
|
|
if (!spanFrame) continue;
|
|
cellDesWidth += spanFrame->GetWidth(DES_CON); // don't consider DES_ADJ
|
|
rawPctValues[colX + spanX] = PR_MAX(rawPctValues[colX + spanX], spanPct);
|
|
}
|
|
// figure the basis using the cell's desired width and percent
|
|
nscoord colBasis = nsTableFrame::RoundToPixel(NSToCoordRound((float)cellDesWidth / percent), aPixelToTwips);
|
|
maxColBasis = PR_MAX(maxColBasis, colBasis);
|
|
}
|
|
}
|
|
}
|
|
if (-1 == maxColBasis) {
|
|
// see if the col has a style percent width specified
|
|
nsStyleCoord colStyleWidth = colFrame->GetStyleWidth();
|
|
if (eStyleUnit_Percent == colStyleWidth.GetUnit()) {
|
|
float percent = colStyleWidth.GetPercentValue();
|
|
maxColBasis = 0;
|
|
if (percent > 0.0f) {
|
|
rawPctValues[colX] = PR_MAX(rawPctValues[colX], percent);
|
|
nscoord desWidth = colFrame->GetWidth(DES_CON); // don't consider DES_ADJ
|
|
maxColBasis = nsTableFrame::RoundToPixel(NSToCoordRound((float)desWidth / percent), aPixelToTwips);
|
|
}
|
|
}
|
|
}
|
|
basis = PR_MAX(basis, maxColBasis);
|
|
} // end for (colX ..
|
|
|
|
float perTotal = 0.0f; // total of percentage constrained cols and/or cells in cols
|
|
nscoord fixWidthTotal = 0; // total of fixed widths of all cols
|
|
PRInt32 numPerCols = 0; // number of colums that have percentage constraints
|
|
nscoord fixDesTotal = 0; // total of fix or des widths of cols
|
|
nscoord fixDesTotalNoPct = 0; // total of fix or des widths of cols without pct
|
|
|
|
for (colX = 0; colX < numCols; colX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
nscoord fixWidth = colFrame->GetFixWidth();
|
|
nscoord fixDesWidth = (fixWidth > 0) ? fixWidth : colFrame->GetDesWidth();
|
|
fixDesTotal += fixDesWidth;
|
|
if (rawPctValues[colX] + perTotal > 1.0f) {
|
|
rawPctValues[colX] = PR_MAX(1.0f - perTotal, 0.0f);
|
|
}
|
|
if (rawPctValues[colX] > 0.0f) {
|
|
numPerCols++;
|
|
perTotal += rawPctValues[colX];
|
|
}
|
|
else {
|
|
fixDesTotalNoPct += fixDesWidth;
|
|
}
|
|
}
|
|
delete [] rawPctValues; // destroy the raw pct values
|
|
// If there are no pct cells or cols, there is nothing to do.
|
|
if ((0 == numPerCols) || (0.0f == perTotal)) {
|
|
return 0;
|
|
}
|
|
// If there is only one col and it is % based, it won't affect anything
|
|
if ((1 == numCols) && (numCols == numPerCols)) {
|
|
return 0;
|
|
}
|
|
|
|
// compute a basis considering total percentages and the desired width of everything else
|
|
if (perTotal < 1.0f) {
|
|
if (perTotal > 0.0f) {
|
|
nscoord otherBasis = nsTableFrame::RoundToPixel(NSToCoordRound((float)fixDesTotalNoPct / (1.0f - perTotal)), aPixelToTwips);
|
|
basis = PR_MAX(basis, otherBasis);
|
|
}
|
|
}
|
|
else if ((fixDesTotalNoPct > 0) && (NS_UNCONSTRAINEDSIZE != aBasisIn)) { // make the basis as big as possible
|
|
basis = aBasisIn;
|
|
}
|
|
basis = PR_MAX(basis, fixDesTotal);
|
|
basis = PR_MIN(basis, aBasisIn); // don't exceed the max we were given
|
|
}
|
|
|
|
nscoord colPctTotal = 0;
|
|
|
|
// Determine the percentage contribution for cols and for cells with colspan = 1
|
|
// Iterate backwards, similarly to the reasoning in AssignNonPctColumnWidths
|
|
for (colX = numCols - 1; colX >= 0; colX--) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
if (!colFrame) continue;
|
|
nscoord maxColPctWidth = WIDTH_NOT_SET;
|
|
float maxColPct = 0.0f;
|
|
|
|
nsTableCellFrame* percentContributor = nsnull;
|
|
// Scan the cells in the col that have colspan = 1; assign PER widths
|
|
for (rowX = 0; rowX < numRows; rowX++) {
|
|
PRBool originates;
|
|
PRInt32 colSpan;
|
|
nsTableCellFrame* cellFrame = mTableFrame->GetCellInfoAt(rowX, colX, &originates, &colSpan);
|
|
// skip cells that don't originate at (rowX, colX); colspans are handled in the
|
|
// next pass, row spans don't need to be handled
|
|
if (!cellFrame || !originates || (colSpan > 1)) {
|
|
continue;
|
|
}
|
|
// see if the cell has a style percent width specified
|
|
const nsStylePosition* cellPosition;
|
|
cellFrame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct *&)cellPosition);
|
|
if (eStyleUnit_Percent == cellPosition->mWidth.GetUnit()) {
|
|
float percent = cellPosition->mWidth.GetPercentValue();
|
|
if (percent > maxColPct) {
|
|
maxColPct = percent;
|
|
maxColPctWidth = NSToCoordRound( ((float)basis) * maxColPct );
|
|
percentContributor = cellFrame;
|
|
if (!mIsNavQuirksMode) {
|
|
// need to add padding
|
|
nsMargin padding = nsTableFrame::GetPadding(nsSize(basis, 0), cellFrame);
|
|
maxColPctWidth += padding.left + padding.right;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (WIDTH_NOT_SET == maxColPctWidth) {
|
|
// see if the col has a style percent width specified
|
|
nsStyleCoord colStyleWidth = colFrame->GetStyleWidth();
|
|
if (eStyleUnit_Percent == colStyleWidth.GetUnit()) {
|
|
maxColPct = colStyleWidth.GetPercentValue();
|
|
maxColPctWidth = nsTableFrame::RoundToPixel(NSToCoordRound( ((float)basis) * maxColPct ), aPixelToTwips);
|
|
}
|
|
}
|
|
// conflicting pct/fixed widths are recorded. Nav 4.x may be changing the
|
|
// fixed width value if it exceeds the pct value and not recording the pct
|
|
// value. This is not being done and IE5 doesn't do it either.
|
|
if (maxColPctWidth > 0) {
|
|
maxColPctWidth = PR_MAX(maxColPctWidth, colFrame->GetWidth(MIN_CON));
|
|
colFrame->SetWidth(PCT, maxColPctWidth);
|
|
colFrame->SetConstrainingCell(percentContributor);
|
|
colPctTotal += NSToCoordRound(100.0f * (float)maxColPct);
|
|
}
|
|
}
|
|
|
|
// if the percent total went over 100%, adjustments need to be made to right most cols
|
|
if (colPctTotal > 100) {
|
|
ReduceOverSpecifiedPctCols(NSToCoordRound(((float)(colPctTotal - 100)) * 0.01f * (float)basis));
|
|
colPctTotal = 100;
|
|
}
|
|
|
|
// check to see if a cell spans a percentage col. This will cause the MIN_ADJ,
|
|
// FIX_ADJ, and DES_ADJ values to be recomputed
|
|
for (colX = 0; colX < numCols; colX++) {
|
|
for (rowX = 0; rowX < numRows; rowX++) {
|
|
PRBool originates;
|
|
PRInt32 colSpan;
|
|
nsTableCellFrame* cellFrame = mTableFrame->GetCellInfoAt(rowX, colX, &originates, &colSpan);
|
|
if (!originates || (1 == colSpan)) {
|
|
continue;
|
|
}
|
|
// determine if the cell spans cols which have a pct value
|
|
for (PRInt32 spanX = 0; spanX < colSpan; spanX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX + spanX);
|
|
if (!colFrame) continue;
|
|
if (colFrame->GetWidth(PCT) > 0) {
|
|
mTableFrame->SetHasCellSpanningPctCol(PR_TRUE);
|
|
// recompute the MIN_ADJ, FIX_ADJ, and DES_ADJ values
|
|
ComputeNonPctColspanWidths(aReflowState, PR_TRUE, aPixelToTwips);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// For each col, consider the cells originating in it with colspans > 1.
|
|
// Adjust the cols that each cell spans if necessary.
|
|
for (colX = 0; colX < numCols; colX++) {
|
|
for (rowX = 0; rowX < numRows; rowX++) {
|
|
PRBool originates;
|
|
PRInt32 colSpan;
|
|
nsTableCellFrame* cellFrame = mTableFrame->GetCellInfoAt(rowX, colX, &originates, &colSpan);
|
|
if (!originates || (1 == colSpan)) {
|
|
continue;
|
|
}
|
|
nscoord cellPctWidth = WIDTH_NOT_SET;
|
|
// see if the cell has a style percentage width specified
|
|
const nsStylePosition* cellPosition;
|
|
cellFrame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct *&)cellPosition);
|
|
float cellPct = 0.0f;
|
|
if (eStyleUnit_Percent == cellPosition->mWidth.GetUnit()) {
|
|
cellPct = cellPosition->mWidth.GetPercentValue();
|
|
cellPctWidth = nsTableFrame::RoundToPixel(NSToCoordRound( ((float)basis) * cellPct ), aPixelToTwips);
|
|
if (!mIsNavQuirksMode) {
|
|
// need to add padding
|
|
nsMargin padding = nsTableFrame::GetPadding(nsSize(basis, 0), cellFrame);
|
|
cellPctWidth += padding.left + padding.right;
|
|
}
|
|
}
|
|
if (cellPctWidth > 0) {
|
|
nscoord spanCellSpacing = 0;
|
|
nscoord spanTotal = 0;
|
|
nscoord colPctWidthTotal = 0;
|
|
// accumulate the spanTotal as the max of MIN, DES, FIX, PCT
|
|
PRInt32 spanX;
|
|
for (spanX = 0; spanX < colSpan; spanX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX + spanX);
|
|
if (!colFrame) continue;
|
|
nscoord colPctWidth = colFrame->GetWidth(PCT);
|
|
if (colPctWidth > 0) { // skip pct cols
|
|
colPctWidthTotal += colPctWidth;
|
|
continue;
|
|
}
|
|
nscoord colWidth = PR_MAX(colFrame->GetMinWidth(), colFrame->GetFixWidth());
|
|
colWidth = PR_MAX(colWidth, colFrame->GetDesWidth()); // XXX check this
|
|
//colWidth = PR_MAX(colWidth, colFrame->GetPctWidth());
|
|
spanTotal += colWidth;
|
|
if ((spanX > 0) && (mTableFrame->GetNumCellsOriginatingInCol(colX + spanX) > 0)) {
|
|
spanCellSpacing += spacingX;
|
|
}
|
|
}
|
|
cellPctWidth += spanCellSpacing; // add it back in since it was subtracted from aBasisIn
|
|
if (cellPctWidth <= 0) {
|
|
continue;
|
|
}
|
|
if (colPctWidthTotal < cellPctWidth) {
|
|
// record the percent contributions for the spanned cols
|
|
for (spanX = 0; spanX < colSpan; spanX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX + spanX);
|
|
if (!colFrame) continue;
|
|
if (colFrame->GetWidth(PCT) > 0) { // skip pct cols
|
|
continue;
|
|
}
|
|
nscoord minWidth = colFrame->GetMinWidth();
|
|
nscoord colWidth = PR_MAX(minWidth, colFrame->GetFixWidth());
|
|
colWidth = PR_MAX(colWidth, colFrame->GetDesWidth()); // XXX check this
|
|
float avail = (float)PR_MAX(cellPctWidth - colPctWidthTotal, 0);
|
|
float colPctAdj = (0 == spanTotal)
|
|
? avail / ((float) colSpan)
|
|
: (avail / (float)basis) * (((float)colWidth) / (float)spanTotal);
|
|
if (colPctAdj > 0) {
|
|
nscoord colPctAdjWidth = colFrame->GetWidth(PCT_ADJ);
|
|
nscoord newColPctAdjWidth = nsTableFrame::RoundToPixel(NSToCoordRound(colPctAdj * (float)basis), aPixelToTwips);
|
|
if (newColPctAdjWidth > colPctAdjWidth) {
|
|
newColPctAdjWidth = PR_MAX(newColPctAdjWidth, minWidth);
|
|
if (newColPctAdjWidth > colFrame->GetWidth(PCT)) {
|
|
colFrame->SetWidth(PCT_ADJ, newColPctAdjWidth);
|
|
colFrame->SetConstrainingCell(cellFrame);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} // end for (rowX ..
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
if (!colFrame) continue;
|
|
colPctTotal += NSToCoordRound(100.0f * (float)colFrame->GetWidth(PCT_ADJ) / (float)basis);
|
|
} // end for (colX ..
|
|
|
|
// if the percent total went over 100%, adjustments need to be made to right most cols
|
|
if (colPctTotal > 100) {
|
|
ReduceOverSpecifiedPctCols(NSToCoordRound(((float)(colPctTotal - 100)) * 0.01f * (float)basis));
|
|
}
|
|
|
|
return basis;
|
|
}
|
|
|
|
nscoord BasicTableLayoutStrategy::GetTableMinWidth() const
|
|
{
|
|
nscoord minWidth = 0;
|
|
nscoord spacingX = mTableFrame->GetCellSpacingX();
|
|
PRInt32 numCols = mTableFrame->GetEffectiveColCount();
|
|
for (PRInt32 colX = 0; colX < numCols; colX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
if (!colFrame) continue;
|
|
minWidth += PR_MAX(colFrame->GetMinWidth(), colFrame->GetWidth(MIN_ADJ));
|
|
if (mTableFrame->GetNumCellsOriginatingInCol(colX) > 0) {
|
|
minWidth += spacingX;
|
|
}
|
|
}
|
|
// if it is not a degenerate table, add the last spacing on the right
|
|
if (minWidth > 0) {
|
|
minWidth += spacingX;
|
|
}
|
|
return minWidth;
|
|
}
|
|
|
|
nscoord BasicTableLayoutStrategy::GetTableMaxWidth(const nsHTMLReflowState& aReflowState) const
|
|
{
|
|
nscoord maxWidth = 0;
|
|
|
|
if (mTableFrame->IsAutoWidth()) {
|
|
nscoord spacingX = mTableFrame->GetCellSpacingX();
|
|
PRInt32 numCols = mTableFrame->GetColCount();
|
|
for (PRInt32 colX = 0; colX < numCols; colX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
if (!colFrame) continue;
|
|
nscoord width = colFrame->GetPctWidth();
|
|
if (width <= 0) {
|
|
width = colFrame->GetFixWidth();
|
|
if (width <= 0) {
|
|
width = colFrame->GetWidth(MIN_PRO);
|
|
if (width <= 0) {
|
|
width = colFrame->GetDesWidth();
|
|
}
|
|
}
|
|
}
|
|
maxWidth += width;
|
|
if (mTableFrame->GetNumCellsOriginatingInCol(colX) > 0) {
|
|
maxWidth += spacingX;
|
|
}
|
|
}
|
|
// if it is not a degenerate table, add the last spacing on the right
|
|
if (maxWidth > 0) {
|
|
maxWidth += spacingX;
|
|
}
|
|
}
|
|
else {
|
|
maxWidth = PR_MAX(GetTableMinWidth(), aReflowState.mComputedWidth);
|
|
}
|
|
return maxWidth;
|
|
}
|
|
|
|
// calculate totals by width type. The logic here is kept in synch with
|
|
// that in CanAllocate. aDupedWidths (duplicatd) are widths that will be
|
|
// allocated in BalanceColumnWidths before aTotalsWidths (e.g. aTotalWidths[PCT]
|
|
// will have aDuplicatedWidths[PCT] consisting of the MIN widths of cols which
|
|
// have a PCT width).
|
|
void BasicTableLayoutStrategy::CalculateTotals(PRInt32& aCellSpacing,
|
|
PRInt32* aTotalCounts,
|
|
PRInt32* aTotalWidths,
|
|
PRInt32* aDupedWidths,
|
|
PRInt32& a0ProportionalCount)
|
|
{
|
|
//mTableFrame->Dump(PR_TRUE, PR_FALSE);
|
|
aCellSpacing = 0;
|
|
for (PRInt32 widthX = 0; widthX < NUM_WIDTHS; widthX++) {
|
|
aTotalCounts[widthX] = 0;
|
|
aTotalWidths[widthX] = 0;
|
|
aDupedWidths[widthX] = 0;
|
|
}
|
|
a0ProportionalCount = 0;
|
|
|
|
nscoord spacingX = mTableFrame->GetCellSpacingX();
|
|
PRInt32 numCols = mTableFrame->GetEffectiveColCount();
|
|
PRInt32 colX;
|
|
|
|
for (colX = 0; colX < numCols; colX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
if (!colFrame) continue;
|
|
if (mTableFrame->GetNumCellsOriginatingInCol(colX) > 0) {
|
|
aCellSpacing += spacingX;
|
|
}
|
|
nscoord minCol = colFrame->GetMinWidth();
|
|
aTotalCounts[MIN_CON]++;
|
|
aTotalWidths[MIN_CON] += minCol;
|
|
|
|
if (e0ProportionConstraint == colFrame->GetConstraint()) {
|
|
a0ProportionalCount++;
|
|
}
|
|
|
|
nscoord pct = colFrame->GetPctWidth();
|
|
nscoord fix = colFrame->GetWidth(FIX);
|
|
nscoord fixAdj = colFrame->GetWidth(FIX_ADJ);
|
|
// if there is a pct width then no others are considered
|
|
if (pct > 0) {
|
|
aTotalCounts[PCT]++;
|
|
aTotalWidths[PCT] += PR_MAX(pct, minCol);
|
|
aDupedWidths[PCT] += minCol;
|
|
}
|
|
else if ((fix > 0) || (fixAdj > 0)) {
|
|
if (fix > 0) {
|
|
aTotalCounts[FIX]++;
|
|
aTotalWidths[FIX] += PR_MAX(fix, minCol);
|
|
aDupedWidths[FIX] += minCol;
|
|
}
|
|
nscoord desCon = colFrame->GetWidth(DES_CON);
|
|
if (fixAdj > 0) {
|
|
if (fixAdj > fix) {
|
|
aTotalCounts[FIX_ADJ]++;
|
|
aTotalWidths[FIX_ADJ] += PR_MAX(fixAdj, minCol);
|
|
if (fix > 0) {
|
|
aDupedWidths[FIX_ADJ] += fix;
|
|
}
|
|
else { // there was no fix
|
|
aDupedWidths[FIX_ADJ] += minCol;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if ((eProportionConstraint == colFrame->GetConstraint()) ||
|
|
(e0ProportionConstraint == colFrame->GetConstraint())) {
|
|
aTotalCounts[MIN_PRO]++;
|
|
aTotalWidths[MIN_PRO] += PR_MAX(colFrame->GetWidth(MIN_PRO), minCol);
|
|
aDupedWidths[MIN_PRO] += minCol;
|
|
}
|
|
else {
|
|
// desired alone is lowest priority
|
|
aTotalCounts[DES_CON]++;
|
|
aTotalWidths[DES_CON] += PR_MAX(colFrame->GetDesWidth(), minCol);
|
|
aDupedWidths[DES_CON] += minCol;
|
|
}
|
|
}
|
|
// if it is not a degenerate table, add the last spacing on the right
|
|
if (numCols > 0) {
|
|
aCellSpacing += spacingX;
|
|
}
|
|
}
|
|
|
|
|
|
struct nsColInfo {
|
|
nsColInfo(nsTableColFrame* aFrame,
|
|
PRInt32 aIndex,
|
|
PRInt32 aMinWidth,
|
|
PRInt32 aWidth,
|
|
PRInt32 aMaxWidth)
|
|
: mFrame(aFrame), mIndex(aIndex), mMinWidth(aMinWidth),
|
|
mWidth(aWidth), mMaxWidth(aMaxWidth), mWeight(0)
|
|
{}
|
|
nsTableColFrame* mFrame;
|
|
PRInt32 mIndex;
|
|
PRInt32 mMinWidth;
|
|
PRInt32 mWidth;
|
|
PRInt32 mMaxWidth;
|
|
float mWeight;
|
|
};
|
|
|
|
void
|
|
AC_Wrapup(nsTableFrame* aTableFrame,
|
|
PRInt32 aNumItems,
|
|
nsColInfo** aColInfo,
|
|
PRBool aAbort = PR_FALSE)
|
|
{
|
|
if (aColInfo) {
|
|
for (PRInt32 i = 0; i < aNumItems; i++) {
|
|
if (aColInfo[i]) {
|
|
if (!aAbort) {
|
|
aTableFrame->SetColumnWidth(aColInfo[i]->mIndex, aColInfo[i]->mWidth);
|
|
}
|
|
delete aColInfo[i];
|
|
}
|
|
}
|
|
delete [] aColInfo;
|
|
}
|
|
}
|
|
|
|
void
|
|
AC_Increase(PRInt32 aNumAutoCols,
|
|
nsColInfo** aColInfo,
|
|
PRInt32 aDivisor,
|
|
PRInt32& aAvailWidth,
|
|
float aPixelToTwips)
|
|
{
|
|
for (PRInt32 i = 0; i < aNumAutoCols; i++) {
|
|
if ((aAvailWidth <= 0) || (aDivisor <= 0)) {
|
|
break;
|
|
}
|
|
// aDivisor represents the sum of unallocated space (diff between max and min values)
|
|
float percent = ((float)aColInfo[i]->mMaxWidth - (float)aColInfo[i]->mMinWidth) / (float)aDivisor;
|
|
aDivisor -= aColInfo[i]->mMaxWidth - aColInfo[i]->mMinWidth;
|
|
|
|
nscoord addition = nsTableFrame::RoundToPixel(NSToCoordRound(((float)(aAvailWidth)) * percent), aPixelToTwips);
|
|
// if its the last col, try to give what's left to it
|
|
if ((i == aNumAutoCols - 1) && (addition < aAvailWidth)) {
|
|
addition = aAvailWidth;
|
|
}
|
|
// don't let the addition exceed what is available to add
|
|
addition = PR_MIN(addition, aAvailWidth);
|
|
// don't go over the col max
|
|
addition = PR_MIN(addition, aColInfo[i]->mMaxWidth - aColInfo[i]->mWidth);
|
|
aColInfo[i]->mWidth += addition;
|
|
aAvailWidth -= addition;
|
|
}
|
|
}
|
|
|
|
void
|
|
AC_Decrease(PRInt32 aNumAutoCols,
|
|
nsColInfo** aColInfo,
|
|
PRInt32 aDivisor,
|
|
PRInt32& aExcess,
|
|
float aPixelToTwips)
|
|
{
|
|
for (PRInt32 i = 0; i < aNumAutoCols; i++) {
|
|
if ((aExcess <= 0) || (aDivisor <= 0)) {
|
|
break;
|
|
}
|
|
float percent = ((float)aColInfo[i]->mMaxWidth) / (float)aDivisor;
|
|
aDivisor -= aColInfo[i]->mMaxWidth;
|
|
nscoord reduction = nsTableFrame::RoundToPixel(NSToCoordRound(((float)(aExcess)) * percent), aPixelToTwips);
|
|
// if its the last col, try to remove the remaining excess from it
|
|
if ((i == aNumAutoCols - 1) && (reduction < aExcess)) {
|
|
reduction = aExcess;
|
|
}
|
|
// don't let the reduction exceed what is available to reduce
|
|
reduction = PR_MIN(reduction, aExcess);
|
|
// don't go under the col min
|
|
reduction = PR_MIN(reduction, aColInfo[i]->mWidth - aColInfo[i]->mMinWidth);
|
|
aColInfo[i]->mWidth -= reduction;
|
|
aExcess -= reduction;
|
|
}
|
|
}
|
|
|
|
void
|
|
AC_Sort(nsColInfo** aColInfo, PRInt32 aNumCols)
|
|
{
|
|
// sort the cols based on the Weight
|
|
for (PRInt32 j = aNumCols - 1; j > 0; j--) {
|
|
for (PRInt32 i = 0; i < j; i++) {
|
|
if (aColInfo[i]->mWeight < aColInfo[i+1]->mWeight) { // swap them
|
|
nsColInfo* save = aColInfo[i];
|
|
aColInfo[i] = aColInfo[i+1];
|
|
aColInfo[i+1] = save;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// this assumes that the table has set the width for each col to be its min
|
|
void BasicTableLayoutStrategy::AllocateConstrained(PRInt32 aAvailWidth,
|
|
PRInt32 aWidthType,
|
|
PRBool aStartAtMin,
|
|
PRInt32* aAllocTypes,
|
|
float aPixelToTwips)
|
|
{
|
|
if ((0 == aAvailWidth) || (aWidthType < 0) || (aWidthType >= NUM_WIDTHS)) {
|
|
NS_ASSERTION(PR_TRUE, "invalid args to AllocateConstrained");
|
|
return;
|
|
}
|
|
|
|
PRInt32 numCols = mTableFrame->GetEffectiveColCount();
|
|
PRInt32 numConstrainedCols = 0;
|
|
nscoord sumMaxConstraints = 0;
|
|
nscoord sumMinConstraints = 0;
|
|
PRInt32 colX;
|
|
// find out how many constrained cols there are
|
|
for (colX = 0; colX < numCols; colX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
if (!colFrame) continue;
|
|
if (!CanAllocate(aWidthType, aAllocTypes[colX], colFrame)) {
|
|
continue;
|
|
}
|
|
numConstrainedCols++;
|
|
}
|
|
|
|
// allocate storage for the constrained cols. Only they get adjusted.
|
|
nsColInfo** colInfo = new nsColInfo*[numConstrainedCols];
|
|
if (!colInfo) return;
|
|
memset(colInfo, 0, numConstrainedCols * sizeof(nsColInfo *));
|
|
|
|
PRInt32 maxMinDiff = 0;
|
|
PRInt32 constrColX = 0;
|
|
// set the col info entries for each constrained col
|
|
for (colX = 0; colX < numCols; colX++) {
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colX);
|
|
if (!colFrame) continue;
|
|
if (!CanAllocate(aWidthType, aAllocTypes[colX], colFrame)) {
|
|
continue;
|
|
}
|
|
nscoord minWidth = mTableFrame->GetColumnWidth(colX);
|
|
nscoord maxWidth = GetColWidth(colFrame, aWidthType);
|
|
|
|
if (maxWidth <= 0) continue;
|
|
|
|
sumMaxConstraints += maxWidth;
|
|
sumMinConstraints += minWidth;
|
|
|
|
maxWidth = PR_MAX(maxWidth, minWidth);
|
|
maxMinDiff += maxWidth - minWidth;
|
|
nscoord startWidth = (aStartAtMin) ? minWidth : maxWidth;
|
|
colInfo[constrColX] = new nsColInfo(colFrame, colX, minWidth, startWidth, maxWidth);
|
|
if (!colInfo[constrColX]) {
|
|
AC_Wrapup(mTableFrame, numConstrainedCols, colInfo, PR_TRUE);
|
|
return;
|
|
}
|
|
aAllocTypes[colX] = aWidthType;
|
|
constrColX++;
|
|
}
|
|
|
|
if (constrColX < numConstrainedCols) {
|
|
// some of the constrainted cols might have been 0 and skipped
|
|
numConstrainedCols = constrColX;
|
|
}
|
|
|
|
PRInt32 i;
|
|
if (aStartAtMin) { // allocate extra space
|
|
nscoord availWidth = aAvailWidth;
|
|
for (i = 0; i < numConstrainedCols; i++) {
|
|
// the weight here is a relative metric for determining when cols reach their max constraint.
|
|
// A col with a larger weight will reach its max before one with a smaller value.
|
|
nscoord delta = colInfo[i]->mMaxWidth - colInfo[i]->mWidth;
|
|
colInfo[i]->mWeight = (delta <= 0)
|
|
? 1000000 // cols which have already reached their max get a large value
|
|
: ((float)colInfo[i]->mMaxWidth) / ((float)delta);
|
|
}
|
|
|
|
// sort the cols based on the weight so that in one pass cols with higher
|
|
// weights will get their max earlier than ones with lower weights
|
|
// This is an innefficient bubble sort, but unless there are an unlikely
|
|
// large number of cols, it is not an issue.
|
|
AC_Sort(colInfo, numConstrainedCols);
|
|
|
|
// compute the proportion to be added to each column, don't go beyond the col's
|
|
// max. This algorithm assumes that the Weight works as stated above
|
|
AC_Increase(numConstrainedCols, colInfo, sumMaxConstraints - sumMinConstraints,
|
|
availWidth, aPixelToTwips);
|
|
}
|
|
else { // reduce each col width
|
|
nscoord reduceWidth = maxMinDiff - aAvailWidth;
|
|
if (reduceWidth < 0) {
|
|
NS_ASSERTION(PR_TRUE, "AllocateConstrained called incorrectly");
|
|
AC_Wrapup(mTableFrame, numConstrainedCols, colInfo);
|
|
return;
|
|
}
|
|
for (i = 0; i < numConstrainedCols; i++) {
|
|
// the weight here is a relative metric for determining when cols reach their min.
|
|
// A col with a larger weight will reach its min before one with a smaller value.
|
|
nscoord delta = colInfo[i]->mWidth - colInfo[i]->mMinWidth;
|
|
colInfo[i]->mWeight = (delta <= 0)
|
|
? 1000000 // cols which have already reached their min get a large value
|
|
: ((float)colInfo[i]->mWidth) / ((float)delta);
|
|
}
|
|
|
|
// sort the cols based on the Weight
|
|
AC_Sort(colInfo, numConstrainedCols);
|
|
|
|
// compute the proportion to be subtracted from each column, don't go beyond
|
|
// the col's min. This algorithm assumes that the Weight works as stated above
|
|
AC_Decrease(numConstrainedCols, colInfo, sumMaxConstraints, reduceWidth, aPixelToTwips);
|
|
}
|
|
AC_Wrapup(mTableFrame, numConstrainedCols, colInfo);
|
|
}
|
|
|
|
// XXX this function will be improved after the colspan algorithms have been extracted
|
|
// from AssignNonPctColumnWidths and AssignPctColumnWidths. For now, pessimistic
|
|
// assumptions are made
|
|
PRBool BasicTableLayoutStrategy::ColumnsCanBeInvalidatedBy(nsStyleCoord* aPrevStyleWidth,
|
|
const nsTableCellFrame& aCellFrame) const
|
|
{
|
|
if (!mTableFrame)
|
|
return PR_TRUE;
|
|
|
|
const nsStylePosition* cellPosition;
|
|
aCellFrame.GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)cellPosition);
|
|
const nsStyleCoord& styleWidth = cellPosition->mWidth;
|
|
|
|
PRInt32 colIndex;
|
|
aCellFrame.GetColIndex(colIndex);
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colIndex);
|
|
if (!colFrame) return PR_FALSE;
|
|
nscoord colSpan = mTableFrame->GetEffectiveColSpan(aCellFrame);
|
|
|
|
if (aPrevStyleWidth) {
|
|
nsTableColFrame* colSpanFrame = colFrame;
|
|
// see if this cell is responsible for setting a fixed or percentage based col
|
|
for (PRInt32 span = 1; span <= colSpan; span++) {
|
|
if (!colSpanFrame) continue;
|
|
if (&aCellFrame == colSpanFrame->GetConstrainingCell())
|
|
return PR_TRUE; // assume that the style change will affect cols
|
|
if (span < colSpan)
|
|
colSpanFrame = mTableFrame->GetColFrame(colIndex + span);
|
|
}
|
|
// if we get here, the cell was not responsible for a fixed or percentage col
|
|
switch(aPrevStyleWidth->GetUnit()) {
|
|
case eStyleUnit_Percent:
|
|
if (eStyleUnit_Percent == styleWidth.GetUnit()) {
|
|
// PCT to PCT
|
|
if (aPrevStyleWidth->GetPercentValue() < styleWidth.GetPercentValue())
|
|
return PR_TRUE; // XXX see comments above
|
|
}
|
|
// PCT to FIX and PCT to AUTO changes have no effect since PCT allocations
|
|
// are the highest priority and the cell's previous PCT value did not
|
|
// cause it to be responsible for setting any cells PCT_ADJ
|
|
case eStyleUnit_Coord:
|
|
if (eStyleUnit_Percent == styleWidth.GetUnit()) {
|
|
// FIX to PCT
|
|
return PR_TRUE; // XXX see comments above
|
|
}
|
|
else if (eStyleUnit_Coord == styleWidth.GetUnit()) {
|
|
// FIX to FIX
|
|
nscoord newWidth = styleWidth.GetCoordValue();
|
|
if (aPrevStyleWidth->GetCoordValue() < newWidth) {
|
|
if (colSpan > 1)
|
|
return PR_TRUE; // XXX see comments above
|
|
if (newWidth > colFrame->GetFixWidth())
|
|
return PR_TRUE; // XXX see comments above
|
|
}
|
|
}
|
|
// FIX to AUTO results in no column changes here
|
|
case eStyleUnit_Auto:
|
|
if (eStyleUnit_Percent == styleWidth.GetUnit()) {
|
|
// AUTO to PCT
|
|
return PR_TRUE; // XXX see comments above
|
|
}
|
|
else if (eStyleUnit_Coord == styleWidth.GetUnit()) {
|
|
// AUTO to FIX
|
|
return PR_TRUE; // XXX see comments above
|
|
}
|
|
// AUTO to AUTO is not a style change
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
|
|
// XXX this function will be improved after the colspan algorithms have been extracted
|
|
// from AssignNonPctColumnWidths and AssignPctColumnWidths. For now, pessimistic
|
|
// assumptions are made
|
|
PRBool BasicTableLayoutStrategy::ColumnsCanBeInvalidatedBy(const nsTableCellFrame& aCellFrame,
|
|
PRBool aConsiderMinWidth) const
|
|
{
|
|
if (aConsiderMinWidth || !mTableFrame)
|
|
return PR_TRUE;
|
|
|
|
PRInt32 colIndex;
|
|
aCellFrame.GetColIndex(colIndex);
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colIndex);
|
|
if (!colFrame) return PR_FALSE;
|
|
nscoord colSpan = mTableFrame->GetEffectiveColSpan(aCellFrame);
|
|
|
|
// check to see if DES_CON can affect columns
|
|
nsTableColFrame* spanFrame = colFrame;
|
|
for (PRInt32 span = 0; span < colSpan; span++) {
|
|
if (!spanFrame) return PR_FALSE;
|
|
// see if the column width is constrained
|
|
if ((spanFrame->GetPctWidth() > 0) || (spanFrame->GetFixWidth() > 0) ||
|
|
(spanFrame->GetWidth(MIN_PRO) > 0)) {
|
|
if ((spanFrame->GetWidth(PCT_ADJ) > 0) && (spanFrame->GetWidth(PCT) <= 0)) {
|
|
return PR_TRUE;
|
|
}
|
|
if ((spanFrame->GetWidth(FIX_ADJ) > 0) && (spanFrame->GetWidth(FIX) <= 0)) {
|
|
return PR_TRUE; // its unfortunate that the balancing algorithms cause this
|
|
}
|
|
}
|
|
else {
|
|
return PR_TRUE; // XXX need to add cases if table has coord width specified
|
|
}
|
|
if (span < colSpan - 1)
|
|
spanFrame = mTableFrame->GetColFrame(colIndex + span + 1);
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRBool BasicTableLayoutStrategy::ColumnsAreValidFor(const nsTableCellFrame& aCellFrame,
|
|
nscoord aPrevCellMin,
|
|
nscoord aPrevCellDes) const
|
|
{
|
|
PRInt32 colIndex;
|
|
aCellFrame.GetColIndex(colIndex);
|
|
nsTableColFrame* colFrame = mTableFrame->GetColFrame(colIndex);
|
|
if (!colFrame) return PR_TRUE;
|
|
nscoord colSpan = mTableFrame->GetEffectiveColSpan(aCellFrame);
|
|
|
|
nscoord cellMin = aCellFrame.GetPass1MaxElementSize().width;
|
|
nscoord cellDes = aCellFrame.GetMaximumWidth();
|
|
nscoord colMin = colFrame->GetMinWidth();
|
|
nscoord colDes = colFrame->GetDesWidth();
|
|
|
|
PRBool minChanged = PR_TRUE;
|
|
if (((cellMin > aPrevCellMin) && (cellMin <= colMin)) ||
|
|
((cellMin <= aPrevCellMin) && (aPrevCellMin <= colMin))) {
|
|
minChanged = PR_FALSE;
|
|
}
|
|
if (minChanged) {
|
|
return PR_FALSE; // XXX add cases where table has coord width and cell is constrained
|
|
}
|
|
|
|
PRBool desChanged = PR_TRUE;
|
|
if (((cellDes > aPrevCellDes) && (cellDes <= colDes)) ||
|
|
(cellDes == aPrevCellDes)) {
|
|
// XXX This next check causes a problem if the cell's desired width shrinks,
|
|
// because the comparison (aPresCellDes <= colDes) will always be TRUE and
|
|
// so we always end up setting desChanged to PR_FALSE. That means the column
|
|
// won't shrink like it should
|
|
#if 0
|
|
|| ((cellDes < aPrevCellDes) && (aPrevCellDes <= colDes))) {
|
|
#endif
|
|
desChanged = PR_FALSE;
|
|
}
|
|
|
|
if (1 == colSpan) {
|
|
// see if the column width is constrained
|
|
if ((colFrame->GetPctWidth() > 0) || (colFrame->GetFixWidth() > 0) ||
|
|
(colFrame->GetWidth(MIN_PRO) > 0)) {
|
|
if ((colFrame->GetWidth(PCT_ADJ) > 0) && (colFrame->GetWidth(PCT) <= 0)) {
|
|
if (desChanged) {
|
|
return PR_FALSE; // XXX add cases where table has coord width
|
|
}
|
|
}
|
|
nscoord colFix = colFrame->GetWidth(FIX);
|
|
if ((colFrame->GetWidth(FIX_ADJ) > 0) && (colFix <= 0)) {
|
|
if (desChanged) {
|
|
return PR_FALSE; // its unfortunate that the balancing algorithms cause this
|
|
// XXX add cases where table has coord width
|
|
}
|
|
}
|
|
if ((colFix > 0) && (desChanged) && (cellDes < aPrevCellDes) && (aPrevCellDes == colFix)) {
|
|
return PR_FALSE;
|
|
}
|
|
}
|
|
else { // the column width is not constrained
|
|
if (desChanged) {
|
|
return PR_FALSE;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
return PR_FALSE; // XXX this needs a lot of cases
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
|
|
PRBool BasicTableLayoutStrategy::IsColumnInList(const PRInt32 colIndex,
|
|
PRInt32* colIndexes,
|
|
PRInt32 aNumFixedColumns)
|
|
{
|
|
PRBool result = PR_FALSE;
|
|
for (PRInt32 i = 0; i < aNumFixedColumns; i++) {
|
|
if (colIndex == colIndexes[i]) {
|
|
result = PR_TRUE;
|
|
break;
|
|
}
|
|
else if (colIndex<colIndexes[i]) {
|
|
break;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
PRBool BasicTableLayoutStrategy::ColIsSpecifiedAsMinimumWidth(PRInt32 aColIndex)
|
|
{
|
|
PRBool result = PR_FALSE;
|
|
nsTableColFrame* colFrame;
|
|
mTableFrame->GetColumnFrame(aColIndex, colFrame);
|
|
nsStyleCoord colStyleWidth = colFrame->GetStyleWidth();
|
|
switch (colStyleWidth.GetUnit()) {
|
|
case eStyleUnit_Coord:
|
|
if (0 == colStyleWidth.GetCoordValue()) {
|
|
result = PR_TRUE;
|
|
}
|
|
break;
|
|
case eStyleUnit_Percent:
|
|
{
|
|
// total hack for now for 0% and 1% specifications
|
|
// should compare percent to available parent width and see that it is below minimum
|
|
// for this column
|
|
float percent = colStyleWidth.GetPercentValue();
|
|
if (0.0f == percent || 0.01f == percent) {
|
|
result = PR_TRUE;
|
|
}
|
|
break;
|
|
}
|
|
case eStyleUnit_Proportional:
|
|
if (0 == colStyleWidth.GetIntValue()) {
|
|
result = PR_TRUE;
|
|
}
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
void BasicTableLayoutStrategy::Dump(PRInt32 aIndent)
|
|
{
|
|
char* indent = new char[aIndent + 1];
|
|
if (!indent) return;
|
|
for (PRInt32 i = 0; i < aIndent + 1; i++) {
|
|
indent[i] = ' ';
|
|
}
|
|
indent[aIndent] = 0;
|
|
|
|
printf("%s**START BASIC STRATEGY DUMP** table=%p cols=%X",
|
|
indent, mTableFrame, mCols);
|
|
printf("\n%s cellSpacing=%d propRatio=%.2f navQuirks=%d",
|
|
indent, mCellSpacingTotal, mMinToDesProportionRatio, mIsNavQuirksMode);
|
|
printf(" **END BASIC STRATEGY DUMP** \n");
|
|
delete [] indent;
|
|
}
|
|
|