зеркало из https://github.com/mozilla/gecko-dev.git
822 строки
33 KiB
C++
822 строки
33 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 License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include <stdio.h>
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#include "BasicTableLayoutStrategy.h"
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#include "nsTableFrame.h"
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#include "nsColLayoutData.h"
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#include "nsCellLayoutData.h"
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#include "nsTableCol.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 "nsIPtr.h"
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NS_DEF_PTR(nsTableCol);
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NS_DEF_PTR(nsTableCell);
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NS_DEF_PTR(nsIStyleContext);
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static NS_DEFINE_IID(kStyleBorderSID, NS_STYLEBORDER_SID);
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static NS_DEFINE_IID(kStyleColorSID, NS_STYLECOLOR_SID);
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static NS_DEFINE_IID(kStylePositionSID, NS_STYLEPOSITION_SID);
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static NS_DEFINE_IID(kStyleSpacingSID, NS_STYLESPACING_SID);
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#ifdef NS_DEBUG
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static PRBool gsDebug = PR_FALSE;
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static PRBool gsDebugCLD = PR_FALSE;
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static PRBool gsTiming = PR_FALSE;
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static PRBool gsDebugMBP = PR_FALSE;
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#else
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static const PRBool gsDebug = PR_FALSE;
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static const PRBool gsDebugCLD = PR_FALSE;
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static const PRBool gsTiming = PR_FALSE;
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static const PRBool gsDebugMBP = PR_FALSE;
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#endif
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//ZZZ TOTAL HACK
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PRBool isTableAutoWidth = PR_TRUE;
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PRBool isAutoColumnWidths = PR_TRUE;
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PRBool TableIsAutoWidth()
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{ // ZZZ: TOTAL HACK
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return isTableAutoWidth;
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}
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PRBool AutoColumnWidths()
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{ // ZZZ: TOTAL HACK
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return isAutoColumnWidths;
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}
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BasicTableLayoutStrategy::BasicTableLayoutStrategy(nsTableFrame *aFrame)
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{
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mTableFrame = aFrame;
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}
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BasicTableLayoutStrategy::~BasicTableLayoutStrategy()
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{
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}
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PRBool BasicTableLayoutStrategy::BalanceColumnWidths(nsIPresContext* aPresContext,
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PRInt32 aMaxWidth,
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PRInt32 aNumCols,
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PRInt32 &aTotalFixedWidth,
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PRInt32 &aMinTableWidth,
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PRInt32 &aMaxTableWidth,
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nsSize* aMaxElementSize)
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{
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PRBool result = PR_TRUE;
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// Step 1 - assign the width of all fixed-width columns
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AssignFixedColumnWidths(aPresContext, aMaxWidth, aNumCols,
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aTotalFixedWidth, aMinTableWidth, aMaxTableWidth);
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if (nsnull!=aMaxElementSize)
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{
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aMaxElementSize->width = aMinTableWidth;
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if (gsDebug) printf(" setting aMaxElementSize->width = %d\n", aMaxElementSize->width);
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}
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else
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{
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if (gsDebug) printf(" nsnull aMaxElementSize\n");
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}
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// Step 2 - assign the width of all proportional-width columns in the remaining space
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PRInt32 availWidth = aMaxWidth - aTotalFixedWidth;
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if (gsDebug==PR_TRUE) printf ("Step 2...\n availWidth = %d\n", availWidth);
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if (TableIsAutoWidth())
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{
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if (gsDebug==PR_TRUE) printf (" calling BalanceProportionalColumnsForAutoWidthTable\n");
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result = BalanceProportionalColumnsForAutoWidthTable(aPresContext,
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availWidth, aMaxWidth,
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aMinTableWidth, aMaxTableWidth);
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}
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else
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{
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if (gsDebug==PR_TRUE) printf (" calling BalanceProportionalColumnsForSpecifiedWidthTable\n");
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result = BalanceProportionalColumnsForSpecifiedWidthTable(aPresContext,
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availWidth, aMaxWidth,
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aMinTableWidth, aMaxTableWidth);
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}
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return result;
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}
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/*
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STEP 1
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for every col
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if the col has a fixed width
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set the width to max(fixed width, maxElementSize)
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if the cell spans columns, divide the cell width between the columns
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else skip it for now
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take borders and padding into account
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STEP 2
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determine the min and max size for the table width
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if col is proportionately specified
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if (col width specified to 0)
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col width = minColWidth
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else if (minTableWidth >= aMaxSize.width)
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set col widths to min, install a hor. scroll bar
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else if (maxTableWidth <= aMaxSize.width)
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set each col to its max size
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else
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W = aMaxSize.width - minTableWidth
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D = maxTableWidth - minTableWidth
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for each col
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d = maxColWidth - minColWidth
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col width = minColWidth + ((d*W)/D)
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STEP 3
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if there is space left over
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for every col
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if col is proportionately specified
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add space to col width until it is that proportion of the table width
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do this non-destructively in case there isn't enough space
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if there isn't enough space as determined in the prior step,
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add space in proportion to the proportionate width attribute
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*/
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// Step 1 - assign the width of all fixed-width columns,
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// and calculate min/max table width
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PRBool BasicTableLayoutStrategy::AssignFixedColumnWidths(nsIPresContext* aPresContext,
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PRInt32 maxWidth,
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PRInt32 aNumCols,
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PRInt32 &aTotalFixedWidth,
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PRInt32 &aMinTableWidth,
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PRInt32 &aMaxTableWidth)
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{
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#ifdef DEBUG
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nsIFrame *tablePIF=nsnull;
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mTableFrame->GetPrevInFlow(tablePIF);
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NS_ASSERTION(nsnull==tablePIF, "never ever call me on a continuing frame!");
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#endif
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if (gsDebug==PR_TRUE) printf (" AssignFixedColumnWidths\n");
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nsVoidArray *spanList=nsnull;
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for (PRInt32 colIndex = 0; colIndex<aNumCols; colIndex++)
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{
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nsVoidArray *columnLayoutData = mTableFrame->GetColumnLayoutData();
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nsColLayoutData * colData = (nsColLayoutData *)(columnLayoutData->ElementAt(colIndex));
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NS_ASSERTION(nsnull != colData, "bad column data");
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nsTableColPtr col = colData->GetCol(); // col: ADDREF++
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NS_ASSERTION(col.IsNotNull(), "bad col");
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// need to track min/max column width for setting min/max table widths
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PRInt32 minColWidth = 0;
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PRInt32 maxColWidth = 0;
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nsVoidArray *cells = colData->GetCells();
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PRInt32 numCells = cells->Count();
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if (gsDebug==PR_TRUE) printf (" for column %d numCells = %d\n", colIndex, numCells);
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#if XXX_need_access_to_column_frame_help
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// Get the columns's style
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nsIStyleContextPtr colSC;
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colFrame->GetStyleContext(aPresContext, colSC.AssignRef());
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nsStylePosition* colPosition = (nsStylePosition*)
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colSC->GetData(kStylePositionSID);
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// Get column width if it has one
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PRBool haveColWidth = PR_FALSE;
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nscoord colWidth;
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switch (colPosition->mWidth.GetUnit()) {
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default:
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case eStyleUnit_Auto:
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case eStyleUnit_Inherit:
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break;
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case eStyleUnit_Coord:
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haveColWidth = PR_TRUE;
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colWidth = colPosition->mWidth.GetCoordValue;
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break;
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case eStyleUnit_Percent:
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case eStyleUnit_Proportional:
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//XXX haveColWidth = PR_TRUE;
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//XXX colWidth = colPosition->mWidthPCT * something;
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break;
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}
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#endif
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/* Scan the column, simulatneously assigning fixed column widths
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* and computing the min/max column widths
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*/
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// first, deal with any cells that span into this column from a pervious column
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if (nsnull!=spanList)
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{
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PRInt32 spanCount = spanList->Count();
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// go through the list backwards so we can delete easily
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for (PRInt32 spanIndex=spanCount-1; 0<=spanIndex; spanIndex--)
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{
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SpanInfo *spanInfo = (SpanInfo *)(spanList->ElementAt(spanIndex));
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if (minColWidth < spanInfo->cellMinWidth)
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minColWidth = spanInfo->cellMinWidth;
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if (maxColWidth < spanInfo->cellDesiredWidth)
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maxColWidth = spanInfo->cellDesiredWidth;
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spanInfo->span--;
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if (gsDebug==PR_TRUE)
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printf (" for spanning cell %d with remaining span=%d, min = %d and des = %d\n",
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spanIndex, spanInfo->span, spanInfo->cellMinWidth, spanInfo->cellDesiredWidth);
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if (0==spanInfo->span)
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{
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spanList->RemoveElementAt(spanIndex);
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delete spanInfo;
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}
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}
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}
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for (PRInt32 cellIndex = 0; cellIndex<numCells; cellIndex++)
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{
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nsCellLayoutData * data = (nsCellLayoutData *)(cells->ElementAt(cellIndex));
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NS_ASSERTION(nsnull != data, "bad data");
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nsSize * cellMinSize = data->GetMaxElementSize();
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nsReflowMetrics * cellDesiredSize = data->GetDesiredSize();
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NS_ASSERTION(nsnull != cellDesiredSize, "bad cellDesiredSize");
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PRInt32 colSpan = data->GetCellFrame()->GetColSpan();
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if (gsDebug==PR_TRUE)
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printf (" for cell %d with colspan=%d, min = %d,%d and des = %d,%d\n",
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cellIndex, colSpan, cellMinSize->width, cellMinSize->height,
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cellDesiredSize->width, cellDesiredSize->height);
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PRBool haveCellWidth = PR_FALSE;
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nscoord cellWidth;
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/*
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* The first cell in a column (in row 0) has special standing.
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* if the first cell has a width specification, it overrides the
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* COL width
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*/
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if (0==cellIndex)
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{
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nsCellLayoutData * data = (nsCellLayoutData *)(cells->ElementAt(0));
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nsTableCellFrame *cellFrame = data->GetCellFrame();
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nsTableCellPtr cell;
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cellFrame->GetContent((nsIContent*&)(cell.AssignRef())); // cell: REFCNT++
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// Get the cell's style
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nsIStyleContextPtr cellSC;
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cellFrame->GetStyleContext(aPresContext, cellSC.AssignRef());
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nsStylePosition* cellPosition = (nsStylePosition*)
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cellSC->GetData(kStylePositionSID);
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switch (cellPosition->mWidth.GetUnit()) {
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case eStyleUnit_Coord:
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haveCellWidth = PR_TRUE;
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cellWidth = cellPosition->mWidth.GetCoordValue();
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break;
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case eStyleUnit_Percent:
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case eStyleUnit_Proportional:
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// XXX write me when pct/proportional are supported
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// XXX haveCellWidth = PR_TRUE;
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// XXX cellWidth = cellPosition->mWidth;
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break;
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default:
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case eStyleUnit_Inherit:
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case eStyleUnit_Auto:
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break;
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}
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}
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#if XXX_need_access_to_column_frame_help
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switch (colPosition->mWidth.GetUnit()) {
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default:
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case eStyleUnit_Auto:
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case eStyleUnit_Inherit:
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break;
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case eStyleUnit_Coord:
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{
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// This col has a fixed width, so set the cell's width to the
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// larger of (specified width, largest max_element_size of the
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// cells in the column)
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PRInt32 widthForThisCell = max(cellMinSize->width, colPosition->mWidth.GetCoordValue());
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if (mTableFrame->GetColumnWidth(colIndex) < widthForThisCell)
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{
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if (gsDebug) printf (" setting fixed width to %d\n",widthForThisCell);
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mTableFrame->SetColumnWidth(colIndex, widthForThisCell);
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maxColWidth = widthForThisCell;
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}
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}
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break;
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case NS_STYLE_POSITION_VALUE_PCT:
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case NS_STYLE_POSITION_VALUE_PROPORTIONAL:
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// XXX write me when pct/proportional are supported
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break;
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}
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#endif
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// regardless of the width specification, keep track of the
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// min/max column widths
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PRInt32 cellMinWidth = cellMinSize->width/colSpan;
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PRInt32 cellDesiredWidth = cellDesiredSize->width/colSpan;
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if (minColWidth < cellMinWidth)
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minColWidth = cellMinWidth;
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if (maxColWidth < cellDesiredWidth)
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maxColWidth = cellDesiredWidth;
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if (1<colSpan)
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{
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// add the cell to our list of spanners
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SpanInfo *spanInfo = new SpanInfo(colSpan-1, cellMinWidth, cellDesiredWidth);
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if (nsnull==spanList)
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spanList = new nsVoidArray();
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spanList->AppendElement(spanInfo);
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}
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if (gsDebug) {
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printf (" after cell %d, minColWidth = %d and maxColWidth = %d\n",
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cellIndex, minColWidth, maxColWidth);
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}
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}
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#if 0
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// if the col is fixed-width, expand the col to the specified
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// fixed width if necessary
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if (colStyle->fixedWidth > mTableFrame->GetColumnWidth(colIndex))
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mTableFrame->SetColumnWidth(colIndex, colStyle->fixedWidth);
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// keep a running total of the amount of space taken up by all
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// fixed-width columns
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aTotalFixedWidth += mTableFrame->GetColumnWidths(colIndex);
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if (gsDebug) {
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printf (" after col %d, aTotalFixedWidth = %d\n",
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colIndex, aTotalFixedWidth);
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}
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#endif
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// add col[i] metrics to the running totals for the table min/max width
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if (NS_UNCONSTRAINEDSIZE!=aMinTableWidth)
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aMinTableWidth += minColWidth; // SEC: insets!
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if (aMinTableWidth<=0)
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aMinTableWidth = NS_UNCONSTRAINEDSIZE; // handle overflow
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if (NS_UNCONSTRAINEDSIZE!=aMaxTableWidth)
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aMaxTableWidth += maxColWidth; // SEC: insets!
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if (aMaxTableWidth<=0)
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aMaxTableWidth = NS_UNCONSTRAINEDSIZE; // handle overflow
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if (gsDebug==PR_TRUE)
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printf (" after this col, minTableWidth = %d and maxTableWidth = %d\n", aMinTableWidth, aMaxTableWidth);
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} // end Step 1 for fixed-width columns
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if (nsnull!=spanList)
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delete spanList;
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return PR_TRUE;
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}
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PRBool BasicTableLayoutStrategy::BalanceProportionalColumnsForSpecifiedWidthTable(nsIPresContext* aPresContext,
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PRInt32 aAvailWidth,
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PRInt32 aMaxWidth,
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PRInt32 aMinTableWidth,
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PRInt32 aMaxTableWidth)
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{
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#ifdef DEBUG
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nsIFrame *tablePIF=nsnull;
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mTableFrame->GetPrevInFlow(tablePIF);
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NS_ASSERTION(nsnull==tablePIF, "never ever call me on a continuing frame!");
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#endif
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PRBool result = PR_TRUE;
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if (NS_UNCONSTRAINEDSIZE==aMaxWidth)
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{ // the max width of the table fits comfortably in the available space
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if (gsDebug) printf (" * table laying out in NS_UNCONSTRAINEDSIZE, calling BalanceColumnsTableFits\n");
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result = BalanceColumnsTableFits(aPresContext, aAvailWidth);
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}
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else if (aMinTableWidth > aMaxWidth)
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{ // the table doesn't fit in the available space
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if (gsDebug) printf (" * min table does not fit, calling SetColumnsToMinWidth\n");
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result = SetColumnsToMinWidth(aPresContext);
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}
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else if (aMaxTableWidth <= aMaxWidth)
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{ // the max width of the table fits comfortably in the available space
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if (gsDebug) printf (" * table desired size fits, calling BalanceColumnsTableFits\n");
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result = BalanceColumnsTableFits(aPresContext, aAvailWidth);
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}
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else
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{ // the table fits somewhere between its min and desired size
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if (gsDebug) printf (" * table desired size does not fit, calling BalanceColumnsConstrained\n");
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result = BalanceColumnsConstrained(aPresContext, aAvailWidth,
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aMaxWidth, aMinTableWidth, aMaxTableWidth);
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}
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return result;
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}
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PRBool BasicTableLayoutStrategy::BalanceProportionalColumnsForAutoWidthTable( nsIPresContext* aPresContext,
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PRInt32 aAvailWidth,
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PRInt32 aMaxWidth,
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PRInt32 aMinTableWidth,
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PRInt32 aMaxTableWidth)
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{
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PRBool result = PR_TRUE;
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if (NS_UNCONSTRAINEDSIZE==aMaxWidth)
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{ // the max width of the table fits comfortably in the available space
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if (gsDebug) printf (" * table laying out in NS_UNCONSTRAINEDSIZE, calling BalanceColumnsTableFits\n");
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result = BalanceColumnsTableFits(aPresContext, aAvailWidth);
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}
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else if (aMinTableWidth > aMaxWidth)
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{ // the table doesn't fit in the available space
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if (gsDebug) printf (" * min table does not fit, calling SetColumnsToMinWidth\n");
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result = SetColumnsToMinWidth(aPresContext);
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}
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else if (aMaxTableWidth <= aMaxWidth)
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{ // the max width of the table fits comfortably in the available space
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if (gsDebug) printf (" * table desired size fits, calling BalanceColumnsTableFits\n");
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result = BalanceColumnsTableFits(aPresContext, aAvailWidth);
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}
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else
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{ // the table fits somewhere between its min and desired size
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if (gsDebug) printf (" * table desired size does not fit, calling BalanceColumnsConstrained\n");
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result = BalanceColumnsConstrained(aPresContext, aAvailWidth,
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aMaxWidth, aMinTableWidth, aMaxTableWidth);
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}
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return result;
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}
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PRBool BasicTableLayoutStrategy::SetColumnsToMinWidth(nsIPresContext* aPresContext)
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{
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PRBool result = PR_TRUE;
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nsVoidArray *columnLayoutData = mTableFrame->GetColumnLayoutData();
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PRInt32 numCols = columnLayoutData->Count();
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for (PRInt32 colIndex = 0; colIndex<numCols; colIndex++)
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{
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nsColLayoutData * colData = (nsColLayoutData *)(columnLayoutData->ElementAt(colIndex));
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nsTableColPtr col = colData->GetCol(); // col: ADDREF++
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nsVoidArray *cells = colData->GetCells();
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PRInt32 minColWidth = 0;
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PRInt32 maxColWidth = 0;
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PRInt32 numCells = cells->Count();
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if (gsDebug==PR_TRUE) printf (" for col %d\n", colIndex);
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// XXX need column frame to ask this question
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nsStylePosition* colPosition = nsnull;
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if (PR_TRUE==mTableFrame->IsProportionalWidth(colPosition))
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{
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for (PRInt32 cellIndex = 0; cellIndex<numCells; cellIndex++)
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{ // this col has proportional width, so determine its width requirements
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nsCellLayoutData * data = (nsCellLayoutData *)(cells->ElementAt(cellIndex));
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NS_ASSERTION(nsnull != data, "bad data");
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nsSize * cellMinSize = data->GetMaxElementSize();
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NS_ASSERTION(nsnull != cellMinSize, "bad cellMinSize");
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nsReflowMetrics * cellDesiredSize = data->GetDesiredSize();
|
|
NS_ASSERTION(nsnull != cellDesiredSize, "bad cellDesiredSize");
|
|
if (minColWidth < cellMinSize->width)
|
|
minColWidth = cellMinSize->width;
|
|
if (maxColWidth < cellDesiredSize->width)
|
|
maxColWidth = cellDesiredSize->width;
|
|
/*
|
|
if (gsDebug==PR_TRUE)
|
|
printf (" after cell %d, minColWidth = %d and maxColWidth = %d\n",
|
|
cellIndex, minColWidth, maxColWidth);
|
|
*/
|
|
}
|
|
|
|
if (gsDebug==PR_TRUE)
|
|
{
|
|
printf (" for determining width of col %d %s:\n",
|
|
colIndex, mTableFrame->IsProportionalWidth(colPosition)? "(P)":"(A)");
|
|
printf (" minColWidth = %d and maxColWidth = %d\n", minColWidth, maxColWidth);
|
|
}
|
|
|
|
// XXX BUG: why are we asking this again? this if is already in a
|
|
// IsProportionalWidth == PR_TRUE case!
|
|
if (PR_TRUE==mTableFrame->IsProportionalWidth(colPosition))
|
|
{ // this col has proportional width, so set its width based on the table width
|
|
mTableFrame->SetColumnWidth(colIndex, minColWidth);
|
|
if (gsDebug==PR_TRUE)
|
|
printf (" 2: col %d, set to width = %d\n", colIndex, mTableFrame->GetColumnWidth(colIndex));
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
PRBool BasicTableLayoutStrategy::BalanceColumnsTableFits(nsIPresContext* aPresContext,
|
|
PRInt32 aAvailWidth)
|
|
{
|
|
#ifdef DEBUG
|
|
nsIFrame *tablePIF=nsnull;
|
|
mTableFrame->GetPrevInFlow(tablePIF);
|
|
NS_ASSERTION(nsnull==tablePIF, "never ever call me on a continuing frame!");
|
|
#endif
|
|
|
|
PRBool result = PR_TRUE;
|
|
nsVoidArray *spanList=nsnull;
|
|
nsVoidArray *columnLayoutData = mTableFrame->GetColumnLayoutData();
|
|
PRInt32 numCols = columnLayoutData->Count();
|
|
for (PRInt32 colIndex = 0; colIndex<numCols; colIndex++)
|
|
{
|
|
nsColLayoutData * colData = (nsColLayoutData *)(columnLayoutData->ElementAt(colIndex));
|
|
nsTableColPtr col = colData->GetCol(); // col: ADDREF++
|
|
nsVoidArray *cells = colData->GetCells();
|
|
PRInt32 minColWidth = 0;
|
|
PRInt32 maxColWidth = 0;
|
|
PRInt32 numCells = cells->Count();
|
|
if (gsDebug==PR_TRUE) printf (" for col %d\n", colIndex);
|
|
|
|
// XXX Need columnFrame to ask the style question
|
|
nsStylePosition* colPosition = nsnull;
|
|
|
|
if (PR_TRUE==mTableFrame->IsProportionalWidth(colPosition))
|
|
{
|
|
// first, deal with any cells that span into this column from a pervious column
|
|
if (nsnull!=spanList)
|
|
{
|
|
PRInt32 spanCount = spanList->Count();
|
|
// go through the list backwards so we can delete easily
|
|
for (PRInt32 spanIndex=spanCount-1; 0<=spanIndex; spanIndex--)
|
|
{
|
|
SpanInfo *spanInfo = (SpanInfo *)(spanList->ElementAt(spanIndex));
|
|
if (minColWidth < spanInfo->cellMinWidth)
|
|
minColWidth = spanInfo->cellMinWidth;
|
|
if (maxColWidth < spanInfo->cellDesiredWidth)
|
|
maxColWidth = spanInfo->cellDesiredWidth;
|
|
spanInfo->span--;
|
|
if (gsDebug==PR_TRUE)
|
|
printf (" for spanning cell %d with remaining span=%d, min = %d and des = %d\n",
|
|
spanIndex, spanInfo->span, spanInfo->cellMinWidth, spanInfo->cellDesiredWidth);
|
|
if (0==spanInfo->span)
|
|
{
|
|
spanList->RemoveElementAt(spanIndex);
|
|
delete spanInfo;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (PRInt32 cellIndex = 0; cellIndex<numCells; cellIndex++)
|
|
{ // this col has proportional width, so determine its width requirements
|
|
nsCellLayoutData * data = (nsCellLayoutData *)(cells->ElementAt(cellIndex));
|
|
NS_ASSERTION(nsnull != data, "bad data");
|
|
|
|
PRInt32 colSpan = data->GetCellFrame()->GetColSpan();
|
|
// distribute a portion of the spanning cell's min and max width to this column
|
|
nsSize * cellMinSize = data->GetMaxElementSize();
|
|
NS_ASSERTION(nsnull != cellMinSize, "bad cellMinSize");
|
|
nsReflowMetrics * cellDesiredSize = data->GetDesiredSize();
|
|
NS_ASSERTION(nsnull != cellDesiredSize, "bad cellDesiredSize");
|
|
PRInt32 cellMinWidth = cellMinSize->width/colSpan;
|
|
PRInt32 cellDesiredWidth = cellDesiredSize->width/colSpan;
|
|
if (PR_TRUE==gsDebug)
|
|
printf("factoring in cell %d with colSpan=%d\n factoring in min=%d and desired=%d\n",
|
|
cellIndex, colSpan, cellMinWidth, cellDesiredWidth);
|
|
if (minColWidth < cellMinWidth)
|
|
minColWidth = cellMinWidth;
|
|
if (maxColWidth < cellDesiredWidth)
|
|
maxColWidth = cellDesiredWidth;
|
|
if (gsDebug==PR_TRUE)
|
|
printf (" after cell %d, minColWidth = %d and maxColWidth = %d\n",
|
|
cellIndex, minColWidth, maxColWidth);
|
|
if (1<colSpan)
|
|
{ // add the cell to our list of spanners
|
|
SpanInfo *spanInfo = new SpanInfo(colSpan-1, cellMinWidth, cellDesiredWidth);
|
|
if (nsnull==spanList)
|
|
spanList = new nsVoidArray();
|
|
spanList->AppendElement(spanInfo);
|
|
}
|
|
}
|
|
|
|
if (gsDebug==PR_TRUE)
|
|
{
|
|
printf (" for determining width of col %d %s:\n",
|
|
colIndex, mTableFrame->IsProportionalWidth(colPosition)? "(P)":"(A)");
|
|
printf (" minColWidth = %d and maxColWidth = %d\n", minColWidth, maxColWidth);
|
|
printf (" aAvailWidth = %d\n", aAvailWidth);
|
|
}
|
|
|
|
// XXX BUG: why are we asking this again? this if is already in a
|
|
// IsProportionalWidth == PR_TRUE case!
|
|
if (PR_TRUE==mTableFrame->IsProportionalWidth(colPosition))
|
|
{ // this col has proportional width, so set its width based on the table width
|
|
#if XXX_bug_kipp_about_this
|
|
if (0==colStyle->proportionalWidth)
|
|
{ // col width is specified to be the minimum
|
|
mTableFrame->SetColumnWidth(colIndex, minColWidth);
|
|
if (gsDebug==PR_TRUE)
|
|
printf (" 3 (0): col %d set to min width = %d because style set proportionalWidth=0\n",
|
|
colIndex, mTableFrame->GetColumnWidth(colIndex));
|
|
}
|
|
else // BUG? else? other code below has the else
|
|
#endif
|
|
if (PR_TRUE==AutoColumnWidths())
|
|
{ // give each remaining column it's desired width
|
|
// if there is width left over, we'll factor that in after this loop is complete
|
|
mTableFrame->SetColumnWidth(colIndex, maxColWidth);
|
|
if (gsDebug==PR_TRUE)
|
|
printf (" 3a: col %d with availWidth %d, set to width = %d\n",
|
|
colIndex, aAvailWidth, mTableFrame->GetColumnWidth(colIndex));
|
|
}
|
|
else
|
|
{ // give each remaining column an equal percentage of the remaining space
|
|
PRInt32 percentage = -1;
|
|
if (NS_UNCONSTRAINEDSIZE==aAvailWidth)
|
|
{
|
|
mTableFrame->SetColumnWidth(colIndex, maxColWidth);
|
|
}
|
|
else
|
|
{
|
|
#if XXX_bug_kipp_about_this
|
|
percentage = colStyle->proportionalWidth;
|
|
if (-1==percentage)
|
|
#endif
|
|
percentage = 100/numCols;
|
|
mTableFrame->SetColumnWidth(colIndex, (percentage*aAvailWidth)/100);
|
|
// if the column was computed to be too small, enlarge the column
|
|
if (mTableFrame->GetColumnWidth(colIndex) <= minColWidth)
|
|
mTableFrame->SetColumnWidth(colIndex, minColWidth);
|
|
}
|
|
if (gsDebug==PR_TRUE)
|
|
printf (" 3b: col %d given %d percent of availWidth %d, set to width = %d\n",
|
|
colIndex, percentage, aAvailWidth, mTableFrame->GetColumnWidth(colIndex));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (nsnull!=spanList)
|
|
delete spanList;
|
|
return result;
|
|
}
|
|
|
|
PRBool BasicTableLayoutStrategy::BalanceColumnsConstrained( nsIPresContext* aPresContext,
|
|
PRInt32 aAvailWidth,
|
|
PRInt32 aMaxWidth,
|
|
PRInt32 aMinTableWidth,
|
|
PRInt32 aMaxTableWidth)
|
|
{
|
|
#ifdef DEBUG
|
|
nsIFrame *tablePIF=nsnull;
|
|
mTableFrame->GetPrevInFlow(tablePIF);
|
|
NS_ASSERTION(nsnull==tablePIF, "never ever call me on a continuing frame!");
|
|
#endif
|
|
|
|
PRBool result = PR_TRUE;
|
|
PRInt32 maxOfAllMinColWidths = 0;
|
|
nsVoidArray *spanList=nsnull;
|
|
nsVoidArray *columnLayoutData = mTableFrame->GetColumnLayoutData();
|
|
PRInt32 numCols = columnLayoutData->Count();
|
|
for (PRInt32 colIndex = 0; colIndex<numCols; colIndex++)
|
|
{
|
|
nsColLayoutData * colData = (nsColLayoutData *)(columnLayoutData->ElementAt(colIndex));
|
|
nsTableColPtr col = colData->GetCol(); // col: ADDREF++
|
|
|
|
#if XXX_bug_kipp_about_this
|
|
// XXX BUG: mStyleContext is for the table frame not for the column.
|
|
nsStyleMolecule* colStyle =
|
|
(nsStyleMolecule*)mStyleContext->GetData(kStyleMoleculeSID);
|
|
#else
|
|
nsStylePosition* colPosition = nsnull;
|
|
#endif
|
|
|
|
nsVoidArray *cells = colData->GetCells();
|
|
PRInt32 minColWidth = 0;
|
|
PRInt32 maxColWidth = 0;
|
|
PRInt32 numCells = cells->Count();
|
|
if (gsDebug==PR_TRUE) printf (" for col %d\n", colIndex);
|
|
|
|
if (PR_TRUE==mTableFrame->IsProportionalWidth(colPosition))
|
|
{
|
|
// first, deal with any cells that span into this column from a pervious column
|
|
if (nsnull!=spanList)
|
|
{
|
|
PRInt32 spanCount = spanList->Count();
|
|
// go through the list backwards so we can delete easily
|
|
for (PRInt32 spanIndex=spanCount-1; 0<=spanIndex; spanIndex--)
|
|
{
|
|
SpanInfo *spanInfo = (SpanInfo *)(spanList->ElementAt(spanIndex));
|
|
if (minColWidth < spanInfo->cellMinWidth)
|
|
minColWidth = spanInfo->cellMinWidth;
|
|
if (maxColWidth < spanInfo->cellDesiredWidth)
|
|
maxColWidth = spanInfo->cellDesiredWidth;
|
|
spanInfo->span--;
|
|
if (gsDebug==PR_TRUE)
|
|
printf (" for spanning cell %d with remaining span=%d, min = %d and des = %d\n",
|
|
spanIndex, spanInfo->span, spanInfo->cellMinWidth, spanInfo->cellDesiredWidth);
|
|
if (0==spanInfo->span)
|
|
{
|
|
spanList->RemoveElementAt(spanIndex);
|
|
delete spanInfo;
|
|
}
|
|
}
|
|
}
|
|
for (PRInt32 cellIndex = 0; cellIndex<numCells; cellIndex++)
|
|
{ // this col has proportional width, so determine its width requirements
|
|
nsCellLayoutData * data = (nsCellLayoutData *)(cells->ElementAt(cellIndex));
|
|
NS_ASSERTION(nsnull != data, "bad data");
|
|
PRInt32 colSpan = data->GetCellFrame()->GetColSpan();
|
|
nsSize * cellMinSize = data->GetMaxElementSize();
|
|
NS_ASSERTION(nsnull != cellMinSize, "bad cellMinSize");
|
|
nsReflowMetrics * cellDesiredSize = data->GetDesiredSize();
|
|
NS_ASSERTION(nsnull != cellDesiredSize, "bad cellDesiredSize");
|
|
PRInt32 cellMinWidth = cellMinSize->width/colSpan;
|
|
PRInt32 cellDesiredWidth = cellDesiredSize->width/colSpan;
|
|
if (minColWidth < cellMinWidth)
|
|
minColWidth = cellMinWidth;
|
|
if (maxColWidth < cellDesiredWidth)
|
|
maxColWidth = cellDesiredWidth;
|
|
if (1<colSpan)
|
|
{
|
|
// add the cell to our list of spanners
|
|
SpanInfo *spanInfo = new SpanInfo(colSpan-1, cellMinWidth, cellDesiredWidth);
|
|
if (nsnull==spanList)
|
|
spanList = new nsVoidArray();
|
|
spanList->AppendElement(spanInfo);
|
|
}
|
|
if (gsDebug==PR_TRUE)
|
|
printf (" after cell %d, minColWidth = %d and maxColWidth = %d\n",
|
|
cellIndex, minColWidth, maxColWidth);
|
|
}
|
|
|
|
if (gsDebug==PR_TRUE)
|
|
{
|
|
printf (" for determining width of col %d %s:\n",
|
|
colIndex, mTableFrame->IsProportionalWidth(colPosition)? "(P)":"(A)");
|
|
printf (" minTableWidth = %d and maxTableWidth = %d\n", aMinTableWidth, aMaxTableWidth);
|
|
printf (" minColWidth = %d and maxColWidth = %d\n", minColWidth, maxColWidth);
|
|
printf (" aAvailWidth = %d\n", aAvailWidth);
|
|
}
|
|
|
|
// XXX BUG: why are we asking this again? this if is already in a
|
|
// IsProportionalWidth == PR_TRUE case!
|
|
if (PR_TRUE==mTableFrame->IsProportionalWidth(colPosition))
|
|
{ // this col has proportional width, so set its width based on the table width
|
|
// the table fits in the space somewhere between its min and max size
|
|
// so dole out the available space appropriately
|
|
#if XXX_bug_kipp_about_this
|
|
if (0==colStyle->proportionalWidth)
|
|
{ // col width is specified to be the minimum
|
|
mTableFrame->SetColumnWidth(colIndex, minColWidth);
|
|
if (gsDebug==PR_TRUE)
|
|
printf (" 4 (0): col %d set to min width = %d because style set proportionalWidth=0\n",
|
|
colIndex, mTableFrame->GetColumnWidth(colIndex));
|
|
}
|
|
else
|
|
#endif
|
|
if (AutoColumnWidths())
|
|
{
|
|
PRInt32 W = aMaxWidth - aMinTableWidth;
|
|
PRInt32 D = aMaxTableWidth - aMinTableWidth;
|
|
PRInt32 d = maxColWidth - minColWidth;
|
|
mTableFrame->SetColumnWidth(colIndex, minColWidth + ((d*W)/D));
|
|
if (gsDebug==PR_TRUE)
|
|
printf (" 4 auto-width: col %d W=%d D=%d d=%d, set to width = %d\n",
|
|
colIndex, W, D, d, mTableFrame->GetColumnWidth(colIndex));
|
|
}
|
|
else
|
|
{ // give each remaining column an equal percentage of the remaining space
|
|
#if XXX_bug_kipp_about_this
|
|
PRInt32 percentage = colStyle->proportionalWidth;
|
|
if (-1==percentage)
|
|
#endif
|
|
PRInt32 percentage = 100/numCols;
|
|
mTableFrame->SetColumnWidth(colIndex, (percentage*aAvailWidth)/100);
|
|
// if the column was computed to be too small, enlarge the column
|
|
if (mTableFrame->GetColumnWidth(colIndex) <= minColWidth)
|
|
{
|
|
mTableFrame->SetColumnWidth(colIndex, minColWidth);
|
|
if (maxOfAllMinColWidths < minColWidth)
|
|
maxOfAllMinColWidths = minColWidth;
|
|
}
|
|
if (gsDebug==PR_TRUE)
|
|
{
|
|
printf (" 4 equal width: col %d given %d percent of availWidth %d, set to width = %d\n",
|
|
colIndex, percentage, aAvailWidth, mTableFrame->GetColumnWidth(colIndex));
|
|
if (0!=maxOfAllMinColWidths)
|
|
printf(" and setting maxOfAllMins to %d\n", maxOfAllMinColWidths);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// post-process if necessary
|
|
|
|
// if columns have equal width, and some column's content couldn't squeeze into the computed size,
|
|
// then expand every column to the min size of the column with the largest min size
|
|
if (!AutoColumnWidths() && 0!=maxOfAllMinColWidths)
|
|
{
|
|
if (gsDebug==PR_TRUE) printf(" EqualColWidths specified, so setting all col widths to %d\n", maxOfAllMinColWidths);
|
|
for (PRInt32 colIndex = 0; colIndex<numCols; colIndex++)
|
|
mTableFrame->SetColumnWidth(colIndex, maxOfAllMinColWidths);
|
|
}
|
|
|
|
if (nsnull!=spanList)
|
|
delete spanList;
|
|
|
|
return result;
|
|
}
|
|
|
|
|