pjs/layout/tables/nsCellMap.cpp

103 строки
2.6 KiB
C++
Исходник Обычный вид История

1998-04-14 00:24:54 +04:00
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsCRT.h"
#include "nsCellMap.h"
#include "nsTablePart.h"
#include <stdio.h>/* XXX */ // for printf
#ifdef NS_DEBUG
static PRBool gsDebug1 = PR_FALSE;
#else
static const PRBool gsDebug1 = PR_FALSE;
#endif
static PRInt32 gBytesPerPointer = sizeof(PRInt32);
nsCellMap::nsCellMap(int aRows, int aColumns)
: mRowCount(aRows),
mColCount(aColumns)
{
mCells = nsnull;
Reset(aRows, aColumns);
}
nsCellMap::~nsCellMap()
{
for (int i=0;i<mRowCount;i++)
{
for (int j=0;j<mColCount;j++)
{
int index = (i*mColCount)+j;
CellData* data = (CellData*)mCells[index];
if (data != nsnull)
{
delete data;
mCells[index] = 0;
}
}
}
delete [] mCells;
mCells = nsnull;
};
void nsCellMap::Reset(int aRows, int aColumns)
{
// needs to be more efficient, to reuse space if possible
if (nsnull!=mCells)
{
delete [] mCells;
mCells = nsnull;
}
mRowCount = aRows;
mColCount = aColumns;
mCells = new PRInt32 [mRowCount*mColCount*gBytesPerPointer];
nsCRT::memset (mCells, 0, (mRowCount*mColCount)*gBytesPerPointer);
}
void nsCellMap::GrowTo(int aColCount)
{
if (aColCount <= mColCount)
return;
PRInt32 * newCells = new PRInt32 [mRowCount*aColCount*gBytesPerPointer];
for (int rowIndex = 0; rowIndex < mRowCount; rowIndex++)
{
PRInt32* rowMap = (PRInt32*)&(newCells[rowIndex*aColCount]);
nsCRT::memset (rowMap, 0, aColCount*gBytesPerPointer);
nsCRT::memcpy(rowMap, &(mCells[rowIndex*mColCount]), mColCount*gBytesPerPointer);
}
if (mCells != nsnull)
delete [] mCells;
mCells = newCells;
mColCount = aColCount;
}
void nsCellMap::DumpCellMap() const
{
if (gsDebug1==PR_TRUE)
{
printf("Cell Map =\n");
for (int i=0;i<mRowCount;i++)
for (int j=0;j<mColCount;j++)
{
int index = (i*mColCount)+j;
printf("Cell [%d,%d] = %d for index = %d\n", i, j, mCells[index], index);
}
}
}