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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include "simplerangelist.hxx"
#include "rangelst.hxx"
using ::std::list;
using ::std::pair;
using ::std::max;
ScSimpleRangeList::Range::Range(SCCOL nCol1, SCROW nRow1, SCCOL nCol2, SCROW nRow2) :
mnCol1(nCol1), mnRow1(nRow1), mnCol2(nCol2), mnRow2(nRow2) {}
ScSimpleRangeList::ScSimpleRangeList()
{
}
namespace {
bool maybeJoin(ScSimpleRangeList::Range& rOld, SCCOL nCol1, SCROW nRow1, SCCOL nCol2, SCROW nRow2)
{
if (rOld.mnRow1 == nRow1 && rOld.mnRow2 == nRow2)
{
// Check their column spans to see if they overlap.
if (rOld.mnCol1 == nCol1)
{
// Their share the start column position.
rOld.mnCol2 = max(rOld.mnCol2, nCol2);
return true;
}
else if (rOld.mnCol1 < nCol1)
{
// Old range sits on the left.
if (nCol1 - rOld.mnCol2 <= 1)
{
rOld.mnCol2 = max(rOld.mnCol2, nCol2);
return true;
}
}
else if (nCol1 < rOld.mnCol1)
{
// New range sits on the left.
if (nCol1 - rOld.mnCol2 <= 1)
{
rOld.mnCol1 = nCol1;
rOld.mnCol2 = max(rOld.mnCol2, nCol2);
return true;
}
}
}
if (rOld.mnCol1 == nCol1 && rOld.mnCol2 == nCol2)
{
if (rOld.mnRow1 == nRow1)
{
// Their share the start row position.
rOld.mnRow2 = max(rOld.mnRow2, nRow2);
return true;
}
else if (rOld.mnRow1 < nRow1)
{
// Old range sits above.
if (nRow1 - rOld.mnRow2 <= 1)
{
rOld.mnRow2 = max(rOld.mnRow2, nRow2);
return true;
}
}
else if (nRow1 < rOld.mnRow1)
{
// New range sits above.
if (nRow1 - rOld.mnRow2 <= 1)
{
rOld.mnRow1 = nRow1;
rOld.mnRow2 = max(rOld.mnRow2, nRow2);
return true;
}
}
}
return false;
}
}
void ScSimpleRangeList::addRange(const ScRange& rRange)
{
SCCOL nCol1 = rRange.aStart.Col();
SCROW nRow1 = rRange.aStart.Row();
SCTAB nTab1 = rRange.aStart.Tab();
SCCOL nCol2 = rRange.aEnd.Col();
SCROW nRow2 = rRange.aEnd.Row();
SCTAB nTab2 = rRange.aEnd.Tab();
for (SCTAB nTab = nTab1; nTab <= nTab2; ++nTab)
{
RangeListRef pRef = findTab(nTab);
if (!pRef)
// This should never happen!
return;
if (pRef->empty() || !maybeJoin(pRef->back(), nCol1, nRow1, nCol2, nRow2))
// Not joinable. Append it to the list.
pRef->push_back(Range(nCol1, nRow1, nCol2, nRow2));
}
}
void ScSimpleRangeList::insertCol(SCCOL nCol, SCTAB nTab)
{
RangeListRef pRef = findTab(nTab);
if (!pRef)
// This should never happen!
return;
list<Range>::iterator itr = pRef->begin(), itrEnd = pRef->end();
for (; itr != itrEnd; ++itr)
{
Range& r = *itr;
if (r.mnCol2 < nCol)
// insertion point to the right of the range.
continue;
if (nCol <= r.mnCol1)
{
// insertion point to the left of the range.
++r.mnCol1;
++r.mnCol2;
}
else if (nCol <= r.mnCol2)
{
// insertion point cuts through the range.
++r.mnCol2;
}
}
}
void ScSimpleRangeList::getRangeList(list<ScRange>& rList) const
{
list<ScRange> aList;
for (TabType::const_iterator itrTab = maTabs.begin(), itrTabEnd = maTabs.end(); itrTab != itrTabEnd; ++itrTab)
{
SCTAB nTab = itrTab->first;
const RangeListRef& pRanges = itrTab->second;
list<Range>::const_iterator itr = pRanges->begin(), itrEnd = pRanges->end();
for (; itr != itrEnd; ++itr)
{
const Range& r = *itr;
aList.push_back(ScRange(r.mnCol1, r.mnRow1, nTab, r.mnCol2, r.mnRow2, nTab));
}
}
rList.swap(aList);
}
void ScSimpleRangeList::clear()
{
maTabs.clear();
}
ScSimpleRangeList::RangeListRef ScSimpleRangeList::findTab(SCTAB nTab)
{
TabType::iterator itr = maTabs.find(nTab);
if (itr == maTabs.end())
{
RangeListRef p(new list<Range>);
pair<TabType::iterator, bool> r = maTabs.insert(TabType::value_type(nTab, p));
if (!r.second)
return RangeListRef();
itr = r.first;
}
return itr->second;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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