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selection.cpp
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110 lines (92 loc) · 1.93 KB
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/*
* KDiff3 - Text Diff And Merge Tool
*
* SPDX-FileCopyrightText: 2002-2011 Joachim Eibl, joachim.eibl at gmx.de
* SPDX-FileCopyrightText: 2018-2020 Michael Reeves reeves.87@gmail.com
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "selection.h"
#include "TypeUtils.h"
#include <QtGlobal>
#include <utility> // for swap
qint32 Selection::firstPosInLine(LineRef l) const
{
assert(firstLine.isValid());
LineRef l1 = firstLine;
LineRef l2 = lastLine;
qint32 p1 = firstPos;
qint32 p2 = lastPos;
if(l1 > l2)
{
std::swap(l1, l2);
std::swap(p1, p2);
}
if(l1 == l2 && p1 > p2)
{
std::swap(p1, p2);
}
if(l == l1)
return p1;
return 0;
}
qint32 Selection::lastPosInLine(LineRef l) const
{
assert(firstLine.isValid());
LineRef l1 = firstLine;
LineRef l2 = lastLine;
qint32 p1 = firstPos;
qint32 p2 = lastPos;
if(l1 > l2)
{
std::swap(l1, l2);
std::swap(p1, p2);
}
if(l1 == l2 && p1 > p2)
{
std::swap(p1, p2);
}
if(l == l2)
return p2;
return TYPE_MAX(qint32);
}
bool Selection::within(LineRef l, qint32 p) const
{
if(!firstLine.isValid())
return false;
LineRef l1 = firstLine;
LineRef l2 = lastLine;
int p1 = firstPos;
int p2 = lastPos;
if(l1 > l2)
{
std::swap(l1, l2);
std::swap(p1, p2);
}
if(l1 == l2 && p1 > p2)
{
std::swap(p1, p2);
}
if(l1 <= l && l <= l2)
{
if(l1 == l2)
return p >= p1 && p < p2;
if(l == l1)
return p >= p1;
if(l == l2)
return p < p2;
return true;
}
return false;
}
bool Selection::lineWithin(LineRef l) const
{
if(!firstLine.isValid())
return false;
LineRef l1 = firstLine;
LineRef l2 = lastLine;
if(l1 > l2)
{
std::swap(l1, l2);
}
return (l1 <= l && l <= l2);
}