office-gobmx/include/tools/gen.hxx
Mike Kaganski 7e23fec4b7 Introduce 'scale' to Point/Size/Rectangle, to simplify anisotropic scaling
Change-Id: I12c25838e8eec8d05e43b593790847c626edde31
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/124638
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
2021-11-03 12:50:06 +01:00

784 lines
24 KiB
C++

/* -*- 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 .
*/
#ifndef INCLUDED_TOOLS_GEN_HXX
#define INCLUDED_TOOLS_GEN_HXX
#include <tools/toolsdllapi.h>
#include <tools/long.hxx>
#include <tools/degree.hxx>
#include <limits.h>
#include <algorithm>
#include <ostream>
#include <config_options.h>
#include <o3tl/unit_conversion.hxx>
class SvStream;
namespace rtl
{
class OString;
}
enum TriState { TRISTATE_FALSE, TRISTATE_TRUE, TRISTATE_INDET };
// Pair
class SAL_WARN_UNUSED Pair
{
public:
constexpr Pair() : nA(0), nB(0) {}
constexpr Pair( tools::Long _nA, tools::Long _nB ) : nA(_nA), nB(_nB) {}
tools::Long A() const { return nA; }
tools::Long B() const { return nB; }
tools::Long& A() { return nA; }
tools::Long& B() { return nB; }
TOOLS_DLLPUBLIC rtl::OString toString() const;
protected:
tools::Long nA;
tools::Long nB;
};
namespace tools::detail {
// Used to implement operator == for subclasses of Pair:
inline bool equal(Pair const & p1, Pair const & p2)
{
return p1.A() == p2.A() && p1.B() == p2.B();
}
}
// Point
class Size;
class SAL_WARN_UNUSED UNLESS_MERGELIBS(SAL_DLLPUBLIC_EXPORT) Point final : protected Pair
{
public:
constexpr Point() {}
constexpr Point( tools::Long nX, tools::Long nY ) : Pair( nX, nY ) {}
constexpr tools::Long X() const { return nA; }
constexpr tools::Long Y() const { return nB; }
void Move( tools::Long nHorzMove, tools::Long nVertMove );
void Move( Size const & s );
tools::Long AdjustX( tools::Long nHorzMove ) { nA += nHorzMove; return nA; }
tools::Long AdjustY( tools::Long nVertMove ) { nB += nVertMove; return nB; }
void RotateAround( tools::Long& rX, tools::Long& rY, Degree10 nOrientation ) const;
void RotateAround( Point&, Degree10 nOrientation ) const;
Point& operator += ( const Point& rPoint );
Point& operator -= ( const Point& rPoint );
Point& operator *= ( const tools::Long nVal );
Point& operator /= ( const tools::Long nVal );
friend inline Point operator+( const Point &rVal1, const Point &rVal2 );
friend inline Point operator-( const Point &rVal1, const Point &rVal2 );
friend inline Point operator*( const Point &rVal1, const tools::Long nVal2 );
friend inline Point operator/( const Point &rVal1, const tools::Long nVal2 );
constexpr tools::Long getX() const { return X(); }
constexpr tools::Long getY() const { return Y(); }
void setX(tools::Long nX) { nA = nX; }
void setY(tools::Long nY) { nB = nY; }
Pair const & toPair() const { return *this; }
Pair & toPair() { return *this; }
// Scales relative to 0,0
constexpr inline Point scale(sal_Int64 nMulX, sal_Int64 nDivX,
sal_Int64 nMulY, sal_Int64 nDivY) const;
using Pair::toString;
};
inline void Point::Move( tools::Long nHorzMove, tools::Long nVertMove )
{
nA += nHorzMove;
nB += nVertMove;
}
inline Point& Point::operator += ( const Point& rPoint )
{
nA += rPoint.nA;
nB += rPoint.nB;
return *this;
}
inline Point& Point::operator -= ( const Point& rPoint )
{
nA -= rPoint.nA;
nB -= rPoint.nB;
return *this;
}
inline Point& Point::operator *= ( const tools::Long nVal )
{
nA *= nVal;
nB *= nVal;
return *this;
}
inline Point& Point::operator /= ( const tools::Long nVal )
{
nA /= nVal;
nB /= nVal;
return *this;
}
inline Point operator+( const Point &rVal1, const Point &rVal2 )
{
return Point( rVal1.nA+rVal2.nA, rVal1.nB+rVal2.nB );
}
inline Point operator-( const Point &rVal1, const Point &rVal2 )
{
return Point( rVal1.nA-rVal2.nA, rVal1.nB-rVal2.nB );
}
inline Point operator*( const Point &rVal1, const tools::Long nVal2 )
{
return Point( rVal1.nA*nVal2, rVal1.nB*nVal2 );
}
inline Point operator/( const Point &rVal1, const tools::Long nVal2 )
{
return Point( rVal1.nA/nVal2, rVal1.nB/nVal2 );
}
inline bool operator ==(Point const & p1, Point const & p2)
{
return tools::detail::equal(p1.toPair(), p2.toPair());
}
inline bool operator !=(Point const & p1, Point const & p2)
{
return !(p1 == p2);
}
constexpr inline Point Point::scale(sal_Int64 nMulX, sal_Int64 nDivX, sal_Int64 nMulY, sal_Int64 nDivY) const
{
return Point(o3tl::convert(getX(), nMulX, nDivX),
o3tl::convert(getY(), nMulY, nDivY));
}
namespace o3tl
{
constexpr Point convert(const Point& rPoint, o3tl::Length eFrom, o3tl::Length eTo)
{
const auto [num, den] = o3tl::getConversionMulDiv(eFrom, eTo);
return rPoint.scale(num, den, num, den);
}
} // end o3tl
template< typename charT, typename traits >
inline std::basic_ostream<charT, traits> & operator <<(
std::basic_ostream<charT, traits> & stream, const Point& point )
{
return stream << point.X() << ',' << point.Y();
}
// Size
class SAL_WARN_UNUSED Size final : protected Pair
{
public:
constexpr Size() {}
constexpr Size( tools::Long nWidth, tools::Long nHeight ) : Pair( nWidth, nHeight ) {}
constexpr tools::Long Width() const { return nA; }
constexpr tools::Long Height() const { return nB; }
tools::Long AdjustWidth( tools::Long n ) { nA += n; return nA; }
tools::Long AdjustHeight( tools::Long n ) { nB += n; return nB; }
constexpr tools::Long getWidth() const { return Width(); }
constexpr tools::Long getHeight() const { return Height(); }
void setWidth(tools::Long nWidth) { nA = nWidth; }
void setHeight(tools::Long nHeight) { nB = nHeight; }
bool IsEmpty() const { return nA <= 0 || nB <= 0; }
void extendBy(tools::Long x, tools::Long y)
{
nA += x;
nB += y;
}
Pair const & toPair() const { return *this; }
Pair & toPair() { return *this; }
using Pair::toString;
Size& operator += ( const Size& rSize );
Size& operator -= ( const Size& rSize );
Size& operator *= ( const tools::Long nVal );
Size& operator /= ( const tools::Long nVal );
friend inline Size operator+( const Size &rVal1, const Size &rVal2 );
friend inline Size operator-( const Size &rVal1, const Size &rVal2 );
friend inline Size operator*( const Size &rVal1, const tools::Long nVal2 );
friend inline Size operator/( const Size &rVal1, const tools::Long nVal2 );
constexpr inline Size scale(sal_Int64 nMulX, sal_Int64 nDivX,
sal_Int64 nMulY, sal_Int64 nDivY) const;
};
inline bool operator ==(Size const & s1, Size const & s2)
{
return tools::detail::equal(s1.toPair(), s2.toPair());
}
inline bool operator !=(Size const & s1, Size const & s2)
{
return !(s1 == s2);
}
inline Size& Size::operator += ( const Size& rSize )
{
nA += rSize.nA;
nB += rSize.nB;
return *this;
}
inline Size& Size::operator -= ( const Size& rSize )
{
nA -= rSize.nA;
nB -= rSize.nB;
return *this;
}
inline Size& Size::operator *= ( const tools::Long nVal )
{
nA *= nVal;
nB *= nVal;
return *this;
}
inline Size& Size::operator /= ( const tools::Long nVal )
{
nA /= nVal;
nB /= nVal;
return *this;
}
inline Size operator+( const Size &rVal1, const Size &rVal2 )
{
return Size( rVal1.nA+rVal2.nA, rVal1.nB+rVal2.nB );
}
inline Size operator-( const Size &rVal1, const Size &rVal2 )
{
return Size( rVal1.nA-rVal2.nA, rVal1.nB-rVal2.nB );
}
inline Size operator*( const Size &rVal1, const tools::Long nVal2 )
{
return Size( rVal1.nA*nVal2, rVal1.nB*nVal2 );
}
inline Size operator/( const Size &rVal1, const tools::Long nVal2 )
{
return Size( rVal1.nA/nVal2, rVal1.nB/nVal2 );
}
constexpr inline Size Size::scale(sal_Int64 nMulX, sal_Int64 nDivX,
sal_Int64 nMulY, sal_Int64 nDivY) const
{
return Size(o3tl::convert(Width(), nMulX, nDivX),
o3tl::convert(Height(), nMulY, nDivY));
}
namespace o3tl
{
constexpr Size convert(const Size& rSize, o3tl::Length eFrom, o3tl::Length eTo)
{
const auto [num, den] = o3tl::getConversionMulDiv(eFrom, eTo);
return rSize.scale(num, den, num, den);
}
} // end o3tl
template< typename charT, typename traits >
inline std::basic_ostream<charT, traits> & operator <<(
std::basic_ostream<charT, traits> & stream, const Size& size )
{
return stream << size.Width() << 'x' << size.Height();
}
inline void Point::Move( Size const & s )
{
AdjustX(s.Width());
AdjustY(s.Height());
}
// Range
#define RANGE_MAX LONG_MAX
class SAL_WARN_UNUSED Range final : protected Pair
{
public:
constexpr Range() {}
constexpr Range( tools::Long nMin, tools::Long nMax ) : Pair( nMin, nMax ) {}
tools::Long Min() const { return nA; }
tools::Long Max() const { return nB; }
tools::Long Len() const { return nB - nA + 1; }
tools::Long& Min() { return nA; }
tools::Long& Max() { return nB; }
bool Contains( tools::Long nIs ) const;
void Justify();
Pair const & toPair() const { return *this; }
Pair & toPair() { return *this; }
using Pair::toString;
};
inline bool Range::Contains( tools::Long nIs ) const
{
return ((nA <= nIs) && (nIs <= nB ));
}
inline void Range::Justify()
{
if ( nA > nB )
{
tools::Long nHelp = nA;
nA = nB;
nB = nHelp;
}
}
inline bool operator ==(Range const & r1, Range const & r2)
{
return tools::detail::equal(r1.toPair(), r2.toPair());
}
inline bool operator !=(Range const & r1, Range const & r2)
{
return !(r1 == r2);
}
template< typename charT, typename traits >
inline std::basic_ostream<charT, traits> & operator <<(
std::basic_ostream<charT, traits> & stream, const Range& range )
{
return stream << range.Min() << '-' << range.Max();
}
// Selection
#define SELECTION_MIN LONG_MIN
#define SELECTION_MAX LONG_MAX
class SAL_WARN_UNUSED Selection final : protected Pair
{
public:
Selection() {}
Selection( tools::Long nPos ) : Pair( nPos, nPos ) {}
Selection( tools::Long nMin, tools::Long nMax ) : Pair( nMin, nMax ) {}
tools::Long Min() const { return nA; }
tools::Long Max() const { return nB; }
tools::Long Len() const { return nB - nA; }
tools::Long& Min() { return nA; }
tools::Long& Max() { return nB; }
bool Contains( tools::Long nIs ) const;
void Justify();
bool operator !() const { return !Len(); }
tools::Long getMin() const { return Min(); }
void setMin(tools::Long nMin) { Min() = nMin; }
void setMax(tools::Long nMax) { Max() = nMax; }
Pair const & toPair() const { return *this; }
Pair & toPair() { return *this; }
using Pair::toString;
};
inline bool Selection::Contains( tools::Long nIs ) const
{
return ((nA <= nIs) && (nIs < nB ));
}
inline void Selection::Justify()
{
if ( nA > nB )
{
tools::Long nHelp = nA;
nA = nB;
nB = nHelp;
}
}
inline bool operator ==(Selection const & s1, Selection const & s2)
{
return tools::detail::equal(s1.toPair(), s2.toPair());
}
inline bool operator !=(Selection const & s1, Selection const & s2)
{
return !(s1 == s2);
}
template< typename charT, typename traits >
inline std::basic_ostream<charT, traits> & operator <<(
std::basic_ostream<charT, traits> & stream, const Selection& selection )
{
return stream << selection.Min() << '-' << selection.Max();
}
// Rectangle
#define RECT_MAX LONG_MAX
#define RECT_MIN LONG_MIN
/// Note: this class is a true marvel of engineering: because the author
/// could not decide whether it's better to have a closed or half-open
/// interval, they just implemented *both* in the same class!
///
/// If you have the misfortune of having to use this class, don't immediately
/// despair but first take note that the uppercase GetWidth() / GetHeight()
/// etc. methods interpret the interval as closed, while the lowercase
/// getWidth() / getHeight() etc. methods interpret the interval as half-open.
/// Ok, now is the time for despair.
namespace tools
{
class SAL_WARN_UNUSED TOOLS_DLLPUBLIC Rectangle final
{
static constexpr short RECT_EMPTY = -32767;
public:
constexpr Rectangle() = default;
constexpr Rectangle( const Point& rLT, const Point& rRB );
constexpr Rectangle( tools::Long nLeft, tools::Long nTop,
tools::Long nRight, tools::Long nBottom );
/// Constructs an empty Rectangle, with top/left at the specified params
constexpr Rectangle( tools::Long nLeft, tools::Long nTop );
constexpr Rectangle( const Point& rLT, const Size& rSize );
inline constexpr static Rectangle Justify(const Point& rLT, const Point& rRB);
constexpr tools::Long Left() const { return nLeft; }
constexpr tools::Long Right() const { return IsWidthEmpty() ? nLeft : nRight; }
constexpr tools::Long Top() const { return nTop; }
constexpr tools::Long Bottom() const { return IsHeightEmpty() ? nTop : nBottom; }
constexpr void SetLeft(tools::Long v) { nLeft = v; }
constexpr void SetRight(tools::Long v) { nRight = v; }
constexpr void SetTop(tools::Long v) { nTop = v; }
constexpr void SetBottom(tools::Long v) { nBottom = v; }
constexpr Point TopLeft() const { return { Left(), Top() }; }
constexpr Point TopRight() const { return { Right(), Top() }; }
constexpr Point TopCenter() const { return { (Left() + Right()) / 2, Top() }; }
constexpr Point BottomLeft() const { return { Left(), Bottom() }; }
constexpr Point BottomRight() const { return { Right(), Bottom() }; }
constexpr Point BottomCenter() const { return { (Left() + Right()) / 2, Bottom() }; }
constexpr Point LeftCenter() const { return { Left(), (Top() + Bottom()) / 2 }; }
constexpr Point RightCenter() const { return { Right(), (Top() + Bottom()) / 2 }; }
constexpr Point Center() const { return { (Left() + Right()) / 2, (Top() + Bottom()) / 2 }; }
/// Move the top and left edges by a delta, preserving width and height
inline void Move( tools::Long nHorzMoveDelta, tools::Long nVertMoveDelta );
void Move( Size const & s ) { Move(s.Width(), s.Height()); }
tools::Long AdjustLeft( tools::Long nHorzMoveDelta ) { nLeft += nHorzMoveDelta; return nLeft; }
tools::Long AdjustRight( tools::Long nHorzMoveDelta );
tools::Long AdjustTop( tools::Long nVertMoveDelta ) { nTop += nVertMoveDelta; return nTop; }
tools::Long AdjustBottom( tools::Long nVertMoveDelta );
/// Set the left edge of the rectangle to x, preserving the width
inline void SetPosX(tools::Long x);
/// Set the top edge of the rectangle to y, preserving the height
inline void SetPosY(tools::Long y);
inline void SetPos( const Point& rPoint );
void SetSize( const Size& rSize );
constexpr Size GetSize() const { return { GetWidth(), GetHeight() }; }
/// Returns the difference between right and left, assuming the range is inclusive.
constexpr tools::Long GetWidth() const
{
tools::Long n = 0;
if (!IsWidthEmpty())
{
n = nRight - nLeft;
if (n < 0)
n--;
else
n++;
}
return n;
}
/// Returns the difference between bottom and top, assuming the range is inclusive.
constexpr tools::Long GetHeight() const
{
tools::Long n = 0;
if (!IsHeightEmpty())
{
n = nBottom - nTop;
if (n < 0)
n--;
else
n++;
}
return n;
}
tools::Rectangle& Union( const tools::Rectangle& rRect );
tools::Rectangle& Intersection( const tools::Rectangle& rRect );
inline tools::Rectangle GetUnion( const tools::Rectangle& rRect ) const;
inline tools::Rectangle GetIntersection( const tools::Rectangle& rRect ) const;
void Justify();
bool Contains( const Point& rPOINT ) const;
bool Contains( const tools::Rectangle& rRect ) const;
bool Overlaps( const tools::Rectangle& rRect ) const;
void SetEmpty() { nRight = nBottom = RECT_EMPTY; }
void SetWidthEmpty() { nRight = RECT_EMPTY; }
void SetHeightEmpty() { nBottom = RECT_EMPTY; }
constexpr bool IsEmpty() const { return IsWidthEmpty() || IsHeightEmpty(); }
constexpr bool IsWidthEmpty() const { return nRight == RECT_EMPTY; }
constexpr bool IsHeightEmpty() const { return nBottom == RECT_EMPTY; }
inline bool operator == ( const tools::Rectangle& rRect ) const;
inline bool operator != ( const tools::Rectangle& rRect ) const;
inline tools::Rectangle& operator += ( const Point& rPt );
inline tools::Rectangle& operator -= ( const Point& rPt );
friend inline tools::Rectangle operator + ( const tools::Rectangle& rRect, const Point& rPt );
friend inline tools::Rectangle operator - ( const tools::Rectangle& rRect, const Point& rPt );
tools::Long getX() const { return nLeft; }
tools::Long getY() const { return nTop; }
/// Returns the difference between right and left, assuming the range includes one end, but not the other.
tools::Long getWidth() const { return Right() - Left(); }
/// Returns the difference between bottom and top, assuming the range includes one end, but not the other.
tools::Long getHeight() const { return Bottom() - Top(); }
void setWidth( tools::Long n ) { nRight = nLeft + n; }
void setHeight( tools::Long n ) { nBottom = nTop + n; }
/// Returns the string representation of the rectangle, format is "x, y, width, height".
rtl::OString toString() const;
/**
* Expands the rectangle in all directions by the input value.
*/
void expand(tools::Long nExpandBy);
void shrink(tools::Long nShrinkBy);
/**
* Sanitizing variants for handling data from the outside
*/
void SaturatingSetSize(const Size& rSize);
void SaturatingSetPosX(tools::Long x);
void SaturatingSetPosY(tools::Long y);
// Scales relative to 0,0
constexpr inline tools::Rectangle scale(sal_Int64 nMulX, sal_Int64 nDivX,
sal_Int64 nMulY, sal_Int64 nDivY) const;
private:
tools::Long nLeft = 0;
tools::Long nTop = 0;
tools::Long nRight = RECT_EMPTY;
tools::Long nBottom = RECT_EMPTY;
};
}
constexpr inline tools::Rectangle::Rectangle( const Point& rLT, const Point& rRB )
: Rectangle(rLT.X(), rLT.Y(), rRB.X(), rRB.Y())
{}
constexpr inline tools::Rectangle::Rectangle( tools::Long _nLeft, tools::Long _nTop,
tools::Long _nRight, tools::Long _nBottom )
: nLeft( _nLeft )
, nTop( _nTop )
, nRight( _nRight )
, nBottom( _nBottom )
{}
constexpr inline tools::Rectangle::Rectangle( tools::Long _nLeft, tools::Long _nTop )
: nLeft(_nLeft)
, nTop(_nTop)
{}
constexpr inline tools::Rectangle::Rectangle( const Point& rLT, const Size& rSize )
: nLeft( rLT.X())
, nTop( rLT.Y())
, nRight(rSize.Width() ? nLeft + (rSize.Width() + (rSize.Width() > 0 ? -1 : 1)) : RECT_EMPTY)
, nBottom(rSize.Height() ? nTop + (rSize.Height() + (rSize.Height() > 0 ? -1 : 1)) : RECT_EMPTY)
{}
constexpr inline tools::Rectangle tools::Rectangle::Justify(const Point& rLT, const Point& rRB)
{
const std::pair<tools::Long, tools::Long> aLeftRight = std::minmax(rLT.X(), rRB.X());
const std::pair<tools::Long, tools::Long> aTopBottom = std::minmax(rLT.Y(), rRB.Y());
return { aLeftRight.first, aTopBottom.first, aLeftRight.second, aTopBottom.second };
}
inline void tools::Rectangle::Move( tools::Long nHorzMove, tools::Long nVertMove )
{
nLeft += nHorzMove;
nTop += nVertMove;
if (!IsWidthEmpty())
nRight += nHorzMove;
if (!IsHeightEmpty())
nBottom += nVertMove;
}
inline void tools::Rectangle::SetPosX(tools::Long x)
{
if (!IsWidthEmpty())
nRight += x - nLeft;
nLeft = x;
}
inline void tools::Rectangle::SetPosY(tools::Long y)
{
if (!IsHeightEmpty())
nBottom += y - nTop;
nTop = y;
}
inline void tools::Rectangle::SetPos( const Point& rPoint )
{
SetPosX(rPoint.X());
SetPosY(rPoint.Y());
}
inline tools::Rectangle tools::Rectangle::GetUnion( const tools::Rectangle& rRect ) const
{
tools::Rectangle aTmpRect( *this );
return aTmpRect.Union( rRect );
}
inline tools::Rectangle tools::Rectangle::GetIntersection( const tools::Rectangle& rRect ) const
{
tools::Rectangle aTmpRect( *this );
return aTmpRect.Intersection( rRect );
}
inline bool tools::Rectangle::operator == ( const tools::Rectangle& rRect ) const
{
return (nLeft == rRect.nLeft ) &&
(nTop == rRect.nTop ) &&
(nRight == rRect.nRight ) &&
(nBottom == rRect.nBottom );
}
inline bool tools::Rectangle::operator != ( const tools::Rectangle& rRect ) const
{
return (nLeft != rRect.nLeft ) ||
(nTop != rRect.nTop ) ||
(nRight != rRect.nRight ) ||
(nBottom != rRect.nBottom );
}
inline tools::Rectangle& tools::Rectangle::operator +=( const Point& rPt )
{
Move(rPt.X(), rPt.Y());
return *this;
}
inline tools::Rectangle& tools::Rectangle::operator -= ( const Point& rPt )
{
Move(-rPt.X(), -rPt.Y());
return *this;
}
namespace tools
{
inline Rectangle operator + ( const Rectangle& rRect, const Point& rPt )
{
return Rectangle{ rRect }.operator+=(rPt);
}
inline Rectangle operator - ( const Rectangle& rRect, const Point& rPt )
{
return Rectangle{ rRect }.operator-=(rPt);
}
}
constexpr inline tools::Rectangle tools::Rectangle::scale(sal_Int64 nMulX, sal_Int64 nDivX,
sal_Int64 nMulY, sal_Int64 nDivY) const
{
// 1. Create an empty rectangle with correct left and top
tools::Rectangle aRect(o3tl::convert(Left(), nMulX, nDivX),
o3tl::convert(Top(), nMulY, nDivY));
// 2. If source has width/height, set respective right and bottom
if (!IsWidthEmpty())
aRect.SetRight(o3tl::convert(Right(), nMulX, nDivX));
if (!IsHeightEmpty())
aRect.SetBottom(o3tl::convert(Bottom(), nMulY, nDivY));
return aRect;
}
namespace o3tl
{
constexpr tools::Rectangle convert(const tools::Rectangle& rRectangle, o3tl::Length eFrom, o3tl::Length eTo)
{
const auto [num, den] = o3tl::getConversionMulDiv(eFrom, eTo);
return rRectangle.scale(num, den, num, den);
}
} // end o3tl
namespace tools
{
template< typename charT, typename traits >
inline std::basic_ostream<charT, traits> & operator <<(
std::basic_ostream<charT, traits> & stream, const tools::Rectangle& rectangle )
{
if (rectangle.IsEmpty())
return stream << "EMPTY";
else
return stream << rectangle.GetWidth() << 'x' << rectangle.GetHeight()
<< "@(" << rectangle.getX() << ',' << rectangle.getY() << ")";
}
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */