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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 <vcl/mapmod.hxx>
#include <tools/gen.hxx>
#include <tools/fract.hxx>
#include <tools/stream.hxx>
#include <tools/vcompat.hxx>
#include <tools/debug.hxx>
struct MapMode::ImplMapMode
{
sal_uLong mnRefCount;
MapUnit meUnit;
Point maOrigin;
// NOTE: these Fraction must NOT have more than 32 bits precision
// because ReadFraction / WriteFraction do only 32 bits, so more than
// that cannot be stored in MetaFiles!
// => call ReduceInaccurate whenever setting these
Fraction maScaleX;
Fraction maScaleY;
bool mbSimple;
friend SvStream& ReadImplMapMode(SvStream& rIStm, ImplMapMode& rMapMode);
friend SvStream& WriteImplMapMode(SvStream& rOStm, const ImplMapMode& rMapMode);
static ImplMapMode* ImplGetStaticMapMode( MapUnit eUnit );
ImplMapMode();
ImplMapMode(const ImplMapMode& rImpMapMode);
};
MapMode::ImplMapMode::ImplMapMode() :
maOrigin( 0, 0 ),
maScaleX( 1, 1 ),
maScaleY( 1, 1 )
{
mnRefCount = 1;
meUnit = MAP_PIXEL;
mbSimple = false;
}
MapMode::ImplMapMode::ImplMapMode( const ImplMapMode& rImplMapMode ) :
maOrigin( rImplMapMode.maOrigin ),
maScaleX( rImplMapMode.maScaleX ),
maScaleY( rImplMapMode.maScaleY )
{
mnRefCount = 1;
meUnit = rImplMapMode.meUnit;
mbSimple = false;
}
SvStream& ReadImplMapMode(SvStream& rIStm, MapMode::ImplMapMode& rImplMapMode)
{
VersionCompat aCompat( rIStm, StreamMode::READ );
sal_uInt16 nTmp16;
rIStm.ReadUInt16( nTmp16 ); rImplMapMode.meUnit = (MapUnit) nTmp16;
ReadPair( rIStm, rImplMapMode.maOrigin );
ReadFraction( rIStm, rImplMapMode.maScaleX );
ReadFraction( rIStm, rImplMapMode.maScaleY );
rIStm.ReadCharAsBool( rImplMapMode.mbSimple );
return rIStm;
}
SvStream& WriteImplMapMode(SvStream& rOStm, const MapMode::ImplMapMode& rImplMapMode)
{
VersionCompat aCompat( rOStm, StreamMode::WRITE, 1 );
rOStm.WriteUInt16( rImplMapMode.meUnit );
WritePair( rOStm, rImplMapMode.maOrigin );
WriteFraction( rOStm, rImplMapMode.maScaleX );
WriteFraction( rOStm, rImplMapMode.maScaleY );
rOStm.WriteBool( rImplMapMode.mbSimple );
return rOStm;
}
MapMode::ImplMapMode *
MapMode::ImplMapMode::ImplGetStaticMapMode(MapUnit eUnit)
{
static long aStaticImplMapModeAry[(MAP_LASTENUMDUMMY)*sizeof(ImplMapMode)/sizeof(long)];
// #i19496 check for out-of-bounds
if( eUnit >= MAP_LASTENUMDUMMY )
return reinterpret_cast<ImplMapMode*>(aStaticImplMapModeAry);
ImplMapMode* pImplMapMode = reinterpret_cast<ImplMapMode*>(aStaticImplMapModeAry)+eUnit;
if ( !pImplMapMode->mbSimple )
{
Fraction aDefFraction( 1, 1 );
pImplMapMode->maScaleX = aDefFraction;
pImplMapMode->maScaleY = aDefFraction;
pImplMapMode->meUnit = eUnit;
pImplMapMode->mbSimple = true;
}
return pImplMapMode;
}
inline void MapMode::ImplMakeUnique()
{
// If there are other references, copy
if ( mpImplMapMode->mnRefCount != 1 )
{
if ( mpImplMapMode->mnRefCount )
mpImplMapMode->mnRefCount--;
mpImplMapMode = new ImplMapMode( *mpImplMapMode );
}
}
MapMode::MapMode()
{
mpImplMapMode = ImplMapMode::ImplGetStaticMapMode( MAP_PIXEL );
}
MapMode::MapMode( const MapMode& rMapMode )
{
DBG_ASSERT( rMapMode.mpImplMapMode->mnRefCount < 0xFFFFFFFE, "MapMode: RefCount overflow" );
// Take over Shared Instance Data and increment refcount
mpImplMapMode = rMapMode.mpImplMapMode;
// RefCount == 0 for static objects
if ( mpImplMapMode->mnRefCount )
mpImplMapMode->mnRefCount++;
}
MapMode::MapMode( MapUnit eUnit )
{
mpImplMapMode = ImplMapMode::ImplGetStaticMapMode( eUnit );
}
MapMode::MapMode( MapUnit eUnit, const Point& rLogicOrg,
const Fraction& rScaleX, const Fraction& rScaleY )
{
mpImplMapMode = new ImplMapMode;
mpImplMapMode->meUnit = eUnit;
mpImplMapMode->maOrigin = rLogicOrg;
mpImplMapMode->maScaleX = rScaleX;
mpImplMapMode->maScaleY = rScaleY;
mpImplMapMode->maScaleX.ReduceInaccurate(32);
mpImplMapMode->maScaleY.ReduceInaccurate(32);
}
MapMode::~MapMode()
{
// If it's not static ImpData and it's the last reference, delete it,
// else decrement refcounter
if ( mpImplMapMode->mnRefCount )
{
if ( mpImplMapMode->mnRefCount == 1 )
delete mpImplMapMode;
else
mpImplMapMode->mnRefCount--;
}
}
void MapMode::SetMapUnit( MapUnit eUnit )
{
ImplMakeUnique();
mpImplMapMode->meUnit = eUnit;
}
void MapMode::SetOrigin( const Point& rLogicOrg )
{
ImplMakeUnique();
mpImplMapMode->maOrigin = rLogicOrg;
}
void MapMode::SetScaleX( const Fraction& rScaleX )
{
ImplMakeUnique();
mpImplMapMode->maScaleX = rScaleX;
mpImplMapMode->maScaleX.ReduceInaccurate(32);
}
void MapMode::SetScaleY( const Fraction& rScaleY )
{
ImplMakeUnique();
mpImplMapMode->maScaleY = rScaleY;
mpImplMapMode->maScaleY.ReduceInaccurate(32);
}
MapMode& MapMode::operator=( const MapMode& rMapMode )
{
DBG_ASSERT( rMapMode.mpImplMapMode->mnRefCount < 0xFFFFFFFE, "MapMode: RefCount overflow" );
// First increment refcount so that we can reference ourselves
// RefCount == 0 for static objects
if ( rMapMode.mpImplMapMode->mnRefCount )
rMapMode.mpImplMapMode->mnRefCount++;
// If it's not static ImpData and it's the last reference, delete it,
// else decrement refcounter
if ( mpImplMapMode->mnRefCount )
{
if ( mpImplMapMode->mnRefCount == 1 )
delete mpImplMapMode;
else
mpImplMapMode->mnRefCount--;
}
mpImplMapMode = rMapMode.mpImplMapMode;
return *this;
}
bool MapMode::operator==( const MapMode& rMapMode ) const
{
if ( mpImplMapMode == rMapMode.mpImplMapMode )
return true;
if ( (mpImplMapMode->meUnit == rMapMode.mpImplMapMode->meUnit) &&
(mpImplMapMode->maOrigin == rMapMode.mpImplMapMode->maOrigin) &&
(mpImplMapMode->maScaleX == rMapMode.mpImplMapMode->maScaleX) &&
(mpImplMapMode->maScaleY == rMapMode.mpImplMapMode->maScaleY) )
return true;
else
return false;
}
bool MapMode::IsDefault() const
{
ImplMapMode* pDefMapMode = ImplMapMode::ImplGetStaticMapMode( MAP_PIXEL );
if ( mpImplMapMode == pDefMapMode )
return true;
if ( (mpImplMapMode->meUnit == pDefMapMode->meUnit) &&
(mpImplMapMode->maOrigin == pDefMapMode->maOrigin) &&
(mpImplMapMode->maScaleX == pDefMapMode->maScaleX) &&
(mpImplMapMode->maScaleY == pDefMapMode->maScaleY) )
return true;
else
return false;
}
SvStream& ReadMapMode( SvStream& rIStm, MapMode& rMapMode )
{
rMapMode.ImplMakeUnique();
return ReadImplMapMode( rIStm, *rMapMode.mpImplMapMode );
}
SvStream& WriteMapMode( SvStream& rOStm, const MapMode& rMapMode )
{
return WriteImplMapMode( rOStm, *rMapMode.mpImplMapMode );
}
MapUnit MapMode::GetMapUnit() const { return mpImplMapMode->meUnit; }
const Point& MapMode::GetOrigin() const { return mpImplMapMode->maOrigin; }
const Fraction& MapMode::GetScaleX() const { return mpImplMapMode->maScaleX; }
const Fraction& MapMode::GetScaleY() const { return mpImplMapMode->maScaleY; }
bool MapMode::IsSimple() const { return mpImplMapMode->mbSimple; }
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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