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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 <tools/stream.hxx>
#include <tools/vcompat.hxx>
#include <tools/debug.hxx>
#include <tools/gen.hxx>
#include <vcl/gradient.hxx>
Impl_Gradient::Impl_Gradient() :
maStartColor( COL_BLACK ),
maEndColor( COL_WHITE )
{
mnRefCount = 1;
meStyle = GradientStyle_LINEAR;
mnAngle = 0;
mnBorder = 0;
mnOfsX = 50;
mnOfsY = 50;
mnIntensityStart = 100;
mnIntensityEnd = 100;
mnStepCount = 0;
}
Impl_Gradient::Impl_Gradient( const Impl_Gradient& rImplGradient ) :
maStartColor( rImplGradient.maStartColor ),
maEndColor( rImplGradient.maEndColor )
{
mnRefCount = 1;
meStyle = rImplGradient.meStyle;
mnAngle = rImplGradient.mnAngle;
mnBorder = rImplGradient.mnBorder;
mnOfsX = rImplGradient.mnOfsX;
mnOfsY = rImplGradient.mnOfsY;
mnIntensityStart = rImplGradient.mnIntensityStart;
mnIntensityEnd = rImplGradient.mnIntensityEnd;
mnStepCount = rImplGradient.mnStepCount;
}
void Gradient::MakeUnique()
{
// If there are still other references, copy
if ( mpImplGradient->mnRefCount != 1 )
{
if( mpImplGradient->mnRefCount )
mpImplGradient->mnRefCount--;
mpImplGradient = new Impl_Gradient( *mpImplGradient );
}
}
Gradient::Gradient()
{
mpImplGradient = new Impl_Gradient;
}
Gradient::Gradient( const Gradient& rGradient )
{
// Take over instance data and increment refcount
mpImplGradient = rGradient.mpImplGradient;
mpImplGradient->mnRefCount++;
}
Gradient::Gradient( GradientStyle eStyle,
const Color& rStartColor, const Color& rEndColor )
{
mpImplGradient = new Impl_Gradient;
mpImplGradient->meStyle = eStyle;
mpImplGradient->maStartColor = rStartColor;
mpImplGradient->maEndColor = rEndColor;
}
Gradient::~Gradient()
{
// If it's the last reference, delete it, otherwise
// decrement refcount
if ( mpImplGradient->mnRefCount == 1 )
delete mpImplGradient;
else
mpImplGradient->mnRefCount--;
}
void Gradient::SetStyle( GradientStyle eStyle )
{
MakeUnique();
mpImplGradient->meStyle = eStyle;
}
void Gradient::SetStartColor( const Color& rColor )
{
MakeUnique();
mpImplGradient->maStartColor = rColor;
}
void Gradient::SetEndColor( const Color& rColor )
{
MakeUnique();
mpImplGradient->maEndColor = rColor;
}
void Gradient::SetAngle( sal_uInt16 nAngle )
{
MakeUnique();
mpImplGradient->mnAngle = nAngle;
}
void Gradient::SetBorder( sal_uInt16 nBorder )
{
MakeUnique();
mpImplGradient->mnBorder = nBorder;
}
void Gradient::SetOfsX( sal_uInt16 nOfsX )
{
MakeUnique();
mpImplGradient->mnOfsX = nOfsX;
}
void Gradient::SetOfsY( sal_uInt16 nOfsY )
{
MakeUnique();
mpImplGradient->mnOfsY = nOfsY;
}
void Gradient::SetStartIntensity( sal_uInt16 nIntens )
{
MakeUnique();
mpImplGradient->mnIntensityStart = nIntens;
}
void Gradient::SetEndIntensity( sal_uInt16 nIntens )
{
MakeUnique();
mpImplGradient->mnIntensityEnd = nIntens;
}
void Gradient::SetSteps( sal_uInt16 nSteps )
{
MakeUnique();
mpImplGradient->mnStepCount = nSteps;
}
void Gradient::GetBoundRect( const Rectangle& rRect, Rectangle& rBoundRect, Point& rCenter ) const
{
Rectangle aRect( rRect );
sal_uInt16 nAngle = GetAngle() % 3600;
if( GetStyle() == GradientStyle_LINEAR || GetStyle() == GradientStyle_AXIAL )
{
const double fAngle = nAngle * F_PI1800;
const double fWidth = aRect.GetWidth();
const double fHeight = aRect.GetHeight();
double fDX = fWidth * fabs( cos( fAngle ) ) +
fHeight * fabs( sin( fAngle ) );
double fDY = fHeight * fabs( cos( fAngle ) ) +
fWidth * fabs( sin( fAngle ) );
fDX = (fDX - fWidth) * 0.5 + 0.5;
fDY = (fDY - fHeight) * 0.5 + 0.5;
aRect.Left() -= (long) fDX;
aRect.Right() += (long) fDX;
aRect.Top() -= (long) fDY;
aRect.Bottom() += (long) fDY;
rBoundRect = aRect;
rCenter = rRect.Center();
}
else
{
if( GetStyle() == GradientStyle_SQUARE || GetStyle() == GradientStyle_RECT )
{
const double fAngle = nAngle * F_PI1800;
const double fWidth = aRect.GetWidth();
const double fHeight = aRect.GetHeight();
double fDX = fWidth * fabs( cos( fAngle ) ) + fHeight * fabs( sin( fAngle ) );
double fDY = fHeight * fabs( cos( fAngle ) ) + fWidth * fabs( sin( fAngle ) );
fDX = ( fDX - fWidth ) * 0.5 + 0.5;
fDY = ( fDY - fHeight ) * 0.5 + 0.5;
aRect.Left() -= (long) fDX;
aRect.Right() += (long) fDX;
aRect.Top() -= (long) fDY;
aRect.Bottom() += (long) fDY;
}
Size aSize( aRect.GetSize() );
if( GetStyle() == GradientStyle_RADIAL )
{
// Calculation of radii for circle
aSize.Width() = (long)(0.5 + sqrt((double)aSize.Width()*(double)aSize.Width() + (double)aSize.Height()*(double)aSize.Height()));
aSize.Height() = aSize.Width();
}
else if( GetStyle() == GradientStyle_ELLIPTICAL )
{
// Calculation of radii for ellipse
aSize.Width() = (long)( 0.5 + (double) aSize.Width() * 1.4142 );
aSize.Height() = (long)( 0.5 + (double) aSize.Height() * 1.4142 );
}
// Calculate new centers
long nZWidth = aRect.GetWidth() * (long) GetOfsX() / 100;
long nZHeight = aRect.GetHeight() * (long) GetOfsY() / 100;
long nBorderX = (long) GetBorder() * aSize.Width() / 100;
long nBorderY = (long) GetBorder() * aSize.Height() / 100;
rCenter = Point( aRect.Left() + nZWidth, aRect.Top() + nZHeight );
// Respect borders
aSize.Width() -= nBorderX;
aSize.Height() -= nBorderY;
// Recalculate output rectangle
aRect.Left() = rCenter.X() - ( aSize.Width() >> 1 );
aRect.Top() = rCenter.Y() - ( aSize.Height() >> 1 );
aRect.SetSize( aSize );
rBoundRect = aRect;
}
}
Gradient& Gradient::operator=( const Gradient& rGradient )
{
// Increment refcount first so that we can reference ourselves
rGradient.mpImplGradient->mnRefCount++;
// If it's the last reference, delete it, otherwise decrement
if ( mpImplGradient->mnRefCount == 1 )
delete mpImplGradient;
else
mpImplGradient->mnRefCount--;
mpImplGradient = rGradient.mpImplGradient;
return *this;
}
bool Gradient::operator==( const Gradient& rGradient ) const
{
if ( mpImplGradient == rGradient.mpImplGradient )
return true;
if ( (mpImplGradient->meStyle == rGradient.mpImplGradient->meStyle) &&
(mpImplGradient->mnAngle == rGradient.mpImplGradient->mnAngle) &&
(mpImplGradient->mnBorder == rGradient.mpImplGradient->mnBorder) &&
(mpImplGradient->mnOfsX == rGradient.mpImplGradient->mnOfsX) &&
(mpImplGradient->mnOfsY == rGradient.mpImplGradient->mnOfsY) &&
(mpImplGradient->mnStepCount == rGradient.mpImplGradient->mnStepCount) &&
(mpImplGradient->mnIntensityStart == rGradient.mpImplGradient->mnIntensityStart) &&
(mpImplGradient->mnIntensityEnd == rGradient.mpImplGradient->mnIntensityEnd) &&
(mpImplGradient->maStartColor == rGradient.mpImplGradient->maStartColor) &&
(mpImplGradient->maEndColor == rGradient.mpImplGradient->maEndColor) )
return true;
else
return false;
}
SvStream& ReadImpl_Gradient( SvStream& rIStm, Impl_Gradient& rImpl_Gradient )
{
VersionCompat aCompat( rIStm, STREAM_READ );
sal_uInt16 nTmp16;
rIStm.ReadUInt16( nTmp16 ); rImpl_Gradient.meStyle = (GradientStyle) nTmp16;
ReadColor( rIStm, rImpl_Gradient.maStartColor );
ReadColor( rIStm, rImpl_Gradient.maEndColor );
rIStm.ReadUInt16( rImpl_Gradient.mnAngle ). ReadUInt16( rImpl_Gradient.mnBorder ). ReadUInt16( rImpl_Gradient.mnOfsX ). ReadUInt16( rImpl_Gradient.mnOfsY ). ReadUInt16( rImpl_Gradient.mnIntensityStart ). ReadUInt16( rImpl_Gradient.mnIntensityEnd ). ReadUInt16( rImpl_Gradient.mnStepCount );
return rIStm;
}
SvStream& WriteImpl_Gradient( SvStream& rOStm, const Impl_Gradient& rImpl_Gradient )
{
VersionCompat aCompat( rOStm, STREAM_WRITE, 1 );
rOStm.WriteUInt16( (sal_uInt16) rImpl_Gradient.meStyle );
WriteColor( rOStm, rImpl_Gradient.maStartColor );
WriteColor( rOStm, rImpl_Gradient.maEndColor );
rOStm.WriteUInt16( rImpl_Gradient.mnAngle )
.WriteUInt16( rImpl_Gradient.mnBorder )
.WriteUInt16( rImpl_Gradient.mnOfsX )
.WriteUInt16( rImpl_Gradient.mnOfsY )
.WriteUInt16( rImpl_Gradient.mnIntensityStart )
.WriteUInt16( rImpl_Gradient.mnIntensityEnd )
.WriteUInt16( rImpl_Gradient.mnStepCount );
return rOStm;
}
SvStream& ReadGradient( SvStream& rIStm, Gradient& rGradient )
{
rGradient.MakeUnique();
return ReadImpl_Gradient( rIStm, *rGradient.mpImplGradient );
}
SvStream& WriteGradient( SvStream& rOStm, const Gradient& rGradient )
{
return WriteImpl_Gradient( rOStm, *rGradient.mpImplGradient );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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