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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 <drawinglayer/attribute/fillgradientattribute.hxx>
namespace drawinglayer::attribute
{
class ImpFillGradientAttribute
{
public:
// data definitions
double mfBorder;
double mfOffsetX;
double mfOffsetY;
double mfAngle;
FillGradientAttribute::ColorSteps maColorSteps;
GradientStyle meStyle;
sal_uInt16 mnSteps;
ImpFillGradientAttribute(
GradientStyle eStyle,
double fBorder,
double fOffsetX,
double fOffsetY,
double fAngle,
const basegfx::BColor& rStartColor,
const basegfx::BColor& rEndColor,
const FillGradientAttribute::ColorSteps* pColorSteps,
sal_uInt16 nSteps)
: mfBorder(fBorder),
mfOffsetX(fOffsetX),
mfOffsetY(fOffsetY),
mfAngle(fAngle),
maColorSteps(),
meStyle(eStyle),
mnSteps(nSteps)
{
// always add start color to guarentee a color at all. It's also just safer
// to have one and not an empty vector, that spares many checks in the using code
maColorSteps.emplace_back(0.0, rStartColor);
// if we have ColorSteps, integrate these
if(nullptr != pColorSteps)
{
for(const auto& candidate : *pColorSteps)
{
// only allow ]0.0 .. 1.0[ as offset values, *excluding* 0.0 and 1.0
// explicitely - these are reserved for start/end color
if(basegfx::fTools::more(candidate.getOffset(), 0.0) && basegfx::fTools::less(candidate.getOffset(), 1.0))
{
// ignore same offsets, independent from color (so 1st one wins)
// having two or more same offsets is an error (may assert evtl.)
bool bAccept(true);
for(const auto& compare : maColorSteps)
{
if(basegfx::fTools::equal(compare.getOffset(), candidate.getOffset()))
{
bAccept = false;
break;
}
}
if(bAccept)
{
maColorSteps.push_back(candidate);
}
}
}
// sort by offset when colors were added
if(maColorSteps.size() > 1)
{
std::sort(maColorSteps.begin(), maColorSteps.end());
}
}
// add end color if different from last color - which is the start color
// when no ColorSteps are given
if(rEndColor != maColorSteps.back().getColor())
{
maColorSteps.emplace_back(1.0, rEndColor);
}
}
ImpFillGradientAttribute()
: mfBorder(0.0),
mfOffsetX(0.0),
mfOffsetY(0.0),
mfAngle(0.0),
maColorSteps(),
meStyle(GradientStyle::Linear),
mnSteps(0)
{
// always add a fallback color, see above
maColorSteps.emplace_back(0.0, basegfx::BColor());
}
// data read access
GradientStyle getStyle() const { return meStyle; }
double getBorder() const { return mfBorder; }
double getOffsetX() const { return mfOffsetX; }
double getOffsetY() const { return mfOffsetY; }
double getAngle() const { return mfAngle; }
const FillGradientAttribute::ColorSteps& getColorSteps() const { return maColorSteps; }
sal_uInt16 getSteps() const { return mnSteps; }
bool hasSingleColor() const
{
// no entries (should not happen, see comments for startColor)
if (0 == maColorSteps.size())
return true;
// check if not all colors are the same
const basegfx::BColor& rColor(maColorSteps[0].getColor());
for (size_t a(1); a < maColorSteps.size(); a++)
if (maColorSteps[a].getColor() != rColor)
return false;
// all colors are the same
return true;
}
bool operator==(const ImpFillGradientAttribute& rCandidate) const
{
return (getStyle() == rCandidate.getStyle()
&& getBorder() == rCandidate.getBorder()
&& getOffsetX() == rCandidate.getOffsetX()
&& getOffsetY() == rCandidate.getOffsetY()
&& getAngle() == rCandidate.getAngle()
&& getColorSteps() == rCandidate.getColorSteps()
&& getSteps() == rCandidate.getSteps());
}
};
namespace
{
FillGradientAttribute::ImplType& theGlobalDefault()
{
static FillGradientAttribute::ImplType SINGLETON;
return SINGLETON;
}
}
FillGradientAttribute::FillGradientAttribute(
GradientStyle eStyle,
double fBorder,
double fOffsetX,
double fOffsetY,
double fAngle,
const basegfx::BColor& rStartColor,
const basegfx::BColor& rEndColor,
const ColorSteps* pColorSteps,
sal_uInt16 nSteps)
: mpFillGradientAttribute(ImpFillGradientAttribute(
eStyle, fBorder, fOffsetX, fOffsetY, fAngle, rStartColor, rEndColor, pColorSteps, nSteps))
{
}
FillGradientAttribute::FillGradientAttribute()
: mpFillGradientAttribute(theGlobalDefault())
{
}
FillGradientAttribute::FillGradientAttribute(const FillGradientAttribute&) = default;
FillGradientAttribute::FillGradientAttribute(FillGradientAttribute&&) = default;
FillGradientAttribute::~FillGradientAttribute() = default;
bool FillGradientAttribute::isDefault() const
{
return mpFillGradientAttribute.same_object(theGlobalDefault());
}
bool FillGradientAttribute::hasSingleColor() const
{
return mpFillGradientAttribute->hasSingleColor();
}
FillGradientAttribute& FillGradientAttribute::operator=(const FillGradientAttribute&) = default;
FillGradientAttribute& FillGradientAttribute::operator=(FillGradientAttribute&&) = default;
bool FillGradientAttribute::operator==(const FillGradientAttribute& rCandidate) const
{
// tdf#87509 default attr is always != non-default attr, even with same values
if(rCandidate.isDefault() != isDefault())
return false;
return rCandidate.mpFillGradientAttribute == mpFillGradientAttribute;
}
const FillGradientAttribute::ColorSteps& FillGradientAttribute::getColorSteps() const
{
return mpFillGradientAttribute->getColorSteps();
}
double FillGradientAttribute::getBorder() const
{
return mpFillGradientAttribute->getBorder();
}
double FillGradientAttribute::getOffsetX() const
{
return mpFillGradientAttribute->getOffsetX();
}
double FillGradientAttribute::getOffsetY() const
{
return mpFillGradientAttribute->getOffsetY();
}
double FillGradientAttribute::getAngle() const
{
return mpFillGradientAttribute->getAngle();
}
GradientStyle FillGradientAttribute::getStyle() const
{
return mpFillGradientAttribute->getStyle();
}
sal_uInt16 FillGradientAttribute::getSteps() const
{
return mpFillGradientAttribute->getSteps();
}
} // end of namespace
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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