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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/.
*
*/
#include <docmodel/uno/UnoGradientTools.hxx>
#include <com/sun/star/awt/Gradient.hpp>
#include <com/sun/star/awt/Gradient2.hpp>
#include <com/sun/star/rendering/RGBColor.hpp>
#include <basegfx/utils/bgradient.hxx>
#include <tools/color.hxx>
using namespace css;
namespace model::gradient
{
css::awt::ColorStopSequence createColorStopSequence(basegfx::BColorStops const& rColorStops)
{
// Fill color stops
css::awt::ColorStopSequence aSequence(rColorStops.size());
css::awt::ColorStop* pSequence(aSequence.getArray());
for (const auto& rStop : rColorStops)
{
const auto& rBColor = rStop.getStopColor();
pSequence->StopOffset = rStop.getStopOffset();
pSequence->StopColor
= css::rendering::RGBColor(rBColor.getRed(), rBColor.getGreen(), rBColor.getBlue());
pSequence++;
}
return aSequence;
}
css::awt::Gradient2 createUnoGradient2(basegfx::BGradient const& rGradient)
{
css::awt::Gradient2 aGradient2;
// standard values
aGradient2.Style = rGradient.GetGradientStyle();
aGradient2.Angle = static_cast<short>(rGradient.GetAngle());
aGradient2.Border = rGradient.GetBorder();
aGradient2.XOffset = rGradient.GetXOffset();
aGradient2.YOffset = rGradient.GetYOffset();
aGradient2.StartIntensity = rGradient.GetStartIntens();
aGradient2.EndIntensity = rGradient.GetEndIntens();
aGradient2.StepCount = rGradient.GetSteps();
// for compatibility, still set StartColor/EndColor
// NOTE: All code after adapting to multi color gradients works
// using the ColorSteps, so in principle Start/EndColor might
// be either
// (a) ignored consequently everywhere or
// (b) be set/added consequently everywhere
// since this is - in principle - redundant data.
// Be aware that e.g. cases like DrawingML::EqualGradients
// and others would have to be identified and adapted (!)
// Since awt::Gradient2 is UNO API data there might
// be cases where just awt::Gradient is transferred, so (b)
// is far better backwards compatible and thus more safe, so
// all changes will make use of additionally using/setting
// these additionally, but will only make use of the given
// ColorSteps if these are not empty, assuming that these
// already contain Start/EndColor.
// In principle that redundancy and that it is conflict-free
// could even be checked and asserted, but consequently using
// (b) methodically should be safe.
const basegfx::BColorStops& rColorStops = rGradient.GetColorStops();
aGradient2.StartColor = static_cast<sal_Int32>(::Color(rColorStops.front().getStopColor()));
aGradient2.EndColor = static_cast<sal_Int32>(::Color(rColorStops.back().getStopColor()));
aGradient2.ColorStops = createColorStopSequence(rColorStops);
return aGradient2;
}
namespace
{
void fillFromColorStopSequence(basegfx::BColorStops& rColorStops,
css::awt::ColorStopSequence const& rUnoColorStopSequence)
{
const auto nLength = rUnoColorStopSequence.getLength();
if (0 != nLength)
{
rColorStops.clear();
rColorStops.reserve(nLength);
for (css::awt::ColorStop const& rSourceStop : rUnoColorStopSequence)
{
rColorStops.emplace_back(rSourceStop.StopOffset,
basegfx::BColor(rSourceStop.StopColor.Red,
rSourceStop.StopColor.Green,
rSourceStop.StopColor.Blue));
}
}
}
void fillFromGradient2(basegfx::BGradient& rBGradient, css::awt::Gradient2 const& rGradient2)
{
rBGradient.SetGradientStyle(rGradient2.Style);
rBGradient.SetAngle(Degree10(rGradient2.Angle));
rBGradient.SetBorder(rGradient2.Border);
rBGradient.SetXOffset(rGradient2.XOffset);
rBGradient.SetYOffset(rGradient2.YOffset);
rBGradient.SetStartIntens(rGradient2.StartIntensity);
rBGradient.SetEndIntens(rGradient2.EndIntensity);
rBGradient.SetSteps(rGradient2.StepCount);
// set ColorStops
if (rGradient2.ColorStops.hasElements())
{
basegfx::BColorStops aColorStops;
fillFromColorStopSequence(aColorStops, rGradient2.ColorStops);
rBGradient.SetColorStops(aColorStops);
}
else
{
// if not, for compatibility, use StartColor/EndColor
basegfx::BColorStops aColorStops{
basegfx::BColorStop(0.0, ::Color(ColorTransparency, rGradient2.StartColor).getBColor()),
basegfx::BColorStop(1.0, ::Color(ColorTransparency, rGradient2.EndColor).getBColor())
};
rBGradient.SetColorStops(aColorStops);
}
}
} // end anonymous
basegfx::BColorStops getColorStopsFromUno(css::awt::ColorStopSequence const& rColorStopSequence)
{
basegfx::BColorStops aColorStops;
fillFromColorStopSequence(aColorStops, rColorStopSequence);
return aColorStops;
}
basegfx::BColorStops getColorStopsFromAny(css::uno::Any const& rAny)
{
basegfx::BColorStops aColorStops;
if (!rAny.has<css::awt::ColorStopSequence>())
return aColorStops;
auto aSequence = rAny.get<css::awt::ColorStopSequence>();
fillFromColorStopSequence(aColorStops, aSequence);
return aColorStops;
}
basegfx::BGradient getFromUnoGradient2(css::awt::Gradient2 const& rGradient2)
{
basegfx::BGradient aBGradient;
fillFromGradient2(aBGradient, rGradient2);
return aBGradient;
}
basegfx::BGradient getFromAny(css::uno::Any const& rAny)
{
basegfx::BGradient aBGradient;
if (rAny.has<css::awt::Gradient2>())
{
// we can use awt::Gradient2 directly
css::awt::Gradient2 aGradient2;
rAny >>= aGradient2;
fillFromGradient2(aBGradient, aGradient2);
}
else if (rAny.has<css::awt::Gradient>())
{
// use awt::Gradient
css::awt::Gradient aGradient;
rAny >>= aGradient;
// set values
aBGradient.SetGradientStyle(aGradient.Style);
aBGradient.SetAngle(Degree10(aGradient.Angle));
aBGradient.SetBorder(aGradient.Border);
aBGradient.SetXOffset(aGradient.XOffset);
aBGradient.SetYOffset(aGradient.YOffset);
aBGradient.SetStartIntens(aGradient.StartIntensity);
aBGradient.SetEndIntens(aGradient.EndIntensity);
aBGradient.SetSteps(aGradient.StepCount);
basegfx::BColorStops aColorStops{
basegfx::BColorStop(0.0, ::Color(ColorTransparency, aGradient.StartColor).getBColor()),
basegfx::BColorStop(1.0, ::Color(ColorTransparency, aGradient.EndColor).getBColor())
};
aBGradient.SetColorStops(aColorStops);
}
return aBGradient;
}
} // end model::gradient
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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