svgfecolormatrixnode.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#include <svgfecolormatrixnode.hxx>
#include <drawinglayer/primitive2d/modifiedcolorprimitive2d.hxx>
#include <o3tl/string_view.hxx>
 
namespace svgio::svgreader
{
SvgFeColorMatrixNode::SvgFeColorMatrixNode(SvgDocument& rDocument, SvgNode* pParent)
    : SvgFilterNode(SVGToken::FeColorMatrix, rDocument, pParent)
    , maType(ColorType::Matrix)
{
}
 
SvgFeColorMatrixNode::~SvgFeColorMatrixNode() {}
 
void SvgFeColorMatrixNode::parseAttribute(const OUString& /*rTokenName*/, SVGToken aSVGToken,
                                          const OUString& aContent)
{
    // parse own
    switch (aSVGToken)
    {
        case SVGToken::Type:
        {
            if (!aContent.isEmpty())
            {
                if (o3tl::equalsIgnoreAsciiCase(o3tl::trim(aContent), u"luminanceToAlpha"))
                {
                    maType = ColorType::LuminanceToAlpha;
                }
                else if (o3tl::equalsIgnoreAsciiCase(o3tl::trim(aContent), u"saturate"))
                {
                    maType = ColorType::Saturate;
                }
                else if (o3tl::equalsIgnoreAsciiCase(o3tl::trim(aContent), u"hueRotate"))
                {
                    maType = ColorType::HueRotate;
                }
                else if (o3tl::equalsIgnoreAsciiCase(o3tl::trim(aContent), u"matrix"))
                {
                    maType = ColorType::Matrix;
                }
            }
            break;
        }
        case SVGToken::Values:
        {
            maValuesContent = aContent;
            break;
        }
        default:
        {
            break;
        }
    }
}
 
void SvgFeColorMatrixNode::apply(drawinglayer::primitive2d::Primitive2DContainer& rTarget) const
{
    if (maType == ColorType::LuminanceToAlpha)
    {
        const drawinglayer::primitive2d::Primitive2DReference xRef(
            new drawinglayer::primitive2d::ModifiedColorPrimitive2D(
                std::move(rTarget),
                std::make_shared<basegfx::BColorModifier_luminance_to_alpha>()));
        rTarget = drawinglayer::primitive2d::Primitive2DContainer{ xRef };
    }
    else if (maType == ColorType::Saturate)
    {
        SvgNumber aNum(1.0);
        (void)readSingleNumber(maValuesContent, aNum);
 
        const drawinglayer::primitive2d::Primitive2DReference xRef(
            new drawinglayer::primitive2d::ModifiedColorPrimitive2D(
                std::move(rTarget),
                std::make_shared<basegfx::BColorModifier_saturate>(aNum.getNumber())));
        rTarget = drawinglayer::primitive2d::Primitive2DContainer{ xRef };
    }
    else if (maType == ColorType::HueRotate)
    {
        SvgNumber aNum(0.0);
        (void)readSingleNumber(maValuesContent, aNum);
        const drawinglayer::primitive2d::Primitive2DReference xRef(
            new drawinglayer::primitive2d::ModifiedColorPrimitive2D(
                std::move(rTarget), std::make_shared<basegfx::BColorModifier_hueRotate>(
                                        basegfx::deg2rad(aNum.getNumber()))));
        rTarget = drawinglayer::primitive2d::Primitive2DContainer{ xRef };
    }
    else if (maType == ColorType::Matrix)
    {
        std::vector<double> aVector = readFilterMatrix(maValuesContent, *this);
 
        const drawinglayer::primitive2d::Primitive2DReference xRef(
            new drawinglayer::primitive2d::ModifiedColorPrimitive2D(
                std::move(rTarget), std::make_shared<basegfx::BColorModifier_matrix>(aVector)));
        rTarget = drawinglayer::primitive2d::Primitive2DContainer{ xRef };
    }
}
 
} // end of namespace svgio::svgreader
 
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