svgfefloodnode.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 <drawinglayer/primitive2d/PolyPolygonColorPrimitive2D.hxx>
#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
#include <drawinglayer/primitive2d/unifiedtransparenceprimitive2d.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <svgfefloodnode.hxx>
#include <o3tl/string_view.hxx>
 
namespace svgio::svgreader
{
SvgFeFloodNode::SvgFeFloodNode(SvgDocument& rDocument, SvgNode* pParent)
    : SvgFilterNode(SVGToken::FeFlood, rDocument, pParent)
    , maX(0.0)
    , maY(0.0)
    , maWidth(0.0)
    , maHeight(0.0)
    , maFloodColor(SvgPaint())
    , maFloodOpacity(1.0)
{
}
 
SvgFeFloodNode::~SvgFeFloodNode() {}
 
void SvgFeFloodNode::parseAttribute(const OUString& /*rTokenName*/, SVGToken aSVGToken,
                                    const OUString& aContent)
{
    // parse own
    switch (aSVGToken)
    {
        case SVGToken::Style:
        {
            readLocalCssStyle(aContent);
            break;
        }
        case SVGToken::X:
        {
            SvgNumber aNum;
 
            if (readSingleNumber(aContent, aNum))
            {
                maX = aNum;
            }
            break;
        }
        case SVGToken::Y:
        {
            SvgNumber aNum;
 
            if (readSingleNumber(aContent, aNum))
            {
                maY = aNum;
            }
            break;
        }
        case SVGToken::Width:
        {
            SvgNumber aNum;
 
            if (readSingleNumber(aContent, aNum))
            {
                if (aNum.isPositive())
                {
                    maWidth = aNum;
                }
            }
            break;
        }
        case SVGToken::Height:
        {
            SvgNumber aNum;
 
            if (readSingleNumber(aContent, aNum))
            {
                if (aNum.isPositive())
                {
                    maHeight = aNum;
                }
            }
            break;
        }
        case SVGToken::FloodColor:
        {
            SvgPaint aSvgPaint;
            OUString aURL;
            SvgNumber aOpacity;
 
            if (readSvgPaint(aContent, aSvgPaint, aURL, aOpacity))
            {
                maFloodColor = aSvgPaint;
            }
            break;
        }
        case SVGToken::FloodOpacity:
        {
            SvgNumber aNum;
 
            if (readSingleNumber(aContent, aNum))
            {
                maFloodOpacity = SvgNumber(std::clamp(aNum.getNumber(), 0.0, 1.0), aNum.getUnit(),
                                           aNum.isSet());
            }
            break;
        }
 
        default:
        {
            break;
        }
    }
}
 
void SvgFeFloodNode::apply(drawinglayer::primitive2d::Primitive2DContainer& rTarget) const
{
    const double fWidth(maWidth.solve(*this, NumberType::xcoordinate));
    const double fHeight(maHeight.solve(*this, NumberType::ycoordinate));
 
    if (fWidth <= 0.0 || fHeight <= 0.0)
        return;
 
    const double fX(maX.solve(*this, NumberType::xcoordinate));
    const double fY(maY.solve(*this, NumberType::ycoordinate));
    const basegfx::B2DRange aRange(fX, fY, fX + fWidth, fY + fHeight);
 
    basegfx::B2DPolyPolygon aPolygon(basegfx::utils::createPolygonFromRect(aRange));
    drawinglayer::primitive2d::Primitive2DReference xRef(
        new drawinglayer::primitive2d::PolyPolygonColorPrimitive2D(aPolygon,
                                                                   maFloodColor.getBColor()));
 
    rTarget = drawinglayer::primitive2d::Primitive2DContainer{ xRef };
 
    const double fOpacity(maFloodOpacity.solve(*this));
 
    if (basegfx::fTools::less(fOpacity, 1.0))
    {
        xRef = new drawinglayer::primitive2d::UnifiedTransparencePrimitive2D(std::move(rTarget),
                                                                             1.0 - fOpacity);
 
        rTarget = drawinglayer::primitive2d::Primitive2DContainer{ xRef };
    }
}
 
} // end of namespace svgio::svgreader
 
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