qsvgstyle.cpp

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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qsvgstyle_p.h"
 
#include "qsvgfont_p.h"
#include "qsvggraphics_p.h"
#include "qsvgnode_p.h"
#include "private/qsvganimate_p.h"
#include "qsvgtinydocument_p.h"
 
#include "qpainter.h"
#include "qpair.h"
#include "qcolor.h"
#include "qdebug.h"
#include "qmath.h"
#include "qnumeric.h"
 
QT_BEGIN_NAMESPACE
 
QSvgExtraStates::QSvgExtraStates()
    : fillOpacity(1.0),
      strokeOpacity(1.0),
      svgFont(0),
      textAnchor(Qt::AlignLeft),
      fontWeight(QFont::Normal),
      fillRule(Qt::WindingFill),
      strokeDashOffset(0),
      vectorEffect(false),
      imageRendering(QSvgQualityStyle::ImageRenderingAuto)
{
}
 
QSvgStyleProperty::~QSvgStyleProperty()
{
}
 
void QSvgPaintStyleProperty::apply(QPainter *, const QSvgNode *, QSvgExtraStates &)
{
    Q_ASSERT(!"This should not be called!");
}
 
void QSvgPaintStyleProperty::revert(QPainter *, QSvgExtraStates &)
{
    Q_ASSERT(!"This should not be called!");
}
 
 
QSvgQualityStyle::QSvgQualityStyle(int color)
    : m_imageRendering(QSvgQualityStyle::ImageRenderingAuto)
    , m_oldImageRendering(QSvgQualityStyle::ImageRenderingAuto)
    , m_imageRenderingSet(0)
{
    Q_UNUSED(color);
}
 
void QSvgQualityStyle::setImageRendering(ImageRendering hint) {
    m_imageRendering = hint;
    m_imageRenderingSet = 1;
}
 
void QSvgQualityStyle::apply(QPainter *p, const QSvgNode *, QSvgExtraStates &states)
{
   m_oldImageRendering = states.imageRendering;
   if (m_imageRenderingSet) {
       states.imageRendering = m_imageRendering;
   }
   if (m_imageRenderingSet) {
       bool smooth = false;
       if (m_imageRendering == ImageRenderingAuto)
           // auto (the spec says to prefer quality)
           smooth = true;
       else
           smooth = (m_imageRendering == ImageRenderingOptimizeQuality);
       p->setRenderHint(QPainter::SmoothPixmapTransform, smooth);
   }
}
 
void QSvgQualityStyle::revert(QPainter *p, QSvgExtraStates &states)
{
    if (m_imageRenderingSet) {
        states.imageRendering = m_oldImageRendering;
        bool smooth = false;
        if (m_oldImageRendering == ImageRenderingAuto)
            smooth = true;
        else
            smooth = (m_oldImageRendering == ImageRenderingOptimizeQuality);
        p->setRenderHint(QPainter::SmoothPixmapTransform, smooth);
    }
}
 
QSvgFillStyle::QSvgFillStyle()
    : m_style(0)
    , m_fillRule(Qt::WindingFill)
    , m_oldFillRule(Qt::WindingFill)
    , m_fillOpacity(1.0)
    , m_oldFillOpacity(0)
    , m_paintStyleResolved(1)
    , m_fillRuleSet(0)
    , m_fillOpacitySet(0)
    , m_fillSet(0)
{
}
 
void QSvgFillStyle::setFillRule(Qt::FillRule f)
{
    m_fillRuleSet = 1;
    m_fillRule = f;
}
 
void QSvgFillStyle::setFillOpacity(qreal opacity)
{
    m_fillOpacitySet = 1;
    m_fillOpacity = opacity;
}
 
void QSvgFillStyle::setFillStyle(QSvgPaintStyleProperty* style)
{
    m_style = style;
    m_fillSet = 1;
}
 
void QSvgFillStyle::setBrush(QBrush brush)
{
    m_fill = std::move(brush);
    m_style = nullptr;
    m_fillSet = 1;
}
 
void QSvgFillStyle::apply(QPainter *p, const QSvgNode *n, QSvgExtraStates &states)
{
    m_oldFill = p->brush();
    m_oldFillRule = states.fillRule;
    m_oldFillOpacity = states.fillOpacity;
 
    if (m_fillRuleSet)
        states.fillRule = m_fillRule;
    if (m_fillSet) {
        if (m_style)
            p->setBrush(m_style->brush(p, n, states));
        else
            p->setBrush(m_fill);
    }
    if (m_fillOpacitySet)
        states.fillOpacity = m_fillOpacity;
}
 
void QSvgFillStyle::revert(QPainter *p, QSvgExtraStates &states)
{
    if (m_fillOpacitySet)
        states.fillOpacity = m_oldFillOpacity;
    if (m_fillSet)
        p->setBrush(m_oldFill);
    if (m_fillRuleSet)
        states.fillRule = m_oldFillRule;
}
 
QSvgViewportFillStyle::QSvgViewportFillStyle(const QBrush &brush)
    : m_viewportFill(brush)
{
}
 
void QSvgViewportFillStyle::apply(QPainter *p, const QSvgNode *, QSvgExtraStates &)
{
    m_oldFill = p->brush();
    p->setBrush(m_viewportFill);
}
 
void QSvgViewportFillStyle::revert(QPainter *p, QSvgExtraStates &)
{
    p->setBrush(m_oldFill);
}
 
QSvgFontStyle::QSvgFontStyle(QSvgFont *font, QSvgTinyDocument *doc)
    : m_svgFont(font)
    , m_doc(doc)
    , m_familySet(0)
    , m_sizeSet(0)
    , m_styleSet(0)
    , m_variantSet(0)
    , m_weightSet(0)
    , m_textAnchorSet(0)
{
}
 
QSvgFontStyle::QSvgFontStyle()
    : m_svgFont(0)
    , m_doc(0)
    , m_familySet(0)
    , m_sizeSet(0)
    , m_styleSet(0)
    , m_variantSet(0)
    , m_weightSet(0)
    , m_textAnchorSet(0)
{
}
 
void QSvgFontStyle::apply(QPainter *p, const QSvgNode *, QSvgExtraStates &states)
{
    m_oldQFont = p->font();
    m_oldSvgFont = states.svgFont;
    m_oldTextAnchor = states.textAnchor;
    m_oldWeight = states.fontWeight;
 
    if (m_textAnchorSet)
        states.textAnchor = m_textAnchor;
 
    QFont font = m_oldQFont;
    if (m_familySet) {
        states.svgFont = m_svgFont;
        font.setFamilies(m_qfont.families());
    }
 
    if (m_sizeSet)
        font.setPointSizeF(m_qfont.pointSizeF());
 
    if (m_styleSet)
        font.setStyle(m_qfont.style());
 
    if (m_variantSet)
        font.setCapitalization(m_qfont.capitalization());
 
    if (m_weightSet) {
        if (m_weight == BOLDER) {
            states.fontWeight = qMin(states.fontWeight + 100, static_cast<int>(QFont::Black));
        } else if (m_weight == LIGHTER) {
            states.fontWeight = qMax(states.fontWeight - 100, static_cast<int>(QFont::Thin));
        } else {
            states.fontWeight = m_weight;
        }
        font.setWeight(QFont::Weight(qBound(static_cast<int>(QFont::Weight::Thin),
                                            states.fontWeight,
                                            static_cast<int>(QFont::Weight::Black))));
    }
 
    p->setFont(font);
}
 
void QSvgFontStyle::revert(QPainter *p, QSvgExtraStates &states)
{
    p->setFont(m_oldQFont);
    states.svgFont = m_oldSvgFont;
    states.textAnchor = m_oldTextAnchor;
    states.fontWeight = m_oldWeight;
}
 
QSvgStrokeStyle::QSvgStrokeStyle()
    : m_strokeOpacity(1.0)
    , m_oldStrokeOpacity(0.0)
    , m_strokeDashOffset(0)
    , m_oldStrokeDashOffset(0)
    , m_style(0)
    , m_paintStyleResolved(1)
    , m_vectorEffect(0)
    , m_oldVectorEffect(0)
    , m_strokeSet(0)
    , m_strokeDashArraySet(0)
    , m_strokeDashOffsetSet(0)
    , m_strokeLineCapSet(0)
    , m_strokeLineJoinSet(0)
    , m_strokeMiterLimitSet(0)
    , m_strokeOpacitySet(0)
    , m_strokeWidthSet(0)
    , m_vectorEffectSet(0)
{
}
 
void QSvgStrokeStyle::apply(QPainter *p, const QSvgNode *n, QSvgExtraStates &states)
{
    m_oldStroke = p->pen();
    m_oldStrokeOpacity = states.strokeOpacity;
    m_oldStrokeDashOffset = states.strokeDashOffset;
    m_oldVectorEffect = states.vectorEffect;
 
    QPen pen = p->pen();
 
    qreal oldWidth = pen.widthF();
    qreal width = m_stroke.widthF();
    if (oldWidth == 0)
        oldWidth = 1;
    if (width == 0)
        width = 1;
    qreal scale = oldWidth / width;
 
    if (m_strokeOpacitySet)
        states.strokeOpacity = m_strokeOpacity;
 
    if (m_vectorEffectSet)
        states.vectorEffect = m_vectorEffect;
 
    if (m_strokeSet) {
        if (m_style)
            pen.setBrush(m_style->brush(p, n, states));
        else
            pen.setBrush(m_stroke.brush());
    }
 
    if (m_strokeWidthSet)
        pen.setWidthF(m_stroke.widthF());
 
    bool setDashOffsetNeeded = false;
 
    if (m_strokeDashOffsetSet) {
        states.strokeDashOffset = m_strokeDashOffset;
        setDashOffsetNeeded = true;
    }
 
    if (m_strokeDashArraySet) {
        if (m_stroke.style() == Qt::SolidLine) {
            pen.setStyle(Qt::SolidLine);
        } else if (m_strokeWidthSet || oldWidth == 1) {
            // If both width and dash array was set, the dash array is already scaled correctly.
            pen.setDashPattern(m_stroke.dashPattern());
            setDashOffsetNeeded = true;
        } else {
            // If dash array was set, but not the width, the dash array has to be scaled with respect to the old width.
            QList<qreal> dashes = m_stroke.dashPattern();
            for (int i = 0; i < dashes.size(); ++i)
                dashes[i] /= oldWidth;
            pen.setDashPattern(dashes);
            setDashOffsetNeeded = true;
        }
    } else if (m_strokeWidthSet && pen.style() != Qt::SolidLine && scale != 1) {
        // If the width was set, but not the dash array, the old dash array must be scaled with respect to the new width.
        QList<qreal> dashes = pen.dashPattern();
        for (int i = 0; i < dashes.size(); ++i)
            dashes[i] *= scale;
        pen.setDashPattern(dashes);
        setDashOffsetNeeded = true;
    }
 
    if (m_strokeLineCapSet)
        pen.setCapStyle(m_stroke.capStyle());
    if (m_strokeLineJoinSet)
        pen.setJoinStyle(m_stroke.joinStyle());
    if (m_strokeMiterLimitSet)
        pen.setMiterLimit(m_stroke.miterLimit());
 
    // You can have dash offset on solid strokes in SVG files, but not in Qt.
    // QPen::setDashOffset() will set the pen style to Qt::CustomDashLine,
    // so don't call the method if the pen is solid.
    if (setDashOffsetNeeded && pen.style() != Qt::SolidLine) {
        qreal currentWidth = pen.widthF();
        if (currentWidth == 0)
            currentWidth = 1;
        pen.setDashOffset(states.strokeDashOffset / currentWidth);
    }
 
    pen.setCosmetic(states.vectorEffect);
 
    p->setPen(pen);
}
 
void QSvgStrokeStyle::revert(QPainter *p, QSvgExtraStates &states)
{
    p->setPen(m_oldStroke);
    states.strokeOpacity = m_oldStrokeOpacity;
    states.strokeDashOffset = m_oldStrokeDashOffset;
    states.vectorEffect = m_oldVectorEffect;
}
 
void QSvgStrokeStyle::setDashArray(const QList<qreal> &dashes)
{
    if (m_strokeWidthSet) {
        QList<qreal> d = dashes;
        qreal w = m_stroke.widthF();
        if (w != 0 && w != 1) {
            for (int i = 0; i < d.size(); ++i)
                d[i] /= w;
        }
        m_stroke.setDashPattern(d);
    } else {
        m_stroke.setDashPattern(dashes);
    }
    m_strokeDashArraySet = 1;
}
 
QSvgSolidColorStyle::QSvgSolidColorStyle(const QColor &color)
    : m_solidColor(color)
{
}
 
QSvgGradientStyle::QSvgGradientStyle(QGradient *grad)
    : m_gradient(grad), m_gradientStopsSet(false)
{
}
 
QBrush QSvgGradientStyle::brush(QPainter *, const QSvgNode *, QSvgExtraStates &)
{
    if (!m_link.isEmpty()) {
        resolveStops();
    }
 
    // If the gradient is marked as empty, insert transparent black
    if (!m_gradientStopsSet) {
        m_gradient->setStops(QGradientStops() << QGradientStop(0.0, QColor(0, 0, 0, 0)));
        m_gradientStopsSet = true;
    }
 
    QBrush b(*m_gradient);
 
    if (!m_transform.isIdentity())
        b.setTransform(m_transform);
 
    return b;
}
 
 
void QSvgGradientStyle::setTransform(const QTransform &transform)
{
    m_transform = transform;
}
 
QSvgPatternStyle::QSvgPatternStyle(QSvgPattern *pattern)
    : m_pattern(pattern)
{
 
}
 
QBrush QSvgPatternStyle::brush(QPainter *p, const QSvgNode *node, QSvgExtraStates &states)
{
    QBrush b(m_pattern->patternImage(p, states, node));
    b.setTransform(m_pattern->appliedTransform());
    return b;
}
 
QSvgTransformStyle::QSvgTransformStyle(const QTransform &trans)
    : m_transform(trans)
{
}
 
void QSvgTransformStyle::apply(QPainter *p, const QSvgNode *, QSvgExtraStates &)
{
    m_oldWorldTransform.push(p->worldTransform());
    p->setWorldTransform(m_transform, true);
}
 
void QSvgTransformStyle::revert(QPainter *p, QSvgExtraStates &)
{
    p->setWorldTransform(m_oldWorldTransform.pop(), false /* don't combine */);
}
 
QSvgStyleProperty::Type QSvgQualityStyle::type() const
{
    return QUALITY;
}
 
QSvgStyleProperty::Type QSvgFillStyle::type() const
{
    return FILL;
}
 
QSvgStyleProperty::Type QSvgViewportFillStyle::type() const
{
    return VIEWPORT_FILL;
}
 
QSvgStyleProperty::Type QSvgFontStyle::type() const
{
    return FONT;
}
 
QSvgStyleProperty::Type QSvgStrokeStyle::type() const
{
    return STROKE;
}
 
QSvgStyleProperty::Type QSvgSolidColorStyle::type() const
{
    return SOLID_COLOR;
}
 
QSvgStyleProperty::Type QSvgGradientStyle::type() const
{
    return GRADIENT;
}
 
QSvgStyleProperty::Type QSvgPatternStyle::type() const
{
    return PATTERN;
}
 
QSvgStyleProperty::Type QSvgTransformStyle::type() const
{
    return TRANSFORM;
}
 
 
QSvgCompOpStyle::QSvgCompOpStyle(QPainter::CompositionMode mode)
    : m_mode(mode)
{
 
}
 
void QSvgCompOpStyle::apply(QPainter *p, const QSvgNode *, QSvgExtraStates &)
{
    m_oldMode = p->compositionMode();
    p->setCompositionMode(m_mode);
}
 
void QSvgCompOpStyle::revert(QPainter *p, QSvgExtraStates &)
{
    p->setCompositionMode(m_oldMode);
}
 
QSvgStyleProperty::Type QSvgCompOpStyle::type() const
{
    return COMP_OP;
}
 
void QSvgOffsetStyle::apply(QPainter *, const QSvgNode *, QSvgExtraStates &)
{
}
 
void QSvgOffsetStyle::revert(QPainter *, QSvgExtraStates &)
{
}
 
QSvgStyleProperty::Type QSvgOffsetStyle::type() const
{
    return OFFSET;
}
 
QSvgOpacityStyle::QSvgOpacityStyle(qreal opacity)
    : m_opacity(opacity), m_oldOpacity(0)
{
 
}
 
void QSvgOpacityStyle::apply(QPainter *p, const QSvgNode *, QSvgExtraStates &)
{
    m_oldOpacity = p->opacity();
    p->setOpacity(m_opacity * m_oldOpacity);
}
 
void QSvgOpacityStyle::revert(QPainter *p, QSvgExtraStates &)
{
    p->setOpacity(m_oldOpacity);
}
 
QSvgStyleProperty::Type QSvgOpacityStyle::type() const
{
    return OPACITY;
}
 
void QSvgGradientStyle::setStopLink(const QString &link, QSvgTinyDocument *doc)
{
    m_link = link;
    m_doc  = doc;
}
 
void QSvgGradientStyle::resolveStops()
{
    QStringList visited;
    resolveStops_helper(&visited);
}
 
void QSvgGradientStyle::resolveStops_helper(QStringList *visited)
{
    if (!m_link.isEmpty() && m_doc) {
        QSvgStyleProperty *prop = m_doc->styleProperty(m_link);
        if (prop && !visited->contains(m_link)) {
            visited->append(m_link);
            if (prop->type() == QSvgStyleProperty::GRADIENT) {
                QSvgGradientStyle *st =
                    static_cast<QSvgGradientStyle*>(prop);
                st->resolveStops_helper(visited);
                m_gradient->setStops(st->qgradient()->stops());
                m_gradientStopsSet = st->gradientStopsSet();
            }
        } else {
            qWarning("Could not resolve property : %s", qPrintable(m_link));
        }
        m_link = QString();
    }
}
 
QSvgStaticStyle::QSvgStaticStyle()
    : quality(0)
    , fill(0)
    , viewportFill(0)
    , font(0)
    , stroke(0)
    , solidColor(0)
    , gradient(0)
    , pattern(0)
    , transform(0)
    , opacity(0)
    , compop(0)
{
}
 
QSvgStaticStyle::~QSvgStaticStyle()
{
}
 
void QSvgStaticStyle::apply(QPainter *p, const QSvgNode *node, QSvgExtraStates &states)
{
    if (quality) {
        quality->apply(p, node, states);
    }
 
    if (fill) {
        fill->apply(p, node, states);
    }
 
    if (viewportFill) {
        viewportFill->apply(p, node, states);
    }
 
    if (font) {
        font->apply(p, node, states);
    }
 
    if (stroke) {
        stroke->apply(p, node, states);
    }
 
    if (transform) {
        transform->apply(p, node, states);
    }
 
    if (opacity) {
        opacity->apply(p, node, states);
    }
 
    if (compop) {
        compop->apply(p, node, states);
    }
}
 
void QSvgStaticStyle::revert(QPainter *p, QSvgExtraStates &states)
{
    if (quality) {
        quality->revert(p, states);
    }
 
    if (fill) {
        fill->revert(p, states);
    }
 
    if (viewportFill) {
        viewportFill->revert(p, states);
    }
 
    if (font) {
        font->revert(p, states);
    }
 
    if (stroke) {
        stroke->revert(p, states);
    }
 
    if (transform) {
        transform->revert(p, states);
    }
 
    if (opacity) {
        opacity->revert(p, states);
    }
 
    if (compop) {
        compop->revert(p, states);
    }
}
 
namespace {
 
QColor sumValue(const QColor &c1, const QColor &c2)
{
    QRgb rgb1 = c1.rgba();
    QRgb rgb2 = c2.rgba();
    int sumRed = qRed(rgb1) + qRed(rgb2);
    int sumGreen = qGreen(rgb1) + qGreen(rgb2);
    int sumBlue = qBlue(rgb1) + qBlue(rgb2);
 
    QRgb sumRgb = qRgba(qBound(0, sumRed, 255),
                        qBound(0, sumGreen, 255),
                        qBound(0, sumBlue, 255),
                        255);
 
    return QColor(sumRgb);
}
 
qreal sumValue(qreal value1, qreal value2)
{
    qreal sumValue = value1 + value2;
    return qBound(0.0, sumValue, 1.0);
}
 
}
 
QSvgAnimatedStyle::QSvgAnimatedStyle()
{
}
 
QSvgAnimatedStyle::~QSvgAnimatedStyle()
{
}
 
void QSvgAnimatedStyle::apply(QPainter *p, const QSvgNode *node, QSvgExtraStates &states)
{
    QSharedPointer<QSvgAbstractAnimator> animator = node->document()->animator();
    QList<QSvgAbstractAnimation *> nodeAnims = animator->animationsForNode(node);
 
    savePaintingState(p, node, states);
    if (nodeAnims.isEmpty())
        return;
 
    QSvgStyleState currentStyle = m_static;
    for (auto anim : nodeAnims) {
        if (!anim->isActive())
            continue;
 
        fetchStyleState(anim, currentStyle);
    }
 
    applyStyle(p, states, currentStyle);
}
 
void QSvgAnimatedStyle::revert(QPainter *p, QSvgExtraStates &states)
{
    p->setWorldTransform(m_worldTransform);
    p->setBrush(m_static.fill);
    p->setPen(m_static.stroke);
    p->setOpacity(m_static.opacity);
    states.fillOpacity = m_static.fillOpacity;
    states.strokeOpacity = m_static.strokeOpacity;
}
 
void QSvgAnimatedStyle::savePaintingState(const QPainter *p, const QSvgNode *node, QSvgExtraStates &states)
{
    QSvgStaticStyle style = node->style();
    m_worldTransform = p->worldTransform();
    if (style.transform)
        m_static.transform = style.transform->qtransform();
 
    if (style.offset) {
        m_static.offsetPath = style.offset->path();
        m_static.offsetRotateType = style.offset->rotateType();
        m_static.offsetRotate = style.offset->rotateAngle();
    }
 
    m_static.fill = p->brush();
    m_static.stroke = p->pen();
    m_static.fillOpacity = states.fillOpacity;
    m_static.strokeOpacity = states.strokeOpacity;
    m_static.opacity = p->opacity();
    m_transformToNode = m_static.transform.inverted() * m_worldTransform;
}
 
void QSvgAnimatedStyle::fetchStyleState(const QSvgAbstractAnimation *animation, QSvgStyleState &currentStyle)
{
    bool replace = animation->animationType() == QSvgAbstractAnimation::CSS ? true :
                       (static_cast<const QSvgAnimateNode *>(animation))->additiveType() == QSvgAnimateNode::Replace;
 
    QList<QSvgAbstractAnimatedProperty *> properties = animation->properties();
    for (const QSvgAbstractAnimatedProperty *property : std::as_const(properties)) {
        if (property->propertyName() == QStringLiteral("fill")) {
            QBrush brush = currentStyle.fill;
            QColor brushColor = brush.color();
            QColor animatedColor = property->interpolatedValue().value<QColor>();
            QColor sumOrReplaceColor = replace ? animatedColor : sumValue(brushColor, animatedColor);
            brush.setColor(sumOrReplaceColor);
            currentStyle.fill = brush;
        } else if (property->propertyName() == QStringLiteral("stroke")) {
            QPen &pen = currentStyle.stroke;
            QBrush penBrush = pen.brush();
            QColor penColor = penBrush.color();
            QColor animatedColor = property->interpolatedValue().value<QColor>();
            QColor sumOrReplaceColor = replace ? animatedColor : sumValue(penColor, animatedColor);
            penBrush.setColor(sumOrReplaceColor);
            penBrush.setStyle(Qt::SolidPattern);
            pen.setBrush(penBrush);
        } else if (property->propertyName() == QStringLiteral("transform")) {
            QTransform animatedTransform = property->interpolatedValue().value<QTransform>();
            QTransform sumOrReplaceTransform = replace ? animatedTransform : animatedTransform * currentStyle.transform;
            currentStyle.transform = sumOrReplaceTransform;
        } else if (property->propertyName() == QStringLiteral("fill-opacity")) {
            qreal animatedFillOpacity = property->interpolatedValue().value<qreal>();
            qreal sumOrReplaceOpacity = replace ? animatedFillOpacity : sumValue(currentStyle.fillOpacity, animatedFillOpacity);
            currentStyle.fillOpacity = sumOrReplaceOpacity;
        } else if (property->propertyName() == QStringLiteral("stroke-opacity")) {
            qreal animatedStrokeOpacity = property->interpolatedValue().value<qreal>();
            qreal sumOrReplaceOpacity = replace ? animatedStrokeOpacity : sumValue(currentStyle.strokeOpacity, animatedStrokeOpacity);
            currentStyle.strokeOpacity = sumOrReplaceOpacity;
        } else if (property->propertyName() == QStringLiteral("opacity")) {
            qreal animatedOpacity = property->interpolatedValue().value<qreal>();
            qreal sumOrReplaceOpacity = replace ? animatedOpacity : sumValue(currentStyle.opacity, animatedOpacity);
            currentStyle.opacity = sumOrReplaceOpacity;
        } else if (property->propertyName() == QStringLiteral("offset-distance")) {
            qreal offsetDistance = property->interpolatedValue().value<qreal>();
            currentStyle.offsetDistance = offsetDistance;
        }
    }
}
 
void QSvgAnimatedStyle::applyStyle(QPainter *p, QSvgExtraStates &states, const QSvgStyleState &currentStyle)
{
    p->setBrush(currentStyle.fill);
    states.fillOpacity = currentStyle.fillOpacity;
    p->setPen(currentStyle.stroke);
    states.strokeOpacity = currentStyle.strokeOpacity;
    p->setOpacity(currentStyle.opacity);
 
    QTransform transform = currentStyle.transform;
    QTransform offset;
    if (m_static.offsetPath) {
        qreal offsetDistance = currentStyle.offsetDistance;
        qreal angle = m_static.offsetPath.value().angleAtPercent(offsetDistance);
        QPointF position = m_static.offsetPath.value().pointAtPercent(offsetDistance);
        offset.translate(position.x(), position.y());
 
        switch (m_static.offsetRotateType) {
        case QtSvg::OffsetRotateType::Auto:
            offset.rotate(-angle);
            break;
        case QtSvg::OffsetRotateType::Angle:
            offset.rotate(m_static.offsetRotate);
            break;
        case QtSvg::OffsetRotateType::AutoAngle:
            offset.rotate(m_static.offsetRotate - angle);
            break;
        case QtSvg::OffsetRotateType::Reverse:
            offset.rotate(180 - angle);
            break;
        case QtSvg::OffsetRotateType::ReverseAngle:
            offset.rotate(180 + m_static.offsetRotate - angle);
            break;
        }
    }
 
    QTransform combinedTransform = transform * offset * m_transformToNode;
    p->setWorldTransform(combinedTransform);
}
 
QT_END_NAMESPACE