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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
// Qt-Security score:significant reason:default
#include "qlottiestroke_p.h"
#include <QLoggingCategory>
#include "qlottieconstants_p.h"
QT_BEGIN_NAMESPACE
QLottieStroke::QLottieStroke(const QLottieStroke &other)
: QLottieShape(other)
{
m_opacity = other.m_opacity;
m_width = other.m_width;
m_color = other.m_color;
m_capStyle = other.m_capStyle;
m_joinStyle = other.m_joinStyle;
m_miterLimit = other.m_miterLimit;
m_dashOffset = other.m_dashOffset;
m_dashPattern = other.m_dashPattern;
m_currentDashPattern = other.m_currentDashPattern;
m_isDashed = other.m_isDashed;
m_isDashPatternAnimated = other.m_isDashPatternAnimated;
}
QLottieStroke::QLottieStroke(QLottieBase *parent)
{
setParent(parent);
}
QLottieBase *QLottieStroke::clone() const
{
return new QLottieStroke(*this);
}
void QLottieStroke::updateProperties(int frame)
{
m_opacity.update(frame);
m_width.update(frame);
m_color.update(frame);
if (m_isDashed) {
m_dashOffset.update(frame);
if (m_isDashPatternAnimated) {
for (auto &element : m_dashPattern)
element.update(frame);
updateDashPattern();
}
}
}
void QLottieStroke::render(QLottieRenderer &renderer) const
{
renderer.render(*this);
}
int QLottieStroke::parse(const QJsonObject &definition)
{
QLottieBase::parse(definition);
if (m_hidden)
return 0;
qCDebug(lcLottieQtLottieParser) << "QLottieStroke::QLottieStroke()" << m_name;
if (!checkRequiredKeys(definition, "Stroke"_L1, { "o"_L1, "w"_L1 }, m_name))
return -1;
int lineCap = definition.value("lc"_L1).toVariant().toInt();
switch (lineCap) {
case 1:
m_capStyle = Qt::FlatCap;
break;
case 2:
m_capStyle = Qt::RoundCap;
break;
case 3:
m_capStyle = Qt::SquareCap;
break;
default:
qCDebug(lcLottieQtLottieParser) << "Unknown line cap style in QLottieStroke";
}
int lineJoin = definition.value("lj"_L1).toVariant().toInt();
switch (lineJoin) {
case 1:
m_joinStyle = Qt::MiterJoin;
m_miterLimit = definition.value("ml"_L1).toVariant().toReal();
break;
case 2:
m_joinStyle = Qt::RoundJoin;
break;
case 3:
m_joinStyle = Qt::BevelJoin;
break;
default:
qCDebug(lcLottieQtLottieParser) << "Unknown line join style in QLottieStroke";
}
QJsonObject opacity = definition.value("o"_L1).toObject();
opacity = resolveExpression(opacity);
m_opacity.construct(opacity);
QJsonObject width = definition.value("w"_L1).toObject();
width = resolveExpression(width);
m_width.construct(width);
if (definition.contains("c"_L1)) {
QJsonObject color = definition.value("c"_L1).toObject();
color = resolveExpression(color);
m_color.construct(color);
}
const QJsonArray dashes = definition.value("d"_L1).toArray();
if (dashes.size()) {
for (const auto &element : dashes) {
QJsonObject dashSpec = element.toObject();
QJsonObject val = resolveExpression(dashSpec.value("v"_L1).toObject());
QString n = dashSpec.value("n"_L1).toString();
if (n == "o"_L1) {
m_dashOffset.construct(val);
} else if (n == "d"_L1 || n == "g"_L1) {
auto &newElement = m_dashPattern.emplaceBack();
newElement.construct(val);
if (newElement.isAnimated())
m_isDashPatternAnimated = true;
}
}
if (m_dashPattern.size() > 0) {
m_isDashed = true;
if (m_width.isAnimated())
m_isDashPatternAnimated = true;
updateDashPattern();
}
}
return 0;
}
QPen QLottieStroke::pen() const
{
qreal width = m_width.value();
if (qFuzzyIsNull(width) && !m_width.isAnimated())
return QPen(Qt::NoPen);
QPen pen;
pen.setColor(getColor());
pen.setWidthF(width);
pen.setCapStyle(m_capStyle);
pen.setJoinStyle(m_joinStyle);
pen.setMiterLimit(m_miterLimit);
if (m_isDashed) {
pen.setDashOffset(m_dashOffset.value() / width);
pen.setDashPattern(m_currentDashPattern);
}
return pen;
}
QColor QLottieStroke::getColor() const
{
QVector4D cVec = m_color.value();
QColor color;
qreal r = static_cast<qreal>(cVec.x());
qreal g = static_cast<qreal>(cVec.y());
qreal b = static_cast<qreal>(cVec.z());
qreal a = static_cast<qreal>(cVec.w());
color.setRgbF(r, g, b, a);
return color;
}
qreal QLottieStroke::opacity() const
{
return m_opacity.value();
}
void QLottieStroke::updateDashPattern()
{
m_currentDashPattern.clear();
const qreal strokeWidth = m_width.value();
if (qFuzzyIsNull(strokeWidth))
return;
bool isDash = true;
for (const auto &element : std::as_const(m_dashPattern)) {
qreal elementLength = element.value();
if (isDash && (m_capStyle != Qt::FlatCap) && (elementLength == 0))
elementLength = qreal(0.01); // pseudo 0-length line, to render line caps
m_currentDashPattern.append(elementLength / strokeWidth);
isDash = !isDash;
}
if (m_currentDashPattern.size() % 2)
m_currentDashPattern.append(m_currentDashPattern);
}
QT_END_NAMESPACE