qquickgenerator.cpp

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// Copyright (C) 2024 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 <QVarLengthArray>
 
#include "qquickgenerator_p.h"
#include "qquickgeneratoranimationprovider_p.h"
#include "qsvgvisitorimpl_p.h"
#include "qquicknodeinfo_p.h"
 
#include <private/qsgcurveprocessor_p.h>
#include <private/qquickshape_p.h>
#include <private/qquadpath_p.h>
#include <private/qquickitem_p.h>
#include <private/qquickimagebase_p_p.h>
 
#include <QtCore/qloggingcategory.h>
 
QT_BEGIN_NAMESPACE
 
Q_LOGGING_CATEGORY(lcQuickVectorImage, "qt.quick.vectorimage", QtWarningMsg)
 
QQuickGenerator::QQuickGenerator(const QQuickVectorImageSource &source,
                                 QQuickVectorImageGenerator::GeneratorFlags flags)
    : m_flags(flags)
    , m_source(source)
{
}
 
QQuickGenerator::~QQuickGenerator()
{
}
 
void QQuickGenerator::setAnimationProvider(std::unique_ptr<QQuickGeneratorAnimationProvider>)
{
}
 
void QQuickGenerator::setGeneratorFlags(QQuickVectorImageGenerator::GeneratorFlags flags)
{
    m_flags = flags;
}
 
QQuickVectorImageGenerator::GeneratorFlags QQuickGenerator::generatorFlags()
{
    return m_flags;
}
 
bool QQuickGenerator::generate()
{
    m_errorState = QQuickVectorImageGenerator::NoError;
    QSvgVisitorImpl loader(m_source, this, m_flags.testFlag(QQuickVectorImageGenerator::AssumeTrustedSource));
    if (!loader.doTraversal())
        m_errorState = QQuickVectorImageGenerator::LoadFailed;
    return m_errorState == QQuickVectorImageGenerator::NoError;
}
 
void QQuickGenerator::optimizePaths(const PathNodeInfo &info, const QRectF &overrideBoundingRect)
{
    if (Q_UNLIKELY(errorState()))
        return;
 
    QPainterPath pathCopy = info.path.defaultValue().value<QPainterPath>();
    pathCopy.setFillRule(info.fillRule);
 
    const QRectF &boundingRect = overrideBoundingRect.isNull() ? pathCopy.boundingRect() : overrideBoundingRect;
    if (m_flags.testFlag(QQuickVectorImageGenerator::GeneratorFlag::OptimizePaths) && !info.path.isAnimated()) {
        QQuadPath strokePath = QQuadPath::fromPainterPath(pathCopy);
        bool fillPathNeededClose;
        QQuadPath fillPath = strokePath.subPathsClosed(&fillPathNeededClose);
        const bool intersectionsFound = QSGCurveProcessor::solveIntersections(fillPath, false);
        fillPath.addCurvatureData();
        QSGCurveProcessor::solveOverlaps(fillPath);
        const bool compatibleStrokeAndFill = !fillPathNeededClose && !intersectionsFound;
 
        if (compatibleStrokeAndFill || m_flags.testFlag(QQuickVectorImageGenerator::GeneratorFlag::OutlineStrokeMode)) {
            outputShapePath(info, nullptr, &fillPath, QQuickVectorImageGenerator::FillAndStroke, boundingRect);
        } else {
            outputShapePath(info, nullptr, &fillPath, QQuickVectorImageGenerator::FillPath, boundingRect);
            outputShapePath(info, nullptr, &strokePath, QQuickVectorImageGenerator::StrokePath, boundingRect);
        }
    } else {
        outputShapePath(info, &pathCopy, nullptr, QQuickVectorImageGenerator::FillAndStroke, boundingRect);
    }
}
 
bool QQuickGenerator::isNodeVisible(const NodeInfo &info)
{
    if (!info.isVisible || !info.isDisplayed)
        return false;
 
    return true;
}
 
void QQuickGenerator::checkSanityLimit_helper(quint64 limit, QLatin1StringView limitObject)
{
    qCWarning(lcQuickVectorImage) << "QML generation of untrusted source" << m_source
                                  << "failed: exceeded sanity limit of" << limit << limitObject;
    m_errorState = QQuickVectorImageGenerator::SanityLimitsExceeded;
}
 
QT_END_NAMESPACE