COMPASSi/trunk/code/3rd/CCSReport_2/include/utils/svgtopdf.h

#pragma execution_character_set( "utf-8" )
#ifndef CCSSVGTOPDF_H
#define CCSSVGTOPDF_H
#include <QtSvg/QSvgRenderer>
#include <QFile>
#include <QPdfWriter>
#include <QPainter>
#include <QFont>
#include <QPageLayout>
#include <QPrinter>
//#include <QMatrix>
//#include <QStringRef>
#if QT_VERSION == QT_VERSION_CHECK(5, 15, 2)
#include <QtSvg/5.15.2/QtSvg/private/qsvgtinydocument_p.h>
#include <QtSvg/5.15.2/QtSvg/private/qsvggraphics_p.h>
#endif //  
#if QT_VERSION == QT_VERSION_CHECK(5, 15, 4)
#include <QtSvg/5.15.4/QtSvg/private/qsvgtinydocument_p.h>
#include <QtSvg/5.15.4/QtSvg/private/qsvggraphics_p.h>
#endif //  
#if QT_VERSION == QT_VERSION_CHECK(5, 12, 0)
#include <QtSvg/5.12.0/QtSvg/private/qsvgtinydocument_p.h>
#include <QtSvg/5.12.0/QtSvg/private/qsvggraphics_p.h>
#endif //  
#if QT_VERSION == QT_VERSION_CHECK(5, 15, 0)
#include <QtSvg/5.15.0/QtSvg/private/qsvgtinydocument_p.h>
#include <QtSvg/5.15.0/QtSvg/private/qsvggraphics_p.h>
#endif
#if QT_VERSION == QT_VERSION_CHECK(6, 3, 2)
#include <QtSvg/6.3.2/QtSvg/private/qtsvgexports_p.h>
#include <QtSvg/6.3.2/QtSvg/private/qsvgtinydocument_p.h>
#include <QtSvg/6.3.2/QtSvg/private/qsvggraphics_p.h>
#endif

class ReportSVGRender
{
public:
	void Render(QString strPath, QPainter* pPainter,QRectF bounds,int iOption = 0)
	{
        
        //std::string str = (strPath).toLocal8Bit();
        std::string str = (strPath).toStdString();
        const char* ch = str.c_str();
        FILE* pf = fopen(ch, "rb+");
        if (pf == nullptr) return;

        QFile file;
        file.open(pf, QIODevice::ReadOnly, QFileDevice::AutoCloseHandle);
        QByteArray data = file.readAll();
        if (iOption == 1)
        {
            QSvgRenderer* pRenderer = new QSvgRenderer(data);
            pRenderer->render(pPainter, bounds);
            file.close();
            fclose(pf);
            delete pRenderer;
        }
        else
        {
            QXmlStreamReader xml(data);
            QSvgTinyDocument* doc = QSvgTinyDocument::load(data);
            QSvgExtraStates states;
            WriteText(pPainter, doc, states, bounds, &xml);
            file.close();
            fclose(pf);
            delete doc;

       }
	}
    bool xmlToNode(QXmlStreamReader* xml, QSvgNode::Type type)
    {
        while (!xml->atEnd())
        {
            switch (xml->readNext()) {

            case QXmlStreamReader::StartElement:
            {
                QString localName = xml->name().toString();

                if ((type == QSvgNode::G && localName == "g")
                    || (type == QSvgNode::TEXT && localName == "text"))
                {
                    return true;
                }
            }
            default:
                break;
            }
        }
        return false;
    }
    void WriteNodeText(QPainter* pPainter, QSvgStructureNode* parentNode, QSvgExtraStates& states, QXmlStreamReader* xml)
    {
        QList<QSvgNode*> nodeList = parentNode->renderers();
        QList<QSvgNode*>::iterator itr = nodeList.begin();

        //QList
        parentNode->applyStyle(pPainter, states);
        while (itr != nodeList.end()) {
            QSvgNode* node = *itr;
            if ((node->isVisible()) && (node->displayMode() != QSvgNode::NoneMode))
            {
                if (node->type() == QSvgNode::TEXT)
                {
                    QSvgText* textNode = static_cast<QSvgText*>(node);

                    textNode->applyStyle(pPainter, states);

                    qreal oldOpacity = pPainter->opacity();
                    pPainter->setOpacity(oldOpacity * states.fillOpacity);

                    // Force the font to have a size of 100 pixels to avoid truncation problems
                    // when the font is very small.
                    qreal scale = 100.0 / pPainter->font().pointSizeF();
                    Qt::Alignment alignment = states.textAnchor;

                    QTransform oldTransform = pPainter->worldTransform();
                    pPainter->scale(1 / scale, 1 / scale);


                    QFont font = pPainter->font();
                    font.setPixelSize(font.pointSizeF() * scale);

                    pPainter->setFont(font);

                    xmlToNode(xml, QSvgNode::TEXT);

                    QXmlStreamAttributes  attributes = xml->attributes();
                    //const QStringRef x = attributes.value(QLatin1String("x"));
                    //const QStringRef y = attributes.value(QLatin1String("y"));

                    const QStringView x = attributes.value(QLatin1String("x"));
                    const QStringView y = attributes.value(QLatin1String("y"));
#if QT_VERSION == QT_VERSION_CHECK(5, 12, 0)
                    qreal nx = x.toString().toDouble() * scale;
                    qreal ny = y.toString().toDouble() * scale;
#else
                    qreal nx = x.toDouble() * scale;
                    qreal ny = y.toDouble() * scale;
#endif //  
                    QString text = xmlText(xml);
                    pPainter->drawText(QPointF(nx, ny), text);


                    pPainter->setWorldTransform(oldTransform, false);
                    pPainter->setOpacity(oldOpacity);
                    textNode->revertStyle(pPainter, states);
                }
                else  if (node->type() == QSvgNode::G)
                {
                    QSvgStructureNode* nodeG = static_cast<QSvgStructureNode*>(node);
                    xmlToNode(xml, QSvgNode::G);
                    WriteNodeText(pPainter, nodeG, states, xml);
                }
                else
                {
                    node->draw(pPainter, states);
                }
            }
            ++itr;
        }
        parentNode->revertStyle(pPainter, states);
    }
    void WriteText(QPainter* pPainter, QSvgTinyDocument* doc, QSvgExtraStates& states, QRectF& bounds, QXmlStreamReader* xml)
    {
        QRectF source = doc->viewBox();
        //QMatrix matrixSrc = pPainter->matrix();
        QTransform curTransform = pPainter->transform();
        if (source != bounds && !source.isNull()) {
            QTransform transform;
            transform.scale(bounds.width() / source.width(),
                bounds.height() / source.height());
            QRectF c2 = transform.mapRect(source);
            pPainter->translate(bounds.x() - c2.x(),
                bounds.y() - c2.y());
            pPainter->scale(bounds.width() / source.width(),
                bounds.height() / source.height());
        }

        WriteNodeText(pPainter, doc, states, xml);

        pPainter->setTransform(curTransform);
        //pPainter->setMatrix(matrixSrc);

    }
    void WriteText(QPainter* pPainter, QSvgTinyDocument* doc, QSvgExtraStates& states, QXmlStreamReader* xml)
    {
        WriteNodeText(pPainter, doc, states, xml);
    }
    QString xmlText(QXmlStreamReader* xml)
    {
        while (!xml->atEnd())
        {
            switch (xml->readNext()) {
            case QXmlStreamReader::Characters:
                return xml->text().toString();
                break;
            default:
                break;
            }
        }
        return "";
    }

};
#endif