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cordsacDec. 5, 2017, 4:37 p.m.

Problem Occurred when open SVG file

Qt, Svg Reader, C++

In my project which can create rectangle and oval shape like this image .I use this code to open ellipses and rectangles.Which open rectangles and oval/ellipse properly. But when I use this types which not open properly.here with I attach sample SVG file.can you give me a solution to solve this problem.


This is part of SVG file. 

<g fill="#ffffff" fill-opacity="1" stroke="#00ff00" stroke-opacity="1" stroke-width="1" stroke-linecap="square" stroke-linejoin="bevel" transform="matrix(1,0,0,1,284,160)"
font-family="MS Shell Dlg 2" font-size="7.8" font-weight="400" font-style="normal" 
>
<rect x="-20" y="-10" width="100" height="100"/>
<rect x="-15" y="-5" width="90" height="90"/>
</g>

This is my code (from this article) 

        QDomElement rectangle = gNode.firstChildElement("rect");
        if (!rectangle.isNull()){
            VERectangle *rect = new VERectangle();
            auto gElement = gNode.toElement();
            rect->setRect(rectangle.attribute("x").toInt(),
                          rectangle.attribute("y").toInt(),
                          rectangle.attribute("width").toInt(),
                          rectangle.attribute("height").toInt());

            QString fill = gElement.attribute("fill", "#ffffff");
            if(fill.contains("url(#gradient")){
                fill.replace(QString("url(#gradient"), QString(""));
                fill.replace(QString(")"), QString(""));
                QLinearGradient g = gradientList.at(fill.toInt() - 1);
                auto tmpRect = rect->rect();
                g.setStart(tmpRect.left() + tmpRect.width()/2,tmpRect.top());
                g.setFinalStop(tmpRect.left() + tmpRect.width()/2,tmpRect.bottom());
                rect->setBrush(QBrush(g));
            } else {
                QColor fillColor(gElement.attribute("fill", "#ffffff"));
                fillColor.setAlphaF(gElement.attribute("fill-opacity","0").toFloat());
                rect->setBrush(QBrush(fillColor));
            }

            QColor strokeColor(gElement.attribute("stroke", "#000000"));
            strokeColor.setAlphaF(gElement.attribute("stroke-opacity").toFloat());

            QString transString = gElement.attribute("transform");
            transString.replace(QString("matrix("),QString(""));
            transString.replace(QString(")"),QString(""));
            QStringList transList = transString.split(",");

            QTransform trans(rect->transform());

            qreal m11 = trans.m11();    // Horizontal scaling
            qreal m12 = trans.m12();    // Vertical shearing
            qreal m13 = trans.m13();    // Horizontal Projection
            qreal m21 = trans.m21();    // Horizontal shearing
            qreal m22 = trans.m22();    // vertical scaling
            qreal m23 = trans.m23();    // Vertical Projection
            qreal m31 = trans.m31();    // Horizontal Position (DX)
            qreal m32 = trans.m32();    // Vertical Position (DY)
            qreal m33 = trans.m33();    // Addtional Projection Factor

            m11 = transList.at(0).toFloat();
            m12 = transList.at(1).toFloat();
            m21 = transList.at(2).toFloat();
            m22 = transList.at(3).toFloat();
            m31 = transList.at(4).toFloat();
            m32 = transList.at(5).toFloat();

            trans.setMatrix(m11,m12,m13,m21,m22,m23,m31,m32,m33);
            rect->setTransform(trans);
            rect->setPen(QPen(strokeColor,gElement.attribute("stroke-width", "0").toInt()));

            graphicsList.append(rect);
            continue;
        }

 // for_ovel

        QDomElement ovel = gNode.firstChildElement("ellipse");
        if (!ovel.isNull()){
            ovalshape *ellipseItem = new ovalshape();
            auto oElement = gNode.toElement();
            ellipseItem->setRect(ovel.attribute("cx").toFloat() - ovel.attribute("rx").toFloat(),
                                 ovel.attribute("cy").toFloat() - ovel.attribute("rx").toFloat(),
                                 ovel.attribute("rx").toFloat() * 2,
                                 ovel.attribute("ry").toFloat() * 2);

            QString fill = oElement.attribute("fill", "#ffffff");
            if(fill.contains("url(#gradient")){
                fill.replace(QString("url(#gradient"), QString(""));
                fill.replace(QString(")"), QString(""));
                QLinearGradient g = gradientList.at(fill.toInt() - 1);
                auto tmpRect = ellipseItem->rect();
                g.setStart(tmpRect.left() + tmpRect.width()/2,tmpRect.top());
                g.setFinalStop(tmpRect.left() + tmpRect.width()/2,tmpRect.bottom());
                ellipseItem->setBrush(QBrush(g));
            } else {
                QColor fillColor(oElement.attribute("fill", "#ffffff"));
                fillColor.setAlphaF(oElement.attribute("fill-opacity","0").toFloat());
                ellipseItem->setBrush(QBrush(fillColor));
            }

            QColor strokeColor(oElement.attribute("stroke", "#000000"));
            strokeColor.setAlphaF(oElement.attribute("stroke-opacity").toFloat());

            QString transString = oElement.attribute("transform");
            transString.replace(QString("matrix("),QString(""));
            transString.replace(QString(")"),QString(""));
            QStringList transList = transString.split(",");

            QTransform trans(ellipseItem->transform());

            qreal m11 = trans.m11();    // Horizontal scaling
            qreal m12 = trans.m12();    // Vertical shearing
            qreal m13 = trans.m13();    // Horizontal Projection
            qreal m21 = trans.m21();    // Horizontal shearing
            qreal m22 = trans.m22();    // vertical scaling
            qreal m23 = trans.m23();    // Vertical Projection
            qreal m31 = trans.m31();    // Horizontal Position (DX)
            qreal m32 = trans.m32();    // Vertical Position (DY)
            qreal m33 = trans.m33();    // Addtional Projection Factor

            m11 = transList.at(0).toFloat();
            m12 = transList.at(1).toFloat();
            m21 = transList.at(2).toFloat();
            m22 = transList.at(3).toFloat();
            m31 = transList.at(4).toFloat();
            m32 = transList.at(5).toFloat();

            trans.setMatrix(m11,m12,m13,m21,m22,m23,m31,m32,m33);
            ellipseItem->setTransform(trans);
            ellipseItem->setPen(QPen(strokeColor,oElement.attribute("stroke-width", "0").toInt()));

            graphicsList.append(ellipseItem);
            continue;
        }


sample.svg
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