Merged Import from CFF and export to CFF fixes.

plugins/cffadaptor/src/UBCFFAdaptor.cpp

@@ -550,8 +550,8 @@ QDomElement UBCFFAdaptor::UBToCFFConverter::parsePage(const QString &pageFileNam
                 pageFile.close();
                 return QDomElement();
             }
-        } else if (tagname == tUBZGroup) {
-            group = parseGroupPageSection(nextTopElement);
+        } else if (tagname == tUBZGroups) {
+            group = parseGroupsPageSection(nextTopElement);
             if (group.isNull()) {
                 qDebug() << "Page doesn't contains any groups.";
                 pageFile.close();
@@ -634,6 +634,7 @@ QDomElement UBCFFAdaptor::UBToCFFConverter::parseSvgPageSection(const QDomElemen
         else if (tagName == tUBZLine)          parseUBZLine(nextElement, svgElements);
         else if (tagName == tUBZPolygon)       parseUBZPolygon(nextElement, svgElements);
         else if (tagName == tUBZPolyline)      parseUBZPolyline(nextElement, svgElements);
+        else if (tagName == tUBZGroups)        parseGroupsPageSection(nextElement);
 
         nextElement = nextElement.nextSiblingElement();
     }
@@ -694,12 +695,34 @@ bool UBCFFAdaptor::UBToCFFConverter::writeExtendedIwbSection()
 // extended element options
 // editable, background, locked are supported for now
 
-QDomElement UBCFFAdaptor::UBToCFFConverter::parseGroupPageSection(const QDomElement &element)
+QDomElement UBCFFAdaptor::UBToCFFConverter::parseGroupsPageSection(const QDomElement &groupRoot)
 {
 //    First sankore side implementation needed. TODO in Sankore 1.5
-    Q_UNUSED(element)
+    if (!groupRoot.hasChildNodes()) {
+        qDebug() << "Group root is empty";
+        return QDomElement();
+    }
+
+    QDomElement groupElement = groupRoot.firstChildElement();
+
+    while (!groupElement.isNull()) {
+        QDomElement extendedElement = mDataModel->createElementNS(iwbNS, groupElement.tagName());
+        QDomElement groupChildElement = groupElement.firstChildElement();
+        while (!groupChildElement.isNull()) {
+            QDomElement extSubElement = mDataModel->createElementNS(iwbNS, groupChildElement.tagName());
+            extSubElement.setAttribute(aRef, groupChildElement.attribute(aID, QUuid().toString()));
+            extendedElement.appendChild(extSubElement);
+
+            groupChildElement = groupChildElement.nextSiblingElement();
+        }
+
+        mExtendedElements.append(extendedElement);
+
+        groupElement = groupElement.nextSiblingElement();
+    }
+
     qDebug() << "parsing ubz group section";
-    return QDomElement();
+    return groupRoot;
 }
 
 QString UBCFFAdaptor::UBToCFFConverter::getDstContentFolderName(const QString &elementType)
@@ -1250,6 +1273,19 @@ bool UBCFFAdaptor::UBToCFFConverter::setCFFAttribute(const QString &attributeNam
         {
             setGeometryFromUBZ(ubzElement, svgElement);
         }
+        else
+            if (attributeName.contains(aUBZUuid))
+            {
+
+                QString parentId = ubzElement.attribute(aUBZParent);
+                QString id;
+                if (!parentId.isEmpty())
+                    id = "{" + parentId + "}" + "{" + ubzElement.attribute(aUBZUuid)+"}";
+                else
+                    id = "{" + ubzElement.attribute(aUBZUuid)+"}";
+
+                svgElement.setAttribute(aID, id);
+            }
         else 
             if (attributeName.contains(aUBZHref)||attributeName.contains(aSrc))
             {
@@ -1799,7 +1835,10 @@ bool UBCFFAdaptor::UBToCFFConverter::parseUBZPolygon(const QDomElement &element,
 
         if (0 < iwbElementPart.attributes().count())
         {   
-            QString id = QUuid::createUuid().toString();
+            QString id = svgElementPart.attribute(aUBZUuid);
+            if (id.isEmpty())
+                id = QUuid::createUuid().toString();
+
             svgElementPart.setAttribute(aID, id);
             iwbElementPart.setAttribute(aRef, id);     
 

plugins/cffadaptor/src/UBCFFAdaptor.h

@@ -63,7 +63,7 @@ private:
         QDomElement parseSvgPageSection(const QDomElement &element);
         void writeQDomElementToXML(const QDomNode &node);
         bool writeExtendedIwbSection();
-        QDomElement parseGroupPageSection(const QDomElement &element);
+        QDomElement parseGroupsPageSection(const QDomElement &groupRoot);
 
         bool createBackground(const QDomElement &element, QMultiMap<int, QDomElement> &dstSvgList);
         QString createBackgroundImage(const QDomElement &element, QSize size);

plugins/cffadaptor/src/UBCFFConstants.h

@@ -28,6 +28,7 @@ const QString tIWBPageSet = "pageset";
 const QString tId = "id";
 const QString tElement = "element";
 const QString tUBZGroup = "group";
+const QString tUBZGroups = "groups";
 const QString tUBZG = "g";
 const QString tUBZPolygon = "polygon";
 const QString tUBZPolyline = "polyline";
@@ -67,6 +68,7 @@ const QString aBackground = "background";
 const QString aCrossedBackground = "crossed-background";
 const QString aUBZType = "type";
 const QString aUBZUuid = "uuid";
+const QString aUBZParent = "parent";
 const QString aFill = "fill"; // IWB attribute contans color to fill
 
 const QString aID = "id";   // ID of any svg element can be placed in to iwb section
@@ -334,8 +336,10 @@ stroke-lineshape-end \
 const QString ubzElementAttributesToConvert(" \
 xlink:href, \
 src, \
-transform \
-");
+transform, \
+uuid \
+"
+);
 
 // additional attributes. Have references in SVG section.
 const QString svgElementAttributes(" \
@@ -376,4 +380,4 @@ struct UBItemLayerType
     };
 };
 
-#endif // UBCFFCONSTANTS_H
+#endif // UBCFFCONSTANTS_H

src/adaptors/UBCFFSubsetAdaptor.cpp

@@ -16,6 +16,7 @@
 #include <QSvgGenerator>
 #include <QSvgRenderer>
 #include <QPixmap>
+#include <QMap>
 
 #include "core/UBPersistenceManager.h"
 
@@ -248,6 +249,11 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgRect(const QDomElement &elem
     painter.end();
 
     UBGraphicsSvgItem *svgItem = mCurrentScene->addSvg(QUrl::fromLocalFile(generator->fileName()));
+   
+    QString uuid = QUuid::createUuid().toString();
+    mRefToUuidMap.insert(element.attribute(aId), uuid);
+    svgItem->setUuid(QUuid(uuid));
+
     QTransform transform;
     QString textTransform = element.attribute(aTransform);
 
@@ -298,6 +304,11 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgEllipse(const QDomElement &e
     painter.end();
 
     UBGraphicsSvgItem *svgItem = mCurrentScene->addSvg(QUrl::fromLocalFile(generator->fileName()));
+
+    QString uuid = QUuid::createUuid().toString();
+    mRefToUuidMap.insert(element.attribute(aId), uuid);
+    svgItem->setUuid(QUuid(uuid));
+
     QTransform transform;
     QString textTransform = element.attribute(aTransform);
 
@@ -373,37 +384,65 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgPolygon(const QDomElement &e
     brush.setColor(fillColor);
     brush.setStyle(Qt::SolidPattern);
 
-    QSvgGenerator *generator = createSvgGenerator(width + pen.width(), height + pen.width());
-    QPainter painter;
+ 
+    QUuid itemUuid(element.attribute(aId).right(QUuid().toString().length()));
+    QUuid itemGroupUuid(element.attribute(aId).left(QUuid().toString().length()-1));
+    if (!itemUuid.isNull() && (itemGroupUuid!=itemUuid)) // reimported from UBZ
+    {
+        UBGraphicsPolygonItem *graphicsPolygon = mCurrentScene->polygonToPolygonItem(polygon);
 
-    painter.begin(generator); //drawing to svg tmp file
+        graphicsPolygon->setBrush(brush);
 
-    painter.translate(pen.widthF() / 2 - x1, pen.widthF() / 2 - y1);
-    painter.setBrush(brush);
-    painter.setPen(pen);
-    painter.drawPolygon(polygon);
+        QTransform transform;
+        QString textTransform = element.attribute(aTransform);
 
-    painter.end();
+        graphicsPolygon->resetTransform();
+        if (!textTransform.isNull()) {
+            transform = transformFromString(textTransform, graphicsPolygon);
+        }
+        mCurrentScene->addItem(graphicsPolygon);
 
-    //add resulting svg file to scene
-    UBGraphicsSvgItem *svgItem = mCurrentScene->addSvg(QUrl::fromLocalFile(generator->fileName()));
-    QTransform transform;
-    QString textTransform = element.attribute(aTransform);
+        graphicsPolygon->setUuid(itemUuid);
+        mRefToUuidMap.insert(element.attribute(aId), itemUuid);
 
-    svgItem->resetTransform();
-    if (!textTransform.isNull()) {
-        transform = transformFromString(textTransform, svgItem);
     }
-    repositionSvgItem(svgItem, width +strokeWidth, height + strokeWidth, x1 - strokeWidth/2 + transform.m31(), y1 + strokeWidth/2 + transform.m32(), transform);
-    hashSceneItem(element, svgItem);
-
-    if (mGSectionContainer)
+    else // single CFF
     {
-        addItemToGSection(svgItem);
-    }
+        QSvgGenerator *generator = createSvgGenerator(width + pen.width(), height + pen.width());
+        QPainter painter;
 
-    delete generator;
+        painter.begin(generator); //drawing to svg tmp file
+
+        painter.translate(pen.widthF() / 2 - x1, pen.widthF() / 2 - y1);
+        painter.setBrush(brush);
+        painter.setPen(pen);
+        painter.drawPolygon(polygon);
+
+        painter.end();
+
+        //add resulting svg file to scene
+        UBGraphicsSvgItem *svgItem = mCurrentScene->addSvg(QUrl::fromLocalFile(generator->fileName()));
+        QTransform transform;
+        QString textTransform = element.attribute(aTransform);
+        
+        QUuid uuid = QUuid::createUuid().toString();
+        mRefToUuidMap.insert(element.attribute(aId), uuid);
+        svgItem->setUuid(uuid);
+
+        svgItem->resetTransform();
+        if (!textTransform.isNull()) {
+            transform = transformFromString(textTransform, svgItem);
+        }
+        repositionSvgItem(svgItem, width +strokeWidth, height + strokeWidth, x1 - strokeWidth/2 + transform.m31(), y1 + strokeWidth/2 + transform.m32(), transform);
+        hashSceneItem(element, svgItem);
 
+        if (mGSectionContainer)
+        {
+            addItemToGSection(svgItem);
+        }
+
+        delete generator;
+    }
     return true;
 }
 bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgPolyline(const QDomElement &element)
@@ -441,6 +480,7 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgPolyline(const QDomElement &
     //bounding rect lef top corner coordinates
     qreal x1 = polygon.boundingRect().topLeft().x();
     qreal y1 = polygon.boundingRect().topLeft().y();
+
     //bounding rect dimensions
     qreal width = polygon.boundingRect().width();
     qreal height = polygon.boundingRect().height();
@@ -458,35 +498,72 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgPolyline(const QDomElement &
     pen.setColor(strokeColor);
     pen.setWidth(strokeWidth);
 
-    QSvgGenerator *generator = createSvgGenerator(width + pen.width(), height + pen.width());
-    QPainter painter;
+    QBrush brush;
+    brush.setColor(strokeColor);
+    brush.setStyle(Qt::SolidPattern);
 
-    painter.begin(generator); //drawing to svg tmp file
+    QUuid itemUuid(element.attribute(aId).right(QUuid().toString().length()));
+    QUuid itemGroupUuid(element.attribute(aId).left(QUuid().toString().length()-1));
+    if (!itemUuid.isNull() && (itemGroupUuid!=itemUuid)) // reimported from UBZ
+    {
+        UBGraphicsPolygonItem *graphicsPolygon = new UBGraphicsPolygonItem(polygon);
 
-    painter.translate(pen.widthF()/2 - x1, pen.widthF()/2- y1);
-    painter.setPen(pen);
-    painter.drawPolyline(polygon);
+        UBGraphicsStroke *stroke = new UBGraphicsStroke();
+        graphicsPolygon->setStroke(stroke);
 
-    painter.end();
+        graphicsPolygon->setBrush(brush);
+        QTransform transform;
+        QString textTransform = element.attribute(aTransform);
 
-    //add resulting svg file to scene
-    UBGraphicsSvgItem *svgItem = mCurrentScene->addSvg(QUrl::fromLocalFile(generator->fileName()));
-    QTransform transform;
-    QString textTransform = element.attribute(aTransform);
+        graphicsPolygon->resetTransform();
+        if (!textTransform.isNull()) {
+            transform = transformFromString(textTransform, graphicsPolygon);
+        }
+        mCurrentScene->addItem(graphicsPolygon);
 
-    svgItem->resetTransform();
-    if (!textTransform.isNull()) {
-        transform = transformFromString(textTransform, svgItem);
-    }
-    repositionSvgItem(svgItem, width +strokeWidth, height + strokeWidth, x1 + transform.m31() - strokeWidth/2, y1 + transform.m32() + strokeWidth/2, transform);
-    hashSceneItem(element, svgItem);
+        graphicsPolygon->setUuid(itemUuid);
+        mRefToUuidMap.insert(element.attribute(aId), itemUuid);
 
-    if (mGSectionContainer)
+    }
+    else // simple CFF
     {
-        addItemToGSection(svgItem);
+        QSvgGenerator *generator = createSvgGenerator(width + pen.width(), height + pen.width());
+        QPainter painter;
+
+        painter.begin(generator); //drawing to svg tmp file
+
+        painter.translate(pen.widthF() / 2 - x1, pen.widthF() / 2 - y1);
+        painter.setBrush(brush);
+        painter.setPen(pen);
+        painter.drawPolygon(polygon);
+
+        painter.end();
+
+        //add resulting svg file to scene
+        UBGraphicsSvgItem *svgItem = mCurrentScene->addSvg(QUrl::fromLocalFile(generator->fileName()));
+        
+        QString uuid = QUuid::createUuid().toString();
+        mRefToUuidMap.insert(element.attribute(aId), uuid);
+        svgItem->setUuid(QUuid(uuid));
+
+        QTransform transform;
+        QString textTransform = element.attribute(aTransform);
+
+        svgItem->resetTransform();
+        if (!textTransform.isNull()) {
+            transform = transformFromString(textTransform, svgItem);
+        }
+        repositionSvgItem(svgItem, width +strokeWidth, height + strokeWidth, x1 - strokeWidth/2 + transform.m31(), y1 + strokeWidth/2 + transform.m32(), transform);
+        hashSceneItem(element, svgItem);
+
+        if (mGSectionContainer)
+        {
+            addItemToGSection(svgItem);
+        }
+
+        delete generator;
     }
 
-    delete generator;
 
     return true;
 }
@@ -621,6 +698,10 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgText(const QDomElement &elem
     //add resulting svg file to scene
     UBGraphicsSvgItem *svgItem = mCurrentScene->addSvg(QUrl::fromLocalFile(generator->fileName()));
 
+    QString uuid = QUuid::createUuid().toString();
+    mRefToUuidMap.insert(element.attribute(aId), uuid);
+    svgItem->setUuid(QUuid(uuid));
+
     svgItem->resetTransform();
     repositionSvgItem(svgItem, width, height, x + transform.m31(), y + transform.m32(), transform);
     hashSceneItem(element, svgItem);
@@ -734,6 +815,10 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgTextarea(const QDomElement &
     UBGraphicsTextItem *svgItem = mCurrentScene->addTextHtml(doc.toHtml());
     svgItem->resize(width, height);
 
+    QString uuid = QUuid::createUuid().toString();
+    mRefToUuidMap.insert(element.attribute(aId), uuid);
+    svgItem->setUuid(QUuid(uuid));
+
     QTransform transform;
     QString textTransform = element.attribute(aTransform);
 
@@ -783,6 +868,11 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgImage(const QDomElement &ele
     }
 
    UBGraphicsPixmapItem *pixItem = mCurrentScene->addPixmap(pix, NULL);
+
+   QString uuid = QUuid::createUuid().toString();
+   mRefToUuidMap.insert(element.attribute(aId), uuid);
+   pixItem->setUuid(QUuid(uuid));
+
    QTransform transform;
    QString textTransform = element.attribute(aTransform);
 
@@ -830,6 +920,10 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgFlash(const QDomElement &ele
     UBGraphicsWidgetItem *flashItem = mCurrentScene->addW3CWidget(QUrl::fromLocalFile(flashUrl));
     flashItem->setSourceUrl(urlPath);
 
+    QString uuid = QUuid::createUuid().toString();
+    mRefToUuidMap.insert(element.attribute(aId), uuid);
+    flashItem->setUuid(QUuid(uuid));
+
     QTransform transform;
     QString textTransform = element.attribute(aTransform);
 
@@ -867,14 +961,15 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgAudio(const QDomElement &ele
         concreteUrl = QUrl::fromLocalFile(audioPath);
     }
 
-    QUuid uuid = QUuid::createUuid();
+    QString uuid = QUuid::createUuid().toString();
+    mRefToUuidMap.insert(element.attribute(aId), uuid);
 
     QString destFile;
     bool b = UBPersistenceManager::persistenceManager()->addFileToDocument(
             mCurrentScene->document(), 
             concreteUrl.toLocalFile(), 
             UBPersistenceManager::audioDirectory,
-            uuid,
+            QUuid(uuid),
             destFile);
     if (!b)
     {
@@ -883,6 +978,7 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgAudio(const QDomElement &ele
     concreteUrl = QUrl::fromLocalFile(destFile);
     
     UBGraphicsMediaItem *audioItem = mCurrentScene->addAudio(concreteUrl, false);
+
     QTransform transform;
     QString textTransform = parentOfAudio.attribute(aTransform);
 
@@ -920,15 +1016,15 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgVideo(const QDomElement &ele
         concreteUrl = QUrl::fromLocalFile(videoPath);
     }
 
-    QUuid uuid = QUuid::createUuid();
-
+    QString uuid = QUuid::createUuid().toString();
+    mRefToUuidMap.insert(element.attribute(aId), uuid);
 
     QString destFile;
     bool b = UBPersistenceManager::persistenceManager()->addFileToDocument(
             mCurrentScene->document(), 
             concreteUrl.toLocalFile(), 
             UBPersistenceManager::videoDirectory,
-            uuid,
+            QUuid(uuid),
             destFile);
     if (!b)
     {
@@ -937,6 +1033,7 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgVideo(const QDomElement &ele
     concreteUrl = QUrl::fromLocalFile(destFile);
 
     UBGraphicsMediaItem *videoItem = mCurrentScene->addVideo(concreteUrl, false);
+
     QTransform transform;
     QString textTransform = element.attribute(aTransform);
 
@@ -980,8 +1077,8 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgElement(const QDomElement &p
 {
     QString tagName = parent.tagName();
     if (parent.namespaceURI() != svgNS) {
-        qDebug() << "Incorrect namespace, error at content file, line number" << parent.lineNumber();
-        return false;
+        qWarning() << "Incorrect namespace, error at content file, line number" << parent.lineNumber();
+        //return false;
     }
 
     if      (tagName == tG          &&  !parseGSection(parent))             return false;
@@ -1027,8 +1124,8 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvgPageset(const QDomElement &p
 bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseIwbMeta(const QDomElement &element)
 {
     if (element.namespaceURI() != iwbNS) {
-        qDebug() << "incorrect meta namespace, incorrect document";
-        return false;
+        qWarning() << "incorrect meta namespace, incorrect document";
+        //return false;
     }
 
     return true;
@@ -1036,8 +1133,8 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseIwbMeta(const QDomElement &elem
 bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvg(const QDomElement &svgSection)
 {
     if (svgSection.namespaceURI() != svgNS) {
-        qDebug() << "incorrect svg namespace, incorrect document";
-        return false;
+        qWarning() << "incorrect svg namespace, incorrect document";
+       // return false;
     }
 
     parseSvgSectionAttr(svgSection);
@@ -1052,15 +1149,92 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseSvg(const QDomElement &svgSecti
     return true;
 }
 
-bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseIwbGroup(QDomElement &parent)
+UBGraphicsGroupContainerItem *UBCFFSubsetAdaptor::UBCFFSubsetReader::parseIwbGroup(QDomElement &parent)
 {
     //TODO. Create groups from elements parsed by parseIwbElement() function
     if (parent.namespaceURI() != iwbNS) {
-        qDebug() << "incorrect iwb group namespace, incorrect document";
-        return false;
+        qWarning() << "incorrect iwb group namespace, incorrect document";
+      //  return false;
     }
 
-    return true;
+    UBGraphicsGroupContainerItem *group = new UBGraphicsGroupContainerItem();
+    QMultiMap<QString, UBGraphicsPolygonItem *> strokesGroupsContainer;    
+    QList<QGraphicsItem *> groupContainer;    
+    QString currentStrokeIdentifier;
+
+    QDomElement currentStrokeElement = parent.firstChildElement();    
+    while (!currentStrokeElement.isNull())
+    {
+        if (tGroup == currentStrokeElement.tagName())
+            group->addToGroup(parseIwbGroup(currentStrokeElement));
+        else
+        {
+            
+            QString ref = currentStrokeElement.attribute(aRef);
+            QString uuid = mRefToUuidMap[ref];
+            if (!uuid.isEmpty())
+            {
+                if (ref.size() > QUuid().toString().length()) // create stroke group
+                {              
+                    currentStrokeIdentifier = ref.left(QUuid().toString().length()-1);
+                    UBGraphicsPolygonItem *strokeByUuid = qgraphicsitem_cast<UBGraphicsPolygonItem *>(mCurrentScene->itemForUuid(QUuid(ref.right(QUuid().toString().length()))));
+
+                    if (strokeByUuid)
+                        strokesGroupsContainer.insert(currentStrokeIdentifier, strokeByUuid);
+                }
+                else // single elements in group
+                    groupContainer.append(mCurrentScene->itemForUuid(QUuid(uuid)));
+            }
+        }
+        currentStrokeElement = currentStrokeElement.nextSiblingElement();
+    }
+
+
+
+    foreach (QString key, strokesGroupsContainer.keys().toSet())
+    {
+        UBGraphicsStrokesGroup* pStrokesGroup = new UBGraphicsStrokesGroup();
+        UBGraphicsStroke *currentStroke = new UBGraphicsStroke();
+        foreach(UBGraphicsPolygonItem* poly, strokesGroupsContainer.values(key))
+        {
+            if (poly)
+            {
+                mCurrentScene->removeItem(poly);
+                mCurrentScene->removeItemFromDeletion(poly);
+                poly->setStrokesGroup(pStrokesGroup);
+                poly->setStroke(currentStroke);
+                pStrokesGroup->addToGroup(poly);
+            }
+        }
+        if (currentStroke->polygons().empty())
+            delete currentStroke;
+
+        if (pStrokesGroup->childItems().count())
+            mCurrentScene->addItem(pStrokesGroup);
+        else
+            delete pStrokesGroup;
+
+        if (pStrokesGroup)
+        {
+            QGraphicsItem *strokeGroup = qgraphicsitem_cast<QGraphicsItem *>(pStrokesGroup);
+            groupContainer.append(strokeGroup);
+        }
+    }
+
+    foreach(QGraphicsItem* item, groupContainer)
+        group->addToGroup(item);
+
+    if (group->childItems().count())
+    {
+        mCurrentScene->addItem(group);
+
+        if (1 == group->childItems().count())
+        {
+            group->destroy(false);
+        }
+    }
+
+    return group;
 }
 
 bool UBCFFSubsetAdaptor::UBCFFSubsetReader::strToBool(QString str)
@@ -1071,8 +1245,8 @@ bool UBCFFSubsetAdaptor::UBCFFSubsetReader::strToBool(QString str)
 bool UBCFFSubsetAdaptor::UBCFFSubsetReader::parseIwbElement(QDomElement &element)
 {
     if (element.namespaceURI() != iwbNS) {
-        qDebug() << "incorrect iwb element namespace, incorrect document";
-        return false;
+        qWarning() << "incorrect iwb element namespace, incorrect document";
+      //  return false;
     }
 
     bool locked = false;

src/adaptors/UBCFFSubsetAdaptor.h

@@ -74,6 +74,7 @@ private:
         QDomDocument mDOMdoc;
         QDomNode mCurrentDOMElement;
         QHash<QString, UBGraphicsItem*> persistedItems;
+        QMap<QString, QString> mRefToUuidMap;
         QDir mTmpFlashDir;
 
         void addItemToGSection(QGraphicsItem *item);
@@ -102,7 +103,7 @@ private:
         inline bool parseSvgFlash(const QDomElement &element);
         inline bool parseSvgAudio(const QDomElement &element);
         inline bool parseSvgVideo(const QDomElement &element);
-        inline bool parseIwbGroup(QDomElement &parent);
+        inline UBGraphicsGroupContainerItem *parseIwbGroup(QDomElement &parent);
         inline bool parseIwbElement(QDomElement &element);
         inline void parseTSpan(const QDomElement &parent, QPainter &painter
                                , qreal &curX, qreal &curY, qreal &width, qreal &height, qreal &linespacing, QRectF &lastDrawnTextBoundingRect

src/adaptors/UBSvgSubsetAdaptor.cpp

@@ -48,6 +48,7 @@
 
 #include "frameworks/UBFileSystemUtils.h"
 #include "frameworks/UBStringUtils.h"
+#include "frameworks/UBFileSystemUtils.h"
 
 #include "core/UBSettings.h"
 #include "core/UBSetting.h"
@@ -79,6 +80,7 @@ const QString UBSvgSubsetAdaptor::sFormerUniboardDocumentNamespaceUri = "http://
 
 const QString tElement = "element";
 const QString tGroup = "group";
+const QString tStrokeGroup = "strokeGroup";
 const QString tGroups = "groups";
 const QString aId = "id";
 
@@ -553,6 +555,10 @@ UBGraphicsScene* UBSvgSubsetAdaptor::UBSvgSubsetReader::loadScene()
 
                 if (polygonItem)
                 {
+                    mScene->addItem(polygonItem);
+
+                    polygonItem->setUuid(uuidFromSvg);
+
                     if (annotationGroup)
                     {
                         polygonItem->setStroke(annotationGroup);
@@ -989,31 +995,45 @@ UBGraphicsScene* UBSvgSubsetAdaptor::UBSvgSubsetReader::loadScene()
 
 UBGraphicsGroupContainerItem* UBSvgSubsetAdaptor::UBSvgSubsetReader::readGroup()
 {
-    UBGraphicsGroupContainerItem *result = new UBGraphicsGroupContainerItem();
-
+    UBGraphicsGroupContainerItem *group = new UBGraphicsGroupContainerItem();
+    QMultiMap<QString, UBGraphicsPolygonItem *> strokesGroupsContainer;    
+    QList<QGraphicsItem *> groupContainer;    
+    QString currentStrokeIdentifier;
+    
     QUuid groupUuid = QUuid(mXmlReader.attributes().value(aId).toString());
 
     mXmlReader.readNext();
-    while (!mXmlReader.atEnd()) {
+    while (!mXmlReader.atEnd()) 
+    {
         if (mXmlReader.isEndElement()) {
             mXmlReader.readNext();
-            result->setUuid(groupUuid);
-            if (!result->childItems().count()) {
-                delete result;
-                result = 0;
-            }
             break;
-        } else if (mXmlReader.isStartElement()) {
-            if (mXmlReader.name() == tGroup) {
+        } else if (mXmlReader.isStartElement())
+        {
+            if (mXmlReader.name() == tGroup) 
+            {
                 qDebug() << "came across the group id is" << mXmlReader.attributes().value(aId);
                 UBGraphicsGroupContainerItem *curGroup = readGroup();
-                if (curGroup) {
-                    result->addToGroup(curGroup);
-                }
-            } else  if (mXmlReader.name() == tElement) {
+                if (curGroup) 
+                    groupContainer.append(curGroup);
+            } 
+            else if (mXmlReader.name() == tElement)
+            {
+                QString id = mXmlReader.attributes().value(aId).toString();
+                QString itemId  = id.right(QUuid().toString().size());
+                QString groupId = id.left(QUuid().toString().size());
+
                 QGraphicsItem *curItem = readElementFromGroup();
-                if (curItem) {
-                    result->addToGroup(curItem);
+
+                UBGraphicsPolygonItem *curPolygon = qgraphicsitem_cast<UBGraphicsPolygonItem *>(curItem);
+
+                if (curPolygon && !groupId.isEmpty() && !itemId.isEmpty() && itemId != groupId)
+                {
+                    strokesGroupsContainer.insert(groupId, curPolygon);
+                }
+                else // item
+                {
+                    groupContainer.append(curItem);
                 }
             }else {
                 mXmlReader.skipCurrentElement();
@@ -1023,7 +1043,49 @@ UBGraphicsGroupContainerItem* UBSvgSubsetAdaptor::UBSvgSubsetReader::readGroup()
         }
     }
 
-    return result;
+    foreach (QString key, strokesGroupsContainer.keys().toSet())
+    {
+        UBGraphicsStrokesGroup* pStrokesGroup = new UBGraphicsStrokesGroup();
+        UBGraphicsStroke *currentStroke = new UBGraphicsStroke();
+        foreach(UBGraphicsPolygonItem* poly, strokesGroupsContainer.values(key))
+        {
+            if (poly)
+            {
+                mScene->removeItem(poly);
+                mScene->removeItemFromDeletion(poly);
+                poly->setStrokesGroup(pStrokesGroup);
+                poly->setStroke(currentStroke);
+                pStrokesGroup->addToGroup(poly);
+            }
+        }
+        if (currentStroke->polygons().empty())
+            delete currentStroke;
+
+        if (pStrokesGroup->childItems().count())
+            mScene->addItem(pStrokesGroup);
+        else
+            delete pStrokesGroup;
+
+        if (pStrokesGroup)
+        {
+            QGraphicsItem *strokeGroup = qgraphicsitem_cast<QGraphicsItem *>(pStrokesGroup);
+            groupContainer.append(strokeGroup);
+        }
+    }
+
+    foreach(QGraphicsItem* item, groupContainer)
+        group->addToGroup(item);
+
+    if (group->childItems().count())
+    {
+        mScene->addItem(group);
+
+        if (1 == group->childItems().count())
+        {
+            group->destroy(false);
+        }
+    }
+    return group;
 }
 
 void UBSvgSubsetAdaptor::UBSvgSubsetReader::readGroupRoot()
@@ -1051,8 +1113,9 @@ void UBSvgSubsetAdaptor::UBSvgSubsetReader::readGroupRoot()
 QGraphicsItem *UBSvgSubsetAdaptor::UBSvgSubsetReader::readElementFromGroup()
 {
     QGraphicsItem *result = 0;
-
-    result = mScene->itemForUuid(QUuid(mXmlReader.attributes().value(aId).toString()));
+    QString id = mXmlReader.attributes().value(aId).toString();
+    QString uuid = id.right(QUuid().toString().size());
+    result = mScene->itemForUuid(QUuid(uuid));
 
     mXmlReader.skipCurrentElement();
     mXmlReader.readNext();
@@ -1152,25 +1215,42 @@ bool UBSvgSubsetAdaptor::UBSvgSubsetWriter::persistScene(int pageIndex)
             QGraphicsItem *item = items.takeFirst();
 
             // Is the item a strokes group?
+
             UBGraphicsStrokesGroup* strokesGroupItem = qgraphicsitem_cast<UBGraphicsStrokesGroup*>(item);
+
             if(strokesGroupItem && strokesGroupItem->isVisible()){
-            	mXmlWriter.writeStartElement("g");
-                mXmlWriter.writeAttribute(UBSettings::uniboardDocumentNamespaceUri, "uuid", UBStringUtils::toCanonicalUuid(strokesGroupItem->uuid()));
+                QDomElement newGroupElement;
+                if (!strokesGroupItem->parentItem() && strokesGroupItem->childItems().count()) {
+                    newGroupElement = groupDomDocument.createElement(tGroup);
+                    newGroupElement.setAttribute(aId, strokesGroupItem->uuid().toString());
+                    groupRoot.appendChild(newGroupElement);
+                }
+
+                //disabling g section parsing as a group of elements. Use groups refs instead
+//                mXmlWriter.writeStartElement("g");
+//                mXmlWriter.writeAttribute(UBSettings::uniboardDocumentNamespaceUri, "uuid", UBStringUtils::toCanonicalUuid(strokesGroupItem->uuid()));
             	QMatrix matrix = item->sceneMatrix();
 				if (!matrix.isIdentity()){
 					mXmlWriter.writeAttribute("transform", toSvgTransform(matrix));
 				}
 
-				// Add the polygons
-				foreach(QGraphicsItem* item, strokesGroupItem->childItems()){
-					UBGraphicsPolygonItem* poly = qgraphicsitem_cast<UBGraphicsPolygonItem*>(item);
-					if(NULL != poly){
-						polygonItemToSvgPolygon(poly, true);
-						items.removeOne(poly);
-					}
-				}
+                // Add the polygons
+                foreach(QGraphicsItem* item, strokesGroupItem->childItems()){
+
+                    UBGraphicsPolygonItem* poly = qgraphicsitem_cast<UBGraphicsPolygonItem*>(item);
+                    if(NULL != poly){
+                        polygonItemToSvgPolygon(poly, true);
+                        if (!newGroupElement.isNull()) {
+                            QDomElement curPolygonElement = groupDomDocument.createElement(tElement);
+                            curPolygonElement.setAttribute(aId, strokesGroupItem->uuid().toString()
+                                                              + poly->uuid().toString());
+                            newGroupElement.appendChild(curPolygonElement);
+                        }
+                        items.removeOne(poly);
+                    }
+                }
 
-            	mXmlWriter.writeEndElement(); //g
+//                mXmlWriter.writeEndElement(); //g
             }
 
             // Is the item a polygon?
@@ -1401,12 +1481,12 @@ bool UBSvgSubsetAdaptor::UBSvgSubsetWriter::persistScene(int pageIndex)
             QDomElement curElement = groupRoot.firstChildElement();
             while (!curElement.isNull()) {
                 if (curElement.hasAttribute(aId)) {
-                    mXmlWriter.writeStartElement(tGroup);
+                    mXmlWriter.writeStartElement(curElement.tagName());
                     mXmlWriter.writeAttribute(aId, curElement.attribute(aId));
                     QDomElement curSubElement = curElement.firstChildElement();
                     while (!curSubElement.isNull()) {
                         if (curSubElement.hasAttribute(aId)) {
-                            mXmlWriter.writeStartElement(tElement);
+                            mXmlWriter.writeStartElement(curSubElement.tagName());
                             mXmlWriter.writeAttribute(aId, curSubElement.attribute(aId));
                             mXmlWriter.writeEndElement();
                             curSubElement = curSubElement.nextSiblingElement();
@@ -1454,8 +1534,16 @@ void UBSvgSubsetAdaptor::UBSvgSubsetWriter::persistGroupToDom(QGraphicsItem *gro
             if (!tmpUuid.isNull()) {
                 if (item->type() == UBGraphicsGroupContainerItem::Type && item->childItems().count()) {
                     persistGroupToDom(item, curParent, groupDomDocument);
+                } else if (item->type() == UBGraphicsStrokesGroup::Type) {
+                    foreach (QGraphicsItem *polygonItem, item->childItems()) {
+                        QDomElement curPolygonElement = groupDomDocument->createElement(tElement);
+                        curPolygonElement.setAttribute(aId, tmpUuid.toString()
+                                                          + UBGraphicsItem::getOwnUuid(polygonItem).toString());
+                        curGroupElement.appendChild(curPolygonElement);
+                    }
                 } else {
-                    QDomElement curSubElement = groupDomDocument->createElement(tGroup);
+                    QDomElement curSubElement = groupDomDocument->createElement(tElement);
+
                     curSubElement.setAttribute(aId, tmpUuid);
                     curGroupElement.appendChild(curSubElement);
                 }
@@ -1464,6 +1552,27 @@ void UBSvgSubsetAdaptor::UBSvgSubsetWriter::persistGroupToDom(QGraphicsItem *gro
     }
 }
 
+void UBSvgSubsetAdaptor::UBSvgSubsetWriter::persistStrokeToDom(QGraphicsItem *strokeItem, QDomElement *curParent, QDomDocument *curDomDocument)
+{
+    QUuid uuid = UBGraphicsScene::getPersonalUuid(strokeItem);
+    if (!uuid.isNull()) {
+        QDomElement curStrokesGroupElement = curDomDocument->createElement(tStrokeGroup);
+        curStrokesGroupElement.setAttribute(aId, uuid);
+        curParent->appendChild(curStrokesGroupElement);
+
+        foreach (QGraphicsItem *item, strokeItem->childItems()) {
+            QUuid tmpUuid = UBGraphicsScene::getPersonalUuid(item);
+            if (!tmpUuid.isNull()) {
+                if (item->type() == UBGraphicsPolygonItem::Type && item->childItems().count()) {
+                    QDomElement curSubElement = curDomDocument->createElement(tElement);
+                    curSubElement.setAttribute(aId, tmpUuid);
+                    curStrokesGroupElement.appendChild(curSubElement);
+                }
+            }
+        }
+    }
+}
+
 void UBSvgSubsetAdaptor::UBSvgSubsetWriter::polygonItemToSvgLine(UBGraphicsPolygonItem* polygonItem, bool groupHoldsInfo)
 {
     mXmlWriter.writeStartElement("line");
@@ -1615,6 +1724,11 @@ void UBSvgSubsetAdaptor::UBSvgSubsetWriter::polygonItemToSvgPolygon(UBGraphicsPo
                                       , "fill-on-light-background", polygonItem->colorOnLightBackground().name());
         }
 
+        mXmlWriter.writeAttribute(UBSettings::uniboardDocumentNamespaceUri, "uuid", UBStringUtils::toCanonicalUuid(polygonItem->uuid()));
+        if (polygonItem->parentItem()) {
+            mXmlWriter.writeAttribute(UBSettings::uniboardDocumentNamespaceUri, "parent", UBStringUtils::toCanonicalUuid(UBGraphicsItem::getOwnUuid(polygonItem->parentItem())));
+        }
+
         mXmlWriter.writeEndElement();
     }
 }

src/adaptors/UBSvgSubsetAdaptor.h

@@ -179,6 +179,7 @@ class UBSvgSubsetAdaptor
             private:
 
                 void persistGroupToDom(QGraphicsItem *groupItem, QDomElement *curParent, QDomDocument *curDomDocument);
+                void persistStrokeToDom(QGraphicsItem *strokeItem, QDomElement *curParent, QDomDocument *curDomDocument);
                 void polygonItemToSvgPolygon(UBGraphicsPolygonItem* polygonItem, bool groupHoldsInfo);
                 void polygonItemToSvgLine(UBGraphicsPolygonItem* polygonItem, bool groupHoldsInfo);
                 void strokeToSvgPolyline(UBGraphicsStroke* stroke, bool groupHoldsInfo);

src/domain/UBGraphicsPolygonItem.cpp

@@ -60,6 +60,13 @@ UBGraphicsPolygonItem::UBGraphicsPolygonItem (const QLineF& pLine, qreal pWidth)
 void UBGraphicsPolygonItem::initialize()
 {
     setData(UBGraphicsItemData::itemLayerType, QVariant(itemLayerType::DrawingItem)); //Necessary to set if we want z value to be assigned correctly
+    setUuid(QUuid::createUuid());
+}
+
+void UBGraphicsPolygonItem::setUuid(const QUuid &pUuid)
+{
+    UBItem::setUuid(pUuid);
+    setData(UBGraphicsItemData::ItemUuid, QVariant(pUuid)); //store item uuid inside the QGraphicsItem to fast operations with Items on the scene
 }
 
 void UBGraphicsPolygonItem::clearStroke()

src/domain/UBGraphicsPolygonItem.h

@@ -39,6 +39,8 @@ class UBGraphicsPolygonItem : public QGraphicsPolygonItem, public UBItem
 
         void initialize();
 
+        void setUuid(const QUuid &pUuid);
+
         void setStrokesGroup(UBGraphicsStrokesGroup* group);
         UBGraphicsStrokesGroup* strokesGroup() const{return mpGroup;}
         void setColor(const QColor& color);

src/domain/UBGraphicsScene.cpp

@@ -1713,6 +1713,7 @@ QRectF UBGraphicsScene::normalizedSceneRect(qreal ratio)
 QGraphicsItem *UBGraphicsScene::itemForUuid(QUuid uuid)
 {
     QGraphicsItem *result = 0;
+    QString ui = uuid.toString();
 
     //simple search before implementing container for fast access
     foreach (QGraphicsItem *item, items()) {

src/domain/UBGraphicsScene.h

@@ -302,6 +302,8 @@ class UBGraphicsScene: public UBCoreGraphicsScene, public UBItem
 
         static QUuid getPersonalUuid(QGraphicsItem *item);
 
+        UBGraphicsPolygonItem* polygonToPolygonItem(const QPolygonF pPolygon);
+
 public slots:
 		void initStroke();
         void hideEraser();
@@ -338,7 +340,6 @@ public slots:
 
         UBGraphicsPolygonItem* lineToPolygonItem(const QLineF& pLine, const qreal& pWidth);
         UBGraphicsPolygonItem* arcToPolygonItem(const QLineF& pStartRadius, qreal pSpanAngle, qreal pWidth);
-        UBGraphicsPolygonItem* polygonToPolygonItem(const QPolygonF pPolygon);
 
         void initPolygonItem(UBGraphicsPolygonItem*);