Strokes as one object, QPainter set antialiasing

src/adaptors/UBSvgSubsetAdaptor.cpp

@@ -1181,9 +1181,20 @@ bool UBSvgSubsetAdaptor::UBSvgSubsetWriter::persistScene(int pageIndex)
         // Get the items from the scene
         QList<QGraphicsItem*> items = mScene->items();
 
+        int strokes = 0; int polygons = 0;
+        foreach(QGraphicsItem *item, items) {
+            if (item->type() == UBGraphicsPolygonItem::Type) {
+                polygons++;
+            } else if (item->type() == UBGraphicsStrokesGroup::Type) {
+                strokes++;
+            }
+        }
+        qDebug() << "---Strokes count" << strokes << "Polygons count" << polygons;
+
         qSort(items.begin(), items.end(), itemZIndexComp);
 
         UBGraphicsStroke *openStroke = 0;
+        int nextStroke = 0;
 
         bool groupHoldsInfo = false;
 
@@ -1192,18 +1203,35 @@ 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()){
                 // Add the polygons
-                foreach(QGraphicsItem* item, strokesGroupItem->childItems()){
+                //parsing number of polygons into one polygon
+                qDebug() << "parsing stroke number" << nextStroke++;
+                UBGraphicsPolygonItem *resultPoly = 0;
 
+                foreach(QGraphicsItem* item, strokesGroupItem->childItems()) {
                     UBGraphicsPolygonItem* poly = qgraphicsitem_cast<UBGraphicsPolygonItem*>(item);
-                    if(NULL != poly){
+                    if (!poly) {
-                        polygonItemToSvgPolygon(poly, true);
+                        continue;
-                        items.removeOne(poly);
+                    } else if (!resultPoly) {
+                        resultPoly = poly;
+                        continue;
                     }
+                    QPolygonF newPolygon = poly->sceneTransform().map(poly->polygon());
+                    QPainterPath strokePainterPath;
+                    strokePainterPath.addPolygon(resultPoly->sceneTransform().map(resultPoly->polygon()));
+                    QPolygonF oldPolygons = strokePainterPath.simplified().toFillPolygon(resultPoly->sceneTransform().inverted());
+                    newPolygon = oldPolygons.united(newPolygon);
+                    resultPoly->setPolygon(newPolygon);
+
+                    //
+                    items.removeOne(poly);
+                }
+                if (resultPoly) {
+                    polygonItemToSvgPolygon(resultPoly, true);
+                    items.removeOne(resultPoly);
                 }
             }
 

src/domain/UBGraphicsPolygonItem.cpp

@@ -208,6 +208,8 @@ void UBGraphicsPolygonItem::paint ( QPainter * painter, const QStyleOptionGraphi
     if(mHasAlpha && scene() && scene()->isLightBackground())
         painter->setCompositionMode(QPainter::CompositionMode_Darken);
 
+    painter->setRenderHints(QPainter::Antialiasing);
+
     QGraphicsPolygonItem::paint(painter, option, widget);
 }
 

src/domain/UBGraphicsScene.cpp

@@ -286,6 +286,7 @@ UBGraphicsScene::UBGraphicsScene(UBDocumentProxy* parent, bool enableUndoRedoSta
     , magniferDisplayViewWidget(0)
     , mZLayerController(new UBZLayerController(this))
     , mpLastPolygon(NULL)
+    , mCurrentPolygon(0)
 {
     UBCoreGraphicsScene::setObjectName("BoardScene");
 #ifdef __ppc__
@@ -597,6 +598,7 @@ bool UBGraphicsScene::inputDeviceRelease()
                 delete mCurrentStroke;
                 mCurrentStroke = 0;
             }
+            mCurrentPolygon = 0;
         }
     }
 
@@ -707,7 +709,7 @@ void UBGraphicsScene::drawLineTo(const QPointF &pEndPoint, const qreal &pWidth,
     if (mPreviousWidth == -1.0)
         mPreviousWidth = pWidth;
 
-//    UBGraphicsPolygonItem *polygonItem = lineToPolygonItem(QLineF(mPreviousPoint, pEndPoint), pWidth);
+    //    UBGraphicsPolygonItem *polygonItem = lineToPolygonItem(QLineF(mPreviousPoint, pEndPoint), pWidth);
 
     UBGraphicsPolygonItem *polygonItem = lineToPolygonItem(QLineF(mPreviousPoint, pEndPoint), mPreviousWidth,pWidth);
 
@@ -723,6 +725,7 @@ void UBGraphicsScene::drawLineTo(const QPointF &pEndPoint, const qreal &pWidth,
         }
     }
 
+
     if (bLineStyle)
     {
         QSetIterator<QGraphicsItem*> itItems(mAddedItems);
@@ -735,18 +738,45 @@ void UBGraphicsScene::drawLineTo(const QPointF &pEndPoint, const qreal &pWidth,
         mAddedItems.clear();
     }
 
-    mpLastPolygon = polygonItem;
-    mAddedItems.insert(polygonItem);
-
-    // Here we add the item to the scene
-    addItem(polygonItem);
-
     if (!mCurrentStroke)
         mCurrentStroke = new UBGraphicsStroke();
 
-    polygonItem->setStroke(mCurrentStroke);
 
-    mPreviousPolygonItems.append(polygonItem);
+    QPolygonF newPolygon = UBGeometryUtils::lineToPolygon(QLineF(mPreviousPoint, pEndPoint), pWidth);
+
+    if (!mCurrentPolygon)
+    {
+        mCurrentPolygon = new UBGraphicsPolygonItem();
+        mCurrentPolygon->setPolygon(newPolygon);
+        initPolygonItem(mCurrentPolygon);
+        addItem(mCurrentPolygon);
+        mAddedItems.insert(mCurrentPolygon);
+        mCurrentPolygon->setStroke(mCurrentStroke);
+        mpLastPolygon = mCurrentPolygon;
+    }
+
+
+    //newPolygon = newPolygon.united(mCurrentPolygon->polygon());
+
+    QPainterPath strokePainterPath;
+
+
+    strokePainterPath.addPolygon(mCurrentPolygon->sceneTransform().map(mCurrentPolygon->polygon()));
+
+    //QList<QPolygonF>
+    QPolygonF oldPolygons = strokePainterPath.simplified().toFillPolygon(mCurrentPolygon->sceneTransform().inverted());
+    newPolygon = oldPolygons.united(newPolygon);
+
+    /*  foreach(QPolygonF polygon, oldPolygons)
+            {
+                newPolygon = polygon.united(newPolygon);
+            }
+                */
+
+    mpLastPolygon = mCurrentPolygon;
+
+    mCurrentPolygon->setPolygon(newPolygon);
+
 
     if (!bLineStyle)
     {

src/domain/UBGraphicsScene.h

@@ -426,7 +426,7 @@ public slots:
         UBGraphicsPolygonItem* mpLastPolygon;
 
         bool mDrawWithCompass;
-
+        UBGraphicsPolygonItem *mCurrentPolygon;
 };