Stroke z-order issue: experimental solution;

- Added a graphical display of stroke z level
- Enabled BSP tree use in the graphicsScene

src/board/UBBoardView.cpp

@@ -99,6 +99,12 @@ UBBoardView::UBBoardView (UBBoardController* pController, QWidget* pParent, bool
     init ();
 
     mFilterZIndex = false;
+    /*
+    mFilterZIndex = true;
+    mStartLayer = UBItemLayerType::FixedBackground;
+    mEndLayer = UBItemLayerType::Control;
+    */
+
 
     mLongPressTimer.setInterval(mLongPressInterval);
     mLongPressTimer.setSingleShot(true);

src/domain/UBGraphicsScene.cpp

@@ -322,7 +322,7 @@ UBGraphicsScene::UBGraphicsScene(UBDocumentProxy* parent, bool enableUndoRedoSta
     , mSelectionFrame(0)
 {
     UBCoreGraphicsScene::setObjectName("BoardScene");
-    setItemIndexMethod(NoIndex);
+    //setItemIndexMethod(NoIndex);
 
     setUuid(QUuid::createUuid());
     setDocument(parent);

src/domain/UBGraphicsStrokesGroup.cpp

@@ -48,6 +48,9 @@ UBGraphicsStrokesGroup::UBGraphicsStrokesGroup(QGraphicsItem *parent)
     setFlag(QGraphicsItem::ItemIsSelectable, true);
     setFlag(QGraphicsItem::ItemIsMovable, true);
 
+    mDebugText = NULL;
+
+
 }
 
 UBGraphicsStrokesGroup::~UBGraphicsStrokesGroup()
@@ -81,6 +84,8 @@ void UBGraphicsStrokesGroup::setColor(const QColor &color, colorType pColorType)
             }
         }
     }
+
+    mDebugText->setBrush(QBrush(color));
 }
 
 QColor UBGraphicsStrokesGroup::color(colorType pColorType) const
@@ -201,6 +206,24 @@ void UBGraphicsStrokesGroup::paint(QPainter *painter, const QStyleOptionGraphics
 
 QVariant UBGraphicsStrokesGroup::itemChange(GraphicsItemChange change, const QVariant &value)
 {
+    if (change == ItemZValueChange) {
+        double newZ = qvariant_cast<double>(value);
+
+        UBGraphicsPolygonItem * poly = NULL;
+        if (childItems().size() > 2)
+            poly = dynamic_cast<UBGraphicsPolygonItem*>(childItems()[1]);
+
+        if (poly) {
+            if (!mDebugText) {
+                mDebugText = new QGraphicsSimpleTextItem("None", this);
+                //mDebugText->setPos(poly->scenePos());
+                mDebugText->setPos(poly->boundingRect().topLeft() + QPointF(10, 10));
+                mDebugText->setBrush(QBrush(poly->color()));
+            }
+            mDebugText->setText(QString("Z: %1").arg(newZ));
+        }
+
+    }
     QVariant newValue = Delegate()->itemChange(change, value);
     return QGraphicsItemGroup::itemChange(change, newValue);
 }

src/domain/UBGraphicsStrokesGroup.h

@@ -66,6 +66,8 @@ protected:
     virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
     virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
     virtual QVariant itemChange(GraphicsItemChange change, const QVariant &value);
+
+    QGraphicsSimpleTextItem * mDebugText;
 };
 
 #endif // UBGRAPHICSSTROKESGROUP_H