Permanent Z-layer order changes, click bugs with pictures

src/adaptors/UBSvgSubsetAdaptor.cpp

@@ -2559,7 +2559,6 @@ UBGraphicsRuler* UBSvgSubsetAdaptor::UBSvgSubsetReader::rulerFromSvg()
 
     graphicsItemFromSvg(ruler);
 
-    UBGraphicsItem::assignZValue(ruler, UBGraphicsScene::toolLayerStart + UBGraphicsScene::toolOffsetRuler);
     ruler->setData(UBGraphicsItemData::ItemLayerType, QVariant(UBItemLayerType::Tool));
 
     QStringRef svgWidth = mXmlReader.attributes().value("width");
@@ -2617,7 +2616,6 @@ UBGraphicsCompass* UBSvgSubsetAdaptor::UBSvgSubsetReader::compassFromSvg()
 
     graphicsItemFromSvg(compass);
 
-    UBGraphicsItem::assignZValue(compass, UBGraphicsScene::toolLayerStart + UBGraphicsScene::toolOffsetCompass);
     compass->setData(UBGraphicsItemData::ItemLayerType, QVariant(UBItemLayerType::Tool));
 
     QStringRef svgX = mXmlReader.attributes().value("x");
@@ -2681,7 +2679,6 @@ UBGraphicsProtractor* UBSvgSubsetAdaptor::UBSvgSubsetReader::protractorFromSvg()
 {
     UBGraphicsProtractor* protractor = new UBGraphicsProtractor();
 
-    UBGraphicsItem::assignZValue(protractor, UBGraphicsScene::toolLayerStart + UBGraphicsScene::toolOffsetProtractor);
     protractor->setData(UBGraphicsItemData::ItemLayerType, QVariant(UBItemLayerType::Tool));
 
     graphicsItemFromSvg(protractor);
@@ -2751,7 +2748,6 @@ UBGraphicsTriangle* UBSvgSubsetAdaptor::UBSvgSubsetReader::triangleFromSvg()
 {
     UBGraphicsTriangle* triangle = new UBGraphicsTriangle();
 
-    UBGraphicsItem::assignZValue(triangle, UBGraphicsScene::toolLayerStart + UBGraphicsScene::toolOffsetTriangle);
     triangle->setData(UBGraphicsItemData::ItemLayerType, QVariant(UBItemLayerType::Tool));
 
     graphicsItemFromSvg(triangle);

src/core/UBSettings.cpp

@@ -86,6 +86,7 @@ const int UBSettings::defaultWidgetIconWidth = 110;
 const int UBSettings::defaultVideoWidth = 80;
 
 const int UBSettings::thumbnailSpacing = 20;
+const int UBSettings::longClickInterval = 2000;
 
 const qreal UBSettings::minScreenRatio = 1.33; // 800/600 or 1024/768
 

src/core/UBSettings.h

@@ -179,6 +179,7 @@ class UBSettings : public QObject
         static const int defaultSoundWidth;
 
         static const int thumbnailSpacing;
+        static const int longClickInterval;
 
         static const qreal minScreenRatio;
 

src/domain/UBGraphicsItemDelegate.cpp

@@ -47,6 +47,28 @@
 
 class UBGraphicsParaschoolEditorWidgetItem;
 
+void DelegateButton::mousePressEvent(QGraphicsSceneMouseEvent *event)
+{
+    // make sure delegate is selected, to avoid control being hidden
+    mPressedTime = QTime::currentTime();
+//    mDelegated->setSelected(true);
+
+    event->setAccepted(!mIsTransparentToMouseEvent);
+ }
+
+void DelegateButton::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
+{
+    int timeto = qAbs(QTime::currentTime().msecsTo(mPressedTime));
+
+    if (timeto < UBSettings::longClickInterval) {
+        emit clicked();
+    } else {
+        emit longClicked();
+    }
+
+    event->setAccepted(!mIsTransparentToMouseEvent);
+}
+
 UBGraphicsItemDelegate::UBGraphicsItemDelegate(QGraphicsItem* pDelegated, QObject * parent, bool respectRatio, bool canRotate)
     : QObject(parent)
     , mDelegated(pDelegated)
@@ -88,11 +110,13 @@ void UBGraphicsItemDelegate::init()
     mButtons << mMenuButton;
 
     mZOrderUpButton = new DelegateButton(":/images/plus.svg", mDelegated, mFrame, Qt::BottomLeftSection);
-    connect(mZOrderUpButton, SIGNAL(clicked()), this, SLOT(increaseZLevel()));
+    connect(mZOrderUpButton, SIGNAL(clicked()), this, SLOT(increaseZLevelUp()));
+    connect(mZOrderUpButton, SIGNAL(longClicked()), this, SLOT(increaseZlevelTop()));
     mButtons << mZOrderUpButton;
 
     mZOrderDownButton = new DelegateButton(":/images/minus.svg", mDelegated, mFrame, Qt::BottomLeftSection);
-    connect(mZOrderDownButton, SIGNAL(clicked()), this, SLOT(decreaseZLevel()));
+    connect(mZOrderDownButton, SIGNAL(clicked()), this, SLOT(increaseZLevelDown()));
+    connect(mZOrderDownButton, SIGNAL(longClicked()), this, SLOT(increaseZlevelBottom()));
     mButtons << mZOrderDownButton;
 
     buildButtons();
@@ -149,23 +173,22 @@ QVariant UBGraphicsItemDelegate::itemChange(QGraphicsItem::GraphicsItemChange ch
     return value;
 }
 
+UBGraphicsScene *UBGraphicsItemDelegate::castUBGraphicsScene()
+{
+    UBGraphicsScene *castScene = dynamic_cast<UBGraphicsScene*>(delegated()->scene());
+
+    return castScene;
+}
 
 bool UBGraphicsItemDelegate::mousePressEvent(QGraphicsSceneMouseEvent *event)
 {
-    if(NULL != mMimeData)
-    {
-        QDrag* mDrag = new QDrag(event->widget());
-        mDrag->setMimeData(mMimeData);
-        mDrag->start();
-    }
+    mDragStartPosition = event->pos();
 
     startUndoStep();
 
     if (!mDelegated->isSelected())
     {
         mDelegated->setSelected(true);
-        qDebug() << mDelegated->zValue();
-
         positionHandles();
         return true;
     }
@@ -182,13 +205,27 @@ void UBGraphicsItemDelegate::setMimeData(QMimeData *mimeData)
 
 bool UBGraphicsItemDelegate::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
 {
+    if((NULL != mMimeData) && ((event->pos() - mDragStartPosition).manhattanLength() < QApplication::startDragDistance()))
+    {
+        QDrag* mDrag = new QDrag(event->widget());
+        mDrag->setMimeData(mMimeData);
+        if (!mDragPixmap.isNull()) {
+            mDrag->setPixmap(mDragPixmap);
+            mDrag->setHotSpot(mDragPixmap.rect().center());
+        }
+        mDrag->exec();
+        mDragPixmap = QPixmap();
+
+        return true;
+    }
+
     if(isLocked())
     {
         event->accept();
         return true;
     }
     else
-        return false;
+        return true;
 }
 
 bool UBGraphicsItemDelegate::weelEvent(QGraphicsSceneWheelEvent *event)
@@ -215,68 +252,34 @@ bool UBGraphicsItemDelegate::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
     return true;
 }
 
-
-void UBGraphicsItemDelegate::positionHandles()
-{
-    if (mDelegated->isSelected())
-    {
-        if (mFrame && !mFrame->scene() && mDelegated->scene())
+void UBGraphicsItemDelegate::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
 {
-            mDelegated->scene()->addItem(mFrame);
+    Q_UNUSED(event)
+//    if (!mDelegated->isSelected()) {
+//        setZOrderButtonsVisible(true);
+//    }
 }
 
-        mFrame->setAntiScale(mAntiScaleRatio);
-        mFrame->positionHandles();
-        mFrame->show();
-
-        QTransform tr;
-        tr.scale(mAntiScaleRatio, mAntiScaleRatio);
-
-        mDeleteButton->setTransform(tr);
-
-        qreal topX = mFrame->rect().left()- mDeleteButton->renderer()->viewBox().width() * mAntiScaleRatio / 2;
-        qreal topY = mFrame->rect().top() - mDeleteButton->renderer()->viewBox().height() * mAntiScaleRatio / 2;
-
-        qreal bottomX = mFrame->rect().left()- mDeleteButton->renderer()->viewBox().width() * mAntiScaleRatio / 2;
-        qreal bottomY = mFrame->rect().bottom() - mDeleteButton->renderer()->viewBox().height() * mAntiScaleRatio / 2;
-
-        mDeleteButton->setPos(topX, topY);
-
-        if (!mDeleteButton->scene())
+void UBGraphicsItemDelegate::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
 {
-            mDeleteButton->setParentItem(mFrame);//update parent for the case the item has been previously removed from scene
-            if (mDelegated->scene())
-                mDelegated->scene()->addItem(mDeleteButton);
+    Q_UNUSED(event)
+//    if (!mDelegated->isSelected()) {
+//        setZOrderButtonsVisible(false);
+//    }
 }
 
-        mDeleteButton->show();
 
+void UBGraphicsItemDelegate::positionHandles()
+{
+    if (mDelegated->isSelected()) {
         bool shownOnDisplay = mDelegated->data(UBGraphicsItemData::ItemLayerType).toInt() != UBItemLayerType::Control;
         showHide(shownOnDisplay);
-
         lock(isLocked());
+        updateFrame();
+        mFrame->show();
 
-        int i = 1, j = 0, k = 0;
-        while ((i + j) < mButtons.size())  {
-            DelegateButton* button = mButtons[i + j];
+        updateButtons(true);
 
-            button->setTransform(tr);
-            if (button->getSection() == Qt::TopLeftSection) {
-                button->setPos(topX + (i++ * 1.6 * mFrameWidth * mAntiScaleRatio), topY);
-            } else if (button->getSection() == Qt::BottomLeftSection) {
-                button->setPos(bottomX + (++j * 1.6 * mFrameWidth * mAntiScaleRatio), bottomY);
-            } else if (button->getSection() == Qt::NoSection) {
-                ++k;
-            }
-            if (!button->scene())
-            {
-                button->setParentItem(mFrame);//update parent for the case the item has been previously removed from scene
-                if (mDelegated->scene())
-                    mDelegated->scene()->addItem(button);
-            }
-            button->show();
-            button->setZValue(delegated()->zValue());
-        }
     } else {
         foreach(DelegateButton* button, mButtons)
             button->hide();
@@ -284,7 +287,30 @@ void UBGraphicsItemDelegate::positionHandles()
         mFrame->hide();
     }
 }
+void UBGraphicsItemDelegate::setZOrderButtonsVisible(bool visible)
+{
+    if (visible) {
+        updateFrame();
+        updateButtons();
+
+        QPointF newUpPoint = mFrame->mapToItem(mDelegated, mZOrderUpButton->pos());
+        QPointF newDownPoint = mFrame->mapToItem(mDelegated, mZOrderDownButton->pos());
+
+
+        mZOrderUpButton->setParentItem(mDelegated);
+        mZOrderDownButton->setParentItem(mDelegated);
 
+        mZOrderUpButton->setPos(newUpPoint + QPointF(0,0));
+        mZOrderDownButton->setPos(newDownPoint + QPointF(0,0));
+
+        mZOrderUpButton->show();
+        mZOrderDownButton->show();
+
+    } else {
+        mZOrderUpButton->hide();
+        mZOrderDownButton->hide();
+    }
+}
 
 void UBGraphicsItemDelegate::remove(bool canUndo)
 {
@@ -320,18 +346,34 @@ void UBGraphicsItemDelegate::duplicate()
     UBApplication::boardController->copy();
     UBApplication::boardController->paste();
 }
-void UBGraphicsItemDelegate::increaseZLevel(int delta)
-{
-    qDebug() << delegated()->scene()->items().count();
-
-//    UBGraphicsItem::assignZValue(delegated(), )
-
-//    int valueCandidate = delegated()->data(UBGraphicsItemData::ItemOwnZValue).toInt();
-//    if (delta < 0) {
 
-//    } else if (delta > 0) {
-
-//    }
+void UBGraphicsItemDelegate::increaseZLevelUp()
+{
+    UBGraphicsScene *curScene = castUBGraphicsScene();
+    if (curScene) {
+        curScene->changeZLevelTo(delegated(), UBZLayerController::up);
+    }
+}
+void UBGraphicsItemDelegate::increaseZlevelTop()
+{
+    UBGraphicsScene *curScene = castUBGraphicsScene();
+    if (curScene) {
+        curScene->changeZLevelTo(delegated(), UBZLayerController::top);
+    }
+}
+void UBGraphicsItemDelegate::increaseZLevelDown()
+{
+    UBGraphicsScene *curScene = castUBGraphicsScene();
+    if (curScene) {
+        curScene->changeZLevelTo(delegated(), UBZLayerController::down);
+    }
+}
+void UBGraphicsItemDelegate::increaseZlevelBottom()
+{
+    UBGraphicsScene *curScene = castUBGraphicsScene();
+    if (curScene) {
+        curScene->changeZLevelTo(delegated(), UBZLayerController::bottom);
+    }
 }
 
 void UBGraphicsItemDelegate::lock(bool locked)
@@ -484,3 +526,64 @@ bool UBGraphicsItemDelegate::isFlippable()
 {
     return mFlippable;
 }
+
+void UBGraphicsItemDelegate::updateFrame()
+{
+    if (mFrame && !mFrame->scene() && mDelegated->scene())
+    {
+        mDelegated->scene()->addItem(mFrame);
+    }
+
+    mFrame->setAntiScale(mAntiScaleRatio);
+    mFrame->positionHandles();
+}
+
+void UBGraphicsItemDelegate::updateButtons(bool showUpdated)
+{
+    QTransform tr;
+    tr.scale(mAntiScaleRatio, mAntiScaleRatio);
+
+    mDeleteButton->setParentItem(mFrame);
+    mDeleteButton->setTransform(tr);
+
+    qreal topX = mFrame->rect().left() - mDeleteButton->renderer()->viewBox().width() * mAntiScaleRatio / 2;
+    qreal topY = mFrame->rect().top() - mDeleteButton->renderer()->viewBox().height() * mAntiScaleRatio / 2;
+
+    qreal bottomX = mFrame->rect().left() - mDeleteButton->renderer()->viewBox().width() * mAntiScaleRatio / 2;
+    qreal bottomY = mFrame->rect().bottom() - mDeleteButton->renderer()->viewBox().height() * mAntiScaleRatio / 2;
+
+    mDeleteButton->setPos(topX, topY);
+
+    if (!mDeleteButton->scene())
+    {
+        if (mDelegated->scene())
+            mDelegated->scene()->addItem(mDeleteButton);
+    }
+
+    if (showUpdated)
+        mDeleteButton->show();
+
+    int i = 1, j = 0, k = 0;
+    while ((i + j + k) < mButtons.size())  {
+        DelegateButton* button = mButtons[i + j];
+        button->setParentItem(mFrame);
+
+        button->setTransform(tr);
+        if (button->getSection() == Qt::TopLeftSection) {
+            button->setPos(topX + (i++ * 1.6 * mFrameWidth * mAntiScaleRatio), topY);
+        } else if (button->getSection() == Qt::BottomLeftSection) {
+            button->setPos(bottomX + (++j * 1.6 * mFrameWidth * mAntiScaleRatio), bottomY);
+        } else if (button->getSection() == Qt::NoSection) {
+            ++k;
+        }
+        if (!button->scene())
+        {
+            if (mDelegated->scene())
+                mDelegated->scene()->addItem(button);
+        }
+        if (showUpdated) {
+            button->show();
+            button->setZValue(delegated()->zValue());
+        }
+    }
+}

src/domain/UBGraphicsItemDelegate.h

@@ -21,9 +21,11 @@
 #include <QMimeData>
 
 #include "core/UB.h"
+#include "core/UBSettings.h"
 
 class QGraphicsSceneMouseEvent;
 class QGraphicsItem;
+class UBGraphicsScene;
 class UBGraphicsProxyWidget;
 class UBGraphicsDelegateFrame;
 class UBGraphicsWidgetItem;
@@ -63,20 +65,8 @@ class DelegateButton: public QGraphicsSvgItem
 
     protected:
 
-        virtual void mousePressEvent(QGraphicsSceneMouseEvent *event)
-        {
-            // make sure delegate is selected, to avoid control being hidden
-            mDelegated->setSelected(true);
-
-            event->setAccepted(!mIsTransparentToMouseEvent);
-        }
-
-        virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
-        {
-            emit clicked();
-
-            event->setAccepted(!mIsTransparentToMouseEvent);
-        }
+        virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);
+        virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
 
         void modified();
 
@@ -84,12 +74,13 @@ class DelegateButton: public QGraphicsSvgItem
 
         QGraphicsItem* mDelegated;
 
-
+        QTime mPressedTime;
         bool mIsTransparentToMouseEvent;
         Qt::WindowFrameSection mButtonAlignmentSection;
 
     signals:
         void clicked (bool checked = false);
+        void longClicked();
 
 };
 
@@ -110,8 +101,12 @@ class UBGraphicsItemDelegate : public QObject
         virtual bool mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
         virtual bool weelEvent(QGraphicsSceneWheelEvent *event);
 
+        virtual void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
+        virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
+
         virtual QVariant itemChange(QGraphicsItem::GraphicsItemChange change,
                 const QVariant &value);
+        virtual UBGraphicsScene *castUBGraphicsScene();
 
         void printMessage(const QString &mess) {qDebug() << mess;}
 
@@ -123,6 +118,7 @@ class UBGraphicsItemDelegate : public QObject
         void setCanDuplicate(bool allow){ mCanDuplicate = allow; }
 
         virtual void positionHandles();
+        void setZOrderButtonsVisible(bool visible);
 
         void startUndoStep();
         void commitUndoStep();
@@ -135,6 +131,7 @@ class UBGraphicsItemDelegate : public QObject
 
         QMimeData* mimeData(){ return mMimeData; }
         void setMimeData(QMimeData* mimeData);
+        void setDragPixmap(const QPixmap &pix) {mDragPixmap = pix;}
 
         void setFlippable(bool flippable);
         bool isFlippable();
@@ -151,8 +148,10 @@ class UBGraphicsItemDelegate : public QObject
         virtual void lock(bool lock);
         virtual void duplicate();
 
-        virtual void increaseZLevel() {increaseZLevel(1);}
-        virtual void decreaseZLevel() {increaseZLevel(-1);}
+        void increaseZLevelUp();
+        void increaseZLevelDown();
+        void increaseZlevelTop();
+        void increaseZlevelBottom();
 
     protected:
         virtual void buildButtons() {;}
@@ -187,18 +186,22 @@ protected slots:
         virtual void gotoContentSource(bool checked);
 
 private:
+        void updateFrame();
+        void updateButtons(bool showUpdated = false);
+
 
-        virtual void increaseZLevel(int delta);
 
         QPointF mOffset;
         QTransform mPreviousTransform;
         QPointF mPreviousPosition;
+        QPointF mDragStartPosition;
         qreal mPreviousZValue;
         QSizeF mPreviousSize;
         bool mCanRotate;
         bool mCanDuplicate;
         bool mRespectRatio;
         QMimeData* mMimeData;
+        QPixmap mDragPixmap;
 
         /** A boolean saying that this object can be flippable (mirror effect) */
         bool mFlippable;

src/domain/UBGraphicsPixmapItem.cpp

@@ -58,13 +58,18 @@ void UBGraphicsPixmapItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
     QMimeData* pMime = new QMimeData();
     pMime->setImageData(pixmap().toImage());
     mDelegate->setMimeData(pMime);
+    int k = pixmap().width() / 100;
+    QSize newSize(pixmap().width() / k, pixmap().height() / k);
+
+    mDelegate->setDragPixmap(pixmap().scaled(newSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
+
     if (mDelegate->mousePressEvent(event))
     {
         //NOOP
     }
     else
     {
-        QGraphicsPixmapItem::mousePressEvent(event);
+//        QGraphicsPixmapItem::mousePressEvent(event);
     }
 }
 

src/domain/UBGraphicsPixmapItem.h

@@ -61,10 +61,6 @@ protected:
         virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
 
         virtual QVariant itemChange(GraphicsItemChange change, const QVariant &value);
-
-
-//        UBGraphicsItemDelegate* mDelegate;
-
 };
 
 #endif /* UBGRAPHICSPIXMAPITEM_H_ */

src/domain/UBGraphicsScene.cpp

@@ -61,24 +61,11 @@
 
 #include "core/memcheck.h"
 
-qreal UBGraphicsScene::drawingLayerStart = 0.0;
-qreal UBGraphicsScene::toolLayerStart = 10000000.0;
-
-qreal UBGraphicsScene::toolOffsetRuler = 100;
-qreal UBGraphicsScene::toolOffsetProtractor = 100;
-qreal UBGraphicsScene::toolOffsetTriangle = 100;
-qreal UBGraphicsScene::toolOffsetCompass = 100;
-qreal UBGraphicsScene::toolOffsetEraser = 200;
-
-qreal UBGraphicsScene::toolOffsetCurtain = 1000;
-qreal UBGraphicsScene::toolOffsetPointer = 1100;
-
-qreal UBGraphicsScene::toolOffsetCache = 1000;//Didier please define offset you want
-
 qreal UBZLayerController::errorNumber = -20000001.0;
 
+UBZLayerController::UBZLayerController(QGraphicsScene *scene) :
+    mScene(scene)
 
-UBZLayerController::UBZLayerController()
 {
     scopeMap.insert(itemLayerType::NoLayer,        ItemLayerTypeData( errorNumber, errorNumber));
     scopeMap.insert(itemLayerType::BackgroundItem, ItemLayerTypeData(-10000000.0, -10000000.0 ));
@@ -104,17 +91,162 @@ qreal UBZLayerController::generateZLevel(itemLayerType::Enum key)
 
     qreal result = scopeMap.value(key).curValue;
     qreal top = scopeMap.value(key).topLimit;
+    qreal incrementalStep = scopeMap.value(key).incStep;
 
-    result++;
+    result += incrementalStep;
     if (result >= top) {
+        // If not only one variable presents in the scope, notify that values for scope are over
+        if (scopeMap.value(key).topLimit != scopeMap.value(key).bottomLimit) {
             qDebug() << "new values are over for the scope" << key;
-        result = top - 1;
+        }
+        result = top - incrementalStep;
     }
 
     scopeMap[key].curValue = result;
 
     return result;
 }
+qreal UBZLayerController::generateZLevel(QGraphicsItem *item)
+{
+    qreal result = errorNumber;
+    itemLayerType::Enum type = static_cast<itemLayerType::Enum>(item->data(UBGraphicsItemData::itemLayerType).toInt());
+
+    if (validLayerType(type)) {
+        result =  generateZLevel(type);
+    }
+
+    return result;
+}
+
+qreal UBZLayerController::changeZLevelTo(QGraphicsItem *item, moveDestination dest)
+{
+    itemLayerType::Enum curItemLayerType = typeForData(item);
+    if (curItemLayerType == itemLayerType::NoLayer) {
+        qDebug() << "item's layer is out of the scope. Can't implement z-layer changing operation";
+        return errorNum();
+    }
+
+    //select only items wiht the same z-level as item's one and push it to sortedItems QMultiMap
+    QMultiMap<qreal, QGraphicsItem*> sortedItems;
+    if (mScene->items().count()) {
+        foreach (QGraphicsItem *tmpItem, mScene->items()) {
+            if (typeForData(tmpItem) == curItemLayerType) {
+
+                sortedItems.insert(tmpItem->data(UBGraphicsItemData::ItemOwnZValue).toReal(), tmpItem);
+            }
+        }
+    }
+
+    //If only one item itself - do nothing, return it's z-value
+    if (sortedItems.count() == 1 && sortedItems.values().first() == item) {
+        qDebug() << "only one item exists in layer. Have nothing to change";
+        return item->data(UBGraphicsItemData::ItemOwnZValue).toReal();
+    }
+
+    QMapIterator<qreal, QGraphicsItem*>iCurElement(sortedItems);
+
+    if (dest == up) {
+        if (iCurElement.findNext(item)) {
+            if (iCurElement.hasNext()) {
+                qreal nextZ = iCurElement.peekNext().value()->data(UBGraphicsItemData::ItemOwnZValue).toReal();
+                UBGraphicsItem::assignZValue(iCurElement.peekNext().value(), item->data(UBGraphicsItemData::ItemOwnZValue).toReal());
+                UBGraphicsItem::assignZValue(item, nextZ);
+
+                iCurElement.next();
+
+                while (iCurElement.hasNext() && iCurElement.peekNext().value()->data(UBGraphicsItemData::ItemOwnZValue).toReal() == nextZ) {
+                    UBGraphicsItem::assignZValue(iCurElement.next().value(), nextZ);
+                }
+
+                item->scene()->clearSelection();
+                item->setSelected(true);
+            }
+        }
+
+    } else if (dest == top) {
+        if (iCurElement.findNext(item)) {
+            if (iCurElement.hasNext()) {
+                UBGraphicsItem::assignZValue(item, generateZLevel(item));
+            }
+        }
+
+    } else if (dest == down) {
+        iCurElement.toBack();
+        if (iCurElement.findPrevious(item)) {
+            if (iCurElement.hasPrevious()) {
+                qreal nextZ = iCurElement.peekPrevious().value()->data(UBGraphicsItemData::ItemOwnZValue).toReal();
+                UBGraphicsItem::assignZValue(iCurElement.peekPrevious().value(), item->data(UBGraphicsItemData::ItemOwnZValue).toReal());
+                UBGraphicsItem::assignZValue(item, nextZ);
+
+                while (iCurElement.hasNext() && iCurElement.peekNext().value()->data(UBGraphicsItemData::ItemOwnZValue).toReal() == nextZ) {
+                        UBGraphicsItem::assignZValue(iCurElement.next().value(), nextZ);
+                }
+            }
+        }
+
+    } else if (dest == bottom) {
+        iCurElement.toBack();
+        if (iCurElement.findPrevious(item)) {
+            if (iCurElement.hasPrevious()) {
+//                qreal oldz = iCurElement.peekPrevious().value()->data(UBGraphicsItemData::ItemOwnZValue).toReal();
+                qreal oldz = item->data(UBGraphicsItemData::ItemOwnZValue).toReal();
+                iCurElement.toFront();
+                qreal nextZ = iCurElement.next().value()->data(UBGraphicsItemData::ItemOwnZValue).toReal();
+
+                ItemLayerTypeData curItemLayerTypeData = scopeMap.value(curItemLayerType);
+//
+                //if we have some free space between lowest graphics item and layer's bottom bound,
+                //insert element close to first element in layer
+                if (nextZ >= curItemLayerTypeData.bottomLimit + curItemLayerTypeData.incStep) {
+                    qreal result = nextZ - curItemLayerTypeData.incStep;
+                    UBGraphicsItem::assignZValue(item, result);
+                } else {
+                    UBGraphicsItem::assignZValue(item, nextZ);
+                    bool doubleGap = false; //to detect if we can finish rundown since we can insert item to the free space
+
+                    while (iCurElement.peekNext().value() != item) {
+                        qreal curZ = iCurElement.value()->data(UBGraphicsItemData::ItemOwnZValue).toReal();
+                        qreal curNextZ = iCurElement.peekNext().value()->data(UBGraphicsItemData::ItemOwnZValue).toReal();
+                        if (curNextZ - curZ >= 2 * curItemLayerTypeData.incStep) {
+                            UBGraphicsItem::assignZValue(iCurElement.value(), curZ + curItemLayerTypeData.incStep);
+                            doubleGap = true;
+                            break;
+                        } else {
+                            UBGraphicsItem::assignZValue(iCurElement.value(), iCurElement.next().value()->data(UBGraphicsItemData::ItemOwnZValue).toReal());
+                        }
+                    }
+                    if (!doubleGap) {
+
+                        UBGraphicsItem::assignZValue(iCurElement.value(), oldz);
+
+                        while (iCurElement.hasNext() && (iCurElement.peekNext().value()->data(UBGraphicsItemData::ItemOwnZValue).toReal() == oldz)) {
+                            UBGraphicsItem::assignZValue(iCurElement.next().value(), oldz);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+
+    //clear selection of the item and then select it again to activate selectionChangeProcessing()
+    item->scene()->clearSelection();
+    item->setSelected(true);
+
+    //Return new z value assigned to item
+    return item->data(UBGraphicsItemData::ItemOwnZValue).toReal();
+}
+
+itemLayerType::Enum UBZLayerController::typeForData(QGraphicsItem *item) const
+{
+    itemLayerType::Enum result = static_cast<itemLayerType::Enum>(item->data(UBGraphicsItemData::itemLayerType).toInt());
+
+    if (!scopeMap.contains(result)) {
+        result = itemLayerType::NoLayer;
+    }
+
+    return result;
+}
 
 UBGraphicsScene::UBGraphicsScene(UBDocumentProxy* parent)
     : UBCoreGraphicsScene(parent)
@@ -135,7 +267,7 @@ UBGraphicsScene::UBGraphicsScene(UBDocumentProxy* parent)
     , enableUndoRedoStack(true)
     , magniferControlViewWidget(0)
     , magniferDisplayViewWidget(0)
-
+    , mZLayerController(new UBZLayerController(this))
 {
 
 #ifdef __ppc__
@@ -165,6 +297,9 @@ UBGraphicsScene::~UBGraphicsScene()
     if (mCurrentStroke)
         if (mCurrentStroke->polygons().empty())
             delete mCurrentStroke;
+
+    if (mZLayerController)
+        delete mZLayerController;
 }
 
 void UBGraphicsScene::selectionChangedProcessing()
@@ -178,7 +313,7 @@ void UBGraphicsScene::selectionChangedProcessing()
         QGraphicsItem *nextItem = allItemsList.at(i);
 
         if (nextItem->isSelected()) {
-            nextItem->setZValue(mZLayerController.generateZLevel(itemLayerType::SelectedItem));
+            nextItem->setZValue(mZLayerController->generateZLevel(itemLayerType::SelectedItem));
         } else {
             nextItem->setZValue(nextItem->data(UBGraphicsItemData::ItemOwnZValue).toReal());
         }
@@ -823,7 +958,6 @@ void UBGraphicsScene::leaveEvent(QEvent * event)
     hideEraser();
 }
 
-
 UBGraphicsScene* UBGraphicsScene::sceneDeepCopy() const
 {
     UBGraphicsScene* copy = new UBGraphicsScene(this->document());
@@ -1330,7 +1464,7 @@ void UBGraphicsScene::addItem(QGraphicsItem* item)
     setModified(true);
     UBCoreGraphicsScene::addItem(item);
 
-    UBGraphicsItem::assignZValue(item, generateZLevel(item));
+    UBGraphicsItem::assignZValue(item, mZLayerController->generateZLevel(item));
 
     if (!mTools.contains(item))
       ++mItemCount;
@@ -1344,7 +1478,7 @@ void UBGraphicsScene::addItems(const QSet<QGraphicsItem*>& items)
 
     foreach(QGraphicsItem* item, items) {
         UBCoreGraphicsScene::addItem(item);
-        UBGraphicsItem::assignZValue(item, generateZLevel(item));
+        UBGraphicsItem::assignZValue(item, mZLayerController->generateZLevel(item));
     }
 
     mItemCount += items.size();
@@ -1406,7 +1540,7 @@ QGraphicsItem* UBGraphicsScene::setAsBackgroundObject(QGraphicsItem* item, bool
         item->setAcceptedMouseButtons(Qt::NoButton);
         item->setData(UBGraphicsItemData::ItemLayerType, UBItemLayerType::FixedBackground);
 
-        UBGraphicsItem::assignZValue(item, mZLayerController.generateZLevel(itemLayerType::BackgroundItem));
+        UBGraphicsItem::assignZValue(item, mZLayerController->generateZLevel(itemLayerType::BackgroundItem));
 
         if (pAdaptTransformation)
         {
@@ -1779,6 +1913,23 @@ void UBGraphicsScene::setNominalSize(int pWidth, int pHeight)
      setNominalSize(QSize(pWidth, pHeight));
 }
 
+void UBGraphicsScene::setSelectedZLevel(QList<QGraphicsItem *> itemList)
+{
+    foreach (QGraphicsItem *item, itemList) {
+        item->setZValue(mZLayerController->generateZLevel(itemLayerType::SelectedItem));
+    }
+}
+void UBGraphicsScene::setOwnZlevel(QList<QGraphicsItem *> itemList)
+{
+    foreach (QGraphicsItem *item, itemList) {
+        item->setZValue(item->data(UBGraphicsItemData::ItemOwnZValue).toReal());
+    }
+}
+
+qreal UBGraphicsScene::changeZLevelTo(QGraphicsItem *item, UBZLayerController::moveDestination dest)
+{
+    return mZLayerController->changeZLevelTo(item, dest);
+}
 
 QGraphicsItem* UBGraphicsScene::rootItem(QGraphicsItem* item) const
 {
@@ -1951,18 +2102,6 @@ void UBGraphicsScene::createPointer()
     addItem(mPointer);
 }
 
-qreal UBGraphicsScene::generateZLevel(QGraphicsItem *item)
-{
-    qreal result = UBZLayerController::errorNum();
-    itemLayerType::Enum type = static_cast<itemLayerType::Enum>(item->data(UBGraphicsItemData::itemLayerType).toInt());
-
-    if (mZLayerController.validLayerType(type)) {
-        result =  mZLayerController.generateZLevel(type);
-    }
-
-    return result;
-}
-
 void UBGraphicsScene::setToolCursor(int tool)
 {
     if (tool != (int)UBStylusTool::Selector

src/domain/UBGraphicsScene.h

@@ -49,33 +49,47 @@ class UBGraphicsCache;
 
 const double PI = 4.0 * atan(1.0);
 
-class UBZLayerController
+class UBZLayerController : public QObject
 {
-public:
+    Q_OBJECT
 
+public:
     struct ItemLayerTypeData {
-        ItemLayerTypeData() : bottomLimit(0), topLimit(0), curValue(0) {;}
-        ItemLayerTypeData(qreal bot, qreal top) : bottomLimit(bot), topLimit(top), curValue(bot) {;}
-        qreal bottomLimit;
-        qreal topLimit;
-        qreal curValue;
+        ItemLayerTypeData() : bottomLimit(0), topLimit(0), curValue(0), incStep(1) {;}
+        ItemLayerTypeData(qreal bot, qreal top, qreal increment = 1) : bottomLimit(bot), topLimit(top), curValue(bot), incStep(increment) {;}
+        qreal bottomLimit; //bottom bound of the layer
+        qreal topLimit;//top bound of the layer
+        qreal curValue;//current value of variable
+        qreal incStep;//incremental step
+    };
+
+    enum moveDestination {
+        up
+        , down
+        , top
+        , bottom
     };
 
     typedef QMap<itemLayerType::Enum, ItemLayerTypeData> ScopeMap;
 
-    UBZLayerController();
+    UBZLayerController(QGraphicsScene *scene);
 
     qreal getBottomLimit(itemLayerType::Enum key) const {return scopeMap.value(key).bottomLimit;}
     qreal getTopLimit(itemLayerType::Enum key) const {return scopeMap.value(key).topLimit;}
     bool validLayerType(itemLayerType::Enum key) const {return scopeMap.contains(key);}
+
     static qreal errorNum() {return errorNumber;}
 
     qreal generateZLevel(itemLayerType::Enum key);
+    qreal generateZLevel(QGraphicsItem *item);
+
+    qreal changeZLevelTo(QGraphicsItem *item, moveDestination dest);
+    itemLayerType::Enum typeForData(QGraphicsItem *item) const;
 
 private:
     ScopeMap scopeMap;
     static qreal errorNumber;
-
+    QGraphicsScene *mScene;
 };
 
 class UBGraphicsScene: public UBCoreGraphicsScene, public UBItem
@@ -242,6 +256,8 @@ class UBGraphicsScene: public UBCoreGraphicsScene, public UBItem
 
         void setNominalSize(int pWidth, int pHeight);
 
+        qreal changeZLevelTo(QGraphicsItem *item, UBZLayerController::moveDestination dest);
+
         enum RenderingContext
         {
             Screen = 0, NonScreen, PdfExport, Podcast
@@ -257,20 +273,6 @@ class UBGraphicsScene: public UBCoreGraphicsScene, public UBItem
             return mRenderingContext;
         }
 
-        static qreal backgroundLayerStart;
-        static qreal objectLayerStart;
-        static qreal drawingLayerStart;
-        static qreal toolLayerStart;
-
-        static qreal toolOffsetEraser;
-        static qreal toolOffsetPointer;
-        static qreal toolOffsetRuler;
-        static qreal toolOffsetProtractor;
-        static qreal toolOffsetCompass;
-        static qreal toolOffsetCurtain;
-        static qreal toolOffsetTriangle;
-        static qreal toolOffsetCache;
-
         QSet<QGraphicsItem*> tools(){ return mTools;}
 
         void registerTool(QGraphicsItem* item)
@@ -283,6 +285,8 @@ class UBGraphicsScene: public UBCoreGraphicsScene, public UBItem
 			return mPreviousPoint;
 		}
 
+        void setSelectedZLevel(QList<QGraphicsItem *> itemList);
+        void setOwnZlevel(QList<QGraphicsItem *> itemList);
 public slots:
 
         void hideEraser();
@@ -336,8 +340,6 @@ class UBGraphicsScene: public UBCoreGraphicsScene, public UBItem
         void createEraiser();
         void createPointer();
 
-        qreal generateZLevel(QGraphicsItem *item);
-
         QGraphicsEllipseItem* mEraser;
         QGraphicsEllipseItem* mPointer;
 
@@ -387,7 +389,7 @@ class UBGraphicsScene: public UBCoreGraphicsScene, public UBItem
         UBMagnifier *magniferControlViewWidget;
         UBMagnifier *magniferDisplayViewWidget;
 
-        UBZLayerController mZLayerController;
+        UBZLayerController *mZLayerController;
 
 };
 

src/domain/UBGraphicsVideoItem.cpp

@@ -109,10 +109,10 @@ void UBGraphicsVideoItem::showOnDisplayChanged(bool shown)
 
 void UBGraphicsVideoItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
 {
-    QDrag* mDrag = new QDrag(event->widget());
-    QMimeData* pMime = new QMimeData();
-    mDrag->setMimeData(pMime);
-    mDrag->start();
+//    QDrag* mDrag = new QDrag(event->widget());
+//    QMimeData* pMime = new QMimeData();
+//    mDrag->setMimeData(pMime);
+//    mDrag->start();
 
     mShouldMove = (event->buttons() & Qt::LeftButton);
     mMousePressPos = event->scenePos();

src/domain/UBGraphicsWidgetItem.cpp

@@ -82,11 +82,13 @@ void UBGraphicsWidgetItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
 void UBGraphicsWidgetItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
 {
     sendJSEnterEvent();
+    mDelegate->hoverEnterEvent(event);
     UBGraphicsProxyWidget::hoverEnterEvent(event);
 }
 void UBGraphicsWidgetItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
 {
     sendJSLeaveEvent();
+    mDelegate->hoverLeaveEvent(event);
     UBGraphicsProxyWidget::hoverLeaveEvent(event);
 }
 

src/domain/UBItem.cpp

@@ -29,7 +29,7 @@ UBItem::~UBItem()
     // NOOP
 }
 
-void UBGraphicsItem::assignZValue(QGraphicsItem *item, int value)
+void UBGraphicsItem::assignZValue(QGraphicsItem *item, qreal value)
 {
     item->setZValue(value);
     item->setData(UBGraphicsItemData::ItemOwnZValue, value);

src/domain/UBItem.h

@@ -101,7 +101,7 @@ protected:
 
 public:
 
-    static void assignZValue(QGraphicsItem*, int value);
+    static void assignZValue(QGraphicsItem*, qreal value);
     virtual UBGraphicsItemDelegate *Delegate() const  = 0;
 
     virtual void remove() = 0;