SankoréSANKORE-499

Document explorer(navigator): pages of a document can not be moved using D'n'D

src/board/UBBoardController.h

@@ -152,6 +152,7 @@ class UBBoardController : public QObject
         void displayMetaData(QMap<QString, QString> metadatas);
 
         void ClearUndoStack();
+        void emitScrollSignal() { emit scrollToSelectedPage(); }
 
     public slots:
         void setActiveDocumentScene(UBDocumentProxy* pDocumentProxy, int pSceneIndex = 0);
@@ -230,6 +231,7 @@ class UBBoardController : public QObject
         void setDocOnPageNavigator(UBDocumentProxy* doc);
         void documentReorganized(int index);
         void displayMetadata(QMap<QString, QString> metadata);
+        void scrollToSelectedPage();
 
     protected:
         void setupViews();

src/core/UBApplicationController.cpp

@@ -337,8 +337,15 @@ void UBApplicationController::showBoard()
     mMainWindow->tutorialToolBar->hide();
     mMainWindow->boardToolBar->show();
 
-    if (mMainMode == Document && UBApplication::documentController->getSelectedItemIndex() != -1)
-        UBApplication::boardController->setActiveDocumentScene(UBApplication::documentController->getCurrentDocument(), UBApplication::documentController->getSelectedItemIndex());
+    if (mMainMode == Document)
+    {
+        int selectedSceneIndex = UBApplication::documentController->getSelectedItemIndex();
+        if (selectedSceneIndex != -1)
+        {
+            UBApplication::boardController->setActiveDocumentScene(UBApplication::documentController->getCurrentDocument(), selectedSceneIndex);
+            UBApplication::boardController->emitScrollSignal();
+        }
+    }
 
     mMainMode = Board;
 

src/gui/UBDocumentNavigator.cpp

@@ -58,6 +58,7 @@ UBDocumentNavigator::UBDocumentNavigator(QWidget *parent, const char *name):QGra
     connect(UBApplication::boardController, SIGNAL(activeSceneChanged()), this, SLOT(addNewPage()));
     connect(mScene, SIGNAL(selectionChanged()), this, SLOT(onSelectionChanged()));
     connect(UBApplication::boardController, SIGNAL(documentReorganized(int)), this, SLOT(onMovedToIndex(int)));
+    connect(UBApplication::boardController, SIGNAL(scrollToSelectedPage()), this, SLOT(onScrollToSelectedPage()));
 }
 
 /**

src/gui/UBDocumentNavigator.h

@@ -46,6 +46,7 @@ signals:
 
 public slots:
     void onMovedToIndex(int index);
+    void onScrollToSelectedPage() { centerOn(mCrntItem); }
 
 protected:
     virtual void resizeEvent(QResizeEvent *event);

src/gui/UBDocumentTreeWidget.cpp

@@ -39,11 +39,14 @@ UBDocumentTreeWidget::UBDocumentTreeWidget(QWidget * parent)
     setDragDropMode(QAbstractItemView::InternalMove);
     setAutoScroll(true);
 
+    mScrollTimer = new QTimer(this);
     connect(UBDocumentManager::documentManager(), SIGNAL(documentUpdated(UBDocumentProxy*))
             , this, SLOT(documentUpdated(UBDocumentProxy*)));
 
     connect(this, SIGNAL(itemChanged(QTreeWidgetItem *, int))
             , this,  SLOT(itemChangedValidation(QTreeWidgetItem *, int)));
+    connect(mScrollTimer, SIGNAL(timeout())
+            , this, SLOT(autoScroll()));
 }
 
 
@@ -104,6 +107,12 @@ void UBDocumentTreeWidget::dragLeaveEvent(QDragLeaveEvent *event)
 {
     Q_UNUSED(event);
 
+    if (mScrollTimer->isActive())
+	{
+		mScrollMagnitude = 0;
+		mScrollTimer->stop();
+	}
+
     if (mDropTargetProxyTi)
     {
         mDropTargetProxyTi->setBackground(0, mBackground);
@@ -114,6 +123,27 @@ void UBDocumentTreeWidget::dragLeaveEvent(QDragLeaveEvent *event)
 
 void UBDocumentTreeWidget::dragMoveEvent(QDragMoveEvent *event)
 {
+	QRect boundingFrame = frameRect();
+	//setting up automatic scrolling
+	const int SCROLL_DISTANCE = 4;
+	int bottomDist = boundingFrame.bottom() - event->pos().y(), topDist = boundingFrame.top() - event->pos().y();
+	if(qAbs(bottomDist) <= SCROLL_DISTANCE)
+	{
+		mScrollMagnitude = (SCROLL_DISTANCE - bottomDist)*4;
+		if(verticalScrollBar()->isVisible() && !mScrollTimer->isActive()) mScrollTimer->start(100);
+	}
+	else if(qAbs(topDist) <= SCROLL_DISTANCE)
+	{
+		mScrollMagnitude = (- SCROLL_DISTANCE - topDist)*4;
+		if(verticalScrollBar()->isVisible() && !mScrollTimer->isActive()) mScrollTimer->start(100);
+	}
+	else
+	{
+		mScrollMagnitude = 0;
+		mScrollTimer->stop();
+	}
+
+
     QTreeWidgetItem* underlyingItem = this->itemAt(event->pos());
 
     if (event->mimeData()->hasFormat(UBApplication::mimeTypeUniboardPage))
@@ -417,3 +447,9 @@ bool UBDocumentGroupTreeItem::isDefaultFolder() const
 {
     return (0 == (flags() & Qt::ItemIsEditable)) && (groupName() == UBSettings::defaultDocumentGroupName);
 }
+
+
+void UBDocumentTreeWidget::autoScroll()
+{
+	this->verticalScrollBar()->setValue(this->verticalScrollBar()->value() + mScrollMagnitude);
+}

src/gui/UBDocumentTreeWidget.h

@@ -43,10 +43,14 @@ class UBDocumentTreeWidget : public QTreeWidget
 
         void itemChangedValidation(QTreeWidgetItem * item, int column);
 
+		void autoScroll();
+
     private:
         UBDocumentProxyTreeItem *mSelectedProxyTi;
         QTreeWidgetItem *mDropTargetProxyTi;
         QBrush mBackground;
+		QTimer* mScrollTimer;
+		int mScrollMagnitude;
 };