diff --git a/sources/createdxf.cpp b/sources/createdxf.cpp
index a6c2fd840..f904448a5 100644
--- a/sources/createdxf.cpp
+++ b/sources/createdxf.cpp
@@ -20,6 +20,7 @@
 #include <QTextStream>
 #include <QMessageBox>
 #include <QString>
+#include "exportdialog.h"
 
 
 const double Createdxf::sheetWidth = 4000;
@@ -286,7 +287,7 @@ void Createdxf::drawCircle (QString fileName, double radius, double x, double y,
 
 
 /* draw line in DXF Format*/
-void Createdxf::drawLine (QString fileName, double x1, double y1, double x2, double y2, int colour)
+void Createdxf::drawLine (const QString &fileName, double x1, double y1, double x2, double y2,const int &colour)
 {
     if (!fileName.isEmpty()) {
         QFile file(fileName);
@@ -322,8 +323,161 @@ void Createdxf::drawLine (QString fileName, double x1, double y1, double x2, dou
     }
 }
 
+/**
+ * @brief Createdxf::drawLine
+ * Conveniance function to draw line
+ * @param filepath
+ * @param line
+ * @param colorcode
+ */
+void Createdxf::drawLine(const QString &filepath, const QLineF &line, const int &colorcode) {
+	drawLine(filepath, line.p1().x() * xScale,
+					   sheetHeight - (line.p1().y() * yScale),
+					   line.p2().x() * xScale,
+					   sheetHeight - (line.p2().y() * yScale),
+					   colorcode);
+}
+
+void Createdxf::drawArcEllipse(const QString &file_path, qreal x, qreal y, qreal w, qreal h, qreal startAngle, qreal spanAngle, qreal hotspot_x, qreal hotspot_y, qreal rotation_angle, const int &colorcode) {
+	// vector of parts of arc (stored as a pair of startAngle and spanAngle) for each quadrant.
+	QVector< QPair<qreal,qreal> > arc_parts_vector;
+
+	if (spanAngle > 0) {
+		qreal start = startAngle;
+		qreal span;
+		int i;
+		for ( i = startAngle; i < startAngle+spanAngle; i++ ) {
+			int absolute_theta = (i > 0) ? i : -i;
+			if (absolute_theta == 0 || absolute_theta == 90 ||
+				absolute_theta == 180 || absolute_theta == 270 ||
+				absolute_theta == 360) {
+				span = i - start;
+				QPair<qreal, qreal> newPart(start,span);
+				arc_parts_vector.push_back(newPart);
+				start = i;
+			}
+		}
+		if (start != i) {
+			span = i - start;
+			QPair<qreal, qreal> newPart(start,span);
+			arc_parts_vector.push_back(newPart);
+		}
+	} else {
+		qreal start = startAngle;
+		qreal span;
+		int i;
+		for ( i = startAngle; i > startAngle+spanAngle; i-- ) {
+			int absolute_theta = (i > 0) ? i : -i;
+			if (absolute_theta == 0 || absolute_theta == 90 ||
+				absolute_theta == 180 || absolute_theta == 270 ||
+				absolute_theta == 360) {
+				span = i - start;
+				QPair<qreal, qreal> newPart(start,span);
+				arc_parts_vector.push_back(newPart);
+				start = i;
+			}
+		}
+		if (start != i) {
+			span = i - start;
+			QPair<qreal, qreal> newPart(start,span);
+			arc_parts_vector.push_back(newPart);
+		}
+	}
+
+	for (int i = 0; i < arc_parts_vector.size(); i++) {
+
+		QPair<qreal,qreal> arc = arc_parts_vector[i];
+		if (arc.second == 0)
+			continue;
+		qreal arc_startAngle = arc.first * 3.142/180;
+		qreal arc_spanAngle = arc.second * 3.142/180;
+
+		qreal a = w/2;
+		qreal b = h/2;
+
+		qreal x1 = x + w/2 + a*cos(arc_startAngle);
+		qreal y1 = y - h/2 + b*sin(arc_startAngle);
+		qreal x2 = x + w/2 + a*cos(arc_startAngle + arc_spanAngle);
+		qreal y2 = y - h/2 + b*sin(arc_startAngle + arc_spanAngle);
+
+
+		qreal mid_ellipse_x = x + w/2 + a*cos(arc_startAngle + arc_spanAngle/2);
+		qreal mid_ellipse_y = y - h/2 + b*sin(arc_startAngle + arc_spanAngle/2);
+		qreal mid_line_x = (x1+x2)/2;
+		qreal mid_line_y = (y1+y2)/2;
+
+		qreal x3 = (mid_ellipse_x + mid_line_x)/2;
+		qreal y3 = (mid_ellipse_y + mid_line_y)/2;
+
+		// find circumcenter of points (x1,y1), (x3,y3) and (x2,y2)
+		qreal a1 = 2*x2 - 2*x1;
+		qreal b1 = 2*y2 - 2*y1;
+		qreal c1 = x1*x1 + y1*y1 - x2*x2 - y2*y2;
+
+		qreal a2 = 2*x3 - 2*x1;
+		qreal b2 = 2*y3 - 2*y1;
+		qreal c2 = x1*x1 + y1*y1 - x3*x3 - y3*y3;
+
+		qreal center_x = (b1*c2 - b2*c1) / (a1*b2 - a2*b1);
+		qreal center_y = (a1*c2 - a2*c1) / (b1*a2 - b2*a1);
+
+		qreal radius = sqrt( (x1-center_x)*(x1-center_x) + (y1-center_y)*(y1-center_y) );
+
+		if ( x1 > center_x && y1 > center_y )
+			arc_startAngle = asin( (y1 - center_y) / radius );
+		else if ( x1 > center_x && y1 < center_y )
+			arc_startAngle = 3.142*2 - asin( (center_y - y1) / radius );
+		else if ( x1 < center_x && y1 < center_y )
+			arc_startAngle = 3.142 + asin( (center_y - y1) / radius );
+		else
+			arc_startAngle = 3.142 - asin( (y1 - center_y) / radius );
+
+		qreal arc_endAngle;
+
+		if ( x2 > center_x && y2 > center_y )
+			arc_endAngle = asin( (y2 - center_y) / radius );
+		else if ( x2 > center_x && y2 < center_y )
+			arc_endAngle = 3.142*2 - asin( (center_y - y2) / radius );
+		else if ( x2 < center_x && y2 < center_y )
+			arc_endAngle = 3.142 + asin( (center_y - y2) / radius );
+		else
+			arc_endAngle = 3.142 - asin( (y2 - center_y) / radius );
+
+		if (arc_endAngle < arc_startAngle) {
+			qreal temp = arc_startAngle;
+			arc_startAngle = arc_endAngle;
+			arc_endAngle = temp;
+		}
+
+		QPointF transformed_point = ExportDialog::rotation_transformed(center_x, center_y, hotspot_x, hotspot_y, rotation_angle);
+		center_x = transformed_point.x();
+		center_y = transformed_point.y();
+		arc_endAngle *= 180/3.142;
+		arc_startAngle *= 180/3.142;
+		arc_endAngle -= rotation_angle;
+		arc_startAngle -= rotation_angle;
+
+		drawArc(file_path, center_x, center_y, radius, arc_startAngle, arc_endAngle, colorcode);
+	}
+}
+
+/**
+ * @brief Createdxf::drawEllipse
+ * Conveniance function for draw ellipse
+ * @param filepath
+ * @param rect
+ * @param colorcode
+ */
+void Createdxf::drawEllipse(const QString &filepath, const QRectF &rect, const int &colorcode) {
+	drawArcEllipse(filepath, rect.topLeft().x() * xScale,
+						  sheetHeight - (rect.topLeft().y() * yScale),
+						  rect.width() * xScale,
+						  rect.height() * yScale,
+						  0, 360, 0, 0, 0, colorcode);
+}
+
 /* draw rectangle in dxf format */
-void Createdxf::drawRectangle (QString fileName, double x1, double y1, double width, double height, int colour)
+void Createdxf::drawRectangle (const QString &fileName, double x1, double y1, double width, double height, const int &colour)
 {
     if (!fileName.isEmpty()) {
         QFile file(fileName);
@@ -413,6 +567,21 @@ void Createdxf::drawRectangle (QString fileName, double x1, double y1, double wi
     }
 }
 
+/**
+ * @brief Createdxf::drawRectangle
+ * Conveniance function for draw rectangle
+ * @param filepath
+ * @param rect
+ * @param color
+ */
+void Createdxf::drawRectangle(const QString &filepath, const QRectF &rect, const int &colorcode) {
+	drawRectangle(filepath, rect.bottomLeft().x() * xScale,
+							sheetHeight - (rect.bottomLeft().y() * yScale),
+							rect.width() * xScale,
+							rect.height() * yScale,
+							colorcode);
+}
+
 /* draw arc in dx format */
 void Createdxf::drawArc(QString fileName,double x,double y,double rad,double startAngle,double endAngle,int color)
 {
diff --git a/sources/createdxf.h b/sources/createdxf.h
index b9fd2a2b3..b6a49627a 100644
--- a/sources/createdxf.h
+++ b/sources/createdxf.h
@@ -34,11 +34,19 @@ class Createdxf
 	static void drawCircle(QString,double,double,double,int);
 	static void drawArc(QString,double x,double y,double rad,double startAngle,double endAngle,int color);
 	static void drawDonut(QString,double,double,double,int);
-	static void drawRectangle(QString,double,double,double,double,int);
-	static void drawLine(QString,double,double,double,double,int);
+
+	static void drawArcEllipse (const QString &file_path, qreal x, qreal y, qreal w, qreal h, qreal startAngle, qreal spanAngle, qreal hotspot_x, qreal hotspot_y, qreal rotation_angle, const int &colorcode);
+
+	static void drawEllipse (const QString &filepath, const QRectF &rect, const int &colorcode);
+
+	static void drawRectangle(const QString &filepath,double,double,double,double,const int &colorcode);
+	static void drawRectangle(const QString &filepath, const QRectF &rect, const int &colorcode);
+
+	static void drawLine(const QString &filapath,double,double,double,double, const int &clorcode);
+	static void drawLine(const QString &filepath, const QLineF &line,const int &colorcode);
+
 	static void drawText(QString,QString,double,double,double,double,int);
-	static void drawTextAligned(QString fileName, QString text,double x, double y, double height, double rotation, double oblique,int hAlign, int vAlign, double xAlign, int colour,
-					 bool leftAlign = false, float scale = 0);
+	static void drawTextAligned(QString fileName, QString text,double x, double y, double height, double rotation, double oblique,int hAlign, int vAlign, double xAlign, int colour, bool leftAlign = false, float scale = 0);
 
 	static const double sheetWidth;
 	static const double sheetHeight;
diff --git a/sources/diagram.cpp b/sources/diagram.cpp
index 7446c324e..053ecace3 100644
--- a/sources/diagram.cpp
+++ b/sources/diagram.cpp
@@ -418,9 +418,7 @@ QDomDocument Diagram::toXml(bool whole_content) {
 	if (!list_shapes.isEmpty()) {
 		QDomElement shapes = document.createElement("shapes");
 		foreach (QetShapeItem *dii, list_shapes) {
-			dii ->setWritingXml(true);
 			shapes.appendChild(dii -> toXml(document));
-			dii ->setWritingXml(false);
 		}
 		racine.appendChild(shapes);
 	}
@@ -1106,6 +1104,20 @@ DiagramPosition Diagram::convertPosition(const QPointF &pos) {
 	return(diagram_position);
 }
 
+/**
+ * @brief Diagram::snapToGrid
+ * Return a nearest snap point of p
+ * @param p point to find the nearest snaped point
+ * @return
+ */
+QPointF Diagram::snapToGrid(const QPointF &p) {
+	// arrondit l'abscisse a 10 px pres
+	int p_x = qRound(p.x() / (Diagram::xGrid * 1.0)) * Diagram::xGrid;
+	// arrondit l'ordonnee a 10 px pres
+	int p_y = qRound(p.y() / (Diagram::yGrid * 1.0)) * Diagram::yGrid;
+	return (QPointF(p_x, p_y));
+}
+
 /**
 	Definit s'il faut afficher ou non les bornes
 	@param dt true pour afficher les bornes, false sinon
diff --git a/sources/diagram.h b/sources/diagram.h
index 8cc08a322..2bdf34cb7 100644
--- a/sources/diagram.h
+++ b/sources/diagram.h
@@ -156,6 +156,7 @@ class Diagram : public QGraphicsScene {
 	void setBorderOptions(BorderOptions);
 	BorderOptions borderOptions();
 	DiagramPosition convertPosition(const QPointF &);
+	static QPointF snapToGrid(const QPointF &p);
 	
 	bool drawTerminals() const;
 	void setDrawTerminals(bool);
diff --git a/sources/diagramcommands.cpp b/sources/diagramcommands.cpp
index 8037dd31b..439d9c735 100644
--- a/sources/diagramcommands.cpp
+++ b/sources/diagramcommands.cpp
@@ -497,10 +497,10 @@ void MoveElementsCommand::move(const QPointF &actual_movement) {
 	// deplace les shapes
 	foreach (QetShapeItem *dsi, content_to_move.shapes) {
 		dsi -> setPos(dsi -> pos() + actual_movement);
-		QRectF rec = dsi -> boundingRect();
+		/*QRectF rec = dsi -> boundingRect();
 		rec.translate(actual_movement);
 		dsi -> setBoundingRect(rec);
-		dsi -> setPos(dsi -> pos() - actual_movement);
+		dsi -> setPos(dsi -> pos() - actual_movement);*/
 	}
 }
 
@@ -1161,41 +1161,46 @@ void ChangeSeveralConductorsPropertiesCommand::redo() {
 }
 
 /**
- * @brief ImageResizerCommand::ImageResizerCommand Constructor
- * @param image
- * @param old_ old size of image
- * @param new_ new size of image
- * @param parent undocommand parent
+ * @brief ItemResizerCommand::ItemResizerCommand
+ * Change the size of @qgi
+ * @param qgi item to resize
+ * @param old_ old size
+ * @param new_ new size
+ * @param text text to display
+ * @param parent undo parent
  */
-ImageResizerCommand::ImageResizerCommand (DiagramImageItem *image, qreal &old_, qreal &new_, QUndoCommand *parent):
+ItemResizerCommand::ItemResizerCommand (QetGraphicsItem *qgi, qreal &old_, qreal &new_, const QString &text, QUndoCommand *parent):
 	QUndoCommand(parent),
-	image_(image),
-	old_size (old_),
-	new_size (new_),
-	diagram(image->diagram())
+	m_qgi    ( qgi			  ),
+	old_size ( old_			  ),
+	new_size ( new_			  ),
+	diagram  ( qgi->diagram() ),
+	m_text   ( text			  )
 {}
 
 /**
- * @brief ImageResizerCommand::~ImageResizerCommand destructor
+ * @brief ItemResizerCommand::~ItemResizerCommand
  */
-ImageResizerCommand::~ImageResizerCommand() {}
+ItemResizerCommand::~ItemResizerCommand() {}
 
 /**
- * @brief ImageResizerCommand::undo set the old size
+ * @brief ItemResizerCommand::undo
  */
-void ImageResizerCommand::undo() {
+void ItemResizerCommand::undo() {
 	diagram -> showMe();
-	image_ -> setScale(old_size);
+	m_qgi -> setScale(old_size);
+	QUndoCommand::undo();
 }
 
 /**
- * @brief ImageResizerCommand::redo set the new size
+ * @brief ItemResizerCommand::redo
  */
-void ImageResizerCommand::redo() {
+void ItemResizerCommand::redo() {
 	diagram -> showMe();
-	if (old_size<new_size) setText(QObject::tr("Agrandire une image \340 %1 %").arg(new_size*100));
-	else setText(QObject::tr("R\351duire une image \340 %1 %").arg(new_size*100));
-	image_ -> setScale(new_size);
+	if (old_size<new_size) setText(QObject::tr("Agrandire %1 \340 %2 %").arg(m_text).arg(new_size*100));
+	else setText(QObject::tr("R\351duire %1 \340 %2 %").arg(m_text).arg(new_size*100));
+	m_qgi -> setScale(new_size);
+	QUndoCommand::redo();
 }
 
 
@@ -1212,7 +1217,9 @@ ChangeShapeStyleCommand::ChangeShapeStyleCommand(QetShapeItem *shape, Qt::PenSty
 	old_style (old_),
 	new_style (new_),
 	diagram(shape->diagram())
-{}
+{
+	setText(QObject::tr("Changer le style d'une shape"));
+}
 
 /**
  * @brief ChangeShapeStyleCommand::~ChangeShapeStyleCommand destructor
@@ -1237,49 +1244,6 @@ void ChangeShapeStyleCommand::redo() {
 	QUndoCommand::redo();
 }
 
-
-
-/**
- * @brief ChangeShapeScaleCommand::ChangeShapeScaleCommand Constructor
- * @param shape
- * @param scale_factor
- * @param parent undocommand parent
- */
-ChangeShapeScaleCommand::ChangeShapeScaleCommand(QetShapeItem *shape, double scale_factor, QUndoCommand *parent):
-	QUndoCommand(parent),
-	shape_(shape),
-	factor (scale_factor),
-	diagram(shape->diagram())
-{}
-
-/**
- * @brief ChangeShapeScaleCommand::~ChangeShapeScaleCommand destructor
- */
-ChangeShapeScaleCommand::~ChangeShapeScaleCommand() {}
-
-/**
- * @brief ChangeShapeScaleCommand::undo set the old size
- */
-void ChangeShapeScaleCommand::undo() {
-	diagram -> removeItem(shape_);
-	shape_ -> scale(1/factor);
-	diagram -> addItem(shape_);
-	diagram -> showMe();
-	QUndoCommand::undo();
-}
-
-/**
- * @brief ChangeShapeScaleCommand::redo set the new size
- */
-void ChangeShapeScaleCommand::redo() {
-	diagram -> removeItem(shape_);
-	shape_ -> scale(factor);
-	diagram -> addItem(shape_);
-	diagram -> showMe();
-	QUndoCommand::redo();
-}
-
-
 /**
  * @brief LinkElementsCommand::LinkElementsCommand
  *Constructor
diff --git a/sources/diagramcommands.h b/sources/diagramcommands.h
index b6a42e5f0..e4fb6147d 100644
--- a/sources/diagramcommands.h
+++ b/sources/diagramcommands.h
@@ -598,11 +598,11 @@ class ChangeSeveralConductorsPropertiesCommand : public QUndoCommand {
 	Diagram *diagram;
 };
 
-class ImageResizerCommand : public QUndoCommand {
+class ItemResizerCommand : public QUndoCommand {
 	//constructor and destructor
 	public:
-	ImageResizerCommand (DiagramImageItem *image, qreal &old_, qreal &new_, QUndoCommand *parent = 0);
-	virtual ~ImageResizerCommand();
+	ItemResizerCommand (QetGraphicsItem *qgi, qreal &old_, qreal &new_,const QString  &text, QUndoCommand *parent = 0);
+	virtual ~ItemResizerCommand();
 
 	//methods
 	public:
@@ -611,9 +611,10 @@ class ImageResizerCommand : public QUndoCommand {
 
 	//attributes
 	private:
-	DiagramImageItem *image_;
+	QetGraphicsItem *m_qgi;
 	qreal old_size, new_size;
 	Diagram *diagram;
+	QString m_text;
 };
 
 
@@ -635,24 +636,6 @@ class ChangeShapeStyleCommand : public QUndoCommand {
 	Diagram *diagram;
 };
 
-class ChangeShapeScaleCommand : public QUndoCommand {
-	//constructor and destructor
-	public:
-	ChangeShapeScaleCommand (QetShapeItem *shape, double scale_factor, QUndoCommand *parent = 0);
-	virtual ~ChangeShapeScaleCommand();
-
-	//methods
-	public:
-	virtual void undo();
-	virtual void redo();
-
-	//attributes
-	private:
-	QetShapeItem *shape_;
-	double factor;
-	Diagram *diagram;
-};
-
 class LinkElementsCommand : public QUndoCommand {
 	public:
 	// constructor destructor
diff --git a/sources/diagramview.cpp b/sources/diagramview.cpp
index db2eb732a..14c5820ea 100644
--- a/sources/diagramview.cpp
+++ b/sources/diagramview.cpp
@@ -50,7 +50,7 @@
 	@param diagram Schema a afficher ; si diagram vaut 0, un nouveau Diagram est utilise
 	@param parent Le QWidget parent de cette vue de schema
 */
-DiagramView::DiagramView(Diagram *diagram, QWidget *parent) : QGraphicsView(parent), newItem(0){
+DiagramView::DiagramView(Diagram *diagram, QWidget *parent) : QGraphicsView(parent), newShapeItem(nullptr){
 	setAttribute(Qt::WA_DeleteOnClose, true);
 	setInteractive(true);
 	current_behavior = noAction;
@@ -462,16 +462,16 @@ void DiagramView::mousePressEvent(QMouseEvent *e) {
 				current_behavior = noAction;
 				break;
 			case addingLine:
-				newItem = new QetShapeItem(rubber_band_origin, rubber_band_origin, QetShapeItem::Line, false);
-				scene -> addItem(newItem);
+				newShapeItem = new QetShapeItem(rubber_band_origin, rubber_band_origin, QetShapeItem::Line);
+				scene -> addItem(newShapeItem);
 				break;
 			case addingRectangle:
-				newItem = new QetShapeItem(rubber_band_origin, rubber_band_origin, QetShapeItem::Rectangle);
-				scene -> addItem(newItem);
+				newShapeItem = new QetShapeItem(rubber_band_origin, rubber_band_origin, QetShapeItem::Rectangle);
+				scene -> addItem(newShapeItem);
 				break;
 			case addingEllipse:
-				newItem = new QetShapeItem(rubber_band_origin, rubber_band_origin, QetShapeItem::Ellipse);
-				scene -> addItem(newItem);
+				newShapeItem = new QetShapeItem(rubber_band_origin, rubber_band_origin, QetShapeItem::Ellipse);
+				scene -> addItem(newShapeItem);
 				break;
 			case dragView:
 				current_behavior = noAction;
@@ -504,12 +504,7 @@ void DiagramView::mouseMoveEvent(QMouseEvent *e) {
 		return;
 	}
 	else if (e -> buttons() == Qt::LeftButton && current_behavior & addingShape) {
-		QRectF rec = QRectF(rubber_band_origin, mapToScene(e->pos())).normalized();
-		scene ->removeItem(newItem);
-		newItem -> setBoundingRect(rec);
-		if (current_behavior == addingLine)
-			newItem -> setLineAngle(rubber_band_origin != rec.topLeft() && rubber_band_origin != rec.bottomRight());
-		scene ->addItem(newItem);
+		newShapeItem->setP2(mapToScene(e->pos()));
 	}
 	else QGraphicsView::mouseMoveEvent(e);
 }
@@ -524,10 +519,8 @@ void DiagramView::mouseReleaseEvent(QMouseEvent *e) {
 		return;
 	}
 	else if (current_behavior & addingShape) {
-		newItem -> setFullyBuilt(true);
 		// place it to the good position with an undo command
-		scene -> undoStack().push(new AddShapeCommand(scene, newItem, rubber_band_origin));
-		adjustSceneRect();
+		scene -> undoStack().push(new AddShapeCommand(scene, newShapeItem, rubber_band_origin));
 		emit(itemAdded());
 		current_behavior = noAction;
 	}
diff --git a/sources/diagramview.h b/sources/diagramview.h
index 791bfefdc..ef339299a 100644
--- a/sources/diagramview.h
+++ b/sources/diagramview.h
@@ -65,7 +65,7 @@ class DiagramView : public QGraphicsView {
 	QPoint next_position_;
 	QPointF center_view_;
 	QImage image_to_add_;
-	QetShapeItem *newItem;
+	QetShapeItem *newShapeItem;
 	QPointF rubber_band_origin;
 	
 	// methods
diff --git a/sources/exportdialog.cpp b/sources/exportdialog.cpp
index 5d2cc9c1f..7d0d94ece 100644
--- a/sources/exportdialog.cpp
+++ b/sources/exportdialog.cpp
@@ -421,7 +421,8 @@ void ExportDialog::generateDxf(Diagram *diagram, int width, int height, bool kee
 	QList<DiagramImageItem *> list_images;
 	QList<QLineF *> list_lines;
 	QList<QRectF *> list_rectangles;
-	QList<QRectF *> list_ellipses;
+	//QList<QRectF *> list_ellipses;
+	QList <QetShapeItem *> list_shapes;
 
 	DiagramFolioList *ptr;
 	if (ptr = dynamic_cast<DiagramFolioList *>(diagram)) {
@@ -482,45 +483,12 @@ void ExportDialog::generateDxf(Diagram *diagram, int width, int height, bool kee
 			} else if (DiagramImageItem *dii = qgraphicsitem_cast<DiagramImageItem *>(qgi)) {
 				list_images << dii;
 			} else if (QetShapeItem *dii = qgraphicsitem_cast<QetShapeItem *>(qgi)) {
-				if (dii -> getType() == QetShapeItem::Line && dii -> getLine()) {
-					list_lines << dii -> getLine();
-				} else if (dii -> getType() == QetShapeItem::Rectangle && dii -> getRectangle()) {
-					list_rectangles << dii -> getRectangle();
-				} else if (dii -> getEllipse()){
-					 list_ellipses << dii -> getEllipse();
-				}
+				list_shapes << dii;
 			}
 		}
 	}
 
-	//draw lines
-	foreach(QLineF *line, list_lines) {
-		qreal x1 = (line -> p1().x()) * Createdxf::xScale;
-		qreal y1 = Createdxf::sheetHeight - (line -> p1().y()) * Createdxf::yScale;
-		qreal x2 = (line -> p2().x()) * Createdxf::xScale;
-		qreal y2 = Createdxf::sheetHeight - (line -> p2().y()) * Createdxf::yScale;
-		Createdxf::drawLine(file_path, x1, y1, x2, y2, 0);
-	}
-
-	//draw rectangles
-	foreach(QRectF *rect, list_rectangles) {
-		qreal x1 = (rect -> bottomLeft().x()) * Createdxf::xScale;
-		qreal y1 = Createdxf::sheetHeight - (rect -> bottomLeft().y()) * Createdxf::yScale;
-		qreal w = rect -> width() * Createdxf::xScale;
-		qreal h = rect -> height() * Createdxf::yScale;
-		Createdxf::drawRectangle(file_path, x1, y1, w, h, 0);
-	}
-
-	//draw independent ellipses
-	foreach(QRectF *rect, list_ellipses) {
-		qreal x1 = (rect -> topLeft().x()) * Createdxf::xScale;
-		qreal y1 = Createdxf::sheetHeight - (rect -> topLeft().y()) * Createdxf::yScale;
-		qreal w = rect -> width() * Createdxf::xScale;
-		qreal h = rect -> height() * Createdxf::yScale;
-		qreal startAngle = 0;
-		qreal spanAngle = 360;
-		drawDxfArcEllipse(file_path, x1, y1, w, h, startAngle, spanAngle, 0, 0, 0);
-	}
+	foreach (QetShapeItem *qsi, list_shapes) qsi->toDXF(file_path);
 
 	//Draw elements
 	foreach(Element *elmt, list_elements) {
@@ -647,7 +615,7 @@ void ExportDialog::generateDxf(Diagram *diagram, int width, int height, bool kee
 			qreal h = arc -> at(3) * Createdxf::yScale;
 			qreal startAngle = arc -> at(4);
 			qreal spanAngle = arc -> at(5);
-			drawDxfArcEllipse(file_path, x, y, w, h, startAngle, spanAngle, hotspot_x, hotspot_y, rotation_angle);
+			Createdxf::drawArcEllipse(file_path, x, y, w, h, startAngle, spanAngle, hotspot_x, hotspot_y, rotation_angle, 0);
 		}
 	}
 
@@ -719,132 +687,6 @@ void ExportDialog::generateDxf(Diagram *diagram, int width, int height, bool kee
 	Createdxf::dxfEnd(file_path);
 }
 
-// approximate the ellipse to parts of circles.
-void ExportDialog::drawDxfArcEllipse(QString file_path, qreal x, qreal y, qreal w, qreal h, qreal startAngle,
-									 qreal spanAngle, qreal hotspot_x, qreal hotspot_y, qreal rotation_angle) {
-
-	// vector of parts of arc (stored as a pair of startAngle and spanAngle) for each quadrant.
-	QVector< QPair<qreal,qreal> > arc_parts_vector;
-
-	if (spanAngle > 0) {
-		qreal start = startAngle;
-		qreal span;
-		int i;
-		for ( i = startAngle; i < startAngle+spanAngle; i++ ) {
-			int absolute_theta = (i > 0) ? i : -i;
-			if (absolute_theta == 0 || absolute_theta == 90 ||
-				absolute_theta == 180 || absolute_theta == 270 ||
-				absolute_theta == 360) {
-				span = i - start;
-				QPair<qreal, qreal> newPart(start,span);
-				arc_parts_vector.push_back(newPart);
-				start = i;
-			}
-		}
-		if (start != i) {
-			span = i - start;
-			QPair<qreal, qreal> newPart(start,span);
-			arc_parts_vector.push_back(newPart);
-		}
-	} else {
-		qreal start = startAngle;
-		qreal span;
-		int i;
-		for ( i = startAngle; i > startAngle+spanAngle; i-- ) {
-			int absolute_theta = (i > 0) ? i : -i;
-			if (absolute_theta == 0 || absolute_theta == 90 ||
-				absolute_theta == 180 || absolute_theta == 270 ||
-				absolute_theta == 360) {
-				span = i - start;
-				QPair<qreal, qreal> newPart(start,span);
-				arc_parts_vector.push_back(newPart);
-				start = i;
-			}
-		}
-		if (start != i) {
-			span = i - start;
-			QPair<qreal, qreal> newPart(start,span);
-			arc_parts_vector.push_back(newPart);
-		}
-	}
-
-	for (int i = 0; i < arc_parts_vector.size(); i++) {
-
-		QPair<qreal,qreal> arc = arc_parts_vector[i];
-		if (arc.second == 0)
-			continue;
-		qreal arc_startAngle = arc.first * 3.142/180;
-		qreal arc_spanAngle = arc.second * 3.142/180;
-
-		qreal a = w/2;
-		qreal b = h/2;
-
-		qreal x1 = x + w/2 + a*cos(arc_startAngle);
-		qreal y1 = y - h/2 + b*sin(arc_startAngle);
-		qreal x2 = x + w/2 + a*cos(arc_startAngle + arc_spanAngle);
-		qreal y2 = y - h/2 + b*sin(arc_startAngle + arc_spanAngle);
-
-
-		qreal mid_ellipse_x = x + w/2 + a*cos(arc_startAngle + arc_spanAngle/2);
-		qreal mid_ellipse_y = y - h/2 + b*sin(arc_startAngle + arc_spanAngle/2);
-		qreal mid_line_x = (x1+x2)/2;
-		qreal mid_line_y = (y1+y2)/2;
-
-		qreal x3 = (mid_ellipse_x + mid_line_x)/2;
-		qreal y3 = (mid_ellipse_y + mid_line_y)/2;
-
-		// find circumcenter of points (x1,y1), (x3,y3) and (x2,y2)
-		qreal a1 = 2*x2 - 2*x1;
-		qreal b1 = 2*y2 - 2*y1;
-		qreal c1 = x1*x1 + y1*y1 - x2*x2 - y2*y2;
-
-		qreal a2 = 2*x3 - 2*x1;
-		qreal b2 = 2*y3 - 2*y1;
-		qreal c2 = x1*x1 + y1*y1 - x3*x3 - y3*y3;
-
-		qreal center_x = (b1*c2 - b2*c1) / (a1*b2 - a2*b1);
-		qreal center_y = (a1*c2 - a2*c1) / (b1*a2 - b2*a1);
-
-		qreal radius = sqrt( (x1-center_x)*(x1-center_x) + (y1-center_y)*(y1-center_y) );
-
-		if ( x1 > center_x && y1 > center_y )
-			arc_startAngle = asin( (y1 - center_y) / radius );
-		else if ( x1 > center_x && y1 < center_y )
-			arc_startAngle = 3.142*2 - asin( (center_y - y1) / radius );
-		else if ( x1 < center_x && y1 < center_y )
-			arc_startAngle = 3.142 + asin( (center_y - y1) / radius );
-		else
-			arc_startAngle = 3.142 - asin( (y1 - center_y) / radius );
-
-		qreal arc_endAngle;
-
-		if ( x2 > center_x && y2 > center_y )
-			arc_endAngle = asin( (y2 - center_y) / radius );
-		else if ( x2 > center_x && y2 < center_y )
-			arc_endAngle = 3.142*2 - asin( (center_y - y2) / radius );
-		else if ( x2 < center_x && y2 < center_y )
-			arc_endAngle = 3.142 + asin( (center_y - y2) / radius );
-		else
-			arc_endAngle = 3.142 - asin( (y2 - center_y) / radius );
-
-		if (arc_endAngle < arc_startAngle) {
-			qreal temp = arc_startAngle;
-			arc_startAngle = arc_endAngle;
-			arc_endAngle = temp;
-		}
-
-		QPointF transformed_point = rotation_transformed(center_x, center_y, hotspot_x, hotspot_y, rotation_angle);
-		center_x = transformed_point.x();
-		center_y = transformed_point.y();
-		arc_endAngle *= 180/3.142;
-		arc_startAngle *= 180/3.142;
-		arc_endAngle -= rotation_angle;
-		arc_startAngle -= rotation_angle;
-
-		Createdxf::drawArc(file_path, center_x, center_y, radius, arc_startAngle, arc_endAngle, 0);
-	}
-}
-
 void ExportDialog::fillRow(QString file_path, const QRectF &row_rect, QString author, QString title,
 							   QString folio, QString date)
 {
diff --git a/sources/exportdialog.h b/sources/exportdialog.h
index db49b53e5..fcea79163 100644
--- a/sources/exportdialog.h
+++ b/sources/exportdialog.h
@@ -41,6 +41,7 @@ class ExportDialog : public QDialog {
 	// methods
 	public:
 	int diagramsToExportCount() const;
+	static QPointF rotation_transformed(qreal, qreal, qreal, qreal, qreal);
 	
 	private:
 	class ExportDiagramLine {
@@ -94,8 +95,6 @@ class ExportDialog : public QDialog {
 	void exportDiagram(ExportDiagramLine *);
 	qreal diagramRatio(Diagram *);
 	QSize diagramSize(Diagram *);
-	QPointF rotation_transformed(qreal, qreal, qreal, qreal, qreal);
-	void drawDxfArcEllipse(QString, qreal, qreal, qreal, qreal, qreal, qreal, qreal, qreal, qreal);
 	
 	public slots:
 	void slot_correctWidth(int);
diff --git a/sources/qetgraphicsitem/diagramimageitem.cpp b/sources/qetgraphicsitem/diagramimageitem.cpp
index 80345ef58..2aa080cae 100644
--- a/sources/qetgraphicsitem/diagramimageitem.cpp
+++ b/sources/qetgraphicsitem/diagramimageitem.cpp
@@ -147,7 +147,7 @@ void DiagramImageItem::editProperty() {
 		cb.isChecked() ? is_movable_=false : is_movable_=true;
 		qreal new_scale = slider.value();
 		new_scale /= factor_range;
-		if (scale_ != new_scale) diagram()->undoStack().push(new ImageResizerCommand(this, scale_, new_scale));
+		if (scale_ != new_scale) diagram()->undoStack().push(new ItemResizerCommand(this, scale_, new_scale, tr("une image")));
 	}
 	//...or not
 	else setScale(scale_);
diff --git a/sources/qetgraphicsitem/qetgraphicsitem.cpp b/sources/qetgraphicsitem/qetgraphicsitem.cpp
index 5dde9b5ee..bb2a97fe3 100644
--- a/sources/qetgraphicsitem/qetgraphicsitem.cpp
+++ b/sources/qetgraphicsitem/qetgraphicsitem.cpp
@@ -50,11 +50,7 @@ Diagram* QetGraphicsItem::diagram() const{
 void QetGraphicsItem::setPos(const QPointF &p) {
 	if (p == pos() || !is_movable_) return;
 	if (scene() && snap_to_grid_) {
-		// arrondit l'abscisse a 10 px pres
-		int p_x = qRound(p.x() / (Diagram::xGrid * 1.0)) * Diagram::xGrid;
-		// arrondit l'ordonnee a 10 px pres
-		int p_y = qRound(p.y() / (Diagram::yGrid * 1.0)) * Diagram::yGrid;
-		QGraphicsItem::setPos(p_x, p_y);
+		QGraphicsItem::setPos(Diagram::snapToGrid(p));
 		emit positionChange(pos());
 	} else QGraphicsItem::setPos(p);
 }
diff --git a/sources/qetgraphicsitem/qetshapeitem.cpp b/sources/qetgraphicsitem/qetshapeitem.cpp
index 2d7063d54..a5c241a4f 100644
--- a/sources/qetgraphicsitem/qetshapeitem.cpp
+++ b/sources/qetgraphicsitem/qetshapeitem.cpp
@@ -1,217 +1,246 @@
+/*
+	Copyright 2006-2014 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
 #include "qetshapeitem.h"
 #include "diagramcommands.h"
+#include "createdxf.h"
+#include "diagram.h"
 
 
-QetShapeItem::QetShapeItem(QPointF p1, QPointF p2, ShapeType type, bool lineAngle,QGraphicsItem *parent) :
+/**
+ * @brief QetShapeItem::QetShapeItem
+ * Constructor of shape item. point 1 and 2 must be in scene coordinate
+ * @param p1 first point
+ * @param p2 second point
+ * @param type type of item (line, rectangle, ellipse)
+ * @param parent parent item
+ */
+QetShapeItem::QetShapeItem(QPointF p1, QPointF p2, ShapeType type, QGraphicsItem *parent) :
 	QetGraphicsItem(parent),
-	_shapeStyle(Qt::DashLine),
-	_lineAngle(lineAngle),
-	_isFullyBuilt(false),
-	_writingXml(false)
+	m_shapeType(type),
+	m_shapeStyle(Qt::DashLine),
+	m_P1 (Diagram::snapToGrid(p1)),
+	m_P2 (Diagram::snapToGrid(p2))
+
 {
-	_shapeType = type;
-	_boundingRect = QRectF(p1, p2);
+	setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 }
 
 QetShapeItem::~QetShapeItem()
 {
 }
 
+/**
+ * @brief QetShapeItem::setStyle
+ * Set the new style of pen for thi item
+ * @param newStyle
+ */
 void QetShapeItem::setStyle(Qt::PenStyle newStyle)
 {
-	_shapeStyle = newStyle;
+	m_shapeStyle = newStyle;
 	update();
 }
 
-void QetShapeItem::scale(double factor)
-{
-	QRectF bounding_rect = boundingRect();
-	bounding_rect.setWidth(bounding_rect.width() * factor);
-	bounding_rect.setHeight(bounding_rect.height() * factor);
-	setBoundingRect(bounding_rect);
-	update();
-}
-
-void QetShapeItem::setFullyBuilt(bool isBuilt)
-{
-	_isFullyBuilt = isBuilt;
-	setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
-}
-
-QLineF *QetShapeItem::getLine()
-{
-	QRectF rect = boundingRect();
-	QLineF *line = 0;
-	if (_shapeType == Line) {
-		if (_lineAngle)
-			line = new QLineF(rect.topRight(), rect.bottomLeft());
-		else
-			line = new QLineF(rect.topLeft(), rect.bottomRight());
+/**
+ * @brief QetShapeItem::scale
+ * Preview the scale of this item to factor
+ * @param factor
+ */
+void QetShapeItem::previewScale(int factor) {
+	setTransformOriginPoint(boundingRect().center());
+	if (factor >= 1 && factor <= 200) {
+		qreal new_scale = factor;
+		new_scale /= 100;
+		setScale(new_scale);
 	}
-	return line;
 }
 
-QRectF *QetShapeItem::getRectangle()
-{
-	QRectF rect = boundingRect();
-	QRectF *rec = 0;
-	if (_shapeType == Rectangle)
-		rec = new QRectF(rect);
-	return rec;
+/**
+ * @brief QetShapeItem::setP2
+ * Set the second point of this item
+ * @param P2
+ */
+void QetShapeItem::setP2(QPointF P2) {
+	P2 = Diagram::snapToGrid(P2);
+	if (P2 == m_P2) return;
+	prepareGeometryChange();
+	m_P2 = P2;
+	setTransformOriginPoint(boundingRect().center());
 }
 
-QRectF *QetShapeItem::getEllipse()
-{
-	QRectF rect = boundingRect();
-	QRectF *rec = 0;
-	if (_shapeType == Ellipse)
-		rec = new QRectF(rect);
-	return rec;
+/**
+ * @brief QetShapeItem::boundingRect
+ * @return the bounding rect of this item
+ */
+QRectF QetShapeItem::boundingRect() const {
+	QRectF b(m_P1, m_P2);
+	return b.normalized();
 }
 
-QRectF QetShapeItem::boundingRect() const
-{
-	return _boundingRect;
-}
-
-QPainterPath QetShapeItem::shape() const
-{
+/**
+ * @brief QetShapeItem::shape
+ * @return the shape of this item
+ */
+QPainterPath QetShapeItem::shape() const {
 	QPainterPath path;
 	QPainterPathStroker pps;
-	QRectF rect = boundingRect();
 
-	switch (_shapeType) {
+	switch (m_shapeType) {
 		case Line:
-			if (_lineAngle) {
-				path.moveTo(rect.topRight());
-				path.lineTo(rect.bottomLeft());
-			} else {
-				path.moveTo(rect.topLeft());
-				path.lineTo(rect.bottomRight());
-			}
-			//use @pps for grab line with bigger outerline
-			//more usefull
+			path.moveTo(m_P1);
+			path.lineTo(m_P2);
 			pps.setWidth(10);
-			path= pps.createStroke(path);
+			path = pps.createStroke(path);
 			break;
 		case Rectangle:
-			path = QetGraphicsItem::shape();
+			path.addRect(boundingRect());
 			break;
 		case Ellipse:
-			path.addEllipse(rect);
+			path.addEllipse(boundingRect());
 			break;
 		default:
-			path = QetGraphicsItem::shape();
+			Q_ASSERT(false);
+			break;
 	}
 
 	return path;
 }
 
+/**
+ * @brief QetShapeItem::changeGraphicsItem
+ * Change the curent type of this item to newtype
+ * @param newtype
+ */
+void QetShapeItem::changeGraphicsItem(const ShapeType &newtype) {
+	if (newtype == m_shapeType) return;
+	prepareGeometryChange();
+	m_shapeType = newtype;
+}
+
+/**
+ * @brief QetShapeItem::paint
+ * Paint this item
+ * @param painter
+ * @param option
+ * @param widget
+ */
 void QetShapeItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
 {
-	if (!_writingXml) {
-		painter -> setRenderHint(QPainter::Antialiasing, false);
-		QRectF rec = boundingRect();
-		QPen pen(Qt::black);
+	Q_UNUSED(option); Q_UNUSED(widget);
 
-#ifdef Q_WS_WIN
-	pen.setWidthF(1);
-#endif
+	QPen pen;
+	pen.setStyle(m_shapeStyle);
+	if (isSelected()) pen.setColor(Qt::red);
+	painter->setPen(pen);
 
-		if (isSelected())
-			pen.setColor(Qt::red);
-		pen.setStyle(_shapeStyle);
-		painter->setPen(pen);
-		switch(_shapeType) {
-			case Line:
-				if (_lineAngle)
-					painter -> drawLine(rec.topRight(), rec.bottomLeft());
-				else
-					painter -> drawLine(rec.topLeft(), rec.bottomRight());
-				break;
-			case Rectangle:
-				painter -> drawRect(rec);
-				break;
-			default: //(case Ellipse:)
-				painter ->drawEllipse(rec);
-		}
+	switch (m_shapeType) {
+		case Line:
+			painter->drawLine(QLineF(m_P1, m_P2));
+			break;
+		case Rectangle:
+			painter->drawRect(boundingRect());
+			break;
+		case Ellipse:
+			painter->drawEllipse(boundingRect());
+			break;
 	}
 }
 
-void QetShapeItem::mousePressEvent(QGraphicsSceneMouseEvent *e)
-{
-	_origMousePress = mapToScene(e -> pos());
-	first_move_ = true;
-	if (e -> modifiers() & Qt::ControlModifier) {
-		setSelected(!isSelected());
-	}
-	QGraphicsItem::mousePressEvent(e);
-}
+/**
+ * @brief QetShapeItem::fromXml
+ * Build this item from the xml description
+ * @param e element where is stored this item
+ * @return true if load success
+ */
+bool QetShapeItem::fromXml(const QDomElement &e) {
+	if (e.tagName() != "shape") return (false);
 
-void QetShapeItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *e)
-{
-	if (diagram()) diagram() -> endMoveElements();
-	QPointF newCoord = mapToScene(e -> pos());
-	if (newCoord != _origMousePress) {
-		//translate bounding rectangle
-		QRectF rec = boundingRect();
-		rec.translate(newCoord - _origMousePress);
-		setBoundingRect(rec);
-		setPos(pos() - newCoord + _origMousePress);
-	}
-
-	if (!(e -> modifiers() & Qt::ControlModifier)) QGraphicsItem::mouseReleaseEvent(e);
-}
-
-
-bool QetShapeItem::fromXml(const QDomElement &e)
-{
-	if (!_writingXml) {
-		if (e.tagName() != "shape") return (false);
-
-		_shapeType = QetShapeItem::ShapeType(e.attribute("type","0").toInt());
-		_shapeStyle = Qt::PenStyle(e.attribute("style","0").toInt());
-		_lineAngle = e.attribute("lineAngle","0").toInt();
-		qreal x = e.attribute("x","0").toDouble();
-		qreal y = e.attribute("y","0").toDouble();
-		qreal w = e.attribute("w","0").toDouble();
-		qreal h = e.attribute("h","0").toDouble();
-		setBoundingRect(QRectF(x, y, w, h));
-		setFullyBuilt(true);
-	}
+	m_shapeStyle = Qt::PenStyle(e.attribute("style","0").toInt());
+	m_P1.setX(e.attribute("x1", 0).toDouble());
+	m_P1.setY(e.attribute("y1", 0).toDouble());
+	m_P2.setX(e.attribute("x2", 0).toDouble());
+	m_P2.setY(e.attribute("y2", 0).toDouble());
 
+	changeGraphicsItem(QetShapeItem::ShapeType(e.attribute("type","0").toInt()));
 	return (true);
 }
 
-
+/**
+ * @brief QetShapeItem::toXml
+ * Save this item to xml element
+ * @param document parent document xml
+ * @return element xml where is write this item
+ */
 QDomElement QetShapeItem::toXml(QDomDocument &document) const {
 	QDomElement result = document.createElement("shape");
-	QRectF rec = boundingRect();
 
 	//write some attribute
-	result.setAttribute("type", QString::number(_shapeType));
-	result.setAttribute("x", QString::number(rec.topLeft().x()));
-	result.setAttribute("y", QString::number(rec.topLeft().y()));
-	result.setAttribute("w", QString::number(rec.width()));
-	result.setAttribute("h", QString::number(rec.height()));
-	result.setAttribute("lineAngle", QString::number(_lineAngle));
-	result.setAttribute("style", QString::number(_shapeStyle));
+	result.setAttribute("type", QString::number(m_shapeType));
+	result.setAttribute("style", QString::number(m_shapeStyle));
+	result.setAttribute("x1", mapToScene(m_P1).x());
+	result.setAttribute("y1", mapToScene(m_P1).y());
+	result.setAttribute("x2", mapToScene(m_P2).x());
+	result.setAttribute("y2", mapToScene(m_P2).y());
 
 	return(result);
 }
 
+/**
+ * @brief QetShapeItem::toDXF
+ * Draw this element to the dxf document
+ * @param filepath file path of the the dxf document
+ * @return true if draw success
+ */
+bool QetShapeItem::toDXF(const QString &filepath) {
+	switch (m_shapeType) {
+		case Line:
+			Createdxf::drawLine(filepath, QLineF(mapToScene(m_P1), mapToScene(m_P2)), 0);
+			return true;
+			break;
+		case Rectangle:
+			Createdxf::drawRectangle(filepath, QRectF(mapToScene(m_P1), mapToScene(m_P2)).normalized(), 0);
+			return true;
+			break;
+		case Ellipse:
+			Createdxf::drawEllipse(filepath, QRectF(mapToScene(m_P1), mapToScene(m_P2)).normalized(), 0);
+			return true;
+			break;
+		default:
+			return false;
+			break;
+	}
+}
+
+/**
+ * @brief QetShapeItem::editProperty
+ * Edit the property of this item
+ */
 void QetShapeItem::editProperty()
 {
 	if (diagram() -> isReadOnly()) return;
 
 	//the dialog
 	QDialog property_dialog(diagram()->views().at(0));
-	property_dialog.setWindowTitle(tr("\311diter les propri\351t\351s d'une liaison, Zone ", "window title"));
+	property_dialog.setWindowTitle(tr("\311diter les propri\351t\351s d'une shape, Zone ", "window title"));
 	//the main layout
 	QVBoxLayout dialog_layout(&property_dialog);
 
 	//GroupBox for resizer image
-	QGroupBox restyle_groupe(QObject::tr("Type de ligne", "shape style"));
+	QGroupBox restyle_groupe(QObject::tr("Type de trait", "shape style"));
 	dialog_layout.addWidget(&restyle_groupe);
 	QHBoxLayout restyle_layout(&restyle_groupe);
 
@@ -223,7 +252,7 @@ void QetShapeItem::editProperty()
 	style_combo.addItem(QObject::tr("Traits points points"));
 
 	// The items have been added in order accordance with Qt::PenStyle.
-	style_combo.setCurrentIndex(int(_shapeStyle) - 1);
+	style_combo.setCurrentIndex(int(m_shapeStyle) - 1);
 
 	restyle_layout.addWidget(&style_combo);
 
@@ -231,23 +260,33 @@ void QetShapeItem::editProperty()
 	QCheckBox cb(tr("Verrouiller la position"), &property_dialog);
 	cb.setChecked(!is_movable_);
 	dialog_layout.addWidget(&cb);
-	cb.setVisible(false);
 
 	//GroupBox for Scaling
 	QGroupBox scale_groupe(QObject::tr("\311chelle", "shape scale"));
 	dialog_layout.addWidget(&scale_groupe);
 	QHBoxLayout scale_layout(&scale_groupe);
 
-	QLabel scale_label(&property_dialog);
-	scale_label.setText(tr("Facteur d'\351chelle"));
+	int min_range = 1;
+	int max_range = 200;
+	int factor_range = 100;
 
-	QLineEdit scale_lineedit(&property_dialog);
-	QDoubleValidator scale_val(0.0,1000,3, &property_dialog);
-	scale_lineedit.setValidator(&scale_val);
-	scale_lineedit.setText("1.0");
-
-	scale_layout.addWidget(&scale_label);
-	scale_layout.addWidget(&scale_lineedit);
+		//slider
+	QSlider slider(Qt::Horizontal, &property_dialog);
+	slider.setRange(min_range, max_range);
+	qreal scale_= scale();
+	slider.setValue(scale_*factor_range);
+		//spinbox
+	QSpinBox spin_box(&property_dialog);
+	spin_box.setRange(min_range, max_range);
+	spin_box.setValue(scale_*factor_range);
+	spin_box.setSuffix(" %");
+		//synchro slider with spinbox
+	connect(&slider, SIGNAL(valueChanged(int)), &spin_box, SLOT(setValue(int)));
+	connect(&slider, SIGNAL(valueChanged(int)), this, SLOT(previewScale(int)));
+	connect(&spin_box, SIGNAL(valueChanged(int)), &slider, SLOT(setValue(int)));
+		//add slider and spinbox to layout
+	scale_layout.addWidget(&slider);
+	scale_layout.addWidget(&spin_box);
 
 	//dialog button, box
 	QDialogButtonBox dbb(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
@@ -260,11 +299,13 @@ void QetShapeItem::editProperty()
 		cb.isChecked() ? is_movable_=false : is_movable_=true;
 
 		Qt::PenStyle new_style = Qt::PenStyle(style_combo.currentIndex() + 1);
-		if (new_style != _shapeStyle)
-			diagram()->undoStack().push(new ChangeShapeStyleCommand(this, _shapeStyle, new_style));
-		double scale_factor = scale_lineedit.text().toDouble();
-		if (scale_factor != 1 && scale_factor > 0 && scale_factor < 1000 )
-			diagram()->undoStack().push(new ChangeShapeScaleCommand(this, scale_factor));
+		if (new_style != m_shapeStyle) diagram()->undoStack().push(new ChangeShapeStyleCommand(this, m_shapeStyle, new_style));
+
+		qreal scale_factor = slider.value();
+		scale_factor /= factor_range;
+		if (scale_ != scale_factor) diagram()->undoStack().push(new ItemResizerCommand(this, scale_, scale_factor, tr("une shape")));
+		return;
 	}
-	return;
+	//...or not
+	setScale(scale_);
 }
diff --git a/sources/qetgraphicsitem/qetshapeitem.h b/sources/qetgraphicsitem/qetshapeitem.h
index b0eb836da..29b62da86 100644
--- a/sources/qetgraphicsitem/qetshapeitem.h
+++ b/sources/qetgraphicsitem/qetshapeitem.h
@@ -1,66 +1,78 @@
+/*
+	Copyright 2006-2014 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
 #ifndef QETSHAPEITEM_H
 #define QETSHAPEITEM_H
 
 #include "qetgraphicsitem.h"
 
+/**
+ * @brief The QetShapeItem class
+ * this class is used to draw a basic shape (line, rectangle, ellipse)
+ * into a diagram, that can be saved to .qet file.
+ */
 class QetShapeItem : public QetGraphicsItem
 {
+	Q_OBJECT
+
 	public:
+	Q_ENUMS(ShapeType)
+	enum ShapeType {Line	  =0,
+					Rectangle =1,
+					Ellipse	  =2};
 
-	enum ShapeType {
-		Line = 0,
-		Rectangle,
-		Ellipse
-	};
-
-	QetShapeItem(QPointF, QPointF = QPointF(0,0), ShapeType = Line, bool lineAngle = false, QGraphicsItem *parent = 0);
-	virtual ~QetShapeItem();
-
-	// attributes
-	public:
 	enum { Type = UserType + 1008 };
 
-	// methods
-	public:
+	QetShapeItem(QPointF, QPointF = QPointF(0,0), ShapeType = Line, QGraphicsItem *parent = 0);
+	virtual ~QetShapeItem();
+
 	/**
-		Enable the use of qgraphicsitem_cast to safely cast a QGraphicsItem into a
-		QetShapeItem
+		Enable the use of qgraphicsitem_cast to safely cast a QGraphicsItem into a QetShapeItem
 		@return the QGraphicsItem type
 	*/
 	virtual int type() const { return Type; }
 
+	///METHODS
 	void setStyle(Qt::PenStyle);
-	Qt::PenStyle getStyle() const		{ return _shapeStyle;	   }
-	ShapeType getType()		const		{ return _shapeType;	   }
-	void setBoundingRect(QRectF rec)	{ _boundingRect = rec;	   }
-	void setLineAngle(bool lineAngle)	{ _lineAngle = lineAngle;  }
-	void setFullyBuilt(bool isBuilt);
-	QLineF *getLine();
-	QRectF *getRectangle();
-	QRectF *getEllipse();
-	virtual bool fromXml(const QDomElement &);
-	virtual QDomElement toXml(QDomDocument &document) const;
-	void setWritingXml(bool writing)	{ _writingXml = writing;   }
-	virtual void editProperty();
-	QRectF boundingRect() const;
-	void scale(double factor);
 
-	private:
-	ShapeType    _shapeType;
-	Qt::PenStyle _shapeStyle;
-	QRectF       _boundingRect;
-	bool		 _lineAngle;  // false if line from topleft corner to bottomright corner
-							  // and true if line from topright corner to bottomleft corner
-	bool		 _isFullyBuilt;
-	QPointF		 _origMousePress;
-	bool		 _writingXml;
+	virtual bool	    fromXml (const QDomElement &);
+	virtual QDomElement toXml	(QDomDocument &document) const;
+	virtual bool		toDXF	(const QString &filepath);
+
+	virtual void editProperty();
+
+	void setP2(QPointF P2);
+
+	QRectF boundingRect() const;
+	QPainterPath shape()  const;
 
 	protected:
-	void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
-	virtual void mousePressEvent(QGraphicsSceneMouseEvent *e);
-	virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *e);
-	QPainterPath shape() const;
+	virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
 
+	private:
+	void changeGraphicsItem (const ShapeType &newtype);
+
+	private slots:
+	void previewScale(int factor);
+
+	///ATTRIBUTES
+	private:
+	ShapeType    m_shapeType;
+	Qt::PenStyle m_shapeStyle;
+	QPointF		 m_P1, m_P2;
 };
-
 #endif // QETSHAPEITEM_H