Basic Primitive shapes added (line,rectangle,ellipse). Default style dashed.

Pending work:
1. DXF Export
2. XML Import / Export
3. Properties Edit option (line style/colour/weight)
4. Debugging required



git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@2873 bfdf4180-ca20-0410-9c96-a3a8aa849046

sources/qetgraphicsitem/qetshapeitem.cpp

@@ -0,0 +1,45 @@
+#include "qetshapeitem.h"
+
+QetShapeItem::QetShapeItem(QPointF p1, QPointF p2, ShapeType type, bool lineAngle,QGraphicsItem *parent) :
+	QetGraphicsItem(parent),
+	_shapeStyle(Qt::DashLine),
+	_lineAngle(lineAngle)
+{
+	_shapeType = type;
+	_boundingRect = QRectF(p1, p2);
+}
+
+QetShapeItem::~QetShapeItem()
+{
+}
+
+void QetShapeItem::setStyle(Qt::PenStyle newStyle)
+{
+	_shapeStyle = newStyle;
+}
+
+QRectF QetShapeItem::boundingRect() const
+{
+	return _boundingRect;
+}
+
+void QetShapeItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
+{
+	QRectF rec = boundingRect();
+	QPen pen(Qt::black);
+	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);
+	}
+}

sources/qetgraphicsitem/qetshapeitem.h

@@ -0,0 +1,35 @@
+#ifndef QETSHAPEITEM_H
+#define QETSHAPEITEM_H
+
+#include "qetgraphicsitem.h"
+
+class QetShapeItem : public QetGraphicsItem
+{
+	public:
+
+	enum ShapeType {
+		Line,
+		Rectangle,
+		Ellipse
+	};
+
+	QetShapeItem(QPointF, QPointF, ShapeType, bool lineAngle = false, QGraphicsItem *parent = 0);
+	virtual ~QetShapeItem();
+
+	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
+
+	void setStyle(Qt::PenStyle);
+	virtual void editProperty() {}
+
+	protected:
+	void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
+	QRectF boundingRect() const;
+
+};
+
+#endif // QETSHAPEITEM_H