Add XML files for reading and writing

1 files changed, 61 insertions, 4 deletions

diff --git a/polygon.cpp b/polygon.cpp
index d8b71b7..c785e7b 100644
--- a/polygon.cpp
+++ b/polygon.cpp
@@ -38,19 +38,20 @@ void Polygon::draw(QPainter *painter)
 
 void Polygon::move(const QPoint &oldPoint, const QPoint &newPoint)
 {
-    if(m_selected)
+    if (m_selected)
     {
         QPoint offset = newPoint - oldPoint;
         QVector3D vecOld(oldPoint);
-        if(vecOld.distanceToPoint(QVector3D(m_polygon.point(0))) < 5)
+
+        if (vecOld.distanceToPoint(QVector3D(m_polygon.point(0))) < 5)
         {
             m_polygon.replace(0, m_polygon.point(0) + offset);
         }
-        else if(vecOld.distanceToPoint(QVector3D(m_polygon.point(1))) < 5)
+        else if (vecOld.distanceToPoint(QVector3D(m_polygon.point(1))) < 5)
         {
             m_polygon.replace(1, m_polygon.point(1) + offset);
         }
-        else if(vecOld.distanceToPoint(QVector3D(m_polygon.point(2))) < 5)
+        else if (vecOld.distanceToPoint(QVector3D(m_polygon.point(2))) < 5)
         {
             m_polygon.replace(2, m_polygon.point(2) + offset);
         }
@@ -62,3 +63,59 @@ void Polygon::move(const QPoint &oldPoint, const QPoint &newPoint)
         }
     }
 }
+
+bool Polygon::attributesToDom(QDomDocument *doc, QDomElement &e)
+{
+    if (e.isNull())
+    {
+        qDebug() << className() << "::attributesToDom Error: NULL element passed.";
+        return false;
+    }
+    else
+    {
+        QDomElement tmp;
+
+        foreach(QPoint point, m_polygon.toList())
+        {
+            tmp = doc->createElement("Point");
+
+            tmp.setAttribute("x", point.rx());
+            tmp.setAttribute("y", point.ry());
+
+            e.appendChild(tmp);
+        }
+
+        return true;
+    }
+}
+
+bool Polygon::attributesFromDom(const QDomElement &e)
+{
+    if (e.isNull())
+    {
+        qDebug() << className() << "::attributesFromDom Error: NULL element passed.";
+        return false;
+    }
+    else
+    {
+        QDomElement child = e.firstChildElement("Point");
+
+        m_polygon.clear();
+
+        while(!child.isNull())
+        {
+            QPoint tmp(child.attribute("x", "0").toInt(), child.attribute("y", "0").toInt());
+
+            m_polygon.append(tmp);
+
+            child = child.nextSiblingElement("Point");
+        }
+
+        return true;
+    }
+}
+
+QString Polygon::className()
+{
+    return "Polygon";
+}