Add XML files for reading and writing

1 files changed, 72 insertions, 5 deletions

diff --git a/line.cpp b/line.cpp
index 5f7e171..2d19874 100644
--- a/line.cpp
+++ b/line.cpp
@@ -1,7 +1,7 @@
 #include "line.h"
 
 Line::Line()
-    :QLine()
+    : QLine()
 {
     m_selected = true;
 }
@@ -25,7 +25,7 @@ void Line::setSelected(bool selected)
 
 void Line::draw(QPainter *painter)
 {
-    if(m_selected)
+    if (m_selected)
     {
         QPen penTemp(Qt::DotLine);
         penTemp.setColor(Qt::red);
@@ -47,15 +47,16 @@ void Line::draw(QPainter *painter)
 
 void Line::move(const QPoint &oldPoint, const QPoint &newPoint)
 {
-    if(m_selected)
+    if (m_selected)
     {
         QPoint offset = newPoint - oldPoint;
         QVector3D vecOld(oldPoint);
-        if(vecOld.distanceToPoint(QVector3D(p1())) < 5)
+
+        if (vecOld.distanceToPoint(QVector3D(p1())) < 5)
         {
             setP1(p1() + offset);
         }
-        else if(vecOld.distanceToPoint(QVector3D(p2())) < 5)
+        else if (vecOld.distanceToPoint(QVector3D(p2())) < 5)
         {
             setP2(p2() + offset);
         }
@@ -66,3 +67,69 @@ void Line::move(const QPoint &oldPoint, const QPoint &newPoint)
         }
     }
 }
+
+QDomElement Line::toDomElement(QDomDocument *doc)
+{
+    QDomElement e = doc->createElement(className());
+    attributesToDom(doc, e);
+    return e;
+}
+
+bool Line::attributesToDom(QDomDocument *doc, QDomElement &e)
+{
+    if (e.isNull())
+    {
+        qDebug() << className() << "::attributesToDom Error: NULL element passed.";
+        return false;
+    }
+    else
+    {
+        e.setAttribute("x1", p1().rx());
+        e.setAttribute("y1", p1().ry());
+        e.setAttribute("x2", p2().rx());
+        e.setAttribute("y2", p2().ry());
+
+        return true;
+    }
+}
+
+bool Line::fromDomElement(const QDomElement &e)
+{
+    if (e.isNull())
+    {
+        qDebug() << className() << "::fromQDomElement Error: NULL element passed.";
+        return false;
+    }
+
+    if (className() != e.tagName())
+    {
+        qDebug() << className() << "::fromQDomElement Error: Invalid element type: " <<
+                 e.tagName() << " instead of " << className();
+        return false;
+    }
+
+    return attributesFromDom(e);
+}
+
+bool Line::attributesFromDom(const QDomElement &e)
+{
+    if (e.isNull())
+    {
+        qDebug() << className() << "::attributesFromDom Error: NULL element passed.";
+        return false;
+    }
+    else
+    {
+        QPoint newP1(e.attribute("x1", "0").toInt(), e.attribute("y1", "0").toInt());
+        QPoint newP2(e.attribute("x2", "0").toInt(), e.attribute("y2", "0").toInt());
+
+        setPoints(newP1, newP2);
+
+        return true;
+    }
+}
+
+QString Line::className()
+{
+    return "Line";
+}