Enable internal move in the list. Helps user quickly make reorder.

--HG--
branch : feature

src/app/valentina/main.cpp

@@ -29,6 +29,7 @@
 #include "mainwindow.h"
 #include "core/vapplication.h"
 #include "../fervor/fvupdater.h"
+#include "../vpatterndb/vpiecenode.h"
 
 #include <QMessageBox> // For QT_REQUIRE_VERSION
 #include <QTimer>
@@ -53,6 +54,8 @@ int main(int argc, char *argv[])
 
     qt_qhash_seed.store(0); // Lock producing random attribute order in XML
 
+    qRegisterMetaTypeStreamOperators<VPieceNode>("VPieceNode");
+
 #if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
     QApplication::setAttribute(Qt::AA_EnableHighDpiScaling); // DPI support
 #endif

src/libs/vpatterndb/vpiecenode.cpp

@@ -97,3 +97,24 @@ void VPieceNode::SetReverse(bool reverse)
         d->m_reverse = reverse;
     }
 }
+
+// Friend functions
+//---------------------------------------------------------------------------------------------------------------------
+QDataStream& operator<<(QDataStream& out, const VPieceNode& p)
+{
+    out << p.d->m_id << static_cast<int>(p.d->m_typeTool) << p.d->m_reverse;
+    return out;
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QDataStream& operator>>(QDataStream& in, VPieceNode& p)
+{
+    in >> p.d->m_id;
+
+    int type = 0;
+    in >> type;
+    p.d->m_typeTool = static_cast<Tool>(type);
+
+    in >> p.d->m_reverse;
+    return in;
+}

src/libs/vpatterndb/vpiecenode.h

@@ -46,6 +46,9 @@ public:
     VPieceNode &operator=(const VPieceNode &node);
     ~VPieceNode();
 
+    friend QDataStream& operator<<(QDataStream& out, const VPieceNode& p);
+    friend QDataStream& operator>>(QDataStream& in, VPieceNode& p);
+
     quint32 GetId() const;
     void    SetId(quint32 id);
 

src/libs/vtools/dialogs/tools/dialogseamallowance.ui

@@ -59,7 +59,11 @@
         </layout>
        </item>
        <item>
-        <widget class="QListWidget" name="listWidget"/>
+        <widget class="QListWidget" name="listWidget">
+         <property name="dragDropMode">
+          <enum>QAbstractItemView::InternalMove</enum>
+         </property>
+        </widget>
        </item>
        <item>
         <widget class="QLabel" name="helpLabel">