Basic classes and window layout

gridpreview.cpp

@@ -0,0 +1,34 @@
+#include "gridpreview.h"
+
+GridPreview::GridPreview(QWidget *parent)
+    : QWidget{parent}
+{}
+
+void GridPreview::setSize(int newWidth, int newHeight)
+{
+    width = newWidth;
+    height = newHeight;
+}
+
+void GridPreview::addLine(Line &line)
+{
+    lines.push_back(line);
+}
+
+void GridPreview::removeLine(int index)
+{
+    lines.removeAt(index);
+}
+
+QString GridPreview::toLuaTable()
+{
+    QString output(tableTemplate.arg(width).arg(height));
+    QString linesSubTable = "";
+    for(auto iter = lines.begin(); iter != lines.end(); iter++ )
+    {
+        linesSubTable += QString("        %1,\n").arg(iter->toLuaTable());
+    }
+    linesSubTable.removeLast(); // \n
+    linesSubTable.removeLast(); // ,
+    return output.arg(linesSubTable);
+}